Mercantile Bank Corporation is a bank holding company. The Company provides commercial banking services, primarily to small- to medium-sized businesses, and retail banking services. It also provides secured and unsecured commercial, construction, mortgage and consumer loans, and accepts checking, savings and time deposits. It also enables customers to conduct certain loan and deposit transactions by personal computer and through mobile applications. It offers courier service to commercial customers and safe deposit boxes. Its subsidiaries include Eastern Michigan Bank, Mercantile Bank, Mercantile Community Partners LLC, Mercantile Bank Capital Trust I, Firstbank Capital Trust I, Firstbank Capital Trust II, Firstbank Capital Trust III, and Firstbank Capital Trust IV, Mercantile Insurance Center, Inc., West Lake Associates, LLC, Eastern Michigan Real Estate Company, and Eastern Michigan Exchange Services, LLC.