Michael C. Jennings

Mr. Jennings has served as Chief Executive Officer since January 2020. He served as President from January 2020 until November 2021, as Executive Vice President from November 2019 through December 2019, as Executive Chairman from January 2016 until January 2017 and as the Chief Executive Officer and President from the merger of Holly Corporation (“Holly”) and Frontier Oil Corporation (“Frontier”) in July 2011 until January 2016. He served as Chairman of the Board from January 2017 to February 2019 and January 2013 to January 2016. Mr. Jennings has served as Chief Executive Officer of Holly Logistic Services, L.L.C. (“HLS”), the general partner of the general partner of Holly Energy Partners, L.P., since January 2020. He previously served as Chief Executive Officer of HLS from January 2014 to November 2016 and as President of HLS from October 2015 to February 2016. Mr. Jennings previously served as President and Chief Executive Officer of Frontier from 2009 until the merger of Holly and Frontier in July 2011 and as the Executive Vice President and Chief Financial Officer of Frontier from 2005 until 2009.

Mr. Jennings currently serves as a director and Chairman of the Board of HLS, the general partner of the general partner of HEP. Mr. Jennings served as a director of FTS International, Inc. from January 2019 to November 2020 and as a director of ION Geophysical Corporation from December 2010 until February 2019. He served as Chairman of the board of directors of Frontier from 2010 until the merger in July 2011 and served as a director of Frontier from 2008 to July 2011.