0002054936-25-000039.txt : 20250423 0002054936-25-000039.hdr.sgml : 20250423 20250422194324 ACCESSION NUMBER: 0002054936-25-000039 CONFORMED SUBMISSION TYPE: D/A PUBLIC DOCUMENT COUNT: 1 ITEM INFORMATION: 06b ITEM INFORMATION: Investment Company Act Section 3(c) ITEM INFORMATION: Section 3(c)(1) ITEM INFORMATION: Section 3(c)(7) FILED AS OF DATE: 20250423 DATE AS OF CHANGE: 20250422 EFFECTIVENESS DATE: 20250423 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Arrowstreet (Delaware) Alpha Extension Fund L.P. CENTRAL INDEX KEY: 0001842537 ORGANIZATION NAME: EIN: 853847568 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: D/A SEC ACT: 1933 Act SEC FILE NUMBER: 021-395513 FILM NUMBER: 25858949 BUSINESS ADDRESS: STREET 1: 200 CLARENDON STREET STREET 2: FLOOR 30 CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 6179190000 MAIL ADDRESS: STREET 1: 200 CLARENDON STREET STREET 2: FLOOR 30 CITY: BOSTON STATE: MA ZIP: 02116 D/A 1 primary_doc.xml X0708 D/A LIVE 0001842537 Arrowstreet (Delaware) Alpha Extension Fund L.P. 200 Clarendon Street, 30th Floor Boston MA MASSACHUSETTS 02116 (617) 919-0000 DELAWARE None None Limited Partnership true 2020 Limited Partnership Arrowstreet Capital 200 Clarendon Street Floor 30 Boston MA MASSACHUSETTS 02116 Promoter in its capacity as investment manager of the Issuer. LLC Arrowstreet Capital Brattle GP 200 Clarendon Street Boston MA MASSACHUSETTS 02116 Executive Officer in its capacity as the general partner of the issuer Pooled Investment Fund Hedge Fund false Decline to Disclose 06b 3C 3C.1 3C.7 true 0001594363-24-000032 2021-04-15 true true false 100000 none None None None none none none XX Unknown none All States false Indefinite 2544403094 Indefinite false 2 0 0 0 false Arrowstreet (Delaware) Alpha Extension Fund L.P. Brian Neumann Brian Neumann Partner, Head of Funds Group 2025-04-22