Plexium

Drug Discovery · San Diego, CA · Founded 2017 · Privately Held (backing)

Developer of protein-degrading therapeutics designed to treat cancer and other serious diseases. Plexium is based in San Diego, CA and was founded in 2017. It was valued at $200 million at its later-stage round in Aug 2025, the last priced event on record. It has raised $225 million across 2 recorded rounds; the latest was a $60.1 million later-stage round in Jul 2025.

PMV mark · valuation
$200.0M
Oct 2026
Priced at
its later-stage round
Aug 2025
Total raised
$225.1M
Last round
Later Stage VC
Jul 2025

Who backs Plexium?

18 investors
InvestorType
RA Capital ManagementAsset manager
New Enterprise AssociatesVenture capital
SoftBank Investment AdvisersGrowth equity
Lux CapitalVenture capital
University of CaliforniaOther
CRVVenture capital
M VenturesVenture capital
Neotribe VenturesVenture capital
DCVC BioVenture capital
Surveyor CapitalHedge fund
+ 8 more investors · a free account shows the complete list
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Plexium investors

18 investors are on record for Plexium, including RA Capital Management, New Enterprise Associates, SoftBank Investment Advisers and Lux Capital. By type, the record holds 6 venture capital firms, 1 hedge fund and 1 asset manager. The later-stage round in Jul 2025 drew 20 investors.

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