Company description

ONE Gas, Inc. is incorporated under the laws of the state of Oklahoma. Our common stock is listed on the NYSE and the NYSE Texas under the trading symbol “OGS,” and is included in the S&P MidCap 400 Index. We are a 100-percent regulated natural gas distribution utility, headquartered in Tulsa, Oklahoma, and one of the largest publicly traded natural gas utilities in the United States. We are the successor to the company founded in 1906 as Oklahoma Natural Gas Company, which became ONEOK, Inc. (NYSE: OKE) in 1980. On January 31, 2014, ONE Gas officially separated from ONEOK, Inc. We provide natural gas distribution services to approximately 2.3 million customers. We are the largest natural gas distributor in Oklahoma and Kansas and the third largest in Texas, in terms of customers. We primarily serve residential, commercial, and transportation customers in all three states. Our largest natural gas distribution markets, in terms of customers, are Oklahoma City and Tulsa, Oklahoma; Kansas City, Wichita, and Topeka, Kansas; and Austin and El Paso, Texas. Our three divisions, Oklahoma Natural Gas, Kansas Gas Service, and Texas Gas Service, distribute natural gas to approximately 89 percent, 72 percent, and 13 percent of the natural gas distribution customers in Oklahoma, Kansas, and Texas, respectively. OUR STRATEGY Our mission is to deliver natural gas for a better tomorrow. Our business strategy is focused on: • Engaged and High-performing Workforce - Our employees are the foundation of the Company.

Read the full filing description · filed 19 Feb 2026

At a glance

Sector

Utilities

Industry

Natural Gas Distribution