# Attralus funding: rounds and investors

> Attralus has raised $56M across 1 round since 2024. Investors include Janus Henderson Investors, Vivo Capital and Redmile Group. Every round with its source.

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

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

# Who invested in *Attralus*

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.

Pharma

Funding summary Updated 26 Oct 2026

**$56M** raised across 1 round since 2024, from 1 source

- **Latest round:** Series B, $56M Feb 2024
- **Investors:** 4

See who backed them

## The rounds

- **Feb 2024** Series B **$56M** [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) [Vivo Capital](https://millionrounds.com/fund/vivo-capital) [Redmile Group](https://millionrounds.com/fund/redmile-group) [Samsara BioCapital](https://millionrounds.com/fund/samsara-biocapital) Source recorded SEC filing: $56M sold, first sale Jan 2024

## Founders and team

From Attralus's own website and the SEC filings it signed: 8 on the team.

- **Glen Firestone** President, Chief Business Officer
- **Mark Timney** Chief Executive Officer
- **Karen Robertson** Vice President, Regulatory Affairs
- **James Testa** Vice President, Finance
- **Christine Huh** Head Of Human Resources
- **Gregory Bell** Executive Officer i
- **Mehdi Khodadad** Executive Officer i
- **Spencer Guthrie** Executive Officer i

On the board, as filed i *Alex Denner* *Corey Goodman* *Jake Bauer* *Nancy Miller-Rich* *Rahul Kakkar* *Richard Gaster*

## Everyone who backed them

[Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) Private equity **1** round

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

[Redmile Group](https://millionrounds.com/fund/redmile-group) VC firm **1** round

[Samsara BioCapital](https://millionrounds.com/fund/samsara-biocapital) VC firm **1** round

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

## Also claim to have backed them

These 2 firms list Attralus as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.

[Alpha Wave Global](https://millionrounds.com/fund/alpha-wave-global) Private equity Per its own site

[Yarrow Capital](https://millionrounds.com/fund/yarrow-capital) VC firm Per its own site

## Quick answers about Attralus

### Who invested in Attralus?

Attralus's investors include Janus Henderson Investors, Vivo Capital, Redmile Group and Samsara BioCapital.

### How much has Attralus raised?

Attralus has raised $56M across 1 round since 2024.

### When did Attralus last raise?

Attralus's most recent round was a Series B of $56M in Feb 2024.

### What was Attralus's biggest round?

Its most recent round, $56M in Feb 2024, is also its largest on record.

### Who backed Attralus first?

Attralus's first round on record, in Feb 2024, was backed by Janus Henderson Investors, Vivo Capital and Redmile Group and 1 others.

### What stage is Attralus at?

Attralus's latest named round is a Series B, in Feb 2024.

### Where is Attralus based?

Attralus is based in the United States.

## Companies like Attralus

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

[**Matchpoint Therapeutics** $220M · Oct 2026](https://millionrounds.com/company/matchpoint-therapeutics)[**Rx Bandz** Oct 2026](https://millionrounds.com/company/rx-bandz)[**Hera Biotech** $1.8M · Sept 2026](https://millionrounds.com/company/hera-biotech)[**GevRx Nutraceuticals** $300K · Sept 2026](https://millionrounds.com/company/gevrx-nutraceuticals)[**RegCell** $81M · Sept 2026](https://millionrounds.com/company/regcell)[**ClearSight Therapeutics** $307K · Sept 2026](https://millionrounds.com/company/clearsight-therapeutics)

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