X0203 3 2010-01-26 0 0001109357 EXELON CORP EXC 0001482379 Cornew Kenneth W. 10 SOUTH DEARBORN STREET 54TH FLOOR CHICAGO IL 60603 0 1 0 0 Senior VP Common Stock 10366 D Common Stock 5540 I By Immediate Family Performance Shares - Stock Units Common Stock 9609 D Restricted Stock Units 04/01/2005 Common Stock 4000 D Restricted Stock Units 08/01/2008 Common Stock 5000 D NQ Stock Options - 01/26/2004 32.54 Common Stock 200 D NQ Stock Options - 01/26/2004 32.54 Common Stock 3851 D NQ Stock Options - 01/24/2005 42.85 Common Stock 5550 D NQ Stock Options - 01/23/2006 58.55 Common Stock 6375 D NQ Stock Options - 01/22/2007 59.96 Common Stock 8500 D NQ Stock Options - 01/28/2008 73.29 Common Stock 11000 D NQ Stock Options - 01/26/2009 56.51 Common Stock 14900 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 first and second anniversaries of the award date. Under certain circumstances some or all of the vested shares may be settled in cash on a 1 for 1 basis based on the cash value of the underlying stock on the date of vesting. Restricted stock units granted under the Issuers Long Term Incentive Plan. Restricted stock units may be settled on a 1 for 1 basis for shares of Exelon common stock. 100% of the shares in this grant will vest on 04/01/2010. Restricted stock units granted under the Issuers Long Term Incentive Plan. Restricted stock units may be settled on a 1 for 1 basis for shares of Exelon common stock. 100% of the shares in this grant will vest on 08/01/2013. 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 Kenneth W. Cornew 2010-02-01