Material Event (Form 8-K)

Item 8.01 Other Events.

On March 10, 2026, Ironwood Pharmaceuticals, Inc. (the "Company") notified Wells Fargo Bank, National Association, as administrative agent (in such capacity, the "Agent"), under the Credit Agreement, dated May 21, 2023, as amended by Amendment No. 1 to Credit Agreement, dated September 27, 2024 (the "Amended Credit Agreement," and collectively, the "Credit Agreement"), by and among the Company, as borrower, the Agent and the other agents, lenders and letter of credit issuers parties thereto, that the Company satisfied the liquidity conditions set forth in the definition of "Maturity Date" in the Credit Agreement. Accordingly, the maturity date for the revolving credit facility provided under the Credit Agreement remains December 31, 2028, subject to the other terms and conditions of the Credit Agreement.