Exhibit 13.0

RELATIONSHIPS DRIVE RESULTS
BOK FINANCIAL CORPORATION | 2005 ANNUAL REPORT



Map shown and accompanied by the captions:

COLORADO
Since BOKF acquired Colorado State Bank & Trust, N.A. in 2003,  average
assets have more than doubled to $874  million.  The newly opened  Orchard Falls
branch makes five full service  locations in the Denver area,  including  two in
Douglas County - one of the top 20 fastest growing counties in the U.S.

KANSAS/MISSOURI
The Kansas City loan  production  office has  outstanding  loan
commitments  exceeding  $300 million at December  31,  2005.  We've been serving
retail  clients in the Kansas City  market  since 1999  through  our  investment
center and our two morgage origination  offices,  with one on either side of the
state line.

OKLAHOMA
With 74 full-service  banking  locations  statewide  complemented by an
extensive ATM network,  Bank of Oklhoma,  N.A. is the state's leading bank, with
twice the deposit market share of our closest competitor. We also are the leader
in trust, commercial and cosnumer lending,  transaction card services and public
finance.

ARKANSAS
Bank of Arkansas,  N.A.'s two full service  branches are located in the
northwest region of the state where the economy is flourishing. Our third branch
is scheduled to open in  Bentonville  in the third quarter of 2006.  Our largest
institutional  investments  sales office is located in the state's  capital of
Little Rock.

TEXAS
Since BOKF's entry in the Texas market in 1997,  average assets have grown
to $3.4 billion.  With 23 banking  locations in the  Dallas/Fort  Worth area and
another 14 locations in the Houston area, Bank of Texas,  N.A. is now the eighth
largest bank headquartered in the state and contributes 25% of BOKF earnings.

NEW MEXICO
Beginning as a consumer  branch  network  acquired in 1998,  Bank of
Albuquerque,  N.A.  has  grown to the  fourth  largest  bank in  Albuquerque  as
measured by deposit market share. Our 19 convenient locations in Albuquerque are
complemented by one full service location in Santa Fe.

ARIZONA
After entering the dynamic Phoenix market in 2004 with a successful loan
production  office,  BOKF acquired a bank in 2005 which it subsequently  renamed
Bank  of  Arizona,  N.A.  The two  full  service  branches  are  located  in the
Phoenix/Scottsdale  area. Already one of the top ten largest cities, Phoenix is
the fastest growing city in the U.S.



FINANCIAL HIGHLIGHTS
(Dollars in Thousands Except Per Share Data)


                                                              2005              2004            2003
For the year:
                                                                                   
Net income                                                $ 201,505         $179,023        $158,360

Period-end:
Loans                                                     9,139,978        7,928,967       7,483,889
Assets                                                   16,252,907       14,145,660      13,595,598
Deposits                                                 11,375,318        9,674,398       9,219,863
Shareholders' equity                                      1,539,154        1,398,494       1,228,630
Nonperforming assets(1)                                      33,638           56,423          59,867

Profitability Statistics
Earnings per share (based on average equivalent shares):
   Basic                                                  $    3.14         $   3.00        $   2.67
   Diluted                                                     3.01             2.68            2.38
Percentages (based on daily averages):
   Return on average assets                                    1.29 %           1.28 %          1.24 %
   Return on average shareholders' equity                     13.78            13.80           13.66

Common Stock Performance
Per Share:
   Book value per common share                            $   23.07         $  23.28        $  20.60
   Market price: December 31 close                            45.43            48.76           38.72

Selected Balance Sheet Statistics
Period-end:
   Tier 1 capital ratio                                        9.84 %          10.02 %          9.15 %
   Total capital ratio                                        12.10            11.67           11.31
   Leverage ratio                                              8.30             7.94            7.17
   Reserve for loan losses to non performing loans           412.83           206.26          217.89
   Combined reserves for credit losses to loans (2), (3)       1.37             1.61            1.73

Miscellaneous (at December 31)
Number of banking locations                                     150              149             142
Number of TransFund locations                                 1,421            1,389           1,442



(1) Includes nonaccrual loans, renegotiated loans and assets acquired in
    satisfaction of loans. Excludes loans past due 90 days or more
    and still accruing.
(2) Excludes residential mortgage loans held for sale.
(3) Includes reserve for loan losses and reserve for off-balance sheet credit
    losses.




RELATIONSHIPS  DRIVE RESULTS
Our continued  investment in building deeper,  more complete  relationships with
our clients  provided the  foundation  for the strong  results for BOK Financial
Corporation  (BOKF)  in  2005.  Our 15th  consecutive  year of  record  earnings
included  net income of $201.5  million and  earnings per share of $3.01 - a 12%
increase  over  2004.  Loan  growth of 15% was very  strong  and  well-balanced,
geographically  and by industry.  All of the BOKF subsidiary  banks  experienced
solid  growth.  The banks outside  Oklahoma  produced over half of our growth in
earnings and now represent close to 40% of BOKF's total income.

Our core  strategy  for many  years has been to provide  nationally  competitive
products delivered with local community bank service, but others share a similar
strategy. In an increasingly  commoditized business, BOKF has been successful by
being more creative,  flexible,  and  responsive  than the  competition.  BOKF's
greatest  strength is the ability to attract and retain top talent and create an
environment  which helps talented and  entrepreneurial  people excel.  It is the
interplay of these factors and strong  relationships with our customers that has
significantly enhanced shareholder value over the past 15 years.

In addition to the robust  financial  accomplishments  in 2005,  we continued to
build the  foundation  for  future  growth.  In April,  we  completed  our first
acquisition in Phoenix,  Arizona which we subsequently  renamed Bank of Arizona.
We added  significantly  to our talent in Houston in the first half of the year,
and benefited from accelerated growth in the second half,  increasing loans at a
30% annualized  rate. In the fourth  quarter,  we added a team of talented local
bankers  in Kansas  City to  provide  agribusiness  and  middle  market  lending
services  to continue to increase  our  presence in a market  where,  despite no
full-service  banking locations,  we have enjoyed solid growth. We also laid the
groundwork  for  successful  expansion  into the Tucson,  Arizona  and  Boulder,
Colorado markets in 2006.

Another  notable  achievement in 2005 was the addition of two key members to the
management  team.  Don Parker joined BOKF to lead our  Operations and Technology
Division.  Don is  committed  to  ensuring  that the  quality of our service and
support  provides a  competitive  edge for BOKF as we continue to grow.  We also
named  Jean-Claude  Gruet  to  lead  our  equity  investment  management  group.
Jean-Claude is charged with substantially  expanding our offering and delivering
top tier performance to our clients.

As we look forward to 2006,  we remain  focused on building on the strong record
of earnings  growth that has been the hallmark of BOKF.  Our diverse  sources of
non-interest  revenue,  which in total  comprised  44% of total revenue in 2005,
provide  stability  and growth  during  periods when the interest rate or credit
environments  are less  favorable.  The  outstanding  growth  potential  of our
regional  markets should yield continued  strong loan and deposit growth as well
as expansion opportunities for our fee-based lines of business.

Our success,  past and future,  is dependent  upon people.  The faces you see in
this year's annual report  represent the thousands of talented BOKF team members
who  continue  to work hard for our  clients.  Their  efforts  enable us to be a
provider of choice in the markets we serve. We want to express our  appreciation
to all the members of the BOKF team and the many  thousands  of loyal  customers
they serve.

/s/ George B. Kaiser           /s/ Stanley A. Lybarger
___________________________    ____________________________________
Chairman                       President and Chief Executive Officer




COMMERCIAL

BOKF remains steadfastly  focused on developing long term banking  relationships
by partnering with our commercial  clients to provide the financing and services
they need to grow and  prosper.  Our  experienced,  knowledgeable  bankers  work
closely with each client to determine their specific needs and offer  innovative
solutions.  We offer a wide range of financial  products and services  including
loan and lease  financing,  treasury and cash  management,  international  trade
services and even financial risk management,  including  interest rate,  energy,
foreign  exchange and cattle hedging  products.  Growth in the  commercial  loan
portfolio is evidence of our forte in middle market and small business  lending.
While our five year compound average growth rate is a strong 10%, the commercial
loan portfolio grew 18% in 2005.

In 2005,  we made an  investment  in  technology  to enhance our client  service
capabilities to allow us to more  efficiently  offer our full range of financial
products  and  services.  With our new sales force  automation  initiative,  our
bankers  are in a better  position  to  evaluate  a  client's  financial  needs,
opportunities  and  profitability.  This  integrated  system  facilitates  cross
selling  and  enables  predictive  selling.  Another  important  benefit of this
initiative  is that our bankers are spending less time in their offices at their
computers and more time with existing and potential clients.  Though we are just
beginning  to reap the  benefits,  the  payoff is clear.  In  Oklahoma  in 2005,
commercial  lending  relationships  with new clients were up 35% compared to the
prior year.

As we have sought out new business, we have continued to uphold our conservative
underwriting  standards.  Our centralized  credit oversight is efficient and our
well  defined  and  consistently  applied  standards  ensure the  quality of the
portfolio.  While  our five year  average  is more  indicative  of our long term
commercial credit losses,  in 2005, net chargeoffs  decreased to 12 basis points
while  nonperforming  assets  decreased from 70 basis points in 2004 to 23 basis
points.

COMMERCIAL LOANS in Billions graph shown here.  Data points are:
01  $5.0
02  $5.4
03  $6.0
04  $6.2
05  $7.3

COMMERCIAL NET CHARGE-OFF RATIO graph shown here.  Data points are:
01  .34
02  .23
03  .27
04  .21
05  .12

COMMERCIAL LOAN PORTFOLIO graph shown here.  Data points are:
Energy 19%
Manufacturing 7%
Wholesale Retail 11%
Agricultural 4%
Healthcare 7%
Services 20%
Other Commercial & Industrial 5%
Commercial Real Estate 27%



REGIONAL

The core  strategies  for Regional  Banking  focus on  developing  and enhancing
client  relationships  by providing  highly  qualified,  empowered  relationship
managers  that take a personal  interest in their  clients.  While we centralize
administrative  and back  office  functions,  we place a premium on  maintaining
local  independence  in client service areas.  To execute our strategy for local
growth,  we seek out proven  talent  with tenure and  influence.  With the right
people  in the  right  markets,  the  results  are  outstanding  - our five year
compound annual growth rate is 19% for loans and 25% for deposits.

Our well established local management  enables us to be responsive;  our growing
scale enables us to be increasingly efficient while offering a complete range of
services. By delivering sophisticated products with a highly responsive personal
touch, Regional Banking fueled over half of BOKF's growth in loans, deposits and
earnings since 2001.

Beginning  with our entry in Dallas,  Texas in 1997,  BOKF has carefully  chosen
dynamic  new  markets  for  expansion.  Our  loan  and  deposit  portfolios  are
increasingly  reflecting  our geographic  diversity.  Markets  outside  Oklahoma
fueled 60% of the growth in loans and deposits in 2005 and  accounted for 41% of
the portfolios at year end.  Regional  Banking's  contribution to net income has
grown from 28% in 2001 to 38% in 2005.  During this  period,  gross  revenue has
grown at a compound annual rate of 21%. There are  opportunities for significant
growth in fee  revenue  as we  continue  to  export  our  services  in our newer
markets.

Though  organic growth  continues to be our primary  focus,  we will continue to
pursue acquisition opportunities in our footprint that would benefit our clients
and shareholders.  Of the $6.4 billion in average assets outside Oklahoma,  $2.4
billion were  acquired.  Our  disciplined  acquisition  approach  and  effective
integration yield impressive  returns.  Bank of Albuquerque,  N.A.,  acquired in
1998,  generated a 21% return on invested  capital in 2005, while Bank of Texas,
N.A., which is far from maturity, generated 14%.

REVENUES BY STATE graph shown here.  Data points are:
         2001         2005
OK       72%           61%
TX       19%           22%
NM       7%            8%
AR       2%            3%
CO       0%            5%
AZ       0%            1%

REGIONAL DIVESITY - LOANS BY MARKET in Millions graph shown here.  Data points
are:
         OK           All Other Areas
01       68%           32%
02       66%           34%
03       62%           38%
04       62%           38%
05       59%           41%

REGIONAL DIVERSITY - DEPOSITS BY MARKET in Millions graph shown here.  Data
points are:
         OK           All Other Areas
01       69%           31%
02       66%           34%
03       63%           37%
04       62%           38%
05       59%           41%



CONSUMER

We value our  clients and strive to deliver the best advice and service for each
client's unique situation. The core of our Perfect Banking strategy, launched in
2001,  is to create  an  exceptional  client  experience  during  each and every
contact.  The  process  includes  a  continuous  training  program  centered  on
improvement  and features a client profile  designed to help identify needs that
can be satisfied through an expanded  relationship with our bank. The success of
this program is  demonstrated  by the 26% compound  annual  growth rate over the
last five years in sales points,  which measure the profit  contribution  of new
business. Helping our clients make the best possible financial decisions sets us
apart from other transaction-focused retail banks.

Consumer  Banking's vision strives to benefit each of our primary  constituents;
our clients receive quality assistance,  our employees  experience career growth
and job  satisfaction,  and our  shareholders  gain from the ultimate  result of
increased profit. The results are exceptional. Since 2001, consumer deposits and
fee income have grown at annual compound rates of 10% and 23%, respectively. Our
footprint provides ample opportunity for this impressive growth to continue. Ten
of the 28 counties we serve are among the 100  fastest  growing  counties in the
United States as measured by numerical increase in population.

We understand that time and value are paramount to today's consumers so we offer
more conveniences and benefits. In addition to free checking,  our clients enjoy
free online bill pay.  Nearly 30% of our clients utilize our free online banking
service  while the number of bill pay users has increased  five-fold  since late
2003.  Forty  eight of our 137  branches  are instore  locations  which are open
extended hours. A client service  representative  is available 24 hours a day, 7
days a week at ExpressBank,  our contact center. In 2005, ExpressBank celebrated
its 10th year of continuous  service,  averaging 790,000 phone calls each month,
124,000  of which are  handled  by a live  ExpressBanker  located  in one of our
domestic offices.

CONSUMER DEPOSITS & FEE INCOME graph shown here.  Data points are:
         Consumer Deposits          Fee Income
01          $2.9 Billion             $39.0 Million
02          $3.1 Billion             $52.6 Million
03          $3.6 Billion             $66.0 Million
04          $4.1 Billion             $80.7 Million
05          $4.5 Billion             $94.9 Million

SALES POINTS graph shown here.  Data points are:
01             380 thousand
02             520 thousand
03             590 thousand
04             640 thousand
05             750 thousand

NUMBER OF PERSONAL CHECKING ACCOUNTS graph shown here.  Data points are:

01             175 thousand
02             200 thousand
03             229 thousand
04             257 thousand
05             279 thousand



TRANSACTION CARD

Transaction cards are a fundamental part of our client  relationships.  For over
25 years,  TransFund,  our electronic funds transfer network,  has been offering
integrated payment solutions to merchants and financial  institutions.  Merchant
services,  which includes  revenue from  processing card  transactions  for over
7,000 merchant  locations,  represents 35% of TransFund's 2005 revenue.  Network
revenue,  which  includes  debit card support and  processing  for more than 360
financial institutions in 12 states,  represents 43% of revenue while check card
transaction  revenue  represents  the  remaining  22%.  As the 10th  largest ATM
network,  TransFund  has over  1,400  ATMs  conveniently  located  in  financial
institutions, grocery stores and convenience stores.

While  TransFund's 16% five year compound  annualized growth rate in transaction
volume is partially attributed to the impressive growth in BOKF's deposit client
base,  much of it is due to our sales efforts to other  financial  institutions.
The number of clients outside Oklahoma has increased 50% in the last five years.
TransFund's 1.5 million cardholders throughout a 12 state area have come to rely
on the red and white TransFund logo.

TransFund's 13% compound annualized revenue growth rate over the last five years
is a direct  result of our focus on client  relationships.  Though we do offer a
cost advantage over the  competition  with our surcharge-  free zones, it is our
unparalleled   reputation  for  quality  service  that  attracts  and  maintains
business.  From the first  contact to the  on-site  personalized  training,  our
dedicated, knowledgeable EFT professionals, many of whom have more than 20 years
of service with the company, guide financial institutions through the process of
implementation and growth.

TRANSACTION CARD REVENUE in Millions graph shown here.  Data points are:
01  $44
02  $52
03  $57
04  $65
05  $72

MERCHANT SALES PROCESSED in Millions graph shown here.  Data points are:
01  701
02  836
03  1,008
04  1,107
05  1,188

TRANSACTION VOLUME in Millions graph shown here.  Data points are:
          Purchases         ATM
01          50               45
02          65               48
03          81               50
04          99               50
05          118              49



WEALTH MANAGEMENT

BOKF's  wealth  management  group  provides  a wide  range of trust and  private
financial services to affluent individuals,  businesses and non-profit agencies.
Trust  services  include  personal  trust,   estate  and  retirement   planning,
investment  management,  retirement and  institutional  benefits,  and corporate
trust as well as mineral and real estate management. Total trust assets grew 16%
in 2005, totaling $28 billion at year end, while  discretionary  assets grew 22%
to $11 billion.

Our talented team of employees value the  relationships we have with our clients
and work very  hard to find  solutions  to client  needs  instead  of  forcing a
one-size-fitsall  product.  During 2005, this was best  illustrated  through the
introduction of our wealth management  investment team. The team is comprised of
talented and experienced  professionals  from our brokerage,  trust,  investment
management,  and private financial  services units.  Their focus is to provide a
broad and  detailed  set of unique  solutions  to ensure  that each client has a
financial advisory strategy that will achieve their stated goals and objectives.
Our  bankers  strive to earn the role of  "trusted  advisor"  to our  clients by
gaining  their  trust,  providing  useful,   personalized  advice  and  building
relationships. Our success is reflected in the 13% increase in fee revenue.

BOKF's proprietary mutual fund family, the American Performance Funds,  includes
money market,  equity and fixed income investment options.  Four of our 13 funds
rank in the top 10% of their Lipper peer groups for the calendar year 2005.  The
American Performance  Intermediate Bond Fund was ranked #1 for the calendar year
2005  according to Lipper.  During 2005,  we began an  initiative  to expand our
equity product offerings.  We recently  implemented a strategic effort to expand
our distribution capabilities and increase assets under management in our mutual
funds which grew 24% in 2005 to $3.2 billion.

TRUST FEES & COMMISSIONS in Millions graph shown here.  Data points are:

01  $41
02  $40
03  $46
04  $58
05  $65

COMPOSITION OF TRUST ASSETS graph shown here.  Data points are:

Equity        44%
Fixed Income  27%
Cash          16%
Other         13%

TRUST ASSETS in Millions graph shown here.  Data points are:
            Discretionary         Nondiscretionary
01             $9.5                       $8.7
02             $10.2                      $6.9
03             $7.8                       $11.7
04             $8.9                       $15.7
05             $10.9                      $17.5



INVESTMENT SERVICES

With 165  registered  representatives  in  offices  in 10  states,  our  tenured
investment  professionals  provide  institutional  and retail sales,  investment
banking and financial risk management  services with an unusually high degree of
personal attention and industry  knowledge.  Our financial  consultants  average
over 15 years of professional  experience in the industry,  which is more than 5
times the industry  average.  As a result,  we are uniquely  qualified to assist
individual and corporate clients in reaching their financial goals.

By knowing our clients and their financial needs, we are able to provide a level
of  professional  advice and counsel not found in other  banks.  Our  investment
professionals take a consultative approach,  helping clients to select, preserve
and grow assets  according to their investment  objectives.  In 2005, we handled
more  than  240,000  transactions  and  traded  in  excess  of $145  billion  in
securities for more than 25,000 institutional and individual investors.

Our institutional  sales  professionals work closely with our commercial banking
division to identify our clients'  investment needs. We offer a complete line of
investment  products and services  including bonds,  commercial  paper,  bankers
acceptances,   portfolio  accounting  and  pricing,  safekeeping,  analysis  and
educational  workshops to our institutional  clients which include corporations,
insurance companies,  foundations, pension funds, mutual funds, universities and
investment advisors. Over the last five years, brokerage and trading revenue has
grown at a compound annual rate of 24%.

While   always   seeking  to  attract  new   clients,   we  value  our  existing
relationships.  In 2005,  we  created a team of three  professionals  who devote
their efforts entirely to working with clients exiting benefit plans.  Though an
individual's  employment with our client may end, his relationship with BOKF can
continue.

BROKERAGE AND TRADING REVENUE in Millions graph shown here.  Data points are:
01  $20
02  $26
03  $41
04  $41
05  $44

RETAIL/INSTITUTIONAL SALES BY MARKET in Millions graph shown here.  Data points
are:
        Oklahoma       Arkansas      Texas      Other Markets
01        17.2            5.0          1.1          0.0
02        17.9            8.4          1.3          0.2
03        18.6            20.2         2.3          1.3
04        15.5            15.7         3.2          2.7
05        14.7            14.6         4.2          3.0

COMPONENTS OF REVENUE graph shown here.  Data points are:
Trading/Institutional Fees      44%
Brokerage Fees                  24%
Financial Risk Management Fees  24%
Investment Banking Revenue       8%



MORTGAGE

Our clients will make hundreds of important  decisions  during their lives,  but
few as  significant as the purchase of a new home.  With 15 mortgage  offices in
seven states,  BOKF stands ready to guide buyers through the sometimes stressful
and  confusing  process of financing a home.  From the  application  through the
servicing of the monthly payments, BOKF's focus is on client satisfaction.

BOKF's  relationships  continue after funding as we retain  servicing  rights on
traditional  mortgage products.  We service traditional mortgage loans exceeding
$4 billion for over 50,000 very satisfied  families.  In 2005,  BOKF's  mortgage
unit earned  FHLMC's  prestigious  Tier 1  designation.  The ranking is based on
servicing  efficiency and assistance  provided to  homeowners,  including  those
struggling  to  avoid  foreclosure.  For the  last  five  years,  BOKF's  annual
delinquency  rates  have  averaged  over 100 basis  points  below  the  national
delinquency rate reported by the Mortgage Bankers' Association.

As with every product and service BOKF offers, the mortgage unit serves not only
our clients, but our shareholders.  Though the earnings volatility introduced by
the mortgage unit presents short term challenges, BOKF manages for the long term
return.  The mortgage  business is a significant  contributor  to fee income and
because of its  counter-cyclical  nature,  typically  enjoys strong returns when
other fee  business  slows.  From a client  service  perspective,  by  retaining
servicing  rights we are able to ensure our clients will continue to receive the
outstanding service they have come to expect from BOKF.

BOKF  mortgage  clients  will be even better  served in 2006 as we  implement an
initiative to integrate the mortgage unit into the Consumer  Division's "Perfect
Banking"  experience.  Our  goal  is to  improve  client  service  and  increase
bank-referred business.

MORTGAGE SERVICING PORTFOLIO graphs shown here.  Data points are:
Oklahoma  63.48%
Texas      5.85%
South     11.72%
West       6.87%
Midwest    8.89%
Northeast  3.19%

Conventional Over 15 Years         57.10%
Conventional 15 Years and Less     18.90%
FHA                                13.18%
VA                                 10.18%
Other                               0.64%

LOAN ORIGINATIONS in Millions graph shown here.  Data points are:
01   $1,128
02   $1,253
03   $1,538
04   $893
05   $910



COMMUNITY DEVELOPMENT

BOKF's  dedication  to the  communities  we  serve  is  defined  in our  mission
statement and is demonstrated  in several ways in each of our markets.  BOKF and
its  employees  supported  non-profit  organizations  with over $2.7  million in
charitable grants and donations.  Our employees provide leadership on boards and
committees of 250 non-profit agencies and community  organizations and volunteer
their time for over 1,000 events and programs.

In 2005, bank employees contributed more than 24,000 hours of community service.
We read to  inner-city  school  children in Oklahoma  City;  painted,  mowed and
trimmed trees for United Way agencies in Tulsa;  and committed time and money to
directly assist  Hurricane  Katrina victims taking shelter in Houston.  Arkansas
employees  collected care package supplies for U.S. troops. In Albuquerque,  our
staff  hosted a  Spanish  language  call-in  program  for  residents  in need of
financial  services  advice.  Throughout  our  markets,  employees  conducted  a
literacy  drive that collected more than 18,000 books for agencies that care for
homeless  and  abused  children  and  families.  Through  the  course  of  these
outreaches and our support of public and private endeavors,  we will continue to
carry on our mission of improving the quality of life in all our markets.

Through our  innovative  Adopt-An-Agency  program,  BOKF has partnered  with key
community-based organizations in all of our markets to drive product, investment
and  service  alternatives  that  provide  wealth  creation  and asset  building
opportunities for low-to-moderate income families and individuals. Our work with
agencies such as Mercy  Housing,  Community  Action  Project of Tulsa County and
Mosaic Family Services, has a direct and lasting impact on the communities where
we live and work. At BOKF, we aim to do well and do good, all at the same time.

COMMUNITY DEVELOPMENT INVESTMENTS in Thousands
          Qualified Investments      MBS Qualified Investments
03             $5,914                        $31,638
04             $6,106                        $81,368
05             $7,145                        $129,428

COMMUNITY DEVELOPMENT LOANS in Thousands
          Affordable Housing          Small Business            CD Loans
03             $396,972                 $746,376                $33,343
04             $349,144                 $805,130                $29,080
05             $273,736                 $713,491                $86,000

COMMUNITY SERVICE HOURS
Arts                             1%
Board Member                     36%
Community Service                28%
Economic Development/
   Affordable Housing            1%
Financial Education and Services 4%
Education                        7%
Health and Human Services        3%
Youth Programs and Activities    20%



POSITIONED FOR A SUCCESSFUL FUTURE

The  depth  and  breadth  of  client  relationships  determine  the  growth  and
profitability  of  our  company.  BOKF's  goal  is to be our  clients'  lifelong
financial resource  fulfilling every need from consumer and commercial loans and
deposit accounts to mortgage loans. As our clients' needs change, we stand ready
to help them select,  preserve  and grow their  assets.  Our proven  methods for
generating  new business and  expanding  services to existing  clients  produced
solid results in 2005.  For the 15th  consecutive  year,  BOKF  produced  record
earnings  fueled by a  combination  of  superior  loan,  deposit and fee revenue
growth.  As we reflect on the past year,  we must once again thank our dedicated
employees whose unwavering  support for BOKF's values and  implementation of our
strategies is the core of our success story.

Relationships  drive results and our investment in people is critical to meeting
our long term objectives. As we look toward the future, our focus will remain on
our relationships with our employees,  our clients and the communities we serve,
with the ultimate  goal of all of our endeavors to build long term value for our
shareholders.  We'll  continue  to foster a working  environment  that  promotes
career development and rewards initiative, innovation, enthusiasm, team work and
performance.  We will  continue to provide our clients with the highest  quality
products and services,  keeping in mind their need for  timeliness,  convenience
and flexibility.  We will provide leadership in all of our communities for local
and regional causes,  encourage and support volunteerism among our employees and
financially  support key civic  activities  that are critical to the vitality of
the  community.  By  maintaining  excellence in  relationship  banking,  we will
continue to create value for our shareholders.

NET INCOME AND EARNINGS PER SHARE graph shown here.  Data points are:
        Net Income (in millions)         EPS
1991        15,885                       0.36
1992        29,786                       0.56
1993        39,472                       0.68
1994        45,065                       0.77
1995        49,205                       0.83
1996        54,127                       0.91
1997        68,155                       1.10
1998        79,611                       1.26
1999        89,226                       1.42
2000        100,140                      1.57
2001        116,302                      1.81
2002        147,871                      2.30
2003        158,360                      2.38
2004        179,023                      2.68
2005        201,505                      3.01

 1

Table 1     Consolidated Selected Financial Data
           (Dollars In Thousands Except Per Share Data)


                                                                                      December 31,
                                                          ---------------------------------------------------------------------
                                                                2005          2004          2003         2002          2001
                                                          ---------------------------------------------------------------------
 Selected Financial Data
    For the year:
                                                                                                  
      Interest revenue                                      $ 769,934     $ 614,284     $ 565,173    $ 574,913   $   654,633
      Interest expense                                        320,593       191,041       173,678      205,581       325,159
      Net interest revenue                                    449,341       423,243       391,495      369,332       329,474
      Provision for credit losses                              12,441        20,439        35,636       33,730        37,610
      Net income                                              201,505       179,023       158,360      147,871       114,439
    Period-end:
      Loans, net of reserve                                 9,036,102     7,820,349     7,369,105    6,797,132     6,206,190
      Assets                                               16,252,907    14,145,660    13,595,598   12,263,233    11,158,701
      Deposits                                             11,375,318     9,674,398     9,219,863    8,128,525     6,905,744
      Subordinated debentures                                 295,964       151,594       154,332      155,419       186,302
      Shareholders' equity                                  1,539,154     1,398,494     1,228,630    1,099,526       832,866
      Nonperforming assets (2)                                 33,638        56,423        59,867       56,574        50,708

 Profitability Statistics
    Earnings per share (based on average equivalent shares):
      Basic                                                 $    3.14     $    3.00     $    2.67    $    2.59   $      2.02
      Diluted                                                    3.01          2.68          2.38         2.30          1.81
    Pro forma diluted earnings per share with FAS 142 and        3.01          2.68          2.38         2.30          1.95
      FAS 147
    Percentages (based on daily averages):
      Return on average assets                                    1.29%         1.28%         1.24%        1.31%         1.12%
      Return on average shareholders' equity                     13.78         13.80         13.66        15.75         14.65
      Average shareholders' equity to average assets              9.39          9.25          9.07         8.30          7.62

 Common Stock Performance
    Per Share:
      Book value per common share (5)                       $    23.07    $    23.28    $    20.60   $    18.56  $      14.62
      Market price: December 31 close                            45.43         48.76         38.72        32.39         31.51
      Market range - High close                                  49.31         49.18         41.02        36.52         32.75
                   - Low close                                   39.79         37.29         31.00        26.80         21.31

 Selected Balance Sheet Statistics
    Period-end:
      Tier 1 capital ratio                                        9.84%        10.02%         9.15%        8.98%         8.08%
      Total capital ratio                                        12.10         11.67         11.31        11.95         11.56
      Leverage ratio                                              8.30          7.94          7.17         6.88          6.38
      Reserve for loan losses to nonperforming loans            412.83        206.26        217.89       208.31        204.71
      Reserve for loan losses to loans (1)                        1.14          1.38          1.55         1.53          1.46
      Combined reserves for credit losses to loans (1),(4)        1.37          1.61          1.73         1.72          1.66

 Miscellaneous (at December 31)
    Number of employees (full-time equivalent)                  3,825         3,548         3,449        3,402         3,392
    Number of banking locations                                   150           149           142          130           114
    Number of TransFund locations                               1,421         1,389         1,442        1,390         1,325
    Mortgage loan servicing portfolio (3)                  $4,492,524    $4,486,513    $4,746,279   $5,754,548  $  6,645,868
 ------------------------------------------------------------------------------------------------------------------------------
<FN>
(1)  Excludes residential mortgage loans held for sale.
(2)  Includes nonaccrual loans, renegotiated loans and assets acquired in satisfaction of loans. Excludes loans past due 90 days
     or more and still accruing.
(3)  Includes outstanding principal for loans serviced for affiliates.
(4)  Includes reserve for loan losses and reserve for off-balance sheet credit losses.
(5)  Conversion of Series A preferred stock added 6.9 million common shares outstanding in 2005.
</FN>



 2

MANAGEMENT'S ASSESSMENT OF OPERATIONS AND FINANCIAL CONDITION

OVERVIEW

BOK Financial  Corporation  ("BOK  Financial"  or "the  Company") is a financial
holding  company  that  offers  full  service  banking  in  Oklahoma,  Northwest
Arkansas, Dallas and Houston, Texas, Albuquerque,  New Mexico, Denver, Colorado,
and Phoenix, Arizona. The Company also has commercial loan production,  mortgage
banking and institutional sales offices in the Kansas City market. BOK Financial
was incorporated in 1990 in Oklahoma and is  headquartered  in Tulsa,  Oklahoma.
Activities  are governed by the Bank Holding  Company Act of 1956, as amended by
the Financial Services  Modernization Act or  Gramm-Leach-Bliley  Act. Principal
subsidiaries  are Bank of Oklahoma,  N.A.,  Bank of  Albuquerque,  N.A., Bank of
Arkansas, N.A., Bank of Texas, N.A, Colorado State Bank and Trust, N.A. and Bank
of Arizona,  N.A. Other  subsidiaries  include BOSC, Inc., a broker/dealer  that
engages  in  retail  and  institutional  securities  sales  and  municipal  bond
underwriting.

Our overall  strategic  objective is to emphasize  growth in long-term  value by
building on our leadership  position in Oklahoma and expanding into  high-growth
markets in contiguous  states.  We have a solid position in Oklahoma and are the
state's largest financial institution as measured by deposit market share. Since
1997, we have expanded into Dallas and Houston, Texas, Albuquerque,  New Mexico,
and  Denver,   Colorado.   During  2005,  we  acquired   Valley   Commerce  Bank
(subsequently  renamed  Bank of  Arizona,  N.A.)  in  Phoenix,  Arizona.  We are
currently exploring opportunities for further growth in our regional markets and
expansion  into the Kansas City market  through  acquisition  or de novo banking
operations.

Our  primary  focus is to  provide  a broad  range  of  financial  products  and
services,  including  loans and deposits,  cash management  services,  fiduciary
services,  mortgage  banking and brokerage and trading services to middle-market
businesses,  financial  institutions  and  consumers.  Our  revenue  sources are
diversified. Approximately 43% of our revenue comes from commissions and fees.

Commercial  banking is a significant  part of our business.  Our credit  culture
emphasizes  building  relationships by making high quality loans and providing a
full range of financial products and services to our customers.

Our acquisition  strategy targets quality  organizations  that have demonstrated
solid growth in their business lines. We provide additional growth opportunities
by hiring talent to enhance  competitiveness,  adding locations,  and broadening
product  offerings.  Our operating  philosophy  embraces  local  decision-making
through the boards of directors for each of our bank subsidiaries.

BOK Financial  operates five  principal  lines of business:  Oklahoma  corporate
banking,  Oklahoma consumer banking,  mortgage banking,  wealth management,  and
regional  banking.  Mortgage  banking  activities  include loan  origination and
servicing across all markets served by the Company.  Wealth management  provides
brokerage  and  trading,  private  financial  services and  investment  advisory
services in all markets.  Wealth management also provides  fiduciary services in
all markets  except  Colorado.  Fiduciary  services in Colorado  are included in
regional  banking.  Regional banking consist primarily of corporate and consumer
banking activities in the respective local markets.

PERFORMANCE SUMMARY

BOK  Financial's net income for 2005 totaled $201.5 million or $3.01 per diluted
share compared with $179.0  million or $2.68 per diluted share in 2004.  Returns
on average assets and shareholders' equity were 1.29% and 13.78%,  respectively,
for 2005 compared with 1.28% and 13.80%, respectively, for 2004.

Net income  growth for 2005 was  attributed  primarily  to increases in both net
interest  revenue  and fees  and  commissions  revenue,  and a  decrease  in the
provision  for credit  losses.  Net interest  revenue  grew $26.1  million or 6%
during 2005 while fees and commissions  revenue  increased $33.0 million or 11%.
The provision for credit losses  decreased $8.0 million compared to the previous
year.

Average  earning  assets  increased  $1.0  billion for 2005,  including  an $846
million increase in average  outstanding  loans.  Outstanding loans increased in
all of our  primary  markets.  Much  of  the  loan  growth  was  focused  in the
commercial  and commercial  real estate  portfolios.  Growth in average  earning
assets was funded by a $1.2 billion  increase in  interest-bearing  liabilities.
Average  interest-bearing  deposits  increased  $839  million  while  short-term
borrowings increased $325 million.  Growth in average deposits came primarily in
the  Texas,  Oklahoma  and  Colorado  markets.  Consumer  banking  and  personal
financial   services   provided  much  of  the  increases.   Growth  in  average
interest-bearing  liabilities  also  funded a $198  million  decrease in average
demand  deposits.  Net interest  margin was 3.39% for 2005,  down 6 basis points
from the previous year.

 3

Fees and  commissions  totaled $345.6  million,  which  represented 43% of total
revenue,  excluding net securities and derivatives  losses.  Revenue grew in all
business lines. Trust fees increased $7.7 million or 13% due primarily to growth
in the fair value of assets and new business generated. Transaction card revenue
grew $7.2 million or 11% due to  transaction  volumes.  Other revenue  increased
$7.9 million due largely to fees earned on margin  assets  carried in support of
the Company's derivatives business.

Operating  expenses  increased  $27.9  million  or 6%  compared  with  2004  due
primarily to increased  personnel and data  processing  costs.  Personnel  costs
increased $18.3 million as both total  employment and average  compensation  per
employee grew. Data processing  expenses increased $7.0 million,  including $3.5
million directly related to higher transaction card processing volumes.

Net income for the fourth  quarter of 2005 totaled $48.2 million or 72 cents per
diluted share  compared with $46.6 million or 70 cents per diluted share for the
fourth  quarter of 2004.  Net  interest  revenue  grew $9.9 million or 9% due to
earning  asset  growth,  partially  offset by a 4 basis point  reduction  in net
interest margin. Fees and commissions revenue increased $11.1 million or 14% due
primarily  to trust  fees,  transaction  card  revenue and fees earned on margin
assets.  Operating  expenses  increased  $12.3  million  or 11%  due  to  higher
personnel and data  processing  costs.  Earnings for the fourth  quarter of 2004
included an after-tax gain of $2.5 million or 4 cents per diluted share from the
sale of equity securities that had been acquired in prior years from a sale of a
problem loan.


CRITICAL ACCOUNTING POLICIES

APPLICATION OF CRITICAL ACCOUNTING POLICIES

Preparation of our consolidated  financial  statements is based on the selection
of certain accounting  policies,  which requires  management to make significant
assumptions and estimates.  The following discussion addresses the most critical
areas where these assumptions and estimates could affect financial condition and
results of operations.  Application of these  critical  accounting  policies and
estimates has been  discussed  with the  appropriate  committees of the Board of
Directors.  No accounting  standards with  significant  effects on our financial
condition or results of operations were initially adopted in 2005.

RESERVES FOR LOAN LOSSES AND OFF-BALANCE SHEET CREDIT LOSSES

Reserves for loan losses and  off-balance  sheet  credit  losses are assessed by
management  based on an ongoing  evaluation  of the  probable  estimated  losses
inherent in the portfolio and probable estimated losses on unused commitments to
provide financing. A consistent,  well-documented methodology has been developed
that  includes  reserves  assigned to specific  loans and  commitments,  general
reserves  that are based on a  statistical  migration  analysis and  nonspecific
reserves  that are  based on  analysis  of  current  economic  conditions,  loan
concentrations, portfolio growth and other relevant factors.

An independent  Credit  Administration  department is responsible for performing
this  evaluation for all of our  subsidiaries  to ensure that the methodology is
applied consistently.

All significant  loans and commitments that exhibit  weaknesses or deteriorating
trends are reviewed  quarterly.  Specific reserves for impairment are determined
through  evaluation  of  estimated  future cash flows and  collateral  values in
accordance with Statement of Financial Accounting Standards No. 114, "Accounting
by Creditors for the Impairment of a Loan",  regulatory accounting standards and
other authoritative literature.

General  reserves for  commercial and  commercial  real estate loan losses,  and
related  commitments,  are determined  primarily through an internally developed
migration  analysis  model.  The  purpose  of this  model  is to  determine  the
probability that each credit  relationship in the portfolio has an inherent loss
based on historical  trends. We use an eight-quarter  aggregate  accumulation of
net losses as a basis for this model.  Greater emphasis is placed on loan losses
in more recent  periods.  A minimum  reserve level is established  for each loan
grade based on long-term loss history.  This model assigns a general  reserve to
all  commercial  loans and leases and  commercial  real estate loans,  excluding
loans that have a specific impairment reserve.

Separate  models are used to  determine  the  general  reserve  for  residential
mortgage loans, excluding residential mortgage loans held for sale, and consumer
loans.  General  reserves for residential  mortgage loans and consumer loans are
based on a percent of loss experience for the preceding eight quarters. Separate
migration  factors  are  determined  by major  product  line,  such as  indirect
automobile loans and direct consumer loans.

 4

Nonspecific reserves are maintained for risks beyond those factors specific to a
particular  loan or those  identified  by the  migration  models.  These factors
include trends in the general economy in our primary  lending areas,  conditions
in  specific  industries  where we have a  concentration,  such as energy,  real
estate and agriculture, and overall growth in the loan portfolio.  Evaluation of
the  nonspecific  reserves  also  considers  duration  of  the  business  cycle,
regulatory  examination  results,  potential  errors in the  migration  analysis
models and the underlying data, and other relevant factors. A range of potential
losses is determined for each factor identified.

A  separate  reserve  for  off-balance  sheet  credit  risk is  maintained.  The
provision for credit losses includes the combined charge to expense for both the
reserve for loan losses and the reserve for off-balance sheet credit losses. All
losses  incurred  from  lending  activities  will  ultimately  be  reflected  in
charge-offs against the reserve for loan losses after funds are advanced against
outstanding commitments and after the exhaustion of collection efforts.

VALUATION AND AMORTIZATION OF MORTGAGE SERVICING RIGHTS

We have a significant  investment in mortgage servicing rights. These rights are
either  purchased  from other  lenders or  retained  from sales of loans we have
originated. Mortgage servicing rights are carried at the lower of amortized cost
or fair value. Amortized cost and fair value are stratified by interest rate and
loan type. A valuation  allowance is provided when the net amortized cost of any
strata exceeds the calculated fair value.

There is no active  market for trading in mortgage  servicing  rights.  We use a
cash flow model to determine fair value. Key assumptions and estimates including
projected  prepayment  speeds and assumed  servicing  costs,  earnings on escrow
deposits,  ancillary income and discount rates,  used by this model are based on
current  market  sources.  A  separate  third-party  model  is used to  estimate
prepayment  speeds based on interest rates,  housing  turnover rates,  estimated
loan  curtailment,   anticipated   defaults  and  other  relevant  factors.  The
prepayment  model is updated  daily for changes in market  conditions.  At least
annually, we request estimates of fair value from outside sources to corroborate
the results of the valuation model.

The  assumptions  used in this model are  primarily  based on mortgage  interest
rates.  Evaluation of the effect of a change in one assumption must consider the
effect on related  assumptions  to be  meaningful.  For example,  an increase in
mortgage  interest rates may decrease loan prepayment  speeds,  but may increase
discount rates and escrow earnings rates. Considering the effects on all related
assumptions, a 50 basis point increase in mortgage interest rates is expected to
increase  the fair value of our  servicing  rights by $3.1  million.  A 50 basis
point decrease in mortgage interest rates is expected to decrease the fair value
of our servicing rights by $4.8 million.

