<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM (A) THE SIEBEL SYSTEMS, INC. FINANCIAL STATEMENTS AT DECEMBER 31, 1995 AND FOR THE YEAR THEN ENDED AND AT MARCH 31, 1996 AND FOR THE 3 MONTHS ENDED AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH (B) FINANCIAL STATEMENTS INCLUDED IN THE SIEBEL SYSTEMS, INC. REGISTRATION STATEMENT ON FORM S-1. </LEGEND> <MULTIPLIER> 1000 <CURRENCY> U.S. DOLLARS <PERIOD-TYPE> YEAR 3-MOS <FISCAL-YEAR-END> DEC-31-1995 DEC-31-1996 <PERIOD-START> JAN-01-1995 JAN-01-1996 <PERIOD-END> DEC-31-1995 MAR-31-1996 <EXCHANGE-RATE> 1 1 <CASH> 11,391 9,757 <SECURITIES> 0 0 <RECEIVABLES> 3,066 3,112 <ALLOWANCES> 0 0 <INVENTORY> 0 0 <CURRENT-ASSETS> 15,211 13,581 <PP&E> 1,086 2,354 <DEPRECIATION> 223 348 <TOTAL-ASSETS> 16,091 15,609 <CURRENT-LIABILITIES> 6,129 5,267 <BONDS> 0 0 <PREFERRED-MANDATORY> 0 0 <PREFERRED> 5 5 <COMMON> 8 9 <OTHER-SE> 9,921 10,300 <TOTAL-LIABILITY-AND-EQUITY> 16,091 15,609 <SALES> 7,636 4,402 <TOTAL-REVENUES> 8,038 4,709 <CGS> 41 26 <TOTAL-COSTS> 426 369 <OTHER-EXPENSES> 7,240 4,129 <LOSS-PROVISION> 0 0 <INTEREST-EXPENSE> 7 5 <INCOME-PRETAX> 528 330 <INCOME-TAX> 211 132 <INCOME-CONTINUING> 0 0 <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 0 <CHANGES> 0 0 <NET-INCOME> 317 198 <EPS-PRIMARY> 0 0 <EPS-DILUTED> 0.02 0.01