# Palleon Pharmaceuticals funding: rounds and investors

> Palleon Pharmaceuticals has raised $100M across 1 round since 2020. Investors include Vertex Ventures, SR One and AbbVie. Every round with its source.

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

[Series B startup](https://millionrounds.com/companies)

# Who invested in *Palleon Pharmaceuticals*

One round we have observed, with the 3 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

**$100M** raised across 1 round since 2020, from 1 source

- **Latest round:** Series B, $100M Sept 2020
- **Investors:** 3

See who backed them

## The rounds

- **Sept 2020** Series B **$100M** [Vertex Ventures](https://millionrounds.com/fund/vertex-ventures) [SR One](https://millionrounds.com/fund/sr-one) [AbbVie](https://millionrounds.com/fund/abbvie) Source recorded SEC filing: $100M sold, first sale Sept 2020

## Founders and team

From the SEC filings it signed: 2 on the team.

- **James W. Broderick** Executive Officer, Director i
- **John W. Hennessy** Executive Officer i

On the board, as filed i *Eric W. Xiao* *Karan W. Takhar* *Rajeev W. Dadoo* *Stephen W. Hoffman* *William W. Burkoth*

## Everyone who backed them

[Vertex Ventures](https://millionrounds.com/fund/vertex-ventures) VC firm **1** round

[SR One](https://millionrounds.com/fund/sr-one) Corporate VC **1** round

[AbbVie](https://millionrounds.com/fund/abbvie) Corporate VC **1** round

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

## Quick answers about Palleon Pharmaceuticals

### Who invested in Palleon Pharmaceuticals?

Palleon Pharmaceuticals's investors include Vertex Ventures, SR One and AbbVie.

### How much has Palleon Pharmaceuticals raised?

Palleon Pharmaceuticals has raised $100M across 1 round since 2020.

### When did Palleon Pharmaceuticals last raise?

Palleon Pharmaceuticals's most recent round was a Series B of $100M in Sept 2020.

### What was Palleon Pharmaceuticals's biggest round?

Its most recent round, $100M in Sept 2020, is also its largest on record.

### Who backed Palleon Pharmaceuticals first?

Palleon Pharmaceuticals's first round on record, in Sept 2020, was backed by Vertex Ventures, SR One and AbbVie.

### What stage is Palleon Pharmaceuticals at?

Palleon Pharmaceuticals's latest named round is a Series B, in Sept 2020.

## Companies like Palleon Pharmaceuticals

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

[**Cloverleaf Bio** $33M · Sept 2026](https://millionrounds.com/company/cloverleaf-bio)[**Cheiron** $8.0M · Jul 2026](https://millionrounds.com/company/cheiron)[**Tavo Biotherapeutics** $17M · Jun 2026](https://millionrounds.com/company/tavo-biotherapeutics)[**Countable Labs** $26M · May 2026](https://millionrounds.com/company/countable-labs)[**Oricell Therapeutics** $180M · Apr 2026](https://millionrounds.com/company/oricell-therapeutics)[**Immunofoco** $29M · Mar 2026](https://millionrounds.com/company/immunofoco)

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