OLD SECOND BANCORP INC — Capital/Financing Update 2010

Aug 20, 2010

*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): August 20, 2010

*Old Second Bancorp, Inc.*

(Exact name of registrant as specified in its charter)

Delaware	0-10537	36-3143493
(State
or other jurisdiction of incorporation)	(Commission
File Number)	(I.R.S.
Employer Identification No.)

*37 South River Street Aurora, Illinois 60507* (Address of principal executive offices) (Zip code)

*(630) 892-0202* (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 ( see General Instruction A.2. below):

o 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))

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*Item 8.01. Other Events.*

On August 20, 2010, Old Second Bancorp, Inc. issued a press release announcing that it has terminated its offer to exchange newly issued shares of its common stock for outstanding trust preferred securities issued by Old Second Capital Trust I (NasdaqGS: OSBCP) without accepting for exchange or exchanging any of the securities. Any trust preferred securities previously tendered pursuant to the exchange offer will be promptly returned to the tendering holders.

A copy of the press release is filed as Exhibit 99.1 to this report and is incorporated by reference in this Item 8.01.

*Item 9.01. Financial Statements and Exhibits.*

*(d) Exhibits.*

99.1 Press Release, dated August 20, 2010

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*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: August 20, 2010
By:	/s/ J. Douglas Cheatham
Name:	J. Douglas Cheatham
Title:	Executive Vice President
and Chief Financial Officer

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