# Tvardi Therapeutics, Inc.: Form 10-K for the period ended Dec 31, 2024

- Company: [Tvardi Therapeutics, Inc.](/companies/tvrd.md) (CIK 1346830)
- Form: 10-K
- Filed: 2025-03-11
- Accepted by EDGAR: Mar 11, 2025, 16:10 ET
- Period: 2024-12-31
- Accession: 0001558370-25-002705
- Inline XBRL: yes
- Main document: https://www.sec.gov/Archives/edgar/data/1346830/000155837025002705/cara-20241231x10k.htm
- All documents and exhibits: https://www.sec.gov/Archives/edgar/data/1346830/000155837025002705/

## Figures reported in this filing

Standardized XBRL line items for the period ended 2024-12-31.

| Line item | Period | Value | XBRL concept |
| --- | --- | ---: | --- |
| Revenue | 12 months, 2024-01-01 to 2024-12-31 | $7.1m | us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax |
| Research and development | 12 months, 2024-01-01 to 2024-12-31 | $32.8m | us-gaap:ResearchAndDevelopmentExpense |
| Operating income | 12 months, 2024-01-01 to 2024-12-31 | −$58.4m | us-gaap:OperatingIncomeLoss |
| Income tax | 12 months, 2024-01-01 to 2024-12-31 | −$398.0k | us-gaap:IncomeTaxExpenseBenefit |
| Net income | 12 months, 2024-01-01 to 2024-12-31 | −$70.9m | us-gaap:NetIncomeLoss |
| Diluted EPS | 12 months, 2024-01-01 to 2024-12-31 | −$15.53 | us-gaap:EarningsPerShareDiluted |
| Basic EPS | 12 months, 2024-01-01 to 2024-12-31 | −$15.53 | us-gaap:EarningsPerShareBasic |
| Diluted shares (weighted) | 12 months, 2024-01-01 to 2024-12-31 | 4,562,738 shares | us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding |
| Operating cash flow | 12 months, 2024-01-01 to 2024-12-31 | −$60.9m | us-gaap:NetCashProvidedByUsedInOperatingActivities |
| Capital expenditure | 12 months, 2024-01-01 to 2024-12-31 | $1.0m | us-gaap:PaymentsToAcquirePropertyPlantAndEquipment |
| Cash and equivalents | at 2024-12-31 | $37.9m | us-gaap:CashAndCashEquivalentsAtCarryingValue |
| Current assets | at 2024-12-31 | $43.8m | us-gaap:AssetsCurrent |
| Total assets | at 2024-12-31 | $43.8m | us-gaap:Assets |
| Current liabilities | at 2024-12-31 | $4.0m | us-gaap:LiabilitiesCurrent |
| Total liabilities | at 2024-12-31 | $48.4m | us-gaap:Liabilities |
| Shareholders' equity | at 2024-12-31 | −$4.6m | us-gaap:StockholdersEquity |

## Business

As filed, 100,806 characters.

#### Overview

Cara is a biopharmaceutical company that has been focused on leading a new treatment paradigm to improve the lives of patients suffering from chronic pruritus. Cara has developed an IV formulation of difelikefalin, which is approved for the treatment of moderate-to-severe pruritus associated with advanced chronic kidney disease in adults undergoing hemodialysis in the United States, the European Union, or EU, and multiple other countries. The IV formulation is out-licensed worldwide.

On June 14, 2024, Cara’s Board of Directors approved a streamlined operating plan exploring strategic alternatives focused on maximizing shareholder value after Cara announced its decision to discontinue the clinical program in notalgia paresthetica, or NP, on June 12, 2024. Cara’s decision to discontinue the clinical program in NP followed the outcome from the dose-finding Part A of the KOURAGE-1 study evaluating the efficacy and safety of oral difelikefalin for moderate-to-severe pruritus in adult patients with NP in which oral difelikefalin did not demonstrate a meaningful clinical benefit at any dose compared to placebo. The decision was not related to any safety or medical issues, or negative regulatory feedback related to the NP program. In connection with the streamlined operating plan, Cara’s Board of Directors also approved a second reduction in Cara’s workforce by approximately 70%, which was substantially completed by June 30, 2024 (see Note 19 of Notes to Consolidated Financial Statements, *Commitments and Contingencies – Restructuring Actions*, in this Annual Report on Form 10-K.)

On December 30, 2024, Cara effected a one-for-twelve (12) reverse stock split and corresponding proportionate reduction in the total number of authorized shares of Cara’s common stock. All share and per share amounts in this Annual Report on Form 10-K, unless otherwise noted, reflect the reverse stock split (see Item 7. *Management’s Discussion and Analysis of Financial Condition and Results of Operations – Corporate Update).*

#### Strategic Alternatives

After a comprehensive review by Cara’s Board of Directors of strategic alternatives, including identifying and reviewing potential candidates for a strategic transaction, on December 17, 2024, Cara, CT Convergence Merger Sub, Inc., a Delaware corporation and wholly owned subsidiary of Cara, or Merger Sub, and Tvardi entered into an Agreement and Plan of Merger and Reorganization, as may be amended from time to time, or the Merger Agreement, pursuant to which Merger Sub will merge with and into Tvardi, with Tvardi surviving as a wholly owned subsidiary of Cara. The closing of the Merger is subject to approval by Cara’s and Tvardi’s stockholders, as well as other customary closing conditions, including the effectiveness of a registration statement that we have filed with the SEC, and Nasdaq’s approval of the listing of the shares of Cara common stock to be issued in connection with the transaction. Additionally, as a condition of the closing of the Merger, Tvardi must have received satisfactory evidence that the Asset Disposition (as defined below) will be consummated substantially concurrently with the closing of the Merger. If the Merger is completed, the business of Tvardi will continue as the business of the combined company.

On December 17, 2024, Cara and its subsidiary, Cara Royalty Sub, LLC (Cara Royalty Sub, and together with Cara, each, a Seller and together, the Sellers), entered into an Asset Purchase Agreement (APA) with Vifor Fresenius Medical Care Renal Pharma, Ltd., a majority-owned, indirect subsidiary of CSL Limited (CSL Vifor), pursuant to which, at the consummation of the transaction, Sellers will sell to CSL Vifor and CSL Vifor will acquire from Sellers certain assets and rights for the development, manufacture and commercialization of difelikefalin as well as certain associated liabilities (Asset Disposition) for a purchase price of $900,000 (subject to certain adjustments with respect to inventory). Pursuant to the APA, in connection with the consummation of the Asset Disposition, CSL Vifor and HCR (as defined below) have entered into a letter agreement with Cara providing that CSL Vifor and HCR will, subject to the satisfaction of conditions to closing under the APA, enter into an amended and restated purchase agreement to amend and replace the existing Purchase and Sale Agreement, dated as of November 1, 2023 (as amended, Original HCR Agreement), by and among Cara Royalty Sub, HCRX Investments HoldCo, L.P. (HCRX) and HealthCare Royalty Partners IV, L.P. (HCR IV and together with HCRX, HCR). Upon entering into the amended and restated purchase agreement, effective as of the closing of the Asset Disposition: (i) CSL Vifor will be obligated to make certain payments to HCR from and after the date thereof relating to certain revenue and/or royalties from difelikefalin, (ii) each of the Contribution Agreement, the License Agreement and the Pledge Agreement (each as defined in the Original HCR Agreement) shall be terminated, and (iii) Sellers shall have no further payment or other obligations to HCR under the Original HCR Agreement. Additionally, pursuant to the APA, at the consummation of the Asset Disposition, Cara has agreed to pay CSL Vifor $3.0 million to compensate CSL Vifor for the estimated incremental future expenses to be incurred by CSL Vifor as a result of the transfer of the assets to be acquired and the liabilities to be assumed by it in connection with the Asset Disposition. The Asset Disposition is subject to certain conditions to closing, including either (i) the consummation of the Merger concurrently with the Asset Disposition or (ii) the receipt of the requisite stockholder approval needed to approve the Asset Disposition in the event that the Merger is terminated.

Cara’s future operations are highly dependent on the success of the Merger and the Asset Disposition, and there can be no assurances that the Merger and Asset Disposition will be successfully consummated. There can be no assurance that any transaction, including the Merger and the Asset Disposition. will be completed on terms favorable to Cara and its stockholders. If these transactions are unsuccessful, Cara’s Board of Directors may decide to pursue a dissolution and liquidation of Cara.

### Corporate History

Cara was incorporated and commenced operations in 2004, and its primary activities to date have been organizing and staffing the company, developing its lead product and product candidates, including conducting preclinical studies and clinical trials of difelikefalin-based product candidates and raising capital. To date, Cara has financed its operations primarily through sales of its equity and debt securities, sales of its royalties from ex-U.S. sales of its commercial product, and payments from license agreements.

### Cara’s Product Portfolio

|  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |
| **Product** |  | **Indication** |  | **Status** |  | **Next Milestone** |  | **Commercialization Rights** |
| KORSUVA (difelikefalin) injection/Kapruvia |  | Pruritus CKD - Hemodialysis |  | Approved in the U.S. (08/2021) Approved in EU incl. UK (04/2022) Approved in Japan (09/2023) Other approvals: Switzerland, Canada, Singapore, Australia, Kuwait, Israel, UAE, Saudi Arabia |  | ​ |  | CSL Vifor (Worldwide excl. Japan and South Korea)\*; Maruishi (Japan); CKDP (South Korea) |

*\*Cara is party to two collaborations for the commercialization of KORSUVA (difelikefalin) injection/Kapruvia with a joint venture between CSL Vifor and Fresenius Medical Care. In this Annual Report, unless the context otherwise requires, “CSL Vifor” refers to CSL Vifor and its affiliated entities, including, where applicable, the joint venture.*

### KORSUVA (difelikefalin) injection – Cara’s Commercial Stage Product

#### Overview

Cara has out-licensed to CSL Vifor the commercialization of KORSUVA injection/Kapruvia in dialysis patients with moderate-to-severe pruritus associated with chronic kidney disease, or advanced CKD-aP, worldwide, excluding Japan (licensed to Maruishi/sub-licensee Kissei), and South Korea (licensed to CKDP).

On August 23, 2021, KORSUVA injection was approved by the U.S. Food and Drug Administration, or FDA, for the treatment of moderate-to-severe pruritus associated with advanced CKD in adults undergoing hemodialysis. In December 2021, Centers for Medicare & Medicaid Services, or CMS, granted Transition Drug Add-on Payment Adjustment, or TDAPA, to KORSUVA injection in the anti-pruritic functional category. TDAPA went into effect on April 1, 2022 for two years. The commercial launch of KORSUVA injection commenced in April 2022 and Cara began recording the associated profit-sharing revenues in the second quarter of 2022. On October 27, 2023, CMS published the final CY 2024 rule, which finalized the post-TDAPA add-on payment as proposed in the draft CY 2024 rule. Under the final rule, TDAPA drugs in existing functional categories will receive a post-TDAPA add-on payment set at 65 percent of the total trailing 12-months expenditure levels for the given renal dialysis drug or biological product. The post-TDAPA add-on payment will be applied to all End Stage Renal Disease, or ESRD, Prospective Payment System, or PPS, payments and paid for 3 years, adjusted annually. The add-on payments for KORSUVA injection commenced on April 1, 2024. The unfavorable CMS reimbursement codified in the final CY2024 rule has resulted in a lack of sequential revenues growth for KORSUVA injection since its launch.

For the year ended December 31, 2024, CSL Vifor recorded net sales of KORSUVA injection in the United States of approximately $2.1 million, which included negative net sales reported by CSL Vifor for the second and fourth quarters of 2024 primarily due to higher rebates and chargebacks due to price decreases on KORSUVA injection related to the expiration of TDAPA in April 2024. For the years ended December 31, 2023 and 2022, CSL Vifor recorded net sales of KORSUVA injection in the United States of approximately $26.5 million and $35.0 million, respectively. For the years ended December 31, 2024, 2023 and 2022, Cara recorded associated collaborative revenue of $2.1 million, $12.4 million and $16.6 million, respectively. However, Cara has recorded an expense in other general and administrative, or G&A, expense for approximately $1.6 million for the year ended December 31, 2024 as a result of the negative profit share amounts in the second and fourth quarters of 2024. As a result of the final CY 2024 rule, Cara expects no meaningful revenue contribution from KORSUVA injection following the TDAPA period expiration.

In April 2022, the European Commission granted a marketing authorization to difelikefalin injection under the brand name Kapruvia for the treatment of moderate-to-severe pruritus associated with advanced CKD in adult hemodialysis patients. The marketing authorization approves Kapruvia for use in all member states of the EU, as well as Iceland, Liechtenstein, and Norway. Difelikefalin injection was also approved in the UK (04/2022) and Switzerland

(08/2022) under the brand name Kapruvia as well as Singapore (08/2022), Canada (08/2022), Australia (11/2022), UAE (01/2023), Kuwait (05/2023), Israel (06/2023), Japan (09/2023), and Saudi Arabia (01/2024) under the brand name KORSUVA injection. For the years ended December 31, 2023 and 2022, Cara recorded royalty revenue of approximately $415,000 and $72,000, respectively, which represented its royalties on net sales of Kapruvia and KORSUVA injection.

Pursuant to the Original HCR Agreement, HCR will receive current and future royalty and milestone payments for Kapruvia and KORSUVA (ex-U.S. only) up to certain capped amounts in exchange for certain payments made to Cara. As a result, there was no royalty revenue recorded for the year ended December 31, 2024. However, Cara recorded other revenue of approximately $4.3 million for the year ended December 31, 2024, of which approximately $1.5 million related to CSL Vifor royalties to be paid to HCR under this agreement. For the period of October 1, 2023 through December 31, 2023, Cara also recorded other revenue of $699,000, of which approximately $284,000 related to CSL Vifor royalties to be paid to HCR under this agreement (see “Royalty Purchase and Sale Agreement” below).

Cara has out-licensed to Maruishi and its sub-licensee Kissei the commercialization of KORSUVA injection in Japan. In September 2023, Maruishi received manufacturing and marketing approval from Japan’s Ministry of Health, Labour and Welfare for KORSUVA IV Injection Syringe for the treatment of pruritus in hemodialysis patients. In conjunction with the approval, Cara earned a $1.4 million milestone payment per the terms of the licensing agreement during the year ended December 31, 2023.

Pursuant to the Original HCR Agreement, Cara sold its future royalties and milestones for KORSUVA in Japan to HCR. For the year ended December 31, 2024, Cara recorded other revenue of approximately $4.3 million, of which approximately $2.8 million related to Maruishi royalties to be paid to HCR under this agreement. For the period of October 1, 2023 through December 31, 2023, Cara also recorded other revenue of $699,000, of which approximately $415,000 related to Maruishi royalties to be paid to HCR under this agreement (see “Royalty Purchase and Sale Agreement” below).

As a result of Cara’s sales of the royalties and milestones for KORSUVA/Kapruvia, Cara expects no meaningful revenue contribution from KORSUVA/Kapruvia royalties and milestones in the foreseeable future.

#### KORSUVA Injection U.S. Commercialization

In April 2022, Cara’s partner CSL Vifor initiated the commercialization of KORSUVA injection in the United States. The launch was initially driven by independent and mid-size dialysis organizations coupled with product stocking at the wholesaler level. In the third quarter of 2022, large dialysis organizations, or LDOs, came on-line driving a significant quarter-to-quarter increase in order volume from the wholesaler. This stocking at the clinic level, particularly from Fresenius Medical Care, or FMC, resulted in significant subsequent quarterly revenue fluctuations. In the third quarter of 2023, FMC decided to reallocate all remaining clinic level inventory within its network of clinics resulting in limited revenues in the fourth quarter of 2023 and the year ended December 31, 2024.

#### KORSUVA Injection and Kapruvia Revenue and Other Metrics

Cara generates revenue from its commercial products KORSUVA injection and Kapruvia primarily through its collaboration agreements with CSL Vifor:

- Collaborative revenue from Cara’s share of the profit generated by KORSUVA injection sales in the United States. For the years ended December 31, 2024, 2023 and 2022, Cara recorded collaborative revenue of $2.1 million, $12.4 million and $16.6 million, respectively.
- Commercial supply revenue from Cara’s sales of commercial product to CSL Vifor, which is subsequently sold to wholesalers. For the years ended December 31, 2024, 2023 and 2022, Cara recorded commercial supply revenue of $0.6 million, $5.8 million and $10.2 million, respectively.
- Royalty revenue in conjunction with the launch of Kapruvia. For the years ended December 31, 2023 and 2022, Cara recorded royalty revenue of approximately $415,000 and $72,000, respectively, which represented royalty payments earned by Cara. Cara recorded no royalty revenue in connection with Kapruvia for the year ended December 31, 2024 as a result of entering the Original HCR Agreement in the fourth quarter of 2023.

During the fourth quarter of 2023, Cara entered into the Original HCR Agreement where Cara sold its current and future royalties and milestone payments for Kapruvia and KORSUVA injection to HCR. For the years ended December 31, 2024 and 2023, Cara recorded other revenue of approximately $4.3 million and $699,000, respectively, of which approximately $1.5 million and $284,000, respectively, related to CSL Vifor royalties to be paid to HCR under this agreement and approximately $2.8 million and $415,000, respectively, related to Maruishi royalties to be paid to HCR under this agreement (see “Royalty Purchase and Sale Agreement” below).

Cara is also eligible for sales-based or regulatory milestone payments, which could be earned in the future in accordance with certain licensing agreements and would be subject to the Original HCR Agreement for ex-U.S. milestone payments. For the year ended December 31, 2024, Cara did not record any sales-based or regulatory milestone revenue. For the year ended December 31, 2023, Cara earned regulatory milestone revenue of $1.4 million related to the manufacturing and marketing approval in Japan under the Maruishi Agreement, but did not record any sales-based milestone revenue. For the year ended December 31, 2022, Cara earned regulatory milestone revenue of $15.0 million from CSL Vifor for the approval of Kapruvia by the European Commission in April 2022, but did not record any sales-based milestone revenue.

Additional metrics that Cara has reported in the past:

- Net sales of KORSUVA injection in the United States. This amount is the net sales amount recorded by CSL Vifor to reflect shipments of KORSUVA injection vials from CSL Vifor to wholesalers. For the year ended December 31, 2024, CSL Vifor recorded net sales of KORSUVA injection in the United States of approximately $2.1 million, which included negative net sales reported by CSL Vifor for the second and fourth quarters of 2024 primarily due to higher rebates and chargebacks due to price decreases on KORSUVA injection related to the expiration of TDAPA in April 2024. For the years ended December 31, 2023 and 2022, CSL Vifor recorded net sales of KORSUVA injection in the United States of approximately $26.5 million and $35.0 million, respectively.
- Shipments of KORSUVA injection vials from wholesalers in the United States to the dialysis clinics. 300,696, 314,100 and 207,096 KORSUVA injection vials were shipped from wholesalers to the dialysis clinics for the years ended December 31, 2024, 2023 and 2022, respectively. Of the vials shipped to the FMC dialysis centers for the years ended December 31, 2024 and 2023, a portion was reallocated product by FMC within its network of clinics.

### Difelikefalin Development in Pruritus

Difelikefalin, Cara’s selective, predominantly peripherally acting, non-scheduled Kappa opioid receptor agonist, acts on the peripheral neurons responsible for sensing pruritus. Given this unique mechanism of action, difelikefalin is thought to work broadly independent of the origin of itch. To date, Cara has studied difelikefalin for pruritus associated with systemic, inflammatory, and neuropathic diseases. The IV formulation is approved in the United States, EU and other countries around the world for the treatment of advanced CKD-aP in adults undergoing hemodialysis. Cara studied the oral formulation at multiple dosage strengths in moderate-to-severe pruritus associated with NP with positive efficacy signals across all completed mono therapy studies. In Cara’s NP program, oral difelikefalin was generally well tolerated with all adverse events in difelikefalin-treated patients reported as mild or moderate in severity.

On June 12, 2024, Cara announced its decision to discontinue the clinical program in NP following the outcome from the dose-finding Part A of the KOURAGE-1 study evaluating the efficacy and safety of oral difelikefalin for moderate-to-severe pruritus in adult patients with NP. Oral difelikefalin did not demonstrate a meaningful clinical benefit at any dose compared to placebo. The decision was not related to any safety or medical issues, or negative regulatory feedback related to the NP program.

On June 14, 2024, Cara’s Board of Directors approved a streamlined operating plan exploring strategic alternatives focused on maximizing shareholder value based on the decision to discontinue the NP program.

### Royalty Purchase and Sale Agreement

Pursuant to the Original HCR Agreement, Cara Royalty Sub sold to HCR certain of its rights to receive future royalties and milestone payments, or the Royalties, due and payable to Cara Royalty Sub (as Cara’s assignee) under its agreements with Maruishi and CSL Vifor, collectively the Covered License Agreements, in exchange for up to $40.0 million. Cara has retained all of its right, title and interest in, to and under the Covered License Agreements that relate to any non-intravenous formulation of difelikefalin.

Under the terms of the Original HCR Agreement, Cara received an initial payment of $17.5 million less certain transaction costs in November 2023. In December 2023, Cara received an additional $20.0 million less certain advisory fees, upon satisfying the milestone event for pricing of Kapruvia® (difelikefalin) in Germany being approved above a certain threshold amount per dose. The terms of the Original HCR Agreement also provided for an additional $2.5 million milestone payment to Cara Royalty Sub upon the achievement of a 2024 sales milestone of KORSUVA in Japan. Cara achieved this milestone in the fourth quarter of 2024. This milestone payment is due in the first quarter of 2025.

The Original HCR Agreement will automatically expire, and the payment of Royalties to HCR will cease, when HCR has received payments of Royalties equal to two times the aggregate amount of payments made by HCR under the Original HCR Agreement if achieved on or prior to December 31, 2029, or 2.8 times the aggregate amount of payments made by HCR under the Original HCR Agreement, if not achieved on or prior to December 31, 2029. In the event of a change of control, Cara Royalty Sub will pay to HCR an amount equal to 2.8 times the aggregate amount of payments made by HCR less the total net amounts paid by Cara Royalty Sub to HCR as of the effective date of control. In certain situations, Cara Royalty Sub would not be obligated to pay the change of control payment to HCR. After the Original HCR Agreement expires, all rights to receive the Royalties return to Cara Royalty Sub.

### Collaboration and License Agreements

#### Agreements with CSL Vifor

Cara is party to two separate license agreements with CSL Vifor. In October 2020, Cara granted CSL Vifor an exclusive license solely in the United States to use, distribute, offer for sale, promote, sell, and otherwise commercialize KORSUVA (difelikefalin) injection for all therapeutic uses relating to the inhibition, prevention or treatment of itch associated with pruritus in hemodialysis and peritoneal dialysis patients in the United States.

Cara received an upfront payment of $100.0 million and an additional payment of $50.0 million for the purchase of an aggregate of 244,963 shares of Cara common stock at a price of $204.11 per share, which represented a premium over a pre-determined average closing price of the common stock. The U.S. regulatory approval of KORSUVA injection in August 2021 triggered an additional $50.0 million equity purchase by CSL Vifor in October 2021, in which Cara sold an aggregate of 273,533 shares of Cara common stock at a price of $182.76 per share, which represented a 20% premium to the 30-day trailing average price of the common stock. In addition, pursuant to this agreement, Cara is eligible to receive payments of up to $240.0 million upon the achievement of certain sales-based milestones. However, based on the limited commercial success of KORSUVA injection, Cara does not expect to achieve these sales-based milestones.

Pursuant to the agreement for commercialization of KORSUVA in the United States, Cara is generally entitled to 60% of the net profits from sales of KORSUVA injection in the United States and CSL Vifor is entitled to 40% of such net profits (excluding sales to Fresenius Medical Center dialysis clinics, compensation for which is governed by a separate agreement), subject to potential temporary adjustment in future years based on certain conditions. Under this agreement, in consideration of CSL Vifor’s conduct of the marketing, promotion, selling and distribution of KORSUVA injection in the United States, Cara pays a marketing and distribution fee to CSL Vifor based on the level of annual net sales. This fee as well as CSL Vifor’s cost of goods sold, or COGS, are deducted from net sales in calculating the net profits that are subject to the profit-sharing arrangement under the agreement.

Under a separate agreement with CSL Vifor, in May 2018, Cara granted CSL Vifor a license to seek regulatory approval to commercialize, import, export, use, distribute, offer for sale, promote, sell and otherwise commercialize KORSUVA (difelikefalin) injection for all therapeutic uses to prevent, inhibit or treat itch associated with pruritus in hemodialysis and peritoneal-dialysis patients worldwide (excluding the United States, Japan and South Korea). Under the agreement, CSL Vifor also has the right to promote KORSUVA injection in the United States in the dialysis clinics of Fresenius Medical Care North America, or FMCNA, under a profit-sharing arrangement.

Upon entry into this agreement, Cara received a non-refundable, non-creditable $50.0 million upfront payment for the purchase of an aggregate of 97,902 shares of Cara common stock at a price of $204.29 per share, which represented a premium over a pre-determined average closing price of the common stock.

As a result of the European Commission’s regulatory approval of Kapruvia in April 2022, Cara received a $15.0 million regulatory milestone payment from CSL Vifor. After U.S. regulatory approval of KORSUVA injection in August 2021, Cara received a $15.0 million regulatory milestone payment.

Cara is eligible to receive from CSL Vifor commercial milestone payments in the aggregate of up to $440.0 million, all of which milestones are sales related. Cara is also eligible to receive tiered double-digit royalty payments based on annual net sales, as defined, of KORSUVA (difelikefalin) injection in the licensed territories. In the United States, CSL Vifor will promote KORSUVA (difelikefalin) injection in the dialysis clinics of FMCNA under a profit-sharing arrangement (subject to the terms and conditions of this agreement) based on net FMCNA clinic sales) and Vifor Fresenius Medical Care Renal Pharma Ltd. is entitled to 50% of such net profits, subject to potential adjustments in a calendar year based on certain conditions. During the fourth quarter of 2023, Cara entered into the Original HCR Agreement pursuant to which it sold its future royalties and milestone payments under this agreement to HCR (see “Royalty Purchase and Sale Agreement” above).

#### Maruishi Pharmaceutical Co., Ltd., or Maruishi

In April 2013, Cara entered into a license agreement with Maruishi, or the Maruishi Agreement, under which it granted Maruishi an exclusive license to develop, manufacture and commercialize drug products containing difelikefalin in Japan in the acute pain and uremic pruritus fields. Maruishi has a right of first negotiation for any other indications for which Cara develops difelikefalin and, under certain conditions, Maruishi may substitute another pruritus indication for the uremic pruritus indication originally included in its license from Cara. Maruishi’s right of first negotiation has expired for the indication of chronic pruritus associated with NP. Maruishi is required to use commercially reasonable efforts, at its expense, to develop, obtain regulatory approval for and commercialize difelikefalin in Japan. Cara is required to use commercially reasonable efforts, at its expense, to develop, obtain regulatory approval for and commercialize difelikefalin in the United States.

In January 2022, Maruishi and its sublicensee Kissei confirmed the primary endpoint was achieved in a Japanese Phase 3 clinical study (double-blind, placebo-controlled period) of difelikefalin injection for the treatment of pruritus in hemodialysis patients. In the Phase 3 study, 178 patients were administered difelikefalin or placebo for 6 weeks followed by an open-label extension period of difelikefalin administration for 52 weeks. The primary endpoint, change in itch NRS score, and the secondary endpoint, change in itching scores of Shiratori severity criteria, were significantly improved from baseline compared to the placebo group. Difelikefalin was well-tolerated.

Under the terms of the Maruishi Agreement, Cara received a non-refundable and non-creditable upfront license fee of $15.0 million and is eligible to receive up to an aggregate of $10.5 million in clinical development and regulatory milestones (before contractual foreign currency exchange adjustments). In January 2021, Cara met the milestone criteria, as set forth in the Maruishi Agreement, for Maruishi’s first initiation of a Phase 3 trial for uremic pruritus in Japan. As a result, Cara received the $2.0 million milestone payment ($1.9 million after contractual foreign currency exchange adjustments) in May 2021.

In September 2022, Maruishi submitted a New Drug Application in Japan for approval of difelikefalin injection for the treatment of pruritus in hemodialysis patients. In September 2023, Maruishi received manufacturing and marketing approval from Japan’s Ministry of Health, Labour and Welfare for KORSUVA IV Injection Syringe for the treatment of pruritus in hemodialysis patients. In conjunction with the approval, Cara earned a $1.4 million milestone payment per the terms of the licensing agreement. In November 2023, Cara entered into an active pharmaceutical ingredient, or API, supply agreement with Maruishi for difelikefalin.

To date, Cara has received $6.5 million (before contractual foreign currency exchange adjustments) of clinical development and regulatory milestones from Maruishi. Cara is also eligible to receive a one-time sales milestone of one billion Yen when a certain sales level is attained. Cara also receives a mid-double-digit percentage of all non-royalty payments received by Maruishi from its sublicensees, if any, and tiered royalties based on net sales, if any, with minimum royalty rates in the low double digits and maximum royalty rates in the low twenties. Maruishi’s obligation to pay Cara royalties continues, on a product-by-product basis, until the expiration of the last-to-expire licensed patent covering such product or the later expiration of any market exclusivity period. During the fourth quarter of 2023, Cara entered into the Original HCR Agreement pursuant to which it sold its future royalties and milestone payments under the Maruishi Agreement to HCR (see “Royalty Purchase and Sale Agreement” above). Cara expects to assign the Maruishi Agreement to CSL Vifor in connection with the Merger and Asset Disposition.

#### Chong Kun Dang Pharmaceutical Corporation, or CKDP

In April 2012, Cara entered into a license agreement with CKDP, or the CKDP Agreement, under which it granted CKDP an exclusive license to develop, manufacture and commercialize drug products containing difelikefalin in South Korea. CKDP is required to use commercially reasonable efforts, at its expense, to develop, obtain regulatory approval for and commercialize difelikefalin in South Korea. Cara is required to use commercially reasonable efforts, at its expense, to develop, obtain regulatory approval for and commercialize difelikefalin in the United States.

Under the terms of the CKDP Agreement, Cara received a non-refundable and non-creditable $0.6 million upfront payment and is eligible to receive up to an aggregate of $3.8 million in development and regulatory milestones (before South Korean withholding taxes). To date, Cara has received $2.3 million (before South Korean withholding tax) of development and regulatory milestones. Cara is also eligible to receive a mid-double-digit percentage of all non-royalty payments received by CKDP from its sublicensees, if any, and tiered royalties ranging from the high single digits to the high teens based on net sales, if any. CKDP’s obligation to pay Cara royalties continues, on a product-by-product basis, until the expiration of the last-to-expire licensed patent covering such product or the later expiration of any market exclusivity period.

The CKDP Agreement continues until CKDP no longer has any obligation to pay Cara royalties on any product. Either Cara or CKDP may terminate the CKDP Agreement for the other party’s breach of the CKDP Agreement or bankruptcy. CKDP may terminate the CKDP Agreement if any of the licensed patent rights is invalid, unenforceable, is narrowed in scope or is deemed unpatentable, except as a result of a challenge by CKDP, or a third party commercializes a product containing a compound identical to difelikefalin without infringing any of the licensed patent rights in South Korea. Cara may terminate the CKDP Agreement if CKDP challenges the licensed patent rights or if a third party in South Korea owns an issued patent that claims difelikefalin and CKDP’s sale of products would infringe that patent. In addition, in connection with the CKDP Agreement, CKDP made a $0.4 million equity investment in Cara. Cara expects to assign CKDP Agreement to CSL Vifor in connection with the Merger and Asset Disposition.

### Manufacturing and License Agreements

#### Polypeptide Laboratories S.A., or PPL

In July 2021, Cara entered into an API Commercial Supply Agreement with Polypeptide Laboratories S.A., or PPL, that defines each party’s responsibilities with respect to PPL’s manufacture and supply of API for the difelikefalin injection product candidate. Under the API Commercial Supply Agreement, PPL shall manufacture API at its facility for sale and supply to Cara, in the amounts as set forth in purchase orders to be provided by Cara. Cara will be required to purchase its requirements of API for each year of the term of the agreement, based on internal forecasts.

The API Commercial Supply Agreement will continue until the fifth anniversary of the approval by the FDA of the New Drug Application for KORSUVA injection, unless the API Commercial Supply Agreement is earlier terminated, and will automatically be extended for successive five-year periods unless either party gives notice to the other party of its intention to terminate. Cara expects to assign the API Commercial Supply Agreement to CSL Vifor in connection with the Merger and Asset Disposition.

#### Enteris Biopharma, Inc., or Enteris

In August 2019, Cara entered into a non-exclusive license agreement with Enteris Biopharma, Inc. (Enteris), or the Enteris License Agreement. Pursuant to the Enteris License Agreement, Enteris granted to Cara a non-exclusive, royalty-bearing license, including the right to grant sublicenses, under certain proprietary technology and patent rights related to or covering formulations for oral delivery of peptide active pharmaceutical ingredients with functional excipients to enhance permeability and/or solubility, known as Enteris’s Peptelligence® technology, to develop, manufacture and commercialize products using such technology worldwide, excluding Japan and South Korea.

As consideration for the licensed rights under the Enteris License Agreement, Cara paid an upfront fee equal to $8.0 million, consisting of $4.0 million in cash and $4.0 million in shares of Cara common stock.

Cara is also obligated, pursuant to the Enteris License Agreement, to pay Enteris (1) milestone payments upon the achievement of certain development, regulatory and commercial milestones and (2) low-single digit royalty percentages on net sales of licensed products, subject to reductions in specified circumstances. Until the second anniversary of the entry into the Enteris License Agreement, Cara had the right, but not the obligation, to terminate its obligation to pay any royalties under the Royalty Buyout. Cara did not exercise its Royalty Buyout right and such right expired in August 2021. During the years ended December 31, 2024 and 2023, no milestone payments or royalties were paid to Enteris by Cara in relation to the Enteris License Agreement. During the year ended December 31, 2022, Cara paid $5.0 million to Enteris for milestones earned in relation to the Enteris License Agreement, which were recorded in R&D expense for 2022.

The Enteris License Agreement will expire on a country-by-country, licensed product-by-licensed product basis upon the later of (1) the expiration (or invalidation) of all valid claims in licensed patent rights that cover such product in such country, (2) the end of the calendar quarter in which generic competition (as defined in the Enteris License Agreement) occurs for such product in such country and (3) ten years from the first commercial sale of such product.

Either party may terminate the Enteris License Agreement upon written notice if the other party has failed to remedy a material breach within 60 days (or 30 days in the case of a material breach of a payment obligation). Enteris may terminate the Enteris License Agreement upon 30 days’ written notice to Cara if Cara or any of its affiliates formally challenge the validity of any licensed patent rights or assists a third party in doing so. Cara may terminate the Enteris License Agreement for any reason or no reason (a) prior to receipt of first regulatory approval for a licensed product in the United States for any indication upon 30 days’ prior written notice to Enteris or (b) on or after receipt of first regulatory approval for a licensed product in the United States for any indication upon 60 days’ prior written notice to Enteris. In June 2024, Cara announced its decision to discontinue the clinical program in NP following the outcome from the dose-finding Part A of the KOURAGE-1 study evaluating the efficacy and safety of oral difelikefalin for moderate-to-severe pruritus in adult patients with NP.

#### Patheon UK Limited, or Patheon

In July 2019, Cara entered into a Master Services Agreement, or MSA, with Patheon UK Limited, or Patheon. The MSA governs the general terms under which Patheon, or one of its affiliates, will provide non-exclusive manufacturing services to Cara for the drug products specified by Cara from time to time. Pursuant to the MSA, Cara have agreed to order from Patheon at least a certain percentage of its commercial requirements for a product under a related Product Agreement. Each Product Agreement that Cara may enter into from time to time will be governed by the terms of the MSA, unless expressly modified in such Product Agreement.

The MSA had an initial term ending December 31, 2024, which automatically renewed after the initial term for successive terms of two years until December 31, 2026.

Either party may terminate the MSA or a Product Agreement upon written notice if the other party (1) has failed to remedy a material breach within a specified time or (2) is declared insolvent or bankrupt, voluntarily files a petition of bankruptcy or assigns such agreement for the benefit of creditors. Cara may terminate a Product Agreement (a) upon 90 days’ prior written notice if any governmental agency takes any action that prevents Cara from selling the relevant product in the relevant territory, (b) upon six months’ prior written notice if Cara does not intend to order manufacturing services due to a product’s discontinuance in the market, or (c) upon 90 days’ prior written notice if Cara determines that the manufacture or supply of a product likely infringes third-party rights. Patheon may terminate the MSA or a Product Agreement (i) upon six months’ prior written notice if Cara assigns such agreement to an assignee that is unacceptable to Patheon for certain reasons, or (ii) upon 30 days’ prior written notice if, after the first year of commercial sales, Cara forecasts zero volume for 12 months.

The MSA contains, among other provisions, customary representations and warranties by the parties, a grant to Patheon of certain limited license rights to Cara’s intellectual property in connection with Patheon’s performance of the services under the MSA, certain indemnification rights in favor of both parties, limitations of liability and customary confidentiality provisions.​

Also in July 2019, Cara entered into two related Product Agreements under the MSA, one with each of Patheon and Patheon Manufacturing Services LLC, or Patheon Greenville, to govern the terms and conditions of the manufacture of commercial supplies of difelikefalin injection, Cara’s lead product candidate. Pursuant to the Product Agreements, Patheon and Patheon Greenville will manufacture commercial supplies of difelikefalin injection at the Monza, Italy and Greenville, North Carolina manufacturing sites, respectively, from API supplied by Cara. Patheon and Patheon Greenville will be responsible for supplying the other required raw materials and packaging components, and will also provide supportive manufacturing services such as quality control testing for raw materials, packaging components and finished product.

In December 2023, Cara entered into an agreement with Patheon to reimburse Patheon approximately $1.7 million for forecasted manufacturing commitments that are no longer needed due to the reduced demand expectations of KORSUVA in the United States, all of which had been paid as of December 31, 2024. Cara expects to assign the MSA to CSL Vifor in connection with the Merger and Asset Disposition.

### Intellectual Property

We strive to protect the proprietary technologies that we believe are important to our business, including seeking and maintaining patent protection intended to cover the composition of matter of our product candidate, its methods of use, related technology and other inventions that are important to our business. As more fully described below, patent applications have been filed covering compositions and novel formulations of these compositions, as well as methods of using difelikefalin and related compounds. We own the patent portfolio of eighteen issued U.S. patents covering KOR agonists, sixteen of which cover composition of matter of difelikefalin and its uses; six of these include composition of matter claims directed to difelikefalin, and ten patents include claims to its uses. All of these U.S. patents covering difelikefalin and its uses are expected to expire no earlier than November 12, 2027. Additionally, three U.S. patents have been granted with claims to difelikefalin-like dimer compounds and their uses. We have filed patent applications in the United States and internationally claiming novel oral formulations of difelikefalin. Three U.S. patents with claims to oral formulations of difelikefalin that are not currently under development have been granted and are expected to expire no earlier than September 13, 2039. Related U.S. and foreign applications, if granted, would also be expected to expire no earlier than September 13, 2039. We also rely on trade secrets and careful monitoring of our proprietary information to protect aspects of our business that are not amenable to, or that we do not consider appropriate for, patent protection.

Our success will depend significantly on our ability to obtain and maintain patent and other proprietary protection for commercially important technology, inventions and know-how related to our business, defend and enforce our patents, maintain our licenses to use intellectual property owned by third parties, preserve the confidentiality of our trade secrets and operate without infringing valid and enforceable patents and other proprietary rights of third parties. We also rely on know-how, and continuing technological innovation to develop, strengthen, and maintain our proprietary position in the field of chronic pruritus.

A third party may hold intellectual property, including patent rights, which are important or necessary to the development of our products. It may be necessary for us to use the patented or proprietary technology of third parties to commercialize our products, in which case we would be required to obtain a license from these third parties on commercially reasonable terms, or our business could be harmed, possibly materially. If we were not able to obtain a license or were not able to obtain a license on commercially reasonable terms, our business could be harmed, possibly materially.

The patent positions of biopharmaceutical companies like us are generally uncertain and involve complex legal, scientific and factual questions. In addition, the coverage claimed in a patent application can be significantly reduced before the patent is issued, and the patent’s scope can be modified after issuance by later judicial decisions. Consequently, we do not know whether our product candidates will be adequately protectable or remain protected by enforceable patents. We cannot predict whether the patent applications we are currently pursuing will issue as patents in any particular jurisdiction or whether the claims of any issued patents will provide sufficient proprietary protection from competitors. Any patents that we hold may be challenged, circumvented or invalidated by third parties.

Because patent applications in the United States and certain other jurisdictions are maintained in secrecy for up to 18 months, and since publication of discoveries in the scientific or patent literature often lags behind actual discoveries, we cannot be certain of our entitlement to the inventions covered by pending patent applications. Moreover, although unlikely, we may have to participate in interference proceedings declared by the United States Patent and Trademark Office, or USPTO, to determine priority of invention, or in post-grant challenge proceedings in the USPTO, or a foreign patent office such as oppositions, inter-partes review, post grant review, or a derivation proceeding, that challenge our entitlement to an invention or the patentability of one or more claims in our patent applications or issued patents. Such proceedings could result in substantial cost, even if the eventual outcome is favorable to us.

The patent portfolios for our most advanced programs are summarized below.

### Difelikefalin

Our synthetic peptide amide kappa opioid agonist patent portfolio is wholly owned by us. The portfolio includes eighteen issued U.S. patents (U.S. Patent Nos. 7,402,564; 7,713,937; 7,727,963; 7,842,662; 8,217,007; 8,236,766; 8,486,894; 8,536,131; 8,906,859; 8,951,970; 9,321,810; 9,334,305; 9,359,399; 10,017,536; 10,138,270; 10,793,596; 10,913,769 and 11,033,629) with claims to compositions of a wide range of synthetic peptide amide kappa opioid agonists, including difelikefalin and related molecules, as well as formulations containing and methods of using these compounds. These patents claiming difelikefalin compositions are due to expire November 12, 2027. U.S. Patent Nos. 11,033,629, 11,684,674 and 11,986,509 with claims to oral formulations of difelikefalin that are not currently under development are each due to expire September 13, 2039.

We have listed twelve of the patents claiming difelikefalin acetate and/or its uses in the Orange Book, a listing of patents relating to approved drug products maintained by the FDA. Difelikefalin acetate has been awarded a five-year data exclusivity from the approval date, i.e. until August 23, 2026, prohibiting the FDA from accepting an application for approval of a difelikefalin product from a generic manufacturer until after the exclusivity period expires. In addition, we have also submitted an application for a patent term extension of one of our difelikefalin U.S. patents, which if granted for the additional full five-year extension requested, would extend the patent term to November 12, 2032.

Foreign applications relating to difelikefalin and related molecules, as well as formulations containing and methods of using these compounds, were filed in more than 40 foreign countries. National patents have been granted in 27 European countries, as well as in Australia, Brazil, Canada, China, Hong Kong, India, Israel, Japan, Malaysia, Mexico, New Zealand, Russian Federation, Singapore, South Africa and South Korea. These granted foreign patents with claims to difelikefalin are due to expire no earlier than November 12, 2027. We have applied for supplementary patent certificates, or SPCs, for the basic product patent in Europe, including the five major European markets (France, Spain, Italy, Germany, and the UK). In the five major European markets, the SPC has been granted in France, Spain and Italy, (extending the patent term to November 12, 2032) and are pending in Germany and the UK. We have also applied for a patent term extension in Japan, which is pending.

We also own pending U.S. continuation and foreign patent applications with claims to oral formulations containing difelikefalin and medium chain fatty acid glycerides as absorption enhancers that are not currently under development in Australia, Brazil, Canada, China, Europe, Japan, Hong Kong, Israel, India, South Korea, Malaysia, Mexico, New Zealand, Philippines, Russian Federation, Saudi Arabi, UAE, and South Africa. If granted, these patents would expire no earlier than September 13, 2039.

In addition, we own pending U.S. and foreign patent applications with claims to oral formulations containing difelikefalin and oligosaccharides not currently under development in Australia, Brazil, Canada, China, Europe, Japan, Hong Kong, Israel, India, South Korea, Malaysia, Mexico, New Zealand, Philippines, Russian Federation, Saudi Arabi, UAE, and South Africa. If granted, these patents would expire no earlier than March 18, 2041.

### Other Cara Patents and Patent Applications

The term of individual patents depends upon the legal term of the patents in the countries in which they are obtained. In most countries in which we file, the patent term is 20 years from the earliest date of filing a PCT application or a non-provisional patent application. The term of a patent in the United States can be adjusted and extended due to the failure of the USPTO following certain statutory and regulation deadlines for progressing prosecution and issuing a patent.

In the United States, the patent term of a patent that covers an FDA-approved drug may also be eligible for patent term extension, which permits patent term restoration as compensation for a portion of the patent term lost during the FDA regulatory review process. The Hatch-Waxman Act permits a patent term extension of up to five years beyond the expiration of the patent. The length of the patent term extension is related to the length of time the drug is under regulatory review. Patent extension cannot extend the remaining term of a patent beyond a total of 14 years from the date of product approval and only one patent applicable to an approved drug may be extended. Similar provisions are available in Europe and other non-United States jurisdictions to extend the term of a patent that covers an approved drug. In the future, if and when our pharmaceutical products receive FDA approval, we expect to apply for patent term extensions on patents covering those products. Although we intend to seek patent term extensions to any of our issued patents in any jurisdiction where these are available there is no guarantee that the applicable authorities, including the FDA in the United States, will agree with our assessment of whether such extensions should be granted, and even if granted, the length of such extensions.

