PepGen Inc. (PEPG)
Nasdaq: PEPG · Pharmaceutical Preparations · Boston, MA · filing with the SEC since 2020
Who owns PepGen Inc.
As filed with the SECHolders of 5% or more
4
RA Capital Management, L.P. holds 29.2% of Common stock, par value $0.0001 per share, as its SCHEDULE 13D/A filed Sep 30, 2025 says.
Directors and officers
17
report now, of 23 people on the record since 2022. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 4 named at left.
Holders of 5% or moreshare of the class, as filed
RA Capital Management, L.P.
SCHEDULE 13D/A · filed Sep 30, 2025 · Common stock, par value $0.0001 per share
Oxford Science Enterprises plc
SCHEDULE 13G/A · filed Oct 1, 2025 · Common Stock, $0.0001 par value per share
Commodore Capital LP
SCHEDULE 13G/A · filed May 15, 2026 · Common stock, par value $0.0001 per share · 5.1% in Mar 11, 2026
Viking Global Investors LP
SCHEDULE 13G/A · filed May 15, 2026 · Common Stock, par value $0.0001 per share · 5.1% in Oct 3, 2025
Point72 Asset Management, L.P.
SCHEDULE 13G/A · filed Nov 14, 2025 · Common Stock, par value $0.0001 per share · reported falling below 5%, from 8.2% in May 15, 2025
Janus Henderson Group PLC
SCHEDULE 13G/A · filed Feb 14, 2025 · Common Stock · reported falling below 5%
Suvretta Capital Management, LLC
SCHEDULE 13G/A · filed Aug 13, 2025 · Common Stock, par value $0.0001 per share · reported falling below 5%, from 5.1% in Feb 7, 2025
RTW Investments, LP
SCHEDULE 13G/A · filed May 15, 2025 · Common Stock, $0.0001 par value per share · reported falling below 5%, from 9.8% in Feb 14, 2025
What PEPG reports owning in othersstakes of 5% or more, and other ties
1 subsidiary in 1 country, from the list filed with the 10-K filed Feb 24, 2025.
Insider tradesForm 4
7sales
0purchases
0sales on a scheduled plan
4people selling
$100,000sold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Sep 30, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window5 of 30 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Oxford Science Enterprises PLC | 10% owner | 0 | $0 | 0 | 1 | $600,000 |
| Mcarthur James G | President and CEO | 2 | $0 | 0 | 0 | $0 |
| Donnelly Noel | Chief Financial Officer | 2 | $0 | 0 | 0 | $0 |
| Kasraian Kasra | Chief Technical Officer | 1 | $0 | 0 | 0 | $0 |
| Streck Paul | EVP, Head of R&D | 2 | $0 | 0 | 0 | $0 |