The Purebred Arabian stud book is actually owned by the Purebred Arabian Trust (PAT), which grants AHA an exclusive license to manage the registry. Policies and procedures for registration of animals are set by the Registration Commission, a joint committee made up of representatives of both PAT and AHA. The membership of AHA has no authority over the purebred registry other than via its ability to elect representatives to the commission. The Half-Arabian/Anglo-Arabian registry is owned by the AHA.
