<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
UNAUDITED FINANCIAL STATEMENTS AS OF MARCH 31, 2000 AND FOR THE THREE MONTHS
THEN ENDED AND FROM THE AUDITED FINANCIAL STATEMENTS AS OF DECEMBER 31, 1999 AND
FOR THE YEAR THEN ENDED AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>
<MULTIPLIER> 1,000
<S> <C> <C>
<PERIOD-TYPE> YEAR 3-MOS
<FISCAL-YEAR-END> DEC-31-1999 DEC-31-2000
<PERIOD-START> JAN-01-1999 JAN-01-2000
<PERIOD-END> DEC-31-1999 MAR-31-2000
<CASH> 8,312 46,511
<SECURITIES> 10,951 8,684
<RECEIVABLES> 156 25
<ALLOWANCES> 0 0
<INVENTORY> 0 0
<CURRENT-ASSETS> 19,706 56,175
<PP&E> 5,471 6,121
<DEPRECIATION> 1,362 1,705
<TOTAL-ASSETS> 34,788 79,550
<CURRENT-LIABILITIES> 4,255 5,099
<BONDS> 1,389 1,123
0 0
41,432 82,738
<COMMON> 5 7
<OTHER-SE> (15,600) (12,953)
<TOTAL-LIABILITY-AND-EQUITY> 34,788 79,550
<SALES> 0 0
<TOTAL-REVENUES> 983 292
<CGS> 0 0
<TOTAL-COSTS> 21,561 8,712
<OTHER-EXPENSES> 82 26
<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> 293 71
<INCOME-PRETAX> (20,314) (7,896)
<INCOME-TAX> 0 0
<INCOME-CONTINUING> (20,314) (7,896)
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> (20,314) (7,896)
<EPS-BASIC> (5.04) (2.77)
<EPS-DILUTED> (5.04) (2.77)
</TABLE>