Marshall & Ilsley Corporation Files Registration Statement Covering Six Million Shares

Shares Could Be Used for Acquisitions by M&I and Subsidiaries


MILWAUKEE, May 8 /PRNewswire-FirstCall/ — Marshall & Ilsley Corporation (NYSE:MI) (M&I) today announced it has filed a registration statement on Form S-4 covering an aggregate of up to six million shares which could be used for possible future acquisitions by M&I and its subsidiaries. This registration statement replaces a registration statement which was no longer available following the separation of Metavante Corporation and Marshall & Ilsley Corporation in November 2007.


The acquisition shelf registration statement filed today will enable Marshall & Ilsley Corporation to issue shares of its common stock in one or more possible future acquisition transactions. These transactions may include the acquisition of assets, businesses or securities, whether by purchase, merger or any other form of business combination. There is no current commitment to issue any of the shares registered.


The registration statement related to these securities has been filed with the Securities and Exchange Commission but has not yet become effective. These securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. A copy of the prospectus and any prospectus supplement, when available, may be obtained from the Securities and Exchange Commission’s website at www.sec.gov or from Marshall & Ilsley Corporation by contacting its Secretary at 770 North Water Street, Milwaukee, Wisconsin 53202. This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such state.


Marshall & Ilsley Corporation (NYSE:MI) is a diversified financial services corporation headquartered in Milwaukee, Wis., with $63.4 billion in assets. Founded in 1847, M&I Marshall & Ilsley Bank is the largest Wisconsin- based bank, with 193 offices throughout the state. In addition, M&I has 51 locations throughout Arizona; 32 offices in Indianapolis and nearby communities; 31 offices along Florida’s west coast and in central Florida; 15 offices in Kansas City and nearby communities; 24 offices in metropolitan Minneapolis/St. Paul, and one in Duluth, Minn.; and one office in Las Vegas, Nev. M&I’s Southwest Bank subsidiary has 17 offices in the greater St. Louis area. 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.


First Call Analyst:
FCMN Contact: sara.schmitz@micorp.com


Source: Marshall & Ilsley Corporation


CONTACT: Randall J. Erickson of Marshall & Ilsley Corporation,
+1-414-765-7809


Web site: http://www.micorp.com/
http://www.mibank.com/