# Epirium Bio funding: rounds and investors

> Epirium Bio has raised $85M across 1 round since 2019. Investors include ARCH Venture Partners, Adams Street Partners and Longitude Capital.

Source: https://millionrounds.com/company/epirium-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 *Epirium Bio*

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 Healthcare

Funding summary Updated 26 Oct 2026

**$85M** raised across 1 round since 2019, from 1 source

- **Latest round:** Series A, $85M Dec 2019
- **Investors:** 6

See who backed them

## The rounds

- **Dec 2019** Series A **$85M** [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) [Adams Street Partners](https://millionrounds.com/fund/adams-street-partners) [Longitude Capital](https://millionrounds.com/fund/longitude-capital) [The Longevity Fund](https://millionrounds.com/fund/the-longevity-fund) [Vertex Ventures HC](https://millionrounds.com/fund/vertex-ventures-hc) Bluebird Ventures Reported by Startuparound

## Founders and team

From Epirium Bio's own website: 2 on the team.

- **Alexander Casdin** Chief Executive Officer
- **Russell J. Cox** Executive Chairman

## Everyone who backed them

[ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) VC firm **1** round

[Adams Street Partners](https://millionrounds.com/fund/adams-street-partners) VC firm **1** round

[Longitude Capital](https://millionrounds.com/fund/longitude-capital) VC firm **1** round

[The Longevity Fund](https://millionrounds.com/fund/the-longevity-fund) VC firm **1** round

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

Bluebird Ventures no record of our own yet **1** round

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

## Also claim to have backed them

This firm lists Epirium 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.

[Longview Ventures](https://millionrounds.com/fund/broadview-ventures-inc) VC firm Per its own site

## Quick answers about Epirium Bio

### Who invested in Epirium Bio?

Epirium Bio's investors include ARCH Venture Partners, Adams Street Partners, Longitude Capital, The Longevity Fund and Vertex Ventures HC, and 1 more on record.

### How much has Epirium Bio raised?

Epirium Bio has raised $85M across 1 round since 2019.

### When did Epirium Bio last raise?

Epirium Bio's most recent round was a Series A of $85M in Dec 2019.

### What was Epirium Bio's biggest round?

Its most recent round, $85M in Dec 2019, is also its largest on record.

### Who backed Epirium Bio first?

Epirium Bio's first round on record, in Dec 2019, was backed by ARCH Venture Partners, Adams Street Partners and Longitude Capital and 3 others.

### What stage is Epirium Bio at?

Epirium Bio's latest named round is a Series A, in Dec 2019.

### Where is Epirium Bio based?

Epirium Bio is based in the United States.

## Companies like Epirium 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)[**AI** $18M · Oct 2026](https://millionrounds.com/company/ai)[**Baba** $40M · Oct 2026](https://millionrounds.com/company/baba)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio)

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