Fundraising Fox

Ronald Brus

Founder

Founder & Chief Growth Officer at Leyden Labs

The Randstad, Netherlands

FoundedLeyden Labs

About

Ronald Brus is a physician, entrepreneur, and investor with over 30 years of experience in the healthcare and biotechnology sectors. He founded myTomorrows and Eyro.ai and co-founded Leyden Labs, and previously held executive roles at Crucell, including CEO, COO, CBO, and EVP Business Development, and served on the Executive Committee of Galapagos. Brus received his medical degree from the University of Groningen and works as a board member, advisor, and investor in biotechnology, artificial intelligence, and preventive medicine.

Founder & Chief Growth Officer at Leyden Labs

Intro paths

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In turn, Ronald can intro founders to Leyden Labs's investors below.

Leyden Labs's investors · 12

Bluebird VenturesPalo AltoCasdin CapitalNew YorkClavystBioSingapore · since 2026Connecticut InnovationsNew Haven · $500K – $2M checksEuropean Innovation Council Fundsince 2026European Investment BankLuxembourgF-Prime CapitalCambridge · $3M – $10M checksGV (Google Ventures)Mountain View · $250K – $50M checksInvest-NLAmsterdam · since 2026InvusNew YorkPolaris PartnersBoston · $500K – $5M checksQiming Venture PartnersBeijing · $5M – $134M checks

Co-founders at Leyden Labs

KWKoenraad Wiedhaup
Koenraad WiedhaupFounder & Chief Executive Officer
JGJaap Goudsmit
Jaap GoudsmitFounding Scientist and Senior Advisor
DV
Dinko ValerioFounder and Chair of the Supervisory Board

Experience

  1. Eyro.aiFoundercurrent2026 — present
  2. Tzu Cancer TherapeuticsFoundercurrent2025 — present
  3. myTomorrows.comFounder and Presidentcurrent2012 — presentAmsterdam Area, Netherlands
  4. Leyden LabsCo-Founder and CBOcurrent2020 — presentAmsterdam
  5. Feyenoord Rotterdam N.V.Board of Directors Feyenoord2020 — 2024Rotterdam, Zuid-Holland, Nederland
  6. GalapagosMember of the Executive Committee2010 — 2011Belgium
  7. CrucellCEO2004 — 2011the Netherlands
  8. CrucellCOO2003 — 2004the Netherlands
  9. CrucellCBO2000 — 2003the Netherlands
  10. CrucellExecutive Vice President Business Development1997 — 2000the Netherlands
  11. GalapagosMember of the Executive Committee2000 — 2003Belgium
  12. Forest LaboratoriesProduct planning physician1994 — 1996United States
  13. Zambon B.V.Medical Director1990 — 1994the Netherlands

Skills & more

Business Development51Start-ups44Biotechnology25Entrepreneurship16Product Development4Cross-functional Team Leadership4Technology Transfer8Business Strategy5Lifesciences2Project Management2Executive Management2R&D3
+7 moreCompetitive AnalysisCommercializationVenture CapitalLife SciencesStrategyManagementPharmaceutical Industry

From Ronald's professional profile.

Frequently asked questions

Who is Ronald Brus?
Ronald Brus is a physician, entrepreneur, and investor with over 30 years of experience in the healthcare and biotechnology sectors. He founded myTomorrows and Eyro.ai and co-founded Leyden Labs, and previously held executive roles at Crucell, including CEO, COO, CBO, and EVP Business Development, and served on the Executive Committee of Galapagos. Brus received his medical degree from the University of Groningen and works as a board member, advisor, and investor in biotechnology, artificial intelligence, and preventive medicine.
Where does Ronald Brus work?
Ronald Brus is Founder & Chief Growth Officer of Leyden Labs.
What companies did Ronald Brus found?
Ronald Brus founded Leyden Labs.
Where did Ronald Brus go to school?
Ronald Brus studied at University of Groningen (Doctor of Medicine (MD)).

Founder mafias

University of Groningen mafia19

Also came through, then founded or led a company.

Remco van ZantenMsCFounded Zalando +2Ed Samulski, PhDPostdoctoral ResearchFounded Liquidia Technologies +1Koen ThijssenBScFounded Insify Small business insurance +1Herman KienhuisMScFounded Curiosity VCGjalt HuismanDoctor of Philosophy - PhDFounded Embold TherapeuticsJeroen KimmelsEconometricsFounded Future Food Fund

+ 12 more

Leyden Labs mafia2

Also came through, then founded or led a company.

Sjoerd NikkelenAdvisor FundraisingFounded Mophones

Mytomorrows mafia2

Also came through, then founded or led a company.

Robert KraalCOOFounded Silverflow

Same school

Also attended University of Groningen166

Ragnar JongenInvestor at DN CapitalGizem CakilInvestor at OpenView Venture PartnersJelle Van de PutteFund Administrator at Capricorn Venture PartnersLaura LentzExecutive Assistant at Castle Island VenturesChristophe de MontillePartner at Beyond Capital VenturesPeter HaasjesHead of Investments at Noaber

+ 160 more

Shared employers

Also worked at myTomorrows.com4

Marnix van der PloegInvestor at EQT VenturesMinh Thu NguyenFellow at Curie CapitalWouter VerhoevenVenture Partner at BioGeneration VenturesRobert KraalInvestor at Flow • Money Management Products

Also worked at Galapagos5

Marco PrunottoInvestor at MedicxiMichele MantoVenture Partner at XGEN VentureHelmuth van EsAdvisory Committee member at Curie CapitalRianne EllenbroekPrincipal at BioGeneration VenturesPaul StoffelsVice President at Johnson & Johnson Innovation – JJDC

Also worked at Crucell4

Michel BriejerManaging Partner at Thuja CapitalHelmuth van EsAdvisory Committee member at Curie CapitalWouter VerhoevenVenture Partner at BioGeneration VenturesOscar SlotboomManaging Partner at BioGeneration Ventures

Also worked at Forest Laboratories9

Jayson RiegerManaging Partner at PBM CapitalJeffrey M. JonasPartner at Cure VenturesJulia StephanusPartner at Borealis VenturesIvan GergelManaging Partner and Chief Medical Officer at New Rhein Healthcare Investors, LLCStephen LePartner at MBK PartnersKristen RooneyHead of Business Development at Third Prime

+ 3 more