Attached files

file filename
EX-32.2 - EXHIBIT 32.2 - HollyFrontier Corphfcex32212-31x201910k.htm
EX-31.2 - EXHIBIT 31.2 - HollyFrontier Corphfcex31212-31x201910k.htm
EX-31.1 - EXHIBIT 31.1 - HollyFrontier Corphfcex31112-31x201910k.htm
EX-23.1 - EXHIBIT 23.1 - HollyFrontier Corpexhibit231consentofind.htm
EX-21.1 - EXHIBIT 21.1 - HollyFrontier Corpexhibit211subsidiaries.htm
EX-10.52 - EXHIBIT 10.52 - HollyFrontier Corpexhibit1052-retirement.htm
EX-10.51 - EXHIBIT 10.51 - HollyFrontier Corpexhibit1051-retirement.htm
EX-10.50 - EXHIBIT 10.50 - HollyFrontier Corpexhibit1050-hfcnoticeo.htm
EX-10.49 - EXHIBIT 10.49 - HollyFrontier Corpexhibit1049-hfcrsuawar.htm
EX-10.42 - EXHIBIT 10.42 - HollyFrontier Corpexhibit1042-hfcperform.htm
EX-4.7 - EXHIBIT 4.7 - HollyFrontier Corpexhibit47hfc-item601b4.htm
10-K - 10-K - HollyFrontier Corphfc12-31x201910k.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, 2019 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 20, 2020
 
/s/ Michael C. Jennings
 
 
Michael C. Jennings
 
 
Chief Executive Officer and President