Michael C. Jennings

Mr. Jennings has been a member of the board since January 2019. He has served as Chairman of the Board of Directors of HollyFrontier Corporation since January 2017, a position he previously held from January 2013 until January 2016. Mr. Jennings served as Executive Chairman of HollyFrontier Corporation from January 2016 until his retirement in January 2017. Mr. Jennings served as Chief Executive Officer and President from the merger of Holly Corporation and Frontier Oil Corporation in July 2011 until January 2016. He served as President and Chief Executive Officer of Frontier from 2009 until the merger of Holly and Frontier in July 2011, and served as Executive Vice President and Chief Financial Officer of Frontier from 2005 until 2009. Prior to joining Frontier, Mr. Jennings served as Vice President and Treasurer and held other financial positions at Cameron International (previously Cooper Cameron Corporation) from 2000 to 2005 and from 1995 to 1998. Mr. Jennings brings financial, management and executive leadership expertise to our board of directors from his background in the energy sector.