0002090786-25-000001.txt : 20251030 0002090786-25-000001.hdr.sgml : 20251030 20251029182917 ACCESSION NUMBER: 0002090786-25-000001 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)(1) FILED AS OF DATE: 20251030 DATE AS OF CHANGE: 20251029 EFFECTIVENESS DATE: 20251030 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Thirdbase Opportunity LP - Series XXI CENTRAL INDEX KEY: 0002090786 ORGANIZATION NAME: EIN: 933829254 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: D SEC ACT: 1933 Act SEC FILE NUMBER: 021-562495 FILM NUMBER: 251431519 BUSINESS ADDRESS: STREET 1: 535 W 23RD STREET STREET 2: UNIT SPH1P CITY: NEW YORK STATE: NY ZIP: 10011 BUSINESS PHONE: 7169810061 MAIL ADDRESS: STREET 1: 535 W 23RD STREET STREET 2: UNIT SPH1P CITY: NEW YORK STATE: NY ZIP: 10011 D 1 primary_doc.xml X0708 D LIVE 0002090786 Thirdbase Opportunity LP - Series XXI 535 W 23RD STREET UNIT SPH1P NEW YORK NY NEW YORK 10011 7169810061 DELAWARE None None Limited Partnership true 2023 n/a Thirdbase Capital GP, LLC 535 W 23rd Street Unit SPH1P New York NY NEW YORK 10011 Promoter General Partner of the Issuer Abhinav Gupta 535 W 23rd Street Unit SPH1P New York NY NEW YORK 10011 Executive Officer Promoter Managing Member of the General Partner of the Issuer Pooled Investment Fund Venture Capital Fund false Decline to Disclose 06b 3C 3C.1 false 2023-10-19 false true false 25000 1500000 1500000 0 false 8 0 0 0 false Thirdbase Opportunity LP - Series XXI /s/ Abhinav Gupta Abhinav Gupta Managing Member of the General Partner of the Issuer 2025-10-29