Sec Form 4 Filing - Brandon Brian @ Core-Mark Holding Company, LLC - 2021-09-01

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

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person Brandon Brian 2. Issuer Name and Ticker or Trading Symbol Core-Mark Holding Company, LLC [ CORE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) EVP, Chief IT Officer (Last) (First) (Middle) 1500 SOLANA BLVD, SUITE 3400 3. Date of Earliest Transaction (MM/DD/YY) 09/01/2021 (Street) WESTLAKE, TX76262 4. If Amendment, Date Original Filed (MM/DD/YY) 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 Coremark Common Stock 09/01/2021 D 6,524 D 0 D Coremark Common Stock 09/01/2021 D 300 D 0 I Spousal RRSP

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 2019 Performance Shares ( 2 ) 09/01/2021 D 943 ( 2 ) ( 2 ) Coremark Common Stock 943 ( 2 ) 0 D 2021 Performance Shares ( 2 ) 09/01/2021 D 12,227 ( 2 ) ( 2 ) Coremark Common Stock 12,227 ( 2 ) 0 D 2019 RSU Grant ( 3 ) 09/01/2021 D 3,144 ( 3 ) ( 3 ) Coremark Common Stock 3,144 ( 3 ) 0 D 2020 RSU Grant ( 3 ) 09/01/2021 D 8,214 ( 3 ) ( 3 ) Coremark Common Stock 8,214 ( 3 ) 0 D 2021 RSU Grant ( 3 ) 09/01/2021 D 8,151 ( 3 ) ( 3 ) Coremark Common Stock 8,151 ( 3 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Brandon Brian 1500 SOLANA BLVD, SUITE 3400 WESTLAKE, TX76262 EVP, Chief IT Officer Signatures Chris Miller, POA 09/01/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Converted pursuant to the Agreement and Plan of Merger (the "Merger Agreement") between Core-Mark Holding Company, Inc. ("CORE") and Performance Food Group Company ("PFGC") into $23.875 in cash and 0.44 shares of PFGC for each share of CORE. ( 2 )Converted pursuant to the Merger Agreement into restricted stock units of PFGC based on the performance target levels previously determined by the Board and the Equity Award Exchange Ratio as set forth in the Merger Agreement. ( 3 )Converted pursuant to the Merger Agreement into a number of restricted stock units of PFGC based on the Equity Award Exchange Ratio as set forth in the Merger Agreement.

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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.