Item 7.01 Regulation FD Disclosure.
On October 21, 2008, Southwest Bancorp, Inc. issued a press release regarding its results of operations and financial condition for the quarter ended September 30, 2008. The text of the press release is included as Exhibit 99 to this report. Southwest Bancorp will include final financial statements and additional analyses as part of its Quarterly Report on Form 10-Q for the quarter ended September 30, 2008.
Item 9.01 Financial Statements and Exhibits.
(a) Financial statements of businesses acquired. Not applicable.

(b) Pro forma financial information. Not applicable.

(c) Exhibits. Exhibit 99-Press Release dated October 21, 2008.

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Signatures 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
Rick Green
President and Chief Executive Officer

Dated: October 21, 2008