# Monopar funding: rounds and investors

> Monopar has raised $147M across 3 rounds since 2015. Investors include RA Capital Management, Janus Henderson Investors and Adage Capital Management.

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

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

# Who invested in *Monopar*

3 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.

Biotech Healthcare Pharma

Funding summary Updated 26 Oct 2026

**$147M** raised across 3 rounds since 2015, from 3 sources

**$2.1M** Venture **$9.7M** Round **$135M** Round

- **Latest round:** Round, $135M Sept 2025
- **Step-up i:** 13.9×
- **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.

2015 2017 2019 2021 2023 2025

**$2.1M** Venture

**$9.7M** Round

**$135M** Round

- **First round:** Venture, $2.1M
- **Biggest round:** $135M
- **Usual gap between rounds:** 7.8 years

## The rounds

- **Sept 2025** Round **$135M** *3 new* [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) [Adage Capital Management](https://millionrounds.com/fund/adage-capital-management) Source recorded
- **Nov 2017** Round **$9.7M** No investor was named in the report. Reported by FinSMEs
- **Jun 2015** Venture **$2.1M** No investor was named in the report. From a historical funding record

## Founders and team

From Monopar's own website: 3 on the team.

- **Susan Rodriguez** Chief Commercial and Strategy Officer
- **Kim R. Tsuchimoto** Board Member
- **Nicole Sweeny** Board Member

## 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** 2015 **Round** 2017 **Round** 2025 [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) [Adage Capital Management](https://millionrounds.com/fund/adage-capital-management)

## Everyone who backed them

[RA Capital Management](https://millionrounds.com/fund/ra-capital-management) Private equity **1** round

[Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) Private equity **1** round

[Adage Capital Management](https://millionrounds.com/fund/adage-capital-management) Asset manager **1** round

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

## Quick answers about Monopar

### Who invested in Monopar?

Monopar's investors include RA Capital Management, Janus Henderson Investors and Adage Capital Management.

### How much has Monopar raised?

Monopar has raised $147M across 3 rounds since 2015.

### When did Monopar last raise?

Monopar's most recent round was an Undisclosed round of $135M in Sept 2025.

### What was Monopar's biggest round?

Its most recent round, $135M in Sept 2025, is also its largest on record.

### Who backed Monopar first?

Monopar's first round on record, in Sept 2025, was backed by RA Capital Management, Janus Henderson Investors and Adage Capital Management.

### What stage is Monopar at?

Monopar's latest named round is an Undisclosed round, in Sept 2025.

### Where is Monopar based?

Monopar is based in the United States.

## Companies like Monopar

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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