Marshall & Ilsley Corporation Announces Third Quarter 2007 Dividend

Contact:

Greg Smith
Senior V.P., C.E.O.
414-765-7727
or
Dave Urban, V.P., Director of Investor
Relations
414-765-7853
both of Marshall & Ilsley Corporation

MILWAUKEE, Aug. 16 /PRNewswire-FirstCall/ — Marshall & Ilsley Corporation (M&I) today announced its Board of Directors has declared a regular quarterly cash dividend of $0.31 per share on its common stock. The dividend is payable on September 14, 2007, to shareholders of record at the close of business on August 31, 2007.

Marshall & Ilsley Corporation (NYSE:MI) is a diversified financial services corporation headquartered in Milwaukee, Wis., with $58.3 billion in assets. Founded in 1847, M&I Marshall & Ilsley Bank is the largest Wisconsin-based bank, with 192 offices throughout the state. In addition, M&I has 48 locations throughout Arizona; 30 offices along Florida’s west coast and in central Florida; 16 offices in Kansas City and nearby communities; 22 offices in metropolitan Minneapolis/St. Paul, and one in Duluth, Minn.; three offices in Tulsa, Okla.; and one office in Las Vegas, Nev. M&I’s Southwest Bank subsidiary has 17 offices in the greater St. Louis area. Metavante Corporation, a wholly owned subsidiary, provides a full array of technology products and services for the financial services industry. On April 3, 2007, Marshall & Ilsley Corporation announced its plans to split Metavante Corporation and Marshall & Ilsley Corporation into independent publicly traded companies. M&I also provides trust and investment management, equipment leasing, mortgage banking, asset-based lending, financial planning, investments, and insurance services from offices throughout the country and on the Internet (http://www.mibank.com/ or http://www.micorp.com/). M&I’s customer-based approach, internal growth, and strategic acquisitions have made M&I a nationally recognized leader in the financial services industry.