EXHIBIT 11 Washington Trust Bancorp, Inc. Computation of Per Share Earnings For the Periods Ended June 30, 2002 and 2001 Three months ended June 30, 2002 2001 - ---------------------------------------------------- ------------------------------------------------------------- (In thousands, except per share amounts) Basic Diluted Basic Diluted ------------------------------------------------------------- Net income $4,024 $4,024 $3,800 $3,800 Share amounts: Average outstanding 12,858.7 12,858.7 12,031.3 12,031.3 Common stock equivalents - 206.4 - 206.5 - ------------------------------------------------ ------------------------------------------------------------- Weighted average outstanding 12,858.7 13,065.1 12,031.3 12,237.8 - ------------------------------------------------ ------------------------------------------------------------- Earnings per share $.31 $.31 $.32 $.31 - ------------------------------------------------ ------------------------------------------------------------- Six months ended June 30, 2002 2001 - ---------------------------------------------------- ------------------------------------------------------------- (In thousands, except per share amounts) Basic Diluted Basic Diluted ------------------------------------------------------------- Net income $7,768 $7,768 $3,954 $3,954 Share amounts: Average outstanding 12,434.1 12,434.1 12,021.8 12,021.8 Common stock equivalents - 188.3 - 147.5 - ------------------------------------------------ ------------------------------------------------------------- Weighted average outstanding 12,434.1 12,622.4 12,021.8 12,169.3 - ------------------------------------------------ ------------------------------------------------------------- Earnings per share $.62 $.62 $.33 $.32 - ------------------------------------------------ -------------------------------------------------------------