1
                                                                  Exhibit (d)(1)

                          AGREEMENT AND PLAN OF MERGER


                            DATED AS OF JULY 30, 2001


                                      AMONG


                      INTERNATIONAL BANCSHARES CORPORATION,


                              NBC ACQUISITION CORP.


                                       AND


                   NATIONAL BANCSHARES CORPORATION OF TEXAS





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                                TABLE OF CONTENTS



                                                                            Page
                                                                            ----
                                   Article I.

                            THE OFFER AND THE MERGER

                                                                           
1.1   The Offer.............................................................   2
1.2   Actions by the Company................................................   3
1.3   The Merger............................................................   4
1.4   Effective Time of the Merger..........................................   4
1.5   Closing...............................................................   5

                                  Article II.

                           THE SURVIVING CORPORATION

2.1   Articles of Incorporation.............................................   5
2.2   By-laws...............................................................   5
2.3   Board of Directors and Officers.......................................   5
2.4   Effects of Merger.....................................................   5

                                  Article III.

                              CONVERSION OF SHARES

3.1   Effect on Capital Stock...............................................   5
3.2   Shares of Dissenting Shareholders.....................................   6
3.3   Further Assurances....................................................   6
3.4   Exchange of Certificates..............................................   6
3.5   Withholding Taxes.....................................................   8

                                  Article IV.

                         REPRESENTATIONS AND WARRANTIES

4.1   Representations and Warranties of the Company.........................   9
4.2   Representations and Warranties of Parent..............................  23
4.3   Representations and Warranties of Sub.................................  25

                                   Article V.

                   COVENANTS RELATING TO CONDUCT OF BUSINESS

5.1   Covenants of the Company..............................................  26

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5.2   Covenants of Parent...................................................   31
5.3   Advice of Changes; Governmental Filings...............................   31
5.4   Control of the Company's Business.....................................   31

                                  Article VI.

                             ADDITIONAL AGREEMENTS

6.1   Preparation of Proxy Statement;  Company Shareholders Meeting.........   32
6.2   Access to Information and Confidentiality.............................   33
6.3   Commercially Reasonable Efforts.......................................   34
6.4   Acquisition Proposals.................................................   35
6.5   Treatment of the Company Stock Options; Other Stock Plans;
      Employee Benefits Matters.............................................   36
6.6   Directors.............................................................   38
6.7   Fees and Expenses.....................................................   38
6.8   Directors' and Officers' Indemnification and Insurance................   39
6.9   Public Announcements..................................................   41
6.10  Environmental Investigation; Right to Terminate Agreement.............   41
6.11  Investment Portfolio..................................................   43

                                  Article VII.

                              CONDITIONS PRECEDENT
7.1   Conditions to Each Party's Obligation to Effect the Merger............   43

                                 Article VIII.

                           TERMINATION AND AMENDMENT

8.1   Termination...........................................................   44
8.2   Effect of Termination.................................................   45
8.3   Amendment.............................................................   46
8.4   Extension; Waiver.....................................................   46

                                  Article IX.

                               GENERAL PROVISIONS

9.1   Non-Survival of Representations, Warranties and Agreements............   47
9.2   Notices...............................................................   47
9.3   Interpretation........................................................   48
9.4   Counterparts..........................................................   48
9.5   Entire Agreement; Third Party Beneficiaries...........................   48
9.6   Governing Law.........................................................   49
9.7   Severability..........................................................   49
9.8   Assignment............................................................   49



                                      -ii-
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9.9   Submission to Jurisdiction; Waivers...................................   49
9.10  Enforcement...........................................................   49
9.11  Definitions...........................................................   50
9.12  Other Agreements......................................................   51
9.13  Arbitration; Waiver of Trial by Jury..................................   52


                                     -iii-
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                          AGREEMENT AND PLAN OF MERGER

            AGREEMENT AND PLAN OF MERGER, dated as of July 30, 2001 (this
"Agreement"), among INTERNATIONAL BANCSHARES CORPORATION, a Texas corporation
("Parent"), NBC ACQUISITION CORP., a Texas corporation and a direct wholly owned
subsidiary of Parent ("Sub"), and NATIONAL BANCSHARES CORPORATION OF TEXAS, a
Texas corporation (the "Company").

                              W I T N E S S E T H:

            WHEREAS, the respective Boards of Directors of Parent, Sub and the
Company have approved, and the respective Boards of Directors of Parent, Sub and
the Company have declared advisable the acquisition of the Company by Parent
upon the terms and subject to the conditions set forth in this Agreement;

            WHEREAS, in furtherance of such acquisition, Parent proposes to
cause Sub to make a tender offer (as it may be amended from time to time as
permitted under this Agreement, the "Offer") to purchase all the outstanding
shares of common stock, par value $.001 per share, of the Company (the
"Shares"), at a price per Share equal to the Merger Consideration (as defined
below), without interest, upon the terms and subject to the conditions set forth
in this Agreement;

            WHEREAS, the respective Boards of Directors of Parent, Sub and the
Company deem it advisable and in the best interests of each corporation and its
respective shareholders that Sub merge with, and in to, the Company (the
"Merger"), with the Company as the surviving corporation (the "Surviving
Corporation") in the Merger, upon the terms and subject to the conditions set
forth in this Agreement, whereby each issued and outstanding Share, other than
Shares owned by Parent, Sub or the Company, and other than Dissenting Shares (as
defined below), will be converted into the right to receive the price per Share
paid pursuant to the Offer;

            WHEREAS, the respective Boards of Directors of each of Parent, Sub
and the Company have adopted resolutions approving the Offer, the Merger, this
Agreement and the transactions contemplated hereby to which each such party is a
party;

            WHEREAS, Parent, Sub and the Company desire to make certain
representations, warranties, covenants and agreements in connection with the
Offer and the Merger and also to prescribe various conditions to the Offer and
the Merger;

            WHEREAS, simultaneously with the execution and delivery of this
Agreement, certain beneficial and record shareholders of the Company owning in
the aggregate 503,867 shares of the Company's common stock are entering into
agreements (collectively, the "Shareholder Agreements") pursuant to which, among
other things, such shareholders (severally and not jointly) have agreed (i) to
tender all of such shares then owned by them to Sub pursuant to the Offer and
(ii) to vote all of such shares in favor of this Agreement and the Merger;
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            NOW, THEREFORE, in consideration of the foregoing premises and the
representations, warranties and agreements contained herein the parties hereto
agree as follows:

                                   ARTICLE I.

                            THE OFFER AND THE MERGER


         1.1 THE OFFER.

         (a) Subject to the conditions of this Agreement, as promptly as
practicable but in no event later than five Business Days after the date of the
public announcement of this Agreement, Sub shall, and Parent shall cause Sub to,
commence the Offer within the meaning of the applicable rules and regulations of
the Securities and Exchange Commission (the "SEC"). The obligations of Sub to,
and of Parent to cause Sub to, commence the Offer and accept for payment, and
pay for, any Shares tendered pursuant to the Offer are subject to the conditions
set forth in Annex A. Sub expressly reserves the right to waive any condition to
the Offer or amend or modify the terms of the Offer, except that, without the
consent of the Company, Sub shall not (i) reduce the number of Shares subject to
the Offer, (ii) reduce the price per Share to be paid pursuant to the Offer,
(iii) waive the Minimum Tender Condition, add to the conditions set forth in
Annex A or modify any condition set forth in Annex A in any manner adverse to
the holders of Shares, (iv) except as provided in the next sentence, extend the
Offer, (v) change the form of consideration payable in the Offer or (vi)
otherwise amend the Offer in any manner adverse to the holders of Shares.
Notwithstanding the foregoing, Sub may, without the consent of the Company, (A)
extend the Offer, if at the scheduled expiration date of the Offer any of the
conditions to Sub's obligation to purchase Shares are not satisfied, until such
time as such conditions are satisfied or waived, (B) extend the Offer for any
period required by any rule, regulation, interpretation or position of the SEC
or the staff thereof applicable to the Offer and (C) extend the Offer for any
reason on one or more occasions for a period of not more than five business days
beyond the latest expiration date that would otherwise be permitted under clause
(A) or (B) of this sentence. Parent and Sub agree that if all of the conditions
to the Offer are not satisfied on any scheduled expiration date of the Offer
then, provided that all such conditions are reasonably capable of being
satisfied, Sub shall extend the Offer from time to time until such conditions
are satisfied or waived, provided that Sub shall not be required to extend the
Offer beyond the Outside Date (as hereinafter defined). On the terms and subject
to the conditions of the Offer and this Agreement, Sub shall, and Parent shall
cause Sub to, pay for all Shares validly tendered and not withdrawn pursuant to
the Offer that Sub becomes obligated to purchase pursuant to the Offer as soon
as practicable after the expiration of the Offer.

         (b) On the date of commencement of the Offer, Parent and Sub shall file
with the SEC a Tender Offer Statement on Schedule TO with respect to the Offer,
which shall contain an offer to purchase and a related letter of transmittal and
summary advertisement (such Schedule TO and the documents included therein
pursuant to which the Offer will be made, together with any supplements or
amendments thereto, the "Offer Documents"). Parent and Sub agree that the Offer
Documents shall comply as to form in all material respects with the Securities
Exchange Act of 1934, as amended (the "1934 Act"), and the rules and regulations
promulgated thereunder and the Offer Documents, on the date first published,
sent or given to



                                      -2-
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the Company's shareholders, shall not contain any untrue statement of a material
fact or omit to state any 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, except that no representation or
warranty is made by Parent or Sub with respect to information supplied by the
Company or any of its shareholders specifically for inclusion or incorporation
by reference in the Offer Documents. Each of Parent, Sub and the Company shall
promptly correct any information provided by it for use in the Offer Documents
if and to the extent that such information shall have become false or misleading
in any material respect, and each of Parent and Sub shall take all steps
necessary to amend or supplement the Offer Documents and to cause the Offer
Documents as so amended or supplemented to be filed with the SEC and the Offer
Documents as so amended or supplemented to be disseminated to the Company's
shareholders, in each case as and to the extent required by applicable Federal
securities laws. The Company and its counsel shall be given reasonable
opportunity to review and comment upon the Offer Documents prior to their filing
with the SEC or dissemination to the shareholders of the Company. Parent and Sub
shall provide the Company and its counsel in writing with any comments Parent,
Sub or their counsel may receive from the SEC or its staff with respect to the
Offer Documents promptly after the receipt of such comments. On the Business Day
immediately following the Determination Date, Parent and Sub shall file an
amendment to the Schedule TO setting forth, and shall publicly announce, (i) the
Intended Take-Down Date and (ii) the definitive Merger Consideration.

         (c) "Merger Consideration" shall mean an amount equal to the difference
of (1) $24.75 minus (2) the Per Share Environmental Adjustment Amount (as
hereinafter defined).

             (i) "Determination Date" shall mean the Business Day immediately
preceding the date that is ten (10) Business Days prior to the Intended
Take-Down Date.

             (ii) "Intended Take-Down Date" shall mean the date on which Sub
intends, subject to the conditions set forth in Annex A, to first purchase any
Shares pursuant to the Offer, notice of which date Parent shall give to the
Company at least three (3) Business Days prior to the Determination Date,
provided, however, that Parent shall not give such notice until all conditions
set forth in Annex A (other than conditions that cannot be satisfied until the
date of Sub's first purchase of Shares pursuant to the Offer) have been
satisfied or waived or are reasonably expected to be satisfied within the period
prior to the Intended Take-Down Date.

         (d) Parent shall provide or cause to be provided to Sub on a timely
basis the funds necessary to purchase any Shares that Sub becomes obligated to
purchase pursuant to the Offer.

         1.2 ACTIONS BY THE COMPANY.

         (a) The Company hereby approves of and consents to the Offer, the
Merger and the other transactions contemplated by this Agreement.

         (b) On the date the Offer Documents are filed with the SEC, the Company
shall file with the SEC a Solicitation/Recommendation Statement on Schedule
14D-9 with

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respect to the Offer (such Schedule 14D-9, as amended or supplemented from time
to time, the "Schedule 14D-9") describing the recommendation of the Board of
Directors of the Company to the Company's shareholders that they accept the
Offer, tender their Shares pursuant to the Offer and approve this Agreement and
shall mail the Schedule 14D-9 to the holders of the Shares. The Schedule 14D-9
shall comply as to form in all material respects with the requirements of the
1934 Act and the rules and regulations promulgated thereunder and, on the date
filed with the SEC and on the date first published, sent or given to the
Company's shareholders, shall not contain any untrue statement of a material
fact or omit to state any 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, except that no representation or
warranty is made by the Company with respect to information supplied by Parent
or Sub specifically for inclusion in the Schedule 14D-9. Each of the Company,
Parent and Sub shall promptly correct any information provided by it for use in
the Schedule 14D-9 if and to the extent that such information shall have become
false or misleading in any material respect, and the Company shall take all
steps necessary to amend or supplement the Schedule 14D-9 and to cause the
Schedule 14D-9 as so amended or supplemented to be filed with the SEC and
disseminated to the Company's shareholders, in each case as and to the extent
required by applicable Federal securities laws. Parent and its counsel shall be
given reasonable opportunity to review and comment upon the Schedule 14D-9 prior
to its filing with the SEC or dissemination to shareholders of the Company. The
Company shall provide Parent and its counsel in writing with any comments the
Company or its counsel may receive from the SEC or its staff with respect to the
Schedule 14D-9 promptly after the receipt of such comments.

         (c) In connection with the Offer and the Merger, the Company shall
cause its transfer agent to furnish Sub promptly with mailing labels containing
the names and addresses of the record holders of Shares as of a recent date and
of those persons becoming record holders subsequent to such date, together with
copies of all lists of shareholders, security position listings and computer
files and all other information in the Company's possession or control regarding
the beneficial owners of Shares, and shall furnish to Sub such information and
assistance (including updated lists of shareholders, security position listings
and computer files) as Parent may reasonably request in communicating the Offer
to the Company's shareholders. Subject to the requirements of applicable law,
and except for such steps as are necessary to disseminate the Offer Documents
and any other documents necessary to consummate the Offer, the Merger and the
other transactions contemplated by this Agreement and the Shareholder
Agreements, Parent and Sub shall hold in confidence the information contained in
any such labels, listings and files, shall use such information only in
connection with the Offer and the Merger and, if this Agreement shall be
terminated, shall, upon request, deliver to the Company all copies of such
information then in their possession.

         1.3 THE MERGER. Upon the terms and subject to the conditions hereof, at
the Effective Time (as hereinafter defined), Sub shall be merged with and into
the Company and the separate existence of Sub shall thereupon cease, and the
Surviving Corporation shall by virtue of the Merger continue its corporate
existence under the laws of the State of Texas.

         1.4 EFFECTIVE TIME OF THE MERGER. The Merger shall become effective at
the date and time (the "Effective Time") when Articles of Merger meeting the
requirements of the Texas Business Corporation Act (the "TBCA") shall have been
duly executed and filed in

                                      -4-
   9
accordance with the TBCA, or at such other time as is specified in such Articles
of Merger in accordance with the TBCA, which Articles of Merger shall be filed
as soon as practicable following fulfillment of the conditions set forth in
Article VII hereof.

         1.5 CLOSING. The closing of the Merger (the "Closing") shall take place
at the offices of Cadwalader, Wickersham & Taft, 100 Maiden Lane, New York, New
York 10038, at 10:00 a.m. local time on the day which is no later than 3
Business Days after the day on which the last of the conditions set forth in
Article VII (other than those that can only be fulfilled at the Effective Time)
is fulfilled or waived or at such other time and place as Parent and the Company
shall agree in writing. The date on which the Closing is held is sometimes
referred to herein as the "Closing Date."

                                  ARTICLE II.

                            THE SURVIVING CORPORATION

         2.1 ARTICLES OF INCORPORATION. The Articles of Incorporation of the Sub
as in effect at the Effective Time, shall be the Articles of Incorporation of
the Surviving Corporation, until further amended in accordance with its terms
and as provided by law and this Agreement.

         2.2 BY-LAWS. The By-laws of Sub, as in effect at the Effective Time,
shall be the By-laws of the Surviving Corporation, and thereafter may be amended
in accordance with their terms and as provided by law and this Agreement.

         2.3 BOARD OF DIRECTORS AND OFFICERS. The directors of Sub immediately
prior to the Effective Time shall be the directors of the Surviving Corporation
and the officers of the Sub immediately prior to the Effective Time shall be the
officers of the Surviving Corporation, in each case until their respective
successors are duly elected and qualified.

         2.4 EFFECTS OF MERGER. The Merger shall have the effects set forth in
the TBCA.

                                  ARTICLE III.

                              CONVERSION OF SHARES

         3.1 EFFECT ON CAPITAL STOCK. As of the Effective Time, by virtue of the
Merger and without any action on the part of the holder of any capital stock:

         (a) Capital Stock of Sub. Each issued and outstanding share of the
capital stock of Sub shall be converted into and become one fully paid and
nonassessable share of common stock, par value $.001 per share, of the Surviving
Corporation.

         (b) Cancellation of Treasury Shares and Parent Owned Shares. All Shares
that are owned directly or indirectly by the Company as treasury stock or by any
wholly owned subsidiary of the Company and any Shares owned by Parent, Sub or
any other wholly owned

                                      -5-
   10
subsidiary of Parent shall be canceled, and no consideration shall be delivered
in exchange therefor.

         (c) Conversion of Shares. At the Effective Time, each issued and
outstanding Share (other than Shares to be canceled in accordance with Section
3.1(b) and the Dissenting Shares) shall be converted into the right to receive
from the Surviving Corporation in cash, without interest the Merger
Consideration, which amount is equal to the per share price paid in the Offer.

         3.2 SHARES OF DISSENTING SHAREHOLDERS. Notwithstanding anything in this
Agreement to the contrary, any issued and outstanding Shares ("Dissenting
Shares") held by a shareholder who demands appraisal of such Shares pursuant to
Section 5.12 of the TBCA (a "Dissenting Shareholder") shall not be converted as
described in Section 3.1(c) but shall become the right to receive such
consideration as may be determined to be due to such Dissenting Shareholder
pursuant to the laws of the State of Texas; provided, however, that Shares
outstanding immediately prior to the Effective Time and held by a Dissenting
Shareholder who shall, after the Effective Time, withdraw such Dissenting
Shareholder's demand for appraisal or lose such Dissenting Shareholder's right
of appraisal, in either case pursuant to the TBCA, shall be deemed to be
converted, as of the Effective Time, into the right to receive the Merger
Consideration. The Company shall give Parent (i) prompt notice of any written
demands for appraisal of Shares received by the Company and (ii) the opportunity
to direct all negotiations and proceedings with respect to any such demands. The
Company shall not, without the prior written consent of Parent, voluntarily make
any payments with respect to, or settle, offer to settle or otherwise negotiate,
any such demands.

         3.3 FURTHER ASSURANCES. If at any time after the Effective Time, the
Surviving Corporation shall consider or be advised that any deeds, bills of
sale, assignments or assurances or any other acts or things are necessary,
desirable or proper (a) to vest, perfect or confirm, of record or otherwise, in
the Surviving Corporation, its right, title or interest in, to or under any of
the rights, privileges, powers, franchises, properties or assets of either of
the constituent corporations to the Merger or (b) otherwise to carry out the
purposes of this Agreement, the Surviving Corporation and its appropriate
officers and directors or their designees shall be authorized to execute and
deliver, in the name and on behalf of either of the constituent corporations to
the Merger, all such deeds, bills of sale, assignments and assurances and do, in
the name and on behalf of such constituent corporations, all such other acts and
things necessary, desirable or proper to vest, perfect or confirm its right,
title or interest in, to or under any of the rights, privileges, powers,
franchises, properties or assets of such constituent corporation and otherwise
to carry out the purposes of this Agreement.

         3.4 EXCHANGE OF CERTIFICATES.

         (a) On or before the first date on which Shares can be purchased
pursuant to the Offer and on or before the Effective Time of the Merger, Parent
shall cause Sub to deposit with a bank or trust company selected by Parent, and
reasonably acceptable to the Company (the "Paying Agent"), for the benefit of
the holders of Shares, an amount equal to the aggregate Merger Consideration to
which the holders of Shares shall be entitled to pursuant to the Offer (to


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   11
the extent Shares shall have theretofore been validly tendered and not
withdrawn) or at the Effective Time (as appropriate) pursuant to Section 3.1(c)
(the "Exchange Fund").

