As filed with the Securities and Exchange Commission on August 9, 2006
 ==============================================================================
                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-Q

(Mark One)

|X|   QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
      EXCHANGE ACT OF 1934

        For the quarterly period ended June 30, 2006

                                       OR

|_|   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
      EXCHANGE ACT OF 1934

        For the transition period from _____________ to ______________


                           Commission File No. 0-19341

                            BOK FINANCIAL CORPORATION
             (Exact name of registrant as specified in its charter)


             Oklahoma                                         73-1373454
   (State or other jurisdiction                             (IRS Employer
of Incorporation or Organization)                        Identification No.)

         Bank of Oklahoma Tower
             P.O. Box 2300
            Tulsa, Oklahoma                                      74192
(Address of Principal Executive Offices)                      (Zip Code)

                                 (918) 588-6000
              (Registrant's telephone number, including area code)

     Indicate  by check mark  whether the  registrant  (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days. Yes |X| No |_|

     Indicate by check mark whether the registrant is a large accelerated filer,
an accelerated filer, or a non-accelerated filer. See definition of "accelerated
filer and large  accelerated  filer" in Rule 12b-2 of the Exchange  Act.  (Check
one):

Large accelerated filer  |X| Accelerated filer  |_|  Non-accelerated filer  |_|

     Indicate  by check mark  whether  the  registrant  is a shell  company  (as
defined in Rule 12b-2 of the Act). Yes |_| No |X|

     Indicate the number of shares  outstanding of each of the issuer's  classes
of common stock, as of the latest practicable date:  66,850,046 shares of common
stock ($.00006 par value) as of July 31, 2006.

===============================================================================
 2

                            BOK Financial Corporation
                                    Form 10-Q

                           Quarter Ended June 30, 2006


                                      Index

Part I.  Financial Information

     Management's Discussion and Analysis (Item 2)                           2
     Market Risk (Item 3)                                                   26
     Controls and Procedures (Item 4)                                       28
     Consolidated Financial Statements - Unaudited (Item 1)                 29
     Six Month Financial Summary - Unaudited (Item 2)                       39
     Quarterly Financial Summary - Unaudited (Item 2)                       40

Part II.  Other Information

     Item 2. Unregistered Sales of Equity Securities and Use of Proceeds    42
     Item 4. Submission of Matters to a Vote of Security Holders            43
     Item 6. Exhibits                                                       43

Signatures                                                                  44

Management's Discussion and Analysis of Financial Condition and Results
of Operations

Performance Summary

BOK Financial Corporation ("BOK Financial" or the "Company") reported net income
of $55.0  million,  or $0.82 per diluted  share for the second  quarter of 2006,
compared with $50.5  million,  or $0.75 per diluted share for the second quarter
of 2005. The annualized returns on average assets and shareholders'  equity were
1.33% and 14.03%,  respectively  for 2006,  compared  with  returns of 1.31% and
14.05%,  respectively  for 2005.  Net  income  for the  second  quarter  of 2005
included  gains of $3.8  million  or $0.06 per  diluted  share from sales of the
Company's  interest  in an  Oklahoma  City  office  building  and on the sale of
certain  mortgage  loans which were not part of the Company's  ongoing  mortgage
banking business.

Highlights of the quarter included:

o    Outstanding  loans at June 30, 2006 grew $1.3 billion or 15% since June 30,
     2005, including $593 million since March 31, 2006

o    Average deposits  increased 14% from the second quarter of 2005,  exceeding
     average loan growth by $284 million

o    Stable net interest margin

o    Fee  revenues  increased  8%  compared  with the  second  quarter of 2005

o    Operating  expense  increase managed at a 6% level compared with the second
     quarter of 2005

o    Near historical low non-performing loans; strong allowance for loan losses

Net interest revenue grew $8.6 million or 8% over 2005. Average outstanding loan
balances  increased  $1.1  billion or 14% and average  deposits  increased  $1.4
billion or 14%. Fees and commission  revenue increased $6.9 million,  or 8% over
the second quarter of 2005. Transaction card revenue and trust revenue grew $2.0
million and $1.5 million,  respectively.  Other revenue  increased $2.8 million,
including $1.6 million from fees earned on margin assets.

Operating expenses increased $6.8 million or 6% over the second quarter of 2005,
excluding  changes in the value of mortgage  servicing  rights.  Personnel costs
increased  $7.0 million due largely to a $4.5  million  increase in salaries and
wages and a $2.7 million increase in incentive  compensation.  The fair value of
mortgage  servicing  rights  increased $3.6 million during the second quarter of
2006 due to rising  interest  rates.  At the same time,  rising  interest  rates
decreased  the  value  of  securities  held as an  economic  hedge  of  mortgage
servicing rights $2.5 million for a net gain of $1.1 million.

 3

Non-performing  loans totaled $31 million or 0.32% of outstanding  loans at June
30, 2006  compared with $41 million or 0.48 % of  outstanding  loans at June 30,
2005. The combined  allowance for loan losses and reserve for off-balance  sheet
credit  losses  totaled $126 million or 1.30% of  outstanding  loans,  excluding
mortgage  loans  held for sale,  at June 30,  2006 and $127  million or 1.50% of
outstanding  loans at June 30, 2005.  The  provision  for credit losses was $3.8
million for the second quarter of 2006 and $2.0 million for the same period last
year.

Net income for the first half of 2006 totaled $109.7 million, up $7.2 million or
7% over 2005.  Net interest  revenue grew $18.3 million or 8% due primarily to a
$1.2 billion  increase in average loans.  Fee income  increased $17.9 million or
11%. All categories of fee income  increased over 2005 except  mortgage  banking
revenue which  decreased $144 thousand or 1%. Other revenue grew $6.2 million or
40% due primarily to a $3.5 million increase in fees on margin assets. Operating
expenses  increased  $23.5  million  or 10%,  excluding  changes in the value of
mortgage  servicing  rights due to a $19.8 million  increase in personnel costs.
Appreciation  in the  value of  mortgage  servicing  rights,  net of  losses  on
economic hedges, provided $4.0 million of net income in the first half of 2006.

The  Company  is  establishing  a new  regional  bank in  Kansas  City.  Initial
operations  are  expected  to begin in the fourth  quarter  of 2006,  subject to
regulatory approval.

Results of Operations

Net Interest Revenue

Tax-equivalent  net interest revenue  increased to $122.7 million for the second
quarter of 2006 from $113.8 million for 2005, due primarily to a $1.1 billion or
14%  increase in average  outstanding  loan  principal.  Average loan growth was
funded by a $1.4  billion or 14%  increase  in average  deposits.  The excess of
average  deposits over average loans of $284 million  reduced other  borrowings,
generally  a  higher-costing  source of funds.  Table 1 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.

Net interest margin, the ratio of tax-equivalent net interest revenue to average
earning assets was 3.40% for the second quarter of 2006, compared with 3.45% for
the second  quarter of 2005 and 3.39% for the first  quarter of 2006.  Yields on
average earning assets  continued to trend upwards due to rising market interest
rates.  The yield on  average  earning  assets was  6.71%,  up 103 basis  points
compared with the second  quarter of 2005 and 29 basis points over the preceding
quarter.  The yield on average  outstanding loans was 7.68%, up 128 basis points
over the second  quarter of 2005 and 33 basis  points over the first  quarter of
2006. The tax-equivalent yield on securities was 4.77% for the second quarter of
2006, compared with 4.36% for the second quarter of 2005 and 4.64% for the first
quarter of 2006.

Rates paid on average interest-bearing  liabilities during the second quarter of
2006  increased  115 basis  points over the second  quarter of 2005 and 30 basis
points  over the  preceding  quarter.  Rates  paid on  interest-bearing  deposit
accounts, which increased 96 basis points over 2005, continued to lag behind the
increases in loan yields. The cost of other interest-bearing funds increased 187
basis  points  compared  with the same period last year and 47 basis points from
the preceding quarter.  Increased  non-interest bearing funds and changes in the
mix of  funding  sources  added 42 basis  points to the net  interest  margin in
second  quarter  of 2006  compared  with 35 basis  points  for 2005 and 40 basis
points for the first quarter of 2006.

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 would be 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  to offset the  short-term  nature of the  majority of the  Company's
funding sources.  The expected duration of these securities is approximately 3.1
years  based  on a range  of  interest  rate  and  prepayment  assumptions.  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. We have
interest rate swaps with a combined notional amount of $807 million that 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
position our balance sheet to be neutral to changes in interest  rates.  We also
have  interest  rate swaps with a notional  amount of $100  million that convert
prime-based  loans to fixed rate. The purpose of these  derivatives,  which have
been designated as cash flow hedges, also

 4

is to position our balance sheet to be neutral to changes in interest rates.

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 1 and in the
interest  rate  sensitivity  projections  as shown in the Market Risk section of
this report.


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Table 1 - Volume / Rate Analysis
(In thousands)
                                                   Three Months Ended                    Six Months Ended
                                                  June 30, 2006 / 2005                 June 30, 2006 / 2005
                                           --------------------------------------------------------------------------
                                                         Change Due To (1)                      Change Due To (1)
                                           --------------------------------------------------------------------------
                                                                     Yield /                                 Yield
                                              Change     Volume       Rate          Change      Volume       /Rate
                                           --------------------------------------------------------------------------
Tax-equivalent interest revenue:
                                                                                       
  Securities                               $   6,032    $ 898       $   5,134      $  12,344  $   3,788   $    8,556
  Trading securities                             122      158             (36)           140        143           (3)
  Loans                                       48,096   19,847          28,249         95,238     39,765       55,473
  Funds sold and resell agreements               251      109             142            326         20          306
---------------------------------------------------------------------------------------------------------------------
Total                                         54,501   21,012          33,489        108,048     43,716       64,332
---------------------------------------------------------------------------------------------------------------------
Interest expense:
  Transaction deposits                        18,826    5,266          13,560         36,326     11,900       24,426
  Savings deposits                                68      (27)             95            149        (33)         182
  Time deposits                               13,299    4,870           8,429         24,958      9,167       15,791
  Federal funds purchased and
   repurchase agreements                       9,932     (407)         10,339         18,225       (132)      18,357
  Other borrowings                             1,458   (2,371)          3,829          4,786     (3,088)       7,874
  Subordinated debentures                      1,950    1,468             482          4,638      3,744          894
---------------------------------------------------------------------------------------------------------------------
Total                                         45,533    8,799          36,734         89,082     21,558       67,524
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  Tax-equivalent net interest revenue          8,968   12,213          (3,245)        18,966     22,158       (3,192)
Change in tax-equivalent adjustment             (395)                                   (661)
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Net interest revenue                       $   8,573                               $  18,305
---------------------------------------------------------------------------------------------------------------------

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

Other Operating Revenue

Other operating  revenue decreased $3.7 million compared with the second quarter
of last year. Fees and commission  revenue  increased $6.9 million or 8%. Growth
in fees and  commissions  revenue was offset by a $4.8  million net  increase in
losses on  securities  sales and a $5.9  million  decrease  in gains on sales of
other assets.

Diversified sources of fees and commission revenue are a significant part of our
business  strategy and  represented  44% of total revenue,  excluding  gains and
losses on asset sales,  securities  and  derivatives,  for the second quarter of
2006.  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.

Fees and commissions revenue

Transaction  card  revenue  increased  $2.0  million or 11%.  Check card revenue
increased  $1.1  million or 27% while  merchant  discount  fees  increased  $227
thousand or 4%. Transaction  volumes provided the increased  revenue.  Growth in
check card revenue was distributed among Oklahoma, New Mexico and Texas markets.
Increased  merchant  discount  fees were  centered  primarily in  Oklahoma.  ATM
network  revenue also  increased  $680 thousand or 9% over the second quarter of
2005.

Trust fees and  commissions  increased $1.5 million or 9% for the second quarter
of  2006.  The  fair  value  of all  trust  assets,  which  is the  basis  for a
significant  portion of trust fees,  increased to $28.7 billion at June 30, 2006
compared with $26.0 billion at June 30, 2005.  Personal  trust  management  fees
increased  $890 thousand or 18% while revenue from the

 5

management  of oil and gas  properties  and other  real  estate  increased  $254
thousand  or  16%.  In  addition,   net  fees  from  mutual  fund  advisory  and
administrative  services were up $397 thousand or 12%.  Trust  activities in the
Oklahoma  and  Colorado   markets  provided  $13.0  million  and  $2.4  million,
respectively,  of total trust fees and commissions  during the second quarter of
2006.  Trust  revenue grew $920  thousand or 8% in the Oklahoma  market and $382
thousand or 19% in the Colorado market.

Brokerage and trading revenue  increased $1.0 million or 10%.  Customer  hedging
revenue increased $967 thousand or 51% to $2.9 million. Volatility in the energy
markets  prompted our energy  customers to more actively hedge their gas and oil
production.  Revenue from securities trading activities decreased $279 thousand,
or 5%.  Most of the  decrease  in trading  revenue is  attributed  to  increased
competition in the broker dealer or securities brokerage market and lower demand
caused by the  flattening  yield curve in the  securities  market.  Revenue from
retail brokerage activities increased $336 thousand, or 10% over the same period
of 2005.

Service charges on deposit accounts increased $1.0 million or 4% over the second
quarter of 2005. Overdraft fees grew $1.4 million or 8% due to increased volume.
Account  service  charge  revenue  decreased  $213 thousand or 3%. This decrease
reflected  the  change  in  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.

Mortgage banking revenue,  which is discussed more fully in the Line of Business
- Mortgage  Banking  section  of this  report  decreased  $1.4  million,  or 16%
compared with 2005. Net gains on mortgage loans sold totaled $3.0 million,  down
$1.5 million from the second  quarter of 2005.  Servicing  revenue  totaled $4.2
million for the second  quarter of 2006, a 3% increase over the same period last
year.

Other operating revenue included $2.9 million of fees earned on margin assets in
the  second  quarter of 2006 and $1.3  million  in the  second  quarter of 2005.
Margin  assets,  which  are held  primarily  as part of the  Company's  customer
derivatives  programs,  averaged  $260  million for the second  quarter of 2006,
compared  with $204  million  for the second  quarter of 2005.  The  increase in
average margin assets reflected growth in the fair value of liability derivative
contracts due primarily to increased  volatility in energy markets.  Fees earned
on average  margin assets  increased to 4.44% in the second quarter of 2006 from
2.55% in the  second  quarter  of 2005.  Fee rates  earned on margin  assets are
generally consistent with short-term interest rates.

Fees and commissions  revenue for the first half of 2006 totaled $183.6 million,
a $17.9 million or 11% increase over 2005.  Transaction  card revenue  increased
$3.9 million or 11% due to volume increases in merchant discounts and debit card
transactions.  Trust fees and  commissions  increased $3.4 million or 11% due to
increase in asset values and  business  growth.  Other  revenue  increased  $6.2
million or 40%, including $3.5 million from margin account fees.

Securities and derivatives

BOK Financial recognized net losses of $2.6 million on securities for the second
quarter of 2006,  including net losses of $2.5 million on securities  held as an
economic  hedge of mortgage  servicing  rights.  Securities  held as an economic
hedge of the mortgage servicing rights are separately  identified on the balance
sheet as "mortgage trading securities."  Mortgage trading securities are carried
at fair value;  changes in fair value are  recognized in earnings as they occur.
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.  During  the second  quarter  of 2005,  BOK  Financial
recognized  net gains on securities of $2.3 million,  including  $3.2 million of
gains on sales of  securities  held as an economic  hedge of mortgage  servicing
rights.

Net losses on derivatives  totaled $172 thousand for the second quarter of 2006,
compared with net losses of $311 thousand in 2005.  Net losses in 2006 consisted
of fair value  adjustments of derivatives  used to manage interest rate risk and
related hedged  liabilities.  Net losses on derivatives in the second quarter of
2005  included  $498  thousand  of net  losses  from fair value  adjustments  of
derivatives  used to manage  interest rate risk and related hedged  liabilities,
partially  offset by a gain of $186  thousand  from fair  value  adjustments  of
derivative contracts held as economic hedges of mortgage servicing rights.

