X0203 3 2008-09-10 0 0000765258 IMCLONE SYSTEMS INC IMCL 0001445421 Schloss David IMCLONE SYSTEMS INCORPORATED 33 IMCLONE DRIVE BRANCHBURG NJ 08876 0 1 0 0 VP, Human Resources Stock Option (Right to Buy) 31.15 2017-08-20 Common Stock 9000 D Stock Option (Right to Buy) 31.15 2009-08-20 2017-08-20 Common Stock 9000 D Stock Option (Right to Buy) 31.15 2010-08-20 2017-08-20 Common Stock 9000 D Stock Option (Right to Buy) 31.15 2011-08-20 2017-08-20 Common Stock 9000 D Restricted Stock Unit 0 2009-02-15 Common Stock 334 D Restricted Stock Unit 0 2010-02-15 Common Stock 333 D Restricted Stock Unit 0 2011-02-15 Common Stock 333 D These stock options vested on August 20, 2008. Unless earlier forfeited under the terms of the restricted stock unit award, the award will vest and convert into common stock on the vesting date. No securities are beneficially owned /S/ GREGORY T. MAYES 2008-09-19