### Cara Trademark Applications and Registrations

We rely on our U.S. and foreign trademarks for authentication of our current and future products and for protection against counterfeits. In the United States, trademarks may be reserved under an “Intent to Use” designation but may only be registered upon a showing of actual use in the stream of commerce. Many countries permit registration without such a showing of actual use. However, such registrations become vulnerable to cancellation after a designated period of non-use. For example, a trademark registered in EU States may be cancelled for non-use after five years from the date of registration. Trademark registrations can in principle last for as long as the owner uses the trademark and pays the maintenance fees due at regular intervals (every ten years in most jurisdictions after complying with filing requirements for confirmations of use and paying the designated fees during the first ten years from the registration date).

We own the registered trademark “KORSUVA” in the United States and in fourteen foreign countries (Australia, Brazil, Canada, China, India, Israel, Japan, Kuwait, Mexico, New Zealand, Norway, South Korea, Switzerland, and the UK). In addition, we own three registered Japanese trademarks for Katakana versions of “KORSUVA” as may be pronounced in the Japanese language: “KORSUVA” Katakana version 1: “ko-ru-su-ba” コルスバ; Katakana version 2: “ko-ru-su-o-ba” コルスーバ; and Katakana version 3 “ko-o-su-ba” コースバ.

Additionally, we own the U.S. trademark application for “KAPRUVIA” currently pending under an “Intent to Use” designation, as well as the “KAPRUVIA” trademark registered in all twenty-seven EU States (Austria, Belgium, Bulgaria, Croatia, Republic of Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain and Sweden) and fourteen additional countries: Albania, Australia, China, Iceland, Israel, Monaco, New Zealand, North Macedonia, Norway, Russian Federation, Serbia, Switzerland, Turkey and the UK.

We rely on trade secret protection for our confidential and proprietary information. Although we take steps to protect our proprietary information and trade secrets, including through contractual means with our employees and consultants, third parties may independently develop substantially equivalent proprietary information and techniques or otherwise gain access to our trade secrets or disclose our technology. Thus, we may not be able to adequately protect our trade secrets to prevent harm to our business. It is our policy to require our employees, consultants, outside scientific collaborators, sponsored researchers and other advisors to execute confidentiality agreements upon the commencement of employment or consulting relationships with us. These agreements provide that all confidential information concerning our business or financial affairs developed or made known to the individual during the course of the individual’s relationship with us is to be kept confidential and not disclosed to third parties except in specific circumstances. In the case of employees, the agreements provide that all inventions conceived by the individual, and which are related to our current or planned business or research and development, or R&D, or made during normal working hours, on our premises or using our equipment or proprietary information, are our exclusive property.

### Competition

The biotechnology and pharmaceutical industries are characterized by rapidly advancing technologies, intense competition and a strong emphasis on proprietary products. Cara believes that its technology, knowledge, experience and scientific resources provide it with competitive advantages, Cara faces potential competition from many different sources, including large pharmaceutical and biotechnology companies, specialty pharmaceutical and generic drug companies, and medical technology companies. Any product candidates that Cara successfully develops and commercializes will compete with existing therapies and new therapies that may become available in the future.

Cara believes the key competitive factors that will affect the development and commercial success of its product are its safety, efficacy and tolerability profile, reliability, convenience of dosing, price and reimbursement from government and third-party payers. Cara’s commercial opportunity could be reduced or eliminated if its competitors develop and commercialize products that are safer, more effective, have fewer or less severe side effects, are more convenient or are less expensive than any products that Cara may develop. Cara’s competitors also may obtain FDA or other regulatory approval for their products more rapidly than Cara may obtain approval for its, which could result in its competitors establishing a strong market position before Cara is able to enter the market. In addition, Cara’s ability to compete may be affected in many cases by insurers or other third-party payers seeking to encourage the use of generic products. Generic products currently on the market are often tried off-label for the indication that Cara is pursuing, and additional products are expected to become available on a generic basis over the coming years. Cara expects that its product will be priced at a significant premium over generic products.

### Manufacturing

Cara does not have any manufacturing facilities. Cara currently relies, and expects to continue to rely, on third parties for the commercial manufacture for KORSUVA injection. Cara has negotiated long-term commitments with at least one primary supplier for its primary manufacturing and distribution functions. Cara has entered into a commercial manufacturing agreement with Patheon for KORSUVA injection, a commercial supply agreement with PPL to produce API, and a commercial packaging agreement with PCI Pharma Services. During 2023, Cara negotiated to reduce its commitment based on much lower-than-expected demand going forward for KORSUVA injection in the United States.

Cara’s product candidate is a small peptide and is manufactured in reliable and reproducible synthetic processes from available starting materials. The chemistry is amenable to scale up and does not require any special equipment or technology in the manufacturing process.

### Government Regulation and Product Approval

Government authorities in the United States, at the federal, state and local level, and in other countries extensively regulate, among other things, the research, development, testing, manufacture, packaging, storage, recordkeeping, labeling, advertising, promotion, distribution, marketing, import and export of pharmaceutical products. The processes for obtaining regulatory approvals in the United States and in foreign countries, along with subsequent compliance with applicable statutes and regulations, require the expenditure of substantial time and financial resources.

### FDA Regulation

In the United States, the FDA regulates drugs under the Federal Food, Drug, and Cosmetic Act, or FDCA, and its implementing regulations. The process of obtaining regulatory approvals and the subsequent compliance with appropriate federal, state, local and foreign statutes and regulations requires the expenditure of substantial time and financial resources. Failure to comply with the applicable United States requirements at any time during the product development process, approval process or after approval, may subject an applicant to a variety of administrative or judicial sanctions, such as the FDA’s refusal to approve pending NDAs, withdrawal of an approval, imposition of a clinical hold, issuance of warning or untitled letters, product recalls, product seizures, total or partial suspension of production or distribution, injunctions, fines, refusals of government contracts, restitution, disgorgement or civil or criminal penalties.

The process required by the FDA before a drug may be marketed in the United States generally involves the following:

- completion of preclinical laboratory tests, animal studies and formulation studies in compliance with the FDA’s good laboratory practice, or GLP, regulations;
- submission to the FDA of an IND which must become effective before human clinical trials may begin;
- approval by an independent institutional review board, or IRB, at each clinical site before each trial may be initiated;
- performance of human clinical trials, including adequate and well-controlled clinical trials, in accordance with good clinical practices, or cGCP, to establish the safety and efficacy of the proposed drug product for each indication;
- submission to the FDA of an NDA;
- satisfactory completion of an FDA advisory committee review, if applicable;
- satisfactory completion of an FDA inspection of the manufacturing facility or facilities at which the product is produced to assess compliance with current good manufacturing practices, or cGMP, and to assure that the facilities, methods and controls are adequate to preserve the drug’s identity, strength, quality and purity, as well as satisfactory completion of an FDA inspection of selected clinical sites to determine cGCP compliance; and
- FDA review and approval of the NDA.

***Preclinical Studies.*** Preclinical studies include laboratory evaluation of drug substance chemistry, toxicity and drug product formulation, as well as animal studies to assess potential safety and efficacy. An IND sponsor must submit the results of the preclinical tests, together with manufacturing information, analytical data and any available clinical data or literature, among other things, to the FDA as part of an IND. Manufacture of drug substance, drug product and the labeling and distribution of clinical supplies must all comply with cGMP standards. Some preclinical testing may continue even after the IND is submitted. An IND automatically becomes effective 30 days after receipt by the FDA, unless before that time the FDA raises concerns or questions related to one or more proposed clinical trials and places the trial on a clinical hold. In such a case, the IND sponsor and the FDA must resolve any outstanding concerns before the clinical trial can begin. As a result, submission of an IND may not result in the FDA allowing clinical trials to commence.

***Clinical Trials.*** Clinical trials involve the administration of the investigational new drug to human subjects under the supervision of qualified investigators in accordance with cGCP requirements, which include the requirement that all research subjects provide their informed consent in writing for their participation in any clinical trial. Clinical trials are conducted under protocols detailing, among other things, the objectives of the trial, the parameters to be used in monitoring safety and the effectiveness criteria to be evaluated. A protocol for each clinical trial and any subsequent protocol amendments must be submitted to the FDA as part of the IND. In addition, an IRB at each institution participating in the clinical trial must review and approve the plan for any clinical trial before it commences at that institution, and the IRB must continue to oversee the clinical trial while it is being conducted. Information about certain clinical trials must be submitted within specific timeframes to the National Institutes of Health, or NIH, for public dissemination on their ClinicalTrials.gov website.

Human clinical trials are typically conducted in three sequential phases, which may overlap or be combined. In Phase 1, the drug is initially introduced into healthy human subjects or patients with the target disease or condition and tested for safety, dosage tolerance, absorption, metabolism, distribution, excretion and, if possible, to gain an initial indication of its effectiveness. In Phase 2, the drug typically is administered to a limited patient population to identify possible adverse effects and safety risks, to preliminarily evaluate the efficacy of the product for specific targeted diseases and to determine dosage tolerance and optimal dosage. In Phase 3, the drug is administered to an expanded patient population, generally at geographically dispersed clinical trial sites, in well-controlled clinical trials to generate enough data to statistically evaluate the efficacy and safety of the product for approval, to establish the overall risk-benefit profile of the product and to provide adequate information for the labeling of the product.

Progress reports detailing the results of the clinical trials must be submitted at least annually to the FDA and more frequently if serious adverse events occur. Phase 1, Phase 2 and Phase 3 clinical trials may not be completed successfully within any specified period, or at all. Furthermore, the FDA or the sponsor may suspend or terminate a clinical trial at any time on various grounds, including a finding that the research subjects are being exposed to an unacceptable health risk. Similarly, an IRB can suspend or terminate approval of a clinical trial at its institution if the clinical trial is not being conducted in accordance with the IRB’s requirements or if the drug has been associated with unexpected serious harm to patients.

***Marketing Approval.*** Assuming successful completion of the required clinical testing, the results of the preclinical and clinical studies, together with detailed information relating to the product’s chemistry, manufacture, controls and proposed labeling, among other things, are submitted to the FDA as part of an NDA requesting approval to market the product for one or more indications. In most cases, the submission of an NDA is subject to a substantial application user fee.

Under the Pediatric Research Equity Act, or PREA, an NDA or supplement to an NDA must contain data that are adequate to assess the safety and effectiveness of the drug for the claimed indications in all relevant pediatric subpopulations, and to support dosing and administration for each pediatric subpopulation for which the product is safe and effective. The FDA may, on its own initiative or at the request of the applicant, grant deferrals for submission of some or all pediatric data until after approval of the product for use in adults, or full or partial waivers from the pediatric data requirements.

The FDA conducts a preliminary review of all NDAs within the first 60 days after submission, before accepting them for filing, to determine whether they are sufficiently complete to permit substantive review. The FDA may request additional information rather than accept an NDA for filing. In this event, the application must be resubmitted with the additional information. The resubmitted application is also subject to review before the FDA accepts it for filing. Once the submission is accepted for filing, the FDA begins an in-depth substantive review. The FDA reviews an NDA to determine, among other things, whether the drug is safe and effective and whether the facility in which it is manufactured, processed, packaged or held meets standards designed to assure the product’s continued safety, quality and purity.

The FDA may refer an application for a novel drug to an external advisory committee. An advisory committee is a panel of independent experts, including clinicians and other scientific experts, that reviews, evaluates and provides a recommendation as to whether the application should be approved and under what conditions. The FDA is not bound by the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions.

The FDA also may require submission of a risk evaluation and mitigation strategy, or REMS, to mitigate any identified or suspected serious risks and ensure safe use of the drug. The REMS plan could include medication guides, physician communication plans, assessment plans, and elements to assure safe use, such as restricted distribution methods, patient registries or other risk minimization tools.

Before approving an NDA, the FDA typically will inspect the facility or facilities where the product is manufactured, referred to as a Pre-Approval Inspection. The FDA will not approve an application unless it determines that the manufacturing processes and facilities are in compliance with cGMP requirements and adequate to assure consistent production of the product within required specifications. Additionally, before approving an NDA, the FDA will typically inspect one or more clinical trial sites to assure compliance with cGCP.

The testing and approval process for an NDA requires substantial time, effort and financial resources, and each may take several years to complete. Data obtained from preclinical and clinical testing are not always conclusive and may be susceptible to varying interpretations, which could delay, limit or prevent regulatory approval. The FDA may not grant approval of an NDA on a timely basis, or at all.

After evaluating the NDA and all related information, including the advisory committee recommendation, if any, and inspection reports regarding the manufacturing facilities and clinical trial sites, the FDA may issue an approval letter, or, in some cases, a complete response letter. A complete response letter generally contains a statement of specific conditions that must be met in order to secure final approval of the NDA and may require additional clinical or preclinical testing in order for FDA to reconsider the application. Even with submission of this additional information, the FDA ultimately may decide that the application does not satisfy the regulatory criteria for approval. If and when those conditions have been met to the FDA’s satisfaction, the FDA may issue an approval letter. An approval letter authorizes commercial marketing of the drug with specific prescribing information for specific indications.

Even if the FDA approves a product, it may limit the approved indications for use of the product, require that contraindications, warnings or precautions be included in the product labeling, including a boxed warning, require that post-approval studies, including Phase 4 clinical trials, be conducted to further assess a drug’s safety after approval, require testing and surveillance programs to monitor the product after commercialization, or impose other conditions, including distribution restrictions or other risk management mechanisms under a REMS which can materially affect the potential market and profitability of the product. The FDA may prevent or limit further marketing of a product based on the results of post-marketing studies or surveillance programs. After approval, some types of changes to the approved product, such as adding new indications, manufacturing changes, and additional labeling claims, are subject to further testing requirements and FDA review and approval.

***Post-Approval Requirements.*** Drugs manufactured or distributed pursuant to FDA approvals are subject to pervasive and continuing regulation by the FDA, including, among other things, requirements relating to recordkeeping, periodic reporting, product sampling and distribution, advertising and promotion, reporting of adverse experiences with the product, and compliance with any post-approval requirements imposed as a condition of approval, such as Phase 4 clinical trials and surveillance to assess safety and effectiveness after commercialization. After approval, most changes to the approved product, such as adding new indications or other labeling claims are subject to prior FDA review and approval. There also are continuing, annual program user fee requirements for any marketed products, as well as new application fees for supplemental applications with clinical data. In addition, drug manufacturers and other entities involved in the manufacture and distribution of approved drugs are required to register their establishments with the FDA and state agencies and are subject to periodic announced and unannounced inspections by the FDA and these state agencies for compliance with cGMP requirements. Changes to the manufacturing process are strictly regulated and often require prior FDA approval before being implemented. FDA regulations also require investigation and correction of any deviations from cGMP and impose reporting and documentation requirements upon the sponsor and any third-party manufacturers that the sponsor may decide to use. Accordingly, manufacturers must continue to expend time, money and effort in the area of production and quality control to maintain cGMP compliance.

Once an approval is granted, the FDA may withdraw the approval if compliance with regulatory requirements and standards is not maintained or if problems occur after the product reaches the market.

Later discovery of previously unknown problems with a product, including adverse events of unanticipated severity or frequency, or with manufacturing processes, or failure to comply with regulatory requirements, may result in mandatory revisions to the approved labeling to add new safety information; imposition of post-market studies or clinical trials to assess new safety risks; or imposition of distribution or other restrictions under a REMS program. Other potential consequences include, among other things:

- restrictions on the marketing or manufacturing of the product, complete withdrawal of the product from the market or product recalls;
- fines, warning letters or holds on post-approval clinical trials;
- refusal of the FDA to approve pending NDAs or supplements to approved NDAs, or suspension or revocation of product license approvals;
- product seizure or detention, or refusal to permit the import or export of products; or
- injunctions or the imposition of civil or criminal penalties.

The FDA strictly regulates marketing, labeling, advertising and promotion of products that are placed on the market. Although physicians, in the practice of medicine, may prescribe approved drugs for unapproved indications, pharmaceutical companies are required to promote their drug products only for the approved indications and in accordance with the provisions of the approved label. The FDA and other agencies actively enforce the laws and regulations prohibiting the promotion of off-label uses, and a company that is found to have improperly promoted off-label uses may be subject to significant liability. However, physicians may, in their independent medical judgment, prescribe legally available products for off-label uses. The FDA does not regulate the behavior of physicians in their choice of treatments but the FDA does restrict manufacturer’s communications on the subject of off-label use of their products.

In addition, the distribution of prescription pharmaceutical products is subject to the Drug Supply Chain Security Act and state laws that limit the distribution of prescription pharmaceutical product samples and impose requirements to ensure accountability in distribution.

### Fraud and Abuse, Data Privacy and Security and Transparency Laws and Regulations

In addition to FDA restrictions on marketing of pharmaceutical products, federal and state health care regulatory laws restrict business practices in the biopharmaceutical industry. These laws include, among other things, anti-kickback and false claims laws and regulations, physician payment transparency laws and regulations, as well as data privacy and security laws and regulations.

The federal Anti-Kickback Statute prohibits, among other things, any person or entity, from knowingly and willfully offering, paying, soliciting or receiving any remuneration, directly or indirectly, overtly or covertly, in cash or in kind, to induce or in return for purchasing, leasing, ordering, or arranging for or recommending the purchase, lease, or order of any item or service reimbursable under Medicare, Medicaid or other federal healthcare programs. The term “remuneration” has been interpreted broadly to include anything of value. The Anti-Kickback Statute has been interpreted to apply to arrangements between pharmaceutical manufacturers on one hand and prescribers, purchasers, and formulary managers on the other. There are a number of statutory exceptions and regulatory safe harbors protecting some common activities from prosecution. Practices that involve remuneration that may be alleged to be intended to induce prescribing, purchases, or recommendations may be subject to scrutiny if they do not qualify for an exception or safe harbor. Failure to meet all of the requirements of a particular applicable statutory exception or regulatory safe harbor does not make the conduct per se illegal under the Anti-Kickback Statute. Instead, the legality of the arrangement will be evaluated on a case-by-case basis based on a cumulative review of all of its facts and circumstances.

Additionally, the intent standard under the federal Anti-Kickback Statute was amended by the Patient Protection and Affordable Care Act, as amended by the Health Care Education Reconciliation Act (collectively, the “Health Care Reform Law”), to a stricter standard such that a person or entity no longer needs to have actual knowledge of the statute or specific intent to violate it in order to have committed a violation. In addition, the Health Care Reform Law provided that the government may assert that a claim including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the federal civil False Claims Act.

Federal false claims laws, including the federal civil False Claims Act prohibit, among other things, any person or entity from knowingly presenting, or causing to be presented, a false or fraudulent claim for payment to, or approval by, the federal government or knowingly making, using, or causing to be made or used a false record or statement material to a false or fraudulent claim to the federal government. A claim includes “any request or demand” for money or property presented to the U.S. government. The federal civil False Claims Act has been used to assert liability on the basis of kickbacks and other improper referrals, improperly reported government pricing metrics such as Best Price or Average Manufacturer Price, improper use of Medicare provider or supplier numbers when detailing a provider of services, improper promotion of off-label uses not expressly approved by FDA in a drug’s label, and allegations as to misrepresentations with respect to the services rendered. Additionally, the civil monetary penalties statute, which, among other things, imposes fines against any person or entity who is determined to have presented, or caused to be presented, claims to a federal healthcare program that the person knows, or should know, is for an item or service that was not provided as claimed or is false or fraudulent. The federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, created additional federal criminal statutes that prohibit knowingly and willfully executing, or attempting to execute, a scheme to defraud or to obtain, by means of false or fraudulent pretenses, representations, or promises, any of the money or property owned by, or under the custody or control of, any healthcare benefit program, including private third-party payers and knowingly and willfully falsifying, concealing or covering up by trick, scheme or device a material fact or making any materially false, fictitious or fraudulent statement in connection with the delivery of or payment for healthcare benefits, items or services relating to healthcare matters. Also, many states have similar fraud and abuse statutes or regulations that apply to items and services reimbursed under Medicaid and other state programs, or, in several states, apply regardless of the payer.

In addition, Cara is or may become subject to data privacy and security regulations by both the U.S. federal government and the state governments in which Cara conducts its business. HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act, or HITECH, and their respective implementing regulations, including the Final HIPAA Omnibus Rule published on January 25, 2013, imposes specified requirements on certain types of individuals and entities subject to the law, known as covered entities, such as certain healthcare providers, health plans, and healthcare clearinghouses, as well as their business associates that process individually identifiable health information on their behalf, relating to the privacy, security and transmission of individually identifiable health information as well as their covered subcontractors. Among other things, HITECH makes security standards and certain privacy standards directly applicable to the business associates of covered entities that perform services for them that involve the creation, use, maintenance or disclosure of, individually identifiable health information. HITECH also created four new tiers of civil monetary penalties, amended HIPAA to make civil and criminal penalties directly applicable to business associates, and gave state attorneys general new authority to file civil actions for damages or injunctions in federal courts to enforce the federal HIPAA laws and seek attorney’s fees and costs associated with pursuing federal civil actions. In addition, Cara is or may become subject to U.S. state laws (such as the California Consumer Privacy Act of 2018 (“CCPA”) and foreign laws (such as the EU’s General Data Protection Regulation 2016/679 (“EU GDPR”), the EU GDPR as it forms part of UK law by virtue of section 3 of the European Union (Withdrawal) Act 2018 (“UK GDPR”) that govern data privacy, security and protection. Many of these laws differ from each other in significant ways and may not have the same effect, both of which complicate compliance efforts to the extent Cara is or may become subject to these laws.

Additionally, federal transparency laws, including the federal Physician Payments Sunshine Act created under Section 6002 of the Health Care Reform Law and its implementing regulations, require that manufacturers of drugs, devices, biologics and medical supplies for which payment is available under Medicare, Medicaid or the Children’s Health Insurance Program (with certain exceptions) report annually to the Centers for Medicare & Medicaid Services, or CMS, information related to payments or other transfers of value made or distributed to physicians (defined to include doctors of medicine, dentists, optometrists, podiatrists and chiropractors), other healthcare professionals (such as physician assistants and nurse practitioners), and teaching hospitals, or to entities or individuals at their request or designation. Additionally, applicable manufacturers and applicable group purchasing organizations are required to report annually to CMS certain ownership and investment interests held by physicians (as defined above) and their immediate family members.

There are also an increasing number of analogous state laws that require manufacturers to file reports with states on pricing and marketing information, such as tracking and reporting of gifts, compensations, other remuneration and items of value provided to healthcare professionals and healthcare entities. For example, several states have enacted legislation requiring pharmaceutical companies to, among other things, establish and implement commercial compliance programs, file periodic reports with the state, make periodic public disclosures on sales, marketing, pricing, clinical trials and other activities and/or register their sales representatives. Certain state laws also regulate manufacturers’ use of prescriber-identifiable data. These laws may affect Cara’s sales, marketing and other promotional activities by imposing administrative and compliance burdens. In addition, given the lack of clarity with respect to these laws and their implementation, Cara’s reporting actions could be subject to the penalty provisions of the pertinent state and federal authorities.

If Cara’s operations are found to be in violation of any of the health regulatory laws described above or any other laws that apply to Cara, Cara may be subject to penalties, including significant criminal, civil and administrative penalties, damages, fines, imprisonment, exclusion from participation in government healthcare programs, contractual damages, reputational harm, diminished profits and future earnings, additional reporting requirements and/or oversight if Cara becomes subject to a corporate integrity agreement or similar agreement to resolve allegations of non-compliance with these laws, and the curtailment or restructuring of its operations, any of which could adversely affect its ability to operate its business and its results of operations. To the extent that any of Cara’s products are sold in a foreign country, Cara may be subject to similar foreign laws and regulations, which may include, for instance, applicable post-marketing requirements, including safety surveillance, anti-fraud and abuse laws, and implementation of corporate compliance programs and reporting of payments or transfers of value to healthcare professionals.

#### Coverage and Reimbursement Generally

The commercial success of KORSUVA injection and Cara’s ability to commercialize any approved product candidate successfully will depend in part on the extent to which governmental payer programs at the federal and state levels, including Medicare and Medicaid, private health insurers and other third-party payers provide coverage for and establish adequate reimbursement levels. In the United States, private health insurers and other third-party payers often provide reimbursement for products and services based on the level at which the government provides reimbursement through the Medicare or Medicaid programs for such products and services.

Patients who are prescribed treatments for their conditions and providers performing the prescribed services generally rely on third-party payers to reimburse all or part of the associated healthcare costs. Sales of KORSUVA injection will therefore depend substantially, both domestically and abroad, on the extent to which the costs of Cara’s products will be paid by health maintenance, managed care, pharmacy benefit and similar healthcare management organizations, or reimbursed by government health administration authorities, such as Medicare and Medicaid, private health insurers and other third-party payers. Further, assuming coverage is approved, the resulting reimbursement payment rates might not be adequate. KORSUVA injection is expected to be designated as a component of the government’s bundled reimbursement for ESRD treatment.

Cara’s U.S. commercial partner, CSL Vifor, submitted the payment reimbursement application for TDAPA and HCPCS to CMS in September 2021. In December 2021, CMS granted TDAPA to KORSUVA injection in the anti-pruritic functional category. TDAPA applied to KORSUVA injection beginning April 1, 2022 for two years. On October 27, 2023, CMS published the final CY 2024 rule, which finalized the post-TDAPA add-on payment as proposed in the draft CY 2024 rule. Under the final rule, TDAPA drugs in existing functional categories will receive a post-TDAPA add-on payment set at 65 percent of the total trailing 12-months expenditure levels for the given renal dialysis drug or biological product. The post-TDAPA add-on payment will be applied to all ESRD PPS payments and paid for 3 years, adjusted annually. The add-on payments for KORSUVA injection commenced on April 1, 2024.

Third-party payers are increasingly imposing additional requirements and restrictions on coverage and limiting reimbursement levels for medical products, including pharmaceuticals. For example, federal and state governments reimburse covered prescription drugs at varying rates generally below average wholesale price. These restrictions and limitations influence the purchase of healthcare services and products. Third-party payers may limit coverage to specific drug products on an approved list, or formulary, which might not include all of the FDA-approved drug products for a particular indication. Additionally, third-party payers are increasingly challenging the price and examining the medical necessity and cost-effectiveness of medical products and services, in addition to their safety and efficacy. Therefore, Cara may need to conduct expensive pharmacoeconomic studies in order to demonstrate the medical necessity and cost-effectiveness of its products, in addition to the costs required to obtain the FDA approvals. KORSUVA injection may not be considered medically necessary or cost-effective. Moreover, a payer’s decision to provide coverage for a drug product does not imply that an adequate reimbursement rate will be approved, and one payer’s determination to provide coverage for a product does not assure that other payers will also provide coverage. Adequate third-party reimbursement may not be available to enable Cara to maintain price levels sufficient to realize an appropriate return on its investment in drug development. Even if favorable coverage and reimbursement status is attained for one or more products for which Cara receives regulatory approval, less favorable coverage policies and reimbursement rates may be implemented in the future. Legislative proposals to reform healthcare or reduce costs under government insurance programs may result in lower reimbursement for Cara’s products and product candidates or exclusion of its products and product candidates from coverage. The cost containment measures that healthcare payers and providers are instituting and any healthcare reform could significantly reduce Cara’s revenues from the sale of KORSUVA injection.

#### Healthcare Regulatory Developments

In the United States and some foreign jurisdictions, the legislative landscape with respect to healthcare continues to evolve. There have been a number of legislative and regulatory changes to the healthcare system that could affect Cara’s ability to sell its products profitably. Among policy makers and payers in the United States and elsewhere, there is significant interest in promoting changes in healthcare systems with the stated goals of containing healthcare costs, improving quality and expanding access. In the United States, the pharmaceutical industry has been a particular focus of these efforts and has been significantly affected by major legislative initiatives.

For example, the Health Care Reform Law was passed in March 2010 and includes provisions that have substantially changed healthcare financing by both governmental and private insurers.

There have been executive, judicial and Congressional challenges and amendments to certain aspects of the Health Care Reform Law. For example, on August 16, 2022, the Inflation Reduction Act of 2022, or IRA, was signed into law, which among other things, extends enhanced subsidies for individuals purchasing health insurance coverage in Health Care Reform Law marketplaces through plan year 2025. The IRA also eliminates the “donut hole” under the Medicare Part D program beginning in 2025 by significantly lowering the beneficiary maximum out-of-pocket cost and creating a new manufacturer discount program. It is possible that the Health Care Reform Law will be subject to judicial or Congressional challenges in the future. It is unclear how such challenges and the healthcare reform measures of the Trump administration will impact the Health Care Reform Law and Cara’s business.

In addition, other legislative changes have been proposed and adopted since the Health Care Reform Law was enacted. In August 2011, President Obama signed into law the Budget Control Act of 2011, as amended, which, among other things, created the Joint Select Committee on Deficit Reduction to recommend proposals in spending reductions to

Congress. The Joint Select Committee on Deficit Reduction did not achieve its targeted deficit reduction of at least $1.2 trillion for the years 2013 through 2021, triggering the legislation’s automatic reductions to several government programs. These reductions include aggregate reductions to Medicare payments to providers of up to 2% per fiscal year starting in 2013 and, due to subsequent legislative amendments, will remain in effect until 2032, unless additional Congressional action is taken. Additionally, on March 11, 2021, President Biden signed the American Rescue Plan Act of 2021 into law, which eliminates the statutory Medicaid drug rebate cap, currently set at 100% of a drug’s average manufacturer price, for single source and innovator multiple source drugs, beginning January 1, 2024.

In the United States, the EU, and other potentially significant markets for Cara’s product candidates, government authorities and third-party payers are increasingly attempting to limit or regulate the price of medical products and services, particularly for new and innovative products and therapies, which often has resulted in average selling prices lower than they would otherwise be. Further, the increased emphasis on managed healthcare in the United States and on country and regional pricing and reimbursement controls in the EU will put additional pressure on product pricing, reimbursement and utilization, which may adversely affect Cara’s future product sales and results of operations. For example, there have been several recent U.S. Presidential executive orders, Congressional inquiries and proposed and enacted federal and state legislation designed to, among other things, bring more transparency to drug pricing, review the relationship between pricing and manufacturer patient programs, reduce the cost of drugs under Medicare, and reform government program reimbursement methodologies for drugs. In addition, the IRA, among other things, (1) directs the U.S. Department of Health and Human Services, or HHS, to negotiate the price of certain high-expenditure, single-source drugs covered under Medicare that have been on the market for at least seven years, or the Medicare Drug Price Negotiation Program, and (2) imposes rebates under Medicare Part B and Medicare Part D to penalize price increases that outpace inflation. These provisions take effect progressively starting in fiscal year 2023. On August 29, 2023, HHS announced the list of the first ten drugs that will be subject to price negotiations, although the Medicare Drug Price Negotiation Program is currently subject to legal challenges. On January 17, 2025, HHS selected fifteen additional products covered under Part D for price negotiation in 2025. Each year thereafter more Part B and Part D products will become subject to the Medicare Drug Price Negotiation Program. Further, on December 7, 2023, an initiative to control the price of prescription drugs through the use of march-in rights under the Bayh-Dole Act was announced. On December 8, 2023, the National Institute of Standards and Technology published for comment a Draft Interagency Guidance Framework for Considering the Exercise of March-In Rights which for the first time includes the price of a product as one factor an agency can use when deciding to exercise march-in rights. While march-in rights have not previously been exercised, it is uncertain if that will continue under the new framework. At the state level, legislatures have increasingly passed legislation and implemented regulations designed to control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, to encourage importation from other countries and bulk purchasing. For example, on January 5, 2024, the FDA approved Florida’s Section 804 Importation Program (SIP) proposal to import certain drugs from Canada for specific state healthcare programs. It is unclear how this program will be implemented, including which drugs will be chosen, and whether it will be subject to legal challenges in the United States or Canada. Other states have also submitted SIP proposals that are pending review by the FDA. Any such approved importation plans, when implemented, may result in lower drug prices for products covered by those programs. These pressures can arise from rules and practices of managed care groups, judicial decisions and laws and regulations related to Medicare, Medicaid and healthcare reform, pharmaceutical coverage and reimbursement policies and pricing in general.

These and other healthcare reform initiatives may result in additional reductions in Medicare payments and other healthcare funding, which could have a material adverse effect on Cara’s financial operations. Cara expects that additional state and federal healthcare reform measures will be adopted in the future, particularly in light of the recent U.S. Presidential and Congressional elections, any of which could limit the amounts that federal and state governments will pay for healthcare products and services, which could further limit the prices Cara is able to charge, or the amounts of reimbursement available, for KORSUVA injection or any other product candidate that may be approved.

### Foreign Regulation

In order to market any product outside of the United States, Cara would need to comply with numerous and varying regulatory requirements of other countries regarding safety and efficacy. Individual countries govern, among other things, clinical trials, marketing authorization, commercial sales and distribution of Cara’s products. For example, in the EU, Cara must obtain authorization of a clinical trial application, or CTA, through the Clinical Trials Registration process in each member state in which Cara intends to conduct a clinical trial. Whether or not Cara obtains FDA marketing approval for a product, Cara would need to obtain the necessary approvals by the comparable regulatory authorities of foreign countries before Cara can commence marketing of the product in those countries. The approval process varies from country to country and can involve additional product testing and varying administrative review periods. The time required to obtain approval in other countries might differ from and be longer than that required to obtain FDA approval. Regulatory approval in one country does not ensure regulatory approval in another, but a failure or delay in obtaining regulatory approval in one country may negatively impact the regulatory outcome in others.

### Employees and Human Capital

In connection with its decision to discontinue the clinical program in NP in June 2024 and the approval of a streamlined operating plan exploring strategic alternatives, Cara’s Board of Directors approved a reduction in the Cara workforce, which was substantially completed by June 30, 2024. As of March 6, 2025, Cara had ten employees, all of whom are located in the United States. None of Cara’s employees are represented by a labor union or covered by a collective bargaining agreement. Cara considers its relationship with its employees to be good.

Cara’s human capital resources objectives include, as applicable, retaining and incentivizing its existing employees, advisors, and consultants. The principal purposes of Cara’s equity and cash incentive plans are to retain and reward personnel through stock-based and cash-based compensation awards, in order to increase stockholder value and the success of Cara by motivating such individuals to perform to the best of their abilities and achieve Cara’s objectives.

### Website Access to Reports

Cara’s website is *www.caratherapeutics.com*. Cara is subject to the informational requirements of the Exchange Act and file or furnish reports, including its Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to reports filed pursuant to Sections 13(a) and 15(d) of the Exchange Act, proxy statements and other information with the SEC. Cara makes copies of these reports and other information available free of charge through its website (under the heading “SEC Filings”) as soon as reasonably practicable after Cara files or furnishes them with the SEC. The SEC maintains a website that contains reports, proxy and information statements and other information regarding issuers that file electronically with the SEC at *www.sec.gov*. The information contained on the websites referenced herein is not incorporated by reference into this Annual Report on Form 10-K, and the website addresses are provided only as inactive textual references.

## Risk factors

As filed, 241,757 characters.

*In addition to other information contained in this Annual Report on Form 10-K, the following risks should be considered in evaluating our business and future prospects and an investment in our common stock. The risks and uncertainties described below are not the only ones we face. If any of the following risks and uncertainties develops into actual events, our business, financial condition, results of operations and cash flows could be materially adversely affected. In that case, the price of our common stock could decline and you may lose all or part of your investment.*

### Risks Related to the Merger with Tvardi

***The Merger may not be completed on the terms or timeline currently contemplated, or at all.***

The consummation of the Merger is subject to numerous conditions, including (1) the effectiveness of the registration statement on Form S-4 filed in connection with the Merger, or the Registration Statement, (2) the approval by Cara’s stockholders of the required stockholder proposals set forth in the proxy statement/prospectus included in the Registration Statement, (3) the requisite approval by Tvardi’s stockholders, and (4) other customary closing conditions and there can be no assurance that the Merger will be consummated.

If the Merger is not completed for any reason, the price of Cara’s common stock may decline to the extent that the market price of Cara’s common stock reflects or previously reflected positive market assumptions that the Merger would be completed and the related benefits would be realized. In addition, Cara and Tvardi have expended and will continue to expend significant management time and resources and have incurred and will continue to incur significant expenses due to legal, advisory, printing and financial services fees related to the Merger. These expenses must be paid regardless of whether the Merger is consummated.

***The exchange ratio will not be adjusted based on the market price of Cara common stock, so the consideration at the closing of the Merger may have a greater or lesser value than at the time the Merger Agreement was signed.***

Each outstanding share of Tvardi common stock (after giving effect to the conversion of preferred stock and excluding shares held by stockholders who have exercised and perfected appraisal rights and excluding shares held as treasury stock by Cara or held or owned by Cara, Merger Sub or any subsidiary of Cara or Tvardi), will be converted into the right to receive a number of shares of Cara common stock based on an exchange ratio. The exchange ratio will not change based on changes in the trading price of Cara common stock. Therefore, if before the completion of the Merger, the market price of Cara common stock increases from the market price on the date of the Merger Agreement, Tvardi stockholders could then receive merger consideration with substantially higher value for their shares of Tvardi common stock than the parties had negotiated when they established the Exchange Ratio. The Merger Agreement does not include a price-based termination right. Immediately following the Merger, the pre-Merger equity holders of Cara are expected to hold approximately 15.25% of the shares of Cara common stock, the pre-Merger equity holders of Tvardi are expected to hold approximately 72.21% of the shares of Cara common stock, and the holders of the Convertible Notes are expected to hold approximately 12.54% of the shares of Cara common stock, in each case, on a fully diluted basis (subject to further adjustment as further described below), subject to certain adjustments, including based upon Cara net cash at the closing of the Merger. The calculation of Cara’s net cash at closing of the Merger includes, among other things, a credit or reduction for cash proceeds that Cara receives or pays from the Asset Disposition. The Net Cash Condition means that Cara’s net cash must be no less than $18.0 million in order for Tvardi to be required to complete the Merger.

***Cara’s net cash may be less than $22.875 million at the closing of the Merger, which would result in Cara’s stockholders owning a smaller percentage of the combined company and, if Cara’s net cash is less than $18.0 million as of June 30, 2025, could even result in the termination of the Merger Agreement.***

For purposes of the Merger Agreement, net cash is subject to certain reductions, including, without limitation, for payments made in connection with the sale, transfer, license, assignment or other divestiture of its intellectual property and other assets and technology in existence on the date of the Merger Agreement on or about the anticipated closing of the Merger, accounts payable, accrued expenses (except those related to the Merger), current liabilities payable in cash, unpaid expenses related to the Merger and certain other unpaid obligations. In the event the amount of Cara’s cash is smaller or such reductions are greater than anticipated, Cara stockholders could hold a significantly smaller portion of the combined company.

***Failure to complete the Merger may result in Cara or Tvardi paying a termination fee to the other party and could harm the common stock price of Cara.***

If the Merger is not completed, each of Cara and Tvardi is subject to the following risks:

- upon termination of the Merger Agreement, Cara may be required to pay Tvardi a termination fee of $2.25 million or up to $750,000 in expense reimbursements; or Tvardi may be required to pay Cara a termination fee of $2.25 million or up to $750,000 in expense reimbursements;
- the parties have incurred, and will continue to incur, significant expenses related to the Merger, such as legal, financial advisor, and accounting fees, which must be paid even if the Merger is not completed;
- the price of Cara’s common stock may decline and remain volatile; or
- Cara may be forced to cease its operations, dissolve and liquidate its assets.

In addition, if the Merger Agreement is terminated and the Cara Board or Tvardi Board determines to seek another business combination, there can be no assurance that either Cara or Tvardi will be able to find a partner willing to provide equivalent or more attractive consideration than the consideration to be provided by each party in the Merger or any partner at all.

***If the conditions to the closing of the Merger are not met, the Merger may not occur.***

Even if the required stockholder proposals set forth in the proxy statement/prospectus included in the Registration Statement are approved by the stockholders of Cara, specified conditions must be satisfied or waived to complete the Merger. Cara and Tvardi cannot assure you that all of the conditions will be satisfied or waived. If the conditions are not satisfied or waived, the Merger may not occur or will be delayed, and Cara and Tvardi each may lose some or all the intended benefits of the Merger.

***The Merger may be completed even though material adverse changes may result from the announcement of the Merger, industry-wide changes and/or other causes.***

In general, either Cara or Tvardi can refuse to complete the Merger if there is a Tvardi Material Adverse Effect (as defined in the Merger Agreement) or a Cara Material Adverse Effect (as defined in the Merger Agreement), as applicable, between December 17, 2024, the date of the Merger Agreement, and the closing of the Merger. However, certain types of changes do not permit either party to refuse to complete the Merger, even if such change could be said to have a material adverse effect on Cara or Tvardi, including:

- general business, political or economic conditions generally affecting the industry in which Tvardi or Cara operate;
- acts of war, the outbreak or escalation of armed hostilities, acts of terrorism, earthquakes, wildfires, hurricanes or other natural disasters, health emergencies, including pandemics (including COVID-19 and any evolutions or mutations thereof) and related or associated epidemics, disease outbreaks or quarantine restrictions;
- changes in financial, banking or securities markets;
- any change in the stock price or trading volume of Cara common stock (it being understood, however, that any effect causing or contributing to any change in stock price or trading volume of Cara common stock may be taken into account in determining whether a material adverse effect with respect to Cara has occurred, unless such effects are otherwise excepted from the definition of Cara material adverse effect);
- any failure by Cara to meet internal or analysts’ expectations or projections or the results of operations of Cara (it being understood, however, that any effect causing or contributing to the failure of Cara to meet internal or analysts’ expectations or projections or the results of operations of Cara may be taken into account in determining whether a material adverse effect with respect to Cara has occurred, unless such effects are otherwise excepted from the definition of Cara material adverse effect);
- any change in, or any compliance with or action taken for the purpose of complying with, any applicable law or GAAP (or interpretations of any applicable law or GAAP);
- the announcement of the Merger Agreement or the pendency of the Merger and other transactions and actions contemplated by the Merger Agreement (collectively, the Contemplated Transactions); or
- the taking of any action required to be taken by the Merger Agreement.

If a material adverse change occurs with respect to either party or both parties and Cara and Tvardi still complete the Merger, the stock price of the combined company following the closing of the Merger may suffer and may reduce the value of the Merger to the stockholders of Cara, Tvardi or both.

***Some executive officers and directors of Cara have interests in the Merger that are different from the respective stockholders of Cara and that may influence them to support or approve the Merger without regard to the interests of the stockholders of Cara.***

Some officers and directors of Cara are parties to arrangements that provide them with interests in the Merger that are different from the stockholders of Cara, including some or all of service as an officer or director of the combined company following the closing of the Merger, severance and retention benefits, the acceleration of equity award vesting and continued indemnification.

***The market price of Cara common stock following the Merger may decline as a result of the Merger.***

The market price of Cara common stock may decline as a result of the Merger for a number of reasons, including if:

- investors react negatively to the prospects of the combined company’s business and prospects following the closing of the Merger;
- the effect of the Merger on the combined company’s business and prospects following the closing of the Merger is not consistent with the expectations of financial or industry analysts; or
- the combined company does not achieve the perceived benefits of the Merger as rapidly or to the extent anticipated by stockholders or financial or industry analysts, or at all.

***Cara and Tvardi equity holders will have a materially reduced ownership and voting interest in, and will exercise less influence over the management of, the combined company following the closing of the Merger as compared to their current ownership and voting interest in the respective companies.***

Immediately following the Merger, the pre-Merger equity holders of Cara are expected to hold approximately 15.25% of the outstanding shares of Cara common stock, the pre-Merger equity holders of Tvardi are expected to hold approximately 72.21% of the outstanding shares of Cara common stock, and the holders of the Convertible Notes are expected to hold approximately 12.54% of the shares of Cara common stock, in each case, on a fully diluted basis (subject to further adjustment as further described below), subject to certain adjustments, including based upon Cara’s net cash at the closing of the Merger. The calculation of Cara’s net cash at the closing of the Merger includes, among other things, a credit or reduction for cash proceeds that Cara receives or pays from the Asset Disposition. The Net Cash Condition means that Cara’s net cash must be no less than $18.0 million in order for Tvardi to be required to complete the Merger.

Following the Closing, Sujal Shah will serve as Chairman and Imran Alibhai will serve as the Chief Executive Officer of Cara as the combined company. Additionally, following the closing, the combined company board of directors will consist of seven directors, and will be comprised of five members designated by Tvardi (Sujal Shah, Michael Wyzga, Wallace Hall, Shaheen Wirk and Imran Alibhai), one member to be designated by Cara prior to Closing and one vacancy, to be designated by Tvardi if prior to the closing of the Merger or by the combined company if following the consummation of the Merger.

