0001587732 2022-01-18 2022-01-18 0001587732 false false 8-K 2022-01-18 ONE Gas, Inc. OK 001-36108 46-3561936 15 East Fifth Street Tulsa OK 74103 (918) 947-7000 false false false false Common Stock, par value $0.01 per share OGS NYSE false