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THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM SIEBEL SYSTEMS, INC. QUARTERLY REPORT ON FORM 10-Q FOR THE QUARTER ENDED JUNE 30, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. 1,000 6-MOS Jan-01-2000 Dec-31-2000 Jun-30-2000 701,457 296,941 317,922 0 0 1,445,037 104,578 0 1,620,933 427,262 0 0 0 206 892,036 1,620,933 435,387 699,905 9,076 174,900 408,810 0 0 145,393 58,501 86,892 0 0 0 86,892 (0.06) (0.06) 1 ITEM IS SHOWN NET OF ALLOWANCE, CONSISTENT WITH BALANCE SHEET PRESENTATION.