# Tourmaline Bio funding: rounds and investors

> Tourmaline Bio has raised $173M across 1 round since 2024. Investors include Qiming Venture Partners, RA Capital Management and Vivo Capital.

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

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

# Who invested in *Tourmaline Bio*

One round we have observed, with the 5 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

Funding summary Updated 26 Oct 2026

**$173M** raised across 1 round since 2024, from 1 source

- **Latest round:** Round, $173M Jan 2024
- **Investors:** 5

See who backed them

## The rounds

- **Jan 2024** Round **$173M** [Qiming Venture Partners](https://millionrounds.com/fund/qiming-venture-partners) [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Vivo Capital](https://millionrounds.com/fund/vivo-capital) [TCG](https://millionrounds.com/fund/tcg) [TCG Crossover](https://millionrounds.com/fund/tcg-crossover) Source recorded

## Everyone who backed them

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

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

[Vivo Capital](https://millionrounds.com/fund/vivo-capital) 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=tourmaline-bio).

## Also claim to have backed them

This firm lists Tourmaline 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.

[Longitude Capital](https://millionrounds.com/fund/longitude-capital) VC firm Per its own site

## Quick answers about Tourmaline Bio

### Who invested in Tourmaline Bio?

Tourmaline Bio's investors include Qiming Venture Partners, RA Capital Management, Vivo Capital, TCG and TCG Crossover.

### How much has Tourmaline Bio raised?

Tourmaline Bio has raised $173M across 1 round since 2024.

### When did Tourmaline Bio last raise?

Tourmaline Bio's most recent round was an Undisclosed round of $173M in Jan 2024.

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

Its most recent round, $173M in Jan 2024, is also its largest on record.

### Who backed Tourmaline Bio first?

Tourmaline Bio's first round on record, in Jan 2024, was backed by Qiming Venture Partners, RA Capital Management and Vivo Capital and 2 others.

### What stage is Tourmaline Bio at?

Tourmaline Bio's latest named round is an Undisclosed round, in Jan 2024.

### Where is Tourmaline Bio based?

Tourmaline Bio is based in the United States.

## Companies like Tourmaline 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)

## Find investors like these

Search every investor by what they have actually funded, then narrow to your stage and market. Free.

Open the investor searchOr these rounds in the app