Who invested in DELFI Diagnostics

2 rounds we have observed, with the 4 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.

Raised 11 months ago

Funding summaryUpdated 26 Oct 2026

$259Mraised across 2 rounds since 2022, from 2 sources

$225MSeries B$34MRound

Latest round: Round, $34MDec 2025
Biggest round: $225MSeries B · Jul 2022
Investors: 4

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.

202320242025

$225MSeries B$34MRound

First round: Series B, $225M
Biggest round: $225M
Between rounds: 3.4 years

The rounds

Dec 2025
Round$34M
No investor was named in the report.
Filed with the SEC (Form D); no report of this raise yetSEC filing: $34M sold, first sale Dec 2025
Jul 2022
Series B$225M4 new
Source recordedSEC filing: $225M sold, first sale Jun 2022

Founders and team

From DELFI Diagnostics's own website: 4 on the team.

Susan TousiChief Executive Officer
Nidhi NarangVice President, Software and Data Engineering
Ally DashnerChief People Officer
Cindy SorianoChief Financial Officer

AdvisersCharles Newton

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.

Series B2022Round2025

Everyone who backed them

Menlo VenturesVC firm1round

OrbiMedPrivate equity1round

Eli LillyCorporate VC1round

Samsara BioCapitalVC firm1round

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

Also claim to have backed them

These 3 firms list DELFI Diagnostics as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.