PepGen (PEPG) awards stock options and RSUs to Chief Business & Legal Officer

Rhea-AI Filing Summary

Vittiglio Joseph reported acquisition or exercise transactions in this Form 4 filing.

PepGen Inc. reported that Chief Business & Legal Officer Joseph Vittiglio received new equity awards. He was granted stock options for 120,000 shares of PepGen common stock, which vest 25% on the one-year anniversary of the grant date, with the remaining 75% vesting in 36 equal monthly installments, subject to his continued service.

He also received 30,717 restricted stock units (RSUs), each representing the right to receive one share of common stock upon vesting. These RSUs vest in equal annual installments over four years, beginning on March 1, 2027, contingent on continued service. Following the RSU grant, he directly owned 65,717 shares of common stock.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Vittiglio Joseph

Role Chief Business & Legal Officer

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	120,000	$0.00	--
Grant/Award	Common Stock	30,717	$0.00	--

Holdings After Transaction: Stock Option (Right to Buy) — 120,000 shares (Direct); Common Stock — 65,717 shares (Direct)

Footnotes (1)

1. Consists of 30,717 restricted stock units ("RSUs"), each representing the contingent right to receive one share of Common Stock upon vesting. The RSUs vest in equal annual installments over four years, with the first installment vesting on March 1, 2027, subject to the Reporting Person's continued service to the Issuer on each such vesting date. This option shall vest and become exercisable as follows: 25% of the shares on the one-year anniversary of the Grant Date, with the remaining 75% vesting and becoming exercisable in 36 equal monthly installments thereafter, subject to the Reporting Person's continued service to the Issuer on each such vesting date.

Form 4 Insider Transactions: What Each Field Means →

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

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

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^*

Vittiglio Joseph

(Last) (First) (Middle)

C/O PEPGEN INC.

321 HARRISON AVE, 8TH FLOOR

(Street)

BOSTON MA 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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Business & Legal Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/01/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/01/2026		A		30,717(1)	A	$0	65,717	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 (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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$6.22	03/01/2026		A		120,000		(2)	02/29/2036	Common Stock	120,000	$0	120,000	D

Explanation of Responses:

1. Consists of 30,717 restricted stock units ("RSUs"), each representing the contingent right to receive one share of Common Stock upon vesting. The RSUs vest in equal annual installments over four years, with the first installment vesting on March 1, 2027, subject to the Reporting Person's continued service to the Issuer on each such vesting date.

2. This option shall vest and become exercisable as follows: 25% of the shares on the one-year anniversary of the Grant Date, with the remaining 75% vesting and becoming exercisable in 36 equal monthly installments thereafter, subject to the Reporting Person's continued service to the Issuer on each such vesting date.

	/s/ Noel Donnelly, as attorney-in-fact	03/02/2026
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What equity awards did PepGen (PEPG) grant to Joseph Vittiglio in this Form 4?

PepGen granted Chief Business & Legal Officer Joseph Vittiglio stock options for 120,000 shares and 30,717 restricted stock units (RSUs). The options and RSUs are part of his equity compensation and vest over multi-year schedules tied to continued service.

How do Joseph Vittiglio’s new PepGen (PEPG) stock options vest?

The 120,000 PepGen stock options granted to Joseph Vittiglio vest 25% on the one-year anniversary of the grant date. The remaining 75% then vest in 36 equal monthly installments, assuming he continues to serve PepGen on each vesting date.

What are the terms of the 30,717 RSUs disclosed for PepGen (PEPG) in this filing?

Joseph Vittiglio received 30,717 RSUs, each convertible into one share of PepGen common stock upon vesting. These RSUs vest in equal annual installments over four years, starting on March 1, 2027, conditioned on his continued service with the company.

Did Joseph Vittiglio buy or sell PepGen (PEPG) shares on the open market?

The filing shows equity awards classified as grants or other acquisitions, not open-market purchases or sales. Both the stock options and RSUs were awarded at a reported price of $0.0000 per share as part of his compensation package.

How many PepGen (PEPG) common shares does Joseph Vittiglio own after this Form 4?

After the reported RSU grant, Joseph Vittiglio directly owned 65,717 shares of PepGen common stock. This figure reflects his non-derivative holdings reported in the Form 4 and excludes the 120,000 stock options, which are derivative securities.

When will Joseph Vittiglio start receiving shares from his new PepGen (PEPG) RSUs?

The first installment of Joseph Vittiglio’s 30,717 RSUs is scheduled to vest on March 1, 2027. Subsequent portions vest in equal annual installments over the following three years, provided he continues serving PepGen on each vesting date.