BOK FINANCIAL CORP ET AL
10-Q, 1998-05-15
NATIONAL COMMERCIAL BANKS
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      As filed with the Securities and Exchange Commission on May 15, 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 March 31, 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: 21,886,347 shares of
common stock ($.00006 par value) as of April 30, 1998.

- --------------------------------------------------------------------------------
<PAGE>2







                            BOK Financial Corporation
                                    Form 10-Q
                          Quarter Ended March 31, 1998

                                      Index

Part I.  Financial Information
      Management's Discussion and Analysis
            of Financial Condition and
            Results of Operations                                       2
      Report of Management on Consolidated
            Financial Statements                                       10
      Consolidated Statements of Earnings                              11
      Consolidated Balance Sheets                                      12
      Consolidated Statements of Changes
            in Shareholders' Equity                                    13
      Consolidated Statements of Cash Flows                            14
      Notes to Consolidated Financial Statements                       15
      Financial Summaries - Unaudited                                  17

Part II.  Other Information
      Item 6. Exhibits and Reports on Form 8-K                         19

Signature                                                              19


MANAGEMENT'S DISCUSSION AND ANALYSIS

HIGHLIGHTS

BOK Financial Corporation ("BOK Financial") recorded net income of $16.3 million
or $0.65 per  diluted  common  share for the first  quarter of 1998  compared to
$15.3  million or $0.61 per diluted  common share for the first quarter of 1997.
Returns on  average  assets and  equity  were  1.19% and  14.89%,  respectively,
compared  to  returns  on  average  assets  and  equity  of  1.30%  and  16.92%,
respectively, for the first quarter of 1997.

The increase in net income for the first quarter of 1998 was due to increases of
$7.0  million or 19.9% in net  interest  revenue  and $10.3  million or 33.9% in
other operating  revenue.  These increases were partially offset by increases of
$15.5  million or 37.1% in operating  expenses and $1.4 million in provision for
loan losses.  Operating  expenses for the first  quarter of 1998 included a $3.0
million  provision for impairment of BOK Financial's  mortgage  servicing rights
and $2.3 million for the cost of securities  contributed to the Bank of Oklahoma
Foundation.


RESULTS OF OPERATIONS

Net interest revenue on a  tax-equivalent  basis was $44.4 million for the first
quarter of 1998  compared  to $37.5  million for the first  quarter of 1997,  an
increase of $6.9  million or 18.4%.  Average  earning  assets  increased by $683
million,  including  increases  in average  loans of $408  million  and  average
securities of $278 million. Interest bearing liabilities increased $541 million,
primarily due to increases in time deposits of $175 million and interest bearing
transaction accounts of $157 million.  Demand deposits and shareholders' equity,
which are additional sources of funding asset growth, increased $170 million and
$76 million, respectively. The growth in average earning assets in excess of the
growth in interest bearing liabilities  contributed $6.3 million to the increase
in net interest revenue.

<PAGE>3

================================================================================
TABLE 1 - VOLUME/RATE ANALYSIS
(In thousands)

                                              Three months ended
                                             March 31, 1998/1997
                                     -------------------------------------
                                                      Change Due To (1)
                                                  ------------------------
                                                                Yield
                                       Change       Volume      /Rate
                                     -------------------------------------
Tax-equivalent interest revenue:
  Securities                           $  4,487    $  4,243    $     244
  Trading securities                        105         116          (11)
  Loans                                   9,291       8,736          555
  Funds sold                                (20)        (56)          36
- --------------------------------------------------------------------------
Total                                    13,863      13,039          824
- --------------------------------------------------------------------------
Interest expense:
  Interest bearing transaction              930       1,247         (317)
deposits
  Savings deposits                           38          33            5
  Time deposits                           2,431       2,394           37
  Other borrowings                        1,290         851          439
  Subordinated debenture                  2,271       2,258           13
- --------------------------------------------------------------------------
Total                                     6,960       6,783          177
- --------------------------------------------------------------------------
  Tax-equivalent net interest             6,903    $  6,256     $    647
revenue
 Change in tax-equivalent adjustment         71
- --------------------------------------------------------------------------
Net interest revenue                 $    6,974
- --------------------------------------------------------------------------
(1) Changes  attributable  to both volume and yield are allocated to both volume
and yield/rate on an equal basis.

Since inception,  BOK Financial has completed  acquisitions which were accounted
for under the purchase  method of  accounting.  The purchase  method  results in
recording goodwill and other identifiable  intangible assets which are amortized
as noncash charges into operating  expense in future years.  This is in contrast
to the pooling of interest  method of  accounting,  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)
                                                -------------------------------
                                                       Three months ended
                                                -------------------------------
                                                  March 31,       March 31,
                                                     1998            1997
                                                --------------- ---------------
  Net income                                    $     16,313    $     15,347
  After-tax impact of amortization 
    of intangible assets                               2,072           1,524
- --------------------------------------------------------------- ---------------
  Tangible net income                           $     18,385    $     16,871
- --------------------------------------------------------------- ---------------
  Tangible net income per diluted share         $         0.73  $         0.68
- --------------------------------------------------------------- ---------------
  Average tangible shareholders' equity         $   377,114     $   318,422
  Return on tangible shareholders' equity             19.77%          21.49%
- --------------------------------------------------------------- ---------------
  Average tangible assets                        $5,487,243      $4,728,769
  Return on tangible assets                            1.36%           1.45%
- --------------------------------------------------------------- ---------------

Net  interest  margin,  the ratio of net  interest  revenue to  average  earning
assets,  was 3.65% for the first quarter of 1998 compared to 3.58% for the first
quarter of 1997.  This  increase  was due  primarily  to a 12 basis  point yield
improvement on loans.  Commercial and commercial  real estate loans increased to
72% of the total loan  portfolio  for the first  quarter of 1998 compared to 69%
for the first quarter of 1997 while residential  mortgage loans decreased to 10%
of total loans from 12% for the same periods.  This change in the composition of
the loan  portfolio  caused the overall yield to increase  since  commercial and
commercial  real estate loans  generally  have a higher  yield than  residential
mortgage  loans.  The increase in yield on average  earning assets was partially
offset by a 5 basis  point  increase  in the cost of  average  interest  bearing
liabilities.  The composition of interest bearing

<PAGE>4

liabilities  shifted toward a greater  percentage of borrowed funds in the first
quarter  of  1998  compared  to  the  first  quarter  of  1997.   Most  notably,
subordinated  debt, which had a 6.36% cost of funds represented 3.5% of interest
bearing  liabilities for the first quarter of 1998 compared to 0.2% for the same
period of 1997.

