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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1109357	Exelon Corp	EXC	Electric & Other Services Combined (4931)	232990190

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1411723	P. Denis O'brien	10 South Dearborn Street 54Th Floor Chicago IL 60603	Executive Vice President	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2010-05-17	8,000	$21.91	34,639	No	4	M	Direct
Common Stock	Disposition	2010-05-17	9,000	$41.74	25,639	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	NQ Stock Options 08/01/2000	Disposition	2010-05-17	9,000	$0.00	9,000	$21.91

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0			No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock - Espp	1,405	Direct
Common Stock (Deferred Shares)	6,636	Indirect	By Stock Deferral Plan

Footnotes

Exercise and sale made pursuant to a Rule 10b5-1 Sale Plan entered into on 05/29/2009.
Balance includes 74 shares acquired on 03/10/2010 through the automatic dividend reinvestment feature of Exelon plans.
Non qualified employee stock options, awarded pursuant to the Exelon Long Term Incentive Plan. Options vested in 1/3 increments on each of the first two anniversaries of the grant date, referenced in column one, and would expire on the tenth anniversay of the grant date.