Sean Judge
General Partner at Castle Island Ventures
Boston, Massachusetts
Sean Judge, General Partner at Castle Island Ventures is an active investor based in Boston, Massachusetts. This profile covers what Sean Judge backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCMicro VCPEInvestor
- Stages
- Pre SeedSeed
- Invests in
- FintechCrypto & Web3SaaS & Enterprise
- Location
- Boston, Massachusetts
- Typical check
- $150K
- Past investments
- 8
Notable investments
ClearcoEaglebrook AdvisorsUnchained Capital
Arch
JerryFélixCoin MetricsTry Your BestHow to reach Sean Judge
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Cite this page
Round Funded. "Sean Judge." Round Funded investor database, updated September 24, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/sean-judge
Frequently Asked Questions
What does Sean Judge invest in?
Sean Judge invests in Fintech, Crypto & Web3 and SaaS & Enterprise, typically at Pre Seed and Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does Sean Judge invest at?
Sean Judge typically invests at Pre Seed and Seed. Lead with traction that fits the stage when you reach out.
What is Sean Judge's typical check size?
Sean Judge typically writes checks around $150K. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.