Menlo Park · Seed–Late Stage · 27 people tracked
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Investment thesis
Ajax Health focuses on investing for growth in the healthcare sector, partnering with experienced industry leaders to build and scale high-quality healthcare businesses on a global basis.
Source: firm website, verified Sep 29, 2026.
Team · 27 people
from the firm's website & curated & public directoriesWhat they invest in
from 9 of 10 portfolio companiesHealthtech ×7Biotech ×4Medical Devices ×4Hardware ×3Digital Health ×2AI & Machine Learning ×1Deep Tech ×1Mental Health ×1
HQs:United States×7France×1India×1
Investments · 10 tracked
founders shown can be your intro pathBy year:2022 · 12021 · 22020 · 22019 · 27 dated
Puzzle Medical develops a heart failure treatment device designed to improve heart and kidney function through 4Fr axillary access, allowing patient ambulation and providing up to seven days of support.
HardwareHealthtechMedical DevicesMontreal
Jade Doucet-Martineau(Co-founder & CEO, Board Director)inFrançois Trudeau(Co-founder & CTO, Board Director)inPhilippe Généreux(Co-founder (Phase 2), Chief Medical Officer & Board Observer)inMaxime Rochon(Co-founder (Phase 2) & VP Clinical, Regulatory and Quality)inYves-Antoine Crête(Co-founder (Phase 2) & VP Technical R&D and Operations)inGabriel Georges(Co-founder & Clinical Advisor)in
Co-investorsBroadview VenturesLumira VenturesDesjardins CapitalBoreal VenturesCathexis VenturesFront Row Ventures+3 more
Protaryx is a medical device company developing cardiac technology, led by a team including a cardiac surgeon and executives with device-industry backgrounds.
BiotechHardwareHealthtechMedical DevicesBaltimore, US
David Mester(CEO)inCameron Purcell(CTO)inTerri Burke(Executive Officer, Director)inJames Gammie(Board Member; Cardiac Surgeon-in-Chief, Johns Hopkins Health System)
BoardAftab Kherani(CMO, AJAX Health; Board Member)in
Board seatDuke Rohlen· per SEC Form D
BiotechPhiladelphia, US
Doug Koo(Mr. Koo is the Chief Financial Officer of the Issuer.)inMichael Dishowitz(Mr. Dishowitz is the Secretary and Treasurer of the Issuer.)Tony Natale(Director)inSasha Schrode(Executive Officer, Director, Promoter)
BoardAftab Kherani(Director)in
Board seatDuke Rohlen· per SEC Form D
Co-investorsWestern Technology InvestmentAPERTURE Venture Partners
XII Medical develops neuromodulation therapies for treating obstructive sleep apnea, focusing on simplifying treatment options and improving patient outcomes.
Deep TechDigital HealthHealthtechMedical DevicesUnion City, US
Garrett Schwab(Chief Executive Officer)inShane Kreidel(Secretary and Chief Financial Officer)inZachary Eisen(Director)
BoardJD Friedland(Director)Saoussen Ben Halima(Director)
Board seatDuke Rohlen· per SEC Form D · $15.1M raise · filed Apr 2022
Co-investorsAPERTURE Venture PartnersBroadview VenturesCincyTechIntuitive VenturesJobsOhio VenturesOmega Funds
BiotechWheat Ridge, US
Dr. Philip Haeusser(Founder)inPeter Ruppersberg(Executive Officer, Director)
Co-investorsWestern Technology Investment
Targeting platform for medical device companies that uncovers new opportunities and tracks existing users.
HealthtechBoston, US
Michael Monovoukas(CEO and Co-Founder)inRobert Coe(CTO and Co-Founder)Lee Smith(Co-Founder and VP of Customer Experience)
BoardLogan Bartlett(Director / Redpoint investor)inEric Vishria(Director / Benchmark investor)in
Co-investorsArtisanal VenturesAtreides ManagementICONIQ GrowthRedpoint VenturesStepstone GroupBenchmark
UroMems designs and commercializes active implantable medical devices for urology, using proprietary microelectromechanical systems technology.
BiotechHardwareHealthtechMedical DevicesGrenoble, FR
Pierre Mozer(Co-founder, MD, PhD)inHamid Lamraoui(Co-founder, PhD)inStéphane Lavallée(Co-founder, PhD)in
Co-investorsSupernova InvestBpifranceCITA Investissement
Wysa for Teams is a mental health SaaS product that delivers emotional wellbeing support to organizations with 200 employees or less through self-guided exercises, anonymous access to reflection spaces, and resources based on cognitive behavioral approaches.
AI & Machine LearningDigital HealthHealthtechMental HealthSaaSWellness & Fitness
Jo Aggarwal(Founder)inRamakant Vempati(Founder)inHarsh Guptain
Co-investorsChange VenturesHealthQuadKae CapitalW Health Ventures Gp LlcBritish International Investmentpi Ventures
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.
Portfolio news
latest coverage across their companiesUroMems · finsmes.com · May 14, 2026
Frequently asked questions
- How many investments has Ajax Health made?
- Ajax Health has 10 tracked investments.
- What stage does Ajax Health invest at?
- Ajax Health invests at the Seed, Series A, Series B, Series C, Late Stage stages.
- What sectors does Ajax Health focus on?
- Ajax Health focuses on Biotech, Digital Health, Healthtech, Medical Devices.
- Where is Ajax Health located?
- Ajax Health is headquartered in Menlo Park, US.
- Who does Ajax Health co-invest with?
- Ajax Health most often shares deals with Artisanal Ventures, Atreides Management, ICONIQ Growth, among 5 tracked co-investors.
Media · Podcasts & interviews
featuring the teamInvestor Connect - Episode 149 - Duke Rohlen of Ajax Health
Hall Martin · Duke Rohlen
Images
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