# Ollin Biosciences funding: rounds and investors

> Ollin Biosciences has raised $430M across 2 rounds since 2025. Investors include ARCH Venture Partners, Mubadala and RA Capital Management.

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

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

# Who invested in *Ollin Biosciences*

2 rounds we have observed, with the 5 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Pharma

Raised 5 months ago

Funding summary Updated 26 Oct 2026

**$430M** raised across 2 rounds since 2025, from 2 sources

**$100M** Series A **$330M** Series B

- **Latest round:** Series B, $330M Jun 2026
- **Step-up i:** 3.3×
- **Investors:** 5

See who backed them

## The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2026

**$100M** Series A

**$330M** Series B

- **First round:** Series A, $100M
- **Biggest round:** $330M
- **Between rounds:** 9 months

## The rounds

- **Jun 2026** Series B **$330M** *3 new* *2 returning* [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) [TCG](https://millionrounds.com/fund/tcg) [Mubadala](https://millionrounds.com/fund/mubadala) [TCG Crossover](https://millionrounds.com/fund/tcg-crossover) Source recorded SEC filing: $156M sold
- **Sept 2025** Series A **$100M** *2 new* [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) [Mubadala](https://millionrounds.com/fund/mubadala) Source recorded

## Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

**Series A** 2025 **Series B** 2026 [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) [Mubadala](https://millionrounds.com/fund/mubadala) [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [TCG](https://millionrounds.com/fund/tcg) [TCG Crossover](https://millionrounds.com/fund/tcg-crossover)

## Everyone who backed them

[ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) VC firm **2** rounds

[Mubadala](https://millionrounds.com/fund/mubadala) Private equity **2** rounds

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

[TCG](https://millionrounds.com/fund/tcg) Private equity **1** round

[TCG Crossover](https://millionrounds.com/fund/tcg-crossover) VC firm **1** round

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

## Quick answers about Ollin Biosciences

### Who invested in Ollin Biosciences?

Ollin Biosciences's investors include ARCH Venture Partners, Mubadala, RA Capital Management, TCG and TCG Crossover.

### How much has Ollin Biosciences raised?

Ollin Biosciences has raised $430M across 2 rounds since 2025.

### When did Ollin Biosciences last raise?

Ollin Biosciences's most recent round was a Series B of $330M in Jun 2026.

### What was Ollin Biosciences's biggest round?

Its most recent round, $330M in Jun 2026, is also its largest on record.

### Who backed Ollin Biosciences first?

Ollin Biosciences's first round on record, in Sept 2025, was backed by ARCH Venture Partners and Mubadala.

### What stage is Ollin Biosciences at?

Ollin Biosciences's latest named round is a Series B, in Jun 2026.

### Where is Ollin Biosciences based?

Ollin Biosciences is based in the United States.

## Companies like Ollin Biosciences

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

[**Matchpoint Therapeutics** $220M · Oct 2026](https://millionrounds.com/company/matchpoint-therapeutics)[**Rx Bandz** Oct 2026](https://millionrounds.com/company/rx-bandz)[**Hera Biotech** $1.8M · Sept 2026](https://millionrounds.com/company/hera-biotech)[**GevRx Nutraceuticals** $300K · Sept 2026](https://millionrounds.com/company/gevrx-nutraceuticals)[**RegCell** $81M · Sept 2026](https://millionrounds.com/company/regcell)[**ClearSight Therapeutics** $307K · Sept 2026](https://millionrounds.com/company/clearsight-therapeutics)

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