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Traws Pharma, Inc.: Form 10-Q for the period ended Mar 31, 2026

Filed with the SEC on May 15, 2026 and accepted by EDGAR at May 15, 2026, 07:10 ET.

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Management's discussion and analysis

As filed, 44,095 characters, with its headings, lists and tables. Extracted from the main document; charts and exhibits are in the original on sec.gov.

The following Management’s Discussion and Analysis of Financial Condition and Results of Operations should be read in conjunction with interim unaudited condensed consolidated financial statements contained in Part I, Item 1 of this quarterly report on Form 10-Q (“Quarterly Report”), and the audited consolidated financial statements and notes thereto for the year ended December 31, 2025 and the related Management’s Discussion and Analysis of Financial Condition and Results of Operations, both of which are contained in our annual report on Form 10-K for the year ended December 31, 2025, filed with the SEC on April 15, 2026 (“Annual Report”). As used in this Quarterly Report, unless the context suggests otherwise, the “Company,” “we,” “us,” “our,” “Traws” or “Traws Pharma” refers to Traws Pharma, Inc. and its consolidated subsidiaries.

Cautionary Note Regarding Forward-Looking Statements

This Quarterly Report includes forward-looking statements. We may, in some cases, use terms such as “believes,” “estimates,” “anticipates,” “expects,” “plans,” “intends,” “may,” “could,” “might,” “will,” “should,” “approximately” or other words that convey uncertainty of future events or outcomes to identify these forward-looking statements. Forward-looking statements appear in a number of places throughout this Quarterly Report and include statements regarding our intentions, beliefs, projections, outlook, analyses or current expectations concerning, among other things, the implementation of our business model and strategic plans for our business, our ongoing and planned preclinical development and clinical trials, our interactions with the U.S. Food and Drug Administration (“FDA”) and similar foreign authorities, the timing of and our ability to make regulatory filings and obtain and maintain regulatory approvals for our product candidates, protection of our intellectual property portfolio, the degree of clinical utility of our products, particularly in specific patient populations, our ability to develop commercial and manufacturing functions, expectations regarding clinical trial data, potential accelerated pathways to FDA approval that may be available for our product candidates, our results of operations, cash needs, financial condition, liquidity, prospects, growth and strategies, the industry in which we operate and the trends that may affect the industry or us.

By their nature, forward-looking statements involve risks and uncertainties because they relate to events, competitive dynamics and industry change, and depend on the economic circumstances that may or may not occur in the future or may occur on longer or shorter timelines than anticipated. Although we believe that we have a reasonable basis for each forward-looking statement contained in this Quarterly Report, we caution you that forward-looking statements are not guarantees of future performance and that our actual results of operations, financial condition and liquidity, and the development of the industry in which we operate may differ materially from the forward-looking statements contained in this Quarterly Report.

Actual results could differ materially from our forward-looking statements due to a number of factors, including without limitation risks related to:

  • our need for additional financing for our future clinical trials and other operations, our ability to obtain sufficient funds on acceptable terms when needed, and our plans and future needs to scale back operations if adequate financing is not obtained;
  • our ability to continue as a going concern;
  • our ability to establish additional partnerships for the further development of, or to otherwise monetize, any of our legacy assets;
  • any future payouts under the contingent value right (“CVR”) issued to our holders of record as of the close of business on April 15, 2024;
  • our estimates regarding expenses, future revenues, capital requirements and needs for additional financing;
  • the success and timing of our preclinical studies and clinical trials, including without limitation site

initiation and patient enrollment, and regulatory approval of protocols for future clinical trials;

  • our ability to enter into, maintain and perform collaboration agreements with other biotechnology or pharmaceutical companies, for funding and commercialization of our clinical drug product candidates or preclinical compounds, and our ability to achieve certain milestones under those agreements;
  • the difficulties in obtaining and maintaining regulatory approval of our product candidates, and the labeling under any approval we may obtain;
  • our plans and ability to develop, manufacture and commercialize our product candidates;
  • our failure to recruit or retain key scientific or management personnel or to retain our executive officers;
  • the size and growth of the potential markets for our product candidates and our ability to serve those markets;
  • regulatory developments in the United States and foreign countries;
  • the rate and degree of market acceptance of any of our product candidates;
  • obtaining and maintaining intellectual property protection for our product candidates and our proprietary technology;
  • the successful development of our commercialization capabilities, including sales and marketing capabilities;
  • recently implemented, and the potential for additional, cuts in federal funding and related budget cuts;
  • recently enacted and future legislation and regulation regarding the healthcare system;
  • the success of competing therapies and products that are or may become available;
  • our ability to maintain the listing of our securities on a national securities exchange;
  • the potential for third party disputes and litigation;
  • the performance of third parties, including contract research organizations (“CROs”) and third-party manufacturers; and
  • the effects of market volatility, macroeconomic factors, uncertainty with respect to the federal budget and debt ceiling, including potential government shutdowns related thereto, and geopolitical instability on our business, our partners and our suppliers.

