<SUBMISSION>
<ACCESSION-NUMBER>0001104659-09-046860
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>3
<PERIOD>20090804
<ITEMS>2.02
<ITEMS>9.01
<FILING-DATE>20090804
<DATE-OF-FILING-DATE-CHANGE>20090804
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>ACNB CORP
<CIK>0000715579
<ASSIGNED-SIC>6022
<IRS-NUMBER>232233457
<STATE-OF-INCORPORATION>PA
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>8-K
<ACT>34
<FILE-NUMBER>000-11783
<FILM-NUMBER>09983250
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>675 OLD HARRISBURG RD
<STREET2>P O BOX 3129
<CITY>GETTYSBURG
<STATE>PA
<ZIP>17325
<PHONE>7173343161
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>P O BOX 3129
<STREET2>675 OLD HARRISBURG RD
<CITY>GETTYSBURG
<STATE>PA
<ZIP>17325
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a09-20866_18k.htm
<DESCRIPTION>8-K
<TEXT>

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<div style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:solid windowtext 3.0pt;padding:1.0pt 0pt 1.0pt 0pt;">

<p style="border:none;color:windowtext;margin:0pt 0pt .0001pt;padding:0pt;"><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>

</div>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">UNITED
STATES</font></b></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">SECURITIES
AND EXCHANGE COMMISSION</font></b></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Washington,
D.C.&#160; 20549</font></b></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM&nbsp;8-K</font></b></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">CURRENT REPORT</font></b></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">Pursuant to Section&nbsp;13 or 15(d)</font></b></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">of the Securities Exchange Act of 1934</font></b></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<h2 style="color:windowtext;font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date of Report (Date of earliest event reported):&#160; August&nbsp;4, 2009</font></b></h2>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">ACNB Corporation</font></b></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of Registrant
as specified in its charter)</font></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><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="32%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:32.0%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Pennsylvania</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt 0pt 0pt 0pt;width:2.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="32%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:32.0%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">0-11783</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt 0pt 0pt 0pt;width:2.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="32%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:32.0%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">23-2233457</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="32%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:32.0%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or other<br>
  jurisdiction of<br>
  incorporation)</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt 0pt 0pt 0pt;width:2.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:32.0%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Commission<br>
  File Number)</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt 0pt 0pt 0pt;width:2.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:32.0%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(IRS Employer<br>
  Identification No.)</font></p>
  </td>
 </tr>
 <tr>
  <td width="32%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:32.0%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt 0pt 0pt 0pt;width:2.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:32.0%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt 0pt 0pt 0pt;width:2.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:32.0%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="66%" colspan="3" valign="top" style="padding:0pt 0pt 0pt 0pt;width:66.0%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">16
  Lincoln Square, Gettysburg, PA</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt 0pt 0pt 0pt;width:2.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:32.0%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">17325</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="66%" colspan="3" valign="top" style="padding:0pt 0pt 0pt 0pt;width:66.0%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><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:0pt 0pt 0pt 0pt;width:2.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:32.0%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Zip Code)</font></p>
  </td>
 </tr>
</table>

</div>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">717.334.3161</font></b></p><p style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;"> (Registrant&#146;s telephone number, including area code)</font></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" 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="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt 36.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" style="font-size:10.0pt;">&nbsp;Written
communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR
230.425)</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt 36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt 36.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" style="font-size:10.0pt;">&nbsp;Soliciting
material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR
240.14a-12)</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt 36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt 36.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" style="font-size:10.0pt;">&nbsp;Pre-commencement
communications pursuant to Rule&nbsp;14d-2(b)&nbsp;under the Exchange Act (17
CFR 240.14d-2(b))</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt 36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt 36.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" style="font-size:10.0pt;">&nbsp;Pre-commencement
communications pursuant to Rule&nbsp;13e-4(c)&nbsp;under the Exchange Act&#160; (17 CFR 240.13e-4(c))</font></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="border-bottom:solid windowtext 3.0pt;border-left:none;border-right:none;border-top:solid windowtext 1.0pt;padding:1.0pt 0pt 1.0pt 0pt;">

<p style="border:none;color:windowtext;margin:0pt 0pt .0001pt;padding:0pt;"><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>

