FINANCIAL STATEMENTS AND SUPPLEMENTAL SCHEDULE
BOK Financial Thrift Plan for Salaried Employees
As of December 31, 2005 and 2004, and for the Year Ended December 31, 2005



                BOK Financial Thrift Plan for Salaried Employees

                              Financial Statements
                            and Supplemental Schedule


                        As of December 31, 2005 and 2004,
                    and for the Year Ended December 31, 2005




                                    Contents

Report of Independent Registered Public Accounting Firm..............1

Audited Financial Statements

Statements of Net Assets Available for Benefits......................2
Statement of Changes in Net Assets Available for Benefits............3
Notes to Financial Statements........................................4


Supplemental Schedule

Schedule H; Line 4i--Schedule of Assets (Held at End of Year)........11


 1


             Report of Independent Registered Public Accounting Firm

The Plan Administrative Committee
BOK Financial Thrift Plan for Salaried Employees

We have audited the accompanying statements of net assets available for benefits
of the BOK Financial Thrift Plan for Salaried  Employees as of December 31, 2005
and 2004,  and the  related  statement  of changes in net assets  available  for
benefits for the year ended December 31, 2005.  These  financial  statements are
the responsibility of the Plan's management. Our responsibility is to express an
opinion on these financial statements based on our audits.

We conducted our audits in accordance  with the standards of the Public  Company
Accounting Oversight Board (United States). Those standards require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement.  We were not engaged to perform an
audit of the  Plan's  internal  control  over  financial  reporting.  Our  audit
included  consideration of internal control over financial  reporting as a basis
for designing audit  procedures that are appropriate in the  circumstances,  but
not for the purpose of expressing an opinion on the  effectiveness of the Plan's
internal  control  over  financial  reporting.  Accordingly,  we express no such
opinion. An audit also includes examining,  on a test basis, evidence supporting
the  amounts  and  disclosures  in  the  financial  statements,   assessing  the
accounting  principles  used and significant  estimates made by management,  and
evaluating the overall  financial  statement  presentation.  We believe that our
audits provide a reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all  material  respects,  the net assets  available  for benefits of the Plan at
December  31,  2005 and 2004,  and the changes in its net assets  available  for
benefits for the year ended December 31, 2005, in conformity with U.S. generally
accepted accounting principles.

Our audits were performed for the purpose of forming an opinion on the financial
statements taken as a whole. The  accompanying  supplemental  schedule of assets
(held at end of year) as of December  31,  2005,  is  presented  for purposes of
additional  analysis and is not a required part of the financial  statements but
is  supplementary  information  required by the  Department of Labor's Rules and
Regulations for Reporting and Disclosure  under the Employee  Retirement  Income
Security Act of 1974. This  supplemental  schedule is the  responsibility of the
Plan's management.  The supplemental schedule has been subjected to the auditing
procedures  applied  in our  audits  of the  financial  statements  and,  in our
opinion,  is fairly stated in all material respects in relation to the financial
statements taken as a whole.

/s/ Ernst & Young LLP


Tulsa, Oklahoma
June 29, 2006

 2

                BOK Financial Thrift Plan for Salaried Employees

                 Statements of Net Assets Available for Benefits


                                                                                December 31
                                                                          2005                2004
                                                                  -----------------------------------------
 Assets
 Investments:
                                                                                   
    BOKF Common Stock                                               $     22,551,206     $     22,556,065
    American Performance Funds:
      Growth Equity Fund                                                           -            3,073,008
      Cash Management Fund                                                 5,547,193            5,667,853
      Intermediate Bond Fund                                               6,999,242            7,581,527
    SEI Stable Asset Fund                                                 10,601,453           10,292,400
    American Advantage International Equity Fund                                   -            5,085,328
    American Balanced Fund                                                 3,975,819            3,575,620
    Neuberger and Berman Genesis Trust Fund                               22,626,711           19,232,148
    Dodge and Cox Stock Fund                                              22,013,241           20,247,815
    Vanguard Institutional Index                                          18,770,373           20,492,655
    Goldman Sachs Growth Fund                                                322,749              116,173
    American Growth Fund                                                   5,608,011              623,682
    Hotchkis and Wiley Midcap Value Fund                                   2,748,496            1,159,735
    T Rowe Price New Horizons                                                769,431              189,464
    American Beacon International Fund                                     5,956,149                    -
    Self-directed common stocks                                              602,999              495,208
    Self-directed registered investment companies                            710,954              546,489
    Self-directed bonds                                                       15,118                    -
    Bank of Oklahoma, N.A. Managed Allocation Portfolios (MAP):
        MAP Conservative Fund                                                309,197                    -
        MAP Balanced Fund                                                  1,213,603                    -
        MAP Moderate Growth Fund                                           1,935,984                    -
        MAP Growth Fund                                                    2,522,252                    -
        MAP Aggressive Growth Fund                                         1,035,640                    -
    Participant loans                                                      4,410,900            3,732,706
                                                                  -----------------------------------------
  Total investments                                                      141,246,721          124,667,876

