<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM MAXYGEN, INC.'S QUARTERLY REPORT ON FROM 10-Q FOR THE PERIOD ENDED JUNE 30, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-2000 <PERIOD-START> JAN-01-2000 <PERIOD-END> JUN-30-2000 <CASH> 213,923 <SECURITIES> 9,995 <RECEIVABLES> 6,087 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 231,156 <PP&E> 6,804 <DEPRECIATION> 1,596 <TOTAL-ASSETS> 284,586 <CURRENT-LIABILITIES> 10,519 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 3 <OTHER-SE> 270,361 <TOTAL-LIABILITY-AND-EQUITY> 284,586 <SALES> 0 <TOTAL-REVENUES> 11,569 <CGS> 0 <TOTAL-COSTS> 0 <OTHER-EXPENSES> 27,944 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 108 <INCOME-PRETAX> (9,984) <INCOME-TAX> 0 <INCOME-CONTINUING> (9,984) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (9,984) <EPS-BASIC> (0.34) <EPS-DILUTED> (0.34)