MCARTHUR JAMES G

Filed: 12/18/2025ACC: 0001835597-25-000015

InsiderMCARTHUR JAMES GCIK 1763307

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IssuerPEPGEN INC.CIK 1835597

DirectorOfficer· President and CEO

Since May 2022

0.00

Net shares

Net seller

$0.00

Total acquired

Open market trades

0B · 0S

Total transactions

1.52M acquired · 1.52M disposed

Non-Derivative Transactions0

No non-derivative transactions reported

Derivative Transactions14

Stock Option (Right to Buy)

Direct

D · Disposition

Converts to

Common Stock

352.70K shares

−352.70K

Strike price

8.96

Held after

0.00

Exercisable

—

11/4/2025

Stock Option (Right to Buy)

Direct

A · Award

Converts to

Common Stock

352.70K shares

+352.70K

Strike price

4.53

Held after

352.70K

Exercisable

—

11/4/2025

Stock Option (Right to Buy)

Direct

D · Disposition

Converts to

Common Stock

40.81K shares

−40.81K

Strike price

8.96

Held after

0.00

Exercisable

—

11/4/2025

Stock Option (Right to Buy)

Direct

A · Award

Converts to

Common Stock

40.81K shares

+40.81K

Strike price

4.53

Held after

40.81K

Exercisable

—

11/4/2025

Stock Option (Right to Buy)

Direct

D · Disposition

Converts to

Common Stock

40.81K shares

−40.81K

Strike price

8.96

Held after

0.00

Exercisable

—

11/4/2025

Stock Option (Right to Buy)

Direct

A · Award

Converts to

Common Stock

40.81K shares

+40.81K

Strike price

4.53

Held after

40.81K

Exercisable

—

11/4/2025

Stock Option (Right to Buy)

Direct

D · Disposition

Converts to

Common Stock

40.81K shares

−40.81K

Strike price

11.23

Held after

0.00

Exercisable

—

11/4/2025

Stock Option (Right to Buy)

Direct

A · Award

Converts to

Common Stock

40.81K shares

+40.81K

Strike price

4.53

Held after

40.81K

Exercisable

—

11/4/2025

Stock Option (Right to Buy)

Direct

D · Disposition

Converts to

Common Stock

466.10K shares

−466.10K

Strike price

12.00

Held after

0.00

Exercisable

—

11/4/2025

Stock Option (Right to Buy)

Direct

A · Award

Converts to

Common Stock

466.10K shares

+466.10K

Strike price

4.53

Held after

466.10K

Exercisable

—

11/4/2025

Stock Option (Right to Buy)

Direct

D · Disposition

Converts to

Common Stock

275K shares

−275K

Strike price

15.25

Held after

0.00

Exercisable

—

11/4/2025

Stock Option (Right to Buy)

Direct

A · Award

Converts to

Common Stock

275K shares

+275K

Strike price

4.53

Held after

275K

Exercisable

—

11/4/2025

Stock Option (Right to Buy)

Direct

D · Disposition

Converts to

Common Stock

300K shares

−300K

Strike price

16.62

Held after

0.00

Exercisable

—

11/4/2025

Stock Option (Right to Buy)

Direct

A · Award

Converts to

Common Stock

300K shares

+300K

Strike price

4.53

Held after

300K

Exercisable

—

11/4/2025

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (Right to Buy) Direct	Common Stock352.70K shares	11/4/2025	D · Disposition	−352.70K	8.96	—	0.00
Stock Option (Right to Buy) Direct	Common Stock352.70K shares	11/4/2025	A · Award	+352.70K	4.53	—	352.70K
Stock Option (Right to Buy) Direct	Common Stock40.81K shares	11/4/2025	D · Disposition	−40.81K	8.96	—	0.00
Stock Option (Right to Buy) Direct	Common Stock40.81K shares	11/4/2025	A · Award	+40.81K	4.53	—	40.81K
Stock Option (Right to Buy) Direct	Common Stock40.81K shares	11/4/2025	D · Disposition	−40.81K	8.96	—	0.00
Stock Option (Right to Buy) Direct	Common Stock40.81K shares	11/4/2025	A · Award	+40.81K	4.53	—	40.81K
Stock Option (Right to Buy) Direct	Common Stock40.81K shares	11/4/2025	D · Disposition	−40.81K	11.23	—	0.00
Stock Option (Right to Buy) Direct	Common Stock40.81K shares	11/4/2025	A · Award	+40.81K	4.53	—	40.81K
Stock Option (Right to Buy) Direct	Common Stock466.10K shares	11/4/2025	D · Disposition	−466.10K	12.00	—	0.00
Stock Option (Right to Buy) Direct	Common Stock466.10K shares	11/4/2025	A · Award	+466.10K	4.53	—	466.10K
Stock Option (Right to Buy) Direct	Common Stock275K shares	11/4/2025	D · Disposition	−275K	15.25	—	0.00
Stock Option (Right to Buy) Direct	Common Stock275K shares	11/4/2025	A · Award	+275K	4.53	—	275K
Stock Option (Right to Buy) Direct	Common Stock300K shares	11/4/2025	D · Disposition	−300K	16.62	—	0.00
Stock Option (Right to Buy) Direct	Common Stock300K shares	11/4/2025	A · Award	+300K	4.53	—	300K