EXHIBIT 11 Greater Bay Bancorp Form 10-Q Exhibit 11 - Statements Re Computation of Earnings Per Share Three Months Ended June 30, Six Months Ended June 30, (Dollars and shares in thousands, except per share amounts) 1998 1997 1998 1997 - ------------------------------------------------------------------------------------------ -------------------------- Basic Earnings Per Share: Income available to common shareholders $ 2,923 $ 3,011 $ 6,628 $ 5,815 Weighted average common shares outstanding 9,163,934 8,895,548 9,106,015 8,923,764 -------------------------- -------------------------- Basic earnings per share $ 0.32 $ 0.34 $ 0.73 $ 0.65 ========================== ========================== Diluted Earnings Per Share: Income available to common shareholders $ 2,923 $ 3,011 $ 6,628 $ 5,815 Weighted average common shares outstanding 9,163,934 8,895,548 9,106,015 8,923,764 Effect of dilutive securities 793,774 589,124 818,143 670,715 -------------------------- -------------------------- Weighted average common and common equivalent shares outstanding 9,956,505 9,484,672 9,924,158 9,594,479 -------------------------- -------------------------- Diluted earnings per share $ 0.29 $ 0.32 $ 0.67 $ 0.61 ========================== ==========================