X0303 4 2011-04-06 0001168054 CIMAREX ENERGY CO XEC 0001237480 SHONSEY JAMES H 1700 LINCOLN STREET SUITE 1800 DENVER CO 80203 0 1 0 0 VP, Controller Common Stock 2011-04-06 4 S 0 5891 114.9548 D 38484 D The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $114.8633 to $115.10, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 range set forth in this Form 4. /s/ James H. Shonsey 2011-04-07