SC 13G 1 becn.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.F. 20549 SCHEDULE 13G BECON ROOFING SUPPLY INC. Common Stock 0736851 Item 1. a. Beacon Roofing Supply, Inc. b. One Lakeland Park Drive Peabody, MA 01960 Item 2. a. D.F. Dent & Company, Inc. b. 2 East Read Street, 6th Floor Baltimore, Maryland 21202 c. Incorporated in the State of Maryland d. Common stock e. 0736851 Item 3. Investment adviser registered under section 203 of the Investment Advisers Act of 1940 Item 4. a. 2,457,788 b. 5.37% c. 1. 2,457,788 2. 0 3. 2,457,788 4. Item 5. N/A Item 6. N/A Item 7. N/A Item 8. N/A Item 9. N/A