Timothy Go

Timothy Go has served as President and Chief Operating Officer since November 2021. He previously served as Executive Vice President and Chief Operating Officer from June 2020 to November 2021. Prior to joining the Company, he served as Chief Executive Officer of the general partner of Calumet Specialty Products Partners, L.P. from January 2016 to April 2020 and retired from Calumet in June 2020. Prior to joining Calumet, Mr. Go served as Vice President, Operations of Flint Hills Resources, LP, a wholly-owned subsidiary of Koch Industries, Inc., from July 2012 through September 20I5, and as Vice President, Operations Excellence of Flint Hills Resources, LP from June 2011 to July 2013. Mr. Go served as Managing Director, Operations Excellence from August 2008 to June 2011 of Koch Industries, Inc. Prior to joining Koch Industries, Mr. Go held various roles of increasing responsibility in downstream operations during his 18 years at ExxonMobil Corporation.