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  <p style="border:none;font-weight:bold;margin:0in 0in .0001pt;padding:0in;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>
  
  </div>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">UNITED STATES</font></b></p>
  
  <p style="font-weight:bold;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>
  
  <p align="center" style="font-weight:bold;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">SECURITIES AND EXCHANGE COMMISSION</font></b></p>
  
  <p align="center" style="font-weight:bold;margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>
  
  <h3 align="center" style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:avoid;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">WASHINGTON,
  D.C.&#160; 20549</font></b></h3>
  
  <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><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;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <h3 align="center" style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:avoid;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">FORM&nbsp;8-K</font></b></h3>
  
  <h3 align="center" style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:avoid;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></h3>
  
  <h3 align="center" style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:avoid;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;">CURRENT REPORT</font></b></h3>
  
  <h3 align="center" style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:avoid;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></h3>
  
  <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">Pursuant to Section&nbsp;13 or
  15(d)&nbsp;of</font></b></p>
  
  <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">the Securities Exchange Act of
  1934</font></b></p>
  
  <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><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;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div align="center">
  
  <table border="0" cellspacing="0" cellpadding="0" width="83%" style="border-collapse:collapse;width:83.24%;">
   <tr>
    <td width="58%" valign="top" style="padding:0in .7pt 0in .7pt;width:58.86%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date of Report</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.4%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="38%" valign="top" style="padding:0in .7pt 0in .7pt;width:38.74%;">
    <p align="right" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:right;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">April&nbsp;25, 2008</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="58%" valign="top" style="padding:0in .7pt 0in .7pt;width:58.86%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Date of
    earliest event reported)</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.4%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="38%" valign="top" style="padding:0in .7pt 0in .7pt;width:38.74%;">
    <p align="right" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:right;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">April&nbsp;25<b>, </b>2008</font></p>
    </td>
   </tr>
  </table>
  
  </div>
  
  <p style="margin:0in 0in .0001pt 13.5pt;punctuation-wrap:simple;text-autospace:none;"><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;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">Old Second Bancorp,&nbsp;Inc.</font></b></p>
  
  <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of Registrant as specified in its charter)</font></p>
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><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;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Delaware</font></b></p>
  
  <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or other jurisdiction of incorporation)</font></p>
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div align="center">
  
  <table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
   <tr>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.0%;">
    <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">0-10537</font></b></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.0%;">
    <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">36-3143493</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.0%;">
    <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Commission File Number)</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.0%;">
    <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(I.R.S. Employer Identification Number)</font></p>
    </td>
   </tr>
   <tr>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.0%;">
    <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.0%;">
    <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.0%;">
    <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">37 South River Street, Aurora,
    Illinois</font></b></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
    </td>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.0%;">
    <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">60507</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.0%;">
    <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of principal executive offices)</font></p>
    </td>
    <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.0%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="49%" valign="top" style="padding:0in .7pt 0in .7pt;width:49.0%;">
    <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Zip Code)</font></p>
    </td>
   </tr>
  </table>
  
  </div>
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><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;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(630) 892-0202</font></b></p>
  
  <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Registrant&#146;s telephone number, including area code)</font></p>
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <h2 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:avoid;punctuation-wrap:simple;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Not
  Applicable</font></b></h2>
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Former name or former address, if changed since last
  report)</font></p>
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="margin:0in 4.5pt .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Check the appropriate box below if the Form&nbsp;8-K
  filing is intended to simultaneously satisfy the filing obligation of the
  registrant under any of the following provisions (<i>see</i> General Instruction A.2 below):</font></p>
  
  <p style="margin:0in 4.5pt .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="margin:0in 0in .0001pt .5in;punctuation-wrap:simple;text-autospace:none;text-indent:-.5in;"><font size="1" face="Times New Roman" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Written communications pursuant to Rule&nbsp;425
  under the Securities Act (17 CFR 230.425)</font></p>
  
  <p style="margin:0in 0in .0001pt .5in;punctuation-wrap:simple;text-autospace:none;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="margin:0in 0in .0001pt .5in;punctuation-wrap:simple;text-autospace:none;text-indent:-.5in;"><font size="1" face="Times New Roman" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Soliciting material pursuant to Rule&nbsp;14a-12
  under the Exchange Act (17 CFR 240.14a-12)</font></p>
  
