Document:

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                                                                    EXHIBIT 10.9

                           CHANGE IN CONTROL AGREEMENT

         This CHANGE IN CONTROL AGREEMENT (Agreement), effective as of January
1, 2000 (the Effective Date), by and between Southwest Bancorporation of Texas,
Inc., a Texas corporation (the Company), and John Drew (the Employee);

                              W I T N E S S E T H:

         WHEREAS, the Employee is an officer of the Company or its wholly-owned
subsidiary, Southwest Bank of Texas National Association (the Bank) and has made
and/or is expected to make or continue to make major contributions to the
profitability, growth and financial strength of the Company and the Bank;

         WHEREAS, references herein to the Employee's employment by the Company
shall also mean his or her employment by the Bank, and references herein to
payments of any nature to be made by the Company to the Employee shall mean that
either the Company will make such payments or it will cause the Bank to make
such payments to the Employee;

         WHEREAS, the Company desires to assure itself of both present and
future continuity of management in the event of a Change in Control (as defined
hereafter) and desires to establish certain minimum compensation rights of its
key officers, including the Employee, applicable in the event of a Change in
Control;

         WHEREAS, the Company wishes to ensure that its key officers are not
practically disabled from discharging their duties upon a Change in Control;

         WHEREAS, this Agreement is not intended to alter materially the
compensation and benefits which the Employee could reasonably expect to receive
from the Company or the Bank absent a Change in Control and, accordingly,
although effective and binding as of the date hereof, this Agreement shall
become operative only upon the occurrence of a Change of Control; and

         WHEREAS, the Employee is willing to render services to the Company and
the Bank on the terms and subject to the conditions set forth in this Agreement;

         NOW, THEREFORE, the Company and the Employee agree as follows:

         1.       OPERATION OF AGREEMENT.

                  a)       This Agreement shall be effective and binding as of
         the Effective Date, but, anything in this Agreement to the contrary
         notwithstanding, this Agreement shall not be operative unless and until
         there shall have occurred a Change in Control.
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                  For purposes of this Agreement, a Change in Control shall have
         occurred if at any time during the Term (as that term is hereafter
         defined) any of the following events shall occur:

                           i)       The Company is merged, consolidated or
                  reorganized into or with or sells all or substantially all of
                  its assets to another corporation or other legal person, and
                  as a result of such merger, consolidation, reorganization or
                  sale (A) less than a majority of the combined voting power of
                  the then-outstanding securities of such corporation or person
                  immediately after such transaction are held in the aggregate
                  by the holders of Voting Stock (as that term is hereinafter
                  defined) of the Company immediately prior to such transaction
                  and (B) it is intended that persons serving as Directors of
                  the Company immediately prior to the transaction will
                  constitute none of or less than a majority of the Directors of
                  the other corporation or legal person after consummation of
                  the transaction; or

                           ii)      If during any one (1) year period,
                  individuals who at the beginning of any such period constitute
                  the Directors of the Company cease for any reason to
                  constitute at least a majority thereof, unless the election,
                  or the nomination for election by the Company's shareholders,
                  of each Director of the Company first elected during such
                  period was approved by a vote of at least two-thirds of the
                  Directors of the Company then still in office who were
                  Directors of the Company at the beginning of any such period.

                  b)       Upon occurrence of a Change in Control at any time
         during the Term, this Agreement shall become immediately operative.

                  c)       The period during which this Agreement shall be in
         effect (the Term) shall commence as of the date hereof and shall expire
         as of the later of (i) the close of business on December 31, 2002, and
         (ii) the expiration of the Period of Employment (as that term is
         hereinafter defined); provided, however, that (A) commencing on
         December 31, 2002, and the last day of each of the Company's Fiscal
         Years thereafter, the Term of this Agreement shall automatically be
         extended for an additional year unless, not later than the last day of
         the immediately preceding September, the Company or the Employee shall
         have given notice that it or he, as the case may be, does not wish to
         have the Term extended and (B) subject to Section 9 hereof, if, prior
         to a Change in Control, the Employee ceases for any reason to be an
         employee of the Company, thereupon the Term shall be deemed to have
         expired and this Agreement shall immediately terminate and be of no
         further effect.

         2.       EMPLOYMENT; PERIOD OF EMPLOYMENT.

                  a)       Subject to the terms and conditions of this
         Agreement, upon the occurrence of a Change in Control, the Company
         shall continue the Employee in its employ and the Employee shall remain
         in the employ of the Company for the period set forth in Section 2(b)
         hereof (the Period of Employment). Throughout the Period of Employment,
         the Employee shall devote substantially all of his time during normal
         business hours (subject to vacations, sick leave and other absences in
         accordance with the policies of the Company as in effect for

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         senior executives immediately prior to the Change in Control) to the
         business and affairs of the Company, but nothing in this Agreement
         shall preclude the Employee from devoting reasonable periods of time
         during normal business hours to (i) serving as a director, trustee or
         member of or participant in any organization or business so long as
         such organization or business is not engaged, directly or indirectly,
         in the business of commercial banking in competition with the business
         of the Company, (ii) engaging in charitable and community activities,
         or (iii) managing his personal investments.

                  b)       The Period of Employment shall commence on the date
         of an occurrence of a Change in Control and, subject only to the
         provisions of Section 4 hereof, shall continue until the earlier of (i)
         the expiration of the second anniversary of the occurrence of the
         Change in Control or (ii) the Employee's death.

         3.       COMPENSATION DURING PERIOD OF EMPLOYMENT.

                  a)       Upon the occurrence of a Change in Control, the
         Employee shall receive during the Period of Employment (i) annual base
         salary at a rate not less than the Employees annual fixed or base
         compensation payable monthly or otherwise as in effect for senior
         executives of the Company immediately prior to the occurrence of a
         Change in Control or such higher rate as may be determined from time to
         time by the Board of Directors of the Company (the Board) or the
         Compensation Committee thereof (the Committee) (which base salary at
         such rate is herein referred to as Base Pay) and (ii) an annual cash
         bonus in an amount determined for the Employee in accordance with the
         Company's incentive compensation plan or plans in effect at the time of
         the Change in Control or in accordance with any bonus, incentive,
         profit-sharing, performance, discretionary pay or similar policy, plan,
         program or arrangement of the Company or any successor thereto
         providing benefits at least as great as the benefits payable thereunder
         prior to the Change in Control (Incentive Pay); provided, however, that
         nothing herein shall preclude a change in the mix between Base Pay and
         Incentive Pay so long as the aggregate cash compensation received by
         the Employee in any one calendar year is not reduced in connection
         therewith or as a result thereof and, provided further, however, that
         in no event shall any increase in the Employee's aggregate cash
         compensation or any portion thereof in any way diminish any other
         obligation of the Company under this Agreement.

                  b)       For his service pursuant to Section 2(a) hereof,
         during the Period of Employment the Employee shall, if and on the same
         basis as he participated therein immediately prior to the Change in
         Control, be a full participant in, and shall be entitled to the
         perquisites, benefits and service credit for benefits as provided under
         any and all employee retirement income and welfare benefit policies,
         plans, programs or arrangements in which senior executives of the
         Company participate, including without limitation any stock option,
         stock purchase, stock appreciation, savings, pension, supplemental
         executive retirement or other retirement income or welfare benefit,
         deferred compensation, incentive compensation, group and/or executive
         life, accident, health, dental, medical/hospital or other insurance
         (whether funded by actual insurance or self-insured by the Company),
         disability, salary continuation, expense reimbursement and other
         employee benefit policies, plans, programs or arrangements that may now
         exist or any equivalent successor policies, plans,

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         programs or arrangements that may be adopted hereafter by the Company
         providing perquisites, benefits and service credit for benefits at
         least as great as are payable thereunder prior to a Change in
         Control(collectively, Employee Benefits); provided, however, that the
         Employee's rights thereunder shall be governed by the terms thereof and
         shall not be enlarged hereunder or otherwise affected hereby. Subject
         to the proviso in the immediately preceding sentence, if and to the
         extent such perquisites, benefits or service credit for benefits are
         not payable or provided under any such policy, plan, program or
         arrangement as a result of the amendment or termination thereof, then
         the Company shall itself pay or provide therefor. Nothing in this
         Agreement shall preclude improvement or enhancement of any such
         Employee Benefits, provided that no such improvement shall in any way
         diminish any other obligation of the Company under this Agreement.

                  c)       The Company has determined that the amounts payable
         pursuant to this Section 3 constitute reasonable compensation.
         Accordingly, notwithstanding any other provision hereof, unless such
         action would be expressly prohibited by applicable law, if any amount
         paid or payable pursuant to this Section 3 is subject to the excise tax
         imposed by Section 4999 of the Internal Revenue Code of 1986, as
         amended (the Code), the Company will pay to the Employee an additional
         amount in cash equal to the amount necessary to cause the aggregate
         remuneration received by the Employee under this Section 3, including
         such additional cash payment (net of all federal, state and local
         income taxes and all taxes payable as the result of the application of
         Sections 280G and 4999 of the Code) to be equal to the aggregate
         remuneration the Employee would have received under this Section 3,
         excluding such additional payment (net of all federal, state and local
         income taxes), as if Sections 280G and 4999 of the Code (and any
         successor provisions thereto) had not been enacted into law.

         4.       TERMINATION FOLLOWING A CHANGE IN CONTROL.

                  a)       In the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Company during the
         Period of Employment only upon the occurrence of one or more of the
         following events:

                           i)       If the Employee is unable to perform the
                  essential functions of his job (with or without reasonable
                  accommodation) because he has become permanently disabled
                  within the meaning of, and actually begins to receive
                  disability benefits pursuant to, the long-term disability plan
                  in effect for senior executives or, if applicable, employees
                  of the Company immediately prior to the Change in Control; or

                           ii)      For Cause, which for purposes of this
                  Agreement shall mean that, prior to any termination pursuant
                  to Section 4(b) hereof, the Employee shall have committed:

                                    A)       Gross negligence or willful
                           misconduct in connection with his duties or in the
                           course of his employment with the Company;

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                                    B)       an act of fraud, embezzlement or
                           theft in connection with his duties or in the course
                           of his employment with the Company;

                                    C)       intentional wrongful damage to
                           property of the Company;

                                    D)       intentional wrongful disclosure of
                           secret processes or confidential information of the
                           Company;

                                    E)       intentional wrongful engagement in
                           any Competitive Activity; or

                                    F)       an act leading to a conviction of a
                           felony or a misdemeanor involving moral turpitude.

                  For purposes of this Agreement, no act, or failure to act, on
         the part of the Employee shall be deemed intentional if it was due
         primarily to an error in judgment or negligence, but shall be deemed
         intentional only if done, or omitted to be done, by the Employee not in
         good faith and without reasonable belief that his action or omission
         was in the best interest of the Company. Notwithstanding the foregoing,
         the Employee shall not be deemed to have been terminated for Cause
         hereunder unless and until there shall have been delivered to the
         Employee a copy of a resolution duly adopted by the affirmative vote of
         not less than three-quarters of the Board then in office at a meeting
         of the Board called and held for such purpose (after reasonable notice
         to the Employee and an opportunity for the Employee, together with his
         counsel, to be heard before the Board), finding that, in the good faith
         opinion of the Board, the Employee had committed an act set forth above
         in this Section 4(a)(ii) and specifying the particulars thereof in
         detail. Nothing herein shall limit the right of the Employee or his
         beneficiaries to contest the validity or propriety of any such
         determination.

                  b)       in the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Employee during the
         Period of Employment with the right to benefits as provided in Section
         5 hereof upon the occurrence of one or more of the following events:

                           i)       Any termination by the Company of the
                  employment of the Employee for any reason other than for Cause
                  or as a result of the death of the Employee or by reason of
                  the Employee's disability and the actual receipt of disability
                  benefits in accordance with Section 4(a)(i) hereof; or

                           ii)      Termination by the Employee of his
                  employment with the Company upon the occurrence of any of the
                  following events:

                                    A)       A reduction in the aggregate of the
                           Employee's Base Pay and Incentive Pay received from
                           the Company, or the termination of the Employee's
                           rights to any Employee Benefits to which he was
                           entitled immediately prior to the Change in Control
                           or a reduction in scope or value thereof without the
                           prior written consent of the Employee, any of which
                           is not

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                           remedied within 10 calendar days after receipt by the
                           Company of written notice from the Employee of such
                           change, reduction or termination, as the case may be;

                                    B)       The liquidation, dissolution,
                           merger, consolidation or reorganization of the
                           Company or transfer of all or a significant portion
                           of its business and/or assets, unless the successor
                           or successors (by liquidation, merger, consolidation,
                           reorganization or otherwise) to which all or a
                           significant portion of its business and/or assets
                           have been transferred (directly or by operation of
                           law) shall have assumed all duties and obligations of
                           the Company under this Agreement pursuant to Section
                           11 hereof;

                                    C)       The Company requires the Employee
                           to have his principal location of work changed to any
                           location which is in excess of 50 miles from the
                           location thereof immediately prior to the Change of
                           Control or to travel away from his office in the
                           course of discharging his responsibilities or duties
                           hereunder significantly more (in terms of either
                           consecutive days or aggregate days in any calendar
                           year) than was required of him prior to the Change of
                           Control without, in either case, his prior consent;
                           or

                                    D)       Any material breach of this
                           Agreement by the Company or any successor thereto.

                  c)       A termination by the Company pursuant to Section 4(a)
         hereof or by the Employee pursuant to Section 4(b) hereof shall not
         affect any rights which the Employee may have pursuant to any
         agreement, policy, plan, program or arrangement of the Company
         providing Employee Benefits, which rights shall be governed by the
         terms thereof. If this Agreement or the employment of the Employee is
         terminated under circumstances in which the Employee is not entitled to
         any payments under Sections 3 or 5 hereof, the Employee shall have no
         further obligation or liability to the Company hereunder with respect
         to his prior or any future employment by the Company.

         5.       SEVERANCE COMPENSATION.

                  a)       If, following the occurrence of a Change in Control,
         the Company shall terminate the Employee's employment during the Period
         of Employment other than pursuant to Section 4(a) hereof, or if the
         Employee shall terminate his employment pursuant to Section 4(b)
         hereof, the Company shall pay to the Employee the amount specified in
         Section 5(a)(i) hereof within ten business days after the date (the
         Termination Date) that the Employee's employment is terminated (the
         effective date of which shall be the date of termination, or such other
         date that may be specified by the Employee if the termination is
         pursuant to Section 4(b) hereof):

                           i)       In lieu of any further payments to the
                  Employee for periods subsequent to the Termination Date, but
                  without affecting the rights of the Employee referred to in
                  Section 5(b) hereof, a lump sum payment (the Severance
                  Payment) in

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                  an amount equal to the present value (using a discount rate
                  required to be utilized for purposes of computations under
                  Section 280G of the Code or any successor provision thereto,
                  or if no such rate is so required to be used, a rate equal to
                  the then-applicable interest rate prescribed by the Pension
                  Benefit Guarantee Corporation for benefit valuations in
                  connection with non-multiemployer pension plan terminations
                  assuming the immediate commencement of benefit payments (the
                  Discount Rate) of the sum of (A) the Base Pay (at the highest
                  rate in effect during the Term prior to the Termination Date)
                  for one year, plus (B) the Incentive Pay for one year (based
                  upon the greatest amount of Incentive Pay paid or payable to
                  the Employee for any year during the three calendar years
                  preceding the year in which the Termination Date occurs);
                  provided, however, that in no event will the present value (as
                  determined under Section 280G of the Code or any successor
                  provision thereto) of the amount otherwise payable hereunder,
                  when added to the present value (as determined under Section
                  280G of the Code or any successor provision thereto) of any
                  other parachute payments (as that term is defined in Section
                  280G of the Code (without regard to Section 280G(b)(2)(A)(ii)
                  thereof) or any successor provision thereto) from the Company,
                  exceed an amount (the A299% Amount) equal to 299% of the
                  Employee's base amount (as that term is defined in Section
                  280G of the Code or any successor provision thereto) and if
                  the amount otherwise payable hereunder would exceed the 299%
                  Amount, the Severance Payment shall be reduced to the extent
                  necessary so that the aggregate present value determined in
                  the previous clause does not exceed the 299% Amount.

