/Investor DB

Castle Island Ventures — 2025 Investments

10 investments dated 2025 · listed companies and verified rows first · show all

Surussurus.ioin𝕏Mar 2025SEC filingmedium confidence

Surus is a financial infrastructure platform offering qualified custody, reserve management, and token issuance for digital asset builders, backed by its own North Carolina-chartered trust company.

Crypto & Web3Data & InfrastructureFintechWashington, US

Bradley Gibson(Chief Technology Officer)inBethany Wheeler(Chief Trust Officer)inJennifer Hoopes(Chief Legal Officer)inRachel Trujillo(Chief Compliance Officer)inPatrick Murck(Founder & CEO)in

Board seatNic Carter· per SEC Form D · $10.6M raise · filed Mar 2025

Co-investorsFinancial Venture StudioProtagonistRestive Ventures

Alpen Labsalpenlabs.ioin𝕏Jan 2025 · $8.5M

Alpen Labs builds a Bitcoin layer-2 network that enables financial applications through a ZK rollup with optimistic bridge architecture.

Crypto & Web3FintechNew York City, US

Abishkar Chhetri(Chief Operating Officer)inPramod Kandel(Chief Technology Officer)inSimanta Gautam(Chief Executive Officer)inChandan Sharma Subedi(Co-Founder)inJohn LightinTrey Del Bonis

Co-investorsAccelmed PartnersAsymmetricHivemind Ventures, LlcLaunchpad CapitalMirana VenturesResolute Ventures+8 more

Arxarx.org𝕏Nov 2025 · $6.1M

Arx develops secure chips that embed blockchain authentication into physical items like apparel, collectibles, and certificates, enabling decentralized provenance verification and digital experiences without centralized servers.

Crypto & Web3Deep TechHardware

Co-investorsInflection.xyzPlaceholder VC1kxSeed Club Ventures

Arxarx.visionin𝕏Nov 2025 · $6.1M

ARxVision makes a wearable AI headset and accessories designed to assist blind and low-vision users by describing their surroundings, reading documents, and providing hands-free audio interaction.

AI & Machine LearningHardwareHealthtech

Co-investors5Lion Ventures1kxPlaceholder VCSeed Club Ventures

Felixfelixpago.comin𝕏Mar 2025

Felix is a remittance service that enables users to send money from the United States to Latin America (Mexico, Guatemala, Honduras, El Salvador, and Dominican Republic) via WhatsApp, with funds delivered to bank accounts, mobile wallets, or cash pickup locations.

B2B MarketplacesFintechSan Francisco, US

Bernardo Garcia(Founder)inJuan Llanos(Executive Officer)in

BoardManuel Godoy(Founder)inSean Judge(Director)inPaul Arnold(Director)inAna Cristina Gadala-Maria(Director)in

Co-investorsContour Venture PartnersDorm RoomGeneral CatalystHTwentyMONASHEESQED Investors+9 more

Resolvrresolvr.ioSeed · Sep 2025

W. Aaron Daniel(Founder)inDave Schwab(Founder)in

Co-investorsDraper AssociatesDraper Dragon

Tessertesser.xyzinOct 2025

Tesser provides stablecoin payment infrastructure for financial institutions, including global stablecoin settlement, off-ramp-as-a-service, and stablecoin payment capabilities with wallet infrastructure, on/off ramps, and compliance tools.

Crypto & Web3Enterprise SoftwareFintechNew York City, US

Geetha Panchapakesan(Founder)in

Co-investorsDigital Currency GroupAnthemis VentureStrobe Ventures

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

L2Pear ProtocolRockSolid Network

Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.