X0708 D/A LIVE 0001879775 RichBrook Fund, LP Portfolio A - Agency MBS 540 MADISON AVENUE 26TH FLOOR NEW YORK NY NEW YORK 10022 646-833-1020 DELAWARE None None Other Registered Series of Limited Partnership true 2021 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 0001879775-25-000002 2021-08-27 true true false 0 Indefinite 69200000 Indefinite false 6 0 0 0 false RichBrook Fund, LP Portfolio A - Agency MBS /s/ Andrew Ball Andrew Ball Managing Member of the Issuer's General Partner 2026-08-21