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 OF SECURITIES
                                                                                  
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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(f) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Cooper Ross D 		2. Issuer Name and Ticker or Trading Symbol

BEACON ROOFING SUPPLY INC [ BECN ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Sr. Vice President, General Co
(Last)          (First)          (Middle)

5244 RIVER ROAD;, SECOND FLOOR 		3. Date of Earliest Transaction (MM/DD/YYYY)

3/13/2012
(Street)

BETHESDA, MD 20816
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
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. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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, $.01 par value   3/13/2012     M    518   A $12.25   7768   D    
Common Stock, $.01 par value   3/13/2012     M    10000   A $14.45   17768   D    
Common Stock, $.01 par value   3/13/2012     M    1549   A $15.47   19317   D    
Common Stock, $.01 par value   3/13/2012     S    518   (1) D $25   18799   D    
Common Stock, $.01 par value   3/13/2012     S    10000   (1) D $25   8799   D    
Common Stock, $.01 par value   3/13/2012     S    1549   (1) D $25   7250   D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 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 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
Stock Option (right to buy)   $12.25   3/13/2012     M         518    10/22/2009   (2) 10/22/2018   Common Stock, $.01 par value   518   $ 0   0   D    
Stock Option (right to buy)   $14.45   3/13/2012     M         10000    11/6/2010   (2) 11/6/2019   Common Stock, $.01 par value   10000   $ 0   5000   D    
Stock Option (right to buy)   $15.47   3/13/2012     M         1549    11/16/2011   (2) 11/16/2020   Common Stock, $.01 par value   1549   $ 0   3098   D    

Explanation of Responses:
( 1)  This sale was made pursuant to a 10b-5-1 plan.
( 2)  Option grant vested/vests in one-third increments over a three-year period following the grant date.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Cooper Ross D
5244 RIVER ROAD;
SECOND FLOOR
BETHESDA, MD 20816

Sr. Vice President, General Co

Signatures
Ross D. Cooper 3/15/2012
** 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).
** 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 control number.
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