                           ii)      The determination of whether any amount
                  otherwise payable under Section 5(a)(i) causes the 299% Amount
                  to be exceeded shall be made, if requested by the Employee or
                  the Company, by tax counsel selected by the Company and
                  reasonably acceptable to the Employee. The costs of obtaining
                  such determination shall be borne by the Company. The fact
                  that the Employee shall have his right to the Severance
                  Payment reduced as a result of the existence of the
                  limitations contained in this Section 5(a) shall not limit or
                  otherwise affect any rights of the Employee to any Employee
                  Benefit, or other right arising other than pursuant to this
                  Agreement. Without limiting the generality of the foregoing,
                  upon the Employee's termination of employment as provided in
                  this Section 5, the Company shall pay over to him all vested
                  benefits to which he is entitled under and in accordance with
                  the terms of the Company's employee savings, stock ownership,
                  supplemental executive retirement and similar Plans in the
                  event such payments are not otherwise made in accordance with
                  the terms of such plans.

                           iii)     Except to the extent that the payments or
                  benefits pursuant to this Section 5(a)(iii) would result in a
                  reduction of the amount of the Severance Payment because they
                  would exceed the 299% Amount, (A) for the remainder of the
                  Period of Employment the Company shall arrange to provide the
                  Employee with Employee Benefits substantially similar to those
                  which the Employee was receiving or entitled to receive
                  immediately prior to the Termination Date (and if and to the
                  extent that such benefits shall not or cannot be paid or
                  provided under any policy, plan, program or arrangement of the
                  Company solely due to the fact that the Employee is no longer

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                  an officer or employee of the Company, then the Company shall
                  itself pay or provide for the payment to the Employee, his
                  dependents and beneficiaries, such Employee Benefits) and (B)
                  without limiting the generality of the foregoing, the
                  remainder of the Period of Employment shall be considered
                  service with the Company for the purpose of service credits
                  under the Company's retirement income, supplemental executive
                  retirement and other benefit plans of the Company applicable
                  to the Employee or his beneficiaries immediately prior to the
                  Termination Date. Without otherwise limiting the purposes or
                  effect of Section 6 hereof, Employee Benefits payable to the
                  Employee pursuant to this Section 5(a)(iii) by reason of any
                  welfare benefit plan of the Company (as the term welfare
                  benefit plan is defined in Section 3(1) of the Employee
                  Retirement Income Security Act of 1974, as amended) shall be
                  reduced to the extent comparable welfare benefits are actually
                  received by the Employee from another employer during such
                  period following the Employee's Termination Date until the
                  expiration of the Period of Employment.

                           iv)      Notwithstanding any provision of the Section
                  5(a) to the contrary, in the event the benefits intended to be
                  provided to the Employee pursuant to Section 5(a)(iii) hereof
                  are required to be reduced in whole or in part because the
                  value of such Employee Benefits, when added to the amount of
                  the Severance Payment under Section 5(a)(i), would exceed 299%
                  Amount, the Employee shall have the option to elect to
                  receive, in lieu of all or a portion of the Severance Payment
                  provided in Section 5(a)(i) hereof, one or more Employee
                  Benefits, provided that (A) prior to the receipt of any
                  payment under Section 5(a)(i) hereof, the Employee notifies
                  the Company of the Employee Benefit or Employee Benefits so
                  elected to be received, and (B) in no event shall the
                  aggregate present value of the payments in the nature of
                  compensation (as that phrase is used in Section 280G of the
                  Code) received by the Employee as a result of the receipt of
                  such Employee Benefits, when added to the remaining portion of
                  the Severance Payment, if any, to be received by the Employee,
                  exceed the 299% Amount.

                           v)       In addition to all other compensation due to
                  the Employee, the following shall occur immediately following
                  the occurrence of a Change in Control:

                                    A)       all Company stock options held by
                           the Employee prior to a Change in Control shall
                           become fully exercisable, regardless of whether or
                           not the vesting conditions set forth in the relevant
                           stock option agreements have been satisfied in full;
                           and

                                    B)       all restrictions on any restricted
                           Company stock granted to the Employee prior to a
                           Change in Control shall be removed and the stock
                           shall be freely transferable, regardless of whether
                           the conditions set forth in the relevant restricted
                           stock agreements have been satisfied in full.

         b)       Upon written notice given by the Employee to the Company prior
to the receipt of any payment pursuant to Section 5(a) hereof, the Employee, at
his sole option, without reduction to reflect the present value of such amounts
as aforesaid, may elect to have all or any of the Severance

<PAGE>

Payment payable pursuant to Section 5(a)(i) hereof paid to him on a quarterly or
monthly basis during the remainder of the Period of Employment.

         c)       There shall be no right of set-off or counterclaim in respect
of any claim, debt or obligation against any payment to or benefit for the
Employee provided for in this Agreement.

         d)       Without limiting the rights of the Employee at law or in
equity, if the Company fails to make any payment required to be made hereunder
on a timely basis, the Company shall pay interest on the amount thereof at an
annualized rate of interest equal to the then-applicable Discount Rate or, if
lesser, the highest rate allowed by applicable usury laws.

         6.       NO MITIGATION OBLIGATION. The Company hereby acknowledges that
it will be difficult, and may be impossible, for the Employee to find reasonably
comparable employment following the Termination Date. Accordingly, the parties
hereto expressly agree that the payment of the severance compensation by the
Company to the Employee in accordance with the terms of this Agreement will be
liquidated damages, and that the Employee shall not be required to mitigate the
amount of any payment provided for in this Agreement by seeking other employment
or otherwise, nor shall any profits, income, earnings or other benefits from any
source whatsoever create any mitigation, offset, reduction or any other
obligation on the part of the Employee hereunder or otherwise, except as
expressly provided in Section 5(a)(iii) hereof.

         7.       [Reserved]

         8.       LEGAL FEES AND EXPENSES. In the event of a breach of this
Agreement by the Company, it is the intent of the Company that the Employee not
be required to incur the expenses associated with the enforcement of his rights
under this Agreement by litigation or other legal action because the cost and
expense thereof would substantially detract from the benefits intended to be
extended to the Employee hereunder. Accordingly, if the Company fails to comply
with any of its obligations under this Agreement or in the event that the
Company or any other person takes any action to declare this Agreement void or
unenforceable, or institutes any litigation designed to deny, or to recover
from, the Employee the benefits intended to be provided to the Employee
hereunder, the Company irrevocably authorizes the Employee from time to time to
retain counsel of his choice, at the expense of the Company as hereafter
provided, to represent the Employee in connection with the initiation or defense
of any litigation or other legal action, whether by or against the Company or
any Director, officer, shareholder or other person affiliated with the Company,
in any jurisdiction. Notwithstanding any existing or prior attorney-client
relationship between the Company and such counsel, the Company irrevocably
consents to the Employee's entering into an attorney-client relationship with
such counsel (other than Vinson & Elkins L.L.P.), and in that connection the
Company and the Employee agree that a confidential relationship shall exist
between the Employee and such counsel. The Company shall pay or cause to be paid
and shall be solely responsible for any and all attorneys and related fees and
expenses incurred by the Employee as a result of the Company's failure to
perform this Agreement or any provision thereof or as a result of the Company or
any person contesting the validity or enforceability of this Agreement or any
provision thereof as

<PAGE>

aforesaid. If the Company should prevail in any litigation regarding this
Agreement, however, the Company shall not be responsible for any attorneys and
related fees and expenses incurred by Employee in connection with such
litigation.

         9.       EMPLOYMENT RIGHTS. Nothing expressed or implied in this
Agreement shall create any right or duty on the part of the Company or the
Employee to have the Employee remain in the employment of the Company prior to
any Change in Control; provided, however, that any termination of employment of
the Employee or removal of the Employee as an Officer of the Company following
the commencement of any discussion with a third person that ultimately results
in a Change in Control shall be deemed to be a termination or removal of the
Employee after a Change in Control for purposes of this Agreement.

         10.      WITHHOLDING OF TAXES. The Company may withhold from any
amounts payable under this Agreement all federal, state, city or other taxes as
shall be required pursuant to any law or government regulation or ruling.

         11.      SUCCESSORS AND BINDING AGREEMENT.

                  a)       The Company shall require any successor (whether
         direct or indirect, by purchase, merger, consolidation, reorganization
         or otherwise) to all or substantially all of the business and/or assets
         of the Company to execute an agreement pursuant to which the successor
         expressly assumes all of the liabilities and obligations of the Company
         hereunder and agrees to perform this Agreement in the same manner and
         to the same extent the Company would be required to perform if no such
         succession had taken place. This Agreement shall be binding upon and
         inure to the benefit of the Company and any successor to the Company,
         including without limitation any persons acquiring directly or
         indirectly all or substantially all of the business and/or assets of
         the Company whether by purchase, merger, consolidation, reorganization
         or otherwise (and such successor shall thereafter be deemed the Company
         for the purposes of this Agreement), but shall not otherwise be
         assignable, transferable or delegable by the Company.

                  b)       This Agreement shall inure to the benefit of and be
         enforceable by the Employee's personal or legal representatives,
         executors, administrators, successors, heirs, distributees and/or
         legatees.

                  c)       This Agreement is personal in nature and neither of
         the parties hereto shall, without the consent of the other, assign,
         transfer or delegate this Agreement or any rights or obligations
         hereunder except as expressly provided in Section 11(a) hereof. Without
         limiting the generality of the foregoing, the Employee's right to
         receive payments hereunder shall not be assignable, transferable or
         delegable, whether by pledge, creation of a security interest or
         otherwise, other than by a transfer by the Employee's will or by the
         laws of descent and distribution and, in the event of any attempted
         assignment or transfer contrary to this Section 11(c), the Company
         shall have no liability to pay any amount so attempted to be assigned,
         transferred or delegated.

<PAGE>

                  d)       The Company and the Employee recognize that each
         Party will have no adequate remedy at law for breach by the other of
         any of the agreements contained herein and, in the event of any such
         breach, the Company and the Employee hereby agree and consent that the
         other shall be entitled to a decree of specific performance, mandamus
         or other appropriate remedy to enforce performance of this Agreement.

         12.      NOTICE. For all purposes of this Agreement, all communications
provided for herein shall be in writing and shall be deemed to have been duly
given when delivered or three business days after having been mailed by United
States registered or certified mail, return receipt requested, postage prepaid,
addressed to the Company (to the attention of the Secretary of the Company) at
its principal executive office and to the Employee at his principal residence,
or to such other address as any party may have furnished to the other in writing
and in accordance herewith, except that notices of change of address shall be
effective only upon receipt.

         13.      GOVERNING LAW. The validity, interpretation, construction and
performance of this Agreement shall be governed by the laws of the State of
Texas, without giving effect to the principles of conflict of laws of such
State.

         14.      VALIDITY. If any provision of this Agreement or the
application of any provision hereof to any person or circumstances is held
invalid, unenforceable or otherwise illegal, the remainder of this Agreement and
the application of such provision to any other person or circumstances shall not
be affected, and the provision so held to be invalid, unenforceable or otherwise
illegal shall be reformed to the extent (and only to the extent) necessary to
make it enforceable, valid and legal.

         15.      MISCELLANEOUS. No provisions of this Agreement may be
modified, waived or discharged unless such waiver, modification or discharge is
agreed to in writing signed by the Employee and the Company. No waiver by either
party hereto at any time of any breach by the other party hereto or compliance
with any condition or provision of this Agreement to be performed by such other
party shall be deemed a waiver of similar or dissimilar provisions or conditions
at the same or at any prior or subsequent time. No agreements or
representations, oral or otherwise, expressed or implied with respect to the
subject matter hereof have been made by either party which are not set forth
expressly in this Agreement.

         16.      PRIOR AGREEMENTS. This Agreement is voluntarily entered into
and supersedes and takes the place of any prior change in control, severance or
employment agreements between the parties hereto. The parties hereto expressly
agree and hereby declare that any and all prior change in control, severance or
employment agreements between the parties are terminated and of no force or
effect.

         17.      COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original but all of which
together will constitute one and the same agreement.

<PAGE>

         IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
executed and delivered as of the date first above written.

                                         SOUTHWEST BANCORPORATION OF TEXAS, INC.

