UnannouncedVCInvestor

Castle Island Ventures

Startup rounds since 2019 with a Castle Island Ventures investor on the board, and the firm's own fund filings.

Raises
18
since 2019
Unannounced
1
no announcement found, of those filed since 2025
Funds
7
fund filings under the firm's name

Rounds

  1. Felix Technologies Inc.$87.8MAnnounced1 Sep 2026 · Miami, FL · Technology
  2. Cyclops, Inc.$20MAnnounced15 Jul 2026 · Miami, FL · Technology
  3. Attestiv Inc.$834KUnannounced · 133 days6 May 2026 · Lehi, UT · Technology
  4. Valinor Digital Inc.$25MAnnounced 53 days later5 Feb 2026 · New York, NY
  5. Cyclops, Inc.$8MUnclear24 Nov 2025 · Miami, FL · Technology
  6. Felix Technologies Inc.$33.4MAnnounced9 Apr 2025 · Miami, FL · Technology
  7. Felix Technologies Inc.$5.01MFiled before 202518 Sep 2024 · San Francisco, CA · Technology
  8. Felix Technologies Inc.$11.2MFiled before 202529 Jan 2024 · San Francisco, CA · Technology
  9. Attestiv Inc.$1.22MFiled before 202518 Jul 2023 · Lehi, UT · Technology
  10. TYB, Inc.$9.75MFiled before 20256 Jun 2022 · Tucson, AZ · Technology
  11. TYB, Inc.$2.22MFiled before 20259 Nov 2021 · Tucson, AZ · Technology
  12. Notabene, Inc.$9.26MFiled before 202526 Aug 2021 · Brooklyn, NY · Technology
  13. Notabene, Inc.$2.3MFiled before 202526 Aug 2021 · Brooklyn, NY · Technology
  14. Coin Metrics Inc.$15MFiled before 202512 May 2021 · Boston, MA · Technology
  15. Attestiv Inc.$1.02MFiled before 202530 Apr 2021 · Natick, MA · Technology
  16. Manetu, Inc.$2.37MFiled before 20254 Mar 2021 · Ridgewood, NJ · Technology
  17. Attestiv Inc.$100KFiled before 202528 Aug 2020 · Natick, MA · Technology
  18. Attestiv Inc.$1.75MFiled before 202520 Aug 2019 · Natick, MA · Technology

By year

YearRaisesUnannounced
202641
202520
20242—
20231—
20221—
20216—
20201—
20191—

Raises are checked for an announcement from 2025 on.

Funds

The firm's own fund filings, each at its latest filing.

FundFiledSizeRaised
Castle Island Ventures IV Feeder, L.P.30 Oct 2025Open-ended—
Castle Island Ventures IV, L.P.29 Sep 2025Open-ended—
Castle Island Ventures III-A, L.P.27 Jan 2022Open-ended—
Castle Island Ventures III, L.P.27 Jan 2022Open-ended—
Castle Island Ventures II-A, L.P.17 Nov 2020Open-ended—
Castle Island Ventures II, L.P.23 Jun 2020Open-ended—
Castle Island Ventures II-A, L.P.23 Jun 2020Open-ended—

Listed because a Castle Island Ventures fund's filing names a director of each company. A name match is not a verified identity.