Sec Form 4/A Filing - Jennings Michael @ HollyFrontier Corp - 2016-12-15

FORM 4/A Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Jennings Michael 2. Issuer Name and Ticker or Trading Symbol HollyFrontier Corp [ HFC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Executive Chairman (Last) (First) (Middle) 2828 N. HARWOOD, SUITE 1300 3. Date of Earliest Transaction (MM/DD/YY) 12/15/2016 (Street) DALLAS, TX75201 4. If Amendment, Date Original Filed (MM/DD/YY) 12/19/2016 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common stock 12/15/2016 F 33,062 ( 1 ) D $ 31.76 69,256 ( 1 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Jennings Michael 2828 N. HARWOOD, SUITE 1300 DALLAS, TX75201 X Executive Chairman Signatures /s/ Vaishali S. Bhatia, Attorney-In-Fact 12/19/2016 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Mr. Jennings's Form 4 previously incorrectly reported that 36,733 common shares of the Issuer were surrendered to satisfy his tax liability incident to the vesting of restricted shares previously reported. The number of common shares surrendered was actually 33,062, which is 3,671 common shares less than the number that was incorrectly reported on the Form 4 filed on behalf of Mr. Jennings on December 19, 2016. As a result of this reporting error, the Form 4 filed on behalf of Mr. Jennings on December 19, 2016 understated by 3,671 common shares the total number of common shares held by Mr. Jennings.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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