EXHIBIT 11 PEOPLES BANCORP INC. AND SUBSIDIARIES Computation of Earnings Per Share (dollars in thousands, except per share data) For the Three For the Six Months Ended Months Ended June 30, June 30, 2003 2002 2003 2002 BASIC EARNINGS PER SHARE EARNINGS: Net income $5,439 $4,763 $10,453 $9,456 AVERAGE SHARES OUTSTANDING: Weighted average Common Shares outstanding 9,905,403 7,873,795 9,742,471 7,857,062 - --------------------------------------------------------------------------------------------------------------------------- BASIC EARNINGS PER SHARE $0.55 $0.60 $1.07 $1.20 =========================================================================================================================== DILUTED EARNINGS PER SHARE EARNINGS: Net income $5,439 $4,763 $10,453 $9,456 AVERAGE SHARES OUTSTANDING: Weighted average Common Shares outstanding 9,905,403 7,873,795 9,742,471 7,857,062 Net effect of the assumed exercise of stock options based on the treasury stock method 188,711 228,252 189,167 188,547 - --------------------------------------------------------------------------------------------------------------------------- Total weighted average diluted common shares 10,094,114 8,102,047 9,931,638 8,045,609 - --------------------------------------------------------------------------------------------------------------------------- - --------------------------------------------------------------------------------------------------------------------------- DILUTED EARNINGS PER SHARE $0.54 $0.59 $1.05 $1.18 ===========================================================================================================================