                                         By:  /s/  Paul B. Murphy
                                         ---------------------------------------

                                         EMPLOYEE:

                                         /s/ John Drew
                                         ---------------------------------------
<PAGE>

                           CHANGE IN CONTROL AGREEMENT

         This CHANGE IN CONTROL AGREEMENT (Agreement), effective as of January
1, 2000 (the Effective Date), by and between Southwest Bancorporation of Texas,
Inc., a Texas corporation (the Company), and Debra Innes (the Employee);

                              W I T N E S S E T H:

         WHEREAS, the Employee is an officer of the Company or its wholly-owned
subsidiary, Southwest Bank of Texas National Association (the Bank) and has made
and/or is expected to make or continue to make major contributions to the
profitability, growth and financial strength of the Company and the Bank;

         WHEREAS, references herein to the Employee's employment by the Company
shall also mean his or her employment by the Bank, and references herein to
payments of any nature to be made by the Company to the Employee shall mean that
either the Company will make such payments or it will cause the Bank to make
such payments to the Employee;

         WHEREAS, the Company desires to assure itself of both present and
future continuity of management in the event of a Change in Control (as defined
hereafter) and desires to establish certain minimum compensation rights of its
key officers, including the Employee, applicable in the event of a Change in
Control;

         WHEREAS, the Company wishes to ensure that its key officers are not
practically disabled from discharging their duties upon a Change in Control;

         WHEREAS, this Agreement is not intended to alter materially the
compensation and benefits which the Employee could reasonably expect to receive
from the Company or the Bank absent a Change in Control and, accordingly,
although effective and binding as of the date hereof, this Agreement shall
become operative only upon the occurrence of a Change of Control; and

         WHEREAS, the Employee is willing to render services to the Company and
the Bank on the terms and subject to the conditions set forth in this Agreement;

         NOW, THEREFORE, the Company and the Employee agree as follows:

         1.       OPERATION OF AGREEMENT.

                  a)       This Agreement shall be effective and binding as of
         the Effective Date, but, anything in this Agreement to the contrary
         notwithstanding, this Agreement shall not be operative unless and until
         there shall have occurred a Change in Control.
<PAGE>

                  For purposes of this Agreement, a Change in Control shall have
         occurred if at any time during the Term (as that term is hereafter
         defined) any of the following events shall occur:

                           i)       The Company is merged, consolidated or
                  reorganized into or with or sells all or substantially all of
                  its assets to another corporation or other legal person, and
                  as a result of such merger, consolidation, reorganization or
                  sale (A) less than a majority of the combined voting power of
                  the then-outstanding securities of such corporation or person
                  immediately after such transaction are held in the aggregate
                  by the holders of Voting Stock (as that term is hereinafter
                  defined) of the Company immediately prior to such transaction
                  and (B) it is intended that persons serving as Directors of
                  the Company immediately prior to the transaction will
                  constitute none of or less than a majority of the Directors of
                  the other corporation or legal person after consummation of
                  the transaction; or

                           ii)      If during any one (1) year period,
                  individuals who at the beginning of any such period constitute
                  the Directors of the Company cease for any reason to
                  constitute at least a majority thereof, unless the election,
                  or the nomination for election by the Company's shareholders,
                  of each Director of the Company first elected during such
                  period was approved by a vote of at least two-thirds of the
                  Directors of the Company then still in office who were
                  Directors of the Company at the beginning of any such period.

                  b)       Upon occurrence of a Change in Control at any time
         during the Term, this Agreement shall become immediately operative.

                  c)       The period during which this Agreement shall be in
         effect (the Term) shall commence as of the date hereof and shall expire
         as of the later of (i) the close of business on December 31, 2002, and
         (ii) the expiration of the Period of Employment (as that term is
         hereinafter defined); provided, however, that (A) commencing on
         December 31, 2002, and the last day of each of the Company's Fiscal
         Years thereafter, the Term of this Agreement shall automatically be
         extended for an additional year unless, not later than the last day of
         the immediately preceding September, the Company or the Employee shall
         have given notice that it or he, as the case may be, does not wish to
         have the Term extended and (B) subject to Section 9 hereof, if, prior
         to a Change in Control, the Employee ceases for any reason to be an
         employee of the Company, thereupon the Term shall be deemed to have
         expired and this Agreement shall immediately terminate and be of no
         further effect.

         2.       EMPLOYMENT; PERIOD OF EMPLOYMENT.

                  a)       Subject to the terms and conditions of this
         Agreement, upon the occurrence of a Change in Control, the Company
         shall continue the Employee in its employ and the Employee shall remain
         in the employ of the Company for the period set forth in Section 2(b)
         hereof (the Period of Employment). Throughout the Period of Employment,
         the Employee shall devote substantially all of his time during normal
         business hours (subject to vacations, sick leave and other absences in
         accordance with the policies of the Company as in effect for

<PAGE>

         senior executives immediately prior to the Change in Control) to the
         business and affairs of the Company, but nothing in this Agreement
         shall preclude the Employee from devoting reasonable periods of time
         during normal business hours to (i) serving as a director, trustee or
         member of or participant in any organization or business so long as
         such organization or business is not engaged, directly or indirectly,
         in the business of commercial banking in competition with the business
         of the Company, (ii) engaging in charitable and community activities,
         or (iii) managing his personal investments.

                  b)       The Period of Employment shall commence on the date
         of an occurrence of a Change in Control and, subject only to the
         provisions of Section 4 hereof, shall continue until the earlier of (i)
         the expiration of the second anniversary of the occurrence of the
         Change in Control or (ii) the Employee's death.

         3.       COMPENSATION DURING PERIOD OF EMPLOYMENT.

                  a)       Upon the occurrence of a Change in Control, the
         Employee shall receive during the Period of Employment (i) annual base
         salary at a rate not less than the Employees annual fixed or base
         compensation payable monthly or otherwise as in effect for senior
         executives of the Company immediately prior to the occurrence of a
         Change in Control or such higher rate as may be determined from time to
         time by the Board of Directors of the Company (the Board) or the
         Compensation Committee thereof (the Committee) (which base salary at
         such rate is herein referred to as Base Pay) and (ii) an annual cash
         bonus in an amount determined for the Employee in accordance with the
         Company's incentive compensation plan or plans in effect at the time of
         the Change in Control or in accordance with any bonus, incentive,
         profit-sharing, performance, discretionary pay or similar policy, plan,
         program or arrangement of the Company or any successor thereto
         providing benefits at least as great as the benefits payable thereunder
         prior to the Change in Control (Incentive Pay); provided, however, that
         nothing herein shall preclude a change in the mix between Base Pay and
         Incentive Pay so long as the aggregate cash compensation received by
         the Employee in any one calendar year is not reduced in connection
         therewith or as a result thereof and, provided further, however, that
         in no event shall any increase in the Employee's aggregate cash
         compensation or any portion thereof in any way diminish any other
         obligation of the Company under this Agreement.

                  b)       For his service pursuant to Section 2(a) hereof,
         during the Period of Employment the Employee shall, if and on the same
         basis as he participated therein immediately prior to the Change in
         Control, be a full participant in, and shall be entitled to the
         perquisites, benefits and service credit for benefits as provided under
         any and all employee retirement income and welfare benefit policies,
         plans, programs or arrangements in which senior executives of the
         Company participate, including without limitation any stock option,
         stock purchase, stock appreciation, savings, pension, supplemental
         executive retirement or other retirement income or welfare benefit,
         deferred compensation, incentive compensation, group and/or executive
         life, accident, health, dental, medical/hospital or other insurance
         (whether funded by actual insurance or self-insured by the Company),
         disability, salary continuation, expense reimbursement and other
         employee benefit policies, plans, programs or arrangements that may now
         exist or any equivalent successor policies, plans,

<PAGE>

         programs or arrangements that may be adopted hereafter by the Company
         providing perquisites, benefits and service credit for benefits at
         least as great as are payable thereunder prior to a Change in
         Control(collectively, Employee Benefits); provided, however, that the
         Employee's rights thereunder shall be governed by the terms thereof and
         shall not be enlarged hereunder or otherwise affected hereby. Subject
         to the proviso in the immediately preceding sentence, if and to the
         extent such perquisites, benefits or service credit for benefits are
         not payable or provided under any such policy, plan, program or
         arrangement as a result of the amendment or termination thereof, then
         the Company shall itself pay or provide therefor. Nothing in this
         Agreement shall preclude improvement or enhancement of any such
         Employee Benefits, provided that no such improvement shall in any way
         diminish any other obligation of the Company under this Agreement.

                  c)       The Company has determined that the amounts payable
         pursuant to this Section 3 constitute reasonable compensation.
         Accordingly, notwithstanding any other provision hereof, unless such
         action would be expressly prohibited by applicable law, if any amount
         paid or payable pursuant to this Section 3 is subject to the excise tax
         imposed by Section 4999 of the Internal Revenue Code of 1986, as
         amended (the Code), the Company will pay to the Employee an additional
         amount in cash equal to the amount necessary to cause the aggregate
         remuneration received by the Employee under this Section 3, including
         such additional cash payment (net of all federal, state and local
         income taxes and all taxes payable as the result of the application of
         Sections 280G and 4999 of the Code) to be equal to the aggregate
         remuneration the Employee would have received under this Section 3,
         excluding such additional payment (net of all federal, state and local
         income taxes), as if Sections 280G and 4999 of the Code (and any
         successor provisions thereto) had not been enacted into law.

         4.       TERMINATION FOLLOWING A CHANGE IN CONTROL.

                  a)       In the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Company during the
         Period of Employment only upon the occurrence of one or more of the
         following events:

                           i)       If the Employee is unable to perform the
                  essential functions of his job (with or without reasonable
                  accommodation) because he has become permanently disabled
                  within the meaning of, and actually begins to receive
                  disability benefits pursuant to, the long-term disability plan
                  in effect for senior executives or, if applicable, employees
                  of the Company immediately prior to the Change in Control; or

                           ii)      For Cause, which for purposes of this
                  Agreement shall mean that, prior to any termination pursuant
                  to Section 4(b) hereof, the Employee shall have committed:

                                    A)       Gross negligence or willful
                           misconduct in connection with his duties or in the
                           course of his employment with the Company;

<PAGE>

                                    B)       an act of fraud, embezzlement or
                           theft in connection with his duties or in the course
                           of his employment with the Company;

                                    C)       intentional wrongful damage to
                           property of the Company;

                                    D)       intentional wrongful disclosure of
                           secret processes or confidential information of the
                           Company;

                                    E)       intentional wrongful engagement in
                           any Competitive Activity; or

                                    F)       an act leading to a conviction of a
                           felony or a misdemeanor involving moral turpitude.

                  For purposes of this Agreement, no act, or failure to act, on
         the part of the Employee shall be deemed intentional if it was due
         primarily to an error in judgment or negligence, but shall be deemed
         intentional only if done, or omitted to be done, by the Employee not in
         good faith and without reasonable belief that his action or omission
         was in the best interest of the Company. Notwithstanding the foregoing,
         the Employee shall not be deemed to have been terminated for Cause
         hereunder unless and until there shall have been delivered to the
         Employee a copy of a resolution duly adopted by the affirmative vote of
         not less than three-quarters of the Board then in office at a meeting
         of the Board called and held for such purpose (after reasonable notice
         to the Employee and an opportunity for the Employee, together with his
         counsel, to be heard before the Board), finding that, in the good faith
         opinion of the Board, the Employee had committed an act set forth above
         in this Section 4(a)(ii) and specifying the particulars thereof in
         detail. Nothing herein shall limit the right of the Employee or his
         beneficiaries to contest the validity or propriety of any such
         determination.

                  b)       in the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Employee during the
         Period of Employment with the right to benefits as provided in Section
         5 hereof upon the occurrence of one or more of the following events:

                           i)       Any termination by the Company of the
                  employment of the Employee for any reason other than for Cause
                  or as a result of the death of the Employee or by reason of
                  the Employee's disability and the actual receipt of disability
                  benefits in accordance with Section 4(a)(i) hereof; or

                           ii)      Termination by the Employee of his
                  employment with the Company upon the occurrence of any of the
                  following events:

                                    A)       A reduction in the aggregate of the
                           Employee's Base Pay and Incentive Pay received from
                           the Company, or the termination of the Employee's
                           rights to any Employee Benefits to which he was
                           entitled immediately prior to the Change in Control
                           or a reduction in scope or value thereof without the
                           prior written consent of the Employee, any of which
                           is not

<PAGE>

                           remedied within 10 calendar days after receipt by the
                           Company of written notice from the Employee of such
                           change, reduction or termination, as the case may be;

                                    B)       The liquidation, dissolution,
                           merger, consolidation or reorganization of the
                           Company or transfer of all or a significant portion
                           of its business and/or assets, unless the successor
                           or successors (by liquidation, merger, consolidation,
                           reorganization or otherwise) to which all or a
                           significant portion of its business and/or assets
                           have been transferred (directly or by operation of
                           law) shall have assumed all duties and obligations of
                           the Company under this Agreement pursuant to Section
                           11 hereof;

                                    C)       The Company requires the Employee
                           to have his principal location of work changed to any
                           location which is in excess of 50 miles from the
                           location thereof immediately prior to the Change of
                           Control or to travel away from his office in the
                           course of discharging his responsibilities or duties
                           hereunder significantly more (in terms of either
                           consecutive days or aggregate days in any calendar
                           year) than was required of him prior to the Change of
                           Control without, in either case, his prior consent;
                           or

                                    D)       Any material breach of this
                           Agreement by the Company or any successor thereto.

                  c)       A termination by the Company pursuant to Section 4(a)
         hereof or by the Employee pursuant to Section 4(b) hereof shall not
         affect any rights which the Employee may have pursuant to any
         agreement, policy, plan, program or arrangement of the Company
         providing Employee Benefits, which rights shall be governed by the
         terms thereof. If this Agreement or the employment of the Employee is
         terminated under circumstances in which the Employee is not entitled to
         any payments under Sections 3 or 5 hereof, the Employee shall have no
         further obligation or liability to the Company hereunder with respect
         to his prior or any future employment by the Company.

         5.       SEVERANCE COMPENSATION.

                  a)       If, following the occurrence of a Change in Control,
         the Company shall terminate the Employee's employment during the Period
         of Employment other than pursuant to Section 4(a) hereof, or if the
         Employee shall terminate his employment pursuant to Section 4(b)
         hereof, the Company shall pay to the Employee the amount specified in
         Section 5(a)(i) hereof within ten business days after the date (the
         Termination Date) that the Employee's employment is terminated (the
         effective date of which shall be the date of termination, or such other
         date that may be specified by the Employee if the termination is
         pursuant to Section 4(b) hereof):

                           i)       In lieu of any further payments to the
                  Employee for periods subsequent to the Termination Date, but
                  without affecting the rights of the Employee referred to in
                  Section 5(b) hereof, a lump sum payment (the Severance
                  Payment) in

<PAGE>

                  an amount equal to the present value (using a discount rate
                  required to be utilized for purposes of computations under
                  Section 280G of the Code or any successor provision thereto,
                  or if no such rate is so required to be used, a rate equal to
                  the then-applicable interest rate prescribed by the Pension
                  Benefit Guarantee Corporation for benefit valuations in
                  connection with non-multiemployer pension plan terminations
                  assuming the immediate commencement of benefit payments (the
                  Discount Rate) of the sum of (A) the Base Pay (at the highest
                  rate in effect during the Term prior to the Termination Date)
                  for one year, plus (B) the Incentive Pay for one year (based
                  upon the greatest amount of Incentive Pay paid or payable to
                  the Employee for any year during the three calendar years
                  preceding the year in which the Termination Date occurs);
                  provided, however, that in no event will the present value (as
                  determined under Section 280G of the Code or any successor
                  provision thereto) of the amount otherwise payable hereunder,
                  when added to the present value (as determined under Section
                  280G of the Code or any successor provision thereto) of any
                  other parachute payments (as that term is defined in Section
                  280G of the Code (without regard to Section 280G(b)(2)(A)(ii)
                  thereof) or any successor provision thereto) from the Company,
                  exceed an amount (the A299% Amount) equal to 299% of the
                  Employee's base amount (as that term is defined in Section
                  280G of the Code or any successor provision thereto) and if
                  the amount otherwise payable hereunder would exceed the 299%
                  Amount, the Severance Payment shall be reduced to the extent
                  necessary so that the aggregate present value determined in
                  the previous clause does not exceed the 299% Amount.

                           ii)      The determination of whether any amount
                  otherwise payable under Section 5(a)(i) causes the 299% Amount
                  to be exceeded shall be made, if requested by the Employee or
                  the Company, by tax counsel selected by the Company and
                  reasonably acceptable to the Employee. The costs of obtaining
                  such determination shall be borne by the Company. The fact
                  that the Employee shall have his right to the Severance
                  Payment reduced as a result of the existence of the
                  limitations contained in this Section 5(a) shall not limit or
                  otherwise affect any rights of the Employee to any Employee
                  Benefit, or other right arising other than pursuant to this
                  Agreement. Without limiting the generality of the foregoing,
                  upon the Employee's termination of employment as provided in
                  this Section 5, the Company shall pay over to him all vested
                  benefits to which he is entitled under and in accordance with
                  the terms of the Company's employee savings, stock ownership,
                  supplemental executive retirement and similar Plans in the
                  event such payments are not otherwise made in accordance with
                  the terms of such plans.

