United States · Series C startup
Funding summaryUpdated 26 Oct 2026
$106Mraised across 3 rounds since 2017, from 4 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
From Promaxo's own website: 4 on the team.
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
New Science Venture
Amara VenturesAlmond TreeMicroPort Scientific CorporationMicroPort Scientific Corporation/ RocSon Medtech FundMissing a round, or an investor who was in one? Tell us.
These 9 firms list Promaxo 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.
Promaxo's investors include New Science Venture, Amara Ventures, Almond Tree, MicroPort Scientific Corporation and MicroPort Scientific Corporation/ RocSon Medtech Fund.
Promaxo has raised $106M across 3 rounds since 2017.
Promaxo's most recent round was a Series C of $100M in Oct 2026.
Its most recent round, $100M in Oct 2026, is also its largest on record.
Promaxo's first round on record, in Sept 2017, was backed by MicroPort Scientific Corporation.
Promaxo's latest named round is a Series C, in Oct 2026.
Promaxo is based in the United States.
In the same sector, and raised in the last eighteen months.
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