<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS FINANCIAL SUMMARY INFORMATION EXTRACTED FROM CONDENSED
CONSOLIDATED BALANCE SHEET - UNAUDITED AND CONDENSED CONSOLIDATED STATEMENT OF
INCOME AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH CONDENSED
CONSOLIDATED FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000859360
<NAME> LEGATO SYSTEMS, INC.
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 114,342
<SECURITIES> 54,537
<RECEIVABLES> 38,577
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 236,233
<PP&E> 37,355
<DEPRECIATION> 0
<TOTAL-ASSETS> 402,547
<CURRENT-LIABILITIES> 69,386
<BONDS> 0
0
0
<COMMON> 0
<OTHER-SE> 333,161
<TOTAL-LIABILITY-AND-EQUITY> 402,547
<SALES> 0
<TOTAL-REVENUES> 172,971
<CGS> 32,667
<TOTAL-COSTS> 206,589
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> (28,964)
<INCOME-TAX> (7,652)
<INCOME-CONTINUING> 0
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (21,312)
<EPS-BASIC> (0.25)
<EPS-DILUTED> (0.25)
</TABLE>