STOCK PURCHASE AGREEMENT




                                   among


                       FOURTH FINANCIAL CORPORATION,
                               as Purchaser
                                      


                                     

                                    and




                           LSB INDUSTRIES, INC.,
                                    and
                       PRIME FINANCIAL CORPORATION,
                                as Sellers









                       Dated as of February 9, 1994


                             TABLE OF CONTENTS


                                                                   Page #
                                                                   ------ 

ARTICLE I.  Definitions. . . . . . . . . . . . . . . . . . . . . . . . . .1
  Section 1.1     Definitions. . . . . . . . . . . . . . . . . . . . . . .1
  Section 1.2     Accounting Terms . . . . . . . . . . . . . . . . . . . .8
  Section 1.3     Use of Defined Terms . . . . . . . . . . . . . . . . . .8

ARTICLE II. Sale and Transfer of Stock; Closing. . . . . . . . . . . . . .8
  Section 2.1     Sale of the Shares . . . . . . . . . . . . . . . . . . .8
  Section 2.2     Purchase Price . . . . . . . . . . . . . . . . . . . . .8
  Section 2.3     Additional Adjustments to Purchase Price . . . . . . . 10
  Section 2.4     Post-Closing Adjustments . . . . . . . . . . . . . . . 11
  Section 2.5     Closing. . . . . . . . . . . . . . . . . . . . . . . . 11
  Section 2.6     Closing Deliveries . . . . . . . . . . . . . . . . . . 12
  Section 2.7     Option to Acquire Certain Loans. . . . . . . . . . . . 13
  Section 2.8     Retained Assets and Retained Corporations
                  and Certain Loans. . . . . . . . . . . . . . . . . . . 13
 
ARTICLE III.      Agreements of the Parties. . . . . . . . . . . . . . . 13
  Section 3.1     Agreements of Fourth . . . . . . . . . . . . . . . . . 13
  Section 3.2     Agreements of Sellers. . . . . . . . . . . . . . . . . 15
  
ARTICLE IV. Representations and Warranties . . . . . . . . . . . . . . . 20
  Section 4.1     Representations and Warranties of Sellers. . . . . . . 20
  Section 4.2     Representations and Warranties of Fourth . . . . . . . 30

ARTICLE V.  Closing Conditions . . . . . . . . . . . . . . . . . . . . . 32
  Section 5.1     Conditions to Obligations of Fourth. . . . . . . . . . 32
  Section 5.2     Conditions to Obligations of Sellers . . . . . . . . . 34

ARTICLE VI. Termination of Agreement . . . . . . . . . . . . . . . . . . 35
  Section 6.1     Mutual Consent; Termination Date . . . . . . . . . . . 35
  Section 6.2     Election by Fourth . . . . . . . . . . . . . . . . . . 35
  Section 6.3     Election by Sellers  . . . . . . . . . . . . . . . . . 36

ARTICLE VII.      Indemnification. . . . . . . . . . . . . . . . . . . . 36
  Section 7.1     Effect of Closing. . . . . . . . . . . . . . . . . . . 36
  Section 7.2     General Indemnification. . . . . . . . . . . . . . . . 37
  Section 7.3     Procedure  . . . . . . . . . . . . . . . . . . . . . . 38
  Section 7.4     Survival of Representations and Warranties . . . . . . 38
  Section 7.5     Special Indemnification. . . . . . . . . . . . . . . . 39
  Section 7.6     Separate Indemnification for Environmental
                  Matters  . . . . . . . . . . . . . . . . . . . . . . . 40
  Section 7.7     Separate Indemnification for Barki 
                  Litigation . . . . . . . . . . . . . . . . . . . . . . 41
  Section 7.8     Director and Officer Indemnification . . . . . . . . . 41

ARTICLE VIII.     Miscellaneous. . . . . . . . . . . . . . . . . . . . . 42
  Section 8.1     Expenses . . . . . . . . . . . . . . . . . . . . . . . 42
  Section 8.2     Notices. . . . . . . . . . . . . . . . . . . . . . . . 42
  Section 8.3     Time . . . . . . . . . . . . . . . . . . . . . . . . . 43
  Section 8.4     Law Governing. . . . . . . . . . . . . . . . . . . . . 43
  Section 8.5     Entire Agreement; Amendment. . . . . . . . . . . . . . 43
  Section 8.6     Successors and Assigns . . . . . . . . . . . . . . . . 43
  Section 8.7     Cover, Table of Contents, and Headings . . . . . . . . 43
  Section 8.8     Counterparts . . . . . . . . . . . . . . . . . . . . . 43
  Section 8.9     No Third Party Beneficiaries . . . . . . . . . . . . . 43
  Section 8.10    Severability . . . . . . . . . . . . . . . . . . . . . 43




                                 EXHIBITS

Exhibit  "A"      Form of Housley Goldberg & Kantarian, P.C. legal opinion
                  with attached opinion of David A. Shear
Exhibit  "B"      Form of Foulston and Siefkin legal opinion
Exhibit  "C"      Form of Lease - Equity Tower
Exhibit  "D"      Form of Real Estate Contract - Retained Assets
Exhibit  "E"      Form of Bank Merger Agreement
                         



                             STOCK PURCHASE AGREEMENT




            STOCK PURCHASE AGREEMENT, dated as of February 9, 1994, among
FOURTH FINANCIAL CORPORATION, a Kansas corporation ("Fourth"), LSB INDUSTRIES,
INC., a Delaware corporation ("LSB"), and PRIME FINANCIAL CORPORATION, an
Oklahoma corporation ("Prime").


            W I T N E S S E T H: That,
            -------------------

            WHEREAS, Fourth desires to acquire all, and not less than all, of
the issued and outstanding capital stock of all classes of Equity Bank for
Savings, F.A. (the "Bank") and to simultaneously merge the Bank into Fourth's
subsidiary, BANK IV Oklahoma, National Association ("BANK IV") as permitted by
Section 501.1D of the Oklahoma Banking Code of 1965 as amended, subject to and
pursuant to the terms of this Agreement; and


            WHEREAS, LSB owns all of the issued and outstanding capital stock
of all classes of Prime and Prime owns all of the issued and outstanding
capital stock of the Bank; and


            WHEREAS, each party hereto believes that the proposed acquisition
by Fourth of Bank and the merger of the Bank into BANK IV pursuant to the
terms and conditions of this Agreement would be desirable and in their
respective best interests;


            NOW, THEREFORE, in consideration of the mutual covenants
hereinafter set forth, the parties hereto, intending to be legally bound,
agree as follows:


                                 ARTICLE I

                                DEFINITIONS


              1.1.    Definitions.  The following terms as used in this
Agreement shall have the following meanings unless the context otherwise
requires.

              

              "This Agreement" refers to this Stock Purchase Agreement and all
exhibits hereto and all amendments hereto.


              "Bank" means Equity Bank for Savings, F.A., a savings bank
organized under the laws of the United States.


              "BANK IV" means BANK IV Oklahoma, National Association, a national
banking association.


              "Bank Holding Company Act" means the federal Bank Holding Company
Act of 1956, as amended (12 U.S.C. Section 1841 et seq.), or any successor 
federal statute, and the rules and regulations of the Board promulgated 
thereunder, all as the same may be in effect at the time.


              "Bank Merger Agreement" means the Agreement to Merge,
substantially in the form of Exhibit "E" hereto, pursuant to which the Bank
will be merged into BANK IV at the Closing simultaneously with the
consummation of the Purchase.


              "Bank Stock" means common stock of the Bank, par value $.01 per
share.


              "Board" means the Board of Governors of the Federal Reserve System
or any successor governmental entity which may be granted powers currently
exercised by the Board of Governors.


              "Closing" shall mean the purchase and sale of the Shares and the
simultaneous consummation of the Merger.


              "Code" means the Internal Revenue Code of 1986, as amended, and
the rules and regulations promulgated thereunder, all as the same may be in
effect at the time.


              "Comptroller" means the United States Comptroller of the Currency
or any successor governmental agency which may be granted powers currently
exercised by the Comptroller of the Currency.



              "Corporations" means collectively the Bank and all of the
following of its Subsidiaries:  Credit Card Center, Inc., Equity Financial
Service Corp., and United BankCard, Inc.; and  "Corporation" means any one of
them.


              "Disclosure Statement" means the Disclosure Statement prepared by
Sellers and delivered by Sellers to Fourth prior to the execution and delivery
of this Agreement by Fourth.


              "Effective Time" means the date and time on which the Purchase is
effected as more fully defined in this Agreement. 


              "Environmental Liabilities" means all losses, costs, expenses,
claims, demands, liabilities, or obligations of whatever kind or otherwise,
based upon an Environmental Law relating to:

                      (i) any environmental matter or condition, including, but
              not limited to, on-site or off-site contamination, and regulation
              of chemical substances or products;

                      (ii) fines, penalties, judgments, awards, settlements,
              legal or administrative proceedings, damages, losses, claims,
              demands, and response, remedial or inspection costs and expenses
              arising under Environmental Laws;

                      (iii) financial responsibility under any Environmental
              Law for cleanup costs or corrective actions, including for any
              removal, remedial or other response actions, and for any natural
              resource damage; and

                      (iv)  any other compliance, corrective, or remedial
              action required under any Environmental Law.


              "Environmental Law" means any provision of Law relating to any
environmental matters or conditions, Hazardous Materials, pollution, or
protection of the environment, including, but not limited to, on-site and
off-site contamination, and regulation of chemical substances or products,
emissions, discharges, release, or threatened release of contaminants,
chemicals, or industrial, toxic, radioactive, or Hazardous Materials or wastes
into the environment, or otherwise relating to the manufacture, processing,
distribution, use, treatment, storage, disposal, transport, or handling of
Hazardous Materials, pollutants, contaminants, chemicals, or industrial,
toxic, radioactive, or hazardous substances or wastes.  


              "ERISA" means the Employee Retirement Income Security  Act of
1974, as amended, and the rules and regulations promulgated thereunder, all as
the same may be in effect at the time.


              "Facilities" means any real property, leaseholds, or other
interests owned by the Bank or any of the Corporations and/or any buildings,
plants, structures, or equipment of any of the Corporations, but shall not
include any real property, leaseholds, or other interests owned by any of the
Retained Corporations nor any of the Retained Assets other than the Equity
Tower. 


              "Federal Deposit Insurance Act" means the Federal Deposit
Insurance Act, as amended, and the rules and regulations promulgated
thereunder, all as the same may be in effect at the time.

              
              "FDIC" means the Federal Deposit Insurance Corporation or any
successor agency.


