Cimarex Prices $350M of Senior Notes

Cimarex Energy Co. has sold $350 million of 7.125% senior notes that will mature May 1, 2017. The notes were sold to the public at par. The net proceeds will be used to redeem the 9.6% senior notes assumed in the Magnum Hunter merger which have a face value of $195 million and repay amounts currently outstanding under its revolving credit facility.

Interest is payable May 1 and November 1 of each year. The first interest payment will be made on November 1, 2007, and will consist of interest from closing to that date. The offering is expected to close on May 1, 2007.

J.P. Morgan Securities Inc. and Lehman Brothers Inc. acted as joint book- running managers for the offering. The offering was made only by means of a prospectus.

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