McArthur James G

Director at Enliven Therapeutics, Inc. · on record since Mar 16, 2020
Director at Nightstar Therapeutics plc · on record since Jan 29, 2019
Director at PepGen Inc. · on record since May 10, 2022
President and CEO at PepGen Inc. · on record since May 10, 2022

Insider trading activity of McArthur James G

Transactions on record: 46; since Jan 29, 2019

Open-market buys: 3; $68.4K

Open-market sells: 7; $538.3K

Companies traded: 3; last filing Mar 6, 2026

Figures computed from official regulatory filings — .

Companies where McArthur James G has traded

PepGen Inc.41 tx · $691.4K · Mar 6, 2026
Enliven Therapeutics, Inc.1 tx · Mar 16, 2020
Nightstar Therapeutics plc4 tx · $1.4M · Jun 7, 2019

Track record of McArthur James G

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of McArthur James G

Co-insiders of McArthur James G

Kolchinsky PeterEnliven Therapeutics, Inc. +1
MOTT DAVID MEnliven Therapeutics, Inc. +1
RA CAPITAL MANAGEMENT, LLCEnliven Therapeutics, Inc. +1
Shah Rajeev M.Enliven Therapeutics, Inc. +1
5AM Opportunities I (GP), LLCEnliven Therapeutics, Inc.
5AM Opportunities I, L.P.Enliven Therapeutics, Inc.
5AM Ventures VI, L.P.Enliven Therapeutics, Inc.
Agger Mette KirstineEnliven Therapeutics, Inc.
Alexandria Venture Investments, LLCEnliven Therapeutics, Inc.
Arix Bioscience plcEnliven Therapeutics, Inc.
Ashton ChristopherPepGen Inc.
Attie KennethEnliven Therapeutics, Inc.
Ballal Rahul D.Enliven Therapeutics, Inc.
BASKETT FORESTEnliven Therapeutics, Inc.
Bauer JakeEnliven Therapeutics, Inc.

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
PepGen Inc.Listing on record	Mar 6, 2026	Sell	-131	6.33 USD	$829.2		SEC
PepGen Inc.Listing on record	Mar 6, 2026	Sell	-5,144	6.23 USD	$32K		SEC
PepGen Inc.Listing on record	Mar 2, 2026	AwardD (derivative)	731,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Mar 2, 2026	Award	187,688	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	OtherD (derivative)	-275,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	OtherD (derivative)	-352,705	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	AwardD (derivative)	466,095	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	AwardD (derivative)	300,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	OtherD (derivative)	-300,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	OtherD (derivative)	-40,815	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	OtherD (derivative)	-466,095	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	AwardD (derivative)	275,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	AwardD (derivative)	40,815	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	OtherD (derivative)	-40,815	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	OtherD (derivative)	-40,815	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	AwardD (derivative)	352,705	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	AwardD (derivative)	40,815	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	AwardD (derivative)	40,815	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Apr 22, 2025	Buy	10,000	1.36 USD	$13.6K	conv 56	SEC
PepGen Inc.Listing on record	Apr 9, 2025	Buy	41,500	1.15 USD	$47.7K	conv 83First in 12mo	SEC
PepGen Inc.Listing on record	Mar 5, 2025	AwardD (derivative)	271,875	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Mar 5, 2025	Award	60,719	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Mar 1, 2024	AwardD (derivative)	300,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 5, 2023	Buy	1,694	4.17 USD	$7.1K	conv 96First in 12mo	SEC
PepGen Inc.Listing on record	Jun 9, 2023	Sell	-2,381	16.04 USD	$38.2K		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
PepGen Inc.Listing on record	Mar 6, 2026	Sell	-131	6.33 USD	$829.2		SEC
PepGen Inc.Listing on record	Mar 6, 2026	Sell	-5,144	6.23 USD	$32K		SEC
PepGen Inc.Listing on record	Mar 2, 2026	AwardD (derivative)	731,250	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Mar 2, 2026	Award	187,688	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	OtherD (derivative)	-275,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	OtherD (derivative)	-352,705	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	AwardD (derivative)	466,095	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	AwardD (derivative)	300,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	OtherD (derivative)	-300,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	OtherD (derivative)	-40,815	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	OtherD (derivative)	-466,095	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	AwardD (derivative)	275,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	AwardD (derivative)	40,815	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	OtherD (derivative)	-40,815	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	OtherD (derivative)	-40,815	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	AwardD (derivative)	352,705	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	AwardD (derivative)	40,815	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 18, 2025	AwardD (derivative)	40,815	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Apr 22, 2025	Buy	10,000	1.36 USD	$13.6K	conv 56	SEC
PepGen Inc.Listing on record	Apr 9, 2025	Buy	41,500	1.15 USD	$47.7K	conv 83First in 12mo	SEC
PepGen Inc.Listing on record	Mar 5, 2025	AwardD (derivative)	271,875	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Mar 5, 2025	Award	60,719	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Mar 1, 2024	AwardD (derivative)	300,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PepGen Inc.Listing on record	Dec 5, 2023	Buy	1,694	4.17 USD	$7.1K	conv 96First in 12mo	SEC
PepGen Inc.Listing on record	Jun 9, 2023	Sell	-2,381	16.04 USD	$38.2K		SEC