              "Financial Statements" refers to all of the financial statements
described in clause h of Section 4.1 and clause h of Section 5.1 of this
Agreement.

              
              "GAAP" means generally accepted accounting principles, applied on
a consistent basis.


              "Hazardous Materials" means and includes: (i) any hazardous
substance or toxic material (excluding any lawful product in customary
quantities for use in the Bank's or other occupant's ordinary course of
business which contains such substance or material), pollutant, contaminant,
toxic material, or hazardous waste as defined in any state, federal, or local
Environmental Law; (ii) waste oil and petroleum products; and (iii) any
asbestos, asbestos containing material, urea formaldehyde or material which
contains urea formaldehyde.

 

              "Indemnifying Losses" has the meaning set forth in Section 7.2 of
this Agreement.


              "Indemnitee" and "Indemnitees" shall have the meanings set forth
in Section 7.2 of this Agreement.


              "Law" or "Laws" means all applicable statutes, laws,  ordinances,
regulations, orders, writs, injunctions, or decrees of the United States of
America, any state or commonwealth, or any subdivision thereof, or of any
court or governmental department, agency, commission, board, bureau, or other
instrumentality.


              "Litigation" means any proceeding, claim, lawsuit, and/or
investigation being conducted or, to the best of the knowledge of the person
or corporation making the representation, threatened before any court or other
tribunal, including, but not limited to, proceedings, claims, lawsuits, and/or
investigations, under or pursuant to any occupational safety and health,
banking, antitrust, securities, tax, or other Laws, or under or pursuant to
any contract, agreement, or other instrument.


              "LSB" means LSB Industries, Inc., a Delaware corporation.


              "Merger" means the merger of the Bank into BANK IV at the Closing
immediately following the Purchase.


              "OREO Properties" means any interest in any real or personal
property owned by the Bank or any other Corporation acquired through
foreclosure or otherwise in connection with collecting a loan or lease.
              
              
              "OTS" means the Office of Thrift Supervision of the United States
Treasury and any successor agency which may be granted powers currently
exercised by the Office of Thrift Supervision.


              "Permitted Contract" means a contract or agreement, written or
oral, between the Bank or another of the Corporations, on the one hand, and a
person other than a customer of the Bank or another financial institution, on
the other hand, which (i) was entered into in the ordinary course of business,
(ii) may be terminated by the Bank after the Effective Time on no more than 60
days' prior notice, (iii) provides for a payment of no more than $5,000 in any
calendar month by the Bank or a Corporation, and (iv) provides for no payment
upon termination in excess of $5,000.


              "Permitted Encumbrances" means with respect to any asset:

                      (a) liens for taxes not past due;

                      (b) mechanics' and materialmen's liens for services
              or materials for which payment is not past due; and

                      (c) minor defects, encumbrances, and irregularities
              in title which do not, in the aggregate, materially diminish the
              value of an asset or materially impair the use of an asset for the
              purposes for which it is or is intended to be used.


              "Purchase" means the purchase at the Closing of all of the Shares
from Sellers by Fourth pursuant to this Agreement.


              "Purchase Price" has the meaning set forth in Section 2.2 of this
Agreement as adjusted in accordance with this Agreement.


              "Required Approvals" means the approval, consent, or
non-objection, as the case may be, of the Board, the OTS, the Comptroller, and
all other governmental or self-governing agencies, boards, departments, and
bodies whose approval, consent, or non-action is required in order to
consummate the Purchase and the Merger and the retention by BANK IV of all of
the Corporations engaged in banking or thrift-related activities and their
operations in substantially their present form except as specifically
otherwise provided in this Agreement, which approvals, consents, and
non-objections shall have become final and nonappealable without any appeal or
other form of review having been initiated and as to which all required
waiting periods shall have expired.


              "Retained Assets" means collectively (i) the loan and all related
rights and agreements on the books of the Bank secured by the Equity Tower
building (the "Equity Tower"), (ii) all OREO Properties, (iii) receivables
sold to the Bank pursuant to various purchase agreements dated March 8, 1988,
and (iv) such other assets that Sellers elect to  acquire from the Bank
pursuant to the provisions of Section 2.7 hereof; and "Retained Asset" means
any one of the Retained Assets.


              "Retained Corporations" means all of the following wholly owned
Subsidiaries of the Bank all of the capital stock of each of which is to be
purchased by LSB or Prime prior to the Effective Time:  Northwest Financial
Corporation, Northwest Energy Enterprises, Inc., and Northwest Capital
Corporation; and "Retained Corporation" means any one of them.


              "Securities Portfolio" means (i) all equity securities other than
investments in Subsidiaries, (ii) all mortgage-backed securities (as defined
by Section 5(c)(1)(R) of the Home Owners' Loan Act), (iii) all government
securities (as defined by Section 5(c)(1)(F) of the Home Owners' Loan Act),
and (iv) all obligations of or fully insured as to principal and interest by
the United States, owned by the Bank as of the Effective Time, whether held
for sale or otherwise.


              "Sellers" means LSB and Prime collectively.


              "Shares" means collectively all of the 100,000 shares of Bank
Stock being purchased and sold pursuant to this Agreement.

              
              "Subsidiary" means any corporation fifty percent or more of the
common stock or other form of equity of which shall be owned, directly or
indirectly, by another corporation.


              "Tangible Book Value of the Bank" means the aggregate consolidated
stockholders' equity of the Bank, calculated in accordance with GAAP, less the
amounts in the following accounts:  purchased mortgage servicing rights
(account number 1797), goodwill (account number 1799), and United BankCard
goodwill (account number 1305), net of accumulated amortization (account
number 1310).


              "Time Deposits" means all deposit liabilities shown on the Bank's
records as time deposits.
 


              1.2.    Accounting Terms.  All accounting terms not specifically
defined herein shall be construed in accordance with GAAP consistent with that
applied in the preparation of the financial statements submitted pursuant to
this Agreement, and all financial statements submitted pursuant to this
Agreement shall be prepared in all material respects in accordance with such
principles.


              1.3.    Use of Defined Terms.  All terms defined in this
Agreement shall have the defined meanings when used in any other agreement,
document, or certificate made or delivered pursuant to this Agreement, unless
the context otherwise requires.


                                ARTICLE II

                    SALE AND TRANSFER OF STOCK; CLOSING


              2.1.    Sale of the Shares. Subject to the terms and conditions
of this Agreement, at the Closing, Sellers shall sell, transfer, and deliver
to Fourth, and Fourth shall purchase, all of the Shares for the Purchase
Price.


              2.2.    Purchase Price. (a)  The Purchase Price for all of the
Shares shall be the sum of:

                      (i)       the Tangible Book Value of the Bank at the
              Effective Time;

                      (ii)      $9,300,000 with respect to the Bank's credit
              card receivables;

                      (iii)     one percent of the aggregate unpaid principal
              balance at the Effective Time of loans secured by fixed-rate
              mortgages having fully amortizing original terms of 15 years or
              less, excluding loans originated after October 31, 1993;

                      (iv)      six percent of the aggregate unpaid principal
              balance at the Effective Time of loans secured by fixed-rate
              mortgages having fully amortizing original terms of more than 15
              years but not more than 30 years, excluding loans originated after
              October 31, 1993;

                      (v)       two percent of the aggregate unpaid principal
              balance at the Effective Time of loans secured by variable rate
              mortgages, excluding loans originated after October 31, 1993;

                      (vi)      the amount of unamortized discount on the
              mortgages included in (iii), (iv), and (v) above;

                      (vii)     0.65% of the aggregate unpaid principal balance
              at the Effective Time of loans serviced by Bank prior to March 1,
              1993 on which the Bank performs mortgage servicing (other than
              loans serviced for the account of Bank), one percent of such
              balance on such loans originated on or after March 1, 1993 secured
              by fixed or adjustable rate mortgages of fully amortizing original
              terms of at least ten but not more than 15 years, and 1.25% of
              such balance on such loans originated on or after March 1, 1993,
              secured by fixed or adjustable rate mortgages having original
              fully amortizing terms of more than 15 but not more than 30 years;

                      (viii)    the remainder obtained by subtracting the
              Required Reserve (as hereinafter defined) from the Bank's actual
              loan loss reserve account (including its unallocated loan loss
              reserve) at the Effective Time.  "Required Reserve" means
              $2,700,000 as adjusted by the amount by which the Bank's loan loss
              reserve account (including its unallocated loan loss reserve)
              would have to be adjusted at the Effective Time under normal
              prudent banking practice to reflect aggregate changes of at least
              $500,000 occurring subsequent to October 31, 1993 in the quality
              of commercial and energy loans held by the Bank on October 31,
              1993 or originated since October 31, 1993 and not reviewed in
              advance by Fourth; provided, that no such change in the quality of
              a loan shall be included in this calculation to the extent such
              change has been reflected in the calculation of the Tangible Book
              Value of the Bank at the Effective Time, or if such change is less
              than $25,000;

                      (ix)      to the extent not otherwise reflected in the
              calculations of the Tangible Book Value of the Bank, the amount,
              either positive (if the aggregate fair market value exceeds book
              value) or negative (if the aggregate fair market value is less
              than book value), by which the aggregate fair market value of the
              Bank's Securities Portfolio at the Effective Time differs from the
              aggregate book value of the Securities Portfolio on such date;

                      (x)       $11,000,000, with respect to the Bank's deposit
              balances;

                      (xi)      $10,500,000, with respect to the Bank's net
              operating loss carryforward at the Effective Time; 

                      (xii)     the difference, positive (in the case of a rise
              in the yield curve) or negative (in the case of a decline in the
              yield curve), between the aggregate book value of all of the
              Bank's Time Deposits at the Effective Time and the aggregate value
              of such deposits after repricing them to the Treasury yield curve
              at the Effective Time; and

                      (xiii)    $1,400,000, representing the aggregate premiums
              attributable to the Sayre, Clinton, Thomas, and Beaver branches of
              the Bank.

              
              2.3.    Additional Adjustments to Purchase Price. (a) The
percentages specified in subparagraphs (iii) and (iv) of Section 2.2 were
calculated using the following yields and spreads as of August 31, 1993:

                                              15 year        30 year
                                              -------        -------
              Bank's average portfolio yield    7.44%          8.79%
              FNMA required 30-day yield        6.19%          6.66%
                                              -------        -------
              Spread                            1.25%          2.13%

If, at the Effective Time, either of such spreads has fluctuated by more than
0.25%, the applicable percentages in subparagraphs (iii) and (iv) of Section
2.2(a) will be adjusted up (if the spread has widened) or down (if the spread
has narrowed) by 1/4 of one percent for each full 1/8 of one percent change in
the spread, in the case of loans with an original term of 15 years or less,
and by 3/8 of one percent for each full 1/8 of one percent change in the
spread, in the case of loans with an original term of more than 15 but not
more than 30 years.


