Ireland · Funded startup

Who invested in Mainstay Medical

4 rounds we have observed, with the one investor 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.

HealthcareManufacturing

Funding summaryUpdated 26 Oct 2026

$38Mraised across 4 rounds since 2011, from 4 sources

$700KSeed$20MSeries B$2.5MVenture$15MDebt

Latest round: Debt, $15MAug 2015
Biggest round: $20MSeries B · Sept 2012
Step-upi: 6×
Investors: 1

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.

2012201320142015

$700KSeed$20MSeries B$2.5MVenture$15MDebt

First round: Seed, $700K
Biggest round: $20M
Usual gap between rounds: 2.9 years

The rounds

Aug 2015
Debt$15M
No investor was named in the report.
From a historical funding record
Oct 2012
Venture$2.5M
No investor was named in the report.
Reported by sec.govSEC filing: $2.5M sold, first sale Sept 2012
Sept 2012
Series B$20M1 new
- Fountain Healthcare Partners
Reported by pevc.dowjones.comSEC filing: $2.5M sold, first sale Sept 2012
Dec 2011
Seed$700K
No investor was named in the report.
Reported by sec.govSEC filing: $700K sold, first sale Dec 2010

Founders and team

From the SEC filings it signed: 1 on the team.

Peter CrosbyExecutive Officer, Directori

On the board, as filediAntoine PapiernikDan SachsManus Rogan

Everyone who backed them

Fountain Healthcare PartnersVC firm1round

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

Also claim to have backed them

This firm lists Mainstay Medical as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

Twin Cities AngelsVC firmPer its own site