BOK Financial Corporation is a financial holding company. BOK Financial offers service banking in Oklahoma, Texas, New Mexico, Northwest Arkansas, Colorado, Arizona, and Kansas/Missouri. BOKF, NA (the Bank) is a wholly owned subsidiary bank of BOK Financial. Other wholly owned subsidiaries of BOK Financial include BOSC, Inc., a broker/dealer that engages in retail and institutional securities sales and municipal bond underwriting. BOK Financial operates three principal lines of business: commercial banking, consumer banking and wealth management. These services include depository and cash management; lending and lease financing; mortgage banking; securities brokerage, trading and underwriting; and personal and corporate trust. On August 15, 2012, it acquired a majority voting interest in a Delaware limited liability corporation and its wholly owned subsidiary, a Tulsa-based aircraft parts supplier and repair facility. On August 19, 2012, the Company acquired The Milestone Group, Inc.