David J. Lubar Nominated to Marshall & Ilsley Corporation Board of Directors

MILWAUKEE, Feb. 23 /PRNewswire-FirstCall/ — Marshall & Ilsley Corporation (M&I) today announced its Board of Directors has nominated David J. Lubar to stand for election as a director of the Corporation at its annual shareholders meeting on April 24, 2007.

Lubar is president of Lubar & Co. Incorporated, a private equity investment firm and family office, located in Milwaukee. He earned a bachelor’s degree from Bowdoin College in Brunswick, Maine, and an MBA from the University of Minnesota.

Lubar serves on the boards of directors for Lubar & Co., Lake Express, Marshall Erdman & Associates, Rockland Industrial Products, Wrightwood Capital, the Milwaukee Brewers Baseball Club, the Wisconsin Policy Research Institute, and the Metropolitan Milwaukee Association of Commerce. In addition, he serves on the advisory board for the University of Wisconsin- Milwaukee School of Business.

Marshall & Ilsley Corporation (NYSE:MI) is a diversified financial services corporation headquartered in Milwaukee, Wis., with $56.2 billion in assets. Founded in 1847, M&I Marshall & Ilsley Bank is the largest Wisconsin- based bank, with 194 offices throughout the state. In addition, M&I has 45 locations throughout Arizona; 17 offices in Kansas City and nearby communities; 17 offices on Florida’s west coast; 17 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 16 offices in the greater St. Louis area. In December 2006, M&I signed a definitive agreement to acquire United Heritage Bankshares of Florida with 13 locations in the Orlando area. The transaction, expected to be completed in the second quarter of 2007, will give M&I 30 branches along Florida’s west coast and central Florida. Metavante Corporation, a wholly owned subsidiary, provides a full array of technology products and services for the financial services industry. 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.