         (b) As soon as practicable after the Effective Time (but in no event
later than five (5) days after the Effective Time), Parent will cause the Paying
Agent to mail to each holder of record of a certificate or certificates which
immediately prior to the Effective Time evidenced outstanding Shares which were
converted as of the Effective Time into the right to receive the Merger
Consideration ("Certificates"), (i) a notice of the effectiveness of the Merger
and (ii) a letter of transmittal (which shall specify that delivery shall be
effected, and risk of loss and title to the Certificates shall pass, only upon
delivery of the Certificates to the Paying Agent) and instructions to effect the
surrender of the Certificates in exchange for the Merger Consideration, in each
case customary for transactions such as the Merger. Upon surrender of a
Certificate for cancellation to the Paying Agent, together with such letter of
transmittal, duly executed, and such other customary documents as may be
required pursuant to such instructions, the holder of such Certificate shall be
entitled to receive in exchange therefor the Merger Consideration, less any
amounts required to be withheld pursuant to applicable tax laws, payable with
respect to the Shares formerly represented by such Certificate and the
Certificate so surrendered shall forthwith be cancelled. The Paying Agent shall
accept such Certificates upon compliance with such reasonable terms and
conditions as the Paying Agent may impose to effect an orderly exchange thereof
in accordance with normal exchange practices. After the Effective Time, there
shall be no further transfer on the records of the Company or its transfer agent
of certificates representing Shares which have been converted, in whole or in
part, pursuant to this Agreement, into the right to receive cash, and if such
certificates are presented to the Company for transfer, they shall be canceled
against delivery of such cash. If cash is to be remitted to a name other than
that in which the certificate for Shares surrendered is registered, it shall be
a condition to the payment of the Merger Consideration for the Shares
represented by such certificates that the certificate so surrendered shall be
properly endorsed, with signature guaranteed or otherwise in proper form for
transfer and that the person requesting such Merger Consideration shall pay to
the Company or its transfer agent any transfer or other taxes required by reason
of the payment of the Merger Consideration to a person or entity other than that
of the registered holder of the certificate surrendered, or establish to the
satisfaction of the Company or its transfer agent that such tax has been paid or
is not applicable. Until surrendered as contemplated by this Section 3.4(b),
each certificate for Shares shall be deemed at any time after the Effective Time
to represent only the right to receive upon such surrender the Merger
Consideration for each Share. No interest will be paid or will accrue on any
cash payable as Merger Consideration.

         (c) All cash paid upon the surrender for exchange of certificates
representing Shares in accordance with the terms of this Article III shall be
deemed to have been paid in full satisfaction of all rights pertaining to the
Shares exchanged for cash theretofore represented by such certificates.

         (d) Any cash deposited in the Exchange Fund which remains undistributed
to the holders of the certificates representing Shares 180 days after the
Effective Time shall be delivered to the Surviving Corporation at such time and
any holders of Shares who have not theretofore complied with this Article III
shall thereafter look only to the Surviving Corporation, and only as general
unsecured creditors thereof, for payment of the Merger Consideration in respect
of such Shares.

                                      -7-
   12

         (e) None of Parent, Sub, the Company or the Paying Agent shall be
liable to any person in respect of any cash from the Exchange Fund delivered to
a public office pursuant to any applicable abandoned property, escheat or
similar law. If any certificates representing Shares shall not have been
surrendered prior to two years after the Effective Time (or immediately prior to
such earlier date on which any cash in respect of such certificate would
otherwise escheat to or become the property of any Governmental Entity (as
defined below)), any such cash in respect of such certificate shall, to the
extent permitted by applicable law, become the property of the Surviving
Corporation, free and clear of all claims or interest of any person previously
entitled thereto.

         (f) The Paying Agent shall invest any cash included in the Exchange
Fund, as directed by the Parent, on a daily basis. Any interest and other income
resulting from such investments shall be paid to the Parent. To the extent that
there are losses with respect to such investments, or the Exchange Fund
diminishes for other reasons below the level required to make prompt payments of
the Merger Consideration as contemplated hereby, Parent shall promptly replace
or restore the portion of the Exchange Fund lost through investments or other
events so as to ensure that the Exchange Fund is, at all times, subject to
Section 3.4(d) hereof, maintained at a level sufficient to make such payments.
The Exchange Fund shall not be used for any other purpose except as provided in
this Agreement.

         (g) In the event that any Certificates shall have been lost, stolen or
destroyed, the Paying Agent shall deliver in exchange for such lost, stolen or
destroyed Certificates, upon the making of an affidavit of that fact by the
Person claiming such Certificate to be lost, stolen or destroyed, the Merger
Consideration payable in respect thereof pursuant to Section 3.1(c); provided,
however, that the Surviving Corporation or the Paying Agent may, in its
discretion and as a condition precedent to the payment thereof, require the
owner of such lost, stolen or destroyed Certificates to deliver a bond in such
sum as it may reasonably direct as indemnity against any claim that may be made
against the Surviving Corporation or the Paying Agent with respect to the
Certificates alleged to have been so lost, stolen or destroyed.

         (h) Parent shall pay all charges and expenses of the Paying Agent.

         3.5 WITHHOLDING TAXES. Parent and the Surviving Corporation shall be
entitled to deduct and withhold, or cause the Paying Agent to deduct and
withhold, from the consideration otherwise payable to a holder of Shares
pursuant to this Agreement any stock transfer taxes and such amounts as are
required under the Internal Revenue Code of 1986, as amended (the "Code") or any
applicable provision of state, local or foreign tax law. To the extent that
amounts are so withheld by Parent or the Surviving Corporation, such withheld
amounts shall be treated for all purposes of this Agreement as having been paid
to the holder of the Shares in respect of which such deduction and withholding
was made by Parent or the Surviving Corporation, and Parent shall provide, or
cause the Paying Agent to provide, to the holders of such Shares written notice
of the amounts so deducted or withheld.

                                      -8-
   13

                                   ARTICLE IV.

                         REPRESENTATIONS AND WARRANTIES

         4.1 REPRESENTATIONS AND WARRANTIES OF THE COMPANY. Except as set forth
in the Disclosure Schedule delivered by the Company to Parent prior to the
execution of this Agreement (the "Company Disclosure Schedule"), the Company
represents and warrants to Parent as follows:

         (a) Organization and Operation of the Company. The Company is a Texas
corporation, duly organized, validly existing and in good standing under the
laws of the state of Texas, and, except as would not reasonably be expected to
result in a Material Adverse Effect (as defined in Section 9.11(e)) on the
Company, has the full power and authority (including all licenses, franchises,
permits and other governmental authorizations which are legally required) to own
its properties and to engage in the business and activities now conducted by it.
Section 4.1(a) of the Company Disclosure Schedule sets forth a true and complete
list of all of the Company's direct and indirect subsidiaries (the "Company
Subsidiaries") and the percentage of the capital stock of each such subsidiary
owned by the Company and its subsidiaries. The Company has filed a declaration
electing to be a financial holding company with the Federal Reserve Bank of
Dallas, and the Federal Reserve Bank of Dallas has permitted such declaration to
become effective, as of March 11, 2000. Except as would not reasonably be
expected to result in a Material Adverse Effect on the Company, the Company is
operated in compliance with all regulations, limitations and requirements
applicable to companies which have elected to be financial holding companies
pursuant to applicable provisions of the Bank Holding Company Act of 1956, as
amended, including as amended by the Gramm-Leach-Bliley Act. True and complete
copies of the Articles of Incorporation and Bylaws of the Company and each of
the Company Subsidiaries, as amended to date, have been delivered to Parent. The
only business of the Company is its ownership and operation of the Company
Subsidiaries. Except as specified on Section 4.1(a) of the Company Disclosure
Schedule, neither the Company nor any of the Company Subsidiaries is a member of
any joint venture or partnership and neither the Company nor any of the Company
Subsidiaries owns any securities of any other entity (other than portfolio
securities held in the ordinary course of business) other than as herein
described.

         (b) Organization and Operation of the Company and the Company
Subsidiaries. Each of the Company Subsidiaries is a corporation, duly organized,
validly existing and in good standing under a federal banking charter or the
laws of the state set forth in Section 4.1(b) of the Company Disclosure
Schedule, and except as would not reasonably be expected to result in a Material
Adverse Effect on the Company, has full power and authority (including all
licenses, franchises, permits and other governmental authorizations which are
legally required) to own its properties and to engage in the business and
activities presently conducted by it.

         (c) Capitalization and Ownership.

             (i) The authorized capital stock of the Company consists
     exclusively of 100,000,000 shares of common stock, par value $.001 per
     share, and 20,000,000 shares of preferred stock, $.01 par value per share,
     of which as of May 6, 2001, 3,770,501

                                      -9-
   14
     Shares were outstanding and no shares of preferred stock were outstanding.
     Since May 6, 2001, the Company has not issued any Shares or any shares of
     preferred stock, other than the issuance of Shares upon the valid exercise
     of Company Stock Options (as hereinafter defined). All issued and
     outstanding Shares are duly authorized, validly issued, fully paid and
     nonassessable and free of any preemptive rights and have not been issued in
     violation of any preemptive rights of any Person (as hereinafter defined).
     No holders of Shares have any rights of rescission or other claims against
     the Company under the Securities Act of 1933, as amended (the "1933 Act"),
     resulting from any failure of such Shares to have been sold by the Company
     pursuant to a valid exemption under the 1933 Act or otherwise in compliance
     therewith.

             (ii) The authorized capital stock of each of the Company
     Subsidiaries is set forth on Section 4.1(c)(ii) of the Company Disclosure
     Schedule. All of the issued and outstanding shares of capital stock of each
     of the Company Subsidiaries are duly authorized, validly issued and
     outstanding, fully paid, nonassessable, and are owned beneficially and of
     record by the person set forth on such Schedule.

             (iii) There are no outstanding options, warrants, conversion
     rights, calls or commitments of any kind obligating the Company or any of
     the Company Subsidiaries to issue, deliver or sell or cause to be issued,
     delivered or sold, directly or indirectly, additional shares of capital
     stock or any other securities convertible into or exercisable for, or
     evidencing the right to subscribe for any capital stock of the Company, and
     no authorization therefor has been given, except that as of May 6, 2001,
     there are outstanding options to acquire an aggregate of 363,325 shares of
     common stock of the Company (the "Company Stock Options"). Section
     4.1(c)(iii) of the Company Disclosure Schedule sets forth a description of
     all outstanding Company Stock Options granted by the Company as of May 6,
     2001, including the grantee thereof, the date granted and the exercise
     price thereof. Since May 6, 2001, the Company has not granted any
     additional Company Stock Options. Neither the Company nor any Company
     Subsidiary has any outstanding commitment or obligation to repurchase,
     reacquire or redeem any of its outstanding capital stock or any Company
     Stock Options.

             (iv) There are no voting trusts or shareholder agreements to which
     the Company is a party with respect to the voting of the capital stock of
     the Company.

         (d) Financial Statements, Records, Reports and Filings. The Company has
delivered to Parent (i) the audited consolidated balance sheets of the Company
and its subsidiaries as of December 31, 2000, 1999 and 1998, and (ii) the
related audited consolidated statements of income, changes in shareholders'
equity and changes in financial position for the years then ended, together with
the notes thereto, accompanied by the report thereon of the independent
certified public accountant who examined such statements (collectively, the
"Audited Financial Statements"). Except to the extent qualified by footnotes
contained in the Audited Financial Statements and the report of the independent
accountant thereon, the Audited Financial Statements fairly present in all
material respects the financial position of the Company and the Company
Subsidiaries as of the dates thereof and the results of the Company's operations
for the periods indicated in conformity with United States generally accepted
accounting principles ("GAAP") applied on a consistent basis. In addition, the
Company has

                                      -10-
   15
delivered to Parent the unaudited consolidated balance sheet of the Company as
of March 31, 2001, and the related unaudited statements of income for the
three-month period then ended (collectively, the "Unaudited Financial
Statements"). The Unaudited Financial Statements fairly present in all material
respects the financial position of the Company as of the date thereof and the
results of their respective operations for the period indicated in conformity
with GAAP applied on a consistent basis, except as described in the footnotes to
such Unaudited Financial Statements and for year end closing adjustments that
have not been applied.

         (e) Loans. Except to the extent the failure of any of the following to
be true would not reasonably be expected to result in a Material Adverse Effect
on the Company:

             (i) Each loan reflected on the books of the Company or any Company
     Subsidiary, including, without limitation, each loan in which the Company
     and/or any Company Subsidiary holds a participation interest (collectively,
     "Loans"), is the legal, valid and binding obligation of the obligor of each
     Loan, enforceable in accordance with its terms, subject to the effect of
     bankruptcy, insolvency, reorganization, moratorium, or other similar laws
     relating to creditors' rights generally and to general equitable
     principles; provided, however, that no representation or warranty is made
     as to the collectibility of such Loans. All such Loans were made in the
     ordinary course of the Company's or applicable Company Subsidiary's
     business and have been made in accordance with reasonable and prudent
     banking practices. The Company or the applicable Company Subsidiary owns
     each such Loan free and clear of all liens, claims and encumbrances. Any
     Company Subsidiary which is a financial institution does not have in its
     portfolio any Loan exceeding its legal lending limit. Section 4.1(e)(i) of
     the Company Disclosure Schedule sets forth, as of March 31, 2001, a list of
     all of the Company's and the Company Subsidiaries' outstanding Loans that
     were classified as delinquent, substandard, doubtful, loss, nonperforming
     or problem Loans in connection with the Company's and the Company
     Subsidiaries' most recent regulatory examination or were considered to be
     so classified at March 31, 2001 under the Company Subsidiaries' policies
     and procedures.

             (ii) All loans to directors, officers and beneficial owners of 5%
     or more of the outstanding capital stock of the Company and loans to any
     affiliate thereof, as defined in Section 12b-2 of the 1934 Act, are listed
     on Section 4.1(e)(ii) of the Company Disclosure Schedule.

             (iii) Section 4.1(e)(iii) of the Company Disclosure Schedule sets
     forth a true, correct and complete list of any loan from the Company or any
     Company Subsidiary to any present officer, director, employee or any
     affiliate of any such person which was required under Regulation O of the
     Federal Reserve Board to be approved by or reported to the Company's or the
     appropriate Company Subsidiary's Board of Directors.

         (f) Absence of Certain Changes. Except (i) as expressly contemplated by
this Agreement or the transactions contemplated hereby, (ii) as discussed in
documents filed with the SEC by the Company prior to the date of this Agreement,
(iii) as set forth in Section 4.1(f) of the Company Disclosure Schedule or (iv)
to the extent the following items, individually, or in the aggregate, would not
reasonably be expected to result in a Material Adverse Effect on the

                                      -11-
   16
Company, since December 31, 2000, the Company and the Company Subsidiaries have
not (A) incurred or assumed any obligations or liabilities (absolute or
contingent), other than obligations or liabilities incurred in the ordinary
course of business and consistent with past practices and obligations or
liabilities incurred in carrying out the transactions contemplated by this
Agreement; (B) discharged or satisfied any lien or encumbrance or paid any
obligation or liability (absolute or contingent), other than in the ordinary
course of business and consistent with past practices; (C) sold, exchanged or
otherwise disposed of any of its capital assets other than in the ordinary
course of business and consistent with past practices; (D) suffered any damage,
destruction or loss, whether or not covered by insurance, materially and
adversely affecting its business, property of assets or waived any rights of
value which in the aggregate are material; (E) materially increased any bad
debt, contingency, tax or other reserves or materially changed its accounting
practices, methods or assumptions (including changes in estimates or valuation
methods); or (F) made any material change in the conduct of its business.

         (g) Environmental Matters.

             (i) Section 4.1(g)(i) of the Company Disclosure Schedule, is a
     complete and correct list of any environmental survey or report related to
     any of the Real Property, as defined below, complete copies of which have
     been made available to Parent.

             (ii) Except as expressly set forth in Section 4.1(g)(ii) of the
     Company Disclosure Schedule and except as would not reasonably be expected
     to result in a Material Adverse Effect on the Company, no Hazardous
     Materials Contamination exist on any real property owned by the Company or
     the Company Subsidiaries (including foreclosed properties owned by the
     Company or the Company Subsidiaries), or on any real property used by the
     Company or any of the Company Subsidiaries in connection with its business,
     as a result of any Hazardous Materials on or emanating from such real
     property. The real properties described in the preceding sentence are
     sometimes collectively referred to as the "Real Property." As used in this
     Agreement, the term "Hazardous Materials" shall mean (i) any "hazardous
     waste" as defined by the Resource Conservation and Recovery Act of 1976 (42
     U.S.C. Section 6901 et seq.), as amended from time to time, and regulations
     promulgated thereunder; (ii) any "hazardous substance" as defined by the
     Comprehensive Environmental Response, Compensation and Liability Act of
     1980 (42 U.S.C. Section 9601 et seq.), as amended from time to time, and
     regulations promulgated thereunder; (iii) any toxic substance regulated by
     the Toxic Substances Control Act (15 U.S.C. Section 2601 et seq.), as
     amended from time to time, and regulations promulgated thereunder; (iv)
     gasoline, diesel fuel or other petroleum hydrocarbons; (v) asbestos and
     asbestos containing materials, in any form, whether friable or non-friable;
     (vi) polychlorinated biphenyls; (vii) radon gas; (viii) any solid waste or
     petroleum waste; and (ix) any other substance which any Governmental Entity
     requires special handling in its storage, treatment, or disposal or which
     is identified or classified to be hazardous or toxic under applicable state
     or federal law or regulation or the common law. As used in this Agreement,
     the term "Hazardous Materials Contamination" shall mean the contamination
     of the improvements, facilities, soil, groundwater, air or other elements
     on or of the Real Property by Hazardous Materials in amounts that a
     Governmental Entity requires to be cleaned up.

                                      -12-
   17

         (h) Authority; No Violations.

             (i) The Company has all requisite corporate power and authority to
     enter into this Agreement and to consummate the transactions contemplated
     hereby, subject in the case of the consummation of the Merger to the
     Company Shareholder Approval (as defined in Section 4.1(k)). The execution,
     delivery and performance of this Agreement and the consummation of the
     transactions contemplated hereby have been duly authorized by all necessary
     corporate action on the part of the Company and no other corporate action
     or other corporate proceedings on the part of the Company is necessary to
     authorize this Agreement or the transactions hereby contemplated, subject
     in the case of the consummation of the Merger to the approval of this
     Agreement by the Company Shareholder Approval. This Agreement has been duly
     executed and delivered by the Company and constitutes a valid and binding
     agreement of the Company, enforceable against it in accordance with its
     terms, except as such enforceability may be limited by bankruptcy,
     insolvency, reorganization, moratorium and similar laws relating to or
     affecting creditors generally, by general equity principles (regardless of
     whether such enforceability is considered in a proceeding in equity or at
     law) or by an implied covenant of good faith and fair dealing. The Board of
     Directors of the Company has taken all necessary actions such that the
     provisions of the Texas Business Combination Law, Articles 13.01 - 13.08 of
     the TBCA, do not apply to the Merger.

             (ii) The execution, delivery and performance of this Agreement by
     the Company does not and will not, as the case may be, and the consummation
     of the Merger by the Company and the other transactions contemplated hereby
     will not, result in any violation of, or constitute a default (with or
     without notice or lapse of time, or both) under, or give rise to a right of
     termination, amendment, cancellation or acceleration of any obligation or
     the loss of a material benefit under, or the creation of a lien, pledge,
     security interest, charge or other encumbrance on any assets (any such
     conflict, violation, default, right of termination, amendment, cancellation
     or acceleration, loss or creation, a "Violation") pursuant to: (A) any
     provision of the certificate of incorporation or by-laws of the Company or
     any Company Subsidiary or (B) except as would not reasonably be expected to
     result in a Material Adverse Effect on the Company, subject to obtaining or
     making the consents, approvals, orders, authorizations, registrations,
     declarations and filings referred to in paragraph (iii) below, any loan or
     credit agreement, note, mortgage, bond, indenture, lease, benefit plan or
     other agreement, obligation, instrument, permit, concession, franchise,
     license, judgment, order, decree, statute, law, ordinance, rule or
     regulation applicable to the Company or any Company Subsidiary or their
     respective properties or assets.

             (iii) No consent, approval, order or authorization of, or
     registration, declaration or filing with, any supranational, national,
     state, municipal or local government, any instrumentality, subdivision,
     court, administrative agency or commission or other authority thereof, or
     any quasi-governmental or private body exercising any regulatory, or other
     governmental authority (a "Governmental Entity"), is required by or with
     respect to the Company or any Company Subsidiary in connection with the
     execution, delivery and performance of this Agreement by the Company or the
     consummation of the Offer or the Merger, except for those required under or
     in relation

                                      -13-
   18
      to (A) the Bank Holding Company Act of 1956, as amended (the "BHC
     Act"), (B) filings, permits, authorizations, consents and approvals as may
     be required under, and other applicable requirements of, the 1934 Act
     (including the filing with the SEC of the Schedule 14D-9 and the Proxy
     Statement (as defined in Section 6.1 hereof) relating to any required
     approval by the Company's shareholders of this Agreement) (C) the TBCA with
     respect to the filing of the Articles of Merger, (D) laws, rules,
     regulations, practices and orders of any applicable federal or state
     banking departments or of any federal or state regulatory body having
     jurisdiction over banking matters, (E) antitrust or other competition laws
     of other jurisdictions, (F) such consents and approvals specified in
     Section 4.1(h)(iii) of the Company Disclosure Schedule and (G) such
     consents, approvals, orders, authorizations, registrations, declarations
     and filings the failure of which to make or obtain would not reasonably be
     expected to result in a Material Adverse Effect on the Company. Consents,
     approvals, orders, authorizations, registrations, declarations and filings
     required under or in relation to clauses (A), (B), (C), (D) and (F) above
     are hereinafter referred to as the "Company Required Consents."

