OGS One Gas, Inc. - 8-K

Item 7.01

Regulation FD Disclosure

On May 26, 2026, we announced we will participate in the Bank of America Power, Utilities and Cleantech Conference on Wednesday, May 27, 2026, in New York City, New York.

Curtis Dinan, president and chief operating officer, and Christopher Sighinolfi, senior vice president and chief financial 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 Ma y 26, 2026 .

104

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

3