              (b)     The amount of the Purchase Price will be increased by the
aggregate amount, if any, the Tangible Book Value of the Bank at the Effective
Time has been reduced by any restructuring charge or charges that the Bank
shall have recorded on its books as the result of the anticipated effects of
the Purchase, none of which the Bank shall be obligated to take, and all of
which shall have been approved in advance in writing by Fourth to the extent
permitted by Law.

              2.4.    Post-Closing Adjustments.  (a) Unless otherwise
specifically provided herein, each component of the Purchase Price shall be
calculated as of the Effective Time; provided, however, that if any element of
the Purchase Price cannot be calculated accurately as of the Effective Time,
such items shall be calculated as of the end of the month preceding the
Effective Time.  Any element of the Purchase Price so calculated shall be
adjusted to reflect the accurate amount as of the Effective Time and Sellers
and Fourth agree to enter into mutually  agreeable arrangements for the final
adjustment and the payment or repayment of the net amount thereof with
interest from the Effective Time at four percent per year within five business
days after Sellers deliver to Fourth a written statement setting forth in
reasonable detail all proposed price adjustments and the basis of calculating
each.


              (b)     Upon completion of the 1994 consolidated corporate income
tax return of LSB, LSB shall notify Fourth of the amount of the final net
operating loss carryforward of the Bank at the Effective Time.  To the extent
any payment shall be owing to Fourth pursuant to the formula set forth in
clause (ii) and the second sentence of Section 7.5(a) and regardless of
whether Sellers exercise the option referred to in Section 7.5(c), LSB shall
make such payment to Fourth no later than the due date of LSB's 1994
consolidated federal income tax return (including extensions). 



              2.5.    Closing.  The Closing shall take place at the offices of
Foulston & Siefkin, 700 Fourth Financial Center, Wichita, Kansas, at 10:00
a.m., or at such other time or place as the parties may agree, on a date
selected by Fourth upon giving reasonable notice to Sellers, which, unless
otherwise agreed, shall be on the 15th day (or the closest Friday if the 15th
is not a Friday) of the month in which the final Regulatory Approval is
obtained and in which all required waiting periods expire if such earliest
legal closing date is during the first 15 days of the month and on the last
business day of the month if the earliest legal  closing  date  occurs  after
the 15th day of a month.  The parties agree to exert their best efforts to 
cause the Closing to occur on or before June 30, 1994.


              2.6.    Closing Deliveries.  At the Closing:


                      a.        Sellers shall deliver to Fourth:

                                (i)     certificates representing all of the
                      Shares, endorsed for transfer to Fourth, free and clear
                      of all encumbrances, liens, security interests, claims,
                      and equities whatsoever; 
              
                                (ii)    such other documents including
                      officers' certificates as may be required by this
                      Agreement or reasonably requested by Fourth; and

                                (iii)   the opinion of Housley Goldberg &
                      Kantarian, P.C., counsel to Sellers and the Bank,
                      substantially in the form of Exhibit "A" hereto.


                      b.        Fourth shall deliver to Sellers:

                                (i)     immediately available funds in the
                      total amount of the Purchase Price;

                                (ii)    such documents including officers'
                      certificates as may be required by this Agreement or
                      reasonably requested by Sellers; and

                                (iii)   the opinion of Foulston & Siefkin,
                      counsel to Fourth, substantially in the form of Exhibit
                      "B" hereto.


                      c.        BANK IV and Northwest Tower Limited Partnership
              shall execute and deliver a real estate lease substantially in the
              form of Exhibit "C" hereto pursuant to which Bank will lease from
              Northeast Tower Limited Partnership certain first-floor and other
              space in the Equity Tower in Oklahoma City for a ten-year term,
              with renewal options and options to rent additional space in such
              building.


                      Contemporaneously with the Purchase, the Bank shall be
              merged into BANK IV pursuant to the Bank Merger Agreement. 


              2.7.    Option to Acquire Certain Loans.   Sellers shall have the
option, but not the obligation, to acquire any loan owned by the Bank that has
been charged off or written down for a purchase price equal to the net book
value of each loan that has been written down and for a purchase price of
$1.00 in the case of each loan that has been charged off.  


              2.8.    Retained Assets, Retained Corporations, and Certain
Loans.  Subject to all of the closing conditions set forth in Sections 5.1 and
5.2 having occurred and continuing in effect, Sellers shall purchase the
Retained Assets from the Bank at the Effective Time for the aggregate book
value thereof as of the Effective Time (or $1.00 in the case of each loan that
has been charged off), and Sellers shall purchase all of the capital stock of
all of the Retained Corporations from the Bank not later than the business day
immediately preceding the Effective Time for the aggregate book value thereof
as of such date.  Each such purchase shall be effected by the payment to the
Bank of immediately available funds.  All sales by the Bank of OREO Properties
shall be pursuant to a real estate contract substantially in the form of
Exhibit "D" hereto.



                                ARTICLE III

                         AGREEMENTS OF THE PARTIES


              3.1.    Agreements of Fourth.
           
                 a.    Prior to the Effective Time, Fourth,
          separately and with Sellers, shall use its best efforts
          in good faith to take or cause to be taken as promptly
          as practicable all such steps as shall be necessary to
          obtain all of the Required Approvals.


                 b.    Fourth shall promptly prepare and file all
          applications necessary to obtain the Required Approvals
          and shall afford Sellers at least four days'
          opportunity to review and comment upon the drafts of
          such applications prior to the filing thereof.


                 c.    Fourth shall observe the confidentiality
          obligations set forth in Section 3.2.c, below.


                 d.    Fourth shall consult with Sellers prior to
          issuing any press release or other planned public
          statement regarding the subject matter of this
          Agreement or the termination thereof as to the contents
          of such press release or statement.


                 e.    Fourth agrees to take such action as may
          be necessary to cause BANK IV to be well capitalized
          upon the consummation of the transactions contemplated
          by this Agreement at and immediately following the
          Effective Time.


                 f.    Fourth agrees to provide such information
          as LSB may reasonably request in connection with the
          preparation of material for the conduct of a meeting of
          LSB's stockholders to approve this Agreement, and such
          information furnished by Fourth will not contain any
          untrue statement of a material fact or omit to state a
          material fact required to be stated therein or
          necessary in order to make the statements therein, in
          light of the circumstances under which they were made,
          not misleading.


                 g.    Following the Closing, in the event
          Sellers or any of their Subsidiaries, officers,
          directors, or affiliates shall be called upon to
          provide an indemnity pursuant to the provisions of this
          Agreement, or should otherwise be called upon to take
          or defend against legal action with respect to matters
          occurring prior to the Effective Time, Fourth shall
          permit Sellers to examine (subject to reasonable
          limitations) the former records of the Bank or the
          Corporations.


                 h.  BANK IV shall reimburse LSB for all out-of-
          pocket  COBRA liabilities incurred by LSB with respect
          to employees of the Bank at the Effective Time who are
          terminated after the Effective Time by BANK IV to the
          extent not paid or reimbursed by re-insurance or stop
          loss coverage; provided, however that such
          reimbursement shall be net of all COBRA premiums paid
          by such employees after the Effective Time and net of
          the aggregate amount of all Bank employee forfeitures
          under the Bank's cafeteria plan.
          

          3.2.   Agreements of Sellers.


                 a.   Prior to the Closing, except with respect
          to those commitments binding as of the date of this
          Agreement described in an exhibit to the Disclosure
          Statement, or as otherwise provided in this Agreement,
          Sellers shall not, without the prior written consent of
          Fourth which shall not unreasonably be withheld, permit
          any of the Corporations to:

                      (1)  Amend its articles or certificate of
                 incorporation, bylaws, or other charter
                 documents, make any change in its authorized,
                 issued, or outstanding capital stock, grant any
                 stock options or right to acquire shares of any
                 class of its capital stock or any security
                 convertible into any class of capital stock,
                 purchase, redeem, retire, or otherwise acquire
                 (otherwise than in a fiduciary capacity) any
                 shares of any class of its capital stock or any 
                 security convertible into any class of its
                 capital stock, or agree to do any of the
                 foregoing;

                      (2)  Declare, set aside, or pay any
                 dividend or other distribution in respect of any
                 class of its capital stock;

                      (3)  Adopt, enter into, or amend materially
                 any employment contract or any bonus, stock
                 option, profit sharing, pension, retirement,
                 incentive, or similar employee benefit program
                 or arrangement or grant any salary or wage
                 increase, except (a) normal individual increases
                 in compensation to employees in accordance with
                 established employee procedures of the
                 Corporations; (b) the Fourth Financial
                 Corporation Acquisition Severance Schedule
                 previously furnished to Seller; and (c)
                 severance agreements to be performed by Sellers
                 without any obligation of the Bank or Fourth;

                      (4)  Incur any indebtedness for borrowed
                 money (except for federal funds, repurchase
                 agreements entered into in the ordinary and
                 usual course of business, deposits received by
                 the Bank, endorsement, for collection or
                 deposit, of negotiable instruments received in
                 the ordinary and usual course of business, and
                 issuance of letters of credit by the Bank in the
                 ordinary and usual course of business), assume,
                 guarantee, endorse, or otherwise as an
                 accommodation become liable or responsible for
                 obligations of any other individual, firm, or
                 corporation;

                      (5)  Pay or incur any obligation or
                 liability, absolute or contingent, other than
                 liabilities incurred in the ordinary and usual
                 course of business of the Corporations;

                      (6)  Except for transactions in the
                 ordinary and usual course of business of the
                 Bank, mortgage, pledge, or subject to lien or
                 other encumbrance any of its properties or
                 assets;

                      (7)  Except for transactions in the
                 ordinary and usual course of business of the
                 Bank (including, without limitation, sales of
                 assets acquired by the Bank in the course of
                 collecting loans) or as permitted by this
                 Agreement, sell or transfer any of its 
                 properties or assets or cancel, release, or
                 assign any indebtedness owed to it or any claims
                 held by it;

                      (8)  Make any investment of a capital
                 nature in excess of $25,000 for any one item or
                 group of similar items either by the purchase of
                 stock or securities (not including bonds or
                 collateralized mortgage obligations purchased in
                 the ordinary and usual course of business by the
                 Bank), contributions to capital, property
                 transfers, or otherwise, or by the purchase of
                 any property or assets of any other individual,
                 firm, or corporation other than certain planned
                 improvements being made to the Bank's Classen
                 and Portland branches;

