Definition - What does Branch Office mean?
Branch Office is an office of a member firm and is required to display the name of the member firm and is any office in which the member conducts securities business outside of its main office.
Testopedia explains Branch Office
Branch offices fall under the jurisdiction of the Office of Supervisory Jurisdiction (OSJ) of the firm. Each firm is required to have at least 2 licensed principals, although the branches are not required to have an on-sight principal. Additionally, the firm's are required to pay dues to FINRA based in part on the number of branch offices it maintains.