Permanent  impairment of mortgage  servicing  rights is evaluated  quarterly.  A
strata is  considered  to be  permanently  impaired  if the net  amortized  cost
exceeds the  calculated  fair value  assuming a 300 basis point  increase in the
applicable  interest  rates.  We  believe  that a 300 basis  point  increase  in
mortgage  interest  rates  reasonably  represents  changes  that may occur under
normal market conditions.  The net amortized cost of the asset is reduced to the
calculated fair value through a charge against the valuation allowance.

Prepayment  assumptions  also  affect the  amortization  of  mortgage  servicing
rights.  Amortization  is determined  in proportion to the projected  cash flows
over the estimated life of each loan  serviced.  The same third party model that
estimates prepayment speeds for determining the fair value of mortgage servicing
rights determines the estimated life of each loan serviced.

INTANGIBLE ASSETS

Intangible assets, which consist primarily of goodwill,  core deposit intangible
assets and other acquired intangibles,  for each business unit are evaluated for
impairment  annually or more  frequently if conditions  indicate that impairment
may have occurred.  The evaluation of possible  impairment of intangible  assets
involves significant judgment based upon short-term and long-term projections of
future performance.

The fair value of each of our  business  units is  estimated  by the  discounted
future earnings  method.  Income growth is projected over a five-year period for
each unit and a terminal  value is  computed.  The  projected  income  stream is
converted to current fair value by using a discount rate that reflects a rate of
return required by a willing buyer.

At December  31, 2005,  Bank of Texas had $155 million or 66% of total  goodwill
and  Colorado  State  Bank & Trust  had $42  million  or 18% of total  goodwill.
Because of the large concentration of goodwill in these business units, the fair
value  determined by the discounted  future earnings method was  corroborated by
comparison  to the fair  value of  publicly  traded  banks of  similar  size and
characteristics.  No  goodwill  impairment  was  indicated  by either  valuation
method.

 5

Intangible assets with finite lives, such as core deposit intangible assets, are
amortized  over their  estimated  useful  lives.  Such assets are  reviewed  for
impairment  whenever events indicate that the remaining  carrying amount may not
be recoverable.

VALUATION OF DERIVATIVE INSTRUMENTS

We use interest rate derivative instruments to manage our interest rate risk. We
also offer interest rate, commodity and foreign exchange derivative contracts to
our customers.  All derivative  instruments  are carried on the balance sheet at
fair  value.  Fair  values  for  exchange-traded  contracts  are based on quoted
prices. Fair values for over-the-counter  interest rate contracts used to manage
our  interest  rate risk are  provided  either  by  third-party  dealers  in the
contracts or by quotes provided by independent pricing services.  Interest rate,
commodity and foreign  exchange  contracts used in our customer hedging programs
are based on valuations  generated  internally by a third-party provided pricing
model.  This  model uses  market  inputs to  estimate  fair  values.  Changes in
assumptions used in this pricing model could  significantly  affect the reported
fair values of derivative assets and liabilities, though the net effect of these
changes should not significantly affect earnings.  Fair values determined by the
internal  model  are  corroborated  by  comparison  against  third-party  dealer
provided values.

Credit  risk  is  considered  in  determining   the  fair  value  of  derivative
instruments.  Deterioration in the credit rating of customers or dealers reduces
the fair value of asset contracts.  The reduction in fair value is recognized in
earnings during the current period.

INCOME TAXES

Determination  of income tax  expense  and  related  assets and  liabilities  is
complex and requires  estimates  and judgments  when  applying tax laws,  rules,
regulations  and  interpretations.  It  also  requires  judgments  as to  future
earnings and the timing of future  events.  Accrued  income  taxes  represent an
estimate of net amounts  due to or from  taxing  jurisdictions  based upon these
estimates, interpretations and judgments.

We  recognize  the  benefit of  uncertain  tax  positions  when,  based upon all
relevant  evidence,  it is more likely than not that our position  would prevail
upon audit.  A reserve for the uncertain  portion of the tax benefit is included
in current accrued income taxes. This tax contingency  reserve may reduce income
tax  expense  in  future  periods  if the  uncertainty  is  favorably  resolved,
generally  upon  completion  of  an  examination  by  the  taxing   authorities,
expiration of a statute of  limitations  or changes in facts and  circumstances.
Additional income tax expense would be recognized from the adverse resolution of
an uncertain tax position.

PENSIONS

The Company offers a defined-benefit, cash-balance pension plan to all employees
who satisfy certain age and length of service requirements.  Accounting for this
plan requires  management to make assumptions  regarding the expected  long-term
rate of  return  on plan  assets,  the  discount  rate  and the  rate of  future
compensation  increases.  Changes in these assumptions  affect pension liability
and pension expense.  Management,  in consultation  with independent  actuaries,
bases its assumptions on currently available information.

All plan assets are  invested in the American  Performance  Balanced  Fund.  The
expected  long-term  return on plan assets is based on this fund's  life-to-date
performance,   adjusted  for  any  known  or  expected  changes  in  the  fund's
composition or objectives.  The discount rate is based on current yields of high
quality fixed income securities such as AA rated industrial and utility bonds. A
25 basis point decrease in the discount rate increases the pension  liability by
approximately  $1.4  million or 3% and  pension  expense by  approximately  $300
thousand or 5%.

STOCK-BASED COMPENSATION

Stock-based compensation consists of stock options and non-vested shares awarded
to  officers  and  employees  of  the  Company.  Awards  may  be  granted  on  a
discretionary  basis  as  described  in the  employee  stock  option  plan or as
required by employment agreements and incentive  compensation plans with certain
executive officers.  Accounting for stock-based compensation requires management
to make assumptions  regarding the valuation of financial  instruments for which
there  are  no  readily  available  market  values,   achievement  of  specified
performance conditions and expected forfeiture rates.

The  majority of our stock  options  have  graded  vesting.  One-seventh  of the
options  awarded vest annually  starting one year after the grant date.  Options
expire three years after vesting.  Each tranche of these options is considered a
separate award when determining fair value.

We use the Black-Scholes option pricing model. This model requires assumptions
of expected volatility of our stock price and expected

 6

term between grant date and exercise  date,  along with other input to determine
fair value.  Expected  volatility  is based on  historical  changes in our stock
price  measured over a period that  approximates  the expected term of our stock
options.  Expected term and  forfeitures  are also based on  historical  trends.
Information  about  assumptions used to value stock options can be found in Note
13 to the Consolidated Financial Statements. Non-vested shares, which cliff-vest
five years after the grant date,  are valued at the grant date market  price for
BOK Financial common stock.

Executive   incentive  plans  and  individual   employment   agreements  include
performance  conditions that may increase or decrease the number of awards based
on future  events.  Unrecognized  compensation  cost,  which  generally  will be
recognized as expense over the service period,  based on the probable outcome of
these  conditions  is  $12.7  million.  Future  compensation  cost  ranges  from
approximately  $7.4 million,  if none of the performance  conditions are met, to
$16.3 million if all of the performance conditions are met.

ASSESSMENT OF OPERATIONS

NET INTEREST REVENUE

Tax-equivalent  net interest  revenue  totaled  $454.5 million for 2005 compared
with $428.3 million for 2004. Net interest  revenue growth was driven  primarily
by a $1.0 billion increase in average earning assets.  Average outstanding loans
increased $846 million while average securities  increased $133 million.  Growth
in average  earning  assets was funded  primarily by a $1.2 billion  increase in
interest-bearing  liabilities,  partially  offset by a $198 million  decrease in
average  demand  deposit  accounts.  Table 2 shows the  effects on net  interest
revenue of changes in average  balances and interest rates for the various types
of earning assets and interest-bearing liabilities.

Yields on average  earning  assets  and rates  paid on average  interest-bearing
liabilities  both  increased  during  2005 due  primarily  to rising  short-term
interest rates. Net interest margin,  the ratio of  tax-equivalent  net interest
revenue to average  earning  assets,  decreased to 3.39% in 2005  compared  with
3.45% in 2004. The decrease in net interest  margin  reflected a flattened yield
curve, the reduction in the difference between short-term and long-term interest
rates, and asset spread compression.

 7


Table 2  Volume/Rate Analysis
            (In Thousands)

                                                            2005/2004                                2004/2003
                                               -------------------------------------    -------------------------------------
                                                                Change Due To(1)                          Change Due To(1)
                                                            ------------------------                -------------------------
                                                 Change       Volume    Yield/Rate        Change      Volume     Yield/Rate
                                               ------------------------------------------------------------------------------
Tax-equivalent interest revenue:
                                                                                                   
  Securities                                    $  7,983    $   5,232    $  2,751        $ 16,448   $  16,607        $(159)
  Trading securities                                 141           (6)        147             (65)        (38)         (27)
  Loans                                          146,735       50,282      96,453          32,525      28,878        3,647
  Funds sold and resell agreements                   934          475         459              72         (91)         163
- -----------------------------------------------------------------------------------------------------------------------------
Total                                            155,793       55,983      99,810          48,980      45,356        3,624
- -----------------------------------------------------------------------------------------------------------------------------
Interest expense:
  Transaction deposits                            37,204        6,936      30,268           4,171       2,305        1,866
  Savings deposits                                   131          (64)        195              31         (19)          50
  Time deposits                                   28,632       10,101      18,531           8,302       4,288        4,014
  Funds purchased and repurchase agreements       40,466        7,301      33,165           5,550         868        4,682
  Other borrowings                                16,513         (285)     16,798           1,025        (743)       1,768
  Subordinated debentures                          6,606        4,659       1,947          (1,716)       (110)      (1,606)
- -----------------------------------------------------------------------------------------------------------------------------
Total                                            129,552       28,648     100,904          17,363       6,589       10,774
- -----------------------------------------------------------------------------------------------------------------------------
Tax-equivalent net interest revenue               26,241      $27,335    $(1,094)          31,617     $38,767      $(7,150)
                                                            -----------------------                 -------------------------
Decrease in tax-equivalent adjustment               (143)                                     131
- ----------------------------------------------------------                             -----------
Net interest revenue                           $  26,098                                $  31,748
- ----------------------------------------------------------                             -----------



                                                                                4th Qtr 2005/4th Qtr 2004
                                                                           ------------------------------------
                                                                                           Change Due To(1)
                                                                                       ------------------------
                                                                             Change      Volume     Yield/Rate
                                                                           ------------------------------------
Tax-equivalent interest revenue:
                                                                                           
  Securities                                                                $ 3,270    $    992     $  2,278
  Trading securities                                                            136         116           20
  Loans                                                                      47,095      18,137       28,958
  Funds sold and resell agreements                                              411         198          213
- ---------------------------------------------------------------------------------------------------------------
Total                                                                        50,912      19,443       31,469
- ---------------------------------------------------------------------------------------------------------------
Interest expense:
  Transaction deposits                                                       13,296       3,847        9,449
  Savings deposits                                                               61         (10)          71
  Time deposits                                                              10,497       4,920        5,577
  Funds purchased and repurchase agreements                                   9,517         504        9,013
  Other borrowings                                                            5,104         365        4,739
  Subordinated debentures                                                     2,754       2,044          710
- ---------------------------------------------------------------------------------------------------------------
Total                                                                        41,229      11,670       29,559
- ---------------------------------------------------------------------------------------------------------------
Tax-equivalent net interest revenue                                           9,683    $  7,773      $ 1,910
                                                                                       ------------------------
Increase in tax-equivalent adjustment                                           241
- -------------------------------------------------------------------------------------
Net interest revenue                                                       $  9,924
- -------------------------------------------------------------------------------------


(1) Changes attributable to both volume and yield/rate are allocated to both
    volume and yield/rate on an equal basis.

 8

Management  regularly  models the  effects of changes in  interest  rates on net
interest  revenue.  Based on this  modeling,  we expect the effect of changes in
interest  rates  on  the  Company's  earnings  to be  neutral  over  a  one-year
forward-looking   period.   However,  other  factors  may  affect  this  general
expectation.  For example,  throughout  2005 the spread between rates charged on
loans and related funding  sources  narrowed due to competitive  pressures.  The
result was that the loan  portfolio's  yield increased less than the increase in
market interest rates.  Additionally,  we have a large portion of our securities
portfolio in mortgage-backed  securities.  These securities reprice as cash flow
received is reinvested at current market rates. The resulting change in yield of
the securities  portfolio  occurs more slowly than changes in market rates.  The
tax-equivalent  yield on the securities  portfolio increased 6 basis points over
2004.

Our overall objective is to manage the Company's balance sheet to be essentially
neutral to changes in interest rates.  Approximately  71% of our commercial loan
portfolio is either  variable  rate or fixed rate that will  reprice  within one
year.  These  loans are funded  primarily  by deposit  accounts  that are either
non-interest  bearing, or that reprice more slowly than the loans. The result is
a balance  sheet that is asset  sensitive,  which  means that  assets  generally
reprice more  quickly  than  liabilities.  Among the  strategies  that we use to
achieve  a  rate-neutral  position,  we  purchase  fixed  rate,  mortgage-backed
securities and fund them with short-term  borrowings.  The average life of these
securities  is  expected  to be  approximately  3.4  years  based  on a range of
interest rate and prepayment  assumptions.  The funds borrowed to purchase these
securities generally reprice within 90 days. The  liability-sensitive  nature of
this strategy provides an offset to the  asset-sensitive  characteristics of our
loan portfolio.

We also use derivative  instruments  to manage our interest rate risk.  Interest
rate swaps with a combined  notional  amount of $684 million  convert fixed rate
liabilities to floating rate based on LIBOR.  The purpose of these  derivatives,
which  generally  have been  designated as fair value  hedges,  is to reduce the
asset-sensitive nature of the balance sheet. Interest rate swaps with a notional
amount of $100 million convert  prime-based  loans to fixed rate. The purpose of
these  derivatives,  which have been designated as cash flow hedges,  also is to
reduce the asset-sensitive nature of our balance sheet.

The  effectiveness of these strategies is reflected in the overall change in net
interest revenue due to changes in interest rates as shown in Table 2 and in the
interest  rate  sensitivity  projections  as shown in the Market Risk section of
this report.

FOURTH QUARTER 2005 NET INTEREST REVENUE

Tax-equivalent  net  interest  revenue  for the fourth  quarter of 2005  totaled
$117.8  million  compared  with $108.1  million for the fourth  quarter of 2004.
Average earning assets  increased $1.3 billion or 10%,  including a $1.1 billion
increase in average  loans  outstanding.  Growth in average  earning  assets was
funded by a $1.8 billion increase in interest-bearing  liabilities,  including a
$1.5  billion  increase in average  interest-bearing  deposits.  The increase in
interest-bearing  liabilities also funded a decrease in average demand deposits.
Net interest  margin was 3.34%,  down 4 basis points from the fourth  quarter of
2004 due to changes in the funding mix and spread compression.

Net interest margin for the fourth quarter of 2005 was reduced 3 basis points by
$299  million of average  margin  assets  carried in support of our  derivatives
business. We were required to place margin collateral with counterparties as the
fair  value of our  derivative  liabilities  increased  due to  volatile  energy
prices.  Fees earned on these margin  assets,  which totaled $3.4  million,  are
included in non-interest  revenue while the related cost of funds is included in
interest expense.  Margin assets averaged $126 million for the fourth quarter of
2004. Fees earned on these assets totaled $756 thousand.

2004 NET INTEREST REVENUE

Tax-equivalent net interest revenue for 2004 was $428.3 million, a $31.6 million
or 8% increase from 2003.  Average earning assets  increased $885 million or 8%,
including a $542  million  increase in average  outstanding  loans.  As shown in
Table 2, net interest revenue  increased $38.8 million due to changes in earning
assets and  interest-bearing  liabilities.  Net interest  revenue  growth due to
earning assets was partially offset by a $7.2 million decrease due to changes in
interest  yields and rates.  Changes in  interest  rates and yields  include the
narrowing of spreads due to competitive pressures and other market conditions.

 9

OTHER OPERATING REVENUE

Other  operating  revenue  increased  $38.1 million  compared with last year due
primarily to a $33.0  million  increase in fees and  commission  revenue.  Other
operating  revenue for 2005 also  included $7.1 million of gains on asset sales.
Diversified sources of fees and commission revenue are a significant part of our
business  strategy and  represented  43% of total revenue,  excluding  gains and
losses on asset sales, securities and derivatives.  We believe that a variety of
fee revenue sources  provide an offset to changes in interest  rates,  values in
the equity markets,  commodity prices and consumer spending, all of which can be
volatile. We expect continued growth in other operating revenue through offering
new products and services and by expanding into new markets. However,  increased
competition  and  saturation  in our existing  markets  could affect the rate of
future increases.



Table 3     Other Operating Revenue
            (In Thousands)

                                                                                 Years ended December 31,
                                                            -------------------------------------------------------------
                                                                2005          2004        2003        2002        2001
                                                            -------------------------------------------------------------
                                                                                               
Brokerage and trading revenue                               $   44,222    $   41,107    $ 41,152   $ 26,290    $ 19,974
Transaction card revenue                                        72,036        64,816      57,352     52,213      44,231
Trust fees and commissions                                      65,187        57,532      45,763     40,092      40,567
Service charges and fees on deposit accounts                    98,361        93,712      82,042     67,632      51,284
Mortgage banking revenue                                        30,681        28,189      52,336     48,910      50,155
Other revenue                                                   35,114        27,209      27,573     22,424      23,252
- -------------------------------------------------------------------------------------------------------------------------
    Total fees and commissions                                 345,601       312,565     306,218    257,561     229,463
- -------------------------------------------------------------------------------------------------------------------------
Gain on sales of assets                                          7,061           887         822      1,157         557
Gain (loss) on securities, net                                  (6,895)       (3,088)      7,188     58,704      30,640
Gain (loss) on derivatives, net                                  1,179        (1,474)     (9,375)     5,236      (3,812)
- -------------------------------------------------------------------------------------------------------------------------
    Total other operating revenue                           $  346,946    $  308,890    $304,853   $322,658    $256,848
- -------------------------------------------------------------------------------------------------------------------------



FEES AND COMMISSIONS REVENUE

Trust  fees  increased  $7.7  million  or  13%.  The  fair  value  of all  trust
relationships  overseen  by the  Company,  which is the basis for a  significant
portion of trust fees,  increased to $28.5 billion at December 31, 2005 compared
with $24.6  billion at December  31, 2004.  Approximately  31% of trust fees are
earned on  personal  trust  relationships.  Additionally,  21% of trust fees are
earned by providing  employee  benefit plan services and 20% are based on mutual
fund activities.

Transaction card revenue  increased $7.2 million or 11%.  Merchant discount fees
and check card revenue increased 11% and 32%, respectively.  Revenue growth from
each of these  activities  was due to growth  in  transaction  volume.  Merchant
locations  serviced increased by 485 or 7%, including 179 new merchant locations
in Arizona and Colorado.  The number of check card transactions processed during
2005  increased  17%  over  2004.  ATM fees  grew at 3%  compared  to  2004.  As
previously disclosed, the growth rate in ATM fees was expected to slow for 2005.
One of our customers was purchased by another financial institution in 2004.

Service charges on deposit  accounts  increased $4.6 million or 5% compared with
2004. Overdraft fees increased 16% to $62.7 million while account service charge
revenue decreased 12% to $28.6 million.  The volume of overdraft items processed
increased in 2005. Additionally,  the per item overdraft charge was increased in
the second quarter of 2005. The decrease in service charge revenue  reflected an
increase in the earnings credit available to commercial deposit  customers.  The
earnings  credit,  which provides a non-cash method for commercial  customers to
avoid  incurring  charges for deposit  services,  increases  when interest rates
rise.

Brokerage  and  trading  revenue  grew $3.1  million or 8%  compared  with 2004.
Revenue from customer hedging activities increased $2.4 million,  including $2.1
million from energy hedging activities.  Volatility in the energy markets during
2005  prompted  our energy  customers to more  actively  hedge their gas and oil
production.  Retail brokerage  revenue  increased $742 thousand or 6% over 2004.
Securities trading revenue was $23.5 million, unchanged from the previous year.

Volatility in the energy markets  increased the fair value of derivative  assets
and liabilities and required the Company to pledge margin

 10

assets to secure obligations. Fees earned on margin assets, which are recognized
in other revenue,  totaled $7.1 million in 2005,  compared with $686 thousand in
2004.

GAINS ON SALES OF ASSETS

The  Company  recognized  net  gains on asset  sales  of $7.1  million  in 2005,
including  $4.8 million from the sale of its interest in an Oklahoma City office
building and $1.2 million from the sale of loans from the community  development
mortgage  loan  portfolio.  In addition to a cash  premium  received on the loan
sale, we retained both the right to service the loans and a recourse  obligation
to the purchaser for borrower defaults.  A servicing asset of $1.6 million and a
recourse  liability of $888 thousand were  recognized in  conjunction  with this
sale.

SECURITIES AND DERIVATIVES

Aggregate net losses on securities and derivatives  totaled $5.7 million in 2005
and $4.6 million in 2004. Net losses on securities totaled $6.9 million in 2005,
consisting  of losses of $5.2 million on securities  held as economic  hedges of
mortgage  servicing rights and $1.7 million on other  securities.  Net losses on
securities   held   as   an   economic   hedge   included   $420   thousand   of
other-than-temporary  impairment  at December 31,  2005.  The  Company's  use of
securities  as an  economic  hedge of  mortgage  servicing  rights is more fully
discussed  in the Line of Business - Mortgage  Banking  section of this  report.
Other  securities  are bought and sold as necessary to maximize the  portfolio's
total return and to manage prepayment or extension risk.

Net gains on  derivatives  totaled $1.2 million in 2005,  including net gains of
$1.1 million from fair value  adjustments of derivatives used to manage interest
rate risk and related hedge liabilities.  Additionally, net gains on derivatives
included  $108  thousand of gains  realized on  derivatives  used as an economic
hedge of mortgage  servicing rights.  The Company's use of derivatives to manage
interest rate risk is more fully  discussed in the Deposits and  Borrowings  and
Capital sections of this report.

FOURTH QUARTER 2005 OTHER OPERATING REVENUE

Other operating revenue for the fourth quarter of 2005 totaled $87.3 million, an
$8.6 million or 11% increase from 2004. Fees and commissions  revenue  increased
$11.1  million  or  14%.  All  business  lines  contributed  to  this  increase.
Transaction  card revenue,  deposit fees and trust fees  increased $2.4 million,
$1.9 million and $1.7 million,  respectively.  Other operating  revenue included
$3.4 million of fees earned on margin assets.

2004 OTHER OPERATING REVENUE

Other  operating  revenue  totaled $308.9 million for 2004, up $4.0 million from
2003. Fees and commissions  revenue  increased $6.3 million or 2%. Strong growth
in trust fees, transaction card revenue and deposit fees was partially offset by
lower mortgage banking revenue. Mortgage banking revenue decreased $24.1 million
due primarily to reduced loan refinancing activity.

Net losses on securities totaled $3.1 million,  including losses of $4.9 million
on securities held as economic hedges of mortgage  servicing rights and gains of
$1.8 million on sales of other securities.

During 2004,  the Company  recognized  net losses of $1.3 million on derivatives
used to manage  interest  rate risk and $208  thousand  on  derivatives  used as
economic hedges of mortgage servicing rights. The Company designated derivatives
as  fair  value  hedges  of  certain   brokered   certificates  of  deposit  and
subordinated debt in 2004. Net losses recognized included fair value adjustments
for both the derivatives and the hedged liabilities.

OTHER OPERATING EXPENSE

Other  operating  expense for 2005 totaled  $469.1  million,  a 6% increase from
2004.  This increase  resulted  primarily  from  personnel  and data  processing
expenses.  Growth in personnel  expenses was driven largely by employment growth
and an increase  in average  compensation  per  employee.  The  increase in data
processing  expenses  included both  transaction  volume and system  maintenance
costs.

 11


Table 4     Other Operating Expense
            (In Thousands)
                                                                             Years ended December 31,
                                                       ---------------------------------------------------------------------
                                                            2005          2004           2003         2002          2001
                                                       ------------- -------------- ------------- ------------ -------------
                                                                                                  
Personnel expense                                        $258,971      $240,661       $222,922      $ 187,439    $166,864
Business promotion                                         17,964        15,618         12,937         11,367      10,658
Contribution of stock to BOK Charitable Foundation              -         5,561              -              -           -
Professional fees and services                             16,596        15,487         17,935         12,987      13,391
Net occupancy and equipment                                50,195        47,289         45,967         42,347      42,764
Data processing and communications                         67,026        60,025         53,398         45,912      39,763
Printing, postage and supplies                             15,066        14,034         13,930         12,665      12,329
Net (gain) loss and operating expenses on
   repossessed assets                                         572        (4,016)           271          1,014       1,401
Amortization of intangible assets                           6,943         8,138          8,101          7,638      20,113
Mortgage banking costs                                     14,562        18,167         40,296         42,271      30,261
Provision (recovery) for impairment of
   mortgage servicing rights                               (3,915)       (1,567)       (22,923)        45,923      15,551
Other expense                                              25,126        21,827         20,604         19,991      18,968
- ------------------------------------------------------ ------------- -------------- ------------- ------------ -------------
     Total                                               $469,106      $441,224       $413,438      $ 429,554    $372,063
- ------------------------------------------------------ ------------- -------------- ------------- ------------ -------------



PERSONNEL EXPENSE

Personnel  expense  increased  $18.3  million or 8% to $259.0  million.  Regular
compensation  expense  totaled $162.7  million,  a $16.0 million or 11% increase
over 2004. The increase in regular compensation expense was due to a 6% increase
in average  regular  compensation  per  full-time  equivalent  employee and a 5%
increase in average staffing.

Incentive  compensation,  which includes both cash-based and stock-based  plans,
decreased  $4.6  million or 8% to $49.8  million.  The Company  offers  numerous
incentive  compensation  plans  that  are  aligned  with  the  Company's  growth
strategy.  Cash  settlements  paid  under  these  plans may be based on  defined
formulas, other performance criteria or discretionary. Incentive compensation is
designed to motivate and reinforce sales and customer service behavior in all of
our markets. Variations of the plans are used in targeted geographic markets and
lines  of  business  where  exceptional   growth  potential  is  expected.   The
effectiveness of all plans and their alignment with the Company's objectives are
reviewed annually with executive  management.  Incentive  compensation  expenses
related to these cash-based plans increased $2.0 million or 5%.

Stock-based  compensation  expense  decreased $6.6 million or 56%. The Company's
stock-based  compensation plans include both equity awards and liability awards.
Compensation  expense  associated  with  liability  award plans  decreased  $8.4
million. This decrease reflected a decrease in the market value of BOK Financial
common  stock at December  31, 2005  compared  with  December  31,  2004,  and a
reduction  in the  number of  executive  officers  of the  Company  eligible  to
participate  in  liability  award  plans.   Additional   information  about  our
stock-based  compensation  plans  is  provided  in Note  13 to the  Consolidated
Financial Statements.

Employee  benefit  expenses  increased  $5.8  million  or 15% to $43.6  million.
Employee  insurance  costs increased $2.6 million or 20% due primarily to growth
in medical  claims.  The Company  self-insures a portion of its employee  health
care coverage.  Retirement  benefit costs, which include both thrift and pension
plan expenses, increased $1.7 million or 16%.

During the fourth quarter of 2005, our Board of Directors approved modifications
to both the thrift and pension plans. These  modifications will become effective
April 1, 2006.  The  purpose  of these  modifications  is to provide  retirement
benefits that align with the Company's strategy of rewarding long-term, superior
performance, that are easily understood and that increase employee ownership and
control over their retirement. These modifications consist primarily of enhanced
Company  contributions to the thrift plans and curtailed benefit accruals to the
pension  plan.  A  charge  of $384  thousand  was  recognized  in  2005  for the
curtailment of the pension plan. The combined effects of these modifications are
not expected to have a significant impact on future earnings or liquidity.

The Company will  continue to have a funding  obligation to the pension plan and
will  continue to recognize  pension  expense  based on plan asset  performance,
discount rates and other factors.  At December 31, 2005, prepaid pension expense
totaled $21.9  million,  consisting of $1.3 million of net plan assets in excess
of liabilities and $20.6 million of unrecognized  actuarial losses. These losses
will be recognized in future

 12

years based on the lesser of the average  remaining service periods or 10 years.
These  unrecognized  losses  may also be  increased  or  reduced  by plan  asset
performance and discount rate changes.

DATA PROCESSING AND COMMUNICATIONS EXPENSE

Data  processing  and  communication  expenses  increased  $7.0  million  or 12%
compared to 2004. This expense consists of two broad categories, data processing
systems and transaction card processing. Data processing systems costs increased
$3.5 million or 10% due primarily to increased  maintenance  and  communications
costs.  Transaction  card processing  costs increased $3.5 million or 15% due to
growth in processing volumes.  The number of transactions  processed during 2005
increased 17% over 2004.

OTHER OPERATING EXPENSES

Business  promotion  expense  increased  $2.3 million or 15% compared  with last
year.   Promotional  activities  in  support  of  consumer  banking  initiatives
accounted for $1.5 million of the increase.

Mortgage  banking  expenses,  including  provision  for  impairment  of mortgage
servicing  rights,  decreased  $6.0 million.  These  expenses are discussed more
fully in the Line of Business - Mortgage Banking section of this report.

FOURTH QUARTER 2005 OPERATING EXPENSES

Operating expenses for the fourth quarter of 2005 totaled $123.9 million, up 11%
over the same period in 2004.  Personnel  costs  increased  $6.5 million or 11%.
Regular  compensation expense increased $4.7 million or 12% due to a 5% increase
in average  compensation  per  employee  and a 7%  increase  in  staffing.  Data
processing and  communication  expense grew $2.9 million or 19% due to increases
of $1.5 million in data  processing  costs and $1.4 million in transaction  card
processing costs. Both increases reflect growth in processing volumes.

2004 OPERATING EXPENSES

Operating  expenses for 2004 totaled  $441.2  million,  a 7% increase from 2003.
This increase  resulted  primarily  from  personnel and data  processing  costs.
Growth in personnel costs were driven largely by the Colorado State Bank & Trust
acquisition and stock-based  compensation costs. The increase in data processing
costs included both transaction volume and system maintenance costs.

Personnel costs increased  $17.7 million or 8%. Regular  compensation  increased
$8.0  million  or  6%  due  primarily  to  a  5%  increase  in  average  regular
compensation per employee and a 1% increase in average  staffing.  Additionally,
incentive compensation increased $8.6 million, including a $5.9 million increase
in  stock-based  compensation.  Much of this  expense is related to  stock-based
compensation  that is recognized as liability awards.  Compensation  expense for
these  awards is based on the excess of the fair value of BOK  Financial  common
stock over a set exercise price.

Data  processing  and  communication  expenses  increased  $6.6  million or 12%.
Transaction  card  processing  costs  increased  $4.6  million  or  25%  due  to
processing  volumes.  Data processing systems costs increased $2.0 million or 6%
due primarily to maintenance costs.

BOK  Financial  contributed   appreciated   securities  to  the  BOk  Charitable
Foundation  during 2004.  The  Foundation  supports  communities  in the markets
served by the Company.  The cost basis in these  securities  of $5.6 million was
charged to operating expense. The after-tax cost of these contributions  reduced
net income by $1.1 million, or 2 cents per diluted share.

Business  promotion  expense  increased  $2.7 million or 21% compared  with last
year.   Promotional  activities  in  support  of  consumer  banking  initiatives
accounted  for $1.5 million of the increase.  Much of the growth in  promotional
expenses  was targeted at demand  deposit  growth  through our consumer  banking
network.

Net gains from the sale of  repossessed  assets  totaled $4.0 million  including
$3.8  million  from the sale of stock  acquired  several  years  ago as  partial
proceeds of the sale of a troubled loan.

INCOME TAXES

Income tax expense was $113.2 million for 2005, $91.4 million for 2004 and $88.9
million for 2003.  This  represented  36%,  34% and 36%,  respectively,  of book
taxable  income.  Tax expense  currently  payable totaled $112.7 million in 2005
compared with $91.3 million in 2004 and $82.6 million in 2003.

Income tax  expense for 2004 was  reduced by $3.0  million due to the  favorable
resolution of state income tax issues and by $2.4 million from the  contribution
of appreciated  securities to the BOk  Charitable  Foundation.  Excluding  these
items,  income tax expense  would have been $96.9 million or 36% of book taxable
income.

 13


Table 5  Selected Quarterly Financial Data
            (In Thousands Except Per Share Data)

                                                                              Fourth       Third       Second        First
                                                                           ---------------------------------------------------
                                                                                                  2005
                                                                           ---------------------------------------------------
                                                                                                       
Interest revenue                                                            $214,240     $199,056     $186,334     $170,304
Interest expense                                                              97,854       86,228       73,801       62,710
- ------------------------------------------------------------------------------------------------------------------------------
Net interest revenue                                                         116,386      112,828      112,533      107,594
Provision for credit losses                                                    4,450        3,976        2,015        2,000
- ------------------------------------------------------------------------------------------------------------------------------
Net interest revenue after provision for credit losses                       111,936      108,852      110,518      105,594
Other operating revenue                                                       89,018       90,993       92,636       80,015
Gain (loss) on securities, net                                                (1,780)      (4,744)       2,266       (2,637)
Gain (loss) on derivatives, net                                                  106          606         (311)         778
Other operating expense                                                      124,611      121,705      118,922      107,783
Provision (recovery) for impairment of mortgage
   servicing rights                                                             (708)      (4,671)       7,088       (5,624)
- ------------------------------------------------------------------------------------------------------------------------------
Income before taxes                                                           75,377       78,673       79,099       81,591
Income tax expense                                                            27,219       27,846       28,634       29,536
- ------------------------------------------------------------------------------------------------------------------------------
  Net income                                                                $ 48,158      $50,827     $ 50,465     $ 52,055
- ------------------------------------------------------------------------------------------------------------------------------

Earnings per share:
   Basic                                                                    $   0.72       $ 0.77       $ 0.79     $   0.87
- ------------------------------------------------------------------------------------------------------------------------------
   Diluted                                                                  $   0.72       $ 0.76       $ 0.75     $   0.78
- ------------------------------------------------------------------------------------------------------------------------------

Average shares:
   Basic                                                                      66,527       66,427       63,779       59,433
- ------------------------------------------------------------------------------------------------------------------------------
   Diluted                                                                    67,147       67,106       66,986       66,947
- ------------------------------------------------------------------------------------------------------------------------------



                                                                                                  2004
                                                                           ---------------------------------------------------
                                                                                                       
Interest revenue                                                            $163,087     $157,027     $147,833     $146,337
Interest expense                                                              56,625       48,642       42,644       43,130
- ------------------------------------------------------------------------------------------------------------------------------
Net interest revenue                                                         106,462      108,385      105,189      103,207
Provision for credit losses                                                    4,439        4,986        3,987        7,027
- ------------------------------------------------------------------------------------------------------------------------------
Net interest revenue after provision for credit losses                       102,023      103,399      101,202       96,180
Other operating revenue                                                       77,921       78,919       80,074       76,538
Gain (loss) on securities, net                                                   967        2,673      (11,005)       4,277
Gain (loss) on derivatives, net                                                 (174)        (506)         201         (995)
Other operating expense                                                      111,887      108,302      109,857      112,745
Provision (recovery) for impairment of mortgage
   servicing rights                                                             (305)       5,900      (10,865)       3,703
- ------------------------------------------------------------------------------------------------------------------------------
Income before taxes                                                           69,155       70,283       71,480       59,552
Income tax expense                                                            22,599       22,501       25,947       20,400
- ------------------------------------------------------------------------------------------------------------------------------
  Net income                                                                $ 46,556      $47,782     $ 45,533     $ 39,152
- ------------------------------------------------------------------------------------------------------------------------------

Earnings per share:
   Basic                                                                    $   0.78      $  0.79     $   0.76     $   0.66
- ------------------------------------------------------------------------------------------------------------------------------
   Diluted                                                                  $   0.70      $  0.72     $   0.68     $   0.59
- ------------------------------------------------------------------------------------------------------------------------------

Average shares:
   Basic                                                                      59,251       59,198       59,147       59,051
- ------------------------------------------------------------------------------------------------------------------------------
   Diluted                                                                    66,895       66,803       66,720       66,672
- ------------------------------------------------------------------------------------------------------------------------------


 14

LINES OF BUSINESS

BOK Financial  operates five  principal  lines of business:  Oklahoma  corporate
banking,  Oklahoma  consumer banking,  mortgage  banking,  wealth management and
regional  banking.  Mortgage  banking  activities  include loan  origination and
servicing across all markets served by the Company.  Wealth management  provides
brokerage  and  trading,  private  financial  services and  investment  advisory
services in all  markets.  It also  provides  fiduciary  services in all markets
except  Colorado.  Fiduciary  services  in  Colorado  are  included  in regional
banking.  Regional banking consists  primarily of corporate and consumer banking
activities  in the  respective  local  markets.  In  addition  to its  lines  of
business, BOK Financial has a funds management unit. The primary purpose of this
unit is to manage the  overall  liquidity  needs and  interest  rate risk of the
Company.  Each line of business  borrows  funds from and  provides  funds to the
funds management unit as needed to support their operations.

BOK Financial  allocates  resources and  evaluates  performance  of its lines of
business after allocation of funds, certain indirect expenses, taxes and capital
costs.  The  cost of  funds  borrowed  from  the  funds  management  unit by the
operating lines of business is transfer priced at rates that approximate  market
for funds with similar  duration.  Market is generally  based on the  applicable
LIBOR or interest rate swap rates,  adjusted for prepayment risk. This method of
transfer-pricing  funds that support  assets of the operating  lines of business
tends to insulate them from interest rate risk.

The value of funds  provided  by the  operating  lines of  business to the funds
management  unit is based on  applicable  Federal Home Loan Bank advance  rates.
Deposit accounts with indeterminate maturities,  such as demand deposit accounts
and  interest-bearing  transaction  accounts,  are  transfer-priced at a rolling
average based on expected duration of the accounts. The expected duration ranges
from 90 days for certain rate-sensitive deposits to five years.

Economic capital is assigned to the business units by a capital allocation model
that reflects management's  assessment of risk. This model assigns capital based
upon credit,  operating,  interest rate and market risk inherent in our business
lines and recognizes the diversification  benefits among the units. The level of
assigned  economic  capital is a combination  of the risk taken by each business
line, based on its actual exposures and calibrated to its own loss history where
possible.  Additional  capital  is  assigned  to the  regional  banking  line of
business based on our investment in those entities.

As shown in Table 6, regional banking  continued to increase its contribution to
consolidated  net  income.  The  growth  of  the  regional  banking  segment  is
consistent  with our corporate  strategy of expansion  into high growth  markets
outside of Oklahoma.  The  Oklahoma  consumer  banking  unit's  contribution  to
consolidated  earnings  increased   significantly  in  2005.  Rising  short-term
interest rates increased the internal  transfer pricing credit provided to units
that generate lower-costing funds for the Company.

Table 6     Net Income by Line of Business
           (In Thousands)
                                             Years ended December 31,
                                        2005          2004           2003
                                   -----------------------------------------

Oklahoma corporate banking           $ 73,625      $ 61,956       $ 57,631
Oklahoma consumer banking              24,183        11,854          8,928
Mortgage banking                        2,182         2,681         28,401
Wealth management                      17,890        13,587         14,517
Regional banking                       77,344        57,706         41,673
- ----------------------------------------------------------------------------
     Subtotal                         195,224       147,784        151,150
Funds management and all other          6,281        31,239          7,210
- ----------------------------------------------------------------------------
     Total                           $201,505      $179,023       $158,360
- ----------------------------------------------------------------------------

OKLAHOMA CORPORATE BANKING

The Oklahoma  Corporate  Banking Division  provides loan and lease financing and
treasury and cash  management  services to  businesses  throughout  Oklahoma and
certain  relationships in surrounding states. In addition to serving the banking
needs of small businesses, middle market and larger customers, this division has
specialized groups that serve customers in the energy,  agriculture,  healthcare
and banking/finance  industries,  and includes  TransFund,  our electronic funds
transfer  network.  The Oklahoma  Corporate  Banking Division  contributed $73.6
million or 37% to consolidated net income for 2005,  including an after-tax gain
of $2.9  million  from the sale of the  Company's  interest in an Oklahoma  City
office  building.  This  compares to $62.0  million or 35% of  consolidated  net
income for 2004. Net interest revenue increased $7.4 million or 6% due primarily
to asset  growth.  Average  assets  attributed to this  division,  which consist
primarily of commercial loans, increased $249 million or 6% over 2004. Operating
revenue grew $6.2 million or 7%. TransFund provided $3.1 million of the increase
in operating revenue.  Operating expenses,  which consist primarily of personnel
and data processing  costs,  increased 4%. Growth in net income also reflected a
$4.2 million decrease in net loan charge-offs.

 15


Table 7   Oklahoma Corporate Banking
           (Dollars in Thousands)

                                   Years ended December 31,
                           ----------------------------------------
                                 2005         2004         2003
                           ----------------------------------------
   NIR (expense) from
     external sources        $ 191,040    $ 148,919   $  140,818
   NIR (expense) from
     internal sources          (60,735)     (26,049)     (25,924)
                           ----------------------------------------
   Total net interest
     revenue                   130,305      122,870      114,894
   Other operating
     revenue                    92,707       86,493       77,332
   Gain on sale of assets        4,758            -            -
   Operating expense           102,513       99,007       87,585
   Net loans charged off         4,757        8,956       10,318
   Net income                $  73,625    $  61,956   $   57,631

   Average assets           $4,629,400   $4,380,491   $4,106,441
   Average economic capital    322,440      312,530      311,140

   Return on assets               1.59%        1.41%        1.40%
   Return on economic capital    22.83        19.82        18.52
   Efficiency ratio              45.01        47.29        45.56


OKLAHOMA CONSUMER BANKING

The Oklahoma Consumer Banking Division provides a full line of deposit, loan and
fee-based  services  to  customers   throughout   Oklahoma  through  four  major
distribution channels:  traditional branches,  supermarket branches, the 24-hour
ExpressBank  call  center and the  Internet.  Additionally,  the  division  is a
significant  referral  source for the Bank of Oklahoma  Mortgage  Division ("BOk
Mortgage") and BOSC's retail brokerage division. This division contributed $24.2
million  or 12% to  consolidated  net income for 2005.  This  compares  to $11.9
million or 7% of  consolidated  net income for 2004.  Net interest  revenue grew
$16.5  million or 36%  compared  with 2004 due  primarily  to an increase in the
internal transfer pricing credit. Additionally, average deposits provided by the
Oklahoma  Consumer  Banking  Division  grew $158 million or 6%. Other  operating
revenue growth from 2004 resulted  largely from check card revenue and overdraft
fees.