 Cash                                                                        656,022              599,194
 Accrued interest receivable                                                  93,898              240,902
 Due from broker                                                               5,307              211,229
                                                                  -----------------------------------------
 Total assets                                                            142,001,948          125,719,201

 Liabilities
 Due to broker                                                               628,042              728,626
 Excess contributions payable                                                  3,731                    -
                                                                  -----------------------------------------
 Total liabilities                                                           631,773              728,626
                                                                  -----------------------------------------
 Net assets available for benefits                                  $    141,370,175     $    124,990,575
                                                                  =========================================


See accompanying notes.

 3

                BOK Financial Thrift Plan for Salaried Employees

            Statement of Changes in Net Assets Available for Benefits

                          Year ended December 31, 2005


 Additions
 Investment income:
    Interest and dividends                                 $      2,156,379
    Net appreciation in fair value of investments                 5,194,309
                                                         ----------------------
                                                                  7,350,688

 Contributions:
    Participants                                                 11,038,246
    Employer                                                      3,728,204
    Rollovers                                                     2,357,011
                                                         ----------------------
                                                                 17,123,461
                                                         ----------------------

 Total additions                                                 24,474,149

 Deductions
 Benefit payments                                                 7,951,665
 Administrative expenses                                              7,086
 Net transfers out of the Plan                                      135,798
                                                         ----------------------
                                                                  8,094,549
                                                         ----------------------

 Net increase                                                    16,379,600
 Net assets available for benefits, at beginning of year        124,990,575
                                                         ----------------------
 Net assets available for benefits, at end of year         $    141,370,175
                                                         ======================


See accompanying notes.

 4

                BOK Financial Thrift Plan for Salaried Employees

                          Notes to Financial Statements

                                December 31, 2005


1. Description of Plan

The  following  description  of the  BOK  Financial  Thrift  Plan  for  Salaried
Employees  (the Plan)  provides only general  information.  Participants  should
refer to the Summary Plan  Description  or the Plan document for a more complete
description of the Plan's provisions.

General

The Plan is a defined  contribution plan covering all salaried  employees of BOK
Financial Corporation (BOKF) and its subsidiaries and affiliates  (collectively,
the  Employer or Company)  who have  attained  age 21 and who have  completed at
least one year of service (equivalent to 1,000 hours).  Effective April 1, 2003,
an eligible  employee may enter the plan on the first day of the month following
the date the employee is credited with one full month of service.  Additionally,
as of April 1, 2003, all new eligible  employees are  automatically  enrolled in
the Plan at a three percent  contribution rate unless the employee designates on
the enrollment  form not to  participate or to participate at another  allowable
contribution  rate.  The  Plan is  subject  to the  provisions  of the  Employee
Retirement Income Security Act of 1974, as amended (ERISA).

Contributions

Participants  may elect to contribute a percentage of their  compensation  up to
the  maximum  allowable  by  federal  regulation  (as  defined by the Plan) on a
pre-tax  basis  pursuant  to a salary  reduction  agreement  filed with the Plan
administrator.  In addition, participants may make after-tax contributions which
shall not  exceed 5 percent of each  participant's  compensation,  however,  the
combination  of  pre-tax  and  after-tax  contributions  cannot be more than the
annual legal limit on the total amount that may be  contributed  to this type of
plan (as defined by the plan). For participants who attained age 50 on or before
December 31, 2005,  such  participants  were allowed to make a pre-tax  catch-up
contribution  of an  additional  $4,000  above the maximum  allowable by federal
regulation.  Participants  may elect  investment in any of 12 mutual funds,  the
Bank of Oklahoma, N.A. Managed Allocation Portfolios (MAP), self-directed common
stocks, bonds, or registered investment companies, and BOKF Common Stock. During
2005,  the Employer  authorized  the following  modifications  to the investment
selections  available to participants:  (a) removal of the American  Performance
Growth Equity Fund and (b) addition of the American Beacon International and MAP
Funds.

