0002060993-25-000002.txt : 20250929 0002060993-25-000002.hdr.sgml : 20250929 20250929173023 ACCESSION NUMBER: 0002060993-25-000002 CONFORMED SUBMISSION TYPE: D PUBLIC DOCUMENT COUNT: 1 ITEM INFORMATION: Rule 506(b) provides a "safer harbor" for a private offering ITEM INFORMATION: Investment Company Act Section 3(c) ITEM INFORMATION: Section 3(c)(7) FILED AS OF DATE: 20250929 DATE AS OF CHANGE: 20250929 EFFECTIVENESS DATE: 20250929 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Castle Island Ventures IV, L.P. CENTRAL INDEX KEY: 0002060993 ORGANIZATION NAME: EIN: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: D SEC ACT: 1933 Act SEC FILE NUMBER: 021-559173 FILM NUMBER: 251357486 BUSINESS ADDRESS: STREET 1: 350 LINCOLN STREET, #2400 CITY: HINGHAM STATE: MA ZIP: 02043 BUSINESS PHONE: (617) 401-4017 MAIL ADDRESS: STREET 1: 350 LINCOLN STREET, #2400 CITY: HINGHAM STATE: MA ZIP: 02043 D 1 primary_doc.xml X0708 D LIVE 0002060993 Castle Island Ventures IV, L.P. 374 Congress Street, Suite 301 Boston MA MASSACHUSETTS 02210 (508) 202-0432 DELAWARE None None Limited Partnership true 2025 Management Company Castle Island Management, LLC 374 Congress Street, Suite 301 Boston MA MASSACHUSETTS 02210 Promoter Management Company of the Issuer General Partner Castle Island GP IV, LLC 374 Congress Street, Suite 301 Boston MA MASSACHUSETTS 02210 Promoter General Partner of the Issuer Matthew Walsh 374 Congress Street, Suite 301 Boston MA MASSACHUSETTS 02210 Executive Officer Managing Member of the General Partner of the Issuer Nicolas Carter 374 Congress Street, Suite 301 Boston MA MASSACHUSETTS 02210 Executive Officer Managing Member of the General Partner of the Issuer Sean Judge 374 Congress Street, Suite 301 Boston MA MASSACHUSETTS 02210 Executive Officer Managing Member of the General Partner of the Issuer Pooled Investment Fund Venture Capital Fund false Decline to Disclose 06b 3C 3C.7 false true false true false 0 Indefinite 0 Indefinite false 0 0 0 0 true The Issuer's General Partner or an affiliate of the Issuer's General Partner may be entitled to receive a management fee in accordance with the Issuer's governing documentation, as amended from time to time. false Castle Island Ventures IV, L.P. /s/ Matthew Walsh Matthew Walsh Managing Member of the GP of the Issuer 2025-09-29