Exhibit 11 Wintrust Financial Corporation Computation of Net Income Per Common Share (in thousands, except per share data) Nine Months Ended Three Months Ended September 30, September 30, ____________________ _____________________ 1996 1995 1996 1995 ------- ------ ------ ------ Net income (loss)....................... (A) $(1,521) $1,133 $ 301 $ 116 ======= ====== ====== ====== Average common shares outstanding....... 5,992 4,900 6,212 4,940 Average common share equivalents (1)... -- 671 634 725 ------- ------ ------ ------ Weighted average common shares and common share equivalents........... (B) 5,992 5,571 6,846 5,665 ======= ====== ====== ====== Net income (loss) per average common share....................... (A/B) $ (0.25) $ 0.20 $ 0.04 $ 0.02 ======= ====== ====== ====== (1) Common share equivalents result from stock options, stock rights and stock warrants being treated as if they had been exercised and are computed by application of the treasury stock method. No common share equivalents were assumed to be outstanding for the nine-month period ended September 30, 1996 because accounting standards require that the computation of earnings per share shall not give effect to common stock equivalents for any period in which their inclusion would have the effect decreasing the loss per share amount otherwise computed. 25