George Damiris has been promoted to president and CEO of Dallas, TX-based HollyFrontier Corp. (NYSE:HFC). Damiris has been executive vice president and COO since September 2014. The promotion will be effective January 1, 2016, and he has been appointed to the company's board of directors effective December 7, 2015. Prior to joining HollyFrontier, Damiris progressed through numerous positions in the refining and petrochemical industries at British Petroleum and Koch Industries affiliates. He holds both a BS in Chemical Engineering and an MBA from Case Western Reserve University.
Michael Jennings will assume the position of executive chairman of HollyFrontier Corp. on January 1, 2016 and will continue as CEO and president of Holly Energy Partners (NYSE: HEP). Jennings has served as CEO of HollyFrontier since July 2011 and prior to that was chairman and CEO of Frontier Oil Corp. He has served as the CEO of HEP since January 2014 and as the president of HEP since October 2015.