OLIN Corp: Form 10-Q for the period ended Mar 31, 2026

BUSINESS BACKGROUND

Olin Corporation (Olin, the Company, we or our) is a Virginia corporation, incorporated in 1892, having its principal executive offices in Clayton, MO. We are a leading vertically integrated global manufacturer and distributor of chemical products and a leading U.S. manufacturer of ammunition. Our operations are concentrated in three business segments: Chlor Alkali Products and Vinyls, Epoxy and Winchester. All of our business segments are capital-intensive manufacturing businesses. The Chlor Alkali Products and Vinyls segment manufactures and sells chlorine and caustic soda, ethylene dichloride (EDC) and vinyl chloride monomer (VCM), methyl chloride , methylene chloride, chloroform, carbon tetrachloride, perchloroethylene, hydrochloric acid, hydrogen, bleach products and potassium hydroxide. The Epoxy segment produces and sells a full range of epoxy materials and precursors, including aromatics (acetone and phenol), allyl chloride, epichlorohydrin, liquid epoxy resins, solid epoxy resins and formulated solutions products such as converted epoxy resins and additives. The Winchester segment produces and sells sporting ammunition, reloading components, small caliber military ammunition and components, industrial cartridges and clay targets, along with contracted U.S. military project revenue.

EXECUTIVE SUMMARY

Overview

Net (loss) income for the three months ended March 31, 2026 and 2025 was $(83.0) million and $1.4 million, respectively. The decrease in net (loss) income for the three months ended March 31, 2026 was primarily due to lower operating results across our Chlor Alkali Products and Vinyls and Winchester business segments, partially offset by improved operating results from our Epoxy segment. Diluted net (loss) income per share was $(0.73) for the three months ended March 31, 2026, compared to $0.01 in the prior year period, a decrease of $0.74 per share.

Chlor Alkali Products and Vinyls reported segment loss of $(44.5) million for the three months ended March 31, 2026 compared to segment income of $78.3 million for the three months ended March 31, 2025. The decrease in segment results from the comparable prior year period was primarily due to lower pricing and volumes, higher raw material costs, primarily natural gas and electrical power costs, partially offset by lower operating costs. The first quarter 2026 segment loss also included a $36.1 million charge associated with legacy litigation matters.

Epoxy reported a segment loss of $(2.9) million and $(28.4) million for the three months ended March 31, 2026 and 2025, respectively. Epoxy segment results were higher than the comparable prior year period primarily due to lower operating and raw material costs and higher volumes, partially offset by lower pricing. Global epoxy demand remains weak, and our U.S. and European Epoxy businesses remain significantly challenged by subsidized Asian competition.

Winchester reported segment income of $15.2 million and $22.8 million for the three months ended March 31, 2026 and 2025, respectively. Winchester segment results were lower than the comparable prior year period primarily due to higher raw material and operating costs, including commodity metal and propellant costs, partially offset by higher commercial ammunition pricing and volumes and improved military project revenue.

Liquidity

On February 19, 2026, we executed an amendment to our existing $1,850.0 million senior credit facility (Senior Secured Credit Facility) which, among other things, modified the financial covenants to be less restrictive and incorporated guarantees and collateral by certain of our domestic subsidiaries. The maturity date for the Senior Secured Credit Facility remained March 14, 2030.

During the three months ended March 31, 2026, we had net borrowings of $170.3 million, with $160.0 million borrowed under our Senior Secured Revolving Credit Facility (defined below), which was partially used to satisfy the $109.7 million remaining principal amortization payments under the Secured Term Loan Facility (defined below).

International Trade

Tariffs and trade flows continue to influence the demand outlook amid varying market responses. Following the February 20, 2026, U.S. Supreme Court ruling that struck down broad emergency‑based tariffs issued under the International Emergency Economic Powers Act (IEEPA), the U.S. administration has begun recalibrating its tariff strategy through other legal alternatives, including expanded use of Section 301 investigations. Following the recent U.S. Supreme Court ruling, certain importers have begun pursuing tariff‑recovery claims related to previously assessed duties. While we continue to monitor these developments, the financial impact of tariff‑recovery opportunities or obligations has not been significant to our businesses. We also continue to monitor the direct and indirect impact from tariffs on goods being imported into the United States and the competitiveness of our export products in markets that implement retaliatory tariffs.

Additionally, although Winchester procures the majority of metals domestically, we have realized price inflation that we believe is partially tariff‑driven for the domestic supply of copper, steel, and tungsten products. Winchester has also experienced secondary effects from suppliers consuming tariff‑impacted metals in their end products. Winchester continuously monitors market trends and works to mitigate those and other cost increases through economies of scale in procurement and efficient sourcing practices.

Middle East Conflict

The recent escalation of conflict in the Middle East, including escalating tensions with Iran, and the international response to these developments, has increased the level of economic and political uncertainty across global markets. The conflict has contributed to heightened volatility in global supply and demand fundamentals, particularly within energy‑linked and regionally sensitive markets. Sanctions and policy actions from the U.S. and other governments continue to evolve, and the broader implications of the conflict on global economic conditions remain fluid. We continue to closely monitor the changing environment. As of now, the direct impact on our operations has not been significant; however, we are unable to determine the future impact that the conflict and the corresponding global response may have on our business.

Other Items

On September 18, 2025, we announced a mutual decision with Mitsui & Co., Ltd. (Mitsui) to end our joint venture, Blue Water Alliance (BWA), by the end of 2025. This decision was made to evolve our EDC participation by emphasizing longer-term structural opportunities that enhance value and optionality. In connection with the continued cessation of the joint venture, during the first quarter 2026, we paid a cash distribution of $31.3 million to Mitsui for the liquidation of BWA working capital.

CONSOLIDATED RESULTS OF OPERATIONS

($ in millions, except per share data)

Three Months Ended March 31, 2026 Compared to Three Months Ended March 31, 2025

Sales for the three months ended March 31, 2026 were $1,583.0 million compared to $1,644.2 million in the same period last year, a decrease of $61.2 million, or 4%. Chlor Alkali Products and Vinyls sales decreased by $167.6 million primarily due to lower sales volumes and pricing. Epoxy sales increased by $23.9 million, primarily due to higher volumes, partially offset by lower pricing. Winchester sales increased by $82.5 million, primarily due to increased military project revenue, and higher ammunition sales to military and commercial customers.

Gross margin decreased $72.9 million for the three months ended March 31, 2026 compared to the prior year period. Chlor Alkali Products and Vinyls gross margin decreased $92.7 million, primarily due to lower product pricing and volumes. Winchester gross margin decreased $5.4 million, primarily due to higher raw material and operating costs, including commodity metal and propellant costs, partially offset by higher product pricing. Epoxy gross margin increased $25.9 million, primarily due to lower operating and raw material costs and higher volumes, partially offset by lower pricing. Gross margin as a percentage of sales decreased to 5% during the three months ended March 31, 2026 from 9% during the three months ended March 31, 2025.

Selling and administrative expenses for the three months ended March 31, 2026 were $145.0 million, an increase of $44.0 million from the prior year period. The increase was primarily due to higher legal and legal-related settlement expenses of $37.2 million, which includes a $36.1 million charge associated with legacy litigation matters and higher stock-based compensation costs of $10.0 million, which includes mark-to-market adjustments. Selling and administrative expenses as a percentage of sales was 9% and 6% for the three months ended March 31, 2026 and 2025, respectively.

Restructuring charges for the three months ended March 31, 2026 and 2025 were $9.1 million and $4.0 million, respectively. Restructuring charges include facility exit costs, lease and other contract termination costs, employee severance and related benefits costs, and the write off of equipment and facilities.

Losses of non-consolidated affiliates relate to Olin’s equity share of the Hidrogenii, LLC joint venture.

Interest expense for the three months ended March 31, 2026 and 2025 included $0.2 million and $3.3 million for the write-off of unamortized deferred debt issuance costs associated financing transactions. Without these items, interest expense decreased $2.2 million from March 31, 2025 primarily due to a lower level of debt outstanding and lower average interest rates.

Non-operating pension income includes all components of pension and other postretirement net periodic benefit (income) cost, other than service costs. Non-operating pension income was lower for the three months ended March 31, 2026 compared to the prior year period primarily due to higher actuarial losses recognized to income.

The Company’s effective tax rate fluctuates from period to period based on several factors, including the geographic mix of earnings, the level of income or loss relative to available tax attributes, the recognition of valuation allowances in certain jurisdictions, and discrete tax items. For the three months ended March 31, 2026, the Company recorded a loss before income taxes of $(118.3) million and an associated income tax benefit of $35.3 million, resulting in an effective tax rate of 29.8%. The income tax benefit for the three months ended March 31, 2026 was primarily attributable to the loss before income taxes for the period, as well as Inflation Reduction Act credits recognized during the period. For the three months ended March 31, 2025, the Company recorded income before income taxes of $2.1 million and an associated income tax provision of $0.9 million, resulting in an effective tax rate of 42.9%. The income tax provision for the three months ended March 31, 2025 was primarily attributable to income before taxes for the period, along with a change in tax contingencies recognized during the period.

SEGMENT RESULTS

We define segment results as income (loss) before interest expense, interest income, other operating income (expense), non-operating pension income, other income and income taxes, and includes the results of non-consolidated affiliates in segment results consistent with management’s monitoring of the operating segments. We have three operating segments: Chlor Alkali Products and Vinyls, Epoxy and Winchester. The three operating segments reflect the organization used by our management for purposes of allocating resources and assessing performance and represents our reportable segments. Chlorine and caustic soda used in our Epoxy segment is transferred at cost from the Chlor Alkali Products and Vinyls segment.

