SEC FORM 4

SEC FORM 4 SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

McArthur James G

(Last)

(First)

(Middle)

321 HARRISON AVE., 8TH FLOOR

C/O PEPGEN INC.

(Street)

BOSTON

02118

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
PepGen Inc. [ PEPG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
11/04/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

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. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Option (Right to Buy)	$8.96	11/04/2025		D⁽¹⁾			352,705	⁽²⁾	09/05/2031	Common Stock	352,705	$0	0	D
Stock Option (Right to Buy)	$4.53	11/04/2025		A⁽¹⁾		352,705		⁽²⁾	09/05/2031	Common Stock	352,705	$0	352,705	D
Stock Option (Right to Buy)	$8.96	11/04/2025		D⁽¹⁾			40,815	⁽³⁾	09/05/2031	Common Stock	40,815	$0	0	D
Stock Option (Right to Buy)	$4.53	11/04/2025		A⁽¹⁾		40,815		⁽³⁾	09/05/2031	Common Stock	40,815	$0	40,815	D
Stock Option (Right to Buy)	$8.96	11/04/2025		D⁽¹⁾			40,815	⁽⁴⁾	09/05/2031	Common Stock	40,815	$0	0	D
Stock Option (Right to Buy)	$4.53	11/04/2025		A⁽¹⁾		40,815		⁽⁴⁾	09/05/2031	Common Stock	40,815	$0	40,815	D
Stock Option (Right to Buy)	$11.23	11/04/2025		D⁽¹⁾			40,815	⁽⁵⁾	03/06/2032	Common Stock	40,815	$0	0	D
Stock Option (Right to Buy)	$4.53	11/04/2025		A⁽¹⁾		40,815		⁽⁵⁾	03/06/2032	Common Stock	40,815	$0	40,815	D
Stock Option (Right to Buy)	$12	11/04/2025		D⁽¹⁾			466,095	⁽⁶⁾	05/05/2032	Common Stock	466,095	$0	0	D
Stock Option (Right to Buy)	$4.53	11/04/2025		A⁽¹⁾		466,095		⁽⁶⁾	05/05/2032	Common Stock	466,095	$0	466,095	D
Stock Option (Right to Buy)	$15.25	11/04/2025		D⁽¹⁾			275,000	⁽⁶⁾	02/28/2033	Common Stock	275,000	$0	0	D
Stock Option (Right to Buy)	$4.53	11/04/2025		A⁽¹⁾		275,000		⁽⁶⁾	02/28/2033	Common Stock	275,000	$0	275,000	D
Stock Option (Right to Buy)	$16.62	11/04/2025		D⁽¹⁾			300,000	⁽⁶⁾	02/28/2034	Common Stock	300,000	$0	0	D
Stock Option (Right to Buy)	$4.53	11/04/2025		A⁽¹⁾		300,000		⁽⁶⁾	02/28/2034	Common Stock	300,000	$0	300,000	D

Explanation of Responses:

1. On November 4, 2025, the Issuer's Board of Directors approved a repricing of the Reporting Person's outstanding stock options granted under the Issuer's 2020 Stock Plan, 2022 Stock Option and Incentive Plan, and 2024 Inducement Plan. The exercise price of eligible options was reduced to $4.53, with all other terms unchanged except that the reduced exercise price is available only if the Reporting Person satisfies the applicable retention period; otherwise, the original exercise price will apply. The transactions reported herein are exempt pursuant to Rules 16b-6(d) and 16b-3 under the Securities Exchange Act of 1934.

2. This stock option vests over four years following the vesting commencement date (September 6, 2021) with 25% of such shares vesting on the first anniversary of the vesting commencement date, and the remaining shares vesting in 36 equal monthly installments, subject to continued service through each vesting date.

3. This stock option vests over four years following the vesting commencement date (September 17, 2021) with 25% of such shares vesting on the first anniversary of the vesting commencement date, and the remaining shares vesting in 36 equal monthly installments, subject to continued service through each vesting date.

4. This stock option vests over four years following the vesting commencement date (October 6, 2021) with 25% of such shares vesting on the first anniversary of the vesting commencement date, and the remaining shares vesting in 36 equal monthly installments, subject to continued service through each vesting date.

5. This stock option vests over four years following the vesting commencement date (March 7, 2022) with 25% of such shares vesting on the first anniversary of the vesting commencement date, and the remaining shares vesting in 36 equal monthly installments, subject to continued service through each vesting date.

6. This option shall vest as follows: twenty-five percent (25%) on the one-year anniversary of the Grant Date and the remainder vesting in thirty-six (36) equal monthly installments, subject to the option recipient's continued service or employment with the Company on each applicable vesting date.

	/s/ Noel Donnelly, as attorney-in-fact	12/18/2025
	** Signature of Reporting Person	Date
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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SEC Form 4 filed by President and CEO Mcarthur James G