 5

                BOK Financial Thrift Plan for Salaried Employees

                    Notes to Financial Statements (continued)


1. Description of Plan (continued)

The  Employer  contributes  a matching  contribution  to the plan.  The matching
contribution may be made in cash or in shares of BOKF Common Stock. In 2005, the
entire matching contribution of $3,728,204 was made in cash.

For 2005, the Employer matching  contribution ranged from $.40 to $1.00 for each
dollar of the participant's  contributions,  up to five percent of compensation,
based on each participant's years of service as follows:

                   Years of Service                    Matching Percentage
------------------------------------------------ ------------------------------

Less than four years                                          40%
At least four, but less than ten years                        60%
At least ten, but less than fifteen years                     80%
Fifteen or more years                                        100%

The  Employer  may, at its sole  discretion,  make an  additional  discretionary
contribution to the Plan. There was no discretionary contribution in 2005.

Participant Accounts

Each participant's  account is credited with the participant's  contribution and
allocations of (a) the Employer's contribution and (b) Plan earnings and charged
with  administrative   expenses,   if  applicable.   Allocations  are  based  on
participant earnings or account balances, as defined by the Plan. The benefit to
which a  participant  is entitled is the benefit  that can be provided  from the
participant's vested account.

Vesting

Participants  vest in  Employer  matching  contributions  based  upon  years  of
service,  as defined  by the Plan.  Participants  are 100  percent  vested  upon
completion of five years of service and are immediately vested in their deferred
(pre-tax)  contributions,  after-tax  contributions,  and  the  actual  earnings
thereon.

 6

                BOK Financial Thrift Plan for Salaried Employees

                    Notes to Financial Statements (continued)


1. Description of Plan (continued)

Loans

Participants  may  borrow  against  their  accounts  in amounts of not less than
$1,000  and  not  to  exceed  the  lesser  of  $50,000  or  50  percent  of  the
participant's  vested  account  balance.  Loans will bear interest  based on the
current  banking  prime  rate when the loan is  requested  and may not  exceed a
five-year term, unless the proceeds are used to acquire the primary residence of
the  participant,  in which case the maximum term may be 25 years. The loans are
secured by the balances in the participant's  account.  Interest rates are based
on the Chase prime rate and range from 4.00 percent to 13.00 percent at December
31, 2005. Repayment is made by payroll withholdings.

Payment of Benefits

A participant who terminated  employment with a vested account balance less than
$1,000 ($5,000 prior to March 28, 2005), excluding rollover contributions,  will
receive a  lump-sum  payment.  If the  participant  has a vested  balance  which
exceeds   $1,000   ($5,000  prior  to  March  28,  2005),   excluding   rollover
contributions,  and has not elected payment to another eligible  retirement plan
in a direct  rollover  or to  receive  payment  directly,  the Plan will pay the
distribution in a direct rollover to an individual retirement account designated
by the Plan  Administrator.  In lieu of  lump-sum  payment,  a  participant  who
terminates  employment  after his or her 65th  birthday or attaining  age 50 and
completing ten years of service, shall be entitled to elect monthly,  quarterly,
semiannual,  or annual  installment  payments  to be paid  over a period  not to
exceed 10 years from the benefit  commencement  date.  The  installments  may be
accelerated at the direction of the participant.

Forfeitures

Forfeited balances of terminated  participants'  nonvested accounts are utilized
to pay administrative costs or to reduce future Employer  contributions.  During
2005,   forfeitures   of  $61,000   were  used  to  reduce   Employer   matching
contributions.   Additionally,   at  December  31,  2005  and  2004  forfeitures
outstanding that will be used to reduce future Employer  matching  contributions
were $24,085 and $39,153, respectively.

 7

                BOK Financial Thrift Plan for Salaried Employees

                    Notes to Financial Statements (continued)

1. Description of Plan (continued)

Plan Termination

The Employer expects to continue the Plan  indefinitely.  However,  the Employer
reserves the right to discontinue  the Plan or to amend the Plan, in whole or in
part, from  time-to-time.  In the event of Plan  termination,  participants will
become 100 percent vested in their accounts.

2. Summary of Significant Accounting Policies

Basis of Accounting

The  financial  statements  of the Plan are  prepared  on the  accrual  basis of
accounting. Benefit payments are recorded when paid.

Administrative Expenses

The Employer pays all  administrative  expenses except for loan origination fees
and fees  related  to  self-directed  common  stocks and  registered  investment
companies, which are paid by the participants.

