Attached files

file filename
EX-32.2 - EX-32.2 - HollyFrontier Corphfcex32212-31x202010k.htm
EX-31.2 - EX-31.2 - HollyFrontier Corphfcex31212-31x202010k.htm
EX-31.1 - EX-31.1 - HollyFrontier Corphfcex31112-31x202010k.htm
EX-23.1 - EX-23.1 - HollyFrontier Corpex231-consent.htm
EX-21.1 - EX-21.1 - HollyFrontier Corpexhibit211subsidiariesofre.htm
EX-10.50 - EX-10.50 - HollyFrontier Corpexhibit1050-2021xhfcnotice.htm
EX-10.49 - EX-10.49 - HollyFrontier Corpexhibit1049-2021xhfcrsuawa.htm
EX-10.43 - EX-10.43 - HollyFrontier Corpexhibit1043-2021xhfcdirect.htm
EX-10.42 - EX-10.42 - HollyFrontier Corpexhibit1042-2021xhfcdirect.htm
EX-10.41 - EX-10.41 - HollyFrontier Corpexhibit1041-2021xhfcperfor.htm
EX-4.5 - EX-4.5 - HollyFrontier Corpexhibit45_descriptionofcap.htm
EX-3.2 - EX-3.2 - HollyFrontier Corpexhibit32hfcamendedandrest.htm
10-K - 10-K - HollyFrontier Corphfc-20201231.htm

Exhibit 32.1
CERTIFICATION OF CHIEF EXECUTIVE
OFFICER UNDER SECTION 906 OF THE
SARBANES OXLEY ACT OF 2002, 18 U.S.C. § 1350


In connection with the accompanying report on Form 10-K for the annual period ending December 31, 2020 and filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Michael C. Jennings, Chief Executive Officer of HollyFrontier Corporation (the “Company”) hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:
1.The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and
2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.


Date: February 24, 2021/s/ Michael C. Jennings
 Michael C. Jennings
 Chief Executive Officer and President