Since  inception,  BOK  Financial  has  generally  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 first quarter of 1998, this strategy
resulted in a 41 basis point  decrease in net  interest  margin.  However,  this
strategy  contributed  $2.9  million  to net  interest  revenue.  As more  fully
discussed in the Market Risk  section,  management  employs  various  techniques
designed  to control,  within  established  parameters,  the  interest  rate and
liquidity risk inherent in this strategy.

 Other operating  revenue  increased $10.3 million or 33.9% compared to the same
quarter  of 1997.  Total  fees and  commissions,  which  are  included  in other
operating revenue, increased $7.8 million or 26.7%. All categories of fee income
showed increases over the first quarter of 1997. Most notably,  mortgage banking
revenue  increased  $2.4  million  due to a $1.5  million  increase  in mortgage
servicing  fees and an $845  thousand  increase in secondary  marketing  income.
Loans serviced by BOK Mortgage, a division of BOk, totaled $7.0 billion at March
31, 1998.  Additionally,  trust fees and transaction card revenue increased $1.6
million and $1.5 million,  respectively.  Other operating  revenue also included
gains on student loans of $1.4 million for the first quarter of 1998 compared to
$1.1  million  for  the  first  quarter  of  1997,  and a $2.5  million  gain on
securities sales in the first quarter of 1998.

<TABLE>
=========================================================================================================================
TABLE 3 - OTHER OPERATING REVENUE
(In thousands)

                                                                        Three Months Ended
                                          -------------------------------------------------------------------------------
                                              March 31,       Dec. 31,        Sept. 30,        June 30,       March 31,
                                                1998            1997            1997             1997            1997
                                          -------------------------------------------------------------------------------
<S>                                        <C>             <C>             <C>              <C>             <C>        
Brokerage and trading revenue              $    3,131      $    2,565      $    2,522       $    2,229      $     2,240
Transaction card revenue                        5,540           4,828           5,770            4,742            3,999
Trust fees and commissions                      6,884           6,528           6,405            5,851            5,278
Service charges and fees
  on deposit accounts                           7,638           7,570           7,255            7,112            6,714
Mortgage banking revenue                        9,321           9,411           8,416            7,460            6,948
Leasing revenue                                 1,661           1,522           1,566            1,512            1,261
Other revenue                                   2,685           3,198           1,546            2,614            2,655
- -------------------------------------------------------------------------------------------------------------------------
  Total fees and commissions                   36,860          35,622          33,480           31,520           29,095
- -------------------------------------------------------------------------------------------------------------------------
Gain on student loan sales                      1,415              99              26               91            1,095
Gain (loss) on securities                       2,512          (2,200)            809             (200)             262
- -------------------------------------------------------------------------------------------------------------------------
  Total other operating revenue            $   40,787      $   33,521      $   34,315       $   31,411      $    30,452
==========================================================================================================================
</TABLE>

Other  operating  expenses for the first quarter of 1998 increased $15.5 million
or 37.1% compared to the first quarter of 1997.  Notable large or  non-recurring
expenses  affected  the first  quarter  of 1998,  including  business  promotion
expenses for the contribution of stock with a cost of $2.3 million (market value
at the time of donation was $5.0 million) to the Bank of Oklahoma Foundation and
a provision of $3.0 million for impairment of mortgage  servicing  rights due to
falling  interest  rates.  Excluding  these items and  excluding net OREO gains,
operating expenses increased $9.9 million or 23.4%.

Personnel  costs  increased  $5.5  million  due to  increased  staffing,  normal
compensation  increases  and  increased  incentive  compensation.  Staffing on a
full-time  equivalent  ("FTE") basis  increased by 243  employees  while average
compensation  per FTE increased by 9.8%.  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  increased  $1.2 million to $2.6 million for
the quarter.

Net occupancy, equipment and data processing expenses increased $894 thousand or
10.7% due  primarily to a $796 thousand  increase in data  processing  costs.  A
significant  portion of BOK  Financial's  data processing is outsourced to third
party  providers.  The cost of these services are directly related to the volume
of  transactions

<PAGE>5

processed.  Mortgage  banking  costs  increased  $1.8  million  or 42.8%  due to
increased  amortization of capitalized  servicing rights and a greater volume of
loan originations.

<TABLE>
=====================================================================================================================
TABLE 4 - OTHER OPERATING EXPENSE
(In thousands)

                                                                       Three Months Ended
                                  -----------------------------------------------------------------------------------
                                      March 31,       Dec. 31,        Sept. 30,        June 30,         March 31,
                                        1998            1997            1997             1997              1997
                                  -----------------------------------------------------------------------------------
<S>                                <C>            <C>             <C>              <C>              <C>         
Personnel                          $    24,829    $     24,811    $    22,475      $     21,148     $     19,294
Business promotion                       1,897           2,450          2,067             2,190            1,950
Contribution of stock to BOK
   Charitable Foundation                 2,257           3,638              -                 -                -
Professional fees/services               1,596           2,123          1,579             1,571            1,496
Net occupancy, equipment
  and data processing                    9,214          10,426          8,618             8,250            8,320
FDIC and other insurance                   310             258            374               328              333
Printing, postage and supplies           2,047           2,220          1,817             1,921            1,825
Net gains and operating
  expenses on repossessed assets           (55)         (1,553)        (1,662)             (222)            (412)
Amortization of intangible
  assets                                 2,302           2,336          2,362             2,398            1,728
Mortgage banking costs                   6,023           6,137          5,202             4,412            4,217
Provision for impairment of
   mortgage servicing rights             3,000           4,100              -                 -                -
Other expense                            3,773           4,331          3,888             3,447            2,975
- ---------------------------------------------------------------------------------------------------------------------
  Total                            $    57,193    $     61,277    $    46,720      $     45,443     $     41,726
=====================================================================================================================
</TABLE>

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 62.9% for the first quarter
of 1998 compared to 62.3% for the first quarter of 1997.

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

                                                                    Three Months Ended
                                      -------------------------------------------------------------------------------
                                           March 31,      Dec. 31,       Sept. 30,       June 30,        March 31,
                                             1998           1997            1997           1997            1997
                                      -------------------------------------------------------------------------------

<S>                                    <C>            <C>             <C>             <C>            <C>         
Total other operating expense          $    57,193    $    61,277     $    46,720     $    45,443    $     41,726
Contribution of stock to BOk
  Charitable Foundation                     (2,257)        (3,638)              -               -               -
Provision for impairment of mortgage
  servicing rights                          (3,000)        (4,100)              -               -               -
Net gains and operating costs from
   repossessed assets                           55          1,553           1,662             222             412
- ---------------------------------------------------------------------------------------------------------------------
  Total                                $    51,991    $    55,092     $    48,382     $    45,665    $     42,138
=====================================================================================================================
</TABLE>

<PAGE>

RISK ELEMENTS

The  aggregate  loan  portfolio at March 31, 1998  increased $71 million to $2.8
billion during the first quarter of 1998.  Commercial and commercial real estate
loans  increased  $70  million and $24  million,  respectively.  These  included
increases  for Bank of Texas,  NA of $18  million for  commercial  loans and $15
million for commercial  real estate loans.  Consumer loans decreased $49 million
due to the sale of student loans during the quarter.