***During the pendency of the Merger Agreement, Cara and Tvardi may not be able to enter into a business combination with another party at a favorable price because of restrictions in the Merger Agreement, which could adversely affect their respective businesses.***

Covenants in the Merger Agreement impede the ability of Cara and Tvardi to make acquisitions, subject to specified exceptions relating to fiduciary duties, or complete other mergers, sales of assets or other business combinations pending completion of the Merger. As a result, if the Merger is not completed, the parties may be at a disadvantage to their competitors during that period. In addition, while the Merger Agreement is in effect, each party is generally prohibited from soliciting, initiating, encouraging or entering into specified extraordinary transactions, such as a merger, sale of assets or other business combination, with any third party, subject to specified exceptions, even if any such transaction could be favorable to such party’s stockholders.

***Certain provisions of the Merger Agreement may discourage third parties from submitting competing proposals, including proposals that may be superior to the arrangements contemplated by the Merger Agreement.***

The terms of the Merger Agreement prohibit each of Cara and Tvardi from soliciting competing proposals or cooperating with persons making unsolicited takeover proposals, except in limited circumstances for Cara when the Cara Board determines in good faith, after consultation with its outside financial advisor and outside legal counsel, that an unsolicited competing proposal constitutes, or is reasonably likely to result in, a superior competing proposal and, after consultation with its outside legal counsel, that failure to take such action is reasonably likely to be inconsistent with the fiduciary duties of the Cara Board. Even in such circumstances, while the Cara Board may change its recommendation to Cara stockholders, Cara will remain obligated to hold a stockholder vote on the Required Cara Closing Stockholder Matters and may not terminate the Merger Agreement in order to enter into an agreement with respect to a Superior Offer. In addition, if Cara or Tvardi terminate the Merger Agreement under specified circumstances, including terminating because of a decision of the Cara Board to recommend a superior competing proposal, Cara may be required to pay Tvardi a termination fee of $2.25 million and/or up to $750,000 in expense reimbursements or Tvardi may be required to pay Cara a termination fee of $2.25 million, and/or up to $750,000 in expense reimbursements. This termination fee may discourage third parties from submitting competing proposals to Cara or its stockholders and may cause the Cara Board or the Tvardi Board, as the case may be, to be less inclined to recommend a competing proposal.

***Because the lack of a public market for Tvardi’s common stock makes it difficult to evaluate the fairness of the Merger, the stockholders of Tvardi may receive consideration in the Merger that is less than the fair market value of Tvardi’s common stock or Cara may pay more than the fair market value of Tvardi’s common stock.***

The outstanding common stock of Tvardi is privately held and is not traded in any public market. The lack of a public market makes it extremely difficult to determine the fair market value of Tvardi’s common stock. Because the percentage of Cara equity to be issued to Tvardi stockholders was determined based on negotiations between the parties, it is possible that the value of the Cara common stock to be received by Tvardi stockholders will be less than the fair market value of Tvardi’s common stock, or Cara may pay more than the aggregate fair market value for Tvardi’s common stock.

***The Piper Sandler Opinion delivered by Piper Sandler to the Cara Board prior to the entry into the Merger Agreement does not reflect changes in circumstances that may occur after the date thereof.***

The Cara Board has not obtained an updated opinion either as of the date of the Annual Report on Form 10-K or as of any other date subsequent to the date of the Piper Sandler Opinion from Piper Sandler, Cara’s financial advisor. Changes in circumstances, including without limitation the operations and prospects of Cara or Tvardi, stock prices, general market and economic conditions and other factors, some or all of which may be beyond the control of Cara and Tvardi, are not reflected in the Piper Sandler Opinion. The Piper Sandler Opinion does not speak as of any date other than the date thereof.

***The combined company may become involved in securities litigation that could divert management’s attention and harm the combined company’s business and insurance coverage may not be sufficient to cover all costs and damages.***

In the past, securities class action or stockholder derivative litigation often follows certain significant business transactions, such as the sale of a business division or announcement of a merger. The combined company may become involved in this type of litigation in the future in connection with the Merger and the other Contemplated Transactions. As of the date of this Annual Report on Form 10-K, Cara has received five demand letters from purported stockholders relating to the Merger and the other Contemplated Transactions and the disclosures contained in the proxy statement/prospectus related to the Contemplated Transactions. Responding to these demands and litigation often is expensive and diverts management’s attention and resources, which could adversely affect the combined company’s business.

***Cara or Tvardi may waive one or more of the conditions to the Merger without recirculation of the proxy statement/prospectus or resoliciting stockholder approval.***

Conditions to Cara’s or Tvardi’s obligations to complete the Merger may be waived, in whole or in part, to the extent permitted by law, in certain circumstances unilaterally or by agreement of Cara and Tvardi. In the event of a waiver of a condition, the Cara Board will evaluate the materiality of any such waiver to determine whether amendment of the proxy statement/prospectus and resolicitation of stockholder approval is necessary.

In the event that the Cara Board, in its own reasonable discretion, determines any such waiver is not significant enough to require recirculation of this proxy statement/prospectus and re-solicitation of its stockholders, it will have the discretion to complete the Merger without seeking further stockholder approval, which decision may have a material adverse effect on the Cara stockholders. For example, if Cara and Tvardi agree to waive the requirement that the shares of Cara common stock to be issued in the Merger have been approved for listing (subject to official notice of issuance) on Nasdaq as of the closing of the Merger, and their respective boards of directors elect to proceed with the closing of the Merger, Nasdaq may notify the combined company of its determination to delist the company’s securities based upon the failure to satisfy the initial inclusion criteria in the Nasdaq application. The combined company may appeal the determination to a hearings panel but such appeal will not stay the suspension and delisting action and Nasdaq may notify the combined company that its common stock will be immediately suspended from trading and delisted.

In addition, in order to meet the initial listing requirements of Nasdaq, Cara may release Tvardi stockholders from their Lock-Up Agreements and waive the requirement that such Lock-Up Agreements be in full force and effect immediately following the Effective Time. Such release would increase the number of shares that may be sold in the public market immediately after the Merger and any such sales could cause the combined company’s stock price to decline.

***Transfers of the combined company’s securities utilizing Rule 144 of the Securities Act may be limited.***

A significant portion of the combined company’s securities will be restricted from immediate resale. Holders should be aware that transfers of Cara’s securities pursuant to Rule 144 under the Securities Act (Rule 144) may be limited as Rule 144 is not available, subject to certain exceptions, for the resale of securities initially issued by shell companies (other than business combination related shell companies) or issuers that have previously been a shell company. Cara’s winddown of its historical operations, the suspension of development activities and the proposed Merger will make Cara subject to the SEC requirements applicable to reporting shell company business combinations. Cara anticipates that following the consummation of the proposed transaction, the combined company will no longer be a shell company. As a result, Cara anticipates that holders will not be able to sell their restricted combined company securities pursuant to Rule 144 without registration until one year after the combined company files the Current Report on Form 8-K following the closing that includes the required Form 10 type information that reflects that the combined company is no longer a shell company.

***Cara’s winddown of its historical operations, the sale of assets, the suspension of development activities and the proposed Merger, resulting in the conversion of Tvardi into a public company, will make Cara subject to the SEC requirements applicable to reporting shell company business combinations. As a result, the combined company will be subject to more stringent reporting requirements, offering limitations and resale restrictions.***

According to SEC guidance, the requirements applicable to reporting shell company business combinations apply to any company that sells or otherwise disposes of its historical assets or operations in connection with or as part of a plan to combine with a non-shell private company in order to convert the private company into a public one. Cara has suspended its development activities and, as such, Cara’s plan to merge with Tvardi, resulting in the conversion of Tvardi into a public company, will be subject to the SEC requirements applicable to reporting shell company business combinations, which are as follows:

- the combined company will need to file a Current Report on Form 8-K to report the Form 10 type information (Super 8-K) after the closing of the Merger reflecting its status as an entity that is not a shell company;
- the combined company will not be eligible to use a Form S-3 until 12 full calendar months after the closing of the Merger;
- the combined company will need to wait at least 60 calendar days after the filing of the Super 8-K to file a Form S-8 for any equity plans or awards, such as the 2025 Equity Plan and the 2025 Employee Stock Purchase Plan;
- the combined company will be an “ineligible issuer” for three years following the closing of the Merger, which will prevent the combined company from (i) incorporating by reference in its Form S-1 filings, (ii) using a free writing prospectus or (iii) taking advantage of the well-known seasoned issuer (WKSI) status despite its public float;
- investors who (i) were affiliates of Tvardi at the time the Merger was submitted for the vote or consent of Tvardi’s stockholders, (ii) receive securities of the combined company in the Merger and (iii) publicly offer or sell such securities will be deemed to be engaged in a distribution of such securities, and therefore would be underwriters with respect to resales of those securities, and accordingly such securities may not be included in any resale shelf registration statement unless such securities are sold only in a fixed price offering in which such investors are named as underwriters in the prospectus; and
- Rule 144(i)(2) will limit the ability of holders of restricted securities and any affiliates of the public company to publicly resell Rule 145(c) securities per Rule 145(d), as well as any other “restricted” or “control” securities of the combined company per Rule 144, until one year after the Form 10 information is filed with the SEC. Non-affiliate Cara Stockholders prior the Mergers will not be subject to such restrictions on public resales of their shares.

The foregoing SEC requirements will increase the combined company’s time and cost of raising capital, offering stock under equity plans, and complying with securities laws. Furthermore, such requirements will add burdensome restrictions on the resale of the combined company common stock by affiliates of Tvardi and any holders of “restricted” or “control” securities of the combined company.

***Nasdaq may delist the combined company’s securities from trading on its exchange, which could limit investors’ ability to make transactions in its securities and subject the combined company to additional trading restrictions.***

Currently, Cara’s common stock is publicly traded on The Nasdaq Capital Market. In connection with the proposed Merger, Tvardi will file an initial listing application with Nasdaq pursuant to Nasdaq’s “reverse merger” rules. The combined company will be required to meet the initial listing requirements for its securities to be listed on Nasdaq.

If Cara and Tvardi fail to meet the Nasdaq listing requirements and their respective boards choose to close the merger without Nasdaq’s approval, then Nasdaq may notify the combined company of its determination to delist the company’s securities based upon the failure to satisfy the criteria in the Nasdaq application. For more information, refer to the section titled “*Risk Factors Related to the Merger—Cara or Tvardi may waive one or more of the conditions to the Merger without recirculation of the proxy statement/prospectus or resoliciting stockholder approval”.*

We cannot assure you that the combined company will be able to meet those initial listing requirements. Even if the combined company’s securities are so listed, the combined company may be unable to maintain the listing of its securities in the future. In order to continue listing its securities on Nasdaq following the proposed Merger, the combined company will be required to maintain certain financial, distribution and stock price levels. If Nasdaq delists the combined company’s securities from trading on its exchange at closing of the Merger (or thereafter) and the combined company is not able to list its securities on another national securities exchange or regain compliance with Nasdaq, the combined company’s securities could be quoted on an over-the-counter market. If this were to occur, the combined company could face significant material adverse consequences, including:

- a limited availability of market quotations for its securities;
- reduced liquidity for its securities;
- a determination that the combined company’s common stock is a “penny stock” which will require brokers trading in the combined company’s common stock to adhere to more stringent rules and possibly result in a reduced level of trading activity in the secondary trading market for our securities;
- a limited amount of news and analyst coverage; and
- a decreased ability to issue additional securities or obtain additional financing in the future.

The National Securities Markets Improvement Act of 1996, which is a federal statute, prevents or preempts states from regulating the sale of certain securities, which are referred to as “covered securities.” Since Cara’s common stock is listed on Nasdaq, they are covered securities. Although states are preempted from regulating the sale of covered securities, the federal statute does allow states to investigate companies if there is a suspicion of fraud, and, if there is a finding of fraudulent activity, then states can regulate or bar the sale of covered securities in a particular case. If Cara was no longer listed on Nasdaq, its securities would not be covered securities and it would be subject to regulation in each state in which it offers its securities, including in connection with the Merger.

***The financial projections considered by the Cara Board in evaluating the Merger and used by Piper Sandler at the direction of Cara in rendering its Opinion and performing its related financial analyses, reflect numerous variables, estimates and assumptions and are inherently uncertain.***

In connection with the Cara Board’s evaluation of the Merger, Cara’s management prepared certain short-term unaudited prospective internal financial projections with respect to Cara that were provided to the Cara Board in connection with its evaluation of the Merger and to Piper Sandler in connection with its financial analysis and Opinion. The financial projections reflect numerous variables, estimates, forecasts and assumptions and these variables, estimates, forecasts and assumptions may prove to be wrong.

### Risks Related to Cara’s Strategic Alternative Process and Potential Strategic Transaction

***Failure to complete, or delays in completing, the Merger with Tvardi could materially and adversely affect Cara’s results of operations, business, financial results and/or stock price.***

In June 2024, Cara announced that it was undertaking a comprehensive exploration of strategic alternatives focused on maximizing stockholder value. After a comprehensive review of strategic alternatives, including identifying and reviewing potential candidates for the merger, on December 17, 2024, Cara entered into the Merger Agreement. The closing is subject to approval by the Cara stockholders and Tvardi stockholders as well as other customary closing conditions, including the effectiveness of a registration statement filed with the SEC in connection with the transaction. If the Merger is completed, the business of Tvardi will continue as the business of the combined company. Any failure to satisfy a required condition to closing may prevent, delay or otherwise materially and adversely affect the completion of the transaction, which could materially and adversely affect Cara’s results of operations, business, financial results and/or stock price. Cara cannot predict with certainty whether or when any of the required closing conditions will be satisfied or if another uncertainty may arise and cannot assure you that the Merger will be successfully consummated or that Cara will be able to successfully consummate the proposed merger as currently contemplated under the Merger Agreement or at all.

Cara’s efforts to complete the Merger could cause substantial disruptions in, and create uncertainty surrounding, Cara’s business, which may materially adversely affect Cara’s results of operations and Cara’s business. Uncertainty as to whether the Merger will be completed may affect Cara’s ability to retain and motivate existing employees. Employee retention may be particularly challenging while the transaction is pending because employees may experience uncertainty about their roles during and following the transaction. A substantial amount of Cara management’s and employees’ attention is being directed toward the completion of the transaction and thus is being diverted from Cara’s day-to-day operations. Uncertainty as to Cara’s future could adversely affect Cara’s business and Cara’s relationship with collaborators, suppliers, vendors, regulators and other business partners. For example, vendors, collaborators and other counterparties may defer decisions about working with Cara or seek to change existing business relationships with Cara. Changes to, or termination of, existing business relationships could adversely affect Cara’s results of operations and financial condition, as well as the market price of Cara’s common stock. The adverse effects of the pendency of the transaction could be exacerbated by any delays in completion of the transaction or termination of the Merger Agreement.

Risks related to the failure to consummate, or delay in consummating, the Merger with Tvardi include, but are not limited to, the following:

- Cara may not realize any or all of the potential benefits of the Merger, which could have a negative effect on Cara’s results of operations, business or stock price;
- under some circumstances, Cara may be required to pay a termination fee to Tvardi of $2.25 million;
- if the Merger Agreement is terminated by Cara or Tvardi due to Cara stockholders voting on and failing to approve certain proposals, Cara will be required to reimburse Tvardi for merger-related expenses up to $750,000. The expense reimbursement, to the extent paid, will be credited against any termination fee payable by Cara in the transaction;
- Cara would remain liable for significant transaction costs, including legal, accounting, financial advisory and other costs relating to the Merger regardless of whether the Merger is consummated;
- the trading price of Cara common stock may decline to the extent that the current market price for Cara common stock reflects a market assumption that the Merger will be completed;
- the attention of Cara management and employees may have been diverted to the Merger rather than to Cara’s operations and the pursuit of other opportunities that could have been beneficial to Cara;
- Cara could be subject to litigation related to any failure to complete the Merger;
- Cara could potentially lose key personnel during the pendency of the Merger as employees and other service providers may experience uncertainty about their future roles with Cara following completion of the Merger; and
- under the Merger Agreement, Cara is subject to certain customary restrictions on the conduct of Cara’s business prior to completing the Merger, which restrictions could adversely affect Cara’s ability to conduct Cara’s business as Cara otherwise would have done if Cara was not subject to these restrictions.

The occurrence of any of these events individually or in combination could materially and adversely affect Cara’s results of operations, business, and Cara’s stock price.

### Cara cannot be sure if or when the Merger will be completed.

The consummation of the Merger is subject to the satisfaction or waiver of various conditions, including the authorization of the Merger by Cara stockholders and Tvardi stockholders. Cara cannot guarantee that the closing conditions set forth in the Merger Agreement will be satisfied. If Cara is unable to satisfy certain closing conditions or if other mutual closing conditions are not satisfied, Tvardi will not be obligated to complete the Merger.

Under certain circumstances, Cara would be required to pay Tvardi a termination fee of $2.25 million. Additionally, if the Merger Agreement is terminated by Cara or Tvardi due to Cara stockholders voting on and failing to approve certain proposals, Cara will be required to reimburse Tvardi for Merger-related expenses up to $750,000. The expense reimbursement, to the extent paid, will be credited against any termination fee payable by Cara in the transaction. Even if a termination fee is not payable in connection with a termination of the Merger Agreement, Cara will have incurred significant fees and expenses, which must be paid whether or not the Merger is completed. If the Merger is not completed, the Cara Board, in discharging its fiduciary obligations to Cara stockholders, would evaluate other strategic alternatives or financing options that may be available, which alternatives may not be as favorable to Cara stockholders as the Merger, including a liquidation and dissolution. Any future sale or Merger, financing or other transaction, including a liquidation or dissolution, may be subject to further stockholder approval. Cara may also be unable to find, evaluate or complete other strategic alternatives, which may have a materially adverse effect on Cara’s business. Until the Merger is completed, the Merger Agreement restricts Tvardi and Cara from taking specified actions without the consent of the other party, and requires Cara to operate in the ordinary course of business consistent with past practice. These restrictions may prevent Tvardi and Cara from making appropriate changes to Cara respective businesses or pursuing attractive business opportunities that may arise prior to the completion of the Merger. Further, if Cara’s net cash at closing is lower than anticipated, either because expenses exceed current estimates or due to delays prior to closing, then the pre-Merger Cara stockholders will own less of the combined company pursuant to the exchange ratio adjustment set forth in the Merger Agreement. Any delay in completing the Merger may materially and adversely affect the timing and benefits that are expected to be achieved from the Merger.

***If Cara does not successfully consummate the Merger or another strategic transaction, Cara’s Board may decide to pursue a dissolution and liquidation of Cara. In such an event, the amount of cash available for distribution to Cara’s stockholders will depend significantly on the timing of such liquidation as well as the amount of cash that will need to be reserved for commitments and contingent liabilities, as to which Cara can give you no assurance.***

There can be no assurance that the Merger will be completed. If the Merger is not completed, the Cara Board may decide to pursue a dissolution and liquidation of Cara. In such an event, the amount of cash available for distribution to Cara stockholders will depend heavily on the timing of such decision and, ultimately, such liquidation, since the amount of cash available for distribution continues to decrease as Cara continues to fund its operations while pursuing the Merger. In addition, if Cara’s Board were to approve and recommend, and Cara stockholders were to approve, a dissolution and liquidation, Cara would be required under Delaware corporate law to pay Cara’s outstanding obligations, as well as to make reasonable provision for contingent and unknown obligations, prior to making any distributions in liquidation to stockholders. Cara’s commitments and contingent liabilities may include obligations under Cara’s employment and related agreements with certain employees that provide for severance and other payments following a termination of employment occurring for various reasons, including a change in control of the company, litigation against Cara, and other various claims and legal actions arising in the ordinary course of business, and other unexpected and/or contingent liabilities, As a result of this requirement, a portion of Cara’s assets would need to be reserved pending the resolution of such obligations and the timing of any such resolution is uncertain.

In addition, Cara may be subject to litigation or other claims related to a dissolution and liquidation. If a dissolution and liquidation were pursued, Cara’s Board, in consultation with its advisors, would need to evaluate these matters and make a determination about a reasonable amount to reserve. Accordingly, holders of Cara’s common stock could lose all or a significant portion of their investment in the event of a liquidation, dissolution or winding up of the company. A liquidation would be a lengthy and uncertain process with no assurance of any value ever being returned to Cara stockholders.

***The value to stockholders in the event of a strategic transaction or dissolution may depend on the extent to which Cara will be able to successfully satisfy its existing contractual obligations to third parties and regulatory commitments on favorable terms, which may include the outcome of Cara’s negotiations to reduce or terminate such commitments.***

Cara is currently subject to certain contractual and regulatory obligations and commitments. In connection with its comprehensive exploration of strategic alternatives, Cara may seek to negotiate with third parties in order to reduce or eliminate such obligations and commitments. For example, on December 17, 2024, Cara and its subsidiary, Cara Royalty Sub, LLC (Cara Royalty Sub, and together with Cara, each, a Seller and together, the Sellers), entered into the APA with CSL Vifor, pursuant to which, at the consummation of the transaction, Sellers will sell to CSL Vifor and CSL Vifor will acquire from Sellers certain assets and rights for the development, manufacture and commercialization of difelikefalin as well as certain associated liabilities, or the Asset Disposition. Pursuant to the APA, in connection with the consummation of the Asset Disposition, CSL Vifor and HCR have entered into a letter agreement with Cara providing that CSL Vifor and HCR will, subject to the satisfaction of conditions to closing under the APA, enter into an amended and restated purchase agreement to amend and replace the Original HCR Agreement, by and among Cara Royalty Sub, HCRX Investments HoldCo, L.P. and HCR. Upon entering into the amended and restated purchase agreement, effective as of the closing of the Asset Disposition: (i) CSL Vifor will be obligated to make certain payments to HCR from and after the date thereof relating to certain revenue and/or royalties from difelikefalin, (ii) each of the Contribution Agreement, the License Agreement and the Pledge Agreement (each as defined in the Original HCR Agreement) shall be terminated, and (iii) Sellers shall have no further payment or other obligations to HCR under the Original HCR Agreement. Additionally, pursuant to the APA, at the consummation of the Asset Disposition, Cara has agreed to pay CSL Vifor $3.0 million to compensate CSL Vifor for the estimated incremental future expenses to be incurred by CSL Vifor as a result of the transfer of the assets to be acquired and the liabilities to be assumed by it in connection with the Asset Disposition.

The Asset Disposition is subject to certain conditions to closing, including either (i) the consummation of the Merger concurrently with the Asset Disposition or (ii) the receipt of the requisite stockholder approval needed to approve the Asset Disposition in the event that the Merger is terminated. The APA provides for certain termination rights of Sellers and CSL Vifor, including the right of either CSL Vifor or Cara to terminate the APA if (a) there is a permanent and nonappealable prohibition on the consummation of the Asset Disposition, (b) the Asset Disposition has not occurred by June 30, 2025 (which date shall be automatically extended in one-month increments until October 30, 2025 in certain instances if the Merger is not closed by June 30, 2025) or (c) if a meeting of Cara’s stockholders has been held for the stockholders to consider and vote upon the APA and the Asset Disposition and the stockholders have not voted in favor of adopting the APA and approving the Asset Disposition at such stockholder meeting. Either party may also terminate the APA if the other party breaches its obligations under the APA in certain instances and subject to customary cure protections. The APA contains representations, warranties, and covenants of the parties, including, among others, a covenant that requires (i) Sellers to operate their business in the ordinary course during the period between the execution of the APA and consummation of the Asset Disposition and to not engage in certain kinds of activities or transactions during such period (subject to either prior consent of CSL Vifor or customary limited exceptions), (ii) the parties to use their reasonable best efforts to complete certain transition steps in connection with the consummation of the Asset Disposition, and (iii) Sellers to use their commercially reasonable efforts to obtain any needed consents and provide any needed notices in connection with the Asset Disposition. Cara currently has license agreements with Maruishi Pharmaceutical Co., Ltd. (Maruishi), and Chong Kun Dang Pharmaceutical Corporation (CKDP), for the intravenous and oral formulations of difelikefalin, and manufacturing agreements with Polypeptide Laboratories S.A. (PPL) and Patheon UK Limited (Patheon) for the difelikefalin injection. Cara expects to assign these agreements with each of Maruishi, CKDP, PPL and Patheon to CSL Vifor in connection with the Merger and Asset Disposition.

Cara’s ability to successfully negotiate such obligations or commitments on favorable terms, or at all, or Cara’s ability to satisfy any such obligations may impact Cara’s ability to pursue or implement a strategic transaction on terms favorable to Cara, the resulting value to stockholders in a strategic transaction or the cash available for distribution to

Cara’s stockholders in the event of its dissolution. Cara may also incur substantial costs in connection with or as a result of such negotiations or termination of any of its commitments. There can be no assurance that Cara will be successful in negotiating to reduce or eliminate any of its existing contractual or regulatory obligations and commitments, or that Cara will be able to satisfy any such obligations on a timetable that will allow Cara to maximize potential value to its stockholders.

***Lawsuits may be filed against Cara and the members of the Cara Board arising out of the Merger, which may delay or prevent the proposed merger.***

Putative stockholder complaints, including stockholder class action complaints, and other complaints may be filed against Cara, the Cara Board, Tvardi, the Tvardi Board and others in connection with the transactions contemplated by the Merger Agreement. As of the date of this Annual Report on Form 10-K, Cara has received five demand letters from purported stockholders relating to the proposed Merger and the Contemplated Transactions and the disclosures contained in the proxy statement/prospectus related to the Contemplated Transactions. The outcome of litigation is uncertain, and Cara may not be successful in defending against any such future claims. Lawsuits that may be filed against Cara, the Cara Board, Tvardi or the Tvardi Board could delay or prevent the merger, divert the attention of Cara’s management and employees from Cara’s day-to-day business and otherwise adversely affect Cara’s financial condition. Litigation may also impact Cara’s ability to consummate a potential strategic transaction or the ultimate value its stockholders receive in any such transaction.

***Cara is substantially dependent on its remaining employees to facilitate the consummation of the Merger.***

Cara’s ability to consummate a strategic transaction depends upon its ability to retain its employees required to consummate such a transaction, the loss of whose services may adversely impact the ability to consummate such transaction. In January 2024 and June 2024, Cara implemented reductions in force that significantly reduced its workforce in order to conserve its capital resources. As of March 6, 2025, Cara had only ten full-time employees. Cara’s ability to successfully complete the merger depends in large part on Cara’s ability to retain certain remaining personnel. Despite Cara’s efforts to retain these employees, one or more may terminate their employment with Cara on short notice. Cara’s cash conservation activities may yield other unintended consequences, such as attrition beyond its planned reduction in workforce and reduced employee morale, which may cause remaining employees to seek alternative employment. The loss of the services of certain employees could potentially harm Cara’s ability to consummate the merger, to run Cara’s day-to-day business operations and to fulfill Cara’s reporting obligations as a public company.

***Cara may not be successful in completing the Merger, and any strategic transactions that it may consummate in the future could have negative consequences.***

There can be no assurance that Cara will be able to successfully consummate the Merger or that the Merger will be completed on attractive terms, within the anticipated timing, or at all. The process of continuing to evaluate these strategic options may be very costly, time-consuming and complex and Cara has incurred, and may in the future incur, significant costs related to this continued evaluation, such as legal and accounting fees and expenses and other related charges. Cara may also incur additional unanticipated expenses in connection with this process. A considerable portion of these costs will be incurred regardless of whether any such course of action is implemented or transaction is completed. Any such expenses will decrease the remaining cash available for use in its business.

In addition, any strategic business combination or other transactions that Cara may consummate in the future could have a variety of negative consequences and Cara may implement a course of action or consummate a transaction that yields unexpected results that adversely affects its business and decreases the remaining cash available for use in its business or the execution of its strategic plan. There can be no assurances that any particular course of action, business arrangement or transaction, or series of transactions, will be pursued, successfully consummated, lead to increased stockholder value or achieve the anticipated results. Any potential transaction would be dependent on a number of factors that may be beyond its control, including, among other things, market conditions, industry trends, the interest of third parties in a potential transaction with Cara, obtaining stockholder approval and the availability of financing to third parties in a potential transaction with Cara on reasonable terms. Any failure of such a potential transaction to achieve the anticipated results could significantly impair Cara’s ability to enter into any future strategic transactions and may significantly diminish or delay any future distributions to its stockholders.

If Cara is not successful in setting forth a new strategic path for Cara, or if its plans are not executed in a timely fashion, this may cause reputational harm with Cara’s stockholders and the value of its securities may be adversely impacted. In addition, speculation regarding any developments related to the review of strategic alternatives and perceived uncertainties related to the future of Cara could cause its stock price to fluctuate significantly.

***If Cara is successful in completing the Merger, it may be exposed to other operational and financial risks.***

Although there can be no assurance that the Merger will be completed, the negotiation and consummation of the Merger has required and will continue to require significant time on the part of its management, and the diversion of management’s attention may disrupt its business. The negotiation and consummation of the Merger may also require more time or greater cash resources than Cara anticipates and exposes Cara to other operational and financial risks, including:

- increased near-term and long-term expenditures;
- exposure to unknown liabilities;
- higher than expected acquisition or integration costs;
- incurrence of substantial debt or dilutive issuances of equity securities to fund future operations;
- write-downs of assets or goodwill or incurrence of non-recurring, impairment or other charges;
- increased amortization expenses;
- difficulty and cost in combining the operations and personnel of any acquired business with its operations and personnel;
- impairment of relationships with key suppliers or customers of any acquired business due to changes in management and ownership;
- inability to retain key employees of Cara or any acquired business; and
- possibility of future litigation.

Any of the foregoing risks could have a material adverse effect on Cara’s business, financial condition and prospects.

***Cara’s corporate restructuring and the associated reduction in workforce may not result in anticipated savings, could result in total costs and expenses that are greater than expected and could disrupt its business.***

In January 2024 and June 2024, Cara implemented reductions in force that significantly reduced its workforce in order to conserve its capital resources. Cara may not realize, in full or in part, the anticipated benefits, savings and improvements in its cost structure from its restructuring efforts due to unforeseen difficulties, delays or unexpected costs. If Cara is unable to realize the expected operational efficiencies and cost savings from the restructuring, its operating results and financial condition will be adversely affected. Furthermore, its restructuring plan may be disruptive to its operations. For example, Cara’s headcount reductions could yield unanticipated consequences, such as increased difficulties in implementing its business strategy, including retention of its remaining employees. Employee litigation related to the headcount reduction could be costly and prevent management from fully concentrating on the business. Any future growth of Cara’s business would impose significant added responsibilities on members of management, including the need to identify, recruit, maintain and integrate additional employees. Due to its limited resources, Cara may not be able to effectively manage its operations or recruit and retain qualified personnel, which may result in weaknesses in its infrastructure and operations, risks that Cara may not be able to comply with legal and regulatory requirements, loss of employees and reduced productivity among remaining employees.

***The impact and results of Cara’s ongoing strategic process are uncertain and may not be successful.***

The Cara Board remains dedicated to diligent deliberations and the making of informed decisions that the directors believe are in the best interests of the company and its stockholders. There can be no assurance, however, that the company’s current strategic direction, or the Cara’s Board’s evaluation of strategic alternatives, will result in any initiatives, agreements, transactions or plans that will further enhance stockholder value. In addition, given the substantial restructuring of Cara’s operations over the past several years, it may be difficult to evaluate its current business and future prospects on the basis of historical operating performance.

### Risks Related to Cara’s Financial Condition and Capital Requirements

***Cara has incurred significant losses from Cara’s inception, and Cara anticipates that it may incur losses in the foreseeable future.***

Cara is a biopharmaceutical company. Until recently, Cara had focused its efforts primarily on developing KORSUVA injection, Kapruvia and oral difelikefalin for a number of indications with the goal of achieving regulatory approval and, more recently, commercializing KORSUVA injection and Kapruvia. However, the commercial launches of KORSUVA injection and Kapruvia did not achieve meaningful success and, in January 2024, Cara made the strategic decision to focus its efforts on developing oral difelikefalin for the treatment of pruritus associated with NP. In June 2024, Cara discontinued the clinical program in NP following the outcome from the dose-finding Part A of the KOURAGE-1 study evaluating the efficacy and safety of oral difelikefalin for moderate-to-severe pruritus in adult patients with NP in which oral difelikefalin did not demonstrate a meaningful clinical benefit at any dose compared to placebo. At that time, Cara announced it would conduct a comprehensive exploration of strategic alternatives focused on maximizing stockholder value and in December 2024 Cara announced its proposed merger with Tvardi. Since inception, Cara has incurred significant operating and net losses. Cara incurred net losses of $70.9 million, $118.5 million and $85.5 million for the years ended December 31, 2024, 2023 and 2022, respectively. As of December 31, 2024, Cara had an accumulated deficit of $755.6 million. In connection with the termination of all ongoing clinical programs noted above, Cara’s research and development expenses have decreased. Cara expects to continue to incur costs and expenditures in connection with the merger process. There can be no assurance that the proposed merger with Tvardi, or any other course of action, business arrangement or transaction, or series of transactions, will be pursued, successfully consummated or lead to increased stockholder value. Further, if Cara does not obtain additional funding and/or if a strategic transaction is not completed and Cara is unable to continue as a going concern, Cara may have to liquidate its assets and the values Cara receives for the assets in liquidation or dissolution could be significantly lower than the values reflected in Cara’s consolidated financial statements.

Should Cara resume development activities in the future, Cara expects that research and development costs would increase significantly and Cara would continue to incur significant expenses and operating and net losses, as Cara develops and seeks regulatory approval for such product candidates.

Cara’s financial results may fluctuate significantly from year to year, depending on whether Cara resumes development of its product candidate or any future product candidates, the timing of any clinical trials, the receipt of payments under any future agreements Cara may enter into, and its expenditures on other R&D activities as well as any payments owed under the License Agreement with Enteris and any future similar agreements.

Should Cara resume development activities in the future, Cara expects it would continue to incur significant losses for the foreseeable future as it:

- continues the development of any product candidate;
- seeks regulatory approvals for any product candidate that successfully completes clinical trials;
- establishes a sales, marketing and distribution infrastructure in the United States and scales up external manufacturing capabilities to commercialize any products for which Cara may obtain regulatory approval;
- maintains, expands and protects its global intellectual property portfolio;
- hires additional clinical, quality control and scientific personnel; and
- adds operational, financial and management information systems and personnel, including personnel to support Cara’s drug development and potential future commercialization efforts.

Revenues from KORSUVA injection will not be sufficient to enable Cara to reach profitability. To become and remain profitable from product sales, Cara must succeed in developing and eventually commercializing one or more products that generate significant revenue. In order to commercialize any product candidate, Cara will need to be successful in a range of challenging activities, including, should Cara resume the development of its product candidate or any future product candidate, successful registration of oral difelikefalin, discovering, developing, licensing or acquiring additional product candidates and completing preclinical testing and clinical trials for those product candidates, potentially entering into collaboration and license agreements, obtaining regulatory approval for product candidates and manufacturing, marketing and selling approved products and product candidates for which Cara may obtain regulatory approval. Cara may never succeed in these activities and, even if Cara does, may never achieve profitability.

Because of the numerous risks and uncertainties associated with pharmaceutical product development, Cara is unable to accurately predict the timing or amount of increased expenses or when, or if, should Cara resume development activities in the future, Cara will be able to achieve profitability. If Cara is required by the FDA or foreign regulatory authorities, to perform studies in addition to those expected, or if there are any delays in completing Cara’s clinical trials or the development of Cara’s product candidate, Cara’s expenses could increase.

Even if Cara does achieve profitability from product sales, Cara may not be able to sustain or increase profitability on a quarterly or annual basis. Cara’s failure to become and remain profitable would depress the value of the company and could impair Cara’s ability to raise capital, expand its business, should Cara resume the development of its product candidate or any future product candidate, maintain its R&D efforts and diversify its product offerings, or even continue its operations. A decline in the value of the company could also cause you to lose all or part of your investment.

***If Cara decides to resume development of Cara’s product candidate or any future product candidate, Cara will need additional funding and may be unable to raise capital when needed, which would force Cara to delay, reduce or eliminate its product development programs.***

Conducting clinical trials, pursuing regulatory approvals, establishing outsourced manufacturing relationships, and successfully manufacturing and commercializing products and product candidates is expensive. If Cara resumes development of its product candidate or any future product candidate, Cara will need to raise additional capital to resume the development of oral difelikefalin and potentially in-license or acquire other product candidates.

In January 2024, Cara announced a prioritization of its pipeline to focus its resources on its late-stage clinical program evaluating oral difelikefalin in chronic pruritus associated with NP and terminate Cara’s Phase 3 clinical program evaluating oral difelikefalin in pruritus associated with advanced chronic kidney disease, including its KICK 1 and KICK 2 Phase 3 clinical trials. As part of this strategic update, in the first quarter of 2024, Cara reduced its global workforce by approximately 50%. In June 2024, Cara discontinued the clinical program in NP following the outcome from the dose-finding Part A of the KOURAGE-1 study evaluating the efficacy and safety of oral difelikefalin for moderate-to-severe pruritus in adult patients with NP in which oral difelikefalin did not demonstrate a meaningful clinical benefit at any dose compared to placebo. Following the discontinuation of the clinical program in NP, Cara announced that it was undertaking a comprehensive exploration of strategic alternatives focused on maximizing stockholder value. In connection with its streamlined operating plan, Cara further reduced its headcount by approximately 70%. Cara has incurred, and expects to continue to incur, significant costs in connection with this process.

After taking into account the discontinuation of Cara’s clinical development programs, reduction in workforce and comprehensive exploration of strategic alternatives, Cara expects that its current unrestricted cash and cash equivalents and available-for-sale marketable securities will be sufficient to fund its currently anticipated operating plan for at least the next 12 months. In connection with the termination of all ongoing clinical programs, Cara’s research and development expenses have decreased. Should Cara resume development activities in the future, Cara expects that research and development costs would increase significantly. It is possible that the assumptions upon which Cara has based this estimate may prove to be wrong, and Cara could use its capital resources sooner than it presently expects.

Cara’s future funding requirements will depend on many factors, including, but not limited to:

- the discontinuation of its clinical program for oral difelikefalin for chronic pruritus associated with NP;
- the exploration of strategic alternatives to maximize shareholder value, including whether Cara is able to implement any potential strategic alternatives, in a timely manner or at all, whether Cara realizes all or any anticipated benefits of any such transactions and whether any such transactions would generate value for stockholders;
- should Cara resume development activities in the future, the rate of progress and costs related development of and any trials for product candidates;
- should Cara resume development activities in the future, the rate of progress and costs for any product candidates that Cara may in-license or acquire in the future;
- the costs of filing, prosecuting, defending and enforcing any patent claims and other intellectual property rights associated with any product candidate, including any such costs Cara may be required to expend if Cara’s licensors are unwilling or unable to do so;
- the effect of competing technological and market developments; and
- the terms and timing of any collaborative, licensing, co-promotion or other arrangements that Cara may establish.

Future capital requirements will also depend on the extent to which Cara acquires or invests in additional complementary businesses, products and technologies. Until Cara can generate a sufficient amount of product revenue, if ever, Cara may seek to finance future cash needs through public or private equity offerings, debt financings, milestone and royalty payments from corporate collaboration and licensing arrangements, as well as through interest income earned on cash and investment balances. Cara cannot be certain that additional funding will be available on acceptable terms, or at all, and Cara’s ability to raise additional capital may be adversely impacted by potential worsening global economic conditions, including fluctuations in inflation and interest rates, the continuing disruptions to and volatility in the credit and financial markets in the United States and worldwide, including resulting from the ongoing conflicts between Russia and the Ukraine, conflicts in the Middle East, and increasing tensions between China and Taiwan.

### Risks Related to Cara’s Business and the Development and Commercialization of Its Product and Potential Product Candidates

***Should Cara resume development of its product candidate or future product candidates, if Cara is unable to successfully complete clinical development, obtain regulatory approvals and commercialize its product candidate or future product candidates, or experience significant delays in doing so, its business will be materially harmed.***

Should Cara resume development of its product candidate or any future product candidates, its business will depend on the successful development, regulatory approval, and commercialization of such product candidates. In January 2024, Cara announced a prioritization of its pipeline to focus its resources on its late-stage clinical program evaluating oral difelikefalin in chronic pruritus associated with NP and terminate its Phase 3 clinical program evaluating oral difelikefalin in pruritus associated with advanced chronic kidney disease, including the KICK 1 and KICK 2 Phase 3 clinical trials. In June 2024, Cara discontinued the clinical program in NP following the outcome from the dose-finding Part A of the KOURAGE-1 study evaluating the efficacy and safety of oral difelikefalin for moderate-to-severe pruritus in adult patients with NP in which oral difelikefalin did not demonstrate a meaningful clinical benefit at any dose compared to placebo. Should Cara resume development activities in the future, Cara cannot be certain that any such product candidates will be successful in clinical trials or receive regulatory approval. Regulatory authorities may interpret Cara’s data differently than Cara does. Cara is not permitted to market or promote any of its product candidates before it receives regulatory approval from the FDA or comparable foreign regulatory authorities, and, should Cara resume development activities in the future it may never receive such regulatory approval for oral difelikefalin or any future product candidates.

Should Cara resume development of its product candidate or any future product candidates, the success of such product candidates will depend on many factors, including but not limited to:

- successful enrollment in, and completion of, clinical trials, as well as completion of preclinical studies;
- favorable efficacy and acceptable safety data from Cara’s clinical trials and other studies;
- receipt of additional regulatory approvals;
- managing Cara’s reliance on sole-source third parties such as its third-party vendors, suppliers, and manufacturers;
- the performance by CROs or other third parties and consultants Cara may retain of their duties to Cara in a manner that complies with its protocols and applicable laws and that protects the integrity of the resulting data;
- obtaining and maintaining patent, trade secret and other intellectual property protection and regulatory exclusivity;
- ensuring Cara does not infringe, misappropriate or otherwise violate the valid patent, trade secret or other intellectual property rights of third parties;
- successfully launching, either alone or with a commercial partner, any product candidate for which regulatory approval is received;
- obtaining and maintaining favorable reimbursement from third-party payers and governments for products and product candidates;
- competition with other products;
- post-marketing commitments, if any, to regulatory agencies following regulatory approval of any product candidate;
- continued acceptable safety profile following regulatory approval; and
- manufacturing or obtaining sufficient supplies of Cara’s products and any product candidate that may be necessary for use in clinical trials for evaluation of any product candidate and commercialization of any approved product.

If Cara does not achieve and maintain one or more of these factors in a timely manner or at all, Cara could experience significant delays in its ability to, or be unable to obtain regulatory approvals for, and/or to successfully commercialize any products or product candidates, should Cara resume development of its product candidate or any future product candidate, which would materially harm Cara’s business and Cara may not be able to generate sufficient revenues and cash flows to continue its operations.

***Clinical and preclinical drug development involves a lengthy and expensive process with uncertain timelines and outcomes, and the results of preclinical studies and early clinical trials are not necessarily predictive of future results. Should Cara resume development of its product candidate or any potential future product candidate, such product candidate may not achieve favorable results in clinical trials or preclinical studies or receive regulatory approval on a timely basis, if at all.***

Drug development is expensive and can take many years to complete, and its outcome is inherently uncertain. Should Cara resume development of its product candidate or any future product candidate, Cara cannot guarantee that any clinical trials or preclinical studies will be conducted as planned, including whether Cara is able to meet expected timeframes for data readouts, or complete on schedule, if at all, and failure can occur at any time during the trial or study process, including due to factors that are beyond Cara’s control.

Should Cara resume development activities in the future, the results from preclinical studies or clinical trials of oral difelikefalin, any potential future product candidates, or a competitor’s product candidate in the same class may not predict the results of later clinical trials, and interim, topline or preliminary results of a clinical trial are not necessarily indicative of final results. Oral difelikefalin or any future product candidate in later stages of clinical trials may fail to show the desired characteristics despite having progressed through preclinical studies and initial clinical trials. It is not uncommon to observe results in clinical trials that are unexpected based on preclinical studies and early clinical trials, and many product candidates fail in clinical trials despite very promising early results. For example, in December 2023, Cara announced the outcome from the dose-finding Part A of the KIND 1 study evaluating the efficacy and safety of oral difelikefalin in moderate-to-severe pruritus associated with atopic dermatitis as an adjunct to topical corticosteroids. In the study, oral difelikefalin did not demonstrate a meaningful clinical benefit, which resulted in Cara’s decision to discontinue the clinical program in atopic dermatitis. Further, in June 2024, Cara discontinued the clinical program in NP following the outcome from the dose-finding Part A of the KOURAGE-1 study evaluating the efficacy and safety of oral difelikefalin for moderate-to-severe pruritus in adult patients with NP in which oral difelikefalin did not demonstrate a meaningful clinical benefit at any dose compared to placebo.

Moreover, preclinical and clinical data may be susceptible to varying interpretations and analyses. A number of companies in the biopharmaceutical and biotechnology industries have suffered significant setbacks in clinical development even after achieving promising results in earlier studies. Such setbacks have occurred and may occur for many reasons, including, but not limited to: clinical sites and investigators may deviate from clinical trial protocols, whether due to lack of training or otherwise, and Cara may fail to detect any such deviations in a timely manner; patients may fail to adhere to any required clinical trial procedures, including any requirements for post-treatment follow-up; product candidates may fail to demonstrate safety, potency (or efficacy) in certain patient subpopulations, which has not been observed in earlier trials due to limited sample size, lack of analysis or otherwise; or, should Cara resume development of its product candidate or any future product candidate, its clinical trials may not adequately represent the patient populations Cara intends to treat, whether due to limitations in Cara’s trial designs or otherwise, such as where one patient subgroup is overrepresented in the clinical trial. There can be no assurance that Cara will not suffer similar setbacks despite the data Cara may observe in earlier studies. Based upon negative or inconclusive results, Cara or any current or any future collaborator may decide, or regulators may require, Cara to conduct additional preclinical studies or clinical trials, which would cause Cara to incur additional operating expenses and delays and may not be sufficient to support regulatory approval on a timely basis or at all.