During  2005,  growth  initiatives  focused on building  customer  relationships
through sales  promotions,  Perfect Banking sales and service standards and free
on-line BillPay services. These initiatives resulted in a 6% increase in average
consumer deposits, a 10% increase in checking accounts and a 54% increase in the
number of on-line BillPay users.  Oklahoma  Consumer Banking Division also added
one new supermarket location.

Table 8    Oklahoma Consumer Banking
           (Dollars in Thousands)

                                     Years ended December 31,
                             -----------------------------------------
                                2005          2004          2003
                             -----------------------------------------
  NIR (expense) from
     external sources         $ (25,140)   $ (19,061)     $(17,188)
  NIR (expense) from
     internal sources            87,421       64,873        58,261
                             -----------------------------------------
  Total net interest
     revenue                     62,281       45,812        41,073
  Other operating
     revenue                     66,266       56,611        47,229
  Operating expense              84,336       76,057        66,798
  Net loans charged off           4,632        6,964         6,892
  Net income                    $24,183      $11,854        $8,928

  Average assets             $2,988,218   $2,746,279    $2,525,060
  Average economic capital       69,810       64,390        58,000

  Return on assets                 0.81%        0.43%         0.35%
  Return on economic capital      34.64        18.41         15.39
  Efficiency ratio                65.61        74.26         75.65


MORTGAGE BANKING

BOK Financial  engages in mortgage banking  activities  through the BOk Mortgage
Division  of  Bank  of  Oklahoma.  These  activities  include  the  origination,
marketing and servicing of conventional and government-sponsored mortgage loans.
Mortgage banking activities  contributed $2.2 million to consolidated net income
in 2005  compared to $2.7  million in 2004.  Net income for 2005  included  $753
thousand  from  the  sale  of  mortgage  loans  from  the  Company's   community
development loan portfolio.

Mortgage  banking  activities  consist of two sectors,  loan production and loan
servicing.  The loan  production  sector  generally  performs best when mortgage
rates are relatively low and loan origination volumes are high. Conversely,  the
loan servicing sector generally performs best when mortgage rates are relatively
high and prepayments are low.

 16

Table 9    Mortgage Banking
           (Dollars in Thousands)

                                    Years ended December 31,
                           -------------------------------------------
                                2005         2004           2003
                           -------------------------------------------
  NIR (expense) from
    external sources         $ 20,392     $ 21,647       $ 27,770
  NIR (expense) from
    internal sources          (14,979)     (11,423)        (9,415)
                           -------------------------------------------
  Total net interest
    revenue                     5,413       10,224         18,355
  Capitalized mortgage
    servicing rights           17,402       11,365         23,922
  Other operating
    revenue                    16,427       22,055         36,379
  Gain on sale of assets        1,232            -              -
  Operating expense            35,315       35,415         58,204
  Recovery for
    impairment of mortgage
    servicing rights           (3,915)      (1,567)       (22,923)
  Gain (loss) on financial
    instruments, net           (5,087)      (5,068)         4,025
  Net income                 $  2,182     $  2,681       $ 28,401

  Average assets             $526,224     $559,034       $623,823
  Average economic capital     24,210       27,270         34,120

  Return on assets               0.41%        0.48%          4.55%
  Return on economic capital     9.01         9.83          83.24
  Efficiency ratio              87.25        81.15          74.00


LOAN PRODUCTION SECTOR

Loan production  revenue totaled $17.6 million in 2005,  including $17.4 million
of capitalized mortgage servicing rights, compared to loan production revenue of
$20.9 million in 2004, including $11.4 million of capitalized mortgage servicing
rights.  Mortgage  loans funded  totaled $910  million in 2005,  including  $664
million for home purchases and $246 million of refinanced loans.  Mortgage loans
funded in 2004 totaled $893 million,  including  $587 million for home purchases
and $306  million of  refinanced  loans.  Approximately  69% of the loans funded
during 2005 were in Oklahoma.  Growth initiatives for the loan production sector
include a program to hire experienced originators in markets outside of Oklahoma
to boost  production.  Pre-tax income from loan production  totaled $5.6 million
for 2005  compared  with $6.7 million for the previous year end. The pipeline of
mortgage loan applications  totaled $233 million at December 31, 2005,  compared
to $189 million at December 31, 2004.

LOAN SERVICING SECTOR

The loan  servicing  sector had a pre-tax loss of $3.2 million for 2005 compared
to a pre-tax loss of $4.3 million for the same period of 2004. Operating results
of the loan  servicing  sector are greatly  affected by the effect of changes in
interest rates on prepayment speeds and the value of mortgage  servicing rights.
Mortgage  interest rates changed  little during 2005. In this rate  environment,
the fair  value of our  mortgage  servicing  rights  appreciated  modestly.  The
resulting  recovery of provision for mortgage  servicing rights was $3.9 million
in 2005, compared with a provision recovery of $1.6 million in 2004.

Servicing  revenue  totaled  $16.3  million in 2005 compared to $17.8 million in
2004. The decrease in servicing revenue was due primarily to a lower outstanding
principal balance of loans serviced.  The average  outstanding  balance of loans
serviced for others was $3.6 billion during 2005 compared to $3.9 billion during
2004. The decrease in loans serviced reflected our decision to curtail purchases
of mortgage  loan  servicing  outside  our market  area.  Servicing  revenue per
outstanding  loan  principal  was 42 basis points in 2005 compared with 45 basis
points in 2004.  Approximately  80% of loans  serviced was in our primary market
areas at December 31, 2005 and December 31, 2004.

Subsequent to December 31, 2005,  we agreed to purchase a $480 million  mortgage
loan servicing  package for  approximately $7 million.  Substantially all of the
loans are within our primary market area.  This purchase is expected to close by
the end of the first quarter of 2006.

Amortization  of mortgage  servicing  rights,  which is  included  in  operating
expense,  was  $12.9  million  in  2005  compared  to  $15.8  million  in  2004.
Amortization  expense is determined  in proportion to the estimated  future cash
flows that will be generated by the mortgage  servicing rights.  The decrease in
amortization  expense in 2005 reflected an expectation of slower loan prepayment
speeds.

The valuation  allowance for impairment of mortgage  servicing rights totaled $7
million at December  31, 2005  compared  to $14  million at December  31,  2004.
Increased  fair value of our  servicing  rights was the  primary  reason for the
reduction in the valuation  allowance.  The valuation allowance was also reduced
by $2.4  million  from the  charge-off  of  servicing  rights  determined  to be
permanently  impaired.  As discussed in the Critical Accounting Policies section
of this report,  servicing  rights are considered to be permanently  impaired if
the fair value does not exceed  amortized costs after assuming a 300 basis point
increase  in  mortgage  interest  rates.  Note 8 to the  Consolidated  Financial
Statements  presents  additional  information about the fair value and amortized
costs of servicing rights and valuation allowance.

 17

BOK Financial  designates a portion of its  securities  portfolio as an economic
hedge against the risk of loss on its mortgage servicing rights. Mortgage-backed
securities  and U.S.  government  agency  debentures  are  acquired  and held as
available for sale when prepayment  risks exceed certain  levels.  Additionally,
mortgage-related  derivative  contracts  may also be  designated  as an economic
hedge of the risk of loss on mortgage servicing rights.  Because the fair values
of these  instruments  are  expected to vary  inversely to the fair value of the
servicing  rights,  they are expected to  partially  offset  risk.  However,  no
special  hedge  accounting  treatment  is  applicable  to  either  the  mortgage
servicing rights or the financial  instruments  designated as an economic hedge.
Derivative contracts used to hedge mortgage servicing rights are carried at fair
value with changes in fair value  recognized  in  earnings.  We  recognized  net
losses of $1.2  million  in 2005 and $3.5  million  in 2004 from  changes in the
value of mortgage servicing rights and economic hedging activities.

This hedging strategy presents certain risks. A well-developed market determines
the  fair  value  for the  securities  and  derivatives.  However,  there  is no
comparable market for mortgage servicing rights.  Therefore, the computed change
in value of the servicing  rights for a specified  change in interest  rates may
not correlate to the change in value of the securities.

At December 31, 2005, financial instruments with a fair value of $49 million and
an  unrealized  gain of $52 thousand were held for the economic  hedge  program.
This unrealized gain, net of income taxes, is included in  shareholders'  equity
as part of other  comprehensive  income.  The interest rate  sensitivity  of the
mortgage servicing rights and securities held as a hedge is modeled over a range
of +/- 50 basis  points.  At December  31,  2005,  the  pre-tax  results of this
modeling on reported earnings are shown in Table 10:


Table 10   Interest Rate Sensitivity - Mortgage Servicing
           (Dollars in Thousands)
                                          50 bp        50 bp
                                         Increase     Decrease
                                      -------------------------
  Anticipated change in:
    Fair value of mortgage
       servicing rights                  $3,113      $ (4,763)
    Fair value of hedging securities     (1,915)        2,112
  -------------------------------------------------------------
  Net                                    $1,198      $ (2,651)
  -------------------------------------------------------------

Table 10 shows the non-linear effect of changes in mortgage  commitment rates on
the value of mortgage  servicing  rights.  A 50 basis point increase in rates is
expected to increase  value by $3.1 million  while a 50 basis point  decrease is
expected to reduce value by $4.8 million.  This considers that there is an upper
limit to appreciation in the value of servicing  rights as rates rise due to the
contractual  repayment terms of the loans and other factors.  There is much less
of a limit on the speed at which  mortgage  loans may prepay in a declining rate
environment.

WEALTH MANAGEMENT

BOK  Financial  provides a wide range of financial  services  through its wealth
management line of business, including trust and private financial services, and
brokerage and trading activities.  This line of business includes the activities
of BOSC,  Inc.,  a  registered  broker /  dealer.  Trust and  private  financial
services  includes sales of institutional,  investment and retirement  products,
loans and other  services to affluent  individuals,  businesses,  not-for-profit
organizations,  and governmental agencies. Trust services are provided primarily
to  clients  throughout  Oklahoma,  Texas and New  Mexico.  Additionally,  trust
services  include a nationally  competitive,  self-directed  401(k)  program and
administrative  and  advisory  services to the  American  Performance  family of
mutual funds. Brokerage and trading activities within the wealth management line
of business consist of retail sales of mutual funds, securities,  and annuities,
institutional  sales of securities and derivatives,  bond underwriting and other
financial  advisory  services.  Customer hedging programs were combined into the
Wealth Management  Division in 2005. Prior years' results have been reclassified
for consistency.

Wealth Management contributed $17.9 million or 9% to consolidated net income for
2005. This compared to $13.6 million or 8% of consolidated  net income for 2004.
Trust and private  financial  services  provided  $15.6 million of net income in
2005, a $4.9 million or 46% increase over 2004.  The increased  contribution  by
trust and private financial services is attributable primarily to trust fees. At
December  31,  2005  and  2004,  the  wealth  management  line of  business  was
responsible  for trust assets with aggregate  market values of $26.0 billion and
$22.6 billion, respectively, under various fiduciary arrangements. The growth in
trust assets  reflected  increased market value of assets managed in addition to
new  business  generated  during the year.  We have sole or joint  discretionary
authority  over $10.0  billion of trust assets at December 31, 2005  compared to
$8.2 billion of trust assets at December 31, 2004. The fair value of assets held
in custody

 18

by the Wealth Management  Division  increased $1.6 billion or 33% while the fair
value of non-managed assets remained unchanged at $9.4 billion.

Brokerage  and trading  activities  provided  $2.3 million of net income in 2005
compared to $2.9 million in the previous year.  Operating revenue increased $1.5
million or 4% due primarily to customer hedging  programs.  Operating  expenses,
which consisted primarily of compensation expense, increased $2.1 million or 5%.


Table 11   Wealth Management
           (Dollars in Thousands)

                                      Years ended December 31,
                               --------------------------------------
                                    2005         2004         2003
                               --------------------------------------
  NIR (expense) from
    external sources           $    5,651    $    4,001    $   1,966
  NIR (expense) from
    internal sources               11,208         8,888        8,939
                               --------------------------------------
  Total net interest
     revenue                       16,859        12,889       10,905
  Other operating
     revenue                      100,647        93,193       93,757
  Operating expense                88,001        83,784       80,512
  Net income                   $   17,890    $   13,587    $  14,517

  Average assets               $1,503,886    $1,122,147    $ 875,661
  Average economic capital        106,040        84,820       69,690

  Return on assets                   1.19%         1.21%        1.66%
  Return on economic capital        16.87         16.02        20.83
  Efficiency ratio                  74.89         78.98        76.93


REGIONAL BANKING

Regional  banking  consists  primarily of the corporate and  commercial  banking
services  provided  by Bank of Texas,  Bank of  Albuquerque,  Bank of  Arkansas,
Colorado State Bank and Trust and Bank of Arizona in their  respective  markets.
It also includes  fiduciary  services provided by Colorado State Bank and Trust.
Small businesses and middle-market  corporations are the regional banks' primary
customer  focus.   Regional  banking   contributed   $77.3  million  or  38%  to
consolidated  net income during 2005. This compares with $57.7 million or 32% of
consolidated  net income in 2004.  Growth in net income  contributed by regional
banking came primarily from  operations in Texas and New Mexico.  Net income for
2005 in  Texas  and  New  Mexico  increased  $10.6  million  and  $6.0  million,
respectively,  from the previous year.  Net income from our Colorado  operations
grew $2.5 million or 152% over 2004.

Texas growth  resulted  from an increase in net interest  revenue.  Net interest
revenue  increased $21.6 million or 19%.  Average earning assets  increased $274
million,  including  $293  million of loans  partially  offset by a reduction in
securities  and funds sold to the funds  management  unit. The growth in average
earning  assets  was  funded  by a $115  million  increase  in  interest-bearing
deposits and a $77 million increase in demand deposits.  Company  initiatives to
support loan growth included hiring  additional  middle market lending talent in
Houston  and  expanding  the energy  lending  staff in both  Houston and Dallas.
Operating expenses increased $8.6 million or 12% due primarily to a $6.5 million
increase in personnel costs.

Net income  growth from our New Mexico  operations  was also based largely on an
increase  in net  interest  revenue,  combined  with an  increase  in  operating
revenue.  Average loans  increased $62 million  compared with 2004 while average
funds sold to the funds management unit decreased $82 million.  Average deposits
in  the  New  Mexico   market  grew  $74  million,   including  $59  million  of
interest-bearing  deposits and $16 million of demand deposits.  Over 15 thousand
new consumer  checking  accounts were opened during 2005.  Funds provided by the
growth  in  deposits  reduced  average  external  borrowings.  The  increase  in
operating  revenue was due  primarily  to growth in deposit  fees and check card
revenue.

Expansion  efforts in the Colorado  region  continued  during  2005.  Commercial
lending staff was added  throughout the year.  Additionally,  a new office which
offers  trust  products in Salt Lake City,  Utah,  was opened  during the second
quarter. The result of these efforts was net income from our Colorado operations
of $4.1 million,  a 152% increase in its second full year of operations as a BOK
Financial  unit.  Average earning assets  attributed to our Colorado  operations
increased  36% due primarily to loan growth.  Average  deposits  increased  $128
million or 40%.  These  factors  combined to increase net interest  revenue $6.5
million  or 39%.  Other  operating  revenue  increased  $1.6  million or 19% due
primarily  to growth in trust fees.  The fair value of trust  assets  managed by
Colorado  State Bank and Trust was $2.4  billion at  December  31,  2005,  a 20%
increase from December 31, 2004. Net loans charged-off increased to $2.5 million
in 2005 from the resolution of several  commercial  lending  relationships  that
pre-dated our acquisition of Colorado State Bank and Trust.

Bank of Arizona  incurred a net loss of $524 thousand  since its  acquisition in
April,  2005.  Operating  expense included $778 thousand of core deposit premium
amortization  expense.  Our policy is to amortize core deposit premiums over the
expected lives of the acquired

 19

deposits using an accelerated  amortization method. The weighted average life of
the  acquired  deposits is  approximately  five years.  Operating  expense  also
included $380 thousand of recruiting  expenses as we add professional  staff. In
the nine months  since  acquisition,  Bank of Arizona has been  converted to our
data  processing  systems  which  increased  the scope of products  and services
offered in the Phoenix market.  Outstanding  loans increased $70 million or 55%.
We  recently  opened a loan  production  office in Tucson to further  expand our
Arizona operations.


Table 12   Bank of Texas
           (Dollars in Thousands)

                                               Years ended December 31,
                                       ----------------------------------------
                                           2005          2004          2003
                                       ----------------------------------------

NIR (expense) from external sources      $148,021      $120,813     $ 106,617
NIR (expense) from internal sources       (10,809)       (5,206)       (5,068)
                                       ------------- ------------- -------------
Total net interest revenue                137,212       115,607       101,549

Other operating revenue                    24,053        22,406        21,951
Operating expense                          82,189        73,548        78,152
Net loans charged off                       2,727         3,928         4,301
Net income                               $ 49,946      $ 39,388      $ 26,601

Average assets                         $3,417,995    $3,143,625    $2,859,069
Average economic capital                  182,640       168,430       166,870
Average invested capital                  349,720       335,520       333,960

Return on assets                             1.46%         1.25%         0.93%
Return on economic capital                  27.35         23.39         15.94
Return on average invested capital          14.28         11.74          7.97
Efficiency ratio                            50.97         53.29         63.28


Table 13   Bank of Albuquerque
           (Dollars in Thousands)

                                                Years ended December 31,
                                        ---------------------------------------
                                           2005          2004          2003
                                        ---------------------------------------
NIR (expense) from external sources      $ 58,208       $46,888       $42,128
NIR (expense) from internal sources       (10,560)       (5,065)       (4,362)
                                        ------------- ------------- -----------
Total net interest revenue                 47,648        41,823        37,766

Other operating revenue                    17,367        14,701        11,533
Operating expense                          31,195        31,904        30,385
Net loans charged off                         930         1,471         1,326
Net income                               $ 20,096      $ 14,144      $ 10,919

Average assets                         $1,633,310    $1,652,557    $1,551,192
Average economic capital                   76,560        73,270        66,070
Average invested capital                   95,650        92,360        85,160

Return on assets                             1.23%         0.86%         0.70%
Return on economic capital                  26.25         19.30         16.53
Return on average invested capital          21.01         15.31         12.82
Efficiency ratio                            47.98         56.44         61.63


Table 14   Bank of Arkansas
           (Dollars in Thousands)

                                              Years ended December 31,
                                       ---------------------------------------
                                          2005          2004          2003
                                       ---------------------------------------
NIR (expense) from external sources      $12,055       $ 9,046        $8,700
NIR (expense) from internal sources       (3,918)       (2,170)       (2,148)
                                       ------------- ------------- -----------
Total net interest revenue                 8,137         6,876         6,552

Other operating revenue                    2,063         1,394         1,205
Operating expense                          4,018         4,115         3,894
Net loans charged off                         52           (26)          661
Net income                              $  3,745      $  2,555      $  1,957

Average assets                          $268,307      $273,700      $288,030
Average economic capital                  11,900        11,450        10,720
Average invested capital                  11,900        11,450        10,720

Return on assets                            1.40%         0.93%         0.68%
Return on economic capital                 31.47         22.31         18.26
Return on average invested capital         31.47         22.31         18.26
Efficiency ratio                           39.39         49.76         50.20


Table 15   Colorado State Bank and Trust
           (Dollars in Thousands)

                                                   Years ended December 31,
                                           ------------------------------------
                                              2005          2004          2003
                                           ------------------------------------

NIR (expense) from external sources         $ 35,299      $ 24,034         ***
NIR (expense) from internal sources          (12,059)       (7,312)        ***
                                           ------------------------------------
Total net interest revenue                    23,240        16,722         ***

Other operating revenue                       10,136         8,516         ***
Operating expense                             24,179        22,455         ***
Net loans charged off                          2,517           134         ***
Net income                                  $  4,081      $  1,619         ***

Average assets                              $873,805      $684,329         ***
Average economic capital                      47,070        27,560         ***
Average invested capital                      89,050        69,550         ***

Return on assets                                0.47%         0.24%        ***
Return on economic capital                      8.67          5.87         ***
Return on average invested capital              4.58          2.33         ***
Efficiency ratio                               72.44         88.97         ***

*** Data not meaningful due to acquisition of Colorado State Bank and Trust in
September 2003.

 20

Table 16   Bank of Arizona
           (Dollars in Thousands)

                                             Years ended December 31,
                                       -------------------------------------
                                          2005          2004          2003
                                       -------------------------------------

NIR (expense) from external sources      $10,690         ***           ***
NIR (expense) from internal sources       (3,992)        ***           ***
                                       ------------------------------------
Total net interest revenue                 6,698         ***           ***

Other operating revenue                    1,100         ***           ***
Operating expense                          8,828         ***           ***
Net loans charged off                        (31)        ***           ***
Net loss                                $   (524)        ***           ***

Average assets                          $227,081         ***           ***
Average economic capital                   6,830         ***           ***
Average invested capital                  23,480         ***           ***

Return on assets                           (0.23)%       ***           ***
Return on economic capital                 (7.67)        ***           ***
Return on average invested capital         (2.23)        ***           ***
Efficiency ratio                          113.21         ***           ***

*** Data not applicable due to acquisition of Bank of Arizona in April 2005.


ASSESSMENT OF FINANCIAL CONDITION

SECURITIES

BOK Financial maintains a securities portfolio to support its interest rate risk
management  strategies,  provide  liquidity  and  profitability  and comply with
regulatory requirements. Securities are classified as either held for investment
or  available  for sale.  Investment  securities,  which  consist  primarily  of
Oklahoma  municipal  bonds, are carried at cost and adjusted for amortization of
premiums or accretion  of  discounts.  Management  has the ability and intent to
hold these  securities until they mature.  Available for sale securities,  which
may be sold prior to maturity,  are carried at fair value.  Unrealized  gains or
losses,  less deferred taxes,  are recorded as accumulated  other  comprehensive
income in shareholders' equity.

The  amortized  cost of  available  for sale  securities  at  December  31, 2005
increased  $317 million  compared  with the previous  year-end.  Mortgage-backed
securities  increased $293 million and  represented  97% of total  available for
sale securities.  The increase in securities  reflected an increase in available
funds due to strong deposit  growth during 2005. As previously  discussed in the
Net Interest Revenue section of this report, we hold mortgage-backed  securities
as part of our overall interest rate risk management strategy.

The primary  risk of holding  mortgage-backed  securities  comes from  extension
during periods of rising interest rates or prepayment  during periods of falling
interest  rates. We evaluate this risk through  extensive  modeling of risk both
before  making  an  investment  and  throughout  the life of the  security.  The
expected duration of the mortgage-backed  securities  portfolio was 2.8 years at
December 31, 2005.  Management estimates that the expected duration would extend
to 3.3 years assuming a 300 basis point immediate rate shock.



Table 17   Securities
           (Dollars in Thousands)

                                                                                  December 31,
                                                  -----------------------------------------------------------------------------
                                                            2005                      2004                      2003
                                                  -----------------------------------------------------------------------------
                                                   Amortized      Fair       Amortized      Fair       Amortized      Fair
                                                     Cost         Value        Cost         Value        Cost         Value
                                                 -----------------------------------------------------------------------------
Investment:
                                                                                                 
  U.S. Treasury                                    $    1,994  $    1,976   $        -   $        -   $        -   $        -
  Municipal and other tax-exempt                      240,359     238,649      216,986      218,465      184,192      187,354
  Mortgage-backed U.S. agency securities                    -           -        1,287        1,336        2,296        2,418
  Other debt securities                                 2,772       2,781        2,821        2,835        1,463        1,484
- -------------------------------------------------------------------------------------------------------------------------------
     Total                                         $  245,125  $  243,406   $  221,094   $  222,636   $  187,951   $  191,256
- -------------------------------------------------------------------------------------------------------------------------------
Available for sale:
    U.S. Treasury                                  $   16,037     $15,827   $   27,119   $   27,062   $   44,679   $   45,424
    Municipal and other tax-exempt                     17,153      17,078          414          404        3,271        3,257
    Mortgage-backed securities:
      U.S. agencies                                 3,507,047   3,424,356    3,067,611    3,052,375    3,514,158    3,518,926
      Other                                         1,277,161   1,250,701    1,423,613    1,418,770      845,430      848,911
- -------------------------------------------------------------------------------------------------------------------------------
        Total mortgage-backed securities            4,784,208   4,675,057    4,491,224    4,471,145    4,359,588    4,367,837
- -------------------------------------------------------------------------------------------------------------------------------
    Other debt securities                                 124         124          515          528        1,140        1,177
    Equity securities and mutual funds                108,914     113,489       90,343       94,051       96,460      101,173
- -------------------------------------------------------------------------------------------------------------------------------
      Total                                        $4,926,436  $4,821,575   $4,609,615   $4,593,190   $4,505,138   $4,518,868
- -------------------------------------------------------------------------------------------------------------------------------


 21

Net unrealized  losses on available for sale securities  totaled $105 million at
December 31, 2005 compared with net unrealized losses of $16 million at December
31, 2004 due primarily to rising interest rates.  None of the unrealized  losses
resulted from credit quality concerns.  The aggregate gross amount of unrealized
losses at December 31, 2005  totaled  $114  million.  Management  evaluated  the
securities  with  unrealized  losses to  determine if we believe that the losses
were  temporary.  This  evaluation  considered  factors  such as  causes  of the
unrealized  losses  and  prospects  for  recovery  over  various  interest  rate
scenarios and time periods.  We also considered our intent and ability to either
hold or sell the  securities.  It is our belief,  based on  currently  available
information and our evaluation,  that the unrealized  losses in these securities
were temporary.


LOANS

The aggregate  loan  portfolio  before  allowance  for loan losses  totaled $9.1
billion at December 31,  2005,  a $1.2 billion or 15% increase  since last year.
Loan growth was broadly  distributed among the various segments of the portfolio
and across all geographic markets.

The commercial  loan portfolio  increased $724 million during 2005. Much of this
increase was focused in the services  portion of the portfolio,  which increased
$235  million  or  20%.  Services,  which  consist  of  loans  to a  variety  of
businesses,  comprised  16% of the  total  loan  portfolio.  Approximately  $1.1
billion of the services  category is made up of loans with outstanding  balances
of less than $10  million.  Energy  loans  totaled  $1.4 billion or 15% of total
loans.  Outstanding  energy  loans  increased  $176  million or 14% during 2005.
Approximately $1.1 billion of the outstanding balance of energy loans was to oil
and gas producers.  The amount of credit available to these customers  generally
depends on a percentage  of the value of their proven energy  reserves  based on
anticipated  prices.  The  energy  category  also  included  loans to  borrowers
involved in the  transportation  and sale of oil and gas and to  borrowers  that
manufacture equipment or provide other services to the energy industry.

Notable loan  concentrations  by primary industry of the borrowers are presented
in Table 18.



Table 18    Loans
            (In Thousands)
                                                                                     December 31,
                                                            ----------------------------------------------------------------
                                                                 2005         2004         2003         2002         2001
                                                            ------------ ------------ ------------ ------------ ------------
Commercial:
                                                                                                  
   Energy                                                   $1,399,417   $1,223,195   $1,231,599   $1,132,178    $ 987,556
   Services                                                  1,425,821    1,190,814      989,906      917,263      807,691
   Wholesale/retail                                            793,032      699,318      668,202      627,422      600,470
   Manufacturing                                               514,792      484,423      482,657      501,506      467,260
   Healthcare                                                  520,309      424,257      393,929      332,359      276,789
   Agriculture                                                 291,858      262,436      228,222      186,976      170,861
   Other commercial and industrial                             354,706      291,393      342,187      292,094      364,123
                                                            ------------ ------------ ------------ ------------ ------------
     Total commercial                                        5,299,935    4,575,836    4,336,702    3,989,798    3,674,750
Commercial real estate:
   Construction and land development                           638,366      457,399      436,087      356,227      327,455
   Multifamily                                                 204,620      231,985      271,119      307,119      291,687
   Other real estate loans                                   1,146,916      931,726      922,886      772,492      722,633
                                                            ------------ ------------ ------------ ------------ ------------
     Total commercial real estate                            1,989,902    1,621,110    1,630,092    1,435,838    1,341,775
Residential mortgage:
   Secured by 1-4 family residential properties              1,169,331    1,198,918    1,015,643      929,759      703,080
   Residential mortgages held for sale                          51,666       40,262       56,543      133,421      166,093
                                                            ------------ ------------ ------------ ------------ ------------
     Total residential mortgage                              1,220,997    1,239,180    1,072,186    1,063,180      869,173
Consumer                                                       629,144      492,841      444,909      412,167      409,680
- ----------------------------------------------------------- ------------ ------------ ------------ ------------ ------------
     Total                                                   $9,139,978   $7,928,967   $7,483,889   $6,900,983   $6,295,378
- ----------------------------------------------------------- ------------ ------------ ------------ ------------ ------------


 22

BOK Financial participates in shared national credits when appropriate to obtain
or maintain business relationships with local customers. Shared national credits
are defined by banking  regulators  as credits of more than $20 million and with
three or more  non-affiliated  banks as participants.  At December 31, 2005, the
outstanding principal balance of these loans totaled $1.1 billion. Substantially
all of these  loans  are to  borrowers  with  local  market  relationships.  BOK
Financial serves as the agent lender in approximately 30% of its shared national
credits,  based on dollars  committed.  The Company's lending policies generally
avoid loans in which we do not have the opportunity to maintain or achieve other
business relationships with the customer.

Commercial  real estate loans totaled $2.0 billion or 22% of the loan  portfolio
at December 31, 2005. Commercial real estate loans grew $369 million or 23% from
the previous year end.  Growth in commercial  real estate loans was  distributed
across all of our  markets.  Construction  and land  development  included  $494
million for single family residential lots and premises,  up $144 million or 41%
since December 31, 2004. The major  components of other  commercial  real estate
loans were retail facilities - $305 million and office buildings - $499 million.
Commercial real estate loans secured by office buildings  increased $156 million
or 46% during the past year.

Residential mortgage loans, excluding loans held for sale, included $350 million
of home  equity  loans,  $346  million of loans held for  business  relationship
purposes,  $232 million of adjustable  rate  mortgages and $182 million of loans
held for community development. Consumer loans included $357 million of indirect
automobile loans. Indirect automobile loans grew $123 million during 2005 due to
increased  demand.  Substantially all of these loans were purchased from dealers
in Oklahoma,  although the Company began indirect automobile lending in Arkansas
during 2005.

The Company continued to increase geographic  diversification  through expansion
into Texas, New Mexico,  Colorado and Arizona. The percent of the loan portfolio
attributed  to  Oklahoma  was 59% at December  31, 2005 and 62% at December  31,
2004.  Table 20 presents the distribution of the major loan categories among our
primary market areas.



Table 19  Loan Maturity and Interest Rate Sensitivity at December 31, 2005
            (In Thousands)
                                                             Remaining Maturities of Selected Loans
                                                             --------------------------------------
                                                  Total      Within 1 Year 1-5 Years   After 5 Years
                                              -------------- ------------ ------------ ------------
Loan maturity:
                                                                            
   Commercial                                  $5,299,935     $1,915,030   $2,683,475   $ 701,430
   Commercial real estate                       1,989,902        827,606      920,674     241,622
- --------------------------------------------- -------------- ------------ ------------ ------------
      Total                                    $7,289,837     $2,742,636   $3,604,149   $ 943,052
- --------------------------------------------- -------------- ------------ ------------ ------------
Interest rate sensitivity for selected loans with:
   Predetermined interest rates                $2,630,474     $  487,157   $1,684,373   $ 458,944
   Floating or adjustable interest rates        4,659,363      2,255,479    1,919,776     484,108
- --------------------------------------------- -------------- ------------ ------------ ------------
      Total                                    $7,289,837     $2,742,636   $3,604,149   $ 943,052
- --------------------------------------------- -------------- ------------ ------------ ------------



 23


Table 20  Loans by Principal Market Area
           (In Thousands)
                                                                                     December 31,
                                                            ----------------------------------------------------------------
                                                                 2005         2004         2003         2002         2001
                                                            ----------------------------------------------------------------
Oklahoma:
                                                                                                 
   Commercial                                               $3,159,683   $2,847,470   $2,802,852   $2,677,616   $2,576,808
   Commercial real estate                                      862,700      744,724      789,868      763,469      739,419
   Residential mortgage                                        842,757      901,648      699,274      656,391      476,023
   Residential mortgage held for sale                           51,666       40,262       56,543      133,421      166,093
   Consumer                                                    466,180      367,947      324,305      294,404      314,060
                                                            ----------------------------------------------------------------
     Total Oklahoma                                         $5,382,986   $4,902,051   $4,672,842   $4,525,301   $4,272,403
                                                            ----------------------------------------------------------------
Texas:
   Commercial                                               $1,356,611   $1,120,069   $  963,340   $  866,905   $  775,788
   Commercial real estate                                      569,921      459,067      477,561      455,364      380,602
   Residential mortgage                                        199,726      191,296      204,481      192,575      136,181
   Consumer                                                     89,017       86,732      101,269      104,353       85,347
                                                            ----------------------------------------------------------------
     Total Texas                                            $2,215,275   $1,857,164   $1,746,651   $1,619,197   $1,377,918
                                                            ----------------------------------------------------------------
Albuquerque:
   Commercial                                               $  383,325   $  354,904   $  297,896   $  286,622   $  219,257
   Commercial real estate                                      232,564      196,832      175,745      150,293      136,425
   Residential mortgage                                         65,784       63,043       66,179       76,020       85,309
   Consumer                                                     15,137       13,260       11,070       11,399        8,200
                                                            ----------------------------------------------------------------
     Total Albuquerque                                      $  696,810   $  628,039   $  550,890   $  524,334   $  449,191
                                                            ----------------------------------------------------------------
Northwest Arkansas:
   Commercial                                               $   79,719   $   61,934   $   63,480   $   63,113   $   72,728
   Commercial real estate                                       75,483       74,478       75,452       66,712       85,329
   Residential mortgage                                         13,044       11,238        6,245        4,773        5,567
   Consumer                                                     25,659        3,858        2,671        2,011        2,073
                                                            ----------------------------------------------------------------
     Total Northwest Arkansas                               $  193,905   $  151,508   $  147,848   $  136,609   $  165,697
                                                            ----------------------------------------------------------------
Colorado (1):
   Commercial                                               $  270,108   $  191,459   $  209,134   $   95,542   $   30,169
   Commercial real estate                                      133,537      118,134      111,466            -            -
   Residential mortgage                                         21,918       31,693       39,464            -            -
   Consumer                                                     27,871       21,044        5,594            -            -
                                                            ----------------------------------------------------------------
     Total Colorado                                         $  453,434   $  362,330   $  365,658   $    95,542  $    30,169
                                                            ----------------------------------------------------------------
Arizona:
   Commercial                                               $   50,489   $        -   $        -   $        -   $        -
   Commercial real estate                                      115,697       27,875            -            -            -
   Residential mortgage                                         26,102            -            -            -            -
   Consumer                                                      5,280            -            -            -            -
                                                            ----------------------------------------------------------------
     Total Arizona                                          $  197,568   $   27,875   $        -   $        -   $        -
                                                            ----------------------------------------------------------------
     Total BOK Financial loans                              $9,139,978   $7,928,967   $7,483,889   $6,900,983   $6,295,378
                                                            ----------------------------------------------------------------


(1) Includes Denver loan production office

 24

LOAN COMMITMENTS

BOK Financial enters into off-balance sheet arrangements in the normal course of
business.  These  arrangements  included  loan  commitments  which  totaled $4.3
billion and standby letters of credit which totaled $559 million at December 31,
2005. Loan commitments may be unconditional  obligations to provide financing or
conditional  obligations  that  depend on the  borrower's  financial  condition,
collateral value or other factors.  Standby letters of credit are  unconditional
commitments to guarantee the performance of our customer to a third party. Since
some of these  commitments  are expected to expire before being drawn upon,  the
total commitment amounts do not necessarily represent future cash requirements.



Table 21   Off-Balance Sheet Credit Commitments as of December 31, 2005
            (In Thousands)

                                          2005           2004         2003         2002          2001
                                     -------------- ------------- ------------ ------------ -------------
                                                                              
Loan commitments                      $4,349,114     $3,459,425    $2,964,694   $2,884,011   $2,461,141
Standby letters of credit                558,907        414,228       374,550      290,069     248,960
- ------------------------------------ -------------- ------------- ------------ ------------ -------------
Total                                 $4,908,021     $3,873,653    $3,339,244   $3,174,080   $2,710,101
- ------------------------------------ -------------- ------------- ------------ ------------ -------------



DERIVATIVES WITH CREDIT RISK

BOK Financial  offers programs that permit its customers to hedge various risks,
including  fluctuations in energy and cattle prices,  interest rates and foreign
exchange  rates,  or to take  positions in derivative  contracts.  Each of these
programs  work  essentially  the same way.  Derivative  contracts  are  executed
between the  customers  and BOK  Financial.  Offsetting  contracts  are executed
between the Company and  selected  counterparties  to minimize the risk to us of
changes in commodity  prices,  interest  rates or foreign  exchange  rates.  The
counterparty  contracts  are identical to the customer  contracts,  except for a
fixed  pricing  spread or a fee paid to us as  compensation  for  administrative
costs, credit risk and profit.

These programs create credit risk for potential  amounts due to the Company from
its customers  and from the  counterparties.  Customer  credit risk is monitored
through  existing  credit  policies  and  procedures.  The effects of changes in
commodity prices,  interest rates or foreign exchange rates are evaluated across
a range of possible  options to determine the maximum exposure we are willing to
have  individually  to any  customer.  Customers may also be required to provide
margin collateral to further limit our credit risk.

Counterparty  credit risk is evaluated through existing policies and procedures.
This evaluation  considers the total relationship between BOK Financial and each
of the counterparties. Individual limits are established by management, approved
by Credit Administration and reviewed by the Asset / Liability Committee. Margin
collateral is required if the exposure  between the Company and any counterparty
exceeds  established  limits.  Based on declines in the  counterparties'  credit
ratings, these limits are reduced and additional margin collateral is required.

A  deterioration  of the  credit  standing  of one or more of the  customers  or
counterparties  to these contracts may result in BOK  Financial's  recognizing a
loss as the fair value of the  affected  contracts  may no longer move in tandem
with the offsetting  contracts.  This could occur if the credit  standing of the
customer  or  counterparty  deteriorated  such  that  either  the fair  value of
underlying  collateral  no longer  supported  the  contract  or the  customer or
counterparty's ability to provide margin collateral was impaired.

Derivative  contracts are carried at fair value.  At December 31, 2005, the fair
values of derivative  contracts  reported as assets under these programs totaled
$453 million.  This included energy  contracts with fair values of $418 million,
interest  rate  contracts  with fair values of $19 million and foreign  exchange
contracts  with  fair  values  of $15  million.  The  aggregate  fair  values of
derivative contracts reported as liabilities totaled $452 million. Approximately
94% of the fair value of asset contracts was with customers.  The credit risk of
these contracts is generally backed by energy  production.  The remaining 6% was
with counterparties, consisting primarily of highly-rated financial institutions
and energy  companies.  The  maximum  net  exposure  to any single  customer  or
counterparty totaled $85 million.

The Company's policy had been to carry all derivative contracts at fair value on
a gross asset / gross liability basis. Changes in energy prices during the third
quarter  of  2005  caused  significant  increases  in the  fair  values  of both
derivative  assets and  liabilities.  The potential impact of these increases on
regulatory  capital ratios caused the Company to adopt FASB  Interpretation  No.
39,  "Offsetting  Amounts  Related  to Certain  Contracts"  ("FIN  39").  FIN 39
permits, but does not require,  reporting derivative assets and liabilities on a
net by counterparty  basis provided  certain  specified  criteria are met. These
criteria require written bilateral netting agreements between the Com-

 25

pany  and  each of its  counterparties  that  create  a  single  legal  claim or
obligation  to pay or receive  the net amount in  settlement  of the  individual
derivative contracts.  Amounts reported for derivative assets and liabilities in
prior periods have been reclassified for consistent presentation.


SUMMARY OF LOAN LOSS EXPERIENCE

The reserve for loan losses, which is available to absorb losses inherent in the
loan  portfolio,  totaled  $104  million at December  31, 2005  compared to $109
million at December  31,  2004.  These  amounts  represented  1.14% and 1.38% of
outstanding loans, excluding loans held for sale, at December 31, 2005 and 2004,
respectively.  Losses  on  loans  held  for  sale,  principally  mortgage  loans
accumulated for placement into security pools,  are charged to earnings  through
adjustment in the carrying value.  The reserve for loan losses also  represented
413% of the outstanding balance of nonperforming loans at year-end 2005 compared
to 206% at year-end 2004.  Nonperforming loans at December 31, 2005 decreased to
$25  million  compared  with $53  million at the  previous  year-end.  Net loans
charged off during 2005 decreased to $16 million in 2005 compared to $22 million
in the previous year. Net commercial loans charged-off  during 2005 totaled $5.6
million, a $6.0 million decrease from 2004. Net consumer loan charge-offs, which
include deposit  account  overdraft  losses,  were $7.1 million in 2005 and $8.2
million in 2004. Table 22 provides statistical information regarding the reserve
for loan losses for the past five years.