Any forward-looking statements that we make in this Quarterly Report speak only as of the date of such statement, and we undertake no obligation to update such statements to reflect events or circumstances after the date of this Quarterly Report or to reflect the occurrence of unanticipated events. Comparisons of results for current and any prior periods are not intended to express any future trends or indications of future performance, unless expressed as such, and should only be viewed as historical data.

You should also read carefully the factors described in the “Risk Factors” in this Quarterly Report and our most recent Annual Report, to better understand significant risks and uncertainties inherent in our business and underlying any forward-looking statements. As a result of these factors, actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements in this Quarterly Report and you should not place undue reliance on any forward-looking statements.

Overview

As of March 31, 2026, we had cash and cash equivalents of $3.1 million and an accumulated deficit of $647.1 million. We expect to incur significant expenses and operating losses for the foreseeable future as we continue the development of, and seek regulatory approval for, our product candidates, even if milestones under our license and collaboration agreements may be met. Based on current projections, we do not have sufficient cash and cash equivalents as of the date of this Quarterly Report to support our operations for at least the 12 months following the date that the condensed consolidated financial statements included herein are issued. Accordingly, substantial doubt exists with respect to our ability to continue as a going concern within one year after the date that such financial statements are issued.

We are exploring various sources of funding for development and applying for regulatory approval of our research compounds as well as for our ongoing operations. If we raise additional funds through strategic collaborations and alliances or licensing arrangements with third parties, which may include existing collaboration partners, we may have to relinquish valuable rights to our technologies or product candidates or grant licenses on terms that are not favorable to us. There can be no assurance, however, that we will be successful in obtaining such financing in sufficient amounts, on terms acceptable to us, or at all. In addition, there can be no assurance that we will obtain approvals necessary to market our product candidates or achieve profitability or sustainable, positive cash flow. If we are unable to successfully raise sufficient additional capital, through future financings or through strategic and collaborative arrangements, we will not have sufficient cash to fund our ongoing trials and operations.

Our Portfolio/ Product Candidates/ Compounds

We are a clinical-stage biopharmaceutical company aiming to address unmet medical needs in respiratory viral diseases and cancer. We have four clinical programs:

  • Tivoxavir marboxil, which we acquired as part of our 2024 merger with Trawsfynydd Therapeutics, Inc. (the “Merger”), is a small molecule cap-dependent endonuclease inhibitor. Cap-dependent endonuclease (“CEN”) is an enzyme that is important for influenza virus replication. Tivoxavir marboxil is intended to inhibit CEN and, thus, is intended to impede influenza virus replication including, the influenza A or B viral strains and bird flu viral strains. It is our intention to develop tivoxavir marboxil as an oral dose given only once for potential treatment and prophylaxis of bird flu and seasonal influenza.

The first-in-man clinical study of tivoxavir marboxil (designated AV5124 in a previous study) was performed from May to September of 2023 in Russia. The study sponsor was Pharmasyntez, JSC. We have the right to use the data resulting from the study outside of Russia and the Eurasian Economic Community countries. The trial was a single ascending dose study, and, as such, each study participant only received one dose of tivoxavir marboxil. The study consisted of four dose cohorts that received 20, 40, 80 or 120 mg tivoxavir marboxil delivered as 20 mg strength tablets, or placebo. The study enrolled 28 healthy males ages 18-45 years who received either the study drug or placebo. The primary study endpoint was measurement of the safety and tolerability of single drug doses in healthy volunteers. The secondary endpoint was the measurement of pharmacokinetic parameters of single drug doses in healthy volunteers on an empty stomach or after a meal. In the study, one subject who received a single 40 mg dose of the study drug, experienced two adverse events (“AEs”). This subject experienced hyperglycemia, which was deemed to be mild and believed probably related to tivoxavir marboxil, and erosive gastritis with complications in the form of severe iron deficiency anemia, which was considered to be a serious adverse event (“SAE”) believed unlikely to be related (doubtful per the protocol) to the study drug.

There were no other AEs in the trial, including at higher doses. The pharmacokinetic measurements indicated a small food effect for tivoxavir marboxil, with increased exposure when the drug was taken after a meal but otherwise showed increasing exposure with increasing dose.