 6


--------------------------------------------------------------------------------------------------------------------------
Table 2 - Other Operating Revenue
(In thousands)
                                                                         Three Months Ended
                                           -------------------------------------------------------------------------------
                                               June 30,       March 31,         Dec. 31,       Sept. 30,        June 30,
                                                 2006           2006             2005            2005             2005
                                           -------------------------------------------------------------------------------
                                                                                              
Brokerage and trading revenue               $   11,427     $   12,010       $   11,116      $   11,366       $   10,404
Transaction card revenue                        19,951         18,508           18,988          18,526           17,979
Trust fees and commissions                      17,751         17,945           16,536          16,376           16,259
Deposit service charges and fees                26,341         23,986           25,222          25,619           25,347
Mortgage banking revenue                         7,195          6,789            7,018           9,535            8,550
Other revenue                                   10,931         10,811           10,067           9,490            8,160
--------------------------------------------------------------------------------------------------------------------------
  Total fees and commissions                    93,596         90,049           88,947          90,912           86,699
--------------------------------------------------------------------------------------------------------------------------
Gain on sales of assets                             39            918               71              81            5,937
Gain (loss) on securities, net                  (2,583)        (1,221)          (1,780)         (4,744)           2,266
Gain (loss) on derivatives, net                   (172)          (309)            106              606            (311)
--------------------------------------------------------------------------------------------------------------------------
  Total other operating revenue             $   90,880     $   89,437       $   87,344      $   86,855       $   94,591
--------------------------------------------------------------------------------------------------------------------------


Other Operating Expense

Other operating expense for the second quarter of 2006 totaled $122.1 million, a
$3.9 million, or 3% decrease from 2005. The decrease in other operating expenses
resulted from changes in the value of mortgage servicing rights. Appreciation of
mortgage  servicing  rights during the second quarter of 2006 reduced  operating
expenses $3.6 million.  Depreciation in the value of mortgage  servicing  rights
required an  impairment  charge of $7.1  million in the second  quarter of 2005.
Operating expenses increased $6.8 million or 6% over the second quarter or 2005,
excluding  changes in the value of mortgage  servicing  due to higher  personnel
expense.

Personnel expense

Personnel  expense totaled $72.4 million for the second quarter of 2006 compared
with $65.3 million for the second quarter of 2005.

Regular  compensation  expense  which  consists  primarily of salaries and wages
totaled  $45.5  million for the second  quarter of 2006,  up $4.4 million or 11%
over 2005. The increase in regular compensation expense was due to a 7% increase
in average  regular  compensation  per  full-time  equivalent  employee and a 4%
increase  in average  staffing.  Growth in average  compensation  per  full-time
equivalent  employee  reflects  the cost of  hiring  top  talent as we expand in
various markets.

Incentive  compensation  expense  includes the  recognized  costs of  cash-based
commissions,  bonus and incentive programs,  stock-based  compensation plans and
deferred compensation plans.  Stock-based compensation plans include both equity
and liability awards.

Incentive  compensation  expense totaled $15.5 million for the second quarter of
2006, an increase of $2.7 million or 21% over 2005.  Second quarter 2006 expense
for the Company's various  cash-based  incentive programs totaled $12.7 million,
up  $2.6  million  over  last  year.   These  programs   consist   primarily  of
formula-based  plans that determine  incentive amounts based on  pre-established
growth criteria. Compensation expense for stock-based compensation plans totaled
$2.8 million for both the second quarters of 2006 and 2005. Compensation expense
for stock-based  compensation  plans accounted for as equity awards totaled $1.6
million in the second quarter of 2006,  compared with $1.4 million in the second
quarter  of  2005.  Expense  for  these  awards  is  determined  by the  awards'
grant-date  fair value and is not affected by  subsequent  changes in the market
value of BOK  Financial  common  stock.  Compensation  expense  for  stock-based
compensation plans accounted for as liability awards totaled $1.2 million in the
second  quarter of 2006,  compared with $1.4 million in 2005.  Expense for these
liability  awards is based on  current  fair  value,  including  current  period
changes due to the market value of BOK Financial common stock.

Employee  benefit expenses totaled $11.4 million for both the second quarters of
2006 and 2005.  Pension expense decreased $1.8 million due to the curtailment of
pension plan benefits as of April 1, 2006. The reduction in pension  expense was
largely  offset by a $1.3  million  increase  in the cost of  enhanced  employee
thrift plan benefits.

 7

Data processing and communications expense

Data  processing and  communication  expenses  decreased  $224  thousand,  or 1%
compared to 2005. This expense consists of two broad categories, data processing
systems and transaction card processing. Data processing systems costs decreased
$517  thousand,  or 5%  compared  with the first  quarter of 2005.  The  Company
negotiated cost  reductions on its primary data  processing  contract during the
quarter in exchange for a three-year  contract  extension.  The benefit of these
cost reductions will be recognized over the remaining contract term. Transaction
card  processing  costs  increased  $293  thousand or 5% due to volume growth in
check card and merchant discount revenue.

Other operating expenses

Business promotion expenses totaled $4.8 million for the second quarter of 2006,
a $932 thousand or 24% increase  over 2005.  Promotional  activities  focused on
consumer  banking  growth  in  Oklahoma  and in the  regional  banking  markets.
Mortgage  banking expense  decreased $548 thousand or 16%. Costs associated with
loan  origination  and sales  activities  totaled  $384  thousand  in the second
quarter  of 2006 and $423  thousand  in the  second  quarter  of 2005.  Mortgage
banking  expense also included  changes in the fair value of mortgage  servicing
rights due to runoff of the underlying loans.  Fair value of mortgage  servicing
rights  decreased $2.5 million in the second quarter of 2006 due to loan runoff.
Amortization  expense,  which also  considers  the runoff of  underlying  loans,
totaled $3.0 million in the second quarter of 2005.

Year to date operating expenses totaled $239.5 million, up 5% over 2005. Changes
in the fair value of mortgage  servicing  rights  decreased  operating  expenses
$10.7  million in 2006 and  increased  operating  expenses $1.5 million in 2005.
Excluding changes in the value of mortgage servicing rights,  operating expenses
were $23.5  million or 10%  higher for the first half of 2006.  Personnel  costs
were up $19.8 million or 16%.  Salaries and wages increased $10.0 million or 13%
due to a 7% increase in average  salaries  per employee and a 5% increase in the
average number of employees.  Incentive compensation expense was up $9.1 million
or  42%.   Cash-based   incentive  programs  increased  $5.0  million  based  on
performance measured against  pre-established  criteria.  Stock-based  incentive
compensation increased $4.1 million.


----------------------------------------------------------------------------------------------------------------------
 Table 3 - Other Operating Expense
(In thousands)
                                                                   Three Months Ended
                                   ----------------------------------------------------------------------------------
                                       June 30,        March 31,       Dec. 31,         Sept. 30,         June 30,
                                        2006             2006           2005              2005             2005
                                   ----------------------------------------------------------------------------------
                                                                                      
Personnel                          $    72,369     $    71,232     $    68,666      $    66,533      $    65,333
Business promotion                       4,802           4,803           5,170            4,494            3,870
Professional fees and services           4,362           3,914           4,534            3,951            4,492
Net occupancy and equipment             13,199          13,026          12,864           12,587           12,650
Data processing & communications        16,157          16,995          18,054           17,492           16,381
Printing, postage and supplies           4,001           3,905           3,976            3,846            3,629
Net (gains) losses and operating
   expenses of repossessed assets           54             219             335             (387)             316
Amortization of intangible assets        1,359           1,370           1,797            1,801            1,808
Mortgage banking costs                   2,839           3,087           3,294            4,268            3,387
Change in fair value of mortgage
  servicing rights                      (3,613)         (7,081)              -                -                -
Provision (recovery) for
  impairment of mortgage servicing rights    -               -            (708)          (4,671)           7,088
Other expense                            6,598           5,909           5,921            7,120            7,056
---------------------------------------------------------------------------------------------------------------------
  Total other operating expense    $   122,127     $   117,379     $   123,903      $   117,034      $   126,010
---------------------------------------------------------------------------------------------------------------------


Income Taxes

Income tax expense was $31.1 million, compared with $28.6 million for the second
quarter of 2005. This represented 36% of book taxable income for both periods.

 8

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 Company's  overall liquidity needs and interest rate risk.
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.

Consolidated net income provided by the Regional  Banking Division  continued to
increase due largely to asset growth.  Also,  performance by business units that
generate  deposits for the Company,  such as the Oklahoma  consumer banking unit
continued  to improve due  primarily  to internal  funds  pricing  credits.  The
increased  value of  deposits  when  short-term  interest  rates  are  rising is
reflected  in the internal  transfer  pricing  credit.  The increase in internal
transfer pricing credit is offset through the funds management unit.


-------------------------------------------- -------------------------------- --------------------------------
Table 4 - Net Income by Line of Business
(In thousands)                                 Three months ended June 30,       Six months ended June 30,
                                                   2006             2005            2006             2005
                                             ---------------- --------------- ---------------- ---------------
                                                                                     
Regional banking                               $ 22,731         $ 20,172        $ 45,505         $ 37,316
Oklahoma corporate banking                       20,267           23,081          38,425           40,828
Mortgage banking                                  1,341            (473)           4,485            1,757
Oklahoma consumer banking                         8,545            6,314          17,012           10,908
Wealth management                                 6,128            5,476          13,377           10,980
Funds management and other                       (4,028)          (4,105)         (9,072)             731
-------------------------------------------- ---------------- --------------- ---------------- ---------------
     Total                                     $ 54,984         $ 50,465        $109,732         $102,520
-------------------------------------------- ---------------- --------------- ---------------- ---------------


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,  the Oklahoma
Corporate  Banking  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  $20.3 million or 37% to  consolidated  net income for the
second  quarter of 2006.  This compares to $23.1 million or 46% of  consolidated
net income for 2005.  Net income  provided  by the  Oklahoma  Corporate  Banking
Division in the second  quarter of 2005 included $2.9 million from the after-tax
gain on the sale of the Company's  interest in an Oklahoma City office building.
Growth in net income provided by this division,  excluding the prior year's gain
on asset sale,  came  primarily  from loan and  deposit  growth.  Average  loans
attributed to the Oklahoma  Corporate Banking Division were

 9

$4.3 billion for the second quarter of 2006,  compared with $3.9 billion for the
second  quarter of 2005.  Deposits  attributed  to  Oklahoma  Corporate  Banking
averaged  $1.6  billion for the second  quarter of 2006,  up 10% over last year.
Increased  average loans and deposits  combined to increase net interest revenue
$2.9 million or 8%. In addition,  other operating revenue increased $1.8 million
or 8% due to growth in merchant  discount  and ATM  processing  fees.  Operating
expenses increased $4.0 million or 16%. Personnel expense increased $1.3 million
or 16% due to growth in both regular  salaries and  incentive  compensation.  In
addition, allocations for shared services increased $2.0 million.


Table 5 -  Oklahoma Corporate Banking
 (Dollars in Thousands)
                                          Three months ended June 30,         Six months ended June 30,
                                       ---------------------------------- ----------------------------------
                                              2006              2005             2006              2005
                                          ------------- --- ------------- -- -------------- -- -------------
                                                                                  
NIR (expense) from external sources    $   63,647         $  50,588        $  123,509         $  95,288
NIR (expense) from internal sources       (25,740)          (15,534)          (48,589)          (27,837)
                                          -------------     -------------    --------------    -------------
Net interest revenue                       37,907            35,054            74,920            67,451
Other operating revenue                    23,507            21,682            45,275            46,216
Gain on sale of assets                          -             4,708                 -             4,708
Operating expense                          28,105            24,126            56,333            51,058
Net loans charged off / (recovered)           252              (458)            1,087               483
Net income                                 20,267            23,081            38,425            40,828

Average assets                         $5,173,904      $  4,592,757        $5,170,713        $4,539,426
Average economic capital                  401,170           320,170           384,780           325,960

Return on assets                             1.57%             2.02%             1.50%            1.81%
Return on economic capital                  20.26%            28.92%            20.14%           25.26%
Efficiency ratio                            45.76%            42.52%            46.87%           43.13%


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 the retail brokerage  division of BOSC, Inc., a registered broker
/ dealer.  Consumer banking  activities  outside of Oklahoma are included in the
Regional Banking division.  The Oklahoma  Consumer Banking Division  contributed
$8.5 million or 16% to  consolidated  net income for the second quarter of 2006.
This compares to $6.3 million or 13% of  consolidated  net income for 2005.  Net
interest revenue, which consisted primarily of credits for funds provided to the
funds management unit increased $3.9 million or 29%. Average deposits attributed
to this  Division  increased  $193 million,  or 7% compared with last year.  The
value to the  Company  of  these  lower-costing  retail  deposits  continues  to
increase as short-term  interest rates rise.  Operating  revenue  increased $1.4
million or 8% over last year.  Overdraft  charges  increased $755 thousand or 6%
and check card fees increased $721 thousand or 26%. Operating expenses increased
$1.8 million or 10% due primarily to growth in personnel and business  promotion
expenses.

 10


Table 6 -  Oklahoma Consumer Banking
 (Dollars in Thousands)
                                             Three months ended June 30,         Six months ended June 30,
                                         ---------------------------------- ----------------------------------
                                                 2006              2005             2006              2005
                                             -------------     -------------    --------------    -------------
                                                                                   
NIR (expense) from external sources          $  (14,853)       $  (10,089)      $  (28,291)       $  (19,194)
NIR (expense) from internal sources              31,978            23,340           61,437            44,451
                                             -------------     -------------    --------------    -------------
Net interest revenue                             17,125            13,251           33,146            25,257
Other operating revenue                          18,139            16,736           35,393            31,449
Operating expense                                20,511            18,667           39,844            37,567
Net loans charged off                               775               913              907             1,154
Net income                                        8,545             6,314           17,012            10,908

Average assets                             $  2,818,034      $  2,621,189     $  2,793,626      $  2,598,940
Average economic capital                         61,430            55,400           57,730            53,420

Return on assets                                   1.22%             0.97%            1.23%             0.85%
Return on economic capital                        55.79%            45.71%           59.42%            41.18%
Efficiency ratio                                  58.16%            62.25%           58.13%            66.25%


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 $1.3 million or 2% to consolidated net
income in the second quarter of 2006,  compared with a net loss of $473 thousand
in 2005.

Mortgage banking activities  consisted 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. The general trend has been toward higher mortgage
loan commitment rates, especially in the first half of 2006.

Loan Production Sector

Loan  production  revenue  totaled $3.4 million for the second  quarter of 2006,
including  $3.3  million of  capitalized  mortgage  servicing  rights and a $174
thousand net gain on loans sold.  Loan  production  revenue totaled $5.1 million
for the second quarter of 2005,  including $4.6 million of capitalized  mortgage
servicing  rights.  Mortgage  loans funded in the second quarter of 2006 totaled
$243 million,  including $215 million of loans funded for resale and $28 million
of loans funded for retention by  affiliates.  Mortgage loans funded in the same
period of 2005 totaled $247 million,  including $185 million of loans funded for
resale  and  $62  million  of  loans  funded  for   retention   by   affiliates.
Approximately  70% of the loans funded during the second quarter of 2006 were to
borrowers in Oklahoma. Loan production activities resulted in net pre-tax income
of $696  thousand  for the  second  quarter of 2006 and  pre-tax  income of $1.8
million  for  the  second  quarter  of  2005.  The  pipeline  of  mortgage  loan
applications  totaled $276 million at June 30, 2006, compared to $268 million at
March 31, 2006 and $292 million at June 30, 2005.

Loan Servicing Sector

The loan servicing  sector had net pre-tax income of $1.3 million for the second
quarter of 2006  compared to a pre-tax  loss of $3.9 million for the same period
of 2005.  The fair value of  mortgage  servicing  rights  increased  in 2006 but
decreased during 2005 due to changes in mortgage commitment rates.

A 36 basis point increase in average  mortgage  commitment rates since March 31,
2006  resulted in a $3.6  million  increase  in the value of mortgage  servicing
rights.  Rising  mortgage  commitment  rates,  along with other market  factors,
reduced  anticipated  prepayment  speeds and increased the discount rate used to
value the  servicing  rights.  At the same  time,  losses of $2.5  million  were
recognized from decreases in the fair value of financial  instruments held as an
economic hedge of the value of the servicing rights.

During the second  quarter of 2005, an impairment  provision of $7.1 million was
recognized.  A 50 basis point  decrease in mortgage  interest  rates during this
period reduced the fair value of the servicing rights. The impairment  provision
was  partially  offset by net gains of $3.4  million  on  financial  instruments
designated as economic hedges.

