# Pepgen funding: rounds and investors

> Pepgen has raised $115M across 1 round since 2025. Investors include RA Capital Management, Perceptive Advisors and Janus Henderson Investors.

Source: https://millionrounds.com/company/pepgen (Millionrounds; every figure on the page links to its filing or article)

United Kingdom · [Funded startup](https://millionrounds.com/companies)

# Who invested in *Pepgen*

One round we have observed, with the 6 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Biotech

Funding summary Updated 26 Oct 2026

**$115M** raised across 1 round since 2025, from 1 source

- **Latest round:** Round, $115M Sept 2025
- **Investors:** 6

See who backed them

## The rounds

- **Sept 2025** Round **$115M** [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Perceptive Advisors](https://millionrounds.com/fund/perceptive-advisors) [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) [Oxford Science Enterprises](https://millionrounds.com/fund/oxford-science-enterprises) [Samsara BioCapital](https://millionrounds.com/fund/samsara-biocapital) [Adage Capital Management](https://millionrounds.com/fund/adage-capital-management) Source recorded

## Founders and team

From Pepgen's own website: 6 on the team.

- **Rod Lozano** Vice President, Information Technology
- **Melissa Michaels** Executive Director, Head of Regulatory Affairs CMC
- **Habib Joseph Dable** Non-Executive Director
- **Heidi Henson** Non-Executive Director
- **Lisa Wyman** Non-Executive Director
- **Sarah Vacca** Executive Director, Clinical Operations

## Everyone who backed them

[RA Capital Management](https://millionrounds.com/fund/ra-capital-management) Private equity **1** round

[Perceptive Advisors](https://millionrounds.com/fund/perceptive-advisors) Asset manager **1** round

[Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) Private equity **1** round

[Oxford Science Enterprises](https://millionrounds.com/fund/oxford-science-enterprises) VC firm **1** round

[Samsara BioCapital](https://millionrounds.com/fund/samsara-biocapital) VC firm **1** round

[Adage Capital Management](https://millionrounds.com/fund/adage-capital-management) Asset manager **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=pepgen).

## Quick answers about Pepgen

### Who invested in Pepgen?

Pepgen's investors include RA Capital Management, Perceptive Advisors, Janus Henderson Investors, Oxford Science Enterprises and Samsara BioCapital, and 1 more on record.

### How much has Pepgen raised?

Pepgen has raised $115M across 1 round since 2025.

### When did Pepgen last raise?

Pepgen's most recent round was an Undisclosed round of $115M in Sept 2025.

### What was Pepgen's biggest round?

Its most recent round, $115M in Sept 2025, is also its largest on record.

### Who backed Pepgen first?

Pepgen's first round on record, in Sept 2025, was backed by RA Capital Management, Perceptive Advisors and Janus Henderson Investors and 3 others.

### What stage is Pepgen at?

Pepgen's latest named round is an Undisclosed round, in Sept 2025.

### Where is Pepgen based?

Pepgen is based in the United Kingdom.

## Companies like Pepgen

In the same sector, and raised in the last eighteen months.

[**HydRegen** $12M · Oct 2026](https://millionrounds.com/company/hydregen)[**OMass Therapeutics** $442M · Oct 2026](https://millionrounds.com/company/omass-therapeutics)[**CMR Surgical** $1.1B · Oct 2026](https://millionrounds.com/company/cmr-surgical)[**Living Optics** $61M · Oct 2026](https://millionrounds.com/company/living-optics)[**Bactobio** $18M · Oct 2026](https://millionrounds.com/company/bactobio)[**RHYTHM AI** $23M · Sept 2026](https://millionrounds.com/company/rhythm-ai)

## Find investors like these

Search every investor by what they have actually funded, then narrow to your stage and market. Free.

Open the investor searchOr these rounds in the app