BOK Financial Corporation

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BOK Financial Corporation
TypePublic company
Russell 1000 Index component
Founded1910; 112 years ago (1910), as Exchange National Bank of Tulsa
1990; 32 years ago (1990), rebranded as BOK Financial Corporation
HeadquartersTulsa, Oklahoma, US
Areas served
Nationwide service area with bank operations in Arizona, Arkansas, Colorado, Kansas, Missouri, New Mexico, Oklahoma, Texas
Key people
George Kaiser, chairman
Stacy Kymes, CEO & President
Steven E. Nell, CFO
RevenueIncrease US$1.83 billion (Fiscal Year Ended 31 December 2021)[1]
Increase US$618.1 Million (Fiscal Year Ended 31 December 2021)[1]
AUMIncrease US$104.9 billion (Fiscal Year Ended 31 December 2021)[1]
Total assetsIncrease $50.2 billion (Fiscal Year Ended 31 December 2021)[1]
Total equityIncrease $5.4 billion (Fiscal Year Ended 31 December 2021)[1]
OwnerGeorge Kaiser (53%)
Number of employees
4,900 (2021)
Footnotes / references

BOK Financial Corporation — pronounced as letters, "B-O-K" — is a financial services holding company headquartered in Tulsa, Oklahoma. Offering a full complement of retail and commercial banking products and services across the American Midwest and Southwest, the company is one of the 50 largest financial services firms in the U.S.,[3] and the largest in Oklahoma.

The company's banking subsidiary, BOKF, NA, operates under the brands Bank of Oklahoma, Bank of Texas, and Bank of Albuquerque, and it operates as BOK Financial in Arizona, Arkansas, Colorado, Kansas, and Missouri.[4] It also operates ATM and debit card processor TransFund, Cavanal Hill Investment Management, BOK Financial Securities, BOK Financial Advisors, BOK Financial Insurance, and BOK Financial Asset Management.

The company is more than 50% owned by George Kaiser, who acquired the bank in 1991 from the FDIC. Known for its energy roots, as of June 30, 2021, 14% of its loan portfolio was to borrowers in the petroleum industry.


BOK Financial was formed in 1910 primarily as a source of capital for the energy industry and broadened its geographic and market reach to become one of the largest and most multifaceted regional financial institutions in the country.

The company traces its roots to the Exchange National Bank of Tulsa, which was formed in 1910.[5][6] In 1917, Exchange National Bank began construction of a headquarters building in Tulsa at Third Street and Boston Avenue. In 1928, the bank constructed a 28-story tower adjacent to the initial building. The combined structure, since renamed the 320 South Boston Building, remained the tallest building in Tulsa until 1967.[7] The bank has continuously operated a branch in the building since then.

The bank was rebranded as National Bank of Tulsa in 1933[6][8] and in 1975 to Bank of Oklahoma to reflect its statewide approach. Also in 1975, the bank installed the first automated teller machine in Oklahoma.[6][9] The following year, the company began moving employees into the new BOK Tower and in 1979, the bank reached $1 billion in assets.[6]

Five years later, in 1984, the company merged with Fidelity of Oklahoma and reached $3 billion in assets.[6]

On June 7, 1991, with the company's assets totaling just under $2 billion, it was acquired by George Kaiser for $61 million in a sale facilitated by the FDIC. Under Kaiser's ownership, BOK Financial developed a strategy to locate in growing markets near Oklahoma.[6][10]

Footprint and family of brands[edit]

Beginning in 1994, the company steadily expanded its footprint beyond Oklahoma, with moves into:

  • Arkansas in 1994 through the acquisition of a bank holding company with operations in northwest Arkansas.[6]
  • Texas through the acquisition of Bank of Texas in 1997.[11]
  • New Mexico in 1998 with the acquisition of 17 branches[6] that were renamed Bank of Albuquerque.
  • Colorado in 2003 with the formation of Colorado State Bank.[6]
  • Arizona in 2005 with the formation of Bank of Arizona.[6]
  • Missouri in 2016 through the acquisition of MBT Bancshares, the parent company of Missouri Bank and Trust of Kansas City.[12]

In addition, in 2018, the company acquired Colorado-based CoBiz Financial and rebranded its Colorado and Arizona operations "BOK Financial."[13] Shortly thereafter, the company the company rebranded its operations in Missouri, Kansas and Arkansas as BOK Financial.

Tulsa's BOK Center, designed by noted architect César Pelli.

In 2005, the company acquired the naming rights for the BOK Center, for $11 million.[14]

Specialty lines of business[edit]

In addition to its legacy energy financing expertise, BOK Financial specializes in healthcare-related finance, offering financial and banking services to owners and operators of senior housing and care facilities, hospitals, and health systems, as well as to physicians and specialized practices.

BOK Financial works with tribal nations and governments to facilitate financial solutions for healthcare, education, and tribal infrastructure purposes. With more than 45 tribal relationships across the U.S., the company has helped raise more than $3 billion for tribal projects in recent years. BOK Financial currently manages more than $4 billion in assets for tribal governments and business.

Partnering with heavy equipment distributors throughout the U.S., BOK Financial equipment finance provides financial services and lending capacity for borrowers within the construction and aggregate, crane and lift, power and transportation, and agriculture industries.


  1. ^ a b c d e "BOKF Financial Corporation 2021 Annual Report Results" (PDF). December 31, 2021. Retrieved June 2, 2022.
  2. ^ "BOK Financial Corporation 2017 Form 10-K Annual Report". U.S. Securities and Exchange Commission.
  3. ^ "Federal Reserve Statistical Release - Large Commercial Banks". December 31, 2021. Retrieved May 25, 2021.
  4. ^ "BOK Financial Opportunity Banking receives national certification" (Press release). BOK Financial Corporation. May 5, 2022.
  5. ^ "OKLAHOMA BANKS CLOSED: State Concern Forced to the Wall by Failure of National Bank". The New York Times. December 15, 1909.(subscription required)
  6. ^ a b c d e f g h i j WINSLOW, LAURIE (November 14, 2010). "Bank of Oklahoma celebrates 100 years". Tulsa World.(subscription required)
  7. ^ "Historic Tulsa: The Bank at 320 South Boston".
  8. ^ GRAHAM, GINNIE (August 30, 2008). "Tulsa weathered other failures". Tulsa World.(subscription required)
  9. ^ "The Panic of 1907 and the Savings and Loan Crisis", The Financial Crisis and Federal Reserve Policy, Palgrave Macmillan, 2013, doi:10.1057/9781137401229.0008, ISBN 9781137401229
  10. ^ HARDIMAN, SAMUEL (June 7, 2016). "BOK Financial experiences 25 years of growth under George Kaiser". Tulsa World.
  11. ^ "BOK Financial Acquires Two Dallas Companies". The Oklahoman. March 2, 1999.
  12. ^ "BOK Financial Receives Regulatory Approvals to Acquire MBT Bancshares" (Press release). GlobeNewswire. November 16, 2016.
  13. ^ "BOK Financial Corporation to Acquire CoBiz Financial" (Press release). GlobeNewswire. June 18, 2018.
  14. ^ Mecoy, Don (October 28, 2005). "BOK will pay $11 million to name Tulsa arena". The Oklahoman.

External links[edit]