# CrossBridge Bio funding: rounds and investors

> CrossBridge Bio has raised $25M across 2 rounds since 2024. Investors include Alexandria Venture Investments and Revent. Every round with its source.

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

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

# Who invested in *CrossBridge Bio*

2 rounds we have observed, with the 2 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

**$25M** raised across 2 rounds since 2024, from 2 sources

**$10M** Seed **$15M** Grant

- **Latest round:** Grant, $15M Nov 2025
- **Step-up i:** 1.5×
- **Investors:** 2

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

**$10M** Seed

**$15M** Grant

- **First round:** Seed, $10M
- **Biggest round:** $15M
- **Between rounds:** 12 months

## The rounds

- **Nov 2025** Grant **$15M** *1 new* *1 returning* [Alexandria Venture Investments](https://millionrounds.com/fund/alexandria-venture-investments) [Revent](https://millionrounds.com/fund/revent-2) Source recorded
- **Nov 2024** Seed **$10M** *1 new* [Alexandria Venture Investments](https://millionrounds.com/fund/alexandria-venture-investments) Source recorded SEC filing: $11M sold, first sale Oct 2024

## 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.

**Seed** 2024 **Grant** 2025 [Alexandria Venture Investments](https://millionrounds.com/fund/alexandria-venture-investments) [Revent](https://millionrounds.com/fund/revent-2)

## Everyone who backed them

[Alexandria Venture Investments](https://millionrounds.com/fund/alexandria-venture-investments) VC firm **2** rounds

[Revent](https://millionrounds.com/fund/revent-2) VC firm **1** round

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

## Also claim to have backed them

These 2 firms list CrossBridge Bio 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.

[Portal Innovations](https://millionrounds.com/fund/portal-innovations) VC firm Per its own site

[Linden Lake Labs, Inc.](https://millionrounds.com/fund/linden-lake-labs-inc) Venture studio Per its own site

## Quick answers about CrossBridge Bio

### Who invested in CrossBridge Bio?

CrossBridge Bio's investors include Alexandria Venture Investments and Revent.

### How much has CrossBridge Bio raised?

CrossBridge Bio has raised $25M across 2 rounds since 2024.

### When did CrossBridge Bio last raise?

CrossBridge Bio's most recent round was a Grant of $15M in Nov 2025.

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

Its most recent round, $15M in Nov 2025, is also its largest on record.

### Who backed CrossBridge Bio first?

CrossBridge Bio's first round on record, in Nov 2024, was backed by Alexandria Venture Investments.

### What stage is CrossBridge Bio at?

CrossBridge Bio's latest named round is a Grant, in Nov 2025.

### Where is CrossBridge Bio based?

CrossBridge Bio is based in the United States.

## Companies like CrossBridge 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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