As filed with the Securities and Exchange Commission on November 16, 1998
- --------------------------------------------------------------------------------




                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 10-Q


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


                    For the Quarter Ended September 30, 1998
                           Commission File No. 0-19341



                            BOK FINANCIAL CORPORATION

                      Incorporated in the State of Oklahoma
                  I.R.S. Employer Identification No. 73-1373454

                             Bank of Oklahoma Tower
                                  P.O. Box 2300
                              Tulsa, Oklahoma 74192

                         Registrant's Telephone Number,
                       Including Area Code (918) 588-6000

                 SECURITIES REGISTERED PURSUANT TO SECTION 12(b)
                               OF THE ACT: (NONE)

                 SECURITIES REGISTERED PURSUANT TO SECTION 12(g)
                                   OF THE ACT:
                        COMMON STOCK ($.00006 Par Value)



      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  twelve  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  the  number of shares  outstanding  of each of the  Registrant's
classes of common stock, as of the latest practicable date: 21,845,241 shares of
common stock ($.00006 par value) as of October 31, 1998.


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





                            BOK Financial Corporation
                                    Form 10-Q
                        Quarter Ended September 30, 1998

                                      Index

Part I.  Financial Information
      Management's Discussion and Analysis                          2
      Report of Management on Consolidated
            Financial Statements                                    13
      Consolidated Statements of Earnings                           14
      Consolidated Balance Sheets                                   15
      Consolidated Statements of Changes
            in Shareholders' Equity                                 16
      Consolidated Statements of Cash Flows                         17
      Notes to Consolidated Financial Statements                    18
      Financial Summaries - Unaudited                               20

Part II.  Other Information
      Item 6. Exhibits and Reports on Form 8-K                      23

Signature                                                           23

MANAGEMENT'S DISCUSSION AND ANALYSIS

HIGHLIGHTS

BOK Financial Corporation ("BOK Financial") recorded net income of $18.8 million
or $0.75 per  diluted  common  share for the third  quarter of 1998  compared to
$16.4  million or $0.65 per diluted  common share for the third quarter of 1997.
Returns on  average  assets and  equity  were  1.31% and  15.76%,  respectively,
compared  to  returns  on  average  assets  and  equity  of  1.25%  and  16.16%,
respectively, for the third quarter of 1997.

Year to date net income and earnings per diluted common share were $55.5 million
or  $2.21,   respectively   for  1998   compared  to  $47.8  million  or  $1.91,
respectively,  for the same period of 1997. Returns on average assets and equity
were 1.33% and  16.24%,  respectively,  for 1998  compared to returns on average
assets and equity of 1.27% and 16.75%, respectively, for 1997.

The increase in net income for the third quarter of 1998 was due to increases of
$8.8 million or 26.4% in fees and commissions  revenue and $7.1 million or 18.0%
in net interest  revenue.  These increases were partially offset by increases of
$10.1  million or 21.7% in operating  expenses and $1.0 million in provision for
loan losses.

RESULTS OF OPERATIONS

Net interest revenue on a  tax-equivalent  basis was $49.1 million for the third
quarter of 1998  compared  to $42.1  million for the third  quarter of 1997,  an
increase of $7.0  million or 16.7%.  Net interest  revenue for third  quarter of
1998  included  $1.8  million  from the  non-recurring  collection  of  foregone
interest.  This  amount has been  excluded  from the  subsequent  discussion  of
changes in net interest revenue and net interest margin.  Average earning assets
increased by $449 million,  including increases in average loans of $302 million
and average securities of $156 million.  Interest bearing liabilities  increased
$291  million,  primarily  due to increases in time deposits of $110 million and
interest  bearing  transaction  accounts of $120  million.  Demand  deposits and
shareholders'  equity,  which are  additional  sources of funding  asset growth,
increased  $143  million and $69  million,  respectively.  The growth in average
earning  assets  in  excess  of  the  growth  in  interest  bearing  liabilities
contributed $5.5 million to the increase in net interest revenue.





- ---------------------------------------------------------------------------------------------------------------------
TABLE 1 - VOLUME/RATE ANALYSIS
(In thousands)
                                                  Three months ended                      Nine months ended
                                                September 30, 1998/1997                September 30, 1998/1997
                                          ---------------------------------------------------------------------------
                                                         Change Due To (1)                      Change Due To (1)
                                                      ------------------------               ------------------------
                                                                      Yield                                  Yield
                                             Change      Volume       /Rate         Change       Volume      /Rate
                                          ---------------------------------------------------------------------------
Tax-equivalent interest revenue:
                                                                                           
  Securities                               $   2,394  $    2,316   $     78       $   5,807  $    6,195    $    (388)
  Trading securities                             336        345          (9)            620         677          (57)
  Loans                                        5,646      6,610        (964)         20,691      21,976       (1,285)
  Funds sold                                    (407)      (342)        (65)           (673)       (691)          18
- ---------------------------------------------------------------------------------------------------------------------
Total                                          7,969      8,929        (960)         26,445      28,157       (1,712)
- ---------------------------------------------------------------------------------------------------------------------
Interest expense:
  Interest bearing transaction deposits          983        933          50           2,834       3,381         (547)
  Savings deposits                               (56)         4         (60)             (6)         47          (53)
  Time deposits                                  966      1,528        (562)          5,412       5,865         (453)
  Other borrowings                              (373)       (96)       (277)         (3,377)     (3,230)        (147)
  Subordinated debenture                       1,224      1,108         116           5,633       5,470          163
- ---------------------------------------------------------------------------------------------------------------------
Total                                          2,744      3,477        (733)         10,496      11,533       (1,037)
- ---------------------------------------------------------------------------------------------------------------------
  Tax-equivalent net interest revenue
    before nonrecurring foregone interest      5,225      5,452        (227)         15,949      16,624         (675)
  Non-recurring foregone interest              1,794                                  3,262
 Change in tax-equivalent adjustment            (100)                                  (177)
- ---------------------------------------------------------------------------------------------------------------------
Net interest revenue                      $                                          19,388
                                               7,119
- ---------------------------------------------------------------------------------------------------------------------
(1) Changes attributable to both volume and yield are allocated to both  volume and yield/rate on an equal basis.



Year to date, net interest  revenue on a tax equivalent basis increased by $19.4
million  compared to 1997.  Excluding the  non-recurring  collection of foregone
interest in 1998, this  represented a 14.2% increase in net interest revenue due
primarily  to the growth of earning  assets in excess of the growth in  interest
bearing liabilities.

Since inception,  BOK Financial has completed  acquisitions which were accounted
for under the purchase method of accounting.  The purchase method results in the
recording  of  goodwill  and  other  identifiable  intangible  assets  that  are
amortized as non-cash charges in future years into operating expense. This is in
contrast to the  "pooling  of  interest"  method,  which is only  applicable  in
certain limited  circumstances.  The pooling of interests method does not result
in the recording of goodwill or other intangible assets.  Since the amortization
of goodwill and other intangible assets does not result in a current period cash
expense,  the economic value to shareholders  under either  accounting method is
essentially the same. Operating results excluding the impact of these intangible
assets are summarized below:


- ------------------------------------------------------------------------------- -------------------------------
TABLE  2 - TANGIBLE OPERATING RESULTS
                                                                 -------------------------------
              (Dollars in Thousands Except Share Data)                 Nine months ended
                                                                 -------------------------------
                                                                   Sept. 30,       Sept. 30,
                                                                      1998            1997
                                                                 --------------- ---------------
                                                                                    
  Net income                                                     $     55,501    $     47,807
  After-tax impact of amortization of intangible assets                 6,173           5,920
- ---------------------------------------------------------------- --------------- ---------------
  Tangible net income                                            $     61,674    $     53,727
- ---------------------------------------------------------------- --------------- ---------------

  Tangible net income per diluted share                          $       2.45    $       2.15
- ---------------------------------------------------------------- --------------- ---------------

  Average tangible shareholders' equity                          $   391,057     $   316,646
  Return on tangible shareholders' equity                              21.09%          22.69%
- ---------------------------------------------------------------- --------------- ---------------

  Average tangible assets                                         $5,498,891      $4,960,512
  Return on tangible assets                                             1.50%           1.45%
- ---------------------------------------------------------------- --------------- ---------------




Net  interest  margin,  the ratio of net  interest  revenue to  average  earning
assets,  was 3.72% for the third quarter of 1998 compared to 3.63% for the third
quarter of 1997. An increase in the total non-interest  bearing funding sources,
primarily  demand  deposits  and  capital,  contributed  8 basis  points  to the
increase in net interest margin while changes in the yield on earning assets and
the cost of interest bearing  liabilities  contributed 1 basis points. The yield
on earning assets  decreased 7 basis points to 7.78% due primarily to a 13 basis
point decrease in loan yields.  Average loans,  which  generally are the highest
yielding category of earning assets,  increased to 57.8% of total earning assets
for the third  quarter of 1998  compared to 57.1% in the third  quarter of 1997.
This change in the composition of earning assets  partially  offset the decrease
in loan  yield.  At the same  time,  the cost of  interest  bearing  liabilities
decreased 8 basis  points to 4.83%.  The cost of interest  bearing  deposits and
other borrowings  decreased by 9 basis points and 10 basis points,  respectively
while  the cost of  subordinated  debt  increased  by 40 basis  points.  Average
deposits,  which generally are the lowest costing  category of interest  bearing
liabilities  increased to 69.3% of total interest  bearing  liabilities  for the
third  quarter of 1998  compared  to 68.6% for the third  quarter of 1997.  This
shift  in the  mix of  interest  bearing  liabilities  also  contributed  to the
decrease in the cost of funds.

Since  inception  in 1990,  BOK  Financial  has  followed  a  strategy  of fully
utilizing  its capital  resources by borrowing  funds in the capital  markets to
supplement  deposit growth and to invest in  securities.  Although this strategy
frequently  results in a net interest  margin  which falls below those  normally
seen in the  commercial  banking  industry,  it provides  positive  net interest
revenue.  Management estimates that for the third quarter of 1998, this strategy
resulted in a 63 basis point  decrease in net  interest  margin.  However,  this
strategy  contributed  $1.8  million  to net  interest  revenue.  As more  fully
discussed in the Market Risk section,  management  employs various techniques to
control,  within  established  parameters,  the interest rate and liquidity risk
inherent in this strategy.

