HollyFrontier names COO

HollyFrontier Corp., Dallas, has hired Timothy Go as executive vice-president and chief operating officer, effective July 2020.

Go brings more than 30 years of operating experience serving in executive-level roles at companies in the petroleum refining and specialty chemicals markets. He currently serves as chief executive officer of the general partner of Calumet Specialty Products Partners LP, a position he has held since January 2016. Prior to Calumet, Go served as vice-president, operations of Flint Hills Resources LP, a wholly owned subsidiary of Koch Industries Inc., from July 2012 through September 2015. Prior to joining Koch Industries, Go held various roles in downstream operations during his 18 years at ExxonMobil Corp.