OKE: Material agreement · Company disclosure

Item 1.01 Entry into a Material Definitive Agreement. Equity Distribution Agreement On August 4, 2026, ONEOK, Inc. (“Legacy ONEOK”) entered into an equity distribution agreement (the “Equity Distribution Agreement”) with BofA Securities, Inc. (the “Manager”) and Bank of America, N.A. (the “Forward Purchaser”), pursuant to which Legacy ONEOK may offer and sell up to $1,000,000,000 aggregate offering price of shares of Legacy ONEOK common stock, par value $0.01 per share (the “Shares”), from time to time through the Manager, acting as agent and/or principal (the “Offering”). A copy of the Equity Distribution Agreement was filed as Exhibit 1.1 to the Quarterly Report on Form 10-Q filed by Legacy ONEOK on August 4, 2026. The Shares were initially offered pursuant to Legacy ONEOK’s shelf registration statement on Form S-3 (Registration No. 333-296919), which was filed with the SEC on June 18, 2026, which became effective immediately upon filing (the “Registration Statement”). On September 10, 2026, ONEOK, Inc., an Oklahoma corporation and successor issuer to Legacy ONEOK (“ONEOK”), filed Post-Effective Amendment No. 1, pursuant to which ONEOK assumed Legacy ONEOK’s obligations under the Registration Statement. This Current Report on Form 8-K is being filed to provide exhibits to be incorporated by reference into the Registration Statement. On September 15, 2026, ONEOK, ONEOK, L.L.C., an Oklahoma limited liability company and an indirect subsidiary of ONEOK, the Manager and the Forward Purchaser entered into an amendment to the Equity Distribution Agreement (“Amendment No. 1”) to update defined terms and certain other references to reflect the corporate structure following a series of reorganization transactions. Pursuant to Amendment No. 1, ONEOK assumed Legacy ONEOK’s oblig