Washington Bancorp Computation of Earnings per Common Share Exhibit 11 For the three months For the six months ended December 31, ended December 31, 1998 1997 1998 1997 1998 1997 1998 1997 Basic Basic Diluted Diluted Basic Basic Diluted Diluted Computation of weighted average EPS EPS EPS EPS EPS EPS EPS EPS 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 Unreleased common shares held by the Employee Stock Ownership Plan (ESOP) at the beginning of the period ......................... (41,270) (45,367) (41,270) (45,367) (42,313) (46,333) (42,313) (46,333) Weighted average common shares released by the ESOP during the period ............................ 522 483 522 483 1,044 966 1,044 966 Weighted average common shares outstanding - Stock Option Plan .................................. -- -- 15,823 17,779 -- -- 16,517 16,838 Weighted average common shares into treasury ......................... (53,127) -- (53,127) -- (44,269) -- (44,269) -- --------------------------------------------------------------------------------- Total average shares outstanding ............. 557,258 606,249 573,081 624,028 565,595 605,766 582,112 622,604 ================================================================================ Net income ................................... $172,425 $199,230 172,425 199,230 367,588 356,450 $367,588 $356,450 ================================================================================= Net income per share ......................... $ 0.31 $ 0.33 $ 0.30 $ 0.32 $ 0.65 $ 0.59 $ 0.63 $ 0.57 =================================================================================