                           iii)     Except to the extent that the payments or
                  benefits pursuant to this Section 5(a)(iii) would result in a
                  reduction of the amount of the Severance Payment because they
                  would exceed the 299% Amount, (A) for the remainder of the
                  Period of Employment the Company shall arrange to provide the
                  Employee with Employee Benefits substantially similar to those
                  which the Employee was receiving or entitled to receive
                  immediately prior to the Termination Date (and if and to the
                  extent that such benefits shall not or cannot be paid or
                  provided under any policy, plan, program or arrangement of the
                  Company solely due to the fact that the Employee is no longer

<PAGE>

                  an officer or employee of the Company, then the Company shall
                  itself pay or provide for the payment to the Employee, his
                  dependents and beneficiaries, such Employee Benefits) and (B)
                  without limiting the generality of the foregoing, the
                  remainder of the Period of Employment shall be considered
                  service with the Company for the purpose of service credits
                  under the Company's retirement income, supplemental executive
                  retirement and other benefit plans of the Company applicable
                  to the Employee or his beneficiaries immediately prior to the
                  Termination Date. Without otherwise limiting the purposes or
                  effect of Section 6 hereof, Employee Benefits payable to the
                  Employee pursuant to this Section 5(a)(iii) by reason of any
                  welfare benefit plan of the Company (as the term welfare
                  benefit plan is defined in Section 3(1) of the Employee
                  Retirement Income Security Act of 1974, as amended) shall be
                  reduced to the extent comparable welfare benefits are actually
                  received by the Employee from another employer during such
                  period following the Employee's Termination Date until the
                  expiration of the Period of Employment.

                           iv)      Notwithstanding any provision of the Section
                  5(a) to the contrary, in the event the benefits intended to be
                  provided to the Employee pursuant to Section 5(a)(iii) hereof
                  are required to be reduced in whole or in part because the
                  value of such Employee Benefits, when added to the amount of
                  the Severance Payment under Section 5(a)(i), would exceed 299%
                  Amount, the Employee shall have the option to elect to
                  receive, in lieu of all or a portion of the Severance Payment
                  provided in Section 5(a)(i) hereof, one or more Employee
                  Benefits, provided that (A) prior to the receipt of any
                  payment under Section 5(a)(i) hereof, the Employee notifies
                  the Company of the Employee Benefit or Employee Benefits so
                  elected to be received, and (B) in no event shall the
                  aggregate present value of the payments in the nature of
                  compensation (as that phrase is used in Section 280G of the
                  Code) received by the Employee as a result of the receipt of
                  such Employee Benefits, when added to the remaining portion of
                  the Severance Payment, if any, to be received by the Employee,
                  exceed the 299% Amount.

                           v)       In addition to all other compensation due to
                  the Employee, the following shall occur immediately following
                  the occurrence of a Change in Control:

                                    A)       all Company stock options held by
                           the Employee prior to a Change in Control shall
                           become fully exercisable, regardless of whether or
                           not the vesting conditions set forth in the relevant
                           stock option agreements have been satisfied in full;
                           and

                                    B)       all restrictions on any restricted
                           Company stock granted to the Employee prior to a
                           Change in Control shall be removed and the stock
                           shall be freely transferable, regardless of whether
                           the conditions set forth in the relevant restricted
                           stock agreements have been satisfied in full.

         b)       Upon written notice given by the Employee to the Company prior
to the receipt of any payment pursuant to Section 5(a) hereof, the Employee, at
his sole option, without reduction to reflect the present value of such amounts
as aforesaid, may elect to have all or any of the Severance

<PAGE>

Payment payable pursuant to Section 5(a)(i) hereof paid to him on a quarterly or
monthly basis during the remainder of the Period of Employment.

         c)       There shall be no right of set-off or counterclaim in respect
of any claim, debt or obligation against any payment to or benefit for the
Employee provided for in this Agreement.

         d)       Without limiting the rights of the Employee at law or in
equity, if the Company fails to make any payment required to be made hereunder
on a timely basis, the Company shall pay interest on the amount thereof at an
annualized rate of interest equal to the then-applicable Discount Rate or, if
lesser, the highest rate allowed by applicable usury laws.

         6.       NO MITIGATION OBLIGATION. The Company hereby acknowledges that
it will be difficult, and may be impossible, for the Employee to find reasonably
comparable employment following the Termination Date. Accordingly, the parties
hereto expressly agree that the payment of the severance compensation by the
Company to the Employee in accordance with the terms of this Agreement will be
liquidated damages, and that the Employee shall not be required to mitigate the
amount of any payment provided for in this Agreement by seeking other employment
or otherwise, nor shall any profits, income, earnings or other benefits from any
source whatsoever create any mitigation, offset, reduction or any other
obligation on the part of the Employee hereunder or otherwise, except as
expressly provided in Section 5(a)(iii) hereof.

         7.       [Reserved]

         8.       LEGAL FEES AND EXPENSES. In the event of a breach of this
Agreement by the Company, it is the intent of the Company that the Employee not
be required to incur the expenses associated with the enforcement of his rights
under this Agreement by litigation or other legal action because the cost and
expense thereof would substantially detract from the benefits intended to be
extended to the Employee hereunder. Accordingly, if the Company fails to comply
with any of its obligations under this Agreement or in the event that the
Company or any other person takes any action to declare this Agreement void or
unenforceable, or institutes any litigation designed to deny, or to recover
from, the Employee the benefits intended to be provided to the Employee
hereunder, the Company irrevocably authorizes the Employee from time to time to
retain counsel of his choice, at the expense of the Company as hereafter
provided, to represent the Employee in connection with the initiation or defense
of any litigation or other legal action, whether by or against the Company or
any Director, officer, shareholder or other person affiliated with the Company,
in any jurisdiction. Notwithstanding any existing or prior attorney-client
relationship between the Company and such counsel, the Company irrevocably
consents to the Employee's entering into an attorney-client relationship with
such counsel (other than Vinson & Elkins L.L.P.), and in that connection the
Company and the Employee agree that a confidential relationship shall exist
between the Employee and such counsel. The Company shall pay or cause to be paid
and shall be solely responsible for any and all attorneys and related fees and
expenses incurred by the Employee as a result of the Company's failure to
perform this Agreement or any provision thereof or as a result of the Company or
any person contesting the validity or enforceability of this Agreement or any
provision thereof as

<PAGE>

aforesaid. If the Company should prevail in any litigation regarding this
Agreement, however, the Company shall not be responsible for any attorneys and
related fees and expenses incurred by Employee in connection with such
litigation.

         9.       EMPLOYMENT RIGHTS. Nothing expressed or implied in this
Agreement shall create any right or duty on the part of the Company or the
Employee to have the Employee remain in the employment of the Company prior to
any Change in Control; provided, however, that any termination of employment of
the Employee or removal of the Employee as an Officer of the Company following
the commencement of any discussion with a third person that ultimately results
in a Change in Control shall be deemed to be a termination or removal of the
Employee after a Change in Control for purposes of this Agreement.

         10.      WITHHOLDING OF TAXES. The Company may withhold from any
amounts payable under this Agreement all federal, state, city or other taxes as
shall be required pursuant to any law or government regulation or ruling.

         11.      SUCCESSORS AND BINDING AGREEMENT.

                  a)       The Company shall require any successor (whether
         direct or indirect, by purchase, merger, consolidation, reorganization
         or otherwise) to all or substantially all of the business and/or assets
         of the Company to execute an agreement pursuant to which the successor
         expressly assumes all of the liabilities and obligations of the Company
         hereunder and agrees to perform this Agreement in the same manner and
         to the same extent the Company would be required to perform if no such
         succession had taken place. This Agreement shall be binding upon and
         inure to the benefit of the Company and any successor to the Company,
         including without limitation any persons acquiring directly or
         indirectly all or substantially all of the business and/or assets of
         the Company whether by purchase, merger, consolidation, reorganization
         or otherwise (and such successor shall thereafter be deemed the Company
         for the purposes of this Agreement), but shall not otherwise be
         assignable, transferable or delegable by the Company.

                  b)       This Agreement shall inure to the benefit of and be
         enforceable by the Employee's personal or legal representatives,
         executors, administrators, successors, heirs, distributees and/or
         legatees.

                  c)       This Agreement is personal in nature and neither of
         the parties hereto shall, without the consent of the other, assign,
         transfer or delegate this Agreement or any rights or obligations
         hereunder except as expressly provided in Section 11(a) hereof. Without
         limiting the generality of the foregoing, the Employee's right to
         receive payments hereunder shall not be assignable, transferable or
         delegable, whether by pledge, creation of a security interest or
         otherwise, other than by a transfer by the Employee's will or by the
         laws of descent and distribution and, in the event of any attempted
         assignment or transfer contrary to this Section 11(c), the Company
         shall have no liability to pay any amount so attempted to be assigned,
         transferred or delegated.

<PAGE>

                  d)       The Company and the Employee recognize that each
         Party will have no adequate remedy at law for breach by the other of
         any of the agreements contained herein and, in the event of any such
         breach, the Company and the Employee hereby agree and consent that the
         other shall be entitled to a decree of specific performance, mandamus
         or other appropriate remedy to enforce performance of this Agreement.

         12.      NOTICE. For all purposes of this Agreement, all communications
provided for herein shall be in writing and shall be deemed to have been duly
given when delivered or three business days after having been mailed by United
States registered or certified mail, return receipt requested, postage prepaid,
addressed to the Company (to the attention of the Secretary of the Company) at
its principal executive office and to the Employee at his principal residence,
or to such other address as any party may have furnished to the other in writing
and in accordance herewith, except that notices of change of address shall be
effective only upon receipt.

         13.      GOVERNING LAW. The validity, interpretation, construction and
performance of this Agreement shall be governed by the laws of the State of
Texas, without giving effect to the principles of conflict of laws of such
State.

         14.      VALIDITY. If any provision of this Agreement or the
application of any provision hereof to any person or circumstances is held
invalid, unenforceable or otherwise illegal, the remainder of this Agreement and
the application of such provision to any other person or circumstances shall not
be affected, and the provision so held to be invalid, unenforceable or otherwise
illegal shall be reformed to the extent (and only to the extent) necessary to
make it enforceable, valid and legal.

         15.      MISCELLANEOUS. No provisions of this Agreement may be
modified, waived or discharged unless such waiver, modification or discharge is
agreed to in writing signed by the Employee and the Company. No waiver by either
party hereto at any time of any breach by the other party hereto or compliance
with any condition or provision of this Agreement to be performed by such other
party shall be deemed a waiver of similar or dissimilar provisions or conditions
at the same or at any prior or subsequent time. No agreements or
representations, oral or otherwise, expressed or implied with respect to the
subject matter hereof have been made by either party which are not set forth
expressly in this Agreement.

         16.      PRIOR AGREEMENTS. This Agreement is voluntarily entered into
and supersedes and takes the place of any prior change in control, severance or
employment agreements between the parties hereto. The parties hereto expressly
agree and hereby declare that any and all prior change in control, severance or
employment agreements between the parties are terminated and of no force or
effect.

         17.      COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original but all of which
together will constitute one and the same agreement.

<PAGE>

         IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
executed and delivered as of the date first above written.

                                         SOUTHWEST BANCORPORATION OF TEXAS, INC.

                                         By:  /s/  Paul B. Murphy
                                         ---------------------------------------

                                         EMPLOYEE:

                                         /s/ Debra J. Innes
                                         ---------------------------------------
<PAGE>

                           CHANGE IN CONTROL AGREEMENT

         This CHANGE IN CONTROL AGREEMENT (Agreement), effective as of January
1, 2000 (the Effective Date), by and between Southwest Bancorporation of Texas,
Inc., a Texas corporation (the Company), and Marylyn Manis (the Executive);

                              W I T N E S S E T H:

         WHEREAS, the Employee is an officer of the Company or its wholly-owned
subsidiary, Southwest Bank of Texas National Association (the Bank) and has made
and/or is expected to make or continue to make major contributions to the
profitability, growth and financial strength of the Company and the Bank;

         WHEREAS, references herein to the Employee's employment by the Company
shall also mean his or her employment by the Bank, and references herein to
payments of any nature to be made by the Company to the Employee shall mean that
either the Company will make such payments or it will cause the Bank to make
such payments to the Employee;

         WHEREAS, the Company desires to assure itself of both present and
future continuity of management in the event of a Change in Control (as defined
hereafter) and desires to establish certain minimum compensation rights of its
key officers, including the Employee, applicable in the event of a Change in
Control;

         WHEREAS, the Company wishes to ensure that its key officers are not
practically disabled from discharging their duties upon a Change in Control;

         WHEREAS, this Agreement is not intended to alter materially the
compensation and benefits which the Employee could reasonably expect to receive
from the Company or the Bank absent a Change in Control and, accordingly,
although effective and binding as of the date hereof, this Agreement shall
become operative only upon the occurrence of a Change of Control; and

         WHEREAS, the Employee is willing to render services to the Company and
the Bank on the terms and subject to the conditions set forth in this Agreement;

         NOW, THEREFORE, the Company and the Employee agree as follows:

         1.       OPERATION OF AGREEMENT.

                  a)       This Agreement shall be effective and binding as of
         the Effective Date, but, anything in this Agreement to the contrary
         notwithstanding, this Agreement shall not be operative unless and until
         there shall have occurred a Change in Control.
<PAGE>

                  For purposes of this Agreement, a Change in Control shall have
         occurred if at any time during the Term (as that term is hereafter
         defined) any of the following events shall occur:

                           i)       The Company is merged, consolidated or
                  reorganized into or with or sells all or substantially all of
                  its assets to another corporation or other legal person, and
                  as a result of such merger, consolidation, reorganization or
                  sale (A) less than a majority of the combined voting power of
                  the then-outstanding securities of such corporation or person
                  immediately after such transaction are held in the aggregate
                  by the holders of Voting Stock (as that term is hereinafter
                  defined) of the Company immediately prior to such transaction
                  and (B) it is intended that persons serving as Directors of
                  the Company immediately prior to the transaction will
                  constitute none of or less than a majority of the Directors of
                  the other corporation or legal person after consummation of
                  the transaction; or

                           ii)      If during any one (1) year period,
                  individuals who at the beginning of any such period constitute
                  the Directors of the Company cease for any reason to
                  constitute at least a majority thereof, unless the election,
                  or the nomination for election by the Company's shareholders,
                  of each Director of the Company first elected during such
                  period was approved by a vote of at least two-thirds of the
                  Directors of the Company then still in office who were
                  Directors of the Company at the beginning of any such period.

                  b)       Upon occurrence of a Change in Control at any time
         during the Term, this Agreement shall become immediately operative.

                  c)       The period during which this Agreement shall be in
         effect (the Term) shall commence as of the date hereof and shall expire
         as of the later of (i) the close of business on December 31, 2002, and
         (ii) the expiration of the Period of Employment (as that term is
         hereinafter defined); provided, however, that (A) commencing on
         December 31, 2002, and the last day of each of the Company's Fiscal
         Years thereafter, the Term of this Agreement shall automatically be
         extended for an additional year unless, not later than the last day of
         the immediately preceding September, the Company or the Employee shall
         have given notice that it or he, as the case may be, does not wish to
         have the Term extended and (B) subject to Section 9 hereof, if, prior
         to a Change in Control, the Employee ceases for any reason to be an
         employee of the Company, thereupon the Term shall be deemed to have
         expired and this Agreement shall immediately terminate and be of no
         further effect.

