X0306 4 2017-12-13 false 0001168054 CIMAREX ENERGY CO XEC 0001558615 Lambuth John 1700 LINCOLN STREET SUITE 3700 DENVER CO 80203 false true false false SVP-Exploration Common Stock 2017-12-13 4 S false 13000 113.7384 D 113068 D The price reported in Column 4 for December 13, 2017 sales is a weighted average price. These shares were sold in multiple transactions at prices ranging from $113.2800 to $114.2500, inclusive. The reporting person undertakes to provide to Cimarex Energy Co., any security holder of Cimarex Energy Co. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The amount of shares beneficially owned as reported in column 5 includes 104,887 shares of restricted stock subject to service-based vesting and the satisfaction of certain performance criteria. Francis B. Barron, as Attorney-in-Fact 2017-12-15