OLN: Material agreement · New financial obligation

Item 1.01. Entry into a Material Definitive Agreement. Second Amendment to Credit Agreement On October 27, 2026, Olin Corporation (the “Registrant”) entered into an amendment (the “Second Amendment”) to the Credit Agreement dated as of March 14, 2025 (as amended by the First Amendment, dated as of February 19, 2026, the “Existing Credit Agreement”, and as amended by the Second Amendment, the “Amended Credit Agreement”), with the guarantors from time to time party thereto, the lenders and the issuing banks from time to time party thereto and Bank of America, N.A., as administrative agent and collateral agent. The closing of the Second Amendment and the effectiveness of the amendments to the Existing Credit Agreement contemplated thereby are subject to the satisfaction or waiver of specified conditions, including the consummation of the previously announced merger of equals business combination (the “Merger”) between the Registrant and Huntsman Corporation (“Huntsman”) pursuant to the Agreement and Plan of Merger, dated as of June 15, 2026. On the closing date of the Second Amendment (the “Second Amendment Closing Date”), the Amended Credit Agreement will provide the Registrant with a new senior term loan facility in an aggregate principal amount of $750,000,000 (the “Term Loan Facility”) and a new senior revolving credit facility in an aggregate principal amount of $1,750,000,000 (the “Revolving Credit Facility” and, together with the Term Loan Facility, the “Replacement Credit Facilities”). The Registrant will be the sole borrower under the Replacement Credit Facilities. The Registrant will be permitted to add any of its wholly-owned subsidiaries as an additional borrower under the Revolving Credit Facility. During the period from the Second Amendment Closing Date until