As a result, Cara cannot be certain that, should Cara resume development of its product candidate or any future product candidate, any clinical trials or preclinical studies will be successful. Any safety concerns observed in any clinical trials, should Cara resume development of its product candidate or any future product candidate, could limit the prospects for regulatory approval of such product candidate, which could have a material adverse effect on Cara’s business, financial condition, results of operations and prospects.

***Should Cara resume development of its product candidate or any future product candidate, if Cara experiences delays or difficulties in the enrollment of patients in clinical trials, Cara’s receipt of necessary regulatory approvals could be delayed or prevented.***

Should Cara resume development of Cara’s product candidate or any future product candidate, Cara may not be able to initiate or continue conducting clinical trials for any such product candidate if Cara is unable to locate and enroll a sufficient number of eligible patients to participate in these trials as required by the FDA or similar regulatory authorities outside the United States. Cara’s competitors may have ongoing clinical trials for product candidates that treat the same indications as its future product candidates, should Cara resume development activities in the future, and patients who would otherwise be eligible for Cara’s clinical trials may instead enroll in clinical trials of its competitors’ product candidates. Patient enrollment is affected by other factors including:

- the size and nature of the patient population;
- the severity of the disease under investigation;
- the eligibility criteria for, and design of, the trial in question;
- the perceived risks and benefits of the product candidate under study;
- competition in recruiting and enrolling patients in clinical trials;
- the efforts to facilitate timely enrollment in clinical trials;
- the patient referral practices of physicians;
- the ability to monitor patients adequately during and after treatment;
- the proximity and availability of clinical trial sites for prospective patients; and
- delays or difficulties due to public health crises, such as pandemics or other similar outbreaks.

For example, Cara experienced a delay in patient enrollment for its Phase 2 clinical trial of oral difelikefalin for the treatment of pruritus in patients with hepatic impairment due to primary biliary cholangitis that led to Cara’s decision to discontinue and unblind this trial. Should Cara resume development of its product candidate or any future product candidate, Cara could in the future experience similar delays in programs for such product candidates.

Should Cara resume development of its product candidate or any future product candidate, Cara’s inability to enroll a sufficient number of patients for Cara’s clinical trials would result in significant delays and could require Cara to abandon one or more clinical trials altogether. Cara may encounter difficulties and/or delays in completing any future enrollments, should Cara resume development activities in the future. Enrollment delays in Cara’s clinical trials may result in increased development costs for Cara’s product candidate, or the inability to complete development of its product candidate, which would cause the value of Cara to decline, limit Cara’s ability to obtain additional financing, and materially impair Cara’s ability to generate revenues.

***Should Cara resume development of its product candidate or any future product candidate, Cara expects to continue to rely on third parties to conduct its preclinical studies and clinical trials, and those third parties may not perform satisfactorily, including failing to meet deadlines for the completion of such trials.***

Should Cara resume development of its product candidate or any future product candidate, Cara expects to continue to rely on third parties, such as CROs, clinical data management organizations, medical institutions and clinical investigators, to conduct its preclinical studies and clinical trials. Any agreements Cara may enter into might terminate for a variety of reasons, including a failure to perform by the third parties. If Cara needs to enter into alternative arrangements that would delay its product development activities, should Cara resume development of its product candidate or any future product candidate, and adversely affect its business.

Cara’s reliance on these third parties for development activities will reduce its control over these activities. Nevertheless, Cara is responsible for ensuring that each of its studies is conducted in accordance with the applicable protocol, legal, regulatory and scientific standards and its reliance on the CROs does not relieve Cara of its regulatory responsibilities. For example, should Cara resume development activities in the future, Cara will remain responsible for ensuring that each of its clinical trials is conducted in accordance with the general investigational plan and protocols for the trial and for ensuring that Cara’s preclinical trials are conducted in accordance with FDA’s good laboratory practice, or GLP, as appropriate. Moreover, the FDA and comparable foreign regulatory authorities require Cara to comply with standards, commonly referred to as good clinical practices, or GCPs, for conducting, recording and reporting the results of clinical trials to assure that data and reported results are credible and accurate and that the rights, integrity and confidentiality of trial participants are protected. Regulatory authorities enforce these requirements through periodic inspections of trial sponsors, clinical investigators and trial sites. If Cara or any of its CROs fail to comply with applicable GCPs, the clinical data generated in Cara’s clinical trials may be deemed unreliable and the FDA or comparable foreign regulatory authorities may require Cara to perform additional clinical trials before approving its marketing applications. Cara cannot assure you that upon inspection by a given regulatory authority, such regulatory authority will determine that any of Cara’s clinical trials complies with GCP regulations. In addition, Cara’s clinical trials must be conducted with product produced, under current good manufacturing practices, or cGMP, regulations. Cara’s failure to comply with these regulations should Cara resume development activities in the future, may require Cara to repeat clinical trials, which would delay the regulatory approval process. Cara also is required to register certain clinical trials and post the results of certain completed clinical trials on a government-sponsored database, ClinicalTrials.gov, within specified timeframes. Failure to do so can result in fines, adverse publicity and civil and criminal sanctions.

Should Cara resume development activities in the future, CROs Cara engages may also have relationships with other entities, some of which may be Cara’s competitors. In addition, Cara’s CROs would not be its employees, and except for remedies available to Cara under its agreements with such CROs, Cara would not be able to control whether or not they devote sufficient time and resources to its clinical, non-clinical and preclinical programs. If these third parties do not successfully carry out their contractual duties, meet expected deadlines or conduct any future preclinical studies or clinical trials in accordance with regulatory requirements or Cara’s stated protocols, if they need to be replaced or if the quality or accuracy of the clinical data they obtain is compromised due to the failure to adhere to any future clinical protocols, regulatory requirements or for other reasons, Cara’s clinical trials, should Cara resume development activities in the future, may be extended, delayed or terminated and Cara may not be able to obtain, or may be delayed in obtaining, marketing approvals for any such product candidate and will not be able to, or may be delayed in its efforts to, successfully commercialize its products and product candidates. As a result, Cara’s results of operations and the commercial prospects for Cara’s products and product candidates would be harmed, Cara’s costs could increase and its ability to generate revenues could be delayed.

If any of Cara’s relationships with a third-party CRO that Cara engages terminates, Cara may not be able to enter into arrangements with alternative CROs or to do so on commercially reasonable terms. Switching or adding additional CROs involves additional cost and requires management time and focus. In addition, there is a natural transition period when a new CRO commences work. As a result, delays could occur, which could compromise Cara’s ability to meet its desired development timelines. Though Cara carefully manages its relationships with its CROs, should Cara resume development activities in the future, there can be no assurance that Cara will not encounter challenges or delays in the future or that these delays or challenges will not have a material adverse impact on Cara’s business, financial condition and prospects.

***Should Cara resume development of its product candidate or any future product candidate, manufacturers upon whom Cara may rely could fail to produce a product candidate in the volumes that Cara may require on a timely basis, or to comply with stringent regulations applicable to pharmaceutical drug manufacturers, and Cara could face delays in the development of a product candidate.***

Should Cara resume development of its product candidate or any future product candidate, Cara expects to continue to rely on third parties for the manufacture of any such product candidate for preclinical and clinical testing. If Cara were to experience an unexpected loss of supply of a product candidate for any reason, whether as a result of manufacturing, supply or storage issues or otherwise, Cara could experience delays, disruptions, suspensions or terminations of, or be required to restart or repeat, any clinical studies.

Should Cara resume development of its product candidate or any future product candidate, any problems or delays Cara experiences in preparing for commercial-scale manufacturing of a product or product candidate may result in a delay in FDA approval of the product or product candidate or may impair Cara’s ability to manufacture commercial quantities, which would adversely affect Cara’s business. For example, Cara’s manufacturers would need to produce specific batches of a product or product candidate to demonstrate acceptable stability under various conditions and for commercially viable lengths of time. Cara and its contract manufacturers would need to demonstrate to the FDA and other regulatory authorities acceptable stability data for any product candidate, as well as validate methods and manufacturing processes, in order to receive and maintain regulatory approval to commercialize any approved product candidates. Furthermore, if Cara’s commercial manufacturers fail to deliver the required commercial quantities of bulk drug substance or finished product on a timely basis and at commercially reasonable prices, Cara would likely be unable to meet demand for its product and Cara would lose potential revenues.

The manufacture of pharmaceutical products requires significant expertise and capital investment, including the development of advanced manufacturing techniques and process controls. Manufacturers of pharmaceutical products often encounter difficulties in production, particularly in scaling up initial production. These problems include difficulties with production costs and yields, quality control, including stability of the products and product candidates and quality assurance testing, shortages of qualified personnel, as well as compliance with strictly enforced federal, state and foreign regulations. Manufacturers that Cara engages may not perform as agreed. If manufacturers Cara engages were to encounter any of these difficulties, Cara’s ability to provide products for commercialization and product candidates to patients in any future clinical trials, should Cara resume development activities in the future, would be jeopardized. This could, among other things, lead to increased costs, lost revenue, damage to customer relationships, time and expense spent investigating the cause and, depending on the cause, similar losses with respect to other batches or products. If problems are not discovered before the product is released to the market, recall and product liability costs may also be incurred.

Further, should Cara resume development of its product candidate or any future product candidate, Cara may rely on proprietary technology developed by contract manufacturers for purposes of manufacturing certain of its products and product candidates and Cara’s failure to negotiate or maintain the long-term use of any such proprietary technology or the inability for its contract manufacturers to produce any products and product candidates or components of any products and product candidates in the volumes that Cara requires on a timely basis, may lead to delays or interruptions in the regulatory approval or commercialization process, as well as increased costs. For example, in August 2019, Cara entered into the Enteris License Agreement and intended to use Enteris’s Peptelligence® technology to develop, manufacture and commercialize oral difelikefalin. In light of Cara’s decision to discontinue the development of oral difelikefalin, it is possible that the Enteris License Agreement will be terminated. If Cara decides to resume development of oral difelikefalin in the future, if the Enteris License Agreement has been terminated or, for any other reason, Cara experiences any interruptions in the manufacture, delivery or scale-up of the Enteris formulation technology, Cara may experience delays in the development and commercialization of oral difelikefalin. Further, if Cara is unable to maintain its relationship with Enteris, Cara may be forced to reformulate oral difelikefalin which could significantly delay commercializing oral difelikefalin and require Cara to incur additional costs in connection with such reformulation and potentially needed to seek additional approvals from the FDA. The operations of Cara’s third-party manufacturers have been and, should Cara resume development of its product candidate or any future product candidate, may in the future be constrained or disrupted and their operating capacity may be reduced by public health crises, such as pandemics or other similar outbreaks, which could negatively impact Cara’s clinical development and commercialization timelines.

In addition, should Cara resume development of its product candidate or any future product candidate, any manufacturers must comply with cGMP requirements enforced by the FDA through its facilities inspection program. These requirements include quality control, quality assurance and the maintenance of records and documentation. Manufacturers of Cara’s products and product candidates may be unable to comply with these cGMP requirements and with other FDA, state and foreign regulatory requirements. If Cara’s contract manufacturers cannot successfully manufacture material that conforms to Cara’s specifications and the strict regulatory requirements of the FDA or other regulatory authorities, they will not be able to secure and/or maintain regulatory approval for their manufacturing facilities. In addition, regulatory agencies subject an approved product, its manufacturer and the manufacturer’s facilities to continual review and inspections, including periodic unannounced inspections. The subsequent discovery of previously unknown problems with Cara’s current or any future approved products, including adverse events of unanticipated severity or frequency, or problems with the facilities where Cara’s current or any future approved products are manufactured, may result in restrictions on the marketing of Cara’s current or any such future approved products, up to and including withdrawal of the affected product from the market. Cara has little control over its manufacturers’ compliance with these regulations and standards. If the FDA or a comparable foreign regulatory authority does not approve these facilities for the manufacture of its products and product candidate or if it withdraws any such approval in the future, Cara may need to find alternative manufacturing facilities, which would significantly impact Cara’s ability to develop, obtain regulatory approval for or market its products and any product candidate, should Cara resume development of its product candidate or any future product candidate, if approved. A failure to comply with these requirements may result in fines and civil penalties, suspension of production, suspension, delay or denial of product approval, product seizure or recall, or withdrawal of product approval. If the safety of any quantities supplied is compromised due to Cara’s manufacturers’ failure to adhere to applicable laws or for other reasons, Cara may not be able to obtain regulatory approval for or successfully commercialize its products and any potential future product candidates.

***Should Cara resume development of its product candidate or any future product candidate, even if Cara obtains regulatory approvals for such product candidate, they may never be successfully launched or become profitable, in which case Cara’s business, prospects, operating results and financial condition may be materially harmed.***

In order to successfully launch a product and have it become profitable, should Cara resume development of its product candidate or any future product candidate, Cara anticipates that it will have to dedicate substantial time and resources. Cara’s ability to generate revenues from any commercialized products will depend on a number of factors, including, but not limited to:

- achievement of broad market acceptance and coverage by government and third-party payers for Cara’s product;
- Cara’s or Cara’s partners’ effectiveness in marketing and selling Cara’s product;
- Cara’s ability to have manufactured commercial quantities of its product at acceptable cost levels and in compliance with regulatory requirements;
- Cara’s ability to maintain a cost-efficient organization and, to the extent Cara seeks to do so, to collaborate successfully with additional third parties;
- Cara’s ability to expand and maintain intellectual property protection for its product successfully;
- the efficacy and safety of Cara’s product; and
- Cara’s ability to comply with regulatory requirements, which are subject to change.

Because of the numerous risks and uncertainties associated with Cara’s commercialization efforts, Cara may not be able to achieve profitability. For example, Cara previously successfully developed KORSUVA injection through regulatory approval, for the treatment of moderate-to-severe pruritus associated with chronic kidney disease in adults undergoing hemodialysis. However, this product failed to achieve meaningful commercial success.

Even if Cara does achieve profitability, Cara may not be able to sustain or increase profitability on a quarterly or annual basis. A failure to become and remain profitable would depress the value of the company and could impair Cara’s ability to raise capital, expand its business, diversify its product offerings or continue its operations. A decline in the value of the company could also cause you to lose all or part of your investment.

***If Cara or its collaborators are unable to establish effective marketing and sales capabilities, or if Cara is unable to enter into or maintain agreements with third parties to market and sell its product and, should Cara resume development of its product candidate or any future product candidate, any product candidate, if they are approved, Cara may be unable to generate product revenues.***

Cara currently does not have an internal commercial infrastructure for the marketing, sale, and distribution of pharmaceutical products. Should Cara resume development of its product candidate or any future product candidate, in order to commercialize any such product candidate (if approved) in the United States, Cara will need to build its marketing, sales and distribution capabilities. Cara has no prior experience in the marketing, sale and distribution of pharmaceutical products, and there are significant risks involved in the building and managing of a commercial infrastructure to the extent Cara chooses to do so in the future. The establishment and development of Cara’s own sales force and related plans to market any products in the United States Cara may develop will be expensive and time-consuming and could delay any product launch, and Cara may not be able to successfully develop this capability. Should Cara resume development activities in the future, if oral difelikefalin or any future product candidate is approved for marketing outside of the United States, Cara intends to make and maintain arrangements with third parties to perform these services.

Cara, or its partners or collaborators, will have to compete with other pharmaceutical and biotechnology companies to recruit, hire, train, manage and retain marketing and sales personnel. In the event that Cara or its partners or collaborators are unable to develop a marketing and sales infrastructure, Cara may not be able to commercialize any potential future product candidate, which would limit Cara’s ability to generate product revenues. Factors that may inhibit Cara’s or Cara’s partners’ or collaborators’ efforts to commercialize any potential future product candidate, if approved, include:

- inability to recruit, train, manage and retain adequate numbers of effective sales and marketing personnel;
- inability of sales personnel to obtain access to physicians and other providers or educate adequate numbers of physicians and other providers on the benefits of prescribing the product;
- inability to effectively oversee a geographically dispersed sales and marketing team;
- the lack of complementary products to be offered by sales personnel, which may put Cara at a competitive disadvantage relative to companies with more extensive product lines; and
- unforeseen costs and expenses associated with creating an independent sales and marketing organization.

Cara’s or Cara’s partners’ or collaborators’ sales force and marketing teams may not be successful in commercializing any approved product candidate that may receive regulatory approval. For example, Cara previously partnered with CSL Vifor for the commercialization of KORSUVA injection, but that product has not achieved meaningful commercial success.

In the event that Cara is unable to successfully collaborate with a third-party marketing and sales organization to commercialize any approved product candidate outside the United States, Cara’s ability to generate product revenues may be limited. To the extent that Cara relies on third parties to commercialize products for which Cara obtains regulatory approval, Cara may receive less revenues than if Cara commercialized these products itself. In addition, Cara would have less control over the sales efforts of any other third parties involved in Cara’s commercialization efforts.

***Cara faces significant competition from other pharmaceutical and biotechnology companies, academic institutions, government agencies and other research organizations. Cara’s operating results will suffer if it fails to compete effectively.***

The development and commercialization of new drug products is highly competitive. Cara faces competition with respect to its current product, KORSUVA injection and, should Cara resume development of its product candidate or any future product candidate, Cara will face competition with respect to any product candidates that it may seek to develop or commercialize in the future, from major pharmaceutical companies, specialty pharmaceutical companies and biotechnology companies worldwide. There are a number of large pharmaceutical and biotechnology companies that currently market and sell products or are pursuing the development of products for the treatment of pruritus. Potential competitors also include academic institutions, government agencies and other public and private research organizations that conduct research, seek patent protection and establish collaborative arrangements for research, development, manufacturing and commercialization.

Among the companies that currently market or are developing therapies in the pruritus space that, if approved, Cara’s oral difelikefalin would potentially compete with include: Pfizer, AbbVie, Eli Lilly, Amgen, Regeneron, Leo Pharma, Galderma, Chugai, Incyte and others.

Cara’s commercial opportunity could be reduced or eliminated if its competitors develop and commercialize products that are safer, more effective, have fewer or less severe side effects, are more convenient or are less expensive than Cara’s product or any future product candidates. Cara’s competitors also may obtain FDA or other regulatory approval for their products more rapidly than Cara may obtain approval for Cara’s, which could result in Cara’s competitors establishing a strong market position before Cara is able to enter the market. In addition, Cara’s ability to compete may be affected in many cases by insurers or other third-party payers seeking to encourage the use of generic products. Should Cara resume development of its product candidate or any future product candidate, generic products may be approved or used in clinical practice in some markets for the indication that such product candidate is intended to treat. Cara expects that any potential future product candidates, if approved, would be priced at a significant premium over competitive generic products, if any.

Many of the companies against which Cara is competing or against which Cara may compete in the future have significantly greater financial resources and expertise in R&D, manufacturing, preclinical testing, conducting clinical trials, obtaining regulatory approvals and marketing approved products than Cara does. Mergers and acquisitions in the pharmaceutical and biotechnology industries may result in even more resources being concentrated among a smaller number of Cara’s competitors. Early-stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large and established companies. These third parties compete with Cara in recruiting and retaining qualified scientific and management personnel, establishing clinical trial sites and patient recruitment for clinical trials, as well as in acquiring technologies complementary to, or necessary for, Cara’s programs.

***Cara faces potential product liability exposure, and if successful claims are brought against Cara, Cara may incur substantial liability and, should Cara resume development of Cara’s product candidate or any future product candidate, may have to limit commercialization of a product candidate.***

Cara faces an inherent risk of product liability lawsuits related to the sale of its products to, use of its products by, and testing of any product candidate in, seriously ill patients. For example, product liability claims might be brought against Cara by consumers, healthcare providers or others using, administering or selling its products. Cara may be sued if any product it develops allegedly causes injury or is found to be otherwise unsuitable during clinical testing, manufacturing, marketing or sale. Any such product liability claims may include allegations of defects in manufacturing, defects in design, a failure to warn of dangers inherent in the product, negligence, strict liability or a breach of warranties. If Cara cannot successfully defend itself against these claims, Cara will incur substantial liabilities. Regardless of merit or eventual outcome, liability claims may result in:

- loss of revenue from decreased demand for Cara’s products and/or any potential product candidate;
- impairment of Cara’s business reputation or financial stability;
- costs of related litigation;
- substantial monetary awards to patients or other claimants;
- diversion of management attention and scientific resources from Cara’s business operations;
- withdrawal of clinical trial participants and potential termination of clinical trial sites or entire clinical programs;
- the inability to successfully commercialize Cara’s products and/or any potential product candidate;
- significant negative media attention;
- initiation of investigations by regulators or increased regulatory scrutiny;
- product recalls, withdrawals or labeling, marketing or promotional restrictions; and
- the inability to commercialize any potential product candidate.

Should Cara resume development of its product candidate or any future product candidate, for any product candidate that is approved for commercial sale, Cara will be highly dependent upon healthcare provider and patient perceptions of Cara and the safety and quality of Cara’s products. Cara could be adversely affected if it is subject to negative publicity. Cara could also be adversely affected if any of its products or any similar products distributed by other companies prove to be, or are asserted to be, harmful to patients. Because of Cara’s dependence upon consumer perceptions, any adverse publicity associated with illness or other adverse effects resulting from patients’ use or misuse of Cara’s products or any similar products distributed by other companies could have a material adverse impact on Cara’s financial condition or results of operations.

Cara has obtained limited product liability insurance coverage for its products and its clinical trials with a $5.0 million annual aggregate coverage limit in the United States and various other coverage limits outside of the United States. However, Cara’s insurance coverage may not reimburse it or may not be sufficient to reimburse it for any expenses or losses Cara may suffer. Moreover, insurance coverage is becoming increasingly expensive, and, in the future, Cara may not be able to maintain insurance coverage at a reasonable cost or in sufficient amounts to protect it against losses due to liability. Should Cara resume development of its product candidate or any future product candidate, Cara would attempt to expand its insurance coverage to include the sale of commercial products for such product candidate, but may be unable to obtain commercially reasonable product liability insurance for any products approved for marketing, or at all. On occasion, large judgments have been awarded in class action lawsuits based on drugs that had unanticipated side effects. A successful product liability claim or series of claims brought against Cara could cause its stock price to fall and, if judgments exceed its insurance coverage, could decrease its cash and adversely affect its business.

***Cara may expend its limited resources to pursue a particular product candidate or indication and fail to capitalize on its product candidate or indications that may be more profitable or for which there is a greater likelihood of success.***

Because Cara has limited financial and managerial resources, it has focused on developing product candidates for specific indications that Cara believed to be most likely to succeed, in terms of both regulatory approval and commercialization. As a result, Cara may have foregone or delayed, or, should Cara resume development activities in the future, may in the future forgo or delay, pursuit of opportunities with other product candidates or for other indications that may prove to have greater commercial potential. For example, in 2023, Cara terminated the atopic dermatitis program as part of its strategy to focus on its advanced chronic kidney disease and NP programs. Further, in January 2024, Cara announced a prioritization of its pipeline to focus its resources on its late-stage clinical program evaluating oral difelikefalin in chronic pruritus associated with NP and terminated its Phase 3 clinical program evaluating oral difelikefalin in pruritus associated with advanced chronic kidney disease. In June 2024, Cara discontinued the clinical program in NP following the outcome from the dose-finding Part A of the KOURAGE-1 study evaluating the efficacy and safety of oral difelikefalin for moderate-to-severe pruritus in adult patients with NP in which oral difelikefalin did not demonstrate a meaningful clinical benefit at any dose compared to placebo. Cara’s resource allocation decisions may cause it to fail to capitalize on viable commercial products or profitable market opportunities. Should Cara resume development activities in the future, its spending on future R&D programs and product candidates for specific indications may not yield any commercially viable products. If Cara does not accurately evaluate the commercial potential or target market for a particular product candidate, Cara may relinquish valuable rights to that product candidate through collaboration, licensing, or other royalty arrangements in cases in which it would have been more advantageous for Cara to retain sole development and commercialization rights to such product candidate.

***Cara’s future growth may depend on its ability to identify and develop products and, should Cara resume development activities in the future, if Cara does not successfully identify and develop product candidates or integrate them into its operations, Cara may have limited growth opportunities.***

Should Cara resume development activities in the future, its business strategy may require that it develop a product that it believes is a strategic fit with its focus on pruritus therapeutics. However, these business activities may entail numerous operational and financial risks, including:

- difficulty or inability to secure financing to fund development activities for such development;
- disruption of Cara’s business and diversion of its management’s time and attention;
- higher than expected development costs;
- exposure to unknown liabilities;
- difficulty in managing multiple clinical trials; and
- inability to successfully develop new products or clinical failure.

Cara has limited resources to identify and execute the development of products. Moreover, Cara may devote resources to potential developments that are never completed, or Cara may fail to realize the anticipated benefits of such efforts. If Cara does not successfully develop and commercialize product candidates, Cara may not be able to obtain product revenues in future periods.

***The regulatory approval processes of the FDA and comparable foreign authorities are lengthy, time consuming and inherently unpredictable. Should Cara resume development activities in the future, if Cara is not able to obtain, or if there are delays in obtaining, required additional regulatory approvals, Cara will not be able to commercialize any product candidates as expected, and Cara’s ability to generate revenue will be materially impaired.***

The time required to obtain approval by the FDA and comparable foreign authorities is unpredictable but typically takes many years following the commencement of clinical trials and depends upon numerous factors, including the substantial discretion of the regulatory authorities. In addition, approval policies, regulations, or the type and amount of clinical data necessary to gain approval may change during the course of a product candidate’s clinical development and may vary among jurisdictions. Should Cara resume development of its product candidate or any future product candidate, it is possible that none of such potential product candidates Cara may seek to develop in the future will ever obtain regulatory approval.

Product candidates and the activities associated with their development and commercialization, including their design, testing, manufacture, safety, efficacy, recordkeeping, labeling, storage, approval, advertising, promotion, sale and distribution, are subject to comprehensive regulation by the FDA and other regulatory agencies in the United States and by the EMA, and similar regulatory authorities in other countries. Should Cara resume development of its product candidate or any future product candidate, failure to obtain marketing approval for a product candidate will prevent Cara from commercializing that product candidate. Should Cara resume development activities in the future, Cara expects it would continue to rely on third-party CROs, other vendors, and consultants to assist Cara in filing and supporting the applications necessary to gain marketing approvals. Securing marketing approval requires the submission of extensive preclinical and clinical data and supporting information to regulatory authorities for each therapeutic indication to establish the product candidate’s safety and efficacy for that indication. Securing marketing approval also requires the submission of information about the product manufacturing process to, and inspection of manufacturing facilities by, the regulatory authorities.

Clinical testing is expensive and can take many years to complete, and its outcome is inherently uncertain. Failure can occur at any time during the clinical trial process. The results of preclinical studies and early clinical trials of any product candidates, should Cara resume development of its product candidate or any future product candidate, may not be predictive of the results of later-stage clinical trials. Product candidates in later stages of clinical trials may fail to show the desired safety and efficacy traits despite having progressed through preclinical studies and initial clinical trials. A number of companies in the biopharmaceutical industry have suffered significant setbacks in advanced clinical trials due to lack of efficacy or adverse safety profiles, notwithstanding promising results in earlier trials. Should Cara resume development activities in the future, future clinical trial results may not be successful. Cara may also experience numerous unforeseen events during, or as a result of, clinical trials that could delay or prevent Cara’s ability to receive marketing approval or commercialize any product candidates, including:

- regulators or institutional review boards may not authorize Cara or its investigators to commence a clinical trial or conduct a clinical trial at a prospective trial site;
- Cara may experience delays in reaching, or fail to reach, agreement on acceptable clinical trial contracts or clinical trial protocols with prospective trial sites;
- clinical trials of Cara’s product candidates may produce negative or inconclusive results, and Cara may decide, or regulators may require Cara, to conduct additional clinical trials or abandon product development programs;
- the number of patients required for clinical trials of any product candidate may be larger than Cara anticipates, enrollment in these clinical trials may be slower than Cara anticipates or participants may drop out of these clinical trials at a higher rate than Cara anticipates;
- Cara’s third-party contractors may fail to comply with regulatory requirements or meet their contractual obligations to Cara in a timely manner, or at all;
- Cara may have to suspend clinical trials, or terminate clinical trials of any potential product candidate for various reasons, including a finding that the participants are being exposed to unacceptable health risks;
- regulators or institutional review boards may require that Cara or its investigators suspend or terminate clinical research for various reasons, including noncompliance with regulatory requirements or a finding that the participants are being exposed to unacceptable health risks;
- changes in marketing approval policies during the development period;
- changes in or the enactment of additional statutes or regulations;
- changes in regulatory review for each submitted product application;
- the cost of clinical trials of Cara’s product candidate may be greater than it anticipates;
- the supply or quality of Cara’s product candidate or other materials necessary to conduct clinical trials of any potential product candidate may be insufficient or inadequate; and
- any potential product candidate may have undesirable side effects or other unexpected characteristics, causing Cara or its investigators, regulators or institutional review boards to suspend or terminate the trials.

In addition, unfavorable changes in Cara’s industry or the global economy, including as a result of macroeconomic factors related to fluctuations in inflation and interest rates, political turmoil, or public health crises such as pandemics or other similar outbreaks, could contribute to some of the events listed above and should Cara resume development activities in the future further impact Cara’s ability to progress any future clinical trials, submit for marketing approval or commercialize any product candidates, if approved, as planned. Further, if and to the extent, global health concerns prevent the FDA or other regulatory authorities from conducting their regular inspections, reviews, or other regulatory activities, it could significantly impact the ability of the FDA or other regulatory authorities to timely review and process any additional regulatory submissions Cara may make, which could affect Cara’s ability to obtain marketing approval for any potential product candidate.

Should Cara resume development of its product candidate or any future product candidate, if Cara is unable to successfully complete clinical trials of a product candidate or other testing, if the results of these trials or tests are not positive or are only modestly positive or if there are safety concerns, Cara may:

- be delayed in obtaining marketing approval for any potential product candidate;
- not obtain marketing approval at all;
- obtain approval for indications or patient populations that are not as broad as intended or desired;
- obtain approval with labeling that includes significant use or distribution restrictions or safety warnings;
- be subject to additional post-marketing testing requirements; or
- have the product removed from the market after obtaining marketing approval.

Furthermore, regulatory authorities have substantial discretion in the approval process and may refuse to accept any application or may decide that Cara’s data is insufficient for approval and require additional preclinical, clinical or other studies, including with respect to third-party technology used in any potential product candidates. In addition, varying interpretations of the data obtained from preclinical and clinical testing could delay, limit or prevent marketing approval of a product candidate. Any marketing approval Cara ultimately obtains may be limited or subject to restrictions or post-approval commitments that render the approved product not commercially viable.

Finally, even if Cara were to obtain approval, regulatory authorities may approve a product candidate for fewer or more limited indications than Cara requests, may grant approval contingent on the performance of costly post-marketing clinical trials, or may approve a product candidate with a label that does not include the labeling claims necessary or desirable for the successful commercialization of that product candidate. Any of these scenarios could compromise the commercial prospects for a product candidate to assure safe use of the product candidate, either as a condition of product candidate approval or on the basis of new safety information.

Should Cara resume development activities in the future, if Cara experiences delays in obtaining approval, if Cara fails to obtain approval of a product candidate or if the label for a product candidate does not include the labeling claims necessary or desirable for the successful commercialization of that product candidate, the commercial prospects for such product candidate may be harmed and Cara’s ability to generate revenues will be materially impaired.

***Should Cara resume development of its product candidate or any future product candidate, such product candidate, if approved, could be subject to labeling and other restrictions and market withdrawal and Cara may be subject to penalties if it fails to comply with regulatory requirements or experiences unanticipated problems with its product.***

Should Cara resume development of its product candidate or any future product candidate, even if marketing approval of a product candidate is granted, the approval may be subject to limitations on the indicated uses for which the product may be marketed or to the conditions of approval, including any requirement to implement a Risk Evaluation and Mitigation Strategies, or REMS. If a product candidate receives marketing approval, the accompanying label may limit the approved use of Cara’s drug, which could limit sales of the product.

The FDA or other regulatory authorities may also impose requirements for costly post-marketing studies or clinical trials and surveillance to monitor the safety or efficacy of the product. The FDA and other regulatory authorities closely regulate the post-approval marketing and promotion of drugs to ensure drugs are marketed only for the approved indications and in accordance with the provisions of the approved labeling. The FDA and other regulatory authorities impose stringent restrictions on manufacturers’ communications regarding off-label use and if Cara does not market its products for their approved indications, Cara may be subject to enforcement action for off-label marketing. Violations of the Federal Food, Drug, and Cosmetic Act or equivalent regulations outside the United States relating to the promotion of prescription drugs may lead to investigations alleging violations of federal and state health care fraud and abuse laws, as well as state consumer protection laws.

In addition, later discovery of previously unknown AEs or other problems with its products, manufacturers or manufacturing processes, or failure to comply with regulatory requirements, may yield various results, including:

- restrictions on the products, manufacturers, manufacturing facilities or manufacturing process;
- imposition of restrictions on operations, including costly new manufacturing requirements;
- restrictions on the labeling or marketing of a product;
- restrictions on product distribution or use;
- requirements to conduct post-marketing studies or clinical trials;
- warning letters;
- withdrawal of the products from the market;
- refusal to approve pending applications or supplements to approved applications that Cara submits;
- recall of products and publicity requirements;
- fines, restitution or disgorgement of profits or revenues;
- suspension or withdrawal of marketing or regulatory approvals;
- refusal to permit the import or export of Cara’s products;
- product seizure, detentions or import bans; or
- injunctions or the imposition of civil or criminal penalties.

The FDA’s or other regulatory authorities’ policies may change and additional government regulations may be enacted that could prevent, limit or delay regulatory approval of any product candidates should Cara resume development of its product candidate or any future product candidate. If Cara is slow or unable to adapt to changes in existing requirements or the adoption of new requirements or policies, or if Cara is not able to maintain regulatory compliance, Cara may lose any marketing approval that it may have obtained.

***Regulatory approval is limited by the FDA and other regulatory authorities to those specific indications and conditions for which clinical safety and efficacy have been demonstrated, and Cara may be subject to fines, penalties or injunctions if Cara is determined to be promoting the use of its products for unapproved or “off-label” uses, resulting in damage to Cara’s reputation and business.***

When the FDA or comparable foreign regulatory authorities issue regulatory approval for a product candidate, the regulatory approval is limited to those specific indications for which a product is approved. If Cara is not able to obtain FDA approval for any desired future indications for its products and product candidates, should Cara resume development of its product candidate or any future product candidate, Cara’s ability to effectively market and sell its products may be reduced and its business may be adversely affected.

While physicians may choose to prescribe drugs for uses that are not described in the product’s labeling and for uses that differ from those tested in clinical studies and approved by the regulatory authorities, Cara is prohibited from marketing and promoting the products for indications that are not specifically approved by the FDA or other regulatory authorities. These “off-label” uses are common across medical specialties and may constitute an appropriate treatment for some patients in varied circumstances. Regulatory authorities in the United States and other countries generally do not restrict or regulate the behavior of physicians in their choice of treatment within the practice of medicine. Regulatory authorities do, however, restrict communications by pharmaceutical companies on off-label use. If the FDA or other regulatory authorities determine that Cara or Cara’s commercial partners’ promotional activities constitute promotion of an off-label use, it could request that Cara modify its promotional materials. Further, off-label promotion could subject Cara to regulatory or enforcement actions by the FDA and other authorities, including issuance of warning letters or untitled letters, suspension or withdraw an approved product from the market, mandatory or voluntary recalls, civil fines, disgorgement of money, operating restrictions, additional reporting requirements and/or oversight if Cara becomes subject to a corporate integrity agreement or similar agreement, injunctions or criminal prosecution, any of which could significantly harm Cara’s business.

***Should Cara resume development of its product candidate or any future product candidate, failure to obtain marketing approval in international jurisdictions would prevent a product candidate from being marketed abroad.***

In order to market and sell products in the EU and many other jurisdictions, Cara or its collaborators or partners must obtain separate marketing approvals and comply with numerous and varying regulatory requirements. Even if Cara obtains FDA approval of a product candidate, the regulatory approval procedure varies among countries and can involve additional testing. The time required to obtain approval may differ substantially from that required to obtain FDA approval. The regulatory approval process outside the United States generally includes all of the risks associated with obtaining FDA approval. In addition, in many countries outside the United States, it is required that the product be approved for reimbursement before the product can be approved for sale in that country. Cara or these third parties may not obtain approvals from regulatory authorities outside the United States on a timely basis, if at all. Approval by the FDA does not ensure approval by regulatory authorities in other countries or jurisdictions, and approval by one regulatory authority outside the United States does not ensure approval by regulatory authorities in other countries or jurisdictions or by the FDA. However, the failure to obtain approval in one jurisdiction may compromise Cara or its collaborators’ or partners’ ability to obtain approval elsewhere. Cara or its collaborators or partners may not be able to file for marketing approvals and may not receive necessary approvals to commercialize its products in any market.

***Cara’s agreements with HCR contain various covenants and other provisions, which, if violated, could materially adversely affect Cara’s financial condition.***

During the fourth quarter of 2023, Cara, through Cara Royalty Sub, entered into the Original HCR Agreement with HCR, pursuant to which Cara Royalty Sub sold, or agreed to sell, to HCR the Royalties under the Covered License Agreements, in exchange for up to $40.0 million. Cara has retained all of its rights, title and interest in, to and under the Covered License Agreements that relate to any non-intravenous formulation of difelikefalin.

Under the terms of the Original HCR Agreement, Cara received an initial payment of $17.5 million less certain transaction costs in November 2023. In December 2023, Cara received an additional $20.0 million less certain advisory fees, upon satisfying the milestone event for pricing for Kapruvia® (difelikefalin) in Germany being approved above a certain threshold amount per dose. The terms of the Original HCR Agreement also provide for an additional $2.5 million milestone payment to Cara Royalty Sub upon achievement of a 2024 sales milestone of KORSUVA in Japan, which was achieved in the fourth quarter of 2024 and is expected to be paid in the first quarter of 2025.

On December 17, 2024, the Sellers entered into the APA with CSL Vifor, pursuant to which, at the consummation of the transaction, Sellers will sell to CSL Vifor and CSL Vifor will acquire from Sellers certain assets and rights for the development, manufacture and commercialization of difelikefalin as well as certain associated liabilities, or the Asset Disposition, for a purchase price of $900,000 (subject to certain adjustments with respect to inventory). Pursuant to the APA, in connection with the consummation of the Asset Disposition, CSL Vifor and HCR have entered into a letter agreement with Cara providing that CSL Vifor and HCR will, subject to the satisfaction of conditions to closing under the APA, enter into an amended and restated purchase agreement to amend and replace the Original HCR Agreement. Upon entering into the amended and restated purchase agreement, effective as of the closing of the Asset Disposition: (i) CSL Vifor will be obligated to make certain payments to HCR from and after the date thereof relating to certain revenue and/or royalties from difelikefalin, (ii) each of the Contribution Agreement, the License Agreement and the Pledge Agreement (each as defined in the Original HCR Agreement) shall be terminated, and (iii) Sellers shall have no further payment or other obligations to HCR under the Original HCR Agreement. Additionally, pursuant to the APA, at the consummation of the Asset Disposition, Cara has agreed to pay CSL Vifor $3.0 million to compensate CSL Vifor for the estimated incremental future expenses to be incurred by CSL Vifor as a result of the transfer of the assets to be acquired and the liabilities to be assumed by it in connection with the Asset Disposition.

The Asset Disposition is subject to certain conditions to closing, including either (i) the consummation of the Merger concurrently with the Asset Disposition or (ii) the receipt of the requisite stockholder approval needed to approve the Asset Disposition in the event that the Merger is terminated. The APA provides for certain termination rights of Sellers and CSL Vifor, including the right of either CSL Vifor or Cara to terminate the APA if (a) there is a permanent and nonappealable prohibition on the consummation of the Asset Disposition, (b) the Asset Disposition has not occurred by June 30, 2025 (which date shall be automatically extended in one-month increments until October 30, 2025 in certain instances if the Merger is not closed by June 30, 2025) or (c) if a meeting of Cara’s stockholders has been held for the stockholders to consider and vote upon the APA and the Asset Disposition and the stockholders have not voted in favor of adopting the APA and approving the Asset Disposition at such stockholder meeting. Either party may also terminate the APA if the other party breaches its obligations under the APA in certain instances and subject to customary cure protections. The APA contains representations, warranties, and covenants of the parties, including, among others, a covenant that requires (i) Sellers to operate their business in the ordinary course during the period between the execution of the APA and consummation of the Asset Disposition and to not engage in certain kinds of activities or transactions during such period (subject to either prior consent of CSL Vifor or customary limited exceptions), (ii) the parties to use their reasonable best efforts to complete certain transition steps in connection with the consummation of the Asset Disposition, and (iii) Sellers to use their commercially reasonable efforts to obtain any needed consents and provide any needed notices in connection with the Asset Disposition.

If the above transactions are not approved/consummated, the Original HCR Agreement will automatically expire, and the payment of Royalties to HCR will cease, when HCR has received payments of Royalties equal to two times the aggregate amount of payments made by HCR under the Original HCR Agreement if achieved on or prior to December 31, 2029, or 2.8 times the aggregate amount of payments made by HCR under the Original HCR Agreement, if the 2029 Threshold is not achieved on or prior to December 31, 2029. In the event of a change of control, Cara Royalty Sub will pay to HCR an amount equal to 2.8 times the aggregate amount of payments made by HCR less the total net amounts paid by Cara Royalty Sub to HCR as of the effective date of control. In certain situations, Cara Royalty Sub would not be obligated to pay the change of control payment to HCR. After the Original HCR Agreement expires, all rights to receive the Royalties return to Cara Royalty Sub.

In connection with the HCR Agreement, Cara entered into a Contribution and Servicing Agreement which contains various representations and warranties, covenants, indemnification obligations and other provisions related to the contribution of the Covered License Agreement to Cara Royalty Sub and its maintenance and servicing obligations with respect to the Royalties and the Covered License Agreements. In the event Cara violates these covenants or provisions, Cara may lose the right to act as the servicer of Cara Royalty Sub and a third-party servicer may be appointed at Cara Royalty Sub’s expense. Cara’s replacement as servicer, if it were to occur, could have a material adverse effect on Cara’s financial condition as HCR, by virtue of owning Cara Royalty Sub, would own the Royalties.

In connection with the Original HCR Agreement, Cara also entered into a Pledge and Security Agreement containing various representations, warranties and covenants, and a limited recourse guaranty of Cara Royalty Sub’s obligations under the Purchase and Sale Agreement which is secured by the pledge in favor of HCR all of the capital stock of Cara Royalty Sub. HCR is entitled to foreclose on the capital stock of Cara Royalty Sub following the occurrence of certain remedies events, including, without limitation, a bankruptcy of Cara or the failure of Cara to perform its obligations under the Contribution and Servicing Agreement. Such foreclosure, if it were to occur, could have a material adverse effect on Cara’s financial condition as HCR, by virtue of owning Cara Royalty Sub, would own the Royalties.

***Cara’s information systems, or those of others upon whom Cara relies (such as Cara’s CROs, contract manufacturers, contractors, consultants, service providers, collaborators and others) may fail or suffer cybersecurity breaches, loss or leakage of data or other disruptions, which could result in a material disruption of Cara’s development programs, compromise sensitive information related to Cara’s business, or prevent Cara from accessing critical information, potentially exposing Cara to liability that could adversely affect Cara’s business.***

Cara is increasingly dependent upon information systems, infrastructure and data to operate its business. In the ordinary course of business, Cara collects, stores, transmits and otherwise processes confidential information (including but not limited to intellectual property, proprietary business information and personal data). Cara also has outsourced elements of its operations to third parties, and as a result Cara manages a number of service providers who have access to its data and information systems and infrastructure. Cara’s reliance on service providers could introduce new cybersecurity risks and vulnerabilities, including supply-chain attacks, and other threats to Cara’s business operations. Cara relies on service providers and technologies to operate critical business systems to process sensitive data in a variety of contexts, including, without limitation, cloud-based infrastructure, data center facilities, encryption and authentication technology, personnel email, and other functions. Cara also relies on third-party service providers to provide other products, services, parts, or otherwise to operate its business. Cara’s ability to monitor these third parties’ information security practices is limited, and these third parties may not have adequate information security measures in place. If Cara’s third-party service providers experience a security incident or other interruption, Cara could experience adverse consequences. While Cara may be entitled to damages if its third-party service providers fail to satisfy their privacy or security-related obligations to Cara, any award may be insufficient to cover Cara’s damages, or Cara may be unable to recover such award. In addition, supply-chain attacks have increased in frequency and severity, and Cara cannot guarantee that third parties’ infrastructure in Cara’s supply chain or its third-party partners’ supply chains have not been compromised.

