Sec Form 3 Filing - Trpik Joseph R JR @ EXELON CORP - 2022-05-10

FORM 3 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 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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1. Name and Address of Reporting Person Trpik Joseph R JR 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) SVP & Corp. Controller (Last) (First) (Middle) 10 S DEARBORN STREET, 54TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 05/10/2022 (Street) CHICAGO, IL60603 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 26,662 D Common Stock (401k plan shares) 1,365 D Common Stock 6,271 I Held by spouse

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 (01/27/2020) ( 1 ) ( 1 ) ( 1 ) Common stock 1,234( 1 ) D Restricted Stock Unit Award (01/25/2021) ( 2 ) ( 2 ) ( 2 ) Common stock 2,589( 2 ) D Restricted Stock Unit Award (01/28/2022) ( 3 ) ( 3 ) ( 3 ) Common stock 2,871( 3 ) D Restricted Stock Unit Award (05/02/2022) ( 4 ) ( 4 ) ( 4 ) Common stock 906( 4 ) D Earned Performance RSU ( 5 ) ( 5 ) ( 5 ) Common stock 7,298( 5 ) D Deferred Phantom Shares ( 6 ) ( 6 ) ( 6 ) Common stock 508( 6 ) D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Trpik Joseph R JR 10 S DEARBORN STREET 54TH FLOOR CHICAGO, IL60603 SVP & Corp. Controller Signatures Elizabeth M. Hensen, Attorney-in-Fact for Joseph Trpik, Jr. 05/16/2022 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Remaining 1/3 increment of annual restricted stock unit (RSU) award granted in January 2020 pursuant to the Exelon Long Term Incentive Plan; each award vests in 1/3 increments on the date of the Compensation Committee's January or February meeting in the first, second and third years after the award was granted. Award balances accrue additional units through automatic dividend reinvestment, which vest on the same schedule as the underlying award. ( 2 )Remaining 2/3 increment of annual RSU award granted in January 2021 pursuant to the Exelon Long Term Incentive Plan; each award vests in 1/3 increments on the date of the Compensation Committee's January or February meeting in the first, second and third years after the award was granted. Award balances accrue additional units through automatic dividend reinvestment, which vest on the same schedule as the underlying award. ( 3 )Annual RSU award granted in January 2022 pursuant to the Exelon Long Term Incentive Plan; each award vests in 1/3 increments on the date of the Compensation Committee's January or February meeting in the first, second and third years after the award was granted. Award balances accrue additional units through automatic dividend reinvestment, which vest on the same schedule as the underlying award. ( 4 )Additional RSU award granted in May 2022 pursuant to the Exelon Long Term Incentive Plan; this award vests in 1/3 increments on the date of the Compensation Committee's January or February meeting in the first, second and third years after the award was granted. Award balances accrue additional units through automatic dividend reinvestment, which vest on the same schedule as the underlying award. ( 5 )RSU award granted pursuant to the Exelon Long Term Incentive Plan; Award cliff vests at the January 2023 meeting of the Compensation Committee with each RSU representing the right to receive one share of Exelon common stock upon vesting. RSUs accrue quarterly dividend equivalents in the form of additional RSUs representing common stock dividends as approved by the Board, which vest on the same schedule as the underlying RSU. ( 6 )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 company 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 due to periodic changes in the fund composition.

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).

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