                      (9)  Enter into any other agreement not in
                 the ordinary and usual course of business;

                      (10) Merge or consolidate with any other
                 corporation, acquire any stock (except in a
                 fiduciary capacity), solicit any offers for any
                 Bank Stock, or a substantial portion of the
                 assets of any of the Corporations or, except in
                 the ordinary course of business, acquire any
                 assets of any other person, corporation, or
                 other business organization, or enter into any
                 discussions with any person concerning, or agree
                 to do, any of the foregoing;

                      (11) Own at the Effective Time any bonds,
                 notes, loans, or other investment securities of
                 any kind which are not expressly enumerated in
                 the definition of "Securities Portfolio" in
                 Section 1.1 of this Agreement other than Bank's
                 investments in the other Corporations; or

                      (12) Except as permitted or contemplated by
                 this Agreement, enter into any transaction or
                 take any action which would, if effected prior
                 to the Effective Time, constitute a material
                 breach of any of the representations,
                 warranties, or covenants contained in this
                 Agreement.


                 b.   Except as otherwise provided in this
          Agreement, prior to the Effective Time, each Seller
          shall use its reasonable best efforts to cause each of
          the Corporations to conduct its respective business in
          the ordinary and usual course as heretofore conducted
          and to use its reasonable best efforts (1) to preserve
          its business and business organization intact, (2) to
          keep available to BANK IV the services of the present 
          officers and employees of the Bank, (3) to preserve the
          good will of customers and others having business
          relations with the Bank, (4) to maintain its properties
          in customary repair, working order and condition
          (reasonable wear and tear excepted), (5) to comply in
          all material respects with all Laws applicable to it
          and the conduct of its businesses, (6) to keep in force
          at not less than their present limits all existing
          policies of insurance, (7) to make no material changes
          in the customary terms and conditions upon which it
          does business, (8) to continue its current practice of
          selling loans secured by fixed rate mortgages on a
          servicing-retained basis, (9) to duly and timely file
          all reports, tax returns, and other material documents
          required to be filed with federal, state, local and
          other authorities, and (10) unless it is contesting the
          same in good faith and has established reasonable
          reserves therefor, to pay when required to be paid all
          material taxes indicated by tax returns so filed or
          otherwise lawfully levied or assessed upon it or any of
          its properties and to withhold or collect and pay to
          the proper governmental authorities or hold in separate
          bank accounts for such payment all taxes and other
          assessments which it believes in good faith to be
          required by law to be so withheld or collected.


                 c.   Prior to the Effective Time, Sellers shall
          cause the Corporations, to the extent permitted by Law,
          to give Fourth and its counsel and accountants full
          access, during normal business hours and upon
          reasonable notice, to their respective properties,
          books, and records, and to furnish Fourth during such
          period with all such information concerning their
          affairs as Fourth may reasonably request.  Except for
          matters expressly disclosed in the Disclosure
          Statement, the availability or actual delivery of
          information about the Corporations to Fourth shall not
          affect the covenants, representations, and warranties
          of Sellers contained in this Agreement.  Except for
          information disclosed in the course of obtaining 
          Required Approvals, Fourth shall treat as confidential
          all confidential information disclosed to it by Sellers
          or the Corporations in the same manner as Fourth treats
          similar confidential information of its own and, if
          this Agreement is terminated, Fourth shall continue to
          treat all such confidential information obtained
          through such disclosure and not otherwise known to
          Fourth or already in the public domain, as confidential
          and shall return such documents theretofore delivered
          by Sellers to Fourth as Sellers shall request.
 

                 d.   Sellers shall cause the Corporations,
          separately and jointly with each other and with Fourth,
          to each use reasonable efforts in good faith to take or
          cause to be taken as promptly as practicable all such
          steps as shall be necessary to obtain all Required
          Approvals as promptly as practicable.


                 e.   Sellers agree not to sell, pledge,
          encumber, or otherwise hypothecate or transfer any
          shares of Bank Stock prior to the Effective Time.


                 f.   At the Closing, BANK IV, as lessee, and 
          Northwest Tower Limited Partnership, as lessor, shall
          execute and deliver a real estate lease substantially
          in the form of Exhibit "C," to this Agreement.  No
          party hereto shall be liable to any other party if such
          lessor fails to execute such lease.

                 g.   Sellers agree to cause the Corporations to
          cooperate with Fourth in Fourth's efforts to obtain
          current title evidence or insurance, environmental
          assessment reports, and surveys on such of the
          Corporations' real properties as Fourth may desire.

                 h.   Sellers will take, and will cause the Bank
          to take, all such corporate action as may be required
          to authorize, execute, and perform the Bank Merger
          Agreement.
          

                 i.   LSB agrees:  

                      (1)  To file all required federal, state,
                 and local income tax returns in a timely manner
                 for 1993 and 1994 or obtain appropriate
                 extensions for such filings and to pay, when
                 due, all income taxes due for such periods;

                      (2)  To give Fourth written notice promptly
                 of any issues raised by any taxing authorities
                 which might reasonably result in an increase in
                 the income tax liabilities of the Bank for any
                 period in which it is or was a member of the
                 "Group" defined in Section 4.1.k of this
                 Agreement or which might reasonably affect the
                 amount of the Bank's net operating loss;

                      (3)  To consult with Fourth and BANK IV
                 about the resolution of any such issues and not
                 to settle any such issues without giving Fourth
                 an opportunity to assume responsibility for the
                 resolution of such issues, at Fourth's expense,
                 if the effect of such settlement would be to
                 increase the liability of Fourth or any of its
                 affiliates for any tax for any period beginning
                 after the Effective Time or affect the amount of
                 the Bank's net operating loss unless Sellers
                 agree to pay and do pay to Fourth the full
                 amount of such increase in liability grossed up
                 for any federal or state tax attributable to
                 such payment; and 

                      (4)  That all existing income tax sharing
                 or allocation agreements or arrangements of any
                 kind between the Corporations and LSB or any
                 other member of such Group, whether or not in
                 writing, shall automatically be terminated at
                 the Effective Time and no further payments shall
                 be made by Bank thereunder except to the extent
                 the amount thereof has been taken into account
                 in calculating the Tangible Book Value of the
                 Bank.


                                ARTICLE IV

                      REPRESENTATIONS AND WARRANTIES


          4.1.   Representations and Warranties of Sellers. 
Except as expressly disclosed in the Disclosure Statement,
Sellers jointly and severally represent and warrant to Fourth as
follows:


                 a.   Organization, Good Standing, and Authority. 
          Each Seller is a savings and loan holding company duly
          registered pursuant to the federal Home Owners' Loan
          Act.  Each of the Corporations is a corporation or
          savings bank duly organized, validly existing, and in
          good standing under the laws of the jurisdiction of 
          its incorporation, and each has all requisite corporate
          power and authority to conduct its business as it is
          now conducted, to own its properties and assets, and to
          lease properties used in its business.  None of the
          Corporations is in violation of its charter documents
          or bylaws, or of any applicable Law in any material
          respect, or in default in any material respect under
          any material agreement, indenture, lease, or other
          document to which it is a party or by which it is
          bound.  The deposits of the Bank are insured by the
          FDIC to the extent provided by the Federal Deposit
          Insurance Act and the Bank has paid all assessments and
          filed all reports required to be filed under the
          Federal Deposit Insurance Act of which failure to do so
          would have a material adverse effect upon the Bank.


                 b.   Binding Obligations; Due Authorization. 
          This Agreement constitutes the valid and binding
          obligation of each Seller, enforceable against it in
          accordance with the terms hereof, except as limited by
          applicable bankruptcy, insolvency, reorganization,
          moratorium, or other similar laws and equitable
          principles affecting creditors' rights generally.


                 c.   Absence of Default.  The execution and the
          delivery of this Agreement, the sale of the Shares, and
          the consummation of the other transactions contemplated
          hereby, and the fulfillment of the terms hereof will
          not (1) conflict with, or result in a breach of the
          terms, conditions, or provisions of, or constitute a
          default under the organizational documents or bylaws of
          any of the Corporations or under any agreement or
          instrument under which any of the Corporations or
          either Seller is obligated, or (2) violate any Law to
          which any of the Corporations or any Seller is subject.


                 d.   Subsidiaries.  LSB is the owner of all of
          the issued and outstanding capital stock of all classes
          of Prime.  The only Subsidiaries of the Bank are the
          following:


                 Name                       State of Incorporation
                 ----                       -----------------------
          Northwest Financial Corporation           Oklahoma
          Northwest Energy Enterprises, Inc.        Oklahoma
          Credit Card Center, Inc.                  Oklahoma
          Equity Financial Service Corp.            Oklahoma
          United BankCard, Inc.                     Oklahoma
          Northwest Capital Corporation             Oklahoma


                 e.   Capitalization.  The Bank is authorized to
          issue 1,000,000 shares of capital stock, par value $.01
          per share, of which 100,000 shares are issued and
          outstanding.  Prime is the owner, free and clear of all
          encumbrances, liens, security interests, and claims
          whatsoever, of all 100,000 shares of Bank Stock.  The
          capitalization of each of the Bank's Subsidiaries
          excluding the Retained Corporations, is as follows:



                                                Number of Shares
                                                ----------------
          Name                            Par Value   Issued   Outstanding
          ----                            ---------   ------   -----------

                                                        
          Credit Card Center, Inc.          $   10.00  6,700     5,200
          Equity Financial Service
           Corp.                                 1.00  1,000     1,000
          United BankCard, Inc.              1,000.00    250       250

          

                 f.   Charter Documents.  True and correct copies
          of the charter documents and bylaws of each of the
          Corporations, with all amendments thereto, are included
          in the Disclosure Statement as Exhibits "E-1" to "E-8."


                 g.   Options, Warrants, and Other Rights.  None
          of the Corporations has outstanding any options,
          warrants, or rights of any kind requiring it to sell or
          issue to anyone any capital stock of any class and none
          of the Corporations has agreed to issue or sell any
          additional shares of its capital stock.


                 h.   Financial Statements.  Included in the
          Disclosure Statement as Exhibits "H-1" through "H-6"
          are  copies of the following financial statements, all
          of which are true and complete in all material respects
          and have been prepared in all material respects in
          accordance with GAAP and all applicable regulatory
          accounting principles consistently followed throughout
          the periods indicated, subject in the case of interim
          financial statements, to normal recurring year-end
          adjustments (the effect of which will not, 
          individually or in the aggregate, be materially
          adverse) and the absence of notes (which if presented
          would not differ materially from those included in the
          most recent year-end financial statements):


                      (1)  Audited Consolidated Financial
                 Statements of the Bank as of December 31, 1992,
                 and 1991, and for the fiscal years then ended
                 with auditors' report thereon and notes thereto,
                 which have been examined by Ernst & Young,
                 independent certified public accountants;

                      (2)  Thrift Financial Reports filed by the
                 Bank with the OTS for the quarters ended
                 December 31, 1992, March 31, 1993, June 30,
                 1993, and September 30, 1993; and

                      (3)  Unaudited financial statements of the
                 Bank as of October 31, 1993 and for the period
                 then ended.

