# Arranta Bio

> Arranta Bio is a VC fund in Watertown. See 1 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: Watertown, United States
- Total investments: 1
- Last investment: Mar 2023
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/company/arranta-bio
- Website: http://arrantabio.com/
- Facebook: https://www.facebook.com/ArrantaBio/

Arranta Bio is a VC fund in Watertown. Arranta Bio was formed in May 2019 with the vision to be the best-in-class microbiome CDMO, developing and manufacturing live biotherapeutic products (LBPs) for pioneers targeting diseases linked to the microbiome, using bacterial fermentation, isolation, drying and encapsulation. In October 2019, we completed an $82,000,000 funding round with soleinstitutional investor, Ampersand Capital, company founders and colleagues, and a strategic investment from Thermo Fisher Scientific.

## Contacts

5 contacts available for Arranta Bio. Shizune tracks 2 team members at Arranta Bio. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/arranta-bio?utm_source=investor_profile

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Aaron Cowley | Chief Scientific Officer | 0 | — |
| David Stevens | Chief Executive Officer (CEO) | 0 | — |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Thymmune Therapeutics | Thymmune Therapeutics is a biotechnology company developing a machine learning-driven thymic cell engineering platform to restore normal immune function in aging and disease. | $7M | Seed | Mar 01, 2023 |  |

1 of 1 investments shown.

## Co-investors
- [NYBC Ventures](https://shizune.co/investors/profile/nybc-ventures) — VC Fund, 1 deal together
- [Pillar VC](https://shizune.co/investors/profile/pillar-companies-2) — VC Fund, 1 deal together

## FAQ

### How do I contact Arranta Bio?

Public channels for Arranta Bio include LinkedIn, the website linked on this profile and Facebook. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### Who are the partners at Arranta Bio?

The team at Arranta Bio includes Aaron Cowley (Chief Scientific Officer) and David Stevens (Chief Executive Officer (CEO)). The Team section lists each member with their title, investment count and links.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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