X0306 4 2018-08-30 false 0001168054 CIMAREX ENERGY CO XEC 0001244213 STEWART LISA A C/O CIMAREX ENERGY CO. 1700 LINCOLN STREET SUITE 3700 DENVER CO 80203 true false false false Common Stock 6576 D Common Stock 2018-08-30 4 P false 320 84.0544 A 1290 I By IRA Represents 3,085 shares of service-based restricted stock. The price reported in Column 4 for August 30, 2018 purchase is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $83.99 to $84.14, 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 purchased at each separate price within the ranges set forth in this footnote. Francis B. Barron, as Attorney-in-Fact 2018-08-30