Middlefield Banc Corp. Common Stock, also called Middlefield Bank, is a holding company, which engages in the provision of personal and commercial banking solutions. Read More The company offers checking, savings, negotiable order of withdrawal accounts, money market accounts, time certificates of deposit, commercial loans, real estate loans, a variety of consumer loans, safe deposit facilities, and travelers' checks services. It also provides mortgage and investment services. The company was founded in 1988 and is headquartered in Middlefield, OH.