[8-K] ONE Gas, Inc. Reports Material Event

Rhea-AI Filing Summary

ONE Gas, Inc. filed a current report to let investors know it will participate in several upcoming investor conferences in New York City. Company leaders, including the president and chief executive officer, the senior vice president and chief financial officer, and the senior vice president and chief operating officer, will meet with members of the investment community at these events.

The company will take part in the Mizuho Power, Energy & Infrastructure Conference on December 8, 2025, the Jefferies Gas Utilities Virtual Mini-Conference on December 9, 2025, and the Wells Fargo Midstream, Energy, and Utilities Symposium on December 10, 2025. Presentation materials for these conferences are available on the ONE Gas investor relations website, and the related news release is furnished as an exhibit.

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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)			December 2, 2025
(Date of earliest event reported)			December 2, 2025

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 December 2, 2025, we announced our participation in several upcoming investor conferences in New York City. We will be participating in the Mizuho Power, Energy & Infrastructure Conference on Monday, December 8, 2025, the Jefferies Gas Utilities Virtual Mini-Conference on Tuesday, December 9, 2025, and the Wells Fargo Midstream, Energy, and Utilities Symposium on Wednesday, December 10, 2025. The news release is furnished as Exhibit 99.1 and incorporated by reference herein. Robert S. McAnnally, president and chief executive officer, Christopher Sighinolfi, senior vice president and chief financial officer, and Curtis Dinan, senior vice president and chief operating officer, will be conducting a series of meetings with members of the investment community. The materials utilized at the conference are 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 December 2, 2025.
104						Cover Page Interactive Data File (embedded within the Inline XBRL document).

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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:			December 2, 2025			By:			/s/ Christopher P. Sighinolfi
									Christopher P. Sighinolfi Senior Vice President and Chief Financial Officer

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