X0306 4 2012-12-08 0001139812 MB FINANCIAL INC /MD MBFI 0001256728 FIELD BURTON J C/O MB FINANCIAL, INC. 6111 N. RIVER ROAD ROSEMONT IL 60018 1 1 Vice President Exec. Officer of Subsidiary Common Stock 2012-12-08 4 J 0 3730 19.15 D 127628 D Common Stock 970 I By 401(k) Common Stock 8419 I By Deferred Comp Plan Common Stock 8550 I By Ira Stock Option (Right to Buy) 40.00 2011-07-25 2017-07-25 Common Stock 2370 2370 D Stock Option (Right to Buy) 32.89 2011-07-25 2017-07-25 Common Stock 2900 2900 D Stock Option (Right to Buy) 29.00 2012-06-25 2018-06-25 Common Stock 5556 5556 D Stock Option (Right to Buy) 24.65 2012-06-25 2018-06-25 Common Stock 6805 6805 D Stock Option (Right to Buy) 20.40 2013-08-29 2022-08-29 Common Stock 1274 1274 D Performance Share Units 0 Common Stock 1465 1465 D Stock Option (Right to Buy) 26.8933 2007-07-23 2013-07-23 Common Stock 6900 6900 D Stock Option (Right to Buy) 37.06 2008-08-24 2014-08-24 Common Stock 4039 4039 D Stock Option (Right to Buy) 42.70 2009-07-20 2015-07-20 Common Stock 4196 4196 D Stock Option (Right to Buy) 35.77 2010-07-26 2016-07-26 Common Stock 2463 2463 D Stock Option (Right to Buy) 40.00 2010-07-26 2016-07-26 Common Stock 1797 1797 D Transaction represents withholding of shares to satisfy tax withholding obligation upon vesting of restricted stock. Grant to reporting person of option to purchase shares of common stock under Issuer's Amended and Restated Omnibus Incentive Plan. The option is 100% vested. Grant to reporting person of option to purchase shares of common stock under Issuer's Amended and Restated Omnibus Incentive Plan. The option vests ratably over 4 years (25% per year). Performance based vesting /s/ Doria L. Koros, Attorney in Fact for Mr. Field 2013-01-07