          As soon as practicable between the date hereof and the
          Effective Time, Sellers will deliver to Fourth copies
          of monthly operating statements of the Bank and of all
          reports filed by any of the Corporations with any
          regulatory agencies.  The books of account of each of
          the Corporations and each of the Financial Statements
          fairly and correctly reflect and, when delivered, will
          reflect in all material respects in accordance with
          GAAP and all applicable rules and regulations of
          regulatory agencies applied on a consistent basis, the
          respective financial conditions and results of
          operations of each of the Corporations (except for the
          absence in the monthly operating statements of the Bank
          of certain information and footnotes normally included
          in finan#ial statements prepared in accordance with
          GAAP).  There have been, and prior to the Effective
          Time there will be, no material adverse changes in the
          financial condition of the Corporations from December
          31, 1992, other than changes made in the usual and
          ordinary conduct of the businesses of the Corporations,
          none of which has been or will be materially adverse
          and all of which have been or will be recorded in the
          books of account of the Corporations; and except as
          specifically permitted by this Agreement, there have
          been, and prior to the Effective Time there will be, no
          substantial adverse changes in the respective
          businesses, assets, properties, or liabilities,
          absolute or contingent, of any of the Corporations, or
          in their respective condition, financial or otherwise,
          from the date of the most recent of the Financial
          Statements that has  been delivered to Fourth on the
          date hereof other than changes occurring in the usual
          and ordinary conduct of the business of the
          Corporations, none of which has been or will be
          materially adverse and all of which have been or will
          be recorded in the respective books of account of the
          Corporations.  None of the Corporations has any
          contingent liabilities, other than letters of credit
          and similar obligations of the Bank incurred in the
          ordinary course of business, that are not described in
          or reserved against in the Financial Statements listed
          above.


                 i.   Real Properties.  Exhibit "I" to the
          Disclosure Statement is a complete list of all real
          estate owned or leased by any of the Corporations. 
          Each Corporation has good and marketable title in fee
          simple to all lands and buildings described in the
          Disclosure Statement as being owned by it, free and
          clear of all liens, encumbrances, and charges, except
          for Permitted Encumbrances.  All leases of real
          property to which any of the Corporations is a party as
          lessee, complete copies of each of which with all
          amendments thereto are included in Exhibit "I" to the
          Disclosure Statement, are each valid and enforceable in
          accordance with their respective terms except as
          enforcement may be limited by bankruptcy, insolvency,
          reorganization, moratorium, or similar Laws and
          equitable principles affecting creditors' rights
          generally, and there has been no material default by
          any party thereto.  No zoning ordinance prohibits,
          interferes with, or materially impairs the usefulness
          of any of the Facilities owned or used by any
          Corporation for the purposes for which it is now being
          used; and all the Facilities owned or leased by any of
          the Corporations are in good operating condition and
          repair, normal wear and tear excepted.


                 j.   Personal Property.  Except for leased
          properties, each of the Corporations has good and
          marketable title to all of the machinery, equipment,
          materials, supplies, and other property of every kind,
          tangible or intangible, contained in its offices and
          other facilities or shown as assets in its records and
          books of account, free and clear of all liens,
          encumbrances, and charges.  All leases of personal
          property to which any of the Corporations is a party as
          lessee are valid and enforceable in accordance with
          their terms, and there has been no material default by
          any party thereto.  The material items of personal
          property owned or leased by any of the Corporations are
          generally in good operating condition, normal wear and
          tear excepted.  


                 k.   Taxes.  LSB, Prime, the Bank, the
          Corporations, and the Retained Corporations are members
          of the same "affiliated group" (the "Group"), as
          defined in Section 1504(a)(1) of the Code. Each member
          of the Group has filed or caused to be filed, or a
          filing was made on its behalf, all tax returns and
          reports required to have been filed by or for it, and
          all material information set forth in such returns or
          reports is accurate and complete.  Each member of the
          Group has paid or made adequate provision for all
          taxes, additions to tax, penalties, and interest for
          all periods covered by those returns or reports.  There
          are no material unpaid taxes, additions to tax,
          penalties, or interest due and payable by any member of
          the Group, except for taxes and any such related
          liabilities being contested in good faith and disclosed
          in Exhibit "K" to the Disclosure Statement.  Each
          member of the Group has collected or withheld all
          amounts required to be collected or withheld by it for
          any taxes, and all such amounts have been paid to the
          appropriate governmental agencies or set aside in
          appropriate accounts for future payment when due.  Each
          member of the Group is in material compliance with, and
          its records contain all information and documents
          (including, without limitation, IRS Forms W-9)
          necessary to comply in all material respects with
          applicable information reporting and tax withholding
          requirements under federal, state, and local laws,
          rules, and regulations, and such records identify with
          specificity all accounts subject to backup withholding. 
          The Financial Statements fully and properly reflect, as
          of the dates thereof, the accrued taxes, additions to
          tax, penalties, and interest.  No extension of time for
          the assessment of deficiencies for any years is in
          effect.  No member of the Group has any knowledge of
          any unassessed tax deficiency proposed or threatened
          against any of them.


                 l.   Contracts.  Other than Permitted Contracts
          and agreements with customers of the Bank and with
          financial institutions entered into by the Bank in the
          ordinary course of its banking business, attached to
          the Disclosure Statement as Exhibit "L" is a list of
          all material contracts and other agreements and
          arrangements, both written and oral, to which Bank or
          any of the other Corporations is a party and which
          involve $10,000 or more, which affect or pertain to the
          operation of their respective businesses.  To the
          knowledge of Sellers, all parties thereto have in all
          material respects performed, and are in good standing
          with respect to, all the material obligations required
          to be performed under all such contracts and other 
          agreements and arrangements, and no obligation with
          respect thereto is overdue.  All of the material
          agreements of the Corporations, including without
          limitation the agreements disclosed in writing pursuant
          to this clause (l), are valid, binding, and enforceable
          in accordance with their terms, except as limited by
          applicable bankruptcy, insolvency, reorganization,
          moratorium, or similar Laws and equitable principles
          affecting creditors' rights generally.  Except as
          otherwise noted in Exhibit "L" to the Disclosure
          Statement, no material contract, lease, or other
          agreement or arrangement to which either Bank or one of
          the other Corporations is a party or as to which any of
          their assets is subject requires the consent of any
          third party in connection with this Agreement.  Except
          as described in Exhibit "L" to the Disclosure
          Statement, neither any Corporation nor any Seller has
          any knowledge of any threatened cancellation of, any
          outstanding disputes or default under, or of any basis
          for any claim of breach or default of, any material
          lease, contract, or other agreement or arrangement to
          which any of the Corporations is a party.  Except for
          Permitted Contracts and except as set forth in Exhibit
          "L" to the Disclosure Statement, neither the Bank nor
          any of the other Corporations is a party to:

                      (1)  Any contract for the purchase or sale
                 of any materials or supplies having an aggregate
                 purchase or sale price in excess of $10,000
                 which contains any escalator, renegotiation, or
                 redetermination clause or which commits it for a
                 fixed term;

                      (2)  Any contract of employment with any
                 officer or employee not terminable at will
                 without liability on account of such
                 termination;

                      (3)  Any management or consultation
                 agreement not terminable at will without
                 liability on account of such termination;

                      (4)  Any license or royalty agreement
                 having an aggregate future commitment to pay at
                 least $10,000, or union agreement, or loan
                 agreement in which any of the Corporations is
                 the borrower;

                      (5)  Any contract, accepted order, or
                 commitment for the purchase or sale of
                 materials, services, or supplies having a total
                 remaining contract price in excess of $10,000;

                      (6)  Any contract containing any
                 restrictions on any party thereto competing with
                 the Bank, any of the other Corporations, or any
                 other person in the business of banking or
                 activities relating to banking;

                      (7)  Any other agreement which materially
                 affects the business, properties, or assets of
                 either Bank or one of the other Corporations, or
                 which was entered into other than in the
                 ordinary and usual course of business; or

                      (8)  Any letter of credit or commitment to
                 make any loan or group of loans to related
                 parties in an amount in excess of $500,000.

          None of LSB, Prime, or any of the Corporations has any
          knowledge based upon which it has formed a conclusion
          that a material loss is reasonably anticipated with
          respect to any of the agreements described in clause
          "l."


                 m.   Labor Relations; Employees; ERISA.  None of
          the Corporations is a party to or affected by any
          collective bargaining agreement, nor is any Corporation
          a party to any pending or, to the knowledge of Sellers,
          threatened labor dispute, organizational efforts, or
          labor negotiations.  Each of the Corporations has
          complied in all material respects with all applicable
          Laws relating to the employment of labor, including,
          but not limited to, the provisions thereof relating to
          wages, hours, collective bargaining, payment of social
          security taxes, and equal employment opportunity, the
          violation of which would have a materially adverse
          impact on their respective businesses.  None of the
          Corporations is liable for any arrears of wages or any
          taxes or penalties for failure to comply with any of
          the foregoing in an amount which would have a material
          adverse effect on the Bank or any of the Corporations. 
          None of the Corporations has any written or oral
          retirement, pension, profit sharing, stock option,
          bonus, or other employee benefit plan or practice other
          than group health and accident insurance except that
          Bank employees participate in Bank's and LSB's
          cafeteria plans, which include health, disability
          insurance (long and short term), life insurance, and
          supplemental life insurance, and LSB's 401(k) plan, and
          thirteen employees in the United BankCard division of
          the Bank participate in a "frozen" 401(k) plan.  The
          Bank is in the process of attempting to terminate this
          "frozen" plan.  None of the Corporations has violated
          any of the provisions of ERISA, and none of them has
          engaged in any "prohibited transactions" as such term 
          is defined in Section 406 of ERISA in an amount which
          would have a material adverse effect on the Bank or the
          Corporations.  There is no employee of any of the
          Corporations whose employment is governed by a written
          or oral employment agreement for a specific term of
          employment.