Other  operating  revenue  increased  $8.5 million or 24.9% compared to the same
quarter  of 1997.  Total  fees and  commissions,  which  are  included  in other
operating revenue, increased $8.8 million or 26.4%. All categories of fee income
showed increases over the third quarter of 1997. Most notably,  mortgage banking
revenue  increased  $2.5  million due to a $2.2  million  increase in  secondary
marketing income. Secondary marketing revenue totaled $2.6 million for the third
quarter  of 1998  compared  to $417  thousand  for the  third  quarter  of 1997.
Servicing revenue was $8.3 million and $8.0 million, respectively, for the third
quarters of 1998 and 1997.  Declining  mortgage  interest rates  throughout 1998
have significantly increased the loan refinancing  activities.  This refinancing
activity has a positive effect on earnings through gains in secondary  marketing
activities.  However, the refinancing activity has a negative effect on earnings
from loan servicing through  increased  amortization  expense and,  potentially,
increased  impairment  risk  on  capitalized  mortgage  loan  servicing  rights.
Strategies used by BOK Financial to reduce this impairment risk are discussed in
the Market  Risk  section of this  report.  Loans  serviced by BOK  Mortgage,  a
division of BOk,  totaled $6.6 billion at September 30, 1998. In addition to the
increase in mortgage banking revenue, transaction card revenue and brokerage and
trading  revenue  each  increased  $1.5  million  due to  increased  transaction
volumes.


- -------------------------------------------------------------------------------------------------------------------------
TABLE 3 - OTHER OPERATING REVENUE
(In thousands)

                                                                Three Months Ended
                                  -------------------------------------------------------------------------------
                                      Sept. 30,        June 30,       March 31,        Dec. 31,       Sept. 30,
                                        1998            1998            1998             1997            1997
                                  -------------------------------------------------------------------------------
                                                                                            
Brokerage and trading revenue      $    4,109      $    4,051      $    3,131       $    2,565      $    2,522
Transaction card revenue                6,516           6,010           5,540            4,828           5,770
Trust fees and commissions              7,751           7,654           6,884            6,528           6,405
Service charges and fees
  on deposit accounts                   8,015           7,440           7,638            7,570           7,255
Mortgage banking revenue               10,929          10,940           9,321            9,411           8,416
Leasing revenue                         1,749           1,804           1,661            1,522           1,566
Other revenue                           3,239           3,017           2,685            3,198           1,546
- -----------------------------------------------------------------------------------------------------------------
  Total fees and commissions           42,308          40,916          36,860           35,622          33,480
- -----------------------------------------------------------------------------------------------------------------
Gain on student loan sales                 14             119           1,415               99              26
Gain (loss) on securities                 538           3,320           2,512           (2,200)            809
- -----------------------------------------------------------------------------------------------------------------
  Total other operating revenue    $   42,860      $   44,355      $   40,787       $   33,521      $   34,315
- -----------------------------------------------------------------------------------------------------------------




Year to date,  other operating  revenue  increased $31.8 million or 33.1%.  This
included an increase of $26.0 million or 27.6% in fee and commission revenue due
to increases in all categories of other operating revenue.


- ---------------------------------------------------------------------------------------------------------------------
TABLE 4 - OTHER OPERATING EXPENSE
(In thousands)

                                                                       Three Months Ended
                                  -----------------------------------------------------------------------------------
                                      Sept. 30,       June 30,       March 31,         Dec. 31,         Sept. 30,
                                        1998            1998            1998             1997              1997
                                  -----------------------------------------------------------------------------------
                                                                                              
Personnel                         $     26,067    $    25,715     $     24,829     $    24,811      $     22,475
Business promotion                       1,862          1,662            1,897           2,450             2,067
Contribution of stock to BOK
   Charitable Foundation                     -              -            2,257           3,638                 -
Professional fees/services               2,622          2,308            1,596           2,123             1,579
Net occupancy, equipment
  and data processing                   10,574         10,594            9,214          10,426             8,618
FDIC and other insurance                   270            345              310             258               374
Printing, postage and supplies           2,267          2,223            2,047           2,220             1,817
Net gains and operating
  expenses on repossessed assets           (19)          (315)             (55)         (1,553)           (1,662)
Amortization of intangible
  assets                                 2,268          2,272            2,302           2,336             2,362
Mortgage banking costs                   6,374          6,290            6,023           6,137             5,202
Provision for impairment of
   mortgage servicing rights                 -         (1,000)           3,000           4,100                 -
Other expense                            4,552          3,710            3,773           4,331             3,888
- ---------------------------------------------------------------------------------------------------------------------
  Total                            $    56,837    $    53,804     $     57,193     $    61,277      $     46,720
- ---------------------------------------------------------------------------------------------------------------------


Other  operating  expenses for the third quarter of 1998 increased $10.1 million
or 21.7%  compared  to the third  quarter  of 1997.  Excluding  the  effects  of
significant  or  non-recurring  items as shown  in Table 5,  operating  expenses
increased $8.5 million or 17.5%.

Personnel  costs  increased  $3.6  million  due to  increased  staffing,  normal
compensation  increases  and  increased  incentive  compensation.  Staffing on a
full-time  equivalent  ("FTE") basis  increased by 161  employees  while average
compensation  per FTE increased by 8.4%.  These changes  reflect the addition of
several senior level positions in both the lending and operations  areas as well
as related  support  staff in the second half of 1997.  Incentive  compensation,
which varies directly with revenue increase of $531 thousand to $2.6 million for
the quarter.  Occupancy,  equipment and data  processing  costs  increased  $2.0
million or 22.7%,  which  included  increases of $785  thousand in net occupancy
costs and $1.1 million in data processing  costs.  The increase in net occupancy
costs was due primarily to the  conversion of BOK  Financial's  ownership in its
Oklahoma  City  headquarters  building  from a  general  interest  to a  limited
interest,  which  resulted in a decrease in rental  income of $679  thousand.  A
significant  portion of BOK  Financial's  data processing is outsourced to third
parties.  Therefore, data processing costs are directly related to the volume of
transactions  processed.  Mortgage banking costs increased $1.2 million or 22.5%
due to increased  amortization  of  capitalized  servicing  rights and a greater
volume of loans originated.

The efficiency ratio, the ratio of other operating expenses, excluding net gains
on real  estate  sales  and the  previously  discussed  large  or  non-recurring
transactions,  to  tax-equivalent  net  interest  revenue  and  other  operating
revenue,  excluding  securities gains and losses was 62.2% for the third quarter
of 1998 compared to 64.0% for the third quarter of 1997.






Year to date,  operating  expenses  increased $33.9 million or 25.4%.  Excluding
significant or non-recurring  items,  operating expenses increased $27.8 million
or 20.4% due to the same factors which contributed to the quarterly increases.


- ---------------------------------------------------------------------------------------------------------------------
TABLE 5 - OTHER OPERATING EXPENSE, EXCLUDING SIGNIFICANT OR NONRECURRING ITEMS
(In thousands)

                                                                    Three Months Ended
                                      -------------------------------------------------------------------------------
                                           Sept. 30,      June 30,       March 31,       Dec. 31,        Sept. 30,
                                             1998           1998            1998           1997            1997
                                      -------------------------------------------------------------------------------
                                                                                              
Total other operating expense          $    56,837    $    53,804     $    57,193     $    61,277    $    46,720
Contribution of stock to BOk
  Charitable Foundation                          -                         (2,257)         (3,638)             -
Provision for impairment of mortgage
  Servicing rights                               -          1,000          (3,000)         (4,100)             -
Net gains and operating costs from
   Repossessed assets                           19            315              55           1,553          1,662
- ---------------------------------------------------------------------------------------------------------------------
  Total                                $    56,856    $    55,119     $    51,991     $    55,092    $    48,382
- ---------------------------------------------------------------------------------------------------------------------



RISK ELEMENTS

The aggregate  loan  portfolio at September 30, 1998  increased  $186 million to
$3.1 billion during the third quarter of 1998.  Commercial  loans  increased $92
million and commercial  real estate loans  increased $74 million,  respectively,
while residential  mortgage loans increased $35 million. The aggregate growth in
the loan portfolio during the third quarter of 1998 included  increases for Bank
of Texas,  N.A.  of $38  million or 19% and for Bank of  Arkansas,  N.A.  of $11
million or 15%.


- ---------------------------------------------------------------------------------------------------------------------
TABLE 6 - LOANS
(In thousands)

                                         Sept. 30,       June 30,        March 31,       Dec. 31,        Sept. 30,
                                           1998            1998            1998            1997             1997
                                    ---------------------------------------------------------------------------------
Commercial:
                                                                                                  
  Energy                             $     359,986   $     315,051    $      324,052 $     332,770    $      333,347
  Manufacturing                            229,495         223,540           222,385       201,918           185,795
  Wholesale/retail                         280,917         275,544           250,702       242,156           255,768
  Agricultural                             143,061         133,148           159,324       151,525           155,052
  Services                                 533,550         496,347           473,684       465,317           416,871
  Other commercial and industrial          127,017         138,278           139,516       105,714           168,028
Commercial real estate:
  Construction and land development        149,679         139,323           123,412       102,800            79,275
  Multifamily                              150,150         115,821            95,335       100,422           110,340
  Other real estate loans                  339,314         310,417           283,329       274,579           258,280
Residential mortgage:
  Secured by 1-4 family
    Residential properties                 442,443         390,765           404,481       419,139           414,050
  Residential mortgages held for            82,200          98,912           118,777        78,669           103,300
    sale
Consumer                                   230,702         245,722           241,299       290,084           289,892
- ---------------------------------------------------------------------------------------------------------------------
  Total                              $   3,068,514   $   2,882,868    $    2,836,296 $   2,765,093    $    2,769,998
- ---------------------------------------------------------------------------------------------------------------------



BOK Financial has achieved some geographic  diversification through acquisitions
and expansion into Northwest Arkansas,  North Texas and New Mexico. However, the
majority of commercial and consumer  loans are to businesses and  individuals in
Oklahoma.  This  geographic  concentration  subjects the loan  portfolio to the
general  economic  conditions in Oklahoma.  Notable loan  concentrations  by the
primary industry of the borrowers are presented in Table 6.