Investment Valuation and Income Recognition

Shares of  registered  investment  companies  are valued at fair value  based on
published  market prices,  which represent the net asset value of shares held by
the Plan at year-end.  The BOKF Common Stock,  other common stocks and bonds are
valued at the quoted market price. The MAP fund values are obtained from the MAP
annual audited financial statements. The MAP funds are reported at market value.
Participant  loans receivable are valued at their  outstanding  balances,  which
approximates fair value.

Purchases and sales of securities are recorded on a trade-date  basis.  Dividend
income is recorded on the ex-dividend  date.  Interest income is recorded on the
accrual basis.

Use of Estimates

The  preparation  of financial  statements  in  conformity  with U.S.  generally
accepted accounting principles requires management to make estimates that affect
the amounts reported in the financial  statements and accompanying notes. Actual
results could differ from those estimates.

 8

                BOK Financial Thrift Plan for Salaried Employees

                    Notes to Financial Statements (continued)


2. Summary of Significant Accounting Policies (continued)

Excess Contributions Payable

In order to be in compliance with the nondiscrimination rules under the Internal
Revenue Code (the Code), the Plan is required to return excess  contributions to
certain highly compensated employees. As of December 31, 2005, the Plan recorded
a liability in the amount of $3,731.  The amounts  payable to participants as of
December  31, 2005 will be refunded by  December  31,  2006,  as required by the
Code.

3. Investments

The Plan's  investments  are held by a  bank-administered  trust fund at Bank of
Oklahoma, N.A. Trust Division (the Trustee). During 2005, the Plan's investments
(including  investments  purchased  and sold,  as well as held  during the year)
appreciated  (depreciated)  in fair value as  determined by quoted market prices
for BOKF  Common  Stock and  common  stocks  and  published  market  prices  for
registered investment companies as follows:

                                                          Net Appreciation
                                                           (Depreciation)
                                                           in Fair Value
                                                           of Investments
                                                        -----------------------

        BOKF Common Stock                                $     (1,256,845)
        Registered investment companies                         6,088,804
        Self-directed common stocks                              (103,056)
        Self-directed registered investment companies              49,099
        Self-directed bonds                                        (5,082)
        Collective investment trusts                              421,389
                                                       -----------------------
                                                         $      5,194,309
                                                       =======================

The fair values of all individual  investments,  including  those that represent
five percent or more of the Plan's net assets, are separately  identified in the
statements of net assets available for benefits.

 9


                BOK Financial Thrift Plan for Salaried Employees

                    Notes to Financial Statements (continued)

4. Income Tax Status

The Plan has received a determination  letter from the Internal  Revenue Service
(IRS) dated April 1, 2002,  stating  that the Plan is  qualified  under  Section
401(a)  of the the  Code  and,  therefore,  the  related  trust is  exempt  from
taxation.  Subsequent to  determination  by the IRS, the Plan was amended.  Once
qualified,  the Plan is  required  to  operate  in  conformity  with the Code to
maintain its qualification.  The Plan  administrator  believes the Plan is being
operated  in  compliance  with the  applicable  requirements  of the  Code  and,
therefore,  believes  that the Plan,  as amended,  is qualified  and the related
trust is tax-exempt.

5. Reconciliation of Financial Statements to the Form 5500

The  following  reconciles  net assets  available for benefits per the financial
statements to the Form 5500:


                                                                           December 31
                                                                    2005                 2004
                                                            --------------------- --------------------
        Net assets available for benefits per the
                                                                             
           financial statements                              $    141,370,175      $    124,990,575
        Less: Benefits payable                                       (120,416)             (497,611)
                                                            --------------------- --------------------
        Net assets available for benefits per the Form
          5500                                               $    141,249,759      $    124,492,964
                                                            ===================== ====================


                                                                 Year ended
                                                                December 31,
                                                                    2005
                                                            -------------------

        Benefit payments per the financial statements        $      7,951,665
        Add: benefits payable at end of year                          120,416
        Less: benefits payable at beginning of year                  (497,611)
                                                            -------------------
        Benefit payments to participants per the Form 5500   $      7,574,470
                                                            ===================

Amounts  allocated to withdrawn  participants  are recorded on the Form 5500 for
benefit  payments  that have been  processed  and approved for payment  prior to
year-end, but not yet paid.

 10

                BOK Financial Thrift Plan for Salaried Employees

                    Notes to Financial Statements (continued)

6. Risks and Uncertainties

The Plan invests in various  investment  securities.  Investment  securities are
exposed to various risks such as interest rate,  market and credit risks. Due to
the level of risk associated with certain investment securities,  it is at least
reasonably  possible  that changes in the values of investment  securities  will
occur  in  the  near  term  and  that  such  changes  could  materially   affect
participants' account balances and the amounts reported in the statements of net
assets available for benefits.

