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<P align=center><FONT face=serif size=2><B><FONT face=serif size=5>UNITED
STATES<BR>SECURITIES AND EXCHANGE COMMISSION</FONT></B><BR><B>WASHINGTON, D.C.
20549</B></FONT></P>
<P align=center><B><FONT face=serif size=5>FORM 8-K</FONT></B></P>
<P align=center><FONT face=serif size=2>CURRENT REPORT </FONT></P>
<P align=center><FONT face=serif size=2>PURSUANT TO SECTION 13 OR 15 (d) OF THE
SECURITIES EXCHANGE ACT OF 1934</FONT></P>
<P align=center><FONT face=serif size=2>DATE OF REPORT (DATE OF EARLIEST EVENT
REPORTED):&nbsp;<B> March 26, 2006</B></FONT></P>
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  <TR vAlign=top>
    <TD align=left width="10%"><FONT face=serif size=2>&nbsp;</FONT></TD>
    <TD align=middle><FONT face=serif size=2><B><FONT face=serif
      size=5>Southwest Bancorp, Inc.</FONT></B></FONT></TD>
    <TD align=left width="10%"><FONT face=serif size=2>&nbsp;</FONT></TD></TR>
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    <TD>
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    </TD>
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    <TD align=left width="10%"><FONT face=serif size=2>&nbsp;</FONT></TD>
    <TD align=middle><FONT face=serif size=2>(Exact name of registrant as
      specified in its charter) </FONT></TD>

    <TD align=left width="10%"><FONT face=serif
  size=2>&nbsp;</FONT></TD></TR></TABLE>
<P align=center><FONT face=serif size=2>COMMISSION FILE
NUMBER<B>:&nbsp;&nbsp;</B><B><U></U></B></FONT></P>
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    <TD align=left width="10%">&nbsp;</TD>
    <TD align=middle width="35%"><FONT face=serif
    size=2><B>OK</B></FONT></TD>
    <TD align=left width="10%">&nbsp;</TD>

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      size=2><B></B></FONT></TD>
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    <TD width="10%"></TD>
    <TD align=middle width="35%">
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    </TD>
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    <TD align=left width="10%">&nbsp;</TD>
    <TD align=middle width="35%"><FONT face=serif size=2>(State or other
      jurisdiction of incorporation or organization)</FONT></TD>
    <TD align=left width="10%">&nbsp;</TD>

    <TD align=middle width="35%"><FONT face=serif size=2>(I.R.S. Employer
      Identification No.)</FONT></TD>
    <TD align=left width="10%">&nbsp;</TD></TR></TABLE><BR><BR>
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    <TD align=middle><FONT face=serif size=1>&nbsp;</FONT><FONT face=serif
      size=2><B>608 South Main Street<BR><BR>Stillwater, OK 74074</B></FONT></TD>
    <TD align=left width="10%">&nbsp;</TD></TR>

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    <TD align=left width="10%">&nbsp;</TD>
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      <HR noShade SIZE=1>
      <FONT face=serif size=2>&nbsp;</FONT></TD>
    <TD align=left width="10%">&nbsp;</TD></TR>
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    <TD align=left width="10%">&nbsp;</TD>
    <TD align=middle><FONT face=serif size=2>(Address and zip code of
      principal executive offices)</FONT></TD>

    <TD align=left width="10%">&nbsp;</TD></TR>
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    <TD align=left width="10%">&nbsp;</TD>
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    <TD align=left width="10%">&nbsp;</TD>
    <TD align=middle><FONT face=serif size=2><B>405-372-2230</B></FONT></TD>

    <TD align=left width="10%">&nbsp;</TD></TR>
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    <TD align=left>&nbsp;</TD>
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      <HR noShade SIZE=1>
    </TD>
    <TD align=left>&nbsp;</TD></TR>
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    <TD align=left width="10%">&nbsp;</TD>

