On April 27, 2017, MB Financial, Inc. issued a release containing its first quarter 2017 results of operations. A copy of the release, including unaudited financial information released as a part thereof, is attached as Exhibit 99 to this Current Report on Form 8-K and incorporated by reference herein.

Item 9.01 Financial Statements and Exhibits

Exhibit 99

Release of MB Financial, Inc.

About MB FINANCIAL, INC. (NASDAQ:MBFI)

MB Financial, Inc. is a financial holding company. The Company, through its bank subsidiary, MB Financial Bank, N.A., offers a range of financial services to small and middle market businesses, and individuals. The Company’s segments include banking, leasing and mortgage banking. Its banking segment includes lending and deposit gathering activities. It includes four primary lines of business: commercial banking, lease banking, retail banking and wealth management. Its leasing segment includes lease originations and related services offered through the Company’s leasing subsidiaries: LaSalle Systems Leasing, Inc., Celtic Leasing Corp. and MB Equipment Finance, LLC. Its mortgage banking segment originates residential mortgage loans for sale to investors through its retail and third-party origination channels, as well as residential mortgage loans held in its loan portfolio. The mortgage banking segment also services residential mortgage loans owned by investors and the Company.

MB FINANCIAL, INC. (NASDAQ:MBFI) Recent Trading Information

MB FINANCIAL, INC. (NASDAQ:MBFI) closed its last trading session down -0.37 at 43.09 with 345,657 shares trading hands.