                 n.   Government Authorizations.  Each of the
          Corporations has all permits, charters, licenses,
          orders, and approvals of every federal, state, local,
          or foreign governmental or regulatory body required in
          order to permit it to carry on its business
          substantially as presently conducted except where the
          absence thereof would not have a material adverse
          effect on the Bank or the affected Corporation.  All
          such licenses, permits, charters, orders, and approvals
          are in full force and effect, and, to the knowledge of
          the Corporations and Seller, no suspension or
          cancellation of any of them is threatened and none of
          the Corporations knows of any fact or circumstance that
          will materially interfere with or materially adversely
          affect the renewal of any of such licenses, permits,
          charters, orders, or approvals; and none of such
          permits, charters, licenses, orders, and approvals will
          be affected by the consummation of the transactions
          contemplated by this Agreement.


                 o.   Insurance.  Exhibit "O" to the Disclosure
          Statement is a complete list of all insurance policies
          presently in effect and in effect during the past three
          years.  All the insurance policies and bonds currently
          maintained by any of the Corporations are in full force
          and effect.


                 p.   Litigation.  Exhibit "P" to the Disclosure
          Statement contains a true and complete list and brief
          description of all pending or, to the knowledge of any
          of the Corporations or any Seller, threatened,
          Litigation to which any of the Corporations is or would
          be a party or to which any of their assets is or would
          be subject.  Except as described on Exhibit "P" to the
          Disclosure Statement, none of the Corporations is a
          party to any Litigation other than routine litigation
          commenced by the Bank to enforce obligations of
          borrowers in which no counterclaims for any material
          amounts of money have been asserted or, to the
          knowledge of the Corporations or any  Seller, threatened.


                 q.   Brokers or Finders.  Except for an
          agreement with Lazard Freres & Co., whose fee will be
          paid by LSB, no broker, agent, finder, consultant, or
          other party (other than legal and accounting advisors)
          has been retained by either of the Sellers or any of
          the Corporations or is entitled to be paid based upon
          any agreements, arrangements, or understandings made by
          either of the Sellers or any of the Corporations in
          connection with any of the transactions contemplated by
          this Agreement.


                 r.   Environmental Compliance.  Except as
          disclosed in Exhibit "R", to Sellers' knowledge, each
          of the Corporations is in material compliance with all
          relevant Environmental Laws and none of the
          Corporations has any material Environmental
          Liabilities.  None of the Facilities is now being used
          or, to either Seller's knowledge, has at any time in
          the past ever been used for the storage (whether
          permanent or temporary), by any of the Corporations, or
          to the knowledge of either Seller, by third parties,
          disposal, or handling of any Hazardous Materials, nor
          are any Hazardous Materials located in, on, under, or
          at any of the Facilities.  No Corporation has received
          any notice of material violation of any Environmental
          Law, or any notice of any material potential
          Environmental Liabilities with respect to any of the
          Facilities or to any other properties and assets in
          which any Corporation has had an interest. 


                 s.   Employment of Aliens.  Each Corporation is
          in material compliance with the Immigration and Control
          Act of 1986.


                 t.   Notes and Leases.  All promissory notes and
          leases owned by the Bank or any other Corporation at
          the Effective Time will represent bona fide
          indebtedness or obligations to the Bank and are and
          will be fully enforceable in accordance with their
          terms without valid set-offs or counterclaims, except
          as limited by applicable bankruptcy, insolvency,
          reorganization, moratorium, or similar Laws and
          equitable principles affecting creditors' rights
          generally; provided, however, no representation or
          warranty is made in this Agreement as to the
          collectibility of such notes and leases.


                 u.   Updating of Representations and Warranties
          .  Between the date hereof and the Effective Time,
          Sellers will promptly disclose to Fourth in writing 
          any information of which either of them has actual
          knowledge (1) concerning any event that would render
          any representation or warranty of Sellers untrue if
          made as to the date of such event, (2) which renders
          any information set forth in this Agreement or the
          Disclosure Statement no longer correct in all material
          respects, or (3) which arises after the date hereof and
          which would have been required to be included in this
          Agreement or Disclosure Statement if such information
          had existed on the date hereof.


                 v.   True at Effective Time.  Except as
          otherwise specifically provided in this Agreement, all
          of the representations and warranties of Sellers set
          forth above will be true and correct at the Effective
          Time with the same force and effect as though such
          representations and warranties had been made at the
          Effective Time.


          4.2.   Representations and Warranties of Fourth. 
Fourth represents and warrants to Sellers as follows:


                 a.   Organization, Good Standing, and Authority.
          Fourth is a corporation duly organized, validly
          existing, and in good standing under the laws of the
          State of Kansas, and has all requisite corporate power
          and authority to conduct its business as it is now
          conducted, to own its properties and assets, and to
          lease properties used in its business.  Fourth is not
          in violation of its charter documents or bylaws, or of
          any applicable Law in any material respect, or in
          default in any material respect under any material
          agreement, indenture, lease, or other document to which
          it is a party or by which it is bound.


                 b.   Binding Obligations; Due Authorization. 
          This Agreement constitutes the valid and binding
          obligations of Fourth, enforceable against it in
          accordance with its terms, except as limited by
          applicable bankruptcy, insolvency, reorganization,
          moratorium, or other similar laws and equitable
          principles affecting creditors' rights generally.  The
          execution, delivery, and performance of this Agreement
          and the transactions contemplated hereby  have been
          duly authorized by the board of directors of Fourth.


                 c.   Absence of Default.  None of the execution
          or the delivery of this Agreement, the consummation of
          the transactions contemplated hereby, or the
          fulfillment of the terms hereof, will (1) conflict 
          with, or result in a breach of the terms, conditions,
          or provisions of, or constitute a default under the
          charter documents or bylaws of Fourth or under any
          agreement or instrument under which Fourth is
          obligated, or (2) violate any Law to which it is
          subject.


                 d.   Brokers or Finders.  No broker, agent,
          finder, consultant, or other party (other than legal
          and accounting advisors) has been retained by Fourth or
          is entitled to be paid based upon any agreements,
          arrangements, or understandings made by Fourth in
          connection with any of the transactions contemplated by
          this Agreement.


                 e.   Required Approvals.  Fourth knows of no
          reason that would preclude obtaining the Required
          Approvals in a timely manner, but various persons have
          the right to object to the granting of Required
          Approvals and the various governmental agencies
          involved can be expected to conduct various types of
          economic and other analysis, any one of which may cause
          a delay or denial of a requested approval.


                 f.   Capitalization of the Bank.  Fourth will
          contribute such additional capital to BANK IV as may be
          necessary in order for BANK IV to be well capitalized
          following consummation of the Purchase, the Merger, and
          the other transactions contemplated or permitted by
          this Agreement.  Fourth has sufficient capital
          resources to be able to make such additional capital
          contribution and to perform its obligations under this
          Agreement.


                                  ARTICLE V

                            CLOSING CONDITIONS


          5.1.   Conditions to Obligations of Fourth.  The
obligations of Fourth to purchase the Shares shall be subject to
the following conditions which may, to the extent permitted by
Law, be waived by Fourth at its option:


                 a.   Absence of Litigation.  No order, judgment,
          or decree shall be outstanding restraining or enjoining
          consummation of the purchase of the Shares, the Merger,
          or any of the other transactions permitted or
          contemplated by this Agreement; and no  Litigation
          shall be pending or threatened in which it is sought to
          restrain or prohibit the purchase of the Shares, the
          Merger, or any of the other transactions permitted or
          contemplated by this Agreement or to obtain other
          substantial monetary or other relief against one or
          more of the parties hereto in connection with this
          Agreement.


                 b.   Regulatory Approvals.  All Required
          Approvals shall have been procured (and shall continue
          to be in effect) and all other requirements prescribed
          by Law shall have been satisfied.


                 c.   Minimum Tangible Book Value of Bank.  The
          Tangible Book Value of the Bank as of the Effective
          Time, without taking into account any restructuring
          charges described in Section 2.3(b) of this Agreement,
          shall be not less than $41,000,000.  Such amount shall
          be substantiated by the total consolidated
          stockholder's equity of the Bank as reflected in the
          books of record and balance sheets of the Bank.  


                 d.   Opinion of Counsel.  Fourth shall have
          received the opinion of Housley Goldberg & Kantarian,
          P.C., counsel to the Corporations and Sellers,
          substantially in the form of Exhibit "A" hereto.


                 e.   Representations and Warranties; Covenants. 
          The representations and warranties of the Sellers
          contained in this Agreement shall have been true and
          correct in all material respects on the date made and
          shall be true and correct in all material respects at
          the Effective Time as though made at such time,
          excepting any changes occurring in the ordinary course
          of business, none of which shall have been materially
          adverse, and excepting any changes contemplated or
          permitted by this Agreement.  Sellers shall have
          performed all of their obligations under this
          Agreement.


                 f.   Certificates.  Sellers shall have delivered
          to Fourth a certificate, in form and substance
          satisfactory to Fourth, dated the Effective Time and
          signed by the chief executive officer and chief
          financial officer of each of the Corporations,
          certifying in such detail as Fourth may reasonably
          request the fulfillment of the foregoing conditions.

          
                 g.   Resignations.  Sellers shall have delivered
          to Fourth the written resignations, effective at the
          Effective Time, of those officers and directors of the
          Bank and the other Corporations as Fourth shall have
          requested at least two business days prior to the
          Effective Time.


                 h.   1993 Audit Report.  Seller shall have
          delivered to Fourth a copy of the Bank's audited
          consolidated Financial Statements as of December 31,
          1993 and for the year then ended, with auditor's report
          thereon and notes thereto.


                 i.   Lease of Equity Tower.  Northwest Tower
          Limited Partnership shall have entered into a lease as
          lessor of the Equity Tower, substantially in the form
          of Exhibit "C" hereto.


                 j.   Satisfactory Environmental Reports.  Fourth
          shall have received environmental assessment reports
          covering all of the Facilities, in form and substance
          reasonably satisfactory to Fourth, which do not cause
          Fourth reasonably to conclude that there are any
          material Environmental Liabilities associated with any
          of the Facilities.