    <TD align=middle><FONT face=serif size=2>(Registrant's telephone number,
      including area code)</FONT></TD>
    <TD align=left width="10%">&nbsp;</TD></TR></TABLE>
<P>&nbsp;</P>
<P align=left><FONT face=serif 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>
<DIV style="TEXT-INDENT: 3%">
<P align=left><FONT face=serif size=2><img src="emptybox.gif" border="0" width="12" height="12"> Written
communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)</FONT></P>
<P align=left><FONT face=serif size=2><img src="emptybox.gif" border="0" width="12" height="12"> Soliciting
material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)</FONT></P>
<P align=left><FONT face=serif size=2><img src="emptybox.gif" border="0" width="12" height="12">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act
(17 CFR 240.14d-2(b))</FONT></P>
<P align=left><FONT face=serif size=2><img src="emptybox.gif" border="0" width="12" height="12">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act
(17 CFR 240.13e-4(c))</FONT></P></DIV>
<P align=center><FONT face=serif size=2>1 of 2 </FONT></P>
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<TD align=left width="11%"><FONT face=serif size=2><B>Item
7.01</B></FONT></TD>
<TD align=left><FONT face=serif size=2><B>REGULATION FD DISCLOSURE</B></FONT></TD></TR>
<TR vAlign=top>
<TD>&nbsp;</TD>
<TD>&nbsp;</TD></TR></table>
<p align="left">
<font size="" face="Arial">Southwest Bancorp, Inc. (&ldquo;Southwest&rdquo;), </font><font size="" face="Arial">today reported that it had reached an agreement to acquire McMullen Bank, with offices in San Antonio and Tilden,Texas. This all-cash acquisition fits with Southwest&rsquo;s established Texas branching strategy, and will provide its second branch in the San Antonio Market&mdash;one that has high concentrations of Southwest&rsquo;s traditional areas of focus: healthcare, and health professionals, business professionals, and commercial and commercial real estate enterprises. </font>
</p>
<p>&nbsp;<font size="" face="Arial">McMullen Bank has assets of approximately $35 million, compared to Southwest&rsquo;s consolidated assets of over $2.0 billion. Because of its relative size, the acquisition is not expected to have a material effect on Southwest&rsquo;s 2006 or 2007 earnings, but is expected to provide a base for continued loan and deposit growth in the greater San Antonio Market. In the acquisition, which is subject to the approval of McMullen Bank&rsquo;s shareholders and regulatory authorities, McMullen Bank would be merged into Stillwater National Bank and Trust Company (&ldquo;SNB&rdquo;), a wholly owned subsidiary of Southwest. SNB plans to continue operating its current San Antonio office and both of McMullen Bank&rsquo;s offices after the merger. Closing is expected in the third quarter. </font>
</p>
<p>&nbsp;<font size="" face="Arial">Southwest launched its Texas and Kansas expansion efforts in 2002. This segment currently operates 4 offices in the Dallas, Austin, and San Antonio Markets, and 2 offices in the Wichita and Kansas City, Kansas markets, and holds approximately $550 million in Texas and Kansas loans&mdash;almost 40% of Southwest&rsquo;s consolidated portfolio loans.</font>
</p>
<p>&nbsp;<font size="" face="Arial">Southwest Bancorp is the financial holding company for Stillwater National Bank and Trust Company, SNB Bank of Wichita, Healthcare Strategic Support, Inc., and Business Consulting Group, Inc. Through its subsidiaries, Southwest offers commercial and consumer lending, deposit, and investment services, and specialized cash management, consulting, and other financial services from offices in Oklahoma, Texas, and Kansas and on the Internet, through </font><font size="" face="Arial"><i>SNB DirectBanker&reg;</i></font><font size="" face="Arial">.</font>
</p>
<p align="left">
<font size="2" face="Arial"><b>Forward-Looking Statements</b></font>
</p>
<p align="left">&nbsp;<font size="" face="Arial">This Press Release includes forward-looking statements, such as: statements of Southwest's goals, intentions, and expectations; estimates of risks and of future costs and benefits; assessments of the amount and timing of problem loan payoffs and loan losses; off-balance sheet risk and market risk; and statements of Southwest's ability to achieve financial and other goals. These forward-looking statements are subject to significant uncertainties because they are based upon: future interest rates, market behavior, and other economic conditions; future laws and regulations; and a variety of other matters. Because of these uncertainties, the actual future results may be materially different from the results indicated by these forward-looking statements. In addition, Southwest's past growth and performance do not necessarily indicate its future results. </font>
</p>

