| Marshall & Ilsley Corporation (M&I) is a bank holding company. M&I provides diversified financial services to a variety of corporate, institutional, government and individual customers. M&I's principal assets are the stock of its bank and nonbank subsidiaries, which, as of February 15, 2009, consisted of five bank and trust subsidiaries and a number of companies engaged in businesses that are closely-related or incidental to the business of banking. M&I provides its subsidiaries with financial and managerial assistance in area, such as budgeting, tax planning, auditing, compliance assistance, asset and liability management, investment administration and portfolio planning, business development, advertising and human resources management. M&I has four reportable segments: Commercial Banking, Community Banking, Wealth Management and Treasury. |