EXC Exelon Corporation

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) 12/31/2019
(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 (Deferred Stock Units)	12/31/2019		A		867	A	$44.72	25731 (1)	I	By Exelon Directors Deferred Stock Unit Plan
Common Stock								267649	D
Common Stock								10000 (3)	I	By Lizzie Mae, LLC
Common Stock (401k shares)								2224 (2)	I	By 401(k) plan

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 200 shares acquired on December 10, 2019 through automatic dividend reinvestment.
(2)	Shares held as of November 30, 2019 in a multi-fund 401(k) Plan updated to reflect the additional shares acquired in the account though the automatic dividend reinvestment feature of the 401(k) plan.
(3)	The reporting person is a manager of Lizzie Mae, LLC, whose members are trusts for the benefit of the reporting person's children. 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
Elizabeth M. Hensen, Attorney in Fact for Mayo A. Shattuck III		1/2/2020
**Signature of Reporting Person		Date