Promaxo

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
How much has Promaxo raised?
$107.7Macross 3 recorded rounds · May 2020 – Mar 2024

Most recently, Promaxo raised $41.9M in its Early Stage VC (Mar 2024).

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Promaxo round by round

3 rounds
Mar 2024Early Stage VC$41.9MSEC filing▮
163 investors participated
Dec 2020Seed Round$4.2MSEC filing▮
4 investors participated
May 2020Early Stage VC$11.0MSEC filing▮
69 investors participated

How much has Promaxo raised?

Promaxo has raised $108 million across 3 recorded rounds since 2020. The largest was a $41.9 million early-stage round in Mar 2024.

Promaxo has filed 4 Form Ds with the SEC since 2020, most recently in Jul 2024 ($41.9 million sold to 163 investors).

Promaxo investors

24 investors are on record for Promaxo, including US National Science Foundation, MedTech Innovator, Keiretsu Forum and TEDCO. The early-stage round in Mar 2024 drew 163 investors.

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Frequently asked about Promaxo

How much has Promaxo raised?
Promaxo has raised $107.7M in total across 3 recorded funding rounds.
When was Promaxo's last funding round?
Promaxo's most recent recorded round was Early Stage VC in Mar 2024, raising $41.9M.