X0201 4 2003-09-15 0 0001018710 INTROGEN THERAPEUTICS INC INGN 0000217028 AVENTIS INC 300 SOMERSET CORPORATE BLVD. BRIDGEWATER NJ 08807 0 0 1 0 Common 2003-09-15 4 S 0 13600 8.75 D 3484693 I (1) Common 2003-09-16 4 S 0 22000 8.62 D 3484693 I (1) Owned directly by Aventis Holdings Inc. and beneficially owned by Aventis Inc. Correction to Item 6 - Form filed by more than one reporting person. See attached Joint Filer Information. /s/Gerald P. Belle 2003-09-17