# Diagonal Therapeutics funding: rounds and investors

> Diagonal Therapeutics has raised $125M across 1 round since 2026. Investors include Lightspeed Venture Partners, RA Capital Management and Janus Henderson...

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

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

# Who invested in *Diagonal Therapeutics*

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.

Pharma

Raised 10 months ago

Funding summary Updated 26 Oct 2026

**$125M** raised across 1 round since 2026, from 1 source

- **Latest round:** Series B, $125M Jan 2026
- **Investors:** 3

See who backed them

## The rounds

- **Jan 2026** Series B **$125M** [Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) [Janus Henderson Investors](https://millionrounds.com/fund/janus-henderson-investors) Source recorded

## Founders and team

From Diagonal Therapeutics's own website: 5 on the team.

- **Alex Lugovskoy** Chief Executive Officer
- **John Lee** Chief Medical Officer
- **Jonathan Piazza** Chief Financial Officer
- **Patrick Andre** Chief Scientific Officer
- **Ruhi Ahmed** Chief Development Officer

## Everyone who backed them

[Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) VC firm **1** round

[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

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

## Quick answers about Diagonal Therapeutics

### Who invested in Diagonal Therapeutics?

Diagonal Therapeutics's investors include Lightspeed Venture Partners, RA Capital Management and Janus Henderson Investors.

### How much has Diagonal Therapeutics raised?

Diagonal Therapeutics has raised $125M across 1 round since 2026.

### When did Diagonal Therapeutics last raise?

Diagonal Therapeutics's most recent round was a Series B of $125M in Jan 2026.

### What was Diagonal Therapeutics's biggest round?

Its most recent round, $125M in Jan 2026, is also its largest on record.

### Who backed Diagonal Therapeutics first?

Diagonal Therapeutics's first round on record, in Jan 2026, was backed by Lightspeed Venture Partners, RA Capital Management and Janus Henderson Investors.

### What stage is Diagonal Therapeutics at?

Diagonal Therapeutics's latest named round is a Series B, in Jan 2026.

### Where is Diagonal Therapeutics based?

Diagonal Therapeutics is based in the United States.

## Companies like Diagonal Therapeutics

In the same sector, and raised in the last eighteen months.

[**Matchpoint Therapeutics** $220M · Oct 2026](https://millionrounds.com/company/matchpoint-therapeutics)[**Rx Bandz** Oct 2026](https://millionrounds.com/company/rx-bandz)[**Hera Biotech** $1.8M · Sept 2026](https://millionrounds.com/company/hera-biotech)[**GevRx Nutraceuticals** $300K · Sept 2026](https://millionrounds.com/company/gevrx-nutraceuticals)[**RegCell** $81M · Sept 2026](https://millionrounds.com/company/regcell)[**ClearSight Therapeutics** $307K · Sept 2026](https://millionrounds.com/company/clearsight-therapeutics)

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