BOK FINANCIAL THRIFT PLAN FOR SALARIED EMPLOYEES

                            FINANCIAL STATEMENTS AND
                              SUPPLEMENTAL SCHEDULE

                           DECEMBER 31, 2007 and 2006

                                      WITH

                        REPORTS OF INDEPENDENT REGISTERED
                             PUBLIC ACCOUNTING FIRMS




                                    CONTENTS


Report of Independent Registered Public Accounting Firm -
    Tullius Taylor Sartain & Sartain LLP................................1

Report of Independent Registered Public Accounting Firm -
    Ernst & Young LLP...................................................2

Statements of Net Assets Available for Benefits
    December 31, 2007 and 2006..........................................3

Statement of Changes in Net Assets Available for Benefits
    Year ended December 31, 2007........................................4

Notes to Financial Statements...........................................5

Supplemental Schedule

    Form 5500 Schedule H, Line 4i - Schedule of Assets
        (Held at End of Year)  December 31, 2007.......................12

 1

             REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To Plan Administrative Committee
BOK Financial Thrift Plan for Salaried Employees

We have audited the accompanying  statement of net assets available for benefits
of BOK Financial  Thrift Plan for Salaried  Employees  (the Plan) as of December
31,  2007,  and the related  statement  of changes in net assets  available  for
benefits.  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 audit.

We conducted our audit in accordance  with the auditing  standards of the Public
Company Accounting Oversight Board (United States). Those standards require that
we plan and perform the audit to obtain  reasonable  assurance about whether the
financial  statements  are free of  material  misstatement.  An  audit  includes
examining,  on a test basis,  evidence supporting the amounts and disclosures in
the  financial  statements.  An audit also  includes  assessing  the  accounting
principles  used  and  significant  estimates  made  by  management,  as well as
evaluating the overall  financial  statement  presentation.  We believe that our
audit provides 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 as of
December 31, 2007,  and the changes in net assets  available  for  benefits,  in
conformity with accounting principles generally accepted in the United States of
America.

Our audit  was made for the  purpose  of  forming an opinion on the  financial
statements taken as a whole. The supplemental Schedule of Assets (Held at End of
Year) as of December  31,  2007,  is  presented  for the  purpose of  additional
analysis and is not a required part of the basic  financial  statements,  but is
supplementary  information  required by the United States  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 the audit 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/ TULLIUS TAYLOR SARTAIN & SARTAIN LLP

Tulsa, Oklahoma
June 26, 2008

 2

        Report of Independent Registered Public Accounting Firm

The Plan Administrative Committee
BOK Financial Thrift Plan for Salaried Employees

We have audited the accompanying  statement of net assets available for benefits
of the BOK  Financial  Thrift  Plan  for  Salaried  Employees  (the  Plan) as of
December 31, 2006. This financial  statement is the responsibility of the Plan's
management.  Our  responsibility  is to express  an  opinion  on this  financial
statement based on our audit.

We conducted  our audit in accordance  with the standards of the Public  Company
Accounting Oversight Board (United States). Those standards require that we plan
and perform the audit to obtain reasonable assurance about whether 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 statement, assessing the accounting
principles used and significant estimates made by management, and evaluating the
overall financial statement  presentation.  We believe that our audit provides a
reasonable basis for our opinion.

In our opinion, the financial statement referred to above present fairly, in all
material respects, the net assets available for benefits of the Plan at December
31, 2006, in conformity with U.S. generally accepted accounting principles.


/s/ Ernst & Young LLP

Tulsa, Oklahoma
June 27, 2007

 3

                BOK FINANCIAL THRIFT PLAN FOR SALARIED EMPLOYEES

                 STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS

                           December 31, 2007 and 2006


                                               2007                2006
                                        ---------------------------------------
 Assets
 Investments, at fair value (See Note 3) $    189,950,281    $    172,093,693
 Cash                                             991,473             962,144
 Employer contribution receivable                 952,891             868,500
 Due from broker                                  230,746              28,149
 Accrued interest receivable                      119,306             123,864
                                        ---------------------------------------

 Total assets                                 192,244,697         174,076,350

 Liabilities
 Due to broker                                  1,135,463             925,312
                                        ---------------------------------------

 Net assets available for benefits       $    191,109,234    $    173,151,038
                                        =======================================

                       See notes to financial statements.

