X0306 4 2017-12-12 false 0001168054 CIMAREX ENERGY CO XEC 0001306332 Barron Francis Brian 1700 LINCOLN STREET SUITE 3700 DENVER CO 80203 false true false false Sr VP-General Counsel Common Stock 2017-12-12 4 S false 2000 112.092 D 87723 D Common Stock 2017-12-13 4 S false 1000 113.5848 D 86723 D The price reported in Column 4 for December 12, 2017 sales is a weighted average price. These shares were sold in multiple transactions at prices ranging from $111.68 to $112.3550, 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 63,960 shares of restricted stock subject to service-based vesting and the satisfaction of certain performance criteria. Francis B. Barron 2017-12-14