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

<PAGE>6

businesses and individuals in Oklahoma.  This geographic  concentration subjects
the loans portfolio to the general economic conditions in Oklahoma. Notable loan
concentrations  by the primary  industry of the borrowers are presented in Table
6.

<TABLE>
=====================================================================================================================
TABLE 6 - LOANS
(In thousands)

                                         March 31,       Dec. 31,        Sept. 30,       June 30,        March 31,
                                           1998            1997            1997            1997             1997
                                    ---------------------------------------------------------------------------------
<S>                                  <C>             <C>              <C>            <C>              <C>         
Commercial:
  Energy                             $     324,052   $      332,770   $     333,347  $      281,801   $    255,975
  Manufacturing                            222,385          201,918         185,795         170,052        160,160
  Wholesale/retail                         250,702          242,156         255,768         265,547        256,154
  Agricultural                             159,324          151,525         155,052         142,908        129,619
  Services                                 473,684          465,317         416,871         381,452        352,996
  Other commercial and industrial          139,516          105,714         168,028         186,065        171,178
Commercial real estate:
  Construction and land development        123,412          102,800          79,275          74,595         67,143
  Multifamily                               95,335          100,422         110,340         115,188        123,118
  Other real estate loans                  283,329          274,579         258,280         244,944        227,881
Residential mortgage:
  Secured by 1-4 family
    residential properties                 404,481          419,139         414,050         423,123        426,956
  Residential mortgages held for           118,777           78,669         103,300          79,438         67,192
sale
Consumer                                   241,299          290,084         289,892         264,130        261,241
- ---------------------------------------------------------------------------------------------------------------------
  Total                              $   2,836,296   $    2,765,093   $   2,769,998  $    2,629,243   $  2,499,613
=====================================================================================================================
</TABLE>

<PAGE>7

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 March 31, 1998,  loans totaling $52 million were assigned to the  substandard
risk  category  and loans  totaling  $84  million  were  assigned to the special
mention risk category, compared to $57 million and $68 million, respectively, at
December 31, 1997. The increase in special mention loans is due primarily to one
borrower  incurring  losses on  activities  outside of the normal scope of their
operations.  Management  does not  expect to incur any losses on this loan based
upon information currently available.


<TABLE>
=====================================================================================================================
TABLE 7 - NONPERFORMING ASSETS
(In thousands)

                                                  March 31,     Dec. 31,     Sept. 30,     June 30,      March 31,
                                                    1998          1997          1997         1997           1997
                                             ------------------------------------------------------------------------
<S>                                            <C>            <C>          <C>          <C>           <C>        
Nonperforming assets:
 Nonperforming loans:
  Nonaccrual loans:
   Commercial                                  $    12,556    $    12,717  $    16,103  $    16,556   $    13,624
   Commercial real estate                            2,824          2,960        3,854        3,721         2,910
   Residential mortgage                              2,243          2,441        2,512        2,641         2,969
   Consumer                                          1,192            649          713          776           751
- ---------------------------------------------------------------------------------------------------------------------
    Total nonaccrual loans                          18,815         18,767       23,182       23,694        20,254
  Loans past due (90 days) (1)                      18,330         18,178       20,551       17,976        17,838
- ---------------------------------------------------------------------------------------------------------------------
   Total nonperforming loans (1)                    37,145         36,945       43,733       41,670        38,092
- ---------------------------------------------------------------------------------------------------------------------
 Other nonperforming assets:
  Commercial real estate                             2,297          2,395        2,503        2,594         2,710
  Other                                              3,069          2,863        2,684        2,970         3,381
- ---------------------------------------------------------------------------------------------------------------------
     Total other nonperforming assets                5,366          5,258        5,187        5,564         6,091
- ---------------------------------------------------------------------------------------------------------------------
 Total nonperforming assets                    $    42,511    $    42,203  $    48,920  $    47,234   $    44,183
=====================================================================================================================
Ratios:
 Reserve for loan losses to
  nonperforming loans                              147.63%        143.73%      119.80%      119.68%       127.37%
 Nonperforming loans (1) to
  period-end loans (2)                               1.37           1.38         1.64         1.63          1.57
- ---------------------------------------------------------------------------------------------------------------------
(1) Includes 1-4 family loans
    guaranteed by agencies of
    the U.S. government                        $    16,006    $    14,468  $    16,010  $    15,538   $    15,083
(2) Excludes residential mortgage loans held for sale
- ---------------------------------------------------------------------------------------------------------------------
</TABLE>

The reserve for loans losses,  which is available to absorb  losses  inherent in
the loan  portfolio,  totaled  $55  million at March 31,  1998,  compared to $53
million at December 31, 1997.  This  represents  2.02% and 1.98% of total loans,
excluding  loans  held for  sale,  at March  31,  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.

<PAGE>8

<TABLE>
===================================================================================================================
TABLE 8 - SUMMARY OF LOAN LOSS EXPERIENCE
(In thousands)
                                                                 Three Months Ended
                                  ---------------------------------------------------------------------------------
                                       March 31,      Dec. 31,       Sept. 30,        June 30,        March 31,
                                         1998           1997            1997            1997             1997
                                  ---------------------------------------------------------------------------------
<S>                                <C>            <C>             <C>             <C>             <C>          
Beginning balance                  $      53,101  $      52,393   $      49,871   $      48,517   $      45,148
 Loans charged-off:
  Commercial                                 172          1,852           1,179             288              24
  Commercial real estate                       -            441             194               5              58
  Residential mortgage                        50            269              91              34              15
  Consumer                                 1,305          1,464           1,051           1,095           1,143
- -------------------------------------------------------------------------------------------------------------------
  Total                                    1,527          4,026           2,515           1,422           1,240
- -------------------------------------------------------------------------------------------------------------------
 Recoveries of loans previously charged-off:
   Commercial                                120            611           1,004             547             367
   Commercial real estate                    161             69             393             341             148
   Residential mortgage                       82            119             325              53              64
   Consumer                                  432            435             315             335             479
- -------------------------------------------------------------------------------------------------------------------
    Total                                    795          1,234           2,037           1,276           1,058
- -------------------------------------------------------------------------------------------------------------------
Net loans charged-off                        732          2,792             478             146             182
(recoveries)
 Provision for loan losses                 2,470          3,500           3,000           1,500           1,026
 Addition due to acquisition                   -              -               -               -           2,525
- -------------------------------------------------------------------------------------------------------------------
Ending balance                     $      54,839  $      53,101   $      52,393   $      49,871   $      48,517
===================================================================================================================
 Reserve to loans outstanding
  at period-end(1)                          2.02           1.98            1.96            1.96            1.99
 Net loan losses (recoveries)
  (annualized) to average loans (1)         0.10           0.14            0.07            0.02            0.03
- -------------------------------------------------------------------------------------------------------------------
<FN>
(1) Excludes  residential  mortgage loans held for sale which are carried at the
lower of aggregate cost or market value.
</FN>
</TABLE>