 4

                BOK FINANCIAL THRIFT PLAN FOR SALARIED EMPLOYEES

            STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS

                          Year ended December 31, 2007


 Additions to net assets:
     Investment income:
        Interest and dividends                         $      3,260,264
        Net appreciation in fair value of investments         6,600,271
                                                       --------------------

                                                              9,860,535

     Contributions:
        Participants                                         15,321,527
        Employer                                             10,511,422
        Rollovers                                             2,601,586
                                                       --------------------

                                                             28,434,535
                                                       --------------------

 Total additions                                             38,295,070

 Deductions from net assets:
     Benefit payments                                        20,051,147
     Administrative expenses                                      5,717
     Net transfers out of the plan                              280,010
                                                       --------------------

 Total deductions                                            20,336,874
                                                       --------------------

 Net increase                                                17,958,196

 Net assets available for benefits:
     Beginning of year                                      173,151,038
                                                       --------------------

     End of year                                       $    191,109,234
                                                       ====================

                       See notes to financial statements.

 5

                BOK FINANCIAL THRIFT PLAN FOR SALARIED EMPLOYEES

                          NOTES TO FINANCIAL STATEMENTS

Note 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).  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. All new eligible employees are automatically enrolled in the Plan at
a 3% 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).

Bank of Oklahoma N.A. (Plan  Administrator)  holds and manages the assets of the
Plan,  maintains  participant  account records and makes  distributions  to Plan
participants.

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 6% 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).  Participants  may also make Roth 401(k)  contributions to
the Plan not to exceed the annual legal limit.  Participants who attained age 50
on or  before  December  31,  2007,  were  allowed  to make a  pre-tax  catch-up
contribution  of an  additional  $5,000  above the maximum  allowable by federal
regulation.

Participants may elect investment in any of 11 registered  investment companies,
the Bank of  Oklahoma,  N.A.  Managed  Allocation  Portfolios  (MAP),  which are
collective  investment funds, the Bank of Oklahoma,  N.A.  Strategic  Allocation
Fund (SAF) which is a collective  investment fund,  self-directed common stocks,
bonds, or registered investment  companies,  and BOKF Common Stock. During 2007,
the Employer authorized the following modifications to the investment selections
available to participants: (a) removal of the MAP Conservative, Balanced,

 6

Moderate Growth,  Growth and Aggressive Growth funds and (b) addition of the MAP
2010, 2020, 2030, 2040, and 2050 funds.

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 2007, the
entire matching contribution of $9,556,522 was made in cash.

The Employer matching  contribution ranged from $.50 to $2.00 for each dollar of
the  participant's  contributions,  up to  6% of  compensation,  based  on  each
participant's years of service as follows:

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

Less than four years                                          50%
At least four, but less than ten years                       100%
At least ten, but less than fifteen years                    150%
Fifteen or more years                                        200%

Matching  contributions  for the 2007 plan year are limited to a certain  dollar
amount  (ranging  from $6,750 to $27,000)  based on the  participant's  years of
service. The Company also makes a special contribution for eligible participants
making less than  $40,000.  This special  contribution  (Qualified  Non-Elective
Contribution) is $750 for  participants  making less than $30,000 and phases out
for  participants  making $30,000 to $40,000.  The special  contribution for the
2007 plan year was $954,900.

The  Employer  may, at its sole  discretion,  make an  additional  discretionary
contribution to the Plan. There was no discretionary contribution in 2007.

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% vested upon completion of
five years of service and are  immediately  vested in their deferred  (pre-tax),
Roth 401(k) and after-tax contributions, and the actual earnings thereon.

 7

Participant 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% 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.  Repayment is made
by payroll withholdings,  and the maximum number of loans a participant may have
outstanding  at one time is two.  The loans are  secured  by the  balance in the
participant's  account.  Interest  rates are based on the Chase  prime  rate and
range from 4% to 13% at December 31, 2007.

Payment of benefits

A participant,  who terminated  employment with a vested account balance of less
than $1,000, excluding rollover contributions,  will receive a lump-sum payment.
If the  participant's  vested balance  exceeds  $1,000,  but is less than $5,000
(excluding  rollover  contributions),  and the  participant  has not  elected to
receive  payment  directly,  transfer to another  eligible  retirement plan or a
direct  rollover,  the Plan will pay the distribution in a direct rollover to an
individual  retirement  account designated by the Plan  Administrator.  Balances
over $5,000 are not distributed without the participant's  consent. Prior to May
1, 2007, in lieu of lump-sum  payment,  a participant who terminated  employment
after his or her 65th birthday or attaining age 60 and  completing  ten years of
service,  was  entitled  to elect  monthly,  quarterly,  semi-annual,  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. Effective May 1, 2007, only lump-sum payments are allowed.

