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

Group 1 - ONE Gas, Inc. will participate in the American Gas Association and Jefferies Europe Mini-Forum on June 16-17, 2025, in London and Zurich [1] - The company is a 100-percent regulated natural gas utility and trades on the New York Stock Exchange under the symbol "OGS" [2] - ONE Gas is included in the S&P MidCap 400 Index and is one of the largest natural gas utilities in the United States [2] Group 2 - ONE Gas provides reliable and affordable energy to over 2.3 million customers in Kansas, Oklahoma, and Texas [3] - The company's 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 by customer count [3]