# Rubius Therapeutics funding: rounds and investors

> Rubius Therapeutics has raised $300M across 2 rounds since 2018. Investors include Flagship Pioneering. Every round with its source.

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

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

# Who invested in *Rubius Therapeutics*

2 rounds we have observed, with the one investor 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 Healthcare

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Funding summary Updated 27 Oct 2026

**$300M** raised across 2 rounds since 2018, from 2 sources

**$100M** Round **$200M** Round

- **Latest round:** Round, $200M Mar 2021
- **Step-up i:** 2×
- **Investors:** 1

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.

2018 2019 2020 2021

**$100M** Round

**$200M** Round

- **First round:** Round, $100M
- **Biggest round:** $200M
- **Between rounds:** 3 years

## The rounds

- **Mar 2021** Round **$200M** *1 new* [Flagship Pioneering](https://millionrounds.com/fund/flagship-pioneering) Source recorded
- **Mar 2018** Round **$100M** No investor was named in the report. Reported by FinSMEs SEC filing: $101M sold, first sale Feb 2018

## Founders and team

From the SEC filings it signed: 4 on the team.

- **Andrew B. Oh** Executive Officer i
- **Christopher L. Carpenter** Executive Officer i
- **Joanne Protano** Executive Officer i
- **Torben Straight Nissen** Executive Officer, Director i

On the board, as filed i *Catherine B. Sohn* *David Straight Epstein* *Francis B. Cuss* *Michael S. Rosenblatt* *Noubar B. Afeyan* *Robert S. Langer* *Roger S. Pomerantz*

## Everyone who backed them

[Flagship Pioneering](https://millionrounds.com/fund/flagship-pioneering) VC firm **1** round

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

## Quick answers about Rubius Therapeutics

### Who invested in Rubius Therapeutics?

Rubius Therapeutics's investors include Flagship Pioneering.

### How much has Rubius Therapeutics raised?

Rubius Therapeutics has raised $300M across 2 rounds since 2018.

### When did Rubius Therapeutics last raise?

Rubius Therapeutics's most recent round was an Undisclosed round of $200M in Mar 2021.

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

Its most recent round, $200M in Mar 2021, is also its largest on record.

### Who backed Rubius Therapeutics first?

Rubius Therapeutics's first round on record, in Mar 2021, was backed by Flagship Pioneering.

### What stage is Rubius Therapeutics at?

Rubius Therapeutics's latest named round is an Undisclosed round, in Mar 2021.

### Where is Rubius Therapeutics based?

Rubius Therapeutics is based in the United States.

## Companies like Rubius Therapeutics

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

[**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)[**AI** $18M · Oct 2026](https://millionrounds.com/company/ai)[**Baba** $40M · Oct 2026](https://millionrounds.com/company/baba)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio)

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