We advanced the development of tivoxavir marboxil with a Traws Pharma sponsored Phase 1 randomized, blinded, and placebo-controlled study in Australia that was approved by the Human Research Ethics Committee (“HREC”). This study enrolled four cohorts of 8 participants each, with 6 participants randomized to receive study drug and 2 participants assigned to receive placebo in each cohort. Participants were required to be healthy males or females ages 18-64 years. Participants took either one dose of the study drug or one dose of placebo. Dose levels evaluated in this study included 80, 120, 240 and 480 mg in capsules, taken orally. The primary endpoint of the study was the determination of safety and tolerability; the secondary and other endpoints included the determination of the drug pharmacokinetic profile. Topline data showed good overall tolerability and a pharmacokinetic profile that appears to support the potential use of tivoxavir marboxil as a one-time treatment for influenza. Sixteen AEs were recorded, of which three were reported as possibly related to study drug during the study; all were mild headaches. Topline data from this study showed that a single dose of tivoxavir marboxil maintained plasma drug levels consistently above the EC90 and within the predicted therapeutic window for more than 23 days. On March 21, 2025, we submitted a request for a meeting with the FDA to align on a path forward, including to seek guidance regarding the potential for accelerated approval utilizing the “Animal Rule” for further development of tivoxavir marboxil in the treatment of H5N1 bird flu. The FDA “Animal Rule” allows approval of therapeutic interventions in cases where there is a risk of severe disease and a controlled human trial would be unethical or infeasible. Our meeting request was granted, and we submitted our briefing package to the FDA on April 24, 2025. On May 27, 2025, we received written responses from the FDA for a Type B pre-Investigational New Drug Application meeting (“pre-IND”). The FDA provided feedback on development paths for potential approval of tivoxavir marboxil for bird flu and seasonal flu, including on the potential use of the Animal Rule. On June 30, 2025, we announced our submission of briefing materials for a Type D meeting to enable further FDA dialog on a potential path to accelerated approval for bird flu, as a follow up to the pre-IND FDA interactions.

In addition, on June 30, 2025, we announced our proposed Phase 2 dose-ranging, non-inferiority study, which will evaluate the effects of tivoxavir marboxil in patients with seasonal influenza. A separate single arm will evaluate the effects of tivoxavir marboxil in patients infected with H5N1 bird flu. The proposed study has been submitted for HREC review and, once initiated, is expected to enroll subjects in Australia and selected countries in Southeast Asia with high rates of human bird flu infections. During a Type D meeting, the FDA affirmed its position that clinical trial data, rather than reliance on the Animal Rule, is the registrational path for bird flu therapeutics. We have determined to defer the initiation of this study at this time due to the low immediate likelihood of successfully recruiting a Phase 2 study incorporating bird flu-infected subjects. However, we believe that recent approval of our Phase 2 bird flu/seasonal flu phase 2 protocol by Australian and South Korean regulatory authorities will allow us to quickly initiate a clinical study in either the Southern or Northern Hemispheres, respectively, should the incidence rate of bird flu increase. In January 2026, we announced plans to progress an additional indication for TXM as a monthly oral tablet for prophylaxis of seasonal influenza, supported by Phase 1 exposure observations from an earlier capsule formulation and formulation work indicating that a compressed tablet may provide extended coverage; we also announced that a time slot was secured for a human influenza prophylaxis human challenge trial targeted for June 2026, contingent on completion of a planned bridging healthy volunteer study. Separately, FDA informed the Company that its US IND for tivoxavir marboxil was being placed on clinical hold due to concerns with the toxicology data package. The Company is actively engaging with the FDA to address the clinical hold and is working to develop and submit a comprehensive response, with the goal of resolving the hold and advancing the program in the US by the end of 2026.

  • Ratutrelvir (“TRX01”), which we acquired as part of the Merger, is an inhibitor of the main protease (also known as 3CL protease) of the SARS-CoV-2 virus, the causative agent in COVID-19. The main

protease is an essential component in the mechanism for SARS-CoV-2 replication. TRX01 is intended to inhibit this protease and reduce SARS-CoV-2 virus replication. In vitro laboratory tests that measured the impact of TRX01 on SARS-CoV-2 replication, demonstrated that TRX01 inhibited the replication of viral isolates of the original SARS-CoV-2 isolates, and viral variants in the delta and omicron types. An animal study using the widely adopted K18 transgenic mouse model, demonstrated non-inferiority between TRX01 and the combination of nirmatrelvir + ritonavir, in terms of time to death and lung virus burden in this highly lethal model with neurological manifestations. Based on preclinical pharmacokinetic studies in multiple animal species, we intend to develop TRX01 for use without co-administration of a human cytochrome P450 (“CYP”) inhibitor such as ritonavir.

TRX01 was studied in a Phase 1 clinical trial that included single and multiple ascending dose phases. Participants were required to be healthy males or females ages 18-64 years. The primary endpoint of the study was the measurement of safety and tolerability, and the secondary endpoint included the determination of the drug pharmacokinetic and pharmacodynamic profiles. The Phase 1 trial was conducted in Australia. It was sponsored by the Company and was approved by the Human Research Ethics Committee. The trial administered either the study drug or placebo to 40 participants in the single ascending dose phase, which included 5 cohorts with 8 participants in each cohort (6 received study drug and two received placebo). Subjects in the single ascending dose phase received one oral dose of the study drug or placebo, depending on their assigned group. The single ascending dose portion of the study assessed TRX01 at 15, 50, 150, 300 and 600 mg doses. Subjects in the multiple ascending dose phase received a daily single oral dose of 150 mg or 600 mg (6 active and 2 placebo) for 10 consecutive days. The study was completed in September 2024. There were few recorded adverse events reported up to the highest dose, and none were determined to be related to study drug. Topline data from the study showed no treatment related adverse events reported up to the highest dose. Topline data also showed that once-daily administration of TRX01 for 10 consecutive days maintained plasma drug levels within the predicted therapeutic window for 12 days.