 11

Servicing  revenue,  which  is  included  in  mortgage  banking  revenue  on the
Consolidated Statements of Earnings,  totaled $4.2 million in the second quarter
of 2006 compared with $4.1 million in 2005. The average  outstanding  balance of
loans  serviced for others was $4.5 billion during 2006 compared to $3.8 billion
during  2005.  On March 31,  2006,  the Company paid $6.8 million to acquire the
rights to service  approximately  $480 million of mortgage loans.  Substantially
all of these loans are to  borrowers  in our primary  market  areas.  Annualized
servicing  revenue per outstanding  loan principal  decreased to 37 basis points
for the second quarter of 2006, compared with 43 basis points last year.

In  addition to changes in the fair value of  mortgage  servicing  rights due to
anticipated  prepayments and other factors, the fair value of mortgage servicing
rights decreased $2.5 million during the second quarter of 2006 due to runoff of
the  underlying  loans  serviced.  This  reduction  in fair value is included in
mortgage  banking costs in the  Consolidated  Statements  of Earnings.  Prior to
adoption of FAS 156 in the first quarter of 2006, mortgage servicing rights were
amortized in proportion to projected  cash flows over the estimated  life of the
loans serviced. Projected cash flows considered both actual and estimated runoff
of the underlying loans serviced.  Amortization  expense  recognized in mortgage
banking  costs  during the second  quarter of 2005  totaled  $3.0  million.  The
decrease in expense related to the runoff of loans serviced  primarily  reflects
lower loan prepayment speeds.


Table 7 -  Mortgage Banking
 (Dollars in Thousands)
                                                     Three months ended June 30,         Six months ended June 30,
                                                  ---------------------------------- ----------------------------------
                                                         2006              2005             2006              2005
                                                     -------------     -------------    --------------    -------------
                                                                                           
NIR (expense) from external sources                    $  5,624          $  5,098         $  10,406         $  10,094
NIR (expense) from internal sources                      (4,683)           (3,585)           (8,914)           (7,151)
                                                     -------------     -------------    --------------    -------------
Net interest revenue                                        941             1,513             1,492             2,943

Capitalized mortgage servicing rights                     3,333             4,556             6,168             6,537
Other operating revenue                                   4,391             4,851             8,754             9,298
Gain on sale of assets                                        -             1,232                 -             1,232
Operating expense                                         7,328             9,160            14,997            16,871
Change in fair value of mortgage servicing
   rights                                                 3,613                 -            10,694                 -
Provision for impairment of mortgage
   servicing rights                                           -             7,088                 -             1,464
Gains (losses) on financial instruments, net             (2,533)            3,404            (4,394)            1,328
Net income (loss)                                         1,341              (473)            4,485             1,757

Average assets                                       $  498,495        $  542,797        $  472,610        $  529,298
Average economic capital                                 23,410            21,390            23,860            22,980

Return on assets                                           1.08%            (0.35)%            1.91%            0.67%
Return on economic capital                                22.98%            (8.87)%           37.91%           15.42%
Efficiency ratio                                          84.57%            75.38%            91.37%           84.31%


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 designated as "mortgage
trading  securities" when prepayment risks exceed certain levels.  Additionally,
interest rate  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. These financial
instruments  are carried at fair value.  Changes in fair value are recognized in
current period income.  No special hedge  accounting  treatment is applicable to
either the mortgage servicing rights or the financial instruments  designated as
an economic hedge.

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 June 30, 2006,  financial  instruments  with a fair value of $83 million were
held for the economic  hedge  program.  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 June 30, 2006, the pre-tax  results of this modeling
on reported earnings were:

 12

Table 8 - Interest Rate Sensitivity - Mortgage Servicing
(Dollars in Thousands)
                                           50 bp increase   50 bp decrease
Anticipated change in:
Fair value of mortgage servicing rights    $     2,796      $   (3,744)
Fair value of hedging instruments               (2,823)          3,085
                                          ----------------- ----------------
   Net                                     $       (27)     $     (659)
                                          ----------------- ----------------

Table 8 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 $2.8 million  while a 50 basis point  decrease is
expected to reduce value by $3.7 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.  Wealth  management  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 are included in the Wealth Management Division.

Wealth Management contributed $6.1 million or 11% to consolidated net income for
the second quarter of 2006. This compared to $5.5 million or 11% of consolidated
net income for 2005.

Trust and private  financial  services  provided  $5.6  million of net income in
2006,  an 18%  increase  over  2005.  At June 30,  2006  and  2005,  the  wealth
management  line of business was  responsible  for trust  assets with  aggregate
market values of $26.2 billion and $23.8  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 $9.7 billion of trust assets
at June 30, 2006, compared with $8.6 billion at June 30, 2005.

Brokerage and trading  activities  provided $567 thousand of total net income in
the second quarter of 2006 compared to $872 thousand  provided in same period of
2005. A reduction  in income from trading  activities  was  partially  offset by
growth in net income from our customer hedging programs.


Table 9 -  Wealth Management
 (Dollars in Thousands)
                                           Three months ended June 30,         Six months ended June 30,
                                        ---------------------------------- ----------------------------------
                                               2006              2005             2006              2005
                                           -------------     -------------    --------------    -------------
                                                                                 
NIR (expense) from external sources         $  3,012          $  3,010         $  5,476          $  5,611
NIR (expense) from internal sources            3,660             2,711            7,698             5,438
                                           -------------     -------------    --------------    -------------
Net interest revenue                           6,672             5,721           13,174            11,049

Other operating revenue                       29,555            26,554           60,105            53,252
Operating expense                             26,045            23,149           51,236            46,130
Net income                                     6,128             5,476           13,377            10,980

Average assets                          $  1,913,243      $  1,709,268     $  1,894,992      $  1,584,700
Average economic capital                     126,720           119,870          122,890           115,310

Return on assets                                1.28%             1.29%            1.42%            1.40%
Return on economic capital                     19.40%            18.32%           21.95%           19.20%
Efficiency ratio                               71.89%            71.72%           69.92%           71.74%


 13

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.
They also include fiduciary  services provided by Colorado State Bank and Trust.
Small businesses and middle-market  corporations are Regional  Banking's primary
customer  focus.   Regional  Banking   contributed   $22.7  million  or  41%  to
consolidated  net income during the second  quarter of 2006.  This compares with
$20.2  million or 40% of  consolidated  net income for the same  period in 2005.
Growth in net income  contributed  by the  regional  banks came  primarily  from
operations  in Colorado.  Net income from  Colorado  operations  increased  $1.1
million or 50% compared  with the same period of 2005.  In addition,  net income
for 2006 in  Texas  and  Arizona  increased  $559  thousand  and $444  thousand,
respectively.

Net income from  operations in Colorado was $3.4 million for the second  quarter
of 2006, compared with $2.3 million for the second quarter of 2005. Net interest
revenue  increased $2.2 million or 33% due primarily to a $422 million  increase
in average  earning  assets.  Average loans increased $105 million while average
funds sold to the funds  management  unit increased $282 million.  The growth in
earning   assets  was  funded   primarily   by  a  $281   million   increase  in
interest-bearing  deposits  and  $101  million  of  borrowings  from  the  funds
management unit. Other operating revenue grew $400 thousand or 15% due primarily
to trust fees and  commissions.  At June 30,  2006 and 2005,  Colorado  regional
banking was  responsible  for trust  assets with  aggregate  fair values of $2.5
billion and $2.2 billion,  respectively under various fiduciary arrangements. We
have sole or joint discretionary  authority over $955 million of trust assets at
June 30, 2006,  compared with $860 million at June 30, 2005.  Operating expenses
also  increased 15% due to personnel  costs and  allocations  of shared  support
services.

Net income from Texas operations totaled $12.8 million for the second quarter of
2006, up $559 thousand over last year. Net interest revenue grew $3.6 million or
11%.  Average  earning  assets  increased  $513 million,  or 19% from the second
quarter of 2005. This increase  resulted from a $438 million increase in average
loans and a $113 million  increase in securities.  The growth in average earning
assets was funded primarily by a $396 million increase in average deposits and a
$114  million  increase  in funds  borrowed  from  the  funds  management  unit.
Operating  revenue  increased $330 thousand due to deposit  service  charges and
check card revenue.  Operating  expenses  increased $2.2 million or 12% due to a
$1.0  million or 10%  increase in  personnel  costs and higher  allocations  for
shared services.

The increase in net income from New Mexico  operations was also based largely on
a $671  thousand  increase  in net  interest  revenue.  Average  earning  assets
decreased $93 million.  Average  loans  increased $8 million while funds sold to
the funds  management unit decreased $100 million.  Average  deposits in the New
Mexico market increased $133 million, including $110 million of consumer banking
deposits. Average funds borrowed from external sources decreased $201 million as
the Company centralized borrowings from external sources in the funds management
unit.  Other  operating  income  increased  $264 thousand or 7% due primarily to
growth in transaction card revenue.

We continue to expand  operations in the Arizona market since the acquisition of
Bank of Arizona in the second quarter of 2005.  Outstanding  loans attributed to
the Arizona market averaged $270 million for the second quarter of 2006, up $131
million from the second quarter of 2005's  average of $139 million.  Loan growth
included  $47  million in our  recently-opened  Tucson loan  production  office.
Average deposits increased $7 million to $121 million. Loan growth was funded by
borrowings from the funds management unit.

 14


Table 10 -  Bank of Texas
 (Dollars in Thousands)
                                                     Three months ended June 30,         Six months ended June 30,
                                                  ---------------------------------- ----------------------------------
                                                         2006              2005             2006              2005
                                                     -------------     -------------    --------------    -------------
                                                                                           
NIR (expense) from external sources                    $  41,190         $  34,841        $  80,200         $  67,626
NIR (expense) from internal sources                       (5,345)           (2,590)          (9,526)           (4,600)
                                                     -------------     -------------    --------------    -------------
Net interest revenue                                      35,845            32,251           70,674            63,026

Other operating revenue                                    6,529             6,199           12,659            11,432
Operating expense                                         20,819            18,661           41,101            37,752
Net loans charged off                                      1,789             1,255            2,190             1,373
Net income                                                12,848            12,289           26,027            23,228

Average assets                                      $  3,610,316      $  3,099,892     $  3,578,237      $  3,114,209
Average economic capital                                 247,010           166,940          229,220           166,920
Average invested capital                                 414,090           334,020          396,300           334,010

Return on assets                                           1.43%              1.59%            1.47%            1.50%
Return on economic capital                                20.86%             29.53%           22.90%           28.06%
Return on average invested capital                        12.44%             14.76%           13.24%           14.02%
Efficiency ratio                                          49.13%             48.53%           49.32%           50.70%



Table 11 -  Bank of Albuquerque
 (Dollars in Thousands)
                                                     Three months ended June 30,         Six months ended June 30,
                                                  ---------------------------------- ----------------------------------
                                                         2006              2005             2006              2005
                                                     -------------     -------------    --------------    -------------
                                                                                               
NIR (expense) from external sources                   $  15,992         $  13,945        $  31,665         $  27,041
NIR (expense) from internal sources                      (4,126)           (2,750)          (8,011)           (5,139)
                                                     -------------     -------------    --------------    -------------
Net interest revenue                                     11,866            11,195           23,654            21,902

Other operating revenue                                   4,149             3,885            8,079             7,243
Operating expense                                         6,609             6,608           13,681            13,355
Net loans charged off                                       692               275              751               423
Net income                                                5,341             5,009           10,588             9,391

Average assets                                     $  1,446,500      $  1,536,954     $  1,459,371      $  1,571,119
Average economic capital                                 75,080            84,630           75,410            79,440
Average invested capital                                 94,170           103,720           94,500            98,530

Return on assets                                           1.48%             1.31%            1.46%            1.21%
Return on economic capital                                28.53%            23.74%           28.31%           23.84%
Return on average invested capital                        22.75%            19.37%           22.59%           19.22%
Efficiency ratio                                          41.27%            43.82%           43.11%           45.82%


 15


Table 12 - Bank of Arkansas
 (Dollars in Thousands)
                                                     Three months ended June 30,         Six months ended June 30,
                                                  ---------------------------------- ----------------------------------
                                                         2006              2005             2006              2005
                                                     -------------     -------------    --------------    -------------
                                                                                           
NIR (expense) from external sources                   $  2,616          $  2,510         $  4,905          $  5,448
NIR (expense) from internal sources                       (819)             (842)          (1,538)           (1,584)
                                                     -------------     -------------    --------------    -------------
Net interest revenue                                     1,797             1,668            3,367             3,864

Other operating revenue                                    275               292              529               554
Operating expense                                          870               843            1,727             1,719
Net loans charged off / (recovered)                        (70)               13              (28)               23
Net income                                                 776               686            1,341             1,647

Average assets                                      $  188,922        $  248,209       $  192,477        $  253,006
Average economic capital                                15,680            10,460           14,650            10,640
Average invested capital                                15,680            10,460           14,650            10,640

Return on assets                                          1.65%              1.11%           1.40%            1.31%
Return on economic capital                               19.85%             26.31%          18.46%           31.22%
Return on average invested capital                       19.85%             26.31%          18.46%           31.22%
Efficiency ratio                                         41.99%             43.01%          44.33%           38.91%



Table 13 - Colorado State Bank and Trust
 (Dollars in Thousands)
                                                     Three months ended June 30,         Six months ended June 30,
                                                  ---------------------------------- ----------------------------------
                                                         2006              2005             2006              2005
                                                     -------------     -------------    --------------    -------------
                                                                                           
NIR (expense) from external sources                   $  12,870         $  8,330         $  24,420         $  15,686
NIR (expense) from internal sources                      (3,929)          (1,629)           (6,954)           (2,942)
                                                    -------------     -------------    --------------    -------------
Net interest revenue                                      8,941            6,701            17,466            12,744

Other operating revenue                                   3,007            2,607             6,042             4,886
Operating expense                                         6,401            5,589            12,362            10,987
Net loans charged off                                        (5)              23               (51)            1,651
Net income                                                3,392            2,258             6,841             3,050

Average assets                                     $  1,151,708       $  726,730       $ 1,095,054        $  697,852
Average economic capital                                 69,080           46,870            65,420            43,060
Average invested capital                                111,060           88,860           107,410            85,050

Return on assets                                           1.18%            1.25%             1.26%            0.88%
Return on economic capital                                19.69%           19.32%            21.09%           14.28%
Return on average invested capital                        12.25%           10.19%            12.84%            7.23%
Efficiency ratio                                          53.57%           60.05%            52.59%           62.32%


 16


Table 14 - Bank of Arizona
 (Dollars in Thousands)
                                                     Three months ended June 30,         Six months ended June 30,
                                                  ---------------------------------- ----------------------------------
                                                         2006              2005             2006              2005
                                                     -------------     -------------    --------------    -------------
                                                                                           
NIR (expense) from external sources                   $  6,076          $  2,464         $  10,760         $  ***
NIR (expense) from internal sources                     (2,441)             (401)           (4,030)           ***
                                                     -------------     -------------    --------------    -------------
Net interest revenue                                     3,635             2,063             6,730            ***

Other operating revenue                                    122               375               287            ***
Operating expense                                        3,206             2,530             5,757            ***
Net loans charged off / (recovered)                         (2)               21                 2            ***
Net income                                                 374               (70)              708            ***

Average assets                                      $  366,609        $  209,947        $  331,081         $  ***
Average economic capital                                23,560            16,127            20,280            ***
Average invested capital                                40,210            32,777            36,930            ***

Return on assets                                          0.41%            (0.13)%            0.43%           ***
Return on economic capital                                6.37%            (1.74)%            7.04%           ***
Return on average invested capital                        3.73%            (0.86)%            3.87%           ***
Efficiency ratio                                         85.33%           103.77%            82.04%           ***
*** Data not applicable due to acquisition of Bank of Arizona in April 2005.



Financial Condition

Securities

Securities are classified as either held for  investment,  available for sale or
trading  based  upon  asset/liability   management  strategies,   liquidity  and
profitability  objectives and regulatory  requirements.  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.  Certain  mortgage-backed
securities,  identified as mortgage trading securities,  have been designated as
economic hedges of mortgage  servicing  rights.  These securities are carried at
fair value with changes in fair value recognized in current period income. These
securities  are held with the intent that gains or losses will offset changes in
the fair value of  mortgage  servicing  rights.  The  Company  also  maintains a
separate trading securities portfolio.  Trading portfolio securities,  which are
also  carried  at fair value with  changes in fair value  recognized  in current
period income, are acquired and held with the intent to sell at a profit.