         (i) Reports. The Company has filed all reports, schedules, forms,
statements and other documents required to be filed by it with the SEC since
January 1, 1998 (collectively, including all exhibits thereto, the "Company SEC
Reports"). Except for NBC Financial, Inc., no Company Subsidiary is required to
file any form, report or other document with the SEC. None of the Company SEC
Reports, including, without limitation, any financial statements or schedules
included therein, as of their respective dates or, in the case of any
registration statements, at the time of effectiveness (and, if amended or
superseded by a filing prior to the date of this Agreement or the Closing, then
on the date of such filing), contained or will contain any untrue statement of a
material fact or omitted or will omit to state a material fact required to be
stated therein or necessary to make the statements made therein, in light of the
circumstances under which they were made, not misleading. All of such Company
SEC Reports, as of their respective dates (and as of the date of any amendment
to the respective Company SEC Report), complied as to form in all material
respects with the applicable requirements of the 1933 Act and the 1934 Act and
the rules and regulations promulgated thereunder, including, without limitation,
each of the consolidated financial statements of the Company (including any
related notes thereto) included within the Company SEC Reports comply as to form
in all material respects with applicable accounting requirements and the
published rules and regulations of the SEC with respect thereto. The Company has
heretofore furnished or made available to Parent complete and correct copies of
all material amendments and modifications that have not been filed by the
Company with the SEC to all agreements, documents and other instruments that
previously had been filed by the Company with the SEC and are currently in
effect.

         (j) Board Approval. The Board of Directors of the Company, by
resolutions duly adopted at a meeting duly called and held, and not subsequently
rescinded or modified in any way (the "Company Board Approval"), has duly (i)
determined that this Agreement, the Offer and the Merger are advisable and in
the best interests of the Company and its shareholders, (ii) approved the
execution, delivery and performance of this Agreement, the Offer and the Merger
and (iii) recommended that the shareholders of the Company accept the Offer,
tender their Shares and approve this Agreement.

                                      -14-
   19

         (k) Vote Required. The affirmative vote of the holders of two-thirds of
the outstanding Shares to adopt this Agreement and approve the Merger (the
"Company Shareholder Approval") is the only vote of the holders of any class or
series of capital stock of the Company necessary to adopt this Agreement and
approve the transactions contemplated hereby.

         (l) Brokers or Finders. No agent, broker, investment banker, financial
advisor or other firm or Person is or will be entitled to any broker's or
finder's fee or any other similar commission or fee in connection with any of
the transactions contemplated by this Agreement, except Keefe, Bruyette & Woods,
Inc., whose fees and expenses will be paid by the Company in accordance with the
Company's agreement with such firms, based upon arrangements made by or on
behalf of the Company and previously disclosed to Parent.

         (m) Opinion of the Company Financial Advisers. The Board of Directors
of the Company has received the opinion of Keefe, Bruyette & Woods, Inc., dated
the date of this Agreement, to the effect that, as of such date, the
consideration to be received in the Offer and the Merger by the holders of
Shares is fair, from a financial point of view, to such holders and such opinion
has not been withdrawn or modified in any material respect, a copy of such
opinion has been made available to Parent.

         (n) Taxes. Except (1) as disclosed in Section 4.1(n) of the Company
Disclosure Schedule or (2) to the extent that the failure of the following to be
true would not reasonably be expected to result in a Material Adverse Effect on
the Company, the Company and each of the Company Subsidiaries (i) have filed all
federal, state and local Tax Returns required to be filed by the Company or any
of the Company Subsidiaries for Tax years ended prior to the date of this
Agreement, except for those Tax Returns for which requests for extensions have
been timely filed, and all such returns are true and complete in all material
respects, (ii) have paid all Taxes shown to be due and payable on such Tax
Returns other than Taxes which (x) are currently payable without penalty or
interest or (y) are being contested in good faith and for which adequate
reserves have been established on the books and records of the Company or one or
more of the Company Subsidiaries, as the case may be, in accordance with GAAP,
(iii) have accrued all such Taxes for such periods subsequent to the periods
covered by such returns in accordance with GAAP and (iv) have not waived any
statute of limitations in respect of Taxes or agreed to any extension of time
with respect to a Tax assessment or deficiency. The Company and the Company
Subsidiaries have (i) withheld and paid all Taxes required to have been withheld
and paid in connection with amounts paid or owing to any Company or Company
Subsidiary employee, creditor, independent contractor or other third party and
(ii) collected and paid all Taxes required to have been collected and paid in
connection with any amounts received from any customer or third party, except
for any such failure to withhold, pay or collect Taxes that would not reasonably
be expected to result in a Material Adverse Effect on the Company. There are no
material liens for Taxes on the assets of the Company or any of the Company
Subsidiaries, except for liens for Taxes not yet due and payable except as set
for in Section 4.1(n) of the Company Disclosure Schedule. There is no pending,
nor has the Company or, to the best knowledge of the Company, any of the Company
Subsidiaries received written notice of any audit, examination, refund
litigation or other governmental proceeding with respect to any material Tax.
Except as disclosed in Section 4.1(n) of the Company Disclosure Schedule,
neither the Company nor any of the Company

                                      -15-
   20
Subsidiaries is a party to any agreement providing for the allocation or sharing
of Federal Income taxes. Neither the Company nor any of the Company Subsidiaries
has made any payments, or is obligated to make any payments, or is a party any
agreement which could obligate it to make any payments that will not be
deductible under Code Section 280G.

         (o) Employee Benefit Plans.

             (i) Section 4.1(o)(i) of the Company Disclosure Schedule lists each
     "employee welfare benefit plan" (as defined in Section 3(1) of the Employee
     Retirement Income Security Act of 1974, as amended ("ERISA")) maintained by
     the Company or any of the Company Subsidiaries or to which the Company or
     any of the Company Subsidiaries contribute or are required to contribute,
     including any multiemployer welfare plan (such employee welfare benefit
     plans being hereinafter collectively referred to as the "Welfare Benefit
     Plans") and sets forth (i) the amount of any liability of the Company or
     any of the Company Subsidiaries for contributions more than thirty days
     past due with respect to each Welfare Benefit Plan as of the date hereof
     and as of the end of any subsequent month ending prior to the Closing and
     (ii) the annual cost attributable to each of the Welfare Benefit Plans;
     except as set forth in Section 4.1(o)(i) of the Company Disclosure
     Schedule, no Welfare Benefit Plan provides for continuing benefits or
     coverage for any participant, beneficiary or former employee after such
     participant's or former employee's termination of employment except as may
     be required by Section 4980B of the Code and Sections 601-608 of ERISA;

             (ii) Section 4.1(o)(ii) of the Company Disclosure Schedule lists
     each "employee pension benefit plan" (as defined in Section 3(2) of ERISA
     and not exempted under Section 4(b) or 201 of ERISA) maintained by the
     Company or any of the Company Subsidiaries or to which the Company or any
     of the Company Subsidiaries contribute or are required to contribute,
     including any multiemployer plan (as defined in Section 3(37) of ERISA)
     (such employee pension benefit plans being hereinafter collectively
     referred to as the "Pension Benefit Plans");

             (iii) Except as set forth on Section 4.1(o)(iii) of the Company
     Disclosure Schedule, neither the Company nor any of the Company
     Subsidiaries maintains, has or is a party to any plan, program, agreement,
     arrangement understandings or commitment, whether written or oral, for the
     benefit of any of its employees, directors or officers relating to any of
     the following: severance pay, deferred compensation, bonuses, stock
     options, employee stock purchases, restricted stock, excess benefits,
     incentive compensation, stock bonuses, cash bonuses, golden parachutes,
     life insurance, rabbi trusts, cafeteria plans, dependent care, unfunded
     plans or any other employee-related plans, programs, agreements,
     arrangements or commitments (other than normal policies concerning
     holidays, vacations and salary continuation during short absences for
     illness or other reasons), or any program, plan, commitments, or practice
     of purchasing or otherwise compensating employees, including officers, for
     accrued vacation or sick leave upon termination of employment (collectively
     referred to as "Other Programs");

             (iv) All of the Pension Benefit Plans and Welfare Benefit Plans and
     any related trust agreements or insurance or annuity contracts (or any
     other funding

                                      -16-
   21
     instruments) and all Other Programs comply currently, and have
     complied in the past, both as to form and operation, with the provisions of
     ERISA, the Code and with all other applicable laws, rules and regulations
     governing the establishment and operation of the Pension Benefit Plans,
     Welfare Benefit Plans and all Other Programs; except as set forth on
     Section 4.1(o)(iv) of the Company Disclosure Schedule, all necessary
     governmental approvals relating to the establishment of the Pension Benefit
     Plans have been obtained; and with respect to each Pension Benefit Plan
     that is intended to be tax-qualified under Section 401(a) or 403(a) of the
     Code, a favorable determination letter as to the qualification under the
     Code of each such Pension Benefit Plan and each material amendment thereto
     has been issued by the Internal Revenue Service or has been or will be
     requested prior to the expiration of the "remedial amendment period"
     applicable to such Pension Benefit Plan (and nothing has occurred since the
     date of the last such determination letter which resulted in, or is likely
     to result in the revocation of such determination);

             (v) Except as set forth on Section 4.1(o)(v) of the Company
     Disclosure Schedule, each Welfare Benefit Plan, each Pension Benefit Plan
     and each Other Program has been administered in substantial compliance with
     the requirements of the Code, ERISA and all other applicable laws, and all
     reports and disclosures required by ERISA, the Code and any other
     applicable laws with respect to each Welfare Benefit Plan, each Pension
     Benefit Plan and each Other Program have been timely filed or delivered;

             (vi) Except as set forth on Section 4.1(o)(vi) of the Company
     Disclosure Schedule, neither the Company nor any Company Subsidiary nor any
     plan fiduciary of any Welfare Benefit Plan or Pension Benefit Plan has
     engaged in any transaction in violation of Section 406 of ERISA (for which
     transaction no exemption exists under Section 408 of ERISA) or in any
     "prohibited transaction" as defined in Section 4975(c)(1) of the Code (for
     which no exemption exists under Section 4975(c)(2) or 4975(d) of the Code)
     as a result of which the Company remains subject to liability under ERISA
     or the Code;

             (vii) Except as set forth on Section 4.1(o)(vii) of the Company
     Disclosure Schedule, neither the Company nor any Company Subsidiary nor any
     corporation or other trade or business controlled by or under common
     control with the Company (as determined under Sections 414(b) and 414(c) of
     the Code) ("Common Control Entity") is, or has been within the past three
     years, a contributing sponsor (as defined in Section 4001(a)(13) of ERISA)
     of a Pension Benefit Plan subject to the provisions of Title IV of ERISA,
     nor has the Company nor any Company Subsidiary nor a Common Control Entity
     maintained or participated in any employee pension benefit plan (as defined
     in Section 3(2) of ERISA) subject to the provisions of Title IV of ERISA.
     In addition, except as set forth on Section 4.1(o)(vii) of the Company
     Disclosure Schedule, neither the Company nor any Company Subsidiary nor a
     Common Control Entity (i) is a party to a collective bargaining agreement,
     (ii) has maintained or contributed to, or has participated in or agreed to
     participate in, a multiemployer plan (as defined in Section 3(37) of
     ERISA), or (iii) has made a complete or partial withdrawal from a
     multiemployer plan (as defined in Section 3(37) of ERISA) so as to incur
     withdrawal

                                      -17-
   22
     liability as defined in Section 4201 of ERISA (without regard to
     subsequent reduction or waiver of such liability under Section 4207 or 4208
     of ERISA);

             (viii) True and complete copies of each Welfare Benefit Plan, each
     Pension Benefit Plan and each Other Program, related trust agreements or
     insurance or annuity contracts (or any other funding instruments), summary
     plan descriptions, the most recent determination letter (if any) issued by
     the Internal Revenue Service with respect to each Pension Benefit Plan (or
     the most recent application for a determination letter filed with the
     Internal Revenue Service with respect to each Pension Benefit Plan that is
     intended to be tax-qualified and for which no determination letter has yet
     been received), the Annual Reports on Form 5500 Series (if any) filed with
     any governmental agency for each Welfare Benefit Plan, Pension Benefit Plan
     and Other Program for the three most recent plan years, the Summary Annual
     Report (if any) provided to participants with respect to each Welfare
     Benefit Plan, Pension Benefit Plan, and Other Program for the three most
     recent plan years, and any correspondence to or from the IRS, Department of
     Labor, or bank examiner with respect to any Welfare Benefit Plan, Pension
     Benefit Plan, or Other Program during the three most recent plan years,
     have been furnished to Parent;

             (ix) Except as set forth on Section 4.1(o)(ix) of the Company
     Disclosure Schedule all Welfare Benefit Plans, Pension Benefit Plans, and
     Other Programs, and related trust agreements or insurance or annuity
     contracts (or any other funding instruments), are legally valid and binding
     and in full force and effect and, there are no promised increases in
     benefits (whether expressed, implied, oral or written) under any of these
     plans, nor any expressed obligations, commitments or understandings to
     continue any of these plans (whether oral or written); the Company, its
     subsidiaries, or a Common Control Entity has the right to modify, amend, or
     terminate each Welfare Benefit Plan, Pension Benefit Plan, and Other
     Program at any time; the termination of any Welfare Benefit Plan, Pension
     Benefit Plan, or Other Program would not accelerate or increase any
     benefits payable under such plan; and in the event of termination of any
     Welfare Benefit Plan, Pension Benefit Plan, or Other Program, neither the
     Company, nor its subsidiaries, would have any liability with respect to
     such plan;

             (x) Except as set forth on Section 4.1(o)(x) of the Company
     Disclosure Schedule, there are no claims pending with respect to, or under,
     any Pension Benefit Plan, Welfare Benefit Plan or any Other Program, other
     than routine claims for plan benefits, and there are no disputes or
     litigation pending or threatened with respect to any such plans; and all
     contributions, premiums, or other payments due from the Company or any of
     the Company Subsidiaries have been fully paid or adequately provided for
     and disclosed on the books and financial statements of the Company and the
     Company Subsidiaries;

             (xi) Except as set forth on Section 4.1(o)(xi) of the Company
     Disclosure Schedule, no action has been taken, nor has there been a failure
     to take any action that would subject any person or entity to any liability
     for any income, excise or other tax or penalty in connection with any
     Pension Benefit Plan, Welfare Benefit Plan or any Other Program, other than
     for income taxes due with respect to benefits paid; and



                                      -18-
   23

             (xii) Except as otherwise set forth in Section 4.1(o)(xii) of the
     Company Disclosure Schedule, neither the execution and delivery of this
     Agreement nor the consummation of the transactions contemplated hereby will
     (i) result in any payment to be made by the Company or any of the Company
     Subsidiaries (including, without limitation, severance, unemployment
     compensation, parachute (defined in Section 280G of the Code), or
     otherwise) becoming due to any employee, director or consultant, or (ii)
     increase any benefits otherwise payable under any Welfare Benefit Plan,
     Pension Benefit Plan, or any Other Program.

         (p) Litigation. Except as disclosed in the Company SEC Reports or
Section 4.1(p) of the Company Disclosure Schedule, there are no, actions, suits,
proceedings, arbitrations, written claims or investigations pending or, to the
Company's knowledge, threatened against the Company or any of the Company
Subsidiaries, or any properties or rights of the Company or any of the Company
Subsidiaries.

         (q) No Parent Capital Stock. The Company does not own or hold directly
or indirectly any shares of common stock of Parent or any other capital stock of
Parent, or any options, warrants or other rights to acquire any shares of common
stock of Parent or any other capital stock of Parent, or in each case, any
interests therein.

         (r) Employment Matters. Except as disclosed on Section 4.1(r) of the
Company Disclosure Schedule, neither Company nor any Company Subsidiary is a
party to (i) any collective bargaining agreement, or (ii) any conciliation
agreement with the Department of Labor, the Equal Employment Opportunity
Commission or any federal, state or local agency which requires equal employment
opportunities or affirmative action in employment. There are no unfair labor
practice complaints pending against the Company or any Company Subsidiary before
the National Labor Relations Board and no similar claims pending before any
similar state, local or foreign agency. To the knowledge of the Company, there
is no activity or proceeding of any labor organization (or representative
thereof) or employee group to organize any employees of the Company or any
Company Subsidiary, nor of any strikes, slowdowns, work stoppages, lockouts, or
threats thereof, by or with respect to any such employees. Company and each
Company Subsidiary are in compliance in all material respects with all
applicable laws respecting employment and employment practices, terms and
conditions of employment and wages and hours, and neither Company or any Company
Subsidiary are engaged in any unfair labor practice.

         (s) Regulatory Matters and Examination Reports. Neither the Company nor
any of the Company Subsidiaries has any formal or informal agreements,
arrangements or understandings with the Federal Reserve Board, the Federal
Deposit Insurance Corporation, the Office of the Comptroller of the Currency,
the Texas Department of Banking, the Texas State Insurance Commissioner, the
SEC, the Texas State Securities Board or any other regulatory authority
(collectively, the "Regulatory Authorities"), nor does the Company or any the
Company Subsidiary have any examination pending by any applicable Regulatory
Authorities nor has the Company or any subsidiary been notified in writing of
any proposed examination by any Regulatory Authorities. To the extent permitted
by law, the Company has made available to Parent complete and correct copies of
(i) all examination reports by Regulatory Authorities forwarded to the Company
or any subsidiary since December 31, 1998; (ii) any correspondence between the


                                      -19-
   24
Company or any subsidiary relating to examination issues and such agencies
during such periods, and (iii) any agreements, arrangements or understandings
between the Company or any Company Subsidiary and such Regulatory Authority,
including any agreements, arrangements or understandings arising out of or
related to any such examinations. Except as set forth in Section 4.1(s) of the
Company Disclosure Schedule, the Company and the Company Subsidiaries have not
received or been made aware of any complaints or inquiries under the Community
Reinvestment Act, the Fair Housing Act, the Equal Credit Opportunity Act or any
other state or federal anti-discriminate fair lending law.

         (t) Title to Properties; Encumbrances. Except as set forth on Section
4.1(t) of the Company Disclosure Schedule, the Company and each Company
Subsidiary has unencumbered, good, legal, and indefeasible title to all their
respective properties and assets, real and personal, including, without
limitation, all the properties and assets reflected in the Audited Financial
Statements and Unaudited Financial Statements except for those properties and
assets disposed of in the ordinary course of business since December 31, 2000
and properties where the failure to have such title would not reasonably be
expected to result in a Material Adverse Effect on the Company. Except as set
forth on Section 4.1(t) of the Company Disclosure Schedule, the Company and each
of the Company Subsidiaries has a title policy in full force and effect from a
title insurance company which is solvent, insuring good and indefeasible title
(subject to the exceptions identified in such title policies) to all real
property owned respectively by the Company and/or the Company Subsidiaries in
favor of the Company and the Company Subsidiaries, whichever is applicable,
except where the failure to have such a title policy would not reasonably be
expected to result in a Material Adverse Effect on the Company. The Company has
made available to Parent all of the files and information in the possession of
the Company or the Company Subsidiaries concerning such properties, including
any title exceptions which might affect indefeasible title or value of such
property. The Company and the Company Subsidiaries each hold good and legal
title or good and valid leasehold rights to all assets that are necessary for
them to conduct their respective businesses as they are currently being
conducted, except where the failure to hold such title or such leasehold rights
would not reasonably be expected to result in a Material Adverse Effect on the
Company. Except as set forth on Section 4.1(t) of the Company Disclosure
Schedule, the Company or the Company Subsidiaries own all furniture, equipment,
art and other property used to transact business presently located on its
premises except for items of personal property owned by employees.

         (u) Patents, Trademarks and Copyrights. Except as set forth in Section
4.1(u) of the Company Disclosure Schedule, neither the Company nor any of the
Company Subsidiaries requires the use of any material patent, patent
application, invention, process, trademark (whether registered or unregistered),
trademark application, trade name, service mark, copyright, or any material
trade secret for the business or operations of the Company or any the Company
Subsidiary. The Company and/or the Company Subsidiaries own or are licensed or
otherwise have the right to use the items listed in Section 4.1(u).

         (v) Insurance. The Company and the Company Subsidiaries have in effect
the insurance coverage (including fidelity bonds) described in Section 4.1(v) of
the Company Disclosure Schedule have had similar insurance in force for the last
5 years. Except as set forth on Section 4.1(v) of the Company Disclosure
Schedule, there have been no claims under such

                                      -20-
   25
fidelity bonds within the last 5 years and to the knowledge of the Company no
facts exist which would form the basis of a claim under such bonds. To the
knowledge of the Company, there is no reason to believe that the existing
fidelity coverage would not be renewed by its carrier on substantially the same
terms unless such failure to renew is based upon any pending claim.

