Commodities: VP Piper Acquires 3,557 Of BOK Financial Corp >BOKF

SOURCE: Form 4 
ISSUER: BOK Financial Corp 
FILER: Piper Patrick E 
TITLE: Vice President 
DATE               TRANSACTION              SHARES       PRICE           VALUE 
12/5/17            Exercise                  3,557      $42.81        $152,269 
12/5/17            Surrender*                3,557      $89.60        $318,690 
OWNERSHIP: 36,824 (Direct) 
  * - Insiders can surrender shares back to the company to pay taxes or cover 
      the cost of an option exercise or vesting. 
  The Form 4 is filed with the Securities and Exchange Commission by insiders 
  to report transactions in their companies' shares.  Open market purchases 
  and sales must be reported within two business days of the transaction. 
Insider Data Source: The Washington Service 
                     ([email protected] or 301-913-5100)