Cybersecurity risks have significantly increased in recent years in part because of the proliferation of new technologies, the use of the internet and telecommunication technologies to conduct financial transactions, especially as personnel are working remotely, and the increased sophistication and activities of organized crime, hackers, terrorists, nation-states and other external parties. To the extent that any disruption or cybersecurity breach were to result in a loss of, or damage to, Cara’s data or information systems, or inappropriate disclosure of confidential or proprietary information, Cara could incur liability and reputational damage and, should Cara resume development of its product candidate or any future product candidate, the further development of such product candidates could be delayed.

Some actors now engage and are expected to continue to engage in cyberattacks, including without limitation nation-state actors for geopolitical reasons and in conjunction with military conflicts and defense activities. During times of war and other major conflicts, Cara, and the third parties upon which Cara relies, may be vulnerable to a heightened risk of these attacks, including retaliatory cyberattacks, that could materially disrupt its systems and operations, supply chain, and ability to produce, sell and distribute Cara’s goods and services. In particular, severe ransomware attacks are becoming increasingly prevalent and can lead to significant interruptions in Cara’s operations, ability to provide its products or services, loss of sensitive data and income, reputational harm, and diversion of funds. Extortion payments may alleviate the negative impact of a ransomware attack, but Cara may be unwilling or unable to make such payments due to, for example, applicable laws or regulations prohibiting such payments.

Cara and the third parties upon which Cara relies are subject to a variety of evolving threats, including but not limited to social-engineering attacks (including through deep fakes, which may be increasingly more difficult to identify as fake, and phishing attacks), malicious code (such as viruses and worms), malware (including as a result of advanced persistent threat intrusions), denial-of-service attacks, credential stuffing, credential harvesting, personnel misconduct or error, ransomware attacks, supply-chain attacks, software bugs, server malfunctions, software or hardware failures, loss of data or other information technology assets, adware, attacks enhanced or facilitated by AI, telecommunications failures, earthquakes, fires, floods, and other similar threats. Additionally, future or past business transactions (such as acquisitions or integrations) could expose Cara to additional cybersecurity risks and vulnerabilities, as Cara’s systems could be negatively affected by vulnerabilities present in acquired or integrated entities’ systems and technologies. Furthermore, Cara may discover security issues that were not found during due diligence of such acquired or integrated entities, and it may be difficult to integrate companies into Cara’s information technology environment and security program.

While Cara has implemented security measures designed to protect against security incidents, there can be no assurance that these measures will be effective. Cara takes steps designed to detect, mitigate, and remediate vulnerabilities in its information systems (such as its hardware and/or software, including that of third parties upon which Cara relies). Cara may not, however, detect and remediate all such vulnerabilities including on a timely basis. Further, Cara may experience delays in developing and deploying remedial measures and patches designed to address identified vulnerabilities. Vulnerabilities could be exploited and result in a security incident.

Any of the previously identified or similar threats could cause a security incident or other interruption that could result in unauthorized, unlawful, or accidental acquisition, modification, destruction, loss, alteration, encryption, disclosure of, or access to Cara’s sensitive data or Cara’s information technology systems, or those of the third parties upon whom Cara relies. A security incident or other interruption could disrupt Cara’s ability (and that of third parties upon whom Cara relies) to provide its services.

Cara may expend significant resources or modify its business activities to try to protect against security incidents. Additionally, certain data privacy and security obligations may require Cara to implement and maintain specific security measures or industry-standard or reasonable security measures to protect its information technology systems and sensitive data.

Applicable data privacy and security obligations may require Cara to notify relevant stakeholders, including affected individuals, customers, regulators, and investors, of security incidents. Such disclosures are costly, and the disclosure or the failure to comply with such requirements could lead to adverse consequences.

If Cara (or a third party upon whom Cara relies) experiences a security incident or is perceived to have experienced a security incident, it may experience material adverse consequences, such as government enforcement actions (for example, investigations, fines, penalties, audits, and inspections); additional reporting requirements and/or oversight; restrictions on processing sensitive data (including personal data); litigation (including class claims); indemnification obligations; negative publicity; reputational harm; monetary fund diversions; diversion of management attention; interruptions in Cara’s operations (including development and commercialization of any product candidate, should Cara resume development activities in the future, if approved, and availability of data); financial loss; and other similar harms. Security incidents and attendant material consequences may prevent or cause customers to stop using Cara’s services, deter new customers from using Cara’s services, and negatively impact Cara’s ability to grow and operate its business.

Cara’s contracts may not contain limitations of liability, and even where they do, there can be no assurance that limitations of liability in its contracts are sufficient to protect Cara from liabilities, damages, or claims related to Cara’s data privacy and security obligations. Cara cannot be sure that its insurance coverage will be adequate or sufficient to protect it from or to mitigate liabilities arising out of Cara’s privacy and security practices, that such coverage will continue to be available on commercially reasonable terms or at all, or that such coverage will pay future claims.

### Risks Related to Cara’s Dependence on Third Parties

***Any collaboration arrangements that Cara is a party to or may enter into in the future may not be successful, which, should Cara resume development activities, could adversely affect Cara’s ability to develop and ultimately commercialize its product candidate or any potential future product candidate.***

Cara’s business model in the past has been to develop and commercialize product candidates in the United States and generally to seek collaboration arrangements with pharmaceutical or biotechnology companies for the development or commercialization of product candidates in the rest of the world. Cara currently has license agreements with Maruishi and CKDP for the intravenous and oral formulations of difelikefalin, as well as license agreements with respect to its commercially approved products, KORSUVA Injection and Kapruvia with CSL Vifor. Should Cara resume development activities, in addition to its existing agreements, Cara may enter into additional collaboration arrangements in the future on a selective basis. Cara’s existing collaborations and future collaboration arrangements may not be successful. The success of Cara’s existing and future collaboration arrangements will depend heavily on the efforts and activities of its collaborators.

Collaborators generally have significant discretion in determining the efforts and resources that they will apply to these collaboration arrangements. Disagreements between parties to a collaboration arrangement regarding clinical development and commercialization matters can lead to delays in the development process or commercializing the applicable product candidate and, in some cases, termination of the collaboration arrangement. These disagreements can be difficult to resolve if neither of the parties has final decision-making authority.

Collaborations with pharmaceutical companies and other third parties often are terminated or allowed to expire by the other party. Maruishi may terminate its agreement with Cara at will, and CKDP may terminate its agreement with Cara in certain circumstances relating to patent invalidity or unenforceability or generic entry by a third party, as further described in “*Management’s Discussion and Analysis of Financial Condition and Results of Operations - Collaboration and License Agreements.”* Any such termination or expiration could adversely affect Cara financially and could harm Cara’s business reputation. Cara’s current collaborations and any future collaborations Cara might enter into, including related to development of Cara’s product candidate or any future product candidate should Cara resume development activities in the future, may pose a number of risks, including the following:

- collaborators may not perform their obligations as expected;
- collaborators may not pursue development and commercialization of Cara’s product or any product candidate that achieves regulatory approval or may elect not to continue or renew development or commercialization programs based on clinical trial results, changes in the collaborators’ strategic focus or available funding that divert resources or create competing priorities;
- collaborators may delay clinical trials, provide insufficient funding for a clinical trial program, stop a clinical trial or abandon a product candidate, repeat or conduct new clinical trials or require a new formulation of a product candidate for clinical testing;
- collaborators could fail to make timely regulatory submissions for a product or product candidate;
- collaborators may not comply with all applicable regulatory requirements or may fail to report safety data in accordance with all applicable regulatory requirements;
- collaborators could independently develop, or develop with third parties, products that compete directly or indirectly with Cara’s products or product candidates if the collaborators believe that competitive products are more likely to be successfully developed or can be commercialized under terms that are more economically attractive than Cara’s;
- product candidates discovered in collaboration with Cara may be viewed by Cara’s collaborators as competitive with their own product candidates or products, which may cause collaborators to cease to devote resources to the commercialization of any potential product candidates;
- a collaborator with marketing and distribution rights to one or more of Cara’s products or product candidates that achieve regulatory approval may not commit sufficient resources to the marketing and distribution of such product or products;
- disagreements with collaborators, including disagreements over proprietary rights, contract interpretation or the preferred course of development, might cause delays or termination of the research, development or commercialization of products and product candidates, might lead to additional responsibilities for Cara with respect to products and product candidates, or might result in litigation or arbitration, any of which would be time-consuming and expensive;
- collaborators may not properly maintain or defend Cara’s intellectual property rights or may use Cara’s proprietary information in such a way as to invite litigation that could jeopardize or invalidate Cara’s intellectual property or proprietary information or expose Cara to potential litigation;
- collaborators may infringe the intellectual property rights of third parties, which may expose Cara to litigation and potential liability; and
- collaborations, including Cara’s collaboration with Maruishi, may be terminated for the convenience of the collaborator and, if terminated, Cara could be required to raise additional capital to pursue further development or commercialization of the applicable product candidate.

If Cara’s current collaborations or any other collaborations Cara might enter into in the future, including related to development of its product candidate or any future product candidate should Cara resume development activities in the future, do not result in the successful development and commercialization of products or if one of Cara’s collaborators terminates its agreement with Cara, Cara may not receive any future research funding or milestone or royalty payments under the collaboration. If Cara does not receive the funding it expects under these agreements, Cara’s development of potential product candidates could be delayed and Cara may need additional resources to develop a product candidate and product platform. All of the risks relating to Cara’s product development, regulatory approval and commercialization described in this Annual Report on Form 10-K also apply to the activities of Cara’s collaborators in their respective jurisdictions.

Additionally, if any current or future collaborator of Cara, including related to development of Cara’s product candidate or any future product candidate should Cara resume development activities in the future, is involved in a business combination, the collaborator might deemphasize or terminate development or commercialization of any product candidate licensed to it by Cara. If one of Cara’s collaborators terminates its agreement with Cara, Cara may find it more difficult to attract new collaborators and Cara’s reputation in the business and financial communities could be adversely affected.

If Cara determines to collaborate in the future with additional pharmaceutical or biotechnology companies for the development and potential commercialization of oral difelikefalin or any potential future product candidate, should Cara resume development activities in the future, Cara would face significant competition in seeking appropriate collaborators. Cara’s ability to reach a definitive agreement for collaboration will depend, among other things, upon Cara’s assessment of the collaborator’s resources and expertise, the terms and conditions of the proposed collaboration and the proposed collaborator’s evaluation of a number of factors. If Cara is unable to reach agreements with suitable collaborators on a timely basis, on acceptable terms, or at all, Cara may have to curtail the development of a product candidate, reduce or delay its development program or one or more of Cara’s other development programs, delay its potential commercialization or reduce the scope of any sales or marketing activities, or increase Cara’s expenditures and undertake development or commercialization activities at Cara’s own expense. If Cara elects to fund and undertake development or commercialization activities on its own, Cara may need to obtain additional expertise and additional capital, which may not be available to Cara on acceptable terms or at all. If Cara fails to enter into collaborations and does not have sufficient funds or expertise to undertake the necessary development and commercialization activities, Cara may not be able to further develop product candidates or bring them to market or to develop a product platform or successfully commercialize Cara’s products and business may be materially and adversely affected.

### Risks Related to Legal and Compliance Matters

***If Cara fails to comply with federal and state healthcare laws, including fraud and abuse, and transparency laws, Cara could face substantial penalties and its business, results of operations, financial condition and prospects could be adversely affected.***

As a pharmaceutical company, even though Cara does not and will not control referrals of healthcare services or bill directly to Medicare, Medicaid or other third-party payers, certain federal and state healthcare laws and regulations pertaining to fraud and abuse, transparency and patients’ rights may be applicable to Cara’s business. The healthcare laws and regulations that may affect Cara’s ability, and its partners’ and collaborators’ ability, to operate include, but are not limited to:

- the federal Anti-Kickback Statute, which regulates, among other things, Cara’s marketing practices, educational programs, pricing policies, and relationships with healthcare providers or other entities, by prohibiting, among other things, any person or entity from knowingly and willfully soliciting, receiving, offering or paying any remuneration, directly or indirectly, overtly or covertly, in cash or in kind, to induce, or in return for, the purchase, recommendation, lease, order or furnishing of an item or service reimbursable, in whole or in part, under a federal healthcare program, such as the Medicare and Medicaid programs;
- federal civil and criminal false claims laws, including without limitation the federal civil False Claims Act, and civil monetary penalties law, which prohibit, among other things, individuals or entities from knowingly presenting, or causing to be presented, false or fraudulent claims for payment or approval from a federal health care program (including Medicare and Medicaid);
- Federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, which created additional

federal criminal statutes that prohibit, among other things, knowingly and willfully executing, or attempting to execute, a scheme to defraud any healthcare benefit program or to obtain, by means of false or fraudulent pretenses, representations, or promises, any of the money or property owned by, or under the custody or control of, any health care benefit program, regardless of the payer (e.g., public or private) and knowingly and willfully falsifying, concealing, or covering up by any trick, scheme or device a material fact or making any materially false statements in connection with the delivery of, or payment for, health care benefits, items or services relating to healthcare matters;

- federal transparency laws, including the federal Physician Payments Sunshine Act, that requires certain manufacturers of drugs, devices, biologics, and medical supplies for which payment is available under Medicare, Medicaid, or the Children’s Health Insurance Program to report annually to the Centers for Medicare & Medicaid Services, or CMS, information related to payments and other transfers of value provided to physicians (defined to include doctors of medicine, dentists, optometrists, podiatrists and chiropractors), other healthcare professionals (such as physician assistants and nurse practitioners), and teaching hospitals, and applicable manufacturers and group purchasing organizations to report annually to CMS ownership and investment interests held by physicians and their immediate family members;
- state law equivalents of each of the above federal laws, such as anti-kickback and false claims laws which may apply to items or services reimbursed by any third-party payer, including commercial insurers;
- state laws that require pharmaceutical companies to comply with the pharmaceutical industry’s voluntary compliance guidelines and the relevant compliance guidance promulgated by the federal government, or otherwise restrict payments that may be made to healthcare providers and other potential referral sources;
- state laws that require drug manufacturers to report information related to the pricing of certain drugs, as well as payments and other transfers of value to physicians and other healthcare providers or marketing expenditures; and
- state and local laws that require the registration of pharmaceutical sales representatives, many of which differ from each other in significant ways and may not have the same effect, thus complicating compliance efforts.

Because of the breadth of these laws and the narrowness of the statutory exceptions and regulatory safe harbors available under these laws, it is possible that some of Cara’s business activities could be subject to challenge under one or more of such laws. Pharmaceutical and other healthcare companies continue to be prosecuted under the federal false claims laws for numerous activities, including those related to research, sales, marketing and promotional programs. In addition, recent health care reform legislation has strengthened these laws. For example, the Patient Protection and Affordable Care Act of 2010, as amended by the Health Care and Education Reconciliation Act of 2010, or the Health Care Reform Law, among other things, amends the intent requirement of the federal Anti-Kickback Statute and certain other criminal healthcare fraud statutes. As a result, a person or entity no longer needs to have actual knowledge of these statutes or specific intent to violate them in order to commit a violation. Moreover, the Health Care Reform Law provides that the government may assert that a claim including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the federal civil False Claims Act. To the extent that any product Cara makes is sold in a foreign country, Cara may be subject to similar foreign laws and regulations. If Cara or its operations are found to be in violation of any of the laws described above or any other governmental regulations that apply to it, Cara may be subject to significant penalties, including administrative, civil and criminal penalties, damages, fines, disgorgement, exclusion from participation in U.S. federal or state health care programs, contractual damages, reputational harm, imprisonment, diminished profits and future earnings, additional reporting requirements and/or oversight if Cara becomes subject to a corporate integrity agreement or similar agreement to resolve allegations of non-compliance with these laws, and the curtailment or restructuring of Cara’s operations, any of which could materially adversely affect Cara’s ability to operate its business and its financial results. Although an effective compliance program can mitigate the risk of investigation and prosecution for violations of these laws, the risks cannot be entirely eliminated. Any action against Cara for violation of these laws, even if Cara successfully defends against it, could cause Cara to incur significant legal expenses and divert Cara management’s attention from the operation of its business. Moreover, achieving and sustaining compliance with applicable federal and state transparency and fraud and abuse laws may prove costly. If any of the physicians or other healthcare providers or entities with whom Cara does business, including its partners or collaborators, is found not to be in compliance with applicable laws, it may be subject to significant criminal, civil or administrative sanctions, including but not limited to, exclusions from participation in government healthcare programs, which could also materially affect Cara’s business.

***Cara is subject to stringent and evolving U.S. and foreign laws, regulations and standards, contracts, industry standards, policies and other obligations related to data privacy and security. Cara’s actual or perceived failure to comply with such obligations could lead to regulatory investigations or actions, litigation (including class claims) and mass arbitration demands, fines and penalties, disruptions of Cara’s business operations, reputational harm, loss of revenue and profits, and otherwise adversely affect Cara’s business, operations and financial performance.***

Cara is subject to or affected by numerous domestic (both federal and state) and foreign laws and regulations, as well as regulatory guidance, contracts, industry standards, policies and other obligations governing the collection, use, disclosure, retention, security and other processing of personal data, such as information that Cara collects about participants and healthcare providers in connection with clinical trials in the United States and abroad. Obligations related to data privacy and security (and consumers’ data privacy expectations) are quickly changing, becoming increasingly stringent, and creating uncertainty. Additionally, these obligations may be subject to differing applications and interpretations, which may be inconsistent or conflict among jurisdictions. This evolving global data protection landscape may create uncertainty in Cara’s business, affect Cara’s or its service providers’ ability to operate in certain jurisdictions or to collect, store, transfer use, share and otherwise personal data, result in liability or impose additional costs on Cara. The cost of compliance with these obligations is high and is likely to increase in the future and may necessitate changes to Cara’s operations and to those of third parties that process personal data on its behalf. In many jurisdictions, enforcement actions and consequences for noncompliance are rising.

In the United States, HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act of 2009, or HITECH, imposes certain requirements relating to the privacy, security and transmission of individually identifiable health information without appropriate authorization by entities subject to the rule, including health plans, healthcare clearinghouses, certain healthcare providers, and their business associates and covered subcontractors that perform services for them that involve the creation, use, maintenance or disclosure of, individually identifiable health information. In the event Cara is subject to HIPAA and Cara or its business associates or subcontractors fail to properly maintain the privacy and security of certain individually identifiable health information, or Cara or its business associates or subcontractors are responsible for an inadvertent disclosure or security breach of such individually identifiable health information, Cara could be subject to enforcement measures, including civil and criminal penalties and fines for violations of state and federal privacy or security standards, such as HIPAA and HITECH, and their respective implementing regulations.

Additionally, certain states have adopted their own privacy and security laws and regulations for health information, some of which may be more stringent than HIPAA.

In the past few years, numerous U.S. states, following California’s enactment of the CCPA - including Virginia, Colorado, Connecticut, and Utah-have enacted comprehensive privacy laws that impose certain obligations on covered businesses, including providing specific disclosures in privacy notices and affording residents with certain rights concerning their personal data. As applicable, such rights may include the right to access, correct, or delete certain personal data, and to opt-out of certain data processing activities, such as targeted advertising, profiling, and automated decision-making. To the extent that Cara is or may become subject to these laws, the exercise of these rights may impact Cara’s business and ability to provide its products and services. Similar laws are being considered in several other states, as well as at the federal and local levels, and Cara expects more states to pass similar laws in the future. These state laws may allow for statutory fines for noncompliance and private rights of action. While some of these laws may exempt some data processed in the context of clinical trials, these developments further complicate compliance efforts, and increase legal risk and compliance costs for Cara, and the third parties upon whom Cara relies. For example, Washington’s My Health My Data Act (“MHMD”) broadly defines consumer health data, places restrictions on processing consumer health data (including imposing stringent consent requirements), provides consumers certain rights with respect to their health data, and creates a private right of action to allow individuals to sue for violations of the law.

Outside the United States, an increasing number of laws, regulations, and industry standards govern data privacy and security. For example, the EU GDPR and the UK GDPR impose strict requirements for processing personal data. GDPR may increase compliance burdens on Cara, including by mandating potentially burdensome documentation requirements and granting certain rights to individuals to control how Cara collects, uses, discloses, retains and otherwise processes personal data. The processing of sensitive personal data, such as physical health conditions, may also be subject to heightened compliance burdens under the GDPR. Under the GDPR, companies may face temporary or definitive bans on data processing and other corrective actions; fines of up to 20 million Euros under the EU GDPR, 17.5 million pounds sterling under the UK GDPR or, in each case, 4% of annual global revenue, whichever is greater; or private litigation related to processing of personal data brought by classes of data subjects or consumer protection organizations authorized at law to represent their interests.

In addition, Cara may be unable to transfer personal data from Europe and other jurisdictions to the United States or other countries due to data localization requirements or limitations on cross-border data flows. Europe and other jurisdictions have enacted laws requiring data to be localized or limiting the transfer of personal data to other countries. In particular, the European Economic Area (EEA) and the United Kingdom (UK) have significantly restricted the transfer of personal data to the United States and other countries whose privacy laws it generally believes are inadequate. Other jurisdictions may adopt similarly stringent interpretations of their data localization and cross-border data transfer laws. Although there are currently various mechanisms that may be used to transfer personal data from the EEA and UK to the United States in compliance with law, such as the EEA’s standard contractual clauses, the UK’s International Data Transfer Agreement/Addendum, and the EU-U.S. Data Privacy Framework and the UK extension thereto (which allows for transfers to relevant U.S.-based organizations who self-certify compliance and participate in the Framework), these mechanisms are subject to legal challenges, and there is no assurance that Cara can satisfy or rely on these measures to lawfully transfer personal data to the United States. If there is no lawful manner for Cara to transfer personal data from the EEA, the UK, or other jurisdictions to the United States, or if the requirements for a legally-compliant transfer are too onerous, Cara could face significant adverse consequences, including the interruption or degradation of its operations, the need to relocate part of or all of its business or data processing activities to other jurisdictions (such as Europe) at significant expense, increased exposure to regulatory actions, substantial fines and penalties, the inability to transfer data and work with partners, vendors and other third parties, and injunctions against its processing or transferring of personal data necessary to operate its business. Additionally, companies that transfer personal data out of the EEA and UK to other jurisdictions, particularly to the United States, are subject to increased scrutiny from regulators, individual litigants, and activities groups. Some European regulators have ordered certain companies to suspend or permanently cease certain transfers of personal data out of Europe for allegedly violating the GDPR’s cross-border data transfer limitations. Regulators in the United States are also increasingly scrutinizing certain personal data transfers and have proposed and enacted certain data transfer requirements or prohibitions, for example, the Biden Administration’s executive order Preventing Access to Americans’ Bulk Sensitive Personal Data and United States Government-Related Data by Countries of Concern.

In addition to data privacy and security laws, Cara is or may become contractually subject to industry standards adopted by industry groups. Cara is also bound by other contractual obligations related to data privacy and security, and Cara’s efforts to comply with such obligations may not be successful.

Cara publishes privacy policies, marketing materials, and other statements, such as compliance with certain certifications or self-regulatory principles, regarding data privacy and security. If these policies, materials or statements are found to be deficient, lacking in transparency, deceptive, unfair, or misrepresentative of Cara’s practices, Cara may be subject to investigation, enforcement actions by regulators, or other adverse consequences.

Cara may at times fail (or be perceived to have failed) in its efforts to comply with its data privacy and security obligations. Moreover, despite Cara’s efforts, its personnel or third parties on whom it relies may fail to comply with such obligations, which could negatively impact Cara’s business operations. If Cara or the third parties on which Cara relies fail, or are perceived to have failed, to address or comply with applicable data privacy and security obligations, Cara could face significant consequences, including but not limited to: government enforcement actions (e.g., investigations, fines, penalties, audits, inspections, and similar); litigation (including class-action claims) and mass arbitration demands; additional reporting requirements and/or oversight; bans on processing personal data; orders to destroy or not use personal data; and imprisonment of company officials. In particular, plaintiffs have become increasingly more active in bringing privacy-related claims against companies, including class claims and mass arbitration demands. Some of these claims allow for the recovery of statutory damages on a per violation basis, and, if viable, carry the potential for monumental statutory damages, depending on the volume of data and the number of violations. Any of these events could have a material adverse effect on Cara’s reputation, business, or financial condition, including but not limited to: loss of customers; interruptions or stoppages in Cara’s business operations (including, as relevant, clinical trials should Cara resume development activities in the future); inability to process personal data or to operate in certain jurisdictions; limited ability to develop or commercialize Cara’s products; expenditure of time and resources to defend any claim or inquiry; adverse publicity; or substantial changes to Cara’s business model or operations.

***Cara is subject to recent legislation, regulatory proposals and healthcare payer initiatives that may increase Cara’s costs of compliance and adversely affect Cara’s ability to market its products, obtain collaborators and raise capital.***

In March 2010, the Health Care Reform Law was signed into law, which includes provisions that have changed, and likely will continue to change, health care financing and the delivery of health care in the United States.

There have been executive, judicial, and Congressional challenges and amendments to certain aspects of the Health Care Reform Law. For example, on August 16, 2022, the Inflation Reduction Act of 2022, or IRA, was signed into law, which among other things, extends enhanced subsidies for individuals purchasing health insurance coverage in Health Care Reform Law marketplaces through plan year 2025. The IRA also eliminates the “donut hole” under the Medicare Part D program beginning in 2025 by significantly lowering the beneficiary maximum out-of-pocket cost and creating a new manufacturer discount program. It is also unclear how any such challenges and the healthcare reform measures of the Trump administration will impact the Health Care Reform Law and Cara’s business.

In addition, other legislative changes have been proposed and adopted since the Health Care Reform Law was enacted. These changes include, among other things, aggregate reductions to Medicare payments to providers of up to 2% per fiscal year, which went effective on April 1, 2013, and, due to subsequent legislative amendments, will remain in effect until 2032, unless additional Congressional action is taken. Additionally, on March 11, 2021, President Biden signed the American Rescue Plan Act of 2021 into law, which eliminates the statutory Medicaid drug rebate cap, currently set at 100% of a drug’s average manufacturer price, for single source and innovator multiple source drugs, beginning January 1, 2024. These new laws may result in additional reductions in Medicare and other healthcare funding, which could have a material adverse effect on customers for Cara’s drugs, if approved, and, accordingly, Cara’s financial operations. Further, Congress is considering additional health reform measures.

Cara expects that the Health Care Reform Law, as well as other federal and state healthcare reform measures that may be adopted in the future, may result in more rigorous coverage criteria and in additional downward pressure on the price that Cara receives for KORSUVA injection or any approved product candidate, should Cara resume development of its product candidate or any future product candidate. Any reduction in reimbursement from Medicare or other government healthcare programs may result in a similar reduction in payments from private payers. In addition, there have been several recent U.S. Presidential executive orders, Congressional inquiries and proposed and enacted federal and state legislation designed to, among other things, bring more transparency to drug pricing, review the relationship between pricing and manufacturer patient programs, reduce the cost of drugs under Medicare, and reform government program reimbursement methodologies for drugs. For example, the IRA, among other things, (1) directs the U.S. Department of Health and Human Services, or HHS, to negotiate the price of certain high-expenditure single-source drugs covered under Medicare that have been on the market for at least 7 years, or the Medicare Drug Price Negotiation Program, and (2) imposes rebates under Medicare Part B and Medicare Part D to penalize price increases that outpace inflation. These provisions take effect progressively starting in fiscal year 2023. On August 29, 2023, HHS announced the list of the first ten drugs that will be subject to price negotiations, although the Medicare Drug Price Negotiation Program is currently subject to legal challenges. On January 17, 2025, HHS selected fifteen additional products covered under Part D for price negotiation in 2025. Each year thereafter more Part B and Part D products will become subject to the Medicare Drug Price Negotiation Program.

Further, on December 7, 2023, the Biden administration announced an initiative to control the price of prescription drugs through the use of march-in rights under the Bayh-Dole Act. On December 8, 2023, the National Institute of Standards and Technology published for comment a Draft Interagency Guidance Framework for Considering the Exercise of March-In Rights which for the first time includes the price of a product as one factor an agency can use when deciding to exercise march-in rights. While march-in rights have not previously been exercised, it is uncertain if that will continue under the new framework. At the state level, legislatures have increasingly passed legislation and implemented regulations designed to control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, and, in some cases, to encourage importation from other countries and bulk purchasing. For example, on January 5, 2024, the FDA approved Florida’s Section 804 Importation Program (SIP) proposal to import certain drugs from Canada for specific state healthcare programs. It is unclear how this program will be implemented, including which drugs will be chosen, and whether it will be subject to legal challenges in the United States or Canada. Other states have also submitted SIP proposals that are pending review by the FDA. Any such approved importation plans, when implemented, may result in lower drug prices for products covered by those programs. The implementation of cost containment measures or other healthcare reforms may prevent Cara from being able to generate revenue, attain profitability or commercialize its drugs.

Legislative and regulatory proposals have been made to expand post-approval requirements and restrict sales and promotional activities for drugs. Cara cannot be sure whether additional legislative changes will be enacted, particularly in light of the recent U.S. Presidential and Congressional elections, or whether the FDA regulations, guidance or interpretations will be changed, or what the impact of such changes on the marketing approvals of Cara’s product candidates, if any, may be, should Cara resume development activities in the future. In addition, increased scrutiny by the U.S. Congress of the FDA’s approval process may significantly delay or prevent marketing approval, as well as subject Cara to more stringent product labeling and post-marketing testing and other requirements. Moreover, the Drug Supply Chain Security Act imposes obligations on manufacturers of pharmaceutical products, among others, related to product tracking and tracing.

Legislation and regulations that, among other things, reduce drug prices or require the implementation of costly compliance measures could result in decreased net revenues from Cara’s pharmaceutical products and decrease potential returns from Cara’s development efforts, and Cara cannot predict what legislation will be enacted in the future.

***Governments outside the United States tend to impose strict price controls, which may adversely affect Cara’s revenues, if any.***

In international markets, reimbursement and health care payment systems vary significantly by country, and many countries have instituted price ceilings on specific products and therapies. In some countries, particularly the countries of the EU, the pricing of prescription pharmaceuticals is subject to governmental control. In these countries, pricing negotiations with governmental authorities can take considerable time after the receipt of marketing approval for a product. Should Cara resume development activities in the future, to obtain coverage and reimbursement or pricing approval in some countries, Cara may be required to conduct a clinical trial that compares the cost-effectiveness of a product candidate to other available therapies. There can be no assurance that Cara’s products will be considered cost-effective by third-party payers, that an adequate level of reimbursement will be available or that the third-party payers’ reimbursement policies will not adversely affect Cara’s ability to sell its products profitably. If reimbursement of Cara’s products is unavailable or limited in scope or amount, or if pricing is set at unsatisfactory levels, Cara’s business could be harmed, possibly materially.

***Cara’s employees, independent contractors, consultants, and commercial partners may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements, which could have a material adverse effect on Cara’s business.***

Cara is exposed to the risk of fraud or other misconduct by its employees, independent contractors, consultants and commercial partners. Misconduct by such individuals could include inadvertent or intentional failures to:

- comply with FDA regulations and other similar foreign regulations;
- provide true, complete and accurate information to the FDA;
- comply with manufacturing standards;
- comply with federal and state data privacy, security, fraud and abuse and other healthcare laws and regulations in the United States and similar foreign laws;
- report financial information or data accurately; or
- disclose unauthorized activities to Cara.

In particular, the promotion, sales and marketing of healthcare items and services, as well as certain business arrangements in the healthcare industry, are subject to extensive laws and regulations intended to prevent fraud, misconduct, kickbacks, self-dealing and other abusive practices. These laws and regulations may restrict or prohibit a wide range of pricing, discounting, marketing and promotion, including off label uses of Cara’s products, structuring and commission(s), certain customer incentive programs, patient assistance programs, and other business arrangements generally. Third party misconduct could also involve the improper use or misrepresentation of information obtained in the course of clinical trials, which could result in regulatory sanctions and serious harm to Cara’s reputation. It is not always possible to identify and deter such misconduct, and the precautions Cara takes to detect and prevent this activity may not be effective in controlling unknown or unmanaged risks or losses or in protecting Cara from governmental investigations or other actions or lawsuits stemming from a failure to be in compliance with such laws or regulations. If any such actions are instituted against Cara, and Cara is not successful in defending itself or asserting its rights, those actions could have a significant impact on Cara’s business and financial results, including the imposition of civil, criminal and administrative penalties, damages, disgorgement, monetary fines, possible exclusion from participation in Medicare, Medicaid and other federal healthcare programs, individual imprisonment, contractual damages, reputational harm, diminished profits and future earnings, additional reporting requirements and/or oversight if Cara becomes subject to a corporate integrity agreement or similar agreement to resolve allegations of non-compliance with these laws, and curtailment or restructuring of Cara’s operations, any of which could adversely affect Cara’s ability to operate its business and its results of operations.

***Cara’s business involves the use of hazardous materials and Cara and its third-party manufacturers and suppliers must comply with environmental laws and regulations, which can be expensive and restrict how Cara does business.***

Cara’s third-party manufacturers’ and suppliers’ activities involve the controlled storage, use and disposal of hazardous materials owned by it. Cara and any third-party manufacturers and suppliers it engages are subject to numerous federal, state and local environmental, health and safety laws, regulations and permitting requirements, including those governing laboratory procedures; the generation, handling, use, storage, treatment, and disposal of hazardous and regulated materials and wastes; the emission and discharge of hazardous materials into the ground, air and water; and employee health and safety. Cara’s partners’ operations involve the use of hazardous and flammable materials, including chemicals and biological materials. Cara’s operations also produce hazardous waste. In some cases, these hazardous materials and various wastes resulting from their use are stored at Cara’s contract manufacturers’ facilities pending their use and disposal. Cara generally contracts with third parties for the disposal of these materials and wastes. Cara cannot eliminate the risk of contamination, which could cause an interruption of its commercialization efforts, research and development efforts and business operations, environmental damage resulting in costly clean-up and liabilities under applicable laws and regulations governing the use, storage, handling and disposal of these materials and specified waste products. In addition, Cara cannot entirely eliminate the risk of accidental injury or contamination from these materials or wastes.

Although Cara believes that the safety procedures utilized by its third-party manufacturers for handling and disposing of these materials generally comply with the standards prescribed by these laws and regulations, Cara cannot guarantee that this is the case or eliminate the risk of accidental contamination or injury from these materials. Under certain environmental laws, Cara could be held responsible for costs relating to any contamination at its current or past facilities and at third-party facilities. In such an event, Cara may be held liable for any resulting damages and such liability could exceed Cara’s resources and state or federal or other applicable authorities may curtail Cara’s use of certain materials and/or interrupt Cara’s business operations. Furthermore, environmental laws and regulations are complex, change frequently and have tended to become more stringent. Cara cannot predict the impact of such changes and cannot be certain of its future compliance.

Compliance with applicable environmental laws and regulations may be expensive, and current or future environmental laws and regulations may impair Cara’s research, product development and manufacturing efforts.

### Risks Related to Intellectual Property

***It is difficult and costly to protect Cara’s proprietary rights and as a result Cara may not be able to ensure their protection and all patents will eventually expire.***

Cara’s commercial success will depend in part on obtaining and maintaining patent protection and trade secret protection for difelikefalin and, should Cara resume development activities in the future, for any other product candidates that Cara may develop, license or acquire and the methods Cara uses to manufacture them, as well as successfully defending these patents and trade secrets against third-party challenges. Cara will only be able to protect its technologies from unauthorized use by third parties to the extent that valid and enforceable patents or trade secrets cover them.

The patent prosecution process is expensive and time-consuming, and Cara may not be able to file and prosecute to issuance all necessary or desirable patent applications at a reasonable cost or in a timely manner. It is also possible that Cara may fail to identify patentable aspects of its R&D output before it is too late to obtain patent protection. Moreover, should Cara enter into additional collaborations it may be required to consult with or cede control to collaborators regarding the prosecution, maintenance and enforcement of its patents. Therefore, these patents and applications may not be successfully prosecuted to issuance and enforced in a manner consistent with the best interests of Cara’s business. The patent positions of pharmaceutical and biotechnology companies can be highly uncertain and involve complex legal and factual questions for which important legal principles remain unresolved. No consistent policy regarding the breadth of claims allowed in pharmaceutical or biotechnology patents has emerged to date in the United States. The patent situation outside the United States is also uncertain. Changes in either the patent laws or in interpretations of patent laws in the United States and other countries may diminish the value of Cara’s intellectual property. Accordingly, Cara cannot predict the breadth of claims that may be allowed or enforced in its patents or in third-party patents. The degree of future protection for Cara’s proprietary rights is uncertain, because legal means afford only limited protection and may not adequately protect Cara’s rights or permit Cara to gain or keep its competitive advantage. Moreover, the patent application process is also subject to numerous risks and uncertainties, and there can be no assurance that Cara or any of its future development partners will be successful in protecting difelikefalin and, should Cara resume development activities in the future, any other product candidates that Cara may develop, license or acquire by obtaining and defending patents. For example:

- Cara may not have been the first to make the inventions covered by each of its pending patent applications and issued patents;
- Cara may not have been the first to file patent applications for these inventions;
- others may independently develop similar or alternative technologies or duplicate any of Cara’s product candidates or technologies;
- it is possible that none of the pending patent applications will result in issued patents;
- the issued patents covering Cara’s product candidates may not provide a basis for commercially viable active products, may not provide Cara with any competitive advantages, or may be challenged by third parties;
- Cara may not develop additional proprietary technologies that are patentable;
- patents of others may have an adverse effect on Cara’s business;
- competitors may file trademark infringement claims or challenges to the validity of Cara’s trademark(s);
- noncompliance with governmental patent agencies requirements can result in abandonment or lapse of a patent or patent application, resulting in partial or complete loss of patent rights in the relevant

jurisdiction, potentially allowing competitors to enter the market earlier than would otherwise have been the case;

- Cara’s competitors, many of whom have substantially greater resources than Cara does and many of whom have made significant investments in competing technologies, may seek or may have already obtained patents that will limit, interfere with, or eliminate Cara’s ability to make, use, and sell Cara’s potential product candidates; or
- there may be significant pressure on the U.S. government and international governmental bodies to limit the scope of available patent protection both inside and outside the United States for disease treatments that prove successful, as a matter of public policy regarding worldwide health concerns.

Recent patent reform legislation could increase the uncertainties and costs surrounding the prosecution of Cara’s patent applications and the enforcement or defense of Cara’s issued patents. On September 16, 2011, the Leahy-Smith America Invents Act, or the Leahy-Smith Act, was signed into law. The Leahy-Smith Act includes a number of significant changes to U.S. patent law. These include provisions that affect the way patent applications are prosecuted and may also affect patent litigation. The U.S. Patent Office has developed new regulations and procedures to govern administration of the Leahy-Smith Act, and many of the substantive changes to patent law associated with the Leahy-Smith Act, including and in particular, the first to file provisions, became effective on March 16, 2013. The Leahy-Smith Act and its implementation could increase the uncertainties and costs surrounding the prosecution of Cara’s currently pending and future patent applications and the enforcement or defense of Cara’s issued patents, all of which could have a material adverse effect on Cara’s business and financial condition.

Patent applications in the United States are generally maintained in confidence for at least 18 months after their earliest effective filing date and in certain circumstances not until granted when no foreign counterpart patent applications are filed. Furthermore, published patent applications may issue at a later date with new and/or amended claims substantially different from those published earlier. Consequently, Cara cannot be certain it was the first to invent or the first to file patent applications on difelikefalin or, should Cara resume development activities in the future, any other product candidates that Cara may develop, license or acquire.

Until recent changes to the U.S. Patent Laws, patents and patent applications relating to substantially similar claimed inventions were potentially subject to interference proceedings to determine the first applicant to invent the claimed subject matter. For an interference to be declared against Cara’s patents and patent applications, any such interference would be under the 1952 law which was eliminated by the America Invents Act, or AIA, enacted in 2011 and fully effective in 2013. Such an interference would therefore have to relate to a patent or application with an effective filing date before March 16, 2013. No interference with such a patent or application has been declared to date. Therefore, it seems extremely unlikely that Cara may have to participate in interference proceedings declared by the USPTO to determine priority of invention in the United States against one or more parties claiming the same or similar invention. However, in the unlikely event that such interference was to be declared, the costs of these proceedings could be substantial and it is possible that Cara’s efforts would be unsuccessful, resulting in a material adverse effect on Cara’s U.S. patent position. The results of these types of proceedings could reduce the scope of, or invalidate, Cara’s patent rights, allow third parties to commercialize Cara’s technology or products and compete directly with it, without payment to Cara, or result in Cara’s inability to manufacture or commercialize products without infringing third-party patent rights. In addition, if the breadth or strength of protection provided by Cara’s patents and patent applications is threatened, it could dissuade companies from collaborating with Cara to license, develop or commercialize product candidates. Such results could have a material adverse effect on Cara’s results of operations.

In addition, the patentability of claims in pending patent applications covering KORSUVA injection or other difelikefalin-based product can be challenged by third parties during prosecution in the USPTO under the new AIA law of 2013, for example by third party observations and derivation proceedings, and the validity of claims in issued patents can be challenged by third parties in various post-grant proceedings such as Post-Grant Review, Inter-partes Reexamination, and Inter-partes Review proceedings.

Furthermore, Cara may not have identified all U.S. and foreign patents or published applications that affect Cara’s business either by blocking its ability to commercialize its drugs or by covering similar technologies that affect the drug market. In addition, some countries, including many in Europe, do not grant patent claims directed to methods of treating humans, and in these countries patent protection may not be available at all to protect Cara’s product candidates. Even if patents issue, Cara cannot guarantee that the claims of those patents will be valid and enforceable or provide Cara with any significant protection against competitive products, or otherwise be commercially valuable to Cara.

Cara also relies on trade secrets to protect Cara’s technology, particularly where Cara does not believe patent protection is appropriate or obtainable. However, trade secrets are difficult to protect. While Cara uses reasonable efforts to protect Cara’s trade secrets, Cara’s licensors, employees, consultants, contractors, outside scientific collaborators and other advisors may unintentionally or willfully disclose Cara’s information to competitors. Enforcing a claim that a third party illegally obtained and is using Cara’s trade secrets is expensive and time consuming, and the outcome is unpredictable. In addition, courts outside the United States are sometimes less willing to protect trade secrets. Moreover, Cara’s competitors may independently develop equivalent knowledge, methods and know-how.

If Cara fails to obtain or maintain patent protection or trade secret protection for difelikefalin or, should Cara resume development activities in the future, any other product candidate that Cara may develop, license or acquire, third parties could use Cara’s proprietary information, which could impair Cara’s ability to compete in the market and adversely affect Cara’s ability to generate revenues and achieve profitability.

Even if Cara’s patent applications issue as patents, they may not issue in a form that will provide Cara with any meaningful protection, prevent competitors from competing with it or otherwise provide it with any competitive advantage. Cara’s competitors may be able to circumvent Cara’s owned or licensed patents by developing similar or alternative technologies or products in a non-infringing manner.

The issuance of a patent is not conclusive as to its inventorship, scope, validity or enforceability, and Cara’s owned and licensed patents may be challenged in the courts or patent offices in the United States and abroad. Such challenges may result in loss of exclusivity or freedom to operate or in patent claims being narrowed, invalidated or held unenforceable, in whole or in part, which could limit Cara’s ability to stop others from using or commercializing similar or identical technology and products, or limit the duration of the patent protection of Cara’s technology and products. Given the amount of time required for the development, testing and regulatory review of new product candidates, patents protecting such product candidates might expire before or shortly after such product candidates are commercialized. As a result, Cara’s owned and licensed patent portfolio may not provide it with sufficient rights to exclude others from commercializing products similar or identical to Cara’s.

***If Cara or any current or future collaboration partner are sued for infringing intellectual property rights of third parties, it will be costly and time consuming, and an unfavorable outcome in any litigation would harm Cara’s business.***

Cara’s ability to develop, manufacture, market and sell difelikefalin or, should Cara resume development activities in the future, any potential future product candidate will depend upon Cara’s ability to avoid infringing the proprietary rights of third parties, and Cara’s commercial success will depend upon Cara’s ability, and the ability of its collaborators, to develop, manufacture, market and sell its product candidates and use its proprietary technologies without infringing the proprietary rights of third parties. There is considerable intellectual property litigation in the biotechnology and pharmaceutical industries. Numerous U.S. and foreign issued patents and pending patent applications, which are owned by third parties, exist in the general field of pain management and cover the use of numerous compounds and formulations in Cara’s targeted markets. Third parties may assert infringement claims against Cara based on existing patents or patents that may be granted in the future. Because of the uncertainty inherent in any patent or other litigation involving proprietary rights, Cara and its licensors may not be successful in defending intellectual property claims by third parties, which could have a material adverse effect on Cara’s results of operations. Regardless of the outcome of any litigation, defending the litigation may be expensive, time-consuming and distracting to management. In addition, because patent applications can take many years to issue, there may be currently pending applications, unknown to Cara, which may later result in issued patents that current or potential future product candidates may infringe. There could also be existing patents of which Cara is not aware that its current or potential future product candidates may inadvertently infringe.

