-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Cvc0yx8k/ZRsVFLdVV8pOpFw526+3meo52YBrspeicnMCNt2GCOgwFYCpOJ/+Gxl
 5ccgJEMOC62oAW8l3zbpzQ==

<SEC-DOCUMENT>9999999995-08-001913.txt : 20080617
<SEC-HEADER>9999999995-08-001913.hdr.sgml : 20080617
<ACCEPTANCE-DATETIME>20080617001535
ACCESSION NUMBER:		9999999995-08-001913
CONFORMED SUBMISSION TYPE:	EFFECT
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20080616
DATE AS OF CHANGE:		20080617
EFFECTIVENESS DATE:		20080616

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SOUTHWEST BANCORP INC
		CENTRAL INDEX KEY:			0000914374
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				731136584
		STATE OF INCORPORATION:			OK
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-151384
		FILM NUMBER:		08901884

	BUSINESS ADDRESS:	
		STREET 1:		608 SOUTH MAIN STREET
		CITY:			STILLWATER
		STATE:			OK
		ZIP:			74074
		BUSINESS PHONE:		4053722230

	MAIL ADDRESS:	
		STREET 1:		608 SOUTH MAIN STREET
		CITY:			STILLWATER
		STATE:			OK
		ZIP:			74074

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Southwest Capital Trust IV
		CENTRAL INDEX KEY:			0001436699
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-151384-01
		FILM NUMBER:		08901885

	BUSINESS ADDRESS:	
		STREET 1:		608 SOUTH MAIN STREET
		CITY:			STILLWATER
		STATE:			OK
		ZIP:			74074
		BUSINESS PHONE:		405-742-1800

	MAIL ADDRESS:	
		STREET 1:		608 SOUTH MAIN STREET
		CITY:			STILLWATER
		STATE:			OK
		ZIP:			74074

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Southwest Capital Trust III
		CENTRAL INDEX KEY:			0001436700
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-151384-02
		FILM NUMBER:		08901887

	BUSINESS ADDRESS:	
		STREET 1:		608 SOUTH MAIN STREET
		CITY:			STILLWATER
		STATE:			OK
		ZIP:			74074
		BUSINESS PHONE:		405-742-1800

	MAIL ADDRESS:	
		STREET 1:		608 SOUTH MAIN STREET
		CITY:			STILLWATER
		STATE:			OK
		ZIP:			74074

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Southwest Capital Trust II
		CENTRAL INDEX KEY:			0001436702
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-151384-03
		FILM NUMBER:		08901888

	BUSINESS ADDRESS:	
		STREET 1:		608 SOUTH MAIN STREET
		CITY:			STILLWATER
		STATE:			OK
		ZIP:			74074
		BUSINESS PHONE:		405-742-1800

	MAIL ADDRESS:	
		STREET 1:		608 SOUTH MAIN STREET
		CITY:			STILLWATER
		STATE:			OK
		ZIP:			74074
</SEC-HEADER>
<DOCUMENT>
<TYPE>EFFECT
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0101</schemaVersion>

    <submissionType>EFFECT</submissionType>

    <act>33</act>

    <testOrLive>LIVE</testOrLive>

    <effectiveData>
        <finalEffectivenessDispDate>2008-06-16</finalEffectivenessDispDate>
        <finalEffectivenessDispTime>15:00:00</finalEffectivenessDispTime>
        <form>S-3</form>
        <filer>
            <cik>0000914374</cik>
            <entityName>SOUTHWEST BANCORP INC</entityName>
            <fileNumber>333-151384</fileNumber>
        </filer>
        <filer>
            <cik>0001436702</cik>
            <entityName>Southwest Capital Trust II</entityName>
            <fileNumber>333-151384-03</fileNumber>
        </filer>
        <filer>
            <cik>0001436700</cik>
            <entityName>Southwest Capital Trust III</entityName>
            <fileNumber>333-151384-02</fileNumber>
        </filer>
        <filer>
            <cik>0001436699</cik>
            <entityName>Southwest Capital Trust IV</entityName>
            <fileNumber>333-151384-01</fileNumber>
        </filer>
    </effectiveData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----