EXHIBIT 11 Washington Trust Bancorp, Inc. Computation of Primary and Fully Diluted Earnings Per Share For the Years Ended December 31, 1996, 1995 and 1994 1996 1995 1994 --------------- --------------- --------------- Primary: Weighted average shares 4,326,904 4,249,454 4,224,741 Common stock equivalents 155,935 115,848 83,799 --------------- --------------- --------------- Primary weighted average shares 4,482,839 4,365,302 4,308,540 --------------- --------------- --------------- Fully diluted: Weighted average shares 4,326,904 4,249,454 4,224,741 Common stock equivalents 181,530 158,521 84,421 --------------- --------------- --------------- Fully diluted weighted average shares 4,508,434 4,407,975 4,309,162 --------------- --------------- --------------- Net income $8,425,338 $7,687,967 $6,264,640 --------------- --------------- --------------- Primary earnings per share $1.88 $1.76 $1.45 --------------- --------------- --------------- Fully diluted earnings per share $1.87 $1.74 $1.45 --------------- --------------- ---------------