EXHIBIT 11 INVESTORSBANCORP, INC. AND SUBSIDIARIES COMPUTATION OF BASIC AND DILUTED EARNINGS PER SHARE (UNAUDITED) A reconciliation of the income and shares used in computing the basic and diluted earnings per share is as follows: FOR THREE MONTHS ENDED FOR SIX MONTHS ENDED JUNE 30, JUNE 30, ---------------------- ---------------------- 2002 2001 2002 2001 -------- -------- -------- -------- Net income $398,755 $470,928 $800,503 $731,065 ======== ======== ======== ======== Determination of shares: Weighted average common shares outstanding (basic) 940,000 972,081 940,000 989,225 Assumed conversion of stock options 48,821 615 44,793 447 -------- -------- -------- -------- Weighted average common shares outstanding (diluted) 988,821 972,696 984,793 989,672 ======== ======== ======== ======== Basic earnings per common share $ 0.42 $ 0.48 $ 0.85 $ 0.74 ======== ======== ======== ======== Diluted earnings per common share $ 0.40 $ 0.48 $ 0.81 $ 0.74 ======== ======== ======== ======== 22