X0303 4/A 2011-03-18 2011-03-21 0001139812 MB FINANCIAL INC /MD MBFI 0001244438 YORK JILL E C/O MB FINANCIAL, INC. 6111 NORTH RIVER ROAD ROSEMONT IL 60018 1 Vice President and CFO Common Stock 2011-03-18 4 A 0 186 19.52 A 69839 D This transaction represents the salary adjustment paid in fully vested shares of MBFI common stock to the reporting person under the Issuer's Amended and Restated Omnibus Incentive Plan. As a condition of receiving the salary adjustment, the reporting person entered into an agreement with the Company providing that the reporting person may not sell or otherwise transfer the shares of salary stock for two years, except in the event of disability or death. The number of shares acquired in the transaction were incorrectly stated in the initial Form 4. /s/ Doria L. Koros, Attorney-in-Fact for Ms. York 2011-03-22