X0201 4 2003-09-17 0 0001018710 INTROGEN THERAPEUTICS INC INGN 0000217028 AVENTIS INC 300 SOMERSET CORPORATE BLVD. BRIDGEWATER NJ 08807 0 0 1 0 Common 2003-09-17 4 S 0 700000 10.18 D 0 I See Footnote Common 2003-09-18 4 S 0 14600 10.75 D 2770093 I See Footnote Owned directly by Aventis Holdings Inc, and beneficially owned by Aventis Inc. The Number of shares set forth under this column 5 on the Company's Form 4 Filed on September 12, 2003 was incorrectly reported as 3,560,293 instead of 3,520,293 Gerald P.Belle, President 2003-09-19