<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM MAGAININ
PHARMACEUTICAL INC.'S BALANCE SHEET AS OF JUNE 30, 2000 AND THE RELATED
STATEMENT OF INCOME FOR THE SIX-MONTH PERIOD ENDED JUNE 30, 2000 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 3,317
<SECURITIES> 8,933
<RECEIVABLES> 0
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 12,462
<PP&E> 4,491
<DEPRECIATION> 3,078
<TOTAL-ASSETS> 14,041
<CURRENT-LIABILITIES> 3,732
<BONDS> 0
507
0
<COMMON> 56
<OTHER-SE> 6,520
<TOTAL-LIABILITY-AND-EQUITY> 14,041
<SALES> 0
<TOTAL-REVENUES> 0
<CGS> 0
<TOTAL-COSTS> 0
<OTHER-EXPENSES> 5,466
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 309
<INCOME-PRETAX> (5,480)
<INCOME-TAX> 0
<INCOME-CONTINUING> 0
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (5,487)
<EPS-BASIC> (.20)
<EPS-DILUTED> (.20)
</TABLE>