Nonperforming  assets totaled $34.0 million at September 30, 1998, a decrease of
$7.9 million from June 30, 1998.  Nonaccrual loans decreased $722 thousand while
loans 90 days or more past due decreased $6.0 million.


- ---------------------------------------------------------------------------------------------------------------------
TABLE 7 - NONPERFORMING ASSETS
(In thousands)

                                                  Sept. 30,      June 30,    March 31,     Dec. 31,      Sept. 30,
                                                    1998          1998          1998         1997           1997
                                             ------------------------------------------------------------------------
Nonperforming assets:
 Nonperforming loans:
  Nonaccrual loans:
                                                                                               
   Commercial                                  $     8,430    $     9,045  $    12,556  $    12,717   $    16,103
   Commercial real estate                            2,105          2,473        2,824        2,960         3,854
   Residential mortgage                              2,410          2,072        2,243        2,441         2,512
   Consumer                                          1,068          1,145        1,192          649           713
- ---------------------------------------------------------------------------------------------------------------------
    Total nonaccrual loans                          14,013         14,735       18,815       18,767        23,182
  Loans past due (90 days) (1)                      15,594         21,568       18,330       18,178        20,551
- ---------------------------------------------------------------------------------------------------------------------
   Total nonperforming loans (1)                    29,607         36,303       37,145       36,945        43,733
- ---------------------------------------------------------------------------------------------------------------------
 Other nonperforming assets:
  Commercial real estate                             3,544          4,515        2,297        2,395         2,503
  Other                                                809          1,075        3,069        2,863         2,684
- ---------------------------------------------------------------------------------------------------------------------
     Total other nonperforming assets                4,353          5,590        5,366        5,258         5,187
- ---------------------------------------------------------------------------------------------------------------------
 Total nonperforming assets                    $    33,960    $    41,893  $    42,511  $    42,203   $    48,920
- ---------------------------------------------------------------------------------------------------------------------
Ratios:
 Reserve for loan losses to
  Nonperforming loans                               209.85%        159.17%      147.63%      143.73%       119.80%
 Nonperforming loans (1) to
  Period-end loans (2)                                0.99           1.30         1.37         1.38          1.64
- ---------------------------------------------------------------------------------------------------------------------
(1) Includes 1-4 family loans
    Guaranteed by agencies of
    The U.S. government                        $    18,191    $    17,387  $    16,006  $    14,468   $    16,010
(2) Excludes residential mortgage loans held for sale
- ---------------------------------------------------------------------------------------------------------------------


BOK Financial  monitors loan  performance  on a portfolio and  individual  loan
basis.  Nonperforming  loans are  reviewed at least  quarterly.  The loan review
process  involves  evaluating  the  credit  worthiness  of  customers  and their
ability, based upon current and anticipated economic conditions,  to meet future
principal and interest payments. Loans may be identified which 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 performing in
accordance  with  the  original  terms  of the  loan  agreements  and no loss of
principal  or  interest  is  anticipated,  such  loans are not  included  in the
Nonperforming Assets totals. These loans are assigned to various risk categories
in order to focus management's  attention on the loans with higher risk of loss.
At  September  30,  1998,  loans  totaling  $70  million  were  assigned  to the
substandard  risk  category and loans  totaling $37 million were assigned to the
special  mention  risk  category,  compared  to $76  million  and  $58  million,
respectively, at June 30, 1998.

The reserve for loan losses,  which is available to absorb  losses  inherent in
the loan portfolio,  totaled $62 million at September 30, 1998,  compared to $58
million at June 30, 1998 and $53 million at December 31, 1997. This  represented
2.08%,  2.08% and  1.98% of total  loans,  excluding  loans  held for  sale,  at
September 30, 1998, June 30, 1998 and December 31, 1997, respectively. Losses on
loans held for sale,  principally  mortgage loans  accumulated  for placement in
securitized pools, are charged to earnings through adjustments in carrying value
to the lower of cost or market value in  accordance  with  accounting  standards
applicable  to  mortgage  banking.  Table  8  presents  statistical  information
regarding the reserve for loan losses.





- -------------------------------------------------------------------------------------------------------------------
TABLE 8 - SUMMARY OF LOAN LOSS EXPERIENCE
(In thousands)

                                                                 Three Months Ended
                                  ---------------------------------------------------------------------------------
                                       Sept. 30,      June 30,       March 31,        Dec. 31,        Sept. 30,
                                         1998           1998            1998            1997             1997
                                  ---------------------------------------------------------------------------------
                                                                                             
Beginning balance                  $      57,782  $      54,839   $      53,101   $      52,393   $      49,871
 Loans charged-off:
  Commercial                                 532          1,339             172           1,852           1,179
  Commercial real estate                      50             92               -             441             194
  Residential mortgage                        28             19              50             269              91
  Consumer                                   888            845           1,305           1,464           1,051
- -------------------------------------------------------------------------------------------------------------------
  Total                                    1,498          2,295           1,527           4,026           2,515
- -------------------------------------------------------------------------------------------------------------------
 Recoveries of loans previously charged-off:
   Commercial                                796            534             120             611           1,004
   Commercial real estate                    551            170             161              69             393
   Residential mortgage                        -             80              82             119             325
   Consumer                                  499            501             432             435             315
- -------------------------------------------------------------------------------------------------------------------
    Total                                  1,846          1,285             795           1,234           2,037
- -------------------------------------------------------------------------------------------------------------------
Net loans charged-off                       (348)         1,010             732           2,792             478
 Provision for loan losses                 4,001          3,953           2,470           3,500           3,000
- -------------------------------------------------------------------------------------------------------------------
Ending balance                     $      62,131  $      57,782   $      54,839   $      53,101   $      52,393
- -------------------------------------------------------------------------------------------------------------------
 Reserve to loans outstanding
  at period-end(1)                          2.08           2.08            2.02            1.98            1.96
 Net loan losses (annualized)
  to average loans (1)                     (0.05)          0.14            0.10            0.14            0.07
- -------------------------------------------------------------------------------------------------------------------
(1) Excludes  residential  mortgage loans held for sale which are carried at the
lower of aggregate cost or market value.


The adequacy of the reserve for loan losses is assessed by management based upon
an  evaluation  of  the  current  risk  characteristics  of the  loan  portfolio
including  current  economic  conditions,   historical  experience,   collateral
valuation,  changes  in the  composition  of the  portfolio  and other  relevant
factors.  A  provision  for loan losses is charged  against  earnings in amounts
necessary  to  maintain  the  adequacy of the  reserve  for loan  losses.  These
provisions  totaled $4.0 million for the third  quarter of 1998 and $3.0 million
for the third quarter of 1997. The increased  provision  reflected  management's
assessment of increased risk of loan losses due primarily to continued growth in
the loan  portfolio,  geographic  expansion  of BOK  Financial's  market area to
include North Texas and New Mexico, and an expectation that economic  activities
will moderate in BOK Financial's primary market areas.

At  September  30,  1998,  other assets  included  $28.4  million of natural gas
compression and other equipment being leased to various customers by entities in
which a subsidiary  of BOK  Financial is a general  partner.  The terms of these
leases  are  generally  much  shorter  than the  estimated  useful  lives of the
equipment.  Therefore, as each lease expires, there is a risk that the remaining
net  book  value  of the  equipment  may  not be  recovered  based  upon  market
conditions and re-leasing opportunities at that time.

Market Risk

Market  risk is a broad term that  relates to 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
rates,  commodity  prices,  or  equity  prices.   Additionally,   the  financial
instruments  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 its  portfolio  of assets  held for  purposes  other than
trading. The effect of other changes, such as foreign exchange rates,  commodity
prices or equity  prices is not material to BOK  Financial  nor is the effect of
market  risk  on  financial   instruments   held  for  trading   purposes.   The
responsibility for managing market risk rests with the Asset/Liability Committee
which operates under policy  guidelines which have been established by the Board
of Directors.  These guidelines limit the negative  acceptable  variation in net
interest  revenue and economic value of equity due to a 200 basis point increase
or  decrease  in  interest  rates  to +/-  10%,  establish  maximum  levels  for
short-term borrowings,  short-term assets, and public and brokered deposits, and
establish  minimum levels for unpledged assets,  among other things.  Compliance
with these guidelines is reviewed monthly.

