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    All investors

    Fund Name:

    Castle Island Ventures

    Invested projects:

    97 top 10 investors

    Links:

    Website

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    invested projects

    1 - 10 of 97
    #
    Project
    Round
    Date
    Raised
    Project category
    Investors
    01
    BirdAI
    Seed
    Jul 2026
    Raised
    4000000
    Analytics Data Service Infrastructure MEV Sui Ecosystem
    Investors:
    Castle Island Ventures | Lead investor Metalayer Ventures | Lead investor The Venture Dept | Lead investor
    Castle Island Ventures , Metalayer Ventures, The Venture Dept
    02
    Cyclops
    Series A
    Jul 2026
    Raised
    20000000
    Infrastructure Payment Stablecoin
    Investors:
    Nava Ventures Coinbase Circle +3
    Castle Island Ventures F-Prime Capital OpenFX
    Nava Ventures , Coinbase, Circle, Castle Island Ventures, F-Prime Capital, OpenFX
    03
    Valinor
    Seed
    Mar 2026
    Raised
    25000000
    Finance/Banking Lending/Borrowing
    Investors:
    Castle Island Ventures SIG DTI (a Susquehanna International Group Company) Maven 11 Capital
    Castle Island Ventures , SIG DTI (a Susquehanna International Group Company), Maven 11 Capital
    04
    XFX
    Series A
    Mar 2026
    Raised
    17000000
    Finance/Banking Infrastructure Payment
    Investors:
    Castle Island Ventures Coinbase Ventures HAUN Ventures
    Castle Island Ventures , Coinbase Ventures, HAUN Ventures
    05
    Cyclops
    Unknown
    Mar 2026
    Raised
    8000000
    Infrastructure Payment Stablecoin
    Investors:
    Castle Island Ventures F-Prime Capital Shift4 Payments
    Castle Island Ventures , F-Prime Capital, Shift4 Payments
    06
    Birch Hill Holdings
    Pre-seed
    Feb 2026
    Raised
    2500000
    DeFi Infrastructure Real-World Assets
    Investors:
    ParaFi Capital Castle Island Ventures Nascent +6
    FalconX The Operating Group Polaris Fund Escape Velocity JST Digital Flowdesk
    ParaFi Capital , Castle Island Ventures, Nascent, FalconX, The Operating Group, Polaris Fund, Escape Velocity, JST Digital, Flowdesk
    07
    Project Eleven
    Series A
    Jan 2026
    Raised
    20000000
    Bitcoin Ecosystem Data Service Infrastructure Security
    Investors:
    Castle Island Ventures Coinbase Ventures Lattice Fund +4
    Variant Fund Quantonation Nascent Balaji Srinivasan
    Castle Island Ventures , Coinbase Ventures, Lattice Fund, Variant Fund, Quantonation, Nascent, Balaji Srinivasan
    08
    Gondor
    Pre-seed
    Dec 2025
    Raised
    2500000
    DeFi Lending/Borrowing
    Investors:
    Prelude (ex Cherry Crypto) Castle Island Ventures Maven 11 Capital
    Prelude (ex Cherry Crypto) , Castle Island Ventures, Maven 11 Capital
    09
    Arx Research
    Seed
    Nov 2025
    Raised
    Identity Infrastructure Payment
    Investors:
    Castle Island Ventures Inflection Placeholder +2
    Seed Club Ventures 1kx
    Castle Island Ventures , Inflection, Placeholder, Seed Club Ventures, 1kx
    10
    RockSolid
    Pre-seed
    Sep 2025
    Raised
    2800000
    DeFi Insurance
    Investors:
    Castle Island Ventures GSR Markets LTD Kindred Ventures +8
    Blockchain Builders Fund (BBF) IDEO CoLab Ventures Stanford Blockchain Accelerator (SBA) Rocket Pool Pier Two Chris Cable Scott Keto Charles Lu
    Castle Island Ventures , GSR Markets LTD, Kindred Ventures, Blockchain Builders Fund (BBF), IDEO CoLab Ventures, Stanford Blockchain Accelerator (SBA), Rocket Pool, Pier Two, Chris Cable, Scott Keto, Charles Lu