($ in millions)

Chlor Alkali Products and Vinyls

Three Months Ended March 31, 2026 Compared to Three Months Ended March 31, 2025

Chlor Alkali Products and Vinyls sales for the three months ended March 31, 2026 were $756.9 million compared to $924.5 million for the same period in 2025, a decrease of $167.6 million, or 18%. The sales decrease was due to lower sales volumes, primarily as a result of lower trading volumes associated with Blue Water Alliance, and lower pricing.

Chlor Alkali Products and Vinyls segment loss was $(44.5) million for the three months ended March 31, 2026 compared to segment income of $78.3 million for the same period in 2025, a decrease of $122.8 million. The decrease in segment results was due to lower pricing ($63.5 million), lower volumes ($44.0 million), higher raw material costs ($29.6 million), primarily natural gas and electrical power costs, and a charge associated with legacy litigation matters ($36.1 million).

These decreases were partially offset by lower operating costs ($43.5 million), which included higher planned maintenance turnaround expenses, and lower costs associated with product purchases from other parties ($6.9 million). Chlor Alkali Products and Vinyls segment results included depreciation and amortization expense of $93.2 million and $107.2 million for the three months ended March 31, 2026 and 2025, respectively.

Epoxy

Three Months Ended March 31, 2026 Compared to Three Months Ended March 31, 2025

Epoxy sales for the three months ended March 31, 2026 were $355.6 million compared to $331.7 million for the same period in 2025, an increase of $23.9 million, or 7%. The sales increase was due to higher volumes ($32.9 million) and a favorable effect of foreign currency translation ($15.5 million), partially offset by lower product pricing ($24.5 million).

Epoxy segment loss was $(2.9) million for the three months ended March 31, 2026 compared to segment loss of $(28.4) million for the same period in 2025. The increase in segment results of $25.5 million was due to lower operating costs ($24.7 million) and higher volumes ($5.6 million). Lower product pricing ($24.5 million) was partially offset by lower raw material costs ($19.7 million), primarily benzene and propylene. A significant percentage of our Euro denominated sales are from products manufactured within Europe. As a result, the impact of foreign currency translation on revenue is primarily offset by the impact of foreign currency translation on raw materials and manufacturing costs also denominated in Euros. Epoxy segment results included depreciation and amortization expense of $11.9 million and $12.8 million for the three months ended March 31, 2026 and 2025, respectively.

Winchester

Three Months Ended March 31, 2026 Compared to Three Months Ended March 31, 2025

Winchester sales were $470.5 million for the three months ended March 31, 2026 compared to $388.0 million for the same period in 2025, an increase of $82.5 million, or 21%. The sales increase was due to higher sales to military customers and military project revenue ($74.4 million) and higher sales to commercial customers ($12.9 million), partially offset by lower sales to law enforcement agencies ($4.8 million).

Winchester segment income was $15.2 million for the three months ended March 31, 2026 compared to $22.8 million for the same period in 2025, a decrease of $7.6 million. The decrease in segment results was primarily due to higher raw material and operating costs ($14.2 million), including commodity metal and propellant costs, partially offset by higher product pricing ($5.1 million) and higher sales volume and military project revenue ($1.5 million). Winchester segment income included depreciation and amortization expense of $8.9 million and $9.5 million for the three months ended March 31, 2026 and 2025, respectively.

Corporate/Other

Three Months Ended March 31, 2026 Compared to Three Months Ended March 31, 2025

For the three months ended March 31, 2026, charges to income for environmental investigatory and remedial activities were $5.2 million compared to $5.0 million for the three months ended March 31, 2025. These charges related primarily to expected future investigatory and remedial activities associated with past manufacturing operations and former waste disposal sites.

For the three months ended March 31, 2026, other corporate and unallocated costs were $33.2 million compared to $20.0 million for the three months ended March 31, 2025, an increase of $13.2 million. The increase was primarily due to higher stock-based compensation costs ($10.0 million), which includes mark-to-market adjustments, and an unfavorable foreign currency impact ($3.8 million).

Restructurings

Pretax restructuring charges related to our restructuring and optimization efforts include facility exit costs, lease and other contract termination costs, employee severance and related benefits costs and the write-off of equipment and facilities.

Pretax restructuring charges for the three months ended March 31, 2026 and 2025, were as follows:

($ in millions)

We have included additional information with respect to our restructuring charges within Item 1, within Note 4, “Restructuring Charges” of our notes to condensed financial statements.

