X0305 4 2012-05-11 0001062449 BUFFALO WILD WINGS INC BWLD 0001512364 Patterson Lee R. 5500 WAYZATA BLVD. SUITE 1600 MINNEAPOLIS MN 55416 1 Sr. VP, Information Technology Common Stock 2012-05-11 4 S 0 2000 85.83 D 2290 D Reflects the weighted average price of 2,000 shares of common stock of Buffalo Wild Wings, Inc. sold by the reporting person in multiple transactions on May 11, 2012 with sale prices ranging from $85.74 to $85.94 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Exhibit List 24-Power of Attorney /s/ Julie Regnier, as Attorney-in-Fact for Lee R. Patterson 2012-06-04