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
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
O'Brien Denis P.
   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)
Sr. Executive Vice President
(Last)
(First)
(Middle)
10 SOUTH DEARBORN STREET, 54TH FLOOR		 3. Date of Earliest Transaction (Month/Day/Year)
01/26/2015
(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 01/26/2015   M   57,597 A $ 37.34 91,886 D  
Common Stock 01/26/2015   F   23,472 (1) D $ 37.34 68,414 D  
Common Stock 01/26/2015   D   24,495 (2) D $ 37.34 43,919 D  
Common Stock - ESPP               1,405 D  
Common Stock (Deferred Shares)               8,352 (3) I By Stock Deferral Plan
Common Stock               20,000 I Held by spouse.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 1474 (9-02)

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 Unit Award 01/26/2015 $ 0 01/26/2015   A   21,823     (4)   (4) Common stock 21,823 (4) 21,823 D  
Restricted Stock Unit Award 01/27/2014 $ 0 01/26/2015   M     9,645   (4)   (4) Common stock 9,645 $ 37.34 19,294 (5) D  
Restricted Stock Unit Award 01/28/2013 $ 0 01/26/2015   M     8,679   (4)   (4) Common stock 8,679 $ 37.34 8,687 (6) D  
Performance Shares- Stock Units $ 0 01/26/2015   A   23,440     (7)   (7) Common stock 23,440 (7) 39,273 (7) (8) D  
Performance Shares- Stock Units $ 0 01/26/2015   M     39,273   (8)   (8) Common stock 39,273 $ 37.34 0 D  
Def. Comp. Phantom Share Equivalents (9)               (9)   (9) Common stock 5,545   5,545 (10) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
O'Brien Denis P.
10 SOUTH DEARBORN STREET
54TH FLOOR
CHICAGO, IL 60603		       Sr. Executive Vice President  

Signatures

 Lawrence C. Bachman, Attorney in Fact for Denis P. O'Brien   01/28/2015
**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) Shares withheld by the Issuer for reporting person's tax obligation.
(2) Shares settled in cash on a 1 for 1 basis.
(3) Balance includes 84 shares acquired on March 10, 2014; 68 shares acquired on June 10, 2014; 77 shares acquired on September 10, 2014; and 71 shares acquired on December 10, 2014 through automatic dividend reinvestment.
(4) Restricted stock unit award made pursuant to the Exelon Long Term Incentive Plan. 1/3 of the shares awarded will vest upon the first, second and third anniversary date that is referenced in column 1.
(5) Balance includes 289 shares acquired on March 10, 2014; 235 shares acquired on June 10, 2014; 267 shares acquired on September 10, 2014; and 247 shares acquired on December 10, 2014 through automatic dividend reinvestment.
(6) Balance includes 174 shares acquired on March 10, 2014; 141 shares acquired on June 10, 2014; 160 shares acquired on September 10, 2014; and 149 shares acquired on December 10, 2014 through automatic dividend reinvestment.
(7) Transition performance shares awarded pursuant to the Exelon Long Term Incentive Plan in connection with transition from one-year to three-year performance period for the performance share award program. Shares vest immediately upon award.
(8) 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 grant 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.
(9) Phantom share equivalents representing units held in the Exelon stock fund in a multi-fund, non-qualified deferred compensation plan. The Exelon stock fund is a unitized fund that consists of Exelon common stock and short term investments. Units of the fund will be settled upon the reporting person's separation from the board for any reason. Units will be settled in cash. Units are acquired through regular periodic contributions of deferred board compensation and the reinvestment of dividend equivalents. The balance of phantom share equivalents may fluctuate from time to time due to fluctuations in the fund composition.
(10) Balance as of December 31, 2014. Balance includes 57 share equivalents accrued on February 12, 2014; 48 on May 13, 2014; 53 on August 13, 2014; and 47 on November 13, 2014 through automatic dividend reinvestment.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.