X0201 42003-08-13 0000706539 CHIRON CORP CHIR 0001198332 PENHOET EDWARD 4560 HORTON STREET EMERYVILLE CA 94608 1000Common Stock2003-08-135G0600D213796DThis is a transfer of securities by gift and involves no payment of consideration by the recipient of the gift.This amount includes 294 share rights subject to certain vesting.Edward E. Penhoet by Carolyn Mar-Andreotti as Atty-in-Fact2003-08-14