X0201 4 2004-02-02 1 0001109357 EXELON CORP EXC 0001230821 BEMIS MICHAEL B 10 SOUTH DEARBORN STREET 37TH FLOOR CHICAGO IL 60603 0 0 0 1 Officer through 01-31-2004 Common Stock 2004-02-02 4 A 0 15000 66.98 A 21773 D Common Stock 2004-02-02 4 M 0 4333 66.98 A 26106 D Common Stock 2004-02-02 4 F 0 5514 66.98 D 16749 D Common Stock (Deferred Shares) 5698 I By Stock Deferral Plan Performance Shares - Stock Units 66.98 2004-02-02 4 M 0 4333 D Common Stock 4333 0 D Reporting person elected to defer the converted Phantom Share - Stock Units into the Stock Deferral Plan, net of shares withheld for taxes. Balance includes the Phantom Share - Stock Units, which the reporting person elected to defer into the Stock Deferral Plan, net of 491 shares withheld for taxes. Performance Shares awarded pursuant to the Exelon Long Term Incentive Plan. 1/3 of the shares awarded vest immediately upon receipt. The remaining shares vest 1/3 on each of the second and third anniversaries of the award date. At the election of the reporting person, under certain circumstances up to one half of the second and third vestings may either be settled in common stock on a 1 for 1 basis, or be settled in cash based on the cash value of the underlying stock on the date of vesting. Scott N. Peters, Esq., Attorney in Fact for Michael B. Bemis 2004-02-03