</div>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

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</div>
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<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">CURRENT
REPORT ON FORM&nbsp;8-K</font></b></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt 72.0pt;text-indent:-72.0pt;"><b><u><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">ITEM 2.02</font></u></b><b><font size="1" 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; </font></b><b><u><font size="2" style="font-size:10.0pt;font-weight:bold;">Results of Operations and Financial Condition</font></u></b></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt 72.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">ACNB
Corporation released earnings results for the Second Quarter of 2009 as of June&nbsp;30,
2009, as more fully described in the attached press release as of August&nbsp;4,
2009.&#160; A copy of the press release is
attached hereto as Exhibit&nbsp;99.1 and is incorporated herein by
reference.&#160; The information furnished
under this Item 2.02 of this Current Report on Form&nbsp;8-K shall not be
deemed to be filed for purposes of the Securities Exchange Act of 1934.</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt 72.0pt;text-indent:-72.0pt;"><b><u><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">ITEM 9.01</font></u></b><b><font size="1" 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; </font></b><b><u><font size="2" style="font-size:10.0pt;font-weight:bold;">Financial Statements and Exhibits</font></u></b></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt 36.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(d)&nbsp;Exhibits.</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="80%" style="border-collapse:collapse;margin-left:108.0pt;width:80.0%;">
 <tr>
  <td width="13%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt 0pt 0pt 0pt;width:13.86%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Exhibit&nbsp;Number</font></b></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0pt 0pt 0pt 0pt;width:3.54%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="82%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt 0pt 0pt 0pt;width:82.6%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Description</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="13%" valign="top" style="border:none;padding:0pt 0pt 0pt 0pt;width:13.86%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0pt 0pt 0pt 0pt;width:3.54%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="82%" valign="top" style="border:none;padding:0pt 0pt 0pt 0pt;width:82.6%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="13%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:13.86%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0pt 0pt 0pt 0pt;width:3.54%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="82%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:82.6%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Press release dated
  August&nbsp;4, 2009.</font></p>
  </td>
 </tr>
</table>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2</font></p>

<div style="color:windowtext;margin:0pt 0pt .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
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<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIGNATURES</font></b></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant
to the requirements of the Securities Exchange Act of 1934, the Registrant has
duly caused this Current Report on Form&nbsp;8-K to be signed on its behalf by
the undersigned, thereunto duly authorized.</font></p>

<p align="center" style="color:windowtext;font-size:10.0pt;margin:0pt 0pt .0001pt;text-align:center;text-autospace:none;"><font face="Times New Roman">&nbsp;</font></p>

<p align="center" style="color:windowtext;font-size:10.0pt;margin:0pt 0pt .0001pt;text-align:center;text-autospace:none;"><font face="Times New Roman">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="50%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:50.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="50%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:50.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">ACNB CORPORATION</font></b></p>
  </td>
 </tr>
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  <td width="50%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:50.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="50%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:50.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Registrant)</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:50.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="50%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:50.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
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  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="50%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:50.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
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  <td width="50%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:50.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Dated: August&nbsp;4,
  2009</font></p>
  </td>
  <td width="50%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt 0pt 0pt 0pt;width:50.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Lynda L. Glass</font></p>
  </td>
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  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="50%" valign="top" style="border:none;padding:0pt 0pt 0pt 0pt;width:50.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Lynda L. Glass</font></p>
  </td>
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  <td width="50%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:50.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="50%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:50.0%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Executive Vice President&nbsp;&amp;
  Secretary</font></p>
  </td>
 </tr>
</table>

<p align="center" style="color:windowtext;font-size:10.0pt;margin:0pt 0pt .0001pt;text-align:center;text-autospace:none;"><font face="Times New Roman">&nbsp;</font></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3</font></p>

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<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">EXHIBIT INDEX</font></b></p>

<p align="center" style="color:windowtext;font-size:10.0pt;margin:0pt 0pt .0001pt;text-align:center;text-autospace:none;"><font face="Times New Roman">&nbsp;</font></p>

