<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
<S> <C> <C> <C>
<PERIOD-TYPE> YEAR YEAR 9-MOS
<FISCAL-YEAR-END> DEC-31-1998 DEC-31-1999 DEC-31-2000
<PERIOD-START> JAN-01-1998 JAN-01-1999 JAN-01-2000
<PERIOD-END> DEC-31-1998 DEC-31-1999 SEP-30-2000
<EXCHANGE-RATE> 1 1 1
<CASH> 4,779 3,684 10,218
<SECURITIES> 12,798 8,525 19,266
<RECEIVABLES> 209 0 0
<ALLOWANCES> 0 0 0
<INVENTORY> 0 0 0
<CURRENT-ASSETS> 599 438 633
<PP&E> 3,024 3,965 4,984
<DEPRECIATION> 724 1,456 2,104
<TOTAL-ASSETS> 21,063 15,518 33,471
<CURRENT-LIABILITIES> 1,446 1,859 2,968
<BONDS> 3,367 4,432 4,632
24,665 24,665 46,502
0 0 0
<COMMON> 0 0 0
<OTHER-SE> (8,414) (15,437) (20,630)
<TOTAL-LIABILITY-AND-EQUITY> 21,063 15,518 33,471
<SALES> 0 0 0
<TOTAL-REVENUES> 1,419 2,238 2,768
<CGS> 0 0 0
<TOTAL-COSTS> 0 0 0
<OTHER-EXPENSES> 8,343 10,083 11,242
<LOSS-PROVISION> 0 0 0
<INTEREST-EXPENSE> (521) (400) (720)
<INCOME-PRETAX> (6,403) (7,445) (7,754)
<INCOME-TAX> 0 0 0
<INCOME-CONTINUING> (6,403) (7,445) (7,754)
<DISCONTINUED> 0 0 0
<EXTRAORDINARY> 0 0 0
<CHANGES> 0 0 0
<NET-INCOME> (6,403) (7,445) (7,754)
<EPS-BASIC> (3.12) (3.57) (3.63)
<EPS-DILUTED> (3.12) (3.57) (3.63)
</TABLE>