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)			February 24, 2026
(Date of earliest event reported)			February 24, 2026

ONE Gas, Inc.

(Exact name of registrant as specified in its charter)

Oklahoma

001-36108

46-3561936

(State or other jurisdiction

(Commission

(IRS Employer

of incorporation)

File Number)

Identification No.)

15 East Fifth Street; Tulsa, OK

(Address of principal executive offices)

74103

(Zip code)

(918) 947-7000

(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

Name of each exchange on which registered

Common Stock, par value $0.01 per share

OGS

New York Stock Exchange

NYSE Texas

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

☐ 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 7.01		Regulation FD Disclosure

		On February 24, 2026, we announced our participation in several upcoming investor conferences. We will be participating in the UBS Midwest Utilities Conference on Wednesday, February 25, 2026, in Chicago, Illinois, followed by the Morgan Stanley Energy and Power Conference on Monday, March 2, 2026, and the Jefferies Power, Utilities and Clean Energy Conference on Tuesday, March 3, 2026, both in New York City, New York. The news release is furnished as Exhibit 99.1 and incorporated by reference herein. Curtis Dinan, senior vice president and chief operating officer, and Christopher Sighinolfi, senior vice president and chief financial officer, will be in attendance at all three conferences. They will conduct a series of meetings with members of the investment community at each event. The materials utilized at the conferences will be accessible on the ONE Gas website, www.onegas.com/investors/events-and-presentations. The information disclosed in Item 7.01, including Exhibit 99.1 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the Exchange Act), or otherwise subject to the liabilities under that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act except as expressly set forth by specific reference in such filing.

Item 9.01		Financial Statements and Exhibits

	(d)	Exhibits

Exhibit Number		Description

99.1		News release issued by ONE Gas, Inc. dated February 24 , 202 6 .

104		Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURE

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.


			ONE Gas, Inc.

Date:	February 24, 2026	By:	/s/ Christopher P. Sighinolfi
			Christopher P. Sighinolfi Senior Vice President and Chief Financial Officer

ONE Gas, Inc. 8-K