Exhibit 99.1

N E W S

Cimarex Announces Offering of Senior Unsecured Notes

DENVER, May 20, 2014 - Cimarex Energy Co. (NYSE: XEC) (“Cimarex”) today announced that it intends, subject to market conditions, to publicly offer $600 million aggregate principal amount of senior unsecured notes due 2024 in a registered underwritten offering.

Net proceeds from the offering will be used to repay in full amounts outstanding under its revolving credit facility and for general corporate purposes.

Wells Fargo Securities, LLC, Deutsche Bank Securities Inc., J.P. Morgan Securities LLC, Mitsubishi UFJ Securities (USA), Inc. and U.S. Bancorp Investments, Inc. will act as joint book-running managers for the offering.

The offering will be made pursuant to an effective registration statement previously filed with the Securities and Exchange Commission (“SEC”) on Form S-3 and available for review on the SEC’s website at www.sec.gov.  This announcement is neither an offer to sell nor a solicitation of an offer to buy any of the senior notes referred to above. An offering of any such securities will be made only by means of a prospectus forming a part of the effective registration statement, the preliminary prospectus supplement thereto and other related documents. Any such documents shall not constitute an offer to sell or the solicitation of an offer to buy, 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. Copies of these documents can be obtained from Wells Fargo Securities, LLC at 550 South Tryon Street, 7th Floor, MAC D1086-070, Charlotte, NC, 28202, or via phone at 1-800-326-5897, or by email at cmclientsupport@wellsfargo.com; or Deutsche Bank Securities Inc. at 60 Wall Street, New York, NY 10005, attention: Prospectus Group, or via phone at 1-800-503-4611, or by email at prospectus.cpdg@db.com; or J.P. Morgan Securities LLC at 383 Madison Avenue, New York, NY 10179, attention: High Yield Syndicate, or via phone at 1-800-245-8812, or by email at HY_syndicate@jpmorgan.com; or Mitsubishi UFJ Securities (USA), Inc. at 1633 Broadway, 29th Floor, New York, NY 10019, attention: Capital Markets Group, or via phone at 1-212-405-7440; or U.S. Bancorp Investments, Inc. at 214 North Tyron Street, 26th Floor, Charlotte, NC 28202, attention: Non-Investment Grade Syndicate, or via phone at 1-800-558-2607.

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.

This communication contains statements that constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995.  These statements are based on current expectations and beliefs and are subject to a number of risks, uncertainties and assumptions that could cause actual results to differ materially from those described in the forward-looking statements. These risks and uncertainties are more fully described in SEC reports filed by Cimarex. While Cimarex makes these forward-looking statements in good faith, management cannot guarantee that anticipated future results will be achieved. Cimarex assumes no obligation and expressly disclaims any duty to update the information contained herein except as required by law.  Actual results may differ materially from Cimarex projections and can be affected by a variety of factors outside Cimarex’s control, including the risks and uncertainties described in Cimarex’s SEC reports.

FOR FURTHER INFORMATION CONTACT
Cimarex Energy Co.
Karen Acierno, 303.285.4957
Mark Burford, 303.295.3995