Nicholas von Guionneau
InvestorAnalyst at Catalio Capital Management, LP
United Kingdom
Writes $100K – $5M checks · typically $1.5M
About
Nicholas von Guionneau is a Principal at Catalio Capital Management, where he makes private credit and venture investments in healthcare companies, with a focus on medtech and neurotherapeutics. Before joining Catalio, he was a Postdoctoral Research Fellow at Johns Hopkins Medicine working on peripheral nerve regeneration and implantable neurodevices, drug delivery systems, and protein therapeutics, and earlier practiced as a clinician at Guy's and St. Thomas' NHS Trust in London. He holds an MBBS and a BSc in Medical Sciences from Imperial College School of Medicine.
Contact· self-published, not guessed
Invests in
BiotechDigital HealthHealthtechMedical Devices
Experience
- Catalio Capital ManagementPrincipalcurrent2025 — present
- Catalio Capital ManagementSenior Analyst2021 — 2025
- Catalio Capital ManagementAnalyst2021USA
- XRHealthBoard Observercurrent2026 — present
- ProSomnus® Sleep TechnologiesBoard Observercurrent2026 — present
- SOMETHINGSBoard Observercurrent2026 — present
- Amalgam RxBoard Observercurrent2025 — present
- Leo Cancer CareBoard Observercurrent2025 — present
- Syndeio BiosciencesBoard Observercurrent2025 — present
- Orasis PharmaceuticalsBoard Observercurrent2024 — present
- Character BiosciencesBoard Observercurrent2022 — present
- Proto AxiomNon Executive Directorcurrent2022 — present
- Proto AxiomBoard Observer2022
- SetPoint MedicalBoard Observercurrent2021 — present
- Roshal HealthBoard Observer2024 — 2025
- LifeSprout, Inc.Board Observer2022 — 2025
- Boost Neuroscience, Inc.Board Observer2023 — 2025
- Blackrock NeurotechBoard Observer2022 — 2024
- Johns Hopkins MedicinePostdoctoral Research Fellow2018 — 2021
- Guy's and St Thomas' NHS Foundation TrustMedical Doctor2016 — 2017London, United Kingdom
Skills & more
- Full Registration — General Medical Council
From Nicholas's professional profile.
Investments
Board seats
AmalgamCentrexionCharacter BioLeo Cancer CareOrasis PharmaceuticalsOspriProSomnus Sleep TechnologiesSetPoint MedicalSomethingsSyndeio BiosciencesXRHealth
Per the firm's website.
Colleagues at Catalio Capital Management, LP
Adam Riess
Venture Partner at Catalio Capital Management, LP
Alan Ashworth
Venture Partner at Catalio Capital Management, LP
Christine E. 'Kricket' Seidman
Venture Partner at Catalio Capital Management, LP
Dan Littman
Venture Partner at Catalio Capital Management, LP
David Sinclair
Venture Partner at Catalio Capital Management, LP
Diamantis Xylas
Analyst at Catalio Capital Management, LP
Frances H. Arnold
Venture Partner at Catalio Capital Management, LP
Freda Lewis-Hall
Venture Partner at Catalio Capital Management, LP
Frequently asked questions
- Who is Nicholas von Guionneau?
- Nicholas von Guionneau is a Principal at Catalio Capital Management, where he makes private credit and venture investments in healthcare companies, with a focus on medtech and neurotherapeutics. Before joining Catalio, he was a Postdoctoral Research Fellow at Johns Hopkins Medicine working on peripheral nerve regeneration and implantable neurodevices, drug delivery systems, and protein therapeutics, and earlier practiced as a clinician at Guy's and St. Thomas' NHS Trust in London. He holds an MBBS and a BSc in Medical Sciences from Imperial College School of Medicine.
- Where does Nicholas von Guionneau work?
- Nicholas von Guionneau is Analyst at Catalio Capital Management, LP.
- What does Nicholas von Guionneau invest in?
- Nicholas von Guionneau invests in Biotech, Digital Health, Healthtech, Medical Devices.
- What check size does Nicholas von Guionneau write?
- Nicholas von Guionneau typically writes checks of $100K – $5M.
- What boards does Nicholas von Guionneau sit on?
- Nicholas von Guionneau holds tracked board seats at Amalgam, Centrexion, Character Bio, Leo Cancer Care, Orasis Pharmaceuticals, Ospri, ProSomnus Sleep Technologies, SetPoint Medical, Somethings, Syndeio Biosciences.
- Where did Nicholas von Guionneau go to school?
- Nicholas von Guionneau studied at The Johns Hopkins University School of Medicine (Postdoctoral Fellowship, Plastic and Reconstructive Surgery); Imperial College London (Bachelor of Medicine, Bachelor of Surgery - MBBS); Imperial College London (Bachelor of Science - BSc (hons), Medical Sciences with Surgery and Anaesthesia).
Same school
Also attended The Johns Hopkins University School of Medicine28
Hal PazInvestor at Khosla VenturesRochelle WalenskyExecutive Partner at Flare Capital PartnersBeth SeidenbergFounding Managing Director at Westlake Village BioPartnersS.K. LeeExecutive Coach at Roble VenturesKayarash KarimianSenior Associate at Cure VenturesSamantha GuinnAnalyst at Novartis Venture Fund
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Also attended Imperial College London499
Deji SasegbonVP, Platform & Portfolio Operations at EchoVC PartnersMadison LenormandInvestor at DaphniPauline BoucherInvestor at DaphniLoubaba El AyoubiInvestor at NorthzoneGiovanni MariggiInvestor at MedicxiFrancois PrinslooInvestor at Medicxi
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Also attended Eton College44
Chris BischoffInvestment Team at General CatalystCoen ArmstrongInvestor at Spark CapitalThomas MaranoAssociate, US at RTP GlobalDevin KohliCo-Founder and General Partner at Outward VCCharles SpicerNon-Executive Chair at EMV CapitalAlexander RossGeneral Partner & Head of New York at Illuminate Financial
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Shared employers
Also worked at XRHealth10
Neville TeagardenCo-Founder and General Partner at AI CapitalElizabeth CookManaging Partner, North America at AI CapitalScott SpanglerManaging Partner | COO at AI CapitalMaite MaletPrincipal at Asabys PartnersAleix PérezPrincipal at Criteria Venture TechVijay BarathanPartner at Optum Ventures
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