X0201 4 2004-01-26 0001109357 EXELON CORP EXC 0001230821 BEMIS MICHAEL B 10 SOUTH DEARBORN STREET 37TH FLOOR CHICAGO IL 60603 0 1 0 0 Senior Vice President Common Stock 2004-01-26 4 A 0 2167 A 8940 D Common Stock 2004-01-26 4 F 0 311 65.08 D 6773 D Common Stock (Deferred Shares) 1855 I By Stock Deferral Plan Performance Shares - Stock Units 2004-01-26 4 A 0 4333 A Common Stock 4333 4333 D 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. Reporting person elected to defer receipt of vested shares, by transferring them to a Stock Deferral Plan net of shares withheld for tax obligation. Balance includes those shares deferred as noted above, net of shares withheld for tax obligation. Scott N. Peters, Esq., Attorney in Fact for Michael B. Bemis 2004-01-28