X0306 4 2018-02-06 false 0001358071 CONCHO RESOURCES INC CXO 0001396406 Wright E Joseph ONE CONCHO CENTER 600 W. ILLINOIS AVENUE MIDLAND TX 79701 true true false false Exec VP & Chief Operating Off Common Stock 2018-02-06 4 S false 7518 146.11 D 159268 D Common Stock 2018-02-06 4 S false 18468 147.14 D 140800 D Common Stock 2018-02-06 4 S false 24103 147.92 D 116697 D Common Stock 2018-02-06 4 S false 21007 148.94 D 95690 D Common Stock 2018-02-06 4 S false 5863 149.95 D 89827 D Common Stock 2018-02-06 4 S false 3900 150.99 D 85927 D Common Stock 2018-02-06 4 S false 2900 151.96 D 83027 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 16, 2017 in connection with his previously announced upcoming retirement. Represents shares sold at a weighted-average price of open market same-day sale. Sale of shares took place at actual prices ranging from $145.55 to $146.53 per share. Represents shares sold at a weighted-average price of open market same-day sale. Sale of shares took place at actual prices ranging from $146.55 to $147.54 per share. Represents shares sold at a weighted-average price of open market same-day sale. Sale of shares took place at actual prices ranging from $147.55 to $148.54 per share. Represents shares sold at a weighted-average price of open market same-day sale. Sale of shares took place at actual prices ranging from $148.55 to $149.54 per share. Represents shares sold at a weighted-average price of open market same-day sale. Sale of shares took place at actual prices ranging from $149.55 to $150.53 per share. Represents shares sold at a weighted-average price of open market same-day sale. Sale of shares took place at actual prices ranging from $150.55 to $151.51 per share. Represents shares sold at a weighted-average price of open market same-day sale. Sale of shares took place at actual prices ranging from $151.65 to $152.30 per share. /s/ Travis L. Counts, as attorney-in-fact 2018-02-08