First Midwest Bancorp (ONBPP) 8-K Regulation FD Disclosure

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) September 12, 2006 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))

1

FIRST MIDWEST BANCORP, INC.

FORM 8-K

September 12, 2006

Item 7.01 Regulation of FD Disclosure On September 12, 2006, First Midwest Bancorp, Inc. presented at the Lehman Brothers Fourth Annual Financial Services Conference. The presentation is available on the Company's website,www.firstmidwest.com, and is attached as Exhibit 99 to this report.
Item 9.01 Financial Statements and Exhibits
	(a) and (b) not applicable
	(c) Exhibit Index:
	99	Power Point presentation delivered by both the Registrant's Chief Financial Officer and Group President of Commercial Banking on September 12, 2006.

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: September 12, 2006	/s/ MICHAEL L. SCUDDER
	Michael L. Scudder Executive Vice President

2