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Sebastian Anastassiou

Investor

Partner at Nina Capital · Board director at Navidence · Board director at Segmed

Barcelona, Spain

Writes $216K – $1.6M checks · typically $25M

Find your path to Sebastian

145 people in our graph share verified history with Sebastian — schools, employers, funds. One of them is your warm intro.

Sofia DolfeunlockedSebastian: together at The University of Edinburgh (2010–2013)
×7Sebastian: together at The University of Edinburgh
Sebastian: together at Promptly
Sebastian: together at IESE Business School

About

Sebastian Anastassiou leverages his UCL Business tech‑transfer and healthcare commercialization background to connect academic and clinical innovations to funding and offers approachable, genuinely helpful VC-relations guidance to digital health founders.

Contact· self-published, not guessed

Invests in

AI & Machine LearningData & InfrastructureHealthtechMedical DevicesSaaS

Board director at Navidence

Intro paths

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In turn, Sebastian can intro founders to Navidence's investors below.

Navidence's investors · 3

Grand VenturesGrand Rapids · $250K – $2M checks · since 2026Nina CapitalBarcelona · $215K – $1.6M checks · since 2026Teamworthy VenturesNew York

Board director at SegmedYC W20

Intro paths

YC

Segmed went through Y Combinator (Winter 2020) — Sebastian sits on its board, so any YC alum in your network can reach them through the company's founders.

→

In turn, Sebastian can intro founders to Segmed's investors below.

Segmed's investors · 9

Alchemist AcceleratorSan Francisco · $30K checks · since 2023Blumberg CapitalMiami · $500K – $5M checks · since 2022ExpeditionsWarsaw · since 2022iGan PartnersToronto · $365K – $2.2M checks · since 2024Mighty CapitalSan Francisco · since 2022Nina CapitalBarcelona · $215K – $1.6M checks · since 2022NovaCapitalsince 2022South Quadsince 2022Y CombinatorSan Francisco · $500K checks · since 2020

Co-founders at Segmed

MWMartin Willemink
Martin WilleminkCo-founder
JWJie Wu
Jie WuFounder
MJ
Marinus Johannes WilleminkExecutive Officer, Director
WAWojciech Adam Koszek
Wojciech Adam KoszekExecutive Officer, Director
CHCailin Hardell
Cailin HardellFounder
CKCailin Kramer
Cailin KramerFounder

Experience

  1. Nina CapitalPartner & Head of Investmentscurrent2025 — presentBarcelona, Catalonia, Spain
  2. Nina CapitalPrincipal, Head of Investments2022 — 2025Barcelona, Catalonia, Spain
  3. Nina CapitalInvestment Manager2021 — 2022Barcelona, Cataluña, España
  4. Nina CapitalAssociate2020 — 2021Barcelona, Catalonia, Spain
  5. Nina CapitalMBA Associate2020Barcelona, Catalonia, Spain
  6. NavidenceBoard Membercurrent2025 — present
  7. Connective HealthBoard Membercurrent2024 — present
  8. Segmed, Inc.Board Membercurrent2022 — present
  9. Promptly HealthBoard Observercurrent2021 — present
  10. EarlySightBoard Membercurrent2021 — present
  11. EarlySightBoard Observer2020 — 2021
  12. contextflowBoard Member2021 — 2026
  13. Formulator Ltd.Board Member2022 — 2024
  14. Terapet SABoard Member2023 — 2024
  15. Replica AnalyticsBoard Observer2020 — 2022
  16. IESE Business SchoolMBA Candidate 20212019 — 2021Barcelona Area, Spain
  17. UCL Business PLCAssociate Business Manager2017 — 2019London, United Kingdom
  18. UCL Business PLCInternational Alliance Associate2016 — 2017London, United Kingdom
  19. UCL Business PLCInformation Management Associate2016 — 2017London, United Kingdom
  20. applied strategicAnalyst2015London, United Kingdom
  21. ExclusivelySpa - Global Spa Consultancy & OperatorExecutive Associate2014 — 2015Limassol, Cyprus
  22. Epidarex CapitalAnalyst2014Edinburgh, United Kingdom
  23. Centre for Cognitive and Neural SystemsResearch Assistant2012University of Edinburgh

Skills & more

Neuroscience10Cognitive Neuroscience5Life Sciences7Biotechnology11Healthcare3Regulatory Affairs2Policy2Clinical Research4Research11Science5Molecular Biology4Technological Innovation1
+12 moreBudgetsData AnalysisBusiness StrategyProject ManagementBusiness DevelopmentStart-upsCommercializationTechnology TransferMicrosoft OfficeVisual BasicMicrosoft ExcelManagement

Languages English · French · Greek · Norwegian · Spanish

From Sebastian's professional profile.

Colleagues at Nina Capital

Aline Noizet
Community Manager at Nina Capital
Anuj Patel
Venture Partner at Nina Capital
Bob Schulz
Chief Partnership Officer at Nina Capital
Daniel Fero
Managing Director at OMX Ventures
Fiorela Kapllanaj
Analyst at Nina Capital
Helen Routh
Venture Partner at Nina Capital
Himanshu Sharma
Senior Associate at Nina Capital
Jordi Pedrol
Head of Finance at Nina Capital

Frequently asked questions

Who is Sebastian Anastassiou?
Sebastian Anastassiou leverages his UCL Business tech‑transfer and healthcare commercialization background to connect academic and clinical innovations to funding and offers approachable, genuinely helpful VC-relations guidance to digital health founders.
Where does Sebastian Anastassiou work?
Sebastian Anastassiou is Partner at Nina Capital and Board director at Navidence and Board director at Segmed.
What does Sebastian Anastassiou invest in?
Sebastian Anastassiou invests in AI & Machine Learning, Data & Infrastructure, Healthtech, Medical Devices, SaaS.
What check size does Sebastian Anastassiou write?
Sebastian Anastassiou typically writes checks of $216K – $1.6M.
Where did Sebastian Anastassiou go to school?
Sebastian Anastassiou studied at IESE Business School (Master of Business Administration - MBA, Business Administration and Management); The University of Edinburgh (Master of Science (MSc), Management of Bioeconomy); The University of Edinburgh (Bachelor of Science (BSc), Neuroscience).

Same school

Shared employers

Also worked at Promptly Health1

Pablo VenturaInvestor at Kfund