<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE FINANCIAL STATEMENTS OF PROTEON, INC. AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <MULTIPLIER> 1,000 <CURRENCY> U.S. DOLLARS <PERIOD-TYPE> 3-MOS 6-MOS 9-MOS <FISCAL-YEAR-END> DEC-31-1996 DEC-31-1996 DEC-31-1996 <PERIOD-START> JAN-01-1996 JAN-01-1996 JAN-01-1996 <PERIOD-END> MAR-30-1996 JUN-29-1996 SEP-30-1996 <EXCHANGE-RATE> 1 1 1 <CASH> 23,691 19,283 13,063 <SECURITIES> 8,649 7,621 8,593 <RECEIVABLES> 9,711 6,616 9,743 <ALLOWANCES> 0 0 0 <INVENTORY> 8,238 11,591 11,171 <CURRENT-ASSETS> 52,188 47,048 44,167 <PP&E> 32,343 32,892 32,753 <DEPRECIATION> 24,377 25,137 25,621 <TOTAL-ASSETS> 60,154 54,803 52,299 <CURRENT-LIABILITIES> 12,621 9,582 8,900 <BONDS> 0 0 0 <COMMON> 49,186 49,220 49,263 <PREFERRED-MANDATORY> 0 0 0 <PREFERRED> 0 0 0 <OTHER-SE> (1,653) (3,999) (5,864) <TOTAL-LIABILITY-AND-EQUITY> 60,154 54,803 52,299 <SALES> 10,297 18,056 25,357 <TOTAL-REVENUES> 14,018 24,664 35,253 <CGS> 5,685 10,284 14,457 <TOTAL-COSTS> 6,787 12,501 17,971 <OTHER-EXPENSES> 7,549 15,105 22,273 <LOSS-PROVISION> 0 0 0 <INTEREST-EXPENSE> (459) (738) (1,024) <INCOME-PRETAX> 141 (2,204) (3,967) <INCOME-TAX> 0 0 0 <INCOME-CONTINUING> 141 (2,204) (3,967) <DISCONTINUED> 0 0 0 <EXTRAORDINARY> 0 0 0 <CHANGES> 0 0 0 <NET-INCOME> 141 (2,204) (3,967) <EPS-PRIMARY> .01 (.14) (.26) <EPS-DILUTED> .01 (.14) (.26)