Table 22    Summary of Loan Loss Experience
            (Dollars in Thousands)
                                                                          Years ended December 31,
                                                     -------------------------------------------------------------------
 Reserve for loan losses:                                 2005         2004          2003         2002         2001
                                                     -------------------------------------------------------------------
                                                                                              
   Beginning balance                                   $108,618     $114,784      $103,851      $89,188      $72,183
     Loans charged off:
       Commercial                                         9,670       13,921        16,331       13,326       18,042
       Commercial real estate                             2,619          971            88          286           71
       Residential mortgage                               1,212        1,465         1,721          412          308
       Consumer                                          12,257       13,328        13,335       11,881        6,827
 -----------------------------------------------------------------------------------------------------------------------
         Total                                           25,758       29,685        31,475       25,905       25,248
 -----------------------------------------------------------------------------------------------------------------------
     Recoveries of loans previously charged off:
       Commercial                                         4,071        2,283           887        1,276        1,151
       Commercial real estate                               117           30            53          118          653
       Residential mortgage                                 180          243            83          146           57
       Consumer                                           5,176        5,171         5,102        3,436        2,727
 -----------------------------------------------------------------------------------------------------------------------
         Total                                            9,544        7,727         6,125        4,976        4,588
 -----------------------------------------------------------------------------------------------------------------------
   Net loans charged off                                 16,214       21,958        25,350       20,929       20,660
   Provision for loan losses                             10,401       15,792        34,000       34,228       35,365
   Additions due to acquisitions                          1,071            -         2,283        1,364        2,300
 -----------------------------------------------------------------------------------------------------------------------
   Ending balance                                      $103,876     $108,618      $114,784     $103,851      $89,188
 -----------------------------------------------------------------------------------------------------------------------
   Reserve for off-balance sheet credit losses:
   Beginning balance                                    $18,502      $13,855       $12,219      $12,717      $10,472
   Provision for off-balance sheet credit losses          2,040        4,647         1,636         (498)       2,245
   Additions due to acquisitions                             32            -             -            -            -
 -----------------------------------------------------------------------------------------------------------------------
   Ending balance                                       $20,574      $18,502       $13,855      $12,219      $12,717
 -----------------------------------------------------------------------------------------------------------------------
   Total provision for credit losses                    $12,441      $20,439       $35,636      $33,730      $37,610
 -----------------------------------------------------------------------------------------------------------------------
   Reserve for loan losses to loans outstanding at
     year-end (1)                                          1.14%        1.38%         1.55%        1.53%        1.46%
   Net charge-offs to average loans (1)                    0.19         0.29          0.36         0.33         0.35
   Total provision for credit losses to average loans (1)  0.15         0.27          0.50         0.54         0.63
   Recoveries to gross charge-offs                        37.05        26.03         19.46        19.21        18.17
   Reserve for loan losses as a multiple of net charge-offs6.41x        4.95x         4.53x        4.96x        4.32x
   Reserve for off-balance sheet credit losses to
     off-balance sheet credit commitments                  0.42%        0.48%         0.41%        0.38%        0.47%
   Combined reserves for credit losses to loans
     outstanding at year-end (1)                           1.37%        1.61%         1.73%        1.72%        1.66%
 -----------------------------------------------------------------------------------------------------------------------
   Problem Loans:
     Loans past due (90 days)                          $  8,708     $  7,649      $ 14,944      $ 8,117      $ 8,108
     Nonaccrual2                                         25,162       52,660        52,681       49,855       43,540
     Renegotiated                                             -            -             -            -           27
 -----------------------------------------------------------------------------------------------------------------------
        Total                                          $ 33,870     $ 60,309      $ 67,625      $57,972      $51,675
 -----------------------------------------------------------------------------------------------------------------------
   Foregone interest on nonaccrual loans (2)           $  2,515     $  4,617      $  4,821      $ 4,770      $ 5,163
 -----------------------------------------------------------------------------------------------------------------------
<FN>
(1) Excludes residential mortgage loans held for sale.

(2) Interest collected and recognized on nonaccrual loans was not significant in 2005 and previous years disclosed.
</FN>


 26

The  Company  considers  the credit  risk from loan  commitments  and letters of
credit in its evaluation of the adequacy of the reserve for loan losses.  During
2004, we adopted the preferred presentation method and separated the reserve for
off-balance  sheet  credit  risk  from the  reserve  for loan  losses.  Table 22
presents  the trend of reserves  for  off-balance  sheet  credit  losses and the
relationship  between the reserve and loan  commitments.  It also  presents  the
relationship  between the  combined  reserve for credit  losses and  outstanding
loans  for  comparison  with peer  banks and  others  who have not  adopted  the
preferred  presentation.  The provision for credit losses  included the combined
charge to expense  for both the  reserve  for loan  losses and the  reserve  for
off-balance  sheet credit losses.  All losses  incurred from lending  activities
will ultimately be reflected in charge-offs  against the reserve for loan losses
following  funds  advanced  against   outstanding   commitments  and  after  the
exhaustion  of  collection  efforts.  The reserve for  off-balance  sheet credit
losses  would  decrease  and the  reserve  for loan  losses  would  increase  as
outstanding commitments are funded.

Specific  impairment  reserves are  determined  through  evaluation of estimated
future  cash  flows  and  collateral  value.  At  December  31,  2005,  specific
impairment reserves totaled $2.6 million on total impaired loans of $20 million.

Nonspecific  reserves are  maintained  for risks beyond  factors  specific to an
individual  loan or those  identified  through  migration  analysis.  A range of
potential losses is determined for each risk factor identified.  At December 31,
2005, the ranges of potential losses for the more significant factors were:

General economic conditions - $6 million to $11 million
Concentration in large loans - $2 million to $3 million

Allocation of the loan loss reserve to the major loan categories is presented in
Table 23.

The provision for credit losses totaled $12.4 million,  an $8.0 million decrease
from 2004.  Factors  considered in  determining  the provision for credit losses
included  reductions in the  outstanding  balances of criticized  and classified
loans,  nonperforming loans and potential problem loans. Factors that reduce the
required provision were partially offset by concerns about the effect of changes
in interest rates and energy prices on the commercial real estate and commercial
loan portfolios.



Table 23   Loan Loss Reserve Allocation
           (Dollars in Thousands)

                                                                     December 31,
                           -------------------------------------------------------------------------------------------------
                                  2005                2004                2003                2002               2001
                           ------------------ ------------------- ------------------- ------------------- ------------------
                                       % of                % of                % of                % of               % of
                            Reserve(2)Loans(1) Reserve(2) Loans(1) Reserve(2) Loans(1) Reserve(2) Loans(1) Reserve(2)Loans(1)
                           --------- -------- --------- --------- --------- --------- --------- --------- --------- --------
Loan category:
                                                                                          
   Commercial               $43,915   58.32%   $52,325   58.00%    $58,993   58.39%    $56,474   58.95%  $  51,803   59.95%
   Commercial real
     estate                  25,529   21.89     21,317   20.55      16,395   21.95      16,037   21.22      14,000   21.89
   Residential mortgage       5,302   12.87      5,904   15.20       6,797   13.67       3,956   13.74       3,612   11.47
   Consumer                  10,929    6.92     12,034    6.25      16,132    5.99      13,922    6.09       6,318    6.69
   Nonspecific allowance     18,201      -      17,038      -       16,467      -       13,462      -       13,455       -
- -------------------------- --------- -------- --------- --------- --------- --------- --------- --------- --------- --------
   Total                   $103,876  100.00%  $108,618  100.00%   $114,784  100.00%   $103,851  100.00%  $  89,188  100.00%
- -------------------------- --------- -------- --------- --------- --------- --------- --------- --------- --------- --------
<FN>
(1)  Excludes residential mortgage loans held for sale.

(2)  Specific allocation for the loan concentration risks are included in the appropriate category.
</FN>


 27

NONPERFORMING ASSETS

Information  regarding  nonperforming  assets,  which  totaled  $34  million  at
December 31, 2005 and $56 million at December 31, 2004 is presented in Table 24.
Nonperforming  assets included  nonaccrual and  renegotiated  loans and excluded
loans 90 days or more past due but still  accruing  interest.  Nonaccrual  loans
decreased  to $25 million at December  31, 2005 from $53 million at December 31,
2004.  Newly identified  nonaccruing  loans totaled $17 million during the year.
Nonaccruing loans decreased $17 million for loans charged off and foreclosed and
$16 million for cash payments  received.  Nonaccruing  loans also  decreased $10
million from loans  returned to accruing  status after a period of  satisfactory
performance.



Table 24   Nonperforming Assets
           (Dollars in Thousands)
                                                                                       December 31,
                                                             -----------------------------------------------------------------
                                                                 2005         2004         2003         2002          2001
                                                             ------------ ------------ ------------ ------------ -------------
Nonperforming loans
   Nonaccrual loans:
                                                                                                    
     Commercial                                                $11,673      $33,195      $41,360      $39,114      $35,075
     Commercial real estate                                      5,370       10,144        2,311        3,395        3,856
     Residential mortgage                                        7,347        8,612        7,821        5,950        4,140
     Consumer                                                      772          709        1,189        1,396          469
- ------------------------------------------------------------ ------------ ------------ ------------ ------------ -------------
       Total nonaccrual loans                                   25,162       52,660       52,681       49,855       43,540
   Renegotiated loans                                                -            -            -            -           27
- ------------------------------------------------------------ ------------ ------------ ------------ ------------ -------------
     Total nonperforming loans                                  25,162       52,660       52,681       49,855       43,567
   Other nonperforming assets                                    8,476        3,763        7,186        6,719        7,141
- ------------------------------------------------------------ ------------ ------------ ------------ ------------ -------------
     Total nonperforming assets                                $33,638      $56,423      $59,867      $56,574      $50,708
- ------------------------------------------------------------ ------------ ------------ ------------ ------------ -------------
Ratios:
   Reserve for loan losses to nonperforming loans               412.83%      206.26%      217.89%      208.31%      204.71%
   Nonperforming loans to period-end loans (2)                    0.28         0.67         0.71         0.74         0.71
- ------------------------------------------------------------ ------------ ------------ ------------ ------------ -------------
Loans past due (90 days)(1)                                    $ 8,708      $ 7,649      $14,944      $ 8,117      $ 8,108
- ------------------------------------------------------------ ------------ ------------ ------------ ------------ -------------

<FN>
(1) Includes residential mortgages guaranteed by
    agencies of the U.S. Government.                           $ 2,021      $ 2,308      $ 4,132      $ 4,956      $ 6,222
(2) Excludes residential mortgage loans held for sale.
</FN>



The loan review process also identified  loans that possess more than the normal
amount of risk due to deterioration  in the financial  condition of the borrower
or the value of the  collateral.  Because the borrowers are still  performing in
accordance  with  the  original  terms of the  loan  agreements,  and no loss of
principal  or  interest  is  anticipated,  these  loans  were  not  included  in
Nonperforming Assets. Known information does, however, cause management concerns
as to the  borrowers'  ability to comply with  current  repayment  terms.  These
potential problem loans totaled $28 million at December 31, 2005 and $49 million
at December 31, 2004.  The current  composition  of potential  problem  loans by
primary industry included healthcare - $12 million, real estate - $6 million and
services - $5 million.

DEPOSITS

Deposit accounts represent our primary funding source. We compete for retail and
commercial  deposits  by offering a broad range of  products  and  services  and
focusing on customer convenience. Retail deposit growth is supported through our
Perfect  Banking  program,  free  checking  and  on-line  billpay  services,  an
extensive  network of branch  locations and ATMs and a 24-hour  ExpressBank call
center.  Commercial deposit growth is supported by offering treasury  management
and lockbox services.

Total  deposits  averaged  $10.1 billion for 2005, a $641 million or 7% increase
over 2004. Growth in average deposits came primarily in the Texas,  Oklahoma and
Colorado markets.  Average deposits  increased $192 million or 8% in Texas, $179
million or 3% in Oklahoma and $128 million or 40% in Colorado.  Consumer banking
and personal  financial  services provided much of the deposit growth in each of
these markets.  Additionally,  average  deposits  increased $90 million from the
Bank of Arizona acquisition.

Across all markets,  average core deposits,  which we define as deposits of less
than $100,000,  excluding  public funds and brokered  deposits,  increased 4% to
$5.2 billion. Growth in average core

 28

deposits  resulted from initiatives such as free on-line billpay,  free checking
and Perfect  Banking.  The remaining  average  deposits  included  accounts with
balances  in excess of  $100,000,  which  totaled  $3.9  billion,  and  brokered
deposits and public funds, which totaled $987 million.


Table 25  Maturity of Domestic CDs and Public
           Funds in Amounts of $100,000 or More
           (In Thousands)

                                    December 31,
                              ---------------------------
                                 2005         2004
                              ---------------------------
   Months to maturity:
   3 or less                   $  354,724   $  412,455
   Over 3 through 6               256,919      183,723
   Over 6 through 12              631,691      264,101
   Over 12                      1,226,823    1,388,014
 --------------------------------------------------------
    Total                      $2,470,157   $2,248,293
 --------------------------------------------------------


At December  31,  2005,  the Company  had $442  million in fixed rate,  brokered
certificates  of  deposits.  The  weighted-average  interest  rate paid on these
certificates  is 3.64%.  Interest  rate swaps have been  designated as hedges of
each of these  certificates.  The  purpose  of these  swaps is to hedge  against
changes  in fair  value  due to  changes  in  interest  rates by  modifying  the
certificates  from fixed rate to floating  rates  based on changes in LIBOR.  We
receive a weighted  average fixed rate of 3.81% on these swaps and currently pay
a floating rate of 4.39%.

The  distribution  of deposit  accounts among our principal  markets is shown in
Table 26.

 29


Table 26   Deposits by Principal Market Area
           (In Thousands)

                                                            December 31,
                                -------------------------------------------------------------------
                                     2005         2004         2003         2002          2001
                                --------------------------------------------------------------------
   Oklahoma:
                                                                        
      Demand                      $1,003,284    $1,095,228   $1,025,483   $1,044,628   $  992,663
      Interest-bearing:
        Transaction                3,002,609     2,291,089    2,246,675    1,897,353    1,650,269
        Savings                       85,837        87,597       98,611      103,749      101,433
        Time                       2,564,338     2,505,849    2,403,293    2,334,949    2,041,025
                                --------------------------------------------------------------------
      Total interest-bearing       5,652,784     4,884,535    4,748,579    4,336,051    3,792,727
                                --------------------------------------------------------------------
   Total Oklahoma                 $6,656,068    $5,979,763   $5,774,062   $5,380,679   $4,785,390
                                --------------------------------------------------------------------
   Texas:
      Demand                      $  615,732    $  617,808   $  421,292   $  394,164   $  305,745
      Interest-bearing:
        Transaction                1,535,570     1,119,893    1,213,777      953,550      670,728
        Savings                       27,398        30,331       35,702       33,071       28,918
        Time                         735,731       571,993      505,463      510,512      451,031
                                --------------------------------------------------------------------
      Total interest-bearing       2,298,699     1,722,217    1,754,942    1,497,133    1,150,677
                                --------------------------------------------------------------------
   Total Texas                    $2,914,431    $2,340,025   $2,176,234   $1,891,297   $1,456,422
                                --------------------------------------------------------------------
   Albuquerque:
      Demand                     $   129,289   $   136,599  $   106,050  $    79,953  $    57,648
      Interest-bearing:
        Transaction                  381,099       320,118      370,294      295,174      224,265
        Savings                       17,839        17,885       20,728       26,704       26,848
        Time                         453,314       411,939      317,924      287,607      241,549
                                --------------------------------------------------------------------
      Total interest-bearing         852,252       749,942      708,946      609,485      492,662
                                --------------------------------------------------------------------
   Total Albuquerque             $   981,541   $   886,541  $   814,996  $   689,438  $   550,310
                                --------------------------------------------------------------------
   Northwest Arkansas:
      Demand                     $    10,429   $    14,489  $    16,351  $    12,949  $    10,634
      Interest-bearing:
        Transaction                   22,354        26,882       28,411       18,025       14,452
        Savings                        1,058         1,434        1,341        1,214        1,035
        Time                          75,034        99,677      105,598      134,923       87,501
                                --------------------------------------------------------------------
      Total interest-bearing          98,446       127,993      135,350      154,162      102,988
                                --------------------------------------------------------------------
   Total Northwest Arkansas      $   108,875   $   142,482  $   151,701  $   167,111  $   113,622
                                --------------------------------------------------------------------
   Colorado:
      Demand                      $   61,647    $   62,995   $   79,424   $        -   $        -
      Interest-bearing:
        Transaction                  258,668       189,106      162,651            -            -
        Savings                       17,772        19,092       18,347            -            -
        Time                         264,020        54,394       42,448            -            -
                                --------------------------------------------------------------------
      Total interest-bearing         540,460       262,592      223,446            -            -
                                --------------------------------------------------------------------
   Total Colorado                 $  602,107    $  325,587   $  302,870   $        -   $        -
                                --------------------------------------------------------------------
   Arizona:
      Demand                      $   45,567    $        -   $        -   $        -   $        -
      Interest-bearing:
        Transaction                   56,994             -            -            -            -
        Savings                        4,111             -            -            -            -
        Time                           5,624             -            -            -            -
                                --------------------------------------------------------------------
      Total interest-bearing          66,729             -            -            -            -
                                --------------------------------------------------------------------
   Total Arizona                  $  112,296    $        -   $        -   $        -   $        -
                                --------------------------------------------------------------------
   Total BOK Financial deposits  $11,375,318    $9,674,398   $9,219,863   $8,128,525   $6,905,744
                                --------------------------------------------------------------------


 30

BORROWINGS AND CAPITAL

PARENT COMPANY

BOK Financial  (parent company) has a $100 million  unsecured  revolving line of
credit with certain commercial banks that expires in December 2010. There was no
outstanding  principal  balance of this credit  agreement  at December 31, 2005.
Interest  is based  upon a base  rate or LIBOR  plus a  defined  margin  that is
determined by the  Company's  credit  rating.  This margin ranges from 0.375% to
1.125%.  The margin  currently  applicable  to  borrowings  against this line is
0.500%.  The base rate is defined as the greater of the daily federal funds rate
plus 0.5% or the SunTrust Bank prime rate.  Interest is generally  paid monthly.
Facility  fees are paid  quarterly on the unused  portion of the  commitment  at
rates that range from 0.100% to 0.250% based on the Company's credit rating.

This credit  agreement  includes  certain  restrictive  covenants that limit the
Company's  ability to borrow  additional  funds, to make  investments and to pay
cash dividends on common stock.  These  covenants also require BOK Financial and
subsidiary  banks to maintain  minimum capital levels.  BOK Financial met all of
the restrictive covenants at December 31, 2005.

The primary source of liquidity for BOK Financial is dividends  from  subsidiary
banks,  which are limited by various  banking  regulations  to net  profits,  as
defined,  for the  preceding  two years.  Dividends  are further  restricted  by
minimum capital  requirements.  Based on the most restrictive  limitations,  the
subsidiary  banks  could  declare  up  to  $158  million  of  dividends  without
regulatory  approval.  Management  has  developed and the Board of Directors has
approved an internal capital policy that is more restrictive than the regulatory
capital  standards.  The subsidiary  banks could declare  dividends of up to $86
million under this policy.

Equity  capital for BOK Financial  increased $141 million to $1.5 billion during
2005.  Retained  earnings,  net income less cash dividends  paid,  provided $181
million to this increase.  Growth in retained earnings was partially offset by a
$56 million increase in accumulated other comprehensive  losses due primarily to
net unrealized losses on available for sale securities.  The remaining  increase
in  capital   during  2005  resulted   primarily   from  employee  stock  option
transactions.

Capital is managed to  maximize  long-term  value to the  shareholders.  Factors
considered in managing  capital include  projections of future  earnings,  asset
growth  and   acquisition   strategies,   and   regulatory   and  debt  covenant
requirements.  Capital management may include subordinated debt issuance,  share
repurchase and stock and cash dividends.

On April 26, 2005, the Board of Directors  authorized a share repurchase program
which replaced a previously  authorized program. A maximum of two million common
shares may be repurchased.  The specific timing and amount of shares repurchased
will vary  based on market  conditions,  securities  law  limitations  and other
factors.  Repurchases  may be  made  over  time  in  open  market  or  privately
negotiated transactions. The repurchase program may be suspended or discontinued
at any time without prior notice.  Since this program began,  30,000 shares have
been repurchased by the Company for $1.3 million.

During the second quarter of 2005, the Board of Directors approved the Company's
first  quarterly  cash  dividend of $0.10 per common share.  The quarterly  cash
dividend  replaced  the annual  dividend  historically  paid in shares of common
stock.  Concurrent  with the  first  quarterly  cash  dividend,  holders  of the
Company's  convertible preferred stock exercised their conversion rights. All of
the Series A Preferred Stock was converted into 6,920,666 common shares.

BOK Financial and subsidiary  banks are subject to various capital  requirements
administered by federal agencies.  Failure to meet minimum capital  requirements
can result in certain mandatory and possibly additional discretionary actions by
regulators  that could  have a  material  impact on  operations.  These  capital
requirements   include   quantitative   measures  of  assets,   liabilities  and
off-balance  sheet items. The capital  standards are also subject to qualitative
judgments  by the  regulators.  The capital  ratios for BOK  Financial  and each
subsidiary  bank  are  presented  in  Note  16  to  the  Consolidated  Financial
Statements.

SUBSIDIARY BANKS

BOK  Financial's  subsidiary  banks use  borrowings to supplement  deposits as a
source of funds for loans and  securities  growth.  Sources of these  borrowings
included federal funds purchased,  securities repurchase agreements and advances
from the Federal  Home Loan Banks.  Interest  rates and  maturity  dates for the
various borrowings are matched with specific asset types in the  asset/liability
management process.  Note 10 to the Consolidated  Financial  Statements provides
additional  information  about  the  subsidiary  banks'  borrowings,   including
maturity and repricing periods and collateral requirements.

 31

During  2005,  Bank of  Oklahoma  issued  $150  million of  10-year,  fixed rate
subordinated  debt.  The  cost of this  subordinated  debt,  including  issuance
discounts and hedge loss is 5.43%.  The proceeds of this debt were used to repay
$95 million of BOK Financial's unsecured revolving line of credit and to provide
additional capital to support asset growth.

In 1997,  Bank of Oklahoma  issued $150  million of 10-year,  7.125%  fixed rate
subordinated  debt.  During 2004, a $150 million  notional  amount interest rate
swap was designated as a hedge of changes in fair value of the subordinated debt
due to changes in interest  rates.  The Company  receives a fixed rate of 3.165%
and pays a variable rate based on 1-month LIBOR.  Semi-annual  swap  settlements
coincide with interest payments on the subordinated debenture. The interest rate
swap terminates on August 15, 2007, the maturity date of the subordinated debt.

OFF-BALANCE SHEET ARRANGEMENTS

During 2002, BOK Financial  agreed to a limited price  guarantee on a portion of
the common shares issued to purchase Bank of Tanglewood.  The fair value of this
guarantee,  estimated  to be $3  million  based  upon the  Black-Scholes  option
pricing model,  was included in the purchase price.  Any holder of BOK Financial
common  shares  issued in this  acquisition  may  annually  make a claim for the
excess of the  guaranteed  price and the actual  sales  price of any shares sold
during a 60-day  period  after each of the first five  anniversary  dates  after
October 25, 2002.  The maximum annual number of shares subject to this guarantee
is 210,069.  The price guarantee is  non-transferable  and  non-cumulative.  BOK
Financial  may elect,  in its sole  discretion,  to issue  additional  shares of
common stock or to pay cash to satisfy any obligation under the price guarantee.
The maximum  remaining  number of shares that may be issued to satisfy any price
guarantee  obligations  is 10 million.  If, as of any  benchmark  date,  we have
already  issued 10 million  shares,  we are not  obligated  to make any  further
benchmark payments.  Additionally,  the Company's ability to pay cash to satisfy
any price  guarantee  obligations is limited by applicable  banking  capital and
dividend regulations.

The Company will have no  obligation  to issue  additional  common shares or pay
cash to satisfy any benchmark  price  protection  obligation if the market value
per share of BOK  Financial  common stock  remains  above the highest  benchmark
price of $42.53. The closing price of the Company's common stock on December 31,
2005 was $45.43.

AGGREGATE CONTRACTUAL OBLIGATIONS

BOK  Financial  has numerous  contractual  obligations  in the normal  course of
business.  These  obligations  include time deposits and other  borrowed  funds,
premises used under various  operating  leases,  commitments to extend credit to
borrowers  and to purchase  securities,  derivative  contracts and contracts for
services  such as data  processing  that are  integral  to our  operations.  The
following table  summarizes  payments due per these  contractual  obligations at
December 31, 2005.


Table 27   Contractual Obligations as of December 31, 2005
            (In Thousands)

                                        Less Than       1 to 3        4 to 5     More Than
                                         1 Year         Years         Years       5 Years       Total
                                     -------------- ------------- ------------ ------------ -------------
                                                                              
Time deposits                         $1,010,487     $1,328,851    $  690,977   $446,834    $3,477,149
Other borrowings                       1,046,357          5,813        14,526     11,910     1,078,606
Subordinated debentures                   18,188        182,367        15,000    183,125       398,680
Operating lease obligations               14,963         26,328        22,090     29,883        93,264
Derivative contracts                     308,823        128,411        13,975        805       452,014
Data processing contracts                 13,967         23,544        13,868          -        51,379
- ------------------------------------ -------------- ------------- ------------ ------------ -------------
Total                                 $2,412,785     $1,695,314    $  770,436   $672,557    $5,551,092
- ------------------------------------ -------------- ------------- ------------ ------------ -------------


Loan commitments                                               $  4,349,114
Standby letters of credit                                           558,907
Unfunded third-party private equity investments                      16,438
Deferred compensation and stock-based compensation obligations       18,278

 32

Payments on time deposits and other borrowed funds include  interest,  which has
been calculated from rates at December 31, 2005. Many of these  obligations have
variable  interest rates, and actual payments will differ from the amounts shown
on this table.  Obligations  under  derivative  contracts used for interest rate
risk management purposes are included with projected payments from time deposits
and other borrowed funds as appropriate.

Only time deposits with original terms exceeding one year are presented in Table
27.  Payments on time deposits are based on contractual  maturity  dates.  These
funds may be withdrawn  prior to maturity.  We may charge the customer a penalty
for early withdrawal.

Operating lease commitments generally represent real property we rent for branch
offices,  corporate  offices  and  operations  facilities.   Payments  presented
represent the minimum lease payments and exclude related costs such as utilities
and property taxes.

Data processing contracts represent the minimum obligations under the contracts.
Additional  payments that are based on the volume of transactions  processed are
excluded.

Loan commitments  represent legally binding  obligations to provide financing to
our  customers.  Since some of these  commitments  are expected to expire before
being drawn upon,  the total  commitment  amounts do not  necessarily  represent
future cash requirements.

Obligations under derivative  contracts relate to customer hedging programs.  As
previously  discussed,  we have  entered  into  derivative  contracts  that  are
expected to substantially offset the cash payments due on these obligations.

The Company  has  commitments  to make  investments  through  its BOK  Financial
Private Equity Fund. These  commitments  generally  reflect customer  investment
obligations.

The Company has  compensation  and employment  agreements with its President and
Chief Executive Officer.  Collectively,  these agreements  provide,  among other
things,  that all unvested  stock-based  compensation  shall fully vest upon his
termination,  subject to certain  conditions.  These agreements also provide for
settlement  in cash or other  assets.  We  currently  have  recognized  an $11.7
million  liability  for these  plans.  This  liability  would  increase to $13.0
million if all awards were fully vested.  We also have  obligations with respect
to employee and executive benefit plans. See Notes 12 and 13 to the Consolidated
Financial Statements.

MARKET RISK

Market risk is a broad term for the risk of economic loss due to adverse changes
in the fair value of a financial instrument.  These changes may be the result of
various factors,  including interest rates,  foreign exchange prices,  commodity
prices or equity prices.  Financial  instruments that are subject to market risk
can be  classified  either as held for trading or held for  purposes  other than
trading.

BOK Financial is subject to market risk primarily  through the effect of changes
in interest  rates on both its assets held for  purposes  other than trading and
trading assets.  The effects of other changes,  such as foreign  exchange rates,
commodity prices or equity prices,  do not pose  significant  market risk to BOK
Financial. BOK Financial has no material investments in assets that are affected
by  changes  in  foreign  exchange  rates or equity  prices.  Energy  derivative
contracts,  which are  affected  by changes in  commodity  prices,  are  matched
against offsetting contracts as previously discussed.

Responsibility  for  managing  market  risk  rests  with the  Asset /  Liability
Committee  that operates  under policy  guidelines  established  by the Board of
Directors. The acceptable negative variation in net interest revenue, net income
or economic value of equity due to a specified  basis point increase or decrease
in interest  rates is generally  limited by these  guidelines to +/- 10%.  These
guidelines also set maximum levels for short-term borrowings, short-term assets,
public funds and brokered  deposits,  and establish minimum levels for unpledged
assets,  among  other  things.  Compliance  with these  guidelines  is  reviewed
monthly.

INTEREST RATE RISK - OTHER THAN TRADING

BOK Financial  has a large portion of its earning  assets in variable rate loans
and  a  large  portion  of  its  liabilities  in  demand  deposit  accounts  and
interest-bearing  transaction accounts. Changes in interest rates affect earning
assets  more  rapidly  than  interest-bearing  liabilities  in  the  short-term.
Management  has  adopted  several   strategies  to  reduce  this  interest  rate
sensitivity.  As previously  noted in the Net Interest  Revenue  section of this
report,  management  acquires  securities  that are funded by  borrowings in the
capital markets. These securities have an expected average duration of 2.8 years
while the related funds borrowed have an average duration of 90 days.

 33

BOK  Financial  also uses  interest  rate  swaps to  manage  its  interest  rate
sensitivity. These products are generally used to more closely match interest on
certain  fixed rate loans with funding  sources and  long-term  certificates  of
deposit with earning assets. Net interest revenue decreased $1.4 million in 2005
and increased $9.9 million in 2004 from periodic settlements of these contracts.
These  contracts  are carried on the balance  sheet at fair value and changes in
fair value are reported in income as derivatives  gains or losses. A net gain of
$1.1 million was  recognized in 2005 compared with a net loss of $1.3 million in
2004 from  adjustments  of these  swaps and hedged  liabilities  to fair  value.
Credit risk from these swaps is closely monitored as part of our overall process
of  managing  credit  exposure  to  other  financial  institutions.   Additional
information regarding interest rate swap contracts is presented in Note 4 to the
Consolidated Financial Statements.

The effectiveness of these strategies in managing the overall interest rate risk
is evaluated through the use of an asset/liability model. BOK Financial performs
a sensitivity  analysis to identify more dynamic  interest rate risk  exposures,
including  embedded option positions,  on net interest  revenue,  net income and
economic value of equity.  A simulation  model is used to estimate the effect of
changes in interest rates over the next 12 and 24 months based on eight interest
rate  scenarios.  Two  specified  interest  rate  scenarios are used to evaluate
interest  rate risk against  policy  guidelines.  The first  assumes a sustained
parallel 200 basis point  increase and the second  assumes a sustained  parallel
200 basis  point  decrease  in  interest  rates.  The  Company  also  performs a
sensitivity  analysis  based on a "most likely"  interest rate  scenario,  which
includes non-parallel shifts in interest rates. An independent source is used to
determine the most likely interest rate scenario.

The Company's  primary  interest rate exposures  include the Federal Funds rate,
which affects short-term borrowings, and the prime lending rate and LIBOR, which
are the basis for much of the variable rate loan pricing. Additionally, mortgage
rates directly affect the prepayment speeds for  mortgage-backed  securities and
mortgage servicing rights.  Derivative financial instruments and other financial
instruments   used  for  purposes  other  than  trading  are  included  in  this
simulation.  The model incorporates assumptions regarding the effects of changes
in interest rates and account balances on indeterminable maturity deposits based
on a combination  of historical  analysis and expected  behavior.  The impact of
planned  growth and new  business  activities  is factored  into the  simulation
model.  The  effects  of  changes  in  interest  rates on the value of  mortgage
servicing  rights are excluded from Table 28 due to the extreme  volatility over
such a large rate range.  The effects of interest  rate  changes on the value of
mortgage  servicing  rights and  securities  identified  as economic  hedges are
presented in the Lines of Business - Mortgage Banking section of this report.



Table 28  Interest Rate Sensitivity
             (Dollars in Thousands)
                                                  200 bp Increase             200 bp Decrease               Most Likely
                                            ----------------------------------------------------------------------------------
                                                 2005         2004           2005          2004           2005        2004
                                            ----------------------------------------------------------------------------------
 Anticipated impact over the next twelve
                                                                                                 
 months on net interest revenue                $  7,334      $  7,969       $ (7,295)        ***       $  5,675    $  5,893
                                                    1.5%          1.8%          (1.5)%       ***            1.2%        1.3%
 -----------------------------------------------------------------------------------------------------------------------------
*** A 200 basis point decrease was not computed in 2004 due to low market
interest rates.


The  simulations  used to manage  market risk are based on numerous  assumptions
regarding  the effects of changes in interest  rates on the timing and extent of
repricing  characteristics,  future  cash  flows and  customer  behavior.  These
assumptions  are  inherently  uncertain,  and,  as a result,  the  model  cannot
precisely estimate net interest revenue,  net income or economic value of equity
or  precisely  predict  the  impact  of higher  or lower  interest  rates on net
interest  revenue,  net income or economic value of equity.  Actual results will
differ from simulated results due to timing, magnitude and frequency of interest
rate changes, market conditions and management strategies, among other factors.

 34

TRADING ACTIVITIES

BOK  Financial  enters  into  trading  activities  both as an  intermediary  for
customers and for its own account.  As an intermediary,  BOK Financial will take
positions in securities, generally mortgage-backed securities, government agency
securities  and municipal  bonds.  These  securities are purchased for resale to
customers,  which include individuals,  corporations,  foundations and financial
institutions.  BOK Financial will also take trading  positions in U.S.  Treasury
securities,  mortgage-backed  securities,  municipal bonds and financial futures
for its own account.  These positions are taken with the objective of generating
trading profits. Both of these activities involve interest rate risk.

A variety  of  methods  are used to manage  the  interest  rate risk of  trading
activities.  These  methods  include  daily  marking of all  positions to market
value,  independent  verification  of inventory  pricing and position limits for
each trading activity.  Hedges in either the futures or cash markets may be used
to reduce the risk associated with some trading programs.

Management  uses a Value at Risk ("VAR")  methodology to measure the market risk
inherent in its trading  activities.  VAR is  calculated  based upon  historical
simulations  over the past five years  using a variance /  covariance  matrix of
interest rate changes.  It represents an amount of market loss that is likely to
be exceeded only one out of every 100 two-week  periods.  Trading  positions are
managed within guidelines  approved by the Board of Directors.  These guidelines
limit the VAR to $1.8 million.  At December 31, 2005, the VAR was $241 thousand.
The greatest value at risk during 2005 was $1.8 million.

RECENTLY ISSUED ACCOUNTING STANDARDS

FINANCIAL ACCOUNTING STANDARDS BOARD

STATEMENT OF FINANCIAL ACCOUNTING STANDARDS 123R,
"SHARE-BASED PAYMENTS" ("FAS 123R")

FAS 123R requires  companies to recognize in income  statements  the  grant-date
fair  value of stock  options  and  other  equity-based  compensation  issued to
employees. Previously, FAS 123 recommended, but did not require income statement
recognition  of the  fair  value of  equity-based  compensation.  FAS 123R  also
requires that share-based payments that meet specified criteria be classified as
liability awards and carried at current fair value.  Fair value is determined at
each balance sheet date until the award is settled.  Share-payments that will be
settled in equity  instruments  are  measured at  grant-date  fair value and not
re-measured  for  subsequent  changes in fair value.  FAS 123R was effective for
annual periods beginning on or after June 15, 2005.

We previously adopted the preferred income statement  recognition methods of the
original  FAS 123.  Management  does not expect  FAS 123R to have a  significant
effect on its financial statements.

FSP 115-1 AND FAS 124-1 THE MEANING OF OTHER-THAN-TEMPORARY IMPAIRMENT AND ITS
APPLICATION TO CERTAIN INVESTMENTS ("FSP 115-1")

FSP 115-1  addressed  the  determination  as to when an investment is considered
impaired, whether that impairment is other-than-temporary and the measurement of
an impairment loss. It also addressed  accounting  considerations  subsequent to
the  recognition of an  other-than-temporary  impairment and  disclosures  about
unrealized losses that have not been recognized.

An  investment  is  considered  impaired  when its fair value is less than cost.
Determination   of  when  an   unrealized   loss  must  be   recognized   as  an
other-than-temporary  impairment is based on an assessment of factors, including
the nature of the asset, the financial  condition and near-term prospects of the
issuer,  whether  the asset can be prepaid  by the  issuer in a manner  that the
investor  will not recover its  investment,  the  severity  and  duration of the
impairment  and the  investor's  ability  and intent to hold the asset until the
fair value recovers.

FSP 115-1 was effective for reporting periods beginning after December 15, 2005.
Guidance provided by FSP 115-1 had previously been issued in other authoritative
literature, including SEC Staff Accounting Bulletin No. 59, and we do not expect
a significant impact on future financial statements.

 35

FORWARD-LOOKING STATEMENTS

This report contains  forward-looking  statements that are based on management's
beliefs, assumptions, current expectations,  estimates and projections about BOK
Financial,  the financial  services  industry and the economy in general.  Words
such as "anticipates," "believes," "estimates," "expects," "forecasts," "plans,"
"projects,"  variations  of such words and similar  expressions  are intended to
identify such forward-looking  statements.  Management judgments relating to and
discussion of the provision and reserve for loan losses involve  judgments as to
expected events and are inherently forward-looking statements.  Assessments that
BOK Financial's  acquisitions  and other growth endeavors will be profitable are
necessary statements of belief as to the outcome of future events, based in part
on  information  provided by others  that BOK  Financial  has not  independently
verified.  These statements are not guarantees of future performance and involve
certain risks,  uncertainties and assumptions that are difficult to predict with
regard to timing, extent, likelihood and degree of occurrence. Therefore, actual
results and outcomes may  materially  differ from what is expressed,  implied or
forecasted in such  forward-looking  statements.  Internal and external  factors
that might  cause such a  difference  include,  but are not  limited to: (1) the
ability to fully realize  expected cost savings from mergers within the expected
time frames, (2) the ability of other companies on which BOK Financial relies to
provide  goods and  services  in a timely and  accurate  manner,  (3) changes in
interest  rates and  interest  rate  relationships,  (4) demand for products and
services,  (5) the  degree of  competition  by  traditional  and  nontraditional
competitors,  (6) changes in banking regulations,  tax laws, prices,  levies and
assessments, (7) the impact of technological advances and (8) trends in customer
behavior  as well as  their  ability  to  repay  loans.  BOK  Financial  and its
affiliates undertake no obligation to update,  amend or clarify  forward-looking
statements, whether as a result of new information, future events or otherwise.

LEGAL NOTICE

As used in this  report,  the  term  "BOK  Financial"  and  such  terms  as "the
Company,"  "the  Corporation,"  "our," "we" and "us" may refer to one or more of
the  consolidated  subsidiaries or all of them taken as a whole. All these terms
are used for convenience  only and are not intended as a precise  description of
any of the separate companies, each of which manages its own affairs.

 36

REPORT OF MANAGEMENT ON FINANCIAL STATEMENTS

Management of BOK Financial is responsible  for the  preparation,  integrity and
fair  presentation of the  consolidated  financial  statements  included in this
annual  report.  The  consolidated  financial  statements  have been prepared in
accordance with accounting  principles  generally  accepted in the United States
and  necessarily  include some amounts that are based on our best  estimates and
judgments.

Management,  under the supervision of the Chief Executive  Officer and the Chief
Financial  Officer,  conducted an assessment of internal  control over financial
reporting as of December 31, 2005.  Internal control over financial reporting is
a process designed to provide reasonable  assurance regarding the reliability of
financial reporting and the preparation of the Company's  consolidated financial
statements  for  external  purposes in  accordance  with  accounting  principles
generally  accepted in the United States. In establishing  internal control over
financial reporting, management assesses risk and designs controls to prevent or
detect financial reporting  misstatements that may be consequential to a reader.
Management  also assesses the impact of any internal  control  deficiencies  and
oversees  efforts  to  continuously  improve  internal  control  over  financial
reporting.  Because  of  inherent  limitations,  it is  possible  that  internal
controls  may not  prevent  or detect  misstatements,  and it is  possible  that
internal  controls may vary over time based on changing  conditions.  There have
been no material changes in internal controls subsequent to December 31, 2005.

The Risk  Oversight  and Audit  Committee,  consisting  entirely of  independent
directors,   meets  regularly  with  management,   internal   auditors  and  the
independent  registered  public  accounting firm,  Ernst & Young LLP,  regarding
management's assessment of internal control over financial reporting.


MANAGEMENT'S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

Management is responsible for  establishing  and maintaining  adequate  internal
control over financial reporting and for assessing the effectiveness of internal
control over financial reporting,  as such term is defined in Exchange Act Rules
13a-15(f)  and  15d-15(f).  Management  has  assessed the  effectiveness  of the
Company's  internal  control  over  financial  reporting  based on the  criteria
established  in  "Internal  Control  -  Integrated  Framework,"  issued  by  the
Committee of Sponsoring Organizations ("COSO") of the Treadway Commission. Based
on that  assessment and criteria,  management  has  determined  that the Company
maintained  effective  internal control over financial  reporting as of December
31, 2005.

Ernst & Young  LLP,  the  independent  registered  public  accounting  firm that
audited the  consolidated  financial  statements of the Company included in this
annual  report,  has issued an audit report on  management's  assessment  of the
effectiveness of the Company's  internal control over financial  reporting as of
December  31,  2005.  Their  report,  which  expresses  unqualified  opinions on
management's  assessment  and on the  effectiveness  of the  Company's  internal
control over  financial  reporting as of December 31, 2005,  is included in this
annual report.

 37

REPORTS OF ERNST & YOUNG LLP, INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

REPORT ON CONSOLIDATED FINANCIAL STATEMENTS

The Board of Directors and Shareholders of BOK Financial Corporation

We have audited the  accompanying  consolidated  balance sheets of BOK Financial
Corporation  as of  December  31, 2005 and 2004,  and the  related  consolidated
statements  of earnings,  shareholders'  equity,  and cash flows for each of the
three years in the period ended December 31, 2005.  These  financial  statements
are the  responsibility of the Company's  management.  Our  responsibility is to
express an opinion on these financial statements based on our audits.

We conducted our audits in accordance  with the standards of the Public  Company
Accounting Oversight Board (United States). Those standards require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements.  An audit also includes assessing the accounting principles used and
significant  estimates  made by  management,  as well as evaluating  the overall
financial  statement  presentation.   We  believe  that  our  audits  provide  a
reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material  respects,  the  consolidated  financial  position of BOK Financial
Corporation at December 31, 2005 and 2004, and the  consolidated  results of its
operations  and its cash flows for each of the three  years in the period  ended
December  31,  2005,  in  conformity  with U.S.  generally  accepted  accounting
principles.

We also have  audited,  in accordance  with the standards of the Public  Company
Accounting  Oversight Board (United States),  the effectiveness of BOK Financial
Corporation's internal control over financial reporting as of December 31, 2005,
based on criteria established in Internal  Control--Integrated  Framework issued
by the Committee of Sponsoring  Organizations of the Treadway Commission and our
report dated March 10, 2006 expressed an unqualified opinion thereon.


