Castle Island Ventures
Venture Capital Exempt reporting adviser
Legal name: Castle Island Management, LLC
AUM
$789.9M
Private fund assets
Private funds
16
Venture Capital 16
Private fund assets
$789.9M
Gross asset value
Employees
—
Last Form D raise
Oct 2025
Most recent fund filing
From SEC Form ADV filing (filed Mar 31, 2026). View on SEC
People(3)
Owners and executive officers named on the firm's SEC Form ADV.
M
N
S
Funds(16)
Private funds reported on Form ADV, with amounts raised from the funds' SEC Form D filings.
| Fund | Type | Gross assets | Raised (Form D) | Investors | Last Form D | Recency |
|---|---|---|---|---|---|---|
| Castle Island Ventures IV Feeder, LP | Venture Capital | $26.1M | — | — | Oct 2025 | Warm |
| Castle Island Ventures IV, LP | Venture Capital | $143.3M | — | — | Sep 2025 | Cool |
| Civ Opportunity Series Co-Invest I, L.P. - (series 9) | Venture Capital | $25.9M | — | — | Mar 2022 | Cold |
| Civ Opportunity Series Co-Invest I, L.P. - (series 8) | Venture Capital | $8.5M | — | — | Mar 2022 | Cold |
| Castle Island Ventures III, L.P. | Venture Capital | $213.6M | — | — | Jan 2022 | Cold |
| Castle Island Ventures Iii-A, L.P. | Venture Capital | $146.4M | — | — | Jan 2022 | Cold |
| Civ Opportunity Series Co-Invest I, L.P. - (series 7) | Venture Capital | $6.5M | — | — | Dec 2021 | Cold |
| Civ Opportunity Series Co-Invest I, L.P. - (series 6) | Venture Capital | $5.4M | — | — | Oct 2021 | Cold |
| Civ Opportunity Series Co-Invest I, L.P. - (series 5) | Venture Capital | $2.5M | — | — | Aug 2021 | Cold |
| Civ Opportunity Series Co-Invest I, L.P. - (series 4) | Venture Capital | $11.3M | — | — | Jul 2021 | Cold |
| Civ Opportunity Series Co-Invest I, L.P. - (series 3) | Venture Capital | $2.3M | — | — | Mar 2021 | Cold |
| Castle Island Ventures Ii-A, L.P. | Venture Capital | $20.4M | — | — | Nov 2020 | Cold |
| Civ Opportunity Series Co-Invest I, L.P. - (series 10) | Venture Capital | $891K | — | — | Jul 2020 | Cold |
| Castle Island Ventures II, L.P. | Venture Capital | $30.6M | — | — | Jun 2020 | Cold |
| Castle Island Ventures I-A, L.P. | Venture Capital | $11.3M | — | — | Aug 2018 | Cold |
Board seats
Companies whose SEC Form D filings name one of this firm's people as a director, matched by name and office ZIP code.
No board seats matched from SEC filings yet.
Regulatory identifiers
- CRD number
- 298999
- SEC file number
- 802-114283
Sources
- SEC Form ADV Oct 14, 2026