BOK Financial Corporation 5.375% Subordinated Notes due 2056, also called BOK Financial 5.375% Sub. Notes 2056, is a holding company, which engages in the provision of financial solutions. Read More It operates through the following segments: Commercial Banking, Consumer Banking, Wealth Management, and Funds Management. The Commercial Banking segment includes lending, treasury, and cash management services, as well as customers risk management products for small businesses, middle market, and larger commercial customers. The Consumer Banking segment offers retail lending and deposit services; lending and deposit services to small business customers served through the retail branch network; and all mortgage banking activities. The Wealth Management segment provides fiduciary services, private bank services, and investment advisory services in all markets, as well as underwriting state and municipal securities. The Funds Management unit manages overall liquidity needs and interest rate risks. The company was founded in 1990 and is headquartered in Tulsa, OK.