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
assuming  expected  interest rates over the next twelve months based upon both a
"most  likely"  rate  scenario  and on two  "shock  test"  scenarios,  the first
assuming  a  sustained  parallel  200  basis  point  increase  and the  second a
sustained  parallel 200 basis point decrease in interest  rates.  An independent
source is used to determine  the most likely  interest  rates for the next year.
BOK  Financial's  primary  interest rate exposures  include the Federal  Reserve
Bank's discount rate which affects short-term borrowings, the prime lending rate
and the London InterBank Offering Rate ("LIBOR") which are the basis for much of
the  variable-rate  loan pricing,  and the 30-year  mortgage rate which directly
affects  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.  In  addition,  sensitivity  of fee income to market  interest  rate
levels,  such  as  those  related  to  cash  management  services  and  mortgage
servicing,  are  included.  The  model  incorporates   management's  assumptions
regarding  the level of  interest  rate or  balance  changes  on  indeterminable
maturity deposits (demand deposits,  interest-bearing  transaction  accounts and
savings accounts) for a given level of market rate changes. The assumptions have
been developed through a combination of historical  analysis and future expected
pricing behavior. Interest rate swaps on all products are included to the extent
that they are effective in the 12-month simulation period. Additionally, changes
in prepayment behavior of mortgage-backed securities, residential mortgage loans
and mortgage  servicing in each rate  environment  are captured  using  industry
estimates of prepayment  speeds for various  coupon  segments of the  portfolio.
Finally,  the impact of planned  growth and new business  activities is factored
into the  simulation  model.  At September  30, 1998,  this  modeling  indicated
interest rate sensitivity as follows:
                                     200 bp           200 bp             Most
                                    increase         decrease           Likely
Anticipated impact over the
  next twelve months compared
  to a constant interest rate
  scenario
      Net interest revenue         $  1,849        $ ( 2,818)         $ (1,706)
                                       0.9%            (1.4%)            (0.8%)
      Net income                   $  3,701        $ (12,717)         $ (1,151)
                                       4.2%           (14.3%)            (1.3%)
      Economic value of equity     $(55,913)       $   1,560          $  8,151
                                      (7.2%)           (0.2%)            (1.1%)

The  estimated  changes in interest  rates on net  interest  revenue or economic
value of equity is not  projected  to be  significant  within  the +/- 200 basis
point range of assumptions.  However, this modeling indicated that under the 200
basis  point  decrease   scenario,   the  after-tax  value  of  BOK  Financial's
capitalized  mortgage loan  servicing  rights would  decrease by $11.0  million,
excluding the effect of the mortgage  servicing hedge program which is discussed
subsequently.  While  this  decrease  in value  would  largely  be  offset by an
increase in the value of the securities portfolio, current accounting principles
require that the decreased value of mortgage loan servicing rights be charged to
earnings while the increased  value of available for sale securities be credited
to shareholders'  equity.  The result would be a decrease in net income of $12.7
million  or 14.3%  compared  to  projected  net  income  assuming  no changes in
interest rates, again excluding the effect of the hedge program.

During 1998,  BOK Financial  implemented a program which uses futures  contracts
and  call  and put  options  (collectively  "derivative  instruments")  to hedge
against the risk of loss on capitalized mortgage servicing rights. The intent of
this  program is to reduce the pre-tax risk of loss which would result from a 50
basis point  decrease in interest rates from  approximately  $14.0 million to an
insignificant   amount  through   market  value   increases  on  the  derivative
instruments.  While this program is expected to significantly reduce the risk of
loss on  capitalized  mortgage  servicing  rights  in a  falling  interest  rate
environment,  it limites the appreciation in value of mortgage  servicing rights
which would otherwise occur in a rising rate environment.  Management  estimates
that a 50 basis point  increase in interest  rates would result a $13.1  million
decrease in the market value of the derivative  instruments  compared to a $17.3
million increase in the fair value of the capitalized mortgage servicing rights.
Management  believes that an analysis of the effect of 50 basis point changes in
interest  rates on the value of the  mortgage  servicing  portfolio  and related
derivative  instruments  is more  useful in  monitoring  risk due to the dynamic
hedging strategy employed and the increased probability of interest rate changes
within this range. As of September 30, 1998,  this hedging  program  resulted in
net realized  gains of $10.9 million and net  unrealized  gains of $18.0 million
which are recorded as  reductions to the carrying  value of the hedged  mortgage
servicing rights.

The simulation is based on numerous assumptions  regarding the effect 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  and  changes  in  market
conditions and management strategies, among other factors.

- --------------------------------------------------------------------------------
TABLE 9 - INTEREST
RATE SWAPS
(In thousands)

                   Notional          Pay             Receive         Fair
                    Amount           Rate             Rate          Value
              ------------------------------------------------------------------
Expiration:
  1998              20,000     6.35 - 6.83% (1)        7.96%            213
  1999              22,000     5.24 - 7.30 (1)     6.80 - 7.68          240
  2002               7,660           6.21              5.38 (1)        (324)
  2003              26,690     5.26 - 5.99             5.38 (1)        (633)
  2004               9,004           5.92              5.38 (1)        (364)
  2006              16,500           7.26              5.31 (1)      (1,126)
  2007             100,000           5.38 (1)       6.75 - 6.80      12,088
  2007              10,000           7.47              5.31 (1)        (884)
  2008               1,650           5.59              5.31 (1)         (64)
- --------------------------------------------------------------------------------
(1)  Rates  are  variable  based  on  LIBOR  and  reset  monthly,  quarterly  or
semiannually.

BOK Financial uses interest rate swaps, a form of off-balance  sheet  derivative
product, in managing its interest rate sensitivity. These products are generally
used to more closely match interest paid on certain  long-term  certificates  of
deposit and  subordinated  debt with earning assets.  BOK Financial  accrues and
periodically  receives a fixed amount from the counterparties to these swaps and
accrues and periodically makes a variable payment to the counterparties.  During
the third  quarter of 1998,  income  from these swaps  exceeded  the cost of the
swaps by $365  thousand.  Credit risk from these swaps is closely  monitored and
counterparties  to these  contracts  are  selected on the basis of their  credit
worthiness, among other factors.


- --------------------------------------------------------------------------------
TABLE 10 - CAPITAL RATIOS
                              Sept. 30,  June 30,  March 31,  Dec. 31, Sept. 30,
                                1998       1998       1998     1997        1997
                              --------------------------------------------------
Average shareholders' equity
  to average assets            8.29%      8.18%      8.00%     8.13%     7.76%
Risk-based capital:
  Tier 1 capital               9.44       9.35       9.47      9.49      8.93
  Total capital               14.11      14.15      14.47     14.69     14.08
Leverage                       7.28       7.24       6.81      6.81      6.53

Year 2000 Considerations

The Year 2000  issue,  in  general,  is the result of  computer  programs  being
written using two digits  rather than four to define the  applicable  year.  Any
computer  programs that have date sensitive  software may recognize a date using
"00" as the year 1900 rather than the year 2000.  This could  result in a system
failure or miscalculations  causing  disruptions of operations,  including among
other  things,  a temporary  inability to process  transactions  or to engage in
similar normal business activities.

The  Federal  Financial  Institution   Examination  Council  ("FFIEC")  provides
regulatory  guidance on BOK Financial's and other financial  institutions'  Year
2000 compliance and has outlined five phases to effectively manage the Year 2000
issues.  The phases are:  Awareness;  Assessment;  Renovation;  Validation;  and
Implementation.   The  FFIEC  encouraged   institutions  to  have  all  critical
applications  identified  and  priorities  set by September 30, 1997 and to have
renovation  work largely  completed  and testing  well  underway by December 31,
1998. BOK Financial is currently within the FFIEC guidelines.  BOK Financial, at
the present time, expects to have  substantially all of its critical  outsourced
systems renovated by December 31, 1998, with the remaining  critical  outsourced
systems renovated by February 28, 1999.  Additionally,  BOK Financial expects to
have all critical internal systems renovated by December 31, 1998.

Assisting  in BOK  Financial's  Year 2000  effort  are the Year  2000  Oversight
Committee,  comprised of various members of executive  management,  as well as a
Year 2000 Project Team,  which  includes  representatives  from BOK  Financial's
major business units. Both groups meet on a regular basis to monitor and discuss
continuing  Year  2000  developments.  The  Board of  Directors  recognizes  the
importance of and supports these Year 2000 initiatives.

Substantially all critical  applications are run by outsourced providers of data
processing  services.  These  processors  have been  contacted and have provided
compliance  status reports for their respective  hardware and software  systems.
BOK Financial's core processing systems are outsourced to FiServ Solutions, Inc.
("FiServ"), based in Pittsburgh,  Pennsylvania.  FiServ is an international data
processing  company which  specializes in financial  institution data processing
and is subject to regulatory requirements imposed upon bank data processors. BOK
Financial  currently  receives  monthly  updates from FiServ to ensure  progress
towards completion of the Year 2000 compliance process. Testing of these systems
began  in  August  1998  and  is  scheduled  to run  through  December  1998  as
renovations  are  completed.  BOK  Financial  personnel  are members of FiServ's
customer  advisory  committee  and will directly  participate  in the testing of
these  applications.  FiServ has stated that it will complete the  renovation of
all of its systems and place the  renovated  systems  into  production  by early
1999.

BOK  Financial's  trust  accounting  systems are outsourced to M&I Data Services
("M&I)",  based  in  Milwaukee,  Wisconsin.  Proxy  testing  of  the  M&I  trust
accounting  system was  conducted in June,  1998 by members of M&I's staff.  The
test  procedures  and results were subject to review by the M&I Advisory  Board,
which included a BOK Financial representative.  The results of this testing have
been analyzed and accepted as satisfactory by BOK Financial's management.

BOK Financial is developing  remediation  contingency plans to address Year 2000
issues  related  to BOK  Financial's  internal  systems  and the  systems of its
vendors.  It has also initiated  communication with large customers to determine
what steps they have  undertaken to ensure they are prepared for Year 2000. This
effort has enabled  BOK  Financial  to adopt  contingency  plans  related to the
possible  effects of the Year 2000 issue on the  credit  risk of its  borrowers,
liquidity needs and other factors.

BOK Financial  expects to invest  approximately  $12 million in computer systems
upgrades  during 1998,  including $2 million  directly  related to the Year 2000
issue. The majority of computer systems upgrades have been planned in the normal
course of business for competitive  reasons,  although compliance with Year 2000
issues is a factor in determining the timing of such upgrades. Substantially all
of the planned  investments will be completed during 1998. These investments are
in addition to upgrades for Year 2000  compliance  by outside  processors  which
provide  services to BOK  Financial.  During 1997,  BOK Financial  invested $5.2
million in computer systems upgrades with minimal expenditures  directly related
to the Year 2000  issue.  Based upon the  anticipated  expenditures,  management
believes that the costs of the Year 2000 compliance  efforts will not materially
affect BOK Financial's results of operations, liquidity or capital resources.

