X0202 3/A 2004-09-21 2003-01-28 0 0000765258 IMCLONE SYSTEMS INC/DE IMCL 0001255855 RAMANATHAN ERIK 0 1 0 0 VP, Legal & General Counsel Employee Stock Option (right to buy) 44 1988-08-08 2010-07-16 Common Stock 21855 D Employee Stock Option (right to buy) 31.81 1988-08-08 2010-12-20 Common Stock 2400 D Employee Stock Option (right to buy) 30.08 1988-08-08 2012-01-16 Common Stock 4800 D Employee Stock Option (right to buy) 30.08 1988-08-08 2012-01-16 Common Stock 16000 D Employee Stock Option (right to buy) 6.94 1988-08-08 2012-08-05 Common Stock 10000 D Employee Stock Option (right to buy) 6.94 1988-08-08 2012-08-05 Common Stock 10000 D Employee Stock Option (right to buy) 11.91 1988-08-08 2012-12-19 Common Stock 5000 D Employee Stock Option (right to buy) 35.16 1988-08-08 2013-07-20 Common Stock 3500 D Employee Stock Option (right to buy) 39.79 1988-08-08 2013-12-21 Common Stock 4688 D Employee Stock Option (right to buy) 39.79 1988-08-08 2013-12-21 Common Stock 1562 D Employee Stock Option (right to buy) 10.6 1988-08-08 2013-01-23 Common Stock 5000 D These employee stock options become exercisable as to the original amount in four equal annual installments beginning on July 17, 2001. These employee stock options become exercisable in two equal annual installments beginning on December 21, 2001. These employee stock options become exercisable in two equal annual installments beginning on January 17, 2003. These employee stock options become exercisable in four equal annual installments beginning on January 17, 2003. These employee stock options become exercisable in four equal annual installments beginning on August 6, 2003. These employee stock options become exercisable in their entirety on August 6, 2004. These employee stock options become exercisable in two equal annual installments beginning on December 20, 2003. These employee stock options become exercisable in their entirety on July 21, 2004. These employee stock options become exercisable in two equal annual installments beginning on December 23, 2004. These employee stock options become exercisable in two equal annual installments beginning on December 23, 2004. These employee stock options become exercisable in four equal annual installments beginning on January 24, 2004. /s/ Erik D. Ramanathan 2004-09-23