Castle Island Ventures

Other · Boston, Massachusetts

Castle Island Ventures is a direct investment firm based in Cambridge, Massachusetts. 51 portfolio companies, 1 recorded round and 8 funds are on record.

AUM
$22
Portfolio companies
51
Recorded deals
1
1 in last 12M
Last investment
Feb 2026

Deal history

1 participations
DateCompanyRaisedRole
Feb 2026Erebor Bank▮▮
All 1 deals — valuations, dates and lead flags are a member feature
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Investment activity

Castle Island Ventures joined 1 recorded round in the last two years. Most recently: Erebor Bank (seed round, Feb 2026).

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