The foregoing forward-looking statements,  including the costs of addressing the
Year 2000 issue and the dates upon which  compliance  will be attained,  reflect
management's  current  assessment and estimates with respect to BOK  Financial's
Year 2000  compliance  effort.  Various  factors  could cause  actual  plans and
results  to differ  materially  from  those  contemplated  by such  assessments,
estimates and forward-looking  statements,  many of which are beyond the control
of BOK Financial.  Some of these factors include,  but are not limited to, third
party modification plans,  availability of technological and monetary resources,
representations by vendors and counter parties, technological advances, economic
considerations  and consumer  perceptions.  BOK Financial's Year 2000 compliance
program is an ongoing process involving continual  evaluation and may be subject
to change in response to new developments.





REPORT OF MANAGEMENT ON CONSOLIDATED FINANCIAL STATEMENTS

Management is responsible for the consolidated  financial  statements which have
been prepared in accordance with generally accepted  accounting  principles.  In
management's  opinion,  the  accompanying   unaudited   consolidated   financial
statements  contain all adjustments  (consisting of normal  recurring  accruals)
necessary to present fairly the financial  condition,  results of operations and
cash  flows of BOK  Financial  and its  subsidiaries  at the  dates  and for the
periods presented.

The financial  information  included in this interim report has been prepared by
management without audit by independent public accountants and should be read in
conjunction  with BOK Financial's  1997 Form 10-K to the Securities and Exchange
Commission which contains audited financial statements.





- -------------------------------------------- --- -------------- --- ------------ ------------- -- --------------
Consolidated Statement of Earnings
(In Thousands Except Share Data)
                                                 Three Months Ended        Nine Months Ended
                                                    September 30,            September 30,
                                               ------------------------  ----------------------
                                                  1998         1997       1998       1997
                                               ------------------------  ------- --------------
Interest Revenue
                                                                            
Loans                                         $ 66,379    $  59,023    $ 189,928 $  166,222
Taxable securities                              27,300       24,354       79,653     72,714
Tax-exempt securities                            4,010        4,378       12,024     12,732
- -------------------------------------------- ----------------------------------- --------------
   Total securities                             31,310       28,732       91,677     85,446
- -------------------------------------------- ----------------------------------- --------------
Trading securities                                 389           53          813        193
Funds sold                                         333          740        1,595      2,268
- -------------------------------------------- ----------------------------------- --------------
   Total interest revenue                       98,411       88,548      284,013    254,129
- -------------------------------------------- ----------------------------------- --------------
Interest Expense
Deposits                                        32,275       30,382       99,183     90,943
Other borrowings                                16,830       17,203       44,194     47,571
Subordinated debenture                           2,529        1,305        7,360      1,727
- -------------------------------------------- ----------------------------------- --------------
   Total interest expense                       51,634       48,890      150,737    140,241
- -------------------------------------------- ----------------------------------- --------------
Net Interest Revenue                            46,777       39,658      133,276    113,888
Provision for Loan Losses                        4,001        3,000       10,424      5,526
- -------------------------------------------- ----------------------------------- --------------
Net Interest Revenue After
Provision for Loan Losses                       42,776       36,658      122,852    108,362
- -------------------------------------------- ----------------------------------- --------------
Other Operating Revenue
Brokerage and trading revenue                    4,109        2,522       11,291      6,991
Transaction card revenue                         6,516        5,770       18,066     13,753
Trust fees and commissions                       7,751        6,405       22,289     17,534
Service charges and fees on deposit              8,015        7,255       23,093     21,081
accounts
Mortgage banking revenue, net                   10,929        8,416       31,190     22,824
Leasing revenue                                  1,749        1,566        5,214      4,339
Other revenue                                    3,239        1,546        8,941      7,574
- -------------------------------------------- ----------------------------------- --------------
Total fees and commissions revenue              42,308       33,480      120,084     94,096
- -------------------------------------------- ----------------------------------- --------------
Gain on sale of student loans                       14           26        1,548      1,211
Securities gains (losses), net                     538          809        6,370        871
- -------------------------------------------- ----------------------------------- --------------
Total other operating revenue                   42,860       34,315      128,002     96,178
- -------------------------------------------- ----------------------------------- --------------
Other Operating Expense
Personnel                                       26,067       22,475       76,611     62,917
Business promotion                               1,862        2,067        5,421      6,207
Contribution of stock to BOk
   Charitable     Foundation                         -            -        2,257          -
Professional fees and services                   2,622        1,579        6,526      4,646
Net occupancy, equipment & data processing      10,574        8,618       30,382     25,188
FDIC and other insurance                           270          374          925      1,035
Printing, postage and supplies                   2,267        1,817        6,537      5,563
Net(gains) losses, and operating
expenses of repossessed assets                     (19)      (1,662)        (389)    (2,296)
Amortization of intangible assets                2,268        2,362        6,842      6,488
Mortgage banking costs                           6,374        5,202       18,687     13,831
Provision for impairment of mortgage
   servicing rights                                  -            -        2,000          -
Other expense                                    4,552        3,888       12,035     10,310
- -------------------------------------------- ----------------------------------- --------------
Total Other Operating Expense                   56,837       46,720      167,834    133,889
- -------------------------------------------- ----------------------------------- --------------
Income Before Taxes                             28,799       24,253       83,020     70,651
Federal and state income tax                    10,049        7,857       27,519     22,844
- -------------------------------------------- ----------------------------------- --------------
Net Income                                    $ 18,750    $  16,396    $  55,501 $   47,807
- -------------------------------------------- ----------------------------------- --------------
Earnings Per Share:
Net Income
   Basic                                      $    .84    $     .73    $   2.48  $    2.13
- -------------------------------------------- ----------------------------------- --------------
   Diluted                                    $    .75    $     .65    $   2.21  $    1.91
- -------------------------------------------- ----------------------------------- --------------
Average Shares Used in Computation:
   Basic                                    21,862,010   21,906,321  21,897,677  21,882,733
- -------------------------------------------- --------------------------------------------------
   Diluted                                  25,090,677   25,099,709  25,150,794  25,032,857
- -------------------------------------------- --------------------------------------------------
See accompanying notes to consolidated financial statements.






- --------------------------------------------------------------------------------------------------------------------
CONSOLIDATED BALANCE SHEETS
(In Thousands Except Share Data)

                                                                   Sept. 30,      December 31,         Sept. 30,
                                                                     1998             1997               1997
                                                                 ---------------------------------------------------
ASSETS
                                                                                                    
Cash and due from banks                                        $      346,183   $      371,321    $      340,735
Funds sold                                                             35,936           18,005            37,850
Trading securities                                                     22,730            4,999             2,555
Securities:
  Available for sale                                                1,981,415        1,749,411         1,719,554
  Investment (fair value:  September 30, 1998 - $220,161;
    December 31, 1997 -$214,125;
    September 30, 1997 - $214,980 )                                   221,329          213,111           214,703
- --------------------------------------------------------------------------------------------------------------------
    Total securities                                                2,202,744        1,962,522         1,934,257
- --------------------------------------------------------------------------------------------------------------------
Loans                                                               3,068,514        2,765,093         2,769,998
Less reserve for loan losses                                           62,131           53,101            52,393
- --------------------------------------------------------------------------------------------------------------------
  Net loans                                                         3,006,383        2,711,992         2,717,605
- --------------------------------------------------------------------------------------------------------------------
Premises and equipment, net                                            63,490           65,478            63,572
Accrued revenue receivable                                             60,455           50,754            52,738
Excess cost over fair value of net assets acquired
  And core deposit premiums (net of accumulated
  Amortization: September 30, 1998 - $46,424;
  December 31, 1997 - $39,582;
  September 30, 1997 - $37,246)                                        64,444           67,796            70,180
Mortgage servicing rights                                              52,233           83,890            82,868
Real estate and other repossessed assets                                4,353            5,258             5,187
Other assets                                                           76,050           57,627            70,605
- --------------------------------------------------------------------------------------------------------------------
Total assets                                                   $    5,935,001   $    5,399,642    $    5,378,152
- --------------------------------------------------------------------------------------------------------------------

LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing demand deposits                            $      909,592   $      881,029    $      834,272
Interest-bearing deposits:
  Transaction                                                       1,165,398        1,124,288         1,098,404
  Savings                                                             108,003          106,900           106,536
  Time                                                              1,605,334        1,615,862         1,552,894
- --------------------------------------------------------------------------------------------------------------------
    Total deposits                                                  3,788,327        3,728,079         3,592,106
- --------------------------------------------------------------------------------------------------------------------
Funds purchased and repurchase
  Agreements                                                          817,840          631,815           735,868
Other borrowings                                                      609,579          394,087           400,044
Subordinated debenture                                                148,415          148,356            63,336
Accrued interest, taxes and expense                                    51,742           39,998            22,249
Other liabilities                                                      23,839           21,830           148,311
- --------------------------------------------------------------------------------------------------------------------
    Total liabilities                                               5,439,742        4,964,165         4,961,914
- --------------------------------------------------------------------------------------------------------------------
Stockholders' equity:
Preferred stock                                                            23               23                23
Common stock ($.00006 par value; 2,500,000,000
  Shares authorized; shares issued and outstanding 
  September 30, 1998- 22,071,759; December 31, 1997
  - 21,975,747; September 30, 1997 - 21,300,941)                           1                1                 1
Capital surplus                                                       211,552          208,327           179,498
Retained earnings                                                     273,004          218,629           229,574
Treasury stock (shares at cost: September 30, 1998 -
221,556;
  December 31, 1997 - 66,377;  September 30, 1997 - 58,614)            (9,674)          (2,190)           (1,866)
Unrealized gain (loss) on securities available for sale                20,353           10,691             9,013
Less notes receivable from exercise of stock options                        -               (4)               (5)
- --------------------------------------------------------------------------------------------------------------------
    Total shareholders' equity                                        495,259          435,477           416,238
- --------------------------------------------------------------------------------------------------------------------
Total liabilities and shareholders' equity                     $    5,935,001   $    5,399,642    $    5,378,152
- --------------------------------------------------------------------------------------------------------------------

See accompanying notes to consolidated financial statements.