         2.       EMPLOYMENT; PERIOD OF EMPLOYMENT.

                  a)       Subject to the terms and conditions of this
         Agreement, upon the occurrence of a Change in Control, the Company
         shall continue the Employee in its employ and the Employee shall remain
         in the employ of the Company for the period set forth in Section 2(b)
         hereof (the Period of Employment). Throughout the Period of Employment,
         the Employee shall devote substantially all of his time during normal
         business hours (subject to vacations, sick leave and other absences in
         accordance with the policies of the Company as in effect for

<PAGE>

         senior executives immediately prior to the Change in Control) to the
         business and affairs of the Company, but nothing in this Agreement
         shall preclude the Employee from devoting reasonable periods of time
         during normal business hours to (i) serving as a director, trustee or
         member of or participant in any organization or business so long as
         such organization or business is not engaged, directly or indirectly,
         in the business of commercial banking in competition with the business
         of the Company, (ii) engaging in charitable and community activities,
         or (iii) managing his personal investments.

                  b)       The Period of Employment shall commence on the date
         of an occurrence of a Change in Control and, subject only to the
         provisions of Section 4 hereof, shall continue until the earlier of (i)
         the expiration of the second anniversary of the occurrence of the
         Change in Control or (ii) the Employee's death.

         3.       COMPENSATION DURING PERIOD OF EMPLOYMENT.

                  a)       Upon the occurrence of a Change in Control, the
         Employee shall receive during the Period of Employment (i) annual base
         salary at a rate not less than the Employees annual fixed or base
         compensation payable monthly or otherwise as in effect for senior
         executives of the Company immediately prior to the occurrence of a
         Change in Control or such higher rate as may be determined from time to
         time by the Board of Directors of the Company (the Board) or the
         Compensation Committee thereof (the Committee) (which base salary at
         such rate is herein referred to as Base Pay) and (ii) an annual cash
         bonus in an amount determined for the Employee in accordance with the
         Company's incentive compensation plan or plans in effect at the time of
         the Change in Control or in accordance with any bonus, incentive,
         profit-sharing, performance, discretionary pay or similar policy, plan,
         program or arrangement of the Company or any successor thereto
         providing benefits at least as great as the benefits payable thereunder
         prior to the Change in Control (Incentive Pay); provided, however, that
         nothing herein shall preclude a change in the mix between Base Pay and
         Incentive Pay so long as the aggregate cash compensation received by
         the Employee in any one calendar year is not reduced in connection
         therewith or as a result thereof and, provided further, however, that
         in no event shall any increase in the Employee's aggregate cash
         compensation or any portion thereof in any way diminish any other
         obligation of the Company under this Agreement.

                  b)       For his service pursuant to Section 2(a) hereof,
         during the Period of Employment the Employee shall, if and on the same
         basis as he participated therein immediately prior to the Change in
         Control, be a full participant in, and shall be entitled to the
         perquisites, benefits and service credit for benefits as provided under
         any and all employee retirement income and welfare benefit policies,
         plans, programs or arrangements in which senior executives of the
         Company participate, including without limitation any stock option,
         stock purchase, stock appreciation, savings, pension, supplemental
         executive retirement or other retirement income or welfare benefit,
         deferred compensation, incentive compensation, group and/or executive
         life, accident, health, dental, medical/hospital or other insurance
         (whether funded by actual insurance or self-insured by the Company),
         disability, salary continuation, expense reimbursement and other
         employee benefit policies, plans, programs or arrangements that may now
         exist or any equivalent successor policies, plans,

<PAGE>

         programs or arrangements that may be adopted hereafter by the Company
         providing perquisites, benefits and service credit for benefits at
         least as great as are payable thereunder prior to a Change in
         Control(collectively, Employee Benefits); provided, however, that the
         Employee's rights thereunder shall be governed by the terms thereof and
         shall not be enlarged hereunder or otherwise affected hereby. Subject
         to the proviso in the immediately preceding sentence, if and to the
         extent such perquisites, benefits or service credit for benefits are
         not payable or provided under any such policy, plan, program or
         arrangement as a result of the amendment or termination thereof, then
         the Company shall itself pay or provide therefor. Nothing in this
         Agreement shall preclude improvement or enhancement of any such
         Employee Benefits, provided that no such improvement shall in any way
         diminish any other obligation of the Company under this Agreement.

                  c)       The Company has determined that the amounts payable
         pursuant to this Section 3 constitute reasonable compensation.
         Accordingly, notwithstanding any other provision hereof, unless such
         action would be expressly prohibited by applicable law, if any amount
         paid or payable pursuant to this Section 3 is subject to the excise tax
         imposed by Section 4999 of the Internal Revenue Code of 1986, as
         amended (the Code), the Company will pay to the Employee an additional
         amount in cash equal to the amount necessary to cause the aggregate
         remuneration received by the Employee under this Section 3, including
         such additional cash payment (net of all federal, state and local
         income taxes and all taxes payable as the result of the application of
         Sections 280G and 4999 of the Code) to be equal to the aggregate
         remuneration the Employee would have received under this Section 3,
         excluding such additional payment (net of all federal, state and local
         income taxes), as if Sections 280G and 4999 of the Code (and any
         successor provisions thereto) had not been enacted into law.

         4.       TERMINATION FOLLOWING A CHANGE IN CONTROL.

                  a)       In the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Company during the
         Period of Employment only upon the occurrence of one or more of the
         following events:

                           i)       If the Employee is unable to perform the
                  essential functions of his job (with or without reasonable
                  accommodation) because he has become permanently disabled
                  within the meaning of, and actually begins to receive
                  disability benefits pursuant to, the long-term disability plan
                  in effect for senior executives or, if applicable, employees
                  of the Company immediately prior to the Change in Control; or

                           ii)      For Cause, which for purposes of this
                  Agreement shall mean that, prior to any termination pursuant
                  to Section 4(b) hereof, the Employee shall have committed:

                                    A)       Gross negligence or willful
                           misconduct in connection with his duties or in the
                           course of his employment with the Company;

<PAGE>

                                    B)       an act of fraud, embezzlement or
                           theft in connection with his duties or in the course
                           of his employment with the Company;

                                    C)       intentional wrongful damage to
                           property of the Company;

                                    D)       intentional wrongful disclosure of
                           secret processes or confidential information of the
                           Company;

                                    E)       intentional wrongful engagement in
                           any Competitive Activity; or

                                    F)       an act leading to a conviction of a
                           felony or a misdemeanor involving moral turpitude.

                  For purposes of this Agreement, no act, or failure to act, on
         the part of the Employee shall be deemed intentional if it was due
         primarily to an error in judgment or negligence, but shall be deemed
         intentional only if done, or omitted to be done, by the Employee not in
         good faith and without reasonable belief that his action or omission
         was in the best interest of the Company. Notwithstanding the foregoing,
         the Employee shall not be deemed to have been terminated for Cause
         hereunder unless and until there shall have been delivered to the
         Employee a copy of a resolution duly adopted by the affirmative vote of
         not less than three-quarters of the Board then in office at a meeting
         of the Board called and held for such purpose (after reasonable notice
         to the Employee and an opportunity for the Employee, together with his
         counsel, to be heard before the Board), finding that, in the good faith
         opinion of the Board, the Employee had committed an act set forth above
         in this Section 4(a)(ii) and specifying the particulars thereof in
         detail. Nothing herein shall limit the right of the Employee or his
         beneficiaries to contest the validity or propriety of any such
         determination.

                  b)       in the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Employee during the
         Period of Employment with the right to benefits as provided in Section
         5 hereof upon the occurrence of one or more of the following events:

                           i)       Any termination by the Company of the
                  employment of the Employee for any reason other than for Cause
                  or as a result of the death of the Employee or by reason of
                  the Employee's disability and the actual receipt of disability
                  benefits in accordance with Section 4(a)(i) hereof; or

                           ii)      Termination by the Employee of his
                  employment with the Company upon the occurrence of any of the
                  following events:

                                    A)       A reduction in the aggregate of the
                           Employee's Base Pay and Incentive Pay received from
                           the Company, or the termination of the Employee's
                           rights to any Employee Benefits to which he was
                           entitled immediately prior to the Change in Control
                           or a reduction in scope or value thereof without the
                           prior written consent of the Employee, any of which
                           is not

<PAGE>

                           remedied within 10 calendar days after receipt by the
                           Company of written notice from the Employee of such
                           change, reduction or termination, as the case may be;

                                    B)       The liquidation, dissolution,
                           merger, consolidation or reorganization of the
                           Company or transfer of all or a significant portion
                           of its business and/or assets, unless the successor
                           or successors (by liquidation, merger, consolidation,
                           reorganization or otherwise) to which all or a
                           significant portion of its business and/or assets
                           have been transferred (directly or by operation of
                           law) shall have assumed all duties and obligations of
                           the Company under this Agreement pursuant to Section
                           11 hereof;

                                    C)       The Company requires the Employee
                           to have his principal location of work changed to any
                           location which is in excess of 50 miles from the
                           location thereof immediately prior to the Change of
                           Control or to travel away from his office in the
                           course of discharging his responsibilities or duties
                           hereunder significantly more (in terms of either
                           consecutive days or aggregate days in any calendar
                           year) than was required of him prior to the Change of
                           Control without, in either case, his prior consent;
                           or

                                    D)       Any material breach of this
                           Agreement by the Company or any successor thereto.

                  c)       A termination by the Company pursuant to Section 4(a)
         hereof or by the Employee pursuant to Section 4(b) hereof shall not
         affect any rights which the Employee may have pursuant to any
         agreement, policy, plan, program or arrangement of the Company
         providing Employee Benefits, which rights shall be governed by the
         terms thereof. If this Agreement or the employment of the Employee is
         terminated under circumstances in which the Employee is not entitled to
         any payments under Sections 3 or 5 hereof, the Employee shall have no
         further obligation or liability to the Company hereunder with respect
         to his prior or any future employment by the Company.

         5.       SEVERANCE COMPENSATION.

                  a)       If, following the occurrence of a Change in Control,
         the Company shall terminate the Employee's employment during the Period
         of Employment other than pursuant to Section 4(a) hereof, or if the
         Employee shall terminate his employment pursuant to Section 4(b)
         hereof, the Company shall pay to the Employee the amount specified in
         Section 5(a)(i) hereof within ten business days after the date (the
         Termination Date) that the Employee's employment is terminated (the
         effective date of which shall be the date of termination, or such other
         date that may be specified by the Employee if the termination is
         pursuant to Section 4(b) hereof):

                           i)       In lieu of any further payments to the
                  Employee for periods subsequent to the Termination Date, but
                  without affecting the rights of the Employee referred to in
                  Section 5(b) hereof, a lump sum payment (the Severance
                  Payment) in

<PAGE>

                  an amount equal to the present value (using a discount rate
                  required to be utilized for purposes of computations under
                  Section 280G of the Code or any successor provision thereto,
                  or if no such rate is so required to be used, a rate equal to
                  the then-applicable interest rate prescribed by the Pension
                  Benefit Guarantee Corporation for benefit valuations in
                  connection with non-multiemployer pension plan terminations
                  assuming the immediate commencement of benefit payments (the
                  Discount Rate) of the sum of (A) the Base Pay (at the highest
                  rate in effect during the Term prior to the Termination Date)
                  for one year, plus (B) the Incentive Pay for one year (based
                  upon the greatest amount of Incentive Pay paid or payable to
                  the Employee for any year during the three calendar years
                  preceding the year in which the Termination Date occurs);
                  provided, however, that in no event will the present value (as
                  determined under Section 280G of the Code or any successor
                  provision thereto) of the amount otherwise payable hereunder,
                  when added to the present value (as determined under Section
                  280G of the Code or any successor provision thereto) of any
                  other parachute payments (as that term is defined in Section
                  280G of the Code (without regard to Section 280G(b)(2)(A)(ii)
                  thereof) or any successor provision thereto) from the Company,
                  exceed an amount (the A299% Amount) equal to 299% of the
                  Employee's base amount (as that term is defined in Section
                  280G of the Code or any successor provision thereto) and if
                  the amount otherwise payable hereunder would exceed the 299%
                  Amount, the Severance Payment shall be reduced to the extent
                  necessary so that the aggregate present value determined in
                  the previous clause does not exceed the 299% Amount.

                           ii)      The determination of whether any amount
                  otherwise payable under Section 5(a)(i) causes the 299% Amount
                  to be exceeded shall be made, if requested by the Employee or
                  the Company, by tax counsel selected by the Company and
                  reasonably acceptable to the Employee. The costs of obtaining
                  such determination shall be borne by the Company. The fact
                  that the Employee shall have his right to the Severance
                  Payment reduced as a result of the existence of the
                  limitations contained in this Section 5(a) shall not limit or
                  otherwise affect any rights of the Employee to any Employee
                  Benefit, or other right arising other than pursuant to this
                  Agreement. Without limiting the generality of the foregoing,
                  upon the Employee's termination of employment as provided in
                  this Section 5, the Company shall pay over to him all vested
                  benefits to which he is entitled under and in accordance with
                  the terms of the Company's employee savings, stock ownership,
                  supplemental executive retirement and similar Plans in the
                  event such payments are not otherwise made in accordance with
                  the terms of such plans.

                           iii)     Except to the extent that the payments or
                  benefits pursuant to this Section 5(a)(iii) would result in a
                  reduction of the amount of the Severance Payment because they
                  would exceed the 299% Amount, (A) for the remainder of the
                  Period of Employment the Company shall arrange to provide the
                  Employee with Employee Benefits substantially similar to those
                  which the Employee was receiving or entitled to receive
                  immediately prior to the Termination Date (and if and to the
                  extent that such benefits shall not or cannot be paid or
                  provided under any policy, plan, program or arrangement of the
                  Company solely due to the fact that the Employee is no longer

<PAGE>

                  an officer or employee of the Company, then the Company shall
                  itself pay or provide for the payment to the Employee, his
                  dependents and beneficiaries, such Employee Benefits) and (B)
                  without limiting the generality of the foregoing, the
                  remainder of the Period of Employment shall be considered
                  service with the Company for the purpose of service credits
                  under the Company's retirement income, supplemental executive
                  retirement and other benefit plans of the Company applicable
                  to the Employee or his beneficiaries immediately prior to the
                  Termination Date. Without otherwise limiting the purposes or
                  effect of Section 6 hereof, Employee Benefits payable to the
                  Employee pursuant to this Section 5(a)(iii) by reason of any
                  welfare benefit plan of the Company (as the term welfare
                  benefit plan is defined in Section 3(1) of the Employee
                  Retirement Income Security Act of 1974, as amended) shall be
                  reduced to the extent comparable welfare benefits are actually
                  received by the Employee from another employer during such
                  period following the Employee's Termination Date until the
                  expiration of the Period of Employment.

