X0201 3 2003-08-14 0 0000765258 IMCLONE SYSTEMS INC/DE IMCL 0001260931 GALLAGHER THOMAS C 0 1 0 0 Vice President, IP Common Stock 9750 D Employee Stock Option (Right to Buy) 5.6875 1988-08-08 2008-05-27 Common Stock 51 D Employee Stock Option (Right to Buy) 18.0625 1988-08-08 2009-12-16 Common Stock 80000 D Employee Stock Option (Right to Buy) 31.8125 1988-08-08 2010-12-20 Common Stock 5895 D Employee Stock Option (Right to Buy) 31.8125 1988-08-08 2010-12-20 Common Stock 4105 D Employee Stock Option (Right to Buy) 31.8125 1988-08-08 2010-12-20 Common Stock 5000 D Employee Stock Option (Right to Buy) 31.8125 1988-08-08 2010-12-20 Common Stock 5000 D Employee Stock Option (Right to Buy) 30.08 1988-08-08 2012-01-16 Common Stock 15000 D Employee Stock Option (Right to Buy) 6.94 2004-08-06 2012-08-05 Common Stock 2949 D Employee Stock Option (Right to Buy) 6.94 2004-08-06 2012-08-05 Common Stock 6051 D Employee Stock Option (Right to Buy) 11.91 1988-08-08 2012-12-19 Common Stock 3750 D Employee Stock Option (Right to Buy) 35.16 2004-07-21 2013-07-20 Common Stock 3500 D Employee Stock Option (Right to Buy) 30.08 1988-08-08 2012-01-16 Common Stock 10000 D These employee stock options became exercisable as to the original amount in two equal annual installments beginning on May 27, 1999. These employee stock options become exercisable as to the original amount in four equal annual installments beginning December 16, 2000. These employee stock options became exercisable as to the original amount in two annual installments beginning on December 21, 2001. These employee stock options became exercisable as to the original amount in two annual installments beginning on December 21, 2001. These employee stock options become exercisable as to the original amount in two equal annual installments beginning on December 21, 2003. These employee stock options became exercisable as to the original amount in two equal annual installments beginning on December 21, 2001. These employee stock options become exercisable as to the original amount in two equal annual installments beginning on January 17, 2003. These employee stock options become exercisable as to the original amount in two equal annual installments beginning on December 20, 2003. These employee stock options become exercisable as to the original amount in four equal annual installments beginning on January 17, 2003. /s/ Thomas Gallagher 2003-08-25