Data / Investment advisers / Massachusetts / Castle Island Ventures
Castle Island Ventures, Boston, MA: exempt reporting adviser with 16 private funds
Updated November 7, 2026. Source: the SEC's Form ADV data files for investment advisers.
Castle Island Ventures is an exempt reporting adviser with its main office in Boston, Massachusetts and reports 16 private funds in its Form ADV filed March 31, 2026.
The request: Watch Castle Island Ventures (CRD number 298999): each new Form ADV amendment, with AUM, clients and private funds. $10 of work on sign-up, no card.
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- Registration
- Exempt reporting adviser
- CRD number
- 298999
- SEC file number
- 802-114283
- SEC status
- ERA, Active, effective October 12, 2018
- Legal name
- Castle Island Management, LLC
- Main office
- 374 Congress Street Suite 301, Boston, MA 02210
- Phone
- (508) 202-0432
- Website
- castleisland.vc
- Form of organization
- Limited Liability Company
- Private funds
- 16: 16 venture capital funds
- Gross assets of private funds
- $789,894,141
- Other offices
- 2
- Form ADV Item 11 disclosures
- None reported
- Latest Form ADV filing
- March 31, 2026
- SEC record
- Investment Adviser Public Disclosure
Other advisers in Boston
| Adviser | City | AUM | Private funds | Source |
|---|---|---|---|---|
| Pillar Companies Management, LLC | Boston | Not listed | 21 | adviserinfo.sec.gov |
| Pleasant Bay Capital Partners, LLC | Boston | Not listed | 21 | adviserinfo.sec.gov |
| Accomplice Management LLC | Boston | Not listed | 20 | adviserinfo.sec.gov |
| 406 Ventures Management, LLC | Boston | Not listed | 17 | adviserinfo.sec.gov |
| Nextview Ventures | Boston | Not listed | 17 | adviserinfo.sec.gov |
| Companyon Ventures | Boston | Not listed | 16 | adviserinfo.sec.gov |
| Wavecrest Management Company, LLC | Boston | Not listed | 14 | adviserinfo.sec.gov |
| Longwood Management LLC | Boston | Not listed | 12 | adviserinfo.sec.gov |
Also on SpecStream
- Investment advisers in Boston, MA
- Investment advisers in Massachusetts
- Advisers that manage private funds
- Castle Island Ventures on the SEC's adviser search
Public data published by the US Securities and Exchange Commission (US government work). Advisers report these values themselves in Form ADV, and neither the SEC nor the states approve or guarantee them. AUM is regulatory assets under management as the adviser reported it in Form ADV item 5.F, which can differ from the AUM a firm quotes elsewhere. Exempt reporting advisers do not report AUM. Office address, phone and website are the adviser's main office as filed; a firm that files its main office as a private residence shows no street address or phone. An Item 11 disclosure is a reported event, not a finding about the firm today. Details for each firm are on the SEC's Investment Adviser Public Disclosure site. This page uses SEC data and is not endorsed or certified by the SEC. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.