Huntsman — Jul 30, 2026 release

EXHIBIT 99.1   Exhibit 99.1     FOR IMMEDIATE RELEASE Investor Relations: July 30, 2026 Ivan Marcuse The Woodlands, TX (281) 719-4637 NYSE: HUN     Huntsman Announces Second Quarter 2026 Earnings   Second Quarter Highlights   · Second quarter 2026 net loss attributable to Huntsman of $6 million compared to a net loss of $158 million in the prior year period; second quarter 2026 diluted loss per share of $0.03 compared to diluted loss per share of $0.92 in the prior year period.   · Second quarter 2026 adjusted net income attributable to Huntsman of nil compared to adjusted net loss of $34 million in the prior year period; second quarter 2026 adjusted diluted income per share of nil compared to adjusted diluted loss per share of $0.20 in the prior year period.   · Second quarter 2026 adjusted EBITDA of $120 million compared to $74 million in the prior year period.   · Second quarter 2026 net cash used in operating activities from continuing operations was $60 million. Free cash flow was a use of cash of $90 million for the second quarter 2026 compared to a source of cash of $55 million in the prior year period.   · On June 16, 2026, we announced that we signed an agreement to complete an all-stock merger of equals with Olin Corporation.       Three months ended   Six months ended       June 30,   June 30,   In millions, except per share amounts   2026   2025   2026   2025   Revenues   $ 1,663   $ 1,458   $ 3,083   $ 2,868                               Net loss attributable to Huntsman Corporation   $ (6 ) $ (158 ) $ (59 ) $ (163 ) Adjusted net income (loss) (1)   $ -   $ (34 ) $ (35 ) $ (53 )                             Diluted loss per share   $ (0.03 ) $ (0.92 ) $ (0.34 ) $ (0.94 ) Adjusted diluted income (loss) per share (1)   $ -   $ (0.20 ) $ (0.20 ) $ (0.31 )                             Adjusted EBITDA (1)   $ 120   $ 74   $ 193   $ 146                               Net cash (used in) provided by operating activities from continuing operations   $ (60 ) $ 92   $ (113 ) $ 21   Free cash flow (2)   $ (90 ) $ 55   $ (181 ) $ (52 )   See end of press release for footnote explanations and reconciliations of non-GAAP measures.                       THE WOODLANDS, Texas – Huntsman Corporation (NYSE: HUN) today reported second quarter 2026 results with revenues of $1,663 million, net loss attributable to Huntsman of $6 million, adjusted net income attributable to Huntsman of nil and adjusted EBITDA of $120 million.   Peter R. Huntsman, Chairman, President, and CEO, commented:   “We delivered a solid quarter, supported by higher volumes across all three segments and pricing actions that offset a significant increase in raw material costs. Improved industrial demand helped counter continued softness in construction. Rising and volatile energy and crude oil related costs, particularly in Europe, remain a headwind, and we will stay focused on additional price increases and cost-reduction initiatives to help offset these pressures.   Our planned merger of equals with Olin Corporation continues to progress at pace. The strong collaboration between our teams reinforces my confidence in our ability to deliver the synergy targets we have outlined. We also expect the combined company to benefit from vertical integration, greater scale, and a stronger financial profile, creating meaningful value for shareholders of both companies. The stockholder vote is scheduled for August 25, 2026, and we are excited about the future of OlinHuntsman.”   Segment Analysis for 2Q26 Compared to 2Q25   Polyurethanes   The increase in revenues in our Polyurethanes segment for the three months ended June 30, 2026 compared to the same period of 2025 was primarily due to higher average selling prices and higher sales volumes. MDI average selling prices increased across all three regions due to improved supply and demand dynamics. MDI sales volumes increased in the Americas and Europe regions. The increase in segment adjusted EBITDA was primarily due to higher average selling prices, higher sales volumes, higher equity earnings from our minority-owned joint venture in China and cost savings achieved from our cost optimization program, partially offset by higher raw materials costs.   Performance Products   The increase in revenues in our Performance Products segment for the three months ended June 30, 2026 compared to the same period of 2025 was primarily due to higher sales volumes and slightly higher average selling prices. Sales volumes increased primarily due to favorable demand in our performance amines business. Average selling prices increased primarily due to higher raw materials costs. The increase in segment adjusted EBITDA was primarily due to higher sales volumes and lower fixed costs achieved from our cost optimization program.   Advanced Materials   The increase in revenues in our Advanced Materials segment for the three months ended June 30, 2026 compared to the same period of 2025 was primarily due to higher average selling prices and higher sales volumes. Average selling prices increased primarily due to favorable sales mix and the positive impact of major foreign currency exchange rate movements against the U.S. dollar. Sales volumes increased primarily in our aerospace, power and automotive markets. The increase in segment adjusted EBITDA was primarily due to higher margins and higher sales volumes.   