Ernst & Young LLP
Tulsa, Oklahoma
March 10, 2006

 38

REPORTS OF ERNST & YOUNG LLP, INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

REPORT ON EFFECTIVENESS OF INTERNAL CONTROL OVER FINANCIAL REPORTING

The Board of Directors and Shareholders of BOK Financial Corporation

We  have  audited   management's   assessment,   included  in  the  accompanying
Management's  Report on Internal  Control  over  Financial  Reporting,  that BOK
Financial  Corporation  maintained  effective  internal  control over  financial
reporting  as of December 31, 2005,  based on criteria  established  in Internal
Control--Integrated   Framework   issued   by  the   Committee   of   Sponsoring
Organizations  of the Treadway  Commission  (the COSO  criteria).  BOK Financial
Corporation's  management is  responsible  for  maintaining  effective  internal
control over financial  reporting and for its assessment of the effectiveness of
internal control over financial  reporting.  Our responsibility is to express an
opinion on management's  assessment and an opinion on the  effectiveness  of the
company's internal control over financial reporting based on our audit.

We conducted  our audit in accordance  with the standards of the Public  Company
Accounting Oversight Board (United States). Those standards require that we plan
and perform the audit to obtain  reasonable  assurance  about whether  effective
internal  control  over  financial  reporting  was  maintained  in all  material
respects. Our audit included obtaining an understanding of internal control over
financial reporting,  evaluating management's assessment, testing and evaluating
the design and operating  effectiveness of internal control, and performing such
other  procedures as we considered  necessary in the  circumstances.  We believe
that our audit provides a reasonable basis for our opinion.

A company's  internal control over financial  reporting is a process designed to
provide reasonable  assurance  regarding the reliability of financial  reporting
and the preparation of financial  statements for external purposes in accordance
with generally accepted accounting principles. A company's internal control over
financial  reporting  includes those policies and procedures that (1) pertain to
the  maintenance  of records that, in reasonable  detail,  accurately and fairly
reflect the  transactions  and  dispositions  of the assets of the company;  (2)
provide  reasonable  assurance  that  transactions  are recorded as necessary to
permit preparation of financial statements in accordance with generally accepted
accounting  principles,  and that receipts and  expenditures  of the company are
being made only in accordance with authorizations of management and directors of
the company; and (3) provide reasonable assurance regarding prevention or timely
detection of  unauthorized  acquisition,  use, or  disposition  of the company's
assets that could have a material effect on the financial statements.

Because of its inherent  limitations,  internal control over financial reporting
may not prevent or detect misstatements.  Also, projections of any evaluation of
effectiveness to future periods are subject to the risk that controls may become
inadequate  because of changes in  conditions,  or that the degree of compliance
with the policies or procedures may deteriorate.

In  our  opinion,   management's   assessment  that  BOK  Financial  Corporation
maintained  effective  internal control over financial  reporting as of December
31,  2005,  is  fairly  stated,  in all  material  respects,  based  on the COSO
criteria.  Also, in our opinion, BOK Financial  Corporation  maintained,  in all
material  respects,  effective  internal control over financial  reporting as of
December 31, 2005, based on the COSO criteria.

We also have  audited,  in accordance  with the standards of the Public  Company
Accounting  Oversight Board (United  States),  the 2005  consolidated  financial
statements  of BOK  Financial  Corporation  and our report  dated  March 10,
2006 expressed an unqualified opinion thereon.

Ernst & Young LLP
Tulsa, Oklahoma
March 10, 2006

 39


Consolidated Statements of Earnings
(In Thousands Except Share And Per Share Data)

                                                                                 2005              2004              2003
                                                                          ----------------- ----------------- -----------------
INTEREST REVENUE
                                                                                                       
Loans                                                                       $   554,691       $   408,115       $   375,788
Taxable securities                                                              205,952           197,884           180,581
Tax-exempt securities                                                             7,329             7,359             7,898
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
         Total securities                                                       213,281           205,243           188,479
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
Trading securities                                                                  675               573               625
Funds sold and resell agreements                                                  1,287               353               281
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
         Total interest revenue                                                 769,934           614,284           565,173
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
INTEREST EXPENSE
Deposits                                                                        210,400           144,433           131,929
Borrowed funds                                                                   95,826            38,847            32,272
Subordinated debentures                                                          14,367             7,761             9,477
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
         Total interest expense                                                 320,593           191,041           173,678
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
NET INTEREST REVENUE                                                            449,341           423,243           391,495
PROVISION FOR CREDIT LOSSES                                                      12,441            20,439            35,636
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
NET INTEREST REVENUE AFTER PROVISION FOR CREDIT LOSSES                          436,900           402,804           355,859
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
OTHER OPERATING REVENUE
Brokerage and trading revenue                                                    44,222            41,107            41,152
Transaction card revenue                                                         72,036            64,816            57,352
Trust fees and commissions                                                       65,187            57,532            45,763
Service charges and fees on deposit accounts                                     98,361            93,712            82,042
Mortgage banking revenue                                                         30,681            28,189            52,336
Other revenue                                                                    35,114            27,209            27,573
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
         Total fees and commissions                                             345,601           312,565           306,218
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
Gain on sales of assets                                                           7,061               887               822
Gain (loss) on securities, net                                                   (6,895)           (3,088)            7,188
Gain (loss) on derivatives, net                                                   1,179            (1,474)           (9,375)
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
         Total other operating revenue                                          346,946           308,890           304,853
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
OTHER OPERATING EXPENSE
Personnel                                                                       258,971           240,661           222,922
Business promotion                                                               17,964            15,618            12,937
Contribution of stock to BOK Charitable Foundation                                    -             5,561                 -
Professional fees and services                                                   16,596            15,487            17,935
Net occupancy and equipment                                                      50,195            47,289            45,967
Data processing and communications                                               67,026            60,025            53,398
Printing, postage and supplies                                                   15,066            14,034            13,930
Net (gains) losses and operating expenses on repossessed assets                     572            (4,016)              271
Amortization of intangible assets                                                 6,943             8,138             8,101
Mortgage banking costs                                                           14,562            18,167            40,296
Recovery for impairment of mortgage servicing rights                             (3,915)           (1,567)          (22,923)
Other expense                                                                    25,126            21,827            20,604
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
         Total other operating expense                                          469,106           441,224           413,438
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
INCOME BEFORE TAXES                                                             314,740           270,470           247,274
Federal and state income tax                                                    113,235            91,447            88,914
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
NET INCOME                                                                  $   201,505       $   179,023       $   158,360
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
EARNINGS PER SHARE:
    Basic                                                                   $     3.14        $     3.00        $      2.67
    Diluted                                                                 $     3.01        $     2.68        $      2.38
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------
AVERAGE SHARES USED IN COMPUTATION:
    Basic                                                                    64,067,873        59,128,395        58,699,951
    Diluted                                                                  67,047,064        66,732,496        66,509,121
- ------------------------------------------------------------------------- ----------------- ----------------- -----------------

See accompanying notes to consolidated financial statements.

 40


Consolidated Balance Sheets
(In Thousands Except Share Data)

                                                                                                       December 31,
                                                                                            -----------------------------------
                                                                                                  2005              2004
                                                                                            ----------------- -----------------
ASSETS
                                                                                                        
Cash and due from banks                                                                       $    684,857      $    503,715
Funds sold and resell agreements                                                                    14,465            27,376
Trading securities                                                                                  18,633             9,692
Securities:
   Available for sale                                                                            4,821,575         4,080,696
   Available for sale securities pledged to creditors                                                    -           512,494
   Investment (fair value: 2005 - $243,406;  2004 - $222,636)                                      245,125           221,094
- ------------------------------------------------------------------------------------------- ----------------- -----------------
   Total securities                                                                              5,066,700         4,814,284
- ------------------------------------------------------------------------------------------- ----------------- -----------------
Loans                                                                                            9,139,978         7,928,967
Less reserve for loan losses                                                                      (103,876)         (108,618)
- ------------------------------------------------------------------------------------------- ----------------- -----------------
   Loans, net of reserve                                                                         9,036,102         7,820,349
- ------------------------------------------------------------------------------------------- ----------------- -----------------
Premises and equipment, net                                                                        179,627           172,643
Accrued revenue receivable                                                                          99,874            79,644
Intangible assets, net                                                                             263,022           242,594
Mortgage servicing rights, net                                                                      54,097            45,678
Real estate and other repossessed assets                                                             8,476             3,763
Bankers' acceptances                                                                                33,001            31,799
Receivable on unsettled security transactions                                                            -            56,873
Derivative contracts                                                                               452,878           130,297
Other assets                                                                                       341,175           206,953
- ------------------------------------------------------------------------------------------- ----------------- -----------------
      Total assets                                                                            $ 16,252,907      $ 14,145,660
- ------------------------------------------------------------------------------------------- ----------------- -----------------
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing demand deposits                                                           $  1,865,948      $  1,927,119
Interest-bearing deposits:
  Transaction                                                                                    5,257,295         3,947,088
  Savings                                                                                          154,015           156,339
  Time                                                                                           4,098,060         3,643,852
- ------------------------------------------------------------------------------------------- ----------------- -----------------
  Total deposits                                                                                11,375,318         9,674,398
- ------------------------------------------------------------------------------------------- ----------------- -----------------
Funds purchased and repurchase agreements                                                        1,337,911         1,555,507
Other borrowings                                                                                 1,054,298         1,015,000
Subordinated debentures                                                                            295,964           151,594
Accrued interest, taxes and expense                                                                 18,057            71,062
Bankers' acceptances                                                                                33,001            31,799
Due on unsettled security transactions                                                               8,429                 -
Derivative contracts                                                                               466,669           137,538
Other liabilities                                                                                  124,106           110,268
- ------------------------------------------------------------------------------------------- ----------------- -----------------
  Total liabilities                                                                             14,713,753        12,747,166
- ------------------------------------------------------------------------------------------- ----------------- -----------------
Shareholders' equity:
  Preferred stock                                                                                        -                12
  Common stock ($.00006 par value; 2,500,000,000 shares authorized;
      shares issued and outstanding:  2005 - 67,904,533; 2004 - 60,420,811)                              4                 4
  Capital surplus                                                                                  656,579           631,747
  Retained earnings                                                                                990,422           809,261
  Treasury stock (shares at cost: 2005 - 1,202,125; 2004 - 998,393)                                (40,040)          (30,905)
  Accumulated other comprehensive loss                                                             (67,811)          (11,625)
- ------------------------------------------------------------------------------------------- ----------------- -----------------
  Total shareholders' equity                                                                     1,539,154         1,398,494
- ------------------------------------------------------------------------------------------- ----------------- -----------------
      Total liabilities and shareholders' equity                                              $ 16,252,907      $ 14,145,660
- ------------------------------------------------------------------------------------------- ----------------- -----------------

See accompanying notes to consolidated financial statements.

 41


Consolidated Statements of Cash Flows
(In Thousands)
                                                                                      2005           2004          2003
                                                                                -------------- -------------- -------------
CASH FLOWS FROM OPERATING ACTIVITIES:
                                                                                                      
    Net income                                                                   $   201,505    $   179,023    $   158,360
    Adjustments to reconcile net income to net cash
      provided by operating activities:
         Provision for credit losses                                                  12,441         20,439         35,636
         Recovery for mortgage servicing rights impairment                            (3,915)        (1,567)       (22,923)
         Unrealized losses from derivatives                                            8,463          6,124          5,888
         Depreciation and amortization                                                44,860         47,298         64,425
         Tax benefit on exercise of stock options                                      3,583          4,609          1,325
         Stock-based compensation                                                      4,848         11,306          5,746
         Net (accretion) amortization of securities discounts and premiums            (1,159)        (3,116)         8,965
         Net gain on sale of assets                                                  (15,230)       (11,678)       (44,426)
         Contribution of stock to BOK Charitable Foundation                                -          5,561              -
         Mortgage loans originated for resale                                       (783,498)      (635,624)    (1,314,453)
         Proceeds from sale of mortgage loans held for resale                        770,115        666,549      1,420,475
         Change in trading securities                                                 (8,941)        (1,869)        (2,713)
         Change in accrued revenue receivable                                        (20,230)        (4,664)        (2,962)
         Change in other assets                                                       17,592        (48,766)       (28,442)
         Change in accrued interest, taxes and expense                               (53,005)       (14,722)        11,366
         Change in other liabilities                                                  33,102         39,218        (13,906)
- ------------------------------------------------------------------------------- -------------- -------------- -------------
Net cash provided by operating activities                                            210,531        258,121        282,361
- ------------------------------------------------------------------------------- -------------- -------------- -------------
CASH FLOWS FROM INVESTING ACTIVITIES:
    Proceeds from sales of available for sale securities                           1,537,628      2,652,554      5,089,734
    Proceeds from maturities of investment securities                                 54,336         61,583         65,504
    Proceeds from maturities of available for sale securities                        868,401      1,036,014      2,410,213
    Purchases of investment securities                                               (78,675)       (94,947)       (55,678)
    Purchases of available for sale securities                                    (2,731,763)    (3,800,015)    (8,145,655)
    Loans originated or acquired net of principal collected                       (1,287,158)      (554,128)      (741,405)
    Net payments or proceeds on derivative asset contracts                             4,290         (9,368)       (41,226)
    Net change in other investment assets                                             33,718          3,208         (3,849)
    Proceeds from disposition of assets                                               88,527         69,320         65,989
    Purchases of assets                                                              (49,199)       (34,404)       (62,926)
    Cash and cash equivalents of subsidiaries and
       branches acquired and sold, net                                               (29,093)             -          2,123
- ------------------------------------------------------------------------------- -------------- -------------- -------------
Net cash used by investing activities                                             (1,588,988)      (670,183)    (1,417,176)
- ------------------------------------------------------------------------------- -------------- -------------- -------------
CASH FLOWS FROM FINANCING ACTIVITIES:
    Net change in demand deposits, transaction
      deposits and savings accounts                                                1,246,713        185,409        984,603
    Net change in certificates of deposit                                            457,412        269,126        107,522
    Net change in other borrowings                                                   (83,299)       (55,811)        65,610
    Change in amount receivable (due) on unsettled security transactions              65,302        (65,132)        74,160
    Pay down of revolving line of credit                                             (95,000)             -        (95,000)
    Issuance of preferred, common and treasury stock, net                              7,032          7,132          4,627
    Issuance of subordinated debenture                                               147,855              -              -
    Net change in derivative margin accounts                                        (167,137)       (50,202)       (31,763)
    Net payments or proceeds on derivative liability contracts                        (9,407)        10,259         45,538
    Repurchase of common stock                                                        (2,439)             -              -
    Dividends paid                                                                   (20,344)        (1,540)          (785)
- ------------------------------------------------------------------------------- -------------- -------------- -------------
Net cash provided by financing activities                                          1,546,688        299,241      1,154,512
- ------------------------------------------------------------------------------- -------------- -------------- -------------
Net increase (decrease) in cash and cash equivalents                                 168,231       (112,821)        19,697
Cash and cash equivalents at beginning of period                                     531,091        643,912        624,215
- ------------------------------------------------------------------------------- -------------- -------------- -------------
CASH AND CASH EQUIVALENTS AT END OF PERIOD                                       $   699,322    $   531,091    $   643,912
- ------------------------------------------------------------------------------- -------------- -------------- -------------
CASH PAID FOR INTEREST                                                           $   312,200    $   192,187    $   176,225
- ------------------------------------------------------------------------------- -------------- -------------- -------------
CASH PAID FOR TAXES                                                                  104,543         95,282         81,596
- ------------------------------------------------------------------------------- -------------- -------------- -------------
NET LOANS TRANSFERRED TO REPOSSESSED REAL ESTATE                                      11,633          6,013          6,378
- ------------------------------------------------------------------------------- -------------- -------------- -------------
PAYMENT OF DIVIDENDS IN COMMON STOCK                                                       -         65,899         58,300
- ------------------------------------------------------------------------------- -------------- -------------- -------------


See accompanying notes to consolidated financial statements.

 42

Consolidated Statements of Changes in Shareholders' Equity
(In Thousands)

                                                                       Preferred Stock                  Common Stock
                                                                ------------------------------  ------------------------------
                                                                    Shares         Amount           Shares         Amount
- ------------------------------------------------------------------------------------------------------------------------------
                                                                                                    
December 31, 2002                                                   250,000          $25             55,750           $3
Comprehensive income:
   Net income                                                             -            -                  -            -
   Other comprehensive loss, net of tax                                   -            -                  -            -
    Comprehensive income
Exercise of stock options                                                 -            -                603            -
Tax benefit on exercise of stock options                                  -            -                  -            -
Stock-based compensation                                                  -            -                  -            -
Cash dividends on preferred stock                                         -            -                  -            -
Redeem nonvoting preferred units                                          -          (13)                 -            -
Dividends paid in shares of common stock:
   Preferred stock                                                        -            -                 23            -
   Common stock                                                           -            -              1,680            1
- ------------------------------------------------------------------------------------------------------------------------------
December 31, 2003                                                   250,000           12             58,056            4
Comprehensive income:
   Net income                                                             -            -                  -            -
   Other comprehensive loss, net of tax                                   -            -                  -            -
     Comprehensive income
Exercise of stock options                                                 -            -                616            -
Conversion of preferred stock to common                                 (25)           -                  -            -
Tax benefit on exercise of stock options                                  -            -                  -            -
Stock-based compensation                                                  -            -                  -            -
Cash dividends on preferred stock                                         -            -                  -            -
Dividends paid in shares of common stock                                  -            -              1,749            -
- ------------------------------------------------------------------------------------------------------------------------------
December 31, 2004                                                   249,975           12             60,421            4
Comprehensive income:
   Net income                                                             -            -                  -            -
   Other comprehensive loss, net of tax                                   -            -                  -            -
    Comprehensive income
Treasury stock purchase                                                   -            -                  -            -
Exercise of stock options                                                 -            -                563            -
Conversion of preferred stock to common                            (249,975)         (12)             6,921            -
Tax benefit on exercise of stock options                                  -            -                  -            -
Stock-based compensation                                                  -            -                  -            -
Cash dividends on:
    Preferred stock                                                       -            -                  -            -
    Common stock                                                          -            -                  -            -
- ------------------------------------------------------------------------------------------------------------------------------
December 31, 2005                                                         -         $  -             67,905           $4
- ------------------------------------------------------------------------------------------------------------------------------


See accompanying notes to consolidated financial statements.

 43


    Accumulated
       Other
   Comprehensive         Capital           Retained                Treasury Stock
                                                         ------------------------------------
   Income (Loss)         Surplus           Earnings           Shares            Amount            Total
- -------------------- ----------------- ----------------- ----------------- ------------------ ---------------
                                                                                 
   $  43,088              $475,054          $598,777            683            $(17,421)        $1,099,526

           -                     -           158,360              -                   -            158,360
     (34,629)                    -                 -              -                   -            (34,629)
                                                                                              ---------------
                                                                                                   123,731
                                                                                              ---------------
           -                10,953                 -            145              (6,326)             4,627
           -                 1,325                 -              -                   -              1,325
           -                   219                 -              -                   -                219
           -                     -              (750)             -                   -               (750)
           -                     -                 -              -                   -                (13)

           -                   750              (750)             -                   -                  -
           -                58,293           (57,585)            21                (744)               (35)
- -------------------- ----------------- ----------------- ----------------- ------------------ ---------------
       8,459               546,594           698,052            849             (24,491)         1,228,630

           -                     -           179,023              -                   -            179,023
     (20,084)                    -                 -              -                   -            (20,084)
                                                                                              ---------------
                                                                                                   158,939
                                                                                              ---------------
           -                12,507                 -            122              (5,375)             7,132
           -                     -                 -              -                   -                  -
           -                 4,609                 -              -                   -              4,609
           -                 1,099                 -              -                   -              1,099
           -                     -            (1,875)             -                   -             (1,875)
           -                66,938           (65,939)            27              (1,039)               (40)
- -------------------- ----------------- ----------------- ----------------- ------------------ ---------------
     (11,625)              631,747           809,261            998             (30,905)         1,398,494

           -                     -           201,505              -                   -            201,505
     (56,186)                    -                 -              -                   -            (56,186)
                                                                                              ---------------
                                                                                                   145,319
                                                                                              ---------------
           -                     -                 -             60              (2,439)            (2,439)
           -                13,728                 -            144              (6,696)             7,032
           -                    12                 -              -                   -                  -
           -                 3,583                 -              -                   -              3,583
           -                 7,509                 -              -                   -              7,509

           -                     -              (375)             -                   -               (375)
           -                     -           (19,969)             -                   -            (19,969)
- -------------------- ----------------- ----------------- ----------------- ------------------ ---------------
    $(67,811)             $656,579          $990,422          1,202           $ (40,040)       $ 1,539,154
- -------------------- ----------------- ----------------- ----------------- ------------------ ---------------


 44

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1) SIGNIFICANT ACCOUNTING POLICIES

BASIS OF PRESENTATION

The  Consolidated  Financial  Statements  of  BOK  Financial  Corporation  ("BOK
Financial" or "the  Company") have been prepared in conformity  with  accounting
principles generally accepted in the United States,  including general practices
of the banking  industry.  The  consolidated  financial  statements  include the
accounts of BOK Financial and its  subsidiaries,  principally  Bank of Oklahoma,
N.A. and its subsidiaries ("BOk"), Bank of Texas, N.A., Bank of Arkansas,  N.A.,
Bank of Albuquerque, N.A., Colorado State Bank and Trust, N.A., Bank of Arizona,
N.A. and BOSC, Inc.

During 2005, the Company adopted FASB Interpretation No. 39, "Offsetting Amounts
Related to Certain  Contracts" ("FIN 39"). FIN 39 permits  reporting  derivative
assets and liabilities on a net by counterparty basis provided certain specified
criteria are met. These criteria require written  bilateral  netting  agreements
between the Company and each of its  counterparties  that create a single  legal
claim or  obligation  to pay or  receive  the net  amount in  settlement  of the
individual  derivative  contracts.  Amounts  reported for derivative  assets and
liabilities in prior periods have been reclassified for consistent presentation.

The   consolidated   financial   statements   would  also  include  the  assets,
liabilities,  non-controlling  interests  and results of  operations of variable
interest  entities  ("VIEs")  when BOK Financial is determined to be the primary
beneficiary.   Variable   interest   entities  are  generally  defined  in  FASB
Interpretation  No. 46R,  "Consolidation  of  Variable  Interest  Entities,"  as
entities that either do not have sufficient  equity to finance their  activities
without support from other parties or whose equity  investors lack a controlling
financial interest. BOK Financial is not the primary beneficiary in any VIE that
would be significant to its operations.

NATURE OF OPERATIONS

BOK  Financial,  through its  subsidiaries,  provides a wide range of  financial
services to commercial and industrial  customers,  other financial  institutions
and  consumers  throughout  Oklahoma;  Northwest  Arkansas;  Dallas and Houston,
Texas;  Albuquerque,  New Mexico; Denver, Colorado, and Phoenix,  Arizona. These
services include  depository and cash  management;  lending and lease financing;
mortgage banking; securities brokerage,  trading and underwriting;  and personal
and corporate trust.

USE OF ESTIMATES

Preparation  of  BOK  Financial's  consolidated  financial  statements  requires
management  to make  estimates of future  economic  activities,  including  loan
collectibility,  prepayments  and  cash  flows  from  customer  accounts.  These
estimates  are based  upon  current  conditions  and  information  available  to
management. Actual results may differ significantly from these estimates.

ACQUISITIONS

Assets and liabilities acquired,  including identifiable  intangible assets, are
recorded at fair values on the acquisition dates. The Consolidated Statements of
Earnings include the results of operations from the dates of acquisition.

INTANGIBLE ASSETS

Intangible  assets,  which  generally  result from  business  combinations,  are
accounted  for  under  the  provisions  of  Statement  of  Financial  Accounting
Standards  No.  142,  "Goodwill  and  Other  Intangible  Assets,"  and No.  147,
"Acquisitions of Certain Financial Institutions."

Intangible  assets with indefinite  lives,  such as goodwill,  are evaluated for
each  of  BOK  Financial's  business  units  for  impairment  annually  or  more
frequently  if  conditions  indicate  impairment.  The  evaluation  of  possible
impairment  of  intangible  assets  involves  significant  judgment  based  upon
short-term and long-term projections of future performance.

The fair value of BOK Financial's  business units is estimated by the discounted
future earnings  method.  Income growth is projected over a five-year period for
each unit and a terminal  value is computed.  This  projected  income  stream is
converted to current fair value by using a discount rate that reflects a rate of
return required by a willing buyer.

Core deposit intangible assets are amortized using accelerated  methods over the
estimated lives of the acquired deposits. These assets generally have a weighted
average life of 5 years. Other intangible assets are amortized using accelerated
or straight-line  methods,  as appropriate,  over the estimated benefit periods.
These  periods  range  from 5 years to 20  years.  The net book  values  of core
deposit intangible assets are evaluated for impairment when economic  conditions
indicate impairment may exist.

 45

CASH EQUIVALENTS

Due from banks,  funds sold (generally  federal funds sold for one-day  periods)
and  resell  agreements  (which  generally  mature  within  one to 30 days)  are
considered cash equivalents.

SECURITIES

Securities are identified as trading, investment (held to maturity) or available
for sale at the time of purchase based upon the intent of management,  liquidity
and capital  requirements,  regulatory  limitations and other relevant  factors.
Trading securities, which are acquired for profit through resale, are carried at
market  value with  unrealized  gains and  losses  included  in  current  period
earnings.  Investment securities are carried at amortized cost.  Amortization is
computed by methods that approximate  level yield and is adjusted for changes in
prepayment  estimates.  Investment  securities  may be  sold or  transferred  to
trading or available for sale  classification  in certain limited  circumstances
specified in generally accepted accounting principles.  Securities identified as
available  for sale are carried at fair value.  Unrealized  gains and losses are
recorded,  net of deferred  income taxes,  as  accumulated  other  comprehensive
income (loss) in  shareholders'  equity.  Unrealized  losses on  securities  are
evaluated  to determine if the losses are  temporary  based on various  factors,
including the cause of the loss,  prospects for recovery and management's intent
and ability to hold the security until the fair value exceeds amortized cost. An
impairment  charge is recorded  against earnings if the loss is determined to be
other than temporary. Realized gains and losses on sales of securities are based
upon the  amortized  cost of the  specific  security  sold.  Available  for sale
securities are separately identified as pledged to creditors if the creditor has
the right to sell or repledge the collateral.

The purchase or sale of securities  is  recognized on a trade date basis.  A net
receivable or payable is recognized for subsequent transaction  settlement.  BOK
Financial will periodically commit to purchase  to-be-announced  mortgage-backed
securities.  These  commitments are carried at fair value if they are considered
derivative  contracts.  These  commitments  are not reflected in BOK Financial's
balance sheet until  settlement  date if they meet specific  criteria  exempting
them from the definition of derivative contracts.

DERIVATIVE INSTRUMENTS

Derivative  instruments  may be used by the Company as part of its interest rate
risk  management  programs  or may  be  offered  to  customers.  All  derivative
instruments  are  carried  at fair  value.  The  determination  of fair value of
derivative  instruments  considers changes in interest rates,  commodity prices,
foreign  exchange  rates and  counterparty  credit  ratings,  when  appropriate.
Changes in fair value are generally reported in income as they occur.

Derivative  instruments  used to manage interest rate risk consist  primarily of
interest rate swaps.  These  contracts  modify the interest income or expense of
certain  assets  or   liabilities.   Amounts   receivable  from  or  payable  to
counterparties  are  reported  in interest  income or expense  using the accrual
method.  Changes in fair value of  interest  rate  swaps are  reported  in other
operating revenue - gains or losses on derivatives.

In certain  circumstances,  interest  rate swaps may be designated as fair value
hedges and may qualify for hedge accounting. In these circumstances,  changes in
the fair value of the hedged asset or  liability  that are  attributable  to the
hedged risk are also  reported in other  operating  revenue - gains or losses on
derivatives,  and may partially or completely offset the change in fair value of
the interest rate swap.  Fair value hedges are considered to be effective if the
cumulative fair value  adjustment of the interest rate swap is within a range of
80% to 120% of the change in fair value of the hedged asset or liability.

Interest  rate swaps may be  designated  as cash flow  hedges of  variable  rate
assets or liabilities, or of anticipated transactions. Changes in the fair value
of  interest  rate  swaps  designated  as  cash  flow  hedges  are  recorded  in
accumulated  other  comprehensive  income to the extent they are effective.  The
amount recorded in other comprehensive income is reclassified to earnings in the
same periods as the hedged cash flows impact earnings.  The ineffective  portion
of changes in fair value is reported in current earnings.

If a derivative  instrument  that had been  designated  as a fair value hedge is
terminated  or if the hedge  designation  is  removed  or deemed to no longer be
effective,  the difference between the hedged item's carrying value and its face
amount is  recognized  into income over the  remaining  original  hedge  period.
Similarly,  if a derivative  instrument  that had been designated as a cash flow
hedge is  terminated  or if the hedge  designation  is  removed  or deemed to no
longer

 46

be effective,  the amount remaining in accumulated other comprehensive income is
reclassified to earnings in the same period as the hedged item.

BOK Financial  also enters into mortgage loan  commitments  that are  considered
derivative instruments. Forward sales contracts are used to hedge these mortgage
loan  commitments  as well as  mortgage  loans  held  for  sale.  Mortgage  loan
commitments  are carried at fair value based upon quoted  prices,  excluding the
value of loan servicing rights or other ancillary values.  Changes in fair value
of the mortgage loan  commitments  and forward  sales  contracts are reported in
other operating revenue - mortgage banking revenue.

Derivative  contracts  are also offered to customers to assist in hedging  their
risks of  adverse  changes  in  commodity  prices,  interest  rates and  foreign
exchange rates.  BOK Financial  serves as an intermediary  between its customers
and the markets. Each contract between BOK Financial and its customers is offset
by a contract between BOK Financial and various counterparties.  These contracts
are carried at fair value.  Compensation  for credit risk and  reimbursement  of
administrative  costs are recognized over the life of the contracts and included
in other operating revenue - brokerage and trading revenue.

LOANS

Loans  are  either  secured  or  unsecured  based  on the  type of loan  and the
financial  condition of the borrower.  Repayment is generally expected from cash
flow or proceeds from the sale of selected assets of the borrower. BOK Financial
is exposed to risk of loss on loans due to the  borrower's  difficulties,  which
may arise from any number of factors,  including  problems within the respective
industry or local economic  conditions.  Access to  collateral,  in the event of
borrower default,  is reasonably assured through adherence to applicable lending
laws and through sound lending standards and credit review procedures.

Interest is accrued at the  applicable  interest  rate on the  principal  amount
outstanding.  Loans are placed on  nonaccrual  status  when,  in the  opinion of
management,  full  collection of principal or interest is  uncertain,  generally
when the  collection  of  principal  or  interest  is 90 days or more  past due.
Interest previously accrued but not collected is charged against interest income
when the loan is placed on nonaccrual  status.  Payments on nonaccrual loans are
applied to principal or reported as interest  income,  according to management's
judgment as to the collectibility of principal.

Loan origination and commitment fees and direct loan acquisition and origination
costs,  when  significant,  are deferred and amortized as an adjustment to yield
over the life of the loan or over the commitment period, as applicable.

Mortgage  loans  held for sale are  carried  at the lower of  aggregate  cost or
market value.  Mortgage loans held for sale that are designated as hedged assets
are carried at fair value based on sales  commitments or market quotes.  Changes
in fair value after the date of designation  of an effective  hedge are recorded
in other operating revenue - mortgage banking revenue.

RESERVE FOR LOAN LOSSES AND OFF-BALANCE SHEET CREDIT LOSSES

Reserves for loan losses and  off-balance  sheet  credit  losses are assessed by
management, based upon an ongoing quarterly evaluation of the probable estimated
losses  inherent  in  the  portfolio,  and  includes  probable  losses  on  both
outstanding  loans and unused  commitments  to provide  financing.  A consistent
methodology  has been  developed  that  includes  reserves  assigned to specific
criticized  loans,  general reserves that are based upon  statistical  migration
analyses for each category of loans,  and a nonspecific  allowance that is based
upon an analysis of current economic conditions, loan concentrations,  portfolio
growth and other relevant factors.  The reserve for loan losses related to loans
that are  identified  for  evaluation in accordance  with Statement of Financial
Accounting Standards No. 114, "Accounting by Creditors for Impairment of a Loan"
("FAS  114"),  is based on  discounted  cash  flows  using  the  loan's  initial
effective  interest  rate  or the  fair  value  of the  collateral  for  certain
collateral  dependent loans. Loans are considered to be impaired when it becomes
probable that BOK Financial  will be unable to collect all amounts due according
to the contractual  terms of the loan agreement.  This is substantially the same
criteria used to determine  when a loan should be placed on  nonaccrual  status.
This  evaluation is  inherently  subjective  as it requires  material  estimates
including the amounts and timing of future cash flows expected to be received on
impaired loans that may be susceptible to significant change.

In accordance  with the  provisions of FAS 114,  management  has excluded  small
balance,  homogeneous loans from the impairment evaluation specified in FAS 114.
Such loans include 1-4 family  mortgage  loans,  consumer  loans and  commercial
loans with committed  amounts less than $1 million.  The adequacy of the reserve
for loan losses applicable to these loans is evaluated in accordance with gen-

 47

erally accepted accounting  principles and standards  established by the banking
regulatory authorities and adopted as policy by BOK Financial.

A provision for credit losses is charged against  earnings in amounts  necessary
to maintain  adequate  reserves for loan and  off-balance  sheet credit  losses.
Loans are charged off when the loan  balance or a portion of the loan balance is
no longer covered by the paying  capacity of the borrower based on an evaluation
of available cash resources and collateral value. Loans are evaluated  quarterly
and  charge-offs  are  taken in the  quarter  in which  the loss is  identified.
Additionally, all unsecured or under-secured loans that are past due by 180 days
or more are charged off within 30 days.  Recoveries of loans previously  charged
off are added to the reserve.

TRANSFERS OF FINANCIAL ASSETS

BOK  Financial  transfers  pools of  financial  assets  as part of its  mortgage
banking  activities and periodically may transfer other financial assets.  These
transfers  are  recorded  as sales for  financial  reporting  purposes  when the
criteria for surrender of control specified in Statement of Financial Accounting
Standards,  No. 140 "Accounting for Transfers and Servicing of Financial  Assets
and  Extinguishment  of Liabilities" are met. BOK Financial may retain the right
to service the assets and a residual  interest in excess cash flows generated by
the assets and may incur a recourse obligation. The carrying value of the assets
sold is allocated  between the financial  components  sold and retained based on
relative fair values.  The fair value of the retained  assets is determined by a
discounting  of expected  future net cash to be received  using  assumed  market
interest  rates for these  instruments.  Residual  interests are carried at fair
value.  Changes in fair  values are  recorded  in income.  Servicing  rights are
carried at the lower of amortized cost or fair value.  A valuation  allowance is
provided when amortized cost of servicing rights exceeds fair value.

REAL ESTATE AND OTHER REPOSSESSED ASSETS

Real estate and other repossessed assets are assets acquired in partial or total
forgiveness  of loans.  These assets are carried at the lower of cost,  which is
determined by fair value at date of foreclosure,  or current fair value.  Income
generated by these assets is recognized as received,  and operating expenses are
recognized as incurred.

PREMISES AND EQUIPMENT

Premises and equipment are carried at cost including capitalized interest,  when
appropriate,  less accumulated  depreciation and amortization.  Depreciation and
amortization  are computed on a  straight-line  basis over the estimated  useful
lives of the assets  or, for  leasehold  improvements,  over the  shorter of the
estimated useful lives or remaining lease terms. Useful lives range from 5 years
to 40 years for buildings and improvements,  3 years to 7 years for software and
3 years to 10 years for furniture and equipment.  Repair and  maintenance  costs
are charged to expense as incurred.

Rent expense for leased  premises is recognized as incurred over the lease term.
The effects of rent holidays, significant rent escalations and other adjustments
to rent payments are recognized over the lease term.

MORTGAGE SERVICING RIGHTS

Capitalized mortgage servicing rights are carried at the lower of amortized cost
or fair value.  Amortization  is determined in proportion to the projected  cash
flows over the  estimated  lives of the  servicing  portfolios.  The actual cash
flows are dependent  upon the  prepayment  of the mortgage  loans and may differ
significantly from the estimates.

There is no active market for trading in mortgage  servicing rights. A cash flow
model is used to determine fair value.  Key assumptions and estimates  including
projected  prepayment  speeds and assumed  servicing  costs,  earnings on escrow
deposits,  ancillary  income and discount  rates used by this model are based on
current  market  sources.  A  separate  third  party  model is used to  estimate
prepayment  speeds based on interest rates,  housing  turnover rates,  estimated
loan  curtailment,   anticipated   defaults  and  other  relevant  factors.  The
prepayment  model is updated  daily for changes in market  conditions.  At least
annually, we request estimates of fair value from outside sources to corroborate
the results of the valuation model.

Permanent  impairment of mortgage  servicing  rights is evaluated  quarterly.  A
strata is  considered  to be  permanently  impaired  if the fair  value does not
exceed  amortized  cost after  assuming a 300 basis  point  increase in mortgage
interest  rates.  The amortized  cost of the asset is reduced to the  calculated
fair value through a charge against the valuation allowance.

 48

Originated  mortgage  servicing rights are recognized when either mortgage loans
are originated pursuant to an existing plan for sale or, if no such plan exists,
when the mortgage  loans are sold.  The fair value of the  originated  servicing
rights is  determined  at closing  based upon  relative  fair  value.  Purchased
mortgage servicing rights are recorded at cost.

FEDERAL AND STATE INCOME TAXES

BOK  Financial  and  its  subsidiaries  file   consolidated  tax  returns.   The
subsidiaries  provide for income  taxes on a separate  return basis and remit to
BOK Financial amounts determined to be currently payable.

Current  income tax  expense is based on an  effective  tax rate that  considers
statutory federal and state income tax rates and permanent  differences  between
income and expense  recognition for financial reporting and income tax purposes.
The amount of current  income tax  expense  recognized  in any period may differ
from amounts reported to taxing authorities.

BOK  Financial  has a tax  contingency  reserve,  which is  included  in accrued
current income taxes payable, for the uncertain portion of recorded tax benefits
and related interest. These uncertainties result from the application of complex
tax laws,  rules,  regulations  and  interpretations,  primarily in state taxing
jurisdictions.  The  adequacy of this reserve is assessed  quarterly  and may be
adjusted  through current income tax expense in future periods based on changing
facts and  circumstances,  completion of examinations  by taxing  authorities or
expiration of a statute of limitations.

Deferred tax assets and  liabilities  are  determined  based upon the difference
between the values of the assets and  liabilities  as reflected in the financial
statements and their related tax basis using enacted tax rates in effect for the
year in which the  differences  are  expected to be  recovered  or  settled.  As
changes in tax law or rates are enacted, deferred tax assets and liabilities are
adjusted  through the  provision  for income  taxes.  A valuation  allowance  is
provided  when it is more  likely  than  not that  some  portion  or the  entire
deferred tax asset will not be realized.

EMPLOYEE BENEFIT PLANS

BOK Financial  sponsors a defined  benefit cash balance  pension plan  ("Pension
Plan"),  qualified profit sharing plans ("Thrift Plans") and employee healthcare
plans.  Pension  Plan  costs,  which are based upon  actuarial  computations  of
current costs, are expensed  annually.  Unrecognized  prior service cost and net
gains or losses are  amortized on a  straight-line  basis over the lesser of the
average  remaining  service periods of the  participants  or 10 years.  Employer
contributions  to the Pension Plan are in  accordance  with  Federal  income tax
regulations.

Employer  contributions to the Thrift Plans, which match employee  contributions
subject to percentage and years of service  limits,  are expensed when incurred.
BOK  Financial  recognizes  the expense of health  care  benefits on the accrual
method.

STOCK COMPENSATION PLANS

BOK  Financial  has adopted  the expense  recognition  provisions  of  Financial
Accounting  Standards  Board  Statement  No. 123,  "Accounting  for  Stock-Based
Compensation"  ("FAS 123"),  as amended by  Statement  of  Financial  Accounting
Standards No. 148,  "Accounting  for  Stock-Based  Compensation - Transition and
Disclosure" ("FAS 148").

Grant date fair  value of stock  options  is based on the  Black-Scholes  option
pricing model.  Stock options  generally have graded vesting over 7 years.  Each
tranche is  considered a separate  award for  valuation  and  compensation  cost
recognition.  Grant date fair value of non-vested shares is based on the current
market value of BOK Financial  common stock.  Non-vested  shares cliff vest in 5
years.

Compensation  cost is recognized as expense over the vesting period.  Expense is
adjusted for  forfeitures  as they occur.  Stock-based  compensation  awarded to
certain  officers has  performance  conditions  that affect the number of awards
granted.  Compensation  cost is adjusted  based on the  probable  outcome of the
performance conditions.

Certain executive  officers may defer the recognition of income from stock-based
compensation  for income tax purposes and to diversify the deferred  income into
alternative  investments.  Stock-based compensation granted to these officers is
considered  liability awards.  Changes in the fair value of liability awards are
recognized as compensation expense in the period of the change.

OTHER OPERATING REVENUE

Fees and commissions  revenue is recognized at the time the related services are
provided or products  are sold and may be accrued when  necessary.  Accrued fees
and commissions are reversed against revenue if amounts are subsequently  deemed
to be uncollectible.

 49

EFFECT OF PENDING STATEMENTS OF FINANCIAL ACCOUNTING STANDARDS

FINANCIAL ACCOUNTING STANDARDS BOARD

STATEMENT OF FINANCIAL ACCOUNTING STANDARDS 123R,
"SHARE-BASED PAYMENTS" ("FAS 123R")

FAS 123R requires  companies to recognize in income  statements  the  grant-date
fair  value of stock  options  and  other  equity-based  compensation  issued to
employees. Previously, FAS 123 recommended, but did not require income statement
recognition  of the  fair  value of  equity-based  compensation.  FAS 123R  also
requires that share-based payments that meet specified criteria be classified as
liability awards and carried at current fair value.  Fair value is determined at
each balance sheet date until the award is settled.  Share-payments that will be
settled in equity  instruments  are  measured at  grant-date  fair value and not
re-measured  for  subsequent  changes in fair value.  FAS 123R was effective for
annual periods beginning on or after June 15, 2005.

We previously adopted the preferred income statement  recognition methods of the
original  FAS 123.  Management  does not expect  FAS 123R to have a  significant
effect on its financial statements.

