Sean Judge works as a General Partner at Castle Island Ventures. The firm's known portfolio counts 10 companies.
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Investment focus
- Sector
- FinTech
Contacts
Affiliated funds' portfolios
General Partner at Castle Island Ventures, whose known portfolio counts 10 companies
- Atrium
- Valinor
- Project Eleven
- Birch Hill Holdings
- RockSolid Network
- XFX
- Arx
- Gondor
- Cyclops.io
- Tesser
Investor Profile
Sean Judge is listed against sector FinTech, and focus areas Blockchain, Crypto, DeFi and NFT in the database.
Stage-wise, the deals at Castle Island Ventures cluster around Pre-Seed, Seed and Series A rounds.
What the affiliated firm has backed is the closest available signal on whether Sean Judge is worth approaching.
Colleagues at Castle Island Ventures
Frequently asked questions
Who is Sean Judge?
Sean Judge is a venture capital investor based in Boston, Massachusetts, United States, listed as General Partner at Castle Island Ventures. The known portfolio of that firm counts 10 companies. That portfolio belongs to the firm, not to Sean Judge personally.
What does Sean Judge invest in?
Listed sectors include FinTech; listed focus areas include Blockchain, Crypto, DeFi and NFT. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Sean Judge invest at?
Castle Island Ventures appears in Pre-Seed, Seed and Series A rounds across its known deals, and Sean Judge is listed there as General Partner. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Sean Judge listed at?
Sean Judge is listed as General Partner at Castle Island Ventures. 4 other people in the database share a firm with Sean Judge.
How do I contact Sean Judge?
An email address, a phone number and a LinkedIn page are on file for Sean Judge. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal