# Arranta Bio funding: rounds and investors

> Arranta Bio has raised $82M across 1 round since 2019. Investors include Ampersand Capital Partners. Every round with its source.

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

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

# Who invested in *Arranta 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 Healthcare

Funding summary Updated 26 Oct 2026

**$82M** raised across 1 round since 2019, from 1 source

- **Latest round:** Round, $82M Oct 2019
- **Investors:** 1

See who backed them

## The rounds

- **Oct 2019** Round **$82M** [Ampersand Capital Partners](https://millionrounds.com/fund/ampersand-capital-partners) Reported by FinSMEs

## Everyone who backed them

[Ampersand Capital Partners](https://millionrounds.com/fund/ampersand-capital-partners) Private equity **1** round

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

## Quick answers about Arranta Bio

### Who invested in Arranta Bio?

Arranta Bio's investors include Ampersand Capital Partners.

### How much has Arranta Bio raised?

Arranta Bio has raised $82M across 1 round since 2019.

### When did Arranta Bio last raise?

Arranta Bio's most recent round was an Undisclosed round of $82M in Oct 2019.

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

Its most recent round, $82M in Oct 2019, is also its largest on record.

### Who backed Arranta Bio first?

Arranta Bio's first round on record, in Oct 2019, was backed by Ampersand Capital Partners.

### What stage is Arranta Bio at?

Arranta Bio's latest named round is an Undisclosed round, in Oct 2019.

### Where is Arranta Bio based?

Arranta Bio is based in the United States.

## Companies like Arranta Bio

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)[**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)

## 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