Castle Island Ventures — 2021 Investments
4 investments dated 2021 · listed companies and verified rows first · show all
Meow is a financial technology company offering business banking, corporate cards, global payments, invoicing, and crypto services, including a Commercial Paper Account for earning yield on idle cash.
AI & Machine LearningEnterprise SoftwareFintech
Brandon Arvanaghi(Founder)inBryce Crawford(Cofounder)
Co-investorsAcequia Capital (AceCap)Acrew CapitalAcrylicCoinbase VenturesEarl Grey CapitalFounders Fund+15 more
Notabene provides compliance and regulatory technology for crypto businesses and financial institutions, helping them meet regulatory requirements like the FATF Crypto Travel Rule through real-time screening, sanctions checks, and wallet identification.
Crypto & Web3CybersecurityEnterprise SoftwareFintechNew York City, US
Pelle Braendgaard(CEO/ Co-Founder)inAndres Junge(Founder)inAnia Lipinska(Founder)inAlice Nawfal(Founder)in
BoardMatthew Walsh(Director)Peter Johnson(Director)in
Co-investorsDigital Currency GroupF-Prime CapitalParaFi CapitalSignature VenturesWintermuteY Combinator+9 more
Yellow.ai is an agentic AI platform for customer service automation that uses multi-LLM architecture and conversational data to help enterprises reduce operational costs and improve customer interactions.
AI & Machine LearningEnterprise SoftwareSaaSBangalore, IN
Rashid Khan(Founder)inJaya Kishore Reddy Gollareddy(Founder)inRaghu Ravinutala(Founder)in
Co-investorsSapphire VenturesBlockchain.com VenturesCoinbase VenturesFabric VenturesMoonPayPolychain Capital+2 more
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YellowSculpt provides AI-powered 3D character generation software that converts text prompts into fully rigged, animation-ready models for studios and game makers.
AI & Machine LearningGamingPalo Alto, US
Mandeep Waraich(Founder and CEO)inVincent Sitzmann, PhD(Co-founder and Chief Scientist)
Co-investorsAndreessen HorowitzBlockchain.com VenturesCoinbase VenturesFabric VenturesMoonPayPolychain Capital+2 more
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.