X0306 4 2019-02-08 0 0001433270 ANTERO RESOURCES Corp AR 0001586805 Kilstrom Kevin J. 1615 WYNKOOP STREET DENVER CO 80202 0 1 0 0 Senior VP-Production Common stock, par value $0.01 per share 2019-02-08 4 F 0 8446 8.83 D 110400 D Common stock, par value $0.01 per share 2019-02-08 4 M 0 9722 A 120122 D Common stock, par value $0.01 per share 2019-02-08 4 F 0 3333 8.83 D 116789 D Performance share units 2019-02-08 4 M 0 9722 D Common stock, par value $0.01 per share 9722 83334 D In connection with the vesting of restricted stock units pursuant to the Antero Resources Corporation Long-Term Incentive Plan, the Issuer withheld shares that would otherwise have been issued to the Reporting Person to satisfy its tax withholding obligations. The number of shares withheld was determined based on the closing price per share on February 8, 2019. Includes 34,049 shares of common stock subject to previously granted restricted stock unit awards that remain subject to vesting. Each performance share unit represented a contingent right to receive one share of the Issuer's common stock upon the achievement of performance metrics established by the compensation committee of the Issuer's board of directors tied to the 10-day weighted average stock price of the Issuer's common stock and satisfaction of certain time-based vesting conditions during the period beginning on the date of grant and ending on the fifth anniversary thereof. In connection with the vesting of performance share units pursuant to the Antero Resources Corporation Long-Term Incentive Plan, the Issuer withheld shares that would otherwise have been issued to the Reporting Person to satisfy its tax withholding obligations. The number of shares withheld was determined based on the closing price per share on February 8, 2019. Includes options to purchase 25,000 shares of common stock, including options to purchase 18,750 shares of common stock that are vested and exercisable and options to purchase 6,250 shares of common stock that vest and become exercisable on the next anniversary of the grant date so long as the Reporting Person remains continuously employed by the Issuer through such anniversary date. Each option to purchase common stock expires ten years from the date of grant, or April 15, 2025. Includes 58,334 performance share units that represent a contingent right to receive one share of the Issuer's common stock upon the achievement of performance metrics established by the compensation committee of the Issuer's board of directors tied to the 10-day weighted average stock price of the Issuer's common stock and satisfaction of certain time-based vesting conditions during the period beginning on the date of grant and ending on the fifth anniversary thereof. /s/ Alvyn A. Schopp, as attorney-in-fact for Kevin J. Kilstrom 2019-02-12