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 $2.5 million for the first  quarter of 1998 and $1.0 million
for the first 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  and in  criticized  assets,  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  March  31,  1998,  other  assets  included  $22.8  million  of  natural  gas
compression and other  equipment  which is being leased to various  customers by
entities  in which  BOK  Capital  Services  Corporation,  as  subsidiary  of BOK
Financial, is a general partner. The terms of these leases are generally 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 related 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

<PAGE>9

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.  At March 31, 1998, BOK Financial is within all
guidelines established under these policies.

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 March 31, 1998, this modeling  indicated  interest
rate sensitivity as follows (dollars in thousands):

                                      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          $   2,491        $   ( 3,130)       $ ( 736)
                                         1.3%              (1.6%)         (0.4%)
      Net income                    $   5,075        $   (26,987)       $  (410)
                                         6.7%             (35.6%)         (0.5%)
      Economic value of equity      $ ( 9,092)       $   ( 7,780)       $ 4,717
                                        (1.3%)             (1.0%)          0.7%

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 $25.1  million.
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 is a projected decrease in net income of $27.0
million  or 35.6%  compared  to  projected  net  income  assuming  no changes in
interest rates.

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

<PAGE>10

timing,  magnitude  and frequency of interest rate changes and changes in market
conditions and management strategies, among other factors.

Subsequent  to March 31, 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,  through market value
increases on the  derivative  instruments,  the  estimated  pre-tax risk of loss
assuming a 50 basis  point  decrease in interest  rates from  approximately  $15
million to  approximately  $5 million.  While this program is expected to reduce
the risk of loss on capitalized  mortgage servicing rights in a falling interest
rate  environment,  it limits the  increase in market  value of the  capitalized
mortgage  servicing rights in a rising rate  environment.  Management  estimates
that a 50 basis point  increase in interest  rates would  result a $9.4  million
decrease in the market value of the  derivative  instruments  compared to a $7.9
million increase in the fair value of the capitalized mortgage servicing rights.


================================================================================
TABLE 9 - INTEREST RATE SWAPS
(In thousands)
                         Notional           Pay                     Receive
                          Amount            Rate                      Rate
                      ----------------------------------------------------------
Expiration:
  1998                    63,000     5.63 - 5.94% (1)           6.64 - 7.96%
  1999                    22,000      5.63 - 5.94 (1)          6.80 - 7.68
  2006                    16,500           7.26                         5.65 (1)
  2007                   100,000           5.69 (1)         6.75 - 6.80
  2007                    10,000           7.47                         5.69 (1)
- --------------------------------------------------------------------------------
(1)  Rates  are  variable  based  on  LIBOR  and  reset  monthly,  quarterly  or
semiannually.


BOK Financial  uses  interest rate swaps,  an 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 first  quarter of 1998,  income  from these swaps  exceeded  the cost of the
swaps by $533  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.   Derivative  products  are  not  used  for
speculative purposes.

- --------------------------------------------------------------------------------
TABLE 10 - CAPITAL RATIOS
                                March 31, Dec. 31,  Sept. 30, June 30, March 31,
                                  1998      1997      1997      1997      1997
                              --------------------------------------------------
Average shareholders' equity
  to average assets              8.00%     8.13%      7.76%     7.33%      7.70%
Risk-based capital:
  Tier 1 capital                  9.47      9.49       8.93      9.00      8.96
  Total capital                  14.47     14.69      14.08     10.75     10.81
Leverage                          6.81      6.81       6.53      6.26      6.34


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.


<PAGE>11

================================================================================
Consolidated Statement of Earnings
(In Thousands Except Share Data)
                                                            Three Months Ended
                                                                 March 31,
                                                         -----------------------
                                                          1998           1997
                                                         ------------ ----------
Interest Revenue
Loans                                                 $   60,737   $    51,355
Taxable securities                                        27,235        22,567
Tax-exempt securities                                      3,918         4,119
- -------------------------------------------------------- ------------ ----------
   Total securities                                       31,153        26,686
- -------------------------------------------------------- ------------ ----------
Trading securities                                           163            58
Funds sold                                                   691           711
- -------------------------------------------------------- ------------ ----------
   Total interest revenue                                 92,744        78,810
- -------------------------------------------------------- ------------ ----------
Interest Expense
Deposits                                                  33,383        29,984
Other borrowings                                          14,958        13,668
Subordinated debenture                                     2,367            96
- -------------------------------------------------------- ------------ ----------
   Total interest expense                                 50,708        43,748
- -------------------------------------------------------- ------------ ----------
Net Interest Revenue                                      42,036        35,062
Provision for Loan Losses                                  2,470         1,026
- -------------------------------------------------------- ------------ ----------
Net Interest Revenue After 
  Provision for Loan Losses                               39,566        34,036
- -------------------------------------------------------- ------------ ----------
Other Operating Revenue
Brokerage and trading revenue                              3,131         2,240
Transaction card revenue                                   5,540         3,999
Trust fees and commissions                                 6,884         5,278
Service charges and fees on deposit accounts               7,638         6,714
Mortgage banking revenue, net                              9,321         6,948
Leasing revenue                                            1,661         1,261
Other revenue                                              2,685         2,655
- -------------------------------------------------------- ------------ ----------
Total Fees and Commissions                                36,860        29,095
- -------------------------------------------------------- ------------ ----------
Gain on sale of student loans                              1,415         1,095
Gain on securities                                         2,512           262
- -------------------------------------------------------- ------------ ----------
  Total Other Operating Revenue                           40,787        30,452
- -------------------------------------------------------- ------------ ----------
Other Operating Expense
Personnel                                                 24,829        19,294
Business promotion                                         1,897         1,950
Contribution of stock to Bank of Oklahoma Foundation       2,257             -
Professional fees and services                             1,596         1,496
Net occupancy, equipment & data processing                 9,214         8,320
FDIC and other insurance                                     310           333
Printing, postage and supplies                             2,047         1,825
Net gains and operating expenses 
  of repossessed assets                                      (55)         (412)
Amortization of intangible assets                          2,302         1,728
Mortgage banking costs                                     6,023         4,217
Provision for impairment of mortgage 
  servicing rights                                         3,000             -
Other expense                                              3,773         2,975
- -------------------------------------------------------- ------------ ----------
Total Other Operating Expense                             57,193        41,726
- -------------------------------------------------------- ------------ ----------
Income Before Taxes                                       23,160        22,762
Federal and state income tax                               6,847         7,415
- -------------------------------------------------------- ------------ ----------
Net Income                                            $   16,313   $    15,347
- -------------------------------------------------------- ------------ ----------
Earnings Per Share:
Net Income
   Basic                                              $      .73   $       .69
- -------------------------------------------------------- ------------ ----------
   Diluted                                            $      .65   $       .61
- -------------------------------------------------------- ------------ ----------
Average Shares Used in Computation:
   Basic                                               21,922,372   21,850,055
- --------------------------------------------------------------------------------
    Diluted                                            25,177,435   24,958,334
- --------------------------------------------------------------------------------

See accompanying notes to consolidated financial statements.

