X0201 42003-12-16 0000350894 SEI CORP SEIC 0001101310 MCCARTHY KATHRYN ONE FREEDOM VALLEY DRIVE OAKS PA 19456 1000Stock Option (Right to Buy)29.562003-12-164A040000A2010-12-162013-12-16Common Stock40004000DThe option vests upon the earlier of the Issuer's attainment of specific levels of earnings per share or seven years from the date of the grant. The option will expire on the ten year anniversary of the date of the grant.Michelle Vaughn (Attorney-in-fact)2003-12-17