FSP FAS 115-1 AND FAS 124-1  THE MEANING OF OTHER-THAN-TEMPORARY
IMPAIRMENT AND ITS APPLICATION TO CERTAIN INVESTMENTS ("FSP 115-1")

FSP 115-1  addressed  the  determination  as to when an investment is considered
impaired, whether that impairment is other-than-temporary and the measurement of
an impairment loss. It also addressed  accounting  considerations  subsequent to
the  recognition of an  other-than-temporary  impairment and  disclosures  about
unrealized losses that have not been recognized.

An  investment  is  considered  impaired  when its fair value is less than cost.
Determination   of  when  an   unrealized   loss  must  be   recognized   as  an
other-than-temporary  impairment is based on an assessment of factors, including
the nature of the asset, the financial  condition and near-term prospects of the
issuer,  whether  the asset can be prepaid  by the  issuer in a manner  that the
investor  will not recover its  investment,  the  severity  and  duration of the
impairment  and the  investor's  ability  and intent to hold the asset until the
fair value recovers.

FSP 115-1 was effective for reporting periods beginning after December 15, 2005.
Guidance provided by FSP 115-1 had previously been issued in other authoritative
literature, including SEC Staff Accounting Bulletin No. 59, and we do not expect
a significant impact on future financial statements.

(2) ACQUISITIONS

Effective April 6, 2005, BOK Financial  acquired all of the  outstanding  common
stock of Valley Commerce  Bancorp,  Ltd.  ("VCB") for $32.0 million in cash. VCB
and its wholly-owned subsidiary,  Valley Commerce Bank, had total assets of $143
million,  including  loans of $93  million,  total  deposits of $110 million and
total  shareholders'  equity of $12.7  million.  As of August 15,  2005,  Valley
Commerce  Bank  was  renamed  Bank  of  Arizona,  N.A.  The VCB  acquisition  is
consistent with the Company's strategy to expand into high-growth markets.

On September  10, 2003,  BOK  Financial  paid $77.9  million in cash for all the
outstanding  stock of Colorado  Funding  Company and its Colorado State Bank and
Trust subsidiary.

These  transactions  were  accounted for by the purchase  method of  accounting.
Aggregate  allocation  of the purchase  price to the net assets  acquired was as
follows (in thousands):

                                     2005          2003
                                 ------------ -------------
 Cash and cash equivalents        $    2,921   $   80,051
 Securities                           35,355       14,507
 Loans                                92,821      222,530
 Less reserve for loan losses          1,072        2,282
                                 ------------ -------------
 Loans, net                           91,749      220,248
 Identifiable intangible assets        4,380       18,770
 Other assets                         11,334       20,809
                                 ------------ -------------
 Total assets acquired               145,739      354,385
 Deposits                            110,217      301,439
 Other borrowings                     18,155        5,098
 Other liabilities                     2,003       11,951
                                 ------------ -------------
 Net assets acquired                  15,364       35,897
 Less purchase price                  32,014       77,928
                                 ------------ -------------
 Goodwill                         $   16,650   $   42,031
                                 ------------ -------------

The results of operations of these  acquisitions would not have been significant
to the Company's  consolidated  results  during the  pre-acquisition  periods of
2005, 2004 and 2003.  None of the intangible  assets acquired are deductible for
tax purposes.

 50

(3) SECURITIES

INVESTMENT SECURITIES

The amortized  cost and fair values of investment  securities are as follows (in
thousands):


                                                                       December 31,
                               ----------------------------------------------------------------------------------------------
                                                    2005                                           2004
                               ----------------------------------------------- ----------------------------------------------
                                Amortized     Fair       Gross Unrealized       Amortized     Fair       Gross Unrealized
                                                      ------------------------                        -----------------------
                                   Cost       Value       Gain       Loss         Cost       Value       Gain       Loss
                               ----------------------------------------------------------------------------------------------
                                                                                           
 U.S. Treasury                   $  1,994    $  1,976    $    -     $   (18)     $      -   $      -     $    -    $     -
 Municipal and other tax-exempt   240,359     238,649       903      (2,613)      216,986    218,465      2,501     (1,022)
 Mortgage-backed U.S. agency
    securities                          -           -         -           -         1,287      1,336         49          -
 Other debt securities              2,772       2,781         9           -         2,821      2,835         14          -
 ----------------------------------------------------------------------------------------------------------------------------
       Total                     $245,125    $243,406    $  912     $(2,631)     $221,094   $222,636     $2,564    $(1,022)
 ----------------------------------------------------------------------------------------------------------------------------


The  amortized  cost and fair values of  investment  securities  at December 31,
2005, by contractual  maturity,  are as shown in the following table (dollars in
thousands):


                                                                                                                   Weighted
                                            Less than      One to        Five to         Over                      Average
                                            One Year     Five Years     Ten Years     Ten Years       Total       Maturity(2)
                                           -----------------------------------------------------------------------------------
U.S. Treasury:
                                                                                                   
  Amortized cost                           $       -    $   1,994      $       -     $       -     $   1,994         1.17
  Fair value                                       -        1,976              -             -         1,976
  Nominal yield                                    -         3.64              -             -          3.64
Municipal and other tax-exempt:
  Amortized cost                           $  57,284    $  146,544       $26,900       $9,631      $  240,359        3.07
  Fair value                                  57,223       145,303        26,647         9,476        238,649
  Nominal yield(1)                              4.79          5.03          5.61          6.26           5.11
Other debt securities:
  Amortized cost                           $   1,985    $       99     $     675     $      13     $    2,772        2.34
  Fair value                                   1,985           103           680            13          2,781
  Nominal yield                                 4.15          7.00          5.31             -           4.51
                                           -----------------------------------------------------------------------------------
Total fixed maturity securities:
  Amortized cost                           $  56,269    $  148,637     $  27,575     $   9,644     $  245,125        3.05
  Fair value                                  59,208       147,382        27,327         9,489        243,406
  Nominal yield                                 4.77          5.01          5.60          6.26           5.09
                                           -------------------------------------------------------
Total investment securities:
  Amortized cost                                                                                   $  245,125
  Fair value                                                                                          243,406
  Nominal yield                                                                                          5.09
                                                                                                   -------------


(1) Calculated on a taxable equivalent basis using a 39% effective tax rate.
(2) Expected maturities may differ from contractual maturities, because
    borrowers may have the right to call or prepay obligations with or without
    penalty.

 51

AVAILABLE FOR SALE SECURITIES

The  amortized  cost and fair  value of  available  for sale  securities  are as
follows (in thousands):


                                                                        December 31,
                                ----------------------------------------------------------------------------------------------
                                                    2005                                            2004
                                ---------------------------------------------- -----------------------------------------------
                                 Amortized      Fair      Gross Unrealized      Amortized      Fair       Gross Unrealized
                                                        ----------------------                          ----------------------
                                    Cost       Value       Gain      Loss          Cost        Value       Gain      Loss
                                ----------------------------------------------------------------------------------------------
                                                                                            
U.S. Treasury                    $    16,037 $   15,827  $      -   $   (210)   $    27,119 $   27,062   $     31   $    (88)
Municipal and other tax-exempt        17,153     17,078         3        (78)           414        404          1        (11)
Mortgage-backed securities:
    U. S. agencies                 3,507,047  3,424,356     1,416    (84,107)     3,067,611  3,052,375      8,079    (23,315)
    Other                          1,277,161  1,250,701       201    (26,661)     1,423,613  1,418,770      2,378     (7,221)
- ------------------------------------------------------------------------------------------------------------------------------
Total mortgage-backed securities   4,784,208  4,675,057     1,617   (110,768)     4,491,224  4,471,145     10,457    (30,536)
- ------------------------------------------------------------------------------ -----------------------------------------------
Other debt securities                    124        124         1         (1)           515        528         13          -
Equity securities and mutual funds   108,914    113,489     4,575          -         90,343     94,051      3,708          -
- ------------------------------------------------------------------------------------------------------------------------------
   Total                         $ 4,926,436 $4,821,575  $  6,196  $(111,057)   $ 4,609,615 $4,593,190   $ 14,210   $(30,635)
- ------------------------------------------------------------------------------------------------------------------------------



The amortized cost and fair values of available for sale  securities at December
31, 2005, by contractual maturity,  are as shown in the following table (dollars
in thousands):


                                                                                                                     Weighted
                                             Less than       One to       Five to         Over                       Average
                                              One Year     Five Years    Ten Years     Ten Years        Total       Maturity(5)
                                            ------------------------------------------------------------------------------------
U.S. Treasuries:
                                                                                                      
   Amortized cost                           $   9,987     $    6,050    $        -    $       -     $    16,037         1.08
   Fair value                                   9,847          5,980             -            -          15,827
   Nominal yield                                 2.78           3.50             -            -            3.05
Municipal and other tax-exempt:
   Amortized cost                           $     100     $        -    $   12,005    $   5,048     $    17,153         9.40
   Fair value                                     100              -        11,960        5,018          17,078
   Nominal yield(1)                              4.67              -          3.80         3.17            3.80
Other debt securities:
   Amortized cost                           $      65     $       26    $       33    $       -     $       124         2.91
   Fair value                                      66             25            33            -             124
   Nominal yield(1)                              6.26           6.18          7.60            -            6.60
                                            ------------------------------------------------------------------------------------
Total fixed maturity securities:
   Amortized cost                           $  10,152     $    6,076    $   12,038    $   5,048     $    33,314         5.37
   Fair value                                  10,013          6,005        11,993        5,018          33,029
   Nominal yield                                 2.80           3.51          3.81         3.17            3.45
                                            -------------------------------------------------------
Mortgage-backed securities:
   Amortized cost                                                                                   $ 4,784,208           (2)
   Fair value                                                                                         4,675,057
   Nominal yield (4)                                                                                       4.45
                                                                                                    ---------------
Equity securities and mutual funds:
   Amortized cost                                                                                   $   108,914           (3)
   Fair value                                                                                           113,489
   Nominal yield                                                                                           2.99
                                                                                                    ---------------
Total available-for-sale securities:
   Amortized cost                                                                                   $ 4,926,436
   Fair value                                                                                         4,821,575
   Nominal yield                                                                                           4.41
                                                                                                    ---------------


(1) Calculated on a taxable equivalent basis using a 39% effective tax rate.
(2) The average expected lives of mortgage-backed securities were 3.4 years
    based upon current prepayment assumptions.
(3) Primarily common stock and preferred stock of U.S. Government agencies
    with no stated maturity.
(4) The nominal yield on mortgage-backed securities is based upon prepayment
    assumptions at the purchase date. Actual yields earned may differ
    significantly based upon actual prepayments.
(5) Expected maturities may differ from contractual maturities, because
    borrowers may have the right to call or prepay obligations with or without
    penalty.

 52

Sales of available for sale  securities  resulted in gains and losses as follows
(in thousands):

                              2005        2004        2003
                           ---------------------------------
Proceeds                  $1,537,628  $2,652,554  $5,089,734
Gross realized gains           5,145      10,452      30,373
Gross realized losses         12,040      13,540      23,185
Related federal and state
   income tax expense
   (benefit)                  (2,480)     (1,044)      2,585

In addition to securities  that have been  reclassified as pledged to creditors,
securities  with an amortized  cost of $2.7 billion and $2.6 billion at December
31, 2005 and 2004, respectively,  have been pledged as collateral for repurchase
agreements,  public  and  trust  funds on  deposit  and for other  purposes,  as
required by law.  The secured  parties do not have the right to sell or repledge
these securities.

Net  unrealized  losses on securities  totaled $107 million at December 31, 2005
compared  with net  unrealized  losses of $15 million at  December  31, 2004 due
primarily to rising  interest  rates.  The aggregate  gross amount of unrealized
losses at December  31, 2005 totaled $114  million.  Unrealized  losses were due
primarily to rising interest rates.  None of the unrealized losses resulted from
credit quality  concerns.  Management  evaluated the securities  with unrealized
losses  to  determine  if we  believe  that  the  losses  were  temporary.  This
evaluation  considered  factors  such as causes  of the  unrealized  losses  and
prospects  for recovery over various  interest rate  scenarios and time periods.
The Company also considered the ability and intent to hold the securities  until
the fair values  exceed  amortized  cost.  It is our belief,  based on currently
available  information and our evaluation,  that the unrealized  losses in these
securities were temporary.



TEMPORARILY IMPAIRED SECURITIES
(In Thousands)
                                        Less Than 12 Months          12 Months or Longer                 Total
                                      -------------------------    -------------------------    -------------------------
                                         Fair      Unrealized         Fair      Unrealized         Fair      Unrealized
                                         Value        Loss            Value        Loss            Value        Loss
                                      -----------------------------------------------------------------------------------
Investment:
                                                                                             
  U.S. Treasury                        $    1,976    $    18       $        -   $       -       $    1,976     $     18
  Municipal and other tax exempt          110,872      1,464           47,765       1,149          158,637        2,613

Available for sale:
  U. S. Treasury                            4,950         45           10,877         165           15,827          210
  Other debt securities                         -          -               34           1               34            1
  Municipal and other tax-exempt            8,093         59              296          19            8,389           78
  Mortgage-backed securities:
      U. S. agencies                    1,188,731     20,262        2,027,695      63,845        3,216,426       84,107
      Other                               299,168      4,399          901,533      22,262        1,200,701       26,661
- -------------------------------------------------------------------------------------------------------------------------
Total                                  $1,613,790    $26,247       $2,988,200   $  87,441       $4,601,990     $113,688
- -------------------------------------------------------------------------------------------------------------------------


 53

(4) DERIVATIVES

The  fair  values  of  derivative  contracts  at  December  31,  2005  were  (in
thousands):

                                              Assets      Liabilities
                                          -----------------------------
   Customer Risk Management Programs:
         Interest rate contracts            $ 18,741       $ 20,309
         Energy contracts                    418,494        416,106
         Cattle contracts                      1,014            970
         Foreign exchange contracts           14,629         14,629
- -----------------------------------------------------------------------
   Total Customer Derivatives                452,878        452,014

   Interest Rate Risk Management Programs          -         14,655
- -----------------------------------------------------------------------
     Total Derivative Contracts             $452,878       $466,669
- -----------------------------------------------------------------------

CUSTOMER RISK MANAGEMENT PROGRAMS

BOK Financial offers programs that permit its customers to manage various risks,
including  fluctuations in energy and cattle prices,  interest rates and foreign
exchange rates.  Derivative contracts are executed between the customers and BOK
Financial.  Offsetting contracts are executed between BOK Financial and selected
counterparties  to minimize  the risk of changes in commodity  prices,  interest
rates or foreign exchange rates. The counterparty contracts are identical to the
customer  contracts,  except  for a fixed  pricing  spread  or a fee paid to BOK
Financial as compensation for administrative costs, credit risks and profit.

INTEREST RATE RISK MANAGEMENT PROGRAMS

BOK   Financial   uses  interest  rate  swaps  in  managing  its  interest  rate
sensitivity.  Interest  rate swaps are  generally  used to reduce  overall asset
sensitivity by converting specific fixed rate liabilities to floating rate based
on LIBOR, or specific  prime-based loans to fixed rate.  Interest rate swaps are
designated as fair value or cash flow hedges when the specific criteria required
by generally  accepted  accounting  principles are met.  These criteria  include
requirements that derivatives are highly effective in offsetting changes in fair
value or cash flow of the hedged assets or liabilities.

The following  table  details  interest  rate swaps and,  when  applicable,  the
associated  hedged  assets or  liabilities  at  December  31,  2005  (dollars in
thousands):


                        Hedged Asset / Liability                                      Interest Rate Swap
         --------------------------------------------------------------------------------------------------------------------------
                                          Weighted Average                     Weighted Average
                                     ---------------------------          ---------------------------
                                      Fixed Rate Floating Rate   Notional   Fixed Rate      Floating          Positive    Negative
                                                                                             Rate
 Maturity   Description      Amount     (Paid)     Received(2)    Amount  Received (Paid) Received (Paid)(1) Fair Value  Fair Value
  ---------------------------------------------------------------------------------------------------------------------------------
  Fair value hedges:
                                                                                                   
   2006  Certificates of  $186,937     (3.590)%        - %      $187,000      3.818%        (4.390)%           $  -       $   847
           deposit
   2007  Certificates of   139,875     (3.634)         -         140,000      3.795         (4.390)               -         1,995
           deposit
   2007  Subordinated      150,000     (7.125)         -         150,000      3.165         (4.390)               -         3,947
           debt
   2008  Certificates of    21,920     (3.000)         -          22,000      3.093         (4.390)               -           811
           deposit
   2009  Certificates of    54,544     (3.945)         -          55,000      4.052         (4.390)               -         1,293
           deposit
   2010  Certificates of     9,564     (3.626)         -          10,000      3.657         (4.390)               -           456
           deposit
   2011  Certificates of    29,435     (3.983)         -          30,000      4.013         (4.390)               -         1,128
           deposit
  ---------------------------------------------------------------------------------------------------------------------------------
  Total fair value hedges  592,275                               594,000                                          -        10,477
  ---------------------------------------------------------------------------------------------------------------------------------
 Cash flow hedges:
   2008  Prime rate loans  100,000        -         7.250        100,000      5.926         (7.250)(2)            -         3,441
  ---------------------------------------------------------------------------------------------------------------------------------
   Total cash flow hedges  100,000                               100,000                                          -         3,441
  ---------------------------------------------------------------------------------------------------------------------------------
 Not designated as hedges:
   2006                          -        -            -          12,497     (5.425)         4.390                -            48
   2006                          -        -            -          33,000      2.699         (4.390)               -           255
   2009                          -        -            -          15,000      4.432         (4.390)               -           175
   2011                          -        -            -          29,311     (5.358)         4.390                -           259
                        -----------                           ------------                            -----------------------------
         Total            $692,275                              $783,808                                       $  -       $14,655
                        -----------                           ------------                            -----------------------------


(1) Floating rates are based on 30-day LIBOR, unless otherwise noted.
(2) Floating rate based on prime.

During 2005 and 2004,  net  interest  revenue was  decreased by $1.4 million and
increased  by  $9.9  million,  respectively,  from  the  settlement  of  amounts
receivable or payable on interest rate swaps.

 54

(5) LOANS

Significant components of the loan portfolio are as follows (in thousands):


                                                                          December 31,
                                 ---------------------------------------------------------------------------------------------
                                                       2005                                           2004
                                 ------------------------------------------------ --------------------------------------------
                                    Fixed      Variable     Non-                     Fixed     Variable      Non-
                                     Rate        Rate      accrual     Total         Rate        Rate      accrual     Total
                                 ------------------------------------------------ --------------------------------------------
                                                                                           
 Commercial                      $2,040,799   $3,247,463  $11,673  $5,299,935    $1,580,239  $2,962,402   $33,195  $4,575,836
 Commercial real estate             588,128    1,396,404    5,370   1,989,902       376,290   1,234,676    10,144   1,621,110
 Residential mortgage               624,685      537,299    7,347   1,169,331       687,574     502,732     8,612   1,198,918
 Residential mortgage held for sale  51,666            -        -      51,666        40,262           -         -      40,262
 Consumer                           422,799      205,573      772     629,144       309,461     182,671       709     492,841
 -----------------------------------------------------------------------------------------------------------------------------
 Total                           $3,728,077   $5,386,739   $25,162 $9,139,978    $2,993,826  $4,882,481   $52,660  $7,928,967
 -----------------------------------------------------------------------------------------------------------------------------
 Loans past due (90 days)                                          $    8,708                                      $    7,649
 -----------------------------------------------------------------------------------------------------------------------------
 Foregone interest on nonaccrual loans                             $    2,515                                      $    4,617
 -----------------------------------------------------------------------------------------------------------------------------


Approximately   57%  of  the  commercial   and  consumer  loan   portfolios  and
approximately  72% of the residential  mortgage loan portfolio  (excluding loans
held for  sale)  are loans to  businesses  and  individuals  in  Oklahoma.  This
geographic  concentration  subjects the loan  portfolio to the general  economic
conditions within this area.

Within the commercial loan  classification,  loans to energy-related  businesses
totaled  $1.4  billion or 15% of total  loans as of  December  31,  2005.  Other
notable  segments  include  wholesale/retail,  $793  million;  healthcare,  $520
million; manufacturing,  $515 million; agriculture, $292 million, which includes
$228  million of loans to the  cattle  industry;  and  services,  $1.4  billion.
Approximately  $1.1  billion of the  services  category is made up of loans with
outstanding balances of less than $10 million.

Approximately  33% of  commercial  real estate  loans are secured by  properties
located in  Oklahoma,  primarily  in the Tulsa and  Oklahoma  City  metropolitan
areas. An additional 30% of commercial real estate loans are secured by property
located in Texas.  The major  components  of these  properties  are  multifamily
residences,  $205  million;  construction  and land  development,  $638 million;
retail facilities, $305 million; and office buildings, $499 million.

During  2004,  interest  rate  swaps with $100  million  notional  amounts  were
designated cash flow hedges of prime-based  loans and they remained  outstanding
through 2005. The objective of the hedge is to protect  against the  variability
of interest  cash flows on the first $100 million of then  existing  prime-based
loans. The Company receives  settlements based on a fixed rate of 5.93% and pays
settlements based on the U.S. prime rate. Amounts due are settled monthly. As of
December  31, 2005, a net loss of  approximately  $2.1 million  related to these
swaps was included in accumulated other comprehensive  income and expected to be
reclassified into earnings based on the current interest rate environment.

CREDIT COMMITMENTS

Commitments  to extend  credit are  agreements  to lend to a customer as long as
there is no violation of conditions  established  in the  contract.  Commitments
generally  have fixed  expiration  dates or other  termination  clauses  and may
require payment of a fee. At December 31, 2005, outstanding  commitments totaled
$4.3 billion. Because some commitments are expected to expire before being drawn
upon, the total  commitment  amounts do not  necessarily  represent  future cash
requirements.  BOK Financial uses the same credit policies in making commitments
as it does loans.

The  amount  of  collateral  obtained,  if  deemed  necessary,   is  based  upon
management's credit evaluation of the borrower.

Standby  letters of credit are conditional  commitments  issued to guarantee the
performance of a customer to a third party.  Because the credit risk involved in
issuing  standby  letters of credit is essentially  the same as that involved in
extending  loan  commitments,  BOK  Financial  uses the same credit  policies in
evaluating the  creditworthiness  of the customer.  Additionally,  BOK Financial
uses the same evaluation  process in obtaining  collateral on standby letters of
credit as it does for loan  commitments.  The term of these  standby  letters of
credit  is  defined  in each  commitment  and  typically  corresponds  with  the
underlying loan commitment. At December 31, 2005, outstanding standby letters of
credit totaled $559 million.

 55

Commercial letters of credit are used to facilitate  customer trade transactions
with the drafts being drawn when the underlying  transaction is consummated.  At
December 31, 2005, outstanding commercial letters of credit totaled $6 million.

RESERVES  FOR CREDIT LOSSES

The  activity  in the  reserve  for loan  losses is  summarized  as follows  (in
thousands):

                                 2005      2004       2003
                             ----------------------------------
  Beginning balance           $ 108,618  $ 114,784 $ 103,851
  Provision for loan losses      10,401     15,792    34,000
  Loans charged off             (25,758)   (29,685)  (31,475)
  Recoveries                      9,544      7,727     6,125
  Addition due to acquisitions    1,071          -     2,283
  -------------------------------------------------------------
  Ending balance              $ 103,876  $ 108,618 $ 114,784
  -------------------------------------------------------------

The activity in the reserve for off-balance sheet credit losses is summarized as
follows (in thousands):

                                 2005      2004      2003
                             --------------------------------
  Beginning balance           $  18,502  $  13,855 $  12,219
  Provision for off-balance
     sheet credit losses          2,040      4,647     1,636
  Additions due to acquisitions      32          -         -
  -----------------------------------------------------------
  Ending balance              $  20,574  $  18,502 $  13,855
  -----------------------------------------------------------

  Provision for credit losses $  12,441  $  20,439 $  35,636
  -----------------------------------------------------------

IMPAIRED LOANS

Investments in loans considered to be impaired under FAS 114 were as follows (in
thousands):
                                       December 31,
                             --------------------------------
                                 2005      2004      2003
                             --------------------------------
  Investment in loans impaired
     under FAS 114 (all of
     which were on a
     nonaccrual basis)         $19,857    $45,424   $46,990
  Loans with specific reserves
     for loss                    5,686     14,881    18,947
  Specific reserve balance       2,632      6,994     6,377
  No specific related reserve
     for loss                   14,171     30,543    28,043
  Average recorded investment
     in impaired loans          32,722     46,386    47,415

Interest income  recognized on impaired loans during 2005, 2004 and 2003 was not
significant.

(6) PREMISES AND EQUIPMENT

Premises and equipment at December 31 are summarized as follows (in thousands):

                                            December 31,
                                     ------------------------
                                          2005        2004
                                     ------------------------
   Land                               $  43,875   $  40,479
   Buildings and improvements           143,051     135,932
   Software                              31,250      27,515
   Furniture and equipment              107,675     100,447
- -------------------------------------------------------------
   Subtotal                             325,851     304,373
   Less accumulated depreciation        146,224     131,730
- -------------------------------------------------------------
   Total                              $ 179,627   $ 172,643
- -------------------------------------------------------------

Depreciation expense of premises and equipment was $24.0 million,  $23.4 million
and  $22.4  million  for the  years  ended  December  31,  2005,  2004 and 2003,
respectively.

(7) INTANGIBLE ASSETS

The following table presents the original cost and  accumulated  amortization of
intangible assets (in thousands):
                                            December 31,
                                      -----------------------
                                           2005       2004
                                      -----------------------
   Core deposit premiums               $ 90,637    $ 86,257
   Less accumulated amortization         77,111      71,158
- -------------------------------------------------------------
   Net core deposit premiums             13,526      15,099
   Other identifiable intangible assets  17,866      11,526
   Less accumulated amortization          5,238       4,249
- -------------------------------------------------------------
   Net other identifiable intangible
      assets                             12,628       7,277
   Goodwill                             290,003     273,353
   Less accumulated amortization         53,135      53,135
- -------------------------------------------------------------
 Net goodwill                           236,868     220,218
- -------------------------------------------------------------
 Total intangible assets, net          $263,022    $242,594
- -------------------------------------------------------------

Expected  amortization  expense for  intangible  assets that will continue to be
amortized under FAS 142, as amended by FAS 147, (in thousands):

                      Core            Other
                     Deposit       Identifiable
                    Premiums    Intangible Assets     Total
                 ----------------------------------------------
 2006               $ 4,563         $  769           $ 5,332
 2007                 3,777            763             4,540
 2008                 2,314            780             3,094
 2009                 1,871          1,137             3,008
 2010                   846          1,163             2,009
 Thereafter             155          8,016             8,171
- ---------------------------------------------------------------
                    $13,526        $12,628           $26,154
- ---------------------------------------------------------------

 56

The net amortized cost of intangible  assets at December 31, 2005 is assigned to
reporting units as follows (in thousands):

        Core deposit premiums:
          Bank of Texas                     $  4,143
          Colorado State Bank and Trust        5,781
          Bank of Arizona                      3,602
       -----------------------------------------------
                                            $ 13,526
       -----------------------------------------------
        Other identifiable intangible assets:
          Bank of Oklahoma                  $  6,341
          Colorado State Bank and Trust        6,287
       -----------------------------------------------
                                            $ 12,628
       -----------------------------------------------
        Goodwill:
          Bank of Oklahoma                  $  8,173
          Bank of Texas                      154,741
          Bank of Albuquerque                 15,273
          Colorado State Bank and Trust       42,031
          Bank of Arizona                     16,650
       -----------------------------------------------
                                            $236,868
       -----------------------------------------------

During 2005,  the Company  acquired the naming  rights to the BOk Center,  a new
arena to be built in Tulsa, Oklahoma, and other related intangible rights. Under
an agreement with the City of Tulsa,  the Company will pay $11.0 million over 20
years.  One  or  more  installment  payments  may be  accelerated  by  paying  a
discounted amount based on the average yield of 20-year U.S. Treasury bonds. The
Company  recognized  a $6.3  million  intangible  asset and an  interest-bearing
liability from this transaction. The intangible asset will be amortized over the
life of the agreement.

(8) MORTGAGE BANKING ACTIVITIES

BOK Financial  engages in mortgage banking  activities  through the BOk Mortgage
Division of BOk.  Residential  mortgage  loans held for sale totaled $52 million
and $40 million,  and outstanding mortgage loan commitments totaled $233 million
and $189  million at December  31, 2005 and 2004,  respectively.  Mortgage  loan
commitments are generally  outstanding for 60 to 90 days and are subject to both
credit and  interest  rate risk.  Credit  risk is managed  through  underwriting
policies and procedures,  including collateral requirements, which are generally
accepted by the secondary loan markets.  Exposure to interest rate  fluctuations
is partially  hedged  through  forward sales of  mortgage-backed  securities and
forward  sales  contracts.  These latter  contracts set the price for loans that
will be  delivered  in the next 60 to 90 days.  As of  December  31,  2005,  the
unrealized loss on forward sales  contracts used to hedge the mortgage  pipeline
was  approximately  $217  thousand.  Gains on  mortgage  loans  sold,  including
capitalized  mortgage  servicing  rights,  totaled $16.0 million in 2005,  $10.4
million in 2004 and $30.5 million in 2003.

At December 31, 2005, BOK Financial  owned the rights to service 53,897 mortgage
loans with  outstanding  principal  balances  of $4.5  billion,  including  $462
million  serviced  for  affiliates,  and held  related  funds of $56 million for
investors and borrowers.  The weighted  average interest rate and remaining term
was  6.13% and 275  months,  respectively.  Mortgage  loans  sold with  recourse
totaled $248 million at December 31, 2005.  At December 31, 2004,  BOK Financial
owned the rights to service  56,062  mortgage loans with  outstanding  principal
balances of $4.5 billion,  including $655 million  serviced for affiliates,  and
held related  funds of $67 million for  investors  and  borrowers.  The weighted
average interest rate and remaining term was 6.27% and 270 months, respectively.
Mortgage loans sold with recourse totaled $32 million at December 31, 2004.

The  portfolio of mortgage  servicing  rights  exposes BOK Financial to interest
rate risk.  During periods of falling interest rates,  mortgage loan prepayments
increase,  reducing the value of the mortgage  servicing rights.  See Note 1 for
specific accounting policies for mortgage servicing rights.

Activity  in  capitalized   mortgage  servicing  rights  and  related  valuation
allowance during 2003, 2004 and 2005 are as follows (in thousands):

 57


                                                 Capitalized Mortgage Servicing Rights    Valuation     Hedging
                                                 -------------------------------------
                                                  Purchased    Originated    Total        Allowance      Loss(2)      Net
 ----------------------------------------------------------------------------------------------------------------------------
                                                                                                 
 Balance at December 31, 2002                       $37,223    $ 49,849    $ 87,072       $(54,918)      $5,134    $ 37,288
   Additions, net                                        (3)     23,922      23,919              -            -      23,919
   Amortization expense                             (14,840)    (19,315)    (34,155)             -       (1,425)    (35,580)
   Recovery of impairment                                 -           -           -         22,923            -      22,923
 ----------------------------------------------------------------------------------------------------------------------------
 Balance at December 31, 2003                        22,380      54,456      76,836        (31,995)       3,709      48,550
   Additions, net                                         -      11,365      11,365              -            -      11,365
   Amortization expense                              (4,695)    (10,753)    (15,448)             -         (356)    (15,804)
   Write-off                                         (6,291)     (7,012)    (13,303)        16,656       (3,353)          -
   Recovery of impairment                                 -           -           -          1,567            -       1,567
 ----------------------------------------------------------------------------------------------------------------------------
 Balance at December 31, 2004                        11,394      48,056      59,450        (13,772)           -      45,678
   Additions, net                                         -      17,402      17,402              -            -      17,402
   Amortization expense                              (2,788)    (10,110)    (12,898)             -            -     (12,898)
   Write-off                                              -      (2,443)     (2,443)         2,443            -           -
   Recovery of impairment                                 -           -           -          3,915            -       3,915
 ----------------------------------------------------------------------------------------------------------------------------
 Balance at December 31, 2005                       $ 8,606    $ 52,905    $ 61,511       $ (7,414)      $    -    $ 54,097
 ----------------------------------------------------------------------------------------------------------------------------
 Estimated fair value of mortgage servicing rights at:
    December 31, 2003 (1)                           $12,625    $ 36,564    $ 49,189                                $ 49,189
    December 31, 2004 (1)                           $ 9,338    $ 36,985    $ 46,323                                $ 46,323
    December 31, 2005 (1),(3)                       $ 8,489    $ 46,158    $ 54,647                                $ 54,647
 ----------------------------------------------------------------------------------------------------------------------------


(1)  Excludes approximately $1.0 million, $1.1 million and $1.4 million at
     December 31, 2005, 2004 and 2003, respectively, of loan servicing rights
     on mortgage loans originated prior to the adoption of FAS 122.
(2)  Hedging loss represents the deferred loss on a derivatives-based hedging
     program prior to the adoption of FAS 133.
(3)  Fair value of mortgage servicing rights is based on numerous assumptions
     primarily related to mortgage interest rates.  At December 31, 2005,
     management estimates that a 50 basis point increase in mortgage interest
     rates will increase the fair value of mortgage servicing rights by $3.1
     million and a 50 basis point decrease in mortgage interest rates will
     reduce the fair value of mortgage servicing rights by $4.8 million.

Fair  value  is  determined  by  discounting   the  projected  net  cash  flows.
Significant assumptions are:

Discount rate - Indexed to a risk-free rate  commensurate  with the average life
of the servicing portfolio plus a market premium.  The discount rate at December
31, 2005 was 10.85%.

Prepayment  rate - Annual  prepayment  estimates  ranging  from 10.42% to 20.38%
based upon loan interest rate, original term and loan type.

Loan servicing costs - $35 to $46 annually per loan based upon loan type.

Escrow  earnings  rate -  Indexed  to  rates  paid on  deposit  accounts  with a
comparable  average  life.  The escrow  earnings  rate at December  31, 2005 was
5.21%.

Stratification of the mortgage loan-servicing  portfolio,  outstanding principal
of loans serviced,  and related hedging information by interest rate at December
31, 2005 follows (in thousands):


                                                   < 5.51%     5.51% - 6.50%   6.51% - 7.50%     => 7.51%        Total
                                               -----------------------------------------------------------------------------
                                                                                                
 Cost less accumulated amortization                $  14,506     $   29,294     $    13,715      $   3,996     $   61,511
 ---------------------------------------------------------------------------------------------------------------------------
 Fair value                                        $  13,366     $   25,337     $    11,958      $   3,986     $   54,647
 ---------------------------------------------------------------------------------------------------------------------------
 Impairment (2)                                    $   1,267     $    3,959     $     1,759      $     429     $    7,414
 ---------------------------------------------------------------------------------------------------------------------------
 Outstanding principal of loans serviced (1)       $ 998,200     $1,864,300     $   835,500      $ 267,000     $3,965,000
 ---------------------------------------------------------------------------------------------------------------------------


(1)  Excludes outstanding principal of $462 million for loans serviced for
     affiliates and $66 million of mortgage loans for which there are no
     capitalized mortgage servicing rights.
(2)  Impairment is determined by both an interest rate and loan type
     stratification.


 58

(9) DEPOSITS

Interest expense on deposits is summarized as follows (in thousands):

                                2005       2004        2003
                             --------------------------------
 Transaction deposits         $  72,721  $  35,517  $  31,346
 Savings                          1,106        975        944
 Time:
    Certificates of
      deposits under $100,000    50,129     41,978     39,098
    Certificates of deposits
      $100,000 and over          73,248     53,918     48,181
    Other time deposits          13,196     12,045     12,360
 ------------------------------------------------------------
      Total time                136,573    107,941     99,639
 ------------------------------------------------------------
      Total                    $210,400   $144,433   $131,929
 ------------------------------------------------------------

The aggregate  amounts of time deposits in  denominations of $100,000 or more at
December 31, 2005 and 2004 were $2.5 billion and $2.2 billion, respectively.

Time  deposit  maturities  are as  follows:  2006 -  $1.9  billion,  2007 - $1.0
billion, 2008 - $232 million, 2009 - $303 million, 2010 - $298 million, and $374
million thereafter.

At December  31,  2005,  the Company  had $442  million in fixed rate,  brokered
certificates  of  deposits.  The  weighted-average  interest  rate paid on these
certificates  is 3.64%.  Interest  rate swaps have been  designated as hedges of
each of these  certificates.  The  purpose  of these  swaps is to hedge  against
changes  in fair  value  due to  changes  in  interest  rates by  modifying  the
certificates  from fixed rate to floating  rates  based on changes in LIBOR.  We
receive a weighted  average fixed rate of 3.81% on these swaps and currently pay
a floating rate of 4.39%.

Interest  expense on time  deposits  during 2005 and 2004 was reduced by the net
accrued  settlement  from interest rate swaps of $700 thousand and $7.9 million,
respectively.

(10) OTHER BORROWINGS

Information  relating to other  borrowings is summarized as follows  (dollars in
thousands):


                                                                         December 31
                           --------------------------------------------------------------------------------------------------------
                                          2005                                2004                              2003
                           --------------------------------------------------------------------------------------------------------
                                                    Maximum                            Maximum                          Maximum
                                                  Outstanding                        Outstanding                      Outstanding
                                                    At Any                              At Any                          At Any
                             Balance      Rate     Month End     Balance      Rate    Month End    Balance     Rate    Month End
                           --------------------------------------------------------------------------------------------------------
  Parent Company:
                                                                                                 
   Revolving, unsecured line $        -       -%   $   95,000    $   95,000    2.91%   $   95,000  $   95,000    1.75% $   95,000
  Subsidiary Banks:
   Funds purchased and
     repurchase agreements    1,337,911    4.53     2,291,509     1,555,507    2.18     1,900,810   1,609,668    1.37   1,904,269
   Federal Home Loan Bank
     advances                 1,020,871    4.26     1,031,821       894,354    2.31       899,350     899,426    1.21     974,729
   Subordinated debentures      295,964    6.30       297,980       151,594    5.18       154,230     154,332    6.02     155,345
   Other                         33,427    3.13        33,427        25,646    0.98        28,748      22,224    1.58      29,116
                           -------------                       -------------                     -------------
     Total subsidiary banks   2,688,173    4.61                   2,627,101    2.39                 2,685,650    1.58
                           -------------                       -------------                     -------------
  Total other borrowings     $2,688,173    4.61                  $2,722,101    2.41                $2,780,650    1.74
                           -------------                       -------------                     -------------


Aggregate annual principal repayments of long-term debt at December 31, 2005 are
as follows (in thousands):

                               Parent     Subsidiary
                                 Company     Banks
                             ---------------------------
    2006                        $     -    $2,364,738
    2007                              -       152,779
    2008                              -         1,824
    2009                              -         8,524
    2010                              -           475
    Thereafter                        -       159,833
                            ---------------------------
    Total                       $     -    $2,688,173
                            ---------------------------

 59

Funds purchased  generally mature within one to ninety days from the transaction
date.  At December 31, 2005,  securities  sold under  agreements  to  repurchase
totaled $661 million with related accrued interest payable of $75 thousand.

Additional information relating to repurchase agreements at December 31, 2005 is
as follows (dollars in thousands):


                                                   Amortized        Market        Repurchase      Average
 Security Sold/Maturity                              Cost           Value         Liability(1)     Rate
  -------------------------------------------------------------------------------------------------------------
                                                                                        
 Overnight U.S. Agency Securities                  $  806,679    $   781,589      $  661,192        4.14%
 -------------------------------------------------------------------------------------------------------------


(1) BOK Financial maintains control over the securities underlying overnight
    repurchase agreements and generally transfers control over securities
    underlying longer-term dealer repurchase agreements to the respective
    counterparty.

Borrowings  from the Federal  Home Loan Bank are used for funding  purposes.  In
accordance  with  policies  of the Federal  Home Loan Bank,  BOK  Financial  has
granted a  blanket  pledge  of  eligible  assets  (generally  unencumbered  U.S.
Treasury and mortgage-backed securities, 1-4 family loans and multifamily loans)
as collateral for these advances.  The Federal Home Loan Bank has issued letters
of credit  totaling  $308  million  to secure  BOK  Financial's  obligations  to
depositors  of public  funds.  The unused  credit  available to BOK Financial at
December 31, 2005 pursuant to the Federal Home Loan Bank's  collateral  policies
is $314 million.

BOK Financial has a $100 million unsecured revolving line of credit with certain
commercial  banks  that  expires  in  December  2010.  There was no  outstanding
principal  balance of this credit  agreement at December  31, 2005.  Interest is
based upon a base rate or LIBOR plus a defined  margin that is determined by the
Company's  credit rating.  This margin ranges from 0.375% to 1.125%.  The margin
currently applicable to borrowings against this line is 0.500%. The base rate is
defined as the greater of the daily federal funds rate plus 0.5% or the SunTrust
Bank prime rate.  Interest is generally  paid  monthly.  Facility  fees are paid
quarterly  on the  unused  portion  of the  commitment  at rates that range from
0.100% to 0.250% based on the Company's  credit  rating.  This credit  agreement
includes  certain  restrictive  covenants  that limit the  Company's  ability to
borrow additional funds, to make investments and to pay cash dividends on common
stock.  These  covenants  also require BOK  Financial  and  subsidiary  banks to
maintain  minimum  capital  levels.  BOK  Financial  met all of the  restrictive
covenants at December 31, 2005.

In 2005, BOk issued $150 million of 10-year,  fixed rate subordinated  debt. The
cost of this subordinated  debt,  including issuance discounts and hedge loss is
5.43%.  The  proceeds  of this  debt  were  used to  repay  $95  million  of BOK
Financial's unsecured revolving line of credit and to provide additional capital
to support asset growth.

In 1997, BOk issued a $150 million 7.125% fixed rate subordinated debenture that
matures in 2007.  During 2004, a $150 million notional amount interest rate swap
was designated as a hedge of changes in fair value of the subordinated  debt due
to changes in interest  rates.  The Company  receives a fixed rate of 3.165% and
pays a variable  rate based on 1-month  LIBOR,  or 4.39% at December  31,  2005.
Semi-annual swap settlements coincide with interest payments on the subordinated
debenture.  The interest rate swap  terminates on August 15, 2007,  the maturity
date of the subordinated debenture.