The amortized cost of available for sale securities totaled $4.9 billion at both
June 30,  2006 and March  31,  2006.  Mortgage-backed  securities  continued  to
represent  substantially  all  available  for  sale  securities.  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.
Management  restricted  growth in the  securities  portfolio  during  the second
quarter  of 2006 in  anticipation  of an  investment  of up to $200  million  in
bank-owned life insurance in the third quarter of 2006.

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
effective duration of the mortgage-backed securities portfolio was approximately
3.1 years at June 30, 2006 and 2.8 years at March 31, 2006. Management estimates
that the effective duration of the  mortgage-backed  securities  portfolio would
extend to 3.3 years assuming a 300 basis point immediate rate shock.

Net unrealized  losses on available for sale securities  totaled $187 million at
June 30, 2006 compared with net  unrealized  losses of $148 million at March 31,
2006. The increase in net unrealized losses during the quarter was due primarily
to rising  interest rates.  The aggregate  gross amount of unrealized  losses at
June 30, 2006 totaled $201 million.  We evaluated the securities with unrealized
losses to determine if 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.  Management  does not believe
that any of the unrealized  losses are due to credit quality  concerns.  We also
considered our intent and ability to either hold or sell the  securities.  It is
our belief,  based on currently available

 17

information and our evaluation,  that the unrealized  losses in these securities
are temporary.

Loans

The  aggregate  loan  portfolio at June 30, 2006 totaled  $9.8  billion,  a $593
million  increase  since March 31, 2006.  Net loan growth  accelerated  to a 26%
annualized  rate during the second quarter of 2006.  Commercial  loans increased
$300 million and commercial real estate loans grew $218 million.


---------------------------------------------------------------------------------------------------------------------
Table 15 - Loans
  (In thousands)
                                          June 30,        March 31,       Dec. 31,        Sept. 30,        June 30,
                                           2006             2006           2005             2005            2005
                                    ---------------------------------------------------------------------------------
Commercial:
                                                                                        
  Energy                             $   1,514,353    $   1,367,400   $   1,399,417   $   1,350,835    $   1,278,885
  Services                               1,405,060        1,358,194       1,425,821       1,419,342        1,340,411
  Wholesale/retail                         879,203          850,013         793,032         804,628          777,440
  Manufacturing                            541,592          519,100         514,792         484,662          483,211
  Healthcare                               546,595          534,091         520,309         476,616          434,132
  Agriculture                              292,022          284,277         291,858         238,950          244,687
  Other commercial and industrial          360,493          325,746         354,706         292,657          301,013
---------------------------------------------------------------------------------------------------------------------
     Total commercial                   5,539,318        5,238,821       5,299,935       5,067,690        4,859,779
---------------------------------------------------------------------------------------------------------------------

Commercial real estate:
  Construction and land development        789,991          686,400         638,366         605,457          542,049
  Multifamily                              228,781          205,755         204,620         225,074          237,904
  Other real estate loans                1,304,164        1,212,805       1,146,916       1,142,093        1,081,906
---------------------------------------------------------------------------------------------------------------------
      Total commercial real estate       2,322,936        2,104,960       1,989,902       1,972,624        1,861,859
---------------------------------------------------------------------------------------------------------------------

Residential mortgage:
  Secured by 1-4 family
    residential properties               1,211,448        1,177,337       1,169,331       1,166,559        1,151,674
  Residential mortgages held for sale       54,026           40,299          51,666          46,306           74,410
---------------------------------------------------------------------------------------------------------------------
      Total residential mortgage         1,265,474        1,217,636       1,220,997       1,212,865        1,226,084
---------------------------------------------------------------------------------------------------------------------

Consumer                                   666,740          640,542         629,144         630,389          566,958
---------------------------------------------------------------------------------------------------------------------

  Total                              $   9,794,468    $   9,201,959   $   9,139,978   $   8,883,568    $   8,514,680
---------------------------------------------------------------------------------------------------------------------


The  commercial  loan  portfolio  totaled $5.5 billion at June 30, 2006, up $300
million during the second quarter of 2006.  Energy loans totaled $1.5 billion or
15% of total loans.  Outstanding  energy loans  increased  $147 million,  or 43%
annualized,  during the second  quarter of 2006  after  decreasing  $32  million
during the preceding  quarter.  Growth in energy loans during the second quarter
reflected  an  expectation  that the range of energy  prices will remain near or
exceed  current  levels.  Approximately  $1.2  billion  of loans  in the  energy
portfolio 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.

The  services  sector  of the  portfolio  totaled  $1.4  billion,  or 14% of the
Company's  total  outstanding  loans.  Loans  in this  sector  of the  portfolio
increased  $47 million or 14%  annualized  since March 31,  2006.  The  services
sector consists of a large number of loans to a variety of businesses, including
communications,  gaming and transportation services.  Approximately $960 million
of the  services  sector  is made up of loans  with  balances  of less  than $10
million.

Other  notable loan  concentrations  by primary  industry of the  borrowers  are
presented in Table 15.

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.  The outstanding  principal
balances of these loans totaled $1.2 billion at both June 30, 2006 and March 31,
2006.  Substantially  all of these  loans were to  borrowers  with local  market

 18

relationships.  BOK Financial serves as the agent lender in approximately 31% of
the shared national credits,  based on dollars  committed.  Our 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 $2.3 billion or 24% of the loan  portfolio
at June 30,  2006.  The  outstanding  balance of  commercial  real estate  loans
increased $218 million, or 41% annualized since March 31, 2006. Construction and
land  development  loans  totaled $790  million,  up $104 million over March 31,
2006.  Construction and land development  included $608 million of loans secured
by single family  residential  lots and premises.  The major components of other
commercial  real estate  loans were office  buildings - $464  million and retail
facilities - $352 million.

Residential  mortgage loans,  excluding  mortgage loans held for sale,  included
$360  million of home  equity  loans,  $406  million of loans held for  business
relationship  purposes,  $236  million of  adjustable  rate  mortgages  and $178
million of loans held for community  development.  Consumer  loans included $396
million of  indirect  automobile  loans,  up $25 million  since March 31,  2006.
Approximately  $350  million  of these  loans  were  purchased  from  dealers in
Oklahoma.  Growth during the quarter  included $16 million from indirect lending
activities in Arkansas and $13 million in Oklahoma.

Table 16  presents  the  distribution  of the major  loan  categories  among our
primary market areas.

 19


---------------------------------------------------------------------------------------------------------------------
Table 16 - Loans by Principal Market Area
(In thousands)

                                          June 30,        March 31,       Dec. 31,        Sept. 30,        June 30,
                                           2006             2006           2005             2005            2005
                                    ---------------------------------------------------------------------------------
Oklahoma:
                                                                                        
   Commercial                        $   3,212,851    $   3,074,406   $   3,159,683   $   3,101,209    $   3,026,311
   Commercial real estate                1,019,815          936,030         862,700         890,737          856,617
   Residential mortgage                    855,087          847,848         842,757         839,344          827,431
   Residential mortgage held for sale       54,026           40,299          51,666          46,306           74,410
   Consumer                                479,508          468,920         466,180         472,899          425,318
                                    ---------------------------------------------------------------------------------
     Total Oklahoma                  $   5,621,287    $   5,367,503   $   5,382,986   $   5,350,495    $   5,210,087
                                    ---------------------------------------------------------------------------------

Texas:
   Commercial                        $   1,548,545    $   1,420,860   $   1,356,611   $   1,294,606    $   1,182,307
   Commercial real estate                  669,698          604,413         569,921         537,576          509,472
   Residential mortgage                    212,987          200,957         199,726         196,593          196,457
   Consumer                                 84,212           87,669          89,017          89,329           90,245
                                    ---------------------------------------------------------------------------------
     Total Texas                     $   2,515,442    $   2,313,899   $   2,215,275   $   2,118,104    $   1,978,481
                                    ---------------------------------------------------------------------------------

New Mexico:
   Commercial                        $     334,984    $     348,930   $     383,325   $     354,087    $     340,378
   Commercial real estate                  237,020          228,955         232,564         223,236          219,175
   Residential mortgage                     73,281           68,810          65,784          65,203           63,821
   Consumer                                 13,404           13,820          15,137          15,195           15,813
                                    ---------------------------------------------------------------------------------
     Total Albuquerque               $     658,689    $     660,515   $     696,810   $     657,721    $     639,187
                                    ---------------------------------------------------------------------------------

Arkansas:
   Commercial                        $      80,539    $      74,423   $      79,719   $      54,703    $      54,703
   Commercial real estate                   87,080           80,529          75,483          85,600           76,803
   Residential mortgage                     15,067           13,069          13,044          12,097           11,674
   Consumer                                 51,166           33,548          25,659          20,397            4,560
                                    ---------------------------------------------------------------------------------
     Total Northwest Arkansas        $     233,852    $     201,569   $     193,905   $     172,797    $     147,740
                                    ---------------------------------------------------------------------------------

Colorado:
   Commercial                        $     299,380    $     267,928   $     270,108   $     219,208    $     210,142
   Commercial real estate                  155,453          134,771         133,537         132,741          125,120
   Residential mortgage                     21,113           20,383          21,918          26,186           27,292
   Consumer                                 31,939           31,487          27,871          26,126           27,996
                                    ---------------------------------------------------------------------------------
     Total Colorado                  $     507,885    $     454,569   $     453,434   $     404,261    $     390,550
                                    ---------------------------------------------------------------------------------

Arizona:
   Commercial                        $      63,019    $      52,274   $      50,489   $      43,877    $      45,938
   Commercial real estate                  153,870          120,262         115,697         102,734           74,672
   Residential mortgage                     33,913           26,270          26,102          27,136           24,999
   Consumer                                  6,511            5,098           5,280           6,443            3,026
                                    ---------------------------------------------------------------------------------
     Total Arizona                   $     257,313    $     203,904   $     197,568   $     180,190    $     148,635
                                    ---------------------------------------------------------------------------------
Total BOK Financial loans            $   9,794,468    $   9,201,959   $   9,139,978   $   8,883,568    $   8,514,680
                                    ---------------------------------------------------------------------------------


Loan Commitments

BOK Financial enters into certain  off-balance sheet  arrangements in the normal
course of business.  These arrangements  included loan commitments which totaled
$4.9 billion and standby  letters of credit  which  totaled $481 million at June
30, 2006. 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.

 20

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 from 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
rating, 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 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  counterparty's
ability to provide margin collateral was impaired.

Derivative contracts are carried at fair value. At June 30, 2006, the fair value
of derivative  contracts  reported as assets under these  programs  totaled $414
million.  This  included  energy  contracts  with fair  values of $365  million,
interest  rate  contracts  with fair values of $29 million and foreign  exchange
contracts  with  fair  values  of $17  million.  The  aggregate  fair  values of
derivative  contracts  reported as liabilities under these programs totaled $416
million.  At March 31, 2006, the fair values of assets and liabilities  reported
under  these  programs  totaled  $401  million and $402  million,  respectively.
Approximately  96% of the fair value of asset contracts was with customers.  The
credit risk of these  contracts is generally  backed by energy  production.  The
remaining  4% was with  counterparties.  The maximum net  exposure to any single
customer or counterparty totaled $89 million.

Summary of Loan Loss Experience

The reserve for loan losses, which is available to absorb losses inherent in the
loan  portfolio,  totaled  $105  million at June 30,  2006,  compared  with $104
million at March 31,  2006 and $109  million  at June 30,  2005.  These  amounts
represented 1.07%,  1.14% and 1.29% of outstanding  loans,  excluding loans held
for sale,  at June 30,  2006,  March 31, 2006 and June 30,  2005,  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  337% of the
outstanding  balance of nonperforming loans at June 30, 2006, compared with 323%
at March 31, 2006 and 269% at June 30,  2005.  Nonperforming  loans  totaled $31
million at June 30,  2006,  compared  with $32 million at March 31, 2006 and $41
million at June 30,  2005.  Net loans  charged off during the second  quarter of
2006 totaled $3.8 million, up from $1.6 million in the first quarter of 2006 and
$2.3 million for the second quarter of 2005.

The Company considers credit risk from loan commitments and letters of credit in
its  evaluation  of the  adequacy  of the reserve  for loan  losses.  A separate
reserve for off-balance  sheet credit risk is maintained.  Table 17 presents the
trend of reserves  for  off-balance  sheet  credit  losses and the  relationship
between the reserve and loan commitments.  The relationship between the combined
reserve for credit losses and outstanding  loans is also presented to facilitate
comparison  with peer  banks and  others  who have not  adopted  this  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

 21

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.


------------------------------------------------------------------------------------------------------------------------------
Table 17 - Summary of Loan Loss Experience
(In thousands)
                                                                           Three Months Ended
                                            ----------------------------------------------------------------------------------
                                                 June 30,         March 31,       Dec. 31,       Sept. 30,         June 30,
                                                   2006             2006           2005            2005             2005
                                            ----------------------------------------------------------------------------------
Reserve for loan losses:
                                                                                               
Beginning balance                           $     104,143     $     103,876   $     109,621  $     108,884    $     108,958
   Loans charged off:
      Commercial                                    2,523             1,242           5,772            819            1,641
      Commercial real estate                            -                 -              84            730               90
      Residential mortgage                            363               207             226            382              423
      Consumer                                      2,995             2,700           3,497          3,380            2,890
------------------------------------------------------------------------------------------------------------------------------
      Total                                         5,881             4,149           9,579          5,311            5,044
------------------------------------------------------------------------------------------------------------------------------
   Recoveries of loans previously charged off:
      Commercial                                      720               847             826            711            1,435
      Commercial real estate                            6                40               8              7               73
      Residential mortgage                             20                97             133             21               16
      Consumer                                      1,339             1,580           1,197          1,238            1,233
------------------------------------------------------------------------------------------------------------------------------
      Total                                         2,085             2,564           2,164          1,977            2,757
------------------------------------------------------------------------------------------------------------------------------
Net loans charged off                               3,796             1,585           7,415          3,334            2,287
Provision for loan losses                           4,178             1,852           1,670          4,071            1,142
Additions due to acquisitions                           -                 -               -              -            1,071
------------------------------------------------------------------------------------------------------------------------------
Ending balance                              $     104,525     $     104,143   $     103,876  $     109,621    $     108,884
------------------------------------------------------------------------------------------------------------------------------
Reserve for off-balance sheet credit
   losses:
Beginning balance                           $      22,122     $      20,574   $      17,794  $      17,889    $       16,984
Provision for off-balance sheet credit losses        (383)            1,548           2,780            (95)              873
Additions due to acquisitions                           -                 -               -              -                32
------------------------------------------------------------------------------------------------------------------------------
Ending balance                              $      21,739     $      22,122   $      20,574  $      17,794    $       17,889
------------------------------------------------------------------------------------------------------------------------------
Total provision for credit losses           $       3,795     $       3,400   $       4,450  $       3,976    $        2,015
------------------------------------------------------------------------------------------------------------------------------
Reserve for loan losses to loans
    outstanding at period-end (1)                   1. 07%            1.14%           1.14%          1.24%            1.29%
Net charge-offs (annualized)
    to average loans (1)                             0.16              0.07            0.33           0.16             0.11
Total provision for credit losses
    (annualized) to average loans (1)                0.16              0.15            0.20           0.19             0.10
Recoveries to gross charge-offs                     35.45             61.80           22.59          37.22            54.66
Reserve for loan losses as a multiple of
    net charge-offs (annualized)                     6.88x            16.43x           3.50x          8.22x           11.90x
Reserve for off-balance sheet credit losses to
    off-balance sheet credit commitments             0.41%             0.36%           0.42%          0.41%            0.42%
Combined reserves for credit losses to loans
    outstanding at period-end (1)                    1.30              1.38            1.37           1.44             1.50
------------------------------------------------------------------------------------------------------------------------------
(1) Excludes residential mortgage loans held for sale.


Specific  impairment  reserves are  determined  through  evaluation of estimated
future cash flows and collateral  value. At June 30, 2006,  specific  impairment
reserves  totaled $3.3 million on total impaired loans of $27 million.  Required
specific impairment reserves decreased $1.7 million from March 31, 2006.

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 June 30,
2006, the ranges of potential losses for the more significant factors were:

General economic conditions - $4.6 million to $8.0 million
Concentration in large loans - $1.0 million to $2.0 million

The provision for credit losses  totaled $3.8 million for the second  quarter of
2006,  compared with $3.4 million for the first quarter of 2006 and $2.0 for the
second  quarter of 2005.  Factors  considered in  determining  the provision for
credit

 22

losses included an increase in net losses during the quarter,  partially  offset
by  decreases  in  the  outstanding  balances  of  classified,   criticized  and
non-performing loans.

