# SAB Biotherapeutics funding: rounds and investors

> SAB Biotherapeutics has raised $85M across 1 round since 2026. Investors include RA Capital Management, Vivo Capital and Sanofi. Every round with its source.

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

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

# Who invested in *SAB Biotherapeutics*

One round we have observed, with the 4 investors 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 8 months ago

Funding summary Updated 26 Oct 2026

**$85M** raised across 1 round since 2026, from 1 source

- **Latest round:** Round, $85M Mar 2026
- **Investors:** 4

See who backed them

## The rounds

- **Mar 2026** Round **$85M** [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Vivo Capital](https://millionrounds.com/fund/vivo-capital) [Sanofi](https://millionrounds.com/fund/sanofi) [RTW Investments LLC](https://millionrounds.com/fund/rtw-investments-lp) Source recorded

## Everyone who backed them

[RA Capital Management](https://millionrounds.com/fund/ra-capital-management) Private equity **1** round

[Vivo Capital](https://millionrounds.com/fund/vivo-capital) Private equity **1** round

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

[RTW Investments LLC](https://millionrounds.com/fund/rtw-investments-lp) Growth equity **1** round

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

## Quick answers about SAB Biotherapeutics

### Who invested in SAB Biotherapeutics?

SAB Biotherapeutics's investors include RA Capital Management, Vivo Capital, Sanofi and RTW Investments LLC.

### How much has SAB Biotherapeutics raised?

SAB Biotherapeutics has raised $85M across 1 round since 2026.

### When did SAB Biotherapeutics last raise?

SAB Biotherapeutics's most recent round was an Undisclosed round of $85M in Mar 2026.

### What was SAB Biotherapeutics's biggest round?

Its most recent round, $85M in Mar 2026, is also its largest on record.

### Who backed SAB Biotherapeutics first?

SAB Biotherapeutics's first round on record, in Mar 2026, was backed by RA Capital Management, Vivo Capital and Sanofi and 1 others.

### What stage is SAB Biotherapeutics at?

SAB Biotherapeutics's latest named round is an Undisclosed round, in Mar 2026.

### Where is SAB Biotherapeutics based?

SAB Biotherapeutics is based in the United States.

## Companies like SAB Biotherapeutics

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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