MB Financial Bank N.A. is a Chicago-based commercial bank with approximately $15 billion in assets and a more than one hundred year history of building deep and lasting relationships with middle-market companies and individuals. MB Financial Bank offers a full range of powerful financial solutions and the expertise and experience of bankers who are focused on their clients’ success. MB Financial Bank is a wholly-owned subsidiary of MB Financial, Inc. (NASDAQ: MBFI). Member FDIC. Equal Housing Lender.