Oakland, CA · Founded 2016 · Privately Held (backing)
Developer of a portable magnetic resonance imaging (MRI) system designed for improving prostate cancer diagnosis and treatment. Promaxo is based in Oakland, CA and was founded in 2016. Its last reported valuation was $104 million in Jan 2021. It has raised $108 million across 3 recorded rounds; the latest was a $41.9 million early-stage round in Mar 2024.
Last reported valuation
$104.2M
Oct 2026
Priced at
—
Total raised
$107.7M
Last round
Early Stage VC
Mar 2024
Cap table — not yet on record
Promaxo's share-class structure hasn't surfaced in our sources yet. Cap tables are assembled from certificates of incorporation, round filings, and disclosures as they land.
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·The complete investor list: 24 names
·Watch Promaxo: the Monday email on marks, rounds and moves