<ARTICLE> 9 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM GREATER BAY BANCORP FORM 10-Q AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-START> JAN-01-1999 <PERIOD-END> MAR-31-1999 <CASH> 68,185 <INT-BEARING-DEPOSITS> 0 <FED-FUNDS-SOLD> 90,400 <TRADING-ASSETS> 0 <INVESTMENTS-HELD-FOR-SALE> 262,954 <INVESTMENTS-CARRYING> 84,859 <INVESTMENTS-MARKET> 84,793 <LOANS> 1,144,549 <ALLOWANCE> (21,915) <TOTAL-ASSETS> 1,781,296 <DEPOSITS> 1,539,077 <SHORT-TERM> 0 <LIABILITIES-OTHER> 93,962 <LONG-TERM> 50,000 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 58,496 <OTHER-SE> 39,761 <TOTAL-LIABILITIES-AND-EQUITY> 1,781,296 <INTEREST-LOAN> 24,670 <INTEREST-INVEST> 5,130 <INTEREST-OTHER> 1,541 <INTEREST-TOTAL> 31,341 <INTEREST-DEPOSIT> 10,892 <INTEREST-EXPENSE> 12,981 <INTEREST-INCOME-NET> 18,360 <LOAN-LOSSES> 861 <SECURITIES-GAINS> 0 <EXPENSE-OTHER> 11,035 <INCOME-PRETAX> 8,398 <INCOME-PRE-EXTRAORDINARY> 5,146 <EXTRAORDINARY> (88) <CHANGES> 0 <NET-INCOME> 5,058 <EPS-PRIMARY> 0.52 <EPS-DILUTED> 0.49 <YIELD-ACTUAL> 4.83 <LOANS-NON> 2,847 <LOANS-PAST> 0 <LOANS-TROUBLED> 482 <LOANS-PROBLEM> 0 <ALLOWANCE-OPEN> 21,304 <CHARGE-OFFS> (263) <RECOVERIES> 13 <ALLOWANCE-CLOSE> 21,915 <ALLOWANCE-DOMESTIC> 21,915 <ALLOWANCE-FOREIGN> 0 <ALLOWANCE-UNALLOCATED> 0