BOK Financial Corporation

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• Stanley A. Lybarger (CEO)
• George B. Kaiser (Chairman)

The BOK Financial Corporation is an American regional financial company based in Tulsa, Oklahoma. The corporate headquarters is located in the BOK Tower in downtown Tulsa.

It is divided into seven divisions: Bank of Albuquerque, Bank of Arizona, Bank of Arkansas, Bank of Kansas City, Bank of Oklahoma, Bank of Texas and Colorado State Bank and Trust.