X0306 4 2022-11-01 0 0001587732 ONE Gas, Inc. OGS 0001951536 Brumfield Brian F. 15 E. 5TH STREET TULSA OK 74103 0 1 0 0 See remarks Restricted Units 2022 2022-11-01 4 A 0 1749 80.03 A Common stock, par value $0.01 1749 1749 D Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 15, 2025. During the vesting period, the award will be credited with dividend equivalents that will be paid out in shares of common stock at the time the underlying units vest and are issued. The award and credited dividend equivalents will be payable one share of the Issuer's common stock for each vested restricted unit and dividend equivalent. Vice President, Chief Accounting Officer and Controller /s/ Brian K. Shore, Attorney-in-Fact for Brian F. Brumfield 2022-11-03