| Date of report (Date of earliest event reported) | |||||

| (State or other jurisdiction | (Commission | (IRS Employer | ||||||||||||
| of incorporation) | File Number) | Identification No.) | ||||||||||||
| Title of each class | Trading Symbol(s) | Name of each exchange on which registered | ||||||
| Item 5.02 | Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | |||||||
| On March 20, 2026, Pattye L. Moore informed the Board of Directors (the “Board”) of ONEOK, Inc. (“ONEOK”) of her decision to retire from the Board at the end of her current term and not stand for re-election as a director at ONEOK’s 2026 annual meeting of shareholders (the “Annual Meeting”), which is scheduled for May 20, 2026. Ms. Moore’s current term as a director is scheduled to expire on the date of the Annual Meeting. Ms. Moore’s decision to retire and not stand for re-election is not a result of any disagreement with ONEOK, including on any matter relating to its operation, policies or practices. ONEOK also announced on March 25, 2026, that Gerald B. Smith will not be standing for re-election to the Board due to the Company’s mandatory age retirement policy, which provides that a director will retire from the Board no later than immediately prior to the annual meeting of shareholders following a director’s 75th birthday. Mr. Smith’s current term is scheduled to expire on the date of the Annual Meeting. Mr. Smith’s decision to retire and not stand for re-election is not a result of any disagreement with ONEOK, including on any matter relating to its operation, policies or practices. | ||||||||
| Item 9.01 | Financial Statements and Exhibits | |||||||
| (d) | Exhibits | |||||||
| Exhibit number | Description | |||||||
| 99.1 | ||||||||
| 104 | Cover page interactive data file (embedded within the Inline XBRL document and contained in Exhibit 101). | |||||||
| ONEOK, Inc. | |||||||||||
| Date: | March 25, 2026 | By: | /s/ Walter S. Hulse III | ||||||||
| Walter S. Hulse III Chief Financial Officer, Treasurer and Executive Vice President, Investor Relations and Corporate Development | |||||||||||