  <p style="margin:0in 0in .0001pt .5in;punctuation-wrap:simple;text-autospace:none;text-indent:-.5in;"><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-autospace:none;"><font size="1" face="Times New Roman" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Pre-commencement communications pursuant
  to Rule&nbsp;14d-2(b)&nbsp;under the Exchange <br>
  </font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Act (17 CFR 240.14d-2(b))</font></p>
  
  <p style="margin:0in 0in .0001pt .5in;punctuation-wrap:simple;text-autospace:none;text-indent:-.5in;"><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-autospace:none;"><font size="1" face="Times New Roman" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Pre-commencement communications pursuant
  to Rule&nbsp;13e-4(c)&nbsp;under the Exchange <br>
  </font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; &#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Act (17 CFR 240.13e-4(c))</font></p>
  
  <div style="border:none;border-bottom:double windowtext 6.0pt;padding:0in 0in 0in 0in;">
  
  <p style="border:none;margin:0in 0in .0001pt;padding:0in;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="border:none;margin:0in 0in .0001pt;padding:0in;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  </div>
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
  
  </div>
  <!-- SEQ.=1,FOLIO='',FILE='C:\JMS\tbamidi\08-12274-1\task2883710\12274-1-ba.htm',USER='tbamidi',CD='Apr 22 22:04 2008' -->
  
  
  <br clear="all" style="page-break-before:always;">
  
  
  <div style="font-family:Times New Roman;">
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><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-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 2.02&#160;
  Results of Operations and Financial Condition</font></b></p>
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:hanging;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On April&nbsp;25,
  2008, Old Second Bancorp,&nbsp;Inc. issued a press release announcing its
  earnings for the first fiscal quarter ended March&nbsp;31, 2008. The press
  release is attached as Exhibit&nbsp;99.1.</font></p>
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:hanging;text-autospace:none;text-indent:.5in;"><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-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 9.01 Financial Statements and Exhibits</font></b></p>
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><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-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font></b><font size="2" style="font-size:10.0pt;">(d)&nbsp;Exhibits</font></p>
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><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-autospace:none;"><font size="1" face="Times New Roman" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">99.1 Press release dated April&nbsp;25,
  2008</font></p>
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><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-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <div style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
  
  </div>
  <!-- SEQ.=1,FOLIO='',FILE='C:\JMS\tbamidi\08-12274-1\task2883710\12274-1-ba.htm',USER='tbamidi',CD='Apr 22 22:04 2008' -->
  
  
  <br clear="all" style="page-break-before:always;">
  
  
  <div>
  
  <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><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;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.15pt;">SIGNATURES</font></b></p>
  
  <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><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-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.15pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; 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.</font></p>
  
