A Dark Vector Cognition product

Item 16. FORM 10-K SUMMARY

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Item 16. FORM 10-K SUMMARY

None.

Table of Contents

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Exchange Act, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

ONEOK, Inc.
Registrant
Date: February 24, 2026By:/s/ Walter S. Hulse III
Walter S. Hulse III
Chief Financial Officer, Treasurer and
Executive Vice President, Investor Relations
and Corporate Development
(Principal Financial Officer)

Pursuant to the requirements of the Exchange Act, this report has been signed below by the following persons on behalf of the registrant and in the capacities indicated on this 24th day of February 2026.

/s/ Julie H. Edwards/s/ Pierce H. Norton II
Julie H. EdwardsPierce H. Norton II
Board ChairPresident, Chief Executive Officer and
Director
/s/ Walter S. Hulse III/s/ Mary M. Spears
Walter S. Hulse IIIMary M. Spears
Chief Financial Officer, Treasurer andSenior Vice President and Chief
Executive Vice President, InvestorAccounting Officer, Finance and Tax
Relations and Corporate Development
/s/ Brian L. Derksen/s/ Pattye L. Moore
Brian L. DerksenPattye L. Moore
DirectorDirector
/s/ Lori A. Gobillot/s/ Precious W. Owodunni
Lori A. GobillotPrecious W. Owodunni
DirectorDirector
/s/ Mark W. Helderman/s/ Eduardo A. Rodriguez
Mark W. HeldermanEduardo A. Rodriguez
DirectorDirector
/s/ Randall J. Larson/s/ Gerald B. Smith
Randall J. LarsonGerald B. Smith
DirectorDirector
/s/ Mark A. McCollum/s/ Wayne T. Smith
Mark A. McCollumWayne T. Smith
DirectorDirector

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