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 high school diploma or equivalent and a minimum of 1+ years of sales or customer service experience; a college degree is a plus or equivalent combination of education and experience.