TRX01 was studied in a Phase 1 clinical trial that included single and multiple ascending dose phases. Participants were required to be healthy males or females ages 18-64 years. The primary endpoint of the study was the measurement of safety and tolerability, and the secondary endpoint included the determination of the drug pharmacokinetic and pharmacodynamic profiles. The Phase 1 trial was conducted in Australia. It was sponsored by the Company and was approved by the Human Research Ethics Committee. The trial administered either the study drug or placebo to 40 participants in the single ascending dose phase, which included 5 cohorts with 8 participants in each cohort (6 received study drug and two received placebo). Subjects in the single ascending dose phase received one oral dose of the study drug or placebo, depending on their assigned group. The single ascending dose portion of the study assessed TRX01 at 15, 50, 150, 300 and 600 mg doses. Subjects in the multiple ascending dose phase received a daily single oral dose of 150 mg or 600 mg (6 active and 2 placebo in each cohort) for 10 consecutive days. The study was completed in September 2024. There were few recorded AEs reported up to the highest dose, and none were determined to be related to study drug. Topline data from the study showed no treatment related adverse events reported up to the highest dose. Topline data also showed that once-daily administration of TRX01 for 10 consecutive days maintained plasma drug levels within the predicted therapeutic window for 12 days. On June 30, 2025, we announced our proposed Phase 2 non-inferiority study, which will evaluate the effects of ratutrelvir in newly diagnosed COVID-19 patients, and on August 18, 2025, we announced receipt of approval from the HREC to proceed with the Phase 2 study. The study is intended to enroll patients on a 10-day treatment regimen for ratutrelvir compared to the approved 5-day regimen for PAXLOVID®. In addition to efficacy and safety endpoints, the proposed study will also evaluate the rates of disease rebound as well as the incidence of Long COVID-19. On October 14, 2025, we announced the dosing of the first subject in our Phase 2 study to evaluate ratutrelvir. We intend to initiate a separate single arm to evaluate the safety and efficacy of ratutrelvir in newly diagnosed COVID-19 patients who are ineligible for treatment with PAXLOVID®. On December 17, 2025, we reported positive interim Phase 2 data showing ratutrelvir had a favorable tolerability profile versus PAXLOVID® and no viral rebound events were observed in ratutrelvir-treated patients, while a rebound occurred in the

PAXLOVID® arm. Interim results also showed activity in PAXLOVID® -eligible patients. On January 13, 2026, we reported interim data in a larger sample of 50 patients, suggesting faster time to sustained symptom resolution for ratutrelvir versus PAXLOVID®, continued no rebounds with ratutrelvir, and consistent safety/benefit signals in PAXLOVID®-eligible patients. On January 26, 2026, we announced the completion of enrollment of our ongoing 90-patient, open-label Phase 2 study of ratutrelvir versus PAXLOVID® in patients with mild-to-moderate COVID-19, together with a single arm in PAXLOVID®-ineligible subjects.

  • Narazaciclib is our oral CDK4-plus inhibitor intended initially to treat breast, endometrial and other cancers. Narazaciclib is a multi-targeted kinase inhibitor targeting multiple CDK’s, AMP-activated protein kinase (“AMPK”), related protein kinase 5 (“ARK5”), and colony-stimulating factor 1 receptor (“CSF1R”) at low nM concentrations, as well as other tyrosine kinases believed to drive tumor cell proliferation, survival and metastasis. We initiated a multi-center Phase 1/2a trial evaluating narazaciclib in combination with letrozole as a second or third-line therapy for recurrent metastatic low-grade endometrioid endometrial cancer in the first calendar quarter of 2023. In this study, both narazaciclib and letrozole were administered orally in the Phase 1 dose escalation phase. The first patient in this trial was dosed in May 2023 and the initial cohort (160 mg) was completed and no DLTs were observed. The 200 mg cohort enrolled 6 evaluable subjects, but two patients experienced dose limiting toxicities. As a result, the dose of narazaciclib of 160mg once daily in combination with letrozole 2.5mg QD was declared to be the maximum tolerated dose and the recommended Phase 2 dose for women with low grade endometrioid endometrial cancer. This study is now closed to accrual. The database has been locked, and a clinical study report is final.

Another Phase 1 study of narazaciclib as a monotherapy has also been conducted in patients with relapsed and/or refractory advanced cancer. The objectives of this study were to assess the safety, tolerability, pharmacokinetics and pharmacodynamics of narazaciclib administered orally as escalating daily doses in patients with advanced cancer relapsed or refractory to at least 1 prior line of therapy. Narazaciclib was dosed on a continuous daily schedule in 28-day cycles. In this study, the highest dose tested was 280mg once daily given continuously. This study is now closed to accrual.

