# Cyteir funding: rounds and investors

> Cyteir has raised $29M across 1 round since 2018. Investors include Lightstone Ventures, DROIA Oncology and Venrock/ Celgene. Every round with its source.

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

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

# Who invested in *Cyteir*

One round we have observed, with the 3 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 Healthcare

Funding summary Updated 26 Oct 2026

**$29M** raised across 1 round since 2018, from 1 source

- **Latest round:** Series B, $29M Mar 2018
- **Investors:** 3

See who backed them

## The rounds

- **Mar 2018** Series B **$29M** [Lightstone Ventures](https://millionrounds.com/fund/lightstone-ventures) DROIA Oncology Venrock/ Celgene Reported by FinSMEs

## Everyone who backed them

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

DROIA Oncology no record of our own yet **1** round

Venrock/ Celgene no record of our own yet **1** round

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

## Quick answers about Cyteir

### Who invested in Cyteir?

Cyteir's investors include Lightstone Ventures, DROIA Oncology and Venrock/ Celgene.

### How much has Cyteir raised?

Cyteir has raised $29M across 1 round since 2018.

### When did Cyteir last raise?

Cyteir's most recent round was a Series B of $29M in Mar 2018.

### What was Cyteir's biggest round?

Its most recent round, $29M in Mar 2018, is also its largest on record.

### Who backed Cyteir first?

Cyteir's first round on record, in Mar 2018, was backed by Lightstone Ventures, DROIA Oncology and Venrock/ Celgene.

### What stage is Cyteir at?

Cyteir's latest named round is a Series B, in Mar 2018.

### Where is Cyteir based?

Cyteir is based in the United States.

## Companies like Cyteir

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)

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