X0306 4 2015-02-17 0 0001587732 ONE Gas, Inc. OGS 0001595607 McCormick Joseph L 15 E. 5TH STREET TULSA OK 74103 0 1 0 0 See Remarks Common stock, par value $0.01 2015-02-17 4 M 0 8401 41.40 A 16801 D Common stock, par value $0.01 2015-02-17 4 F 0 2741 41.40 D 14060 D Common stock, par value $0.01 2015-02-17 4 M 0 1632 41.40 A 15692 D Common stock, par value $0.01 2015-02-17 4 F 0 619 41.40 D 15073 D Performance Units 2012 2015-02-17 4 M 0 8401 41.40 D Common stock, par value $0.01 8401 0 D Restricted Units 2012 2015-02-17 4 M 0 1632 41.40 D Common stock, par value $0.01 1632 0 D Performance Units 2015 2015-02-17 4 A 0 5800 41.40 A Common stock, par value $0.01 5800 5800 D Restricted Units 2015 2015-02-17 4 A 0 1450 41.40 A Common stock, par value $0.01 1450 1450 D On January 31, 2014, ONEOK, Inc. ("ONEOK") effected the distribution of 100% of the outstanding shares of common stock of ONE Gas, Inc. ("ONE Gas") held by ONEOK to ONEOK's shareholders (the "Distribution"). In connection with the Distribution, performance units were awarded under ONE Gas' Equity Compensation Plan, pursuant to that certain Employee Matters Agreement by and between ONEOK and ONE Gas, dated January 14, 2014 (the "Employee Matters Agreement"). The award vested on February 15, 2015, and was certified by the Board of Directors on February 17, 2015. A portion of the award, or 1,694 performance units, vested in an amount equal to 150% of the performance units awarded based upon ONE Gas' total stockholder return compared to total stockholder return of a selected peer group. The remainder of the award vested in an amount equal to the number of performance units awarded. The award was payable one share of ONE Gas' common stock for each vested performance unit. Restricted units awarded under ONE Gas' Equity Compensation Plan, pursuant to the Employee Matters Agreement entered into in connection with the Distribution. The award vested on February 15, 2015. The award was payable one share of ONE Gas' common stock for each vested restricted unit. Performance units awarded under the Issuer's Equity Compensation Plan. The award will vest on February 17, 2018, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total stockholder return compared to total stockholder return of a selected peer group. During the 3-year 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 shares are issued. The award and credited dividend equivalents will be payable one share of the Issuer's common stock for each vested performance unit and dividend equivalent. Restricted units awarded under the Issuer's Equity Compensation Plan. The award vests on February 17, 2018. During the 3-year 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. Senior Vice President, General Counsel and Assistant Secretary /s/ Brian K. Shore, Attorney-in-Fact for Joseph L. McCormick 2015-02-19