Nonperforming Assets

Information  regarding  nonperforming  assets, which totaled $39 million at June
30,  2006  and $40  million  at March  31,  2006,  is  presented  in  Table  18.
Nonperforming  assets included  non-accrual  loans and excluded loans 90 days or
more past due but still accruing interest. Non-accrual loans totaled $31 million
at  June  30,  2006  and  $32  million  at  March  31,  2006.  Newly  identified
non-accruing  loans  totaled  $5  million  during  the  second  quarter of 2006.
Non-accruing loans decreased $3 million for loans charged off or foreclosed, and
$3 million for cash payments  received.  The increase in  non-accruing  consumer
loans during the second quarter of 2006 included a single $3.6 million loan that
was originated for personal investment purposes. Management does not believe the
increase  indicates  a change  in the  trend of level of  non-accruing  consumer
loans.


----------------------------------------------------------------------------------------------------------------------
Table 18 - Nonperforming Assets
(In thousands)
                                                   June 30,       March 31,     Dec. 31,     Sept. 30,      June 30,
                                                     2006           2006          2005         2005          2005
                                               -----------------------------------------------------------------------
Nonaccrual loans:
                                                                                         
   Commercial                                   $    15,087   $    17,073    $    11,673  $    17,920   $    21,173
   Commercial real estate                             4,369         6,444          5,370       10,422        11,722
   Residential mortgage                               7,604         8,057          7,347        8,531         7,154
   Consumer                                           3,916           655            772          480           478
----------------------------------------------------------------------------------------------------------------------
   Total nonaccrual loans                            30,976        32,229         25,162       37,353        40,527
Other nonperforming assets                            8,257         8,196          8,476        5,069         5,062
----------------------------------------------------------------------------------------------------------------------
   Total nonperforming assets                   $    39,233   $    40,425    $    33,638  $    42,422   $    45,589
----------------------------------------------------------------------------------------------------------------------
Ratios:
 Reserve for loan losses to nonaccrual loans        337.44%       323.13%        412.83%      293.48%       268.67%
 Combined reserves for credit
    losses to nonaccrual loans                      407.62        391.77         494.60        341.11       312.81
 Nonaccrual loans to period-end loans (2)             0.32          0.35           0.28         0.42          0.48
----------------------------------------------------------------------------------------------------------------------
Loans past due (90 days)  (1)                  $     9,630   $     3,919     $    8,708   $   10,027   $     7,125
----------------------------------------------------------------------------------------------------------------------

(1)  Includes residential mortgages guaranteed
     by agencies of the U.S.Government.        $     2,310   $     1,595    $     2,021  $     3,646   $     3,713

(2) Excludes residential mortgage loans held for sale.
----------------------------------------------------------------------------------------------------------------------


The loan review process also identifies  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 $23 million at both June 30, 2006 and March 31,
2006.  The current  composition of potential  problem loans by primary  industry
included  healthcare - $12  million,  services - $7 million and real estate - $2
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 Express Bank call
center.  Commercial deposit growth is supported by offering treasury  management
and lockbox services.

 23

Total  deposits  averaged  $11.2 billion for the second  quarter of 2006, up $71
million, or 3% annualized compared with average deposits in the first quarter of
2006.  Average deposits  attributed to consumer  banking  increased $91 million,
including $49 million in Oklahoma,  $26 million in New Mexico and $15 million in
Texas,  and average  deposits  attributed  to wealth  management  increased  $56
million,  including  $43 million in Colorado.  The growth in consumer and wealth
management  deposits resulted from promotional and incentive programs across the
Company.  In addition,  average deposits  attributed to mortgage banking,  which
consisted  primarily of escrow funds,  increased $24 million.  Growth in average
consumer,  wealth  management and mortgage banking deposits was partially offset
by a $62 million decrease in average commercial banking deposits,  including $35
million in Oklahoma and $32 million in Texas. Average deposits attributed to the
Company's funds management  activities decreased $29 million due to lower public
funds and brokered deposits.

Core  deposits,  which we define as  deposits of less than  $100,000,  excluding
public funds and brokered deposits, averaged $5.5 billion for the second quarter
of 2006, an annualized  increase of 5%.  Average core deposits  comprised 49% of
total deposits for the second quarter of 2006. Deposit accounts with balances in
excess of $100,000  increased at a 3% annualized  rate to $4.6 billion or 41% of
total average deposits for both the second and the first quarters of 2006.

The  distribution  of deposit  accounts among our principal  markets is shown in
Table 19.

 24


---------------------------------------------------------------------------------------------------------------------
Table 19 - Deposits by Principal Market Area
(In thousands)
                                          June 30,       March 31,        Dec. 31,        Sept. 30,        June 30,
                                           2006            2006            2005             2005            2005
                                    ---------------------------------------------------------------------------------
Oklahoma:
                                                                                        
   Demand                            $     908,034   $     950,582    $   1,003,284   $     959,169    $   1,028,640
   Interest-bearing:
     Transaction                         2,732,312       2,937,228        3,002,610       2,411,175        2,367,511
     Savings                                88,218          93,093           85,837          86,220           89,972
     Time                                2,662,770       2,623,352        2,564,337       2,728,224        2,450,730
                                    ---------------------------------------------------------------------------------
   Total interest-bearing                5,483,300       5,653,673        5,652,784       5,225,619        4,908,213
                                    ---------------------------------------------------------------------------------
     Total Oklahoma                  $   6,391,334   $   6,604,255    $   6,656,068   $   6,184,788    $   5,936,853
                                    ---------------------------------------------------------------------------------
Texas:
   Demand                            $     638,157   $     551,411    $     615,732   $     533,475    $     478,855
   Interest-bearing:
     Transaction                         1,530,491       1,455,856        1,535,570       1,299,279        1,292,938
     Savings                                26,370          27,827           27,398          29,620           29,635
     Time                                  717,027         726,530          735,731         633,785          606,528
                                    ---------------------------------------------------------------------------------
   Total interest-bearing                2,273,888       2,210,213        2,298,699       1,962,684        1,929,101
                                    ---------------------------------------------------------------------------------
     Total Texas                     $   2,912,045   $   2,761,624    $   2,914,431   $   2,496,159    $   2,407,956
                                    ---------------------------------------------------------------------------------
New Mexico:
   Demand                            $     147,307   $     159,125    $     129,289   $     155,517    $     139,107
   Interest-bearing:
     Transaction                           410,166         408,160          381,099         338,706          306,230
     Savings                                16,860          17,805           17,839          17,614           17,875
     Time                                  494,426         483,428          453,314         454,561          449,180
                                    ---------------------------------------------------------------------------------
   Total interest-bearing                  921,452         909,393          852,252         810,881          773,285
                                    ---------------------------------------------------------------------------------
     Total New Mexico                $   1,068,759   $   1,068,518    $     981,541   $     966,398    $     912,392
                                    ---------------------------------------------------------------------------------

Arkansas:
   Demand                            $      11,521   $      11,629    $      10,429   $      13,772    $      10,890
   Interest-bearing:
     Transaction                            20,577          26,675           22,354          23,335           24,816
     Savings                                 1,072           1,051            1,058           1,268            1,284
     Time                                   69,418          73,082           75,034          81,510           83,388
                                    ---------------------------------------------------------------------------------
   Total interest-bearing                   91,067         100,808           98,446         106,113          109,488
                                    ---------------------------------------------------------------------------------
     Total Arkansas                  $     102,588   $     112,437    $     108,875   $     119,885    $     120,378
                                    ---------------------------------------------------------------------------------
Colorado:
   Demand                            $      45,214   $      56,419    $      61,647   $      51,978    $      32,044
   Interest-bearing:
     Transaction                           245,504         258,801          258,668         216,718          228,881
     Savings                                13,786          16,315           17,772          16,568           16,791
     Time                                  379,239         309,068          264,020         221,753          117,130
                                    ---------------------------------------------------------------------------------
   Total interest-bearing                  638,529         584,184          540,460         455,039          362,802
                                    ---------------------------------------------------------------------------------
     Total Colorado                  $     683,743   $     640,603    $     602,107   $     507,017    $     394,846
                                    ---------------------------------------------------------------------------------
Arizona:
   Demand                            $      73,696   $      55,421    $      45,567   $      42,784    $      60,412
   Interest-bearing:
     Transaction                            67,841          57,400           56,994          71,510           56,624
     Savings                                 2,702           3,380            4,111           3,862            4,771
     Time                                    4,077           4,608            5,624           6,802            6,574
                                    ---------------------------------------------------------------------------------
   Total interest-bearing                   74,620          65,388           66,729          82,174           67,969
                                    ---------------------------------------------------------------------------------
    Total Arizona                    $     148,316   $     120,809    $     112,296   $     124,958    $     128,381
                                    ---------------------------------------------------------------------------------
Total BOK Financial deposits         $  11,306,785   $  11,308,246    $  11,375,318   $  10,399,205    $   9,900,806
                                    ---------------------------------------------------------------------------------


 25

Borrowings and Capital

BOK Financial  (parent company) has a $100 million  unsecured  revolving line of
credit  with  certain  banks  that  expires  in  December  2010.  There  was  no
outstanding  principal  balance  on this  credit  agreement  at June  30,  2006.
Interest  is based on LIBOR  plus a defined  margin  that is  determined  by the
Company's  credit  rating or a base rate.  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 0.500% 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 and to exceed minimum net
worth ratios.  BOK Financial  met all of the  restrictive  covenants at June 30,
2006.

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  $233  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 $166
million under this policy.

Equity  capital for BOK Financial  totaled $1.6 billion at June 30, 2006, up $18
million during the quarter.  Retained earnings,  net income less cash dividends,
provided $45 million of the increase.  Growth in capital from retained  earnings
was  partially   offset  by  a  $25  million   increase  in  accumulated   other
comprehensive  losses due  primarily to net  unrealized  losses on available for
sale  securities  and $5 million of  treasury  stock  purchases.  The  remaining
increase in capital  during the second  quarter of 2006 resulted  primarily from
activity in employee stock options.

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.  The  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   programs  may  be  suspended  or
discontinued  at any time without  prior  notice.  During the second  quarter of
2006,  the Company  repurchased  108,322  common  shares at an average  price of
$48.56 per share.  The Company may  repurchase  1.8 million common shares in the
future under this program.

Cash  dividends of $10.0  million or $0.15 per common share were paid during the
second  quarter  of 2006.  On July 25,  2006 the Board of  Directors  approved a
quarterly cash dividend of $0.15 per common share.  The dividend will be payable
on or about August 31, 2006 to shareholders of record on August 14, 2006.

BOK  Financial  and  its  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  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.

For a banking institution to qualify as well capitalized,  its Tier 1, Total and
Leverage  capital ratios must be at least 6%, 10% and 5%,  respectively.  All of
the Company's banking  subsidiaries  exceeded the regulatory  definition of well
capitalized.  The capital ratios for BOK Financial on a  consolidated  basis are
presented in Table 20.

 26


--------------------------------------------------------------------------------------------------------------------
Table 20 - Capital Ratios                    June 30,       March 31,       Dec. 31,      Sept. 30,     June 30,
                                               2006            2006           2005          2005          2005
                                          --------------------------------------------------------------------------
Average shareholders' equity
                                                                                            
  to average assets                            9.49%           9.51%          9.30%          9.54%         9.56%
Risk-based capital:
  Tier 1 capital                              10.00           10.16           9.84           9.71          9.84
  Total capital                               12.14           12.41          12.10          12.04         12.54
Leverage                                       8.74            8.60           8.30           8.01          8.08


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.  Any holder of BOK
Financial common shares issued in this acquisition may annually make a claim for
the excess of the  guaranteed  price over 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 guaranty.

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 BOK  Financial  common stock on June 30,
2006 was $49.67 per share.

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  position  the  balance  sheet to be neutral to
interest rate changes.  As previously  noted in the Net Interest Revenue section
of this report,  management acquires securities that are funded by borrowings in
the capital markets.  The average duration of these securities is expected to be
approximately  3.1  years  based on a range  of  interest  rate  and  prepayment
assumptions.

BOK  Financial  also uses  interest  rate swaps in managing  its  interest  rate
sensitivity. These products are generally used to more closely match interest on
certain  variable-rate loans with funding sources and long-term  certificates of
deposit with earning  assets.  During the second  quarter of 2006,  net interest
revenue  was  reduced  by  $2.1  million  from  periodic  settlements  of  these
contracts.  Net interest  revenue was  decreased by $187  thousand from periodic
settlements of these  contracts in the second quarter of 2005.  These  contracts
are  carried on the  balance  sheet at fair value and  changes in fair

 27

value are reported in income as derivatives  gains or losses. A net loss of $173
thousand was  recognized in the second quarter of 2006 compared to a net loss of
$ 498 thousand in same period of 2005 from adjustments of these swaps and hedged
liabilities  to fair  value.  Credit  risk from  interest  rate swaps is closely
monitored as part of our overall  process of managing  credit  exposure to other
financial institutions.

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  scenario  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  included 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 21 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.

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.


Table 21 - Interest Rate Sensitivity
 (Dollars in Thousands)

                                      200 bp Increase                200 bp Decrease                Most Likely
                                 --------------------------    ---------------------------    -------------------------
                                     2006         2005            2006          2005             2006         2005
                                 ------------- ------------    ------------ --------------    ------------ ------------
Anticipated impact over the
   next twelve months on
                                                                                                
   net interest revenue           $  (4,269)     $ 8,363           $ 6,052        ***          $     (501)     $ 4,726
                                       (0.8)%        1.8%              1.1%       ***                (0.1)%        1.0%
-------------------------------- --------------- ------------ --- ----------- -------------- -- ----------- ------------
***A 200 basis point decrease was not computed in 2005 due to low market
interest rates.


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.

 28

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 June 30, 2006, the VAR was $557 thousand.  The
greatest VAR during the quarter was $650 thousand.

Controls and Procedures

As required by Rule 13a-15(b),  BOK Financial's management,  including the Chief
Executive Officer and Chief Financial Officer, conducted an evaluation as of the
end of the period covered by their report, of the effectiveness of the Company's
disclosure  controls and  procedures as defined in Exchange Act Rule  13a-15(e).
Based on that  evaluation,  the Chief  Executive  Officer  and  Chief  Financial
Officer concluded that the disclosure  controls and procedures were effective as
of the end of the period covered by this report.  As required by Rule 13a-15(d),
BOK  Financial's  management,  including the Chief  Executive  Officer and Chief
Financial  Officer,  also  conducted an  evaluation  of the  Company's  internal
controls  over  financial  reporting to determine  whether any changes  occurred
during the quarter covered by this report that have materially affected,  or are
reasonably  likely to materially  affect,  the Company's  internal controls over
financial  reporting.  Based on that  evaluation,  there has been no such change
during the quarter covered by this report.

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.