- ----------------------------------------------------------------------------------------------------------------------
CONSOLIDATED STATEMENTS OF CHANGES IN
SHAREHOLDERS EQUITY
(In
Thousands)
                                                  Accumulated
                                                    Other
             Preferred Stock   Common     Stock Comprehensive           Retained Treasury  Stock          Notes
                                                               Capital
            ------------------------------------                                 --------------------
               Shares  Amount    Shares   Amount   Income     Surplus   Earnings   Shares   Amount    Receivable     Total
            -----------------------------------------------------------------------------------------------------------------
Balances at
                                                                                        
  December   250,102   $  23       21,149  $  1    $1,472  $176,093   $ 182,892      17    $ (428)     $  (87)     $ 359,966
31, 1996                                                                                
Comprehensive income:
  Net income       -       -            -     -         -         -      47,807       -         -           -         47,807
  Other Comprehensive
   Income, net of tax:
     Unrealized gains(loss)        
       on securities available
       for sale (1)-       -            -     -     7,541         -           -       -         -           -          7,541
                                                                                                                  -----------
   Comprehensive income                                                                                               55,348
                                                                                                                  -----------
Exercise of stock 
  options          -       -           90     -         -     1,681           -      42    (1,438)          -           243
Issuance of common stock 
  to Thrift Plan   -       -           11     -         -       418           -       -         -           -           418
Payments on stock
  option Notes 
  receivable       -       -            -     -         -         -           -       -         -          82            82
Preferred dividends
  paid in shares of
  common stock     -       -           45     -         -     1,125      (1,125)      -         -           -             -
Director retainer 
  shares           -       -            6     -         -       181           -       -         -           -           181
- -----------------------------------------------------------------------------------------------------------------------------
Balance at September 
  30, 1997   250,102   $  23       21,301   $ 1    $9,013  $179,498    $229,574      59    $(1,866)    $   (5)   $ 4162,238
- -----------------------------------------------------------------------------------------------------------------------------
Balances at December 31, 
  1997       250,000   $  23       21,976   $ 1   $10,691  $208,327    $218,629      66    $(2,190)    $   (4)   $  435,477
Comprehensive income:
   Net income     -        -            -     -         -        -       55,501       -          -          -        55,501
   Other Comprehensive
   Income, net of tax:
     Unrealized gains(loss)on 
     securities available 
     for sale(1)  -        -            -     -      9,662       -            -       -          -          -         9,662       
                                                                                                                  -----------
   Comprehensive income                                                                                              65,163
                                                                                                                  ----------- 
Exercise of stock 
  options         -        -           64     -          -   1,797            -       8       (346)         -         1,451
Issuance of common stock 
  to Thrift Plan  -        -            -     -          -      84            -     (23)       998          -         1,082
Payments on stock option 
  Notes receivable -       -            -     -          -       -            -       -          -           4            4
Preferred dividends 
  paid in shares
  of common stock  -       -           26     -          -    1,125      (1,125)      -          -           -            -
Preferred stock 
  dividend         -        -           -     -          -        -          (1)      -          -           -           (1)
Director retainer 
  shares           -        -           6     -          -      219           -       -          -           -          219
Treasury stock 
  purchase         -        -           -     -          -        -           -     171     (8,136)          -       (8,136)
- -----------------------------------------------------------------------------------------------------------------------------
Balances at September 
  30, 1998   250,000    $  23      22,072   $ 1   $ 20,353 $211,552    $273,004     222    $(9,674)      $   -    $ 495,259
- -----------------------------------------------------------------------------------------------------------------------------


(1)                                   Sept. 30, 1998     Sept. 30, 1997
                                      --------------     --------------
Reclassification adjustments:
  Unrealized losses on available        $     13,924        $    8,133
for sale securities
  Less:  reclassification
adjustment for gains realized                  4,262               592
            Included in net
income, net of tax
                                     --------------------------------------
Net unrealized losses on securities      $     9,662         $    7,541
                                     --------------------------------------

See accompanying notes to consolidated financial statements.





- --------------------------------------------------------------------------------------------------------------------
CONSOLIDATED STATEMENTS OF CASH FLOWS
(In Thousands Except Share Data)
                                                                   Nine Months Ended
                                                                     September 30,
                                                          --------------------------------------
                                                                 1998                1997
                                                          --------------------------------------
Cash Flow From Operating Activities:
                                                                                  
Net income                                                 $     55,501            $ 47,807
Adjustments to reconcile net income to net cash
  Provided by operating activities:
  Provision for loan and repossessed real estate losses          10,424              5,526
  Depreciation and amortization                                  28,821             22,915
  Provision for impairment of mortgage servicing rights           2,000                  -
  Net amortization of  security discounts and premiums              323              2,471
  Contribution of stock to Bank of Oklahoma Foundation            2,257                  -
  Net gain on sale of assets                                    (16,637)            (6,373)
  Mortgage loans originated for resale                         (660,097)          (629,515)
  Proceeds from sale of mortgage loans held for resale          664,466            623,733
  (Increase) decrease in trading securities                     (17,731)             3,899
  Increase in accrued revenue receivable                         (9,700)            (1,101)
  Increase in other assets                                       (4,674)            (6,237)
  Increase in accrued interest, taxes and expense                 5,733             11,434
  Increase in other liabilities                                   6,085              3,404
- ------------------------------------------------------------------------------------------------
Net cash provided by operating activities                        66,771             77,963
- ------------------------------------------------------------------------------------------------
Cash Flow From Investing Activities:
  Proceeds from maturities of investment securities              27,816             19,719
  Proceeds from maturities of available for sale securities     375,108            175,812
  Purchases of investment securities                            (36,941)           (36,038)
  Purchases of available for sale securities                 (1,822,456)          (895,237)
  Proceeds from sales of available for sale securities        1,235,152            623,003
   Proceeds from hedging mortgage servicing rights               21,974                  -
  Loans originated or acquired net or principal collected      (355,777)          (233,098)
  Proceeds from disposition of assets                            61,821              9,943
  Purchases of assets                                           (42,523)           (58,107)
  Cash and cash equivalents of branches & subsidiaries
    Acquired and sold, net                                       35,793             (1,240)
- ------------------------------------------------------------------------------------------------
  Net cash used by investing activities                        (500,033)          (395,243)
- ------------------------------------------------------------------------------------------------
Cash Flows From Financing Activities:
  Net increase in demand deposits, transaction
    Deposits, money market deposits, and savings accounts        61,309             53,321
  Net decrease in certificates of deposit                       (31,390)           (63,560)
  Net increase in other borrowings                              401,517            189,318
  Issuance of subordinated debenture                                  -            168,311
  Payment on subordinated debenture                                   -            (20,000)
  Purchase of treasury stock                                     (8,482)                 -
  Preferred stock dividend                                            -                  -
  Issuance of preferred, common and treasury stock, net           3,098                842
  Payments on stock option notes receivable                           4                 82
- ------------------------------------------------------------------------------------------------
Net cash provided by financing activities                       426,055            328,314
- ------------------------------------------------------------------------------------------------
Net increase (decrease) in cash and cash equivalents             (7,207)            11,034
Cash and cash equivalents at beginning of period                389,326            367,551
- ------------------------------------------------------------------------------------------------
Cash and cash equivalents at end of period                 $    382,119      $     378,585
- ------------------------------------------------------------------------------------------------

Cash paid for interest                                     $    122,690      $     136,631
- ------------------------------------------------------------------------------------------------
Cash paid for taxes                                        $     13,825      $      14,988
- ------------------------------------------------------------------------------------------------
Net loans transferred to repossessed real estate
    And other assets                                       $      2,141      $       1,702
- ------------------------------------------------------------------------------------------------
Payment of preferred stock dividends in common stock       $      1,125      $       1,125
- ------------------------------------------------------------------------------------------------

See accompanying notes to consolidated financial statements






NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1) ACCOUNTING POLICIES

Basis of Presentation

The accounting and reporting  policies of BOK Financial  Corporation  conform to
generally  accepted  accounting  principles and to generally  accepted practices
within the  banking  industry.  The  Consolidated  Financial  Statements  of BOK
Financial include the accounts of BOK Financial and its subsidiaries,  primarily
Bank of Oklahoma,  N.A. ("BOk"), Bank of Arkansas N.A., and Bank of Texas, N.A..
Certain prior period balances have been reclassified to conform with the current
period presentation.

Hedging of Mortgage Servicing Rights

BOK Financial enters into futures  contracts and call and put options on futures
contracts to hedge against the risk of loss on mortgage  servicing rights due to
accelerated loan prepayments during periods of falling interest rates. Contracts
on underlying  securities  which are expected to have a similar  duration to the
mortgage servicing portfolio,  such as 10-year U.S. Treasury notes, are used for
these hedges. The combination of contracts selected is based upon an analysis of
the  expected  range of market value  changes over a probable  range of interest
rates to achieve a high degree of correlation  between changes in the fair value
of the  mortgage  servicing  rights  and  changes  in the  market  value  of the
contracts.  These  contracts  are  designated  as  hedges  on  the  trade  date.
Transaction fees are charged to expense as mortgage banking costs when incurred.
Premiums paid or received on option contracts are deferred and amortized against
mortgage  banking  costs  over  the life of the  options.  Both  unrealized  and
realized gains and losses on futures contracts and option contracts are deferred
as part of the capitalized  mortgage servicing rights.  These deferred gains and
losses  are  amortized  over  the life of the loan  servicing  portfolio.  These
unamortized  deferred  gains  and  losses  are  included  with  the  cost of the
servicing  rights when  determining  whether an allowance for  impairment of the
servicing  rights is required.  Changes in the fair value of the  contracts  and
changes in the market  value of the  mortgage  servicing  rights is  reviewed at
least  monthly to  determine  whether a high degree of  correlation  exists on a
statistically  value basis.  If correlation  criteria are not met, the contracts
are no  longer  accounted  for a hedge.  In such  circumstances,  any  remaining
unamortized deferred gains or losses are recognized in current income.

