MainStreet Bancshares, Inc. is the bank holding company for MainStreet Bank, providing banking products and services to individuals, small to medium-sized businesses, and professional service organizations. Its offerings include deposit accounts, cash management, commercial and consumer loans, and digital banking services. The company operates in Herndon, Fairfax, McLean, Clarendon, Leesburg, Middleburg, Virginia, and Washington D.C., as well as automated teller machines. Formerly known as MainStreet Bank (Fairfax, VA), it changed its name to MainStreet Bancshares, Inc. in July 2016, was incorporated in 2003, and is headquartered in Fairfax, Virginia.