General Info
Castle Island Ventures is a venture capital firm,
Location: 1 Broadway, Cambridge, Massachusetts, United States, 02142
Country: United States of America
Industries: FinTech,Cryptocurrency / Blockchain,EdTech,Information Technology,Consumer Goods,Advanced Materials,Health & Wellness,Software
Investment Regions:
Investment Stages: seed, series-a
Website: http://www.castleisland.vc
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🤖 AI Activity Report
Status: very-active
AI Reasoning: I found multiple reliable sources showing Castle Island Ventures made investments in September and October 2025: RockSolid (The Block article dated Sep 25, 2025) and Tesser (Morse law notice referencing October 2025 / Tesser press release dated Oct 21, 2025). Both dates are within less than 3 months before the target date, indicating very recent activity.
Here are the thresholds established for the different statuses:
Not Active – No known investments in the last 12 months.
Low Activity – Only known investments between the last 12 and 6 months.
Active – Known investments between the last 6 and 3 months.
Very Active – Known investments in the last 3 months.
Investor Contact
Team Members
Name
Role
Email
LinkedIn
Sean …
General Partner
Ria …
General Partner
Matthew …
Partner
Nic …
Partner
…
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