<PAGE>12

<TABLE>
====================================================================================================================
CONSOLIDATED BALANCE SHEETS
(In Thousands Except Share Data)

                                                            March 31,       December 31,        March 31,
                                                               1998             1997               1997
                                                           ---------------------------------------------------
<S>                                                      <C>              <C>               <C>           
ASSETS
Cash and due from banks                                  $    410,369   $    371,321    $    342,913
Funds sold                                                      5,450         18,005          76,387
Trading securities                                             19,027          4,999           3,887
Securities:
  Available for sale                                        1,873,390      1,749,411       1,787,637
  Investment (fair value:  March 31, 1998 - $222,545;
    December 31, 1997 -$214,125;
    March 31, 1997 - $202,325 )                               221,825        213,111         202,750
- --------------------------------------------------------------------------------------------------------
    Total securities                                        2,095,215      1,962,522       1,990,387
- --------------------------------------------------------------------------------------------------------
Loans                                                       2,836,296      2,765,093       2,499,613
Less reserve for loan losses                                   54,839         53,101          48,517
- --------------------------------------------------------------------------------------------------------
  Net loans                                                 2,781,457      2,711,992       2,451,096
- --------------------------------------------------------------------------------------------------------
Premises and equipment, net                                    58,109         65,478          62,039
Accrued revenue receivable                                     53,019         50,754          49,566
Excess cost over fair value of net assets acquired
  and core deposit premiums (net of accumulated
  amortization: March  31, 1998 - $41,884;
  December 31, 1997 - $39,582;
  March 31, 1997 - $22,991)                                    65,494         67,796          74,926
Mortgage servicing rights                                      80,274         83,890          67,005
Real estate and other repossessed assets                        5,366          5,258           6,091
Other assets                                                   58,887         57,627          60,215
- --------------------------------------------------------------------------------------------------------
Total assets                                             $  5,632,667   $  5,399,642    $  5,184,512
- --------------------------------------------------------------------------------------------------------

LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing demand deposits                      $    978,490   $    881,029    $    822,984
Interest-bearing deposits:
  Transaction                                               1,159,160      1,124,288       1,046,562
  Savings                                                     113,172        106,900         112,292
  Time                                                      1,768,552      1,615,862       1,616,860
- --------------------------------------------------------------------------------------------------------
    Total deposits                                          4,019,374      3,728,079       3,598,698
- --------------------------------------------------------------------------------------------------------
Funds purchased and repurchase
  agreements                                                  614,534        631,815         802,990
Other borrowings                                              345,602        394,087         325,530
Subordinated debenture                                        148,388        148,356          20,000
Accrued interest, taxes and expense                            41,217         39,998          50,332
Other liabilities                                              14,917         21,830          15,786
- --------------------------------------------------------------------------------------------------------
    Total liabilities                                       5,184,032      4,964,165       4,813,336
- --------------------------------------------------------------------------------------------------------
Stockholders' equity:
Preferred stock                                                    23             23              23
Common stock ($.00006 par value; 2,500,000,000
  shares authorized; shares issued and outstanding
  March 31, 1998 - 22,010,110;  December 31, 1997
  -  21,975,747; March 31, 1997 - 21,193,453)                       1              1               1
Capital surplus                                               209,750        208,327         176,982
Retained earnings                                             234,567        218,629         197,864
Treasury stock (shares at cost: March 31,1998 -
111,409; December 31, 1997 - 66,377; March 31, 1997-           (4,410)        (2,190)           (844)
30,512)
Unrealized gain (loss) on securities available for sale         8,708         10,691          (2,845)
Less notes receivable from exercise of stock options               (4)            (4)             (5)
- --------------------------------------------------------------------------------------------------------
    Total shareholders' equity                                448,635        435,477         371,176
- --------------------------------------------------------------------------------------------------------
Total liabilities and shareholders' equity               $  5,632,667   $  5,399,642    $  5,184,512
- --------------------------------------------------------------------------------------------------------

See accompanying notes to consolidated financial statements.
</TABLE>

<PAGE>13

<TABLE>
- ------------------------------------------------------------------------------------------------------------------------------
CONSOLIDATED STATEMENTS OF CHANGES IN
SHAREHOLDERS EQUITY
(In Thousands)
                                                  
                                                  Accumulated
             Preferred Stock   Common     Stock      Other      Capital   Retained  Treasury  Stock         Notes
            --------------------------------------Comprehensive                --------------------
               Shares  Amount    Shares   Amount     Income      Surplus   Earnings    Shares   Amount    Receivable    Total
            -------------------------------------------------------------------------------------------------------------------
   
<S>           <C>       <C>      <C>     <C>        <C>         <C>       <C>            <C>   <C>           <C>     <C>     
Balances at December
  31, 1996    250,000   $  23    21,149  $    1     $  1,472    $176,093  $ 182,892       17   $ (428)       $  (87) $ 359,966     
Comprehensive Income:
  Net income       -        -         -        -           -           -     15,347        -        -             -     15,347
  Other comprehensive income,
    net of tax:
    Unrealized gains(losses)
    on securities available
    for sale (1)   -        -         -        -      (4,317)          -          -        -        -             -     (4,317)
                                                                                                                        -------
  Comprehensive income                                                                                                  11,030
                                                                                                                        -------
Exercise of stock 
  options          -        -        25        -          -          469          -       14     (416)            -         53
Payments on stock option 
  notes receivable -        -         -        -          -            -          -        -        -            82         82
Preferred dividends paid
 in shares of 
  common stock     -        -        17        -          -          375       (375)       -        -             -           -
Director retainer
  shares           -        -         2        -          -           45          -        -        -             -          45
- --------------------------------------------------------------------------------------------------------------------------------
Balance at March 
  31, 1997   250,000   $   23    21,193   $    1    $ (2,845)   $176,982   $197,864       31   $ (844)    $      (5)  $ 371,176
================================================================================================================================