We do not intend to initiate further Company-sponsored development for narazaciclib and expect our activities to be limited primarily to (i) completing analysis and reporting from completed studies, (ii) maintaining intellectual property and other program-enabling documentation, and (iii) supporting business development efforts.

  • Rigosertib is our second asset in oncology. Rigosertib is currently being studied in investigator initiated trials for epidermolysis bullosa-associated squamous cell carcinoma. Both studies included the use of either IV or oral rigosertib, depending on the clinical need of the patient. This is due to GI obstruction arising as a result of the presence of esophageal strictures complicating oral administration or extreme skin fragility complicating IV administration. It is, therefore, important in these patients that the investigator has both dosing options for the appropriate dosing of their patients. The data presented here are preliminary and may be subject to change. Our objective for this program is to establish partnerships for the development of rigosertib in this indication.

Recent Developments

April 2026 Financing

In April 2026, we completed a financing transaction, for aggregate gross proceeds of up to $60.0 million (the "April 2026 Financing"). The April 2026 Financing consisted of (i) $10.0 million of upfront gross proceeds at closing from the sale of 5,982,919 shares of our common stock (including pre-funded warrants in lieu thereof), (ii) the issuance of milestone-based warrants with an aggregate exercise price of $10.0 million that becomes exercisable upon receipt of approval from the Medicines and Healthcare products Regulatory Agency ("MHRA") to conduct the human challenge trial in the UK, (iii) the issuance of additional milestone-based warrant with an aggregate exercise price of $10.0 million that becomes exercisable upon shareholder approval and the announcement of data from the human challenge trial and (iv) the issuance of common warrants, subject to shareholder approval, with a three-year term to purchase shares of our common stock, providing potential additional gross proceeds of $30.0 million if fully exercised. The milestone-based warrants and the common warrants each have an exercise price equal to the per share purchase price in the April 2026 Financing. The common warrants are subject to a forced exercise provision if the trading price of our common stock equals or exceeds 200% of the applicable exercise price for 30 consecutive trading days. The milestone-based warrants become exercisable only upon achievement of the applicable milestone conditions, and there can be no assurance that we will receive any additional proceeds from the exercise of the milestone-based warrants or the common warrants, or as to the timing thereof.

At close, we paid transaction costs including a cash success fee equal to 6% of the upfront gross proceeds, and we intend to use the net proceeds for working capital and general corporate purposes, including funding our clinical and regulatory activities.

Results of Operations

Comparison of the Three Months Ended March 31, 2026 and 2025

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, 2026 ​ ​ ​ ​ ​ ​ 2025 ​ ​ ​ ​ ​ ​ ​ ​ ​ Change ​ ​ ​
Revenue ​ $— ​ $57,000 ​ $(57,000) ​
Operating expenses: ​ ​ ​ ​ ​ ​ ​
Research and development ​ 4,912,000 ​ 2,506,000 ​ (2,406,000) ​
General and administrative ​ 2,034,000 ​ 2,754,000 ​ 720,000 ​
Total operating expenses ​ 6,946,000 ​ 5,260,000 ​ (1,686,000)
Loss from operations ​ (6,946,000) ​ (5,203,000) ​ (1,743,000)
Change in fair value of warrant liability ​ ​ (159,000) ​ ​ 26,513,000 ​ ​ (26,672,000) ​
Other income, net ​ (2,000) ​ 180,000 ​ (182,000)
Net (loss) income ​ $(7,107,000) ​ $21,490,000 ​ $(28,597,000) ​

Research and development expenses

The details of our research and development expenses are:

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, 2026 ​ ​ ​ ​ ​ ​ 2025 ​ ​ ​ ​ ​
Virology ​ ​ 4,000,000 ​ ​ 1,774,000 ​
Oncology ​ ​ 57,000 ​ ​ 251,000 ​
Personnel related ​ 389,000 ​ 465,000 ​
Stock based compensation ​ 466,000 ​ 16,000 ​
​ ​ $4,912,000 ​ $2,506,000 ​

Research and development expenses increased by $2.4 million, or 96%, to $4.9 million for the three months ended March 31, 2026 from $2.5 million for the three months ended March 31, 2025. This increase was primarily related to a $2.2 million increase in virology expenses due to our ongoing development activities for ratutrelvir, tivoxavir marboxil, and TRX01, including the completion of our Phase 2a clinical trial for ratutrelvir and the initiation of a bridging study for tivoxavir marboxil in March 2026 and a $0.5 million increase in stock based compensation expenses, partially offset by a $0.2 million decrease in oncology expenses as we continue to pursue strategic partnerships for our oncology assets and a $0.1 million decrease in personnel expenses.