OUTLOOK

We expect second quarter 2026 operating results from our Chemical businesses to be higher than the first quarter 2026, with seasonally stronger demand and improved pricing. We expect our Winchester business second quarter 2026 results to increase from first quarter 2026 with improved commercial and military demand. Overall, we expect Olin’s second quarter 2026 operating results to be higher than the first quarter 2026 levels.

Other corporate and unallocated costs in 2026 are expected to be higher than the $85.7 million in 2025.

During 2026, we anticipate environmental expenses in the $25 million to $35 million range, compared to $24.5 million in 2025.

We expect non-operating pension income in 2026 to be lower than the $20.6 million in 2025. Based on our plan assumptions and estimates, we do not expect to make any cash contributions to our domestic qualified defined benefit pension plan in 2026. We have several international qualified defined benefit pension plans for which we anticipate cash contributions of less than $5 million in 2026.

During the first half of 2026, we expect to pay approximately $195 million to Shintech associated with the litigation matter discussed in Note 22, “Commitments and Contingencies” of our notes to consolidated financial statements, and previously recorded accruals for a VCM pricing dispute with Shintech.

In 2026, we currently expect our capital spending to be approximately $200 million. We expect 2026 depreciation and amortization expense to be approximately $475 million.

We currently believe the 2026 effective tax rate will be in the 20% to 30% range. We expect to receive refunds from prior years related to the clean hydrogen production tax credit under Section 45V as part of the Inflation Reduction Act of 2022. Factoring in these refunds, we expect cash taxes to be in the range of a net refund of $20 million to a net payment of $20 million.

ENVIRONMENTAL MATTERS

Environmental provisions charged to income, which are included in costs of goods sold, were $5.2 million and $5.0 million for the three months ended March 31, 2026 and 2025, respectively.

The following table summarizes the environmental liability activity:

($ in millions)

Environmental investigatory and remediation activities spending was associated with former waste disposal sites and past manufacturing operations. Spending in 2026 for investigatory and remedial efforts, the timing of which is subject to regulatory approvals and other uncertainties, is estimated to be approximately $30 million. Cash outlays for remedial and investigatory activities associated with former waste disposal sites and past manufacturing operations were not charged to income, but instead, were charged to reserves established for such costs identified and expensed to income in prior periods. Associated costs of investigatory and remedial activities are provided for in accordance with generally accepted accounting principles governing probability and the ability to reasonably estimate future costs. Our ability to estimate future costs depends on whether our investigatory and remedial activities are in preliminary or advanced stages. With respect to unasserted claims, we accrue liabilities for costs that, in our experience, we expect to incur to protect our interests against those unasserted claims. Our accrued liabilities for unasserted claims amounted to $11.4 million at March 31, 2026. With respect to asserted claims, we accrue liabilities based on remedial investigation, feasibility study, remedial action and operation, maintenance and monitoring (OM&M) expenses that, in our experience, we expect to incur in connection with the asserted claims. Required site OM&M expenses are estimated and accrued in their entirety for required periods not exceeding 30 years, which reasonably approximates the typical duration of long-term site OM&M. Charges to income for investigatory and remedial efforts may be material to our operating results in 2026.

The condensed balance sheets included reserves for future environmental expenditures to investigate and remediate known sites as follows:

($ in millions)

These amounts do not take into account any discounting of future expenditures or any consideration of insurance recoveries or advances in technology. These liabilities are reassessed periodically to determine if environmental circumstances have changed and/or remediation efforts and our estimate of related costs have changed. As a result of these reassessments, future charges to income may be made for additional liabilities.

Environmental exposures are difficult to assess for numerous reasons, including the identification of new sites, developments at sites resulting from investigatory studies, advances in technology, changes in environmental laws and regulations and their application, changes in regulatory authorities, the scarcity of reliable data pertaining to identified sites, the difficulty in assessing the involvement and financial capability of other Potentially Responsible Parties (PRPs), our ability to obtain contributions from other parties and the lengthy time periods over which site remediation occurs. It is possible that some of these matters (the outcomes of which are subject to various uncertainties) may be resolved unfavorably to us, which could materially adversely affect our financial position, cash flows or results of operations.

LEGAL MATTERS AND CONTINGENCIES

Discussion of legal matters and contingencies can be referred to under Item 1, within Note 18, “Commitments and Contingencies” of our notes to condensed financial statements.

LIQUIDITY AND CAPITAL RESOURCES

Cash Flow Data

($ in millions)

30

Operating Activities

For the three months ended March 31, 2026, net cash used for operating activities decreased by $37.4 million compared with the three months ended March 31, 2025. The decrease was primarily due to a smaller use of cash for working capital compared to the prior year period, partially offset by lower operating results. For the three months ended March 31, 2026, working capital increased $56.8 million compared to an increase of $204.4 million for the three months ended March 31, 2025. Receivables increased $73.9 million, primarily due to the timing of sales during the first quarter 2026 compared to the fourth quarter 2025. Inventories increased by $44.3 million, which reflects normal seasonal growth, and accounts payable and accrued liabilities increased $62.7 million from December 31, 2025.

