United States · Series C startup

Who invested in Plexium

2 rounds we have observed, with the 11 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.

BiotechHealthcare

Funding summaryUpdated 26 Oct 2026

$88Mraised across 2 rounds since 2019, from 2 sources

$28MSeries A$60MSeries C
Latest round
Series C, $60MAug 2025
Step-upi
2.1×
Investors
11 (2 led)
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.

202020212022202320242025
$28MSeries A$60MSeries C
First round
Series A, $28M
Oct 2019
Biggest round
$60M
Series C · Aug 2025
Between rounds
5.8 years
from the last two

The rounds

  1. Aug 2025
    Series C$60M6 new2 returning

    Source recordedSEC filing: $60M sold, first sale Jul 2025

  2. Oct 2019

Founders and team

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

  • Stephen MullennixChief Financial Officer
  • Mike GreyExecutive Chairman, Plexium
  • Patrick RiversPortfolio Manager, aMoon

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.

Everyone who backed them

DCVCVC firm2rounds, led 1
CRVVC firm2rounds
The Column GroupVC firm1round, led 1
Lux CapitalVC firm1round
RA Capital ManagementPrivate equity1round
SoftBankInvestment firm1round
TCGPrivate equity1round
TCG CrossoverVC firm1round
Neotribe VenturesVC firm1round
M/VENTURESVC firm1round

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

Quick answers about Plexium

Who invested in Plexium?

Plexium's investors include DCVC, CRV, The Column Group, Lux Capital and RA Capital Management, and 6 more on record.

How much has Plexium raised?

Plexium has raised $88M across 2 rounds since 2019.

When did Plexium last raise?

Plexium's most recent round was a Series C of $60M in Aug 2025.

What was Plexium's biggest round?

Its most recent round, $60M in Aug 2025, is also its largest on record.

Who backed Plexium first?

Plexium's first round on record, in Oct 2019, was backed by DCVC, The Column Group and CRV and 2 others.

What stage is Plexium at?

Plexium's latest named round is a Series C, in Aug 2025.

Where is Plexium based?

Plexium is based in the United States.

Who led Plexium's rounds?

DCVC led the Series A in 2019.

Companies like Plexium

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

Find investors like these

Search every investor by what they have actually funded, then narrow to your stage and market. Free.