PART 1: EXHIBIT 11.00 JSB FINANCIAL, INC. AND SUBSIDIARY STATEMENT RE: COMPUTATION OF EARNINGS PER SHARE (Unaudited, In Thousands, except per share amounts) Three Months Ended Nine Months Ended September 30, September 30, ------------------ ----------------- 1999 1998 1999 1998 Basic earnings per share: - ------------------------- Basic weighted average common shares 9,284 9,830 9,319 9,864 Net income $ 7,202 $11,377 $21,574 $34,227 Basic earnings per common share $ 0.78 $ 1.16 $ 2.32 $ 3.47 Diluted earnings per share: - --------------------------- Weighted average common and dilutive potential shares 9,484 10,093 9,520 10,159 Net income $ 7,202 $11,377 $21,574 $34,227 Diluted earnings per common share $ 0.76 $ 1.13 $ 2.27 $ 3.37