          5.2.   Conditions to Obligations of Sellers.  The
obligation of Sellers to sell the Shares and to consummate the
transactions contemplated hereby shall be subject to the
following conditions which may, to the extent permitted by Law,
be jointly waived by Sellers at their option:


                 a.   General.  Each of the conditions specified
          in clauses a and b of Section 5.1 shall have occurred
          and be continuing.


                 b.   Representations and Warranties; Covenants. 
          The representations and warranties of Fourth contained
          in this Agreement shall have been true and correct in
          all material respects on the date made and shall be
          true and correct in all material respects at the
          Effective Time as though made at such time.  Fourth
          shall have duly performed all of its obligations under
          this Agreement.


                 c.   Minimum Purchase Price.  The Purchase Price
          shall be not less than $92,000,000, which minimum
          amount shall be reduced by the amount of the option
          price described in clause c of Section 7.5 if such
          option has been exercised by Sellers.


                 d.   Fairness Opinion.  LSB shall have received
          by February 10, 1994, a written opinion from Lazard
          Freres & Co. to the effect that the Purchase Price is
          fair to Sellers from a financial point of view.


                 e.   Opinion of Counsel.  Sellers shall have
          received the opinion of Foulston & Siefkin, counsel to
          Fourth, substantially in the form of Exhibit "B"
          hereto.


                 f.   Certificates.  Fourth shall have delivered
          to Sellers a certificate, in form and substance
          reasonably satisfactory to Sellers, dated the Effective
          Time and signed by the chief executive officer and
          chief financial officer of Fourth, certifying in such
          detail as Sellers may reasonably request, the accuracy
          of the representations and warranties and the
          fulfillment of the covenants of Fourth hereunder.


                 g.   LSB's Stockholder Approval.  The
          stockholders of LSB shall have approved this Agreement
          and the Purchase.


                 h.   Change in Treasury Regulations.  The United
          States Department of the Treasury shall not have
          finally adopted the proposed changes to the Treasury
          Regulations, at Sec. 1.1502-33 (56 FR 47379, Sept. 19,
          1991, revised 57 FR 53550, Nov. 12, 1992, revised, 57
          FR 62251, Dec. 30, 1992), nor shall have any other
          change in the Law occurred with the effect, in the
          reasonable judgment of Sellers based upon the advice of
          their tax advisors, that the tax basis of LSB or Prime
          in the Bank Stock shall be significantly reduced.


                 i.   Conveyance of Retained Corporations and
          Retained Assets.  On or before the Effective Time, all
          of the Retained Assets and all of the Bank's interests
          in the Retained Corporations shall have been
          transferred to Sellers or their designee or designees
          as provided in this Agreement.


                                ARTICLE VI

                         TERMINATION OF AGREEMENT


          6.1.   Mutual Consent; Termination Date.  This
Agreement shall terminate at any time when the parties hereto
mutually agree in writing.  This Agreement may also be terminated
at the election of either Sellers (acting jointly) or Fourth,
upon written notice from the party electing to terminate this
Agreement to the other party if, without fault on the part of the
party electing to terminate this Agreement, there has been a
denial of a Required Approval or the imposition of one or more
terms (not including a requirement to divest a single branch of
the Bank not located in Oklahoma City) reasonably deemed onerous
by Fourth or Sellers as a condition to obtaining a Regulatory
Approval.  Unless extended by written agreement of the parties,
this Agreement shall terminate if all conditions to the
obligations of the parties hereto have not occurred on or before
June 30, 1994.


          6.2.   Election by Fourth.  This Agreement shall
terminate at Fourth's election, upon written notice from Fourth
to Sellers if any one or more of the following events shall occur
and shall not have been remedied to the satisfaction of Fourth
within 30 days after written notice is delivered to Seller:  (a)
there shall have been any uncured material breach of any of the
obligations, covenants, or warranties of the Sellers hereunder;
or (b) there shall have been any written representation or
statement furnished by the Sellers hereunder which at the time
furnished is false or misleading in any material respect in
relation to the size and scope of the transactions contemplated
by this Agreement.


          6.3.   Election by Sellers.  This Agreement shall
terminate at the election of Sellers (acting jointly) upon
written notice from Sellers to Fourth if any one or more of the
following events shall occur and shall not have been remedied to
its satisfaction within 30 days after written notice is delivered
to Fourth:  (a) there shall have been any uncured material breach
of any of the obligations, covenants, or warranties of Fourth
hereunder; or (b) there shall have been any written
representation or statement furnished by Fourth hereunder which
at the time furnished is false or misleading in any material
respect in relation to the size and scope of the transactions
contemplated by this Agreement.


                                ARTICLE VII

                              INDEMNIFICATION


          7.1.   Effect of Closing.  Except as provided in this
Section, closing of the transactions contemplated by this
Agreement shall not prejudice any claim for damages which any of
the parties hereto may have hereunder in law or in equity, due to
an uncured material default in observance or the due and timely
performance of any of the covenants and agreements herein
contained or for the material breach of any warranty or
representation hereunder, unless such observance, performance,
warranty, or representation is specifically waived in writing by
the party making such claim.  If any warranty or representation
contained herein is or becomes untrue or breached in any material
respect (other than by reason of any willful misrepresentation or
breach of warranty) and such breach or misrepresentation is
promptly communicated to the other parties in writing prior to
the Effective Time, such non-breaching parties shall have the
right (jointly in the case of Sellers), at their sole option,
either to waive such misrepresentation or breach in writing or to
terminate this Agreement, but in either such event, the breaching
parties shall not be liable to the other parties for any such
damages, costs, expenses, or otherwise by reason of such breach
or misrepresentation.  If such non-breaching parties elect to
close the transactions contemplated by this Agreement
notwithstanding the written communication of such breach or
misrepresentation, they shall be deemed to have waived such
breach or misrepresentation in writing.  Similarly, if Fourth
receives an environmental assessment report on the Facilities
pursuant to Section 5.1(j) indicating the existence of any
Environmental Liability and elects to close the transactions
contemplated by this Agreement, it shall be deemed to have waived
all right to indemnification with respect thereto.


          7.2.   General Indemnification.  Subject to the
limitations on the liability of Sellers contained in Section 7.1
and this Section 7.2, Sellers shall be jointly and severally
liable for, and shall defend, save, indemnify, and hold harmless
Fourth, BANK IV, the Corporations, and their respective
successors, officers, directors, employees, and agents, and each
of them (hereinafter individually referred to as an "Indemnitee"
and collectively as "Indemnitees") against and with respect to
any losses, liabilities, claims, diminution in value, litigation,
demands, damages, costs, charges, reasonable legal fees, suits,
actions, proceedings, judgments, expenses, or any other losses
(herein collectively referred to as "Indemnifying Losses") that
may be sustained, suffered, or incurred by, or obtained against,
any Indemnitee arising from or by reason of the material uncured
breach or nonfulfillment of any of the warranties, agreements, or
representations made by the Sellers, in this Agreement; provided,
however that the liability of Sellers to defend, save, indemnify,
and hold harmless any of the Indemnitees for any liabilities,
claims, or demands indemnified  under this Section 7.2 (but not
under Section 7.5, 7.6, or 7.7) or any damages, costs, charges,
reasonable legal fees, suits, actions, proceedings, or judgments
received, incurred, filed, or entered thereon, shall be limited
to the amount by which all such liabilities, claims, and demands
so discovered or made, and all damages, costs, charges,
reasonable legal fees, suits, actions, proceedings, judgments,
expenses, and other losses recovered, incurred, filed, or entered
thereon or in connection therewith, exceed $1,000,000 in the
aggregate, net of income tax effect and such liability shall not
exceed $25,000,000.  Indemnitees shall be obligated to exhaust
all reasonably available remedies as a condition to being
indemnified hereunder but not as a condition to giving notice
pursuant to Sections 7.3 and 7.4.  It is agreed that the
indemnification obligations of Sellers hereunder shall be solely
for the benefit of the Indemnitees and may not be enforced by any
insuror under any subrogation or similar agreement or arrangement
or by any governmental agency except as a receiver for an
Indemnitee. 


          7.3.   Procedure.  If any claim or demand shall be made
or liability asserted against any Indemnitee, or if any
Litigation, suit, action, or administrative or legal proceedings
shall be instituted or commenced in which any Indemnitee is
involved or shall be named as a defendant either individually or
with others, and if such Litigation, claim, demand, liability,
suit, action, or proceeding, if successfully maintained, will
result in any Indemnifying Losses as defined in Section 7.2,
Fourth shall give Sellers written notice thereof as soon as
practicable but within 20 days (ten days in the case of legal
process) after it acquires knowledge thereof.  If the
Indemnifying Loss arises otherwise, Fourth shall give notice to
Sellers within 20 days of the discovery of the basis therefor. 
If, within 20 days after the giving of such notice, Fourth
receives written notice from Sellers stating that Sellers dispute
or intend to defend against or prosecute, as the case may be,
such claim, demand, liability, suit, action, or proceeding, then
Sellers shall have the joint right to select counsel of their
choice and to dispute or defend against, prosecute, or settle
such claim at their expense, and the Indemnitees shall fully
cooperate with Sellers in such dispute, prosecution, defense or
settlement so long as Sellers are conducting such dispute,
defense, or prosecution diligently and in good faith.  If no such
notice of intent to dispute or defend is received by Fourth
within the aforesaid 20-day period, of if such diligent and good
faith defense is not being, or ceases to be, conducted, Fourth
shall have the right, directly or through one or more of the
Indemnitees, to dispute and defend against the claim, demand, or
other liability at the cost and expense of Sellers, to settle
such claim, demand, or other liability, together with interest or
late charges thereon, and in either event to be indemnified as
provided in this Agreement so long as Fourth conducts such
defense diligently and in good faith.  If any event shall occur
that would entitle Indemnitees to a right  of indemnification
hereunder, any loss, damage, or expense subject to
indemnification shall be the after-tax net loss to the
Indemnitees (in excess of $1,000,000 but not to exceed
$25,000,000, as provided in the preceding section) after due
allowance for the income tax effect, if any, of amounts to be
received by the Indemnitees hereunder, insurance, or offsetting
income or assets resulting therefrom.


          7.4.   Survival of Representations and Warranties. 
Notwithstanding any rule of law or provision of this Agreement to
the contrary, the representations and warranties of Sellers
contained in this Agreement shall survive the Closing and the
Purchase and the closing of the transactions described in this
Agreement; provided, however, that (except for the
indemnification obligations contained in Sections 7.6 and 7.7
hereof, as to which there shall be no time limit) no claim for
indemnification or breach of warranty under this Agreement shall
be valid unless an Indemnitee shall have given written notice of
its assertion or claim to Seller:

                 (a)  within three years from the Effective Time
          in the case of a claim for breach of any representation
          or warranty contained in Section 4.1.k of this
          Agreement;

                 (b)  by the earlier of October 31, 1998 or 30
          days after the date on which the Internal Revenue
          Service completes its examination of Fourth's 1994
          federal income tax return and gives Fourth written
          notice of any proposed adjustments (provided that both
          such periods shall be extended by a period of time
          equal to 30 days plus the length of in each case any
          periods for which LSB shall have agreed to a tolling of
          any limitation period applicable to the assertion
          against LSB or any member of the Group described in
          Section 4.1.k of any deficiency by the Internal Revenue
          Service) in the case of a claim under Section 7.5 of
          this Agreement; and

                 (c)  within two years of the Effective Time in
          all other cases.


