X0303 4 2010-02-23 0001358071 CONCHO RESOURCES INC CXO 0001476294 Giraud C William 550 WEST TEXAS AVENUE SUITE 100 MIDLAND TX 79701 0 1 0 0 VP, Gen. Counsel & Secretary Common Stock 2010-02-23 4 A 0 4399 0 A 29256 D Represents a restricted stock grant that vests in four annual installments beginning on February 23, 2011. /s/ C. William Giraud 2010-02-25