Investing Activities

Capital spending was $43.7 million for the three months ended March 31, 2026, compared to $61.4 million for the comparable period in 2025. For the full year 2026, we expect our capital spending to be in the $200 million range. Our capital spending forecast represents normal capital spending to maintain our current operating facilities. We expect 2026 depreciation and amortization expense to be in the $475 million range.

On April 18, 2025, Olin acquired AMMO, Inc.’s small caliber ammunition manufacturing assets for total consideration of $55.8 million. The acquisition was financed with cash on hand.

Financing Activities

During the three months ended March 31, 2026 and 2025, activity of our outstanding debt included:

($ in millions)

For the three months ended March 31, 2026, we paid debt issuance costs of $2.1 million associated with the Senior Secured Credit Facility. For the three months ended March 31, 2025, we paid debt issuance costs of $12.0 million associated with the 2033 Notes and the 2025 Senior Credit Facility (defined below).

For the three months ended March 31, 2025, 0.7 million shares of common stock were repurchased and retired at a total value of $20.2 million.

We issued 0.2 million and less than 0.1 million shares representing stock options exercised for the three months ended March 31, 2026 and 2025, respectively, with a total value of $2.1 million and $1.9 million, respectively.

The percentage of total debt to total capitalization increased to 63.3% as of March 31, 2026 from 60.2% as of December 31, 2025, primarily as a result of a higher level of debt outstanding.

In the first quarter of 2026 and 2025, we paid a quarterly dividend of $0.20 per share. Dividends paid for the three months ended March 31, 2026 and 2025, were $22.8 million and $23.0 million, respectively. On April 29, 2026, our Board of Directors declared a dividend of $0.20 per share on our common stock, payable on June 12, 2026, to shareholders of record on May 14, 2026.

The payment of cash dividends is subject to the discretion of our Board of Directors and will be determined in light of then-current conditions, including our earnings, our operations, our financial condition, our capital requirements and other factors deemed relevant by our Board of Directors. In the future, our Board of Directors may change our dividend policy, including the frequency or amount of any dividend, in light of then-existing conditions.

In connection with the continued cessation of our BWA joint venture, during the first quarter 2026, we paid a cash distribution of $31.3 million to Mitsui for the liquidation of BWA working capital.

Liquidity and Other Financing Arrangements

Our principal sources of liquidity are from cash and cash equivalents, cash flow from operations and borrowings under our Senior Secured Revolving Credit Facility and our 2024 Receivables Financing Agreement (as defined below). Additionally, we believe that we have access to the high-yield debt and equity markets.

On March 14, 2025, Olin entered into a $1,850.0 million senior credit facility (2025 Senior Credit Facility), which increased the borrowing limit of our then-existing $1,550.0 million senior credit facility (2022 Senior Credit Facility) by $300.0 million and extended the maturity date from October 11, 2027 to March 14, 2030. The 2025 Senior Credit Facility includes a term loan facility with aggregate commitments of $650.0 million (2025 Term Loan Facility), which replaced Olin’s then-existing $350.0 million term loan facility (2022 Term Loan Facility), and a revolving credit facility with aggregate commitments of $1,200.0 million (2025 Revolving Credit Facility), which replaced Olin’s then-existing $1,200.0 million revolving credit facility (2022 Revolving Credit Facility).

On February 19, 2026, we executed an amendment to the 2025 Senior Credit Facility (Senior Secured Credit Facility) which, among other things, modified the financial covenants to be less restrictive and incorporated guarantees and collateral by certain of our domestic subsidiaries. The Senior Secured Credit Facility maintained the 2025 Term Loan Facility, as amended (Secured Term Loan Facility, and collectively with the 2025 Term Loan Facility and the 2022 Term Loan Facility, the Term Loan Facilities), and the 2025 Revolving Credit Facility, as amended (Senior Secured Revolving Credit Facility, and collectively with the 2025 Revolving Credit Facility and 2022 Revolving Credit Facility, the Revolving Credit Facilities). The amendment required all remaining principal amortization payments under the Secured Term Loan Facility to be satisfied. Borrowings under the Senior Secured Revolving Credit Facility were used to satisfy the $109.7 million remaining principal amortization payments under the Secured Term Loan Facility. The maturity date for the Senior Secured Credit Facility remained March 14, 2030. At March 31, 2026, we had $160.0 million of borrowings and $0.4 million of letters of credit issued under our Senior Secured Revolving Credit Facility and $1,039.6 million of undrawn commitments.

