X0201 4/A 2003-09-03 2003-09-09 0 0000005981 AMERICAN VANGUARD CORP AVD 0001198398 WINTEMUTE ERIC G 4695 MACARTHUR COURT SUITE 1250 NEWPORT BEACH CA 92660 1 1 0 0 President & CEO Common Stock 2003-09-03 5 G 0 E 20000 0 A 268696 D The original Form 4 contained a typographical error showing an incorrect amount of securities beneficially owned following the reported transaction. This amendment corrects such typographical error. Also, the number of shares include 34,840 shares held in custodial or trustee accounts for the reporting person's minor children for which he acts as a trustee or custodian. /s/ Eric G. Wintemute 2004-04-06