0001231919-25-000327.txt : 20251016 0001231919-25-000327.hdr.sgml : 20251016 20251016161858 ACCESSION NUMBER: 0001231919-25-000327 CONFORMED SUBMISSION TYPE: D/A 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) ITEM INFORMATION: Section 3(c)(7) FILED AS OF DATE: 20251016 DATE AS OF CHANGE: 20251016 EFFECTIVENESS DATE: 20251016 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Founders Fund IX, LP CENTRAL INDEX KEY: 0001971631 ORGANIZATION NAME: EIN: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: D/A SEC ACT: 1933 Act SEC FILE NUMBER: 021-477928 FILM NUMBER: 251397843 BUSINESS ADDRESS: STREET 1: ONE LETTERMAN DRIVE STREET 2: BUILDING D, 5TH FLOOR CITY: SAN FRANCISCO STATE: CA ZIP: 94129 BUSINESS PHONE: (415) 230-5800 MAIL ADDRESS: STREET 1: ONE LETTERMAN DRIVE STREET 2: BUILDING D, 5TH FLOOR CITY: SAN FRANCISCO STATE: CA ZIP: 94129 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Founders Fund IX Principals Fund, LP CENTRAL INDEX KEY: 0002090410 ORGANIZATION NAME: EIN: 394664199 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: D/A SEC ACT: 1933 Act SEC FILE NUMBER: 021-477928-01 FILM NUMBER: 251397844 BUSINESS ADDRESS: STREET 1: ONE LETTERMAN DRIVE STREET 2: BUILDING D, 5TH FLOOR CITY: SAN FRANCISCO STATE: CA ZIP: 94129 BUSINESS PHONE: (415) 230-5800 MAIL ADDRESS: STREET 1: ONE LETTERMAN DRIVE STREET 2: BUILDING D, 5TH FLOOR CITY: SAN FRANCISCO STATE: CA ZIP: 94129 D/A 1 primary_doc.xml X0708 D/A LIVE 0001971631 Founders Fund IX, LP ONE LETTERMAN DRIVE BUILDING D, 5TH FLOOR SAN FRANCISCO CA CALIFORNIA 94129 (415) 230-5800 DELAWARE None None Limited Partnership true 2023 0002090410 Founders Fund IX Principals Fund, LP ONE LETTERMAN DRIVE BUILDING D, 5TH FLOOR SAN FRANCISCO CA CALIFORNIA 94129 (415) 230-5800 DELAWARE None None Limited Partnership true 2025 N/A N/A The Founders Fund IX Management, LP One Letterman Drive Building D, 5th Floor San Francisco CA CALIFORNIA 94129 Director General Partner of the Issuers Peter Thiel One Letterman Drive Building D, 5th Floor San Francisco CA CALIFORNIA 94129 Director Managing Member of the General Partner of the Issuers Napoleon Ta One Letterman Drive Building D, 5th Floor San Francisco CA CALIFORNIA 94129 Director Managing Member of the General Partner of the Issuers Trae Stephens One Letterman Drive Building D, 5th Floor San Francisco CA CALIFORNIA 94129 Director Managing Member of the General Partner of the Issuers N/A N/A FF Upper Tier GP, LLC One Letterman Drive Building D, 5th Floor San Francisco CA CALIFORNIA 94129 Director General Partner of the General Partner of the Issuers Pooled Investment Fund Venture Capital Fund false Decline to Disclose 06b 3C 3C.1 3C.7 true 0001971631-23-000001 2023-04-07 false true false 0 971584000 971584000 0 The Total Amount Sold includes the General Partner's capital commitment to the Issuers. false 235 0 0 0 The General Partner of the Issuers (or its designee) is entitled to a management fee payable by The Founders Fund IX, LP. false Founders Fund IX, LP /s/ Peter Thiel Peter Thiel Manager of the General Partner's General Partner 2025-10-16 Founders Fund IX Principals Fund, LP /s/ Peter Thiel Peter Thiel Manager of the General Partner's General Partner 2025-10-16