7. Related Parties

BOK Investment  Advisors,  Inc.  (BOKIA),  a wholly owned  subsidiary of Bank of
Oklahoma, N.A. (BOk), serves as investment advisor to American Performance Funds
(AP  Funds).  AP  Funds  is  a  diversified,   open-ended,   investment  company
established  in 1987 as a business  trust under the  Investment Act of 1940. BOk
serves as custodian for AP Funds. Effective July 1, 2004, BOKIA began serving as
the AP Funds  administrator.  BOK  Financial  offers  the AP Funds  products  to
customers  and  employees,  in the  ordinary  course of  business,  through  its
brokerage and trading,  employee benefit plan and trust services,  as well as to
the public. Additionally, a portion of the Plan's assets are invested in Company
stock.  Since the Company is the Plan  Sponsor,  investments  involving  Company
stock qualify as party-in-interest  transactions.  All of these transactions are
exempt from prohibited transaction rules.

Effective  January 1, 2005, the Plan was authorized to include Bank of Oklahoma,
N.A. Managed  Allocation  Portfolio (MAP) Funds as investment  options.  The MAP
Funds include five  different  managed  funds  designed to meet  different  risk
tolerances  and years to  retirement.  The portfolios are comprised of different
asset  classes,  capitalizations  and  investment  styles.  BOKIA also serves as
investment advisor to the MAP Funds.

8. Subsequent Event

Effective April 1, 2006, the Company matching  contribution  changed as a result
of  modifications  to both the  Plan and the BOK  Financial  Pension  Plan.  The
Company will begin matching participant contributions up to 6% of the employee's
compensation. Additionally, the Employer match will range from $.50 to $2.00 for
each dollar of the participant's  contribution based on the participant's  years
of  service.  Matching  contributions  for the 2006 plan year are  limited  to a
certain   dollar  amount   (ranging  from  $6,050  to  $22,550)   based  on  the
participant's year of service. The Company will also make a special contribution
for participants making less than $40,000. This special contribution is $750 for
participants  making less than  $30,000 and phases out for  participants  making
$30,000 to  $40,000.  In  addition  to the  contribution  changes,  the limit on
after-tax contributions will change to 6% of the participant's compensation.




                              Supplemental Schedule


 11


                BOK Financial Thrift Plan for Salaried Employees

                           EIN: 73-0780382 Plan #: 002

          Schedule H; Line 4i--Schedule of Assets (Held at End of Year)

                                December 31, 2005



                                                                  (c)
                          (b)                          Description of Investments,               (e)
                  Identity of Issue,                  Including Maturity Date, Rate            Current
 (a)      Borrower, Lessor, or Similar Party          of Interest, or Maturity Value            Value
 -------------------------------------------------------------------------------------------------------------

                                                                                       
  *  BOK Financial Corporation                    BOKF Common Stock                       $      22,551,206

  *  American Performance Funds                   Cash Management Fund                            5,547,193
                                                  Intermediate Bond Fund                          6,999,242

     SEI Funds                                    Stable Asset Fund                              10,601,453

     American                                     Balanced Fund                                   3,975,819

     Neuberger and Berman                         Genesis Trust Fund                             22,626,711

     Dodge and Cox                                Stock Fund                                     22,013,241

     Vanguard                                     Institutional Index                            18,770,373

     Goldman Sachs Growth Fund                    Stock Fund                                        322,749

     American Growth Fund                         Stock Fund                                      5,608,011

     Hotchkis and Wiley Midcap Value Fund         Stock Fund                                      2,748,496

     T Rowe Price New Horizons                    Stock Fund                                        769,431

     American Beacon                              International Fund                              5,956,149

  *  Bank of Oklahoma, N.A. Managed Allocation
        Portfolio (MAP)                           MAP Conservative Fund                             309,197
                                                  MAP Balanced Fund                               1,213,603
                                                  MAP Moderate Growth Fund                        1,935,984
                                                  MAP Growth Fund                                 2,522,252
                                                  MAP Aggressive Growth Fund                      1,035,640

     Self-directed common stocks, bonds and       Common stocks and registered
     registered investment companies              investment companies                            1,329,071

  *  Participant loans                            Interest rates ranging from 4.00
                                                     percent to 13.00 percent                     4,410,900
                                                                                        ----------------------
                                                                                          $     141,246,721
                                                                                        ======================



*Indicates Party-in-interest to the Plan.
Column (d) is not applicable as all investments are participant directed.