Forfeitures

At December 31, 2007 and 2006 forfeited  nonvested  accounts totaled $94,723 and
$22,617,  respectively.  These  accounts will be used to reduce future  employer
contributions.  In 2007,  employer  contributions  were  reduced by $20,808 from
forfeited nonvested accounts.

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% vested in their accounts.


Note 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.

 8

Administrative expenses

The Employer pays all  administrative  expenses except for loan origination fees
and fees related to self-directed common stocks, bonds 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.  BOKF Common Stock,  other common stocks and bonds are
valued at the quoted market price.

MAP and SAF fund values are reported at fair values as  determined  and reported
daily by the fund sponsors.  These fair values are based on quoted market prices
of the securities held by the funds.  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.

As described in Financial Accounting  Standards Board Staff Position,  AAG INV-1
and SOP 94-4-1, Reporting of Fully Benefit-Responsive  Investment Contracts Held
by Certain  Investment  Companies Subject to the AICPA Investment  Company Guide
and  Defined-Contribution  Health  and  Welfare  and  Pension  Plans  (the FSP),
investment  contracts  held by a  defined-contribution  plan are  required to be
reported at fair value.  However,  contract  value is the  relevant  measurement
attribute  for that  portion  of the net  assets  available  for  benefits  of a
defined-contribution  plan  attributable to fully  benefit-responsive  contracts
because contract value is the amount  participants would receive if they were to
initiate  permitted  transactions  under the terms of the Plan.  Contract  value
represents   contributions   made,   plus   earnings,   less   withdrawals   and
administrative  expenses.  The Plan's  investments  include the SEI Stable Asset
Fund, a collective  trust that invests in a variety of fully  benefit-responsive
investment contracts.

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.

Reclassifications

Certain  prior year  amounts  have been  reclassified  to conform  with the 2007
presentation.

Effects of recently issued Statements of Financial Accounting Standards

In September  2006, the FASB issued  Statement No. 157, Fair Value  Measurements
(FAS 157).  This  statement  defines  fair value,  establishes  a framework  for
measuring fair value and expands

 9

disclosures about fair value measurements.  FAS 157 is effective for the Plan in
2008.  The  Plan's  financial  statements  will not be  materially  impacted  by
adoption of FAS 157.


Note 3 - Investments

The following  presents  investments that represent 5% or more of the Plan's net
assets:


                                                                      December 31,
                                                        ------------------------------------------
                                                               2007                  2006
                                                        -------------------- ---------------------
                                                                         
BOKF Common Stock                                        $     23,607,005      $     24,683,494
American Performance Cash Management Fund                      11,103,959             7,530,587
SEI Stable Asset Fund                                           8,726,114             9,827,325
Neuberger and Berman Genesis Trust Fund                        27,318,900            23,080,679
Dodge and Cox Stock Fund                                       28,388,284            29,640,539
Vanguard Institutional Index                                   20,815,268            20,663,716
American Growth Fund of America                                 9,714,604             7,294,052
Bank of Oklahoma, N.A. International Strategic
   Allocation Fund                                             12,310,271             9,535,140


The Plan's  investments  are held by a  bank-administered  trust fund at Bank of
Oklahoma, N.A. Trust Division (the Trustee). During 2007, the Plan's investments
(including  investments  purchased  and sold,  as well as held  during the year)
appreciated (depreciated) in fair value as follows:

                                                       Net Appreciation
                                                        (Depreciation)
                                                         in Fair Value
                                                        of Investments
                                                    ------------------------
BOKF Common Stock                                     $     (1,064,819)
Registered investment companies                              6,894,178
Self-directed common stocks                                    (85,521)
Self-directed registered investment companies                   67,550
Self-directed bonds                                             (4,836)
Collective investment trusts                                   793,719
                                                    ------------------------
                                                      $      6,600,271
                                                    ========================

Participants  should refer to the fund prospectus or other  investment  document
for information on a fund's investment risk, objective, fees and expenses.

 10

Note 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 Internal Revenue Code (the Code) and, therefore, the related trust
is exempt  from  taxation.  Subsequent  to this  determination  by the  Internal
Revenue Service, 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.


