OKE: Financial results · Company disclosure

Item 2.02 Results of Operations and Financial Condition On October 27, 2026, we announced our results of operations for the quarter ended September 30, 2026, and increased 2026 financial guidance. The news release is furnished as Exhibit 99.1 and is incorporated by reference herein. Item 7.01 Regulation FD Disclosure On October 27, 2026, we announced our results of operations for the quarter ended September 30, 2026, and increased 2026 financial guidance. The news release is furnished as Exhibit 99.1 and is incorporated by reference herein. Item 9.01 Financial Statements and Exhibits (d) Exhibits Exhibit Number Description 99.1 News release issued by ONEOK, Inc. dated October 2 7 , 2026. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document and contained in Exhibit 101). 2 SIGNATURES Pursuant to the requirements of the Exchange Act, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized. ONEOK, Inc. Date: October 27, 2026 By: /s/ Walter S. Hulse III Walter S. Hulse III Executive Vice President, Chief Financial Officer, Investor Relations and Corporate Development 3