# Neion Bio funding: rounds and investors

> Neion Bio has raised $23M across 1 round since 2026. Investors include Haystack, Caffeinated Capital and Basis Set Ventures. Every round with its source.

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

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

# Who invested in *Neion Bio*

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 B2B

Raised 5 months ago

Funding summary Updated 26 Oct 2026

**$23M** raised across 1 round since 2026, from 1 source

- **Latest round:** Series A, $23M Jun 2026
- **Investors:** 4

See who backed them

## The rounds

- **Jun 2026** Series A **$23M** [Haystack](https://millionrounds.com/fund/haystack) [Caffeinated Capital](https://millionrounds.com/fund/caffeinated-capital) [Basis Set Ventures](https://millionrounds.com/fund/basis-set-ventures) [Digitalis Ventures](https://millionrounds.com/fund/digitalis-ventures) Source recorded

## Founders and team

From Neion Bio's own website: 1 founder, 6 on the team.

**Dimi Kellari** Co-Founder & CEO

- **Tom Bayoumi** Head of Strategy & Finance
- **Emily Hoelzli** Research Associate
- **Lea Radomsky** Research Associate
- **Melanie Yunga** Veterinary Research Associate
- **Rachel Somavarapu** Research Associate
- **Shivani Patel** Research Associate

## Everyone who backed them

[Haystack](https://millionrounds.com/fund/haystack) VC firm **1** round

[Caffeinated Capital](https://millionrounds.com/fund/caffeinated-capital) VC firm **1** round

[Basis Set Ventures](https://millionrounds.com/fund/basis-set-ventures) VC firm **1** round

[Digitalis Ventures](https://millionrounds.com/fund/digitalis-ventures) VC firm **1** round

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

## Also claim to have backed them

This firm lists Neion Bio as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

[Hawktail](https://millionrounds.com/fund/hawktail) VC firm Per its own site

## Quick answers about Neion Bio

### Who invested in Neion Bio?

Neion Bio's investors include Haystack, Caffeinated Capital, Basis Set Ventures and Digitalis Ventures.

### How much has Neion Bio raised?

Neion Bio has raised $23M across 1 round since 2026.

### When did Neion Bio last raise?

Neion Bio's most recent round was a Series A of $23M in Jun 2026.

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

Its most recent round, $23M in Jun 2026, is also its largest on record.

### Who backed Neion Bio first?

Neion Bio's first round on record, in Jun 2026, was backed by Haystack, Caffeinated Capital and Basis Set Ventures and 1 others.

### What stage is Neion Bio at?

Neion Bio's latest named round is a Series A, in Jun 2026.

### Where is Neion Bio based?

Neion Bio is based in the United States.

## Companies like Neion Bio

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

[**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**Prolific Machines** $105M · Oct 2026](https://millionrounds.com/company/prolific-machines)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**MURAL** $67M · Oct 2026](https://millionrounds.com/company/mural)[**Different** $48M · Oct 2026](https://millionrounds.com/company/different)[**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