THE CORPORATE LIBRARY

Related Party Transactions and Outside Related Director Information

Southwest Bancorp Inc. (OKSB)

3/23/2006 Proxy Information

J. Berry Harrison and Robert B. Rodgers are James E. Berry's cousins.

Southwest's banking subsidiaries have and expect to have in the future, banking and other transactions with certain officers and directors of Southwest and its subsidiaries and with greater than 5% shareholders of Southwest and their immediate families and associates. These transactions are in the ordinary course of business, and loans have been and will be made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with other persons. In the opinion of Southwest's management, these loans did not involve more than normal risk of collectibility or present other unfavorable features.

3/22/2005 Proxy Information

Southwest's banking subsidiaries have and expect to have in the future, banking and other transactions with certain officers and directors of Southwest and its subsidiaries and with greater than 5% shareholders of Southwest and their immediate families and associates. These transactions are in the ordinary course of business, and loans have been and will be made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with other persons. In the opinion of Southwest's management, these loans did not involve more than normal risk of collectibility or present other unfavorable features.

James E. Berry II, Betty B. Kerns, and Robert B. Rodgers are his cousins.