# Tolerance Bio funding: rounds and investors

> Tolerance Bio has raised $20M across 2 rounds since 2024. Investors include U.S. Venture Partners. Every round with its source.

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

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

# Who invested in *Tolerance Bio*

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.

Biotech

Raised 5 months ago

Funding summary Updated 26 Oct 2026

**$20M** raised across 2 rounds since 2024, from 2 sources

- **Latest round:** Venture Jun 2026
- **Biggest round:** $20M Seed · Oct 2024
- **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.

2025 2026

**$20M** Seed

**?** Venture

- **First round:** Seed, $20M
- **Biggest round:** $20M
- **Between rounds:** 20 months

## The rounds

- **Jun 2026** Venture **Amount undisclosed** *1 returning* [U.S. Venture Partners](https://millionrounds.com/fund/u-s-venture-partners-usvp) Source recorded
- **Oct 2024** Seed **$20M** *1 new* [U.S. Venture Partners](https://millionrounds.com/fund/u-s-venture-partners-usvp) Source recorded

## Everyone who backed them

[U.S. Venture Partners](https://millionrounds.com/fund/u-s-venture-partners-usvp) VC firm **2** rounds

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

## Also claim to have backed them

This firm lists Tolerance 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.

[Criteria Bio Ventures](https://millionrounds.com/fund/criteria-bio-ventures) Corporate VC Per its own site

## Quick answers about Tolerance Bio

### Who invested in Tolerance Bio?

Tolerance Bio's investors include U.S. Venture Partners.

### How much has Tolerance Bio raised?

Tolerance Bio has raised $20M across 2 rounds since 2024. One round did not disclose an amount, so the total is a floor.

### When did Tolerance Bio last raise?

Tolerance Bio's most recent round was a Venture in Jun 2026.

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

Tolerance Bio's largest round on record is $20M (Seed), in Oct 2024.

### Who backed Tolerance Bio first?

Tolerance Bio's first round on record, in Oct 2024, was backed by U.S. Venture Partners.

### What stage is Tolerance Bio at?

Tolerance Bio's latest named round is a Venture, in Jun 2026.

### Where is Tolerance Bio based?

Tolerance Bio is based in the United States.

## Companies like Tolerance 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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