# Synthesize Bio funding: rounds and investors

> Synthesize Bio has raised $10M across 1 round since 2025. Investors include Madrona Venture Group. Every round with its source.

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

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

# Who invested in *Synthesize Bio*

One round we have observed, with the one investor 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 Genomics

Funding summary Updated 26 Oct 2026

**$10M** raised across 1 round since 2025, from 1 source

- **Latest round:** Seed, $10M Sept 2025
- **Investors:** 1

See who backed them

## The rounds

- **Sept 2025** Seed **$10M** [Madrona Venture Group](https://millionrounds.com/fund/madrona) Source recorded

## Everyone who backed them

[Madrona Venture Group](https://millionrounds.com/fund/madrona) VC firm **1** round

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

## Quick answers about Synthesize Bio

### Who invested in Synthesize Bio?

Synthesize Bio's investors include Madrona Venture Group.

### How much has Synthesize Bio raised?

Synthesize Bio has raised $10M across 1 round since 2025.

### When did Synthesize Bio last raise?

Synthesize Bio's most recent round was a Seed of $10M in Sept 2025.

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

Its most recent round, $10M in Sept 2025, is also its largest on record.

### Who backed Synthesize Bio first?

Synthesize Bio's first round on record, in Sept 2025, was backed by Madrona Venture Group.

### What stage is Synthesize Bio at?

Synthesize Bio's latest named round is a Seed, in Sept 2025.

### Where is Synthesize Bio based?

Synthesize Bio is based in the United States.

## Companies like Synthesize Bio

In the same sector, and raised in the last eighteen months.

[**Amogy** $125M · Oct 2026](https://millionrounds.com/company/amogy)[**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**Prolific Machines** $105M · Oct 2026](https://millionrounds.com/company/prolific-machines)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio)[**Clinical Ink** $24M · Oct 2026](https://millionrounds.com/company/clinical-ink)

## 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