The dividend will be distributed to shareholders of record as of June 18 and is payable July 2. Southwest Bancorp Inc. is a publicly owned holding company headquartered in Stillwater and has two financial institution subsidiaries. Stillwater National Bank & Trust Co. has offices in Stillwater, Tulsa, Oklahoma City and Chickasha, as well as Dallas, San Antonio, Austin and Houston, in Texas and the Kansas City, Kan. area. SNB Bank of Wichita is in Wichita, Kan.