There is a substantial amount of litigation involving patent and other intellectual property rights in the biotechnology and biopharmaceutical industries generally. If a third-party claims that Cara infringes on their products or technology, Cara could face a number of issues, including:

- infringement and other intellectual property claims which, with or without merit, can be expensive and time consuming to litigate and can divert management’s attention from Cara’s core business;
- substantial damages for past infringement which Cara may have to pay if a court decides that Cara’s product infringes on a competitor’s patent;
- a court prohibiting Cara from selling or licensing its product unless the patent holder licenses the patent to Cara, which it would not be required to do;
- if a license is available from a patent holder, Cara may have to pay substantial royalties or grant cross licenses to Cara’s patents; and
- redesigning Cara’s processes so they do not infringe, which may not be possible or could require substantial funds and time.

If Cara is found to infringe on a third party’s intellectual property rights, Cara could be required to obtain a license from such third party to continue developing and marketing its products and technology. However, Cara may not be able to obtain any required license on commercially reasonable terms or at all. Even if Cara were able to obtain a license, it could be non-exclusive, thereby giving Cara’s competitors access to the same technologies licensed to it. Cara could be forced, including by court order, to cease commercializing the infringing technology or product. In addition, Cara could be found liable for monetary damages, including treble damages and attorneys’ fees if Cara is found to have willfully infringed a patent. A finding of infringement could prevent Cara from commercializing its product candidate or force Cara to cease some of its business operations, which could materially harm Cara’s business. Claims that Cara has misappropriated the confidential information or trade secrets of third parties could have a similar negative impact on Cara’s business.

***Cara may be involved in lawsuits to protect or enforce its patents or the patents of its licensors, which could be expensive, time consuming and may ultimately be unsuccessful.***

Competitors may infringe on Cara’s issued patents or other intellectual property. To counter infringement or unauthorized use, Cara may be required to file infringement claims, which can be expensive and time consuming. Any claims Cara asserts against perceived infringers could provoke these parties to assert counterclaims against Cara alleging that Cara infringes their patents. In addition, in a patent infringement proceeding, a court may decide that a patent of ours is invalid or unenforceable, in whole or in part, construe the patent’s claims narrowly or refuse to stop the other party from using the technology at issue on the grounds that Cara’s patents do not cover the technology in question. An adverse result in any litigation proceeding could put one or more of Cara’s patents at risk of being invalidated or interpreted narrowly. Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of Cara’s confidential information could be compromised by disclosure during this type of litigation.

Most of Cara’s competitors are larger than Cara is and have substantially greater resources. They are, therefore, likely to be able to sustain the costs of complex patent litigation longer than Cara could. In addition, should Cara resume development activities in the future, the uncertainties associated with litigation could have a material adverse effect on Cara’s ability to raise the funds necessary to continue its clinical trials, continue its internal research programs, in-license needed technology, or enter into development partnerships that would help it bring any product candidate to market.

***Cara may need to license certain intellectual property from third parties, and such licenses may not be available or may not be available on commercially reasonable terms.***

A third party may hold intellectual property, including patent rights that are important or necessary to the development or commercialization of Cara’s products. It may be necessary for Cara to use the patented or proprietary technology of third parties to commercialize Cara’s products, in which case Cara would be required to obtain a license from these third parties. Such a license may not be available on commercially reasonable terms or at all, which could materially harm Cara’s business.

***Cara may be subject to claims that its employees have wrongfully used or disclosed alleged trade secrets of their former employers.***

As is common in the biotechnology and pharmaceutical industry, Cara employs individuals who were previously employed at other biotechnology or pharmaceutical companies, including its competitors or potential competitors. Although no claims against Cara are currently pending, Cara may be subject to claims that these employees, or Cara has inadvertently or otherwise used or disclosed trade secrets or other proprietary information of their former employers. Litigation may be necessary to defend against these claims. Even if Cara is successful in defending against these claims, litigation could result in substantial costs and be a distraction to management.

***Cara may not be able to protect its intellectual property rights throughout the world.***

Filing, prosecuting and defending patents on product candidates in all countries throughout the world would be prohibitively expensive, and Cara’s intellectual property rights in some countries outside the United States can be less extensive than those in the United States. In addition, the laws of some foreign countries do not protect intellectual property rights to the same extent as federal and state laws in the United States. Consequently, Cara may not be able to prevent third parties from practicing its inventions in all countries outside the United States, or from selling or importing products made using its inventions in and into the United States or other jurisdictions. Competitors may use Cara’s technologies in jurisdictions where Cara has not obtained patent protection to develop their own products and further, may export otherwise infringing products to territories where Cara has patent protection, but enforcement rights are not as strong as those in the United States. These products may compete with Cara’s product candidate, should Cara resume development activities, and Cara’s patents or other intellectual property rights may not be effective or sufficient to prevent them from competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The legal systems of certain countries do not favor the enforcement of patents and other intellectual property protection, which could make it difficult for Cara to stop the infringement of its patents generally. Proceedings to enforce Cara’s patent rights in foreign jurisdictions could result in substantial costs and divert Cara’s efforts and attention from other aspects of its business, could put its patents at risk of being invalidated or interpreted narrowly and its patent applications at risk of not issuing and could provoke third parties to assert claims against it. Cara may not prevail in any lawsuits that it initiates and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, Cara’s efforts to enforce its intellectual property rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property that Cara develops or licenses.

***The validity and enforceability of the patents and applications that cover difelikefalin can be challenged by competitors.***

Should Cara resume development activities in the future, in the event that oral difelikefalin or any potential future product candidate is approved by the FDA, one or more third parties may challenge the patents covering these products and product candidates, which could result in the invalidation of, or render unenforceable, some or all of the relevant patent claims. For example, if a third party files an Abbreviated New Drug Application, or ANDA, for a generic drug product containing difelikefalin, and relies in whole or in part on studies conducted by or for Cara, the third party will be required to certify to the FDA that either: (1) the patents listed in the Orange Book have expired; (2) the listed patents have not expired, but will expire on a particular date and approval is sought after patent expiration; or (3) the listed patents are invalid or will not be infringed by the manufacture, use or sale of the third-party’s generic drug product. A certification that the new product will not infringe the Orange Book-listed patents for difelikefalin, or that such patents are invalid, is called a paragraph IV certification. If the third party submits a paragraph IV certification to the FDA, a notice of the paragraph IV certification must also be sent to Cara once the third-party’s ANDA is accepted for filing by the FDA. Cara may then initiate a lawsuit to defend the patents identified in the notice. The filing of a patent infringement lawsuit within 45 days of receipt of the notice automatically prevents the FDA from approving the third-party’s ANDA until the earliest of 30 months or the date on which the patent expires, the lawsuit is settled, or the court reaches a decision in the infringement lawsuit in favor of the third party. If Cara does not file a patent infringement lawsuit within the required 45-day period, the third-party’s ANDA will not be subject to the 30-month stay. Litigation or other proceedings to enforce or defend intellectual property rights are often very complex in nature, may be very expensive and time-consuming, may divert Cara management’s attention from its core business, and may result in unfavorable results that could adversely impact Cara’s ability to prevent third parties from competing with its products.

### Risks Related to Employee Matters and Managing Growth

***Cara depends on skilled personnel to operate its business effectively in a rapidly changing market, and if Cara is unable to retain existing or hire additional personnel when needed, Cara’s ability to develop and sell its products could be harmed.***

In January 2024, as part of Cara’s pipeline prioritization, Cara reduced its headcount by approximately 50%, including the separation of Cara’s former Chief Scientific Officer and SVP of Research & Development. Further, in June 2024, in connection with Cara’s streamlined operating plan, Cara further reduced its headcount by approximately 70%. As of March 6, 2025, Cara had ten employees. Although Cara believes these employee transitions are in the best interest of the company and its stockholders, these transitions may result in the loss of personnel with deep institutional or technical knowledge. Further, the transition could potentially disrupt Cara’s operations and relationships with employees, suppliers, and partners and, as a result, create added costs, operational inefficiencies, decreased employee morale and productivity and increased turnover. In addition, Cara’s competitors may seek to use these transitions and the related potential disruptions to gain a competitive advantage over Cara. Furthermore, these changes increase Cara’s dependency on the remaining members of its leadership team and clinical and preclinical operations teams that remain with it, who are not contractually obligated to remain employed with Cara and may leave at any time. Any such departure could be particularly disruptive and, to the extent Cara experiences additional turnover, competition for top talent is high such that it may take some time to find a candidate that meets Cara’s requirements. Cara may not be able to attract or retain qualified management and commercial, scientific, and clinical personnel due to the intense competition for qualified personnel among biotechnology, pharmaceutical and other businesses. If Cara is not able to attract and retain necessary personnel to accomplish its business objectives, Cara may experience constraints that will significantly impede the achievement of its development objectives, its ability to raise additional capital and its ability to implement its business strategy.

If Cara loses additional members of its senior management team, Cara’s ability to successfully implement its business strategy could be seriously harmed. Replacing these employees may be difficult and may take an extended period of time because of the limited number of individuals in Cara’s industry with the breadth of skills and experience required to develop, gain regulatory approval of and commercialize products successfully. Competition to hire from this limited pool is intense, and Cara may be unable to hire, train, retain or motivate additional key personnel. Cara does not maintain “key person” insurance for any of its executives or other employees.

***If Cara fails to maintain proper and effective internal controls, Cara’s ability to produce accurate financial statements on a timely basis could be impaired.***

Cara is subject to the reporting requirements of the Securities Exchange Act of 1934, as amended, the Sarbanes-Oxley Act of 2002 and the rules and regulations of Nasdaq. Pursuant to Section 404 of the Sarbanes-Oxley Act of 2002, or Section 404, Cara is required to perform system and process evaluation and testing of its internal control over financial reporting to allow its management to report on the effectiveness of its internal control over financial reporting and, in the past, Cara has also previously been required to have its independent registered public accounting firm issue an opinion on the effectiveness of its internal control over financial reporting on an annual basis as a large accelerated filer. However, based on Cara’s public float as of June 30, 2024, the company remained qualified as a non-accelerated filer at the end of 2024, which would allow it to forgo the auditor attestation requirement. While Cara has previously voluntarily complied with the auditor attestation requirement when it qualified as a non-accelerated filer in 2023, it has forgone the auditor attestation for the fiscal year ended December 31, 2024.

During the evaluation and testing process, if Cara identifies one or more material weaknesses in its internal control over financial reporting, Cara will be unable to assert that its internal control over financial reporting is effective. Further, Cara may in the future discover weaknesses in its system of internal financial and accounting controls and procedures that could result in a material misstatement of its financial statements. Moreover, Cara’s internal controls over financial reporting will not prevent or detect all errors and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system’s objectives will be met. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud will be detected. Moreover, Cara is aware that the increased prevalence of remote working arrangements potentially presents additional areas of risk, including cyber and privacy risks, and Cara is carefully monitoring any impact to its internal controls and procedures.

If Cara is unable to assert that its internal control over financial reporting is effective, investors could lose confidence in the reliability of Cara’s consolidated financial statements, the market price of Cara’s stock could decline and Cara could be subject to sanctions or investigations by Nasdaq, the SEC or other regulatory authorities.

### Risks Related to Ownership of Cara Common Stock

***If Cara fails to regain and maintain compliance with the continued listing standards of the Nasdaq Capital Market, Cara may be delisted and the price of its common stock, its ability to access the capital markets and its financial condition could be negatively impacted.***

Cara’s common stock is currently listed on Nasdaq under the symbol “CARA.” To maintain the listing of its common stock on the Nasdaq Capital Market, Cara is required to meet certain listing requirements, including, among others, maintaining a minimum closing bid price of $1.00 per share. On February 1, 2024, Cara received a letter from the Listing Qualifications Department, or the Staff, of Nasdaq, notifying Cara that, for the previous 30 consecutive business day period prior to the date of the letter, the closing bid price for Cara’s common stock was below $1.00. In accordance with Nasdaq Listing Rule 5810(c)(3)(A) Cara was provided an initial period of 180 calendar days, or until July 30, 2024, to regain compliance with Nasdaq’s bid price requirement. On July 31, 2024, Cara received a notice, or the Extension Notice, from the Staff granting Cara an additional 180 calendar days, or until January 27, 2025, to regain compliance with the minimum closing bid price requirement for continued listing on The Nasdaq Capital Market under the under Nasdaq Listing Rule 5550(a)(2), or the Minimum Bid Price Requirement. Effective as of August 1, 2024, the listing of Cara’s common stock was transferred from the Nasdaq Global Market to the Nasdaq Capital Market.

As part of Cara’s plans to regain compliance with the Minimum Bid Price Requirement following the initial notification letter, a series of alternate amendments to effect (i) a reverse stock split and (ii) a reduction in the total number of authorized shares of the Cara’s common stock was approved by Cara’s stockholders at the Company’s 2024 Annual Meeting of Stockholders held on June 4, 2024. On December 19, 2024, Cara’s Board approved a one-for-twelve (12) reverse stock split and corresponding reduction in the total number of authorized shares. On December 30, 2024, Cara filed a Certificate of Amendment to its Certificate of Incorporation with the Secretary of State of the State of Delaware to effect the reverse stock split, and Cara’s common stock began trading on the Nasdaq Capital Market on a post-split basis as of December 31, 2024.

On January 16, 2025, Cara received a letter from the Staff notifying the company that Cara had regained compliance with the minimum bid price requirement. The closing bid price of the Company’s common stock was at or above $1.00 per share for ten consecutive business days, and Nasdaq considers the matter closed.

Separately, Nasdaq Listing Rule 5550(b)(1) requires companies listed on the Nasdaq Capital Market to maintain shareholders’ equity of at least $2.5 million, or the Stockholders’ Equity Requirement, or the alternative requirements of having a market value of listed securities of $35.0 million or net income from continuing operations of $0.5 million in the most recently completed fiscal year or two of the last three most recently completed fiscal years, or the Alternative Standards. On November 19, 2024, Cara received a letter from the Staff notifying the company that Cara was not in compliance with the Stockholders’ Equity Requirement because Cara’s stockholders’ equity of $707,000, as reported in Cara’s Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2024, was below the required minimum of $2.5 million and Cara did not meet the Alternative Standards. As of December 31, 2024, Cara had negative stockholders’ equity of $4.6 million and therefore is not in compliance with the Stockholders’ Equity Requirement and, as of December 31, 2024, Cara did not meet the Alternative Standards. As requested by the Staff, Cara subsequently submitted a plan to require compliance to Nasdaq, or the Compliance Plan. Based on the Compliance Plan, which contemplates the closing of the Merger, on January 14, 2025, Nasdaq granted Cara an extension until May 19, 2025 to regain compliance with the Stockholders’ Equity Requirement. The Merger will constitute a “change of control” for purposes of Nasdaq’s listing rules and will require that the combined company comply with all applicable criteria for initial listing on the Nasdaq Capital Market, including a higher minimum bid price requirement and higher minimum stockholders’ equity requirement. The parties intend to satisfy each of the applicable listing criteria upon completion of the proposed Merger such that the combined company will remain listed on the Nasdaq Capital Market.

While Cara is making every effort to regain compliance prior to the extended deadline, there can be no assurance that Cara will be able to regain compliance within the extension period, by consummation of the Merger or otherwise, or will otherwise be in compliance with other Nasdaq listing criteria, including remaining in compliance with the minimum bid price requirement. If the Nasdaq Capital Market delists Cara’s securities from trading on its exchange for failure to meet the listing standards, Cara and its stockholders could face significant negative consequences including: reducing the liquidity and market price of its common stock; reducing the number of investors willing to hold or acquire its common stock, which could negatively impact Cara’s ability to raise equity financing; decreasing the amount of news and analyst coverage of Cara; and limiting Cara’s ability to issue additional securities or obtain additional financing in the future. In addition, delisting from Nasdaq may negatively impact Cara’s reputation and, consequently, its business.

***The market price of Cara’s common stock has been, and is likely to continue to be, highly volatile, and you may not be able to resell your shares at or above the price you paid for them.***

Since Cara’s initial public offering in January 2014, Cara’s stock price has been volatile and it is likely that the trading price of its common stock will continue to be volatile. As a result of this volatility, investors may not be able to sell their common stock at or above the price paid for the shares. The market price for Cara’s common stock may be influenced by many factors, including:

- the outcome of Cara’s exploration of strategic alternatives;
- actual or anticipated variations in quarterly or annual operating results;
- failure to meet or exceed financial projections Cara provides to the public;
- failure to meet or exceed the estimates and projections of the investment community, including securities analysts;
- announcements by Cara or Cara’s competitors of significant acquisitions, strategic partnerships, or divestitures;
- introduction of competitive products or technologies;
- the perception of the pharmaceutical industry by the public, legislatures, regulators and the investment community;
- general trends in Cara’s industry or economic and market conditions and overall fluctuations in U.S. equity markets;
- developments concerning Cara’s sources of manufacturing supply, warehousing and inventory control;
- disputes or other developments relating to patents or other proprietary rights;
- additions or departures of key scientific or management personnel;
- announcements of investigations or regulatory scrutiny of Cara’s operations or lawsuits filed against it;
- capital commitments;
- investors’ general perception of the company and its business;
- announcements and expectations of additional financing efforts, including the issuance of debt, equity or convertible securities or other security instruments;
- sales of Cara’s common stock, including sales by its directors and officers or significant stockholders;
- changes in the market valuations of companies similar to Cara;
- should Cara resume development activities in the future, (i) changes or developments in laws or regulations applicable to such product candidate;(ii) delays in the commencement, enrollment and ultimate completion of any clinical trials; (iii) results of any clinical trials or those of Cara’s competitors; or (iv)any delay or refusal on the part of the FDA or other regulatory authorities in approving marketing authorization for any potential product candidate;
- changes in the structure of healthcare payment systems; and
- the other factors described in this “Risk Factors” section.

In addition, the stock market in general, and the market for small pharmaceutical and biotechnology companies in particular, have experienced extreme price and volume fluctuations that have often been unrelated or disproportionate to the operating performance of these companies. Broad market and industry factors, such as those related to fluctuations in inflation and interest rates and concerns of a recession in the United States or other major markets, the recent disruptions to and volatility in the credit and financial markets in the United States and worldwide, and geopolitical instability, including resulting from the ongoing conflicts between Russia and Ukraine, conflicts in the Middle East, and increasing tensions between China and Taiwan, may negatively affect the market price of Cara’s common stock, regardless of Cara’s actual operating performance.

Further, in the past, stockholders have initiated class action lawsuits against pharmaceutical and biotechnology companies following periods of volatility in the market prices of these companies’ stock. Such litigation, if instituted against Cara, could cause Cara to incur substantial costs and divert management’s attention and resources from its business.

***If equity research analysts cease to publish research or reports about Cara or if they publish unfavorable research or reports about the company, its business or its market, Cara’s stock price and trading volume could decline.***

The trading market for Cara’s common stock is likely to be influenced by the research and reports that equity research analysts publish about Cara and its business. Cara does not have any control over the analysts or the content and opinions included in their reports. The price of Cara’s stock could decline if one or more equity research analysts downgrade its stock or issue other unfavorable commentary or research. Certain equity research analysts who covered Cara has ceased coverage, and if further analysts who cover Cara were to cease coverage of the company or fail to publish reports on Cara regularly, demand for Cara’s stock could decrease, which in turn could cause Cara’s stock price or trading volume to decline.

### Cara’s quarterly operating results may fluctuate significantly.

Cara expects its operating results to be subject to quarterly fluctuations. Cara’s operating results will be affected by numerous factors, including:

- Cara’s exploration of strategic alternatives to maximize stockholder value, including whether Cara is able to implement any strategic alternatives, in a timely manner or at all, whether Cara realizes all or any of the anticipated benefits of any such transaction and whether any such transactions would generate value for Cara’s stockholders;
- should Cara resume development of its product candidate or any future product candidate, the successful progress of any clinical trials for such product candidates;
- should Cara resume development of activities in the future, variations in the level of expenses related to Cara’s future development programs;
- should Cara resume development of its product candidate or any future product candidate, whether the FDA or other regulatory authorities require Cara to complete additional, unanticipated studies, tests or other activities prior to approving any product candidates, which would likely further delay any such approval;
- should Cara resume development of its product candidate or any future product candidate, Cara’s ability to identify, enter into and maintain third party manufacturing arrangements capable of manufacturing any potential product candidate in commercial quantities;
- Cara’s execution of other collaborative, licensing or similar arrangements and the timing of payments Cara may make or receive under these arrangements;
- any product liability or intellectual property infringement lawsuit in which Cara may become involved;
- regulatory developments affecting any potential product candidates, or the product candidates of Cara’s competitors; and
- if any potential product candidate receives regulatory approval, the level of underlying demand for such product and wholesaler buying patterns.

If Cara’s quarterly or annual operating results fall below the expectations of investors or securities analysts, the price of Cara’s common stock could decline substantially. Furthermore, any quarterly or annual fluctuations in Cara’s operating results may, in turn, cause the price of Cara’s stock to fluctuate substantially. Cara believes that quarterly comparisons of its financial results are not necessarily meaningful and should not be relied upon as an indication of its future performance.

***Entry into an acquisition, merger, business combination, or other strategic transaction, or raising additional funds by issuing securities may cause dilution to existing stockholders and raising funds through lending and licensing arrangements may restrict Cara’s operations or require Cara to relinquish proprietary rights.***

In June 2024, Cara announced that it was undertaking a comprehensive exploration of strategic alternatives focused on maximizing stockholder value, and in December 2024 announced entrance into the Merger Agreement with Tvardi. If the Merger is not consummated, the terms of any other strategic transaction that Cara might enter could result in the issuance of securities in the company, such as Cara’s common stock, which could result significant dilution to Cara’s stockholders. Additionally, in connection with such strategic alternatives, Cara may seek to finance its cash needs through a combination of equity offerings, debt financings, royalty arrangements, grants, license and development agreements in connection with any collaborations, and other financial instruments. Cara does not yet have any committed external source of funds. To the extent that Cara raises additional capital by issuing equity securities, Cara’s existing stockholders’ ownership will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect your rights as a common stockholder. Debt financing and preferred equity financing, if available, may involve agreements that include covenants limiting or restricting Cara’s ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends.

If Cara raises additional funds through strategic transactions, collaborations, strategic alliances or marketing, distribution or licensing arrangements with third parties, Cara may have to relinquish valuable rights to its technologies, future revenue streams, research programs, product candidate or grant licenses on terms that may not be favorable to Cara. Any debt financing that Cara enters into may involve covenants that restrict its operations. These restrictive covenants may include limitations on additional borrowing and specific restrictions on the use of Cara’s assets as well as prohibitions on Cara’s ability to create liens, pay dividends, redeem its stock or make investments.

***The use of Cara’s net operating loss carryforwards and research tax credits may be limited.***

A portion of Cara’s net operating loss, or NOL, carryforwards and R&D tax credits may expire and not be used. As of December 31, 2024, Cara had federal and state NOL carryforwards of approximately $475.4 million and $403.1 million, respectively, and Cara also had federal and state R&D tax credit carryforwards of approximately $28.6 million and $4.4 million, respectively. Cara’s NOL carryforwards will begin expiring in 2026 for federal purposes (to the extent such federal NOLs are generated in taxable years beginning on or before December 31, 2017) and 2027 for state purposes if Cara has not used them prior to that time, and Cara’s federal R&D tax credits will begin expiring in 2025 unless previously used. The federal NOLs arising in 2018 and forward have an unlimited carryforward period and losses from 2018-2020 may be carried back five years due to the Coronavirus Aid, Relief, and Economic Security Act of 2020, or the CARES Act. It is uncertain if and to what extent various states will conform to the Tax Cuts and Jobs Act of 2017, or TCJA, as modified by the CARES Act. To the extent that Cara has not exchanged its Connecticut R&D tax credits for a tax refund, those tax credits carry forward indefinitely. Additionally, Cara’s ability to use any NOL and R&D tax credit carryforwards to offset taxable income or tax, respectively, in the future will be limited under Internal Revenue Code Sections 382 and 383, respectively, if Cara has a cumulative change in ownership of Cara’s stock of more than 50% within a three-year period. The completion of Cara’s initial public offering in 2014 and Cara’s follow-on public offerings in 2015, 2017, 2018 and 2019, together with private placements and other transactions that have occurred, may have triggered such ownership changes. Cara conducted a 382 analysis in the first quarter of 2021. This analysis showed a limited change of ownership had occurred, and the amount of NOL carryforwards and R&D tax credits that could be utilized annually in the future to offset taxable income or tax, respectively. In addition, since Cara will need to raise substantial additional funding to finance its operations, Cara may undergo ownership changes in the future. The Merger, if consummated, may also constitute an ownership change (within the meaning of Section 382 of the Code). Any such annual limitation may significantly reduce the utilization of the NOL carryforwards and R&D tax credits before they expire. In addition, certain states have in the past suspended use of NOL carryforwards for certain taxable years (including Connecticut which currently limits the use of NOL carryforwards by 50% and California, which recently enacted legislation that temporarily suspends the use of California NOLs for three years beginning on or after January 1, 2024), and other states are considering similar measures. As a result, Cara may incur higher state income tax expense in the future. Depending on Cara’s future tax position, limitations on its ability to use NOL carryforwards in states in which Cara is subject to income tax could have an adverse impact on Cara’s results of operations and financial condition.

***Changes to existing tax laws, or challenges to Cara’s tax positions could adversely affect its business and financial condition.***

The tax regimes to which Cara is subject or under which Cara operates are unsettled and may be subject to significant change. The issuance of additional guidance related to existing or future tax laws, or changes to tax laws or regulations proposed or implemented by the current or a future U.S. presidential administration, Congress, or taxing authorities in other jurisdictions could materially affect Cara’s tax obligations. For example, beginning in 2022, the TCJA eliminated the option to deduct R&D expenditures in the year incurred and instead requires taxpayers to capitalize and subsequently amortize such expenditures over five years for research activities conducted in the United States and over 15 years for research activities conducted outside the United States. In January 2024, the U.S. House of Representatives passed the Tax Relief for American Families and Workers Act, which would retroactively repeal for

2022 and 2023, and defer until 2026, the requirement to capitalize R&D expenditures for research activities conducted in the United States. Uncertainty exists as to whether the bill will be enacted into law. In addition, U.S. federal, state and local tax laws are extremely complex and subject to various interpretations. Although Cara believes that its tax estimates and positions are reasonable, there can be no assurance that Cara’s tax positions will not be challenged by relevant tax authorities. If the relevant tax authorities assess additional taxes on Cara, this could result in adjustments to, or impact the timing or amount of, taxable income, deductions or other tax allocations, which may adversely affect Cara’s results of operations and financial position.

***Because Cara does not intend to pay dividends on its common stock, your returns will be limited to any increase in the value of Cara’s stock.***

Cara has never declared or paid any cash dividends on its capital stock. Cara currently intends to retain all available funds and any future earnings to support its operations and finance the growth and development of Cara’s business and does not anticipate declaring or paying any cash dividends on its common stock for the foreseeable future. Any return to stockholders will therefore be limited to the appreciation of their stock, if any. Investors seeking cash dividends should not purchase its common stock.

***Provisions in Cara’s corporate charter documents and under Delaware law may prevent or frustrate attempts by Cara’s stockholders to change its management and hinder efforts to acquire a controlling interest in Cara, and the market price of Cara’s common stock may be lower as a result.***

There are provisions in Cara’s certificate of incorporation and bylaws, as amended, that may make it difficult for a third party to acquire, or attempt to acquire, control of the company, even if a change in control was considered favorable by you and other stockholders. For example, Cara’s Board has the authority to issue up to 5,000,000 shares of preferred stock and to fix the price, rights, preferences, privileges, and restrictions of the preferred stock without any further vote or action by its stockholders. The issuance of shares of preferred stock may delay or prevent a change in control transaction. As a result, the market price of Cara’s common stock and the voting and other rights of Cara’s stockholders may be adversely affected. An issuance of shares of preferred stock may result in the loss of voting control to other stockholders.

Cara’s charter documents also contain other provisions that could have an anti-takeover effect, including:

- Cara’s Board is divided into three classes, with only one class of directors elected each year;
- Cara’s stockholders are entitled to remove directors only for cause upon a 66 2/3% vote;
- Cara’s stockholders are not permitted to take actions by written consent;
- Cara’s stockholders are not permitted to call a special meeting of stockholders; and
- Cara’s stockholders must give Cara advance notice of their intent to nominate directors or submit proposals for consideration at stockholder meetings.

In addition, Cara is subject to the anti-takeover provisions of Section 203 of the Delaware General Corporation Law, which regulates corporate acquisitions by prohibiting Delaware corporations from engaging in specified business combinations with particular stockholders of those companies. These provisions could discourage potential acquisition proposals and could delay or prevent a change in control transaction. They could also have the effect of discouraging others from making tender offers for Cara’s common stock, including transactions that may be in your best interests. These provisions may also prevent changes in Cara’s management or limit the price that investors are willing to pay for its stock.

## Cybersecurity

As filed, 7,004 characters.

### Risk Management and Strategy

We implement and maintain various information security processes designed to identify, assess and manage material risks from cybersecurity threats to our critical computer networks, third party hosted services, communications systems, hardware and software, products and our critical data (including intellectual property and confidential information that is proprietary, strategic or competitive in nature, and clinical trial data) (collectively, “Information Systems and Data”).

Our Executive Director of Information Technology, or IT, and other relevant personnel help identify, assess and manage our cybersecurity threats and risks. We identify and assess risks from cybersecurity threats by monitoring and evaluating our threat environment. We (including the Executive Director of IT) use various methods designed to accomplish this task including, for example: manual tools, automated tools, subscribing to reports and services that identify cybersecurity threats, analyzing reports of threats and threat actors, conducting scans of the threat environment, evaluating our and our industry’s risk profile, evaluating threats reported to us, coordinating with law enforcement concerning threats, conducting internal audits, conducting threat assessments, conducting third-party threat assessments, and conducting vulnerability assessments.

Depending on the relevant information systems environment, we implement and maintain various technical and organizational measures, processes, standards and policies designed to manage and mitigate material risks from cybersecurity threats to our Information Systems and Data, including, for example: an incident response policy, incident detection and response measures, a vulnerability management policy, disaster recovery/business continuity plans, risk assessments, implementation of security standards/certifications, encryption of certain data, network security controls, data segregation, access controls, asset management (such as tracking and disposal of our information systems), systems monitoring, and cybersecurity insurance.

Our assessment and management of material risks from cybersecurity threats are integrated into our overall risk management processes. For example, the Executive Director of IT works with executive management to prioritize our risk management processes and mitigate cybersecurity threats that are more likely to lead to a material impact to our business. Our Executive Director of IT and executive management also evaluate material risks from cybersecurity threats against our overall business objectives and reports to the Audit Committee of our Board of Directors, or the Board.

We use service providers in an effort to identify, assess, and manage material risks from cybersecurity threats. These service providers may provide services related to: threat intelligence, cybersecurity practices, cybersecurity software, managed cybersecurity response, penetration testing, dark web monitoring, forensic investigation, and professional services (including legal counsel).

We use service providers to perform a variety of functions throughout our business, such as application providers, hosting companies, contract research organizations, contract manufacturing organizations, distributors, and supply chain resources. We maintain a vendor management program designed to manage cybersecurity risks associated with our use of these providers. The program includes conducting a risk assessment or auditing for certain vendors. Depending on the nature of the services provided, the sensitivity of the Information Systems and Data at issue, and the identity of the provider, our vendor management process may involve different levels of assessment designed to help identify, mitigate and manage cybersecurity risks associated with a particular provider.

For a description of the risks from cybersecurity threats that may materially affect us and how they may do so, see our risk factors under Part 1. Item 1A. Risk Factors in this Annual Report on Form 10-K, including the subsection titled “*Our information systems, or those of others upon whom we rely (such as our CROs, contract manufacturers,* *contractors, consultants, service providers, collaborators and others) may fail or suffer cybersecurity breaches, loss or leakage of data or other disruptions, which could result in a material disruption of our development programs, compromise sensitive information related to our business, or prevent us from accessing critical information, potentially exposing us to liability that could adversely affect our business.”*

### Governance

Our Board performs oversight of our risk management process. The Board does not have a standing risk management committee, but rather administers this oversight function directly through the Board as a whole, as well as through various standing committees of the Board that address risks inherent in their respective areas of oversight. In particular, the Board is responsible for monitoring and assessing strategic risk exposure, including a determination of the nature and level of risk appropriate for us. The Board is also focused on emerging risks, as well as risk mitigation strategies. As part of its risk mitigation duties, the Audit Committee monitors cybersecurity risk and mitigation of such risks.

Our cybersecurity risk assessment and management processes are implemented and maintained by our Executive Director of IT, who has 26 years of experience developing and deploying network and data security policy and technology.

The Executive Director of IT and Chief Financial Officer, or CFO, are responsible for hiring appropriate personnel, helping to integrate cybersecurity risk considerations into our overall risk management strategy, and communicating key cybersecurity priorities to relevant personnel. The Executive Director of IT is responsible for helping prepare for cybersecurity incidents, approving cybersecurity processes, and reviewing security assessments and other security-related reports.

Our cybersecurity incident response and vulnerability management policies are designed to escalate certain cybersecurity incidents and threats to management members, including the CFO, depending on the circumstances. The CFO, Executive Director of IT, and Vice President of Finance work with our incident response team in an effort to help us mitigate and remediate cybersecurity incidents of which they are notified. In addition, our incident response and vulnerability management policies include reporting to the Audit Committee of the Board for certain cybersecurity incidents.

The Audit Committee receives reports from the Executive Director of IT concerning our significant cybersecurity threats and risks, as well as the processes we have implemented that are designed to address them. The Audit Committee also receives various reports, summaries or presentations related to cybersecurity threats, risk and mitigation.

## Properties

As filed, 976 characters.

On May 11, 2023, we entered into a new lease for our new principal office with an initial term of 11 years, with a renewal option for an additional five-year term. Our new principal office included approximately 26,400 square feet of office space in Stamford, Connecticut. On September 26, 2024, we entered into the Assignment Agreements (as defined in Item 7. *Management’s Discussion and Analysis of Financial Condition and Results of Operations - Assignment of Our Corporate Office Lease*) in which our corporate lease, leasehold improvements, and other property and equipment from our corporate office were transferred to a third party on November 1, 2024. As of the date of this filing, we do not have any office space, and our mailing address remains unchanged from the cover page of this Annual Report on Form 10-K. See Note 19 of Notes to Consolidated Financial Statements, *Commitments and Contingencies – Assignment of New Lease*, in this Annual Report on Form 10-K.

## Legal proceedings

As filed, 576 characters.

From time to time, we may become subject to arbitration, litigation or claims arising in the ordinary course of business. We are not currently a party to any arbitration or legal proceeding that, if determined adversely to us, would have a material adverse effect on our business, operating results or financial condition. The results of any future claims or proceedings cannot be predicted with certainty, and regardless of the outcome, litigation can have an adverse impact on us because of defense and litigation costs, diversion of management resources, and other factors.

## Management's discussion and analysis

As filed, 115,393 characters.

*You should read the following discussion and analysis of our financial condition and results of operations together with our consolidated financial statements and the related notes appearing at the end of this Annual Report on Form 10-K. Some of the information contained in this discussion and analysis or set forth elsewhere in this Annual Report on Form 10-K, including information with respect to our plans and strategy for our business and related financing, includes forward-looking statements that involve risks and uncertainties. You should read “Cautionary Note Regarding Forward-Looking Statements” and Item 1A. Risk Factors of this Annual Report on Form 10-K for a discussion of material factors that could cause actual results to differ materially from the results described in or implied by the forward-looking statements contained in the following discussion and analysis.*

*Unless the context otherwise requires, Cara uses the term “CSL Vifor” to refer to CSL Vifor and its affiliated entities, including where applicable, the joint venture between CSL Vifor and Fresenius Medical Care with which Cara is a party to two collaborations for the commercialization of KORSUVA (difelikefalin) injection.*

### Overview

#### Introduction

Cara is a biopharmaceutical company that has been focused on leading a new treatment paradigm to improve the lives of patients suffering from chronic pruritus. Cara has developed an IV formulation of difelikefalin, which is approved for the treatment of moderate-to-severe pruritus associated with advanced chronic kidney disease in adults undergoing hemodialysis in the United States, the European Union, or EU, and multiple other countries. The IV formulation is out-licensed worldwide.

On June 14, 2024, Cara’s Board of Directors approved a streamlined operating plan exploring strategic alternatives focused on maximizing shareholder value after Cara announced its decision to discontinue the clinical program in notalgia paresthetica, or NP, on June 12, 2024. Cara’s decision to discontinue the clinical program in NP followed the outcome from the dose-finding Part A of the KOURAGE-1 study evaluating the efficacy and safety of oral difelikefalin for moderate-to-severe pruritus in adult patients with NP in which oral difelikefalin did not demonstrate a meaningful clinical benefit at any dose compared to placebo. The decision was not related to any safety or medical issues, or negative regulatory feedback related to the NP program. In connection with the streamlined operating plan, Cara’s Board of Directors also approved a second reduction in Cara’s workforce by approximately 70%, which was substantially completed by June 30, 2024 (see Note 19 of Notes to Consolidated Financial Statements, *Commitments and Contingencies – Restructuring Actions*, in this Annual Report on Form 10-K).

#### Merger Agreement with Tvardi

After a comprehensive review by Cara’s Board of Directors of strategic alternatives, including identifying and reviewing potential candidates for a strategic transaction, on December 17, 2024, Cara, Merger Sub and Tvardi entered into the Merger Agreement, pursuant to which Merger Sub will merge with and into Tvardi, with Tvardi surviving as a wholly owned subsidiary of Cara. The closing of the Merger is subject to approval by Cara’s and Tvardi’s stockholders, as well as other customary closing conditions, including the effectiveness of a registration statement that we have filed with the SEC, and Nasdaq’s approval of the listing of the shares of Cara common stock to be issued in connection with the transaction. Additionally, as a condition of the closing of the Merger, Tvardi must have received satisfactory evidence that the Asset Disposition (as defined below) will be consummated substantially concurrently with the closing of the Merger. If the Merger is completed, the business of Tvardi will continue as the business of the combined company. Substantially concurrent with the completion of the Merger, we will be renamed “Tvardi Therapeutics, Inc.” and expect to trade on The Nasdaq Capital Market under the symbol “TVRD.”

At the effective time of the Merger, Cara stockholders will continue to own and hold their then existing shares of Cara common stock. All outstanding and unexercised options to purchase shares of Cara common stock and Cara restricted stock units will be accelerated, the restricted stock units will be net settled, and the options will remain outstanding in accordance with their terms, except that the post-termination exercise period shall not exceed 90 days.

Immediately following the Merger, Cara’s pre-Merger equity holders are expected to hold approximately 15.25% of the shares of common stock, the pre-Merger equity holders of Tvardi are expected to hold approximately 72.21% of the shares of common stock and the holders of Tvardi’s convertible notes are expected to hold approximately 12.54% of the shares of common stock, in each case, on a fully diluted basis, and subject to certain assumptions, including based on the final exchange ratio and final amount of conversion shares from Tvardi’s convertible notes.

If, for any reason, the Merger does not close, our Board of Directors may elect to, among other things, continue our business, attempt to continue to sell or otherwise dispose of our various assets, or dissolve and liquidate our assets. Additionally, if the Merger does not close, we will not issue shares of our common stock to the equity holders of Tvardi as merger consideration and Tvardi’s convertible notes will not be converted into shares of our common stock. Under certain circumstances, we may be obligated to pay Tvardi or Tvardi may be obligated to pay us a termination fee of $2.25 million or reimburse certain expenses up to $750,000. If we decide to dissolve and liquidate our assets, we would be required to pay all of our debts and contractual obligations, and to set aside certain reserves for potential future claims.

#### Asset Disposition

On December 17, 2024, Cara and its subsidiary, Cara Royalty Sub, LLC (Cara Royalty Sub, and together with Cara, each, a Seller and together, the Sellers), entered into an Asset Purchase Agreement (APA) with Vifor Fresenius Medical Care Renal Pharma, Ltd., a majority-owned, indirect subsidiary of CSL Limited (CSL Vifor), pursuant to which, at the consummation of the transaction, Sellers will sell to CSL Vifor and CSL Vifor will acquire from Sellers certain assets and rights for the development, manufacture and commercialization of difelikefalin as well as certain associated liabilities (Asset Disposition) for a purchase price of $900,000 (subject to certain adjustments with respect to inventory). Pursuant to the APA, in connection with the consummation of the Asset Disposition, CSL Vifor and HCR (as defined below) have entered into a letter agreement with Cara providing that CSL Vifor and HCR will, subject to the satisfaction of conditions to closing under the APA, enter into an amended and restated purchase agreement to amend and replace the existing Purchase and Sale Agreement, dated as of November 1, 2023 (as amended, Original HCR Agreement), by and among Cara Royalty Sub, HCRX Investments HoldCo, L.P. (HCRX) and HealthCare Royalty Partners IV, L.P. (HCR IV and together with HCRX, HCR). Upon entering into the amended and restated purchase agreement, effective as of the closing of the Asset Disposition: (i) CSL Vifor will be obligated to make certain payments to HCR from and after the date thereof relating to certain revenue and/or royalties from difelikefalin, (ii) each of the Contribution Agreement, the License Agreement and the Pledge Agreement (each as defined in the Original HCR Agreement) shall be terminated, and (iii) Sellers shall have no further payment or other obligations to HCR under the Original HCR Agreement. Additionally, pursuant to the APA, at the consummation of the Asset Disposition, Cara has agreed to pay CSL Vifor $3.0 million to compensate CSL Vifor for the estimated incremental future expenses to be incurred by CSL Vifor as a result of the transfer of the assets to be acquired and the liabilities to be assumed by it in connection with the Asset Disposition. The Asset Disposition is subject to certain conditions to closing, including either (i) the consummation of the Merger concurrently with the Asset Disposition or (ii) the receipt of the requisite stockholder approval needed to approve the Asset Disposition in the event that the Merger is terminated.

Cara’s future operations are highly dependent on the success of the Merger and the Asset Disposition, and there can be no assurances that the Merger and Asset Disposition will be successfully consummated. There can be no assurance that any transaction, including the Merger and the Asset Disposition. will be completed on terms favorable to Cara and its stockholders. If these transactions are unsuccessful, Cara’s Board of Directors may decide to pursue a dissolution and liquidation of Cara.

#### Corporate History

Cara was incorporated and commenced operations in 2004, and its primary activities to date have been organizing and staffing the company, developing its lead product and product candidates, including conducting preclinical studies and clinical trials of difelikefalin-based product candidates and raising capital. To date, Cara has financed its operations primarily through sales of its equity and debt securities, sales of its royalties from ex-U.S. sales of its commercial product, and payments from license agreements.

#### Corporate Update

On June 7, 2024, Cara filed a Certificate of Amendment to its Certificate of Incorporation, or the Certificate, with the Secretary of State of the State of Delaware which was approved by Cara’s stockholders at its Annual Meeting of Stockholders on June 4, 2024. The Certificate increased the authorized number of shares of Cara’s common stock from 100,000,000 shares to 200,000,000 shares (before giving effect to the Reverse Stock Split, as described below). The additional shares of common stock authorized by the Certificate have rights identical to Cara’s currently outstanding common stock and any issuance of common stock pursuant to the Certificate would not affect the rights of the holders of Cara’s currently outstanding common stock, except for effects incidental to increasing the number of shares of Cara’s common stock outstanding, such as dilution of the earnings per share and voting rights of current holders of its common stock.

On November 13, 2024, Cara’s Board of Directors approved an amendment to our Amended and Restated Bylaws, effective immediately, to reduce the quorum requirement for stockholder meetings from a majority of the outstanding shares entitled to vote to one-third of the voting power of the issued and outstanding shares entitled to vote.

Cara’s stockholders approved, at its 2024 Annual Meeting of Stockholders on June 4, 2024, a series of alternate amendments to the Certificate, to effect a reverse stock split of Cara’s common stock and corresponding proportionate reduction in the total number of authorized shares of Cara’s common stock, where Cara’s Board had the discretion to select the reverse stock split ratio from within a range between and including one-for-four and one-for-twelve. On December 19, 2024, Cara’s Board approved a one-for-twelve (12) reverse stock split, or the Reverse Stock Split, and corresponding reduction in the total number of authorized shares from 200,000,000 to 16,666,667, or the Authorized Shares Reduction. On December 30, 2024, Cara filed a Certificate of Amendment to its Certificate of Incorporation with the Secretary of State of the State of Delaware to effect the Reverse Stock Split and Authorized Shares Reduction, and Cara’s common stock began trading on the Nasdaq Capital Market on a post-split basis as of December 31, 2024. All share and per share amounts in this Annual Report on Form 10-K have been retroactively adjusted to give effect to the Reverse Stock Split.

#### NASDAQ Continued Listing Rules

On February 1, 2024, Cara received a letter from the Staff notifying Cara that, for the previous 30 consecutive business day period prior to the date of the letter, the closing bid price for Cara’s common stock was below $1.00. In accordance with Nasdaq Listing Rule 5810(c)(3)(A) Cara was provided an initial period of 180 calendar days, or until July 30, 2024, to regain compliance with Nasdaq’s bid price requirement. On July 31, 2024, Cara received the Extension Notice from the Staff granting Cara an additional 180 calendar days, or until January 27, 2025, to regain compliance with the minimum closing bid price requirement for continued listing on The Nasdaq Capital Market under the Minimum Bid Price Requirement. Effective as of August 1, 2024, the listing of Cara’s common stock was transferred from the Nasdaq Global Market to the Nasdaq Capital Market.

