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.
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
Education
- The Johns Hopkins University School of MedicinePostdoctoral Fellowship, Plastic and Reconstructive Surgery
- Imperial College LondonBachelor of Medicine, Bachelor of Surgery - MBBS
- Imperial College LondonBachelor of Science - BSc (hons), Medical Sciences with Surgery and Anaesthesia
- Eton CollegeOppidan Scholar
Skills & more
- Full Registration — General Medical Council
From Nicholas's professional profile.
Same school
Also attended The Johns Hopkins University School of Medicine23
+ 17 more
Also attended Imperial College London327
+ 321 more
Also attended Eton College32
+ 26 more
Shared employers
Also worked at XRHealth9
+ 3 more
Also worked at Syndeio Biosciences2
Also worked at Orasis Pharmaceuticals1
Investments
Board seats
Amalgam RxCentrexionCharacter BiosciencesLeo Cancer CareOrasis PharmaceuticalsOSPRIProSomnus Sleep TechnologiesSetPoint MedicalSomethingsSyndeio BiosciencesXRHealth
Per the firm's website.



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