X0303 4 2011-02-22 false 0001168054 CIMAREX ENERGY CO XEC 0001196800 HENTSCHEL DAVID A C/O CIMAREX ENERGY CO. 1700 LINCOLN STREET, SUITE 1800 DENVER CO 80203 true false false false Common Stock 10003 I Family Trust Common Stock 2011-02-22 4 S false 5000 114.7577 D 14097 D The price reported in Column 4 for February 22, 2011 sales is a weighted average price. These shares were sold in transactions at prices ranging from $114.70 to $114.91, 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 2011-02-22