Bank of Oklahoma is a commercial bank which provides consumer, business, commercial and wealth management banking services. The bank also provides investment advisory, asset management asset, custody, and reporting performance measurement services, as well as bond trustee, escrow, 1031 exchange, and bondholder relations services. In addition, Bank of Oklahoma provides investment and trust services, mortgage origination and servicing and an electronic funds transfer network. Bank of Oklahoma is a subsidiary of BOK Financial, a $24 billion regional financial services company based in Tulsa, Oklahoma.