BOK Financial Corporation is a $23 billion regional financial services company based in Tulsa, Oklahoma. Assets of the organization are centered in seven bank subsidiaries, Bank of Oklahoma, Bank of Texas, Bank of Albuquerque, Bank of Arkansas, Bank of Arizona, Colorado State Bank and Trust and Bank of Kansas City. BOKF has full-service banks located in eight states. BOKF offers trust and investment management services through its banks and Southwest Trust Company, N.A. Trust services are provided through the company’s offices in Oklahoma, Texas, New Mexico, Colorado, Arkansas, Arizona, Kansas, Missouri and Utah.