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	September 17, 2008
(Date of earliest event reported)	September 16, 2008

Old Second Bancorp, Inc.

(Exact name of Registrant as specified in its charter)

Delaware

(State or other jurisdiction of incorporation)

0-10537	36-3143493
(Commission File Number)	(I.R.S. Employer Identification Number)

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

(630) 892-0202

(Registrant’s telephone number, including area code)

Not Applicable

(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))

Item 8.01 Other Events

On September 16, 2008, the Registrant’s board of directors declared a cash dividend of 16 cents per share payable on October 6, 2008, to stockholders of record as of September 26, 2008.

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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 hereunto duly authorized.

			OLD SECOND BANCORP, INC.
Dated: September 16, 2008	By:	/s/ J. Douglas Cheatham
		J. Douglas Cheatham
		Executive Vice President
		and Chief Financial Officer

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