Chesapeake Energy Corp. is an independent exploration and production company, which engages in acquisition, exploration and development of properties for the production of oil, natural gas and natural gas liquids from underground reservoirs. It focuses on projects located in Louisiana, Ohio, Oklahoma, Pennsylvania, Texas, and Wyoming. The company was founded by Aubrey K. McClendon and Tom L. Ward on May 18, 1989 and is headquartered in Oklahoma City, OK.