X0202 4 2006-08-25 1 0000717837 FIRST OAK BROOK BANCSHARES INC FOBB 0001243644 STEIN MICHAEL 1400 SIXTEENTH STREET OAK BROOK IL 60523 1 0 0 0 Common Stock 2006-08-25 4 D 0 9917 0.00 D 0 D Common Stock 2006-08-25 4 D 0 2250 0.00 D 0 D Formula Stock Option (Right to Buy) 16.00 2006-08-25 4 D 0 3000 0.00 D 1999-04-21 2008-04-21 Common 3000 0 D Formula Stock Option (Right to Buy) 15.833 2006-08-25 4 D 0 1500 0.00 D 1999-05-05 2008-05-05 Common 1500 0 D Formula Stock Option (Right to Buy) 12.833 2006-08-25 4 D 0 750 0.00 D 2000-05-04 2009-05-04 Common 750 0 D Stock Options (Right to Buy) 10.417 2006-08-25 4 D 0 750 0.00 D 2001-05-02 2010-05-02 Common 750 0 D Stock Options (Right to Buy) 12.933 2006-08-25 4 D 0 750 0.00 D 2002-05-08 2011-05-08 Common 750 0 D Stock Options (Right to Buy) 22.667 2006-08-25 4 D 0 750 0.00 D 2003-05-07 2012-05-07 Common 750 0 D Stock Options (Right to Buy) 21.50 2006-08-25 4 D 0 1500 0.00 D 2004-05-06 2013-05-06 Common 1500 0 D Stock Options (Right to Buy) 29.83 2006-08-25 4 D 0 1500 0.00 D 2005-05-04 2014-05-04 Common 1500 0 D Stock Options (Right to Buy) 28.20 2006-08-25 4 D 0 1500 0.00 D 2006-05-10 2015-05-10 Common 1500 0 D These DSUs were assumed by MBFI pursuant to the merger agreement and replaced with DSUs of MBFI common stock. Disposed of pursuant to merger agreement between FOBB and MB Financial, Inc. (MBFI) in exchange for $37.43 per share of value in either cash, MBFi common stock, or a combination of both. This option was assumed by MBFI pursuant to the merger agreement and replaced with an option to purchase shares of MBFI common stock. Michael Stein, BY: Carole Jurkash, his attorney-in-fact 2006-08-28