Washington Bancorp Computation of Earnings per Common Share Exhibit 11 For Three Months For Three Months Ended March 31, Ended March 31, ------------------ ----------------- 2000 1999 2000 1999 2000 1999 2000 1999 Basic Basic Diluted Diluted Basic Basic Diluted Diluted EPS ESP EPS EPS EPS EPS EPS EPS ----------------------------------------------------------------------------------- Computation of weighted average number of common shares outstanding: Common shares outstanding at the beginning of the period 651,133 651,133 651,133 651,133 651,133 651,133 651,133 651,133 Unleased common shares held by the Employee Stock Ownership Plan (ESOP) at the beginning of the period (35,718) (40,226) (35,718) (40,226) (37,972) (42,313) (37,972) (42,313) Weighted average common shares released by the ESOP during the period 609 564 609 564 1,736 1,607 1,736 1,607 Weighted average common shares out- standing - Stock Option Plan - - - - 6,786 13,853 - - - - 9,179 14,927 Weighted average common shares into treasury (74,261) (51,398) (74,261) (51,398) (60,182) (46,610) (60,182) (46,610) ----------------------------------------------------------------------------------- Total average shares outstanding 541,763 560,073 548,549 573,926 554,715 563,817 563,894 578,744 =================================================================================== Net income $285,278 $153,149 $285,278 $153,149 $786,554 $520,727 $786,554 $520,737 =================================================================================== Net income per share $ 0.53 $ 0.27 $ 0.52 $ 0.27 $ 1.42 $ 0.92 $ 1.39 $ 0.90 ===================================================================================