# Addition Therapeutics funding: rounds and investors

> Addition Therapeutics has raised $100M across 1 round since 2025. Investors include SR One. Every round with its source.

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

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

# Who invested in *Addition Therapeutics*

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

Raised 11 months ago

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Funding summary Updated 27 Oct 2026

**$100M** raised across 1 round since 2025, from 1 source

- **Latest round:** Series A, $100M Dec 2025
- **Investors:** 1

See who backed them

## The rounds

- **Dec 2025** Series A **$100M** [SR One](https://millionrounds.com/fund/sr-one) Source recorded SEC filing: $28M sold, first sale Dec 2025

## Founders and team

From Addition Therapeutics's own website: 2 on the team.

- **Matthew R. Patterson** Chairman
- **Peter Bisgaard** Board Director

## Everyone who backed them

[SR One](https://millionrounds.com/fund/sr-one) Corporate VC **1** round

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

## Quick answers about Addition Therapeutics

### Who invested in Addition Therapeutics?

Addition Therapeutics's investors include SR One.

### How much has Addition Therapeutics raised?

Addition Therapeutics has raised $100M across 1 round since 2025.

### When did Addition Therapeutics last raise?

Addition Therapeutics's most recent round was a Series A of $100M in Dec 2025.

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

Its most recent round, $100M in Dec 2025, is also its largest on record.

### Who backed Addition Therapeutics first?

Addition Therapeutics's first round on record, in Dec 2025, was backed by SR One.

### What stage is Addition Therapeutics at?

Addition Therapeutics's latest named round is a Series A, in Dec 2025.

### Where is Addition Therapeutics based?

Addition Therapeutics is based in the United States.

## Companies like Addition 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)[**Rejuvenate Bio** $13M · Oct 2026](https://millionrounds.com/company/rejuvenate-bio)[**Clinical Ink** $24M · Oct 2026](https://millionrounds.com/company/clinical-ink)

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