                           iv)      Notwithstanding any provision of the Section
                  5(a) to the contrary, in the event the benefits intended to be
                  provided to the Employee pursuant to Section 5(a)(iii) hereof
                  are required to be reduced in whole or in part because the
                  value of such Employee Benefits, when added to the amount of
                  the Severance Payment under Section 5(a)(i), would exceed 299%
                  Amount, the Employee shall have the option to elect to
                  receive, in lieu of all or a portion of the Severance Payment
                  provided in Section 5(a)(i) hereof, one or more Employee
                  Benefits, provided that (A) prior to the receipt of any
                  payment under Section 5(a)(i) hereof, the Employee notifies
                  the Company of the Employee Benefit or Employee Benefits so
                  elected to be received, and (B) in no event shall the
                  aggregate present value of the payments in the nature of
                  compensation (as that phrase is used in Section 280G of the
                  Code) received by the Employee as a result of the receipt of
                  such Employee Benefits, when added to the remaining portion of
                  the Severance Payment, if any, to be received by the Employee,
                  exceed the 299% Amount.

                           v)       In addition to all other compensation due to
                  the Employee, the following shall occur immediately following
                  the occurrence of a Change in Control:

                                    A)       all Company stock options held by
                           the Employee prior to a Change in Control shall
                           become fully exercisable, regardless of whether or
                           not the vesting conditions set forth in the relevant
                           stock option agreements have been satisfied in full;
                           and

                                    B)       all restrictions on any restricted
                           Company stock granted to the Employee prior to a
                           Change in Control shall be removed and the stock
                           shall be freely transferable, regardless of whether
                           the conditions set forth in the relevant restricted
                           stock agreements have been satisfied in full.

                  b)       Upon written notice given by the Employee to the
         Company prior to the receipt of any payment pursuant to Section 5(a)
         hereof, the Employee, at his sole option, without reduction to reflect
         the present value of such amounts as aforesaid, may elect to have all
         or any of the Severance

<PAGE>

Payment payable pursuant to Section 5(a)(i) hereof paid to him on a quarterly or
monthly basis during the remainder of the Period of Employment.

                  c)       There shall be no right of set-off or counterclaim
         in respect of any claim, debt or obligation against any payment to or
         benefit for the Employee provided for in this Agreement.

                  d)       Without limiting the rights of the Employee at law
         or in equity, if the Company fails to make any payment required to be
         made hereunder on a timely basis, the Company shall pay interest on the
         amount thereof at an annualized rate of interest equal to the
         then-applicable Discount Rate or, if lesser, the highest rate allowed
         by applicable usury laws.

         6.       NO MITIGATION OBLIGATION. The Company hereby acknowledges that
it will be difficult, and may be impossible, for the Employee to find reasonably
comparable employment following the Termination Date. Accordingly, the parties
hereto expressly agree that the payment of the severance compensation by the
Company to the Employee in accordance with the terms of this Agreement will be
liquidated damages, and that the Employee shall not be required to mitigate the
amount of any payment provided for in this Agreement by seeking other employment
or otherwise, nor shall any profits, income, earnings or other benefits from any
source whatsoever create any mitigation, offset, reduction or any other
obligation on the part of the Employee hereunder or otherwise, except as
expressly provided in Section 5(a)(iii) hereof.

         7.       COMPETITIVE ACTIVITY. During a period ending six months
following the Termination Date, if the Executive shall have received or shall be
receiving benefits under Section 5(a) hereof, the Executive shall not, without
the prior written consent by the Company, directly or indirectly engage in the
business of commercial banking in competition with the business of the Company
within Harris County, Fort Bend County and Montgomery County, Texas and any
other geographical area served by the Company during the twelve (12) month
period immediately preceding termination of employment nor will the Executive
engage, within this geographical area, in the design, development, distribution,
or sale of a product or service in competition with any product or service being
marketed or planned by the Company at such time, the plans, designs or
specifications of which have been revealed to the Executive. The Executive
acknowledges that these limited prohibitions are reasonable as to time,
geographical area and scope of activities to be restrained and that the limited
prohibitions do not impose a greater restraint than is necessary to protect the
Company's goodwill, proprietary information and other business interests.
Competitive Activity shall mean the prohibitions set forth above in this Section
7, but shall not include (i) the mere ownership of securities in any such
enterprise and exercise of rights appurtenant thereto or (ii) participation in
management of any such enterprise or business operation thereof other than in
connection with the competitive operation of such enterprise.

         8.       LEGAL FEES AND EXPENSES. In the event of a breach of this
Agreement by the Company, it is the intent of the Company that the Employee not
be required to incur the expenses associated with the enforcement of his rights
under this Agreement by litigation or other legal action because the cost and
expense thereof would substantially detract from the benefits intended to be
extended to the Employee hereunder. Accordingly, if the Company fails to comply
with any of its obligations under this Agreement or in the event that the
Company or any other person takes any action to declare this Agreement void or
unenforceable, or institutes any litigation designed to deny,

<PAGE>

or to recover from, the Employee the benefits intended to be provided to the
Employee hereunder, the Company irrevocably authorizes the Employee from time to
time to retain counsel of his choice, at the expense of the Company as hereafter
provided, to represent the Employee in connection with the initiation or defense
of any litigation or other legal action, whether by or against the Company or
any Director, officer, shareholder or other person affiliated with the Company,
in any jurisdiction. Notwithstanding any existing or prior attorney-client
relationship between the Company and such counsel, the Company irrevocably
consents to the Employee's entering into an attorney-client relationship with
such counsel (other than Vinson & Elkins L.L.P.), and in that connection the
Company and the Employee agree that a confidential relationship shall exist
between the Employee and such counsel. The Company shall pay or cause to be paid
and shall be solely responsible for any and all attorneys and related fees and
expenses incurred by the Employee as a result of the Company's failure to
perform this Agreement or any provision thereof or as a result of the Company or
any person contesting the validity or enforceability of this Agreement or any
provision thereof as aforesaid. If the Company should prevail in any litigation
regarding this Agreement, however, the Company shall not be responsible for any
attorneys and related fees and expenses incurred by Employee in connection with
such litigation.

         9.       EMPLOYMENT RIGHTS. Nothing expressed or implied in this
Agreement shall create any right or duty on the part of the Company or the
Employee to have the Employee remain in the employment of the Company prior to
any Change in Control; provided, however, that any termination of employment of
the Employee or removal of the Employee as an Officer of the Company following
the commencement of any discussion with a third person that ultimately results
in a Change in Control shall be deemed to be a termination or removal of the
Employee after a Change in Control for purposes of this Agreement.

         10.      WITHHOLDING OF TAXES. The Company may withhold from any
amounts payable under this Agreement all federal, state, city or other taxes as
shall be required pursuant to any law or government regulation or ruling.

         11.      SUCCESSORS AND BINDING AGREEMENT.

                  a)       The Company shall require any successor (whether
         direct or indirect, by purchase, merger, consolidation, reorganization
         or otherwise) to all or substantially all of the business and/or assets
         of the Company to execute an agreement pursuant to which the successor
         expressly assumes all of the liabilities and obligations of the Company
         hereunder and agrees to perform this Agreement in the same manner and
         to the same extent the Company would be required to perform if no such
         succession had taken place. This Agreement shall be binding upon and
         inure to the benefit of the Company and any successor to the Company,
         including without limitation any persons acquiring directly or
         indirectly all or substantially all of the business and/or assets of
         the Company whether by purchase, merger, consolidation, reorganization
         or otherwise (and such successor shall thereafter be deemed the Company
         for the purposes of this Agreement), but shall not otherwise be
         assignable, transferable or delegable by the Company.

<PAGE>

                  b)       This Agreement shall inure to the benefit of and be
         enforceable by the Employee's personal or legal representatives,
         executors, administrators, successors, heirs, distributees and/or
         legatees.

                  c)       This Agreement is personal in nature and neither of
         the parties hereto shall, without the consent of the other, assign,
         transfer or delegate this Agreement or any rights or obligations
         hereunder except as expressly provided in Section 11(a) hereof. Without
         limiting the generality of the foregoing, the Employee's right to
         receive payments hereunder shall not be assignable, transferable or
         delegable, whether by pledge, creation of a security interest or
         otherwise, other than by a transfer by the Employee's will or by the
         laws of descent and distribution and, in the event of any attempted
         assignment or transfer contrary to this Section 11(c), the Company
         shall have no liability to pay any amount so attempted to be assigned,
         transferred or delegated.

                  d)       The Company and the Employee recognize that each
         Party will have no adequate remedy at law for breach by the other of
         any of the agreements contained herein and, in the event of any such
         breach, the Company and the Employee hereby agree and consent that the
         other shall be entitled to a decree of specific performance, mandamus
         or other appropriate remedy to enforce performance of this Agreement.

         12.      NOTICE. For all purposes of this Agreement, all communications
provided for herein shall be in writing and shall be deemed to have been duly
given when delivered or three business days after having been mailed by United
States registered or certified mail, return receipt requested, postage prepaid,
addressed to the Company (to the attention of the Secretary of the Company) at
its principal executive office and to the Employee at his principal residence,
or to such other address as any party may have furnished to the other in writing
and in accordance herewith, except that notices of change of address shall be
effective only upon receipt.

         13.      GOVERNING LAW. The validity, interpretation, construction and
performance of this Agreement shall be governed by the laws of the State of
Texas, without giving effect to the principles of conflict of laws of such
State.

         14.      VALIDITY. If any provision of this Agreement or the
application of any provision hereof to any person or circumstances is held
invalid, unenforceable or otherwise illegal, the remainder of this Agreement and
the application of such provision to any other person or circumstances shall not
be affected, and the provision so held to be invalid, unenforceable or otherwise
illegal shall be reformed to the extent (and only to the extent) necessary to
make it enforceable, valid and legal.

         15.      MISCELLANEOUS. No provisions of this Agreement may be
modified, waived or discharged unless such waiver, modification or discharge is
agreed to in writing signed by the Employee and the Company. No waiver by either
party hereto at any time of any breach by the other party hereto or compliance
with any condition or provision of this Agreement to be performed by such other
party shall be deemed a waiver of similar or dissimilar provisions or conditions
at the same or at any prior or subsequent time. No agreements or
representations, oral or otherwise,

<PAGE>

expressed or implied with respect to the subject matter hereof have been made by
either party which are not set forth expressly in this Agreement.

         16.      PRIOR AGREEMENTS. This Agreement is voluntarily entered into
and supersedes and takes the place of any prior change in control, severance or
employment agreements between the parties hereto. The parties hereto expressly
agree and hereby declare that any and all prior change in control, severance or
employment agreements between the parties are terminated and of no force or
effect.

         17.      COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original but all of which
together will constitute one and the same agreement.

<PAGE>

         IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
executed and delivered as of the date first above written.

                                         SOUTHWEST BANCORPORATION OF TEXAS, INC.

                                         By:  /s/  Paul B. Murphy
                                         ---------------------------------------

                                         EXECUTIVE:

                                         /s/  Marylyn Manis
                                         ---------------------------------------
<PAGE>

                           CHANGE IN CONTROL AGREEMENT

         This CHANGE IN CONTROL AGREEMENT (Agreement), effective as of January
1, 2000 (the Effective Date), by and between Southwest Bancorporation of Texas,
Inc., a Texas corporation (the Company), and George Marshall (the Employee);

                              W I T N E S S E T H:

         WHEREAS, the Employee is an officer of the Company or its wholly-owned
subsidiary, Southwest Bank of Texas National Association (the Bank) and has made
and/or is expected to make or continue to make major contributions to the
profitability, growth and financial strength of the Company and the Bank;

         WHEREAS, references herein to the Employee's employment by the Company
shall also mean his or her employment by the Bank, and references herein to
payments of any nature to be made by the Company to the Employee shall mean that
either the Company will make such payments or it will cause the Bank to make
such payments to the Employee;

         WHEREAS, the Company desires to assure itself of both present and
future continuity of management in the event of a Change in Control (as defined
hereafter) and desires to establish certain minimum compensation rights of its
key officers, including the Employee, applicable in the event of a Change in
Control;

         WHEREAS, the Company wishes to ensure that its key officers are not
practically disabled from discharging their duties upon a Change in Control;

         WHEREAS, this Agreement is not intended to alter materially the
compensation and benefits which the Employee could reasonably expect to receive
from the Company or the Bank absent a Change in Control and, accordingly,
although effective and binding as of the date hereof, this Agreement shall
become operative only upon the occurrence of a Change of Control; and

         WHEREAS, the Employee is willing to render services to the Company and
the Bank on the terms and subject to the conditions set forth in this Agreement;

         NOW, THEREFORE, the Company and the Employee agree as follows:

         1.       OPERATION OF AGREEMENT.

                  a)       This Agreement shall be effective and binding as of
         the Effective Date, but, anything in this Agreement to the contrary
         notwithstanding, this Agreement shall not be operative unless and until
         there shall have occurred a Change in Control.
<PAGE>

                  For purposes of this Agreement, a Change in Control shall have
         occurred if at any time during the Term (as that term is hereafter
         defined) any of the following events shall occur:

                           i)       The Company is merged, consolidated or
                  reorganized into or with or sells all or substantially all of
                  its assets to another corporation or other legal person, and
                  as a result of such merger, consolidation, reorganization or
                  sale (A) less than a majority of the combined voting power of
                  the then-outstanding securities of such corporation or person
                  immediately after such transaction are held in the aggregate
                  by the holders of Voting Stock (as that term is hereinafter
                  defined) of the Company immediately prior to such transaction
                  and (B) it is intended that persons serving as Directors of
                  the Company immediately prior to the transaction will
                  constitute none of or less than a majority of the Directors of
                  the other corporation or legal person after consummation of
                  the transaction; or

                           ii)      If during any one (1) year period,
                  individuals who at the beginning of any such period constitute
                  the Directors of the Company cease for any reason to
                  constitute at least a majority thereof, unless the election,
                  or the nomination for election by the Company's shareholders,
                  of each Director of the Company first elected during such
                  period was approved by a vote of at least two-thirds of the
                  Directors of the Company then still in office who were
                  Directors of the Company at the beginning of any such period.

                  b)       Upon occurrence of a Change in Control at any time
         during the Term, this Agreement shall become immediately operative.

                  c)       The period during which this Agreement shall be in
         effect (the Term) shall commence as of the date hereof and shall expire
         as of the later of (i) the close of business on December 31, 2002, and
         (ii) the expiration of the Period of Employment (as that term is
         hereinafter defined); provided, however, that (A) commencing on
         December 31, 2002, and the last day of each of the Company's Fiscal
         Years thereafter, the Term of this Agreement shall automatically be
         extended for an additional year unless, not later than the last day of
         the immediately preceding September, the Company or the Employee shall
         have given notice that it or he, as the case may be, does not wish to
         have the Term extended and (B) subject to Section 9 hereof, if, prior
         to a Change in Control, the Employee ceases for any reason to be an
         employee of the Company, thereupon the Term shall be deemed to have
         expired and this Agreement shall immediately terminate and be of no
         further effect.

