Mr. Kenner has been our Senior Vice President, Operations since January 2021. From July 2017 to December 2020, Mr. Kenner served as our Senior Vice President, Chemical Manufacturing and, from July 2008 to July 2017, he served as our Vice President, Manufacturing. Mr. Kenner joined us after a 19-year career at Valero Energy Corporation where he served as Vice President and General Manager of Valero's Delaware City Refinery and its Houston Refinery, as well as other leadership positions in Valero's refining system. Mr. Kenner received a B.S. in Aerospace Engineering from Texas A&M University and a M.S. in Chemical Engineering from the University of Texas at Austin.

Andrew Kenner