 29


--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
Consolidated Statements of Earnings (Unaudited)
(In Thousands Except Share and Per Share Data)
                                                                    Three Months Ended                     Six Months Ended
                                                                         June 30,                               June 30,
                                                                  2006             2005                2006                2005
                                                               ----------- --- -------------- ---- -------------- ---- ------------
Interest Revenue
                                                                                                      
Loans                                                       $  180,999      $  132,966        $    346,926        $    251,776
Taxable securities                                              56,632          51,276             111,678             100,632
Tax-exempt securities                                            2,173           1,782               4,382               3,575
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
   Total securities                                             58,805          53,058             116,060             104,207
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
Trading securities                                                 229             154                 393                 335
Funds sold and resell agreements                                   407             156                 646                 320
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
   Total interest revenue                                      240,440         186,334             464,025             356,638
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
Interest Expense
Deposits                                                        80,026          47,833             152,880              91,447
Borrowed funds                                                  34,378          22,988              62,868              39,857
Subordinated debentures                                          4,930           2,980               9,845               5,207
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
   Total interest expense                                      119,334          73,801             225,593             136,511
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
Net Interest Revenue                                           121,106         112,533             238,432             220,127
Provision for Credit Losses                                      3,795           2,015               7,195               4,015
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
Net Interest Revenue After Provision for Credit Losses         117,311         110,518             231,237             216,112
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
Other Operating Revenue
Brokerage and trading revenue                                   11,427          10,404              23,437              21,740
Transaction card revenue                                        19,951          17,979              38,459              34,522
Trust fees and commissions                                      17,751          16,259              35,696              32,275
Deposit service charges and fees                                26,341          25,347              50,327              47,520
Mortgage banking revenue                                         7,195           8,550              13,984              14,128
Other revenue                                                   10,931           8,160              21,742              15,557
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
Total fees and commissions                                      93,596          86,699             183,645             165,742
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
Gain on sales of assets                                             39           5,937                 957               6,909
Gain (loss) on securities, net                                  (2,583)          2,266              (3,804)               (371)
Gain (loss) on derivatives, net                                   (172)           (311)               (481)                467
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
Total other operating revenue                                   90,880          94,591             180,317             172,747
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
Other Operating Expense
Personnel                                                       72,369          65,333             143,601             123,772
Business promotion                                               4,802           3,870               9,605               8,300
Professional fees and services                                   4,362           4,492               8,276               8,111
Net occupancy and equipment                                     13,199          12,650              26,225              24,744
Data processing and communications                              16,157          16,381              33,152              31,480
Printing, postage and supplies                                   4,001           3,629               7,906               7,244
Net losses and operating expenses of repossessed assets             54             316                 273                 624
Amortization of intangible assets                                1,359           1,808               2,729               3,345
Mortgage banking costs                                           2,839           3,387               5,926               7,000
Change in fair value of mortgage servicing rights               (3,613)              -             (10,694)                  -
Provision for impairment of mortgage servicing rights                -           7,088                   -               1,464
Other expense                                                    6,598           7,056              12,507              12,085
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
Total other operating expense                                  122,127         126,010             239,506             228,169
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
Income Before Taxes                                             86,064          79,099             172,048             160,690
Federal and state income tax                                    31,080          28,634              62,316              58,170
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------
Net Income                                                   $  54,984       $  50,465          $  109,732        $    102,520
--------------------------------------------------------- ---- ----------- --- -------------- ---- -------------- ---- ------------

Earnings Per Share:
   Basic                                                     $    0.82       $    0.79          $     1.64        $       1.66
   Diluted                                                   $    0.82       $    0.75          $     1.63        $       1.53

Average Shares Used in Computation:
   Basic                                                      66,775,117      63,779,343        66,745,422          61,618,602
   Diluted                                                    67,317,681      66,986,428        67,289,335          66,967,146
--------------------------------------------------------- --- ------------ --- -------------- ---- -------------- ---- ------------


See accompanying notes to consolidated financial statements.

 30


--------------------------------------------------------------------------------------------------------------------
Consolidated Balance Sheets
(In Thousands Except Share Data)
                                                                    June 30,       December 31,         June 30,
                                                                      2006             2005               2005
                                                                  --------------------------------------------------
                                                                   (Unaudited)                         (Unaudited)
Assets
                                                                                          
Cash and due from banks                                        $      618,064    $      684,857    $      653,047
Funds sold and resell agreements                                       25,469            14,465            27,176
Trading securities                                                     25,702            18,633            10,588
Securities:
  Available for sale                                                4,728,434         4,821,575         4,311,759
  Available for sale securities pledged to creditors                        -                 -           576,207
  Investment (fair value:  June 30, 2006 - $217,319;
    December 31, 2005 - $243,406;
    June 30, 2005 - $218,181)                                         223,411           245,125           220,401
  Mortgage trading securities                                          82,983                 -                 -
--------------------------------------------------------------------------------------------------------------------
    Total securities                                                5,034,828         5,066,700         5,108,367
--------------------------------------------------------------------------------------------------------------------
Loans                                                               9,794,468         9,139,978         8,514,680
Less reserve for loan losses                                         (104,525)         (103,876)         (108,885)
--------------------------------------------------------------------------------------------------------------------
  Loans, net of reserve                                             9,689,943         9,036,102         8,405,795
--------------------------------------------------------------------------------------------------------------------
Premises and equipment, net                                           177,142           179,627           174,526
Accrued revenue receivable                                            100,138            99,874            82,868
Intangible assets, net                                                260,293           263,022           260,279
Mortgage servicing rights, net                                         73,103            54,097            46,200
Real estate and other repossessed assets                                8,257             8,476             5,062
Bankers' acceptances                                                   30,430            33,001            40,949
Derivative contracts                                                  414,367           452,878           271,692
Other assets                                                          466,349           415,337           367,603
--------------------------------------------------------------------------------------------------------------------
         Total assets                                          $   16,924,085    $   16,327,069    $   15,454,152
--------------------------------------------------------------------------------------------------------------------

Liabilities and Shareholders' Equity
Noninterest-bearing demand deposits                            $    1,823,929    $    1,865,948    $    1,749,948
Interest-bearing deposits:
  Transaction                                                       5,006,891         5,257,295         4,277,000
  Savings                                                             149,008           154,015           160,328
  Time                                                              4,326,957         4,098,060         3,713,530
--------------------------------------------------------------------------------------------------------------------
  Total deposits                                                   11,306,785        11,375,318         9,900,806
--------------------------------------------------------------------------------------------------------------------
Funds purchased and repurchase agreements                           2,342,339         1,337,911         2,123,589
Other borrowings                                                      727,726         1,054,298         1,059,694
Subordinated debentures                                               290,522           295,964           297,882
Accrued interest, taxes and expense                                    74,580            92,219            66,026
Bankers' acceptances                                                   30,430            33,001            40,949
Due on unsettled security transactions                                  3,335             8,429            99,664
Derivative contracts                                                  437,182           466,669           281,314
Other liabilities                                                     128,176           124,106           103,253
--------------------------------------------------------------------------------------------------------------------
         Total liabilities                                         15,341,075        14,787,915        13,973,177
--------------------------------------------------------------------------------------------------------------------
Shareholders' equity:
Common stock ($.00006 par value; 2,500,000,000 shares authorized;
  shares issued and outstanding: June 30, 2006 - 68,291,976;
  December 31, 2005 -  67,904,533; June 30, 2005 - 67,556,168)              4                 4                 4
Capital surplus                                                       670,662           656,579           642,605
Retained earnings                                                   1,083,819           990,422           904,757
Treasury stock (shares at cost: June 30, 2006 -  1,451,735;
  December 31, 2005 - 1,202,125; June 30, 2005 - 1,101,838)           (51,780)          (40,040)          (35,354)
Accumulated other comprehensive loss                                 (119,695)          (67,811)          (31,037)
--------------------------------------------------------------------------------------------------------------------
         Total shareholders' equity                                 1,583,010         1,539,154         1,480,975
--------------------------------------------------------------------------------------------------------------------
         Total liabilities and shareholders' equity            $   16,924,085    $   16,327,069    $   15,454,152
--------------------------------------------------------------------------------------------------------------------

See accompanying notes to consolidated financial statements.

 31


---------------------------------------------------------------------------------------------------------------------------
Consolidated Statements of Changes in
Shareholders' Equity (Unaudited)
(In Thousands)
                                                             Accumulated
                                                                Other
                         Preferred Stock     Common Stock   Comprehensive Capital   Retained    Treasury Stock
                       ------------------------------------                                  --------------------
                         Shares   Amount    Shares   Amount     Loss      Surplus   Earnings    Shares    Amount     Total
                       ----------------------------------------------------------------------------------------------------
Balances at
                                                                                    
  December 31, 2004     249,975   $ 12      60,421    $  4   $ (11,625)  $631,747   $809,261     998    $(30,905)$1,398,494
Comprehensive income:
  Net income                  -      -           -       -           -          -    102,520       -           -    102,520
  Other comprehensive
     income, net of tax (1)   -      -           -       -     (19,412)         -          -       -           -    (19,412)
                                                                                                                 ----------
    Comprehensive income                                                                                             83,108
                                                                                                                 ----------
Treasury stock purchase       -      -           -       -           -          -          -      60      (2,439)    (2,439)
Exercise of stock options     -      -         214       -           -      5,242          -      44      (2,010)     3,232
Conversion of preferred
 stock to common       (249,975)   (12)      6,921       -           -         12          -       -           -          -
Tax benefit on exercise of
 stock options                -      -           -       -           -      1,005          -       -           -      1,005
Stock-based compensation      -      -           -       -           -      4,599          -       -           -      4,599
Cash dividends on:
  Preferred stock             -      -           -       -           -          -       (375)      -           -       (375)
  Common stock                -      -           -       -           -          -     (6,649)      -           -     (6,649)
---------------------------------------------------------------------------------------------------------------------------

Balances at
    June 30, 2005             -    $ -      67,556   $   4  $  (31,037) $ 642,605  $ 904,757   1,102    $(35,354)$1,480,975
---------------------------------------------------------------------------------------------------------------------------

Balances at
  December 31, 2005           -   $  -      67,905   $   4  $  (67,811) $ 656,579  $ 990,422   1,202    $(40,040)$1,539,154
Effect of implementing
   FAS 156, net of
   income taxes               -      -           -       -           -          -        383       -           -        383
Comprehensive income:
   Net income                 -      -           -       -           -          -    109,732       -           -    109,732
   Other comprehensive
    income, net of tax (1)    -      -           -       -     (51,884)         -          -       -           -    (51,884)
                                                                                                                 ----------
    Comprehensive income                                                                                             57,848
                                                                                                                 ----------
Treasury stock purchase       -      -           -       -           -          -          -     169      (8,019)    (8,019)
Exercise of stock options     -      -         387       -           -      9,423          -      81      (3,721)     5,702
Tax benefit on exercise of
   stock options              -      -           -       -           -      1,518          -       -           -      1,518
Stock-based compensation      -      -           -       -           -      3,142          -       -           -      3,142
Cash dividends on
   common stock               -      -           -       -           -          -    (16,718)      -           -    (16,718)
---------------------------------------------------------------------------------------------------------------------------

Balances at
    June 30, 2006             -    $ -      68,292   $   4  $ (119,695) $ 670,662 $1,083,819   1,452    $(51,780)$1,583,010
---------------------------------------------------------------------------------------------------------------------------


(1)                                            June 30, 2006   June 30, 2005
                                               -------------   -------------
Changes in other comprehensive loss:
  Unrealized losses on securities               $ (84,970)      $ (29,291)
  Unrealized losses on cash flow hedges              (183)         (1,507)
  Tax benefit on unrealized losses                 30,843          11,149
  Reclassification adjustment for losses
    realized and included in net income             3,804             371
  Reclassification adjustment for tax
    benefit on realized losses                     (1,378)           (134)
                                             -------------------------------
Net change in other comprehensive loss          $ (51,884)      $ (19,412)
                                             -------------------------------

See accompanying notes to consolidated financial statements.

 32


---------------------------------------------------------------------------------------------------------------------------
Consolidated Statements of Cash Flows (Unaudited)
(In Thousands)
                                                                                        Six Months Ended June 30,
                                                                              ---------------------------------------------
                                                                                      2006                      2005
                                                                              ---------------------------------------------
Cash Flows From Operating Activities:
                                                                                                  
Net income                                                                      $    109,732            $    102,520
Adjustments to reconcile net income to net cash provided by operating
activities:
  Provision for credit losses                                                          7,195                   4,015
  Change in fair value of mortgage servicing rights                                  (10,694)                      -
  Provision for mortgage servicing rights impairment                                       -                   1,464
  Unrealized losses from derivatives                                                   5,710                   6,405
  Tax benefit on exercise of stock options                                            (1,518)                  1,005
  Stock-based compensation                                                             4,958                   1,392
  Depreciation and amortization                                                       19,671                  21,709
  Net accretion of securities discounts and premiums                                  (4,908)                   (390)
  Net gain on sale of assets                                                          (2,643)                (12,682)
  Mortgage loans originated for resale                                              (360,820)               (336,291)
  Proceeds from sale of mortgage loans held for resale                               374,165                 286,895
  Change in trading securities, including mortgage trading securities                (75,060)                   (896)
  Change in accrued revenue receivable                                                  (264)                 (3,224)
  Change in other assets                                                             (18,612)                (17,901)
  Change in accrued interest, taxes and expense                                      (17,639)                 (5,036)
  Change in other liabilities                                                          2,188                  (6,769)
---------------------------------------------------------------------------------------------------------------------------
Net cash provided by operating activities                                             31,461                  42,216
---------------------------------------------------------------------------------------------------------------------------
Cash Flows From Investing Activities:
  Proceeds from maturities of investment securities                                   39,405                  36,969
  Proceeds from maturities of available for sale securities                          258,666                 484,713
  Purchases of investment securities                                                 (18,240)                (36,279)
  Purchases of available for sale securities                                        (408,732)             (1,780,288)
  Proceeds from sales of investment securities                                           447                       -
  Proceeds from sales of available for sale securities                               142,073                 969,184
  Loans originated or acquired net of principal collected                           (735,081)               (612,790)
  Proceeds from (payments on) derivative asset contracts                             (28,228)                  2,661
  Net change in other investment assets                                                  978                  31,442
  Proceeds from disposition of assets                                                 77,469                  83,664
  Purchases of assets                                                                (24,848)                (21,310)
  Cash and cash equivalents of subsidiaries and branches acquired and sold, net            -                 (29,093)
---------------------------------------------------------------------------------------------------------------------------
  Net cash used by investing activities                                             (696,091)               (871,127)
---------------------------------------------------------------------------------------------------------------------------
Cash Flows From Financing Activities:
  Net change in demand deposits, transaction deposits and savings accounts           (297,430)               156,730
  Net change in time deposits                                                        233,133                  71,138
  Net change in other borrowings                                                     677,856                 707,776
  Pay down of other borrowings                                                             -                 (95,000)
  Issuance of subordinated debenture                                                       -                 147,855
  Proceeds from (payments on) derivative liability contracts                          27,305                  (8,145)
  Net change in derivative margin accounts                                            (9,412)               (152,617)
  Change in amount receivable (due) on unsettled security transactions                (5,094)                156,537
  Issuance of preferred, common and treasury stock, net                                5,702                   3,232
  Tax benefit on exercise of stock options                                             1,518                       -
  Repurchase of common stock                                                          (8,019)                 (2,439)
  Dividends paid                                                                     (16,718)                 (7,024)
---------------------------------------------------------------------------------------------------------------------------
Net cash provided by financing activities                                            608,841                 978,043
---------------------------------------------------------------------------------------------------------------------------
Net increase (decrease) in cash and cash equivalents                                 (55,789)                149,132
Cash and cash equivalents at beginning of period                                     699,322                 531,091
---------------------------------------------------------------------------------------------------------------------------
Cash and cash equivalents at end of period                                      $    643,533            $    680,223
---------------------------------------------------------------------------------------------------------------------------
Cash paid for interest                                                          $    224,281            $    134,720
---------------------------------------------------------------------------------------------------------------------------
Cash paid for taxes                                                             $     61,868            $     54,334
---------------------------------------------------------------------------------------------------------------------------
Net loans transferred to repossessed real estate and other assets               $      3,195            $      4,494
---------------------------------------------------------------------------------------------------------------------------

See accompanying notes to consolidated financial statements.

 33

Notes to Consolidated Financial Statements (Unaudited)

(1) Accounting Policies

Basis of Presentation

The unaudited  consolidated  financial  statements of BOK Financial  Corporation
("BOK  Financial"  or "the  Company")  have been  prepared  in  accordance  with
accounting  principles for interim financial  information  generally accepted in
the  United  States  and with the  instructions  to Form 10-Q and  Article 10 of
Regulation  S-X.  Accordingly,  they do not include all of the  information  and
footnotes  required by generally  accepted  accounting  principles  for complete
financial statements. In the opinion of management,  all adjustments (consisting
of normal recurring accruals)  considered necessary for a fair presentation have
been included.

The  unaudited   consolidated  financial  statements  include  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. Certain prior period amounts have been reclassified to conform to
current  period  classification.  Reclassification  affecting  the  Consolidated
Balance  Sheet as of December 31, 2005 included an increase in other assets from
$341 million to $415 million and accrued  interest,  taxes and expenses from $18
million to $92 million. This reclassification consistently presents deferred tax
assets for all periods presented.

The financial  information  should be read in conjunction  with BOK  Financial's
2005 Form 10-K filed with the Securities and Exchange Commission, which contains
audited financial statements.

