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 summaryUpdated 26 Oct 2026

$125Mraised across 1 round since 2026, from 1 source

Latest round: Series B, $125MJan 2026
Investors: 3

See who backed them

The rounds

Jan 2026
Series B$125M
Source recorded

Founders and team

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

Alex LugovskoyChief Executive Officer
John LeeChief Medical Officer
Jonathan PiazzaChief Financial Officer
Patrick AndreChief Scientific Officer
Ruhi AhmedChief Development Officer

Everyone who backed them

Lightspeed Venture PartnersVC firm1round

RA Capital ManagementPrivate equity1round

Janus Henderson InvestorsPrivate equity1round

Missing a round, or an investor who was in one? Tell us.

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.