          7.5.   Special Indemnification.  

                 (a)  Separate and apart from the indemnification
          provisions in the preceding sections of this Article
          VII, and not subject to the deductibility and maximum
          liability provisions contained in Section 7.2, Sellers
          jointly and severally agree to indemnify BANK IV and
          Fourth from any reduction in the aggregate amount of
          the Bank's net operating loss carryforward for federal
          income tax purposes (to the extent an adjustment has
          not already been made pursuant to Section 2.4(b)),
          below $64,000,000; provided, however, that such
          reduction results from either (i) a reduction required
          by final action related to an audit or adjustment by
          the Internal Revenue Service and made retroactive to
          the period prior to the Effective Time or (ii) a
          reduction in the net operating loss carryforward of the
          Bank at the Effective Time attributable to the
          consolidated taxable income of LSB (after taking into
          account the taxable income or loss of each member of
          the consolidated group contained in the consolidated
          return of LSB and taking into account the allocations
          of consolidated income, gain, and loss affecting such
          net operating loss carryforward), including the effects
          of the sale of the Retained Assets and Retained
          Corporations to Sellers and all extraordinary items. 
          The payment to be made by Sellers shall be equal to the
          product of (a) the dollar amount of the reduction
          required in (i) above and/or the reduction determined
          in (ii) above, and (b) a fraction, the numerator of
          which shall be $10,500,000, and the denominator of
          which shall be $64,000,000.  However, to the extent
          that an adjustment merely postpones the related tax
          benefit to BANK IV or Fourth to a later, reasonably
          ascertainable period, then such adjustment shall not be
          subject to this special indemnification.

                 (b)  If there is an audit or similar inquiry of
          the Internal Revenue Service of any tax return which
          may have the effect of reducing the Bank's net
          operating loss as of or for a period prior to the
          Closing, all parties to this Agreement shall cooperate
          with each other as to the determination of the
          adjustments under such audit, shall make available to
          each other as may reasonably be requested all
          information, records, and documents until the
          expiration of any applicable statute of limitations or
          extensions thereof.

                 (c)  Sellers shall have the right and option,
          exercisable at any time prior to the business day next
          preceding the Effective Time, by giving written notice
          to Fourth, to elect to have the Purchase Price reduced
          by $600,000 in consideration of the termination of
          Section 7.5(a) of this Agreement, in which event the
          provisions of Section 7.5(a) shall thereupon be of no
          further force and effect.


          7.6.   Separate Indemnification for Environmental
Matters.  Separate and apart from the indemnification provided in
the preceding sections of this Article VII, and not subject to
the  $1,000,000 deductibility and $25,000,000 maximum liability
provisions contained in Section 7.2, Sellers shall be jointly and
severally liable for, and shall forever defend, save, indemnify,
and hold harmless Fourth, Bank, and BANK IV from and against, any
and all Environmental Liabilities that may be incurred or
sustained by, or rendered against Fourth, Bank, or BANK IV
arising in any manner out of the direct or indirect ownership or
operation at any time by the Bank or by any of its  current or
former Subsidiaries of any current or former Non-Bank Facility
(as hereinafter defined).  "Non-Bank Facility" means any interest
in real property, building, plant, structure, or equipment which
is not (i) currently or formerly owned or operated by the Bank in
the ordinary course of its banking business as a banking facility, (ii) the 
Equity Tower, (iii) property located at Coffee Creek Road and Kelly
Avenue, Edmond, Oklahoma, (iv) an OREO Property, or (v)
collateral held as security for loans or participations.  


          7.7.   Separate Indemnification for Barki Litigation,
COMAC, and 401(k) Plan.  Separate and apart from the
indemnification provided in the preceding sections of this
Article VII, and not subject to the $1,000,000 deductibility and
$25,000,000 maximum liability provisions contained in Section
7.2, Sellers shall be jointly severally liable for, and shall
forever defend, save, indemnify, and hold harmless Fourth, BANK
IV, and Bank from and against any and all losses, expenses
(including amounts reasonably paid in settlement), liabilities,
costs, penalties, damages, and judgments that may be incurred or
sustained by, or rendered against, Fourth, BANK IV, or Bank
arising out of or associated in any manner with (i) the United
BankCard division "frozen" 401(k) plan described in Section
4.1(m) of this Agreement, (ii) Mai-Li Barki vs. Equity Bank for
Savings, F.A. et al., Case No. CJ-91-90852, filed in the District
Court of Oklahoma County, Oklahoma or otherwise out of the claims
contained in such case, or (iii) the pending Internal Revenue
Service examination of COMAC Financial Services Ltd Partnership
described in Exhibit "K" to the Disclosure Statement; provided,
however, BANK IV shall be responsible for the payment of one-half
of the out-of-pocket attorneys' fees and costs incurred in
connection with the Barki litigation.  Sellers shall have the
right to defend the Barki action in accordance with the
provisions of Section 7.2 of this Agreement.  


          7.8.   Director and Officer Indemnification.  From and
after the Effective Time, Fourth shall indemnify, defend, and
hold harmless each person who is now, or has been at any time
prior to the date hereof or who becomes prior to the Effective
Time, an officer, director, or employee of any of the
Corporations (the "Bank Indemnified Parties") against all losses,
claims, damages, costs, expenses (including attorney's fees),
liabilities, or judgments or amounts that are paid in settlement
(which settlement shall require the prior written consent of
Fourth, which consent shall not be unreasonably withheld) of or
in connection with any claim, action, suit, proceeding, or
investigation (each a "Claim") in which a Bank Indemnified Party
is, or is threatened to be made, a party based in whole or in
part on or arising in whole or in part out of the fact that such
person is or was a director, officer, or employee of a
Corporation if such Claim pertains to any matter or fact arising,
existing, or occurring prior to the Effective Time (but excluding
the transactions expressly contemplated by this Agreement),
regardless of whether such Claim is asserted or claimed prior to,
or at or after, the Effective Time (the "Indemnified
Liabilities") to the full extent required under applicable law in
effect as of the date hereof or as amended applicable to a time
prior to the Effective Time or as required under the Bank's
charter and bylaws (and Fourth shall pay expenses in advance of
the final disposition of any such action or proceeding to each
Bank Indemnified Party to the full extent  permitted by
applicable law in effect as of the date hereof or as amended
applicable to a time prior to the Effective Time upon receipt of
any undertaking required by applicable law).  Any Bank
Indemnified Party wishing to claim indemnification under this
Section 7.8 upon learning of any Claim, shall notify Fourth (but
the failure so to notify Fourth shall not relieve Fourth from any
liability which it may have under this Section 7.8 except to the
extent such failure materially prejudices Fourth) and shall
deliver to Fourth copies of all demand letters, notices,
summonses, pleadings, and other documents which such party may
have received relating to such Claim. The obligations of Fourth
described in this Section 7.8 continue in full force and effect,
without any amendment thereto, for a period of three years from
the Effective Time; provided, however, that all rights to
indemnification in respect of any Claim asserted or made within
such period shall continue until the final disposition of such
Claim.


                               ARTICLE VIII

                               MISCELLANEOUS


          8.1.   Expenses.  Whether or not the Purchase is
effected  and whether or not this Agreement is terminated, all
costs and expenses incurred in connection with this Agreement and
the transactions contemplated hereby shall be paid by the party
incurring such expense.


          8.2.   Notices.  All notices or other communications
required or permitted hereunder shall be sufficiently given if
personally delivered or if sent by certified or registered mail,
postage prepaid, return receipt requested, addressed as follows: 
(a) If to Fourth, addressed to Ronald L. Baldwin, Executive Vice
President, Post Office Box 2360, Tulsa, Oklahoma 74101-2360; and
(b) if to the Sellers, addressed to Tony M. Shelby, Senior Vice
President, Post Office Box 754, 16 South Pennsylvania, Oklahoma
City, Oklahoma 73107, or to such other person or such other
address as shall have been furnished in writing in the manner
provided herein for giving notice.


          8.3.   Time.  Time is of the essence of this Agreement.


          8.4.   Law Governing.  This Agreement shall, except to
the extent federal law is applicable, be construed in accordance
with and governed by the laws of the State of Kansas, without
regard to the principles of conflicts of laws thereof.


          8.5.   Entire Agreement; Amendment.  This Agreement
contains and incorporates the entire agreement and understanding
of the parties hereto with respect to the subject matter hereof
and supersedes all prior negotiations, agreements, letters of
intent, and understandings.  This Agreement may only be amended
by an instrument in writing duly executed by Fourth and Sellers
and all attempted oral waivers, modifications, and amendments
shall be ineffective.


          8.6.   Successors and Assigns.  The rights and
obligations of the parties hereto shall inure to the benefit of
and shall be binding upon the successors and permitted assigns of
each of them; provided, however, that this Agreement or any of
the rights, interests, or obligations hereunder may not be
assigned by any of the parties hereto without the prior written
consent of the other parties hereto.


          8.7.   Cover, Table of Contents, and Headings.  The
cover, table of contents, and the headings of the sections and
subsections of this Agreement are for convenience of reference
only and shall not be deemed to be a part hereof or thereof or
taken into account in construing this Agreement.


          8.8.   Counterparts.  This Agreement may be executed in
one or more counterparts, each of which shall be deemed an
original but which together shall constitute but one agreement.


          8.9.   No Third Party Beneficiaries.  Except as
specifically provided herein, nothing in this Agreement shall
entitle any person other than Sellers and Fourth to any claim,
cause of action, remedy, or right of any kind.


          8.10.  Severability.  Whenever possible, each provision
of this Agreement shall be interpreted in such a manner as to be
effective and valid under applicable law, but if any provision of
this Agreement is held to be prohibited by or invalid under
applicable law, such provision will be ineffective only to the
extent of such prohibition or invalidity, without invalidating
the remainder of such provision or the remaining provisions of
this Agreement.


          IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be executed.


                           FOURTH FINANCIAL CORPORATION


                           By                                    
                             -----------------------
                             Darrell G. Knudson,
                             Chairman of the Board
          
                                     "Fourth"                     





PRIME FINANCIAL CORPORATION             LSB INDUSTRIES, INC.          


By                                      By                        
  -------------------------               -----------------------

        "Prime"                                 "LSB"


                                 "Sellers"