Newly Adopted and Pending Accounting Policies

BOK Financial  adopted  Statement of Financial  Accounting  Standards No. 123-R,
"Share-Based  Payments"  ("FAS 123-R") as of January 1, 2006. FAS 123-R requires
companies to recognize in income  statements the grant-date  fair value of stock
options and other  equity-based  compensation  issued to employees.  Share-based
payments that will settle in equity  instruments are measured at grant-date fair
value and not remeasured for  subsequent  changes in fair value.  FAS 123-R also
requires that share-based payments that meet specified criteria to be classified
as liability  awards and carried at current fair value.  Fair value of liability
awards are remeasured at each balance sheet date until the award is settled. BOK
Financial had  previously  adopted the preferred  income  statement  recognition
methods of the original FAS 123  retroactively to its effective date of December
15, 1994. The adoption of FAS 123-R did not  significantly  affect the Company's
financial statements.

Stock options outstanding at June 30, 2006 totaled 3,810,282,  including 869,564
of vested  options and 2,940,718 of unvested  options.  Management  expects that
approximately  2.9 million of the unvested  options will vest according to their
contractual  terms.  The weighted average exercise prices of vested and unvested
options are $25.53 and $40.27, respectively.

The intrinsic  value of options  exercised  during the second  quarter and first
half of 2006 was $1.5  million and $5.9  million,  respectively.  The  intrinsic
value of options  exercised during the second quarter and first half of 2005 was
$2.2 million and $4.5 million,  respectively. The Company received cash proceeds
from stock options exercised of $1.1 million and $5.7 million,  respectively, in
the second  quarter and first half of 2006.  The Company  received cash proceeds
from stock options exercised of $1.3 million and $3.2 million,  respectively, in
the second quarter and first half of 2005.

Stock options are generally awarded  annually.  The determination of the persons
to whom stock options will be awarded and the number of options  awarded will be
made prior to, and the exercise  price of the options will be set at the closing
price on, the second business Friday in January.

The  Financial   Accounting   Standards  Board  issued  Statement  of  Financial
Accounting  Standards No. 156,  "Accounting  for Servicing of Financial  Assets"
("FAS 156") during the first quarter of 2006.  FAS 156 permitted  companies that
service financial assets to elect to carry servicing rights at either fair value
or at the lower of amortized cost or fair value. Previously,  generally accepted
accounting  principles  required  servicing rights to be carried at the lower of
amortized  cost or fair value.  FAS 156 is effective for fiscal years that begin
after September 15, 2006.  Early adoption is permitted as of the beginning of an
entity's fiscal year,  provided that the entity has not

 34

yet issued any financial statements for that year.

FAS 156 also  permitted  companies that service  financial  assets to reclassify
securities  designated  as an economic  hedge of the  servicing  rights from the
available  for sale  classification  to trading  without  tainting  management's
classification of the remaining available for sale securities portfolio.

Effective January 1, 2006, BOK Financial  designated all mortgage loan servicing
rights to be carried at fair value. An adjustment to initially  record servicing
rights at fair value increased retained earnings by $351 thousand, net of income
taxes. Additionally,  certain  specifically-identified  securities that had been
designated as economic hedges of the mortgage servicing rights were reclassified
from available for sale to trading. These securities are identified as "mortgage
trading  securities"  and are  separate  from the  Company's  normal  securities
trading  activities.  An adjustment to initially record these securities at fair
value increased retained earnings by $32 thousand, net of income taxes.

See Note 3 - Mortgage Banking Activities for additional  disclosures required by
FAS 156.

The Financial  Accounting  Standards  Board issued FASB  Interpretation  No. 48,
"Accounting  for  Uncertainty  in Income Taxes" ("FIN 48"), in June 2006. FIN 48
requires  that an uncertain  tax position  must be more likely than not of being
upheld upon audit by the taxing authority for the benefit to be recognized.  The
benefit of uncertain  tax positions  that do not meet this  criterion may not be
recognized. In addition, FIN 48 requires that the amount of tax benefit that may
be recognized for uncertain positions that meet the recognition  criterion shall
consider the amounts and  probabilities  of outcomes that could be realized upon
settlement.

FIN 48 is  effective  for  fiscal  years  beginning  after  December  15,  2006.
Management is in the process of determining the effect,  if any, the adoption of
FIN 48 will have on the financial statements.

(2) Derivatives

The fair  values of  derivative  contracts  at June 30,  2006 are as follows (in
thousands):
                                                 Assets       Liabilities
                                              ----------------------------
   Customer Risk Management Programs:
         Interest rate contracts                 $29,212         $30,700
         Energy contracts                        365,481         365,134
         Cattle contracts                          2,723           2,723
         Foreign exchange contracts               16,948          16,948
--------------------------------------------- ----------- --- ------------
   Total Customer Derivatives                    414,364         415,505

   Interest Rate Risk Management Programs:
         Interest rate contracts                       3          21,677
--------------------------------------------- ----------- --- ------------
     Total Derivative Contracts                 $414,367        $437,182
--------------------------------------------- ----------- --- ------------


(3) Mortgage Banking Activities

BOK Financial  implemented  Statement of Financial Accounting Standards No. 156,
"Accounting for Servicing of Financial  Assets" in the first quarter of 2006. An
initial   adjustment  of  the  mortgage   servicing  rights  to  fair  value  of
approximately $351 thousand,  net of income taxes, was recognized as an increase
to retained  earnings in the same period.  Also upon  implementation of FAS 156,
certain securities  designated as an economic hedge of mortgage servicing rights
were  transferred  from  the  available  for  sale  classification  to  trading.
Approximately $32 thousand was transferred from accumulated other  comprehensive
income to retained earnings for the net of tax effect of this reclassification.

At June 30, 2006,  BOK  Financial  owned the rights to service  56,686  mortgage
loans with  outstanding  principal  balances  of $5.0  billion,  including  $462
million  serviced  for  affiliates.  The  weighted  average  interest  rate  and
remaining term was 6.12% and 276 months, respectively.

On March 31, 2006,  the Company paid  approximately  $6.8 million to acquire the
rights to service  approximately

 35

$480  million  of  mortgage  loans.  Substantially  all of  these  loans  are to
borrowers in our primary market areas.

For the three and six  months  ended June 30,  2006,  mortgage  banking  revenue
includes  servicing fee income of $4.2 million and $8.3  million,  respectively.
For the three and six  months  ended June 30,  2005,  mortgage  banking  revenue
includes servicing fee income of $4.1 million and $8.2 million, respectively.

Activity  in  capitalized   mortgage  servicing  rights  and  related  valuation
allowance  during  the  six  months  ending  June  30,  2006 is as  follows  (in
thousands):


                                            Capitalized Mortgage Servicing Rights
                                         ---------------------------------------------
                                                                                        Valuation
                                            Purchased     Originated       Total        Allowance         Net
                                         ---------------- ------------ --------------- ------------- ---------------
Balance at
                                                                                        
    December 31, 2005                    $  8,606       $  52,905     $  61,511     $  (7,414)       $   54,097
Adoption of FAS 156 effective
    January 1, 2006                          (117)         (6,747)       (6,864)        7,414               550
Additions, net                              6,773           6,168        12,941             -            12,941
Change in fair value due to loan runoff    (1,154)         (4,025)       (5,179)            -            (5,179)
Change in fair value due to market
   changes                                  1,813           8,881        10,694             -            10,694
---------------------------------------- -- ---------- --- ---------- -- ---------- -- ------------- --- -----------
Balance at  June 30, 2006 (1)            $  15,921     $   57,182     $  73,103     $       -        $   73,103
---------------------------------------- -- ---------- --- ---------- -- ---------- -- ------------- --- -----------
(1) Excludes approximately $913,000 of loan servicing rights on mortgage loans
originated prior to the adoption of FAS 122.


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


                                                           June 30, 2006         December 31, 2005
                                                        -------------------    ---------------------

                                                                                 
Discount rate - risk-free rate plus a market premium            10.03%                 10.85%
-------------

Prepayment rate - based upon loan interest rate,
---------------
  original term and loan type                                6.60% -18.80%          10.42% - 20.38%

Loan servicing costs - annually per loan based upon
--------------------
  loan type                                                    $43 - $58               $35 - $46

Escrow earnings rate - indexed to rates paid on deposit
--------------------
  accounts with comparable average life                           6.09%                   5.21%



Stratification  of  the  mortgage  loan  servicing   portfolio  and  outstanding
principal  of loans  serviced  by  interest  rate at June 30,  2006  follows (in
thousands):


                                               < 5.51%      5.51% - 6.50%    6.51% - 7.50%    => 7.50%      Total
------------------------------------------ ---------------- --------------- ---------------- ----------- -------------
                                                                                          
Fair value                                 $   17,806       $    37,143     $    14,083      $    4,071  $    73,103
------------------------------------------ ---------------- --------------- ---------------- ----------- -------------
Outstanding principal of loans serviced(1) $1,098,200       $ 2,211,800     $   889,100      $  247,100  $ 4,446,200
------------------------------------------ ---------------- --------------- ---------------- ----------- -------------


(1) Excludes outstanding principal of $462 million for loans serviced for
affiliates and $58 million of mortgage loans for which there are no capitalized
mortgage servicing rights.

 36

(4)  Disposal of Available for Sale Securities

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

                                                Six Months Ended June 30,
                                           ----------------------------------
                                               2006                2005
                                           --------------     ---------------
Proceeds                                $      142,073     $      969,184
Gross realized gains                               705              4,768
Gross realized losses                             (115)            (5,139)
Related federal and state income
   tax expense (benefit)                           214               (134)

(5) Employee Benefits

BOK Financial has sponsored a defined benefit Pension Plan for all employees who
satisfied  certain age and service  requirements.  During the fourth  quarter of
2005,  the  Company  modified  the  Pension  Plan to  curtail  benefit  accruals
effective  April 1, 2006.  During the first half of 2006 and 2005,  net periodic
pension cost was approximately $1.8 million and $3.2 million, respectively.

During the second quarter of 2006,  the Company made Pension Plan  contributions
totaling $2.8 million,  which funded the remaining maximum contribution for 2005
permitted under applicable  regulations.  The Company made no other Pension Plan
contributions during the first half of 2006.

Management  has been advised that no minimum  contribution  will be required for
2006. Due to the curtailment,  the maximum  allowable  contribution for 2006 has
not yet been determined.

(6) Shareholders' Equity

On July 25, 2006, the Board of Directors of BOK Financial Corporation approved a
$0.15 per share quarterly common stock dividend.  The quarterly dividend will be
payable on or about  August  31,  2006 to  shareholders  of record on August 14,
2006.

 37

(7)  Earnings Per Share

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


                                                             Three Months Ended          Six Months Ended
                                                          -----------------------------------------------------
                                                            June 30,     June 30,     June 30,     June 30,
                                                               2006         2005        2006          2005
                                                          -----------------------------------------------------
Numerator:
                                                                                     
   Net income                                             $  54,984    $  50,465    $  109,732   $  102,520
   Preferred stock dividends                                      -            -            -          (375)
---------------------------------------------------------------------------------------------------------------
Numerator for basic earnings per share - income
   available to common shareholders                          54,984       50,465       109,732      102,145
---------------------------------------------------------------------------------------------------------------
Effect of dilutive securities:
   Preferred stock dividends                                      -            -             -          375
---------------------------------------------------------------------------------------------------------------
Numerator for diluted earnings per share - income available
   to common shareholders after assumed conversion        $  54,984    $  50,465    $  109,732   $  102,520
---------------------------------------------------------------------------------------------------------------
Denominator:
   Denominator for basic earnings per share - weighted
     average shares                                       66,775,117   63,779,343   66,745,422   61,618,602
   Effect of dilutive securities:
     Employee stock compensation plans (1)                   542,564      621,341      543,913      607,313
     Convertible preferred stock                                   -    2,585,744            -    4,741,231
---------------------------------------------------------------------------------------------------------------
Dilutive potential common shares                             542,564    3,207,085      543,913    5,348,544
---------------------------------------------------------------------------------------------------------------
Denominator for diluted earnings per share - adjusted
   weighted average shares and assumed conversions        67,317,681   66,986,428   67,289,335   66,967,146
---------------------------------------------------------------------------------------------------------------
Basic earnings per share                                  $  0.82      $  0.79      $  1.64      $  1.66
---------------------------------------------------------------------------------------------------------------
Diluted earnings per share                                $  0.82      $  0.75      $  1.63      $  1.53
---------------------------------------------------------------------------------------------------------------

(1) Excludes employee stock options with exercise
    prices greater than current market price.             136,813      897,170      867,761      877,184


(8) Reportable Segments

Reportable segments  reconciliation to the Consolidated Financial Statements for
the six months ended June 30, 2006 is as follows (in thousands):


                                                  Net            Other           Other
                                               Interest        Operating       Operating           Net         Average
                                                Revenue       Revenue(1)        Expense           Income       Assets
                                              --------------------------------------------- -- ----------- -- --------------
                                                                                               
Total reportable segments                     $  244,623      $  183,291      $  226,344       $     118,804  $  16,988,161
Unallocated items:
   Tax-equivalent adjustment                       3,162               -               -               3,162              -
   Funds management and other                     (9,353)          1,311          13,162             (12,234)      (549,984)
                                              ------------ -- ------------ -- ------------- -- ----------- -- --------------
BOK Financial consolidated                    $  238,432      $  184,602      $  239,506       $     109,732  $  16,438,177
                                              ============ == ============ == ============= == =========== == ==============


(1) Excluding financial instruments gains/(losses).

 38

Reportable segments  reconciliation to the Consolidated Financial Statements for
the six months ended June 30, 2005 is as follows (in thousands):


                                                  Net            Other           Other
                                               Interest        Operating       Operating           Net         Average
                                                Revenue       Revenue(1)        Expense           Income        Assets
                                              ------------ -- ------------ -- ------------- -- ----------- -- --------------
                                                                                            
Total reportable segments                     $  210,207      $  177,153      $  219,958       $  101,325  $  15,027,425
Unallocated items:
   Tax-equivalent adjustment                       2,501               -               -            2,501              -
   Funds management and other                      7,419          (4,502)          8,211           (1,306)       (44,748)
                                              ------------ -- ------------ -- ------------- -- ----------- -- --------------
BOK Financial consolidated                    $  220,127      $  172,651      $  228,169       $  102,520  $  14,982,677
                                              ============ == ============ == ============= == =========== == ==============


(1) Excluding financial instruments gains/(losses).

(9)  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.

(10) Financial Instruments with Off-Balance Sheet Risk

BOK Financial is a party to financial instruments with off-balance-sheet risk in
the normal course of business to meet the  financing  needs of its customers and
to manage interest rate risk. Those financial  instruments  involve,  to varying
degrees,  elements  of credit  risk in excess of the  amount  recognized  in BOK
Financial's Consolidated Balance Sheets. Exposure to credit loss in the event of
nonperformance by the other party to the financial instrument for commitments to
extend  credit and  standby  letters of credit is  represented  by the  notional
amount of those instruments.

