MIDDLEFIELD, Ohio-(BUSINESS WIRE)-Middlefield Banc Corp. (NASDAQ: MBCN) ("Middlefield") today announced that it has completed its merger with Liberty Bank, N.A. Simultaneous with the close of the transaction, Middlefield added William A. Valerian and Thomas W. Bevan from the Liberty Bank Board of Directors to the Middlefield Board of Directors. The merger, which was previously announced [...]