tower type public traded as nasdaq bokf industry financial services founded 1910 headquarters tulsa oklahoma usa key people george b. kaiser chairman products consumer banking corporate banking energy banking wealth management foreign currency exchange investment banking revenue us 360m fy 2015 1 net income us 59.6 m fy 2015 1 total assets us 31.5 b fy 2015 2 total equity us 3.23 b fy 2015 2 number of employees 4 800 website www.bokf.com bok financial corporation is a us based financial services holding company in the west south central states region of the united states with 4 800 employees and operations in ten states servicing clients around the country . headquartered in the bok tower in downtown tulsa oklahoma the company began as an energy bank more than 100 years ago during the early century oil boom . today it maintains its strength in the energy sector but has successfully diversified into a variety of industries businesses and geographies all of which provide footing for its steady financial position . bok financial s holdings include bokf na bosc inc. and the milestone group . bokf na operates transfund cavanal hill investment management and seven banking divisions bank of albuquerque bank of arizona bank of arkansas bank of kansas city bank of oklahoma bank of texas and colorado state bank and trust . bokf na has full service banks located in eight states . bokf has a market value of approximately 3422 million usd as april 7 2016 . 3 contents 1 corporate history 1.1 foundation 1.2 expansion 2 sponsorships 3 references 4 external links corporate history edit foundation edit bok financial traces its roots to the exchange national bank of tulsa which was formed in 1910 when four men bought the remains of the failed farmers national bank . 4 one of the bank s major investors was harry f. sinclair who became the bank s president . 5 in 1917 exchange national bank of tulsa 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 . 6 during the great depression several tulsa oil men including william g. skelly and j.a. chapman pumped 18 million of their own wealth into the bank to keep it afloat . as a result it was a major player in the early 1930s oil boom . in 1933 it was reorganized as the national bank of tulsa nbt . 7 8 in 1975 nbt changed its name to bank of oklahoma bok . the following year bok began moving its headquarters employees into the new bok tower . 5 expansion edit in 1986 the federal deposit insurance corporation granted bank of oklahoma its open bank assistance package and it was bought in 1990 by tulsa businessman george kaiser . 5 at the time it was a 2 billion bank with 20 branches in oklahoma . 9 under kaiser s ownership bok began an aggressive expansion effort with the strategy to locate in growing markets near oklahoma . 10 11 currently bok financial operates banks in 8 states including oklahoma new mexico arizona arkansas texas colorado kansas and missouri . in 2007 bok financial continued their aggressive push expanding market share in the dallas fort worth area . currently the bank of texas is the 8th largest bank based in texas with assets of 3.7 billion . 12 on august 17 2012 bok financial acquired milestone group . the acquisition is the first since 2007 . 13 in march 2014 bok financial announced the acquisition of mbm advisors inc. of houston texas . on december 8 2015 bok financial announced the purchase of mbt bancshares ; the parent company of missouri bank and trust of kansas city informally known as mobank . 14 sponsorships edit tulsa s bok center designed by noted architect c sar pelli . in 2005 bok financial acquired the naming rights for the bok center for a price of 11 million usd . 15 references edit a b bok financial bokf annual sec income statement filing via wikinvest . a b bok financial bokf annual sec balance sheet filing via wikinvest . bok financial corporation . retrieved april 7 2016 . oklahoma banks closed. ; new york times . state concern forced to the wall by failure of national bank a b c laurie winslow bank of oklahoma celebrates 100 years tulsa world november 15 2010 . historic tulsa the bank at 320 south boston hurst v. kravis 1958 ok 290 333 p. 2d 314 case number 38477 decided 12 16 1958 supreme court of oklahoma thurman s. hurst guardian ad litem and trustee etc. plaintiffs in error v. raymond f. kravis louis p. myers and national bank of tulsa cotrustees et al. defendants in error . graham ginnie . tulsa weathered other failures . tulsa world 2008 08 30 . bok enters salt lake market tulsa world 4 27 2007 the muskogee banking market is defined as including the muskogee rma and the remainder of muskogee county ; all of cherokee county ; the town of wagoner in wagoner county ; and the town of checotah in mcintosh county . vian state bank vian oklahoma cfr 1996 reaffirmed in bok financial corp. tulsa oklahoma 1999 . bok enters muskogee oklahoma market citizens holding company bok expands in texas oklahoman 6 1 2007 bok financial acquires milestone group wealth management firm . tulsa world . retrieved august 19 2012 . bok financial to acquire mbt bancshares . investor.bokf.com . retrieved 2015 12 09 . bok financial corp press release bank of oklahoma to pay 11 million for tulsa arena naming rights 27 oct 2005 ofchq.snl.com cache 1500007029.doc external links edit nasdaq summary quote datamonitor company overview d & b hoovers financial profile corporate website corporate careers page v t e 50 largest banks and bank holding companies in the united states ally american express bancwest bank of america bank of new york mellon bb & t bbva compass bmo harris capital one charles schwab cit citigroup citizens comerica deutsche discover e trade fifth third first niagara ge capital goldman sachs hsbc bank usa huntington john deere jpmorgan chase key m & t morgan stanley mufg union mutual of omaha nationwide new york community northern trust people s united pnc popular rbc usa regions santander state farm state street suntrust svb synchrony td tiaa u.s. usaa wells fargo zions indicates the u.s. subsidiary of a non u.s. bank . inclusion on this list is based on u.s. assets only and is current as of december 31 2015 . retrieved from https en.wikipedia.org w index.php title bok financial corporation & oldid 741498472 categories banks based in oklahomacompanies based in tulsa oklahomacompanies listed on nasdaq navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages deutsch edit links this page was last modified on 27 september 2016 at 21 49 . text is available under the creative commons attribution sharealike license ; 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