Attached files
| file | filename |
|---|---|
| EX-10.58 - EXHIBIT 10.58 - HollyFrontier Corp | exhibit1058-hfcrsuawardagr.htm |
| EX-31.1 - EXHIBIT 31.1 - HollyFrontier Corp | hfcex31112-31x201710k.htm |
| 10-K - 10-K - HollyFrontier Corp | hfc12-31x201710k.htm |
| EX-32.2 - EXHIBIT 32.2 - HollyFrontier Corp | hfcex32212-31x201710k.htm |
| EX-31.2 - EXHIBIT 31.2 - HollyFrontier Corp | hfcex31212-31x201710k.htm |
| EX-23.1 - EXHIBIT 23.1 - HollyFrontier Corp | exhibit231consent.htm |
| EX-21.1 - EXHIBIT 21.1 - HollyFrontier Corp | exhibit211subsidiariesofre.htm |
| EX-10.59 - EXHIBIT 10.59 - HollyFrontier Corp | exhibit1059-hfcnoticeofgra.htm |
| EX-10.53 - EXHIBIT 10.53 - HollyFrontier Corp | exhibit1053-hfcperformance.htm |
| EX-10.52 - EXHIBIT 10.52 - HollyFrontier Corp | exhibit1052-hfcperformance.htm |
| EX-10.11 - EXHIBIT 10.11 - HollyFrontier Corp | exhibit1011-omnibusagreeme.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 period ending December 31, 2017 and filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, George J. Damaris, 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 21, 2018 | /s/ George J. Damiris | |
George J. Damiris | ||
Chief Executive Officer and President | ||