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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;border-top:double 2.25pt;padding-top:1;'>&nbsp;</p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><B><font SIZE=2>UNITED STATES</font></B></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><B><font SIZE=2>SECURITIES AND EXCHANGE COMMISSION</font></B></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>Washington, D.C. 20549</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>___________</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><B><font SIZE=3>FORM 8-K</font></B></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><B><font SIZE=2>CURRENT REPORT</font></B></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>Date of Report (Date of earliest event reported):  </font><b><font size=2>March 25, 2009</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>___________</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><B><font SIZE=3>CARDINAL FINANCIAL CORPORATION</font></B></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>(Exact name of registrant as specified in its charter)</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Virginia</font></b></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=2>(State or other jurisdiction</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=2>of incorporation)</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td  colspan="2" valign=top style=' padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>0-24557</font></b></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=2>(Commission</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=2>File Number)</font></p> </td>
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            <p style='margin-left:0pt;text-indent:45.0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>54-1874630</font></b></p>
<p style='margin-left:0pt;text-indent:36.75pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=2>(I.R.S. Employer</font></p>
<p style='margin-left:0pt;text-indent:33.0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=2>Identification No.)</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>8270 Greensboro Drive, Suite 500</font></b></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>McLean, Virginia</font></b></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=2>(Address of principal executive offices)</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>22102</font></b></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=2>(Zip Code)</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>Registrant&#146;s telephone number, including area code:  </font><b><font size=2>(703)</font></b><font size=2>&nbsp;</font><b><font size=2>584-3400</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>Not Applicable</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>(Former name or former address, if changed since last report)</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>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:</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><font face=Wingdings>o</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><font size=2>Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</font></p> </td> </tr></table>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><font face=Wingdings>o</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><font size=2>Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></p> </td> </tr></table>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.25in;text-align:justify;'><font face=Wingdings>o</font>&nbsp;&nbsp;&nbsp;<font size=2>Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.25in;text-align:justify;'><font face=Wingdings>o</font>&nbsp;&nbsp;&nbsp;<font size=2>Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;border-bottom:double 2.25pt;padding-bottom:1;'><font size=2>&nbsp;</font></p>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Item 5.02.</font></b></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.</font></b></p> </td> </tr></table>
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<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:1in; text-indent:-1in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.56in;text-align:left;'><font size=2>On March 25, 2009, John H. Rust, Jr., a director of Cardinal Financial Corporation (the &#147;Company&#148;), announced that, due to new demands on his time from other responsibilities, he will not stand for re-election at the 2009 Annual Meeting of Shareholders of the Company.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Item 5.03.</font></b></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Amendments to Articles of Incorporation or By-Laws; Change in Fiscal Year.</font></b></p> </td> </tr></table>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:left;'><font size=2>On March 25, 2009, in connection with Mr. Rust&#146;s announcement that he would not stand for re-election to the Board of Directors of the Company, the Board of Directors authorized an amendment to the Company&#146;s bylaws (the &#147;Bylaws&#148;). The amendment will revise Section 2.2 of the Bylaws to decrease the size of the Company&#146;s Board of Directors from twelve (12) to eleven (11) directors.  The amendment will not become effective until April 24, 2009, the date of the Company&#146;s 2009 Annual Meeting of Shareholders.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:left;'><font size=2>The text of the amendment to the Bylaws, effective April 24, 2009, is attached as Exhibit 3.1 to this report.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Item</font></b><font size=2>&nbsp;</font><b><font size=2>9.01</font></b></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Financial Statements and Exhibits.</font></b></p> </td> </tr></table>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


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            <p style='margin:0in;margin-bottom:.0001pt;text-align:justify;page-break-after: avoid'><font size=1>&nbsp;</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><font size=2>(d)</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><font size=2>Exhibits.</font></p> </td> </tr></table>
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<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:justify;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><u><b><font size=2>Exhibit No.</font></b></u></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><u><b><font size=2>Description</font></b></u></p> </td> </tr></table>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


