# Outer Biosciences funding: rounds and investors

> Outer Biosciences has raised $23M across 2 rounds since 2023. Investors include Liquid 2 Ventures. Every round with its source.

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

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

# Who invested in *Outer Biosciences*

2 rounds we have observed, with the one investor 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.

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Biotech

Raised 2 months ago

Funding summary Updated 27 Oct 2026

**$23M** raised across 2 rounds since 2023, from 2 sources

- **Latest round:** Round, $23M Aug 2026
- **Investors:** 1

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.

2023 2024 2025 2026

**?** Venture

**$23M** Round

- **First round:** Venture
- **Biggest round:** $23M
- **Between rounds:** 3.7 years

## The rounds

- **Aug 2026** Round **$23M** No investor was named in the report. Filed with the SEC (Form D); no report of this raise yet SEC filing: $23M sold, first sale Aug 2026
- **Jan 2023** Venture **Amount undisclosed** *1 new* [Liquid 2 Ventures](https://millionrounds.com/fund/liquid-2-ventures) Source recorded

## Everyone who backed them

[Liquid 2 Ventures](https://millionrounds.com/fund/liquid-2-ventures) VC firm **1** round

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

## Quick answers about Outer Biosciences

### Who invested in Outer Biosciences?

Outer Biosciences's investors include Liquid 2 Ventures.

### How much has Outer Biosciences raised?

Outer Biosciences has raised $23M across 2 rounds since 2023. One round did not disclose an amount, so the total is a floor.

### When did Outer Biosciences last raise?

Outer Biosciences's most recent round, $23M, was in Aug 2026.

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

Its most recent round, $23M in Aug 2026, is also its largest on record.

### Who backed Outer Biosciences first?

Outer Biosciences's first round on record, in Jan 2023, was backed by Liquid 2 Ventures.

### What stage is Outer Biosciences at?

Outer Biosciences's latest named round is a Venture, in Jan 2023.

### Where is Outer Biosciences based?

Outer Biosciences is based in the United States.

## Companies like Outer Biosciences

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

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

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