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Cimarex Energy Co. (XEC) announced the closing of its previously announced public offering of 6,000,000 shares of its common stock and the full exercise of the underwriters’ option to purchase 900,000 additional shares. Net proceeds of approximately $730 million, after deducting underwriting fees, are expected to be used for general corporate purposes and to fund increased drilling and completion activity in the second half of 2015 and more significantly in 2016.

J.P. Morgan and Barclays acted as joint book-running managers for the offering. Copies of the prospectus supplement and the accompanying base prospectus related to the offering may be obtained on the Securities and Exchange Commission’s website at www.sec.gov.  Alternatively, the underwriters will arrange to send you the preliminary prospectus supplement and related base prospectus if you request them by contacting: J.P. Morgan, via Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York, 11717, by calling: (866) 803-9204 or by emailingprospectus-eq_fi@jpmorgan.com or Barclays Capital Inc., via Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, by calling: (866) 603-5847 or by emailingbarclaysprospectus@broadridge.com.

This press release is neither an offer to sell nor a solicitation of an offer to buy any securities, nor shall there be any sale of any such securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.  A registration statement relating to the securities has been filed and became effective September 17, 2012.

About Cimarex Energy

Denver-based Cimarex Energy Co. is an independent oil and gas exploration and production company with principal operations in the Mid-Continent and Permian Basin areas of the U.S.