EXHIBIT 21 SUBSIDIARIES OF REGISTRANT SUBSIDIARY STATE OF INCORPORATION - -------------------------------------------------------------------------------- Sturgis Bank & Trust Company Michigan Oakleaf Financial Services, Inc. (1) Michigan Ludington Service Corporation (1) Michigan First Michiana Development Corporation of Sturgis (1) Michigan Oak Mortgage, LLC (2) Michigan (1) A subsidiary of Sturgis Bank & Trust Company (2) A subsidiary of Sturgis Bank & Trust Company (99%) and Oakleaf Financial Services, Inc. (1%)