Sec Form 4 Filing - COORS PETER H @ MOLSON COORS BREWING CO - 2018-01-16

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 COORS PETER H 2. Issuer Name and Ticker or Trading Symbol MOLSON COORS BREWING CO [ TAP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner X __ Officer (give title below) X __ Other (specify below) Chief Customer Relations Off/Chairman of the Board (Last) (First) (Middle) 1801 CALIFORNIA STREET, SUITE 4600 3. Date of Earliest Transaction (MM/DD/YY) 01/16/2018 (Street) DENVER, CO80202 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 Class B Common Stock 01/16/2018 M( 1 ) 5,739 A $ 42.02 319,222 D Class B Common Stock 01/16/2018 S( 2 ) 4,118 D $ 85.007 ( 2 ) 315,104 D Class B Common Stock 01/17/2018 M( 1 ) 71,781 A $ 42.02 386,885 D Class B Common Stock 01/17/2018 S( 3 ) 51,485 D $ 85.0123 ( 3 ) 335,400 D Class B Common Stock 48,116 I by Marilyn E & Peter H Coors as Co-Trustees of Peter H Coors 2013 Grantor Retained Annuity Trust XVI Class B Common Stock 38,679 I by Marilyn E & Peter H Coors, Co-Trustees of Peter H Coors 2014 Grantor Retained Annuity Trust XVII Class B Common Stock 56,507 I by Marilyn E & Peter H Coors, Co-Trustees of Peter H Coors 2014 Grantor Retained Annuity Trust XIX Class B Common Stock 12,151 I by Marilyn E & Peter H Coors, Co-Trustees of Peter H Coors 2015 Grantor Retained Annuity Trust XX Class B Common Stock 56,400 I by Marilyn E & Peter H Coors, Co-Trustees of Peter H Coors 2015 Grantor Retained Annuity Trust XXI Class B Common Stock 153,864 I by Marilyn E & Peter H Coors, Co-Trustees of Peter H Coors 2016 Grantor Retained Annuity Trust XXII Class B Common Stock 85,081 I by Marilyn E & Peter H Coors, Co-Trustees of Peter H Coors 2013 Grantor Retained Annuity Trust XV Class B Common Stock 5,795 I by Marilyn E & Peter H Coors as Co-Trustees of Peter H Coors 2013 Grantor Retained Annuity Trust XIV Class B Common Stock 13,536,806 I by Adolph Coors Company LLC Class B Common Stock 1,064 I by Spouse

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) $ 42.02 01/16/2018 M 5,739 ( 4 ) 05/14/2019 Class B Common Stock 5,739 $ 0 71,781 D Employee Stock Option (Right to Buy) $ 42.02 01/17/2018 M 71,781 ( 4 ) 05/14/2019 Class B Common Stock 71,781 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other COORS PETER H 1801 CALIFORNIA STREET, SUITE 4600 DENVER, CO80202 X X Chief Customer Relations Off Chairman of the Board Signatures Kathleen M. Kirchner, Power of Attorney 01/18/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The transactions 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. ( 2 )Represents shares sold in a broker-assisted cashless exercise to cover the exercise price and tax withholding obligations. The price reported represents the weighted average sales price of Class B common stock sold in multiple transactions at prices ranging from $85.00 to $85.08, inclusive. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. ( 3 )Represents shares sold in a broker-assisted cashless exercise to cover the exercise price and tax withholding obligations. The price reported represents the weighted average sales price of Class B common stock sold in multiple transactions at prices ranging from $85.00 to $85.05, inclusive. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. ( 4 )The stock options vest and become exercisable in three equal annual installments beginning on May 14, 2010.

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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