         (w) Leases, Contracts and Agreements. Section 4.1(w) of the Company
Disclosure Schedule sets forth an accurate and complete list of all material
leases, subleases, licenses, contracts and agreements to which the Company or
any Company Subsidiary is a party or by which the Company or any Company
Subsidiary is bound which obligate or may obligate the Company or any Company
Subsidiary for an amount in excess of $100,000 over the entire term of any such
agreement or related contracts of a similar nature which in the aggregate
obligate or may obligate the Company or any Company Subsidiary in the aggregate
for an amount in excess of $100,000 over the entire term of such related
contracts (the "Contracts"). The Company has delivered or made available to
Parent true and correct copies of all Contracts. For the purposes of this
Agreement, the Contracts shall be deemed not to include loans made by,
repurchase agreements made by, spot foreign exchange transactions of, bankers
acceptances of, agreements with Bank customers for trust services, or deposits
by the Company and the Company Subsidiary, but shall include unfunded loan
commitments and letters of credit issued by the Company or any Company
Subsidiary where the borrowers' total direct and indirect indebtedness to the
Bank is in excess of $250,000. Except as set forth in Section 4.1(w) of the
Company Disclosure Schedule, since March 31, 2001, no participations or loans
have been sold which have buy back, recourse or guaranty provisions which create
contingent or direct liabilities of the Company or any Company Subsidiary. To
the knowledge of the Company, all of the Contracts are legal, valid and binding
obligations of the parties to the Contracts enforceable in accordance with their
terms, subject to the effect of bankruptcy, insolvency, reorganization,
moratorium, or other similar laws relating to creditors' rights generally and to
general equitable principles, and are in full force and effect. To the knowledge
of the Company, except as described in Section 4.1(w) of the Company Disclosure
Schedule, all rent and other payments by the Company and any Company Subsidiary
under the Contracts are current, there are no existing defaults by Company or
any Company Subsidiary under the Contracts and no termination, condition or
other event has occurred which (whether with or without notice, lapse of time or
the happening or occurrence of any other event) would constitute a default. The
Company and any Company Subsidiary has a good and valid leasehold interest in
each parcel of real property leased by it free and clear of all mortgages,
pledges, liens, encumbrances and security interests except where the failure to
have such good and valid leasehold interest would not reasonably be expected to
result in a Material Adverse Effect on the Company. Except for deposit accounts
entered into with the Company in the ordinary course of business or as set forth
on Section 4.1(w), neither the Company nor any Company Subsidiary is a party to
or bound by any contract, agreement, commitment or understanding with any
director, officer or beneficial owner of 5% or more of the outstanding capital
stock of the Company or any affiliate, as defined in Section 12b-2 of the 1934
Act, of any of the foregoing.

         (x) No Undisclosed Liabilities. Except (a) for liabilities incurred in
the ordinary course of business and consistent with past practice, (b)
liabilities incurred in connection with the transactions contemplated by this
Agreement, (c) liabilities which would not, individually or in the aggregate,
reasonably be expected to result in a Material Adverse Effect on the Company and
(d) as disclosed in the Company SEC Reports or as set forth in

                                      -21-
   26
Section 4.1(x) of the Company Disclosure Schedule, since December 31, 2000,
neither the Company nor any of the Company Subsidiaries has incurred any
liabilities or obligations of any nature (whether accrued, absolute, contingent
or otherwise) which would be required to be reflected in or reserved against on
a consolidated balance sheet, or in the notes thereto, of the Company prepared
in accordance with generally accepting accounting principles consistent with
past practice. Neither the Company nor any of the Company Subsidiaries has
issued or otherwise has any liability or obligation with respect to any stock
appreciation rights, phantom stock or other similar rights or interests.

         (y) Knowledge. Neither the Company nor any Company Subsidiary has any
knowledge of a fact or circumstance that could impede or delay the ability to
obtain any of the Company Required Consents or the Parent Required Consents.

         (z) Company Stock Options. No agreement covering an outstanding Company
Stock Option provides that the Company and/or Parent may not take the actions
contemplated by Section 6.5(a).

         (aa) Information Supplied. Each of the Proxy Statement (as defined in
Section 6.1), the Schedule 14D-9 and any information statement to be filed by
the Company in connection with the Offer pursuant to Rule 14f-1 under the 1934
Act (the "Information Statement") will comply as to form in all material
respects with the provisions of the 1934 Act and the rules and regulations
promulgated thereunder. Each of the Schedule 14D-9 and the Information Statement
will not, at the time it is filed with the SEC or first published, sent or given
to the Company's shareholders, or at the time of any amendment or supplement
thereof, contain any untrue statement of a material fact or omit to state any
material fact required to be stated therein or necessary in order to make the
statements therein, in light of the circumstances under which they are made, not
misleading. The Proxy Statement will not, on the date the Proxy Statement is
first published, sent or given to the shareholders of the Company, at the time
of the Company Shareholders Meeting (as defined in Section 6.1 hereof) or at the
time any amendment or supplement thereof is delivered to the shareholders of the
Company contain any untrue statement of a material fact or omit to state any
material fact required to be stated therein or necessary in order to make the
statements therein, in light of the circumstances under which they are made, not
misleading. None of the information supplied or to be supplied by the Company
specifically for inclusion or incorporation by reference in the Offer Documents
will, at the time the Offer Documents are filed with the SEC or first published,
sent or given to the Company's shareholders, or at the time of any amendment or
supplement thereof, contain any untrue statement of a material fact or omit to
state any material fact required to be stated therein or necessary in order to
make the statements therein, in light of the circumstances under which they are
made, not misleading. Notwithstanding the foregoing or anything to the contrary
set forth in this Agreement, the Company makes no representation or warranty
with respect to any information supplied by Parent or Sub which is contained in
any of the foregoing documents.

         (bb) Absence of Certain Payments. Except to the extent that the failure
of the following to be true would not reasonably be expected to result in a
Material Adverse Effect on the Company, (i) neither the Company nor any of the
Company Subsidiaries, nor, to the knowledge of the Company or any of the Company
Subsidiaries, any of their respective directors, officers,

                                      -22-
   27
agents, representatives or employees (in their capacity as directors, officers,
agents, representatives or employees of the Company or any such subsidiary) has
used any corporate or other funds for unlawful contributions, payments, gifts,
or entertainment, or made any unlawful expenditures relating to political
activity to government officials candidates or members of political parties or
organizations or established or maintained any unlawful funds in violation of
Section 104 of the Foreign Corrupt Practices Act of 1977, as amended, and (ii).
neither the Company nor any of the Company Subsidiaries, nor, to the knowledge
of the Company or any of the Company Subsidiaries, any of their respective
directors, officers, agents, representatives or employees (in their capacity as
directors, officers, agents, representatives or employees of the Company or any
such subsidiary) has accepted or received any unlawful contributions, payments,
gifts, or expenditures.

            (cc) Certain Agreements. Neither the Company nor any of the Company
Subsidiaries is a party to, or bound by, any contract or agreement that
materially limits the ability of the Company or any Company Subsidiary, directly
or indirectly, to compete in any line of business or with any Person in any
geographic area during any period of time.

            (dd) Compliance with Law. Except as set forth in Section 4.1(dd) of
the Company Disclosure Schedule, neither the Company nor any of the Company
Subsidiaries is in violation of any applicable statute, rule, regulation, decree
or order of any governmental or regulatory authority applicable to the Company
or any of the Company Subsidiaries, except for violations which would not
reasonably be expected to result in a Material Adverse Effect on the Company.

         4.2 REPRESENTATIONS AND WARRANTIES OF PARENT. Parent represents and
warrants to the Company as follows:

         (a) Organization, Standing and Power. Parent is a corporation duly
incorporated or otherwise organized, validly existing and in good standing under
the laws of its jurisdiction of incorporation or organization.

         (b) Authority; No Violations.

             (i) Parent has all requisite corporate power and authority to enter
     into this Agreement and to consummate the transactions contemplated hereby.
     The execution, delivery and performance of this Agreement and the
     consummation of the transactions contemplated hereby have been duly
     authorized by all necessary corporate action on the part of Parent and no
     other corporate action or other corporate proceedings on the part of Parent
     is necessary to authorize this Agreement or the transactions hereby
     contemplated. This Agreement has been duly executed and delivered by Parent
     and constitutes a valid and binding agreement of Parent, enforceable
     against it in accordance with its terms, except as such enforceability may
     be limited by bankruptcy, insolvency, reorganization, moratorium and
     similar laws relating to or affecting creditors generally, by general
     equity principles (regardless of whether such enforceability is considered
     in a proceeding in equity or at law) or by an implied covenant of good
     faith and fair dealing.

             (ii) The execution, delivery and performance of this Agreement by
     Parent does not or will not, as the case may be, and the consummation by
     Parent of the Offer,


                                      -23-
   28


         the Merger and the other transactions contemplated hereby will not,
         result in a Violation pursuant to: (A) any provision of the certificate
         of incorporation or by-laws of Parent or any Subsidiary of Parent or
         (B) except as would not reasonably be expected to result in a Material
         Adverse Effect on Parent, subject to obtaining or making the consents,
         approvals, orders, authorizations, registrations, declarations and
         filings referred to in paragraph (iii) below, any loan or credit
         agreement, note, mortgage, bond, indenture, lease, benefit plan or
         other agreement, obligation, instrument, permit, concession, franchise,
         license, judgment, order, decree, statute, law, ordinance, rule or
         regulation applicable to Parent or any Subsidiary of Parent or their
         respective properties or assets.

                  (iii) No consent, approval, order or authorization of, or
         registration, declaration or filing with, any Governmental Entity is
         required by or with respect to Parent or any Subsidiary of Parent in
         connection with the execution, delivery and performance of this
         Agreement by Parent and Sub or the consummation of the Offer or the
         Merger, except for those required under or in relation to (A) the BHC
         Act, (B) the SEC with respect to the filing of the Offer Documents, (C)
         the TBCA with respect to the filing of the Articles of Merger, (D)
         laws, rules, regulations, practices and orders of any applicable
         federal or state banking departments or of any federal or state
         regulatory body having jurisdiction over banking matters, (E) antitrust
         or other competition laws of other jurisdictions, (F) such consents,
         approvals, orders, authorizations, registrations, declarations and
         filings the failure of which to make or obtain would not reasonably be
         expected to result in a Material Adverse Effect on Parent. Consents,
         approvals, orders, authorizations, registrations, declarations and
         filings required under or in relation to clauses (A), (B), (C) and (D)
         above are hereinafter referred to as the "Parent Required Consents."

         (c) Brokers or Finders. No agent, broker, investment banker, financial
advisor or other firm or Person is or will be entitled to any broker's or
finder's fee or any other similar commission or fee in connection with any of
the transactions contemplated by this Agreement based upon arrangements made by
or on behalf of Parent or any of its Subsidiaries, except Sandler O'Neill &
Partners, L.P. (the "Parent Financial Advisor"), whose fees and expenses will be
paid by Parent in accordance with Parent's agreement with such firm based upon
arrangements made by or on behalf of Parent and previously disclosed to the
Company.

         (d) Litigation. There are no actions, suits, proceedings, arbitrations,
written claims or investigations pending or, to Parent's knowledge, threatened
against Parent or any of its Subsidiaries, or any properties or rights of Parent
or any of its Subsidiaries, that (i) seek to question, delay or prevent the
consummation of the Offer, the Merger or the other transactions contemplated
hereby or (ii) would reasonably be expected to affect adversely the ability of
Parent to fulfill its obligations hereunder, including Parent's obligations
under Article I, Article II and Article III.

         (e) Financing. Parent has cash, cash equivalent and/or available lines
of credit sufficient to pay for all Shares validly tendered into and not validly
withdrawn from the Offer and to pay the aggregate Merger Consideration upon
effectiveness of the Merger.


                                      -24-
   29
         (f) Regulatory Matters and Examination Reports. Neither Parent nor any
subsidiary of Parent has any formal or informal agreements, arrangements or
understandings with any Regulatory Authorities that could impede or delay the
ability to obtain any of the Company Required Consents or the Parent Required
Consents or the consummation of the Offer, the Merger and transactions
contemplated hereby.

         (g) Knowledge. Neither Parent nor any Subsidiary of Parent has any
knowledge of a fact or circumstance that could impede or delay the ability to
obtain any of the Company Required Consents or the Parent Required Consents or
impede its ability to provide the Paying Agent with sufficient funds pursuant to
this Agreement.

         (h) Information Supplied. The Offer Documents will comply as to form in
all material respects with the provisions of the 1934 Act and the rules and
regulations promulgated thereunder. Each of the Offer Documents will not, at the
time it is filed with the SEC or first published, sent or given to the Company's
shareholders, or at the time of any amendment or supplement thereof, contain any
untrue statement of a material fact or omit to state any material fact required
to be stated therein or necessary in order to make the statements therein, in
light of the circumstances under which they are made, not misleading.
Notwithstanding the foregoing or anything to the contrary set forth in this
Agreement, Parent makes no representation or warranty with respect to any
information supplied by the Company which is contained in any of the foregoing
documents. None of the information supplied or to be supplied by Parent or Sub
specifically for inclusion or incorporation by reference in the Schedule 14D-9
or any Information Statement will, at the time it is filed with the SEC or first
published, sent or given to the Company's shareholders, or at the time of any
amendment or supplement thereof, contain any untrue statement of a material fact
or omit to state any material fact required to be stated therein or necessary in
order to make the statements therein, in light of the circumstances under which
they are made, not misleading. None of the information supplied or to be
supplied by Parent or Sub specifically for inclusion or incorporation by
reference in the Proxy Statement (as defined in Section 6.1 hereof) will, on the
date the Proxy Statement is filed with the SEC or first published, sent or given
to the shareholders of the Company, at the time of the Company Shareholders
Meeting or at the time of any amendment or supplement thereto contain any untrue
statement of a material fact or omit to state any material fact required to be
stated therein or necessary in order to make the statements therein, in light of
the circumstances under which they are made, not misleading.

         4.3 REPRESENTATIONS AND WARRANTIES OF SUB. Sub represents and warrants
to the Company as follows:

         (a) Organization, Standing and Power. Sub is a corporation duly
incorporated, validly existing and in good standing under the laws of Texas. Sub
is a direct wholly-owned subsidiary of Parent.

         (b) Authority; No Violations.


            (i) Sub has all requisite corporate power and authority to enter
      into this Agreement and to consummate the transactions contemplated
      hereby. The execution, delivery and performance by Sub of this Agreement
      and the consummation by Sub of the transactions contemplated hereby have
      been duly authorized by all necessary corporate


                                      -25-
   30
      and shareholder action on the part of Sub and no other corporate action or
      other corporate proceedings on the part of Sub is necessary to authorize
      this Agreement or the transactions hereby contemplated. This Agreement has
      been duly executed and delivered by Sub and constitutes a valid and
      binding agreement of Sub, enforceable against it in accordance with its
      terms, except as such enforceability may be limited by bankruptcy,
      insolvency, reorganization, moratorium and other similar laws relating to
      or affecting creditors generally, by general equity principles (regardless
      or whether such enforceability is considered in a proceeding in equity or
      at law) or by an implied covenant of good faith and fair dealing.

            (ii) The execution, delivery and performance of this Agreement by
      Sub does not or will not, as the case may be, and the consummation by Sub
      of the and the other transactions contemplated hereby will not, result in
      a Violation pursuant to: (A) any provision of the certificate of
      incorporation or by-laws of Sub or (B) except as would not reasonably be
      expected to result in a Material Adverse Effect on Parent, subject to
      obtaining or making the consents, approvals, orders, authorizations,
      registrations, declarations and filings referred to in paragraph (iii)
      below, any loan or credit agreement, note, mortgage, bond, indenture,
      lease, benefit plan or other agreement, obligation, instrument, permit,
      concession, franchise, license, judgment, order, decree, statute, law,
      ordinance, rule or regulation applicable to Sub or its properties or
      assets.

         (c) No Business Activities. Sub has not conducted any activities other
than in connection with the organization of Sub, the negotiation and execution
of this Agreement and the consummation of the transactions contemplated hereby.
Sub has no Subsidiaries.

                                   ARTICLE V.

                    COVENANTS RELATING TO CONDUCT OF BUSINESS

         5.1 COVENANTS OF THE COMPANY. During the period from the date of this
Agreement and continuing until the earliest of (i) such time as nominees of
Parent shall comprise a majority of the members of the Company's Board of
Directors, (ii) the termination of this Agreement in accordance with Article
VIII or (iii) the Effective Time, the Company agrees as to itself and the
Company Subsidiaries that (except as expressly contemplated or permitted by this
Agreement or as otherwise indicated on the Company Disclosure Schedule or as
required by a Governmental Entity of competent jurisdiction or to the extent
that Parent shall otherwise consent in writing):

         (a) Ordinary Course. The Company and the Company Subsidiaries shall
carry on their respective businesses in the usual, regular and ordinary course
in all material respects, in substantially the same manner as heretofore
conducted, and shall use all commercially reasonable efforts to preserve intact
their present lines of business, maintain their rights and franchises and
preserve their relationships with customers, suppliers and others having
business dealings with them to the end that their ongoing businesses shall not
be impaired in any material respect at the Effective Time; provided, however,
that no action by the Company or its Subsidiaries with respect to matters
specifically addressed by any other


                                      -26-
   31
provision of this Section 5.1 shall be deemed a breach of this Section 5.1(a)
unless such action would constitute a breach of one or more of such other
provisions. In furtherance of the foregoing, the Company shall, and shall cause
each of the Company Subsidiaries to:

            (i) extend credit in accordance with existing lending policies,
      except that it shall not, without the prior written consent of Parent,
      which consent shall not be unreasonably withheld, make any new loan or
      modify, restructure or renew any existing loan (except pursuant to
      commitments made prior to the date of this Agreement) to any borrower if
      the amount of the resulting loan, when aggregated with all other loans or
      extensions of credit to such Person, would be in the excess of $250,000;

            (ii) maintain in a manner consistent with past practices all of the
      Company's and the Company Subsidiaries' properties in good repair, order
      and condition, reasonable wear and tear excepted, and maintain the
      insurance coverages described in Section 4.1(v) or obtain comparable
      insurance coverages from reputable insurers which, in respect to amounts,
      types and risks insured, are adequate for the business conducted by the
      Company and the Company Subsidiaries and consistent with the existing
      insurance coverages;

            (iii) timely file with all appropriate federal regulatory
      authorities all financial statements and other material reports, and with
      all other regulatory authorities file all material financial statements
      and other material reports, required to be so filed by the Company and/or
      the Company Subsidiaries and to the extent permitted by applicable law,
      promptly thereafter deliver to Parent copies of all such financial
      statements and other material reports required to be so filed;

            (iv) comply in all respects with all applicable laws and
      regulations, domestic and foreign, except where the failure to so comply
      would not reasonably be expected to result in a Material Adverse Effect on
      the Company;

            (v) promptly give written notice to Parent upon obtaining knowledge
      of any event or fact that would cause any of the representations or
      warranties of the Company contained in or referred to in this Agreement to
      be untrue or misleading in any material respect;

            (vi) deliver to Parent a list, dated as of the Closing Date, showing
      (i) the name of each bank or institution where the Company and/or the
      Company Subsidiaries have accounts or safe deposit boxes, (ii) the name(s)
      in which such accounts or boxes are held and (iii) the name of each person
      authorized to draw thereon or have access thereto;

            (vii) promptly notify Parent of the knowledge on the part of the
      Company of any material change or inaccuracies in any data previously
      given or made available to Parent or Sub pursuant to this Agreement; and

            (viii) provide access, to the extent that the Company or the Company
      Subsidiaries have the right to provide access, to any or all of their
      properties and facilities so as to enable Parent to physically inspect any
      structure or components of any structure


                                      -27-
   32
      on such property; provided, however, that the Company shall not be
      required to permit Phase II sampling, subject however to Section 6.10
      hereof.

         (b) Dividends; Changes in Share Capital. The Company shall not, and
shall not permit any of the Company Subsidiaries to, and shall not propose to,
(i) declare or pay any dividends on or make other distributions in respect of
any of its capital stock, except dividends by wholly owned Subsidiaries of the
Company to the Company, (ii) split, combine or reclassify any of its capital
stock or issue or authorize or propose the issuance of any other securities in
respect of, in lieu of or in substitution for, shares of its capital stock,
except for any such transaction by a wholly owned Subsidiary of the Company
which remains a wholly owned Subsidiary of the Company after consummation of
such transaction or (iii) repurchase, redeem or otherwise acquire any shares of
its capital stock or any securities convertible into or exercisable for any
shares of its capital stock except for the purchase from time to time by the
Company of Shares in the ordinary course of business consistent with past
practice in connection with the Company Benefit Plans.

