X0202 4 2005-11-21 0001109357 EXELON CORP EXC 0001067838 ROWE JOHN W 10 SOUTH DEARBORN STREET 37TH FLOOR CHICAGO IL 60603 0 1 0 0 Chairman, President and CEO Common Stock 2005-11-21 4 S 0 700 51.52 D 130648 D Common Stock (Deferred Shares) 271002 I By Stock Deferral Plan Common Stock (401k Shares) 5653 D Common Stock 3500 I Held By Spouse Exercise and sale made pursuant to a rule 10b5-1 trading plan entered into on February 25, 2005. Shares were sold through small lots which are reported as individual sales on this form and on a second Form 4 being filed simultaneously because the EDGAR system will only accept 30 transactions on a single form. Shares held as of 10/31/2005 in a multi-fund 401(k) Plan to be settled in 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. Scott N. Peters, Attorney in Fact for John W. Rowe 2005-11-22