X0303 4 2011-02-22 false 0001168054 CIMAREX ENERGY CO XEC 0001196778 BELL STEPHEN P 1700 LINCOLN STREET SUITE 1800 DENVER CO 80203 false true false false Sr VP Common Stock 127863 D Common Stock 2011-02-22 4 S false 14696 115.41 D 72137 I By revocable trust Represents shares subject to performance awards. The price reported in Column 4 for February 22, 2011 sales is a weighted average price. These shares were sold in multiple transactions at prices ranging from $114.70 to $116.00, 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. Thomas A. Richardson, attorney in fact 2011-02-22