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  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">EXHIBIT
  NO.</font></b></p>
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  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="87%" valign="bottom" style="padding:0pt 0pt 0pt 0pt;width:87.5%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
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  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt 0pt 0pt 0pt;width:2.5%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="87%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:87.5%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
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  <td width="10%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:10.0%;">
  <p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt 0pt 0pt 0pt;width:2.5%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="87%" valign="top" style="padding:0pt 0pt 0pt 0pt;width:87.5%;">
  <p style="color:windowtext;margin:0pt 0pt .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Press release dated August&nbsp;4, 2009.</font></p>
  </td>
 </tr>
</table>

<p align="center" style="color:windowtext;font-size:10.0pt;margin:0pt 0pt .0001pt;text-align:center;text-autospace:none;"><font face="Times New Roman">&nbsp;</font></p>

<p align="center" style="color:windowtext;margin:0pt 0pt .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4</font></p>

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<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Exhibit
99.1</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

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  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">Press Release</font></i></p>
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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>
  </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>
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  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">FOR IMMEDIATE
  RELEASE</font></p>
  </td>
  <td width="25%" valign="top" style="padding:0in 0in 0in 0in;width:25.0%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Contact:&nbsp;</font></p>
  </td>
  <td width="25%" valign="top" style="padding:0in 0in 0in 0in;width:25.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Lynda L. Glass</font></p>
  </td>
 </tr>
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  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="25%" valign="top" style="padding:0in 0in 0in 0in;width:25.0%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="25%" valign="top" style="padding:0in 0in 0in 0in;width:25.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">717.339.5085</font></p>
  </td>
 </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<h1 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">ACNB CORPORATION REPORTS</font></b></h1>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">2009 SECOND QUARTER EARNINGS</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">GETTYSBURG,
PA, August&nbsp;4&#151;ACNB Corporation reported year-to-date net income of $3,550,000
for the six months ended June&nbsp;30, 2009, compared to $4,538,000 over the
same six-month period in 2008, a decrease of $988,000 or 22%.&#160; Net income on a per share basis amounted to
$.60 for the first half of 2009 and was $.76 for the same period in 2008.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="line-height:normal;margin:0in 0in .0001pt;text-align:left;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The Corporation reported net income of $1,433,000
for the three months ended June&nbsp;30, 2009, compared to $2,330,000 for the
same quarter in 2008, a decrease of $897,000 or 38%.&#160; Net income on a per share basis amounted to $.24
for the second quarter of 2009 and was $.39 for the same period in 2008.</font></p>

<p align="left" style="line-height:normal;margin:0in 0in .0001pt;text-align:left;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="line-height:normal;margin:0in 0in .0001pt;text-align:left;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">According to Thomas A. Ritter, President and CEO
of ACNB Corporation and Adams County National Bank, &#147;The corporate balance
sheet continues to produce solid net interest income, which improved by $1,892,000,
or nearly 14%, when comparing the first half of 2009 to the first half of 2008.&#160; However, our earnings were negatively
impacted by increases of $1,680,000 in the provision for loan losses and
$1,128,000 in FDIC insurance expense when comparing these same periods.&#148;</font></p>

<p align="left" style="line-height:normal;margin:0in 0in .0001pt;text-align:left;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="line-height:normal;margin:0in 0in .0001pt;text-align:left;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">He
continued, &#147;So far this year, there have been 69 bank failures on a national
level, but none in Pennsylvania. We, at ACNB Corporation, are pleased to report
that our banking organization remains well capitalized by regulatory standards,
and that we have maintained our payment of regular quarterly cash dividends in
support of our stockholders.&#148;</font></p>

<p align="left" style="line-height:normal;margin:0in 0in .0001pt;text-align:left;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="line-height:normal;margin:0in 0in .0001pt;text-align:left;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Total assets of ACNB Corporation on June&nbsp;30,
2009, were $961 million&#151;an increase of 3% from June&nbsp;30, 2008.&#160; Total deposits increased by 4% over the
previous year to $726 million.&#160; Total
loans rose</font></p>

<p align="left" style="line-height:normal;margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="line-height:normal;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">MORE&#133;</font></p>

<p align="center" style="line-height:normal;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