During 1997, the Financial  Accounting Standards Board issued Statement No. 131,
"Disclosures  about  Segments of an Enterprise  and Related  Information"  ("FAS
131")  which  established   standards  for  the  way  public  businesses  report
information about operating segments.  It also established standards for related
disclosures  about products and services,  geographic areas and major customers.
FAS 131 is effective for financial  statements for fiscal years  beginning after
December 15, 1997 and BOK Financial  will comply  beginning  with year-end 1998.
Disclosures of operating segment and related  information for interim periods of
1998 will be required beginning with the first quarter of 1999. BOK Financial is
in the  process  of  evaluating  these  disclosure  requirements.  However,  the
adoption  of FAS  131  will  have  no  impact  on the  consolidated  results  of
operations, financial position or cash flows.

During 1998, the Financial  Accounting Standards Board issued Statement No. 133,
"Accounting  for Derivative  Instruments  and Hedging  Activities"  ("FAS 133").
Among other things, FAS 133 requires that all derivative  instruments be carried
on the statement of financial  position at fair value.  Changes in fair value of
the  derivative  instruments  will either be reported in income or as a separate
component of other  comprehensive  income  (shareholders'  equity)  depending on
whether  the  derivative   instrument  meets  certain   requirements  for  hedge
accounting. FAS 133 eliminates the current practice of deferral hedge accounting
where  gains or losses  on  derivative  instruments  designated  as  hedges  are
considered  adjustments  to the carrying value of the hedged asset or liability.
FAS 133 is  effective  for fiscal  years  beginning  after June 15, 1999 and BOK
Financial expects to adopt the standard as of January 1, 2000. BOK Financial has
not yet  determined  what  the  effect  of FAS 133  will be on its  earnings  or
financial position.



(2) MORTGAGE BANKING ACTIVITIES

At September 30, 1998,  BOk owned the rights to service  88,180  mortgage  loans
with  outstanding  principal  balances of $6.7 billion,  including  $146 million
serviced for BOk. The weighted  average  interest  rate and  remaining  term was
7.62% and 281 months, respectively.

Activity  in  capitalized   mortgage  servicing  rights  and  related  valuation
allowance during the nine months ending September 30, 1998 is as follows:

                                     Capitalized Mortgage Servicing Rights
                           -----------------------------------------------------
                                                            Valuation
                            Purchased Originated    Total   Allowance      Net
                           ---------------------- ---------- --------- ---------
Balance at
    December 31, 1997      $  78,961  $   9,929   $  88,890  $(5,000) $  83,890
Additions                      1,788     10,167      11,955        -     11,955
Amortization expense         (10,756)    (1,924)    (12,680)       -    (12,680)
Deferred gain (loss) on MSR
   hedging  portfolio              -          -     (28,932)       -    (28,932)
Provision for impairment           -          -               (2,000)    (2,000)
Impairment charge-off         (2,710)         -      (2,710)   2,710          -
- ------------------------------------------------- ------------------- ----------
Balance at  Sept. 30, 1998 $  67,283  $  18,172   $  56,523  $(4,290) $  52,233
- ------------------------------------------------- ------------------- ----------
Estimated fair value of
    mortgage servicing
    rights (1)             $  57,790  $  19,875   $  94,238        -  $  77,665
- ------------------------------------------------- ------------------- ----------
(1)    Excludes  approximately $8.3 million of loan servicing rights on mortgage
       loans originated prior to the adoption of FAS 122.


(3) DISPOSAL OF AVAILABLE FOR SALE SECURITIES

Sales of available for sale securities for the nine months ending  September 30,
1998 resulted in gains and losses as follows (in thousands):

        Proceeds                           $1,235,152
        Gross realized gains                    7,350
        Gross realized losses                     980
        Related federal and state
           income tax expense                   2,108



 (4) 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          Nine Months Ended
                                                     --------------------------- --------------------------
                                                       Sept. 30,    Sept. 30,      Sept. 30,   Sept. 30,
                                                         1998         1997           1998         1997
                                                     --------------------------- --------------------------
Numerator:
                                                                                           
   Net income                                        $    18,750   $   16,396    $    55,501  $     47,807
   Preferred stock dividends                                (375)        (375)        (1,125)       (1,125)
- -----------------------------------------------------------------------------------------------------------
Numerator for basic earnings per share - income
   available to common stockholders                       18,375       16,021         54,376        46,682
- -----------------------------------------------------------------------------------------------------------
Effect of dilutive securities:
   Preferred stock dividends                                 375          375          1,125         1,125
- -----------------------------------------------------------------------------------------------------------
Numerator for diluted earnings per share - income
available
   to common stockholders after assumed conversion   $    18,750  $    16,396    $    55,501  $     47,807
- -----------------------------------------------------------------------------------------------------------
Denominator:
   Denominator for basic earnings per share -weighted
     average shares                                   21,862,010   21,906,321     21,897,677    21,882,733
   Effect of dilutive securities:
     Employee stock options                              330,481      295,202        354,931       251,938
     Convertible preferred stock                       2,898,186    2,898,186      2,898,186     2,898,186
- -----------------------------------------------------------------------------------------------------------
Dilutive potential common shares                       3,228,667    3,193,388      3,253,117     3,150,124
- -----------------------------------------------------------------------------------------------------------
Denominator for diluted earnings per share - adjusted
   weighted average shares and assumed conversions    25,090,677   25,099,709     25,150,794    25,032,857
- -----------------------------------------------------------------------------------------------------------
Basic earnings per share                                $   0.84      $  0.73         $ 2.48        $ 2.13
- -----------------------------------------------------------------------------------------------------------
- -----------------------------------------------------------------------------------------------------------
Diluted earnings per share                               $  0.75      $  0.65         $ 2.21        $ 1.91
- -----------------------------------------------------------------------------------------------------------



(5)  COMPREHENSIVE INCOME

As  of  January  1,  1998,  BOK  Financial  adopted  Statement  130,   Reporting
Comprehensive Income.  Statement 130 establishes new rules for the reporting and
display of  comprehensive  income and its components;  however,  the adoption of
this  Statement  had no  impact on the  Company's  net  income or  shareholders'
equity.  Statement 130 requires unrealized gains or losses on available for sale
securities  be  included in other  comprehensive  income.  Prior year  financial
statements have been  reclassified  to conform to the  requirements of Statement
130. The components of  comprehensive  income are disclosed in the  Consolidated
Statement of Changes in Shareholders' Equity.


(6)  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.





- ----------------------------------------------------------------------------------------------------------------------------------
NINE MONTH FINANCIAL SUMMARY - UNAUDITED
Consolidated Daily Average Balances, Average Yields and Rates
(In Thousands Except Share Data)
                                                                            For Nine months ended
                                         -----------------------------------------------------------------------------------------
                                                       September 30, 1998                           September 30, 1997
                                         --------------------------------------------     ----------------------------------------
                                              Average          Revenue/     Yield          Average          Revenue/      Yield
                                              Balance         Expense(1)    /Rate          Balance         Expense(1)     /Rate
                                         -----------------------------------------------------------------------------------------
Assets
                                                                                                          
  Taxable securities                      $    1,722,320   $    79,653        6.18%   $    1,559,891    $    72,714       6.23%
  Tax-exempt securities(1)                       324,668        18,634        7.67           348,264         19,766       7.59
- ----------------------------------------------------------------------------------------------------------------------------------
    Total securities                           2,046,988        98,287        6.42         1,908,155         92,480       6.48
- ----------------------------------------------------------------------------------------------------------------------------------
  Trading securities                              20,248           813        5.37             4,307            193       5.99
  Funds sold                                      36,609         1,595        5.83            52,556          2,268       5.77
  Loans(2)(3)                                  2,879,995       190,313        8.68         2,542,871        166,360       8.75
     Less reserve for loan losses                 56,823                                      49,049
- ----------------------------------------------------------------------------------------------------------------------------------
  Loans, net of reserve(3)                     2,823,172       190,313        8.86%        2,493,822        166,359       8.92
- ----------------------------------------------------------------------------------------------------------------------------------
    Total earning assets(3)                    4,927,017       291,008        7.81%        4,458,840        261,301       7.84
- ----------------------------------------------------------------------------------------------------------------------------------
  Cash and other assets                          637,804                                     566,612
- ----------------------------------------------------------------------------------------------------------------------------------
        Total assets                      $    5,564,821                              $    5,025,452
- ----------------------------------------------------------------------------------------------------------------------------------

Liabilities And Shareholders' Equity
  Transaction deposits                    $    1,172,736 $      27,459        3.13%   $    1,029,834         24,625       3.20
  Savings deposits                               109,890         1,765        2.15           107,015          1,771       2.21
  Other time deposits                          1,700,116        69,959        5.50         1,558,068         64,547       5.54
- ----------------------------------------------------------------------------------------------------------------------------------
     Total interest-bearing  deposits          2,982,742        99,183        4.45         2,694,917         90,943       4.51
- ----------------------------------------------------------------------------------------------------------------------------------
  Other borrowings                             1,026,317        44,194        5.76         1,101,228         47,571       5.78
  Subordinated debenture                         148,392         7,360        6.63            36,102          1,727       6.40
- ----------------------------------------------------------------------------------------------------------------------------------
     Total interest-bearing  liabilities       4,157,451       150,737        4.85         3,832,247        140,241       4.89
- ----------------------------------------------------------------------------------------------------------------------------------
  Demand deposits                                886,129                                     742,409
  Other liabilities                               64,254                                      69,210
  Shareholders' equity                           456,987                                     381,586
- ----------------------------------------------------------------------------------------------------------------------------------
    Total liabilities and                 $    5,564,821                              $    5,025,452
shareholders' equity
- ----------------------------------------------------------------------------------------------------------------------------------
   Tax-Equivalent Net Interest                                 140,271        2.96                          121,060       2.95
Revenue(1)(3)
  Tax-Equivalent Net Interest Revenue (1)
     To Earning Assets(3)                                                     3.72                                        3.63
     Less tax-equivalent adjustment(1)                           6,995                                        7,172
- ----------------------------------------------------------------------------------------------------------------------------------
Net Interest Revenue                                           133,276                                      113,888
Provision for loan losses                                       10,424                                        5,526
Other operating revenue                                        128,002                                       96,178
Other operating expense                                        167,834                                      133,889
- ----------------------------------------------------------------------------------------------------------------------------------
Income Before Taxes                                             83,020                                       70,651
Federal and state income tax                                    27,519                                       22,844
- ----------------------------------------------------------------------------------------------------------------------------------
Net Income                                                 $    55,501                                  $    47,807
- ----------------------------------------------------------------------------------------------------------------------------------
Earnings Per Share:
  Net Income
    Basic                                                  $       2.48                                 $      2.13
- ----------------------------------------------------------------------------------------------------------------------------------
    Diluted                                                $       2.21                                 $      1.91
- ----------------------------------------------------------------------------------------------------------------------------------


(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/Rate excludes
     $3.3 million of non-recurring collection of foregone interest in 1998.




