Ownership Submission
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 *
  Nigro Joseph
2. Date of Event Requiring Statement (Month/Day/Year)
05/08/2018
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)
Sr. EVP & Chief Fin. Officer
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 81,873
D
 

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   (1)   (1) Common Stock 35,073 (2) $ (1) D  
Restricted Stock Unit Award (01/29/2018)   (3)   (3) Common Stock 40,000 $ (3) D  
NQ Stock Option (right to buy) 03/12/2012   (4)   (4) Common Stock 13,000 $ 39.81 D  
NQ Stock Option (right to buy) 01/24/2011   (4)   (4) Common Stock 13,400 $ 43.4 D  
NQ Stock Option (right to buy) 01/25/2010   (4)   (4) Common Stock 3,800 $ 46.09 D  
NQ Stock Option (right to buy) 01/26/2009   (4)   (4) Common Stock 4,300 $ 56.51 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Nigro Joseph
10 S. DEARBORN STREET
54TH FLOOR
CHICAGO, IL 60603
      Sr. EVP & Chief Fin. Officer  

Signatures

Elizabeth M. Hensen, Attorney-in-fact for Joseph Nigro 05/09/2018
**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) 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.
(2) Balance is composed of 7,836 shares which represents the last 1/3 increment of the restricted stock unit award granted in January 2016; 11,717 shares which represents 2/3 of the restricted stock unit award granted in January 2017; and 15,519 shares which is the entire restricted stock unit award granted in January 2018.
(3) Restricted stock unit award granted pursuant to the Exelon Long Term Incentive Plan. 100% of the shares vest on January 29, 2022.
(4) 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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