The Board of Directors of Cimarex Energy Co. announced the appointment of Lisa A. Stewart as an independent director of Cimarex effective October 30, 2015. Ms. Stewart will be a member of the Audit Committee.

Ms. Stewart is Chairman and Chief Investment Officer of Sheridan Production Partners. Ms. Stewart served as a director at Talisman Energy Inc. from 2009 until its acquisition in May 2015, including as the Chair of the Reserves Committee and a member of the Human Resources Committee.