Sec Form 4 Filing - FEIGER MITCHELL @ MB FINANCIAL INC /MD - 2018-06-06

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person FEIGER MITCHELL 2. Issuer Name and Ticker or Trading Symbol MB FINANCIAL INC /MD [ MBFI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) President and CEO (Last) (First) (Middle) C/O MB FINANCIAL, INC., 6111 NORTH RIVER ROAD 3. Date of Earliest Transaction (MM/DD/YY) 06/06/2018 (Street) ROSEMONT, IL60018 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 06/06/2018 M 4,056 A $ 24.65 151,068 D Common Stock 06/06/2018 M 62,219 A $ 24.65 213,287 D Common Stock 06/06/2018 M 54,108 A $ 29 267,395 D Common Stock 06/06/2018 F 85,322 ( 1 ) D $ 51.15 182,073 D Common Stock 16,327 I By 401(k) Common Stock 1,408 I By Children Common Stock 7,994 I By Deferred Comp Plan Common Stock 15,775 I By Ira Common Stock 12,148 I By Spouse's IRA Common Stock 28,180 I By Trust Common Stock 146,239 I Revocable Living Trust Common Stock 65,281 I Spouse's Revocable Living Trust

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Option (Right to Buy) $ 24.65 06/06/2018 M 4,056 06/25/2012 06/25/2018( 2 ) Common Stock 4,056 $ 0 62,219 D Stock Option (Right to Buy) $ 24.65 06/06/2018 M 62,219 06/25/2012 06/25/2018( 2 ) Common Stock 62,219 $ 0 0 D Stock Option (Right to Buy) $ 29 06/06/2018 M 54,108 06/25/2012 06/25/2018( 2 ) Common Stock 54,108 $ 0 0 D Stock Option (Right to Buy) $ 20.4 08/29/2013( 3 ) 08/29/2022 Common Stock 23,124 23,124 D Stock Option (Right to Buy) $ 27.09 08/28/2014( 3 ) 08/28/2023 Common Stock 18,988 18,988 D Stock Option (Right to Buy) $ 29.8 02/26/2015( 3 ) 02/26/2024( 3 ) Common Stock 19,648 19,648 D Stock Option (Right to Buy) $ 31.26 02/25/2016( 4 ) 02/25/2025( 4 ) Common Stock 14,034 14,034 D Stock Option (Right to Buy) $ 30.33 02/24/2017( 5 ) 02/24/2026( 5 ) Common Stock 20,480 20,480 D Performance Share Units $ 0 ( 6 ) ( 6 ) Common Stock 23,330 23,330 D Restricted Stock Units $ 0 ( 7 ) ( 7 ) Common Stock 9,332 9,332 D Stock Option (Right to Buy) $ 45.67 ( 8 ) ( 8 ) Common Stock 16,968 16,968 D Performance Share Units $ 0 ( 6 ) ( 6 ) Common Stock 17,722 17,722 D Restricted Stock Units $ 0 ( 9 ) ( 9 ) Common Stock 1,697 1,697 D Restricted Stock Units $ 0 ( 10 ) ( 10 ) Common Stock 10,633 10,633 D Stock Option (Right to Buy) $ 41.01 ( 11 ) ( 11 ) Common Stock 20,161 20,161 D Performance Share Units $ 0 ( 6 ) ( 6 ) Common Stock 23,689 23,689 D Restricted Stock Units $ 0 ( 12 ) ( 12 ) Common Stock 18,951 18,951 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other FEIGER MITCHELL C/O MB FINANCIAL, INC. 6111 NORTH RIVER ROAD ROSEMONT, IL60018 X President and CEO Signatures /s/ Doria L. Koros, Attorney-in-fact for Mr. Feiger 06/08/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Transaction represents withholding of shares based on a net exercise to satisfy tax withholding obligation and exercise cost. ( 2 )Grant to reporting person of option to purchase shares of common stock und er Issuer's 1997 Omnibus Incentive Plan. The option is 100% vested. ( 3 )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). ( 4 )Option to purchase shares of common stock granted to the reporting person under Issuer's Omnibus Incentive Plan. The option vests annually over 4 years (25% per year beginning on February 25, 2016). ( 5 )Option to purchase shares of common stock granted to reporting person under Issuer's Amended and Restated Omnibus Incentive Plan. The option vests annually over 4 years (25% per year beginning February 24, 2017). ( 6 )Performance based vesting ( 7 )Restricted Stock Units granted to the reporting person under the Issuer's Amended and Restated Omnibus Incentive Plan equal to the same amount of shares of common stock. The restricted stock units vest annually over 4 years (25% per year beginning February 24, 2017). ( 8 )Option to purchase shares of common stock granted to reporting person under Issuer's Amended and Restated Omnibus Incentive Plan. The option vests annually over 4 years (25% per year beginning February 22, 2018). ( 9 )Restricted Stock Units granted to the reporting person under the Issuer's Amended and Restated Omnibus Incentive Plan. One-half of the restricted stock units are scheduled to vest on February 22, 2018 and one-half of the restricted stock units are scheduled to vest on February 22, 2019. ( 10 )Restricted Stock Units granted to the reporting person under the Issuer's Amended and Restated Omnibus Incentive Plan equal to the same amount of shares of common stock. The restricted stock units vest annually over 4 years (25% per year beginning February 22, 2018). ( 11 )Option to purchase shares of common stock granted to reporting person under Issuer's Amended and Restated Omnibus Incentive Plan. The option vests annually over 4 years (25% per year beginning February 28, 2019). ( 12 )Restricted Stock Units granted to the reporting person under the Issuer's Amended and Restated Omnibus Incentive Plan equal to the same amount of shares of common stock. The restricted stock units vest annually over 4 years (25% per year beginning February 28, 2019).

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.