First Midwest Bancorp (ONBPP) 8-K Agreement and Plan of Merger

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 14, 2005 First Midwest Bancorp, Inc. (Exact name of registrant as specified in its charter)
Delaware (State or other jurisdiction of Incorporation)	0-10967 (Commission File Number)	36-3161078 (IRS Employer Identification No.)
One Pierce Place, Suite 1500, Itasca, Illinois (Address of principal executive offices)			60143 (Zip Code)
(630) 875-7450 (Registrant's telephone number, including area code) N/A (Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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FIRST MIDWEST BANCORP, INC.

FORM 8-K

December 14, 2005

Item 8.01 Other Events On December 14, 2005, First Midwest Bancorp, Inc. announced that it had entered into an Agreement and Plan of Merger with Bank Calumet, Inc., pursuant to which Bank Calumet be merged with and into a subsidiary of First Midwest. A copy of the Agreement is attached as Exhibit 99 to this report.
Item 9.01 Financial Statements and Exhibits
	(a) and (b) not applicable
	(c) Exhibit Index:
	99	Merger Agreement issued by First Midwest Bancorp, Inc. and Bank Calumet, Inc. dated December 12, 2005.

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused
this report to be signed on its behalf by the undersigned thereunto duly authorized.
	First Midwest Bancorp, Inc.
	(Registrant)
Date: December 14, 2005	/s/ STEVEN H. SHAPIRO
	Steven H. Shapiro Executive Vice President

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