Sec Form 4 Filing - BUTLER CALVIN JR @ EXELON CORP - 2024-12-02

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 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 BUTLER CALVIN JR 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 X __ Officer (give title below) _____ Other (specify below) President & CEO (Last) (First) (Middle) 10 S DEARBORN STREET, 54TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 12/02/2024 (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 12/02/2024 M 37,532 A 143,850 D Common Stock 12/02/2024 F 16,705 D $ 38.37 127,145 D Common Stock 401k 4,039 ( 2 ) D

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 Retention RSUs ( 1 ) 12/02/2024 M 37,532 ( 1 ) ( 1 ) Common Stock 37,532 $ 38.37 0 D 2022 Restricted Stock Units ( 3 ) ( 3 ) ( 3 ) Common Stock 8,998 ( 4 ) 8,998 D 2023 Restricted Stock Units ( 3 ) ( 3 ) ( 3 ) Common Stock 44,967 ( 5 ) 44,967 D 2024 Restricted Stock Units ( 3 ) ( 3 ) ( 3 ) Common Stock 91,578 ( 6 ) 91,578 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other BUTLER CALVIN JR 10 S DEARBORN STREET 54TH FLOOR CHICAGO, IL60603 X President & CEO Signatures David T Skinner, attorney-in-fact for Calvin G Butler 12/03/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Restricted stock unit (RSU) award granted under the Exelon Long-term Incentive Plan (LTIP) on December 2, 2019. Each RSU represents the right to receive one share of Exelon common stock upon vesting. The remaining units granted under the award vested in full on December 2, 2024. ( 2 )Balance as of Nov. 30, 2024. ( 3 )RSU award granted under the Exelon LTIP. Award vests in 1/3 increments at the January or February meeting of the Exelon Talent Management and Compensation Committee with each RSU representing the right to receive one share of Exelon common stock upon vesting. The award accrues additional RSUs each quarter through automatic dividend reinvestment and the additional RSUs vest on the same schedule as the underlying award. ( 4 )Balance reflects 269 shares acquired during 2024 through automatic dividend reinvestment. ( 5 )Balance reflects 1,346 shares acquired during 2024 through automatic dividend reinvestment ( 6 )Balance reflects 2,742 shares acquired during 2024 through automatic dividend reinvestment.

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).

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