Greater Bay Bancorp Form 10-Q Exhibit 11 -- Statements Re Computation of Earnings Per Share Three Months Ended September 30, Nine Months Ended September 30, (Dollars and shares in thousands, except per share 1999 1998 1999 1998 amounts) - --------------------------------------------------------------------------- ------------------- Basic Earnings Per Share: Income available to common shareholders $ 7,367 $ 5,015 $ 17,033 $ 13,315 Weighted average common shares outstanding 11,285,000 10,924,000 11,189,000 10,848,000 ---------------------------------------------- ------------ Basic earnings per share $ 0.65 $ 0.46 $ 1.52 $ 1.23 ============================================== ============= Diluted Earnings Per Share: Income available to common shareholders $ 7,367 $ 5,015 $ 17,033 $ 13,315 Weighted average common shares outstanding 11,285,000 10,924,000 11,189,000 10,848,000 Effect of dilutive securities 626,000 698,000 621,000 801,000 ---------------------------------------------- ----------- Weighted average common and common equivalent shares outstanding 11,911,000 11,622,000 11,810,000 11,649,000 ---------------------------------------------- ----------- Diluted earnings per share $ 0.62 $ 0.43 $ 1.44 $ 1.14 ============================================== ============