The parent company of SNB is Southwest Bancorp, Inc. ("Southwest"). Organized in 1981, Southwest's focus is to provide a high level of quality customer service with a wide range of services, products and technology driven convenience in response to its customer's needs. Southwest maintains an intense focus on specific performance goals designed to increase shareholder value. Southwest is the financial holding company for:

• Stillwater National Bank & Trust Company ("Stillwater National," "SNB"), chartered in 1894, offers commercial and deposit services from offices in Stillwater, Tulsa, Oklahoma City and Chickasha, Oklahoma, as well as Frisco, Dallas, Austin and San Antonio, Texas.
  
  
• SNB Bank of Wichita opened its doors for commercial and personal deposits as well as lending needs in November, 2003 when it was granted a federal savings bank charter. SNB originally operated a loan production office at the current location in Wichita, Kansas since 2002.
  
  
• Business Consulting Group (BCG) specializes in offering solutions for each client to enhance the performance of his or her own company. Consulting is offered for both the private and public sectors.
  
  
• Healthcare Strategic Support, Inc. (HSSI) is a healthcare consulting group that services individuals, small businesses or multi-million dollar organizations with their healthcare needs such as revenue enhancement, financial management support, hospital & clinic development project management and managed care strategic planning.
  

For complete information on Southwest Bancorp, Inc, please visit: www.oksb.com.