X0306 4 2018-07-19 false 0001358071 CONCHO RESOURCES INC CXO 0001086699 GRAY STEVEN D ONE CONCHO CENTER 600 W. ILLINOIS AVE. MIDLAND TX 79701 true false false false Common Stock 8017 I See Footnote Common Stock 2018-07-19 4 A false 608 0 A 184091 D The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for Section 16 or any other purpose. These securities are owned directly by a limited liability company, of which the reporting person and his wife are the only two members. Represents a restricted stock grant that vests in a single installment on January 2, 2019. /s/ Travis L. Counts, as attorney-in-fact 2018-07-23