X0303 4 2011-04-29 0001139812 MB FINANCIAL INC /MD MBFI 0001374167 Peterson Susan Gayle C/O MB FINANCIAL, INC. 6111 NORTH RIVER ROAD ROSEMONT IL 60018 1 Exec. Officer of Subsidiary Common Stock 2011-04-29 4 A 0 50 20.69 A 5564 I By Deferred Comp Plan Common Stock 2011-04-29 4 A 0 13 20.69 A 56418 D Common Stock 3194 I By 401(k) Plan Stock Option (Right to Buy) 40.00 2011-07-25 2017-07-25 Common Stock 4856 4856 D Stock Option (Right to Buy) 32.89 2011-07-25 2017-07-25 Common Stock 5942 5942 D Stock Option (Right to Buy) 29.00 2012-06-25 2018-06-25 Common Stock 13118 13118 D Stock Option (Right to Buy) 24.65 2012-06-25 2018-06-25 Common Stock 16068 16068 D Stock Option (Right to Buy) 28.46 2006-08-25 2012-01-31 Common Stock 1550 1550 D Stock Option (Right to Buy) 26.88 2006-08-25 2013-01-24 Common Stock 1550 1550 D Stock Option (Right to Buy) 32.60 2006-08-25 2014-01-27 Common Stock 3101 3101 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. Grant to reporting person of option to purchase shares of common stock under Issuer's Amended and Restated Omnibus Incentive Plan. This option becomes vested on 07/25/2011. Grant to reporting person of option to purchase shares of common stock under Issuer's Amended and Restated Omnibus Incentive Plan. This option becomes vested on 06/25/2012. Received in the Merger in exchange for an option to purchase 1,500 shares of FOBB common stock at an exercise price of $29.42 per share. Received in the Merger in exchange for an option to purchase 1,500 shares of FOBB common stock at an exercise price of $27.78 per share. Received in the Merger in exchange for an option to purchase 3,000 shares of FOBB common stock at an exercise price of $33.70 per share. /s/ Doria L. Koros, attorney-in-fact for Ms. Peterson 2011-05-03