As of June 30,  2006,  outstanding  commitments  and  letters of credit  were as
follows (in thousands):

                                               June 30,
                                                2006
                                            --------------
Commitments to extend credit                $  4,851,643
Standby letters of credit                        481,284
Commercial letters of credit                      12,318
Commitments to purchase securities                44,289

 39


-------------------------------------------------------------------------------------------------------------------------------
Six Month Financial Summary - Unaudited
Consolidated Daily Average Balances, Average Yields and Rates
(Dollars in Thousands, Except Per Share Data)
                                                                             Six Months Ended
                                          -------------------------------------------------------------------------------------
                                                         June 30, 2006                              June 30, 2005
                                          ------------------------------------------    ---------------------------------------
                                              Average         Revenue/     Yield          Average        Revenue/     Yield
                                              Balance        Expense(1)    /Rate          Balance       Expense(1)    /Rate
                                          -------------------------------------------------------------------------------------
Assets
                                                                                               
  Taxable securities (3)                  $ 4,822,591     $ 111,678      4.68 %       $ 4,730,054     $ 100,631       4.32%
  Tax-exempt securities (3)                   267,746         6,950      5.35             216,460         5,653       5.27
-------------------------------------------------------------------------------------------------------------------------------
    Total securities (3)                    5,090,337       118,628      4.71           4,946,514       106,284       4.36
-------------------------------------------------------------------------------------------------------------------------------
  Trading securities                           20,216           496      4.95              14,407           356       4.98
  Funds sold and resell agreements             26,645           646      4.89              25,562           320       2.52
  Loans (2)                                 9,319,358       347,417      7.52           8,153,378       252,179       6.24
     Less reserve for loan losses             105,756             -         -             111,300             -          -
-------------------------------------------------------------------------------------------------------------------------------
  Loans, net of reserve                     9,213,602       347,417      7.60           8,042,078       252,179       6.32
-------------------------------------------------------------------------------------------------------------------------------
    Total earning assets (3)               14,350,800       467,187      6.57          13,028,561       359,139       5.57
-------------------------------------------------------------------------------------------------------------------------------
  Cash and other assets                     2,087,377                                  1,954,116
-------------------------------------------------------------------------------------------------------------------------------
        Total assets                      $16,438,177                                $14,982,677
-------------------------------------------------------------------------------------------------------------------------------

Liabilities And Shareholders' Equity
  Transaction deposits                    $ 5,340,281       66,004       2.49%        $4,123,291        29,678        1.45%
  Savings deposits                            154,370          683       0.89            162,871           534        0.66
  Time deposits                             4,191,737       86,193       4.15          3,697,867        61,235        3.34
-------------------------------------------------------------------------------------------------------------------------------
     Total interest-bearing  deposits       9,686,388      152,880       3.18          7,984,029        91,447        2.31
-------------------------------------------------------------------------------------------------------------------------------
  Funds purchased and repurchase
   agreements                               1,926,164       44,179       4.63          1,933,438        25,954        2.71
  Other borrowings                            783,106       18,689       4.81            943,135        13,903        2.97
  Subordinated debentures                     294,124        9,845       6.75            175,531         5,207        5.98
-------------------------------------------------------------------------------------------------------------------------------
     Total interest-bearing liabilities    12,689,782      225,593       3.58         11,036,133       136,511        2.49
-------------------------------------------------------------------------------------------------------------------------------
  Demand deposits                           1,480,087                                 1,740,263
  Other liabilities                           708,299                                   780,363
  Shareholders' equity                      1,560,009                                 1,425,918
-------------------------------------------------------------------------------------------------------------------------------
Total liabilities and shareholders' equity$16,438,177                               $14,982,677
-------------------------------------------------------------------------------------------------------------------------------
  Tax-Equivalent Net Interest Revenue (3)                  241,594       2.99%                         222,628        3.08%
  Tax-Equivalent Net Interest Revenue
     To Earning Assets (3)                                               3.40                                         3.45
     Less tax-equivalent adjustment (1)                      3,162                                      2,501
-------------------------------------------------------------------------------------------------------------------------------
Net Interest Revenue                                       238,432                                    220,127
Provision for credit losses                                  7,195                                      4,015
Other operating revenue                                    180,317                                    172,747
Other operating expense                                    239,506                                    228,169
-------------------------------------------------------------------------------------------------------------------------------
Income Before Taxes                                        172,048                                    160,690
Federal and state income tax                                62,316                                     58,170
-------------------------------------------------------------------------------------------------------------------------------
Net Income                                               $ 109,732                                  $ 102,520
-------------------------------------------------------------------------------------------------------------------------------
Earnings Per Average Common Share Equivalent:
  Net Income:
    Basic                                                $    1.64                                  $    1.66
-------------------------------------------------------------------------------------------------------------------------------
    Diluted                                              $    1.63                                  $    1.53
-------------------------------------------------------------------------------------------------------------------------------


(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.
(3)  Yield calculations exclude security trades that have been recorded on trade
     date with no corresponding interest income.

 40


------------------------------------------------------------------------------------------------------------------------------
Quarterly Financial Summary - Unaudited
Consolidated Daily Average Balances, Average Yields and Rates
(Dollars in Thousands, Except Per Share Data)
                                                                           Three Months Ended
                                         -------------------------------------------------------------------------------------
                                                        June 30, 2006                               March 31, 2006
                                         ------------------------------------------      -------------------------------------
                                              Average        Revenue/    Yield /         Average        Revenue/    Yield /
                                              Balance       Expense(1)     Rate          Balance       Expense(1)     Rate
                                         -------------------------------------------------------------------------------------
Assets
                                                                                                    
  Taxable securities (3)                  $   4,783,280   $    56,632       4.75%    $   4,862,313   $    55,046       4.60%
  Tax-exempt securities (3)                     273,305         3,485       5.12           262,124         3,465       5.36
------------------------------------------------------------------------------------------------------------------------------
    Total securities (3)                      5,056,585        60,117       4.77         5,124,437        58,511       4.64
------------------------------------------------------------------------------------------------------------------------------
  Trading securities                             23,672           287       4.86            16,722           209       5.07
  Funds sold and resell agreements               32,048           407       5.09            21,181           239       4.58
  Loans (2)                                   9,472,309       181,269       7.68         9,164,706       166,148       7.35
    Less reserve for loan losses                106,048             -         -            105,135             -         -
------------------------------------------------------------------------------------------------------------------------------
  Loans, net of reserve                       9,366,261       181,269       7.76         9,059,571       166,148       7.44
------------------------------------------------------------------------------------------------------------------------------
    Total earning assets (3)                 14,478,566       242,080       6.71        14,221,911       225,107       6.42
------------------------------------------------------------------------------------------------------------------------------
  Cash and other assets                       2,085,724                                  2,048,328
------------------------------------------------------------------------------------------------------------------------------
        Total assets                      $  16,564,290                              $  16,270,239
------------------------------------------------------------------------------------------------------------------------------

Liabilities And Shareholders' Equity
  Transaction deposits                    $   5,353,413   $    34,875       2.61%    $   5,327,004   $    31,129       2.37%
  Savings deposits                              153,200           353       0.92           155,554           330       0.86
  Time deposits                               4,220,204        44,798       4.26         4,162,952        41,395       4.03
------------------------------------------------------------------------------------------------------------------------------
     Total interest-bearing deposits          9,726,817        80,026       3.30         9,645,510        72,854       3.06
------------------------------------------------------------------------------------------------------------------------------
  Funds purchased and repurchase
    agreements                                2,118,211        25,696       4.87         1,731,983        18,483       4.33
  Other borrowings                              684,431         8,682       5.09           882,878        10,007       4.60
  Subordinated debentures                       292,474         4,930       6.76           295,792         4,915       6.74
------------------------------------------------------------------------------------------------------------------------------
     Total interest-bearing liabilities      12,821,933       119,334       3.73        12,556,163       106,259       3.43
------------------------------------------------------------------------------------------------------------------------------
  Demand deposits                             1,474,835                                  1,485,398
  Other liabilities                             695,418                                    680,897
  Shareholders' equity                        1,572,104                                  1,547,781
------------------------------------------------------------------------------------------------------------------------------
Total liabilities and shareholders' equity$  16,564,290                              $  16,270,239
------------------------------------------------------------------------------------------------------------------------------
  Tax-Equivalent Net Interest Revenue (3)                $    122,746       2.98%                    $   118,848       2.99%
  Tax-Equivalent Net Interest  Revenue
     To Earning Assets (3)                                                  3.40                                       3.39
   Less tax-equivalent adjustment (1)                           1,640                                      1,522
------------------------------------------------------------------------------------------------------------------------------
Net Interest Revenue                                          121,106                                    117,326
Provision for credit losses                                     3,795                                      3,400
Other operating revenue                                        90,880                                     89,437
Other operating expense                                       122,127                                    117,379
------------------------------------------------------------------------------------------------------------------------------
Income before taxes                                            86,064                                     85,984
Federal and state income tax                                   31,080                                     31,236
------------------------------------------------------------------------------------------------------------------------------
Net Income                                                $    54,984                                $    54,748
------------------------------------------------------------------------------------------------------------------------------
Earnings Per Average Common Share Equivalent:
  Net income:
    Basic                                                 $      0.82                                $      0.82
------------------------------------------------------------------------------------------------------------------------------
    Diluted                                               $      0.82                                $      0.81
------------------------------------------------------------------------------------------------------------------------------


(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.
(3)  Yield calculations exclude security trades that have been recorded on trade
     date with no corresponding interest income.

 41


-------------------------------------------------------------------------------------------------------------------------



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

                                                                                           
  $   4,816,263  $    53,375       4.44%  $   4,800,698   $    51,946       4.28% $   4,831,186  $    51,275       4.32%
        243,521        3,046       5.05         231,097         2,888       4.96        215,360        2,810       5.23
-------------------------------------------------------------------------------------------------------------------------
      5,059,784       56,421       4.47       5,031,795        54,834       4.31      5,046,546       54,085       4.36
-------------------------------------------------------------------------------------------------------------------------
         20,595          243       4.68          14,560           171       4.66         11,639          165       5.69
         57,656          581       4.00          44,882           386       3.41         21,170          156       2.96
      9,005,546      158,387       6.98       8,635,732       144,954       6.66      8,341,490      133,173       6.40
        108,998            -         -          109,840             -         -         111,056            -         -
-------------------------------------------------------------------------------------------------------------------------
      8,896,548      158,387       7.06       8,525,892       144,954       6.75      8,230,434      133,173       6.49
-------------------------------------------------------------------------------------------------------------------------
     14,034,583      215,632       6.12      13,617,129       200,345       5.83     13,309,789      187,579       5.68
-------------------------------------------------------------------------------------------------------------------------
      2,168,128                               1,970,746                               1,750,686
-------------------------------------------------------------------------------------------------------------------------
  $  16,202,711                           $  15,587,875                           $  15,060,475
-------------------------------------------------------------------------------------------------------------------------


  $   4,821,627  $    24,075       1.98%  $   4,533,912   $    18,968       1.66% $   4,323,513  $    16,049       1.49%
        154,316          292       0.75         157,772           280       0.70        166,426          285       0.69
      4,216,625       40,083       3.77       3,958,948        35,255       3.53      3,710,338       31,499       3.41
-------------------------------------------------------------------------------------------------------------------------
      9,192,568       64,450       2.78       8,650,632        54,503       2.50      8,200,277       47,833       2.34
-------------------------------------------------------------------------------------------------------------------------

      1,812,752       17,914       3.92       2,067,432        17,738       3.40      2,160,031       15,764       2.93
      1,049,635       10,807       4.08       1,047,423         9,510       3.60        914,968        7,224       3.17
        296,021        4,683       6.28         297,284         4,477       5.97        200,038        2,980       5.98
-------------------------------------------------------------------------------------------------------------------------
     12,350,976       97,854       3.14      12,062,771        86,228       2.84     11,475,314       73,801       2.58
-------------------------------------------------------------------------------------------------------------------------
      1,530,504                               1,424,102                               1,586,248
        814,192                                 613,667                                 558,655
      1,507,039                               1,487,335                               1,440,258
-------------------------------------------------------------------------------------------------------------------------
  $  16,202,711                           $  15,587,875                           $  15,060,475
-------------------------------------------------------------------------------------------------------------------------
                 $    117,778      2.98%                  $    114,117      2.99%                $    113,778      3.10%
                                                                                      3.05

                                   3.34                                     3.32                                   3.45
                       1,392                                    1,289                                  1,245
-------------------------------------------------------------------------------------------------------------------------
                     116,386                                  112,828                                112,533
                       4,450                                    3,976                                  2,015
                      87,344                                   86,855                                 94,591
                     123,903                                  117,034                                126,010
-------------------------------------------------------------------------------------------------------------------------
                      75,377                                   78,673                                 79,099
                      27,219                                   27,846                                 28,634
-------------------------------------------------------------------------------------------------------------------------
                 $    48,158                              $    50,827                            $    50,465
-------------------------------------------------------------------------------------------------------------------------


                 $      0.72                              $      0.77                            $      0.79
-------------------------------------------------------------------------------------------------------------------------
                 $      0.72                              $      0.76                            $      0.75
-------------------------------------------------------------------------------------------------------------------------


 42

PART II. Other Information

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds


The following table provides information with respect to purchases made by or on
behalf  of the  Company  or any  "affiliated  purchaser"  (as  defined  in  Rule
10b-18(a)(3) under the Securities Exchange Act of 1934), of the Company's common
stock during the three months ended June 30, 2006.


------------------------ ---------------- ---------------- ------------------------------------ -----------------------------
                          Total Number     Average Price    Total Number of Shares Purchased      Maximum Number of Shares
                            of Shares     Paid per Share      as Part of Publicly Announced      that May Yet Be Purchased
        Period            Purchased (2)                           Plans or Programs (1)               Under the Plans
------------------------ ---------------- ---------------- ------------------------------------ -----------------------------
                                                                                              
April 1, 2006 to                8,895           $48.46                   6,604                            1,901,988
April 30, 2006
------------------------ ---------------- ---------------- ------------------------------------ -----------------------------
May 1, 2006 to                 61,686           $48.95                  58,191                            1,843,797
May 31, 2006
------------------------ ---------------- ---------------- ------------------------------------ -----------------------------
June 1, 2006 to                50,090           $48.07                  43,527                            1,800,270
June 30, 2006
------------------------ ---------------- ---------------- ------------------------------------ -----------------------------
Total                         120,671                                   108,322
------------------------ ---------------- ---------------- ------------------------------------ -----------------------------


(1)  The Company had a stock  repurchase  plan that was initially  authorized by
     the  Company's  board of  directors on February 24, 1998 and amended on May
     25, 1999.  Under the terms of that plan, the Company could repurchase up to
     800,000  shares of its common stock.  As of March 31, 2005, the Company had
     repurchased  638,642  shares  under  that  plan.  On April  26,  2005,  the
     Company's board of directors  terminated this authorization and replaced it
     with a new stock  repurchase plan  authorizing the Company to repurchase up
     to two million shares of the Company's  common stock.  As of June 30, 2006,
     the Company had repurchased 199,730 shares under the new plan.

(2)  The Company routinely repurchases mature shares from employees to cover the
     exercise  price  and  taxes  in  connection   with  employee  stock  option
     exercises.

 43

Item 4. Submission of Matters to a Vote of Security Holders

Our  Annual  Meeting of  Shareholders  was held on April 25,  2006 (the  "Annual
Meeting"). At the Annual Meeting,  shareholders voted on two matters: (i) to fix
the number of  directors  to be elected at nineteen  (18) and to elect  eighteen
(18) persons as directors for a term of one year or until their  successors have
been elected and  qualified,  and (ii) to amend the BOKF 2003 Stock Option Plan.
The shareholders approved these matters by the following votes, respectively:

(i) Election of eighteen (18) directors for a term of one year:

                                                        Votes
                                                      Withheld/
                                    Votes For          Against
                                 ----------------- -----------------


Gregory S. Allen                    64,199,569          102,587
C. Fred Ball, Jr.                   61,078,269        3,223,887
Sharon J. Bell                      63,888,560          413,596
Peter C. Boylan III                 64,188,718          113,438
Chester Cadieux III                 60,263,729        4,038,427
Paula Marshall-Chapman              59,540,599        4,761,557
William E. Durrett                  63,907,437          394,719
Robert G. Greer                     61,079,534        3,222,622
David F. Griffin                    64,199,969          102,187
V. Burns Hargis                     61,080,025        3,222,131
E. Carey Joullian IV                60,096,178        4,205,978
George B. Kaiser                    61,528,070        2,774,086
Judith Z. Kishner                   64,193,314          108,842
Thomas L. Kivisto                   64,199,769          102,387
David L. Kyle                       63,742,235          559,921
Robert J. LaFortune                 63,907,325          394,831
Stanley A. Lybarger                 61,080,035        3,222,121
Steven J. Malcolm                   63,800,107          502,049


                                                                            Votes
                                                                          Withheld/        Exceptions /
                                                        Votes For          Against           Abstain
                                                     ----------------- ----------------- -----------------

                                                                                     
(ii) Amendment of the BOKF 2003 Stock Option Plan      56,641,364        1,004,674            873,268


Item 6. Exhibits

31.1 Certification  of Chief  Executive  Officer  Pursuant to Section 302 of the
     Sarbanes-Oxley Act of 2002

31.2 Certification  of Chief  Financial  Officer  Pursuant to Section 302 of the
     Sarbanes-Oxley Act of 2002

32   Certification  of Chief  Executive  Officer  and  Chief  Financial  Officer
     Pursuant to 18 U.S.C.  Section 1350, as Adopted  Pursuant to Section 906 of
     the Sarbanes-Oxley Act of 2002


Items 1, 3 and 5 are not applicable and have been omitted.

 44

                                   Signatures

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.


                                         BOK FINANCIAL CORPORATION
                                         (Registrant)

Date:         August 9, 2006             /s/ Steven E. Nell
        ------------------------         ----------------------------------
                                         Steven E. Nell
                                         Executive Vice President and
                                         Chief Financial Officer

                                         /s/ John C. Morrow
                                         -----------------------------------
                                         John C. Morrow
                                         Senior Vice President and Director
                                         of Financial Accounting & Reporting

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