<SEC-DOCUMENT>0001104659-16-159982.txt : 20170103
<SEC-HEADER>0001104659-16-159982.hdr.sgml : 20170103
<ACCEPTANCE-DATETIME>20161201123203
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0001104659-16-159982
CONFORMED SUBMISSION TYPE:	CORRESP
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20161201

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			OLD SECOND BANCORP INC
		CENTRAL INDEX KEY:			0000357173
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				363143493
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1215

	FILING VALUES:
		FORM TYPE:		CORRESP

	BUSINESS ADDRESS:	
		STREET 1:		37 S RIVER ST
		CITY:			AURORA
		STATE:			IL
		ZIP:			60507
		BUSINESS PHONE:		6308920202

	MAIL ADDRESS:	
		STREET 1:		37 SOUTH RIVER STREET
		CITY:			AURORA
		STATE:			IL
		ZIP:			60507
</SEC-HEADER>
<DOCUMENT>
<TYPE>CORRESP
<SEQUENCE>1
<FILENAME>filename1.htm
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<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">December&nbsp;1, 2016</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><b><u><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">VIA EDGAR</font></u></b></p>
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<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">United States Securities and Exchange Commission</font></p>
<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Division of Corporation Finance</font></p>
<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">100 F Street, NE</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Washington, D.C.&#160; 20549</font></p>
<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Attention:&#160;&#160;&#160;&#160;&#160; Katelyn Donovan</font></p>
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<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Re:</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Old   Second Bancorp,&nbsp;Inc.</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Request   for Acceleration of Effectiveness of Form&nbsp;S-3</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SEC File No.&nbsp;333-214459   (&#147;Registration Statement&#148;)</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Dear Ms.&nbsp;Donovan:</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On behalf of Old Second Bancorp,&nbsp;Inc., as registrant, the undersigned officer hereby requests that the effective date for the Registration Statement, as amended, be accelerated so that it will be declared effective at 1:00 p.m.&nbsp;(Washington, D.C. time) or as soon as practicable thereafter on Friday, December&nbsp;2, 2016.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The staff should feel free to contact Bill Fay of Barack Ferrazzano Kirschbaum&nbsp;&amp; Nagelberg LLP, the registrant&#146;s legal counsel, at (312) 629-7470 with any questions or comments.</font></p>
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<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Very truly   yours,</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Old Second   Bancorp,&nbsp;Inc.</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ J. Douglas   Cheatham</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">J. Douglas   Cheatham</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;punctuation-wrap:simple;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Executive Vice   President and Chief Executive Officer</font></p>    </td>   </tr>  </table>
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