# Bambusa Therapeutics funding: rounds and investors

> Bambusa Therapeutics has raised $90M across 2 rounds since 2025. Investors include RA Capital Management, Janus Henderson Investors and Invus.

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

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

# Who invested in *Bambusa Therapeutics*

2 rounds we have observed, with the 4 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.

Biotech

Raised 12 months ago

Funding summary Updated 26 Oct 2026

**$90M** raised across 2 rounds since 2025, from 2 sources

- **Latest round:** Venture Nov 2025
- **Biggest round:** $90M Series A · Feb 2025
- **Investors:** 4

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

**$90M** Series A

**?** Venture

- **First round:** Series A, $90M
- **Biggest round:** $90M
- **Between rounds:** 9 months

## The rounds

- **Nov 2025** Venture **Amount undisclosed** *4 returning* [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) [Invus](https://millionrounds.com/fund/invus) [Redmile Group](https://millionrounds.com/fund/redmile-group) Source recorded
- **Feb 2025** Series A **$90M** *4 new* [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) [Invus](https://millionrounds.com/fund/invus) [Redmile Group](https://millionrounds.com/fund/redmile-group) Source recorded SEC filing: $9.0M sold, first sale Jun 2024

## Founders and team

From Bambusa Therapeutics's own website: 1 founder, 6 on the team.

**Helmut Jeggle** Co-Founder

- **Jen Salstrom** Vice President, Clinical Development
- **Crystal MacKay** Chief Operating Officer
- **Jon Lieber** Chief Financial Officer
- **Christian Foerster** Board Member
- **Derek DiRocco** Board Member
- **Mike Malynn** Director, Finance

Advisers *Looking Forward*

## 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 **Venture** 2025 [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) [Invus](https://millionrounds.com/fund/invus) [Redmile Group](https://millionrounds.com/fund/redmile-group)

## Everyone who backed them

[RA Capital Management](https://millionrounds.com/fund/ra-capital-management) Private equity **2** rounds

[Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) Private equity **2** rounds

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

[Redmile Group](https://millionrounds.com/fund/redmile-group) VC firm **2** rounds

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

## Quick answers about Bambusa Therapeutics

### Who invested in Bambusa Therapeutics?

Bambusa Therapeutics's investors include RA Capital Management, Janus Henderson Investors, Invus and Redmile Group.

### How much has Bambusa Therapeutics raised?

Bambusa Therapeutics has raised $90M across 2 rounds since 2025. One round did not disclose an amount, so the total is a floor.

### When did Bambusa Therapeutics last raise?

Bambusa Therapeutics's most recent round was a Venture in Nov 2025.

### What was Bambusa Therapeutics's biggest round?

Bambusa Therapeutics's largest round on record is $90M (Series A), in Feb 2025.

### Who backed Bambusa Therapeutics first?

Bambusa Therapeutics's first round on record, in Feb 2025, was backed by RA Capital Management, Janus Henderson Investors and Invus and 1 others.

### What stage is Bambusa Therapeutics at?

Bambusa Therapeutics's latest named round is a Venture, in Nov 2025.

### Where is Bambusa Therapeutics based?

Bambusa Therapeutics is based in the United States.

## Companies like Bambusa Therapeutics

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