Liquidity and Capital Resources   During the three months ended June 30, 2026, our free cash flow used was $90 million as compared to a source of cash of $55 million in the same period of 2025. As of June 30, 2026, we had approximately $0.9 billion of combined cash and unused borrowing capacity.   - 2  -     During the three months ended June 30, 2026, we spent $30 million on capital expenditures as compared to $37 million in the same period of 2025. During 2026, we expect capital expenditures to be approximately $170 million.   Income Taxes   In the second quarter of 2026, our effective tax rate was 65% and our adjusted effective tax rate was 61%.   Earnings Conference Call Information   We will hold a conference call to discuss our second quarter 2026 financial results on Friday, July 31, 2026, at 10:00 a.m. ET.   Webcast link: https://event.choruscall.com/mediaframe/webcast.html?webcastid=r4UuXqgQ   Participant dial-in numbers: Domestic callers: (877) 402-8037 International callers: (201) 378-4913   The conference call will be accompanied by presentation slides that will be accessible via the webcast link and Huntsman’s investor relations website, www.huntsman.com/investors . Upon conclusion of the call, the webcast replay will be accessible via Huntsman’s website.   Upcoming Conferences  During the third quarter 2026, a member of management is expected to present at:  Seaport Summer Investor Conference, August 18, 2026  UBS Conference, September 9, 2026  Jefferies Industrials Conference, September 10, 2026  Alembic Conference, September 14, 2026  Deutsche Bank Leveraged Finance Conference, September 28, 2026   A webcast of the presentation, if applicable, along with accompanying materials will be available at www.huntsman.com/investors .   - 3  -     Table 1 – Results of Operations       Three months ended     Six months ended       June 30,     June 30,   In millions, except per share amounts   2026     2025     2026     2025   Revenues   $ 1,663     $ 1,458     $ 3,083     $ 2,868   Cost of goods sold     1,418       1,276       2,655       2,485   Gross profit     245       182       428       383   Operating expenses:                                 Selling, general and administrative     183       160       346       326   Research and development     28       33       57       65   Restructuring, impairment and plant closing costs     9       124       15       125   Gain on sale of business, net     (22 )     -       (22 )     -   Gain on acquisition of assets, net     -       -       -       (5 ) Income associated with litigation matter, net     -       -       -       (33 ) Other operating expense (income), net     10       (15 )     11       (17 ) Total operating expenses     208       302       407       461   Operating income (loss)     37       (120 )     21       (78 ) Interest expense, net     (23 )     (21 )     (44 )     (40 ) Equity in income (loss) of investment in unconsolidated affiliates     5       (2 )     10       (1 ) Other income, net     7       4       10       7   Income (loss) from continuing operations before income taxes     26       (139 )     (3 )     (112 ) Income tax expense     (17 )     (7 )     (28 )     (22 ) Income (loss) from continuing operations     9       (146 )     (31 )     (134 ) (Loss) income from discontinued operations, net of tax     (2 )     1       (3 )     -   Net income (loss)     7       (145 )     (34 )     (134 ) Net income attributable to noncontrolling interests     (13 )     (13 )     (25 )     (29 ) Net loss attributable to Huntsman Corporation   $ (6 )   $ (158 )   $ (59 )   $ (163 )                                   Adjusted EBITDA (1)   $ 120     $ 74     $ 193     $ 146   Adjusted net income (loss) (1)   $ -     $ (34 )   $ (35 )   $ (53 )                                   Basic loss per share   $ (0.03 )   $ (0.92 )   $ (0.34 )   $ (0.94 ) Diluted loss per share   $ (0.03 )   $ (0.92 )   $ (0.34 )   $ (0.94 ) Adjusted diluted income (loss) per share (1)   $ -     $ (0.20 )   $ (0.20 )   $ (0.31 )                                   Common share information:                                 Basic weighted average shares     173       173       173       172   Diluted weighted average shares     173       173       173       172   Diluted shares for adjusted diluted income (loss) per share     174       173       173       172     See end of press release for footnote explanations.                                   - 4  -       Table 2 -- Results of Operations by Segment       Three months ended           Six months ended             June 30,     Better /     June 30,     Better /   In millions   2026     2025     (worse)     2026     2025     (worse)   Segment revenues:                                                 Polyurethanes   $ 1,079     $ 932       16 %   $ 2,002     $ 1,844       9 % Performance Products     283       270       5 %     511       527       (3 %) Advanced Materials     313       264       19 %     592       513       15 % Total reportable segments' revenues     1,675       1,466       14 %     3,105       2,884       8 %                                                   Intersegment eliminations     (12 )     (8 )     N/M       (22 )     (16 )     N/M                                                     Total revenues   $ 1,663     $ 1,458       14 %   $ 3,083     $ 2,868       7 %                                                   Segment adjusted EBITDA (1) :                                                 Polyurethanes   $ 66     $ 31       113 %   $ 105     $ 73       44 % Performance Products     37       32       16 %     63       62       2 % Advanced Materials     64       45       42 %     109       81       35 %   N/M = not meaningful See end of press release for footnote explanations.   