<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM MEDIMMUNE, INC.'S YEARLY REPORT ON FORM 10-K FOR THE TWELVE MONTHS ENDED DECEMBER 31, 1997 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FILING. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-START> JAN-01-1997 <PERIOD-END> DEC-31-1997 <CASH> 29,984 <SECURITIES> 20,342 <RECEIVABLES> 18,300 <ALLOWANCES> 0 <INVENTORY> 28,857 <CURRENT-ASSETS> 2,740 <PP&E> 65,254 <DEPRECIATION> 0 <TOTAL-ASSETS> 170,336 <CURRENT-LIABILITIES> 43,660 <BONDS> 85,363 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 244 <OTHER-SE> 40,292 <TOTAL-LIABILITY-AND-EQUITY> 170,336 <SALES> 65,271 <TOTAL-REVENUES> 80,964 <CGS> 34,433 <TOTAL-COSTS> 118,380 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 3,483 <INCOME-PRETAX> (36,895) <INCOME-TAX> 0 <INCOME-CONTINUING> (36,895) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (36,895) <EPS-PRIMARY> (1.59) <EPS-DILUTED> (1.59)