Exhibit 99.1
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June 9, 2025Analyst Contact:Erin Dailey
918-947-7411
Media Contact:Leah Harper
918-947-7123


ONE Gas to Participate in American Gas Association and Jefferies Europe Mini-Forum

TULSA, Okla. – June 9, 2025 – ONE Gas, Inc. (NYSE: OGS) today announced it will participate in the American Gas Association and Jefferies Europe Mini-Forum, June 16-17, 2025, in London and Zurich.

Robert S. McAnnally, president and chief executive 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.


ONE Gas, Inc. (NYSE: OGS) is a 100-percent regulated natural gas utility, and trades on the New York Stock Exchange under the symbol "OGS." ONE Gas is included in the S&P MidCap 400 Index and is one of the largest natural gas utilities in the United States.

Headquartered in Tulsa, Oklahoma, ONE Gas provides a reliable and affordable energy choice to more than 2.3 million customers in Kansas, Oklahoma and Texas. Its divisions include Kansas Gas Service, the largest natural gas distributor in Kansas; Oklahoma Natural Gas, the largest in Oklahoma; and Texas Gas Service, the third largest in Texas, in terms of customers.

For more information and the latest news about ONE Gas, visit onegas.com and follow its social channels: @ONEGas, Facebook, LinkedIn and YouTube.

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