         (c) Issuance of Securities. The Company shall not, and shall not permit
any of the Company Subsidiaries to, issue, grant, deliver or sell, or authorize
or propose the issuance, grant, delivery or sale of, any shares of its capital
stock of any class, or any securities convertible into or exercisable for, or
any rights, warrants or options to acquire any such shares or enter into any
agreement with respect to any of the foregoing, or any stock appreciation rights
or any phantom stock other than (i) the issuance of Shares upon the exercise of
stock options granted prior to the date of this Agreement, (ii) issuances by a
wholly owned Subsidiary of the Company of capital stock to such Subsidiary's
parent or another wholly owned Subsidiary of the Company, (iii) issuances of
shares, options, rights or other awards and amendments to equity-related awards
in numbers not greater than those set forth in Section 5.1(c) of the Company
Disclosure Schedule and (iv) issuances in connection with actions permitted by
Section 5.1(e).

         (d) Governing Documents. Except to the extent required to comply with
their respective obligations hereunder, required by law or required by the rules
and regulations of the American Stock Exchange, the Company and the Company
Subsidiaries shall not amend, in the case of the Company Subsidiaries, in any
material respect, or propose to so amend their respective certificates of
incorporation, by-laws or other governing documents.

         (e) No Acquisitions. The Company shall not, and shall not permit any of
the Company Subsidiaries to, acquire or agree to acquire by merging or
consolidating with, or by purchasing a substantial equity interest in or a
substantial portion of the assets of, or by any other manner, any business or
any corporation, partnership, association or other business organization or
division thereof or otherwise acquire or agree to acquire any assets (other than
the acquisition of assets used in the operations of the business of the Company
and its Subsidiaries in the ordinary course); provided, however, that the
foregoing shall not prohibit (x) internal reorganizations or consolidations
involving existing Subsidiaries of the Company or (y) the creation of new
Subsidiaries of the Company organized to conduct or continue activities
otherwise permitted by this Agreement.


                                      -28-
   33
         (f) No Dispositions. Other than (i) internal reorganizations or
consolidations involving existing Subsidiaries of the Company, (ii) dispositions
referred to in the Company SEC Reports filed prior to the date of this
Agreement, (iii) as may be required by or in conformance with law or regulation
in order to permit or facilitate the consummation of the transactions
contemplated hereby, or (iv) in the ordinary course of business, the Company
shall not, and shall not permit any Subsidiary of the Company to, sell, lease,
encumber or otherwise dispose of, or agree to sell, lease, encumber or otherwise
dispose of, any of its assets (including capital stock of Subsidiaries of the
Company) which are material to the Company.

         (g) Investments; Indebtedness. The Company shall not, and shall not
permit any of its Subsidiaries to, other than deposit liabilities owed to
deposit customers in the ordinary course of business, including with respect to
Certificates of Deposit and trade accounts payable incurred in the ordinary
course of business and other than in connection with actions permitted by
Section 5.1(e), create, incur, assume or suffer to exist any indebtedness,
issuances of debt securities, guarantees, loans or advances not in existence as
of the date of this Agreement except pursuant to the credit facilities,
indentures and other arrangements in existence on the date of this Agreement and
in the ordinary course of business, and any other indebtedness existing on the
date of this Agreement, in each case as such credit facilities, indentures,
other arrangements and other existing indebtedness may be amended, extended,
modified, refunded, renewed, refinanced or replaced after the date of this
Agreement, but only if the aggregate principal amount thereof is not increased
thereby, the term thereof is not extended thereby and the other terms and
conditions thereof, taken as a whole, are not less advantageous to the Company
and its Subsidiaries than those in existence as of the date of this Agreement.

         (h) Compensation. Other than (i) as set forth in Section 5.1(h) of the
Company Disclosure Schedule, (ii) as contemplated by Section 6.5, or (iii) as
required to comply with law, the Company shall not, and shall not permit any of
the Company Subsidiaries to, except in the ordinary course of business
consistent with past practice or as required by an existing agreement or plan,
increase the amount of compensation of, or pay or agree to pay or accrue any
bonus or like benefit to or for the credit of, any director, officer or
employee, make any increase in or commitment to increase any employee benefits
or change or modify the period of vesting or retirement age for any participant
in any employee benefit plan, enter into any employment, consulting or severance
agreement or other agreement with any director, officer or employee, issue any
Company Stock Options or any stock appreciation rights or phantom stock, adopt,
amend, terminate or make any commitment to adopt any additional employee benefit
plan or make any contribution, other than regularly scheduled contributions, to
any Benefit Plan.

         (i) Other Actions. The Company shall not, and shall not permit any of
its Subsidiaries to, take any action that would, or fail to take any
commercially reasonable action which failure would, or that could reasonably be
expected to, result in, except as otherwise permitted by Section 6.4, any of the
conditions to the Offer (set forth in Annex A) or the Merger (set forth in
Article VII) not being satisfied.

         (j) Further Negative Covenants. Except with the prior written consent
of Parent or as otherwise specifically permitted by this Agreement, the Company
shall not and shall cause the Company Subsidiaries not to, from the date of this
Agreement to the Closing:


                                      -29-
   34
            (i) make any material change in the methods used in allocating and
      charging costs, except as may be required by applicable law, regulation or
      GAAP and after notice to Parent;

            (ii) cancel any debts, waive any claims or rights of value or sell,
      transfer, or otherwise dispose of any of its material properties or assets
      in excess of $10,000, except as permitted by Section 6.11 or in the
      ordinary course of business and consistent with prudent banking practices;

            (iii) dispose of or permit to lapse any rights to the use of any
      material trademark, service mark, trade name or copyright, or dispose of
      or disclose to any person other than its employees any material trade
      secret not theretofore a matter of public knowledge;

            (iv) except through settlement of indebtedness, foreclosure,
      acquisition in lieu of foreclosure, the exercise of creditors' remedies or
      in a fiduciary capacity, acquire the capital stock or other equity
      securities or interest of any Person;

            (v) make any capital expenditure or a series of capital expenditures
      of a similar nature in excess of $25,000 in the aggregate;

            (vi) make any material income tax or franchise tax election or
      settle or compromise any federal, state, local or foreign income tax or
      franchise tax liability;

            (vii) except for negotiations and discussions between the parties
      hereto relating to the transactions contemplated by this Agreement or as
      otherwise permitted hereunder, enter into any transaction, or enter into,
      modify or amend any contract or commitment by which any such transaction,
      contract, or commitment would obligate the Company in an amount which
      would exceed $50,000 alone or in the aggregate other than banking
      transactions entered into in the ordinary course of business and
      consistent with prudent banking practices;

            (viii) issue any certificates of deposit except in the ordinary
      course of business and in accordance with prudent banking practices;

            (ix) make any investments except in the ordinary course of business
      and in accordance with prudent banking practices;

            (x) change any fiscal year or the length thereof;

            (xi) alter the size or composition of the Company Subsidiaries'
      deposit base, securities portfolio, loan portfolio or asset mix, except as
      permitted by Section 6.11 or in the ordinary course of business;

provided, however, that notwithstanding anything to the contrary in this
Agreement, the Company shall be permitted to dispose of all or a portion of the
securities comprising the Investment Portfolio in accordance with Section 6.11.


                                      -30-
   35
         5.2 COVENANTS OF PARENT. During the period from the date of this
Agreement and continuing until the Effective Time, Parent agrees as to itself
and its Subsidiaries that (except as expressly contemplated or permitted by this
Agreement or as otherwise indicated on the Parent Disclosure Schedule or as
required by a Governmental Entity of competent jurisdiction or to the extent
that the Company shall otherwise consent in writing):

         (a) Financing. Parent shall not, and shall not permit any of its
Subsidiaries to, take any action that would, or fail to take any action which
failure would, impair Parent's source of funds to pay for all Shares validly
tendered and not validly withdrawn from the Offer and pay the aggregate Merger
Consideration pursuant to this Agreement and otherwise to satisfy its
obligations hereunder.

         (b) Regulatory Approvals. Parent shall not, and shall not permit any of
its Subsidiaries to, take any action that would, or fail to take any
commercially reasonable action which failure would, reasonably be expected to
impede or delay any Company Required Consent or Parent Required Consent or
otherwise impede or delay the consummation of the Offer, the Merger and the
other transactions contemplated by this Agreement.

         5.3 ADVICE OF CHANGES; GOVERNMENTAL FILINGS. Each party shall (a)
confer on a regular and frequent basis with the other and (b) report (to the
extent permitted by law or regulation or any applicable confidentiality
agreement) on operational matters. The Company shall file all reports required
to be filed by it with the SEC (and all other Governmental Entities) between the
date of this Agreement and the Effective Time and shall (to the extent permitted
by law or regulation or any applicable confidentiality agreement) deliver to
Parent copies of all such reports, announcements and publications promptly after
the same are filed. Subject to applicable laws relating to the exchange of
information, each of the Company and Parent shall have the right to review in
advance, and will consult with the other with respect to, all the information
relating to the other party and each of their respective Subsidiaries, which
appears in any filings, announcements or publications made with, or written
materials submitted to, any third party or any Governmental Entity in connection
with the transactions contemplated by this Agreement. In exercising the
foregoing right, each of the parties hereto agrees to act reasonably and as
promptly as practicable. Each party agrees that, to the extent practicable and
as timely as practicable, it will consult with, and provide all appropriate and
necessary assistance to, the other party with respect to the obtaining of all
permits, consents, approvals and authorizations of all third parties and
Governmental Entities necessary or advisable to consummate the transactions
contemplated by this Agreement and each party will keep the other party apprised
of the status of matters relating to completion of the transactions contemplated
hereby.

         5.4 CONTROL OF THE COMPANY'S BUSINESS. Nothing contained in this
Agreement shall be deemed to give Parent, directly or indirectly, the right to
control or direct the Company's operations prior to the Effective Time. Prior to
the Effective Time, the Company shall exercise, consistent with the terms and
conditions of this Agreement, complete control and supervision over its
operations.


                                      -31-
   36
                                  ARTICLE VI.

                              ADDITIONAL AGREEMENTS

         6.1 PREPARATION OF PROXY STATEMENT; COMPANY SHAREHOLDERS MEETING.

         (a) If the Company Shareholder Approval is required by law, the Company
will, at Parent's request, as soon as practicable following the acceptance for
payment of, and payment for, any Shares by Sub pursuant to the Offer and the
expiration of the Offer, prepare and file with the SEC preliminary proxy
materials or an information statement, as appropriate, relating to the Company
Shareholders Meeting (as defined in Section 6.1(b)) (such proxy or information
statement, and any amendments or supplements thereto, the "Proxy Statement").
The Proxy Statement shall comply as to form in all material respects with the
applicable provisions of the 1934 Act and the rules and regulations thereunder.
Each of the Company and Parent shall use all commercially reasonable efforts to
have the Proxy Statement cleared by the SEC as promptly as practicable after
filing with the SEC. The Company shall, as promptly as practicable after receipt
thereof, provide copies of any written comments received from the SEC with
respect to the Proxy Statement to Parent and advise Parent of any oral comments
with respect to the Proxy Statement received from the SEC.

         Parent agrees that none of the information supplied or to be supplied
by Parent for inclusion or incorporation by reference in the Proxy Statement and
each amendment or supplement thereto, at the time of mailing thereof and at the
time of the Company Shareholders Meeting, will contain an untrue statement of a
material fact or omit to state a material fact required to be stated therein or
necessary to make the statements therein, in light of the circumstances under
which they were made, not misleading. The Company agrees that none of the
information supplied or to be supplied by the Company for inclusion or
incorporation by reference in the Proxy Statement and each amendment or
supplement thereto, at the time of mailing thereof and at the time of the
Company Shareholders Meeting, will contain an untrue statement of a material
fact or omit to state a material fact required to be stated therein or necessary
to make the statements therein, in light of the circumstances under which they
were made, not misleading. For purposes of the foregoing, it is understood and
agreed that information concerning or related to Parent will be deemed to have
been supplied by Parent and information concerning or related to the Company and
the Company Shareholders Meeting shall be deemed to have been supplied by the
Company. The Company will provide Parent with a reasonable opportunity to review
and comment on any amendment or supplement to the Proxy Statement prior to
filing such with the SEC, and will provide Parent with a copy of all such
filings made with the SEC. No amendment or supplement to the information
supplied by Parent for inclusion in the Proxy Statement shall be made without
the approval of Parent, which approval shall not be unreasonably withheld or
delayed.

         (b) Subject to Section 6.4, and Article VIII, if the Company
Shareholder Approval is required by law, the Company will, at Parent's request,
as soon as practicable following the acceptance for payment of, and payment for,
any Shares by Sub pursuant to the Offer and the expiration of the Offer, duly
call, give notice of, convene and hold a meeting of its shareholders (the
"Company Shareholders Meeting") for the purpose of obtaining the Company
Shareholder Approval with respect to the transactions contemplated by this
Agreement, shall


                                      -32-
   37
take all lawful action to solicit the Company Shareholder Approval and the Board
of Directors of the Company shall recommend approval of this Agreement by the
shareholders of the Company. Without limiting the generality of the foregoing
but subject to its rights pursuant to Sections 6.4, and 8.1(f), the Company
agrees that its obligations pursuant to the first sentence of this Section
6.1(b) shall not be affected by the commencement, public proposal, public
disclosure or communication to the Company of any Acquisition Proposal (as
defined in Section 6.4). Notwithstanding the foregoing, if Sub or any other
subsidiary of Parent shall acquire at least 90% of the outstanding Shares, the
parties shall, at the request of Parent, take all necessary and appropriate
action to cause the Merger to become effective as soon as practicable after the
expiration of the Offer without a Company Shareholders Meeting in accordance
with Section 5.16 of the TBCA.

         (c) Parent agrees to cause all Shares purchased pursuant to the Offer
and all other Shares owned by Parent or any subsidiary of Parent to be voted in
favor of the Merger.

         6.2 ACCESS TO INFORMATION AND CONFIDENTIALITY.

         (a) During the period prior to such time as Parent's designees shall
constitute a majority of the members of the Board of Directors of the Company,
upon reasonable notice, the Company shall (and shall cause the Company
Subsidiaries to) afford to the officers, employees, accountants, counsel,
financial advisors and other representatives of Parent reasonable access during
normal business hours to all its properties, books, contacts, commitments and
records and, during such period, the Company shall (and shall cause the Company
Subsidiaries to) furnish promptly to Parent (a) a copy of each report, schedule,
registration statement and other document filed, published, announced or
received by it during such period pursuant to the requirements of Federal or
state securities laws, as applicable (other than documents which such party is
not permitted to disclose under applicable law), and (b) consistent with its
legal obligations, all other information concerning its business, properties and
personnel as Parent may reasonably request; provided, however, that the Company
may restrict the foregoing access to the extent that (i) a Governmental Entity
requires the Company or any of the Company Subsidiaries to restrict access to
any properties or information reasonably related to any such contract on the
basis of applicable laws and regulations with respect to national security
matters or (ii) any law, treaty, rule or regulation of any Governmental Entity
applicable to the Company requires the Company or the Company Subsidiaries to
restrict access to any properties or information. Any investigation by Parent
shall not affect the representations and warranties of the Company and provided,
further, that any information or access requested by Parent pursuant to this
Section shall be in connection with the transactions contemplated by this
Agreement.

         (b) Parent shall, and shall cause its affiliates (as defined in Rule
12b-2 of the Exchange Act) and its and their employees, agents, accountants,
legal counsel and other representatives and advisers to, hold in strict
confidence all, and not divulge or disclose any information of any kind
concerning the Company and its business; provided, however, that the foregoing
obligation of confidence shall not apply to (i) information that is or becomes
generally available to the public other than as a result of a disclosure by
Parent, any of its affiliates or any of its employees, agents, accountants,
legal counsel or other representatives or advisers, (ii) information that is or
becomes available to Parent, any of its affiliates or any of its


                                      -33-
   38
employees, agents, accountants, legal counsel or other representatives or
advisers on a nonconfidential basis, and (iii) information that is required to
be disclosed by Parent, any of its affiliates or any of its employees, agents,
accountants, legal counsel or other representatives or advisers as a result of
any applicable law, rule or regulation of any Governmental Entity; and provided
further, however, that Parent shall promptly notify the Company of any
disclosure pursuant to clause (iii) of this Section 6.2(b). Promptly after any
termination of this Agreement, Parent and its representatives shall return to
the Company or destroy all copies of documentation with respect to the Company
that were supplied by or on behalf of the Company pursuant to this Agreement,
without retaining any copy thereof, and destroy any notes or analyses Parent
and/or its representatives may have prepared containing information derived from
such materials

         6.3 COMMERCIALLY REASONABLE EFFORTS.

         (a) Subject to the terms and conditions of this Agreements each party
will use all commercially reasonable efforts to take, or cause to be taken, all
actions and to do, or cause to be done, all things necessary, proper or
advisable under applicable laws and regulations to consummate and make
effective, in the most expeditious manner practicable, the Offer, the Merger and
the other transactions contemplated by this Agreement as soon as practicable
after the date hereof, including, without limitation, obtaining the Company
Required Consents and the Parent Required Consents in a timely manner. In
furtherance and not in limitation of the foregoing, each party hereto agrees to
make any appropriate filings pursuant to the BHC Act with respect to the
transactions contemplated hereby as promptly as practicable after the date
hereof and to supply as promptly as practicable any additional information and
documentary material that may be requested pursuant to the BHC Act and to take
all other actions reasonably necessary to cause the approval of the transactions
contemplated hereby under the BHC Act and the expiration or termination of the
applicable waiting periods under the BHC Act as soon as practicable. Nothing in
this Section 6.3(a) shall require any of Parent and its Subsidiaries to sell or
otherwise dispose of, or permit the sale or other disposition of, any assets of
Parent, the Company or their respective Subsidiaries, whether as a condition to
obtaining any approval from a Governmental Entity or any other Person or for any
other reason.

         (b) Each of Parent and the Company shall, in connection with the
efforts referenced in Section 6.3(a) to obtain all requisite approvals and
authorizations for the transactions contemplated by this Merger Agreement under
the BHC Act or any other applicable law or regulation, use all commercially
reasonable efforts to (i) make all appropriate filings and submissions with any
Governmental Entity that may be necessary, proper or advisable under applicable
laws or regulations in respect of any of the transactions contemplated by this
Agreement, (ii) cooperate in all respects with each other in connection with any
such filing or submission and in connection with any investigation or other
inquiry, including any proceeding initiated by a private party, (iii) promptly
inform the other party of any communication received by such party from, or
given by such party to the Federal Reserve Board or any other Governmental
Entity and of any material communication received or given in connection with
any proceeding by a private party, in each case regarding any of the
transactions contemplated hereby and (iv) permit the other party to review any
communication given by it to, and consult with each other in advance of any
meeting or conference with, the Federal Reserve Board or any such other
Governmental Entity or, in connection with any


                                      -34-
   39
proceeding by a private party, with any other Person, and to the extent
permitted by the Federal Reserve Board or such other applicable Governmental
Entity or other Person, give the other party the opportunity to attend and
participate in such meetings and conferences.

         (c) In furtherance and not in limitation of the covenants of the
parties contained in Sections 6.3(a) and 6.3(b), if any administrative or
judicial action or proceeding, including any proceeding by a private party, is
instituted (or threatened to be instituted) challenging any transaction
contemplated by this Agreement as violative of any applicable law or regulation,
each of Parent and the Company shall cooperate in all respects with each other
and use all commercially reasonable efforts to contest and resist any such
action or proceeding and to have vacated, lifted, reversed or overturned any
decree, judgment, injunction or other order, whether temporary, preliminary or
permanent that is in effect and that prohibits, prevents or restricts
consummation of the transactions contemplated by this Agreement. Notwithstanding
the foregoing or any other provision of this Agreement, nothing in this Section
6.3 shall limit a party's right to terminate this Agreement pursuant to Section
8.1(b) or 8.1(c) so long as such party has up to then complied in all respects
with its obligations under this Section 6.3.

         (d) If any objections are asserted with respect to the transactions
contemplated hereby under any applicable law or regulation or if any suit is
instituted by any Governmental Entity or any private party challenging any of
the transactions contemplated hereby as violative of any applicable law or
regulation, each of Parent and the Company shall use all commercially reasonable
efforts to resolve any such objections or challenge as such Governmental Entity
or private party may have to such transactions under such law or regulation so
as to permit consummation of the transactions contemplated by this Agreement.