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<p align="center" style="line-height:normal;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">by 8% to $647 million, as
compared to June&nbsp;30, 2008.&#160; An
increase of 1% in stockholders&#146; equity resulted in an aggregate of $85.1
million on June&nbsp;30, 2009.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="left" style="line-height:normal;margin:0in 0in .0001pt;text-align:left;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">ACNB Corporation, headquartered in Gettysburg,
PA, is the financial holding company</font><font size="2" face="Times New Roman" style="font-size:10.0pt;">
for the wholly-owned subsidiaries of Adams County National Bank, Gettysburg,
PA, and Russell Insurance Group,&nbsp;Inc., Westminster, MD.&#160; Originally founded in 1857, Adams County
National Bank serves its marketplace via a network of 18 retail banking offices
located throughout Adams County, PA, and in Dillsburg and Hanover, York County,
PA.&#160;&#160; </font><font size="2" face="Times New Roman" style="font-size:10.0pt;">In addition, the Bank operates loan offices in
Hanover, </font><font size="2" face="Times New Roman" style="font-size:10.0pt;">York County, and
Chambersburg, Franklin County, PA.&#160;
Farmers National Bank of Newville, a division of Adams County National
Bank, serves customers at three retail banking offices in the Newville,
Cumberland County, PA, area.&#160; Russell
Insurance Group,&nbsp;Inc. offers a broad range of commercial and personal
insurance lines with licenses in 36 states, including Pennsylvania and
Maryland, through offices in Westminster, Carroll County, MD, and Germantown,
Montgomery County, MD.</font></p>

<p align="left" style="line-height:normal;margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="line-height:normal;margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">#&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; #&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; #</font></p>

<p align="left" style="line-height:normal;margin:0in 0in .0001pt;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">In addition to historical
information, this press release may contain forward-looking statements.&#160; Examples of forward-looking statements
include, but are not limited to, (a)&nbsp;projections or statements regarding
future earnings, expenses, net interest income, other income, earnings or loss
per share, asset mix and quality, growth prospects, capital structure, and
other financial terms, (b)&nbsp;statements of plans and objectives of
management or the Board of Directors, and (c)&nbsp;statements of assumptions,
such as economic conditions in the Corporation&#146;s market areas.&#160; Such forward-looking statements can be
identified by the use of forward-looking terminology such as &#147;believes&#148;, &#147;expects&#148;,
&#147;may&#148;, &#147;intends&#148;, &#147;will&#148;, &#147;should&#148;, &#147;anticipates&#148;, or the negative of any of
the foregoing or other variations thereon or comparable terminology, or by
discussion of strategy. Forward-looking statements are subject to certain risks
and uncertainties such as local economic conditions, competitive factors, and
regulatory limitations.&#160; Actual results
may differ materially from those projected in the forward-looking statements.
We caution readers not to place undue reliance on these forward-looking
statements. They only reflect management&#146;s analysis as of this date.&#160; Such risks, uncertainties and other factors
that could cause actual results and experience to differ from those projected include,
but are not limited to, the following: ineffectiveness of the business strategy
due to changes in current or future market conditions; the effects of economic
deterioration on current customers, specifically the effect of the economy on
loan customers&#146; ability to repay loans; the effects of competition, and of
changes in laws and regulations on competition, including industry
consolidation and development of competing financial products and services;
interest rate movements; the inability to achieve acquisition-related
synergies; difficulties in integrating distinct business operations, including
information technology difficulties; disruption from the transaction making it
more difficult to maintain relationships with customers and employees, and challenges
in establishing and maintaining operations in new markets; volatilities in the
securities markets; and, deteriorating economic conditions. The Corporation
does not revise or update these forward-looking statements to reflect events or
changed circumstances.&#160; Please carefully
review the risk factors described in other documents the Corporation files from
time to time with the Securities and Exchange Commission, including the Annual
Reports on Form&nbsp;10-K and Quarterly Reports on Form&nbsp;10-Q.&#160; Please also carefully review any Current
Reports on Form&nbsp;8-K filed by the Corporation with the Securities and
Exchange Commission.</font></i></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">ACNB #2009-11</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">August&nbsp;4, 2009</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2</font></p>

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