# Birch Biosciences funding: rounds and investors

> Birch Biosciences has raised $1.6M across 1 round since 2023. Investors include Y Combinator, National Science Foundation and Liquid 2 Ventures.

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

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

# Who invested in *Birch Biosciences*

One round we have observed, with the 4 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

Y Combinator: S22

Funding summary Updated 26 Oct 2026

**$1.6M** raised across 1 round since 2023, from 1 source

- **Latest round:** Grant, $1.6M Feb 2023
- **Investors:** 4

See who backed them

## The rounds

- **Feb 2023** Grant **$1.6M** [Y Combinator](https://millionrounds.com/fund/y-combinator) [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) [Liquid 2 Ventures](https://millionrounds.com/fund/liquid-2-ventures) [Pioneer Fund](https://millionrounds.com/fund/pioneer-fund-2) Source recorded

## Everyone who backed them

[Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **1** round

[National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) Government **1** round

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

[Pioneer Fund](https://millionrounds.com/fund/pioneer-fund-2) Private equity **1** round

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

## Also claim to have backed them

These 3 firms list Birch Biosciences as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.

[Collaborative Fund](https://millionrounds.com/fund/collaborative-fund) VC firm Per its own site

[Fundament](https://millionrounds.com/fund/fundament) Incubator Per its own site

[Integrity](https://millionrounds.com/fund/integrity) Accelerator Per its own site

## Quick answers about Birch Biosciences

### Who invested in Birch Biosciences?

Birch Biosciences's investors include Y Combinator, National Science Foundation, Liquid 2 Ventures and Pioneer Fund.

### How much has Birch Biosciences raised?

Birch Biosciences has raised $1.6M across 1 round since 2023.

### When did Birch Biosciences last raise?

Birch Biosciences's most recent round was a Grant of $1.6M in Feb 2023.

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

Its most recent round, $1.6M in Feb 2023, is also its largest on record.

### Who backed Birch Biosciences first?

Birch Biosciences's first round on record, in Feb 2023, was backed by Y Combinator, National Science Foundation and Liquid 2 Ventures and 1 others.

### What stage is Birch Biosciences at?

Birch Biosciences's latest named round is a Grant, in Feb 2023.

### Where is Birch Biosciences based?

Birch Biosciences is based in the United States.

## Companies like Birch Biosciences

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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