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

WINTRUST FINANCIAL CORPORATION

(Exact name of registrant as specified in its charter)

Illinois (State or other jurisdiction of Incorporation)		0-21923 (Commission File Number)		36-3873352 (I.R.S. Employer Identification No.)
727 North Bank Lane Lake Forest, Illinois (Address of principal executive offices)				60045 (Zip Code)

Registrant’s telephone number, including area code (847) 615-4096

Not Applicable
(Former name or former address, if changed since last year)

     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:

	þ		Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
	o		Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
	o		Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
	o		Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

 

 

Item 8.01. Other Event.

     On December 5, 2005, Wintrust Financial Corporation (the “Company”) announced the signing of a definitive agreement to acquire Hinsbrook Bancshares, Inc. A copy of the press release relating to the Company’s announcement of this agreement is attached hereto as Exhibit 99.1, and incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits

Exhibit

99.1		Press Release dated December 5, 2005.

Signature

     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 hereunto duly authorized.

Date: December 5, 2005

INDEX TO EXHIBITS

Exhibit

99.1		Press Release dated December 5, 2005.