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       -        -         -        -                       -     16,313       -         -             -      16,313
  Other comprehensive income,
    net of tax:
    Unrealized gains(losses)
    on securities available
    for sale (1)   -        -         -        -      (1,983)          -          -        -        -             -      (1,983)
                                                                                                                         -------
  Comprehensive income                                                                                                   14,330
                                                                                                                         -------
Plan Exercise of 
  stock options    -        -        23        -           -         973          -       8      (346)           -         627
Payments on stock option 
  notes receivable -        -         -        -           -           -          -       -         -            -           -
Preferred dividends
  paid in shares of 
  common stock     -        -         9        -           -         375       (375)      -         -            -           -
Director retainer 
  shares           -        -         2        -           -          75          -       -         -            -          75
Treasury stock 
  purchase         -        -         -        -           -           -          -      37    (1,874)           -      (1,874)
- --------------------------------------------------------------------------------------------------------------------------------
Balances at March 
  31, 1998    250,000   $  23    22,010   $    1     $ 8,708    $209,750   $234,567     111    $(4,410)       $ (4)  $ 448,635
================================================================================================================================
<FN>

                                        March 31, 1998     March 31, 1997
                                        -----------------------------------
(1) Reclassification adjustments:
    Unrealized gain(loss) on available 
      for sale securities                  $    (214)         $  (4,140)
    Less:  reclassification adjustment 
       for gains realized included in
       net income, net of tax                  1,769                177
                                        ----------------------------------
    Net unrealized losses on securities    $  (1,983)         $  (4,317)
                                        ===================================

See accompanying notes to consolidated financial statements.
</FN>
</TABLE>

<PAGE>14

================================================================================
CONSOLIDATED STATEMENTS OF CASH FLOWS
(In Thousands Except Share Data)
                                                             Three Months Ended
                                                                   March 31,
                                                           ---------------------
                                                               1998       1997
                                                           ---------------------
Cash Flow From Operating Activities:
Net income                                                 $   16,313  $ 15,347
Adjustments to reconcile net income to net cash
  provided (used) by operating activities:
  Provision for loan and repossessed real estate losses         2,470     1,026
  Depreciation and amortization                                 9,193     6,577
  Valuation adjustment of intangible assets                     3,000         -
  Net amortization of  security discounts and premiums            364       790
  Contribution of stock to Bank of Oklahoma Foundation          2,257         -
  Net gain on sale of assets                                   (5,590)   (2,339)
  Mortgage loans originated for resale                       (221,621) (180,488)
  Proceeds from sale of mortgage loans held for resale        183,078   209,336
  (Increase) decrease in trading securities                   (14,028)    2,567
  (Increase) decrease in accrued revenue receivable            (2,264)    2,071
  Increase in other assets                                     (1,142)   (4,312)
  Increase in accrued interest, taxes and expense               1,401     5,568
  Decrease in other liabilities                                (2,302)     (304)
- --------------------------------------------------------------------------------
Net cash provided (used) by operating activities              (28,871)   55,839
- --------------------------------------------------------------------------------
Cash Flow From Investing Activities:
  Proceeds from maturities of investment securities             7,364     4,822
  Proceeds from maturities of available for sale securities    97,875    59,084
  Purchases of investment securities                          (16,894)   (9,187)
  Purchases of available for sale securities                 (690,995) (317,023)
  Proceeds from sales of available for sale securities        466,935    75,508
  Loans originated or acquired net or principal collected     (85,115)    2,748
  Proceeds from disposition of assets                          63,737     2,978
  Purchases of assets                                         (11,900)   20,239)
  Cash and cash equivalents of branches & subsidiaries
    acquired and sold, net                                          -    (1,240)
- --------------------------------------------------------------------------------
  Net cash used by investing activities                      (168,993) (202,549)
- --------------------------------------------------------------------------------
Cash Flows From Financing Activities:
  Net increase (decrease) in demand deposits, transaction
    deposits, money market deposits, and savings accounts     138,605    (4,053)
  Net increase in certificates of deposit                     152,690       406
  Net increase (decrease) in other borrowings                 (65,766)  181,926
  Issuance of subordinated debenture                                -    20,000
  Purchase of treasury stock                                   (1,874)        -
  Issuance of preferred, common and treasury stock, net           702        98
  Payments on stock option notes receivable                         -        82
- --------------------------------------------------------------------------------
Net cash provided by financing activities                     224,357   198,459
- --------------------------------------------------------------------------------
Net increase in cash and cash equivalents                      26,493    51,749
Cash and cash equivalents at beginning of period              389,326   367,551
- --------------------------------------------------------------------------------
Cash and cash equivalents at end of period                 $  415,819  $419,300
- --------------------------------------------------------------------------------

Cash paid for interest                                     $   49,503  $ 42,118
- --------------------------------------------------------------------------------
Cash paid for taxes                                        $      353  $    385
- --------------------------------------------------------------------------------
Net loans transferred to repossessed real estate
    and other assets                                       $      701  $    694
- --------------------------------------------------------------------------------
Payment of preferred stock dividends in common stock       $      375  $    375
- --------------------------------------------------------------------------------

See accompanying notes to consolidated financial statements

<PAGE>15

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 duration similar to that
of 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 are reviewed at
least  monthly to  determine  whether a high degree of  correlation  exists on a
statistically  valid basis.  If correlation  criteria are not met, the contracts
are no longer  accounted for as a hedge.  In such  circumstances,  any remaining
unamortized deferred gains or losses are recognized in current income.

(2) MORTGAGE BANKING ACTIVITIES

At March 31, 1998,  BOk owned the rights to service  92,319  mortgage loans with
outstanding principal balances of $7.0 billion,  including $189 million serviced
for BOk. The weighted average interest rate and remaining term was 7.67% and 284
months, respectively.

