ONE Gas to Participate in American Gas Association Mini-Forum

Group 1 - ONE Gas, Inc. will participate in the American Gas Association Mini-Forum on September 15-16, 2025, in Boston, with senior executives conducting meetings with the investment community [1] - ONE Gas is a 100-percent regulated natural gas utility, trading on the NYSE under the symbol "OGS," and is included in the S&P MidCap 400 Index [2] - The company serves over 2.3 million customers across Kansas, Oklahoma, and Texas, with divisions including Kansas Gas Service, Oklahoma Natural Gas, and Texas Gas Service [3] Group 2 - The board of directors of ONE Gas declared a quarterly dividend of 67 cents per share of common stock, payable on September 3, 2025 [6]