# Haystack Oncology funding: rounds and investors

> Haystack Oncology has raised $56M across 1 round since 2022. Investors include Alexandria Venture Investments and Catalio Capital Management.

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

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

# Who invested in *Haystack Oncology*

One round we have observed, with the 2 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

Funding summary Updated 26 Oct 2026

**$56M** raised across 1 round since 2022, from 1 source

- **Latest round:** Series A, $56M Nov 2022
- **Investors:** 2

See who backed them

## The rounds

- **Nov 2022** Series A **$56M** [Alexandria Venture Investments](https://millionrounds.com/fund/alexandria-venture-investments) [Catalio Capital Management](https://millionrounds.com/fund/catalio-capital-management) Source recorded SEC filing: $67M sold, first sale Oct 2022

## Founders and team

From the SEC filings it signed: 3 on the team.

- **Dan Edelstein** Executive Officer, Director i
- **Nickolas Papadopoulos** Executive Officer, Director i
- **Olga Maltseva** Executive Officer i

On the board, as filed i *George Petrocheilos* *Isaac Ro* *R. Jacob Vogelstein*

## Everyone who backed them

[Alexandria Venture Investments](https://millionrounds.com/fund/alexandria-venture-investments) VC firm **1** round

[Catalio Capital Management](https://millionrounds.com/fund/catalio-capital-management) VC firm **1** round

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

## Quick answers about Haystack Oncology

### Who invested in Haystack Oncology?

Haystack Oncology's investors include Alexandria Venture Investments and Catalio Capital Management.

### How much has Haystack Oncology raised?

Haystack Oncology has raised $56M across 1 round since 2022.

### When did Haystack Oncology last raise?

Haystack Oncology's most recent round was a Series A of $56M in Nov 2022.

### What was Haystack Oncology's biggest round?

Its most recent round, $56M in Nov 2022, is also its largest on record.

### Who backed Haystack Oncology first?

Haystack Oncology's first round on record, in Nov 2022, was backed by Alexandria Venture Investments and Catalio Capital Management.

### What stage is Haystack Oncology at?

Haystack Oncology's latest named round is a Series A, in Nov 2022.

### Where is Haystack Oncology based?

Haystack Oncology is based in the United States.

## Companies like Haystack Oncology

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)

## 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