Activity  in  capitalized   mortgage  servicing  rights  and  related  valuation
allowance during the three months ending March 31, 1998 is as follows:
<TABLE>

                                                    Capitalized Mortgage Servicing Rights
                               -------------------------------------------------------------------
                                                                            Valuation
                                 Purchased       Originated      Total      Allowance       Net
                               ---------------- ----------- ------------- ------------------------
<S>                            <C>            <C>           <C>          <C>           <C>       
Balance at December 31, 1997   $   78,961     $    9,929    $  88,890    $   (5,000)   $   83,890
Additions                             622          2,734        3,356             -         3,356
Amortization expense               (3,495)          (477)      (3,972)            -        (3,972)
Provision for impairment                -              -            -        (3,000)       (3,000)
Impairment charge-off              (2,296)             -       (2,296)        2,296             -
- ---------------------------------------------------------------------------------------------------
Balance at
    March 31, 1998             $   73,792     $   12,186    $  85,978    $   (5,704)   $   80,274
===================================================================================================
Estimated fair value of Mortgage
  servicing rights (1)         $   74,515     $   14,905    $  89,420                 $    89,420
===================================================================================================
<FN>
(1)    Excludes approximately $15.2 million of loan servicing rights on mortgage
       loans originated prior to the adoption of FAS 122.
</FN>
</TABLE>
<PAGE>16

(3) DISPOSAL OF AVAILABLE FOR SALE SECURITIES

Sales of available  for sale  securities  for the three months  ending March 31,
1998 resulted in gains and losses as follows (in thousands):

        Proceeds                          $   466,935
        Gross realized gains                    3,157
        Gross realized losses                     645
        Related federal and state
           income tax expense                     743

 (4) EARNINGS PER SHARE

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

                                                                               Three Months Ended
                                                                    --------------------------------------
                                                                       March 31, 1998    March 31, 1997
                                                                    --------------------------------------
<S>                                                                 <C>                 <C>           
Numerator:
   Net income                                                       $       16,313      $       15,347
   Preferred stock dividends                                                 (375)               (375)
- ----------------------------------------------------------------------------------------------------------
Numerator for basic earnings per share - income
   available to common stockholders                                        15,938              14,972
- ----------------------------------------------------------------------------------------------------------
Effect of dilutive securities:
   Preferred stock dividends                                                  375                 375
- ----------------------------------------------------------------------------------------------------------
Numerator for diluted earnings per share - income available
   to common stockholders after assumed conversion                  $       16,313      $       15,347
==========================================================================================================
Denominator:
   Denominator for basic earnings per share -weighted average shares    21,922,372          21,850,055
   Effect of dilutive securities:
     Employee stock options                                                356,877             210,093
     Convertible preferred stock                                         2,898,186           2,898,186
- ----------------------------------------------------------------------------------------------------------
Dilutive potential common shares                                         3,255,063           3,108,279
- ----------------------------------------------------------------------------------------------------------
Denominator for diluted earnings per share - adjusted
   weighted average shares and assumed conversions                      25,177,435          24,958,334
==========================================================================================================
Basic earnings per share                                                     $0.73               $0.69
==========================================================================================================
Diluted earnings per share                                                   $0.65               $0.61
==========================================================================================================
</TABLE>

(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.


<PAGE>16


<TABLE>
==============================================================================================================================
QUARTERLY FINANCIAL SUMMARY - UNAUDITED
Consolidated Daily Average Balances, Average Yields and Rates
(In Thousands Except Share Data)
                                                                         For Three months ended



                                        --------------------------------------------------------------------------------------
                                                       March 31, 1998                             December 31, 1997
                                        -------------------------------------------     --------------------------------------
                                             Average         Revenue/     Yield         Average         Revenue/     Yield
                                             Balance        Expense(1)    /Rate         Balance        Expense(1)    /Rate
                                        --------------------------------------------------------------------------------------
<S>                                      <C>             <C>                 <C>    <C>             <C>                <C>  
Assets
  Taxable securities                     $    1,772,971  $    27,235         6.19%  $    1,562,455  $    24,408        6.20%
  Tax-exempt securities(1)                      328,735        6,248         7.44          331,793        6,666         7.97
- ------------------------------------------------------------------------------------------------------------------------------
    Total securities                          2,101,706       33,483         6.43        1,894,238       31,074         6.51
- ------------------------------------------------------------------------------------------------------------------------------
  Trading securities                             11,774          163         5.87            6,203           93         5.95
  Funds sold                                     47,050          691         5.91           53,964          724         5.32
  Loans(2)                                    2,822,147       60,737         8.76        2,764,436       60,924         8.74
    Less reserve for loan losses                 54,164            -            -           53,180            -            -
- ------------------------------------------------------------------------------------------------------------------------------
  Loans, net of reserve                       2,767,983       60,737         8.93        2,711,256       60,924         8.92
- ------------------------------------------------------------------------------------------------------------------------------
    Total earning assets                      4,928,513       95,074         7.85        4,665,661       92,815         7.89
- ------------------------------------------------------------------------------------------------------------------------------
  Cash and other assets                         625,863                                    618,039
- ------------------------------------------------------------------------------------------------------------------------------
        Total assets                     $    5,554,376                             $    5,283,700
- ------------------------------------------------------------------------------------------------------------------------------

Liabilities And Shareholders' Equity
  Transaction deposits                   $    1,145,221        8,917         3.08   $    1,102,144        8,466         3.05
  Savings deposits                              109,560          602         2.21          106,207          596         2.23
  Other time deposits                         1,739,816       23,864         5.56        1,582,538       22,037         5.52
- ------------------------------------------------------------------------------------------------------------------------------
     Total interest-bearing deposits          2,994,597       33,383         4.45        2,790,889       31,099         4.42
- ------------------------------------------------------------------------------------------------------------------------------
  Other borrowings                            1,051,724       14,958         5.89        1,050,545       15,169         5.73
  Subordinated debenture                        148,374        2,367        6.36           148,334        2,439        6.52
- ------------------------------------------------------------------------------------------------------------------------------
     Total interest-bearing liabilities       4,194,695       50,708         4.91        3,989,768       48,707         4.84
- ------------------------------------------------------------------------------------------------------------------------------
  Demand deposits                               858,340                                    783,508
  Other liabilities                              57,095                                     80,763
  Shareholders' equity                          444,246                                    429,661
- ------------------------------------------------------------------------------------------------------------------------------
  Total liabilities and 
    shareholders' Equity                 $    5,554,376                             $    5,283,700
- ------------------------------------------------------------------------------------------------------------------------------
  Tax-Equivalent Net Interest Revenue (1)                     44,366         2.94                        44,108          3.05
  Tax-Equivalent Net Interest  Revenue (1)
     To Earning Assets                                                       3.65                                       3.75
   Less tax-equivalent adjustment (1)                          2,330                                      2,396
- ------------------------------------------------------------------------------------------------------------------------------
Net Interest Revenue                                          42,036                                     41,712
Provision for loan losses                                      2,470                                      3,500
Other operating revenue                                       40,787                                     33,521
Other operating expense                                       57,193                                     61,277
- ------------------------------------------------------------------------------------------------------------------------------
Income Before Taxes                                           23,160                                     10,456
Federal and state income tax                                   6,847                                     (6,362)
- ------------------------------------------------------------------------------------------------------------------------------
Net Income                                               $    16,313                                $    16,818
- ------------------------------------------------------------------------------------------------------------------------------
Earnings Per Share:
  Net Income
    Primary                                              $      0.73                                $      0.75
- ------------------------------------------------------------------------------------------------------------------------------
    Fully Diluted                                        $      0.65                                $      0.67
- ------------------------------------------------------------------------------------------------------------------------------
<FN>
(1)  Tax  equivalent  at the  statutory  federal and state rates for the periods
     presented.  The taxable  equivalent  adjustments  shown are  forcomparative
     purposes.
(2)  The loan  averages  include loans on which the accrual of interest has been
     discontinued and are stated net of unearned income.
</FN>
</TABLE>