The amendment requires that the obligations under the Senior Secured Credit Facility be guaranteed by certain of our domestic subsidiaries. The obligations under the Senior Secured Credit Facility are also secured by liens on substantially all of Olin’s and the subsidiary guarantors’ personal property (Collateral), other than certain principal properties and capital stock of subsidiaries, and subject to certain other exceptions. The amendment provides that substantially all guarantees under the Senior Secured Credit Facility and liens on Collateral be released automatically upon notice by Olin, or after September 30, 2027, upon which time all covenant reliefs expire.

Under the Senior Secured Credit Facility, we may select various floating rate borrowing options. The actual interest rate paid on borrowings under the Senior Secured Credit Facility is based on a pricing grid which is dependent upon the net leverage ratio as calculated under the terms of the applicable facility for the prior fiscal quarter. The Senior Secured Credit Facility includes various customary restrictive covenants, including restrictions related to the ratio of secured debt to earnings before interest expense, taxes, depreciation and amortization (net leverage ratio) and the ratio of earnings before interest expense, taxes, depreciation and amortization to interest expense (coverage ratio). The calculation of secured debt in our net leverage ratio excludes borrowings under the 2024 Receivables Financing Agreement (defined below), up to a maximum of $425.0 million.

On March 14, 2025, Olin issued $600.0 million aggregate principal amount of 6.625% senior notes due April 1, 2033 (2033 Notes), in a private offering exempt from the registration requirements of the Securities Act of 1933, as amended. Interest on the 2033 Notes began accruing from March 14, 2025 and is paid semi-annually beginning on October 1, 2025, and every six months thereafter.

Proceeds from the 2033 Notes, together with borrowings under the 2025 Senior Credit Facility, were used to redeem the $108.6 million 9.50% senior notes due 2025 (2025 Notes), redeem the $500.0 million 5.125% senior notes due 2027 (2027 Notes), refinance the then-existing 2022 Senior Credit Facility, comprised of $505.0 million of borrowings under the 2022

Revolving Credit Facility and $332.5 million of borrowings under the 2022 Term Loan Facility, and pay related fees and expenses.

No event of default has occurred under any of our outstanding debt agreements that would permit the acceleration of the debt if not cured, and we are in compliance with all covenants and restrictions under all our outstanding debt agreements. In the future, our ability to generate sufficient operating cash flows, among other factors, will determine the amounts available to be borrowed under these facilities. As a result of our restrictive covenant related to the net leverage ratio, the maximum additional borrowings available to us could be limited in the future. The limitation, if an amendment or waiver from our lenders is not obtained, could restrict our ability to borrow the maximum amounts available under the Senior Secured Revolving Credit Facility and the 2024 Receivables Financing Agreement (defined below). As of March 31, 2026, there were no covenants or other restrictions that limited our ability to borrow.

We maintain a $500.0 million receivables financing agreement (2024 Receivables Financing Agreement) that is scheduled to mature on November 19, 2027. Under the 2024 Receivables Financing Agreement, our eligible trade receivables are used for collateralized borrowings and continue to be serviced by us. In addition, the 2024 Receivables Financing Agreement incorporates the net leverage ratio covenant that is contained in the Senior Secured Credit Facility. As of March 31, 2026, we had $460.0 million drawn under the 2024 Receivables Financing Agreement, $625.7 million of our trade receivables were pledged as collateral and we had $40.0 million of additional borrowing capacity.

At March 31, 2026, we had total letters of credit of $160.5 million outstanding, of which $0.4 million were issued under our Senior Secured Revolving Credit Facility. The letters of credit were used to support certain long-term debt obligations, workers compensation insurance policies, plant closure and post-closure obligations, international payment obligations and international pension funding requirements.

Our current debt structure is used to fund our business operations. As of March 31, 2026, we had long-term borrowings, including the current installment, of $2,996.1 million, of which $1,231.1 million were at variable rates. Included within long-term borrowings on the condensed balance sheets were deferred debt issuance costs of $19.6 million as of March 31, 2026.

We believe, based on current and projected levels of cash flow from our operations, together with our cash and cash equivalents on hand and the availability to borrow under our Senior Secured Revolving Credit Facility and 2024 Receivables Financing Agreement, we have the ability to access sufficient liquidity to meet our short-term and long-term needs, to make required payments of interest on our debt, fund our operating needs, working capital and our capital expenditure requirements, and comply with the financial ratios and other covenants and restrictions in our debt agreements.

On December 11, 2024, our Board of Directors approved a share repurchase program with a $1.3 billion authorization (2024 Repurchase Authorization). The Board of Directors previously authorized share repurchases with a $2.0 billion authorization on July 28, 2022 (2022 Repurchase Authorization). The 2024 Repurchase Authorization and 2022 Repurchase Authorization will terminate upon the purchase of $1.3 billion and $2.0 billion of common stock, respectively.

