# i2o Therapeutics funding: rounds and investors

> i2o Therapeutics has raised $46M across 1 round since 2023. Investors include Sanofi. Every round with its source.

Source: https://millionrounds.com/company/i2o-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 *i2o 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

Funding summary Updated 26 Oct 2026

**$46M** raised across 1 round since 2023, from 1 source

- **Latest round:** Series A, $46M Aug 2023
- **Investors:** 1

See who backed them

## The rounds

- **Aug 2023** Series A **$46M** [Sanofi](https://millionrounds.com/fund/sanofi) Source recorded SEC filing: $3.5M sold, first sale Sept 2023

## Founders and team

From the SEC filings it signed: 1 on the team.

- **Kurt Graves** Chief Executive Officer i

On the board, as filed i *Anthony Aiudi* *Christopher Gagliardi*

## Everyone who backed them

[Sanofi](https://millionrounds.com/fund/sanofi) Investment firm **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=i2o-therapeutics).

## Quick answers about i2o Therapeutics

### Who invested in i2o Therapeutics?

i2o Therapeutics's investors include Sanofi.

### How much has i2o Therapeutics raised?

i2o Therapeutics has raised $46M across 1 round since 2023.

### When did i2o Therapeutics last raise?

i2o Therapeutics's most recent round was a Series A of $46M in Aug 2023.

### What was i2o Therapeutics's biggest round?

Its most recent round, $46M in Aug 2023, is also its largest on record.

### Who backed i2o Therapeutics first?

i2o Therapeutics's first round on record, in Aug 2023, was backed by Sanofi.

### What stage is i2o Therapeutics at?

i2o Therapeutics's latest named round is a Series A, in Aug 2023.

### Where is i2o Therapeutics based?

i2o Therapeutics is based in the United States.

## Companies like i2o 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)

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