Note 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,
                                                          ---------------------------------------------
                                                                  2007                   2006
                                                          ---------------------- ----------------------
Net assets available for benefits per the financial
                                                                            
    statements                                             $      191,109,234     $      173,151,038
Less: benefits payable                                                 (2,845)                  (335)
                                                          ---------------------- ----------------------

Net assets available for benefits per the Form 5500        $      191,106,389     $      173,150,703
                                                          ====================== ======================


The  following  is a  reconciliation  of  benefit  payments  per  the  financial
statements to the Form 5500:

                                                              Year Ended
                                                             December 31,
                                                                 2007
                                                          -------------------
Benefit payments per the financial statements              $     20,051,147
Add: benefits payable at end of year                                  2,845
Less: benefits payable at beginning of year                            (335)
                                                          -------------------
Benefit payments to participants per the Form 5500         $     20,053,657
                                                          ===================

Benefits payable are recorded on the Form 5500 for payments to participants that
have been  processed  and approved for payment prior to December 31, but not yet
paid.

 11

Note 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.


Note 7 - Related Parties

The Plan  holds  investments  in  various  funds  that are part of the  American
Performance  Funds  mutual fund family (AP  Funds).  AP Funds is a  diversified,
open-ended  investment company established in 1987 as a business trust under the
Investment  Company Act of 1940.  Affiliates of BOKF offer 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.  Affiliates of
BOKF are also  service  providers to the AP Funds in the  following  capacities:
Cavanal  Hill  Investment   Management,   Inc.  (Cavanal  Hill),  formerly  AXIA
Investment Management, Inc., a wholly owned subsidiary of Bank of Oklahoma, N.A.
(BOk),  serves as  investment  advisor and  administrator  to the AP Funds;  BOk
serves as custodian for the AP Funds;  BOSC,  Inc., a wholly owned subsidiary of
BOKF, serves as distributor for the AP Funds.  Participants  should refer to the
AP Funds prospectuses for additional information.

A portion of the Plan's  assets are  invested in BOKF  stock.  Since BOKF is the
Plan Sponsor,  investments  involving  BOKF stock  qualify as  party-in-interest
transactions.

The Plan is  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.  Effective  September 22, 2006, the Plan
was  authorized to include the Bank of Oklahoma,  N.A.  International  Strategic
Allocation Fund (SAF) as an international investment option. Cavanal Hill serves
as investment  advisor and BOk serves as custodian and  administrator to the MAP
Funds and SAF.

All of the above transactions are exempt from prohibited transaction rules.


Note 8 - Subsequent Event

In April 2008,  the  Employer  authorized  the  following  modifications  to the
investment  selections available to participants:  (a) removal of the Hotchkis &
Wiley Mid Cap Value Fund and (b) addition of the Columbia Mid Cap Value Fund Z.




                                    SUPPLEMENTAL SCHEDULE


 12


                BOK FINANCIAL THRIFT PLAN FOR SALARIED EMPLOYEES

                FORM 5500 SCHEDULE H; LINE 4i--SCHEDULE OF ASSETS
                              (HELD AT END OF YEAR)

                           EIN: 73-0780382 PLAN #: 002

                                December 31, 2007



                                                                           (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                          $   23,607,005

  *  American Performance Funds                         Cash Management Fund                           11,103,959
                                                        Intermediate Bond Fund                          8,898,330

     SEI Funds                                          Stable Asset Fund                               8,726,114

     American                                           Balanced Fund                                   5,655,031
                                                        Growth Fund of America                          9,714,604

     Neuberger and Berman                               Genesis Trust Fund                             27,318,900

     Dodge and Cox                                      Stock Fund                                     28,388,284

     Vanguard                                           Institutional Index                            20,815,268
                                                        Mid-Cap Index                                   1,802,753

     Hotchkis and Wiley                                 Midcap Value Fund                               3,802,581

     T Rowe Price                                       New Horizons                                    2,635,888

  *  Bank of Oklahoma, N.A. Managed Allocation
         Portfolio (MAP)                                MAP 2010 Fund                                   3,779,674
                                                        MAP 2020 Fund                                   5,235,754
                                                        MAP 2030 Fund                                   4,513,460
                                                        MAP 2040 Fund                                   4,557,193
                                                        MAP 2050 Fund                                     518,241

  *  Bank of Oklahoma, N.A. Strategic Allocation        International Strategic Allocation
         Fund (SAF)                                         Fund                                       12,310,271

     Self-directed common stocks, bonds and             Common stocks, bonds and registered
         registered investment companies                    investment companies                        1,546,241

  *  Participant loans                                  Interest rates ranging from 4.00% to
                                                            13.00%                                      5,020,730
                                                                                                 -------------------

                                                                                                   $  189,950,281
                                                                                                 ===================


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