Filed pursuant to Rule 433
Registration Statement No. 333-165451
April 26, 2010
For Immediate Release
Southwest Bancorp, Inc. Announces Public Offering of Common Shares
April 26, 2010, Stillwater, Oklahoma. Southwest Bancorp, Inc. (NASDAQ Global Select
Market—OKSB), (“Southwest”), today announced that it plans to publicly offer newly issued shares
of its common stock for gross proceeds of approximately $40 million. Stifel, Nicolaus & Company,
Incorporated is the sole book-running manager in the offering and Stephens Inc. will serve as
co-manager. It is expected that the underwriters will be given a 30-day option to purchase up to an
additional 15% of the offered amount of common stock to cover any over-allotments. The shares will
be issued pursuant to a prospectus supplement filed as part of an existing shelf registration
statement filed with the Securities and Exchange Commission (“SEC”) on Form S-3 (File No.
333-165451).
The
proceeds from the offering will be used to increase the
Company’s working capital and for general corporate purposes, including investment in its banking subsidiaries,
Stillwater National Bank and Trust Company and Bank of Kansas. Pending these uses, the Company may
invest net proceeds in marketable investment securities or short-term, interest-bearing assets.
The Company has filed a registration statement (including a prospectus and preliminary
prospectus supplement) with the SEC for the offering to which this communication relates. Before
you invest, you should read the prospectus in the registration statement, the preliminary
prospectus supplement, and other documents the Company has filed with the SEC for more complete
information about the Company and this offering. You may get these documents for free by visiting
EDGAR on the SEC website at www.sec.gov or the direct address for our filed documents at www.sec.gov/Archives/edgar/data/914374/.
Alternatively, copies of the preliminary prospectus supplement and the prospectus relating to the
offering may be obtained by contacting Stifel, Nicolaus & Company, Incorporated, Attention:
Prospectus Department, One South Street, 15th Floor, Baltimore, Maryland 21202, telephone: (443)
224-1988.
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, 200, 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.