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Form 8-K

sec.gov

8-K — ONEOK INC /NEW/

Accession: 0001039684-26-000022

Filed: 2026-05-21

Period: 2026-05-20

CIK: 0001039684

SIC: 4923 (NATURAL GAS TRANSMISSION & DISTRIBUTION)

Item: Submission of Matters to a Vote of Security Holders

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) May 20, 2026

ONEOK, Inc.

(Exact name of registrant as specified in its charter)

Oklahoma 001-13643 73-1520922

(State or other jurisdiction (Commission (IRS Employer

of incorporation) File Number) Identification No.)

100 West Fifth Street; Tulsa, OK

(Address of principal executive offices)

74103

(Zip code)

(918) 588-7000

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common stock, par value of $0.01 OKE New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐

Item 5.07 Submission of Matters to a Vote of Security Holders

At the Annual Meeting of Shareholders (the “Annual Meeting”) of ONEOK, Inc. (the “Company”) held on May 20, 2026, the Company’s shareholders voted on the following three proposals, each of which is described in more detail in the Company’s definitive proxy statement on Schedule 14A, as filed with the Securities and Exchange Commission on April 1, 2026. The final vote results for each proposal were as follows:

Proposal 1: Election of Directors

The shareholders elected each of the director nominees set forth below to serve on the Company’s Board of Directors (the “Board”) for a one-year term expiring at the Company’s 2027 Annual Meeting of Shareholders:

Director Votes For Votes Against Abstain Broker Non-Votes

Brian L. Derksen 445,708,516 8,306,618 1,193,269 104,109,707

Julie H. Edwards 438,637,276 15,491,472 1,079,656 104,109,707

Lori A. Gobillot 448,021,832 5,734,515 1,452,056 104,109,707

Mark W. Helderman 447,947,986 6,055,710 1,204,708 104,109,707

Randall J. Larson 426,310,931 25,516,128 3,381,344 104,109,707

Mark A. McCollum 450,700,174 3,287,376 1,220,854 104,109,707

Pierce H. Norton II 449,817,473 4,129,359 1,261,571 104,109,707

Precious Williams Owodunni 449,677,618 4,282,443 1,248,342 104,109,707

Eduardo A. Rodriguez 435,026,608 18,925,299 1,256,497 104,109,707

Wayne T. Smith 448,040,589 5,924,621 1,243,193 104,109,707

Proposal 2: Ratify the Selection of PricewaterhouseCoopers LLP as Independent Registered Public Accounting Firm for the Year Ending December 31, 2026

The appointment of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026 was ratified by the shareholders, with votes cast as follows:

Votes For Votes Against Abstain Broker Non-Votes

551,715,532 6,330,042 1,272,536 -

Proposal 3: Advisory Vote on Executive Compensation

The shareholders approved a non-binding resolution to approve the Company’s executive compensation program, with votes cast as follows:

Votes For Votes Against Abstain Broker Non-Votes

428,986,336 22,828,183 3,393,885 104,109,707

2

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.

ONEOK, Inc.

Date: May 21, 2026 By: /s/ Walter S. Hulse III

Walter S. Hulse III

Chief Financial Officer, Treasurer and

Executive Vice President, Investor Relations and Corporate Development

3

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May 20, 2026

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Entity Registrant Name

ONEOK, Inc.

Entity Incorporation, State or Country Code

OK

Entity File Number

001-13643

Entity Tax Identification Number

73-1520922

Entity Address, Address Line One

100 West Fifth Street

Entity Address, City or Town

Tulsa

Entity Address, State or Province

OK

Entity Address, Postal Zip Code

74103

City Area Code

918

Local Phone Number

588-7000

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OKE

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NYSE

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