X0708 D/A LIVE 0001947773 RichBrook Fund, LP Portfolio B - Illiquid MBS/ABS 540 MADISON AVENUE 26TH FLOOR NEW YORK NY NEW YORK 10022 646-833-1020 DELAWARE None None Limited Partnership true 2022 Andrew Ball c/o RichBrook Advisors LP 540 Madison Avenue, 26th Floor New York NY NEW YORK 10022 Executive Officer Managing Member of the Issuer's General Partner Vlad Kotlyarsky c/o RichBrook Advisors LP 540 Madison Avenue, 26th Floor New York NY NEW YORK 10022 Executive Officer Managing Member of the Issuer's General Partner N/A RichBrook GP, LLC c/o RichBrook Advisors LP 540 Madison Avenue, 26th Floor New York NY NEW YORK 10022 Promoter General Partner of the Issuer N/A RichBrook Advisors, LP 540 Madison Avenue 26th Floor New York NY NEW YORK 10022 Promoter Investment Advisor of the Issuer Pooled Investment Fund Hedge Fund false Decline to Disclose 06b 3C 3C.7 true 0001947773-25-000002 2022-09-12 true true false 0 Indefinite 11002000 Indefinite false 3 0 0 0 false RichBrook Fund, LP Portfolio B - Illiquid MBS/ABS /s/ Edward Russell Edward Russell Chief Compliance Officer 2026-08-21