X0306 4 2018-07-19 1 0001588216 RSP Permian, Inc. RSPP 0001607482 Datla Uma L. 3141 HOOD STREET, SUITE 500 DALLAS TX 75219 0 1 0 0 Chief Accounting Officer Common Stock 2018-07-19 4 A 0 1957 A 17614 D Common Stock 2018-07-19 4 D 0 17614 D 0 D On July 19, 2018, pursuant to the Agreement and Plan of Merger dated as of March 27, 2018 (the "Merger Agreement"), by and among Concho Resources Inc. ("Concho"), Green Merger Sub Inc. ("Merger Sub") and RSP Permian, Inc. ("RSP"), Merger Sub merged with and into RSP (the "Merger"), with RSP surviving the Merger as a wholly-owned subsidiary of Concho. Immediately prior to the effective time of the Merger (the "Effective Time"), the outstanding awards of performance-based restricted stock of RSP vested based on RSP's performance through the Effective Time, as determined by the RSP board of directors, and each vested share of performance-based restricted stock was converted into the right to receive 0.320 of a share of Concho common stock. (Continued from Footnote 1) On July 18, 2018 (the day prior to the Merger), the closing price of one share of Concho common stock was $149.66. Withholding for the payment of tax liabilities in connection with the vesting of restricted stock awards was effectuated following the conversion into shares of Concho common stock. Pursuant to the Merger Agreement, each share of RSP common stock issued and outstanding immediately prior to the Effective Time (including each outstanding share of time-based restricted stock of RSP that vested in full and was treated as a share of RSP common stock for purposes of the Merger Agreement) was converted into the right to receive 0.320 of a share of Concho common stock. On July 18, 2018 (the day prior to the Merger), the closing price of one share of Concho common stock was $149.66. /s/James E. Mutrie, attorney-in-fact for Uma L. Datla 2018-07-20