As part of Cara’s plans to regain compliance with the Minimum Bid Price Requirement following the initial notification letter, a series of alternate amendments to effect (i) a reverse stock split and (ii) a reduction in the total number of authorized shares of the Cara’s common stock was approved by Cara’s stockholders at the Company’s 2024 Annual Meeting of Stockholders held on June 4, 2024. On December 19, 2024, Cara’s Board approved the Reverse Stock Split and Authorized Shares Reduction. On December 30, 2024, Cara filed a Certificate of Amendment to its Certificate of Incorporation with the Secretary of State of the State of Delaware to effect the Reverse Stock Split and Authorized Shares Reduction, and Cara’s common stock began trading on the Nasdaq Capital Market on a post-split basis as of December 31, 2024.

On January 16, 2025, Cara received a letter from the Staff notifying the company that Cara had regained compliance with the minimum bid price requirement. The closing bid price of the Company’s common stock was at or above $1.00 per share for ten consecutive business days, and Nasdaq considers the matter closed.

As a result of the Reverse Stock Split, every 12 shares of Cara’s pre-reverse split common stock were combined and reclassified as one share of common stock. The proportionate voting rights and other rights of common stockholders were not affected by the Reverse Stock Split, other than as the result of payment for fractional shares. No fractional shares were issued in connection with the Reverse Stock Split. Stockholders who would have held a fractional share of common stock received a cash payment in lieu thereof. The par value and other terms of our common stock were not affected by the Reverse Stock Split.

All share and per share information have been retroactively adjusted to give effect to the Reverse Stock Split for all periods presented, unless otherwise indicated. Proportionate adjustments were made to the per share exercise price and/or the number of shares issuable upon the exercise or vesting of all stock options and restricted stock units outstanding at December 31, 2024, which resulted in a proportional decrease in the number of shares of Cara’s common stock reserved for issuance upon exercise or vesting of such stock options and restricted stock units, and in the case of stock options, a proportional increase in the exercise price of all such stock options.

Nasdaq Listing Rule 5550(b)(1) requires companies listed on the Nasdaq Capital Market to comply with the Stockholders’ Equity Requirement, or the Alternative Standards. On November 19, 2024, Cara received a letter from the Staff notifying the company that Cara was not in compliance with the Stockholders’ Equity Requirement because Cara’s stockholders’ equity of $707,000, as reported in Cara’s Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2024, was below the required minimum of $2.5 million and Cara did not meet the Alternative Standards. As of December 31, 2024, Cara had negative shareholders’ equity of $4.6 million and therefore is not in compliance with the Stockholders’ Equity Requirement and, as of December 31, 2024, Cara did not meet the Alternative Standards. If Cara continues to not be in compliance or if Cara fails to meet other Nasdaq continuing listing requirements, Cara’s common stock may be subject to delisting, and Cara may become subject to delisting proceedings.

As requested by Nasdaq, Cara subsequently submitted the Compliance Plan. On January 14, 2025, based on the Compliance Plan, which contemplates the closing of the proposed Merger between Cara and Tvardi, Nasdaq granted Cara an extension until May 19, 2025 to regain compliance with the Stockholders’ Equity Requirement.

The Merger will constitute a “change of control” for purposes of Nasdaq’s listing rules and will require that the combined company comply with all applicable criteria for initial listing on the Nasdaq Capital Market, including a higher bid price requirement and higher Stockholders’ Equity Requirement. The parties intend to satisfy each of the applicable listing criteria upon completion of the proposed Merger such that the combined company will remain listed on the Nasdaq Capital Market.

While Cara is making every effort to regain compliance prior to the extended deadline, there can be no assurance that Cara will be able to regain compliance within the extension period, by consummation of the Merger or otherwise, or will otherwise be in compliance with other Nasdaq listing criteria, including remaining in compliance with the minimum bid price requirement.

#### Assignment of Our Corporate Office Lease

On September 26, 2024, Cara entered into a Consent to Lease Assignment and Amendment to Lease with the Landlord and an Assignment and Assumption of Lease Agreement, or the Assignment Agreements, in which our corporate lease, leasehold improvements, and other property and equipment from our corporate office were transferred to a third party on November 1, 2024 (see Note 19 of Notes to Consolidated Financial Statements, *Commitments and Contingencies – Assignment of New Lease*, in this Annual Report on Form 10-K).

### KORSUVA (difelikefalin) injection – Our Commercial Stage Product

We have out-licensed to CSL Vifor the commercialization of KORSUVA injection/Kapruvia in dialysis patients with moderate-to-severe pruritus associated with chronic kidney disease, or advanced CKD-aP, worldwide, excluding Japan (licensed to Maruishi/sub-licensee Kissei), and South Korea (licensed to CKDP).

On August 23, 2021, KORSUVA injection was approved by the FDA for the treatment of moderate-to-severe pruritus associated with advanced CKD in adults undergoing hemodialysis. In December 2021, CMS granted TDAPA to KORSUVA injection in the anti-pruritic functional category. TDAPA went into effect on April 1, 2022 for two years. The commercial launch of KORSUVA injection commenced in April 2022 and we began recording the associated profit-sharing revenues in the second quarter of 2022. On October 27, 2023, CMS published the final CY 2024 rule, which finalized the post-TDAPA add-on payment as proposed in the draft CY 2024 rule. Under the final rule, TDAPA drugs in existing functional categories will receive a post-TDAPA add-on payment set at 65 percent of the total trailing 12-months expenditure levels for the given renal dialysis drug or biological product. The post-TDAPA add-on payment will be applied to all ESRD PPS payments and paid for 3 years, adjusted annually. The add-on payments for KORSUVA injection commenced on April 1, 2024. The unfavorable CMS reimbursement codified in the final CY2024 rule has resulted in a lack of sequential revenues growth for KORSUVA injection since its launch.

For the year ended December 31, 2024, CSL Vifor recorded net sales of KORSUVA injection in the United States of approximately $2.1 million, which included negative net sales reported by CSL Vifor for the second and fourth quarters of 2024 primarily due to higher rebates and chargebacks due to price decreases on KORSUVA injection related to the expiration of TDAPA in April 2024. For the years ended December 31, 2023 and 2022, CSL Vifor recorded net sales of KORSUVA injection in the United States of approximately $26.5 million and $35.0 million, respectively. For the years ended December 31, 2024, 2023 and 2022, we recorded associated collaborative revenue of $2.1 million, $12.4 million and $16.6 million, respectively. However, we have recorded an expense in other G&A expense for approximately $1.6 million for the year ended December 31, 2024 as a result of the negative profit share amount in the second and fourth quarters of 2024. As a result of the final CY 2024 rule, we expect no meaningful revenue contribution from KORSUVA injection following the TDAPA period expiration.

In April 2022, the European Commission granted a marketing authorization to difelikefalin injection under the brand name Kapruvia for the treatment of moderate-to-severe pruritus associated with advanced CKD in adult hemodialysis patients. The marketing authorization approves Kapruvia for use in all member states of the EU, as well as Iceland, Liechtenstein, and Norway. Difelikefalin injection was also approved in the UK (04/2022) and Switzerland (08/2022) under the brand name Kapruvia as well as Singapore (08/2022), Canada (08/2022), Australia (11/2022), UAE (01/2023), Kuwait (05/2023), Israel (06/2023), Japan (09/2023), and Saudi Arabia (01/2024) under the brand name KORSUVA injection. For the years ended December 30, 2023 and 2022, we recorded royalty revenue of approximately $415,000 and $72,000, respectively, which represented our royalties on net sales of Kapruvia and KORSUVA injection.

During the fourth quarter of 2023, we entered into the Original HCR Agreement with HCR, pursuant to which HCR will receive current and future royalty and milestone payments for Kapruvia and KORSUVA (ex-U.S. only) up to certain capped amounts in exchange for certain payments made to us. As a result, there was no royalty revenue recorded for the year ended December 31, 2024. However, we recorded other revenue of approximately $4.3 million for the year ended December 31, 2024, of which approximately $1.5 million related to CSL Vifor royalties to be paid to HCR under this agreement. For the period of October 1, 2023 through December 31, 2023, we also recorded other revenue of $699,000, of which approximately $284,000 related to CSL Vifor royalties to be paid to HCR under this agreement (see “Royalty Purchase and Sale Agreement” below).

We have out-licensed to Maruishi and its sub-licensee Kissei the commercialization of KORSUVA injection in Japan. In September 2023, Maruishi received manufacturing and marketing approval from Japan’s Ministry of Health, Labour and Welfare for KORSUVA IV Injection Syringe for the treatment of pruritus in hemodialysis patients. In conjunction with the approval, we earned a $1.4 million milestone payment per the terms of the licensing agreement during the year ended December 31, 2023.

During the fourth quarter of 2023, we entered into the Original HCR Agreement where we sold our future royalties and milestones for KORSUVA in Japan to HCR. For the year ended December 31, 2024, we recorded other revenue of approximately $4.3 million, of which approximately $2.8 million related to Maruishi royalties to be paid to HCR under this agreement. For the period of October 1, 2023 through December 31, 2023, we also recorded other revenue of $699,000, of which approximately $415,000 related to Maruishi royalties to be paid to HCR under this agreement (see “Royalty Purchase and Sale Agreement” below).

As a result of our sales of royalties and milestones for KORSUVA/Kapruvia, we expect no meaningful revenue contribution from KORSUVA/Kapruvia royalties and milestones in the foreseeable future.

#### KORSUVA Injection U.S. Commercialization

In April 2022, our partner CSL Vifor initiated the commercialization of KORSUVA injection in the United States. The launch was initially driven by independent and mid-size dialysis organizations coupled with product stocking at the wholesaler level. In the third quarter of 2022, large dialysis organizations, or LDOs, came on-line driving a significant quarter-to-quarter increase in order volume from the wholesaler. This stocking at the clinic level, particularly from FMC, resulted in significant subsequent quarterly revenue fluctuations. In the third quarter of 2023, FMC decided to reallocate all remaining clinic level inventory within its network of clinics resulting in limited revenues in the fourth quarter of 2023 and the year ended December 31, 2024.

### Collaboration and License Agreements

#### Agreements with CSL Vifor

We are party to two separate license agreements with CSL Vifor. In October 2020, we granted CSL Vifor an exclusive license solely in the United States to use, distribute, offer for sale, promote, sell, and otherwise commercialize KORSUVA (difelikefalin) injection for all therapeutic uses relating to the inhibition, prevention or treatment of itch associated with pruritus in hemodialysis and peritoneal dialysis patients in the United States.

We received an upfront payment of $100.0 million and an additional payment of $50.0 million for the purchase of an aggregate of 244,963 shares of our common stock at a price of $204.11 per share, which represented a premium over a pre-determined average closing price of our common stock. The U.S. regulatory approval of KORSUVA injection in August 2021 triggered an additional $50.0 million equity purchase by CSL Vifor in October 2021, in which we sold an aggregate of 273,533 shares of our common stock at a price of $182.76 per share, which represented a 20% premium to the 30-day trailing average price of our common stock. In addition, pursuant to this agreement, we are eligible to receive payments of up to $240.0 million upon the achievement of certain sales-based milestones. However, based on the limited commercial success of KORSUVA injection, we do not expect to achieve these sales-based milestones.

Pursuant to the agreement for commercialization of KORSUVA in the United States, we are generally entitled to 60% of the net profits from sales of KORSUVA injection in the United States and CSL Vifor is entitled to 40% of such net profits (excluding sales to Fresenius Medical Center dialysis clinics, compensation for which is governed by a separate agreement), subject to potential temporary adjustment in future years based on certain conditions. Under this agreement, in consideration of CSL Vifor’s conduct of the marketing, promotion, selling and distribution of KORSUVA injection in the United States, we pay a marketing and distribution fee to CSL Vifor based on the level of annual net sales. This fee as well as CSL Vifor’s cost of goods sold, or COGS, are deducted from net sales in calculating the net profits that are subject to the profit-sharing arrangement under the agreement.

Under a separate agreement with CSL Vifor, in May 2018, we granted CSL Vifor a license to seek regulatory approval to commercialize, import, export, use, distribute, offer for sale, promote, sell and otherwise commercialize KORSUVA (difelikefalin) injection for all therapeutic uses to prevent, inhibit or treat itch associated with pruritus in hemodialysis and peritoneal-dialysis patients worldwide (excluding the United States, Japan and South Korea). Under the agreement, CSL Vifor also has the right to promote KORSUVA injection in the United States in the dialysis clinics of Fresenius Medical Care North America, or FMCNA, under a profit-sharing arrangement.

Upon entry into this agreement, we received a non-refundable, non-creditable $50.0 million upfront payment for the purchase of an aggregate of 97,902 shares of our common stock at a price of $204.29 per share, which represented a premium over a pre-determined average closing price of our common stock.

As a result of the European Commission’s regulatory approval of Kapruvia in April 2022, we received a $15.0 million regulatory milestone payment from CSL Vifor, which was recorded as license and milestone fees revenue for the year ended December 31, 2022. After U.S. regulatory approval of KORSUVA injection in August 2021, we received a $15.0 million regulatory milestone payment.

We are eligible to receive from CSL Vifor commercial milestone payments in the aggregate of up to $440.0 million, all of which milestones are sales related. We are also eligible to receive tiered double-digit royalty payments based on annual net sales, as defined, of KORSUVA (difelikefalin) injection in the licensed territories. In the United States, CSL Vifor will promote KORSUVA (difelikefalin) injection in the dialysis clinics of FMCNA under a profit-sharing arrangement (subject to the terms and conditions of this agreement) based on net FMCNA clinic sales) and Vifor Fresenius Medical Care Renal Pharma Ltd. is entitled to 50% of such net profits, subject to potential adjustments in a calendar year based on certain conditions. During the fourth quarter of 2023, we entered into the Original HCR Agreement pursuant to which we sold our future royalties and milestone payments under this agreement to HCR (see “Royalty Purchase and Sale Agreement” below).

#### Maruishi Pharmaceutical Co., Ltd., or Maruishi

In April 2013, we entered into a license agreement with Maruishi, or the Maruishi Agreement, under which we granted Maruishi an exclusive license to develop, manufacture and commercialize drug products containing difelikefalin in Japan in the acute pain and uremic pruritus fields. Maruishi has a right of first negotiation for any other indications for which we develop difelikefalin and, under certain conditions, Maruishi may substitute another pruritus indication for the uremic pruritus indication originally included in its license from us. Maruishi’s right of first negotiation has expired for the indication of chronic pruritus associated with NP. Maruishi is required to use commercially reasonable efforts, at its expense, to develop, obtain regulatory approval for and commercialize difelikefalin in Japan. We are required to use commercially reasonable efforts, at our expense, to develop, obtain regulatory approval for and commercialize difelikefalin in the United States.

In January 2022, Maruishi and its sublicensee Kissei confirmed the primary endpoint was achieved in a Japanese Phase 3 clinical study (double-blind, placebo-controlled period) of difelikefalin injection for the treatment of pruritus in hemodialysis patients. In the Phase 3 study, 178 patients were administered difelikefalin or placebo for 6 weeks followed by an open-label extension period of difelikefalin administration for 52 weeks. The primary endpoint, change in itch NRS score, and the secondary endpoint, change in itching scores of Shiratori severity criteria, were significantly improved from baseline compared to the placebo group. Difelikefalin was well-tolerated.

Under the terms of the Maruishi Agreement, we received a non-refundable and non-creditable upfront license fee of $15.0 million and are eligible to receive up to an aggregate of $10.5 million in clinical development and regulatory milestones (before contractual foreign currency exchange adjustments). In January 2021, we met the milestone criteria, as set forth in the Maruishi Agreement, for Maruishi’s first initiation of a Phase 3 trial for uremic pruritus in Japan. As a result, we received the $2.0 million milestone payment ($1.9 million after contractual foreign currency exchange adjustments) in May 2021.

In September 2022, Maruishi submitted a New Drug Application in Japan for approval of difelikefalin injection for the treatment of pruritus in hemodialysis patients. In September 2023, Maruishi received manufacturing and marketing approval from Japan’s Ministry of Health, Labour and Welfare for KORSUVA IV Injection Syringe for the treatment of pruritus in hemodialysis patients. In conjunction with the approval, we earned a $1.4 million milestone payment per the terms of the licensing agreement for the year ended December 31, 2023. In November 2023, we entered into an active pharmaceutical ingredient, or API, supply agreement with Maruishi for difelikefalin.

To date, we have received $6.5 million (before contractual foreign currency exchange adjustments) of clinical development and regulatory milestones from Maruishi. We are also eligible to receive a one-time sales milestone of one billion Yen when a certain sales level is attained. We also receive a mid-double-digit percentage of all non-royalty payments received by Maruishi from its sublicensees, if any, and tiered royalties based on net sales, if any, with minimum royalty rates in the low double digits and maximum royalty rates in the low twenties. Maruishi’s obligation to pay us royalties continues, on a product-by-product basis, until the expiration of the last-to-expire licensed patent covering such product or the later expiration of any market exclusivity period. During the fourth quarter of 2023, we entered into the Original HCR Agreement pursuant to which we sold our future royalties and milestone payments under the Maruishi Agreement to HCR (see “Royalty Purchase and Sale Agreement” below). Cara expects to assign the Maruishi Agreement to CSL Vifor in connection with the Merger and Asset Disposition.

#### Chong Kun Dang Pharmaceutical Corporation, or CKDP

In April 2012, we entered into a license agreement with CKDP, or the CKDP Agreement, under which we granted CKDP an exclusive license to develop, manufacture and commercialize drug products containing difelikefalin in South Korea. CKDP is required to use commercially reasonable efforts, at its expense, to develop, obtain regulatory approval for and commercialize difelikefalin in South Korea. We are required to use commercially reasonable efforts, at our expense, to develop, obtain regulatory approval for and commercialize difelikefalin in the United States.

Under the terms of the CKDP Agreement, we received a non-refundable and non-creditable $0.6 million upfront payment and are eligible to receive up to an aggregate of $3.8 million in development and regulatory milestones (before South Korean withholding taxes). To date, we have received $2.3 million (before South Korean withholding tax) of development and regulatory milestones. We are also eligible to receive a mid-double-digit percentage of all non-royalty payments received by CKDP from its sublicensees, if any, and tiered royalties ranging from the high single digits to the high teens based on net sales, if any. CKDP’s obligation to pay us royalties continues, on a product-by-product basis, until the expiration of the last-to-expire licensed patent covering such product or the later expiration of any market exclusivity period.

The CKDP Agreement continues until CKDP no longer has any obligation to pay us royalties on any product. Either we or CKDP may terminate the CKDP Agreement for the other party’s breach of the CKDP Agreement or bankruptcy. CKDP may terminate the CKDP Agreement if any of the licensed patent rights is invalid, unenforceable, is narrowed in scope or is deemed unpatentable, except as a result of a challenge by CKDP, or a third party commercializes a product containing a compound identical to difelikefalin without infringing any of the licensed patent rights in South Korea. We may terminate the CKDP Agreement if CKDP challenges the licensed patent rights or if a third party in South Korea owns an issued patent that claims difelikefalin and CKDP’s sale of products would infringe that patent. In addition, in connection with the CKDP Agreement, CKDP made a $0.4 million equity investment in our company. Cara expects to assign the CKDP Agreement to CSL Vifor in connection with the Merger and Asset Disposition.

### Manufacturing and License Agreements

#### Polypeptide Laboratories S.A., or PPL

In July 2021, we entered into an API Commercial Supply Agreement with Polypeptide Laboratories S.A., or PPL, that defines each party’s responsibilities with respect to PPL’s manufacture and supply of API for the difelikefalin injection product candidate. Under the API Commercial Supply Agreement, PPL shall manufacture API at its facility for sale and supply to us, in the amounts as set forth in purchase orders to be provided by us. We will be required to purchase our requirements of API for each year of the term of the agreement, based on internal forecasts.

The API Commercial Supply Agreement will continue until the fifth anniversary of the approval by the FDA of the NDA for KORSUVA injection, unless the API Commercial Supply Agreement is earlier terminated, and will automatically be extended for successive five-year periods unless either party gives notice to the other party of its intention to terminate. Cara expects to assign the API Commercial Supply Agreement to CSL Vifor in connection with the Merger and Asset Disposition.

#### Enteris Biopharma, Inc., or Enteris

In August 2019, we entered into a non-exclusive license agreement with Enteris Biopharma, Inc. (Enteris), or the Enteris License Agreement. Pursuant to the Enteris License Agreement, Enteris granted to us a non-exclusive, royalty-bearing license, including the right to grant sublicenses, under certain proprietary technology and patent rights related to or covering formulations for oral delivery of peptide active pharmaceutical ingredients with functional excipients to enhance permeability and/or solubility, known as Enteris’s Peptelligence® technology, to develop, manufacture and commercialize products using such technology worldwide, excluding Japan and South Korea.

As consideration for the licensed rights under the Enteris License Agreement, we paid an upfront fee equal to $8.0 million, consisting of $4.0 million in cash and $4.0 million in shares of our common stock pursuant to the Enteris Purchase Agreement described below.

We are also obligated, pursuant to the Enteris License Agreement, to pay Enteris (1) milestone payments upon the achievement of certain development, regulatory and commercial milestones and (2) low-single digit royalty percentages on net sales of licensed products, subject to reductions in specified circumstances. Until the second anniversary of the entry into the Enteris License Agreement, we had the right, but not the obligation, to terminate our obligation to pay any royalties under the Royalty Buyout. We did not exercise our Royalty Buyout right and such right expired in August 2021. During the years ended December 31, 2024 and 2023, no milestone payments or royalties were paid to Enteris by us in relation to the Enteris License Agreement. During the year ended December 31, 2022, we paid $5.0 million to Enteris for milestones earned in relation to the Enteris License Agreement, which were recorded in R&D expense for 2022.

The Enteris License Agreement will expire on a country-by-country, licensed product-by-licensed product basis upon the later of (1) the expiration (or invalidation) of all valid claims in licensed patent rights that cover such product in such country, (2) the end of the calendar quarter in which generic competition (as defined in the Enteris License Agreement) occurs for such product in such country and (3) ten years from the first commercial sale of such product.

Either party may terminate the Enteris License Agreement upon written notice if the other party has failed to remedy a material breach within 60 days (or 30 days in the case of a material breach of a payment obligation). Enteris may terminate the Enteris License Agreement upon 30 days’ written notice to us if we or any of our affiliates formally challenge the validity of any licensed patent rights or assists a third party in doing so. We may terminate the Enteris License Agreement for any reason or no reason (a) prior to receipt of first regulatory approval for a licensed product in the United States for any indication upon 30 days’ prior written notice to Enteris or (b) on or after receipt of first regulatory approval for a licensed product in the United States for any indication upon 60 days’ prior written notice to Enteris. In June 2024, we announced our decision to discontinue the clinical program in NP following the outcome from the dose-finding Part A of the KOURAGE-1 study evaluating the efficacy and safety of oral difelikefalin for moderate-to-severe pruritus in adult patients with NP.

#### Patheon UK Limited, or Patheon

In July 2019, we entered into a Master Services Agreement, or MSA, with Patheon UK Limited, or Patheon. The MSA governs the general terms under which Patheon, or one of its affiliates, will provide non-exclusive manufacturing services to us for the drug products specified by us from time to time. Pursuant to the MSA, we have agreed to order from Patheon at least a certain percentage of our commercial requirements for a product under a related Product Agreement. Each Product Agreement that we may enter into from time to time will be governed by the terms of the MSA, unless expressly modified in such Product Agreement.

The MSA had an initial term ending December 31, 2024, which automatically renewed after the initial term for successive terms of two years until December 31, 2026.

Either party may terminate the MSA or a Product Agreement upon written notice if the other party (1) has failed to remedy a material breach within a specified time or (2) is declared insolvent or bankrupt, voluntarily files a petition of bankruptcy or assigns such agreement for the benefit of creditors. We may terminate a Product Agreement (a) upon 90 days’ prior written notice if any governmental agency takes any action that prevents us from selling the relevant product in the relevant territory, (b) upon six months’ prior written notice if we do not intend to order manufacturing services due to a product’s discontinuance in the market, or (c) upon 90 days’ prior written notice if we determine that the manufacture or supply of a product likely infringes third-party rights. Patheon may terminate the MSA or a Product Agreement (i) upon six months’ prior written notice if we assign such agreement to an assignee that is unacceptable to Patheon for certain reasons, or (ii) upon 30 days’ prior written notice if, after the first year of commercial sales, we forecast zero volume for 12 months.

The MSA contains, among other provisions, customary representations and warranties by the parties, a grant to Patheon of certain limited license rights to our intellectual property in connection with Patheon’s performance of the services under the MSA, certain indemnification rights in favor of both parties, limitations of liability and customary confidentiality provisions.

Also in July 2019, we entered into two related Product Agreements under the MSA, one with each of Patheon and Patheon Greenville, to govern the terms and conditions of the manufacture of commercial supplies of difelikefalin injection. Pursuant to the Product Agreements, Patheon and Patheon Greenville will manufacture commercial supplies of difelikefalin injection at the Monza, Italy and Greenville, North Carolina manufacturing sites, respectively, from API supplied by us. Patheon and Patheon Greenville will be responsible for supplying the other required raw materials and packaging components, and will also provide supportive manufacturing services such as quality control testing for raw materials, packaging components and finished product.

In December 2023, we entered into an agreement with Patheon to reimburse Patheon approximately $1.7 million for forecasted manufacturing commitments that were no longer needed due to the reduced demand expectations of KORSUVA in the United States, all of which had been paid as of December 31, 2024. Cara expects to assign the MSA to CSL Vifor in connection with the Merger and Asset Disposition.

### Royalty Purchase and Sale Agreement

During the fourth quarter of 2023, we, through our wholly-owned subsidiary Cara Royalty Sub, entered into the Original HCR Agreement, pursuant to which Cara Royalty Sub sold to HCR certain of its rights to receive the Royalties, due and payable to Cara Royalty Sub (as our assignee) under our agreements with Maruishi and CSL Vifor, collectively the Covered License Agreements, in exchange for up to $40.0 million. We have retained all of our right, title and interest in, to and under the Covered License Agreements that relate to any non-intravenous formulation of difelikefalin.

Under the terms of the Original HCR Agreement, Cara received an initial payment of $17.5 million less certain transaction costs in November 2023. In December 2023, we received an additional $20.0 million less certain advisory fees, upon satisfying the milestone event for pricing of Kapruvia® (difelikefalin) in Germany being approved above a certain threshold amount per dose. An additional $2.5 million milestone payment is due to Cara Royalty Sub in the first quarter of 2025 for the achievement of a 2024 sales milestone of KORSUVA in Japan and is included within other receivables on our Consolidated Balance Sheet as of December 31, 2024.

The Original HCR Agreement will automatically expire, and the payment of Royalties to HCR will cease, when HCR has received payments of Royalties equal to two times the aggregate amount of payments made by HCR under the Original HCR Agreement if achieved on or prior to December 31, 2029, or 2.8 times the aggregate amount of payments made by HCR under the Original HCR Agreement, if not achieved on or prior to December 31, 2029. In the event of a change of control, Cara Royalty Sub will pay to HCR an amount equal to 2.8 times the aggregate amount of payments made by HCR less the total net amounts paid by Cara Royalty Sub to HCR as of the effective date of control. In certain situations, Cara Royalty Sub would not be obligated to pay the change of control payment to HCR. After the Original HCR Agreement expires, all rights to receive the Royalties return to Cara Royalty Sub.

### Components of Operating Results

The following discussion sets forth certain components of our Consolidated Statements of Comprehensive Loss as well as factors that impact those items or could impact those items in the future.

### Revenue

To date, we have generated revenue primarily from (1) collaborative revenue from our share of the profit generated by KORSUVA injection sales in the United States; (2) commercial supply revenue from our sales of commercial product to CSL Vifor, which is subsequently sold to wholesalers; (3) the receipt of upfront license fees and milestone payments; (4) royalty revenue in conjunction with sales of Kapruvia in Europe through September 30, 2023; and (5) clinical compound sales from certain license agreements. We are eligible to receive sales-based milestones in the future in accordance with certain licensing agreements.

Beginning in the fourth quarter of 2023, the revenue received under our agreements with CSL Vifor and Maruishi for royalty and sales-based milestone payments received in conjunction with ex-U.S. sales of KORSUVA/Kapruvia were recorded as other revenue and considered non-cash until we have fulfilled our obligations under the Original HCR Agreement (see “Royalty Purchase and Sale Agreement” above).

To date, we have earned a total of $139.6 million in clinical development or regulatory milestone payments, clinical compound and commercial compound sales from certain license agreements, collaborative revenue from our share of the profit generated by KORSUVA injection sales, and royalty revenue (which ceased upon entry into the Original HCR Agreement during the fourth quarter of 2023).

Revenue from sales of KORSUVA injection in future periods is subject to uncertainties and will depend on several factors, including the success of our and our commercial partners’ commercialization efforts in the United States, the number of new patients adopting or switching to KORSUVA injection, patient retention and sustained demand, the number of physicians prescribing KORSUVA injection, the rate of monthly prescriptions, reimbursement from third-party payors including the U.S. government, the conversion of patients from our clinical trials to commercial customers, and market trends. More specifically, in December 2021, CMS granted TDAPA to KORSUVA injection in the anti-pruritic functional category. TDAPA went into effect on April 1, 2022, for a minimum of two years. On October 27, 2023, CMS published the final CY 2024 rule, which finalized the post-TDAPA add-on payment as proposed in the draft CY 2024 rule. Under the final rule, TDAPA drugs in existing functional categories will receive a post-TDAPA add-on payment set at 65 percent of the total trailing 12-months expenditure levels for the given renal dialysis drug or biological product. The post-TDAPA add-on payment will be applied to all ESRD PPS payments and paid for 3 years, adjusted annually. The add-on payments for KORSUVA injection will commence on April 1, 2024. The anticipated unfavorable CMS reimbursement codified in the final CY2024 rule resulted in a lack of sequential revenues growth for KORSUVA injection since its launch. For the year ended December 31, 2024, CSL Vifor recorded net sales of KORSUVA injection in the United States of approximately $2.1 million, which included negative net sales reported by CSL Vifor for the second and fourth quarters of 2024 primarily due to higher rebates and chargebacks due to price decreases on KORSUVA injection related to the expiration of TDAPA in April 2024. For the years ended December 31, 2023 and 2022, CSL Vifor recorded net sales of KORSUVA injection in the United States of approximately $26.5 million and $35.0 million, respectively. For the years ended December 31, 2024, 2023 and 2022, we recorded associated collaborative revenue of $2.1 million, $12.4 million and $16.6 million, respectively. However, we have recorded an expense in other G&A expense for approximately $1.6 million for the year ended December 31, 2024 as a result of the negative profit share amount in the second and fourth quarters of 2024. As a result of the final CY 2024 rule, we expect no meaningful revenue contribution from KORSUVA injection following the TDAPA period expiration.

In the third quarter of 2023, FMC decided to reallocate all remaining clinic level inventory within its network of clinics resulting in limited revenues in the fourth quarter of 2023 and the year ended December 31, 2024.

As of December 31, 2024, Vifor International owned 616,397, or 13.5%, of our common stock. CSL Vifor and its affiliates are all considered related parties as of December 31, 2024, 2023 and 2022 (see Note 21 of Notes to Consolidated Financial Statements, *Related Party Transactions*, in this Annual Report on Form 10-K).

### Cost of Goods Sold (COGS)

COGS includes costs related to sales of our commercial product, KORSUVA injection, to CSL Vifor. Costs related to the sales of KORSUVA injection are generally recognized upon receipt of shipment by CSL Vifor. Our COGS for KORSUVA injection include the cost of producing commercial product that correspond with commercial supply revenue, such as third-party supply and overhead costs, as well as certain period costs related to freight, packaging, stability, and quality testing. The related COGS for CSL Vifor associated with the net profit share arrangement as well as the marketing and distribution fee for the applicable period reduces our profit share revenue for the period.

For the years ended December 31, 2024 and 2023, we recorded commercial supply revenue of $0.6 million and $5.8 million, respectively, with associated COGS of $0.6 million and $6.2 million, respectively. For the year ended December 31, 2022, we recorded commercial supply revenue of $10.2 million, with associated COGS of $7.3 million. In January 2022, we recorded commercial supply revenue of $2.3 million, with no associated COGS as all inventory costs were incurred prior to receipt of regulatory approval of KORSUVA injection and, accordingly, were expensed as incurred. For the remainder of 2022, we recorded commercial supply revenue of $7.9 million, with associated COGS of $7.3 million as these inventory costs were incurred subsequent to the receipt of regulatory approval of KORSUVA injection and, accordingly, were capitalized as inventory. We expect our COGS to be reflective of future KORSUVA injection sales.

### Research and Development (R&D)

Our R&D expenses relate primarily to the development of oral difelikefalin. R&D expenses consist of expenses incurred in performing R&D activities, including compensation and benefits for full-time R&D employees, clinical trial and related clinical manufacturing expenses, third-party formulation expenses or milestone payments, fees paid to CROs and other consultants, stock-based compensation for R&D employees and consultants, and other outside expenses. Our R&D expenses also included expenses related to preclinical activities for our earlier stage programs in prior periods and may include such expenses in the future.

R&D costs are expensed as incurred. Non-refundable advance payments for goods or services to be received in the future for use in R&D activities are deferred and capitalized. The capitalized amounts are expensed as the related goods are delivered or the services are performed. Most of our R&D costs have been external costs, which we track on a program-by-program basis. Our internal R&D costs are primarily compensation expenses for our full-time R&D employees. We do not track internal R&D costs on a program-by-program basis.

R&D activities have been central to our business model. Based on our announcement that we discontinued our NP program, we presently expect that our R&D expenses will significantly decrease in the future as we focus on the Merger or exploring other strategic alternatives to maximize shareholder value if the Merger is not consummated. However, it is difficult to determine with certainty the duration and completion costs in connection with the discontinuation of our studies in NP or future nonclinical and clinical studies of our current or any future product candidates, should we resume the development of any future product candidates, or if, when or to what extent we will generate revenues from the commercialization and sale of any of our product candidates that obtain regulatory approval, should we resume the development of any future product candidates. We may never succeed in achieving regulatory approval for oral difelikefalin or any future product candidates, should we resume the development of oral difelikefalin or any future product candidates.

The duration, costs and timing of clinical trials and development of future product candidates, should we resume the development of any future product candidates, will depend on a variety of factors including, but not limited to:

- per patient trial costs;
- the number of patients that participate in the trials;
- the number of sites included in the trials;
- the countries in which the trial is conducted;
- the length of time required to enroll eligible patients;
- the number of doses that patients receive;
- the drop-out or discontinuation rates of patients;
- potential additional safety monitoring or other studies requested by regulatory agencies;
- the duration of patient follow-up; and
- the efficacy and safety profile of the product candidate.

In addition, the probability of success for future product candidates, should we resume the development of any future product candidates, will depend on numerous factors, including competition, manufacturing capability and commercial viability. In the future, should we resume the development of any future product candidates, we will determine which, if any, other programs to pursue and how much to fund each program in response to the scientific and clinical success of future product candidates, as well as an assessment of our future product candidates’ commercial potential.

### General and Administrative (G&A)

G&A expenses consist primarily of salaries and other related costs, including stock-based compensation, for personnel in executive, finance, accounting, legal, business development, information technology, or IT, human resources, project management, alliance management, and procurement functions. Other costs include facility costs not otherwise included in R&D expenses, legal fees, insurance costs, investor relations costs, patent costs and fees for accounting and consulting services.

We anticipate that our G&A expenses will decrease in the future as a result of our workforce reductions during the year ended December 31, 2024. However, G&A expenses will continue to include costs related to remaining personnel, fees to outside consultants, lawyers, and accountants, as well as costs associated with the proposed Merger or any other potential strategic alternatives, which could offset the decreases from workforce reductions. In addition, if any future product candidate obtains regulatory approval for marketing, should we resume the development of any future product candidates, we may incur expenses associated with building sales and marketing, commercial operations, and market access teams.

Our license agreements with CSL Vifor provide full U.S. commercialization rights of KORSUVA injection to CSL Vifor under profit-sharing arrangements. Under these profit-sharing arrangements, in consideration of CSL Vifor’s conduct of the marketing, promotion, selling and distribution of KORSUVA injection in the United States, we pay a marketing and distribution fee to CSL Vifor based on the level of annual net sales. This fee as well as CSL Vifor’s COGS are deducted from product sales in calculating the net profits that are subject to the profit-sharing arrangement (see Note 13 of Notes to Consolidated Financial Statements, C*ollaboration and Licensing Arrangements*, in this Annual Report on Form 10-K).

### Restructuring

In January 2024, we announced a workforce reduction of up to 50% of our employees in order to reduce our operating expenses and focus our efforts on development of oral difelikefalin in chronic pruritus associated with NP. On

June 14, 2024, our Board of Directors approved a streamlined operating plan exploring strategic alternatives focused on maximizing shareholder value after we announced our decision to discontinue the clinical program in NP on June 12, 2024. Our decision to discontinue the clinical program in NP followed the outcome from the dose-finding Part A of the KOURAGE-1 study evaluating the efficacy and safety of oral difelikefalin for moderate-to-severe pruritus in adult patients with NP in which oral difelikefalin did not demonstrate a meaningful clinical benefit at any dose compared to placebo. Our decision was not related to any safety or medical issues, or negative regulatory feedback related to our NP program. In connection with the streamlined operating plan, our Board of Directors also approved a second reduction in our workforce by approximately 70%, which we substantially completed by June 30, 2024. As of the date of this filing, we have ten employees that are currently working for us.

Restructuring expenses consist of pre-tax severance and employee-related costs for those involuntary terminations associated with the discontinuation of our oral programs in atopic dermatitis and chronic kidney disease in December 2023 and January 2024, respectively, the discontinuation of our oral program in NP in June 2024, and the related workforce reductions in 2024 (see Note 19 of Notes to Consolidated Financial Statements, C*ommitments and Contingencies – Restructuring Actions*, in this Annual Report on Form 10-K).

### Other Income, Net

Other income, net consists of interest and dividend income earned on our cash, cash equivalents, and marketable securities, realized gains and losses on the sale of marketable securities and property and equipment, as well as accretion of discounts/amortization of premiums on purchases of marketable securities. In the event we record a credit loss expense on our available-for-sale debt securities, those expenses would be offset against other income.

### Impairment of Long-Lived Assets

We periodically analyze the recorded values of our long-lived assets for impairment whenever events or changes in business circumstances indicate that the carrying amount of an asset or group of assets may not be fully recoverable. In these cases, we record an impairment charge during the period in which any impairment of our long-lived assets is determined, negatively affecting our results of operations. This impairment charge is recognized separately on the Consolidated Statement of Comprehensive Loss for the year ended December 31, 2024.

### Inventory Write-Down

We periodically analyze our inventory levels to identify inventory that may expire prior to expected sale or has a cost basis in excess of its estimated realizable value and write down such inventories as appropriate. In addition, our product is subject to strict quality control and monitoring which we perform throughout the manufacturing process. If certain batches or units of product no longer meet quality specifications or become obsolete due to expiration, we record a charge to write down such unmarketable inventory to its estimated realizable value. This inventory write-down charge is recognized separately on the Consolidated Statement of Comprehensive Loss for the year ended December 31, 2024.

### Non-cash Interest Expense on Liability Related to Sales of Future Royalties and Milestones

Non-cash interest expense on liability related to sales of future royalties and milestone payments, which are received in conjunction with ex-U.S. sales of KORSUVA/Kapruvia under our agreements with CSL Vifor and Maruishi, consists of imputed interest on the carrying value of the liability and the amortization of the related issuance costs resulting from the Original HCR Agreement (see “Royalty Purchase and Sale Agreement” above). This non-cash interest expense is recognized separately on the Consolidated Statement of Comprehensive Loss for the years ended December 31, 2024 and 2023.

### Income Taxes

Historically, our benefit from income taxes related to state R&D tax credits exchanged for cash pursuant to the Connecticut R&D Tax Credit Exchange Program, which permits qualified small businesses engaged in R&D activities within Connecticut to exchange their unused R&D tax credits for a cash amount equal to 65% of the value of the exchanged credits.

We account for income taxes using the asset and liability method. Under this method, deferred tax assets and liabilities are determined based on differences between the financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. Deferred income tax assets are reduced, as necessary, by a valuation allowance when we determine it is more likely than not that some or all of the tax benefits will not be realized.

There were no material uncertain tax positions taken as of December 31, 2024, 2023 and 2022. We do not have any interest or penalties accrued related to tax positions as we do not have any unrecognized tax benefits. In the event we determine that accrual of interest or penalties are necessary in the future, the amount will be presented as a component of interest expense.

The Inflation Reduction Act of 2022 included tax legislation that became effective early in 2023. Significant legislation for corporate taxpayers includes a corporate alternative minimum tax of 15.0% for companies with $1.0 billion or more in average net financial statement profits over the three previous years, as well as a 1.0% indirect excise tax on the repurchase of shares by a publicly traded company. We do not expect this legislation to have an effect on our tax provision.

Further, beginning in our tax year ending December 31, 2022, as a result of the TCJA, current R&D expenditures incurred in the United States must be capitalized for tax purposes, and amortized over a period of five years (fifteen years in the case of R&D performed outside the United States). As such, the deferred tax asset for intangible assets will materially increase in lieu of NOL carryforwards, offset by a change in valuation allowance.

### Results of Operations

### Comparison of the years ended December 31, 2024, 2023 and 2022

### Revenue

*Dollar amounts in thousands*

| ​ ​ ​ ​ ​ | ​ ​ ​ ​ | ​ ​ Year Ended December 31, 2024 ​ ​ | ​ ​ | ​ ​ ​ % change ​ | ​ ​ 2023 ​ ​ | ​ ​ | ​ ​ ​ % change ​ | ​ ​ 2022 ​ ​ |
| --- | --- | --- | --- | ---: | --- | --- | ---: | --- |
| Collaborative revenue | ​ | $2,086 | ​ | (84)% | $12,936 | ​ | (22)% | $16,572 |
| Commercial supply revenue | ​ | ​ 640 | ​ | (89)% | ​ 5,843 | ​ | (43)% | ​ 10,223 |
| License and milestone fees | ​ | ​ — | ​ | (100)% | ​ 910 | ​ | (94)% | ​ 15,000 |
| Royalty revenue | ​ | ​ — | ​ | (100)% | ​ 415 | ​ | 476% | ​ 72 |
| Clinical compound revenue | ​ | 84 |  | (49)% | 165 |  | N/A ​ | — |
| Other revenue | ​ | ​ 4,327 | ​ | 519% | ​ 699 | ​ | N/A ​ | ​ — |
| Total revenue | ​ | $7,137 |  | (66)% | $20,968 |  | (50)% | $41,867 |

#### Collaborative Revenue

We recognized collaborative revenue of $2.1 million, $12.9 million and $16.6 million for the years ended December 31, 2024, 2023 and 2022, respectively. This change in collaborative revenue for all periods was primarily related to our share of the profit from CSL Vifor’s sales of KORSUVA injection to third parties in the United States, which commercially launched in April 2022. The amount included in the year ended December 31, 2024 included negative profit share from negative net sales recorded by CSL Vifor for the second and fourth quarters of 2024 primarily due to higher rebates and chargebacks due to price decreases on KORSUVA injection related to the expiration of TDAPA in April 2024. The negative profit share of $1.6 million was recorded as expense in other G&A expenses. Collaborative revenue for the year ended December 31, 2023 also included $0.5 million that we earned in conjunction with the regulatory approval of KORSUVA injection in Japan for a milestone payment we earned in September 2023 from Maruishi that was allocated to the R&D services performance obligation under the Maruishi Agreement (see Notes 13 and 14 of Notes to Consolidated Financial Statements, *Collaboration and Licensing Agreements* and *Revenue Recognition*, respectively, in this Annual Report on Form 10-K).

#### Commercial Supply Revenue

We recognized commercial supply revenue of $0.6 million, $5.8 million, and $10.2 million for the years ended December 31, 2024, 2023 and 2022, respectively. These changes in commercial supply revenue for all periods were related to our sales of KORSUVA injection to CSL Vifor, which commercially launched in April 2022.

#### License and milestone fee revenue

There was no license and milestone fees revenue for the year ended December 31, 2024. We recognized license and milestone fees revenue of $0.9 million for the year ended December 31, 2023, in conjunction with the regulatory approval of KORSUVA injection in Japan for a milestone payment we earned in September 2023 from Maruishi that was allocated to the license and milestone fee performance obligation under the Maruishi Agreement (see Notes 13 and 14 of Notes to Consolidated Financial Statements, *Collaboration and Licensing Agreements* and *Revenue Recognition*, respectively, in this Annual Report on Form 10-K).

We recognized license and milestone fees revenue of $15.0 million for the year ended December 31, 2022, in conjunction with the regulatory milestone payment earned from CSL Vifor for the approval of Kapruvia by the European Commission in April 2022 (see Notes 13 and 14 of Notes to Consolidated Financial Statements, *Collaboration and Licensing Agreements* and *Revenue Recognition*, respectively, in this Annual Report on Form 10-K).

