Attached files

file filename
10-Q - 10-Q - HollyFrontier Corphfc-20200930.htm
EX-32.2 - EX-32.2 - HollyFrontier Corphfcex3229-30x2020.htm
EX-31.2 - EX-31.2 - HollyFrontier Corphfcex3129-30x2020.htm
EX-31.1 - EX-31.1 - HollyFrontier Corphfcex3119-30x2020.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-Q for the quarterly period ended September 30, 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:
1.The Report fully complies with the requirements of Section 13(a) or 15(d) 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: November 5, 2020/s/ Michael C. Jennings
 Michael C. Jennings
 Chief Executive Officer and President