(11) FEDERAL AND STATE INCOME TAXES

Deferred  income  taxes  reflect  the net tax effects of  temporary  differences
between the carrying  amounts of assets and liabilities for financial  reporting
purposes and the amounts used for income tax purposes. Significant components of
deferred tax assets and liabilities are as follows (in thousands):

                                            December 31,
                                       ----------------------
                                          2005       2004
                                       ----------------------
 Deferred tax liabilities:
    Pension contributions in excess
      of book expense                    $  9,900   $  9,400
    Valuation adjustments                  27,600     29,300
    Mortgage servicing rights              22,000     20,200
    Lease financing                        15,500     15,800
    Other                                   3,300      4,500
 ------------------------------------------------------------
      Total deferred tax liabilities       78,300     79,200
 ------------------------------------------------------------
 Deferred tax assets:
    Available for sale securities
      mark-to-market                       40,700      6,400
    Stock-based compensation                4,700      3,900
    Credit loss reserves                   48,000     48,500
    Valuation adjustments                   7,700     13,200
    Deferred book income                   26,000     22,400
    Deferred compensation                   6,900      8,300
    Other                                  12,500     12,100
 ------------------------------------------------------------
      Total deferred tax assets           146,500    114,800
 ------------------------------------------------------------
  Deferred tax assets in excess of
    deferred tax liabilities             $ 68,200   $ 35,600
 ------------------------------------------------------------

 60

The  significant  components of the provision for income taxes  attributable  to
continuing operations for BOK Financial are shown below (in thousands):

                              Years ended December 31,
                         -----------------------------------
                             2005       2004       2003
                         -----------------------------------
 Current:
    Federal               $ 105,403     $84,514    $77,015
    State                     7,341       6,743      5,551
 -----------------------------------------------------------
    Total current           112,744      91,257     82,566
 -----------------------------------------------------------
 Deferred:
    Federal                     415         161      5,369
    State                        76          29        979
 -----------------------------------------------------------
    Total deferred              491         190      6,348
 -----------------------------------------------------------
      Total income tax    $ 113,235     $91,447    $88,914
 -----------------------------------------------------------

The reconciliations of income attributable to continuing  operations computed at
the U.S.  federal  statutory  tax rates to income tax expense are as follows (in
thousands):

                                 Years ended December 31,
                              -------------------------------
                                 2005      2004      2003
                              -------------------------------
 Amount:
    Federal statutory tax      $110,158   $94,671   $86,538
    Tax exempt revenue           (2,592)   (2,705)   (2,815)
    Effect of state income taxes,
      net of federal benefit      4,729     4,220     4,110
    Intangible amortization         216       397       763
    Charitable contribution           -    (2,446)        -
    Utilization of tax credits     (929)     (784)     (794)
    Reduction of tax accrual          -    (3,000)        -
    Other, net                    1,653     1,094     1,112
 ------------------------------------------------------------
      Total                    $113,235   $91,447   $88,914
 ------------------------------------------------------------

Due to the  favorable  resolution of certain state tax issues for the tax period
ended  December 31, 2000,  BOK Financial  reduced its tax accrual by $3 million,
which was credited against current federal income tax expense in 2004.

                                  Years ended December 31,
                               -------------------------------
                                  2005      2004      2003
                               -------------------------------
 Percent of pretax income:
    Federal statutory rate         35%       35%       35%
    Tax-exempt revenue             (1)       (1)       (1)
    Effect of state income taxes,
      net of federal benefit        1         2         2
    Intangible amortization         -         -         -
    Charitable contribution         -        (1)        -
    Utilization of tax credits      -         -         -
    Reduction of tax accrual        -        (1)        -
    Other, net                      1         -         -
 -------------------------------------------------------------
      Total                        36%       34%       36%
 -------------------------------------------------------------

 61

(12) EMPLOYEE BENEFITS

BOK  Financial  sponsors a defined  benefit  cash  balance  Pension Plan for all
employees who satisfy certain age and service requirements.  The following table
presents information regarding this plan (dollars in thousands):


                                                                                 December 31,
                                                                           --------------------------
                                                                               2005         2004
                                                                           ---------------------------
 Change in projected benefit obligation:
                                                                                  
    Projected benefit obligation at beginning of year                       $ 44,688    $ 37,773
    Service cost                                                               6,766       6,096
    Interest cost                                                              2,488       2,314
    Actuarial loss                                                             6,599       2,262
    Benefits paid                                                             (2,884)     (3,757)
 -----------------------------------------------------------------------------------------------------
 Projected benefit obligation at end of year (1),(2)                        $ 57,657    $ 44,688
 -----------------------------------------------------------------------------------------------------
 Change in plan assets:
    Plan assets at fair value at beginning of year                          $ 52,246    $ 43,275
    Actual return on plan assets                                               3,298       4,002
    Company contributions                                                      6,329       8,726
    Benefits paid                                                             (2,884)     (3,757)
 -----------------------------------------------------------------------------------------------------
 Plan assets at fair value at end of year                                   $ 58,989    $ 52,246
 -----------------------------------------------------------------------------------------------------
 Reconciliation of prepaid (accrued) and total amount recognized:
      Benefit obligation                                                    $(57,657)   $(44,688)
      Fair value of assets                                                    58,989      52,246
 -----------------------------------------------------------------------------------------------------
      Funded status of the plan                                                1,332       7,558
      Unrecognized net loss                                                   20,555      14,226
      Unrecognized prior service cost                                              -         443
 -----------------------------------------------------------------------------------------------------
 Prepaid pension costs                                                      $ 21,887    $ 22,227
 -----------------------------------------------------------------------------------------------------
 Components of net periodic benefit costs:
    Service cost                                                            $  6,766    $  6,096
    Interest cost                                                              2,488       2,314
    Expected return on plan assets                                            (4,122)     (3,639)
    Amortization of unrecognized amounts:
      Net loss                                                                 1,094       1,060
      Prior service cost                                                          60          60
 -----------------------------------------------------------------------------------------------------
 Net periodic pension cost                                                  $  6,286    $  5,891
 -----------------------------------------------------------------------------------------------------

(1)  Projected benefit obligation equals accumulated benefit obligation.
(2)  Projected benefit obligation is based on a January 1 measurement date.

 Weighted-average assumptions as of December 31:
    Discount rate                                                              5.50%       5.75%
    Expected return on plan assets                                             8.00%       8.00%
    Rate of compensation increase                                              5.25%       5.25%


As of December 31, 2005, expected future benefit payments related to the Pension
Plan were as follows (in thousands):

                2006                               $  2,734
                2007                                  3,307
                2008                                  3,038
                2009                                  3,310
                2010                                  3,297
                2011 through 2015                    18,272
                                                 -------------
                                                   $ 33,958
                                                 -------------

 62

Assets  of the  Pension  Plan  consist  primarily  of  shares  in  the  American
Performance  Balanced Fund.  The stated  objective of this fund is to provide an
attractive total return through a broadly diversified mix of equities and bonds.
The typical  portfolio  mix is  approximately  60% equities  and 40% bonds.  The
inception-to-date return on the fund, which is used as an indicator when setting
the expected return on plan assets,  was 8.40%.  The maximum allowed and minimum
required  Pension  Plan  contributions  for  2005  were  $7.5  million  and  $0,
respectively.  Amounts contributed to the Pension Plan during 2005 included $5.0
million attributable to the current year and $1.3 million attributable to 2004.

Employee contributions to the Thrift Plans are matched by BOK Financial up to 5%
of base compensation,  based upon years of service.  Participants may direct the
investments of their accounts in a variety of options, including a BOK Financial
Common  Stock  fund.  Employer  contributions  vest  over five  years.  Expenses
incurred by BOK  Financial  for the Thrift  Plans  totaled  $4.6  million,  $3.9
million and $3.6 million for 2005, 2004 and 2003, respectively.

BOK Financial also sponsors a defined benefit  post-retirement  employee medical
plan,  which pays 50 percent of annual medical  insurance  premiums for retirees
who meet  certain age and service  requirements.  Assets of the retiree  medical
plan consist primarily of shares in a cash management fund.  Eligibility for the
post-retirement  plan is limited to current  retirees and certain  employees who
were age 60 or older at the time the plan was frozen in 1993. The net obligation
recognized  under the plan was $2.2 million at December 31, 2005. A 1% change in
medical expense trends would not significantly affect the net obligation or cost
of this plan.

During the fourth quarter of 2005,  modifications to both the thrift and pension
plans were approved. These modifications will become effective April 1, 2006 and
consist  primarily  of enhanced  Company  contributions  to the thrift plans and
curtailed benefit accruals to the pension plan.

Employee  contributions  to the thrift plans eligible for Company  matching will
increase from 5% of base compensation to 6% of base compensation,  as defined in
the plans. The Company-provided  matching contribution rates will range from 50%
for employees with less than four years of service to 200% for employees with 15
or more years of service. Additionally, a maximum Company-provided, non-elective
annual  contribution  of $750  will be made  for  employees  whose  annual  base
compensation is less than $30,000.

Accruals for future  service under the pension plan will be curtailed.  Interest
will continue to accrue on  employees'  account  balances at 5.25%.  A charge of
$384 thousand was recognized in 2005 for the curtailment of the pension plan.

The  combined  effects  of  these  modifications  are  not  expected  to  have a
significant impact on future earnings or liquidity. The Company will continue to
have a funding  obligation  to the pension  plan and will  continue to recognize
pension  expense  based on plan  asset  performance,  discount  rates  and other
factors.  At December 31, 2005,  prepaid  pension expense totaled $21.9 million,
consisting of $1.3 million of net plan assets in excess of liabilities and $20.6
million of  unrecognized  actuarial  losses.  These losses will be recognized in
future years. These unrecognized losses may also be increased or reduced by plan
asset performance and discount rate changes.

BOK Financial offers numerous incentive compensation plans that are aligned with
the Company's  growth  strategy.  Cash settlements paid under these plans may be
based  on  defined  formulas,   other  performance  criteria  or  discretionary.
Incentive  compensation is designed to motivate and reinforce sales and customer
service  behavior in all markets.  Earnings  were charged $48.7 million in 2005,
$46.4  million  in 2004 and $46.2  million  in 2003 for  incentive  compensation
plans.

(13) STOCK COMPENSATION PLANS

The  shareholders  and Board of Directors of BOK Financial have approved various
stock-based  compensation  plans. An independent  compensation  committee of the
Board of  Directors  determines  the  number  of  awards  granted  to the  Chief
Executive Officer and other senior executives.  Stock-based compensation granted
to other  officers  and  employees is approved by the  independent  compensation
committee  upon  recommendation  of the  Chairman  of the  Board  and the  Chief
Executive Officer.

These  awards  consist  primarily  of stock  options that are subject to vesting
requirements.  Generally,  one-seventh of the options  awarded vest annually and
expire three years after vesting.  Additionally,  stock options that vest in two
years and expire 45 days after vesting have been awarded.  Non-vested shares may
be granted to the Chief  Executive  Officer and other senior  executives  of the
Company. These shares vest five years after the grant date. The holders of these
shares  may be  required  to retain the shares  for a  three-year  period  after
vesting.

 63

The Chief  Executive  Officer  and other  senior  executives  participate  in an
Executive  Incentive  Plan.  The number of  options  and  non-vested  shares may
increase or decrease based upon the Company's  growth in earnings per share over
a three-year  period  compared to the median  growth in earnings per share for a
designated peer group of financial institutions and other individual performance
factors.

The following  table presents  options  outstanding  during 2003,  2004 and 2005
under these plans:
                                                Weighted-
                                                 Average
                                                 Exercise
                                     Number       Price
                                   --------------------------
 Options outstanding at
    December 31, 2002               3,233,570       19.66
 Options awarded                      889,343       32.60
 Options exercised                   (672,457)      16.74
 Options forfeited                    (61,941)      23.07
 Options expired                          (53)      18.73
 ------------------------------------------------------------
 Options outstanding at
    December 31, 2003               3,388,462       23.58
 Options awarded                      857,951       40.37
 Options exercised                   (693,199)      19.65
 Options forfeited                   (212,844)      27.15
 Options expired                       (2,322)      14.94
 ------------------------------------------------------------
 Options outstanding at
    December 31, 2004               3,338,048      $28.53
 Options awarded                      900,126       47.02
 Options exercised                   (668,990)      24.10
 Options forfeited                    (82,505)      33.67
 Options expired                         (616)      30.11
 ------------------------------------------------------------
 Options outstanding at
    December 31, 2005               3,486,063      $34.03
 ------------------------------------------------------------
 Options vested at
    December 31, 2005               1,004,508      $24.12
 ------------------------------------------------------------

The following table summarizes  information concerning currently outstanding and
vested stock options:

              Options Outstanding                Options Vested
 --------------------------------------------  -------------------

                           Weighted  Weighted
                            Average   Average             Weighted
    Range of               Remaining Exercise             Average
    Exercise     Number   Contractual Price     Number   Exercise
     Prices    Outstanding   Life               Vested     Price
                            (years)

     $ 9.69        20,100      0.83   $ 9.69     20,100   $ 9.69
      16.17        80,911      1.42    16.17     80,911    16.17
  17.37 - 19.02   694,430      2.61    18.00    460,356    18.18
  28.27 - 30.87   914,335      3.80    29.74    279,537    29.34
  37.43 - 37.65    92,490      0.12    37.53     92,490    37.53
      37.74       577,442      5.00    37.74     71,114    37.74
  45.43 - 49.09   218,204      1.00    47.79          -        -
  45.15 - 47.34   674,467      6.00    47.32          -        -
  44.00 - 47.99   213,684      2.00    46.04          -        -
  ---------------------------------------------------------------

Compensation expense for stock options is generally recognized based on the fair
value of options  granted  over the options'  vesting  period.  No  compensation
expense is recognized for options that are forfeited  before  vesting.  The fair
value of options was  determined  as of the date of grant using a  Black-Scholes
option pricing model with the following weighted average assumptions:

                                    2005       2004      2003
                                  ---------- --------- ---------

Average risk-free interest rate    3.69%       3.27%      2.57%
Dividend yield                     0.90%       None       None
Volatility factors                  .161       .168      .178
Weighted-average
   expected life                  4.9 years  4.9 years  7 years
Weighted-average fair value       $10.01      $8.53      $6.66

Compensation   cost  of  stock  options   granted  that  may  be  recognized  as
compensation expense in future years totaled $10.5 million at December 31, 2005.
Subject to  adjustments  for  forfeitures,  we expect to recognize  compensation
expense for current outstanding options of $4.5 million in 2006, $2.9 million in
2007, $1.5 million in 2008, $930 thousand in 2009 and $661 thousand  thereafter.
Stock option  expense for the years ended  December 31, 2005,  2004 and 2003 was
$5.5 million, $3.7 million and $3.6 million, respectively.

BOK Financial also issues non-vested common shares under the various stock-based
compensation  plans. At December 31, 2005, a total of 57,706  non-vested  common
shares have been awarded, including 15,028 awarded in 2005. The weighted average
grant date fair value of non-vested shares awarded in 2005 was $46.76 per share.
Unrecognized  compensation  cost of non-vested  shares  totaled $904 thousand at
December 31, 2005. Subject to adjustment for forfeitures, we expect to recognize
compensation  expense of $250  thousand in 2006 and 2007,  $246 thousand in 2008
and $158 thousand thereafter.

BOK Financial permits certain executive officers to defer recognition of taxable
income from their stock-based  compensation.  Deferred  compensation may also be
diversified into investments other than BOK Financial common stock.

Stock-based  compensation  subject to these  deferral  plans is  recognized as a
liability award rather than as an equity award. Compensation expense is based on
the fair value of the award recognized over the vesting period.  At December 31,
2005,  the  recorded   obligation   for  liability   awards  was  $4.0  million.
Compensation  expense for liability awards was a credit of $632 thousand in 2005
and an expense of $7.6 million in 2004 and $2.2 million in 2003.  The  reduction
in

 64

2005 expense  resulted from the  termination of future  deferral  rights for all
executive  officers  except the  President  and Chief  Executive  Officer  and a
decrease in the period end market value of BOK Financial common stock.

During   January  2006,   BOK  Financial   awarded  the  following   stock-based
compensation:

                                        Exercise  Fair Value /
                              Number     Price        Award
                             ---------------------------------
  Equity awards:
    Stock options             632,776     $47.05  $   9.86
    Nonvested stock            20,495         -      47.05
                             ----------
    Total Equity awards       653,271
  Liability awards:
    Stock options              52,246      47.05      9.86
    Nonvested stock            12,803         -      47.05
                             ----------
     Total Liability awards    65,049
                             ----------
  Total stock-based awards    718,320
  ------------------------------------------------------------

The  aggregate  compensation  cost of these awards  totaled  approximately  $8.5
million.  This cost will be  recognized  over the  vesting  periods,  subject to
adjustments for forfeitures and changes in the fair value of liability awards.

(14) RELATED PARTIES

In  compliance  with  applicable  regulations,  the Company may extend credit to
certain  executive  officers,   directors,   principal  shareholders  and  their
affiliates  (collectively  referred to as  "related  parties")  in the  ordinary
course of business under substantially the same terms as comparable  third-party
lending arrangements. The Company's loans to related parties do not involve more
than the normal  credit risk and there are no  non-accrual  or impaired  related
party loans outstanding at December 31, 2005 or 2004.

Activity in loans to related parties is summarized as follows (in thousands):

                                     2005         2004
                                  ------------ ------------
  Beginning balance                $104,845     $119,873
     Advances                       691,848      434,242
     Payments                      (678,098)    (442,834)
     Adjustments(1)                  11,769       (6,436)
  ------------------------------- ------------ ------------
  Ending balance                   $130,364     $104,845
  ------------------------------- ------------ ------------

(1)  Adjustments generally consist of changes in status as a related party.

BOK Investment  Advisors,  Inc.  ("BOKIA"),  a  wholly-owned  subsidiary of BOk,
serves as investment  advisor to American  Performance  Funds ("AP  Funds").  AP
Funds is a diversified,  open-ended, investment company established in 1987 as a
business  trust under the Investment Act of 1940. BOk serves as custodian for AP
Funds.   Effective   July  1,  2004,   BOKIA  began  serving  as  the  AP  Funds
administrator.  BOK  Financial  offers the AP Funds'  products to customers  and
employees,  in the  ordinary  course of  business,  through  its  brokerage  and
trading,  employee  benefit  plan and trust  services  as well as to the general
public.

Certain  related  parties are  customers of the Company for services  other than
loans,  including consumer banking,  corporate banking, risk management,  wealth
management,  brokerage and trading,  or  fiduciary/trust  services.  The Company
engages in transactions  with related parties in the ordinary course of business
in compliance with applicable  regulations.  There are no other material related
party transactions that require disclosure.

(15) COMMITMENTS AND CONTINGENT LIABILITIES

In the ordinary  course of business,  BOK  Financial  and its  subsidiaries  are
subject to legal actions and  complaints.  Management  believes,  based upon the
opinion of counsel,  that the actions and liability or loss,  if any,  resulting
from  the  final  outcomes  of  the  proceedings  will  not be  material  in the
aggregate.

BOk is  obligated  under a  long-term  lease for its bank  premises  located  in
downtown Tulsa. The lease term, which began November 1, 1976, is for fifty-seven
years  with  options to  terminate  in 2014 and 2024.  Annual  base rent is $3.3
million.  BOk subleases  portions of its space for annual rents of $213 thousand
in years 2006 through 2009 and $195  thousand in 2010.  Net rent expense on this
lease was $2.9 million in years 2005, 2004 and 2003.  Total rent expense for BOK
Financial  was $15.3  million in 2005,  $14.3 million in 2004 and $13 million in
2003.

At December 31, 2005,  future  minimum lease payments for equipment and premises
under operating leases were as follows:  $14.9 million in 2006, $13.6 million in
2007, $12.5 million in 2008, $11.5 million in 2009, $10.6 million in 2010, and a
total of $94.4 million thereafter.  Premises leases may include options to renew
at then current market rates and may include  escalation  provisions  based upon
changes in the consumer price index or similar benchmarks.

The Federal  Reserve  Bank  requires  member banks to maintain  certain  minimum
average cash balances.  These balances were  approximately $316 million and $334
million at December 31, 2005 and 2004, respectively.

 65

BOSC, Inc., a wholly-owned subsidiary of BOK Financial, is an introducing broker
to Pershing,  LLC for retail  equity  investment  transactions.  As such, it has
indemnified Pershing, LLC against losses due to a customer's failure to settle a
transaction  or to repay a margin loan.  All unsettled  transactions  and margin
loans are secured as required by applicable  regulation.  The amount of customer
balances subject to indemnification totaled $1.5 million at December 31, 2005.

BOK Private Equity, LLC, indirectly a wholly-owned  subsidiary of BOK Financial,
is the general  partner in BOK Private  Equity Fund, LP ("the  Fund").  The Fund
provides  alternative  investment  opportunities to certain  customers,  some of
which are related  parties,  through  limited  partnerships.  The Fund generally
invests  in  distressed  assets,   asset  buy-out  or  venture  capital  limited
partnerships or limited liability companies.  The general partner has contingent
obligations  through  the Fund to make  additional  investments  totaling  $16.4
million as of December 31, 2005.

(16) SHAREHOLDERS' EQUITY

PREFERRED STOCK

One billion shares of preferred stock with a par value of $0.00005 per share are
authorized.  The  Series A  Preferred  Stock  has no  voting  rights  except  as
otherwise provided by Oklahoma corporate law and may be converted into one share
of Common Stock for each 36 shares of Series A Preferred  Stock at the option of
the holder.  Dividends  are  cumulative  at an annual rate of ten percent of the
$0.06 per share  liquidation  preference  value when declared and are payable in
cash. Aggregate liquidation preference is $15 million. During the second quarter
of 2005,  holders of the Company's  convertible  preferred stock exercised their
conversion  rights.  All of the  Series A  Preferred  Stock was  converted  into
6,920,666 common shares. In 2004 and 2003, cash dividends  declared on preferred
stock totaled $1.9 million and $750 thousand, respectively.  During 2003, 23,214
shares of BOK Financial  common stock were issued in payment of dividends on the
Series A Preferred  Stock in lieu of cash by mutual  agreement of BOK  Financial
and the holders of the Series A  Preferred  Stock.  These  shares were valued at
$750,000 based on average market price, as defined, for a 65 business day period
preceding  declaration.  George  B.  Kaiser  owned  substantially  all  Series A
Preferred Stock.

COMMON STOCK

Common  stock  consists of 2.5  billion  authorized  shares with a $0.00006  par
value.  Holders  of  common  shares  are  entitled  to one vote per share at the
election  of  the  Board  of  Directors  and  on  any  question  arising  at any
shareholders'  meeting and to receive dividends when and as declared.  No common
stock  dividends  can be paid  unless  all  accrued  dividends  on the  Series A
Preferred Stock have been paid.  Additionally,  regulations restrict the ability
of  national  banks  and  bank  holding  companies  to pay  dividends,  and  BOK
Financial's  credit agreement  restricts the payment of dividends by the holding
company.

During the second quarter of 2005, the Board of Directors approved the Company's
first  quarterly  cash  dividend of $0.10 per common share.  The quarterly  cash
dividend  replaced  the annual  dividend  historically  paid in shares of common
stock. Cash dividends paid on common stock totaled $20 million.  During 2004 and
2003, 3% dividends payable in shares of BOK Financial common stock were declared
and paid.  The  shares  issued  were  valued  at $66  million  and $58  million,
respectively,  based on the average  closing bid/ask prices on the day preceding
declaration. Per share data has been restated to reflect these stock dividends.

During 2002, BOK Financial  agreed to a limited price  guarantee on a portion of
the shares issued to purchase Bank of  Tanglewood.  The fair value of this price
guarantee,  estimated  to be $3  million  based  upon the  Black-Scholes  option
pricing model,  was included in the purchase price.  Any holder of BOK Financial
common  shares  issued in this  acquisition  may  annually  make a claim for the
excess of the  guaranteed  price and the actual  sales  price of any shares sold
during a 60-day  period  after each of the first five  anniversary  dates  after
October 25, 2002.  The maximum annual number of shares subject to this guarantee
is 210,069.  The guaranteed price for each anniversary period is $40.10 for 2006
and $42.53 for 2007. The price guarantee is  nontransferable  and noncumulative.
BOK Financial may elect, in its sole discretion,  to issue additional  shares of
common stock to satisfy any obligation under the price guarantee or to pay cash.
The maximum  aggregate number of common shares that may be issued to satisfy any
price  guarantee  obligations is 10 million.  If, as of any benchmark  date, BOK
Financial has already issued 10 million  shares,  BOK Financial is not obligated
to make any further benchmark  payments.  BOK Financial's ability to pay cash to
satisfy any price  guarantee  obligations is limited by applicable  bank holding
company and bank capital and dividend regulations.

 66

SUBSIDIARY BANKS

The amounts of dividends that BOK Financial's  subsidiary  banks can declare and
the amounts of loans the  subsidiary  banks can extend to affiliates are limited
by various  federal  banking  regulations  and state  corporate law.  Generally,
dividends  declared  during a  calendar  year are  limited  to net  profits,  as
defined,  for the year plus retained  profits for the  preceding two years.  The
amounts of dividends  are further  restricted by minimum  capital  requirements.
Pursuant to the most  restrictive  of the  regulations at December 31, 2005, BOK
Financial's  subsidiary banks could declare dividends up to $158 million without
prior regulatory  approval.  Management has developed and the Board of Directors
has  approved  an internal  capital  policy  that is more  restrictive  than the
regulatory  capital  standards.  As of December 31, 2005, the  subsidiary  banks
could declare  dividends of up to $86 million under this policy.  The subsidiary
banks  declared  and paid  dividends  of $151 million in 2005 and $66 million in
2003. During 2004, the subsidiary banks did not declare any dividends.

Loans to a single  affiliate may not exceed 10% and loans to all  affiliates may
not exceed 20% of  unimpaired  capital and  surplus,  as defined.  Additionally,
loans to  affiliates  must be fully  secured.  As of December 31, 2005 and 2004,
these loans had no outstanding balance.  Total loan commitments to affiliates at
December 31, 2005 were $128 million.

REGULATORY CAPITAL

BOK  Financial  and its  banking  subsidiaries  are  subject to various  capital
requirements  administered  by the  federal  banking  agencies.  Failure to meet
minimum  capital  requirements  can initiate  certain  mandatory and  additional
discretionary  actions by  regulators  that could have a material  effect on BOK
Financial's operations. These capital requirements include quantitative measures
of  assets,  liabilities  and  certain  off-balance  sheet  items.  The  capital
standards  are also subject to  qualitative  judgments by the  regulators  about
components, risk weightings and other factors.

For a banking institution to qualify as well capitalized,  its Tier I, Total and
Leverage  capital ratios must be at least 6%, 10% and 5%,  respectively.  Tier I
capital consists primarily of common stockholders' equity,  excluding unrealized
gains or losses on available for sale  securities,  less goodwill,  core deposit
premiums and certain other intangible assets. As directed by the Federal Reserve
Bank, Tier I capital  excludes $16 million,  the combined value of common shares
issued  subject  to the market  value  protection  program  and the value of the
market value  guarantee.  These values will be restored to Tier I capital as the
market price  guarantee  expires.  Total  capital  consists  primarily of Tier I
capital plus preferred stock,  subordinated debt and reserves for credit losses,
subject to certain  limitations.  All of BOK  Financial's  banking  subsidiaries
exceeded the regulatory definition of well capitalized.


                                                                                December 31,
                                                         ------------------------------------------------------------
                                                                     2005                           2004
                                                         ------------------------------ -----------------------------
                                                              Amount         Ratio           Amount        Ratio
                                                         ------------------------------ -----------------------------
 (Dollars in thousands)
 Total Capital (to Risk Weighted Assets):
                                                                                                 
    Consolidated                                         $    1,625,832       12.10%     $    1,329,431      11.67%
    BOk                                                       1,162,091       10.91           1,016,351      11.13
    Bank of Texas                                               275,507       11.29             235,921      11.41
    Bank of Albuquerque                                          95,134       16.47             103,573      15.34
    Bank of Arkansas                                             18,372       19.53              16,162      20.37
    Colorado State Bank and Trust                                40,249       13.17              36,015      14.50
    Bank of Arizona                                              18,194       18.44                 N/A        N/A
 Tier I Capital (to Risk Weighted Assets):
    Consolidated                                         $    1,322,570        9.84%     $    1,140,654      10.02%
    BOk                                                         895,653        8.41             867,335       9.50
    Bank of Texas                                               252,316       10.34             211,641      10.24
    Bank of Albuquerque                                          88,439       15.31              95,443      14.14
    Bank of Arkansas                                             17,194       18.27              15,164      19.11
    Colorado State Bank and Trust                                36,935       12.09              32,891      13.24
    Bank of Arizona                                              17,113       17.35                 N/A        N/A
 Tier I Capital (to Average Assets):
    Consolidated                                         $    1,322,570        8.30%      $    1,140,654      7.94%
    BOk                                                         895,653        6.88              867,335      7.29
    Bank of Texas                                               252,316        8.09              211,641      7.62
    Bank of Albuquerque                                          88,439        6.76               95,443      6.69
    Bank of Arkansas                                             17,194       10.98               15,164      8.97
    Colorado State Bank and Trust                                36,935        6.10               32,891      8.73
    Bank of Arizona                                              17,113       11.67                  N/A       N/A


 67

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

Accumulated other comprehensive income (loss) ("AOCI") includes unrealized gains
and losses on available for sale securities and  accumulated  gains or losses on
effective cash flow hedges, including hedges of anticipated transactions.  Gains
and losses in AOCI are net of deferred income taxes.  Accumulated losses on cash
flow hedges of  prime-based  loans of $2.1  million  will be  reclassified  into
income  over two  years.  Accumulated  losses on the rate lock hedge of the 2005
subordinated  debenture  issuance  will be  reclassified  into  income  over the
ten-year life of the debt.


                                                                  Unrealized    Accumulated
                                                                  Gain (Loss)     Loss on
                                                                 On Available    Effective
                                                                   For Sale      Cash Flow
                                                                  Securities      Hedges         Total
  ---------------------------------------------------------------------------------------------------------
  Balance at December 31, 2002                                    $  43,088     $       -     $  43,088
                                                                                       
     Unrealized losses on securities                                (46,884)            -       (46,884)
     Tax benefit on unrealized losses                                16,858             -        16,858
     Reclassification adjustment for gains
       realized and included in net income                           (7,188)            -        (7,188)
     Reclassification adjustment for tax expense
       on realized gains                                              2,585             -         2,585
  ---------------------------------------------------------------------------------------------------------
  Balance at December 31, 2003                                        8,459             -         8,459
     Unrealized losses on securities                                (31,806)            -       (31,806)
     Unrealized losses on cash flow hedges                                -        (2,664)       (2,664)
     Tax benefit on unrealized losses                                11,303         1,039        12,342
     Reclassification adjustment for losses
       realized and included in net income                            3,088             -         3,088
     Reclassification adjustment for tax benefit
       on realized losses                                            (1,044)            -        (1,044)
  ---------------------------------------------------------------------------------------------------------
  Balance at December 31, 2004                                      (10,000)       (1,625)      (11,625)
     Unrealized losses on securities                                (92,551)            -       (92,551)
     Unrealized gains on cash flow hedges                                 -           684           684
     Loss on rate lock hedge of subordinated debt issuance                -        (2,788)       (2,788)
     Tax benefit (expense) on unrealized gains (losses)              34,129           (75)       34,054
     Reclassification adjustment for losses
       realized and included in net income                            6,772           123         6,895
     Reclassification adjustment for tax benefit
       on realized losses                                            (2,432)          (48)       (2,480)
  ---------------------------------------------------------------------------------------------------------
  Balance at December 31, 2005                                    $ (64,082)    $  (3,729)    $ (67,811)
  ---------------------------------------------------------------------------------------------------------


(17) EARNINGS PER SHARE

The following table presents the computation of basic and diluted earnings per
share (dollars in thousands except per share data):


                                                                                    Years ended December 31,
                                                                          --------------------------------------------
                                                                               2005          2004           2003
                                                                          --------------------------------------------
 Numerator:
                                                                                                
    Net income                                                              $   201,505   $   179,023    $   158,360
    Preferred stock dividends                                                      (375)       (1,875)        (1,500)
 ---------------------------------------------------------------------------------------------------------------------
 Numerator for basic earnings per share - income
    available to common stockholders                                            201,130       177,148        156,860
 ---------------------------------------------------------------------------------------------------------------------
 Effect of dilutive securities:
    Preferred stock dividends                                                       375         1,875          1,500
 ---------------------------------------------------------------------------------------------------------------------
 Numerator for diluted earnings per share - income available
    to common stockholders after assumed conversion                         $   201,505   $   179,023    $   158,360
 ---------------------------------------------------------------------------------------------------------------------
 Denominator:
    Denominator for basic earnings per share - weighted average shares       64,067,873    59,128,395     58,699,951
    Effect of dilutive securities:
      Employee stock compensation plans (1)                                     628,060       669,857        776,891
      Convertible preferred stock                                             2,351,131     6,921,083      6,921,164
      Tanglewood market value guarantee (see Note 16)                                 -        13,161        111,115
 ---------------------------------------------------------------------------------------------------------------------
 Dilutive potential common shares                                             2,979,191     7,604,101      7,809,170
 ---------------------------------------------------------------------------------------------------------------------
 Denominator for diluted earnings per share - adjusted
    weighted average shares and assumed conversions                          67,047,064    66,732,496     66,509,121
 ---------------------------------------------------------------------------------------------------------------------
 Basic earnings per share                                                         $3.14         $3.00          $2.67
 ---------------------------------------------------------------------------------------------------------------------
 Diluted earnings per share                                                       $3.01         $2.68          $2.38
 ---------------------------------------------------------------------------------------------------------------------

 (1)  Excludes employee stock options with exercise prices                      855,326        31,970         26,943
      greater than the current market price.


 68

(18) REPORTABLE SEGMENTS

BOK Financial  operates five  principal  lines of business:  Oklahoma  corporate
banking,  Oklahoma consumer banking,  mortgage banking,  wealth management,  and
regional  banking.  Mortgage  banking  activities  include loan  origination and
servicing across all markets served by the Company.  Wealth management  provides
brokerage  and  trading,  private  financial  services and  investment  advisory
services in all  markets.  It also  provides  fiduciary  services in all markets
except  Colorado.  Fiduciary  services  in  Colorado  are  included  in regional
banking.  Regional banking consists  primarily of corporate and consumer banking
activities  in the  respective  local  markets.  In  addition  to its  lines  of
business, BOK Financial has a funds management unit. The primary purpose of this
unit is to manage the  overall  liquidity  needs and  interest  rate risk of the
Company.  Each line of business  borrows  funds from and  provides  funds to the
funds management unit as needed to support their operations.

The Oklahoma  Corporate  Banking  segment  provides loan and lease financing and
treasury and cash  management  services to  businesses  throughout  Oklahoma and
certain  relationships in surrounding  states.  Oklahoma  Corporate Banking also
includes our TransFund unit, which provides ATM and merchant  deposit  services.
The Oklahoma Consumer Banking segment provides a full line of deposit,  loan and
fee-based  services  to  customers   throughout   Oklahoma  through  four  major
distribution channels:  traditional branches,  supermarket branches, the 24-hour
ExpressBank call center and the Internet.  The Mortgage Banking segment consists
of two operating  sectors that originate a full range of mortgage  products from
federally  sponsored  programs to "jumbo  loans" on higher  priced  homes in BOK
Financial's  primary market areas.  The Mortgage  Banking  segment also services
mortgage loans acquired from throughout the United States. The Wealth Management
segment provides a wide range of financial services, including trust and private
financial services and brokerage and trading services. This segment includes the
activities  of  BOSC,  Inc.,  a  registered  broker/dealer.  Trust  and  private
financial  services  include sales of  institutional,  investment and retirement
products,  loans  and  other  services  to  affluent  individuals,   businesses,
not-for-profit  organizations,  and  governmental  agencies.  Trust services are
primarily  provided  to  clients in  Oklahoma,  Texas and New  Mexico.  Regional
banking includes Bank of Texas, Bank of Albuquerque,  Bank of Arkansas, Colorado
State Bank and Trust and Bank of Arizona.  Each of these  banks  provides a full
range of corporate and consumer banking  services in their  respective  markets.
Fiduciary  services  provided through Colorado State Bank and Trust are included
in the Regional Banking segment.

BOK Financial identifies reportable segments by type of service provided for the
Mortgage Banking and the Wealth Management  segments and by type of customer for
the Oklahoma Corporate Banking and Oklahoma Consumer Banking segments.  Regional
Banking is  identified  by legal  entity.  Operating  results are  adjusted  for
intercompany  loan  participations  and allocated  service costs and  management
fees.

BOK Financial  allocates  resources and  evaluates  performance  of its lines of
business after allocation of funds, certain indirect expenses, taxes and capital
costs.  The  cost of  funds  borrowed  from  the  funds  management  unit by the
operating lines of business is transfer priced at rates that approximate  market
for  funds  with  similar  duration.  Market  rates are  generally  based on the
applicable LIBOR or interest rate swap rates, adjusted for prepayment risk. This
method of transfer  pricing funds that support assets of the operating  lines of
business tends to insulate them from interest rate risk.

The value of funds  provided  by the  operating  lines of  business to the funds
management  unit is based on  applicable  Federal Home Loan Bank advance  rates.
Deposit accounts with indeterminate maturities,  such as demand deposit accounts
and  interest-bearing  transaction  accounts,  are transfer  priced at a rolling
average based on expected duration of the accounts. The expected duration ranges
from 90 days for certain  rate-sensitive  deposits to five years. The accounting
policies of the  reportable  segments  generally  follow those  described in the
summary of  significant  accounting  policies,  except that  interest  income is
reported on a fully  tax-equivalent  basis,  loan losses are based on actual net
amounts  charged off and the  amortization  of  intangible  assets is  generally
excluded.

Economic  capital is assigned to the business  units by a third-party  developed
capital  allocation  model that reflects  management's  assessment of risk. This
model  assigns  capital based upon credit,  operating,  interest rate and market
risk inherent in the business lines and recognizes the diversification  benefits
among the units. The level of assigned  economic capital is a combination of the
risk taken by each business line,  based on its actual  exposures and calibrated
to its own loss history where  possible.  Additional  capital is assigned to the
regional  banking line of business based on BOK Financial's  investment in those
entities.

Substantially  all  revenue  is from  domestic  customers.  No  single  external
customer accounts for more than 10% of total revenue.

