Castle Island Ventures
Castle Island Ventures is a venture capital investor based in Boston, United States. It reports about $790m in private-fund assets across 16 private funds to the US Securities and Exchange Commission (Form ADV, October 2026).
Part of the 311 Institute Global Investors Directory (311institute.com). Last updated .
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Questions and answers
What kind of investor is Castle Island Ventures?
Castle Island Ventures is a venture capital investor based in Boston, United States.
Where is Castle Island Ventures based?
Castle Island Ventures is headquartered in Boston, United States, according to its filing with the US Securities and Exchange Commission.
How much does Castle Island Ventures manage?
It reports about $790m in private-fund assets across 16 private funds to the US Securities and Exchange Commission (Form ADV, October 2026).
Source: US Securities and Exchange Commission adviser record (Form ADV and Form D filings), as of October 2026.
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