         6.4 ACQUISITION PROPOSALS. The Company shall not directly or
indirectly, and it shall use all commercially reasonable efforts to cause its
officers, directors, employees, representatives, agents or affiliates, including
any investment bankers, attorneys or accountants retained by the Company or any
of its Subsidiaries or affiliates, not to, (i) solicit, initiate, knowingly
encourage or otherwise facilitate (including by way of furnishing information)
any inquiries or proposals that constitute, or could reasonably be expected to
lead to, a proposal or offer for a merger, recapitalization, consolidation,
business combination, sale of a substantial portion of the assets of the Company
and its Subsidiaries, taken as a whole, sale of 15% or more of the shares of
capital stock (including by way of a tender offer, share exchange or exchange
offer) or similar or comparable transactions involving the Company or any of its
Subsidiaries, other than the transactions contemplated by this Agreement (any
such proposal or offer (other than a proposal or offer made by Parent or an
affiliate thereof) being herein referred to as an "Acquisition Proposal"), or
(ii) engage in negotiations or discussions concerning, or provide any non-public
information to any Person relating to, any Acquisition Proposal. Notwithstanding
any other provision of this Agreement, the Board of Directors of the Company
may, at any time prior to acceptance for payment of Shares pursuant to and
subject to the conditions of the Offer (the "Specified Date"), furnish
information pursuant to a customary confidentiality agreement to, or engage in
discussions or negotiations with, any Person in response to an unsolicited bona
fide written Acquisition Proposal of such Person if, (a) the Company has not
violated any of the restrictions set forth in this Section 6.4, (b) the Board of
Directors of the Company or any committee thereof concludes in good faith after
consultation with its outside legal counsel, that


                                      -35-
   40
such action may be reasonably necessary in order for the Board of Directors of
the Company to comply with its fiduciary obligation to the shareholders of the
Company under applicable law and (c) only to the extent that, the Board of
Directors of the Company determines in good faith by a majority vote, after
consultation with its financial advisors, that such Acquisition Proposal if
consummated would constitute a Superior Proposal (as defined in Section
9.11(k)). From and after the execution of this Agreement, the Company shall
immediately advise Parent in writing of the receipt, directly or indirectly, of
any material inquiries, discussions, negotiations or proposals relating to an
Acquisition Proposal (including the specific terms thereof and the identity of
the other party or parties involved) and furnish to Parent within 24 hours of
such receipt an accurate description of all material terms (including any
changes or adjustments to such terms as a result of negotiations or otherwise)
of any such written proposal in addition to any information provided to any
third party relating thereto. Upon execution of this Agreement, the Company and
the Company Subsidiaries shall immediately cease any and all existing
activities, discussions or negotiations with any parties conducted heretofore
with respect to any Acquisition Proposal. Notwithstanding any other provision of
this Agreement, in response to an unsolicited Acquisition Proposal, the
Company's Board of Directors shall be permitted, at any time prior to the
Specified Date, (i) to withdraw, modify or change, or propose to withdraw,
modify or change, the approval or recommendation by the Board of Directors of
this Agreement, the Offer, the Merger or the other transactions contemplated by
this Agreement or (ii) to approve or recommend, or propose to approve or
recommend, any Acquisition Proposal, but only if, in each case referred to in
clauses (i) and (ii), the Board of Directors of the Company concludes in good
faith that (a) such Acquisition Proposal would, if consummated, constitute a
Superior Proposal and such proposal has not been withdrawn and (b) based on the
advice of outside counsel, and in light of such Superior Proposal that the
failure to withdraw, withhold, amend, modify or change such recommendation would
constitute a breach of the fiduciary duties of the Board of Directors of the
Company to the shareholders of the Company under applicable law. The Company
shall immediately advise Parent in writing, if the Board of Directors shall make
any determination as to any Acquisition Proposal as contemplated by the
preceding sentence. Nothing contained in this Section 6.4 shall prohibit the
Company or its Board of Directors (i) from taking and disclosing to its
shareholders a position contemplated by Rule 14d-9 and Rule 14e-2(a) promulgated
under the 1934 Act or from making any legally required disclosure to the
shareholders of the Company with regard to an Acquisition Proposal or (ii) prior
to the approval of this Agreement by the shareholders of the Company, from
taking any action as contemplated by Section 8.1(f). Nothing in this Section 6.4
shall (x) permit the Company to terminate this Agreement (except as specifically
provided in Article VIII hereof) or (y) affect any other obligation of the
Company under this Agreement.

         6.5 TREATMENT OF THE COMPANY STOCK OPTIONS; OTHER STOCK PLANS; EMPLOYEE
BENEFITS MATTERS.

         (a) Stock Options. The Company and Parent shall, to the extent
permitted under the applicable agreements covering any outstanding Company Stock
Option, effective as of the Effective Time, (i) cause each outstanding Company
Stock Option, whether or not exercisable or vested, to become fully exercisable
and vested, (ii) cause each Company Stock Option that is outstanding to be
canceled and (iii) in consideration of such cancellation, and, except to the
extent Parent and the holder of any such Company Stock Option otherwise agree,
cause the Company to pay such holders of the Company Stock Options an amount in
respect of


                                      -36-
   41
each Company Stock Option equal to the excess, if any, of the per Share Merger
Consideration over the exercise price of such Company Stock Option (such payment
to be net of applicable withholding taxes).

         (b) Section 16(b) of the Exchange Act. The Board of Directors of each
of the Company and Parent shall each grant all approvals and take all other
actions required pursuant to Rules 16b-3(d) and 16(b)-3(e) under the 1934 Act to
cause the disposition in the Merger of the Shares, the Company Stock Options and
the acquisition in the Merger of options to purchase the common stock of the
Surviving Corporation awards pertaining to and applying to the common stock of
the Surviving Corporation to be exempt from the provisions of Section 16(b) of
the 1934 Act.

         (c) Employee Issues. Subject to the limitations set forth in the second
sentence of this paragraph, Parent shall be afforded the opportunity to
interview and meet with the employees of the Company and the Company
Subsidiaries during the period commencing upon the purchase of any Shares by Sub
pursuant to the Offer and to provide such information as is reasonably necessary
with respect to terms of continued employment for such employees of the Company
and the Company Subsidiaries who will remain or are expected to remain employees
immediately after the Effective Time, which terms may be amended thereafter by
Parent in its sole discretion. The subject matter of any interview conducted by
Parent pursuant to this Section 6.5(c) shall be limited to the terms of
continued employment for the interviewee should such interviewee remain an
employee of the Company after the Effective Time. The Company shall take such
action as is necessary to terminate the 401(k) Plan maintained by the Company
prior to the earlier of (i) Sub's purchase of 80% or more of the outstanding
Shares pursuant to the Offer and (ii) the Closing, provided, however, such
action may be rescinded if Sub fails to acquire 80% or more of the outstanding
Shares. All of the employee welfare benefit plans maintained by the Company
shall be terminated effective as of the earlier of (i) Sub's purchase of 80% or
more of the outstanding Shares pursuant to the Offer and (ii) the Closing (the
date of such termination being herein referred to as the "Welfare Plan
Termination Date"). Parent shall provide the Company with notice of the Welfare
Plan Termination Date at least ten (10) Business Days prior thereto. Parent
presently intends that, except to the extent that may be required by law, after
the Welfare Plan Termination Date, Parent, the Company, the Company
Subsidiaries, the Surviving Corporation or its subsidiaries will not make
additional contributions to the employee benefit plans that were sponsored by
the Company or any of the Company Subsidiaries at any time prior to the Merger,
except for required contributions relating to periods prior to the Welfare Plan
Termination Date. Parent agrees that the employees of Company and the Company
Subsidiaries who are retained as employees of Parent (or who do not become
employees of Parent but who are entitled to elect continuation of health
insurance coverage pursuant to Section 4980B of the Code) will be entitled (in
the case of those who do not become employees of Parent only to the extent
required by Section 4980B of the Code) effective as of the day immediately
following the Welfare Termination Date to participate as newly hired employees
in the employee benefit plans and programs maintained for employees of Parent
and its affiliates, in accordance with the respective terms of such plans and
programs; provided, however, that such employees shall receive credit for
service with the Company or the Company Subsidiaries solely for purposes of plan
eligibility and vesting of benefits with respect to the welfare benefits plans
of Parent, and Parent shall take all actions necessary or appropriate (including
amending plans, if necessary) to facilitate coverage of the Company's and the


                                      -37-
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Company Subsidiaries' employees in such plans and programs from and after the
Welfare Plan Termination Date, provided, however, that any preexisting condition
exclusion or waiting period applicable to any health care plan sponsored by
Parent shall be waived with respect to any Company or any Company Subsidiary
employee.

         6.6 DIRECTORS.

         (a) Promptly upon the acceptance for payment of, and payment for, at
least 50.1% of the outstanding Shares by Sub pursuant to the Offer, and until
the Effective Time, Sub shall be entitled to designate such number of directors
on the Board of Directors of the Company as will give Sub, subject to compliance
with Section 14(f) of the 1934 Act, a majority of such directors, and the
Company shall, at such time, cause Sub's designees to be so elected by its
existing Board of Directors. In the event that Sub's designees are elected to
the Board of Directors of the Company, until the Effective Time, and subject to
the preceding sentence, such Board of Directors shall have at least three
directors who are directors on the date of this Agreement and who are not
officers of the Company (the "Independent Directors"); provided, that, in such
event, if the number of Independent Directors shall be reduced below three for
any reason whatsoever, the remaining Independent Directors shall designate a
person to fill such vacancy who shall be deemed to be an Independent Director
for purposes of this Agreement or, if no Independent Directors then remain, the
other directors shall designate three persons to fill such vacancies who shall
not be officers or affiliates of the Company or any of its subsidiaries, or
officers or affiliates of Parent or any of its subsidiaries, and such persons
shall be deemed to be Independent Directors for purposes of this Agreement.
Subject to applicable law, the Company shall take all action requested by Parent
necessary to effect any such election, including mailing to its shareholders the
Information Statement containing the information required by Section 14(f) of
the 1934 Act and Rule 14f-1 promulgated thereunder, and the Company agrees to
make such mailing with the mailing of the Schedule 14D-9 (provided that Sub
shall have provided to the Company on a timely basis all information required to
be included in the Information Statement with respect to Sub's designees). In
connection with the foregoing, the Company will promptly, at the option of
Parent, either increase the size of the Company's Board of Directors and/or
obtain the resignation of such number of its current directors as is necessary
to enable Sub's designees to be elected or appointed to, and to constitute a
majority of, the Company's Board of Directors as provided above.

         (b) The Independent Directors shall form a committee that, during the
period from the time Shares are purchased pursuant to the Offer until the
Effective Time, shall have the sole power and authority, by a majority vote of
such Independent Directors, for the Company to (a) amend or terminate this
Agreement or to extend the time for the performance of any of the obligations or
other acts of Parent or Sub under the Offer, the Merger or this Agreement, (b)
exercise or waive any of the Company's rights, benefits or remedies hereunder,
or (c) take any other action under or in connection with this Agreement if such
action materially and adversely affects holders of Shares other than Parent or
Sub.

         6.7 FEES AND EXPENSES. Whether or not the Offer or the Merger is
consummated, all Expenses (as defined below) incurred in connection with this
Agreement and the transactions contemplated hereby shall be paid by the party
incurring such Expenses, except (a) if the Merger is consummated, the Surviving
Corporation shall pay, or cause to be paid, any


                                      -38-
   43
and all property or transfer taxes imposed on the Company or its Subsidiaries
resulting from the Merger and (b) as provided in Section 8.2. As used in this
Agreement, "Expenses" includes all out-of-pocket expenses (including all fees
and expenses of counsel, accountants, investment bankers, experts and
consultants to a party hereto and its affiliates) incurred by a party or on its
behalf in connection with or related to the authorization, preparation,
negotiation, execution and performance of this Agreement and the transactions
contemplated hereby, including the preparation, printing, filing and mailing of
the Proxy Statement and the solicitation of shareholder approvals and all other
matters related to the transactions contemplated hereby.

         6.8 DIRECTORS' AND OFFICERS' INDEMNIFICATION AND INSURANCE.

         (a) After the purchase of any Shares by Sub pursuant to the Offer,
Parent and the Surviving Corporation shall, jointly and severally, indemnify and
hold harmless each present (as of the Effective Time) or former officer,
director or employee of the Company and the Company Subsidiaries (the
"Indemnified Parties"), against all claims, losses, liabilities, damages,
judgments, fines and reasonable fees, costs and expenses (including attorneys'
fees and expenses) incurred in connection with any claim, action, proceeding or
investigation, whether civil, criminal, administrative or investigative, arising
out of or pertaining to (i) the fact that the Indemnified Party is or was an
officer, director or employee of the Company or any of the Company Subsidiaries
or (ii) matters existing or occurring at or prior to the Effective Time
(including this Agreement and the transactions and actions contemplated hereby),
whether asserted or claimed prior to, at or after the Effective Time, (A) to the
same extent required under any indemnification provisions included in the
Company's or the Company Subsidiary's, as the case may be, constituent or
organizational documents as in effect on the date of this Agreement and (B)
without limitation to clause (A), to the fullest extent permitted under
applicable law; provided that no Indemnified Party may settle any such claim
without the prior approval of Parent (which approval shall not be unreasonably
withheld or delayed). In the event of any such claim, action, suit, proceeding
or investigation (an "Action"), any Indemnified Party wishing to claim
indemnification will promptly notify the Parent and the Surviving Corporation
thereof (provided that failure to so notify the Parent and the Surviving
Corporation will not affect the obligations of the Parent and the Surviving
Corporation to provide indemnification except to the extent that the Parent and
the Surviving Corporation shall have been materially prejudiced as a result of
such failure). With respect to any Action for which indemnification is
requested, the Parent and the Surviving Corporation will be entitled to
participate therein at its own expense and, except as otherwise provided below,
to the extent that it may wish, the Parent and the Surviving Corporation may
assume the defense thereof, with counsel reasonably satisfactory to the
Indemnified Party. After notice from the Parent and the Surviving Corporation to
the Indemnified Party of its election to assume the defense of an Action, the
Parent and the Surviving Corporation will not be liable to the Indemnified Party
for any legal or other expenses subsequently incurred by the Indemnified Party
in connection with the defense thereof, other than as provided below. The Parent
and the Surviving Corporation will not settle any Actions without the consent of
the Indemnified Party unless such settlement contains a complete release of all
Indemnified Parties whether or not they have been named in the Action. The
Indemnified Party will have the right to employ counsel in any Action, but the
fees and expenses of such counsel incurred after notice from the Parent and the
Surviving Corporation of its assumption of the defense thereof will be at the
expense of the Indemnified Party, unless (i) the employment of counsel by the
Indemnified Party has been authorized by the Parent and the


                                      -39-
   44
Surviving Corporation in writing, (ii) the Indemnified Party will have
reasonably concluded upon the advice of counsel that there may be a conflict of
interest between the Indemnified Party and the Parent and the Surviving
Corporation in the conduct of the defense of an Action, or (iii) the Parent and
the Surviving Corporation shall not in fact have employed counsel to assume the
defense of an Action, in each of which cases the reasonable fees and expenses of
counsel selected by the Indemnified Party (provided such counsel shall be
reasonably satisfactory to the Parent and the Surviving Corporation) shall be
advanced by the Parent or Surviving Corporation within ten Business Days of
receipt by Parent or the Surviving Corporation from the Indemnified Party of a
request therefor; provided that any person to whom expenses are advanced
provides a written affirmation by the Identified Party of his good faith belief
that he has met the standard of conduct necessary for indemnification under the
TBCA and a written undertaking, to the extent required by the TBCA, to repay
such advances if it is ultimately determined that such person is not entitled to
indemnification. Notwithstanding the foregoing, the Parent and the Surviving
Corporation will not be liable for any settlement effected without its written
consent, which will not be unreasonably withheld, conditioned or delayed, and
the Parent and the Surviving Corporation will only be obligated pursuant to this
Section 6.8(a) to pay the fees and disbursements of one counsel (provided such
limitation shall not apply to the engagement of local counsel as may be
reasonably necessary) for all Indemnified Parties in any single Action, except
to the extent two or more of such Indemnified Parties have conflicting interests
in the outcome of such Action.

         (b) The Surviving Corporation shall (i) cause to be maintained in
effect in its articles of incorporation and by-laws for a period of six years
after the Effective Time, provisions regarding elimination of liability of
directors and indemnification of, and advancement of expenses to, officers,
directors and employees that are at least as favorable to the Indemnified
Parties as those contained in the articles of incorporation and by-laws of the
Company as in effect on the date hereof and (ii) for a period of six years after
the Effective Time, shall maintain the current policies of directors' and
officers' liability insurance and fiduciary liability insurance maintained by
the Company (provided that the Surviving Corporation may substitute therefor
policies of at least the same coverage and amounts containing terms and
conditions which are, in the aggregate, no less advantageous to the insured)
with respect to claims arising from facts or events that occurred on or before
the Effective Time; provided, however, that in no event shall the Surviving
Corporation be required to expend in any one year an amount in excess of 150% of
the annual premiums currently paid by the Company for such insurance (which
premiums the Company represents to be $44,331 per year in the aggregate); and,
provided, further, that if the Surviving Corporation is unable to obtain the
insurance required by this Section 6.8 or the annual premiums of such insurance
coverage exceed such amount, the Surviving Corporation shall be obligated to
obtain a policy with the greatest coverage available for a cost not exceeding
such amount.

         (c) Notwithstanding anything herein to the contrary, if any claim,
action, proceeding or investigation (whether arising before, at or after the
Effective Time) is made against any Indemnified Party on or prior to the sixth
anniversary of the Effective Time, the provisions of this Section 6.8 shall
continue in effect until the final disposition of such claim, action, proceeding
or investigation.


                                      -40-
   45
                  (d) In the event that the Surviving Corporation or any of its
  successors or assigns (i) consolidates with or merges into any other Person
  and shall not be the continuing or surviving corporation or entity of such
  consolidation or merger or (ii) transfers or conveys all or substantially all
  of its properties and assets to any Person, then, and in each such case,
  proper provision shall be made so that the successors or assigns of the
  Surviving Corporation shall succeed to the obligations set forth in Section
  6.5 and this Section 6.8.

                  6.9 PUBLIC ANNOUNCEMENTS. The Company and Parent shall use all
commercially reasonable efforts to develop a joint communications plan and each
party shall use all commercially reasonable efforts (i) to ensure that all press
releases and other public statements with respect to the transactions
contemplated hereby shall be consistent with such joint communications plan, and
(ii) unless otherwise required by applicable law or by obligations pursuant to
any listing agreement with or rules of any securities exchange, to consult with
each other before issuing any press release or otherwise making any public
statement with respect to this Agreement or the transactions contemplated
hereby.

                  6.10 ENVIRONMENTAL INVESTIGATION; RIGHT TO TERMINATE
AGREEMENT.

                  (a) At any time prior to the Environmental Adjustment
  Determination Date, Parent and its consultants, agents and representatives,
  shall have the right, at Parent's expense, to inspect any of the parcels of
  Real Property described on Schedule 6.10 (the "Subject Properties"),
  including, without limitation, for the purpose of conducting asbestos surveys
  and sampling, and such other environmental assessments and investigations,
  including a Phase II environmental survey, as Parent may believe is reasonably
  necessary ("Environmental Inspections"). Parent shall conduct such
  Environmental Inspections as soon as reasonably practicable after the date
  hereof. Parent shall notify the Company of any physical inspections of any
  Subject Property which it intends to conduct, and the Company may place
  reasonable restrictions on the time of such inspections.

                  (b) Each party hereto agrees to indemnify and hold harmless
  the other parties for any claims for damage to the Subject Property or injury
  or death to persons in connection with any Environmental Inspection or
  secondary investigation of the Subject Property to the extent such damage,
  injury or death is directly attributable to the negligent actions or negligent
  omissions of such indemnifying party. Parent shall have no liability or
  responsibility of any nature whatsoever for the results, conclusions or other
  findings related to any Environmental Inspection, secondary investigation or
  other environmental survey. If this Agreement is terminated, then except as
  otherwise required by law, Parent shall have no obligation to make any reports
  to any governmental authority of the results of any Environmental Inspection,
  secondary investigation or other environmental survey, but such reporting
  shall remain the responsibility of and within the discretion of the Company.
  Parent shall have no liability to the Company or the Company Subsidiaries for
  making any report of such results to any governmental authority. If the Offer
  or the Merger is not consummated other than as a result of any breach of any
  provision of this Agreement by the Company, or either of them, Parent shall
  reimburse the Company and the Company Subsidiaries for all reasonable costs
  and expenses incurred as a result of any Environmental Inspection conducted at
  Parent's request.

                                      -41-
   46
                  (c) As used in this Agreement, (i) the term "Environmental
  Adjustment Amount" means the Environmental Expenditure Amount (as defined
  below) minus $200,000; (ii) "Environmental Expenditure Amount" shall be
  calculated as of the Environmental Expenditure Determination Date (as defined
  below) and shall equal the aggregate amount of all expenditures made or
  required to be made to remedy or cure any of the following: (1) outstanding
  fines, penalties or other damages with respect to any Subject Property, (2)
  investigation, remediation or monitoring of any Subject Property (including
  without limitation eventual removal of asbestos-containing material), (3)
  preparing and obtaining approval by the appropriate Environmental Regulatory
  Authority of remediation plans with respect to Subject Properties, or (4) any
  violations of applicable Environmental Laws with respect to any Subject
  Property; (iii) the "Environmental Adjustment Determination Date" shall be the
  date which is three (3) Business Days prior to the Determination Date; and
  (iv) the "Per Share Environmental Adjustment Amount" shall mean the quotient
  of (x) the Environmental Adjustment Amount divided by (y) the sum of (1) the
  number of Shares issued and outstanding immediately prior to the commencement
  of the Offer plus (2) the number of Shares issuable with respect to the
  Company Stock Options outstanding immediately prior to the commencement of the
  Offer assuming for purposes of this calculation that all outstanding Company
  Stock Options are immediately exercisable and fully vested.

