X0202 3 2005-03-01 0 0001109357 EXELON CORP EXC 0001185162 MITCHELL J BARRY 10 SOUTH DEARBORN STREET 37TH FLOOR CHICAGO IL 60603 0 1 0 0 Senior Vice President and CFO Common Stock 22613 D Common Stock (401k Shares) 5441 D Common Stock (Deferred Shares) 19228 I By Stock Deferral Plan Performance Shares - Stock Units Common Stock 11060 D Deferred Comp. Phantom Shares Common Stock 4837 D NQ Stock Options (02-23-1999) 18.84 Common Stock 27000 D NQ Stock Options (02-29-2000) 18.66 Common Stock 21600 D NQ Stock Options (10-20-2000) 29.75 Common Stock 24000 D NQ Stock Options (01-28-2002) 23.46 Common Stock 30000 D NQ Stock Options (01-27-2003) 24.81 Common Stock 30000 D NQ Stock Options (01-26-2004) 32.54 Common Stock 30000 D NQ Stock Options (01-24-2005) 42.85 Common Stock 21000 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 in 1/3 increments 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. Phantom shares held in a multi-fund deferred compensation plan to be settled for cash upon the reporting person's termination of employment for any reason on a 1:1 basis. Shares are acquired through regular periodic contributions, company matching contributions, and the automatic reinvestment of dividends. Non qualified employee stock options, awarded pursuant to the Exelon Long Term Incentive Plan. Options vest in 1/3 increments on each of the first three anniversaries of the grant date, referenced in column one, and expire on the tenth anniversay of the grant date. Non qualified employee stock options, awarded pursuant to the Exelon Long Term Incentive Plan. Options vest in 1/4 increments on each of the first four anniversaries of the grant date, referenced in column one, and expire on the tenth anniversay of the grant date. Scott N. Peters, Attorney in Fact for J. Barry Mitchell 2005-03-01