- ------------------------------------------------------------------------------------------------------------------------------
QUARTERLY FINANCIAL SUMMARY - UNAUDITED
Consolidated Daily Average Balances, Average Yields and Rates
(In Thousands Except Share Data)
                                                                         For Three months ended
                                        --------------------------------------------------------------------------------------
                                                     September 30, 1998                             June 30, 1998
                                        -------------------------------------------     --------------------------------------
                                             Average         Revenue/     Yield         Average         Revenue/     Yield
                                             Balance        Expense(1)    /Rate         Balance        Expense(1)    /Rate
                                        --------------------------------------------------------------------------------------
Assets
                                                                                                        
  Taxable securities                     $   1,751,428   $    27,300        6.18%   $    1,642,799  $    25,119         6.13%
  Tax-exempt securities(1)                     325,413         6,212        7.57           321,703        6,173         7.70
- ------------------------------------------------------------------------------------------------------------------------------
    Total securities                         2,076,841        33,512        6.40         1,964,502       31,292         6.39
- ------------------------------------------------------------------------------------------------------------------------------
  Trading securities                            27,389           389        5.63            21,408          262         4.91
  Funds sold                                    25,287           333        5.22            37,728          571         6.07
  Loans(2)(3)                                2,978,087        66,503        8.62         2,838,037       63,072         8.71
    Less reserve for loan losses                59,821                                      56,423                            
- ------------------------------------------------------------------------------------------------------------------------------
  Loans, net of reserve(3)                   2,918,266        66,503        8.80         2,781,614       63,072         8.88
- ------------------------------------------------------------------------------------------------------------------------------
    Total earning assets(3)                  5,047,783       100,737        7.78         4,805,252       95,197         7.82
- ------------------------------------------------------------------------------------------------------------------------------
  Cash and other assets                        647,741                                     643,626
- ------------------------------------------------------------------------------------------------------------------------------
        Total assets                     $   5,695,524                              $    5,448,878
- ------------------------------------------------------------------------------------------------------------------------------

Liabilities And Shareholders' Equity
  Transaction deposits                   $   1,187,685         9,273        3.10%   $    1,184,835        9,268         3.14%
  Savings deposits                             108,911           547        1.99           111,207          617         2.23
  Other time deposits                        1,643,596        22,455        5.42         1,717,993       23,640         5.52
- ------------------------------------------------------------------------------------------------------------------------------
     Total interest-bearing deposits         2,940,192        32,275        4.36         3,014,035       33,525         4.46
- ------------------------------------------------------------------------------------------------------------------------------
  Other borrowings                           1,152,503        16,830        5.79           873,616       12,406         5.70
  Subordinated debenture                       148,392         2,529        6.76           148,410        2,464        6.66
- ------------------------------------------------------------------------------------------------------------------------------
     Total interest-bearing liabilities      4,241,087        51,634        4.83         4,036,061       48,395         4.81
- ------------------------------------------------------------------------------------------------------------------------------
  Demand deposits                              904,128                                     895,415
  Other liabilities                             78,383                                      61,814
  Shareholders' equity                         471,926                                     455,588
- ------------------------------------------------------------------------------------------------------------------------------
  Total liabilities and shareholders' 
    Equity                               $   5,695,524                              $    5,448,878
- ------------------------------------------------------------------------------------------------------------------------------
  Tax-Equivalent Net Interest Revenue (1)(3)                  49,103        2.95%                        46,802          3.01
  Tax-Equivalent Net Interest  Revenue (1)
     To Earning Assets                                                      3.72                                       3.78
   Less tax-equivalent adjustment (1)(3)                       2,326                                      2,338
- ------------------------------------------------------------------------------------------------------------------------------
Net Interest Revenue                                          46,777                                     44,464
Provision for loan losses                                      4,001                                      3,953
Other operating revenue                                       42,860                                     44,355
Other operating expense                                       56,837                                     53,804
- ------------------------------------------------------------------------------------------------------------------------------
Income Before Taxes                                           28,799                                     31,062
Federal and state income tax                                  10,049                                     10,624
- ------------------------------------------------------------------------------------------------------------------------------
Net Income                                               $    18,750                                $    20,438
- ------------------------------------------------------------------------------------------------------------------------------
Earnings Per Share:
  Net Income
    Basic                                                $      0.84                                $      0.92
- ------------------------------------------------------------------------------------------------------------------------------
    Diluted                                              $      0.75                                $      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  include loans on which the accrual of interest has been
     discontinued and are stated net of unearned income. (3) Yield/Rate excludes
     $1.8  million  and $1.5  million of  non-recurring  collection  of foregone
     interest in September 30, 1998 and June 30, 1998, respectively.





- ------------------------------------------------------------------------------------------------------------------------
                                          For Three months ended
- ------------------------------------------------------------------------------------------------------------------------
               March 31, 1998                        December 31, 1997                      September 30, 1997
- ------------------------------------------------------------------------------------------------------------------------
      Average      Revenue/     Yield        Average        Revenue/     Yield          Average    Revenue/    Yield
      Balance     Expense(1)    /Rate        Balance       Expense(1)    /Rate          Balance   Expense(1)   /Rate
- ------------------------------------------------------------------------------------------------------------------------

                                                                                                   
  $    1,772,971$    27,235       6.20%  $    1,562,445  $    24,408       6.20%  $    1,560,418$    24,354        6.19%
         328,735      6,248        7.97         331,793        6,666        7.97         360,461      6,764        7.44
- ------------------------------------------------------------------------------------------------------------------------
       2,101,706     33,483        6.51       1,894,238       31,074        6.51       1,920,879     31,118        6.43
- ------------------------------------------------------------------------------------------------------------------------
          11,774        163        5.95           6,203           93        5.95           3,583         53        5.87
          47,050        691        5.32          53,964          724        5.32          49,645        740        5.91
       2,822,147     60,737        8.74       2,764,436       60,924        8.74       2,676,237     59,063        8.76
          54,164                  -              53,180                    -              51,165                 -
                          -                                        -                                      -
- ------------------------------------------------------------------------------------------------------------------------
       2,767,983     60,737        8.92       2,711,256       60,924        8.92       2,625,072     59,063        8.93
- ------------------------------------------------------------------------------------------------------------------------
       4,928,513     95,074        7.89       4,665,661       92,815        7.89       4,599,179     90,974        7.85
- ------------------------------------------------------------------------------------------------------------------------
         625,863                                618,039                                  590,260
- ------------------------------------------------------------------------------------------------------------------------
  $    5,554,376                         $    5,283,700                           $    5,189,439
- ------------------------------------------------------------------------------------------------------------------------


  $    1,145,221      8,917        3.05  $    1,102,144        8,466        3.05  $    1,067,895      8,290        3.08
         109,560        602        2.23         106,207          596        2.23         108,104        603        2.21
       1,739,816     23,864        5.52       1,582,538       22,037        5.52       1,533,191     21,489        5.56
- ------------------------------------------------------------------------------------------------------------------------
       2,994,597     33,383        4.42       2,790,889       31,099        4.42       2,709,190     30,382        4.45
- ------------------------------------------------------------------------------------------------------------------------
       1,051,724     14,958        5.73       1,050,545       15,169        5.73       1,159,005     17,203        5.89
         148,374      2,367       6.52          148,334        2,439       6.52           81,395      1,305      6.36
- ------------------------------------------------------------------------------------------------------------------------
       4,194,695     50,708        4.84       3,989,768       48,707        4.84       3,949,590     48,890        4.91
- ------------------------------------------------------------------------------------------------------------------------
         858,340                                783,508                                  761,578
          57,095                                 80,763                                   75,732
         444,246                                429,661                                  402,539
- ------------------------------------------------------------------------------------------------------------------------
  $    5,554,376                         $    5,283,700                           $    5,189,439
- ------------------------------------------------------------------------------------------------------------------------
                      44,366      3.05                        44,108        3.05                     42,084        2.94

                                  3.75                                      3.75                                   3.63
                      2,330                                    2,396                                  2,426
- ------------------------------------------------------------------------------------------------------------------------
                     42,036                                   41,712                                 39,658
                      2,470                                    3,500                                  3,000
                     40,787                                   33,521                                 34,315
                     57,193                                   61,277                                 46,720
- ------------------------------------------------------------------------------------------------------------------------
                     23,160                                   10,456                                 24,253
                      6,847                                   (6,362)                                 7,857
- ------------------------------------------------------------------------------------------------------------------------
                $    16,313                              $    16,818                            $    16,396
- ------------------------------------------------------------------------------------------------------------------------


                $      0.73                              $      0.75                            $      0.73
- ------------------------------------------------------------------------------------------------------------------------
                $      0.65                              $      0.67                            $      0.65
- ------------------------------------------------------------------------------------------------------------------------





PART II. Other Information

      Item 6. Exhibits and Reports on Form 8-K (A) Exhibits:
               No. 27   Financial Data Schedule filed herewith electronically.

           (B) Reports on Form 8-K:
               No reports on Form 8-K were filed  during the three  months ended
September 30, 1998.



                                   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:   November 16, 1998                   /s/ James A. White
        -----------------                   ------------------
                                            James A. White
                                            Executive Vice President and
                                            Chief Financial Officer