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
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

SHATTUCK MAYO A III 		2. Issuer Name and Ticker or Trading Symbol

EXELON CORP [ EXC ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                      _____ 10% Owner
_____ Officer (give title below)      __ X __ Other (specify below)
Chairman of the Board
(Last)          (First)          (Middle)

10 SOUTH DEARBORN STREET, 54TH FLOOR 		3. Date of Earliest Transaction (MM/DD/YYYY)

6/30/2017
(Street)

CHICAGO, IL 60603
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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 (Def. Stock Units)   6/30/2017     A    990   A $36.62   15593   (1) I   By. Exelon Directors Deferred Stock Unit Plan  
Common Stock                  367649   D  
 
Common Stock                  2075   (2) I   By 401(k) plan  
Common Stock                  10000   (3) I   By Lizzie Mae, LLC  

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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

Explanation of Responses:
(1)  Balance includes 129 shares acquired on June 9, 2017 through automatic dividend reinvestment.
(2)  Shares held as of May 31, 2017 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.
(3)  Lizzie Mae, LLC, is a limited liability company of which the reporting person is the manager and to which the reporting person transferred shares of his Exelon common stock. On December 18, 2012, the reporting person transferred 1/3 membership interests in Lizzie Mae, LLC, to each of three trusts, each one for the benefit of one of the reporting person's three minor children. The reporting person's wife is a trustee of each of the trusts. The reporting person disclaims beneficial ownership of the Exelon Corporation common stock held by Lizzie Mae LLC except to the extent of his pecuniary interest therein.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
SHATTUCK MAYO A III
10 SOUTH DEARBORN STREET
54TH FLOOR
CHICAGO, IL 60603 		X

Chairman of the Board

Signatures
Scott N. Peters, Esq., Attorney in Fact for Mayo A. Shattuck III 6/30/2017
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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.
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