         2.       EMPLOYMENT; PERIOD OF EMPLOYMENT.

                  a)       Subject to the terms and conditions of this
         Agreement, upon the occurrence of a Change in Control, the Company
         shall continue the Employee in its employ and the Employee shall remain
         in the employ of the Company for the period set forth in Section 2(b)
         hereof (the Period of Employment). Throughout the Period of Employment,
         the Employee shall devote substantially all of his time during normal
         business hours (subject to vacations, sick leave and other absences in
         accordance with the policies of the Company as in effect for

<PAGE>

         senior executives immediately prior to the Change in Control) to the
         business and affairs of the Company, but nothing in this Agreement
         shall preclude the Employee from devoting reasonable periods of time
         during normal business hours to (i) serving as a director, trustee or
         member of or participant in any organization or business so long as
         such organization or business is not engaged, directly or indirectly,
         in the business of commercial banking in competition with the business
         of the Company, (ii) engaging in charitable and community activities,
         or (iii) managing his personal investments.

                  b)       The Period of Employment shall commence on the date
         of an occurrence of a Change in Control and, subject only to the
         provisions of Section 4 hereof, shall continue until the earlier of (i)
         the expiration of the second anniversary of the occurrence of the
         Change in Control or (ii) the Employee's death.

         3.       COMPENSATION DURING PERIOD OF EMPLOYMENT.

                  a)       Upon the occurrence of a Change in Control, the
         Employee shall receive during the Period of Employment (i) annual base
         salary at a rate not less than the Employees annual fixed or base
         compensation payable monthly or otherwise as in effect for senior
         executives of the Company immediately prior to the occurrence of a
         Change in Control or such higher rate as may be determined from time to
         time by the Board of Directors of the Company (the Board) or the
         Compensation Committee thereof (the Committee) (which base salary at
         such rate is herein referred to as Base Pay) and (ii) an annual cash
         bonus in an amount determined for the Employee in accordance with the
         Company's incentive compensation plan or plans in effect at the time of
         the Change in Control or in accordance with any bonus, incentive,
         profit-sharing, performance, discretionary pay or similar policy, plan,
         program or arrangement of the Company or any successor thereto
         providing benefits at least as great as the benefits payable thereunder
         prior to the Change in Control (Incentive Pay); provided, however, that
         nothing herein shall preclude a change in the mix between Base Pay and
         Incentive Pay so long as the aggregate cash compensation received by
         the Employee in any one calendar year is not reduced in connection
         therewith or as a result thereof and, provided further, however, that
         in no event shall any increase in the Employee's aggregate cash
         compensation or any portion thereof in any way diminish any other
         obligation of the Company under this Agreement.

                  b)       For his service pursuant to Section 2(a) hereof,
         during the Period of Employment the Employee shall, if and on the same
         basis as he participated therein immediately prior to the Change in
         Control, be a full participant in, and shall be entitled to the
         perquisites, benefits and service credit for benefits as provided under
         any and all employee retirement income and welfare benefit policies,
         plans, programs or arrangements in which senior executives of the
         Company participate, including without limitation any stock option,
         stock purchase, stock appreciation, savings, pension, supplemental
         executive retirement or other retirement income or welfare benefit,
         deferred compensation, incentive compensation, group and/or executive
         life, accident, health, dental, medical/hospital or other insurance
         (whether funded by actual insurance or self-insured by the Company),
         disability, salary continuation, expense reimbursement and other
         employee benefit policies, plans, programs or arrangements that may now
         exist or any equivalent successor policies, plans,

<PAGE>

         programs or arrangements that may be adopted hereafter by the Company
         providing perquisites, benefits and service credit for benefits at
         least as great as are payable thereunder prior to a Change in
         Control(collectively, Employee Benefits); provided, however, that the
         Employee's rights thereunder shall be governed by the terms thereof and
         shall not be enlarged hereunder or otherwise affected hereby. Subject
         to the proviso in the immediately preceding sentence, if and to the
         extent such perquisites, benefits or service credit for benefits are
         not payable or provided under any such policy, plan, program or
         arrangement as a result of the amendment or termination thereof, then
         the Company shall itself pay or provide therefor. Nothing in this
         Agreement shall preclude improvement or enhancement of any such
         Employee Benefits, provided that no such improvement shall in any way
         diminish any other obligation of the Company under this Agreement.

                  c)       The Company has determined that the amounts payable
         pursuant to this Section 3 constitute reasonable compensation.
         Accordingly, notwithstanding any other provision hereof, unless such
         action would be expressly prohibited by applicable law, if any amount
         paid or payable pursuant to this Section 3 is subject to the excise tax
         imposed by Section 4999 of the Internal Revenue Code of 1986, as
         amended (the Code), the Company will pay to the Employee an additional
         amount in cash equal to the amount necessary to cause the aggregate
         remuneration received by the Employee under this Section 3, including
         such additional cash payment (net of all federal, state and local
         income taxes and all taxes payable as the result of the application of
         Sections 280G and 4999 of the Code) to be equal to the aggregate
         remuneration the Employee would have received under this Section 3,
         excluding such additional payment (net of all federal, state and local
         income taxes), as if Sections 280G and 4999 of the Code (and any
         successor provisions thereto) had not been enacted into law.

         4.       TERMINATION FOLLOWING A CHANGE IN CONTROL.

                  a)       In the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Company during the
         Period of Employment only upon the occurrence of one or more of the
         following events:

                           i)       If the Employee is unable to perform the
                  essential functions of his job (with or without reasonable
                  accommodation) because he has become permanently disabled
                  within the meaning of, and actually begins to receive
                  disability benefits pursuant to, the long-term disability plan
                  in effect for senior executives or, if applicable, employees
                  of the Company immediately prior to the Change in Control; or

                           ii)      For Cause, which for purposes of this
                  Agreement shall mean that, prior to any termination pursuant
                  to Section 4(b) hereof, the Employee shall have committed:

                                    A)       Gross negligence or willful
                           misconduct in connection with his duties or in the
                           course of his employment with the Company;

<PAGE>

                                    B)       an act of fraud, embezzlement or
                           theft in connection with his duties or in the course
                           of his employment with the Company;

                                    C)       intentional wrongful damage to
                           property of the Company;

                                    D)       intentional wrongful disclosure of
                           secret processes or confidential information of the
                           Company;

                                    E)       intentional wrongful engagement in
                           any Competitive Activity; or

                                    F)       an act leading to a conviction of a
                           felony or a misdemeanor involving moral turpitude.

                  For purposes of this Agreement, no act, or failure to act, on
         the part of the Employee shall be deemed intentional if it was due
         primarily to an error in judgment or negligence, but shall be deemed
         intentional only if done, or omitted to be done, by the Employee not in
         good faith and without reasonable belief that his action or omission
         was in the best interest of the Company. Notwithstanding the foregoing,
         the Employee shall not be deemed to have been terminated for Cause
         hereunder unless and until there shall have been delivered to the
         Employee a copy of a resolution duly adopted by the affirmative vote of
         not less than three-quarters of the Board then in office at a meeting
         of the Board called and held for such purpose (after reasonable notice
         to the Employee and an opportunity for the Employee, together with his
         counsel, to be heard before the Board), finding that, in the good faith
         opinion of the Board, the Employee had committed an act set forth above
         in this Section 4(a)(ii) and specifying the particulars thereof in
         detail. Nothing herein shall limit the right of the Employee or his
         beneficiaries to contest the validity or propriety of any such
         determination.

                  b)       in the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Employee during the
         Period of Employment with the right to benefits as provided in Section
         5 hereof upon the occurrence of one or more of the following events:

                           i)       Any termination by the Company of the
                  employment of the Employee for any reason other than for Cause
                  or as a result of the death of the Employee or by reason of
                  the Employee's disability and the actual receipt of disability
                  benefits in accordance with Section 4(a)(i) hereof; or

                           ii)      Termination by the Employee of his
                  employment with the Company upon the occurrence of any of the
                  following events:

                                    A)       A reduction in the aggregate of the
                           Employee's Base Pay and Incentive Pay received from
                           the Company, or the termination of the Employee's
                           rights to any Employee Benefits to which he was
                           entitled immediately prior to the Change in Control
                           or a reduction in scope or value thereof without the
                           prior written consent of the Employee, any of which
                           is not

<PAGE>

                           remedied within 10 calendar days after receipt by the
                           Company of written notice from the Employee of such
                           change, reduction or termination, as the case may be;

                                    B)       The liquidation, dissolution,
                           merger, consolidation or reorganization of the
                           Company or transfer of all or a significant portion
                           of its business and/or assets, unless the successor
                           or successors (by liquidation, merger, consolidation,
                           reorganization or otherwise) to which all or a
                           significant portion of its business and/or assets
                           have been transferred (directly or by operation of
                           law) shall have assumed all duties and obligations of
                           the Company under this Agreement pursuant to Section
                           11 hereof;

                                    C)       The Company requires the Employee
                           to have his principal location of work changed to any
                           location which is in excess of 50 miles from the
                           location thereof immediately prior to the Change of
                           Control or to travel away from his office in the
                           course of discharging his responsibilities or duties
                           hereunder significantly more (in terms of either
                           consecutive days or aggregate days in any calendar
                           year) than was required of him prior to the Change of
                           Control without, in either case, his prior consent;
                           or

                                    D)       Any material breach of this
                           Agreement by the Company or any successor thereto.

                  c)       A termination by the Company pursuant to Section 4(a)
         hereof or by the Employee pursuant to Section 4(b) hereof shall not
         affect any rights which the Employee may have pursuant to any
         agreement, policy, plan, program or arrangement of the Company
         providing Employee Benefits, which rights shall be governed by the
         terms thereof. If this Agreement or the employment of the Employee is
         terminated under circumstances in which the Employee is not entitled to
         any payments under Sections 3 or 5 hereof, the Employee shall have no
         further obligation or liability to the Company hereunder with respect
         to his prior or any future employment by the Company.

         5.       SEVERANCE COMPENSATION.

                  a)       If, following the occurrence of a Change in Control,
         the Company shall terminate the Employee's employment during the Period
         of Employment other than pursuant to Section 4(a) hereof, or if the
         Employee shall terminate his employment pursuant to Section 4(b)
         hereof, the Company shall pay to the Employee the amount specified in
         Section 5(a)(i) hereof within ten business days after the date (the
         Termination Date) that the Employee's employment is terminated (the
         effective date of which shall be the date of termination, or such other
         date that may be specified by the Employee if the termination is
         pursuant to Section 4(b) hereof):

                           i)       In lieu of any further payments to the
                  Employee for periods subsequent to the Termination Date, but
                  without affecting the rights of the Employee referred to in
                  Section 5(b) hereof, a lump sum payment (the Severance
                  Payment) in

<PAGE>

                  an amount equal to the present value (using a discount rate
                  required to be utilized for purposes of computations under
                  Section 280G of the Code or any successor provision thereto,
                  or if no such rate is so required to be used, a rate equal to
                  the then-applicable interest rate prescribed by the Pension
                  Benefit Guarantee Corporation for benefit valuations in
                  connection with non-multiemployer pension plan terminations
                  assuming the immediate commencement of benefit payments (the
                  Discount Rate) of the sum of (A) the Base Pay (at the highest
                  rate in effect during the Term prior to the Termination Date)
                  for one year, plus (B) the Incentive Pay for one year (based
                  upon the greatest amount of Incentive Pay paid or payable to
                  the Employee for any year during the three calendar years
                  preceding the year in which the Termination Date occurs);
                  provided, however, that in no event will the present value (as
                  determined under Section 280G of the Code or any successor
                  provision thereto) of the amount otherwise payable hereunder,
                  when added to the present value (as determined under Section
                  280G of the Code or any successor provision thereto) of any
                  other parachute payments (as that term is defined in Section
                  280G of the Code (without regard to Section 280G(b)(2)(A)(ii)
                  thereof) or any successor provision thereto) from the Company,
                  exceed an amount (the A299% Amount) equal to 299% of the
                  Employee's base amount (as that term is defined in Section
                  280G of the Code or any successor provision thereto) and if
                  the amount otherwise payable hereunder would exceed the 299%
                  Amount, the Severance Payment shall be reduced to the extent
                  necessary so that the aggregate present value determined in
                  the previous clause does not exceed the 299% Amount.

                           ii)      The determination of whether any amount
                  otherwise payable under Section 5(a)(i) causes the 299% Amount
                  to be exceeded shall be made, if requested by the Employee or
                  the Company, by tax counsel selected by the Company and
                  reasonably acceptable to the Employee. The costs of obtaining
                  such determination shall be borne by the Company. The fact
                  that the Employee shall have his right to the Severance
                  Payment reduced as a result of the existence of the
                  limitations contained in this Section 5(a) shall not limit or
                  otherwise affect any rights of the Employee to any Employee
                  Benefit, or other right arising other than pursuant to this
                  Agreement. Without limiting the generality of the foregoing,
                  upon the Employee's termination of employment as provided in
                  this Section 5, the Company shall pay over to him all vested
                  benefits to which he is entitled under and in accordance with
                  the terms of the Company's employee savings, stock ownership,
                  supplemental executive retirement and similar Plans in the
                  event such payments are not otherwise made in accordance with
                  the terms of such plans.

                           iii)     Except to the extent that the payments or
                  benefits pursuant to this Section 5(a)(iii) would result in a
                  reduction of the amount of the Severance Payment because they
                  would exceed the 299% Amount, (A) for the remainder of the
                  Period of Employment the Company shall arrange to provide the
                  Employee with Employee Benefits substantially similar to those
                  which the Employee was receiving or entitled to receive
                  immediately prior to the Termination Date (and if and to the
                  extent that such benefits shall not or cannot be paid or
                  provided under any policy, plan, program or arrangement of the
                  Company solely due to the fact that the Employee is no longer

<PAGE>

                  an officer or employee of the Company, then the Company shall
                  itself pay or provide for the payment to the Employee, his
                  dependents and beneficiaries, such Employee Benefits) and (B)
                  without limiting the generality of the foregoing, the
                  remainder of the Period of Employment shall be considered
                  service with the Company for the purpose of service credits
                  under the Company's retirement income, supplemental executive
                  retirement and other benefit plans of the Company applicable
                  to the Employee or his beneficiaries immediately prior to the
                  Termination Date. Without otherwise limiting the purposes or
                  effect of Section 6 hereof, Employee Benefits payable to the
                  Employee pursuant to this Section 5(a)(iii) by reason of any
                  welfare benefit plan of the Company (as the term welfare
                  benefit plan is defined in Section 3(1) of the Employee
                  Retirement Income Security Act of 1974, as amended) shall be
                  reduced to the extent comparable welfare benefits are actually
                  received by the Employee from another employer during such
                  period following the Employee's Termination Date until the
                  expiration of the Period of Employment.

                           iv)      Notwithstanding any provision of the Section
                  5(a) to the contrary, in the event the benefits intended to be
                  provided to the Employee pursuant to Section 5(a)(iii) hereof
                  are required to be reduced in whole or in part because the
                  value of such Employee Benefits, when added to the amount of
                  the Severance Payment under Section 5(a)(i), would exceed 299%
                  Amount, the Employee shall have the option to elect to
                  receive, in lieu of all or a portion of the Severance Payment
                  provided in Section 5(a)(i) hereof, one or more Employee
                  Benefits, provided that (A) prior to the receipt of any
                  payment under Section 5(a)(i) hereof, the Employee notifies
                  the Company of the Employee Benefit or Employee Benefits so
                  elected to be received, and (B) in no event shall the
                  aggregate present value of the payments in the nature of
                  compensation (as that phrase is used in Section 280G of the
                  Code) received by the Employee as a result of the receipt of
                  such Employee Benefits, when added to the remaining portion of
                  the Severance Payment, if any, to be received by the Employee,
                  exceed the 299% Amount.