As of March 31, 2026, a cumulative total of 27.4 million shares of common stock have been repurchased and retired at a total value of $1,351.1 million under the 2022 Repurchase Authorization program, and $1,948.9 million of common stock remained authorized to be repurchased under the 2022 Repurchase Authorization and 2024 Repurchase Authorization programs.

We have registered the sale of an undetermined number of securities with the SEC, so that, from time-to-time, we may issue, offer and sell debt securities, preferred stock, common stock and/or warrants to purchase any such securities pursuant to a registration statement.

Credit Ratings

We receive ratings from three independent credit rating agencies: Fitch Ratings (Fitch), Moody's Investor Service (Moody's) and Standard & Poor's (S&P). The following table summarizes our credit ratings as of March 31, 2026:

On February 20, 2026, Fitch downgraded Olin to BB+ (from BBB-) and revised its outlook from stable to negative. On February 25, 2026, Moody’s downgraded Olin to Ba2 (from Ba1) and affirmed its negative outlook. On February 18, 2026, S&P downgraded Olin to BB (from BB+) and affirmed its negative outlook.

Contractual Obligations

Purchasing commitments are utilized in our normal course of business for our projected needs. We have supply contracts with various third parties for certain raw materials including ethylene, electricity, propylene and benzene. These agreements are maintained through long-term cost-based contracts that provide us with a reliable supply of key raw materials. There have been no material changes in our contractual obligations and commitments as disclosed in our Annual Report on Form 10-K for the year ended December 31, 2025, other than those which occur in the ordinary course of business.

Critical Accounting Estimates

Refer to “Critical Accounting Estimates” contained in Part II, Item 7 of our Annual Report on Form 10-K for the year ended December 31, 2025 for a complete discussion of our critical accounting estimates. There have been no material changes to our critical accounting estimates since our Annual Report on Form 10-K for the year ended December 31, 2025.

New Accounting Pronouncements

Discussion of new accounting pronouncements can be referred to under Item 1, within Note 2, “Recent Accounting Pronouncements.”

We are exposed to market risk in the normal course of our business operations due to our purchases of certain commodities, our ongoing investing and financing activities and our operations that use foreign currencies. The risk of loss can be assessed from the perspective of adverse changes in fair values, cash flows and future earnings. We have established policies and procedures governing our management of market risks and the use of financial instruments to manage exposure to such risks.

Energy costs, including electricity and natural gas, and certain raw materials used in our production processes are subject to price volatility. Depending on market conditions, we may enter into futures contracts, forward contracts, commodity swaps and put and call option contracts in order to reduce the impact of commodity price fluctuations. As of March 31, 2026, we maintained open positions on commodity contracts with a notional value totaling $232.5 million ($218.6 million at December 31, 2025, and $153.4 million at March 31, 2025). Assuming a hypothetical 10% increase in commodity prices which are currently hedged, as of March 31, 2026, we would experience a $23.3 million ($21.9 million at December 31, 2025 and $15.3 million at March 31, 2025) increase in our cost of inventory purchased, which would be substantially offset by a corresponding increase in the value of related hedging instruments.

We transact business in various foreign currencies other than the USD which exposes us to movements in exchange rates which may impact revenue and expenses, assets and liabilities and cash flows. Our significant foreign currency exposure is denominated with European currencies, primarily the Euro, although exposures also exist in other currencies of Asia Pacific, Latin America, Middle East and Africa. For all derivative positions, we evaluated the effects of a 10% shift in exchange rates between those currencies and the USD, holding all other assumptions constant. Unfavorable currency movements of 10% would negatively affect the fair values of the derivatives held to hedge currency exposures by $13.1 million. These unfavorable changes would generally have been offset by favorable changes in the values of the underlying exposures.

We are exposed to changes in interest rates primarily as a result of our investing and financing activities. Our current debt structure is used to fund business operations, and commitments from banks under our Senior Secured Revolving Credit Facility and our 2024 Receivables Financing Agreement are additional sources of liquidity. As of March 31, 2026, December 31, 2025 and March 31, 2025, we had long-term borrowings, including current installments, of $2,996.1 million, $2,827.3 million and $3,035.8 million, respectively, of which $1,231.1 million, $1,060.8 million and $1,271.9 million at March 31, 2026, December 31, 2025 and March 31, 2025, respectively, were issued at variable rates. Included within long-term borrowings on the condensed balance sheets were deferred debt issuance costs.

Assuming no changes in the $1,231.1 million of variable-rate debt levels from March 31, 2026, we estimate that a hypothetical change of 100-basis points in the secured overnight financing rate (SOFR) would impact annual interest expense by $12.3 million.

If the actual changes in commodities, foreign currency, or interest pricing is substantially different than expected, the net impact of commodity risk, foreign currency risk, or interest rate risk on our cash flow may be materially different than that disclosed above.

