X0303 4 2011-04-29 0001399315 MARSHALL & ILSLEY CORP MI 0001104634 ONEILL THOMAS J/WI/ 770 N. WATER ST. MILWAUKEE WI 53202 1 Senior Vice President Common Stock 2011-04-29 4 A 0 3493 0 A 282202 D Common Stock 2011-04-29 4 F 0 1499 8.17 D 280703 D Common Stock 62287.4101 I By Deferred Compensation Plan Common Stock 6654.1358 I By Retirement Program Shares of Marshall & Ilsley Corporation (the "Company") common stock acquired as stock salary by the Reporting Person under the Company's 2010 Equity Incentive Plan. The shares were fully vested at the time of grant, but are subject to transfer restrictions. One third of the stock salary shares will be released from the transfer restrictions on each of June 30, 2012, June 30, 2013 and June 30, 2014. For more information, please see the Current Report on Form 8-K filed by the Company on December 29, 2009. /s/ Jodi W. Rosenthal, as attorney in fact 2011-05-03