X0303 4 2010-11-05 0 0001062449 BUFFALO WILD WINGS INC BWLD 0001265912 TWINEM MARY J 5500 WAYZATA BLVD. SUITE 1600 MINNEAPOLIS MN 55416 0 1 0 0 Executive VP, CFO & Treasurer Common Stock 2010-11-05 4 S 0 2000 48.7545 D 65271 D Sales effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 19, 2009. The sales reported on this Form 4 conclude the transactions contemplated by the Rule 10b5-1 trading plan. 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 November 5, 2010 with sale prices ranging from $48.65 to $48.85 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. 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. /s/ Erik J. Romslo, as Attorney-in-Fact for Mary J. Twinem 2010-11-08