Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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 *
MOLER ELIZABETH A
   2. Issuer Name and Ticker or Trading Symbol
EXELON CORP [EXC] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Executive Vice President
(Last)
(First)
(Middle)
10 SOUTH DEARBORN STREET, 54TH FLOOR		 3. Date of Earliest Transaction (Month/Day/Year)
08/01/2009
(Street)

CHICAGO, IL 60603		 4. If Amendment, Date Original Filed(Month/Day/Year)
 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 Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 08/01/2009   M   10,000 A $ 50.86 30,119 (1) D  
Common Stock 08/01/2009   F   4,226 (2) D $ 50.86 25,893 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Units 07-27-2009 $ 0 (3) 08/01/2009   M     5,000   (3)   (3) Common Stock 5,000 $ 50.86 0 D  
Restricted Stock Units 08/01/2004 $ 0 (4) 08/01/2009   M     5,000   (4)   (4) Common Stock 5,000 $ 50.86 0 D  
Performance Shares- Stock Units $ 0 (5)               (5)   (5) Common Stock 22,607   22,607 (6) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
MOLER ELIZABETH A
10 SOUTH DEARBORN STREET
54TH FLOOR
CHICAGO, IL 60603		       Executive Vice President  

Signatures

 Scott N. Peters, Attorney in Fact for Elizabeth A. Moler   08/04/2009
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(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 227 shares acquired on 3/10/2009 and 210 shares acquired on 6/10/2009 through the automatic dividend reinvestment feature of Exelon plans.
(2) Shares witheld to satisfy the reporting person's income tax liability due upon vesting.
(3) Restricted stock units granted 07/27/2009 under the Exelon Long Term Incentive Program. Restricted stock units will be settled for shares on a 1 for 1 basis on the day of vesting.
(4) Restricted stock units granted 08/01/2004 under the Exelon Long Term Incentive Program. Restricted stock units will be settled for shares on a 1 for 1 basis on the day of vesting.
(5) 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. Under certain circumstances, some or all of the vested shares may be settled in cash on a 1 for 1 basis based on teh cash value of the underlying stock on the date of vesting.
(6) Balance includes the acquisition of 255 shares on 03/10/2009 and 236 shares on 06/10/2009 through the automatic dividend reinvestment feature of Exelon plans.

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