# Third Arc Bio funding: rounds and investors

> Third Arc Bio has raised $52M across 1 round since 2026. Investors include Andreessen Horowitz, Hill House Capital and Janus Henderson Investors.

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

United States · [Series A startup](https://millionrounds.com/companies)

# Who invested in *Third Arc Bio*

One round we have observed, with the 5 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

Raised 9 months ago

Funding summary Updated 26 Oct 2026

**$52M** raised across 1 round since 2026, from 1 source

- **Latest round:** Series A, $52M Feb 2026
- **Investors:** 5

See who backed them

## The rounds

- **Feb 2026** Series A **$52M** [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) [Hill House Capital](https://millionrounds.com/fund/hill-house-capital) [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) [Cormorant Asset Management](https://millionrounds.com/fund/cormorant-asset-management) [Foresite Capital](https://millionrounds.com/fund/forsite-capital) Source recorded

## Founders and team

From Third Arc Bio's own website: 4 on the team.

- **Jen Teti** Senior Vice President, Clinical Operations
- **Matt Sheroff** Vice President, Corporate and Business Development
- **Tom Evans** Senior Vice President, Finance
- **Debi Watson** Chief Business and Operations Officer

## Everyone who backed them

[Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) VC firm **1** round

[Hill House Capital](https://millionrounds.com/fund/hill-house-capital) Family office **1** round

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

[Cormorant Asset Management](https://millionrounds.com/fund/cormorant-asset-management) Private equity **1** round

[Foresite Capital](https://millionrounds.com/fund/forsite-capital) Private equity **1** round

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

## Also claim to have backed them

This firm lists Third Arc Bio as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

[Vida Ventures](https://millionrounds.com/fund/vida-ventures-llc) VC firm Per its own site

## Quick answers about Third Arc Bio

### Who invested in Third Arc Bio?

Third Arc Bio's investors include Andreessen Horowitz, Hill House Capital, Janus Henderson Investors, Cormorant Asset Management and Foresite Capital.

### How much has Third Arc Bio raised?

Third Arc Bio has raised $52M across 1 round since 2026.

### When did Third Arc Bio last raise?

Third Arc Bio's most recent round was a Series A of $52M in Feb 2026.

### What was Third Arc Bio's biggest round?

Its most recent round, $52M in Feb 2026, is also its largest on record.

### Who backed Third Arc Bio first?

Third Arc Bio's first round on record, in Feb 2026, was backed by Andreessen Horowitz, Hill House Capital and Janus Henderson Investors and 2 others.

### What stage is Third Arc Bio at?

Third Arc Bio's latest named round is a Series A, in Feb 2026.

### Where is Third Arc Bio based?

Third Arc Bio is based in the United States.

## Companies like Third Arc Bio

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

[**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**Prolific Machines** $105M · Oct 2026](https://millionrounds.com/company/prolific-machines)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio)[**Clinical Ink** $24M · Oct 2026](https://millionrounds.com/company/clinical-ink)[**Rejuvenate Bio** $13M · Oct 2026](https://millionrounds.com/company/rejuvenate-bio)

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