                  (d) Parent shall notify the Company of the Environmental
  Adjustment Amount in writing by 5:00 p.m., San Antonio, Texas time, on or
  prior to the Environmental Adjustment Determination Date. Notwithstanding
  anything to the contrary contained in this Agreement, if the Environmental
  Adjustment Amount is in excess of $200,000, then the Company may, within one
  (1) Business Day of its receipt of notice of the Environmental Adjustment
  Amount deliver a notice to Parent stating its intent to terminate this
  Agreement unless Parent agrees in writing within one (1) Business Day of its
  receipt of said notice to limit the Environmental Adjustment Amount to
  $200,000. Upon Parent's agreement in writing to so limit the Environmental
  Adjustment Amount to $200,000, the Environmental Adjustment Amount shall be
  limited to $200,000. If Parent shall not have agreed in writing to limit the
  Environmental Adjustment Amount to $200,000 within one (1) Business Day of its
  receipt of any said notice, the Company may terminate this Agreement at any
  time on or prior to the Determination Date by delivering written notice of
  such termination to Parent by 5:00 p.m., San Antonio, Texas time, on or prior
  to such date. If the Company does not exercise its option to terminate
  pursuant to this Section 6.10(d), then the Environmental Adjustment Amount
  shall be the amount provided in the notice delivered pursuant to the first
  sentence of this Section 6.10(d).

         In the event this Agreement is terminated pursuant solely to this
Section 6.10(d), the Company and Parent shall not have any liability to the
other pursuant to this Agreement.

                  (e) The Company agrees to make available to Parent and its
  consultants, agents and representatives all documents and other material
  relating to environmental conditions of the Property including, without
  limitation, the results of all other environmental inspections and surveys.
  The Company also agrees that all engineers and consultants who prepared or
  furnished such reports may discuss such reports and information with Parent
  and shall be entitled to certify the same in favor of Parent and its
  consultants, agents and representatives in such a manner which will entitle
  Parent to rely upon such reports and make

                                      -42-
   47
  all other data available to Parent and its consultants, agents and
  representatives. At the written request of the Company, Parent agrees to
  provide the Company with a copy of all environmental reports prepared by its
  consultants as a result of the Environmental Inspections. Parent shall keep
  confidential the reports, surveys and results relating to and of the
  Environmental Inspections, unless otherwise required by law.

                  6.11 INVESTMENT PORTFOLIO.

                  (a) Subject to the remaining provisions of this Section 6.11,
  the Company shall at all times prior to the Closing cause the Investment
  Portfolio (as hereinafter defined) to be composed entirely and exclusively of
  the securities comprising the same as of the date hereof and shall not dispose
  of, and shall cause each of its subsidiaries not to dispose of, any such
  securities; provided, however, that, at any time after the Determination Date,
  the Company shall dispose of all or any portion of the Investment Portfolio as
  promptly as practicable after receiving written instructions from Parent
  directing the Company to effect such a disposition; and, provided, further,
  that, if at any time the Portfolio Gain of the Investment Portfolio is at or
  below $8,500,000, the Company shall, upon the written request of Parent,
  promptly dispose of all (or such other portion as Parent may direct) of the
  securities in the Investment Portfolio in a commercially reasonable manner.

                  (b) From the date of this Agreement through the Effective
  Time, the Company shall cause the proceeds of any sale, redemption or payment
  upon maturity of any securities constituting part of the Investment Portfolio
  to be invested exclusively in Permitted Investments (as hereinafter defined).

                                  ARTICLE VII.

                              CONDITIONS PRECEDENT

                  7.1 CONDITIONS TO EACH PARTY'S OBLIGATION TO EFFECT THE
MERGER. The obligations of the Company, Parent and Merger Sub to effect the
Merger are subject to the satisfaction or waiver on or prior to the Closing of
the following conditions:

                  (a) Shareholder Approval. If required by applicable law, the
  Company Shareholder Approval shall have been obtained.

                  (b) No Injunctions or Restraints; Illegality. No federal,
  state, local or foreign, if any, law, statute, regulation, code, ordinance or
  decree shall have been adopted or promulgated, and no temporary restraining
  order, preliminary or permanent injunction or other order issued by a court or
  other Governmental Entity of competent jurisdiction shall be in effect, having
  the effect of making the Merger illegal or otherwise prohibiting consummation
  of the Merger; provided, however, that the provisions of this Section 7.1(b)
  shall not be available to any party whose failure to fulfill its obligations
  pursuant to Section 6.3 shall have been the cause of, or shall have resulted
  in, such order or injunction.

                  (c) Governmental Approvals. All approvals required for the
  Merger from Governmental Entities, including, without limitation, those
  required under the BHC Act, shall

                                      -43-
   48
  have been obtained (and any applicable waiting periods with respect thereto
  shall have expired) other than those the failure of which to be obtained would
  not reasonably be expected to result in a Material Adverse Effect on Parent
  and its Subsidiaries (including the Surviving Corporation and its
  Subsidiaries), taken together, and such approvals shall not have imposed any
  condition or requirement which in the reasonable judgment of the party or
  parties affected by such condition or requirement would adversely impact in a
  material respect the intended economic benefits to such party of the
  transactions contemplated by this Agreement.

                  (d) Purchase of Shares. Sub shall have previously accepted for
  payment and paid for Shares pursuant to the Offer.

                                 ARTICLE VIII.

                            TERMINATION AND AMENDMENT

                  8.1 TERMINATION. This Agreement may be terminated at any time
prior to the Effective Time, by action taken or authorized by the Board of
Directors of the terminating party or parties, and except as provided below,
whether before or after approval of the matters presented in connection with the
Merger by the shareholders of the Company or Sub:

                  (a) By the mutual written consent of Parent and the Company,
  by action of their respective Boards of Directors, provided, however, that
  following the election or appointment of Sub's designees pursuant to Section
  6.6, such consent of the Company may only be given if approved by the
  Independent Directors;

                  (b) by either Parent or the Company if (i) as of the result of
  the failure of any of the conditions set forth in Annex A, the Offer shall
  have terminated or expired in accordance with its terms without Sub having
  purchased any Shares pursuant to the Offer or (ii) Sub shall not have accepted
  for payment any Shares pursuant to the Offer prior to December 31, 2001 (the
  "Outside Date"); provided, however, that the right to terminate this Agreement
  pursuant to this Section 8.1(b) shall not be available to any party whose
  failure to perform any of its obligations under this Agreement has to any
  extent been the cause of, or resulted in, such failure of any of the
  conditions set forth in Annex A or such failure by Sub to have accepted for
  payment any Shares prior to the Outside Date;

                  (c) By either the Company or Parent if any Governmental Entity
  (i) shall have issued an order, decree or ruling or taken any other action
  (which the parties shall have used all commercially reasonable efforts to
  resist, resolve or lift, as applicable, in accordance with Section 6.3)
  permanently restraining, enjoining or otherwise prohibiting the consummation
  of the Offer or the Merger, and such order, decree, ruling or other action
  shall have become final and nonappealable or (ii) shall have failed to issue
  an order, decree or ruling or to take any other action (which order, decree,
  ruling or other action the parties shall have used all commercially reasonable
  efforts to obtain, in accordance with Section 6.3), that is necessary to
  fulfill the conditions set forth in subsections 7.1(c) and (d), as applicable,
  and such failure to issue such order, decree, ruling or take such other action
  shall have become final and nonappealable; provided, however, that the right
  to terminate this Agreement under this Section 8.1(c) shall not

                                      -44-
   49
  be available to any party whose failure to comply with Section 6.3 has to any
  extent been the cause of such action or inaction;

                  (d) By either the Company or Parent if the Company Shareholder
  Approval is required by applicable law and it has not been obtained at a duly
  held meeting of shareholders of the Company, or at any adjournment thereof;

                  (e) By Parent if, prior to the purchase of any Shares by Sub
  pursuant to the Offer, (i) the Board of Directors of the Company, or any
  committee thereof, (A) shall have failed to recommend to the shareholders of
  the Company that they accept the Offer, tender their shares pursuant to the
  Offer and approve this Agreement, (B) shall approve or recommend a Superior
  Proposal pursuant to Section 6.4, or (C) shall resolve to take any of the
  actions specified in clauses (A) or (B) above, or (ii) a tender or exchange
  offer relating to the capital stock of the Company shall have been commenced
  by a person unaffiliated with Parent, and the Company shall not have sent to
  its shareholders pursuant to Rule 14e-2 promulgated under the 1933 Act, within
  ten (10) business days after such tender or exchange offer is first published,
  sent or given, a statement disclosing that the Company recommends rejection of
  such tender or exchange offer;

                  (f) By the Company at any time, prior to the purchase of any
  Shares by Sub pursuant to the Offer, if the Board of Directors of the Company
  shall approve a Superior Proposal; provided, however, that prior to any such
  termination, the Company shall, and shall cause its financial and legal
  advisors to, provide Parent with a reasonable opportunity (not to exceed a
  period of three Business Days unless otherwise agreed in writing) to make
  adjustments in the terms and conditions of this Agreement sufficient to cause
  the Board of Directors of the Company to determine that such Superior Proposal
  no longer constitutes a Superior Proposal;

                  (g) By Parent, if, prior to the purchase of any Shares by Sub
  pursuant to the Offer, the Company shall have breached any representation,
  warranty, covenant or agreement contained in this Agreement, or if any
  representation or warranty of the Company shall have become untrue, in either
  case such that the conditions set forth in paragraph (e) or (f) of Annex A
  would not be satisfied as of the time of such breach or as of the time such
  representation or warranty shall have become untrue; or

                  (h) By the Company, if, prior to the consummation of the
  Offer, Parent or Sub shall have breached in any material respect any
  representation, warranty, covenant or agreement contained in this Agreement,
  or if any representation or warranty of Parent or Sub shall have become untrue
  in any material respect.

                  8.2 EFFECT OF TERMINATION.

                  (a) In the event of termination of this Agreement by either
  the Company or Parent as provided in Section 8.1, this Agreement shall
  forthwith become void and there shall be no liability or obligation on the
  part of Parent or the Company or their respective officers or directors except
  with respect to Section 6.2(b), Section 6.7, this Section 8.2 and Article IX;
  provided, however, that nothing herein shall relieve any party from liability
  for the willful

                                      -45-
   50
  breach of any of its representations, warranties, covenants or agreements set
  forth in this Agreement.

                  (b) Parent and the Company agree that, (i) if the Parent shall
  terminate this Agreement pursuant to Section 8.1(e), (ii) if either the Parent
  or the Company shall terminate this Agreement pursuant to Section 8.1(b)(i)
  (as a result of the Minimum Tender Condition (as defined in Annex A)) or
  Section 8.1(b)(ii) and at the time of such termination an Acquisition Proposal
  shall exist and within 12 months of such termination the Company enters into a
  definitive agreement with respect to, or consummates, any Acquisition Proposal
  (for purposes of this clause (ii) "Acquisition Proposal" shall have the
  meaning assigned to such term in Section 6.4 except that (x) the references to
  "15%" in the definition of "Acquisition Proposal" shall each be deemed to be a
  reference to "50%" and (y) "Acquisition Proposal" shall only be deemed to
  refer to a transaction involving the Company, or with respect to assets
  (including the shares of any Subsidiary of the Company) of the Company and its
  Subsidiaries, taken as a whole, and not any of its Subsidiaries alone, or
  (iii) if the Company shall terminate this Agreement pursuant to Section
  8.1(f), then, in any such case, the Company shall pay to Parent cash in the
  amount of $3,000,000 (the "Termination Fee"). The Termination Fee required to
  be paid to Parent pursuant to this Section 8.2(b) shall be paid (x) with
  respect to terminations described under Section 8.2(b)(i), within five (5)
  Business Days after termination, (y) with respect to terminations described
  under Section 8.2(b)(ii), within five (5) Business Days after the earlier of
  (A) the date the Company consummates an Acquisition Proposal with a third
  party or (B) the date the Company enters into a definitive agreement with a
  third party with respect to an Acquisition Proposal and (z) with respect to
  terminations described under Section 8.2(b)(iii), prior to, and shall be a
  condition precedent to the effectiveness of such termination.

                  (c) All payments under this Section 8.2 shall be made by wire
  transfer of immediately available funds to an account designated by the party
  entitled to receive payment.

                  8.3 AMENDMENT. This Agreement may be amended by the parties
hereto, by action taken or authorized by their respective Boards of Directors,
at any time before or after approval of the matters presented in connection with
the Merger by the shareholders of the Company and Sub, provided, however, that
after the purchase of Shares pursuant to the Offer, no amendment may be made
which decreases the Merger Consideration or otherwise negatively impacts the
shareholders of the Company, and, after the Company Shareholder Approval has
been obtained, no amendment shall be made which by law or in accordance with the
rules of any relevant stock exchange requires further approval by such
shareholders without such further approval. This Agreement may not be amended
except by an instrument in writing signed on behalf of each of the parties
hereto.

                  8.4 EXTENSION; WAIVER. At any time prior to the Effective
Time, the parties hereto, by action taken or authorized by their respective
Boards of Directors, may, to the extent legally allowed, (i) extend the time for
the performance of any of the obligations or other acts of the other parties
hereto, (ii) waive any inaccuracies in the representations and warranties
contained herein or in any document delivered pursuant hereto and (iii) waive
compliance with any of the agreements or conditions contained herein. Any
agreement on the part of a party hereto to any such extension or waiver shall be
valid only if set forth in a written instrument

                                      -46-
   51
signed on behalf of such party. The failure of any party to this Agreement to
assert any of its rights under this Agreement or otherwise shall not constitute
a waiver of those rights.

                                  ARTICLE IX.

                               GENERAL PROVISIONS

                  9.1 NON-SURVIVAL OF REPRESENTATIONS, WARRANTIES AND
AGREEMENTS. None of the representations, warranties, covenants and other
agreements in this Agreement or in any instrument delivered pursuant to this
Agreement, including any rights arising out of any breach of such
representations, warranties, covenants and other agreements, shall survive the
Effective Time, except for those covenants and agreements contained herein and
therein that by their terms apply or are to be performed in whole or in part
after the Effective Time (including, without limitation, Section 8.2) and this
Article IX. Nothing in this Section 9.1 shall relieve any party for any breach
of any representation, warranty, covenant or other agreement in this Agreement
occurring prior to termination.

                  9.2 NOTICES. All notices and other communications hereunder
shall be in writing and shall be deemed duly given (a) on the date of delivery
if delivered personally, or by telecopy or telefacsimile, upon confirmation of
receipt, (b) on the first Business Day following the date of dispatch if
delivered by a recognized next-day courier service, or (c) on the tenth Business
Day following the date of mailing if delivered by registered or certified mail,
return receipt requested, postage prepaid. All notices hereunder shall be
delivered as set forth below, or pursuant to such other instructions as may be
designated in writing by the party to receive such notice:


                  (a)      if to Parent or Sub, to:

                           International Bancshares Corporation
                           1200 San Bernardo Ave.
                           Laredo, Texas  78040
                           Fax:  (956) 726-6616
                           Attention:  Dennis E. Nixon, President

                           with a copy to:

                           Cox & Smith Incorporated
                           112 E. Pecan, Suite 1800
                           San Antonio, Texas 78205
                           Fax:  (210) 226-8395
                           Attention:  Cary Plotkin Kavy

                                      -47-
   52
                  (b)      if to the Company or the Company Subsidiaries, to

                           National Bancshares Corporation of Texas
                           12400 Highway 281 North
                           San Antonio, Texas 78216
                           Fax: (210) 403-4274
                           Attention:  Marvin E. Melson, President

                           with a copy to:

                            Bracewell & Patterson, L.L.P.
                           111 Congress, Suite 2300
                           Austin, Texas  78701
                           Fax: (512) 479-3906
                           Attention: Joseph Ford

                           and

                            Cadwalader, Wickersham & Taft
                           100 Maiden Lane
                           New York, NY  10038
                           Fax: (212) 504-5557
                           Attention:  Dennis J. Block


                  9.3 INTERPRETATION. When a reference is made in this Agreement
to Sections, Exhibits, Annexes or Schedules, such reference shall be to a
Section of or Exhibit, Annex or Schedule to this Agreement unless otherwise
indicated. The table of contents, glossary of defined terms and headings
contained in this Agreement are for reference purposes only and shall not affect
in any way the meaning or interpretation of this Agreement. Whenever the words
"include", "includes" or "including" are used in this Agreement, they shall be
deemed to be followed by the words "without limitation".

                  9.4 COUNTERPARTS. This Agreement may be executed in one or
more counterparts, all of which shall be considered one and the same agreement
and shall become effective when one or more counterparts have been signed by
each of the parties and delivered to the other parties, it being understood that
the parties need not sign the same counterpart.

                  9.5 ENTIRE AGREEMENT; THIRD PARTY BENEFICIARIES.

                  (a) This Agreement constitutes the entire agreement and
  supersedes all prior agreements and understandings, both written and oral,
  among the parties with respect to the subject matter hereof.

                  (b) This Agreement shall be binding upon and inure solely to
  the benefit of each party hereto, and nothing in this Agreement, express or
  implied, is intended to or shall confer upon any other Person any right,
  benefit or remedy of any nature whatsoever under or by

                                      -48-
   53
  reason of this Agreement, other than Section 6.5 and Section 6.8 (which is
  intended to be for the benefit of the Persons covered thereby and may be
  enforced by such Persons).

                  9.6 GOVERNING LAW. This Agreement shall be governed and
construed in accordance with the laws of the State of Texas.

                  9.7 SEVERABILITY. If any term or other provision of this
Agreement is invalid, illegal or incapable of being enforced by any law or
public policy, all other terms and provisions of this Agreement shall
nevertheless remain in flail force and effect so long as the economic or legal
substance of the transactions contemplated hereby is not affected in any manner
materially adverse to any party. Upon such determination that any term or other
provision is invalid, illegal or incapable of being enforced, the parties hereto
shall negotiate in good faith to modify this Agreement so as to effect the
original intent of the parties as closely as possible in an acceptable manner in
order that the transactions contemplated hereby are consummated as originally
contemplated to the greatest extent possible.

                  9.8 ASSIGNMENT. Neither this Agreement nor any of the rights,
interests or obligations hereunder shall be assigned by any of the parties
hereto, in whole or in part (whether by operation of law or otherwise), without
the prior written consent of the other parties, and any attempt to make any such
assignment without such consent shall be null and void. Subject to the preceding
sentence, this Agreement will be binding upon, inure to the benefit of and be
enforceable by the parties and their respective successors and assigns.

                  9.9 SUBMISSION TO JURISDICTION; WAIVERS. Subject to Section
9.13 hereof, each of Parent, Sub and the Company irrevocably agrees that any
legal action or proceeding with respect to this Agreement or for recognition and
enforcement of any judgment in respect hereof brought by any party hereto or its
successors or assigns may be brought and determined in the Courts of the State
of Texas located in Bexar County, Texas, or in the United States Courts in or
for the Western District of Texas, in each case having subject matter
jurisdiction, and each of Parent, Sub and the Company hereby irrevocably submits
with regard to any such action or proceeding for itself and in respect to its
property, generally and unconditionally, to the nonexclusive jurisdiction of the
aforesaid courts. Subject in each case to Section 9.13, each of Parent, Sub and
the Company hereby irrevocably waives, and agrees not to assert, by way of
motion, as a defense, counterclaim or otherwise, in any action or proceeding
with respect to this Agreement, (a) any claim that it is not personally subject
to the jurisdiction of the above-named courts for any reason other than the
failure to serve process in accordance with this Section 9.9, (b) that it or its
property is exempt or immune from jurisdiction of any such court or from any
legal process commenced in such courts (whether through service of notice,
attachment prior to judgment, attachment in aid of execution of judgment,
execution of judgment or otherwise) and (c) to the fullest extent permitted by
applicable law, that (i) the suit, action or proceeding in any such court is
brought in an inconvenient forum, (ii) the venue of such suit, action or
proceeding is improper and (iii) this Agreement, or the subject matter hereof,
may not be enforced in or by such courts.

                  9.10 ENFORCEMENT. The parties agree that irreparable damage
would occur in the event that any of the provisions of this Agreement were not
performed in accordance with their specific terms. It is accordingly agreed that
the parties shall be entitled to specific

                                      -49-
   54
performance of the terms hereof, this being in addition to any other remedy to
which they are entitled at law or in equity.

                  9.11 DEFINITIONS. As used in this Agreement:

                  (a) "Board of Directors" means the Board of Directors of any
  specified Person and any committees thereof.

