X0306 4 2013-05-07 0001062449 BUFFALO WILD WINGS INC BWLD 0001265912 TWINEM MARY J 5500 WAYZATA BLVD. SUITE 1600 MINNEAPOLIS MN 55416 1 Exec VP, CFO & Treasurer Common Stock 2013-05-07 4 S 0 1000 92.70 D 55559 D Sale effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 12, 2012. Includes 159 shares acquired on May 1, 2013 under the Company's employee stock purchase plan. Included in this amount are 10,482 shares of common stock issuable in settlement of performance restricted stock units, the receipt of which the reporting person has elected to defer, and 2,808 restricted stock units which will vest in their entirety on March 12, 2015 and be settled at that time on a one for one basis in shares of the Company's common stock. /s/ Julie M. Regnier, Attorney-in-Fact for Mary J. Twinem 2013-05-09