FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF 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 *   Innocenzo Michael 2. Date of Event Requiring Statement (Month/Day/Year) 03/30/2018 3. Issuer Name and Ticker or Trading Symbol EXELON CORP [EXC] (Last) (First) (Middle) 10 S. DEARBORN STREET, 54TH FLOOR 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President & CEO of PECO 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) CHICAGO, IL 60603 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 Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 29,092 D   Common Stock (ESPP shares) 1,504 (1) D Â

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit Awards	  (2)	  (2)	Common Stock	7,310 (3)	$ (2)	D	Â
Deferred Compensation Equivalent Shares	  (4)	  (4)	Common Stock	1,788	$ (4)	D	Â
NQ Stock Option (right to buy) 03/12/2012	  (5)	  (5)	Common Stock	16,000	$ 39.81	D	Â
NQ Stock Option (right to buy) 01/24/2010	  (5)	  (5)	Common Stock	3,800	$ 46.09	D	Â
NQ Stock Option (right to buy) 01/26/2009	  (5)	  (5)	Common Stock	4,300	$ 56.51	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Innocenzo Michael 10 S. DEARBORN STREET 54TH FLOOR CHICAGO, IL 60603	Â	Â	  President & CEO of PECO	Â

Signatures

Katherine A. Smith, Attorney-in-fact for Michael Innocenzo		04/02/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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 acquired through and held as of March 30, 2018 in Exelon's Section 423 tax-qualified Employee Stock Purchase Plan.
(2)	Restricted stock unit awards granted pursuant to the Exelon Long Term Incentive Plan. Share awards are granted annually by the Compensation and Leadership Development committee at its January meeting and vest in 1/3 increments on the date of the committee's January meeting in the first, second and third years after the award was granted.
(3)	Balance is composed of 1,636 shares which represents the last 1/3 increment of the restricted stock unit award granted in January 2016; 2,441 shares which represents 2/3 of the restricted stock unit award granted in January 2017; and 3,232 shares which is the entire restricted stock unit award granted in January 2018.
(4)	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 termination of service for any reason. Units will be settled in cash. Units are acquired through regular periodic contributions, company matching contributions 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.
(5)	Non qualified employee stock option awards granted pursuant to the Exelon Long Term Incentive Plan. Options vest in 1/4 increments on each of the first four anniversaries of the grant date, referenced in column one, and expire on the tenth anniversay of the grant date.

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