Sec Form 4/A Filing - WALKER SAMUEL D @ MOLSON COORS BREWING CO - 2013-05-01

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 WALKER SAMUEL D 2. Issuer Name and Ticker or Trading Symbol MOLSON COORS BREWING CO [ TAP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) GloblChiefLegal/PeopleOfficr (Last) (First) (Middle) 1225 17TH STREET, SUITE 3200 3. Date of Earliest Transaction (MM/DD/YY) 05/01/2013 (Street) DENVER, CO80202 4. If Amendment, Date Original Filed (MM/DD/YY) 05/03/2013 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 Class B Common Stock 05/01/2013 M( 1 ) 20,000 A $ 32.66 84,050 D Class B Common Stock 05/01/2013 S( 2 ) 20,000 D $ 51.3855 64,050 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 Employee Stock Option (Right to Buy) $ 32.66 05/01/2013 M 20,000 ( 3 ) 02/12/2014 Class B Common Stock 20,000 $ 0 0 D Employee Stock Option (Right to Buy) $ 37.18 ( 4 ) 03/15/2015 Class B Common Stock 20,000 20,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other WALKER SAMUEL D 1225 17TH STREET SUITE 3200 DENVER, CO80202 GloblChiefLegal/PeopleOfficr Signatures /s/ Samuel D. Walker 10/24/2013 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This report corrects transactions with respect to one of the two options exercised by the reporting person on May 1, 2013, pursuant to a 10b5-1 Trading Plan. The Form 4 filed on May 3, 2013 mistakenly reported the cashless exercise of 20,000 options granted on March 15, 2005. The cashless exercise was in fact effected with respect to 20,000 options granted on February 12, 2004. ( 2 )The option exercise and sale reported in this Form 4 were effected pursuant to a Rule 10b5-1 Trading Plan previously adopted by the reporting person in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934. ( 3 )The options were granted on February 12, 2004 and vested in equal annual installments over a three year period. ( 4 )The options were granted on March 15, 2005 and vested in equal annual installments over a three year period.

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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