 69


                                Oklahoma      Oklahoma                                                All
                               Corporate      Consumer      Mortgage     Wealth       Regional      Other/
 (In Thousands)                 Banking        Banking      Banking    Management     Banking    Eliminations     Total
                             ------------------------------------------------------------------------------------------------
 Year ended December 31, 2005

 Net interest revenue/(expense)
                                                                                          
    from external sources       $  191,040    $  (25,140)   $  20,392  $    5,651    $   264,273   $  (6,875)  $   449,341
 Net interest revenue/(expense)
    from internal sources          (60,735)       87,421      (14,979)     11,208        (41,338)     18,423             -
 ----------------------------------------------------------------------------------------------------------------------------
 Total net interest revenue        130,305        62,281        5,413      16,859        222,935      11,548       449,341

 Provision for credit losses         4,757         4,632          416         218          6,195      (3,777)       12,441
 Other operating revenue            92,707        66,266       16,427     100,647         54,719      (1,496)      329,270
 Gain on sales of assets             4,758             -        1,232           -              -           -         5,990
 Capitalized mortgage
    servicing rights                     -             -       17,402           -              -           -        17,402
 Financial instruments
    gains (losses)                       -             -       (5,087)          -            503      (1,132)       (5,716)
 Operating expense                 102,513        84,336       35,315      88,001        150,409      12,447       473,021
 Recovery for impairment of
    mortgage servicing rights            -             -       (3,915)          -              -           -        (3,915)
 Income taxes                       46,875        15,396        1,389      11,397         44,209      (6,031)      113,235
 ----------------------------------------------------------------------------------------------------------------------------
 Net income                     $   73,625    $   24,183    $   2,182    $ 17,890    $    77,344   $   6,281   $   201,505
 ----------------------------------------------------------------------------------------------------------------------------

 Average assets                 $4,629,400    $2,988,218     $526,224  $1,503,886    $ 6,420,498   $(499,371)  $15,568,855

 Average economic capital          322,440        69,810       24,210     106,040        325,000     614,346     1,461,846
 Average invested capital                -             -            -           -        569,800           -             -

 Performance measurements:
    Return on assets                  1.59%         0.81%        0.41%       1.19%          1.20%          -          1.29%
    Return on economic capital       22.83         34.64         9.01       16.87          23.80           -         13.78
    Return on invested capital           -             -            -           -          13.57           -             -
    Efficiency ratio                 45.01         65.61        87.25       74.89          54.17           -         58.98



Reconciliation to Consolidated Financial Statements


                                                 Other         Other
                               Net Interest    Operating     Operating       Net        Average
                                 Revenue       Revenue(1)     Expense      Income       Assets
                              ---------------------------------------------------------------------
                                                                       
 Total reportable segments       $437,793       $354,158      $456,659     $195,224   $16,068,226
 Unallocated items:
    Tax-equivalent adjustment       5,182              -             -        5,182             -
    Funds management               18,543           (709)        7,778       (1,789)    1,688,973
    All others (including
      eliminations), net          (12,177)          (787)        4,669        2,888    (2,188,344)
 --------------------------------------------------------------------------------------------------
 BOK Financial consolidated      $449,341       $352,662      $469,106     $201,505   $15,568,855
 --------------------------------------------------------------------------------------------------

(1)Excluding financial instrument gains/(losses)


 70


                                Oklahoma      Oklahoma                                                All
                               Corporate      Consumer      Mortgage     Wealth       Regional      Other/
 (In Thousands)                 Banking        Banking      Banking    Management     Banking    Eliminations     Total
                             ------------------------------------------------------------------------------------------------
 Year ended December 31, 2004

 Net interest revenue/(expense)
                                                                                           
    from external sources       $  148,919    $  (19,061)   $  21,647    $  4,001    $   200,781   $  66,956   $   423,243
 Net interest revenue/(expense)
    from internal sources          (26,049)       64,873      (11,423)      8,888        (19,753)    (16,536)            -
 ----------------------------------------------------------------------------------------------------------------------------
 Total net interest revenue        122,870        45,812       10,224      12,889        181,028      50,420       423,243

 Provision for credit losses         8,956         6,964          340          23          5,507      (1,351)       20,439
 Other operating revenue            86,493        56,611       22,055      93,193         47,017      (3,282)      302,087
 Capitalized mortgage
    servicing rights                     -             -       11,365           -              -           -        11,365
 Financial instruments
    gains/(losses)                       -             -       (5,068)          -              -         506        (4,562)
 Operating expense                  99,007        76,057       35,415      83,784        132,022      16,506       442,791
 Recovery for impairment of
    mortgage servicing rights            -             -       (1,567)          -              -           -        (1,567)
 Income taxes                       39,444         7,548        1,707       8,688         32,810       1,250        91,447
 ----------------------------------------------------------------------------------------------------------------------------
 Net income                     $   61,956    $   11,854    $   2,681    $ 13,587    $    57,706   $  31,239   $   179,023
 ----------------------------------------------------------------------------------------------------------------------------

 Average assets                 $4,380,491    $2,746,279    $ 559,034   $1,122,147    $5,754,211   $(535,275)  $14,026,887

 Average economic capital          312,530        64,390       27,270      84,820        280,710     527,837     1,297,557
 Average invested capital                -             -            -           -        508,880           -             -

 Performance measurements:
    Return on assets                  1.41%         0.43%        0.48%       1.21%          1.00%          -          1.28%
    Return on economic capital       19.82         18.41         9.83       16.02          20.56           -         13.80
    Return on invested capital           -             -            -           -          11.34           -             -
    Efficiency ratio                 47.29         74.26        81.15       78.98          57.89           -        60.11


Reconciliation to Consolidated Financial Statements


                                                 Other         Other
                               Net Interest    Operating     Operating       Net        Average
                                 Revenue       Revenue(1)       Expense      Income       Assets
                              ---------------------------------------------------------------------
                                                                       
 Total reportable segments       $372,823      $ 316,734      $424,718     $147,784   $14,562,162
 Unallocated items:
    Tax-equivalent adjustment       5,039              -             -        5,039             -
    Funds management               56,432         (3,465)       12,073       19,066     1,590,820
    All others (including
      eliminations), net          (11,051)           183         4,433        7,134    (2,126,095)
 --------------------------------------------------------------------------------------------------
 BOK Financial consolidated      $423,243      $ 313,452       $441,224    $179,023   $14,026,887
 --------------------------------------------------------------------------------------------------

(1)Excluding financial instrument gains/(losses)


 71


                                Oklahoma      Oklahoma                                                All
                               Corporate      Consumer      Mortgage     Wealth       Regional      Other/
 (In Thousands)                 Banking        Banking      Banking    Management     Banking    Eliminations     Total
                             ------------------------------------------------------------------------------------------------
 Year ended December 31, 2003

 Net interest revenue/(expense)
                                                                                          
    from external sources       $  140,818    $  (17,188)   $  27,770    $  1,966    $   168,995   $  69,134   $   391,495
 Net interest revenue/(expense)
    from internal sources          (25,924)       58,261       (9,415)      8,939        (14,801)    (17,060)            -
 ----------------------------------------------------------------------------------------------------------------------------
 Total net interest revenue        114,894        41,073       18,355      10,905        154,194      52,074       391,495

 Provision for credit losses        10,318         6,892          917         390          6,425      10,694        35,636
 Other operating revenue            77,332        47,229       36,379      93,757         37,106      (8,685)      283,118
 Capitalized mortgage
    servicing rights                     -             -       23,922           -              -           -        23,922
 Financial instruments
    gains/(losses)                       -             -        4,025           -            339      (6,551)       (2,187)
 Operating expense                  87,585        66,798       58,204      80,512        119,567      23,695       436,361
 Recovery for impairment of
    mortgage servicing rights            -             -      (22,923)          -              -           -       (22,923)
 Income taxes                       36,692         5,684       18,082       9,243         23,974      (4,761)       88,914
 ----------------------------------------------------------------------------------------------------------------------------
 Net income                     $   57,631    $    8,928    $  28,401    $ 14,517    $    41,673   $   7,210   $   158,360
 ----------------------------------------------------------------------------------------------------------------------------

 Average assets                 $4,106,441    $2,525,060    $ 623,823    $875,661    $ 5,000,039   $(351,608)  $12,779,416

 Average economic capital          311,140        58,000       34,120      69,690        273,600     413,006     1,159,556
 Average invested capital                -             -            -           -        459,780           -             -

 Performance measurements:
    Return on assets                  1.40%         0.35%        4.55%       1.66%          0.83%          -          1.24%
    Return on economic capital       18.52         15.39        83.24       20.83          15.23           -         13.66
    Return on invested capital           -             -            -           -           9.06           -             -
    Efficiency ratio                 45.56         75.65        74.00       76.93          62.50           -         62.47


Reconciliation to Consolidated Financial Statements


                                                 Other         Other
                               Net Interest    Operating     Operating       Net       Average
                                 Revenue       Revenue(1)     Expense      Income       Assets
                              ---------------------------------------------------------------------
                                                                       
 Total reportable segments       $339,421      $ 315,725      $389,743     $151,150   $13,131,024
 Unallocated items:
    Tax-equivalent adjustment       5,170              -             -        5,170             -
    Funds management               59,519         (6,520)       13,946        4,959     1,379,342
    All others (including
      eliminations), net          (12,615)        (2,165)        9,749       (2,919)   (1,730,950)
 --------------------------------------------------------------------------------------------------
 BOK Financial consolidated      $391,495      $ 307,040      $413,438     $158,360   $12,779,416
 --------------------------------------------------------------------------------------------------


(1)Excluding financial instrument gains/(losses)

 72

(19) FAIR VALUE OF FINANCIAL INSTRUMENTS

The following  table  presents the carrying  values and estimated fair values of
financial instruments as of December 31, 2005 and 2004 (dollars in thousands):


                                                                  Range of      Average                    Estimated
                                                   Carrying      Contractual   Repricing     Discount        Fair
                                                     Value         Yields      (in years)      Rate          Value
                                                 ---------------------------------------------------------------------
 2005:
                                                                                         
   Cash and cash equivalents                       $ 699,322                                              $  699,322
   Securities                                      5,085,333                                               5,083,614
   Loans:
      Commercial                                   5,299,935     2.75 -18.00%      0.33    4.61 - 7.25%    5,411,035
      Commercial real estate                       1,989,902     4.00 -12.00       1.21        7.25        1,977,936
      Residential mortgage                         1,169,331     2.82 -12.13       3.29    4.60 - 6.17     1,146,072
      Residential mortgage - held for sale            51,666          -             -           -             51,666
      Consumer                                       629,144     3.04 -18.90       2.38        7.25          623,265
 ---------------------------------------------------------------------------------------------------------------------
        Total loans                                9,139,978                                               9,209,974
        Reserve for loan losses                     (103,876)                                                      -
 ---------------------------------------------------------------------------------------------------------------------
    Net loans                                      9,036,102                                               9,209,974
    Derivative instruments with positive
      fair value                                     452,878                                                 452,878
    Deposits with no stated maturity               7,277,258                                               7,277,258
    Time deposits                                  4,098,060     0.70  - 7.25      1.70    4.25 - 4.90     4,056,480
    Other borrowings                               2,392,209     2.01 -  4.48      1.54    4.37 - 4.61     2,392,255
    Subordinated debentures                          295,964        6.71           8.09        4.48          317,779
    Derivative instruments with negative
      fair value                                     466,669                                                 466,669
 ---------------------------------------------------------------------------------------------------------------------

 2004:
   Cash and cash equivalents                       $ 531,091                                              $  531,091
   Securities                                      4,823,976                                               4,825,518
   Loans:
      Commercial                                   4,575,836     2.71 -15.00%      0.41    2.45 - 6.68%      778,495
      Commercial real estate                       1,621,110     3.50 -15.00       1.08    5.65 - 7.60     1,606,153
      Residential mortgage                         1,198,918     2.82 - 7.96       4.17    5.36 - 6.44     1,154,226
      Residential mortgage - held for sale            40,262          -             -           -             40,262
      Consumer                                       492,841     2.65 -21.00       2.29    4.83 - 8.75       471,863
 ---------------------------------------------------------------------------------------------------------------------
        Total loans                                7,928,967                                               8,050,999
        Reserve for loan losses                     (108,618)                                                      -
 ---------------------------------------------------------------------------------------------------------------------
    Net loans                                      7,820,349                                               8,050,999
    Derivative instruments with positive
      fair value                                     130,297                                                 130,297
    Deposits with no stated maturity               6,030,546                                               6,030,546
    Time deposits                                  3,643,852     0.55 -  7.33      2.34    2.40 - 3.75     3,639,345
    Other borrowings                               2,570,507     2.26 -  5.51      0.05    1.43 - 4.38     2,571,259
    Subordinated debentures                          151,594        5.25           2.60        5.14          153,565
    Derivative instruments with negative
      fair value                                     137,538                                                 137,538
 ---------------------------------------------------------------------------------------------------------------------


The preceding table presents the estimated fair values of financial instruments.
The fair values of certain of these  instruments  were calculated by discounting
expected cash flows, which involved  significant  judgments by management.  Fair
value is the estimated amount at which financial assets or liabilities  could be
exchanged in a current  transaction  between  willing  parties,  other than in a
forced or  liquidation  sale.  Because  no market  exists  for  certain of these
financial  instruments  and management  does not intend to sell these  financial
instruments,  BOK  Financial  does not know  whether the fair values shown above
represent  values at which the respective  financial  instruments  could be sold
individually or in the aggregate.

 73

The following  methods and assumptions were used in estimating the fair value of
these financial instruments:

CASH AND CASH EQUIVALENTS

The  book  value  reported  in the  consolidated  balance  sheet  for  cash  and
short-term instruments approximates those assets' fair values.

SECURITIES

The fair  values  of  securities  are based on  quoted  market  prices or dealer
quotes,  when available.  If quotes are not available,  fair values are based on
quoted prices of comparable instruments.

DERIVATIVES

All derivative  instruments are carried on the balance sheet at fair value. Fair
values for exchange-traded contracts are based on quoted prices. Fair values for
over-the-counter  interest rate,  commodity and foreign  exchange  contracts are
based on valuations  provided  either by  third-party  dealers in the contracts,
quotes  provided by  independent  pricing  services,  or a third-party  provided
pricing model.

LOANS

The fair value of loans,  excluding loans held for sale, are based on discounted
cash flow analyses using interest rates  currently  being offered for loans with
similar remaining terms to maturity and credit risk,  adjusted for the impact of
interest  rate floors and  ceilings.  The fair values of  classified  loans were
estimated to approximate their carrying values less loan loss reserves allocated
to these loans of $15  million  and $28  million at December  31, 2005 and 2004,
respectively.

The fair  values of  residential  mortgage  loans  held for sale are based  upon
quoted  market  prices  of  such  loans  sold  in  securitization  transactions,
including related unfunded loan commitments and hedging transactions.

DEPOSITS

The fair values of time  deposits  are based on  discounted  cash flow  analyses
using interest rates currently being offered on similar transactions.  Statement
of Financial  Accounting  Standards  No. 107,  "Disclosures  about Fair Value of
Financial Instruments," ("FAS 107") defines the estimated fair value of deposits
with no stated maturity,  which includes demand deposits,  transaction deposits,
money  market  deposits  and savings  accounts,  to equal the amount  payable on
demand.  Although market premiums paid reflect an additional value for these low
cost deposits,  FAS 107 prohibits  adjusting fair value for the expected benefit
of these  deposits.  Accordingly,  the positive  effect of such  deposits is not
included in this table.

OTHER BORROWINGS AND SUBORDINATED DEBENTURES

The fair  values  of these  instruments  are  based  upon  discounted  cash flow
analyses using interest rates currently being offered on similar instruments.

OFF-BALANCE SHEET INSTRUMENTS

The fair  values of  commercial  loan  commitments  are based on fees  currently
charged to enter into  similar  agreements,  taking into  account the  remaining
terms of the agreements.  The fair values of these off-balance sheet instruments
were not significant at December 31, 2005 and 2004.

 74

(20) PARENT COMPANY ONLY FINANCIAL STATEMENTS

Summarized  financial  information  for BOK  Financial  -  Parent  Company  Only
follows:

BALANCE SHEETS
 (In Thousands)                                         December 31,
                                               ----------------------------
                                                     2005          2004
                                               ----------------------------
 ASSETS
 Cash and cash equivalents                        $   11,074    $   13,230
 Securities - available for sale                      11,910        11,170
 Investment in subsidiaries                        1,517,047     1,470,405
 Other assets                                          1,729         2,184
 --------------------------------------------------------------------------
    Total assets                                  $1,541,760    $1,496,989
 --------------------------------------------------------------------------
 LIABILITIES AND SHAREHOLDERS' EQUITY
 Other borrowings                                 $        -    $   95,000
 Other liabilities                                     2,606         3,495
 --------------------------------------------------------------------------
    Total liabilities                                  2,606        98,495
 --------------------------------------------------------------------------
 Preferred stock                                           -            12
 Common stock                                              4             4
 Capital surplus                                     656,579       631,747
 Retained earnings                                   990,422       809,261
 Treasury stock                                      (40,040)      (30,905)
 Accumulated other comprehensive loss                (67,811)      (11,625)
 --------------------------------------------------------------------------
    Total shareholders' equity                     1,539,154     1,398,494
 --------------------------------------------------------------------------
    Total liabilities and shareholders' equity    $1,541,760    $1,496,989
 --------------------------------------------------------------------------


STATEMENTS OF EARNINGS
 (In Thousands)
                                                           2005           2004         2003
                                                      -------------------------------------------
                                                                              
 Dividends, interest and fees received from subsidiaries  $153,462       $    127      $ 66,165
 Other operating revenue                                       468             35           431
 ------------------------------------------------------------------------------------------------
    Total revenue                                          153,930            162        66,596
 ------------------------------------------------------------------------------------------------
 Interest expense                                            1,500          2,185         1,771
 Professional fees and services                                589            486           545
 Contribution of stock to BOK Charitable Foundation              -          4,125            -
 Other operating expense                                        22              2            (4)
 ------------------------------------------------------------------------------------------------
    Total expense                                            2,111          6,798         2,312
 ------------------------------------------------------------------------------------------------
 Income (loss) before taxes and equity in undistributed
    income of subsidiaries                                 151,819         (6,636)       64,284
 Federal and state income tax credit                          (682)        (3,953)         (678)
 ------------------------------------------------------------------------------------------------
 Income (loss) before equity in undistributed income of
   subsidiaries                                            152,501         (2,683)       64,962
 Equity in undistributed income of subsidiaries             49,004        181,706        93,398
 ------------------------------------------------------------------------------------------------
 Net income                                               $201,505       $179,023      $158,360
 ------------------------------------------------------------------------------------------------


 75


STATEMENTS OF CASH FLOWS
 (In Thousands)
                                                             2005         2004         2003
                                                         ----------------------------------------
 CASH FLOWS FROM OPERATING ACTIVITIES:
                                                                             
    Net income                                              $201,505     $179,023     $158,360
    Adjustments to reconcile net income to net cash
      provided by operating activities:
        Equity in undistributed income of subsidiaries       (49,004)    (181,706)     (93,398)
        Tax benefit on exercise of stock options               3,583        4,609        1,325
        Contribution of stock to BOK Charitable Foundation         -        4,125            -
        Write down of equity securities                            -          410            -
        Change in other assets                               (12,337)      (5,138)        (944)
        Change in other liabilities                             (889)         713          272
 ------------------------------------------------------------------------------------------------
 Net cash provided by operating activities                   142,858        2,036       65,615
 ------------------------------------------------------------------------------------------------
 CASH FLOWS FROM INVESTING ACTIVITIES:
    Purchases of available for sale securities                     -          (53)         (27)
    Investment in subsidiaries                               (34,264)      (5,250)     (85,015)
 ------------------------------------------------------------------------------------------------
 Net cash used by investing activities                       (34,264)      (5,303)     (85,042)
 ------------------------------------------------------------------------------------------------
 CASH FLOWS FROM FINANCING ACTIVITIES:
    Increase in other borrowings                                   -            -      105,000
    Pay down of other borrowings                             (95,000)           -      (95,000)
    Issuance of preferred, common and treasury stock, net      7,032        7,132        4,627
    Cash dividends                                           (20,343)      (1,540)        (785)
    Other                                                     (2,439)          24            -
 ------------------------------------------------------------------------------------------------
 Net cash provided (used) by financing activities           (110,750)       5,616       13,842
 ------------------------------------------------------------------------------------------------
 Net change in cash and cash equivalents                      (2,156)       2,349       (5,585)
 Cash and cash equivalents at beginning of period             13,230       10,881       16,466
 ------------------------------------------------------------------------------------------------
 CASH AND CASH EQUIVALENTS AT END OF PERIOD                 $ 11,074     $ 13,230     $ 10,881
 ------------------------------------------------------------------------------------------------

 PAYMENT OF DIVIDENDS IN COMMON STOCK                       $      -     $ 65,899     $ 58,300
 ------------------------------------------------------------------------------------------------
 CASH PAID FOR INTEREST                                        1,698        1,882        1,947
 ------------------------------------------------------------------------------------------------


 76

ANNUAL FINANCIAL SUMMARY - UNAUDITED

CONSOLIDATED DAILY AVERAGE BALANCES,
AVERAGE YIELDS AND RATES


 (Dollars in Thousands)                                                                              2005
                                                                                -----------------------------------------------
                                                                                    Average       Revenue/         Yield/
                                                                                    Balance       Expense (1)       Rate
                                                                                -----------------------------------------------
 ASSETS
                                                                                                         
    Taxable securities (3)                                                         $ 4,769,666      $205,952         4.34%
    Tax-exempt securities (3)                                                          226,961        11,587         5.13
 ------------------------------------------------------------------------------------------------------------------------------
      Total securities (3)                                                           4,996,627       217,539         4.38
 ------------------------------------------------------------------------------------------------------------------------------
    Trading securities                                                                  15,892           770         4.85
    Funds sold and resell agreements                                                    38,521         1,287         3.34
    Loans (2)                                                                        8,489,751       555,520         6.54
      Less reserve for loan losses                                                     110,158             -          -
 ------------------------------------------------------------------------------------------------------------------------------
    Loans, net of reserve                                                            8,379,593       555,520         6.63
 ------------------------------------------------------------------------------------------------------------------------------
      Total earning assets (3)                                                      13,430,633       775,116         5.78
 ------------------------------------------------------------------------------------------------------------------------------
    Cash and other assets                                                            2,138,222
 ------------------------------------------------------------------------------------------------------------------------------
      Total assets                                                                 $15,568,855
 ------------------------------------------------------------------------------------------------------------------------------
 LIABILITIES AND SHAREHOLDERS' EQUITY
    Transaction deposits                                                           $ 4,402,810      $ 72,721         1.65%
    Savings deposits                                                                   159,429         1,106         0.69
    Time deposits                                                                    3,894,429       136,573         3.51
 ------------------------------------------------------------------------------------------------------------------------------
      Total interest-bearing deposits                                                8,456,668       210,400         2.49
 ------------------------------------------------------------------------------------------------------------------------------
    Funds purchased and repurchase agreements                                        1,936,792        61,606         3.18
    Other borrowings                                                                   996,266        34,220         3.43
    Subordinated debenture                                                             236,589        14,367         6.07
 ------------------------------------------------------------------------------------------------------------------------------
      Total interest-bearing liabilities                                            11,626,315       320,593         2.76
 ------------------------------------------------------------------------------------------------------------------------------
    Demand deposits                                                                  1,607,702
    Other liabilities                                                                  872,992
    Shareholders' equity                                                             1,461,846
 ------------------------------------------------------------------------------------------------------------------------------
      Total liabilities and shareholders' equity                                   $15,568,855
 ------------------------------------------------------------------------------------------------------------------------------

 TAX-EQUIVALENT NET INTEREST REVENUE (3)                                                            $454,523         3.02%
 TAX-EQUIVALENT NET INTEREST REVENUE TO EARNING ASSETS (3)                                                           3.39
 Less tax-equivalent adjustment (1)                                                                    5,182
 ------------------------------------------------------------------------------------------------------------------------------
 NET INTEREST REVENUE                                                                                449,341
 Provision for credit losses                                                                          12,441
 Other operating revenue                                                                             346,946
 Other operating expense                                                                             469,106
 ------------------------------------------------------------------------------------------------------------------------------
 INCOME BEFORE TAXES                                                                                 314,740
 Federal and state income tax                                                                        113,235
 ------------------------------------------------------------------------------------------------------------------------------
 NET INCOME                                                                                         $201,505
 ------------------------------------------------------------------------------------------------------------------------------


(1)Tax equivalent at the statutory federal and state rates for the periods
   presented. The taxable equivalent adjustments shown are for comparative
   purposes.
(2)The loan averages included loans on which the accrual of interest has been
   discontinued and are stated net of unearned income. See Note 1 of Notes to
   the Consolidated Financial Statements for a description of income recognition
   policy.
(3)Yield calculations exclude security trades that have been recorded on trade
   date with no corresponding interest income.

 77


                      2004                                                   2003
 ------------------------------------------------------------------------------------------------------
     Average       Revenue/         Yield/                 Average        Revenue/         Yield/
     Balance       Expense1          Rate                  Balance        Expense1          Rate
 -----------------------------------------------       ------------------------------------------------

                                                                              
    $ 4,656,108      $197,884         4.26%               $ 4,316,303       $180,581         4.22%
        207,376        11,672         5.64                    191,982         12,527         6.59
 ------------------------------------------------------------------------------------------------------
      4,863,484       209,556         4.32                  4,508,285        193,108         4.32
 ------------------------------------------------------------------------------------------------------
         16,025           629         3.93                     16,975            694         4.09
         19,944           353         1.77                     26,330            281         1.07
      7,644,049       408,785         5.35                  7,101,543        376,260         5.30
        116,076             -          -                      110,791              -          -
 ------------------------------------------------------------------------------------------------------
      7,527,973       408,785         5.43                  6,990,752        376,260         5.38
 ------------------------------------------------------------------------------------------------------
     12,427,426       619,323         4.99                 11,542,342        570,343         4.96
 ------------------------------------------------------------------------------------------------------
      1,599,461                                             1,237,074
 ------------------------------------------------------------------------------------------------------
    $14,026,887                                           $12,779,416
 ------------------------------------------------------------------------------------------------------

    $ 3,863,276      $ 35,517         0.92%               $ 3,605,539       $ 31,346         0.87%
        169,556           975         0.58                    172,938            944         0.55
      3,584,496       107,941         3.01                  3,439,361         99,639         2.90
 ------------------------------------------------------------------------------------------------------
      7,617,328       144,433         1.90                  7,217,838        131,929         1.83
 ------------------------------------------------------------------------------------------------------
      1,611,771        21,140         1.31                  1,537,100         15,590         1.01
      1,007,237        17,707         1.76                  1,051,685         16,682         1.59
        152,983         7,761         5.07                    154,940          9,477         6.12
 ------------------------------------------------------------------------------------------------------
     10,389,319       191,041         1.84                  9,961,563        173,678         1.74
 ------------------------------------------------------------------------------------------------------
      1,805,558                                             1,309,744
        534,453                                               348,553
      1,297,557                                             1,159,556
 ------------------------------------------------------------------------------------------------------
    $14,026,887                                           $12,779,416
 ------------------------------------------------------------------------------------------------------
                     $428,282         3.15%                                 $396,665         3.22%
                                      3.45                                                   3.44
                        5,039                                                  5,170
 ------------------------------------------------------------------------------------------------------
                      423,243                                                391,495
                       20,439                                                 35,636
                      308,890                                                304,853
                      441,224                                                413,438
 ------------------------------------------------------------------------------------------------------
                      270,470                                                247,274
                       91,447                                                 88,914
 ------------------------------------------------------------------------------------------------------
                     $179,023                                               $158,360
 ------------------------------------------------------------------------------------------------------


 78

QUARTERLY FINANCIAL SUMMARY - UNAUDITED

CONSOLIDATED DAILY AVERAGE BALANCES,
AVERAGE YIELDS AND RATES


(Dollars in Thousands Except Per Share Data)

                                                                                 Three Months Ended
                                                      -------------------------------------------------------------------------
                                                              December 31, 2005                      September 30, 2005
                                                      ----------------------------------     ----------------------------------
                                                         Average     Revenue/   Yield/          Average    Revenue/    Yield/
                                                         Balance     Expense(1)  Rate           Balance    Expense(1)   Rate
                                                      ----------------------------------     ----------------------------------
  ASSETS
                                                                                                       
     Taxable securities (3)                             $ 4,816,263  $ 53,375     4.44%       $ 4,800,698  $ 51,946      4.28%
     Tax-exempt securities (3)                              243,521     3,046     5.05            231,097     2,888      4.96
  --------------------------------------------------------------------------------------     ----------------------------------
       Total securities (3)                               5,059,784    56,421     4.47          5,031,795    54,834      4.31
  --------------------------------------------------------------------------------------     ----------------------------------
     Trading securities                                      20,595       243     4.68             14,560       171      4.66
     Funds sold and resell agreements                        57,656       581     4.00             44,882       386      3.41
     Loans (2)                                            9,005,546   158,387     6.98          8,635,732   144,954      6.66
       Less reserve for loan losses                         108,998         -       -             109,840         -        -
  --------------------------------------------------------------------------------------     ----------------------------------
     Loans, net of reserve                                8,896,548   158,387     7.06          8,525,892   144,954      6.75
  --------------------------------------------------------------------------------------     ----------------------------------
       Total earning assets (3)                          14,034,583   215,632     6.12         13,617,129   200,345      5.83
  --------------------------------------------------------------------------------------     ----------------------------------
     Cash and other assets                                2,131,047                             1,970,746
  --------------------------------------------------------------------------------------     ----------------------------------
       Total assets                                     $16,165,630                           $15,587,875
  --------------------------------------------------------------------------------------     ----------------------------------
  LIABILITIES AND SHAREHOLDERS' EQUITY
     Transaction deposits                               $ 4,821,627  $ 24,075     1.98%       $ 4,533,912  $ 18,968      1.66%
     Savings deposits                                       154,316       292     0.75            157,772       280      0.70
     Time deposits                                        4,216,625    40,083     3.77          3,958,948    35,255      3.53
  --------------------------------------------------------------------------------------     ----------------------------------
       Total interest-bearing deposits                    9,192,568    64,450     2.78          8,650,632    54,503      2.50
  --------------------------------------------------------------------------------------     ----------------------------------
     Funds purchased and repurchase agreements            1,812,752    17,914     3.92          2,067,432    17,738      3.40
     Other borrowings                                     1,049,635    10,807     4.08          1,047,423     9,510      3.60
     Subordinated debenture                                 296,021     4,683     6.28            297,284     4,477      5.97
  --------------------------------------------------------------------------------------     ----------------------------------
       Total interest-bearing liabilities                12,350,976    97,854     3.14         12,062,771    86,228      2.84
  --------------------------------------------------------------------------------------     ----------------------------------
     Demand deposits                                      1,530,504                             1,424,102
     Other liabilities                                      777,111                               613,667
     Shareholders' equity                                 1,507,039                             1,487,335
  --------------------------------------------------------------------------------------     ----------------------------------
       Total liabilities and shareholders' equity       $16,165,630                           $15,587,875
  --------------------------------------------------------------------------------------     ----------------------------------
  TAX-EQUIVALENT NET INTEREST REVENUE (3)                            $117,778     2.98%                    $114,117      2.99%
  TAX-EQUIVALENT NET INTEREST REVENUE TO EARNING ASSETS (3)                       3.34                                   3.32
  Less tax-equivalent adjustment (1)                                    1,392                                 1,289
  --------------------------------------------------------------------------------------     ----------------------------------
  NET INTEREST REVENUE                                                116,386                               112,828
  Provision for credit losses                                           4,450                                 3,976
  Other operating revenue                                              87,344                                86,855
  Other operating expense                                             123,903                               117,034
  --------------------------------------------------------------------------------------     ----------------------------------
  INCOME BEFORE TAXES                                                  75,377                                78,673
  Federal and state income tax                                         27,219                                27,846
  --------------------------------------------------------------------------------------     ----------------------------------
  NET INCOME                                                         $ 48,158                              $ 50,827
  --------------------------------------------------------------------------------------     ----------------------------------
  EARNINGS PER AVERAGE COMMON SHARE EQUIVALENT:
     Net income:
       Basic                                                            $0.72                                $0.77
  --------------------------------------------------------------------------------------     ----------------------------------
       Diluted                                                          $0.72                                $0.76
  --------------------------------------------------------------------------------------     ----------------------------------


(1)Tax equivalent at the statutory federal and state rates for the periods
   presented. The taxable equivalent adjustments shown are for comparative
   purposes.
(2)The loan averages included loans on which the accrual of interest has been
   discontinued and are stated net of unearned income. See Note 1 of Notes to
   the Consolidated Financial Statements for a description of income recognition
   policy.
(3)Yield calculations exclude security trades that have been recorded on trade
   date with no corresponding interest income.

 79


                                               Three Months Ended
 --------------------------------------------------------------------------------------------------------------
           June 30, 2005                        March 31, 2005                       December 31, 2004
 ----------------------------------   -----------------------------------   -----------------------------------
    Average    Revenue/   Yield/         Average    Revenue/    Yield/         Average    Revenue/    Yield/
    Balance    Expense(1)  Rate          Balance    Expense(1)   Rate          Balance    Expense(1)   Rate
 ----------------------------------   -----------------------------------   -----------------------------------

                                                                                
 $  4,831,186 $  51,275      4.32%    $  4,628,233 $  49,356      4.32%     $  4,709,193 $  50,200      4.25%
      215,360     2,810      5.23          217,571     2,843      5.30           219,873     2,951      5.37
 ----------------------------------   -----------------------------------   -----------------------------------
    5,046,546    54,085      4.36        4,845,804    52,199      4.36         4,929,066    53,151      4.30
 ----------------------------------   -----------------------------------   -----------------------------------
       11,639       165      5.69           17,205       191      4.50            10,208       107      4.17
       21,170       156      2.96           30,003       164      2.22            31,994       170      2.11
    8,341,490   133,173      6.40        7,963,177   119,006      6.06         7,873,974   111,292      5.62
      111,056         -        -           111,955         -        -            114,106         -        -
 ----------------------------------   -----------------------------------   -----------------------------------
    8,230,434   133,173      6.49        7,851,222   119,006      6.15         7,759,868   111,292      5.71
 ----------------------------------   -----------------------------------   -----------------------------------
   13,309,789   187,579      5.68       12,744,234   171,560      5.46        12,731,136   164,720      5.15
 ----------------------------------   -----------------------------------   -----------------------------------
    1,750,686                            1,474,621                             1,598,935
 ----------------------------------   -----------------------------------   -----------------------------------
 $ 15,060,475                         $ 14,218,855                          $ 14,330,071
 ----------------------------------   -----------------------------------   -----------------------------------
 $  4,323,513 $  16,049      1.49%    $   3,920,844$  13,629      1.41%     $   3,841,742$  10,779      1.12%
      166,426       285      0.69          159,276       249      0.63           160,404       231      0.57
    3,710,338    31,499      3.41        3,685,257    29,736      3.27         3,662,455    29,586      3.21
 ----------------------------------   -----------------------------------   -----------------------------------
    8,200,277    47,833      2.34        7,765,377    43,614      2.28         7,664,601    40,596      2.11
 ----------------------------------   -----------------------------------   -----------------------------------
    2,160,031    15,764      2.93        1,704,327    10,190      2.42         1,747,391     8,397      1.91
      914,968     7,224      3.17          971,616     6,679      2.79         1,005,679     5,703      2.26
      200,038     2,980      5.98          150,752     2,227      5.99           152,634     1,929      5.03
 ----------------------------------   -----------------------------------   -----------------------------------
   11,475,314    73,801      2.58       10,592,072    62,710      2.40        10,570,305    56,625      2.13
 ----------------------------------   -----------------------------------   -----------------------------------
    1,586,248                            1,895,989                             1,938,205
      558,655                              319,375                               453,571
    1,440,258                            1,411,419                             1,367,990
 ----------------------------------   -----------------------------------   -----------------------------------
 $ 15,060,475                         $ 14,218,855                          $ 14,330,071
 ----------------------------------   -----------------------------------   -----------------------------------
              $ 113,778      3.10%                 $ 108,850      3.06%                  $ 108,095      3.02%
                             3.45                                 3.46                                  3.38
                  1,245                                1,256                                 1,633
 ----------------------------------   -----------------------------------   -----------------------------------
                112,533                              107,594                               106,462
                  2,015                                2,000                                 4,439
                 94,591                               78,156                                78,714
                126,010                              102,159                               111,582
 ----------------------------------   -----------------------------------   -----------------------------------
                 79,099                               81,591                                69,155
                 28,634                               29,536                                22,599
 ----------------------------------   -----------------------------------   -----------------------------------
              $  50,465                            $  52,055                             $  46,556
 ----------------------------------   -----------------------------------   -----------------------------------


                 $0.79                                $0.87                                 $0.78
 ----------------------------------   -----------------------------------   -----------------------------------
                 $0.75      `                         $0.78                                 $0.70
 ----------------------------------   -----------------------------------   -----------------------------------





BOK Financial Corporation Board of Directors

Gregory S. Allen (1)
President & CEO
Advance Food Co., Inc.
Photo of Gregory S. Allen shown here.

C. Fred Ball, Jr. (2)
Chairman & CEO
Bank of Texas, N.A.
Photo of C. Fred Ball, Jr. shown here.

Sharon J. Bell (1)
Managing Partner
Rogers & Bell
Photo of Sharon J. Bell shown here.

Peter C. Boylan, III (1)
CEO
Boylan Partners, LLC
Photo of Peter C. Boylan, III shown here.

Chester Cadieux, III (1)
President & CEO
QuikTrip Corporation
Photo of Chester Cadieux, III shown here.

Joseph E. Cappy (1)
Retired Chairman & CEO
Dollar Thrifty Automotive Group
Photo of Joseph E. Cappy shown here.

William E. Durrett
Senior Chairman
American Fidelity Corp.
Photo of William E. Durrett shown here.

Robert G. Greer (2)
Vice Chairman
Bank of Texas, N.A.
Photo of Robert G. Greer shown here.

David F. Griffin (1)
President & General Manager
Griffin Communications, L.L.C.
Photo of David F. Griffin shown here.

V. Burns Hargis (1)
Vice Chairman
BOK Financial Corporation and
Bank of Oklahoma, N.A.
Photo of V. Burns Hargis shown here.



E. Carey Joullian, IV (1)
President & CEO
Mustang Fuel Corporation
Photo of E. Carey Joullian, IV shown here.

George B. Kaiser (1)
Chairman
BOK Financial Corporation and
Bank of Oklahoma, N.A.
Photo of George B. Kaiser shown here.

Judith Z. Kishner (1)
Manager
Zarrow Family Office, L.L.C.
Photo of Judith Z. Kishner shown here.

David L. Kyle (1)
Chairman, President & CEO
ONEOK, Inc.
Photo of David L. Kyle shown here.

Robert J. LaFortune
Personal Investments
Photo of Robert J. LaFortune shown here.

Stanley A. Lybarger (1),(2)
President & CEO
BOK Financial Corporation and
Bank of Oklahoma, N.A.
Photo of Stanley A. Lybarger shown here.

Steven J. Malcolm (1)
Chairman, President & CEO
The Williams Companies, Inc.
Photo of Steven J. Malcolm shown here.

Paula Marshall-Chapman (1)
CEO
Bama Companies
Photo of Paula Marshall-Chapman shown here.

James A. Robinson
Personal Investments
Photo of James A. Robinson shown here.

(1) Director of BOK Financial Corporation and Bank of Oklahoma, N.A.
(2) Director of BOK Financial Corporation and Bank of Texas, N.A.



Bank of Albuquerque, N.A. Board of Directors

Adelmo Archuleta
Owner, Professional Engineer
Molzen-Corbin & Associates

Suzanne Barker-Kalangis, Esq.
Partner, Modrall, Sperling, Roehl,
Harris and Sisk P.A.

Steven G. Bradshaw
Sr. Executive Vice President
BOK Financial Corporation

Charles E. Cotter
Executive Vice President
BOK Financial Corporation

Rudy A. Davalos
Athletic Director
University of New Mexico

William E. Garcia
Retired Sr. Manager, Public Affairs
Intel Corporation

Robert M. Goodman
Vice Chairman
Bank of Albuquerque, N.A.

Thomas D. Growney
President
Tom Growney Equipment, Inc.

Larry F. Levy
Senior Vice President
Bank of Albuquerque, N.A.

W. Jeffrey Pickryl
Sr. Executive Vice President
BOK Financial Corporation

Mark E. Sauters
Senior Vice President
Bank of Albuquerque, N.A.

Michael D. Sivage
Chief Executive Officer
STH Investments, Inc.

Paul A. Sowards
President
Bank of Albuquerque, N.A.

Jennifer S. Thomas
Executive Vice President
Bank of Albuquerque, N.A.

James F. Ulrich
Chairman & CEO
Bank of Albuquerque, N.A.

Bank of Arkansas, N.A. Board of Directors

John W. Anderson
Senior Vice President
Bank of Oklahoma, N.A.

Jett C. Cato
Executive Vice President
Bank of Arkansas, N.A.

Jeff D. Cude
Senior Vice President
Bank of Arkansas, N.A.

Jeffrey R. Dunn
Chairman, President & CEO
Bank of Arkansas, N.A.

Mark W. Funke
President
Bank of Oklahoma, N.A.
Oklahoma City

Ronald E. Leffler
Senior Vice President
Bank of Oklahoma, N.A.



Bank of Arizona, N.A. Board of Directors

Gregory S. Anderson
Vice Chairman
Bank of Arizona, N.A.

Charles E. Cotter
Executive Vice President
BOK Financial Corporation

Scott D. LeMarr
President
Polo Cristi Companies

Steven E. Nell
EVP, Chief Financial Officer
BOK Financial Corporation

W. Jeffrey Pickryl
Sr. Executive Vice President
BOK Financial Corporation

David Ralston
Chairman
Bank of Arizona, N.A.

Dr. David Righi
Physician
Valley Anesthesiology Consultants

James A. Sharp, Jr.
Owner
Oval Transportation Services

Dr. Anthony T. Yeung
Surgeon
Arizona Institute for
Minimally Invasive Spine Care



Bank of Texas, N.A. Board of Directors

C. Thomas Abbott
Vice Chairman
Bank of Texas, N.A. - Dallas

C. Fred Ball, Jr.
Chairman & CEO
Bank of Texas, N.A. - Dallas

C. Huston Bell
Retired President
The Vantage Companies

Edward O. Boshell, Jr.
Retired, Columbia General
Investments, LP

Steven G. Bradshaw
Sr. Executive Vice President
BOK Financial Corporation

R. Neal Bright
Managing Partner
Bright & Bright, LLP

H. Lynn Craft
President & CEO
Baptist Foundation of Texas

Charles W. Eisemann
Personal Investments

James J. Ellis
Managing Partner
Ellis/Roiser Associates

Robert G. Greer
Vice Chairman
Bank of Texas, N.A. - Houston

R. William Gribble, Jr.
President
Gribble Oil Company

J. T. Hairston, Jr.
Personal Investments

Douglas D. Hawthorne
President & CEO
Texas Health Resources

Bill D. Henry
Chairman & CEO
McQuery Henry Bowles Troy, LLP

Richard W. Jochetz
President
Bank of Texas, N.A. - Houston

Stanley A. Lybarger
President & CEO
BOK Financial Corporation

Albert W. Niemi, Jr.
Dean, Cox School of Business
Southern Methodist University

W. Jeffrey Pickryl
Sr. Executive Vice President
BOK Financial Corporation

Thomas S. Swiley
President & COO
Bank of Texas, N.A. - Dallas

Mrs. Jere W. Thompson
Community Leader

Tom E. Turner
Retired Chairman
Bank of Texas, N.A. - Dallas

John C. Vogt
Personal Investments

Randall Walker
Chairman
Bank of Texas, N.A. - Houston


Colorado State Bank and Trust, N.A. Board of Directors (CSBT)

Aaron K. Azari
Executive Vice President
CSBT

Steven Caulkins, III
Principal
Greendeck Capital

Joel H. Farkas
Chairman
JF Companies

Thomas M. Foncannon
Senior Vice President
CSBT

H. James Holloman
Executive Vice President
Bank of Oklahoma, N.A.

Richard H. Lewis
Personal Investments

Kirk McDonald
CEO, President
Denver Newspaper Corp.

W. Jeffrey Pickryl
Sr. Executive Vice President
BOK Financial Corporation

Gregory K. Symons
Chairman & CEO
CSBT



Shareholder Information

Corporate Headquarters:
Bank of Oklahoma Tower
P.O. Box 2300
Tulsa, Oklahoma 74192
(918) 588-6000

Independent Auditors:
Ernst & Young LLP
1700 One Williams Center
Tulsa, Oklahoma 74172
(918) 560-3600

Legal Counsel:
Frederic Dorwart Lawyers
Old City Hall
124 E. Fourth St.
Tulsa, Oklahoma 74103-5010
(918) 583-9922

Common Shares:
Traded NASDAQ National Market
NASDAQ Symbol: BOKF
Number of common shareholders of record at
December 31, 2005: 1,199

Market Makers:
Archipelago Exchange (The)
Boston Stock Exchange
Citadel Derivatives Group LLC
Citigroup Global Markets Inc.
Credit Research & Trading
Credit Suisse First Boston
Friedman Billings Ramsey & Co
Goldman, Sachs & Co.
GVR Company LLC
Harris Nesbitt Corp.
Howe Barnes Investments, Inc.
Jefferies & Company, Inc.
Keefe, Bruyette & Woods, Inc.
Knight Equity Markets, L.P.
Lehman Brothers Inc.
Merrill Lynch, Pierce, Fenner
Morgan Stanley & Co., Inc.
National Stock Exchange
Piper Jaffray Companies Inc.
Sandler O'Neill & Partners
Schwab Capital Markets
Stephens Inc.
SunTrust Robinson Humphrey Capital Markets
Susquehanna Capital Group
The Robinson Humphrey Co.
UBS Securities LLC

Transfer Agent and Registrar
SunTrust Bank  (800) 568-3476

Address Shareholder Inquiries
Send certificates for transfer and address
changes to:

BY MAIL:
SunTrust Bank
P.O. Box 4625
Atlanta, GA 30303

BY HAND OR OVERNIGHT COURIER:
SunTrust Bank
Stock Transfer Department
58 Edgewood Avenue, Room 225
Atlanta, GA 30303

Copies of BOK Financial  Corporation's Annual Report to Shareholders,  Quarterly
Reports and Form 10-K to the  Securities  and Exchange  Commission are available
without charge upon written request. Analysts,  shareholders and other investors
seeking  financial  information  about BOK Financial  Corporation are invited to
contact Stacy C. Kymes, Senior Vice President, (918) 588-6752.

Information  about BOK  Financial  is also  readily  available  at our  website:
www.bokf.com