BOK Financial, Headquartered in Tulsa, Oklahoma, BOK Financial Corporation (NASDAQ: BOKF) is a top U.S.-based financial services holding company with operations in Oklahoma, Texas, Arizona, Arkansas, Colorado, Kansas, Missouri, Tennessee and New Mexico. This level of knowledge is normally acquired through completion of a Bachelor’s Degree in Accounting and 5+ years combined experience in a bank or in public accounting firm serving bank clients, or 8+ years equivalent work experience.