<p>&nbsp;</p>
<P align=center><FONT face=serif size=2><B>SIGNATURE</B></FONT></P>
<DIV style="TEXT-INDENT: 3%">
<P align=left><FONT face=serif size=2>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></DIV>
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    <TD align=middle width="49%"></TD>
    <TD align=middle width="2%"></TD>
    <TD align=left colSpan=2><FONT face=serif size=2>Southwest Bancorp, Inc.</FONT></TD></TR>
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    <TD width="2%">&nbsp;</TD>
    <TD align=left width="5%">&nbsp;</TD>
    <TD align=left>&nbsp;</TD></TR>
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    <TD align=middle width="49%"></TD>
    <TD align=middle width="2%"></TD>
    <TD align=left width="10%"><FONT face=serif size=2>By:</FONT></TD>
    <TD align=left><FONT face=serif size=2>/s/ Rick Green</FONT></TD></TR>
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    <TD align=left></TD>
    <TD align=left></TD>
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    <TD align=left width="2%"></TD>
    <TD align=left width="10%"><FONT face=serif size=2>Name:</FONT></TD>
    <TD align=left><FONT face=serif size=2>Rick Green</FONT></TD></TR>
  <TR vAlign=top>
    <TD align=left width="49%"></TD>
    <TD align=left width="2%"></TD>
    <TD align=left width="10%"><FONT face=serif size=2>Title:</FONT></TD>
    <TD align=left><FONT face=serif size=2>President and CEO</FONT></TD></TR>
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    <TD align=left width="49%"></TD>
    <TD align=left width="2%"></TD>
    <TD align=left width="10%"><FONT face=serif size=2>Date:</FONT></TD>
    <TD align=left><FONT face=serif size=2>Friday, April 28, 2006</FONT></TD></TR>
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    <TD align=left>&nbsp;</TD>
    <TD align=left>&nbsp;</TD></TR></TABLE>
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Prepared and Filed by St Ives Financial
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 26, 2006
Southwest Bancorp, Inc.
(Exact name of registrant as
      specified in its charter)
COMMISSION FILE
NUMBER
:
OK
(State or other
      jurisdiction of incorporation or organization)
(I.R.S. Employer
      Identification No.)
608 South Main Street
Stillwater, OK 74074
(Address and zip code of
      principal executive offices)
405-372-2230
(Registrant's telephone number,
      including area code)
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:
Written
communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)
Soliciting
material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act
(17 CFR 240.14d-2(b))
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act
(17 CFR 240.13e-4(c))
1 of 2
Item
7.01
REGULATION FD DISCLOSURE
Southwest Bancorp, Inc. ("Southwest"),
today reported that it had reached an agreement to acquire McMullen Bank, with offices in San Antonio and Tilden,Texas. This all-cash acquisition fits with Southwest's established Texas branching strategy, and will provide its second branch in the San Antonio Market—one that has high concentrations of Southwest's traditional areas of focus: healthcare, and health professionals, business professionals, and commercial and commercial real estate enterprises.
McMullen Bank has assets of approximately $35 million, compared to Southwest's consolidated assets of over $2.0 billion. Because of its relative size, the acquisition is not expected to have a material effect on Southwest's 2006 or 2007 earnings, but is expected to provide a base for continued loan and deposit growth in the greater San Antonio Market. In the acquisition, which is subject to the approval of McMullen Bank's shareholders and regulatory authorities, McMullen Bank would be merged into Stillwater National Bank and Trust Company ("SNB"), a wholly owned subsidiary of Southwest. SNB plans to continue operating its current San Antonio office and both of McMullen Bank's offices after the merger. Closing is expected in the third quarter.
Southwest launched its Texas and Kansas expansion efforts in 2002. This segment currently operates 4 offices in the Dallas, Austin, and San Antonio Markets, and 2 offices in the Wichita and Kansas City, Kansas markets, and holds approximately $550 million in Texas and Kansas loans—almost 40% of Southwest's consolidated portfolio loans.
Southwest Bancorp is the financial holding company for Stillwater National Bank and Trust Company, SNB Bank of Wichita, Healthcare Strategic Support, Inc., and Business Consulting Group, Inc. Through its subsidiaries, Southwest offers commercial and consumer lending, deposit, and investment services, and specialized cash management, consulting, and other financial services from offices in Oklahoma, Texas, and Kansas and on the Internet, through
SNB DirectBanker®
.
Forward-Looking Statements
This Press Release includes forward-looking statements, such as: statements of Southwest's goals, intentions, and expectations; estimates of risks and of future costs and benefits; assessments of the amount and timing of problem loan payoffs and loan losses; off-balance sheet risk and market risk; and statements of Southwest's ability to achieve financial and other goals. These forward-looking statements are subject to significant uncertainties because they are based upon: future interest rates, market behavior, and other economic conditions; future laws and regulations; and a variety of other matters. Because of these uncertainties, the actual future results may be materially different from the results indicated by these forward-looking statements. In addition, Southwest's past growth and performance do not necessarily indicate its future results.
SIGNATURE
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.
Southwest Bancorp, Inc.
By:
/s/ Rick Green
Name:
Rick Green
Title:
President and CEO
Date:
Friday, April 28, 2006