Press Release

M&I Announces Extension of Foreclosure Moratorium

Announces over $7.4 billion of new credit to new and existing customers since mid-November 2008

Marshall & Ilsley Corporation (NYSE:MI) (M&I) today announced it has extended its foreclosure moratorium an additional three months - through September 30, 2010. The initial moratorium was announced on December 18, 2008, as part of M&I's Homeowner Assistance Program. The moratorium is on all owner-occupied residential loans for customers who agree to work in good faith to reach a successful repayment agreement. The moratorium applies to applicable loans in all M&I markets.

M&I's Homeowner Assistance Program also features streamlined assistance programs for potentially distressed homeowners who are identified in advance and proactively offered assistance. It also offers a foreclosure abatement program that features several refinancing options, including term extensions and reduced rates that can be used, as necessary and applicable, to reduce monthly payments.

In addition, M&I continues to extend new credit to new and existing customers. Since the infusion of capital from the U.S. Treasury in mid-November 2008 through April 30, 2010, M&I has extended over $7.4 billion of new credit. (The 'new credit' amount includes new and expanded extensions of credit, or commitments to extend credit, as well as renewals of existing credit where a new promissory note was executed.)

Marshall & Ilsley Corporation (NYSE:MI) is a diversified financial services corporation headquartered in Milwaukee, Wis., with $56.6 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 53 locations throughout Arizona; 33 offices in Indianapolis and nearby communities; 36 offices along Florida's west coast and in central Florida; 15 offices in Kansas City and nearby communities; 26 offices in metropolitan Minneapolis/St. Paul, and one in Duluth, Minn.; 17 offices in the greater St. Louis area; and one office in Las Vegas, Nev. 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 (www.mibank.com or 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.