ONE Gas, Inc. ("ONE Gas") (NYSE:OGS) announced today that it plans to make a public offering of 2,500,000 shares of its common stock. In connection with the offering, ONE Gas intends to enter into a forward sale agreement with JPMorgan Chase Bank, National Association, referred to in such capacity as the forward purchaser. In connection with the forward sale agreement, the forward purchaser or its affiliate, acting as forward seller, at ONE Gas' request, expects to borrow from third parties and sell 2,500,000 shares of ONE Gas' common stock to the underwriter in the offering in connection with the forward sale agreement described below. As part of the offering, ONE Gas intends to grant to the underwriter an option to purchase up to 375,000 additional shares of ONE Gas' common stock. If such option is exercised, ONE Gas may, in its sole discretion, enter into an additional forward sale agreement with the forward purchaser with respect to such additional shares, and ONE Gas currently expects that, if such option is exercised, it will do so.