X0708 D/A LIVE 0001708888 Fourthstone Master Opportunity Fund Ltd. MAPLES CORPORATE SERVICES LIMITED GRAND CAYMAN E9 CAYMAN ISLANDS KY1-1104 1-345-949-8066 DELAWARE Fourthstone Master opportunity Fund Ltd. Corporation true Amy Stone 575 MARYVILLE CENTRE DR. SUITE 110 St. Louis MO MISSOURI 63141 Director Director of issuer. Louis P. Stone 575 MARYVILLE CENTRE DR. SUITE 110 St. Louis MO MISSOURI 63141 Director Director of issuer. n/a Fourthstone LLC 575 MARYVILLE CENTRE DR. SUITE 110 St. Louis MO MISSOURI 63141 Promoter Investment manager of issuer. Pooled Investment Fund Hedge Fund false Decline to Disclose 06b 3C 3C.1 true 0001708888-25-000001 true true true false 1000000 Indefinite 0 Indefinite false 0 0 0 0 true false Fourthstone Master Opportunity Fund Ltd. /s/ Robin Anderson Robin Anderson Chief Compliance Officer 2026-07-10