General and administrative expenses

​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, 2026 ​ ​ ​ ​ ​ ​ 2025
Professional & consulting fees ​ $785,000 ​ $1,192,000
Stock based compensation ​ ​ 168,000 ​ ​ 145,000
Personnel related ​ 666,000 ​ 904,000
Public company costs ​ 225,000 ​ 320,000
Insurance & other ​ ​ 190,000 ​ ​ 193,000
​ ​ $2,034,000 ​ $2,754,000

General and administrative expenses decreased by $0.8 million, or (26)%, to $2.0 million for the three months ended March 31, 2026 from $2.8 million for the three months ended March 31, 2025.

Change in fair value of warrant liability

Change in fair value of warrant liability during the three months ended March 31, 2026 was $0.2 million. Change in fair value of warrant liability of $26.5 million during the three months ended March 31, 2025 represents the remeasurement of the warrant liability upon amendment of the pre-funded and Series A Warrants, whereas the previously liability-classified warrants were reclassified to permanent equity, the exercise of pre-funded warrants, and the remaining Series A Warrants as of March 31, 2025.

Liquidity and Capital Resources

As of March 31, 2026, we had cash and cash equivalents of $3.1 million, an accumulated deficit of $647.1 million, and a working capital deficit of $7.9 million. Since inception, we have experienced negative cash flows from our operations and expect to continue to incur significant expenses in connection with our ongoing activities.

In April 2026, we completed the April 2026 Financing. The April 2026 Financing consisted of (i) $10.0 million of upfront gross proceeds at closing from the sale of shares of our common stock (or pre-funded warrants in lieu thereof), (ii) a milestone-based warrant with an aggregate exercise price of $10.0 million that becomes exercisable upon receipt of approval from the Medicines and Healthcare products Regulatory Agency ("MHRA") to conduct the human challenge trial in the UK, (iii) a second milestone-based warrant with an aggregate exercise price of $10.0 million that becomes exercisable upon shareholder approval and the announcement of data from the human challenge trial and (iv) common warrants, subject to shareholder approval, with a three-year term to purchase shares of our common stock, providing potential additional gross proceeds of $30.0 million if fully exercised.

The milestone-based warrants become exercisable only upon achievement of the applicable milestone conditions, and there can be no assurance that we will receive any additional proceeds from the exercise of the milestone-based warrants or the common warrants, or as to the timing thereof. If we do not receive additional proceeds from the exercise of the warrants or obtain capital from other sources, we will need to raise additional capital to fund our operations and to satisfy our obligations as they become due.

Based on our current projections, as of the date of this Quarterly Report, we believe that our existing cash and cash equivalents, together with the net proceeds received at closing from the April 2026 Financing, will not be sufficient to fund our operating requirements for at least the 12 months following the date that the consolidated financial statements included herein are issued. Accordingly, substantial doubt exists with respect to our ability to continue as a going concern within one year after the date that such financial statements are issued.

We will require substantial additional financing to fund our ongoing clinical trials and operations, and to continue to execute our strategy. There can be no assurance that we will be successful in obtaining such funding in sufficient amounts, on terms acceptable to us, or at all. The failure to obtain sufficient capital on acceptable terms when needed would have a material adverse effect on our business, results of operations, and financial condition.

The accompanying financial statements have been prepared on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities in the normal course of business, and do not include any adjustments relating to recoverability and classification of recorded asset amounts or the amounts and classification of liabilities that might be necessary should we be unable to continue as a going concern.

Cash Flows

The following table summarizes the Company’s cash flows for the three months ended March 31, 2026 and 2025:

​ ​ ​ Net cash (used in) provided by: ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, 2026 ​ ​ ​ ​ ​ ​ ​ ​ 2025 ​ ​
Operating activities ​ $(2,576,000) ​ $(5,437,000)
Financing activities ​ 1,897,000 ​ 13,000
Effect of foreign currency translation ​ (8,000) ​ 23,000
Net decrease in cash and cash equivalents ​ $(687,000) ​ $(5,401,000)

Operating Activities

Net cash used in operating activities was $2.6 million for the three months ended March 31, 2026, which consisted of net loss of $7.1 million, non-cash charges, partially offset by $0.8 million primarily attributable to stock-based compensation, and a $4.1 million change in operating assets and liabilities. Significant changes in operating assets and liabilities included an increase in accounts payable due to timing of invoices and payments to our vendors, which was partially offset by net decreases in prepaid expenses and other assets.

Net cash used in operating activities was $5.4 million for the three months ended March 31, 2025, which consisted of non-cash charges of $26.4 million primarily attributable to the change in fair value of warrant liability of $26.5 million and stock-based compensation of $0.2 million, partially offset by net income of $21.5 million and a $0.6 million change in operating assets and liabilities. Significant changes in operating assets and liabilities included a net decrease in accounts payable and accrued expenses of $1.2 million due to timing of invoices and payments to our vendors, which was partially offset by net decreases in prepaid expenses and other assets and receivables of $0.7 million.