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            <p style='margin:0in;margin-bottom:.0001pt;text-align:justify;page-break-after: avoid'><font size=1>&nbsp;</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>3.1 </font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><font size=2>Amendment to the Bylaws of the Company</font></p> </td> </tr></table>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><B><font SIZE=2>SIGNATURES</font></B></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.56in;text-align:justify;'><font size=2>Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:3in;text-align:left;'><B><font SIZE=2>CARDINAL FINANCIAL CORPORATION </font></B></p>
<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:3in;text-align:left;'><font size=1>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font size=2>(Registrant)</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:justify;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><font size=2>Date:  March 27, 2009</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><font size=2>By:</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><u><font size=2>/s/ Mark A. Wendel</font></u></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Mark A. Wendel</font></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Executive Vice President and</font></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Chief Financial Officer</font></p> </td> </tr></table>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
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<u><b><font size=2>Exhibit</font></b><font size=2>&nbsp;</font><b><font size=2>Index </font></b></u><font size=2>&nbsp;</font></p>

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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><u><b><font size=2>Exhibit No.</font></b></u></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><u><b><font size=2>Description</font></b></u></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>3.1 </font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:justify;margin-top:0pt;margin-bottom:0pt'><font size=2>Amendment to the Bylaws of the Company</font></p> </td> </tr></table>
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{"company-data": {"conformed-name": "CARDINAL FINANCIAL CORP", "cik": "0001060523", "assigned-sic": "6021", "irs-number": "541874630", "state-of-incorporation": "VA", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-24557", "film-number": "09710280"}, "business-address": {"street1": "8270 GREENSBORO DRIVE", "street2": "SUITE 500", "city": "MCLEAN", "state": "VA", "zip": "22102", "phone": "7035843400"}, "mail-address": {"street1": "8270 GREENSBORO DRIVE", "street2": "SUITE 500", "city": "MCLEAN", "state": "VA", "zip": "22102"}}
Form 8-K
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 (Date of earliest event reported):
March 25, 2009
___________
CARDINAL FINANCIAL CORPORATION
(Exact name of registrant as specified in its charter)
Virginia
(State or other jurisdiction
of incorporation)
0-24557
(Commission
File Number)
54-1874630
(I.R.S. Employer
Identification No.)
8270 Greensboro Drive, Suite 500
McLean, Virginia
(Address of principal executive offices)
22102
(Zip Code)
Registrant's telephone number, including area code:
(703)
584-3400
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:
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 5.02.
Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
On March 25, 2009, John H. Rust, Jr., a director of Cardinal Financial Corporation (the "Company"), announced that, due to new demands on his time from other responsibilities, he will not stand for re-election at the 2009 Annual Meeting of Shareholders of the Company.
Item 5.03.
Amendments to Articles of Incorporation or By-Laws; Change in Fiscal Year.
On March 25, 2009, in connection with Mr. Rust's announcement that he would not stand for re-election to the Board of Directors of the Company, the Board of Directors authorized an amendment to the Company's bylaws (the "Bylaws"). The amendment will revise Section 2.2 of the Bylaws to decrease the size of the Company's Board of Directors from twelve (12) to eleven (11) directors.  The amendment will not become effective until April 24, 2009, the date of the Company's 2009 Annual Meeting of Shareholders.
The text of the amendment to the Bylaws, effective April 24, 2009, is attached as Exhibit 3.1 to this report.
Item
9.01
Financial Statements and Exhibits.
(d)
Exhibits.
Exhibit No.
Description
3.1
Amendment to the Bylaws of the Company
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
CARDINAL FINANCIAL CORPORATION
(Registrant)
Date:  March 27, 2009
By:
/s/ Mark A. Wendel
Mark A. Wendel
Executive Vice President and
Chief Financial Officer
Exhibit
Index
Exhibit No.
Description
3.1
Amendment to the Bylaws of the Company