Matthew Walsh
InvestorFounding Partner at Castle Island Ventures
Boston, Massachusetts
Writes $100K – $5M checks · typically $1.5M
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About
Matthew Walsh, ex‑Fidelity financial-services leader who led internal blockchain initiatives preceding Fidelity Digital Assets, focuses on seed-stage public-blockchain equity and prioritizes market structure and regulatory clarity over token-centric trading.
Contact· self-published, not guessed
Invests in
Crypto & Web3CybersecurityData & InfrastructureDeveloper ToolsFintech
Experience
- Castle Island VenturesFounding Partnercurrent2018 — present
- Fidelity InvestmentsVice President2014 — 2018Boston, MA
- Clear Channel Media and EntertainmentManager, National Programming Platforms2010 — 2012New York, NY
- Loughlin Meghji + CompanyAnalyst2009 — 2010New York, NY
- Arthur D. Little, Inc.Senior Business Analyst2007 — 2009New York, NY
Skills & more
Languages French
From Matthew's professional profile.
Colleagues at Castle Island Ventures
Andrew Brochu
Controller at Castle Island Ventures
Gretchen McCarey
Chief Financial Officer at Castle Island Ventures
Gus Coldebella
Chief Legal Officer at Castle Island Ventures
Henry Harris
Investor at Castle Island Ventures
Hunter Merghart
Venture Partner at Castle Island Ventures
Jeff Nazzaro
Advisor and Co-founder at Collective Liquidity
Laura Lentz
Executive Assistant at Castle Island Ventures
Nic Carter
Investor in anti-authoritarian technology; general partner at Castle Island Ventures
Frequently asked questions
- Who is Matthew Walsh?
- Matthew Walsh, ex‑Fidelity financial-services leader who led internal blockchain initiatives preceding Fidelity Digital Assets, focuses on seed-stage public-blockchain equity and prioritizes market structure and regulatory clarity over token-centric trading.
- Where does Matthew Walsh work?
- Matthew Walsh is Founding Partner at Castle Island Ventures.
- What does Matthew Walsh invest in?
- Matthew Walsh invests in Crypto & Web3, Cybersecurity, Data & Infrastructure, Developer Tools, Fintech.
- What check size does Matthew Walsh write?
- Matthew Walsh typically writes checks of $100K – $5M.
- Where did Matthew Walsh go to school?
- Matthew Walsh studied at Duke University - The Fuqua School of Business (Master of Business Administration (MBA)); Babson College (2007, BS: Business Administration); Boston College High School (High School).
Same school
Also attended Duke University - The Fuqua School of Business368
Dave BlivinMANAGING PARTNER at Cottonwood Technology FundBrooke BalcomBoard Member at CincyTechChad SummeBoard Member at CincyTechMatias BarberoVenture Partner at FJ LabsTracie RotterPartner, Platform at Lux CapitalUlili OnovakpuriManaging Partner at Kapor Capital
+ 362 more
Also attended Babson College352
Reid HoffmanCo-founder of LinkedIn; Partner at GreylockEghosa OmoiguiFounder and Managing General Partner at EchoVC PartnersKevin ColleranManaging Director at Slow VenturesAjay RayasamPrincipal at Osage University PartnersRobert VerwaayenGeneral Partner at Keen Venture PartnersBill HurleyPrincipal at Marlin Equity Partners
+ 346 more
Also attended Boston College High School22
Sean JudgeGeneral Partner at Castle Island VenturesAlex SideropoulosInvestor at Silversmith Capital PartnersPeter LagrotteriaInvestor at Flourish VenturesRich RobinsonInvestor at NZVCAlan SwierczynskiSenior Associate at Fifth Down CapitalRobert BrookInvestment Associate at Stand Together Ventures Lab
+ 16 more
Shared employers
Also worked at Fidelity Investments260
Peter SaperstonePartner at GreycroftRob KniazInvestor at Hoxton VenturesHelen ClementInvestor at IVP (Institutional Venture Partners)Adiam BerhaneAccounting Manager at QED InvestorsAubrie PaganoGeneral Partner, Managing Member at Corigin VenturesJoanna Skoler GilmanChief Marketing and Communications Officer at .406 Ventures
+ 254 more
Also worked at Clear Channel Media and Entertainment23
Max WechterSenior Director of AI at Lerer HippeauMelissa BodensieckInvestor at True VenturesAlexander AshavskyManaging Director, Data Science and Engineering at Deerfield Management CompanyPerri LamirExecutive Assistant at StripesPrial BhagatVice President, Product Strategy at Adams Street PartnersDavid ArcaraPartner at Laconia
+ 17 more
Also worked at Arthur D. Little, Inc.98
Katrin GeyskensExecutive Director at Capricorn Venture PartnersTodd FoleyManaging Director at MPM BioImpactKevin KopczynskiPartner at Congruent VenturesYong LimDirector / CRIT Ventures USA at Crit VenturesJason ScottAccelerator Operations at Blockchain BuildersPaul BarrPartner at Pantheon Ventures
+ 92 more












