                  (b) "Business Day" means any day other than Saturday, Sunday
  or a federal holiday.

                  (c) "Investment Portfolio" mean the securities investment
  portfolio of NBC Bank, N.A., a wholly owned subsidiary of the Company. The
  Investment Portfolio shall be deemed to consist only of those securities that
  are a part thereof as of the date of this Agreement, which securities are more
  particularly described on Schedule 9.11(c).

                  (d) "knowledge" when used with respect to any party means the
  knowledge of any senior executive officer of such party after reasonable
  inquiry.

                  (e) "Material Adverse Effect" means, with respect to any
  entity, any adverse change, circumstance or effect that is materially adverse
  to the business, assets, liabilities, financial condition or results of
  operations of such entity and its Subsidiaries taken as a whole, other than
  any change, circumstance or effect relating to (i) the economy or securities
  markets in general, (ii) regional economic conditions that have a similar
  effect on other participants in such region in the industries which Parent or
  the Company, as the case may be, operates, (iii) the industries in which
  Parent or the Company, as the case may be, operates and not specifically
  relating to (or having the effect of specifically relating to or having a
  materially disproportionate effect (relative to most other industry
  participants) on ) Parent or the Company, as the case may be, (iv) changes in
  any tax laws or regulations or applicable accounting regulations or principles
  in each case not specifically relating to Parent or the Company, as the case
  may be, or (v) actions or omissions by either Parent or the Company, or any of
  their Subsidiaries, as the case may be, taken with the written permission of
  the other party in connection with the transactions contemplated hereby.

                  (f) "the other party" means, with respect to the Company,
  Parent and means, with respect to Parent, the Company.

                  (g) "Person" means an individual, corporation, limited
  liability company, partnership, association, trust, unincorporated
  organization, other entity or group (as defined in the Exchange Act).

                  (h) "Permitted Investments" means any of the following: Fed
  Funds, United States government securities with maturities of less than one
  year, or such other securities as the parties may agree.

                  (i) "Portfolio Gain" means, as of any date, an aggregate
  amount equal to the sum of (i) the unrecognized market appreciation (net of
  unrecognized market losses) applicable to the Investment Portfolio (or, when
  used with respect to any security constituting part of the

                                      -50-
   55
  Investment Portfolio, such security), such amount to be determined based on
  the closing market values of the securities comprising the Investment
  Portfolio on such date as posted by Bloomberg L.P., plus (ii) with respect to
  any security constituting part of the Investment Portfolio that has been sold
  after the date hereof but on or prior to such date, the actual realized profit
  with respect to such security (and any actual realized losses with respect to
  any such security shall be deemed a negative Portfolio Gain), plus (iii)
  $746,000.

                  (j) "Subsidiary" when used with respect to any party means any
  corporation or other organization, whether incorporated or unincorporated, (i)
  of which such party or any other Subsidiary of such party is a general partner
  (excluding partnerships, the general partnership interests of which held by
  such party or any Subsidiary of such party do not have a majority of the
  voting interests in such partnership) or (ii) at least a majority of the
  securities or other interests of which having by their terms ordinary voting
  power to elect a majority of the Board of Directors or others performing
  similar functions with respect to such corporation or other organization is
  directly or indirectly owned or controlled by such party or by any one or more
  of its Subsidiaries, or by such party and one or more of its Subsidiaries.

                  (k) "Superior Proposal" means a bona fide Acquisition Proposal
  the terms of which the Board of Directors of the Company concludes in good
  faith (after consultation with its financial advisors and legal counsel),
  taking into account all legal, financial, regulatory and other aspects of such
  proposal, including any condition to the consummation of such proposal, and
  the Person making the proposal, (i) would, if consummated, result in a
  transaction that is more favorable to holders of the Shares (in their capacity
  as shareholders) from a financial point of view than the transactions
  contemplated by this Agreement and (ii) is reasonably capable of being
  completed (provided that for purposes of this definition the term Acquisition
  Proposal shall have the meaning assigned to such term in Section 6.4 except
  that (x) the references to "15%" in the definition of "Acquisition Proposal"
  shall each be deemed to be a reference to "50%" and (y) "Acquisition Proposal"
  shall only be deemed to refer to a transaction involving the Company, or with
  respect to assets (including the shares of any Subsidiary of the Company) of
  the Company and its Subsidiaries, taken as a whole, and not any of its
  Subsidiaries alone.

                  (l) "Tax" (and with correlative meaning, "Taxes") means any
  U.S. federal, state, local or foreign income, gross receipts, license,
  payroll, employment, excise, stamp, occupation, premium, windfall profits,
  customs duties, franchise, withholding, social security (or similar),
  unemployment, disability, real property, personal property, sales, use,
  transfer, alternative or add-on minimum, or other tax of any kind whatsoever,
  including any interest, penalty or addition thereto, whether disputed or not.

                  (m) "Tax Return" means any return, declaration, report, claim
  for refund or information return or statement relating to Taxes, including any
  schedule or attachment thereto, and any amendment thereof. ----------

                  9.12 OTHER AGREEMENTS. The parties hereto acknowledge and
agree that, except as otherwise expressly set forth in this Agreement, the
rights and obligations of the Company and Parent under any other agreement
between the parties shall not be affected by any provision of this Agreement.

                                      -51-
   56
                  9.13 ARBITRATION; WAIVER OF TRIAL BY JURY. The parties shall
submit to binding arbitration by a board of three arbitrators any disputed
question or controversy arising under this Agreement or arising out of or
relating to the transactions contemplated by the Agreement. Any such arbitration
shall be conducted at San Antonio, Bexar County, Texas. Any party may initiate
the arbitration, by notice in writing to the other parties, setting forth the
nature of the dispute, the amount involved, if any, and the remedy sought. Any
party desiring to initiate arbitration shall serve a written notice of intention
to arbitrate to the other party and to the American Arbitration Association
office in or closest to San Antonio, Texas within 180 days after dispute has
arisen. A dispute is deemed to have arisen upon receipt of written demand or
service of judicial process. Failure to serve a notice of intention to arbitrate
within the time specified above shall be deemed a waiver of the notifying
party's right to compel arbitration of such claim. Such notice of intention to
arbitrate may be informal and need not comply with Rule 6 of the American
Arbitration Association. Legal action regarding this Agreement and any
liabilities hereunder shall either be brought by arbitration, as described
herein, or by judicial proceedings, but shall not be pursued in different or
alternative forums. The issue of waiver pursuant to this paragraph is an
arbitrable issue.

         The board of three arbitrators shall be appointed promptly upon written
application of the initiating party, and shall be selected in accordance with
the Commercial Arbitration Rules of the American Arbitration Association. All of
the arbitrators shall be members of the American Arbitration Association, and,
if commercially reasonable, at least two of the arbitrators shall be experienced
in the financial services industry. Depositions may be taken and other discovery
obtained in any arbitration under this Agreement. The board of arbitrators
appointed hereunder shall conduct the arbitration pursuant to the Commercial
Arbitration Rules of the American Arbitration Association then in effect, except
as such rules may be modified for the purpose of the arbitration proceeding by
action of a majority vote of the arbitrators or by mutual written agreement of
the parties to this Agreement.

         In the arbitration proceeding subject to these provisions, the
arbitrators, or a majority of them, are specifically empowered to decide (by
documents only, or with a hearing, at the arbitrators sole discretion)
pre-hearing motions which are substantially similar to pre-hearing motions to
dismiss and motions for summary adjudication.

         The award of the arbitrators shall be final and binding upon the
parties and judgment thereon may be entered in any court having jurisdiction.

         All statutes of limitations which would otherwise be applicable shall
apply to any arbitration proceeding hereunder.

         The provisions of this Section shall survive any termination,
amendment, or expiration of the Agreement in which this section is contained,
unless all the Parties otherwise expressly agree in writing.

         The parties acknowledge that this Agreement evidences a transaction
involving interstate commerce. The Federal Arbitration Act shall govern the
interpretation, enforcement, and proceedings pursuant to the arbitration clause
in this Agreement.

                                      -52-
   57
         The arbitrators, or a majority of them, shall award attorney's fees and
costs to the prevailing party pursuant to the terms of this Agreement.

         Venue of any arbitration proceeding hereunder will be in Bexar County,
Texas.

         Except as set forth above concerning awards to the prevailing party,
each party shall bear its own expenses in connection with preparation for the
presentation of its case at the arbitration proceedings and the fees and
expenses of the arbitrators and all other expenses of the arbitration (except
those referred to in the preceding sentence) shall be borne equally by the
parties to such arbitration.

         EACH OF THE PARTIES TO THIS AGREEMENT WAIVES ANY RIGHT TO TRIAL BY JURY
OF ANY DISPUTE OF ANY NATURE WHATSOEVER THAT MAY ARISE BETWEEN THEM, INCLUDING,
BUT NOT LIMITED TO, THOSE DISPUTES RELATING TO OR INVOLVING IN ANY WAY THE
CONSTRUCTION, PERFORMANCE OR BREACH OF THIS AGREEMENT OR ANY OTHER AGREEMENT
BETWEEN THE PARTIES, THE PROVISIONS OF ANY FEDERAL, STATE OR LOCAL LAW,
REGULATION OR ORDINANCE NOTWITHSTANDING. By execution of this Agreement, each of
the parties hereto acknowledges and agrees that it has had an opportunity to
consult with legal counsel and that he/she/it knowingly and voluntarily waives
any right to a trial by jury of any dispute pertaining to or relating in any way
to the Subject Transactions, the provisions of any federal, state or local law,
regulation or ordinance notwithstanding.


                            Intentionally Left Blank


                                      -53-
   58
                  IN WITNESS WHEREOF, Parent, the Company and Sub have caused
this Agreement to be signed by their respective officers thereunto duly
authorized, all as of the day and year first above written.


                                       INTERNATIONAL BANCSHARES CORPORATION



                                       By: /s/ DENNIS E. NIXON
                                          -------------------------------------
                                          Name:  Dennis E. Nixon
                                          Title:  President


                                       NBC ACQUISITION CORP.



                                       By: /s/ DENNIS E. NIXON
                                          -------------------------------------
                                          Name:  Dennis E. Nixon
                                          Title:  President


                                       NATIONAL BANCSHARES CORPORATION OF TEXAS



                                       By: /s/ MARVIN E. MELSON
                                          -------------------------------------
                                          Name: Marvin E. Melson
                                          Title: President


                                      -54-
   59
                Secretary's Certificate of NBC Acquisition Corp.

                  The undersigned being Secretary of NBC Acquisition Corp. does
hereby certify that the foregoing Agreement and Plan of Merger was duly adopted
by the sole shareholder of the Corporation.



                                          -------------------------------------
                                                        Secretary




                     Secretary's Certificate of the Company

                  The undersigned being Secretary of the Company does hereby
certify that the foregoing Agreement and Plan of Merger was duly adopted by the
holders of a majority of the outstanding shares of capital stock of the
Corporation entitled to vote thereon.



                                          -------------------------------------
                                                        Secretary



   60
                                   APPENDIX A

                         Defined Terms in the Agreement




DEFINITION                                                  SECTION
                                                         
1933 Act...............................................     Section 4.l(c)

1934 Act...............................................     Section 1.1(b)

Acquisition Proposal...................................     Section 6.4

Action.................................................     Section 6.8(a)

Agreement..............................................     Preamble

Audited Financial Statements...........................     Section 4.1(d)

BHC Act................................................     Section 4.1(h)(iii)

Board of Directors.....................................     Section 9.11(a)

Business Day...........................................     Section 9.11(b)

Certificates...........................................     Section 3.4(b)

Closing................................................     Section 1.5

Closing Date...........................................     Section 1.5

Code...................................................     Section 3.5

Common Control Entities................................     Section 4.1(o)(vii)

Company................................................     Preamble

Company Board Approval.................................     Section 4.1(j)

Company Disclosure Schedule............................     Section 4.1

Company Required Consents..............................     Section 4.1(h)(iii)

Company SEC Reports....................................     Section 4.l(i)

Company Shareholder Approval...........................     Section 4.1(k)

Company Shareholders Meeting...........................     Section 6.1(b)

   61


DEFINITION                                                  SECTION
                                                         
Company Stock Options..................................     Section 4.1(c)(iii)

Company Subsidiaries...................................     Section 4.1(a)

Contracts..............................................     Section 4.1(w)

Determination Date.....................................     Section 1.1(c)(i)

Dissenting Shareholder.................................     Section 3.2

Dissenting Shares......................................     Section 3.2

Effective Time.........................................     Section 1.4

Environmental Adjustment Amount........................     Section 6.10(c)

Environmental Adjustment Determination Date............     Section 6.10(c)

Environmental Expenditure Amount.......................     Section 6.10(c)

Environmental Inspections..............................     Section 6.10(a)

ERISA..................................................     Section 4.1(o)(i)

Exchange Fund..........................................     Section 3.4(a)

Expenses...............................................     Section 6.7

GAAP...................................................     Section 4.1(d)

Governmental Entity....................................     Section 4.1(h)(iii)

Hazardous Materials....................................     Section 4.1(g)(ii)

Hazardous Materials Contamination......................     Section 4.1(g)(ii)

Intended Take-Down Date................................     Section 1.1(c)(ii)

Indemnified Parties....................................     Section 6.8(a)

Independent Directors..................................     Section 6.6(a)

Information Statement..................................     Section 4.1(aa)

Investment Portfolio...................................     Section 9.11(c)

Knowledge..............................................     Section 9.11(d)

   62


DEFINITION                                                  SECTION
                                                         
Loans..................................................     Section 4.1(e)(i)

Material Adverse Effect................................     Section 9.11(e)

Merger.................................................     Recitals

Merger Consideration...................................     Section 1.1(c)

Minimum Tender Condition...............................     Annex A

Offer..................................................     Recitals

Offer Documents........................................     Section 1.1(b)

Other Programs.........................................     Section 4.1(o)(iii)

Outside Date...........................................     Section 8.1(b)

Parent.................................................     Preamble

Parent Financial Advisor...............................     Section 4.2(c)

Parent Required Consents...............................     Section 4.2(b)(iii)

Paying Agent...........................................     Section 3.4(a)

Pension Benefit Plans..................................     Section 4.1(o)(ii)

Per Share Environmental Adjustment Amount..............     Section 6.10(c)

Permitted Investments..................................     Section 9.11(h)

Person.................................................     Section 9.11(g)

Portfolio Gain.........................................     Section 9.11(i)

Proxy Statement........................................     Section 6.1(a)

Real Property..........................................     Section 4.1(g)

Regulatory Authorities.................................     Section 4.1(s)

Schedule 14D-9.........................................     Section 1.2(b)

SEC....................................................     Section 1.1(a)

Shareholder Agreements.................................     Recitals

   63


DEFINITION                                                  SECTION
                                                         
Shares.................................................     Recitals

Specified Date.........................................     Section 6.4

Sub....................................................     Preamble

Subject Properties.....................................     Section 6.10

Subsidiary.............................................     9.11(j)

Superior Proposal......................................     Section 9.11(k)

Surviving Corporation..................................     Recitals

Tax....................................................     Section 9.11(l)

Tax Return.............................................     Section 9.11(m)

TBCA...................................................     Section 1.4

Termination Fee........................................     Section 8.2(b)

The other party........................................     Section 9.11(f)

Unaudited Financial Statements                              Section 4.1(d)

Violation..............................................     Section 4.1(h)(ii)

Welfare Benefit Plans..................................     Section 4.1(o)(i)

Welfare Plan Termination Date..........................     Section 6.5(c)

   64
                                     ANNEX A

                             CONDITIONS OF THE OFFER

Notwithstanding any other term of the Offer or this Agreement, Sub shall not be
required to accept for payment or, subject to any applicable rules and
regulations of the SEC, including Rule 14e-l(c) under the 1934 Act (relating to
Sub's obligation to pay for or return tendered Shares promptly after the
termination or withdrawal of the Offer), to pay for any Shares tendered pursuant
to the Offer unless (i) there shall have been validly tendered and not withdrawn
prior to the expiration of the Offer that number of Shares which would represent
at least two-thirds of the outstanding Shares (determined on a fully diluted
basis for all outstanding stock options and any other rights to acquire Shares,
whether or not then exercisable) (the "Minimum Tender Condition"), and (ii) all
approvals required for the consummation of the Offer and Merger from
Governmental Entities, including, without limitation, those required under the
BHC Act, shall have been obtained (and any applicable waiting periods with
respect thereto shall have expired) other than those the failure of which to be
obtained would not reasonably be expected to result in a Material Adverse Effect
on Parent and its Subsidiaries, taken together, and such approvals shall not
have imposed any condition or requirement which in the reasonable judgment of
Parent would adversely impact in a material respect the intended economic
benefits to Parent of the transactions contemplated by this Agreement.
Furthermore, notwithstanding any other term of the Offer or this Agreement, Sub
shall not be required to accept for payment or, subject as aforesaid, to pay for
any Shares not theretofore accepted for payment or paid for, and, subject to
Section 1.1 of this Agreement, may terminate or amend the Offer, with the
consent of the Company or if, as of the scheduled expiration date of the Offer
(as extended pursuant to Section 1.1(a)) and before the acceptance of such
Shares for payment or the payment therefor, any of the following conditions
exists:

(a) any federal, state, local or foreign law, statute, regulation, code,
ordinance or decree shall have been adopted, promulgated or otherwise in effect,
or any judgment, decree, temporary restraining order, preliminary or permanent
injunction or other order issued by a court or other Governmental Entity of
competent jurisdiction shall be in effect, having the effect of making the Offer
or the Merger illegal or otherwise prohibiting consummation of the Offer or the
Merger;

(b) there shall be pending any suit, action or proceeding by any Governmental
Entity (i) challenging the acquisition by Parent or Sub of any Shares, seeking
to restrain or prohibit consummation of the Offer or the Merger, or seeking to
place limitations on the ownership of Shares (or shares of common stock of the
Surviving Corporation) by Parent or Sub, (ii) seeking to prohibit or limit the
ownership or operation by the Company or Parent and their respective
subsidiaries of any material portion of the business or assets of the Company or
Parent and their respective subsidiaries taken as a whole, or to compel the
Company or Parent and their respective subsidiaries to dispose of or hold
separate any material portion of the business or assets of the Company or Parent
and their respective subsidiaries taken as a whole, as a result of the Offer,
the Merger or any of the other transactions contemplated by this Agreement, or
(iii) seeking to prohibit Parent or any of its subsidiaries from effectively
controlling in any material respect the business or operations of the Company or
Parent and their respective subsidiaries taken as a whole;
   65
(c) there shall have occurred after the date hereof any Material Adverse Effect
on the Company;

(d) there shall have occurred and continue to exist (i) any general suspension
of trading in, or limitation on prices for, securities on the New York Stock
Exchange for a period in excess of ten consecutive trading hours (excluding
suspensions or limitations resulting solely from physical damage or interference
with such exchange not related to market conditions), which materially and
adversely effects the extension of credit in the Company's marketplace, or (ii)
a declaration of a banking moratorium or any mandatory suspension of payments in
respect of banks in the United States which materially and adversely effects the
extension of credit in the Company's marketplace;

(e) any of the representations and warranties of the Company set forth in this
Agreement that is qualified as to materiality or as to a Company Material
Adverse Effect shall not be true and correct or any of the representations and
warranties of the Company set forth in this Agreement that is given without such
qualifications is not true and correct in any material respect, in each case at
the date of this Agreement and at the scheduled or extended expiration of the
Offer (except to the extent in either case that any such representation or
warranty speaks as of another date, in which case such representation and
warranty shall be true and correct as of such other date);

(f) the Company shall have failed to perform in any material respect any
obligation or to comply in any material respect with any agreement or covenant
required to be performed or complied with by it under this Agreement;

(g) the Board of Directors of the Company or any committee thereof shall have
publicly (including by amendment of its Schedule 14D-9) withdrawn or modified in
a manner adverse to Parent or Sub its approval or recommendation of the Offer,
the Merger or this Agreement, or approved or recommended any Acquisition
Proposal, (ii) the Company shall have entered into any agreement with respect to
any Superior Proposal in accordance with Section 6.4 of this Agreement, or (iii)
the Board of Directors of the Company or any committee thereof shall have
resolved to take any of the foregoing actions; or

(h) this Agreement shall have been terminated in accordance with its terms.

The foregoing conditions are for the sole benefit of Sub and Parent and may be
asserted by Sub or Parent regardless of the circumstances giving rise to such
condition or may be waived by Sub and Parent in whole or in part at any time and
from time to time in their sole discretion. The failure by Parent, Sub or any
other affiliate of Parent at any time to exercise any of the foregoing rights
shall not be deemed a waiver of any such right, the waiver of any such right
with respect to particular facts and circumstances shall not be deemed a waiver
with respect to any other facts and circumstances and each such right shall be
deemed an ongoing right that may be asserted at any time and from time to time.

The terms in this Annex A that are defined in the attached Agreement have the
meanings set forth therein.