#### Royalty revenue

We recognized royalty revenue of approximately $0.4 million and $0.1 million for the years ended December 31, 2023 and 2022, respectively, which were related to our royalties on the net sales of Kapruvia in Europe prior to October 1, 2023. Beginning on October 1, 2023, royalty revenue will no longer be recognized until we have fulfilled our obligations under the Original HCR Agreement (see “Royalty Purchase and Sale Agreement” above). As a result, there was no royalty revenue for the year ended December 31, 2024.

#### Clinical compound revenue

We recognized clinical compound revenue of approximately $0.1 million and $0.2 million for the years ended December 31, 2024 and 2023, respectively, which were related to sales of clinical compound to Maruishi. There was no clinical compound revenue for the year ended December 31, 2022 (see Note 14 of Notes to Consolidated Financial Statements, *Revenue Recognition*, in this Annual Report on Form 10-K).

#### Other revenue

We recognized non-cash revenue of approximately $4.3 million and $0.7 million for the years ended December 31, 2024 and 2023, which represent royalty payments earned in conjunction with ex-U.S. sales of KORSUVA/Kapruvia under our agreements with CSL Vifor and Maruishi, which were sold to HCR under the Original HCR Agreement. There was no non-cash revenue recognized during the year ended December 31, 2022.

### Cost of Goods Sold (COGS)

*Dollar amounts in thousands*

| ​ ​ ​ ​ ​ | ​ ​ ​ ​ | ​ ​ Year Ended December 31, 2024 ​ ​ | ​ ​ | ​ ​ ​ % change ​ | ​ ​ 2023 ​ ​ | ​ ​ | ​ ​ ​ % change ​ | ​ ​ 2022 ​ ​ |
| --- | --- | ---: | --- | ---: | ---: | --- | ---: | ---: |
| Cost of Goods Sold | ​ | $620 | ​ | (90)% | $6,174 | ​ | (15)% | $7,266 |

99

During the years ended December 31, 2024, 2023 and 2022, we recorded COGS of $0.6 million, $6.2 million and $7.3 million, respectively, which was related to our commercial supply revenue for KORSUVA injection sales to CSL Vifor. The decrease in 2024 is related to our commercial supply revenue decrease as described above.

As commercialization of KORSUVA began in April 2022, no associated COGS was recorded for commercial supply revenue of $2.3 million in January 2022 as all inventory costs were incurred prior to receipt of regulatory approval of KORSUVA injection, and accordingly, were expensed as incurred (see Note 2 of Notes to Consolidated Financial Statements, *Summary of Significant Accounting Policies – Inventory, net* and *Cost of Goods Sold (COGS)*, in this Annual Report on Form 10-K).

### Research and Development (R&D) Expense

*Dollar amounts in thousands*

| ​ ​ ​ ​ ​ | ​ ​ ​ ​ | ​ ​ Year Ended December 31, 2024 ​ ​ | ​ ​ | ​ ​ ​ ​ % change | ​ ​ 2023 ​ ​ | ​ ​ | ​ ​ ​ ​ % change | ​ ​ 2022 ​ ​ |
| --- | --- | ---: | --- | ---: | ---: | --- | ---: | ---: |
| Direct clinical trial costs | ​ | $22,811 | ​ | (66)% | $67,434 | ​ | 39% | $48,668 |
| Consultant services in support of clinical trials | ​ | 1,096 |  | (78)% | 5,055 |  | (8)% | 5,467 |
| Stock-based compensation | ​ | 1,264 |  | (80)% | 6,449 |  | (19)% | 7,987 |
| Depreciation and amortization | ​ | 50 |  | (61)% | 129 |  | 8% | 120 |
| Other R&D operating expenses | ​ | 7,584 |  | (74)% | 29,443 |  | (1)% | 29,637 |
| Total R&D expense | ​ | $32,805 |  | (70)% | $108,510 |  | 18% | $91,879 |

For the year ended December 31, 2024 compared to the year ended December 31, 2023, the $48.6 million decrease in direct clinical trial costs and consultant services in support of clinical trials was primarily due to decreases related to the discontinuation of our oral difelikefalin atopic dermatitis program due to the clinical trial results announced in December 2023, the discontinuation of our oral difelikefalin program in advanced chronic kidney disease in January 2024, decreases related to our former oral difelikefalin NP program which was discontinued due to the clinical trial results announced in June 2024, and decreases in supportive studies and other general costs associated with oral difelikefalin. The decrease in stock compensation expense is primarily related to the reductions in workforce during the year ended December 31, 2024, partially offset by non-cash expense associated with the vesting of performance-based restricted stock units upon the achievement of vesting milestones of these awards in March 2024. The decrease in other R&D operating expenses for the year ended December 31, 2024 compared to the year ended December 31, 2023 was primarily related to decreases in payroll and related costs, travel costs and other related conference costs. Other R&D operating expenses for the year ended December 31, 2023 also included $1.7 million related to the agreement with Patheon for forecasted manufacturing commitments that were no longer needed due to the reduced demand expectations of KORSUVA in the United States.

For the year ended December 31, 2023 compared to the year ended December 31, 2022, the $18.8 million increase in direct clinical trial costs was primarily due to the increases in clinical trial spend related to our three late-stage oral difelikefalin programs in 2023. These increases were partially offset by decreases related to the Phase 2 clinical trial for chronic pruritus associated with NP, costs associated with supportive Phase 1 oral difelikefalin studies, and other general costs associated with our oral difelikefalin programs. In December 2023, we announced that we discontinued the atopic dermatitis program due to clinical trial results and in January 2024, we announced the discontinuation of the advanced chronic kidney disease program to focus on NP only. The decrease in stock compensation expense is primarily related to lower grant date fair values for new option grants during the year ended December 31, 2023, and lower stock compensation expense related to time-based restricted stock units that vested in February 2023. Other R&D operating expenses for the year ended December 31, 2023 included $1.7 million related to the agreement with Patheon for forecasted manufacturing commitments that are no longer needed due to the reduced demand expectations of KORSUVA in the United States, as well as increased payroll-related costs as compared to the prior period. Other R&D operating expenses for the year ended December 31, 2022 included the recognition of the $5.0 million milestone payment due to Enteris.

The following table summarizes our R&D expenses by product candidate for the years ended December 31, 2024, 2023 and 2022:

*Dollar amounts in thousands*

| ​ ​ ​ ​ ​ External research and development expenses: | ​ ​ ​ ​ ​ ​ | ​ ​ Year Ended December 31, 2024 ​ ​ ​ ​ | ​ ​ ​ ​ % change ​ ​ ​ | ​ ​ 2023 ​ ​ ​ ​ | ​ ​ ​ ​ % change ​ ​ ​ | ​ ​ 2022 ​ ​ ​ ​ |
| --- | --- | ---: | ---: | ---: | ---: | ---: |
| KORSUVA (difelikefalin) injection - Pruritus | ​ | $— | N/A ​ | $— | (100)% | $6,692 |
| Oral difelikefalin - Pruritus | ​ | 23,888 | (67)% | 72,475 | 52% | 47,814 |
| Internal research and development expenses/milestone payments1 | ​ | 8,917 | (75)% | 36,035 | (4)% | 37,373 |
| Total research and development expenses | ​ | $32,805 | (70)% | $108,510 | 18% | $91,879 |

1 Includes a milestone payment of $5.0 million to Enteris for the year ended December 31, 2022.

### General and Administrative (G&A) Expense

*Dollar amounts in thousands*

| ​ ​ ​ ​ ​ | ​ ​ ​ ​ ​ | ​ ​ Year Ended December 31, 2024 ​ ​ | ​ ​ | ​ ​ ​ ​ % change | ​ ​ 2023 ​ ​ | ​ ​ | ​ ​ ​ ​ % change | ​ ​ 2022 ​ ​ |
| --- | --- | ---: | --- | ---: | ---: | --- | ---: | ---: |
| Professional fees and public/investor relations | ​ | $7,355 | ​ | 18% | $6,228 | ​ | (1)% | $6,322 |
| Stock-based compensation | ​ | 7,664 |  | 5% | 7,281 |  | (25)% | 9,747 |
| Depreciation and amortization | ​ | 142 |  | 9% | 130 |  | 2% | 128 |
| Other G&A operating expenses | ​ | 11,369 |  | (20)% | 14,140 |  | 1% | 14,060 |
| Total G&A expense | ​ | $26,530 |  | (4)% | $27,779 |  | (8)% | $30,257 |

For the year ended December 31, 2024 compared to the year ended December 31, 2023, the increase in professional fees and public/investor relations was primarily due to increases in legal costs related to our announced merger with Tvardi. Stock-based compensation was relatively flat in 2024 compared to 2023. The decrease in other G&A operating expenses for the year ended December 31, 2024 compared to the year ended December 31, 2023 was primarily related to decreases in payroll and related costs, franchise taxes, travel costs and other related conference costs, partially offset by our negative profit share amounts recorded for CSL Vifor’s negative net sales for the second and fourth quarters of 2024, and Patheon minimum manufacturing orders of $0.6 million in 2024.

For the year ended December 31, 2023 compared to the year ended December 31, 2022, the decrease in stock-based compensation expense was primarily related to higher expenses recorded during the year ended December 31, 2022 for the modification of our former CEO’s equity awards, and certain performance-based restricted stock units that vested during the year ended December 31, 2022.

### Restructuring Expenses

*Dollar amounts in thousands*

| ​ ​ ​ ​ ​ | ​ ​ ​ ​ | ​ ​ Year Ended December 31, 2024 ​ ​ | ​ ​ | ​ ​ % change | ​ ​ | ​ ​ 2023 ​ ​ | ​ ​ | ​ ​ % change | ​ ​ | ​ ​ 2022 ​ ​ |
| --- | --- | ---: | --- | --- | --- | ---: | --- | --- | --- | ---: |
| Restructuring expenses | ​ | $5,565 | ​ | N/A | ​ | $— | ​ | N/A | ​ | $— |

For the year ended December 31, 2024, restructuring expenses were $5.6 million which were related to our strategic prioritization of NP in January 2024, the subsequent discontinuation of our NP program in June 2024, our exploration of strategic alternatives to maximize shareholder value, and the associated workforce reductions during the year. There were no restructuring expenses recorded during the years ended December 31, 2023 and 2022.

### Other Income, Net

*Dollar amounts in thousands*

| ​ ​ ​ ​ ​ | ​ ​ ​ ​ | ​ ​ Year Ended December 31, 2024 ​ ​ | ​ ​ | ​ ​ ​ % change ​ | ​ ​ 2023 ​ ​ | ​ ​ | ​ ​ ​ % change ​ | ​ ​ 2022 ​ ​ |
| --- | --- | ---: | --- | ---: | ---: | --- | ---: | ---: |
| Other income, net | ​ | $2,828 | ​ | (21)% | $3,586 | ​ | 74% | $2,061 |

For the year ended December 31, 2024 compared to the year ended December 31, 2023, the decrease in other income, net was primarily due to a decrease in interest income resulting from a lower balance in our portfolio of investments in 2024 as compared to 2023, partially offset by an increase in accretion income from our available-for-sale marketable securities in the 2024 period as compared to the prior period.

For the year ended December 31, 2023 compared to the year ended December 31, 2022, the increase in other income, net was primarily due to an increase in interest income resulting from a higher yield on our portfolio of investments during the year ended December 31, 2023 and an increase in accretion income from our available-for-sale marketable securities.

### Impairment of Long-Lived Assets

*Dollar amounts in thousands*

| ​ ​ ​ ​ ​ | ​ ​ ​ ​ | ​ ​ Year Ended December 31, 2024 ​ ​ | ​ ​ | ​ ​ % change | ​ ​ | ​ ​ 2023 ​ ​ | ​ ​ | ​ ​ % change | ​ ​ | ​ ​ 2022 ​ ​ |
| --- | --- | ---: | --- | --- | --- | ---: | --- | --- | --- | ---: |
| Impairment of long-lived assets | ​ | $4,274 | ​ | N/A | ​ | $— | ​ | N/A | ​ | $— |

For the year ended December 31, 2024, we recognized a $4.3 million full impairment charge on our right of use asset after determining that none of the carrying value was recoverable as a result of the assignment of our corporate lease in September 2024. There were no impairments of long-lived assets recognized during the years ended December 31, 2023 and 2022 (see Note 19 of Notes to Consolidated Financial Statements, *Commitments and Contingencies – Assignment of New Lease*, in this Annual Report on Form 10-K).

### Inventory Write-Down

*Dollar amounts in thousands*

| ​ ​ ​ ​ ​ | ​ ​ ​ ​ | ​ ​ Year Ended December 31, 2024 ​ ​ | ​ ​ | ​ ​ % change | ​ ​ | ​ ​ 2023 ​ ​ | ​ ​ | ​ ​ % change | ​ ​ | ​ ​ 2022 ​ ​ |
| --- | --- | ---: | --- | --- | --- | ---: | --- | --- | --- | ---: |
| Inventory write-down | ​ | $2,963 | ​ | N/A | ​ | $— | ​ | N/A | ​ | $— |

For the year ended December 31, 2024, we wrote down approximately $3.0 million of commercial supply inventory due to obsolescence (see Note 5 of Notes to Consolidated Financial Statements, *Inventory, net*, in this Annual Report on Form 10-K).

### Non-cash Interest Expense on Liability Related to the Sales of Future Royalties and Milestones

*Dollar amounts in thousands*

| ​ ​ ​ ​ ​ | ​ ​ ​ ​ | ​ ​ Year Ended December 31, 2024 ​ ​ | ​ ​ ​ ​ ​ ​ % change | ​ ​ 2023 ​ ​ | ​ ​ ​ ​ % change | ​ ​ | ​ ​ 2022 ​ ​ |
| --- | --- | ---: | ---: | ---: | --- | --- | ---: |
| Non-cash interest expense on liability related to sales of future royalties and milestones | ​ | $8,473 | 1,303% | $604 | N/A | ​ | $— |

We recognized $8.5 million and $0.6 million of non-cash interest expense on the liability related to sales of future royalties and milestones for the years ended December 31, 2024 and 2023, respectively, which represented imputed interest on the carrying value of the liability to HCR and the amortization of the related issuance costs associated with the Original HCR Agreement. There was no non-cash interest expense on liability recognized during the year ended December 31, 2022 as the Original HCR Agreement was entered into in November 2023 (see “Royalty Purchase and Sale Agreement” above).

### Benefit from Income Taxes

In the fourth quarter of 2024, we decided to exchange our R&D tax credit incurred during the year ended December 31, 2023. We opted not to exchange our R&D tax credit incurred during the year ended December 31, 2024, and were not eligible to exchange our R&D tax credit for cash during the year ended December 31, 2022. Therefore, there was a benefit from income taxes of $0.4 million for the year ended December 31, 2024, and no benefit from income taxes for each of the years ended December 31, 2023 and 2022.

We recognized a full valuation allowance against deferred tax assets at December 31, 2024, 2023 and 2022. The tax benefit related to the exercise of stock options is recognized as a deferred tax asset that is offset by a corresponding valuation allowance. As such, our effective tax rate for the years ended December 31, 2024, 2023 and 2022 is 0.56%, 0% and 0%, respectively.

### Cash Requirements, Liquidity, and Capital Resources

### Short-Term and Long-Term Cash Requirements

Our primary uses of capital have been third-party clinical R&D services, clinical costs related to the oral difelikefalin program, and compensation and related expenses. As of December 31, 2024, we have no commitments for capital expenditures in either the short-term or long-term.

Based on the Enteris License Agreement that we entered into in August 2019, we are obligated to pay (1) milestone payments upon the achievement of certain development, regulatory and commercial milestones and (2) low-single digit royalty percentages on net sales of licensed products, subject to reductions in specified circumstances. As these milestone payments may or may not be achieved, and royalties may or may not be owed depending on our future commercial success, there were no future potential payments that are considered short-term or long-term cash requirements as of December 31, 2024. We did not make any milestone payments to Enteris during the years ended December 31, 2024 and 2023. During the year ended December 31, 2022, we made a milestone payment of $5.0 million to Enteris. See Note 19 of Notes to Consolidated Financial Statements, *Commitments and Contingencies*, in this Annual Report on Form 10-K for details about our Enteris License Agreement.

During the fourth quarter of 2023, we, through our wholly-owned subsidiary Cara Royalty Sub, entered into the Original HCR Agreement with HCR pursuant to which Cara Royalty Sub sold to HCR certain of its rights to the Royalties, due and payable to Cara Royalty Sub (as our assignee) under our agreements with CSL Vifor and Maruishi, in exchange for up to $40.0 million. We have retained all of our rights, title and interest in, to and under the Covered License Agreements that relate to any non-intravenous formulation of difelikefalin. These future payments to HCR are not considered short-term or long-term cash requirements as of December 31, 2024, since the amounts and timing of royalty and milestone payments received under the agreements with CSL Vifor and Maruishi could change in the future as they are subject to CSL Vifor’s and Maruishi’s commercialization efforts (see “Royalty Purchase and Sale Agreement” above).

We do not have any other requirements or off-balance sheet arrangements that have or are reasonably likely to have a material current or future effect on our financial condition, changes in financial condition, revenues or expenses, results of operations, liquidity, cash requirements or capital resources.

Since inception, we have incurred significant operating and net losses. We incurred net losses of $70.9 million, $118.5 million and $85.5 million for the years ended December 31, 2024, 2023 and 2022, respectively. As of December 31, 2024, we had an accumulated deficit of $755.6 million. Our financial results may fluctuate significantly from quarter to quarter and year to year, depending on the timing of our clinical trials, should we resume the development of any future product candidates, and the future sales of KORSUVA.

We anticipate that our expenses will be focused on:

- the discontinuation of our clinical program for oral difelikefalin for chronic pruritus associated with NP; and
- the exploration of strategic alternatives to maximize shareholder value.

Should we resume the development of any future product candidate, the successful development of any future product candidate is highly uncertain. As such, at this time, we cannot reasonably estimate or know the nature, timing and costs of the efforts that will be necessary to complete the development of any future product candidate, should we resume the development of future product candidates. We are also unable to predict when, if ever, we will generate any further material net cash inflows from difelikefalin or any other future product candidate. This is due to the numerous risks and uncertainties associated with developing medicines, including the uncertainty of:

- successful enrollment in, and completion of clinical trials, should we resume the development of any future product candidates;
- receipt of marketing approvals from applicable regulatory authorities, should we resume the development of any future product candidates;
- establishing commercial manufacturing capabilities or making arrangements with third-party manufacturers, should we resume the development of any future product candidates;
- obtaining and maintaining patent and trade secret protection and regulatory exclusivity for difelikefalin or any future product candidate;
- launching commercial sales of the products, if and when approved, whether alone or in collaboration with others, should we resume the development of any future product candidates;
- achieving meaningful penetration in the markets which we seek to serve, should we resume the development of any future product candidates; and
- obtaining adequate coverage or reimbursement by third parties, such as commercial payers and government healthcare programs, including Medicare and Medicaid, should we resume the development of any future product candidates.

A change in the outcome of any of these variables with respect to the development of oral difelikefalin or any of our future product candidates, should we resume the development of oral difelikefalin or any future product candidates, would significantly change the costs and timing associated with the development of that product candidate. Further, the timing of any of the above may be impacted by global economic conditions and significant global events, should we resume the development of oral difelikefalin or any future product candidate, introducing additional uncertainty.

We currently are exploring strategic alternatives to maximize shareholder value, and in December 2024 we announced entrance into the Merger Agreement with Tvardi. If the Merger is not consummated, should we resume development of our product candidate or any future product candidates, we would require additional capital beyond our current balances of cash and cash equivalents and anticipated amounts as described above, and this additional capital may not be available when needed, on reasonable terms, or at all. Our ability to raise additional capital may be adversely impacted by potential worsening global economic conditions and continuing disruptions to and volatility in the credit and equity markets in the United States and worldwide, including impacts from global health crises, geopolitical tensions, such as the ongoing conflicts between Russia and Ukraine, conflict in the Middle East, and increasing tensions between China and Taiwan, and government actions implemented as a result of the foregoing, fluctuations in inflation, rising interest rates, uncertainty and liquidity concerns in the broader financial services industry, and a potential recession in the United States. To the extent that we raise additional capital through the future sale of equity or convertible debt, the ownership interest of our stockholders will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our existing common stockholders. If we raise additional funds through the issuance of debt securities, these securities could contain covenants that would restrict our operations. If we raise additional funds through collaboration arrangements in the future, we may have to relinquish valuable rights to our technologies, future revenue streams or product candidates or grant licenses on terms that may not be favorable to us.

### Sources of Liquidity

Since our inception to date, we have raised an aggregate of $943.8 million to fund our operations, including (1) net proceeds of $447.4 million from the sale of shares of our common stock in five public offerings, including our initial public offering and shares issued under our open market sales agreement in 2023; (2) proceeds of $73.3 million from the sale of shares of our convertible preferred stock and from debt financings prior to our initial public offering; (3) payments of $258.8 million under our license and supply agreements (including commercial supply sales and royalty payments), primarily with CSL Vifor, Maruishi, CKDP, and an earlier product candidate for which development efforts ceased in 2007; (4) our share of the profit generated by KORSUVA injection sales of $29.8 million; (5) net proceeds of $98.0 million from the purchase of our common stock in relation to the license agreements with CSL Vifor; and (6) net proceeds of $36.5 million from the sale of future ex U.S. royalties and milestones to HCR under our agreements with CSL Vifor and Maruishi (see Note 13 of Notes to Consolidated Financial Statements, *Collaboration and Licensing Agreements*, in this Annual Report on Form 10-K).

On June 14, 2024, our Board of Directors approved a streamlined operating plan exploring strategic alternatives focused on maximizing shareholder value after we announced our decision to discontinue the clinical program in NP following the outcome from the dose-finding Part A of the KOURAGE-1 study evaluating the efficacy and safety of oral difelikefalin for moderate-to-severe pruritus in adult patients with NP on June 12, 2024. After a comprehensive review of strategic alternatives, including identifying and reviewing potential candidates for the merger, on December 17, 2024, Cara entered into the Merger Agreement with Tvardi and Merger Sub, pursuant to which, subject to the satisfaction or waiver of the conditions therein, Merger Sub will merge with and into Tvardi, with Tvardi continuing as the surviving company and a wholly-owned subsidiary of Cara. This process includes substantial uncertainties, including whether we are able to implement any potential strategic alternatives, in a timely manner or at all, whether we realize all or any of the anticipated benefits of any such transaction and whether any such transactions would generate value for stockholders.

On December 17, 2024, following a comprehensive review of strategic alternatives, we entered into the Merger Agreement with Tvardi for the Merger. The Merger was unanimously approved by our Board of Directors, and our Board of Directors resolved to recommend approval of the Merger Agreement to our stockholders. The closing of the Merger is subject to approval by our and Tvardi’s stockholders, as well as other customary closing conditions. Substantially concurrent with the completion of the Merger, we will be renamed “Tvardi Therapeutics, Inc.” and expect to trade on The Nasdaq Capital Market under the symbol “TVRD” (see *Merger Agreement with Tvardi* and *Asset Disposition* above).

Also on December 17, 2024, in connection with the Merger Agreement, we and Cara Royalty Sub entered into the APA with Vifor Fresenius Medical Care Renal Pharma Ltd., pursuant to which, at the consummation of the Merger Agreement, we and Cara Royalty Sub will enter into the Asset Disposition with CSL Vifor, for a purchase price of $0.9 million (subject to certain adjustments with respect to inventory). Pursuant to the APA, in connection with the consummation of the Asset Disposition, CSL Vifor and HCR have entered into a letter agreement with us to amend and replace the Original HCR Agreement (see *Merger Agreement with Tvardi* and *Asset Disposition* above).

During the fourth quarter of 2023, we, through our wholly-owned subsidiary Cara Royalty Sub, entered into the Original HCR Agreement with HCR pursuant to which Cara Royalty Sub sold to HCR certain of its rights to receive the Royalties, due and payable to Cara Royalty Sub (as our assignee) under the Covered License Agreements, in exchange for up to $40.0 million. We have retained all of our rights, title and interest in, to and under the Covered License Agreements that relate to any non-intravenous formulation of difelikefalin.

Under the terms of the Original HCR Agreement, Cara Royalty Sub received an initial payment of $17.5 million less certain transaction costs in November 2023. In December 2023, we received an additional $20.0 million, less certain advisory fees, upon satisfying the milestone event for pricing for Kapruvia® (difelikefalin) in Germany being approved above a certain threshold amount per dose. An additional $2.5 million milestone payment is due to Cara Royalty Sub in the first quarter of 2025 for the achievement of a 2024 sales milestone of KORSUVA in Japan and is included within other receivables on our Consolidated Balance Sheet as of December 31, 2024.

In order to fund our future operations, including our planned clinical trials at the time, on March 1, 2022, we filed a universal shelf registration statement, or the Shelf Registration Statement, which provided for aggregate offerings of up to $300.0 million of common stock, preferred stock, debt securities, warrants or any combination thereof. The Shelf Registration Statement was declared effective by the Securities and Exchange Commission on May 11, 2022. The securities registered under the Shelf Registration Statement include $154.5 million of unsold securities that had been registered under our previous Registration Statement on Form S-3 (File No. 333-230333) that was declared effective on April 4, 2019. On March 6, 2024, the date we filed our Annual Report on Form 10-K for the fiscal year ended December 31, 2023, we became subject to the offering limits in General Instruction I.B.6 of Form S-3. Pursuant to General Instruction I.B.6 of Form S-3, in no event will we sell shares of our common stock under our Shelf Registration Statement with a value of more than one-third of our public float in any 12-month period, so long as our public float is less than $75.0 million. We have not offered and sold any shares of our common stock pursuant to General Instruction I.B.6 to Form S-3 during the prior 12 calendar month period that ends on and includes the date hereof.

On March 1, 2022, we entered into an open market sales agreement, or the Sales Agreement, with Jefferies LLC, or Jefferies, as sales agent, pursuant to which we may, from time to time, issue and sell common stock with an aggregate value of up to $80.0 million in an at-the-market offering pursuant to the Shelf Registration Statement. Jefferies is acting as the sole sales agent for any sales made under the Sales Agreement for a 3% commission on gross proceeds. In June 2024, we filed an amendment to the prospectus dated May 11, 2022 for the at-the-market offering, or the ATM Prospectus, to update the amount of shares of our common stock we are eligible to sell under General Instruction I.B.6 of Form S-3, as described above, and pursuant to the Sales Agreement. Pursuant to General Instruction I.B.6 of Form S-3, in no event will we sell shares of our common stock pursuant to the ATM Prospectus, as amended, with a value of more than one-third of our public float in any 12-month period, so long as our public float is less than $75.0 million. If our public float increases above $75.0 million such that we may sell additional amounts under the Sales Agreement and the ATM Prospectus, we will file another amendment to the ATM Prospectus prior to making additional sales in excess of the limitations of General Instruction I.B.6 of Form S-3. The common stock will be sold at prevailing market prices at the time of the sale, and, as a result, prices may vary. Unless otherwise terminated earlier, the Sales Agreement continues until all shares available under the Sales Agreement have been sold. During the year ended December 31, 2023, 32,240 shares were sold under the Sales Agreement and the Company received net proceeds of $1.1 million. During the years ended December 31, 2024 and 2022, no shares were sold under the Sales Agreement. In recognition of the decision by our Board of Directors to approve a streamlined operating plan exploring strategic alternatives, as described elsewhere in this report, we currently do not have any intention to sell shares pursuant to the Sales Agreement.

We may offer additional securities under our Shelf Registration Statement from time to time in response to market conditions or other circumstances if we believe such a plan of financing is in the best interests of our stockholders.

Under our agreement with CSL Vifor for the commercialization of KORSUVA injection, we are eligible to receive commercial milestone payments in the aggregate of up to $240.0 million from CSL Vifor upon the achievement of certain sales-based milestones. In October 2021, we received a $50.0 million milestone payment from CSL Vifor as a result of the regulatory approval of KORSUVA injection in August 2021. To date, we have received $50.0 million of regulatory milestones from CSL Vifor under this agreement.

Under a separate agreement with CSL Vifor, we are eligible to receive commercial milestone payments in the aggregate of up to $440.0 million, all of which are sales related. We are also eligible to receive tiered double-digit royalty payments based on annual net sales of difelikefalin injection in the licensed territories. In June 2022, we received a $15.0 million milestone payment from CSL Vifor as a result of the regulatory approval of Kapruvia by the European Commission in April 2022. In October 2021, we received a $15.0 million milestone payment from CSL Vifor as a result of the regulatory approval of KORSUVA injection in August 2021. To date, we have received $30.0 million of regulatory milestones from CSL Vifor. During the fourth quarter of 2023, we entered into the Original HCR Agreement where we sold our future royalties and milestone payments under this agreement to HCR (see “Royalty Purchase and Sale Agreement” above).

Under the Maruishi Agreement, we are also potentially eligible to earn up to an aggregate of $6.0 million in clinical development milestones and $4.5 million in regulatory milestones, before any foreign exchange adjustment, as well as tiered royalties, with percentages ranging from the low double digits to the low twenties, based on net sales of products containing difelikefalin in Japan, if any, and share in any sub-license fees. In May 2021, we received a $2.0 million milestone payment ($1.9 million after contractual foreign currency exchange adjustments) for Maruishi’s first initiation of a Phase 3 trial for uremic pruritus in Japan in January 2021. In September 2023, Maruishi received manufacturing and marketing approval from Japan’s Ministry of Health, Labour and Welfare for KORSUVA IV Injection Syringe for the treatment of pruritus in hemodialysis patients. In conjunction with the approval, we earned a $2.0 million milestone payment ($1.4 million after contractual foreign currency exchange adjustments) per the terms of the licensing agreement. To date, we have received $6.5 million (before contractual foreign currency exchange adjustments) of clinical development and regulatory milestone from Maruishi. During the fourth quarter of 2023, we entered into the Original HCR Agreement where we sold our future royalties and milestone payments to HCR (see “Royalty Purchase and Sale Agreement” above).

Under the CKDP Agreement, we are potentially eligible to earn up to an aggregate of $2.3 million in clinical development milestones and $1.5 million in regulatory milestones, before South Korean withholding tax, as well as tiered royalties with percentages ranging from the high single digits to the high teens, based on net sales of products containing difelikefalin in South Korea, if any, and share in any sub-license fees. To date, $2.3 million (before South Korean withholding tax) of development and regulatory milestones have been received under the CKDP Agreement.

In December 2021, CMS granted TDAPA designation to KORSUVA injection in the anti-pruritic functional category. TDAPA went into effect on April 1, 2022, for a minimum of two years. On October 27, 2023, CMS published the final CY 2024 rule, which finalized the post-TDAPA add-on as proposed in the draft CY 2024 rule. Under the final rule, TDAPA drugs in existing functional categories will receive a post-TDAPA add-on payment set at 65 percent of the total trailing 12-months expenditure levels for the given renal dialysis drug or biological product. The post-TDAPA add-on payment adjustment will be applied to all ESRD PPS payments and paid for 3 years, adjusted annually. The add-on payments for KORSUVA injection will commence on April 1, 2024. The unfavorable CMS reimbursement codified in the final CY2024 rule has resulted in a lack of sequential revenue growth for KORSUVA injection since its launch. As a result, we expect no meaningful revenue contribution from KORSUVA injection post its TDAPA expiration.

Our ability to earn these milestone and royalty payments and their timing is dependent upon successful commercialization of KORSUVA injection/Kapruvia, and successful future repayments made to HCR using CSL Vifor and Maruishi milestones and royalties under the Original HCR Agreement. However, our receipt of any further such amounts is uncertain at this time, and we may never receive any more of these amounts.

### Outlook

As a result of the discontinuation of our clinical NP program, our workforce reductions in 2024, and our exploration of strategic alternatives to maximize shareholder value, including the Merger, we expect that our current unrestricted cash and cash equivalents will be sufficient to fund our currently anticipated operating plan for at least the next 12 months. Our anticipated operating expenses include contractually committed costs based on our Board of Directors’ new strategic plan. It is possible that the assumptions upon which we have based this estimate may prove to be wrong, and we could use our capital resources sooner than we presently expect.

### Cash Flows

The following is a summary of the net cash flows provided by (used in) our operating, investing and financing activities for the years ended December 31, 2024, 2023 and 2022:

*Dollar amounts in thousands*

| ​ ​ ​ ​ | ​ ​ ​ | ​ ​ Year Ended December 31, 2024 | ​ | ​ ​ 2023 | ​ | ​ ​ 2022 |
| --- | --- | ---: | --- | ---: | --- | ---: |
| Net cash used in operating activities | ​ | $(60,917) | ​ | $(92,078) | ​ | $(78,730) |
| Net cash provided by investing activities | ​ | 48,741 | ​ | 43,461 | ​ | 128,707 |
| Net cash (used in) provided by financing activities | ​ | (3,604) | ​ | 38,151 | ​ | 311 |
| Net (decrease) increase in cash, cash equivalents and restricted cash | ​ | $(15,780) | ​ | $(10,466) | ​ | $50,288 |

### Net cash used in operating activities

Net cash used in operating activities for the year ended December 31, 2024 consisted primarily of a net loss of $70.9 million and a $15.1 million cash outflow from net changes in operating assets and liabilities, partially offset by a $25.1 million cash inflow from net non-cash charges. The change in operating assets and liabilities primarily consisted of a decrease in accounts payable and accrued expenses of $21.4 million for payments made throughout 2024, and a cash outflow of $4.4 million relating to operating lease liabilities associated with the termination of our corporate lease, partially offset by a decrease in prepaid expenses of $7.6 million, primarily related to prepaid clinical costs, a decrease in accounts receivable, net – related party of $2.4 million as a result of payments received from CSL Vifor and negative profit share for fourth quarter of 2024, and lease incentives of $2.1 million from our corporate office lease being received in 2024. Net non-cash charges primarily consisted of stock-based compensation expense of $8.9 million, non-cash interest expense related to the Original HCR Agreement of $8.5 million, a $4.3 million impairment of long-lived assets, and $3.0 million of inventory write-downs during the 2024 period.

Net cash used in operating activities for the year ended December 31, 2023 consisted primarily of a net loss of $118.5 million, partially offset by a $16.3 million cash inflow from net non-cash charges and a $10.2 million cash inflow from net changes in operating assets and liabilities. Net non-cash charges primarily consisted of stock-based compensation expense of $13.7 million, and the noncash lease expense of $2.1 million relating to our current and former Stamford operating leases. The change in operating assets and liabilities primarily consisted of cash inflows from a decrease in prepaid expenses of $8.1 million, primarily related to prepaid clinical costs, an increase in accounts payable and accrued expenses of $3.3 million due to increased expenses in the period, and an $0.8 million reimbursement of a lease incentive under our new lease agreement that we entered into in May 2023, partially offset by a cash outflow of $1.9 million relating to operating lease liabilities associated with former lease agreements for our former operating facility in Stamford, Connecticut.

Net cash used in operating activities for the year ended December 31, 2022 consisted primarily of a net loss of $85.5 million and a $12.9 million cash outflow from net changes in operating assets and liabilities, partially offset by a $19.7 million cash inflow from net non-cash charges. The change in operating assets and liabilities primarily consisted of an increase in prepaid expenses of $13.7 million, primarily related to an increase in prepaid clinical costs, an increase of $3.3 million in accounts receivable, net – related party primarily relating to amounts due from CSL Vifor from our share of the profit generated by KORSUVA injection sales and for commercial supply of KORSUVA injection to CSL Vifor, and a cash outflow of $1.8 million relating to operating lease liabilities associated with our lease agreements for our operating facility in Stamford, Connecticut, partially offset by cash inflows of $5.7 million from an increase in accounts payable and accrued expenses. Net non-cash charges primarily consisted of stock-based compensation expense of $17.7 million, and the amortization expense component of lease expense of $1.4 million relating to our Stamford operating leases.

### Net cash provided by investing activities

Net cash provided by investing activities was $48.7 million for the year ended December 31, 2024, which primarily included cash inflows of $82.0 million from maturities of available-for-sale marketable securities, partially offset by cash outflows of $32.2 million for the purchases of available-for-sale marketable securities and $1.0 million for the purchases of property and equipment.

Net cash provided by investing activities was $43.5 million for the year ended December 31, 2023, which primarily included cash inflows of $159.4 million from maturities and redemptions of available-for-sale marketable securities, partially offset by cash outflows of $113.6 million for the purchases of available-for-sale marketable securities and $2.4 million for the purchases of property and equipment.

Net cash provided by investing activities was $128.7 million for the year ended December 31, 2022, which primarily included cash inflows of $224.4 million from maturities and redemptions of available-for-sale marketable securities, partially offset by cash outflows of $95.7 million for the purchases of available-for-sale marketable securities.

### Net cash provided by financing activities

Net cash used in financing activities for the year ended December 31, 2024 consisted of payments made to HCR under the royalty purchase and sale agreement of approximately $3.6 million.

Net cash provided by financing activities for the year ended December 31, 2023 consisted of net proceeds of $36.5 million from the Original HCR Agreement, net proceeds of $1.1 million from the sales of common stock under our open market sales agreement, and proceeds of $0.6 million received from the exercise of stock options.

Net cash provided by financing activities for the year ended December 31, 2022 consisted of $0.3 million received from the exercise of stock options.

### Critical Accounting Estimates

The preparation of our consolidated financial statements and related disclosures in conformity with U.S. GAAP and our discussion and analysis of financial condition and results of operations require us to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances at the time such estimates are made. Actual results and outcomes may differ materially from our estimates, judgments, and assumptions. We periodically review our estimates in light of changes in circumstances, facts, and experience. The effects of material revisions in estimates are reflected in the financial statements prospectively from the date of the change in estimate. Note 2 of Notes to Consolidated Financial Statements, *Summary of Significant Accounting Policies*, in this Annual Report on Form 10-K describes the significant accounting policies and methods used in the preparation of our consolidated financial statements.

We define our critical accounting estimates as those subjective estimates and judgments about matters that are uncertain and are likely to have a material impact on our financial condition and results of operations as well as the specific manner in which we apply U.S. GAAP.

#### Liabilities Related to the Sales of Royalties/Milestones and Non-Cash Interest Expense

We recognized a liability related to the sales of future ex-U.S. royalties and milestones under our agreements with Maruishi and CSL Vifor under ASC 470-10: Debt and ASC 835-30: Interest – Imputation of Interest. The initial funds received by us in November 2023, the first milestone received by us in December 2023, and the second milestone earned by us for 2024 net sales in Japan, pursuant to the terms of the Original HCR Agreement, were recorded as a liability and will be accreted under the effective interest method up to the estimated amount of future royalties and milestone payments to be made under the Original HCR Agreement. The issuance costs were recorded as a direct deduction to the carrying amount of the liability and will be amortized under the effective interest method over the estimated period the liability will be repaid, solely using future royalty and milestone payments from CSL Vifor and Maruishi.

We estimated the total amount of future royalty revenue and milestone payments to be generated over the life of the Original HCR Agreement based on historical experience and estimates and projections of future activities from CSL Vifor and Maruishi. Since the liability involves judgment due to the estimation uncertainty in determining the future sales of the arrangement, we determined that the valuation of the liability related to the sales of future royalties, net, to be a critical accounting estimate. The future royalties and milestone payments used in the valuation of the liability are subject to estimation and uncertainty as we are dependent on CSL Vifor and Maruishi for timely and accurate information regarding future projections. A significant increase or decrease in these estimates could materially impact the liability balance and the related non-cash interest expense. If the timing of the receipt of royalty payments or milestones is materially different from the original estimates, we will prospectively adjust the effective interest and the related amortization of the liability and related issuance costs. Since the inception of this liability in 2023, our estimates were not materially different from actual amounts and timing of royalty revenue and milestone payments.

### Accounting Pronouncements Recently Adopted; Recent Accounting Pronouncements Not Yet Adopted

We do not expect that any recently issued accounting pronouncements will have a material effect on our financial statements. Refer to Note 2 of Notes to Consolidated Financial Statements*, Summary of Significant Accounting Policies*, in this Annual Report on Form 10-K, for a full description of accounting pronouncements recently adopted, and issued but not yet adopted, if applicable.

## Market risk

As filed, 4,864 characters.

#### Interest Rate Risk

Historically, we have invested substantially all of our cash reserves in a variety of available-for-sale marketable securities, including investment-grade debt instruments, principally corporate bonds, commercial paper, municipal bonds and direct obligations of the U.S. government and U.S. government-sponsored entities, and in cash equivalents. See Note 3 of Notes to Consolidated Financial Statements, *Available-for-Sale Marketable Securities*, in this Annual Report on Form 10-K for details about our available-for-sale marketable securities.

As of December 31, 2024, we had no available-for-sale marketable securities. As of December 31, 2023, we had invested $49.0 million of our cash reserves in such marketable securities. Those marketable securities included $49.0 million of investment grade debt instruments with a yield of approximately 4.41% and maturities through November 2024.

Historically, we have maintained an investment portfolio in accordance with our investment policy, which includes guidelines on acceptable investment securities, minimum credit quality, maturity parameters, and concentration and diversification. The primary objectives of our investment policy are to preserve principal, maintain proper liquidity and to meet operating needs. Our investments are subject to interest rate risk and will decrease in value if market interest rates increase. However, due to the conservative nature of our investments, including having no available-for-sale marketable securities as of December 31, 2024, and relatively short duration when we have maintained those investments, we do not believe we are materially exposed to changes in interest rates related to our investments. As a result, we do not currently use interest rate derivative instruments to manage exposure to interest rate changes.

Duration is a sensitivity measure that can be used to approximate the change in the fair value of a security that will result from a change in interest rates. Applying the duration model, a hypothetical 100 basis point, or 1%, increase in interest rates as of December 31, 2023, would have resulted in an immaterial decrease in the fair values of our portfolio of marketable securities. There were no available-for-sale marketable securities as of December 31, 2024.

#### Credit Quality Risk

Although our investments are subject to credit risk, our investment policy specifies credit quality standards for our investments and limits the amount of credit exposure from any single issue, issuer or type of investment. Nonetheless, deterioration of the credit quality of an investment security subsequent to purchase may subject us to the risk of not being able to recover the full principal value of the security. As of December 31, 2024, we did not have any available-for-sale marketable securities. As of December 31, 2023, the aggregate unrealized losses on our available-for-sale marketable securities were $0.3 million. For the years end December 31, 2024, 2023 and 2022, we did not record any charges to credit loss expense for our available-for-sale securities. Refer to Notes 2 of Notes to Consolidated Financial Statements, *Summary of Significant Accounting Policies – Concentration of Credit Risk* and *Marketable Securities,* and Note 3 of Notes to Consolidated Financial Statements, *Available-for-Sale Marketable Securities,* in this Annual Report on Form 10-K for further discussion and applicable tabular presentations.

As of December 31, 2024 and 2023, we had accounts receivable, net – related party from CSL Vifor of $0.4 million and $2.8 million, respectively, which primarily related to royalty payments earned from CSL Vifor for the 2024 period, and profit-sharing revenue from sales of KORSUVA injection in the United States by CSL Vifor, our commercial supply of KORSUVA injection to CSL Vifor, and royalty payments earned from CSL Vifor in the 2023 period. We also had a receivable for $1.0 million and $0.4 million for Japan royalties/milestones owed to us from Maruishi which was included within other receivables as of December 31, 2024 and 2023, respectively. We also had a receivable for $2.5 million for the second milestone financing we earned from HCR based on 2024 net sales in Japan which was also included within other receivables as of December 31, 2024. We believe that credit risks associated with CSL Vifor, Maruishi and HCR are not significant. We review the need for an allowance for credit losses for any receivable based on various factors including payment history and historical bad debt experience. We had an insignificant allowance for credit losses as of December 31, 2024 and 2023. Refer to Note 2 of Notes to Consolidated Financial Statements, *Summary of Significant Accounting Policies – Concentration of Credit Risk* and *Accounts Receivable, Net – Related Party.*

## Controls and procedures

As filed, 3,325 characters.

#### Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of December 31, 2024. Based on such evaluation, our Chief Executive Officer (principal executive officer) and Chief Financial Officer (principal financial officer) have concluded that, as of December 31, 2024, our disclosure controls and procedures were effective to provide reasonable assurance that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is (1) recorded, processed, summarized, and reported within the time periods specified in the rules and forms of the SEC, and (2) accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosures.

#### Management’s Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act. Our internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Our management utilized the criteria established in the Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) to conduct an assessment of the effectiveness of our internal control over financial reporting as of December 31, 2024. Based on the assessment, management has concluded that, as of December 31, 2024, our internal control over financial reporting was effective.

#### Changes in Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting that occurred during the quarter ended December 31, 2024 that have materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

#### Limitations on Controls and Procedures

Management, including our Chief Executive Officer and Chief Financial Officer, recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost benefit relationship of possible controls and procedures. Because of the inherent limitations in all control systems, no evaluation of controls and procedures can provide absolute assurance that all control issues and instances of fraud, if any, within Cara have been detected.

Filed Mar 11, 2025.
Source: SEC EDGAR, the filing index for accession 0001558370-25-002705. Last ingested by Listed: Oct 24, 2026, 15:11 ET. No prices; not investment advice.