<PAGE>18

<TABLE>
======================================================================================================================

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

<S>                <C>            <C>    <C>             <C>               <C>    <C>           <C>             <C>  
  $    1,560,418  $  24,354       6.19%  $    1,634,264  $    25,793       6.33%  $   1,484,137 $    22,861     6.25%
         360,461      6,764       7.44          344,558        6,572       7.65         339,542       6,135     7.33
- ----------------------------------------------------------------------------------------------------------------------
       1,920,879     31,118        6.43       1,978,822       32,365        6.56      1,823,679      28,996     6.45
- ----------------------------------------------------------------------------------------------------------------------
           3,583         53        5.87           5,552           83        6.00          3,790          58     6.21
          49,645        740        5.91          57,072          817        5.74         50,967         711     5.66
       2,676,237     59,063        8.76       2,535,264       55,850        8.84      2,414,234      51,446     8.64
          51,165                  -              49,164                    -             46,771           -       -
                          -                                        -
- ----------------------------------------------------------------------------------------------------------------------
       2,625,072     59,063        8.93       2,486,100       55,850        9.01      2,367,463      51,446     8.81
- ----------------------------------------------------------------------------------------------------------------------
       4,599,179     90,974        7.85       4,527,546       89,115        7.89      4,245,899      81,211     7.76
- ----------------------------------------------------------------------------------------------------------------------
         590,260                                576,578                                 532,386
- ----------------------------------------------------------------------------------------------------------------------
  $    5,189,439                         $    5,104,124                           $   4,778,285
- ----------------------------------------------------------------------------------------------------------------------


  $    1,067,895      8,290        3.08  $    1,032,622        8,348        3.24  $     988,110       7,987     3.28
         108,104        603        2.21         109,349          604        2.22        103,542         564     2.21
       1,533,191     21,489        5.56       1,576,211       21,625        5.50      1,565,153      21,433     5.55
- ----------------------------------------------------------------------------------------------------------------------
       2,709,190     30,382        4.45       2,718,182       30,577        4.51      2,656,805      29,984     4.58
- ----------------------------------------------------------------------------------------------------------------------
       1,159,005     17,203        5.89       1,151,971       16,700        5.81        990,944      13,668     5.59
          81,395      1,305       6.36           20,000          326       6.45           6,000          96     6.40
- ----------------------------------------------------------------------------------------------------------------------
       3,949,590     48,890        4.91       3,890,153       47,603        4.91      3,653,749      43,748     4.86
- ----------------------------------------------------------------------------------------------------------------------
         761,578                                776,405                                 688,440
          75,732                                 63,664                                  68,159
         402,539                                373,902                                 367,937
- ----------------------------------------------------------------------------------------------------------------------
  $    5,189,439                         $    5,104,124                           $   4,778,285
- ----------------------------------------------------------------------------------------------------------------------
                     42,084        2.94                       41,512        2.98                     37,463     2.90

                                   3.63                                     3.68                                3.58
                      2,426                                    2,344                                  2,401
- ----------------------------------------------------------------------------------------------------------------------
                     39,658                                   39,168                                 35,062
                      3,000                                    1,500                                  1,026
                     34,315                                   31,411                                 30,452
                     46,720                                   45,443                                 41,726
- ----------------------------------------------------------------------------------------------------------------------
                     24,253                                   23,636                                 22,762
                      7,857                                    7,572                                  7,415
- ----------------------------------------------------------------------------------------------------------------------
                $    16,396                              $    16,064                            $    15,347
- ----------------------------------------------------------------------------------------------------------------------


                $      0.73                              $      0.72                            $      0.69
- ----------------------------------------------------------------------------------------------------------------------
                $      0.65                              $      0.64                            $      0.61
- ----------------------------------------------------------------------------------------------------------------------
</TABLE>


<PAGE>19

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
               March 31, 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: May 14, 1998                                  /s/ James A. White
     ----------------------                         ----------------------------
                                                    James A. White
                                                    Executive Vice President and
                                                    Chief Financial Officer


<TABLE> <S> <C>

<ARTICLE> 9
<LEGEND>
This schedule contains summary financial information extracted from BOK
Finanacial Corporation's 10-Q for the period ended March 31, 1997 and is
qualified in its entirety by reference to such financial statements.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                         410,369
<INT-BEARING-DEPOSITS>                               0
<FED-FUNDS-SOLD>                                 5,450
<TRADING-ASSETS>                                19,027
<INVESTMENTS-HELD-FOR-SALE>                  1,873,390
<INVESTMENTS-CARRYING>                         221,825
<INVESTMENTS-MARKET>                           222,545
<LOANS>                                      2,836,296
<ALLOWANCE>                                     54,839
<TOTAL-ASSETS>                               5,632,667
<DEPOSITS>                                   4,019,374
<SHORT-TERM>                                   959,320
<LIABILITIES-OTHER>                             56,134
<LONG-TERM>                                    149,204
                                0
                                         23
<COMMON>                                             1
<OTHER-SE>                                     448,611
<TOTAL-LIABILITIES-AND-EQUITY>               5,632,667
<INTEREST-LOAN>                                 60,737
<INTEREST-INVEST>                               31,153
<INTEREST-OTHER>                                   854
<INTEREST-TOTAL>                                92,744
<INTEREST-DEPOSIT>                              33,383
<INTEREST-EXPENSE>                              50,708
<INTEREST-INCOME-NET>                           42,036
<LOAN-LOSSES>                                    2,470
<SECURITIES-GAINS>                               2,512
<EXPENSE-OTHER>                                 57,193
<INCOME-PRETAX>                                 23,160
<INCOME-PRE-EXTRAORDINARY>                      16,313
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    16,313
<EPS-PRIMARY>                                      .73
<EPS-DILUTED>                                      .65
<YIELD-ACTUAL>                                    3.65
<LOANS-NON>                                     18,815
<LOANS-PAST>                                    18,330
<LOANS-TROUBLED>                                     0
<LOANS-PROBLEM>                                 51,647
<ALLOWANCE-OPEN>                                53,101
<CHARGE-OFFS>                                    1,527
<RECOVERIES>                                       795
<ALLOWANCE-CLOSE>                               54,839
<ALLOWANCE-DOMESTIC>                            54,839
<ALLOWANCE-FOREIGN>                                  0
<ALLOWANCE-UNALLOCATED>                              0
        

</TABLE>


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