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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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): April 29, 2010

SOUTHWEST BANCORP, INC.

(Exact name of registrant as specified in its charter)


Oklahoma (State or other jurisdiction of incorporation)		000-23064 (Commission file number)		73-1136584 (IRS Employer Identification No)

608 South Main Street, Stillwater, Oklahoma 74074
(Address of Principal Executive Offices) (Zip Code)

Registrant’s telephone number, including area code: (405) 372-2230

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 8.01.		Other Events

On April 29, 2010, Southwest Bancorp, Inc. issued the press release attached as Exhibit 99.1 hereto announcing the closing of its public offering of 4,600,000 common shares at a price to the public of $12.50 per share, for gross proceeds of $57.5 million. Shares sold included 600,000 common shares pursuant to the exercise of the underwriters’ over-allotment option.


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 99.1-Press Release dated April 29, 2010
		Exhibit 99.2- Other expenses of issuance and distribution
		(as required by Item14 of Registration Statement No. 333- 165451)

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/ Kerby Crowell
		Kerby Crowell
		Executive Vice President, Chief Financial Officer and Secretary

Dated: April 29, 2010

Exhibit 99.1

For Immediate Release

Southwest Bancorp, Inc. Announces Closing of $57.5 Million
Underwritten Public Offering of Common Shares

April 29, 2010, Stillwater, Oklahoma. Southwest Bancorp, Inc. (NASDAQ Global Select Market—OKSB), (“Southwest”), today announced the closing of its public offering of 4,600,000 common shares at a price to the public of $12.50 per share, for gross proceeds of $57.5 million, which included 600,000 common shares pursuant to the exercise of the underwriters’ over-allotment option.

The proceeds from the offering will be used to increase the Company’s working capital and for general corporate purposes, including investment in Stillwater National Bank and Trust Company or Bank of Kansas. Pending these uses, the Company may invest net proceeds in marketable investment securities or short-term, interest-bearing assets. Rick Green, President and Chief Executive Officer, said, “We are pleased at the market’s response to our offering and for the additional strength and flexibility this new capital provides to our company.”

Stifel, Nicolaus & Company, Incorporated served as the sole book-running manager in the offering, and Stephens Inc. acted as co-manager.

This press release does not constitute an offer to sell or a solicitation of an offer to buy the securities described herein, nor shall there be any sale of these securities in any jurisdiction in which such an offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction.

Southwest Bancorp, Inc. and Subsidiaries

Southwest Bancorp, Inc. is the bank holding company for Stillwater National Bank and Trust Company and Bank of Kansas. Through its subsidiaries, Southwest offers commercial and consumer lending, deposit, and investment services and specialized cash management and other financial services from offices in Oklahoma, Texas, and Kansas and on the Internet, through SNB DirectBanker^®.

Caution About Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Securities and

Exchange Act of 1934, as amended, including statements of goals, intentions, and expectations as to future trends, plans, events or results of Company operations and policies and regarding general economic conditions. These forward-looking statements are based on current expectations that involve risks, uncertainties and assumptions. Because of these uncertainties and the assumptions on which the forward-looking statements are based, actual future operations and results in the future may differ materially from those indicated herein. Readers are cautioned against placing undue reliance on any such forward-looking statements. For details on factors that could affect these expectations, see the risk factors and other cautionary language included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2009, and other filings with the SEC. Except as required by law, the Company does not undertake to update forward-looking statements contained in this release.

Exhibit 99.2

ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

The table below itemizes the expenses, other than underwriting discounts and commissions, payable by Southwest Bancorp, Inc. in connection with the registration and issuance of the securities registered under the registration statement on Form S-3 filed with the Securities and Exchange Commission by Southwest and the Trust (Registration No. 333-1) which became effective on March 16, 2010, and the prospectus supplement thereto filed with the Securities and Exchange Commission on April 27, 2010.


Securities and Exchange Commission Registration Fee	$	7,130
Legal Fees and Expenses		90,000
Accountants’ Fees and Expenses		90,000
Printing and Duplicating Expenses		25,000
Miscellaneous Expenses		2,870

Total	$	215,000

The amount of additional expenses which may be incurred in connection with the sale of additional securities that may be issued in connection with the additional prospectus supplements, if any, cannot be estimated at this time, but will be filed by amendment or in one or more Current Reports on Form 8-K.