MB Financial, Inc. Announces Schedule for Third Quarter 2008 Earnings Release and Conference Call

MB Financial, Inc., (Nasdaq: MBFI) today announced it will release its third quarter 2008 earnings on Friday, October 31, 2008 at 7:00 a.m. (Central Daylight Time). A conference call will be held the same day at 10:00 a.m. (Central Daylight Time). Individuals interested in listening should call 1.866.831.6267 and enter Passcode #19877722.

This call is being webcast and can be accessed via the Company’s web site at www.mbfinancial.com under Investor Relations.

Following the live webcast, an archived replay of the call will be available on the Company’s website beginning approximately two hours after the call ends. The replay will remain available through November 13, 2008.

MBFI is the $8.4 billion holding company for MB Financial Bank, N.A. MB Financial Bank is a locally operated financial institution, which has been delivering competitive personalized service for more than 95 years to privately-owned, middle-market companies as well as to individuals who live and work in the Chicago metropolitan area.

This news release may contain forward-looking statements that involve risk and uncertainties, with respect to the results of operations and other uncertainties that may not be known or anticipated by the Company. While management of the Company uses its best efforts to be accurate in making forward-looking statements, any such statements are subject to risks and uncertainties that could cause the Company’s actual results to vary materially from the future results indicated in such forward-looking statements.