OLD SECOND BANCORP INC — Regulatory Filings 2021

Oct 19, 2021

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October 19, 2021

Via Edgar

U.S. Securities and Exchange Commission

Division of Corporation Finance

Office of Finance

Washington, D.C. 20549

Attention: Tonya K. Aldave

Re:
Old Second Bancorp, Inc. (the “ Registrant ”)
Registration Statement on Form S-4 (File No. 333-259964)

Dear Sir or Madam:

Pursuant to Rule 461 under the Securities Act of 1933, as amended (the “ Securities Act ”), the Registrant hereby requests that the effective date for the above-referenced Registration Statement be accelerated so that it will be declared effective under the Securities Act at 4:00 p.m., Eastern Time, on Thursday, October 21, 2021, or as soon thereafter as practicable.

Please contact our counsel, Brennan Ryan, at (404) 322-6218 with any questions you may have concerning this letter, or if you require any additional information. Please notify Mr. Ryan when this request for acceleration of effectiveness of the Registration Statement has been granted.

Very truly yours,
Old Second Bancorp, Inc.
By:	/s/ Bradley S. Adams
Bradley S. Adams
Chief Financial Officer

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37 South River Street, Aurora, Illinois 60507

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