X0201 42003-08-27 0001068796 MAXYGEN INC MAXY 0001101713 RINGOLD GORDON C/O MAXYGEN, INC. 515 GALVESTON DRIVE REDWOOD CITY CA 94063 1000Common Stock2003-06-065G012000D2494813ITechnogen and Family TrustCommon Stock2003-08-274S065512.50D526076IGordon Ringold and Tanya Zarucki 1999 Trust Common Stock2003-08-274S010012.48D525976IGordon Ringold and Tanya Zarucki 1999 Trust Common Stock2003-08-274S0264512.47D523331IGordon Ringold and Tanya Zarucki 1999 Trust Common Stock2003-08-274S0510012.4504D518231IGordon Ringold and Tanya Zarucki 1999 Trust Common Stock2003-08-274S030012.45D517931IGordon Ringold and Tanya Zarucki 1999 Trust Common Stock2003-08-284S050012.50D517431IGordon Ringold and Tanya Zarucki 1999 Trust Common Stock2003-08-284S03412.455D517397IGordon Ringold and Tanya Zarucki 1999 Trust Common Stock2003-08-284S0375012.45D513647IGordon Ringold and Tanya Zarucki 1999 Trust Common Stock1396531ITechnogenCommon Stock865DThe disposition had no price as it was a gift.The indirect holding of Dr. Ringold after the indicated transaction included 1,961,574 shares of Maxygen common stock that were held by Technogen Associates, L.P. and 63,198 shares that were held by Technogen Enterprises, L.L.C. Technogen Managers, L.L.C. is the general partner of Technogen Associates , L.P. Dr. Ringold is a Managing Member of Technogen Enterprises, L.L.C. and Technogen Managers, L.L.C. and disclaims beneficial ownership of these shares except to the extent of his pecuniary interest in the limited liability companies. Dr. Ringold's indirect holdings also include 470,041 shares held by the Gordon Ringold and Tanya Zarucki 1999 Trust. Includes 5,632 shares of Maxygen common stock received as a pro rata distribution from Technogen Associates L.P. Also includes 51,058 shares received as a pro rata distribution from Technogen Managers, L.L.C., which received the shares as a result of a pro rata distribution from Technogen Associates, L.P. In prior reports (and in footnote 2 hereof), Dr. Ringold reported beneficial ownership of all shares held by Technogen Associates L.P.Excludes 628,241 shares of Maxygen common stock distributed by Technogen Associates L.P. since the transaction reported on line 1 hereof.Consists of 1,333,333 shares of Maxygen common stock held by Technogen Associates, L.P. and 63,198 shares held by Technogen Enterprises, L.L.C. Technogen Managers, L.L.C. is the general partner of Technogen Associates , L.P. Dr. Ringold is a Managing Member of Technogen Enterprises, L.L.C. and Technogen Managers, L.L.C. and disclaims beneficial ownership of these shares except to the extent of his pecuniary interest in the limited liability companies.Consists of 865 shares of Maxygen common stock received as a pro rata distribution from Technogen Managers, L.L.C., which received the shares as a result of a pro rata distribution from Technogen Associates, L.P. In prior reports (and in footnote 2 hereof), Dr. Ringold reported indirect beneficial ownership of all shares held by Technogen Associates, L.P. Gordon Ringold2003-08-28