We do not enter into any derivative financial instruments for speculative purposes.

Our Chief Executive Officer and our Chief Financial Officer evaluated the effectiveness of our disclosure controls and procedures as of March 31, 2026. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that, as of such date, our disclosure controls and procedures were effective to ensure that information Olin is required to disclose in the reports that it files or submits with the SEC under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and to ensure that information we are required to disclose in such reports is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

There have been no changes in our internal control over financial reporting that occurred during the quarter ended March 31, 2026, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

This quarterly report on Form 10-Q includes forward-looking statements. These statements relate to analyses and other information that are based on management’s beliefs, certain assumptions made by management, forecasts of future results, and current expectations, estimates and projections about the markets and economy in which we and our various segments operate. The statements contained in this quarterly report on Form 10-Q that are not statements of historical fact may include forward-looking statements that involve a number of risks and uncertainties.

We have used the words “anticipate,” “intend,” “may,” “expect,” “believe,” “should,” “plan,” “outlook,” “project,” “estimate,” “forecast,” “optimistic,” “target,” and variations of such words and similar expressions in this quarterly report to identify such forward-looking statements. These statements are not guarantees of future performance and involve certain risks, uncertainties and assumptions, which are difficult to predict and many of which are beyond our control. Therefore, actual outcomes and results may differ materially from those matters expressed or implied in such forward-looking statements. We undertake no obligation to update publicly any forward-looking statements, whether as a result of future events, new information or otherwise. The payment of cash dividends is subject to the discretion of our Board of Directors and will be determined in light of then-current conditions, including our earnings, our operations, our financial conditions, our capital requirements and other factors deemed relevant by our Board of Directors. In the future, our Board of Directors may change our dividend policy, including the frequency or amount of any dividend, in light of then-existing conditions.

The risks, uncertainties and assumptions involved in our forward-looking statements, many of which are discussed in more detail in our filings with the SEC, including without limitation the “Risk Factors” section of our Annual Report on Form 10-K for the year ended December 31, 2025, and our Quarterly Reports on Form 10-Q and other reports furnished or filed with the SEC, include, but are not limited to, the following:

Business, Industry and Operational Risks

• sensitivity to economic, business and market conditions in the United States and overseas, including economic instability or a downturn in the sectors served by us;
• declines in average selling prices for our products and the supply/demand balance for our products, including the impact of excess industry capacity or an imbalance in demand for our chlor alkali products;
• unsuccessful execution of our operating model, which prioritizes Electrochemical Unit (ECU) margins over sales volumes;
• failure to control costs and inflation impacts or failure to achieve targeted cost reductions;
• availability of and/or higher-than-expected costs of raw material, energy, transportation, and/or logistics;
• our reliance on a limited number of suppliers for specified feedstock and services and our reliance on third-party transportation;
• the occurrence of unexpected manufacturing interruptions and outages, including those occurring as a result of labor disruptions and production hazards;
• exposure to physical risks associated with climate-related events or increased severity and frequency of severe weather events;
• the failure or an interruption, including cyber-attacks, of our information technology systems;
• risks associated with our international sales and operations, including economic, political or regulatory changes;
• weak industry conditions affecting our ability to comply with the financial maintenance covenants in our debt agreements;
• our indebtedness and debt service obligations;
• failure to identify, attract, develop, retain and motivate qualified employees throughout the organization and ability to manage executive officer and other key senior management transitions;
• adverse conditions in the credit and capital markets, limiting or preventing our ability to borrow or raise capital;
• our inability to complete future acquisitions or joint venture transactions or successfully integrate them into our business;
• the effects of any declines in global equity markets on asset values and any declines in interest rates or other significant assumptions used to value the liabilities in, and funding of, our pension plans;
• our long-range plan assumptions not being realized causing a non-cash impairment charge of long-lived assets;

Legal, Environmental and Regulatory Risks

• changes in, or failure to comply with, legislation or government regulations or policies, including changes regarding our ability to manufacture or use certain products and changes within the international markets in which we operate;
• new regulations or public policy changes regarding the transportation of hazardous chemicals and the security of chemical manufacturing facilities;
• unexpected outcomes from legal or regulatory claims and proceedings;
• costs and other expenditures in excess of those projected for environmental investigation and remediation or other legal proceedings; and
• various risks associated with our Lake City U.S. Army Ammunition Plant contract and performance under other governmental contracts.

All of our forward-looking statements should be considered in light of these factors. In addition, other risks and uncertainties not presently known to us or that we consider immaterial could affect the accuracy of our forward-looking statements.

Information regarding risk factors applicable to us appears in Part I, Item 1A. Risk Factors of our Annual Report on Form 10-K for the year ended December 31, 2025. There have been no material changes to the risk factors previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2025.