SEC FORM 4/A

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

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

1. Name and Address of Reporting Person^*

Hobson Christopher

(Last)

(First)

(Middle)

395 OYSTER POINT BLVD., SUITE 415

(Street)

SOUTH SAN FRANCISCO

94080

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
Core-Mark Holding Company, Inc. [ CORE ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	SVP of Sales & Marketing

3. Date of Earliest Transaction (Month/Day/Year)
05/13/2013

4. If Amendment, Date of Original Filed (Month/Day/Year)
02/05/2015

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Coremark Common Stock	05/13/2013		S		1,400	D	$56.2235	22,572⁽¹⁾	D
Coremark Common Stock	08/11/2014		S		2,549	D	$49.6	26,121⁽²⁾	D
Coremark Common Stock	08/15/2014		S		886	D	$49.6	25,235⁽³⁾	D
Coremark Common Stock	08/18/2014		S		1,565	D	$49.6	23,670⁽⁴⁾	D
Coremark Common Stock	09/02/2014		S		3,670	D	$49.1	20,000⁽⁵⁾	D
Coremark Common Stock	09/08/2014		S		5,000	D	$51.5605	15,000⁽⁶⁾	D
Coremark Common Stock	02/03/2015		M		2,166	A	$0.01	33,048	D
Coremark Common Stock	02/03/2015		F		815⁽⁷⁾	D	$68.11	32,233	D
Coremark Common Stock	02/03/2015		F		1,556⁽⁸⁾	D	$68.11	30,677	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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
2010 LTIP RSU GRANT 2014	$0.01	02/03/2015		M			2,166	02/03/2015	02/03/2021	Coremark Common stock	2,166	$0	4,334	D

Explanation of Responses:

1. This transaction has not previously been reported. The transaction was made prior to Coremark's 2 for 1 stock split and is reflected here on a post-split basis. All transactions reported after 05/15/2013 should have reflected this reduction in shares.

2. This transaction was not previously reported. All transactions reported after 08/11/2015 should have reflected this reduction in shares.

3. This transaction was not previously reported. All transactions reported after 08/15/2015 should have reflected this reduction in shares.

4. This transaction was not previously reported. All transactions reported after 08/18/2015 should have reflected this reduction in shares.

5. This transaction was not previously reported. All transactions reported after 09/02/2015 should have reflected this reduction in shares.

6. This transaction was not previously reported. All transactions reported after 09/08/2015 should have reflected this reduction in shares.

7. Shares withheld for taxes on RSU Vesting

8. Shares withheld for taxes on Performance RSU Vesting previously reported in Table I

	Chris Miller, POA	03/20/2015
	** Signature of Reporting Person	Date
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).
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