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 *
SKOLDS JOHN L
   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, 37TH FLOOR		 3. Date of Earliest Transaction (Month/Day/Year)
05/12/2005
(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 05/12/2005   M(1)   20,000 A $ 29.75 62,537 (2) D  
Common Stock 05/12/2005   M(1)   11,250 A $ 23.46 73,787 D  
Common Stock 05/12/2005   S(1)   31,250 D $ 47.3 42,537 D  
Common Stock (Deferred Shares)               53,404 (3) I By Stock Deferral Plan
Common Stock (401k Shares)               3,658 (4) 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
Performance Shares - Stock Units (5)               (5)   (5) Common Stock (5)   26,856 (6) D  
NQ Stock Options (10/20/2000) $ 29.75 05/12/2005   M     20,000   (7)   (7) Common Stock 20,000 (7) 140,000 D  
NQ Stock Options (01/28/2002) $ 23.46 05/12/2005   M     11,250   (7)   (7) Common Stock 11,250 (7) 78,750 D  
Deferred Comp. - Phantom Shares (8) 05/13/2005   A   20     (8)   (8) Common Stock 20 $ 45.25 6,574 (9) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
SKOLDS JOHN L
10 SOUTH DEARBORN STREET
37TH FLOOR
CHICAGO, IL 60603		       Executive Vice President  

Signatures

 Scott N. Peters, Attorney in Fact for John L. Skolds   05/16/2005
**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) Exercise and sale made pursuant to a rule 10b5-1 trading plan entered into on March 4, 2005.
(2) Balance includes 120 shares acquired on 03/10/2005 through the automatic dividend reinvestment feature of Exelon plans.
(3) Balance includes 457 shares acquired on 03/10/2005 through the automatic dividend reinvestment feature of Exelon plans.
(4) Shares held as of 04/30/2005 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.
(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 up to one half of the second and third vestings may either be settled in common stock on a 1 for 1 basis, or be settled in cash based on the cash value of the underlying stock on the date of vesting.
(6) Balance includes 230 shares acquired on 03/10/2005 through the automatic dividend reinvestment feature of Exelon plans.
(7) 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.
(8) 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.
(9) Balance includes 56 shares acquired on 03/10/2005 through the automatic dividend reinvestment feature of Exelon plans.

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