Table 3 -- Factors Impacting Sales Revenue       Three months ended       June 30, 2026 vs. 2025       Average selling price (a)                   Local     Exchange     Sales             currency & mix     rate     volume (b)     Total   Polyurethanes     10 %     2 %     4 %     16 %                                   Performance Products     1 %     1 %     3 %     5 %                                   Advanced Materials     8 %     3 %     8 %     19 %                                   Combined segments     8 %     2 %     4 %     14 %       Six months ended       June 30, 2026 vs. 2025       Average selling price (a)                   Local     Exchange     Sales             currency & mix     rate     volume (b)     Total   Polyurethanes     2 %     3 %     4 %     9 %                                   Performance Products     (2 %)     2 %     (3 %)     (3 %)                                   Advanced Materials     6 %     4 %     5 %     15 %                                   Combined segments     2 %     3 %     3 %     8 %   (a) Excludes sales from tolling arrangements, by-products and raw materials. (b) Excludes sales from by-products and raw materials.   - 5 -     Table 4 – Reconciliation of U.S. GAAP to Non-GAAP Measures                   Income tax     Net     Diluted income (loss)       EBITDA     and other expense     income (loss)     per share       Three months ended     Three months ended     Three months ended     Three months ended       June 30,     June 30,     June 30,     June 30,   In millions, except per share amounts   2026     2025     2026     2025     2026     2025     2026     2025   Net income (loss)   $ 7     $ (145 )                   $ 7     $ (145 )   $ 0.04     $ (0.84 ) Net income attributable to noncontrolling interests     (13 )     (13 )                     (13 )     (13 )     (0.07 )     (0.08 )                                                                   Net loss attributable to Huntsman Corporation     (6 )     (158 )                     (6 )     (158 )     (0.03 )     (0.92 ) Interest expense, net     23       21                                                   Income tax expense     17       7     $ (17 )   $ (7 )                                 Income tax expense from discontinued operations     -       1                                                   Depreciation and amortization     77       72                                                   EBITDA / Loss (income) from discontinued operations     2       (2 )      N/A        N/A       2       (1 )     0.01       (0.01 ) Release of significant deferred tax asset valuation allowances     -       -       -       (8 )     -       (8 )     -       (0.05 ) Gain on sale of business/assets, net     (22 )     -       -       -       (22 )     -       (0.13 )     -   Expenses associated with the proposed merger     5       -       -       -       5       -       0.03       -   Certain legal and other settlements and related expenses, net     7       1       -       -       7       1       0.04       0.01   Amortization of pension and postretirement actuarial losses     7       7       (1 )     -       6       7       0.03       0.04   Restructuring, impairment and plant closing and transition costs     10       125       (2 )     -       8       125       0.05       0.72   Adjusted (1)   $ 120     $ 74     $ (20 )   $ (15 )     -       (34 )   $ -     $ (0.20 )                                                                   Adjusted income tax expense (1)                                     20       15                   Net income attributable to noncontrolling interests                                     13       13                                                                                     Adjusted pre-tax income (loss) (1)                                   $ 33     $ (6 )                                                                                   Adjusted effective tax rate (3)                                     61 %     (250 %)                                                                                   Effective tax rate                                     65 %     (5 %)                                                                 Income tax     Net     Diluted (loss) income       EBITDA     and other expense     loss     per share       Six months ended     Six months ended     Six months ended     Six months ended       June 30,     June 30,     June 30,     June 30,   In millions, except per share amounts   2026     2025     2026     2025     2026     2025     2026     2025   Net loss   $ (34 )   $ (134 )                   $ (34 )   $ (134 )   $ (0.20 )   $ (0.78 ) Net income attributable to noncontrolling interests     (25 )     (29 )                     (25 )     (29 )     (0.14 )     (0.17 )                                                                   Net loss attributable to Huntsman Corporation     (59 )     (163 )                     (59 )     (163 )     (0.34 )     (0.94 ) Interest expense, net from continuing operations     44       40                                                   Income tax expense from continuing operations     28       22     $ (28 )   $ (22 )                                 Income tax expense from discontinued operations (3)     -       1                                                   Depreciation and amortization from continuing operations     150       141                                                   Business acquisition and integration gain and purchase accounting inventory adjustments     -       (5 )     -       -       -       (5 )     -       (0.03 ) EBITDA / Loss (income) from discontinued operations (3)     3       (1 )     N/A       N/A       3       -       0.02       -   Establishment of significant deferred tax asset valuation allowances, net     -       -       -       1       -       1       -       0.01   Gain on sale of business/assets, net     (22 )     -       -       -       (22 )     -       (0.13 )     -   Expenses associated with the proposed merger     5       -       -       -       5       -       0.03       -   Loss on early extinguishment of debt     1       -       -       -       1       -       0.01       -   Certain legal and other settlements and related expenses (income), net     11       (32 )     -       7       11       (25 )     0.06       (0.14 ) Amortization of pension and postretirement actuarial losses     14       14       (3 )     (2 )     11       12       0.06       0.07   Restructuring, impairment and plant closing and transition costs     18       129       (3 )     (2 )     15       127       0.09       0.74   Adjusted (1)   $ 193     $ 146     $ (34 )   $ (18 )     (35 )     (53 )   $ (0.20 )   $ (0.31 )                                                                   Adjusted income tax expense (1)                                     34       18                   Net income attributable to noncontrolling interests                                     25       29                                                                                     Adjusted pre-tax income (loss) (1)                                   $ 24     $ (6 )                                                                                   Adjusted effective tax rate (4)                                     142 %     (300 %)                                                                                   Effective tax rate                                     (933 %)     (20 %)                   N/M = not meaningful N/A = not applicable See end of press release for footnote explanations.   - 6 -     Table 5 – Balance Sheets       June 30,     December 31,   In millions   2026     2025   Cash   $ 346     $ 429   Accounts and notes receivable, net     880       677   Inventories     935       818   Prepaid expenses     79       94   Other current assets     38       46   Property, plant and equipment, net     2,408       2,486   Other noncurrent assets     2,504       2,465                     Total assets   $ 7,190     $ 7,015                     Accounts payable (5)   $ 886     $ 758   Other current liabilities (5)     469       478   Current portion of debt     364       353   Long-term debt     1,723       1,658   Other noncurrent liabilities     819       811   Huntsman Corporation stockholders’ equity     2,692       2,750   Noncontrolling interests in subsidiaries     237       207                     Total liabilities and equity   $ 7,190     $ 7,015     See end of press release for footnote explanations.   Table 6 – Outstanding Debt        June 30,     December 31,   In millions   2026     2025   Debt:                 Revolving credit facility   $ 359     $ 343   Senior notes     1,489       1,488   Amounts outstanding under A/R programs     217       152   Variable interest entities     2       7   Other debt     20       21                     Total debt - excluding affiliates     2,087       2,011                     Total cash     346       429                     Net debt - excluding affiliates (4)   $ 1,741     $ 1,582     See end of press release for footnote explanations.   - 7 -         Table 7 – Summarized Statements of Cash Flows       Three months ended     Six months ended       June 30,     June 30,   In millions   2026     2025     2026     2025   Total cash at beginning of period   $ 369     $ 334     $ 429     $ 340   Net cash (used in) provided by operating activities from continuing operations     (60 )     92       (113 )     21   Net cash used in operating activities from discontinued operations     -       (1 )     -       (4 ) Net cash provided by (used in) investing activities     22       (38 )     (15 )     (32 ) Net cash provided by financing activities     13       9       43       69   Effect of exchange rate changes on cash     2       3       2       5   Total cash at end of period   $ 346     $ 399     $ 346     $ 399                                     Free cash flow (2) :                                 Net cash (used in) provided by operating activities from continuing operations   $ (60 )   $ 92     $ (113 )   $ 21   Capital expenditures     (30 )     (37 )     (68 )     (73 ) Free cash flow from continuing operations (2)   $ (90 )   $ 55     $ (181 )   $ (52 )                                   Supplemental cash flow information:                                 Cash paid for interest   $ (38 )   $ (36 )   $ (43 )   $ (44 ) Cash paid for income taxes     (10 )     (49 )     (24 )     (61 ) Cash paid for restructuring and integration     (16 )     (8 )     (28 )     (11 ) Cash paid for pensions     (7 )     (8 )     (16 )     (16 ) Depreciation and amortization from continuing operations     77       72       150       141                                     Change in primary working capital:                                 Accounts and notes receivable   $ (112 )   $ 2     $ (223 )   $ (63 ) Inventories     (57 )     160       (132 )     59   Accounts payable (5)     49       (60 )     154       (87 ) Total change in primary working capital   $ (120 )   $ 102     $ (201 )   $ (91 )                                   See end of press release for footnote explanations.                                   - 8 -      Footnotes   (1) We use adjusted EBITDA to measure the operating performance of our business and for planning and evaluating the performance of our business segments. We provide adjusted net income (loss) because we feel it provides meaningful insight for the investment community into the performance of our business. We believe that net income (loss) is the performance measure calculated and presented in accordance with generally accepted accounting principles in the U.S. (“GAAP”) that is most directly comparable to adjusted EBITDA and adjusted net income (loss). Additional information with respect to our use of each of these financial measures follows:   Adjusted EBITDA, adjusted net income (loss) and adjusted diluted income (loss) per share, as used herein, are not necessarily comparable to other similarly titled measures of other companies.   Adjusted EBITDA is computed by eliminating the following from net income (loss): (a) net income attributable to noncontrolling interests; (b) interest expense, net; (c) income taxes; (d) depreciation and amortization; (e) amortization of pension and postretirement actuarial losses; (f) restructuring, impairment and plant closing and transition costs; and further adjusted for certain other items set forth in the reconciliation of net income (loss) to adjusted EBITDA in Table 4 above.   Adjusted net income (loss) and adjusted diluted income (loss) per share are computed by eliminating the after tax impact of the following items from net income (loss): (a) net income attributable to noncontrolling interests; (b) amortization of pension and postretirement actuarial losses; (c) restructuring, impairment and plant closing and transition costs; and further adjusted for certain other items set forth in the reconciliation of net income (loss) to adjusted net income (loss) in Table 4 above. The income tax impacts, if any, of each adjusting item represent a ratable allocation of the total difference between the unadjusted tax expense and the total adjusted tax expense, computed without consideration of any adjusting items using a with and without approach.   We may disclose forward-looking adjusted EBITDA because we cannot adequately forecast certain items and events that may or may not impact us in the near future, such as business acquisition and integration expenses and purchase accounting inventory adjustments, net, certain legal and other settlements and related expenses, gains on sale of businesses/assets and certain tax only items, including tax law changes not yet enacted. Each of such adjustment has not yet occurred, is out of our control and/or cannot be reasonably predicted. In our view, our forward-looking adjusted EBITDA represents the forecast net income on our underlying business operations but does not reflect any adjustments related to the items noted above that may occur and can cause our adjusted EBITDA to differ.   (2) We believe free cash flow is an important indicator of our liquidity as it measures the amount of cash we generate. Management internally uses free cash flow measure to: (a) evaluate our liquidity, (b) evaluate strategic investments, (c) plan stock buyback and dividend levels and (d) evaluate our ability to incur and service debt. Free cash flow is defined as net cash provided by (used in) operating activities less capital expenditures. Free cash flow is not a defined term under U.S. GAAP, and it should not be inferred that the entire free cash flow amount is available for discretionary expenditures.   (3) We believe the adjusted effective tax rate provides improved comparability between periods through the exclusion of certain items that management believes are not indicative of the businesses’ operational profitability and that may obscure underlying business results and trends. In our view, effective tax rate is the performance measure calculated and presented in accordance with U.S. GAAP that is most directly comparable to adjusted effective tax rate. The reconciliation of historical adjusted effective tax rate and effective tax rate is set forth in Table 4 above. Please see the reconciliation of our net income to adjusted net income in Table 4 for details regarding the tax impacts of our non-GAAP adjustments.   (4) Net debt is a measure we use to monitor how much debt we have after taking into account our total cash. We use it as an indicator of our overall financial position, and calculate it by taking our total debt, including the current portion, and subtracting total cash.   (5) Certain prior period amounts have been reclassified in the condensed consolidated financial statements to conform to current period presentation.   About Huntsman:   Huntsman Corporation is a publicly traded global manufacturer and marketer of diversified chemical products with 2025 revenues of approximately $6 billion from our continuing operations. Our chemical products number in the thousands and are sold worldwide to manufacturers serving a broad and diverse range of consumer and industrial end markets. We operate more than 55 manufacturing, R&D and operations facilities in approximately 25 countries and employ approximately 6,000 associates within our continuing operations. For more information about Huntsman, please visit the company's website at  www.huntsman.com .   Social Media:   X: http://www.x.com/Huntsman_Corp Facebook: www.facebook.com/huntsmancorp LinkedIn: www.linkedin.com/company/huntsman   - 9 -      Forward-Looking Statements:   This press release includes "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These forward-looking statements include statements concerning our plans, objectives, goals, strategies, future events, future revenue or performance, capital expenditures, financing needs, plans or intentions relating to acquisitions, divestitures or strategic transactions, including the planned merger of equals with Olin Corporation, statements about the anticipated benefits of the contemplated transaction, including future expected synergies and cost savings related to the contemplated transaction, the plans, objectives, expectations and intentions of Olin, Huntsman or the combined company business trends and any other information that is not historical information. When used in this press release, the words "estimates," "expects," "anticipates," "likely," "projects," "outlook," "plans," "intends," "believes," "forecasts," or future or conditional verbs, such as "will," "should," "could" or "may," and variations of such words or similar expressions are intended to identify forward-looking statements. These forward-looking statements, including, without limitation, management's examination of historical operating trends and data, are based upon our current expectations and various assumptions and beliefs. In particular, such forward-looking statements are subject to uncertainty and changes in circumstances and involve risks and uncertainties that may affect the Company's operations, markets, products, prices and other factors as discussed in the Company's filings with the Securities and Exchange Commission (the "SEC"). Significant risks and uncertainties may relate to, but are not limited to, uncertainties as to the timing of the contemplated merger; uncertainties as to the approval of Huntsman's stockholders and Olin's shareholders required in connection with the contemplated merger; the possibility that the closing conditions to the contemplated merger may not be satisfied or waived, including that a governmental entity may prohibit, delay or refuse to grant a necessary regulatory approval; the effects of disruption caused by the announcement of the contemplated merger making it more difficult to maintain relationships with employees, customers, vendors and other business partners; the risk that stockholder litigation in connection with the contemplated merger may affect the timing or occurrence of the contemplated merger or result in significant costs of defense, indemnification and liability; ability to refinance existing indebtedness of Huntsman in connection with the contemplated merger; other business effects, including the effects of industry, economic or political conditions outside of the control of the parties to the contemplated merger; transaction costs, high energy costs in Europe, inflation and high capital costs, geopolitical instability, volatile global economic conditions, cyclical and volatile product markets, disruptions in production at manufacturing facilities, reorganization or restructuring of the Company's operations, including any delay of, or other negative developments affecting the ability to implement cost reductions and manufacturing optimization improvements in the Company's businesses and to realize anticipated cost savings, and other financial, operational, economic, competitive, environmental, political, legal, regulatory and technological factors. Any forward-looking statement should be considered in light of the risks set forth under the caption "Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2025, which may be supplemented by other risks and uncertainties disclosed in any subsequent reports filed or furnished by the Company from time to time. All forward-looking statements apply only as of the date made. Except as required by law, the Company undertakes no obligation to update or revise forward-looking statements to reflect events or circumstances that arise after the date made or to reflect the occurrence of unanticipated events.   - 10 -      Additional Information and Where to Find It   This release may be deemed to be solicitation material in respect of the proposed transaction between Olin Corporation (“Olin”) and Huntsman Corporation (“Huntsman”). In connection with the proposed transaction, Olin and Huntsman have filed and intend to file relevant materials with the United States Securities and Exchange Commission (the “SEC”), including, among other filings, an Olin registration statement on Form S-4, as filed on July 2, 2026 and as amended on July 10, 2026 (the “Form S-4”), in connection with the proposed issuance of shares of Olin’s common stock pursuant to the proposed transaction, which Form S-4 contains a joint proxy statement/prospectus of Olin and Huntsman. The registration statement was declared effective by the SEC on July 13, 2026 and Olin filed a prospectus and each of Olin and Huntsman filed a definitive proxy statement, respectively, and commenced mailing the definitive joint proxy statement/prospectus on July 13, 2026 to each of the shareholders of Olin and stockholders of Huntsman entitled to vote on their respective transaction-related proposals at the respective special meetings. INVESTORS AND STOCKHOLDERS OF OLIN AND HUNTSMAN ARE URGED TO READ ALL RELEVANT DOCUMENTS FILED WITH THE SEC IN THEIR ENTIRETY, INCLUDING THE REGISTRATION STATEMENT AND THE DEFINITIVE JOINT PROXY STATEMENT/PROSPECTUS, AS EACH MAY BE AMENDED OR SUPPLEMENTED FROM TIME TO TIME, BECAUSE THEY CONTAIN OR WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION, THE PARTIES TO THE PROPOSED TRANSACTION AND ANY SOLICITATION. This release is not a substitute for the registration statement, the definitive joint proxy statement/prospectus or any other document that Olin or Huntsman may file with the SEC and send to their respective shareholders and stockholders in connection with the proposed transaction. Investors and securityholders will be able to obtain free copies of the registration statement and the definitive joint proxy statement/prospectus, as each may be amended or supplemented from time to time, and other relevant documents filed with the SEC by Olin and Huntsman from the SEC’s website at http://www.sec.gov, on Olin’s website at https://olin.com under the tab “Investors” and under the heading “SEC Filings” and on Huntsman’s website at https://www.huntsman.com under the tab “Investors” and under the heading “Financials” and subheading “SEC filings.”   Participants in the Solicitation   Olin, Huntsman, their respective directors, executive officers and certain other members of management and employees, under SEC rules, may be deemed to be “participants” in the solicitation of proxies from Olin’s shareholders and Huntsman’s stockholders in connection with the proposed transaction. Information about Olin’s directors and executive officers is set forth in Olin’s Proxy Statement on Schedule 14A for its 2026 Annual Meeting of shareholders, which was filed with the SEC on March 20, 2026, its Annual Report on Form 10-K for the year ended December 31, 2025, which was filed with the SEC on February 20, 2026, its Current Report on Form 8-K, which was filed with the SEC on April 30, 2026, and subsequent statements of changes in beneficial ownership on file with the SEC, including the Initial Statements of Beneficial Ownership on Form 3, Statements of Change in Ownership on Form 4 or Annual Statements of Beneficial Ownership on Form 5 on file with the SEC, including filings made on March 20, 2026, May 5, 2026, May 5, 2026, May 5, 2026, May 5, 2026, May 5, 2026, May 5, 2026, May 5, 2026, May 5, 2026, May 19, 2026, June 3, 2026 and June 18, 2026. Information about Huntsman’s directors and executive officers is set forth in the Huntsman Proxy Statement on Schedule 14A for its 2026 Annual Meeting of stockholders, which was filed with the SEC on March 16, 2026, its Annual Report on Form 10-K for the year ended December 31, 2025, which was filed with the SEC on February 18, 2026, its Current Report on Form 8-K, which was filed with the SEC since May 1, 2026, and subsequent statements of changes in beneficial ownership on file with the SEC, including the Initial Statement of Beneficial Ownership on Form 3, Statements of Change in Ownership on Form 4 or Annual Statements of Beneficial Ownership on Form 5 on file with the SEC, including filings made on June 3, 2026.   Additional information concerning the interests of potential participants in the solicitation of proxies in connection with the proposed transaction, which may, in some cases, be different than those of Olin’s shareholders or Huntsman’s stockholders generally, are set forth in the registration statement, the definitive joint proxy statement/prospectus and other relevant materials filed with and to be filed with the SEC relating to the proposed transaction. You may obtain these documents free of charge through the website maintained by the SEC at http://www.sec.gov and from the Olin or Huntsman websites described above.   No Offer or Solicitation   This release does not constitute an offer to sell or the solicitation of an offer to buy or exchange any securities or a solicitation of any vote or approval in any jurisdiction. It does not constitute a prospectus or prospectus equivalent document. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the U.S. Securities Act of 1933, as amended.   - 11 -