X0708 D/A LIVE 0002086708 Hack Fund IV-B Feeder LP 251 LYTTON AVENUE SUITE 200 PALO ALTO CA CALIFORNIA 94301 408-345-5807 CAYMAN ISLANDS None None Limited Partnership true 2025 N/A HACK FUND IV GP LLC 251 LYTTON AVENUE, SUITE 200 PALO ALTO CA CALIFORNIA 94301 Promoter GENERAL PARTNER OF THE ISSUER ALEXANDER PACK 251 LYTTON AVENUE, SUITE 200 PALO ALTO CA CALIFORNIA 94301 Promoter MANAGER OF THE GENERAL PARTNER OF THE ISSUER Pooled Investment Fund Private Equity Fund false Decline to Disclose 06b 3C 3C.7 true 0001470831-25-000286 2025-11-04 false true true false 0 Indefinite 58850000 Indefinite false 20 0 0 0 true false Hack Fund IV-B Feeder LP /S/ ALEXANDER PACK ALEXANDER PACK MANAGER OF THE GENERAL PARTNER OF THE ISSUER 2026-11-03