# Nucleus RadioPharma funding: rounds and investors

> Nucleus RadioPharma has raised $50M across 2 rounds since 2024. Investors include Mayo Clinic, OrbiMed and Eclipse. Every round with its source.

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

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

# Who invested in *Nucleus RadioPharma*

2 rounds we have observed, with the 3 investors 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.

Healthcare

Raised 7 months ago

Funding summary Updated 26 Oct 2026

**$50M** raised across 2 rounds since 2024, from 2 sources

- **Latest round:** Growth, $50M Apr 2026
- **Investors:** 3

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.

2025 2026

**?** Venture

**$50M** Growth

- **First round:** Venture
- **Biggest round:** $50M
- **Between rounds:** 22 months

## The rounds

- **Apr 2026** Growth **$50M** *2 new* *1 returning* [OrbiMed](https://millionrounds.com/fund/orbimed) [Mayo Clinic](https://millionrounds.com/fund/mayo-clinic) [Eclipse](https://millionrounds.com/fund/eclipse) Source recorded
- **Jun 2024** Venture **Amount undisclosed** *1 new* [Mayo Clinic](https://millionrounds.com/fund/mayo-clinic) Source recorded SEC filing: $6.0M sold, first sale Oct 2022

## Founders and team

From the SEC filings it signed: 1 on the team.

- **Charles Conroy** Executive Officer, Director i

On the board, as filed i *Chris McDonald* *Justin Butler* *Manu Nair* *Mary Kate Wold* *Michael Rossi* *Norman Sharpless* *Tyrell Rivers*

## Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

**Venture** 2024 **Growth** 2026 [Mayo Clinic](https://millionrounds.com/fund/mayo-clinic) [OrbiMed](https://millionrounds.com/fund/orbimed) [Eclipse](https://millionrounds.com/fund/eclipse)

## Everyone who backed them

[Mayo Clinic](https://millionrounds.com/fund/mayo-clinic) Investment firm **2** rounds

[OrbiMed](https://millionrounds.com/fund/orbimed) Private equity **1** round

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

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

## Quick answers about Nucleus RadioPharma

### Who invested in Nucleus RadioPharma?

Nucleus RadioPharma's investors include Mayo Clinic, OrbiMed and Eclipse.

### How much has Nucleus RadioPharma raised?

Nucleus RadioPharma has raised $50M across 2 rounds since 2024. One round did not disclose an amount, so the total is a floor.

### When did Nucleus RadioPharma last raise?

Nucleus RadioPharma's most recent round was a Growth of $50M in Apr 2026.

### What was Nucleus RadioPharma's biggest round?

Its most recent round, $50M in Apr 2026, is also its largest on record.

### Who backed Nucleus RadioPharma first?

Nucleus RadioPharma's first round on record, in Jun 2024, was backed by Mayo Clinic.

### What stage is Nucleus RadioPharma at?

Nucleus RadioPharma's latest named round is a Growth, in Apr 2026.

### Where is Nucleus RadioPharma based?

Nucleus RadioPharma is based in the United States.

## Companies like Nucleus RadioPharma

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)[**AI** $18M · Oct 2026](https://millionrounds.com/company/ai)[**Baba** $40M · Oct 2026](https://millionrounds.com/company/baba)[**Rejuvenate Bio** $13M · Oct 2026](https://millionrounds.com/company/rejuvenate-bio)[**Clinical Ink** $24M · Oct 2026](https://millionrounds.com/company/clinical-ink)

## Find investors like these

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