Edgar Filing: O'Brien Denis P.

Ownership Submission

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person ^*

Â O'Brien Denis P.

2. Date of Event Requiring Statement (Month/Day/Year)
08/31/2007

3. Issuer Name and Ticker or Trading Symbol
EXELON CORP [EXC]

(Last)

(First)

(Middle)

10 SOUTH DEARBORN STREET,Â 54TH FLOOR

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

_____ Director	_____ 10% Owner
__X__ Officer (give title below)	_____ Other (specify below)
Executive VP

5. If Amendment, Date Original Filed(Month/Day/Year)

(Street)

CHICAGO,Â ILÂ 60603

6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

(City)

(State)

(Zip)

Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	29,151 ⁽¹⁾ ⁽²⁾	D	Â
Common Stock (Deferred Shares)	6,036	I	By the Stock Deferral Plan

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)
Performance Shares - Stock Units	Â ⁽³⁾	Â ⁽³⁾	Common Stock	14,636	$ ⁽³⁾	D	Â
Deferred Comp. Phantom Shares	Â ⁽⁴⁾	Â ⁽⁴⁾	Common Stock	2,088	$ ⁽⁴⁾	D	Â
NQ Stock Options 02/29/2000	Â ⁽⁵⁾	Â ⁽⁵⁾	Common Stock	8,000	$ 18.66	D	Â
NQ Stock Options 08/01/2000	Â ⁽⁵⁾	Â ⁽⁵⁾	Common Stock	9,000	$ 21.91	D	Â
NQ Stock Options 01/27/2003	Â ⁽⁶⁾	Â ⁽⁶⁾	Common Stock	30,000	$ 24.805	D	Â
NQ Stock Options 01/26/2004	Â ⁽⁶⁾	Â ⁽⁶⁾	Common Stock	30,000	$ 32.54	D	Â
NQ Stock Options 01/24/2005	Â ⁽⁶⁾	Â ⁽⁶⁾	Common Stock	29,000	$ 42.85	D	Â
NQ Stock Options 01/23/2006	Â ⁽⁶⁾	Â ⁽⁶⁾	Common Stock	20,000	$ 58.55	D	Â
NQ Stock Options 01-22-2007	Â ⁽⁶⁾	Â ⁽⁶⁾	Common Stock	19,000	$ 59.96	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
O'Brien Denis P. 10 SOUTH DEARBORN STREET 54TH FLOOR CHICAGO,Â ILÂ 60603	Â	Â	Â Executive VP	Â

Signatures

Scott N. Peters, Attorney in Fact for Denis P. O'Brien		09/10/2007
^**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Balance includes 5000 restricted shares.
(2)	Balance includes 1,405 shares previously acquired through the Employee Stock Purchase Plan.
(3)	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.
(4)	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.
(5)	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.
(6)	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.

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