Financing Activities

Net cash provided by financing activities was $1.9 million for the three months ended March 31, 2026, and was attributable to the proceeds received from the sale of shares of our common stock under our ongoing At The Market equity offering, offered pursuant to that certain At The Market Offering Agreement, dated March 10, 2025, by and between the Company and Citizens JMP Securities, LLC (“Citizens”) (the “ATM Agreement”), pursuant to which the Company may offer and sell shares of its common stock, having aggregate sales price of up to $50,000,000 (subject to certain limitations set forth in the ATM Agreement, including the “baby shelf” limitation under General Instruction I.B.6. of Form S-3), from time to time, to or through Citizens, acting as sales agent and/or principal.

Material Cash Requirements

We have not achieved profitability since our inception and we expect to continue to incur net losses for the foreseeable future. We expect net cash expended in 2026 to be higher than 2025 due to clinical trials and increased headcount in our clinical and regulatory groups. We enter into contracts in the normal course of business with third-party contract organizations for clinical trials, preclinical studies, manufacturing and other services and products for operating purposes. These contracts generally provide for termination following a certain period after notice and therefore we believe that, currently, our non-cancelable obligations under these agreements are not material. Based on current projections, we believe that we do not have sufficient cash and cash equivalents to support our operations for more than one year following the date that these financial statements from our Quarterly Report on Form 10-Q are issued. These conditions raise substantial doubt about our ability to continue as a going concern through the one-year period after the date that the financial statements are issued.

We are exploring various sources of funding for continued development and any potential in-licensed compounds as well as our ongoing operations. We expect to incur significant expenses and operating losses for the foreseeable future as we continue the development and clinical trials of, and seek regulatory approval for, our product candidates, even if milestones under our license and collaboration agreements may be met. If we obtain regulatory approval for any of our product candidates, we expect to incur significant NDA preparation and commercialization expenses. We do not currently have a relationship with an organization for the sales, marketing and distribution of pharmaceutical products. In the future, we may rely on licensing and co-promotion agreements with strategic or collaborative partners for the commercialization of our products in the United States and other territories. If we choose to build a commercial infrastructure to support marketing in the United States for any of our product candidates that achieve regulatory approval, such commercial infrastructure could be expected to include a targeted, oncology sales force supported by sales management, internal sales support, an internal marketing group and distribution support. To develop the appropriate commercial infrastructure internally, we would have to invest financial and management resources, some of which would have to be deployed prior to having any certainty about marketing approval. Furthermore, we have and expect to continue to incur additional costs associated with operating as a public company.

For additional risks, please see “Risk Factors” in Part II of this Quarterly Report and previously disclosed in our Annual Report.

Pro Forma Impact of the April 2026 Financing

The following financial information has been developed by application of pro forma adjustments to the historical financial statements of the Company appearing elsewhere in this Quarterly Report. The unaudited pro forma information gives effect to the 2026 private placement.

The unaudited pro forma financial information is presented for informational purposes only and does not purport to represent what the results of operations or financial position of the Company would have been had the transactions described above actually occurred on the dates indicated, nor do they purport to project the financial condition of the Company for any future period or as of any future date. The unaudited pro forma financial information should be read in conjunction with the Company’s financial statements and notes thereto included elsewhere in this Quarterly Report.

Unaudited Pro Forma Balance Sheet

​ ​ ​ ​ Assets Current assets: ​ ​ ​ ​ ​ ​ ​ ​ As of March 31, 2026 As Reported ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Adjustments April 2026 Financing ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pro Forma As Adjusted ​ ​ ​ ​ ​ ​
Cash and cash equivalents ​ $3,133,000 ​ $9,400,000 ​ $12,533,000
Tax incentive and other receivables ​ 1,687,000 ​ — ​ 1,687,000
Prepaid expenses and other assets ​ 845,000 ​ — ​ 845,000
Total current assets ​ 5,665,000 ​ 9,400,000 ​ 15,065,000
Property and equipment, net ​ 6,000 ​ — ​ 6,000
Intangible assets, net ​ ​ 2,484,000 ​ ​ — ​ ​ 2,484,000
Other assets ​ 1,000 ​ — ​ 1,000
Total assets ​ $8,156,000 ​ $9,400,000 ​ $17,556,000
Liabilities and stockholders’ (deficit) equity ​ ​ ​ ​ ​ ​ ​ ​ ​
Current liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​
Accounts payable ​ $7,665,000 ​ $— ​ $7,665,000
Accrued expenses and other liabilities ​ 5,543,000 ​ — ​ 5,543,000
Total current liabilities ​ 13,208,000 ​ — ​ 13,208,000
Warrant liabilities ​ 259,000 ​ — ​ 259,000
Total liabilities ​ 13,467,000 ​ — ​ 13,467,000
​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Stockholders’ (deficit) equity: ​ ​ ​ ​ ​ ​ ​ ​ ​
Series C Preferred stock, $0.01 par value, 5,000,000 shares authorized, 7,440 shares issued and 6,737 shares outstanding at March 31, 2026 and December 31, 2025 ​ — ​ — ​ —
Common stock, $0.01 par value, 250,000,000 shares authorized, 10,162,587 and 16,145,506 shares issued and outstanding at March 31, 2026 as reported and pro forma, respectively ​ 101,000 ​ — ​ 101,000
Additional paid-in capital ​ 641,681,000 ​ 9,400,000 ​ 651,081,000
Accumulated deficit ​ (647,091,000) ​ — ​ (647,091,000)
Accumulated other comprehensive income ​ (2,000) ​ — ​ (2,000)
Total stockholders’ (deficit) equity ​ (5,311,000) ​ 9,400,000 ​ 4,089,000
Total liabilities and stockholders’ (deficit) equity ​ $8,156,000 ​ $9,400,000 ​ $17,556,000
​ ​ ​ ​ ​ ​ ​ ​ ​ ​

