Attached files

file filename
10-Q - FORM 10-Q - SOUTHWEST BANCORP INCy91218e10vq.htm
EX-31.A - EX-31.A - SOUTHWEST BANCORP INCy91218exv31wa.htm
EX-31.B - EX-31.B - SOUTHWEST BANCORP INCy91218exv31wb.htm
EX-32.A - EX-32.A - SOUTHWEST BANCORP INCy91218exv32wa.htm
Exhibit 32(b)
18 U.S.C. Section 1350 Certification
I hereby certify pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2003, to the best of my knowledge and belief, that the accompanying Form 10-Q of Southwest Bancorp, Inc. (“Southwest”) for the three month period ended March 31, 2011, fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and that the information contained in this Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Southwest.
                 
By:
    /s/ Laura Robertson
 
Laura Robertson
      May 10, 2011
 
Date
   
 
  Executive Vice President, Chief Financial Officer            
 
  (Principal Financial Officer)            

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