# OncoNano funding: rounds and investors

> OncoNano has raised $47M across 2 rounds since 2018. Investors include Salem Partners. Every round with its source.

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

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

# Who invested in *OncoNano*

2 rounds we have observed, with the one investor named in them. 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

**$47M** raised across 2 rounds since 2018, from 2 sources

**$12M** Series A **$35M** Series A

- **Latest round:** Series A, $35M Jul 2019
- **Step-up i:** 3×
- **Investors:** 1

See who backed them

## The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2019

**$12M** Series A

**$35M** Series A

- **First round:** Series A, $12M
- **Biggest round:** $35M
- **Between rounds:** 14 months

## The rounds

- **Jul 2019** Series A **$35M** *1 returning* [Salem Partners](https://millionrounds.com/fund/salem-partners) Reported by FinSMEs
- **May 2018** Series A **$12M** *1 new* [Salem Partners](https://millionrounds.com/fund/salem-partners) Reported by FinSMEs

## Everyone who backed them

[Salem Partners](https://millionrounds.com/fund/salem-partners) Growth equity **2** rounds

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

## Also claim to have backed them

This firm lists OncoNano 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.

[Green Park & Golf Ventures](https://millionrounds.com/fund/green-park-and-golf-ventures) VC firm Per its own site

## Quick answers about OncoNano

### Who invested in OncoNano?

OncoNano's investors include Salem Partners.

### How much has OncoNano raised?

OncoNano has raised $47M across 2 rounds since 2018.

### When did OncoNano last raise?

OncoNano's most recent round was a Series A of $35M in Jul 2019.

### What was OncoNano's biggest round?

Its most recent round, $35M in Jul 2019, is also its largest on record.

### Who backed OncoNano first?

OncoNano's first round on record, in May 2018, was backed by Salem Partners.

### What stage is OncoNano at?

OncoNano's latest named round is a Series A, in Jul 2019.

### Where is OncoNano based?

OncoNano is based in the United States.

## Companies like OncoNano

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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