X0306 4 2017-11-21 false 0001168054 CIMAREX ENERGY CO XEC 0001196784 ALBI JOSEPH R 1700 LINCOLN STREET SUITE 3700 DENVER CO 80203 true true false false Executive VP, COO Common Stock 112466 D Common Stock 800 I By IRA Common Stock 311 I By 401(k) Common Stock 2017-11-21 4 S false 1750 114.7782 D 11867 I By Trust Represents shares subject to service-based vesting and the satisfaction of certain performance criteria. The price reported in Column 4 for November 21, 2017 sales is a weighted average price. These shares were sold in multiple transactions at prices ranging from $114.76 to $114.80, 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. Francis B. Barron, as Attorney-in-Fact 2017-11-22