The unaudited pro forma balance sheet as of March 31, 2026 gives effect to an assumed $10.0 million gross equity financing completed after March 31, 2026. Offering costs are assumed to be $0.6 million (6% of gross proceeds) and are reflected as a reduction of additional paid-in capital in accordance with U.S. GAAP. No proceeds from warrant exercises are reflected.

Critical Accounting Policies and Estimates

This Management’s Discussion and Analysis of our Financial Condition and Results of Operations is based on our interim unaudited condensed consolidated financial statements, which have been prepared in accordance with GAAP. The preparation of our financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities in our consolidated financial statements. On an ongoing basis, we evaluate our estimates and judgments, including those related to accrued expenses, stock-based compensation, and the contingent value rights. We base our estimates on historical experience, known trends and events and various other factors that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. As of March 31, 2026, there have been no significant changes in our critical accounting policies and estimates as discussed in our Annual Report.

Controls and procedures

As filed, 3,099 characters, with its headings, lists and tables. Extracted from the main document; charts and exhibits are in the original on sec.gov.

Management’s Evaluation of our Disclosure Controls and Procedures

Our management, with the participation of our principal executive and principal financial officers, evaluated the effectiveness of our disclosure controls and procedures as of March 31, 2026. The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) promulgated under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), means controls and other procedures of a company that are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure. Based on the evaluation of our disclosure controls and procedures as of March 31, 2026, our principal executive and principal financial officers concluded that, as of such date, our disclosure controls and procedures were effective.

Inherent Limitations on Effectiveness of Controls

Our management does not expect that our disclosure controls and procedures or our internal control over financial reporting will 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. The design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Further, 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, if any, have been detected. The design of any system of controls is based in part on certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Projections of any evaluation of the effectiveness of controls to future periods are subject to risks. Over time, controls may become inadequate because of changes in conditions or deterioration in the degree of compliance with policies or procedures.

Changes in Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that occurred during the fiscal quarter ended March 31, 2026 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Risk factors

As filed, 677 characters, with its headings, lists and tables. Extracted from the main document; charts and exhibits are in the original on sec.gov.

In addition to the other information set forth in this Quarterly Report, you should carefully consider the risk factors discussed in Part I, “Item 1A. Risk Factors” in our Annual Report and in other reports filed with the SEC, which could materially affect our business, financial condition or future results. The risks described in our Annual Report are not the only risks we face. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition and/or operating results.

There have not been any material changes to the risk factors disclosed in the Annual Report.

Figures reported in this filing

Standardized line items from the XBRL in this filing, for the period ended 2026-03-31. Comparative periods it repeats are left out.

Figures reported in this filing
Line itemPeriodValueXBRL concept
Research and development3 months2026-01-01 to 2026-03-31$4.9mus-gaap:ResearchAndDevelopmentExpense
Operating income3 months2026-01-01 to 2026-03-31−$6.9mus-gaap:OperatingIncomeLoss
Net income3 months2026-01-01 to 2026-03-31−$7.1mus-gaap:NetIncomeLoss
Diluted EPS3 months2026-01-01 to 2026-03-31−$0.53us-gaap:EarningsPerShareDiluted
Basic EPS3 months2026-01-01 to 2026-03-31−$0.53us-gaap:EarningsPerShareBasic
Diluted shares (weighted)3 months2026-01-01 to 2026-03-3110,640,625 sharesus-gaap:WeightedAverageNumberOfDilutedSharesOutstanding
Operating cash flow3 months2026-01-01 to 2026-03-31−$2.6mus-gaap:NetCashProvidedByUsedInOperatingActivities
Current assetsAt period end2026-03-31$5.7mus-gaap:AssetsCurrent
Total assetsAt period end2026-03-31$8.2mus-gaap:Assets
Current liabilitiesAt period end2026-03-31$13.2mus-gaap:LiabilitiesCurrent
Total liabilitiesAt period end2026-03-31$13.5mus-gaap:Liabilities
Shareholders' equityAt period end2026-03-31−$5.3mus-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

Source: SEC EDGAR, the filing index for accession 0001104659-26-061779. Last ingested by Listed: Nov 5, 2026, 14:20 ET. Listed shows no prices and gives no investment advice.