Sec Form 4 Filing - Holding Carol Orme @ HF Sinclair Corp - 2024-02-08

FORM 4 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 Holding Carol Orme 2. Issuer Name and Ticker or Trading Symbol HF Sinclair Corp [ DINO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O REH COMPANY, 2800 WEST LINCOLNWAY 3. Date of Earliest Transaction (MM/DD/YY) 02/08/2024 (Street) CHEYENNE, WY82009 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ 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 02/08/2024 D( 1 ) 1,061,946 D $ 56.5 26,406,134 I By REH Company ( 2 )

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 Holding Carol Orme C/O REH COMPANY 2800 WEST LINCOLNWAY CHEYENNE, WY82009 X X REH Co 2800 WEST LINCOLNWAY CHEYENNE, WY82009 X X Signatures REH COMPANY, By: /s/ Ross B. Matthews, Name: Ross B. Matthews, Title: Chief Operating Officer 02/12/2024 Signature of Reporting Person Date /s/ Carol Orme Holding, Name: Carol Orme Holding 02/12/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )These shares were sold by REH Company (f/k/a The Sinclair Companies) ("REH") to the Issuer in a private transaction pursuant to the Stock Purchase Agreement between REH and the Issuer dated February 8, 2024. ( 2 )These shares are owned directly by REH and not Mrs. Holding. REH is the primary and direct beneficial owner of the shares indicated above, and the board of directors of REH has all voting and investment power with respect to such shares. As a result of her relationship with REH, Mrs. Holding may be deemed to beneficially own the 26,406,134 shares under applicable securities law and Securities and Exchange Commission guidance. Mrs. Holding, however, does not intend ever to own such shares directly for investment purposes in the future and expressly disclaims such beneficial ownership, and all pecuniary interest except to the extent of her economic interest in REH, to the maximum extent permitted by law.

Remarks: Ross B. Matthews and Norman J. Szydlowski currently serve as REH's representatives on the Issuer's board of directors, and therefore REH and Mrs. Holding each constitute a "director by deputization" of the Issuer.

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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