0002154405-26-000001.txt : 20260917 0002154405-26-000001.hdr.sgml : 20260917 20260917161536 ACCESSION NUMBER: 0002154405-26-000001 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)(7) FILED AS OF DATE: 20260917 DATE AS OF CHANGE: 20260917 EFFECTIVENESS DATE: 20260917 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MAC Opportunistic Master Fund IV, L.P. CENTRAL INDEX KEY: 0002154405 ORGANIZATION NAME: EIN: 415187383 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: D SEC ACT: 1933 Act SEC FILE NUMBER: 021-597976 FILM NUMBER: 261387017 BUSINESS ADDRESS: STREET 1: 900 NORTH MICHIGAN AVENUE, SUITE 1100 CITY: CHICAGO STATE: IL ZIP: 60611 BUSINESS PHONE: 312-506-6500 MAIL ADDRESS: STREET 1: 900 NORTH MICHIGAN AVENUE, SUITE 1100 CITY: CHICAGO STATE: IL ZIP: 60611 D 1 primary_doc.xml X0708 D LIVE 0002154405 MAC Opportunistic Master Fund IV, L.P. 900 NORTH MICHIGAN AVENUE, SUITE 1100 CHICAGO IL ILLINOIS 60611 312-506-6500 DELAWARE None None Limited Partnership true 2026 N/A GCM Investments GP, LLC 900 N. Michigan Avenue Suite 1100 Chicago IL ILLINOIS 60611 Promoter The General Partner of the Issuer ("the GP") N/A GCM Grosvenor L.P. ("Grosvenor") 900 N. Michigan Avenue Suite 1100 Chicago IL ILLINOIS 60611 Promoter Investment Manager N/A GCM, L.L.C. ("GCM") 900 N. Michigan Avenue Suite 1100 Chicago IL ILLINOIS 60611 Promoter Sole General Partner of Grosvenor N/A GCM Grosvenor Holdings, LLC 900 N. Michigan Avenue Suite 1100 Chicago IL ILLINOIS 60611 Promoter Managing Member of GCM Michael J. Sacks 900 N. Michigan Avenue Suite 1100 Chicago IL ILLINOIS 60611 Executive Officer Frederick E. Pollock 900 N. Michigan Avenue Suite 1100 Chicago IL ILLINOIS 60611 Executive Officer Jonathan R. Levin 900 N. Michigan Avenue Suite 1100 Chicago IL ILLINOIS 60611 Executive Officer Cara Fixler 900 N. Michigan Avenue Suite 1100 Chicago IL ILLINOIS 60611 Executive Officer Eric Levin 900 N. Michigan Avenue Suite 1100 Chicago IL ILLINOIS 60611 Executive Officer Paul A. Meister 900 N. Michigan Avenue Suite 1100 Chicago IL ILLINOIS 60611 Executive Officer Pamela L. Bentley 900 N. Michigan Avenue Suite 1100 Chicago IL ILLINOIS 60611 Executive Officer Stacie Selinger 900 N. Michigan Avenue Suite 1100 Chicago IL ILLINOIS 60611 Executive Officer Burke J. Montgomery 900 N. Michigan Avenue Suite 1100 Chicago IL ILLINOIS 60611 Executive Officer Pooled Investment Fund Other Investment Fund false Decline to Disclose 06b 3C 3C.7 false true true true false 0 GRV Securities LLC 138348 GRV Securities LLC 138348 900 N. Michigan Avenue Suite 1100 Chicago IL ILLINOIS 60611 All States false Indefinite 0 Indefinite false 0 0 0 0 false MAC Opportunistic Master Fund IV, L.P. /s/ Girish Kashyap Girish Kashyap Authorized Signatory 2026-09-17