  <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  
  <table border="0" cellspacing="0" cellpadding="0" width="89%" style="border-collapse:collapse;width:89.2%;">
   <tr>
    <td width="36%" valign="top" style="padding:0in .7pt 0in .7pt;width:36.18%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;letter-spacing:-.15pt;">&nbsp;</font></b></p>
    </td>
    <td width="19%" valign="top" style="padding:0in .7pt 0in .7pt;width:19.86%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="3%" valign="top" style="padding:0in .7pt 0in .7pt;width:3.74%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="40%" valign="top" style="padding:0in .7pt 0in .7pt;width:40.22%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.15pt;">OLD SECOND BANCORP, INC.</font></b></p>
    </td>
   </tr>
   <tr>
    <td width="36%" valign="top" style="padding:0in .7pt 0in .7pt;width:36.18%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="19%" valign="top" style="padding:0in .7pt 0in .7pt;width:19.86%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="3%" valign="top" style="padding:0in .7pt 0in .7pt;width:3.74%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="40%" valign="top" style="padding:0in .7pt 0in .7pt;width:40.22%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="36%" valign="top" style="padding:0in .7pt 0in .7pt;width:36.18%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="19%" valign="top" style="padding:0in .7pt 0in .7pt;width:19.86%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="3%" valign="top" style="padding:0in .7pt 0in .7pt;width:3.74%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
    <td width="40%" valign="top" style="padding:0in .7pt 0in .7pt;width:40.22%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
    </td>
   </tr>
   <tr>
    <td width="36%" valign="top" style="padding:0in .7pt 0in .7pt;width:36.18%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.15pt;">Dated: April&nbsp;25, 2008</font></p>
    </td>
    <td width="19%" valign="top" style="padding:0in .7pt 0in .7pt;width:19.86%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
    </td>
    <td width="3%" valign="top" style="padding:0in .7pt 0in .7pt;width:3.74%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
    </td>
    <td width="40%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:40.22%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ J. Douglas
    Cheatham</font></p>
    </td>
   </tr>
   <tr>
    <td width="36%" valign="top" style="padding:0in .7pt 0in .7pt;width:36.18%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.15pt;">&nbsp;</font></p>
    </td>
    <td width="19%" valign="top" style="padding:0in .7pt 0in .7pt;width:19.86%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.15pt;">&nbsp;</font></p>
    </td>
    <td width="3%" valign="top" style="padding:0in .7pt 0in .7pt;width:3.74%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.15pt;">&nbsp;</font></p>
    </td>
    <td width="40%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:40.22%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.15pt;">J. Douglas Cheatham</font></p>
    </td>
   </tr>
   <tr>
    <td width="36%" valign="top" style="padding:0in .7pt 0in .7pt;width:36.18%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.15pt;">&nbsp;</font></p>
    </td>
    <td width="19%" valign="top" style="padding:0in .7pt 0in .7pt;width:19.86%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.15pt;">&nbsp;</font></p>
    </td>
    <td width="3%" valign="top" style="padding:0in .7pt 0in .7pt;width:3.74%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.15pt;">&nbsp;</font></p>
    </td>
    <td width="40%" valign="top" style="padding:0in .7pt 0in .7pt;width:40.22%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.15pt;">Executive Vice President</font></p>
    </td>
   </tr>
   <tr>
    <td width="36%" valign="top" style="padding:0in .7pt 0in .7pt;width:36.18%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.15pt;">&nbsp;</font></p>
    </td>
    <td width="19%" valign="top" style="padding:0in .7pt 0in .7pt;width:19.86%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.15pt;">&nbsp;</font></p>
    </td>
    <td width="3%" valign="top" style="padding:0in .7pt 0in .7pt;width:3.74%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;letter-spacing:-.15pt;">&nbsp;</font></p>
    </td>
    <td width="40%" valign="top" style="padding:0in .7pt 0in .7pt;width:40.22%;">
    <p style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.15pt;">and Chief Financial Officer</font></p>
    </td>
   </tr>
  </table>
  
  <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.15pt;">&nbsp;</font></p>
  
  <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.15pt;">2</font></p>
  
  <div style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-autospace:none;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
  
  <p align="center" style="margin:0in 0in .0001pt;punctuation-wrap:simple;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.15pt;">&nbsp;</font></p>
  
  </div>
  <!-- SEQ.=1,FOLIO='2',FILE='C:\JMS\tbamidi\08-12274-1\task2883710\12274-1-ba.htm',USER='tbamidi',CD='Apr 22 22:04 2008' -->
  
  
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metadata_documents: [{"type": "8-K", "sequence": "1", "filename": "a08-12274_18k.htm", "description": "8-K", "secsgml_size_bytes": 33065}]
metadata_filer: {"company-data": {"conformed-name": "OLD SECOND BANCORP INC", "cik": "0000357173", "assigned-sic": "6022", "irs-number": "363143493", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-10537", "film-number": "08775953"}, "business-address": {"street1": "37 S RIVER ST", "city": "AURORA", "state": "IL", "zip": "60507", "phone": "7088920202"}, "mail-address": {"street1": "37 SOUTH RIVER STREET", "city": "AURORA", "state": "IL", "zip": "60507"}}
text: 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
  April 25, 2008
  (Date of
    earliest event reported)
  April 25
  ,
  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 2.02 
  Results of Operations and Financial Condition
  On April 25,
  2008, Old Second Bancorp, Inc. issued a press release announcing its
  earnings for the first fiscal quarter ended March 31, 2008. The press
  release is attached as Exhibit 99.1.
  Item 9.01 Financial Statements and Exhibits
  (d) Exhibits
  99.1 Press release dated April 25,
  2008
  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: April 25, 2008
  By:
  /s/ J. Douglas
    Cheatham
  J. Douglas Cheatham
  Executive Vice President
  and Chief Financial Officer
  2