R. Madison Murphy has served as Chairman of the Board of Murphy USA Inc. since its 2013 spin-off from Murphy Oil Corporation, where he has been a director since 1993 and serves on the Executive Committee and as Chair of the Audit Committee. He was Chairman of the Board of Directors of Murphy Oil from 1994 to 2002 and Chief Financial Officer of Murphy Oil from 1992 to 1994. Mr. Murphy has served on the Board of Directors of Deltic Timber Corporation since December 17, 1996.