Exhibit 99.1

NASD: BOKF


For Immediate Release                                Contact:
- ---------------------
February 9, 2010                                     Jesse Boudiette
                                                     (918) 588-6532

                                                     Francie Monteith
                                                     (505) 222-8488



BOK  FINANCIAL  PURCHASES  RIGHTS TO SERVICE  $4.1 BILLION  MORTGAGE  LOANS FROM
ALBUQUERQUE-BASED CHARTER BANK

The  acquisition  increases  BOK  Financial's  existing  mortgage  activity  and
enhances mortgage servicing market share for its Bank of Albuquerque subsidiary


Tulsa-based  BOK  Financial  Corp.  has  acquired  the  rights to service a $4.1
billion portfolio of mortgage loans from Albuquerque-based Charter Bank.

The 34,400 loans are largely concentrated in New Mexico, with the remainder
representing Texas, Oklahoma, Kansas, Arizona, Colorado and Idaho. The loans to
be serviced by BOK Financial are predominantly held by Fannie Mae, Freddie Mac
and Ginnie Mae. The acquisition will mean a 46% increase of BOK Financial's
current $7.4 billion mortgage servicing portfolio.

"We are pleased to announce the completion of this acquisition," said BOK
Financial President and CEO Stan Lybarger. "This is an attractive portfolio and
we are eager to serve the needs of our new customers."

The acquisition follows a very successful year in 2009 for BOK Financial's
mortgage group, which funded just over $3 billion in loans in 2009, up sharply
from $1.3 billion in 2008.

Although the acquisition is complete, the actual transfer of mortgage loans will
take place in early April. Prior to the transfer, in mid March, customers will
receive detailed communication explaining how to make mortgage payments in the
future. The advance communication will provide details about the exact date of
transfer and will provide contact information for questions.

"We have a local presence in Albuquerque, with a local mortgage team to meet
future mortgage needs. In addition, "Our mortgage servicing team is very
talented and we already service loans for most of these markets represented by
this acquisition." said Ben Cowen, President of BOK Financial's mortgage group.

The full-service local market bank subsidiaries of BOK Financial provide the new
customers with additional options for service and also access to an expansive
set of products and services to address any additional financial needs they may
have. Approximately three quarters of the acquired mortgage loans are with
customers in New Mexico, where BOK Financial operates its Bank of Albuquerque
subsidiary.

"We are pleased to have this opportunity to welcome our new customers and are
confident they will enjoy working with our professional team of bankers.," said
Bank of Albuquerque Chairman Jennifer Thomas.

About Bank of Albuquerque
Bank of Albuquerque offers the strength and diverse products and services of a
big bank with the thoughtful service style of a community bank. The bank offers
convenience, with 22 branch locations, 24-hour ExpressBank customer service and
7-day-a-week banking in select Albertsons stores. Customer service and more
information is available at 505.855.0855, online at www.bankofalbuquerque.com or
any branch location.

About BOK Financial Corp. BOK Financial is a regional financial services company
that provides  commercial and consumer  banking,  investment and trust services,
mortgage  origination and servicing,  and an electronic funds transfer  network.
Holdings  include Bank of  Albuquerque,  N.A.,  Bank of Arizona,  N.A.,  Bank of
Arkansas, N.A., Bank of Oklahoma, N.A., Bank of Texas, N.A., Colorado State Bank
& Trust,  N.A., Bank of Kansas City, N.A.,  BOSC, Inc.,  Cavanal Hill Investment
Management,  Inc., the TransFund  electronic funds network,  and Southwest Trust
Company,  N.A. Shares of BOK Financial are traded on the NASDAQ under the symbol
BOKF. For more information, visit www.bokf.com.