                           v)       In addition to all other compensation due to
                  the Employee, the following shall occur immediately following
                  the occurrence of a Change in Control:

                                    A)       all Company stock options held by
                           the Employee prior to a Change in Control shall
                           become fully exercisable, regardless of whether or
                           not the vesting conditions set forth in the relevant
                           stock option agreements have been satisfied in full;
                           and

                                    B)       all restrictions on any restricted
                           Company stock granted to the Employee prior to a
                           Change in Control shall be removed and the stock
                           shall be freely transferable, regardless of whether
                           the conditions set forth in the relevant restricted
                           stock agreements have been satisfied in full.

         b)       Upon written notice given by the Employee to the Company prior
to the receipt of any payment pursuant to Section 5(a) hereof, the Employee, at
his sole option, without reduction to reflect the present value of such amounts
as aforesaid, may elect to have all or any of the Severance

<PAGE>

Payment payable pursuant to Section 5(a)(i) hereof paid to him on a quarterly or
monthly basis during the remainder of the Period of Employment.

         c)       There shall be no right of set-off or counterclaim in respect
of any claim, debt or obligation against any payment to or benefit for the
Employee provided for in this Agreement.

         d)       Without limiting the rights of the Employee at law or in
equity, if the Company fails to make any payment required to be made hereunder
on a timely basis, the Company shall pay interest on the amount thereof at an
annualized rate of interest equal to the then-applicable Discount Rate or, if
lesser, the highest rate allowed by applicable usury laws.

         6.       NO MITIGATION OBLIGATION. The Company hereby acknowledges that
it will be difficult, and may be impossible, for the Employee to find reasonably
comparable employment following the Termination Date. Accordingly, the parties
hereto expressly agree that the payment of the severance compensation by the
Company to the Employee in accordance with the terms of this Agreement will be
liquidated damages, and that the Employee shall not be required to mitigate the
amount of any payment provided for in this Agreement by seeking other employment
or otherwise, nor shall any profits, income, earnings or other benefits from any
source whatsoever create any mitigation, offset, reduction or any other
obligation on the part of the Employee hereunder or otherwise, except as
expressly provided in Section 5(a)(iii) hereof.

         7.       [Reserved]

         8.       LEGAL FEES AND EXPENSES. In the event of a breach of this
Agreement by the Company, it is the intent of the Company that the Employee not
be required to incur the expenses associated with the enforcement of his rights
under this Agreement by litigation or other legal action because the cost and
expense thereof would substantially detract from the benefits intended to be
extended to the Employee hereunder. Accordingly, if the Company fails to comply
with any of its obligations under this Agreement or in the event that the
Company or any other person takes any action to declare this Agreement void or
unenforceable, or institutes any litigation designed to deny, or to recover
from, the Employee the benefits intended to be provided to the Employee
hereunder, the Company irrevocably authorizes the Employee from time to time to
retain counsel of his choice, at the expense of the Company as hereafter
provided, to represent the Employee in connection with the initiation or defense
of any litigation or other legal action, whether by or against the Company or
any Director, officer, shareholder or other person affiliated with the Company,
in any jurisdiction. Notwithstanding any existing or prior attorney-client
relationship between the Company and such counsel, the Company irrevocably
consents to the Employee's entering into an attorney-client relationship with
such counsel (other than Vinson & Elkins L.L.P.), and in that connection the
Company and the Employee agree that a confidential relationship shall exist
between the Employee and such counsel. The Company shall pay or cause to be paid
and shall be solely responsible for any and all attorneys and related fees and
expenses incurred by the Employee as a result of the Company's failure to
perform this Agreement or any provision thereof or as a result of the Company or
any person contesting the validity or enforceability of this Agreement or any
provision thereof as

<PAGE>

aforesaid. If the Company should prevail in any litigation regarding this
Agreement, however, the Company shall not be responsible for any attorneys and
related fees and expenses incurred by Employee in connection with such
litigation.

         9.       EMPLOYMENT RIGHTS. Nothing expressed or implied in this
Agreement shall create any right or duty on the part of the Company or the
Employee to have the Employee remain in the employment of the Company prior to
any Change in Control; provided, however, that any termination of employment of
the Employee or removal of the Employee as an Officer of the Company following
the commencement of any discussion with a third person that ultimately results
in a Change in Control shall be deemed to be a termination or removal of the
Employee after a Change in Control for purposes of this Agreement.

         10.      WITHHOLDING OF TAXES. The Company may withhold from any
amounts payable under this Agreement all federal, state, city or other taxes as
shall be required pursuant to any law or government regulation or ruling.

         11.      SUCCESSORS AND BINDING AGREEMENT.

                  a)       The Company shall require any successor (whether
         direct or indirect, by purchase, merger, consolidation, reorganization
         or otherwise) to all or substantially all of the business and/or assets
         of the Company to execute an agreement pursuant to which the successor
         expressly assumes all of the liabilities and obligations of the Company
         hereunder and agrees to perform this Agreement in the same manner and
         to the same extent the Company would be required to perform if no such
         succession had taken place. This Agreement shall be binding upon and
         inure to the benefit of the Company and any successor to the Company,
         including without limitation any persons acquiring directly or
         indirectly all or substantially all of the business and/or assets of
         the Company whether by purchase, merger, consolidation, reorganization
         or otherwise (and such successor shall thereafter be deemed the Company
         for the purposes of this Agreement), but shall not otherwise be
         assignable, transferable or delegable by the Company.

                  b)       This Agreement shall inure to the benefit of and be
         enforceable by the Employee's personal or legal representatives,
         executors, administrators, successors, heirs, distributees and/or
         legatees.

                  c)       This Agreement is personal in nature and neither of
         the parties hereto shall, without the consent of the other, assign,
         transfer or delegate this Agreement or any rights or obligations
         hereunder except as expressly provided in Section 11(a) hereof. Without
         limiting the generality of the foregoing, the Employee's right to
         receive payments hereunder shall not be assignable, transferable or
         delegable, whether by pledge, creation of a security interest or
         otherwise, other than by a transfer by the Employee's will or by the
         laws of descent and distribution and, in the event of any attempted
         assignment or transfer contrary to this Section 11(c), the Company
         shall have no liability to pay any amount so attempted to be assigned,
         transferred or delegated.

<PAGE>

                  d)       The Company and the Employee recognize that each
         Party will have no adequate remedy at law for breach by the other of
         any of the agreements contained herein and, in the event of any such
         breach, the Company and the Employee hereby agree and consent that the
         other shall be entitled to a decree of specific performance, mandamus
         or other appropriate remedy to enforce performance of this Agreement.

         12.      NOTICE. For all purposes of this Agreement, all communications
provided for herein shall be in writing and shall be deemed to have been duly
given when delivered or three business days after having been mailed by United
States registered or certified mail, return receipt requested, postage prepaid,
addressed to the Company (to the attention of the Secretary of the Company) at
its principal executive office and to the Employee at his principal residence,
or to such other address as any party may have furnished to the other in writing
and in accordance herewith, except that notices of change of address shall be
effective only upon receipt.

         13.      GOVERNING LAW. The validity, interpretation, construction and
performance of this Agreement shall be governed by the laws of the State of
Texas, without giving effect to the principles of conflict of laws of such
State.

         14.      VALIDITY. If any provision of this Agreement or the
application of any provision hereof to any person or circumstances is held
invalid, unenforceable or otherwise illegal, the remainder of this Agreement and
the application of such provision to any other person or circumstances shall not
be affected, and the provision so held to be invalid, unenforceable or otherwise
illegal shall be reformed to the extent (and only to the extent) necessary to
make it enforceable, valid and legal.

         15.      MISCELLANEOUS. No provisions of this Agreement may be
modified, waived or discharged unless such waiver, modification or discharge is
agreed to in writing signed by the Employee and the Company. No waiver by either
party hereto at any time of any breach by the other party hereto or compliance
with any condition or provision of this Agreement to be performed by such other
party shall be deemed a waiver of similar or dissimilar provisions or conditions
at the same or at any prior or subsequent time. No agreements or
representations, oral or otherwise, expressed or implied with respect to the
subject matter hereof have been made by either party which are not set forth
expressly in this Agreement.

         16.      PRIOR AGREEMENTS. This Agreement is voluntarily entered into
and supersedes and takes the place of any prior change in control, severance or
employment agreements between the parties hereto. The parties hereto expressly
agree and hereby declare that any and all prior change in control, severance or
employment agreements between the parties are terminated and of no force or
effect.

         17.      COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original but all of which
together will constitute one and the same agreement.

<PAGE>

         IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
executed and delivered as of the date first above written.

                                         SOUTHWEST BANCORPORATION OF TEXAS, INC.

                                         By:  /s/  Paul B. Murphy
                                         ---------------------------------------

                                         EMPLOYEE:

                                         /s/  George Marshall
                                         ---------------------------------------
<PAGE>

                           CHANGE IN CONTROL AGREEMENT

         This CHANGE IN CONTROL AGREEMENT (Agreement), effective as of January
1, 2000 (the Effective Date), by and between Southwest Bancorporation of Texas,
Inc., a Texas corporation (the Company), and John McWhorter (the Employee);

                              W I T N E S S E T H:

         WHEREAS, the Employee is an officer of the Company or its wholly-owned
subsidiary, Southwest Bank of Texas National Association (the Bank) and has made
and/or is expected to make or continue to make major contributions to the
profitability, growth and financial strength of the Company and the Bank;

         WHEREAS, references herein to the Employee's employment by the Company
shall also mean his or her employment by the Bank, and references herein to
payments of any nature to be made by the Company to the Employee shall mean that
either the Company will make such payments or it will cause the Bank to make
such payments to the Employee;

         WHEREAS, the Company desires to assure itself of both present and
future continuity of management in the event of a Change in Control (as defined
hereafter) and desires to establish certain minimum compensation rights of its
key officers, including the Employee, applicable in the event of a Change in
Control;

         WHEREAS, the Company wishes to ensure that its key officers are not
practically disabled from discharging their duties upon a Change in Control;

         WHEREAS, this Agreement is not intended to alter materially the
compensation and benefits which the Employee could reasonably expect to receive
from the Company or the Bank absent a Change in Control and, accordingly,
although effective and binding as of the date hereof, this Agreement shall
become operative only upon the occurrence of a Change of Control; and

         WHEREAS, the Employee is willing to render services to the Company and
the Bank on the terms and subject to the conditions set forth in this Agreement;

         NOW, THEREFORE, the Company and the Employee agree as follows:

         1.       OPERATION OF AGREEMENT.

                  a)       This Agreement shall be effective and binding as of
         the Effective Date, but, anything in this Agreement to the contrary
         notwithstanding, this Agreement shall not be operative unless and until
         there shall have occurred a Change in Control.
<PAGE>

                  For purposes of this Agreement, a Change in Control shall have
         occurred if at any time during the Term (as that term is hereafter
         defined) any of the following events shall occur:

                           i)       The Company is merged, consolidated or
                  reorganized into or with or sells all or substantially all of
                  its assets to another corporation or other legal person, and
                  as a result of such merger, consolidation, reorganization or
                  sale (A) less than a majority of the combined voting power of
                  the then-outstanding securities of such corporation or person
                  immediately after such transaction are held in the aggregate
                  by the holders of Voting Stock (as that term is hereinafter
                  defined) of the Company immediately prior to such transaction
                  and (B) it is intended that persons serving as Directors of
                  the Company immediately prior to the transaction will
                  constitute none of or less than a majority of the Directors of
                  the other corporation or legal person after consummation of
                  the transaction; or

                           ii)      If during any one (1) year period,
                  individuals who at the beginning of any such period constitute
                  the Directors of the Company cease for any reason to
                  constitute at least a majority thereof, unless the election,
                  or the nomination for election by the Company's shareholders,
                  of each Director of the Company first elected during such
                  period was approved by a vote of at least two-thirds of the
                  Directors of the Company then still in office who were
                  Directors of the Company at the beginning of any such period.

                  b)       Upon occurrence of a Change in Control at any time
         during the Term, this Agreement shall become immediately operative.

                  c)       The period during which this Agreement shall be in
         effect (the Term) shall commence as of the date hereof and shall expire
         as of the later of (i) the close of business on December 31, 2002, and
         (ii) the expiration of the Period of Employment (as that term is
         hereinafter defined); provided, however, that (A) commencing on
         December 31, 2002, and the last day of each of the Company's Fiscal
         Years thereafter, the Term of this Agreement shall automatically be
         extended for an additional year unless, not later than the last day of
         the immediately preceding September, the Company or the Employee shall
         have given notice that it or he, as the case may be, does not wish to
         have the Term extended and (B) subject to Section 9 hereof, if, prior
         to a Change in Control, the Employee ceases for any reason to be an
         employee of the Company, thereupon the Term shall be deemed to have
         expired and this Agreement shall immediately terminate and be of no
         further effect.

         2.       EMPLOYMENT; PERIOD OF EMPLOYMENT.

                  a)       Subject to the terms and conditions of this
         Agreement, upon the occurrence of a Change in Control, the Company
         shall continue the Employee in its employ and the Employee shall remain
         in the employ of the Company for the period set forth in Section 2(b)
         hereof (the Period of Employment). Throughout the Period of Employment,
         the Employee shall devote substantially all of his time during normal
         business hours (subject to vacations, sick leave and other absences in
         accordance with the policies of the Company as in effect for

<PAGE>

         senior executives immediately prior to the Change in Control) to the
         business and affairs of the Company, but nothing in this Agreement
         shall preclude the Employee from devoting reasonable periods of time
         during normal business hours to (i) serving as a director, trustee or
         member of or participant in any organization or business so long as
         such organization or business is not engaged, directly or indirectly,
         in the business of commercial banking in competition with the business
         of the Company, (ii) engaging in charitable and community activities,
         or (iii) managing his personal investments.

                  b)       The Period of Employment shall commence on the date
         of an occurrence of a Change in Control and, subject only to the
         provisions of Section 4 hereof, shall continue until the earlier of (i)
         the expiration of the second anniversary of the occurrence of the
         Change in Control or (ii) the Employee's death.

         3.       COMPENSATION DURING PERIOD OF EMPLOYMENT.

                  a)       Upon the occurrence of a Change in Control, the
         Employee shall receive during the Period of Employment (i) annual base
         salary at a rate not less than the Employees annual fixed or base
         compensation payable monthly or otherwise as in effect for senior
         executives of the Company immediately prior to the occurrence of a
         Change in Control or such higher rate as may be determined from time to
         time by the Board of Directors of the Company (the Board) or the
         Compensation Committee thereof (the Committee) (which base salary at
         such rate is herein referred to as Base Pay) and (ii) an annual cash
         bonus in an amount determined for the Employee in accordance with the
         Company's incentive compensation plan or plans in effect at the time of
         the Change in Control or in accordance with any bonus, incentive,
         profit-sharing, performance, discretionary pay or similar policy, plan,
         program or arrangement of the Company or any successor thereto
         providing benefits at least as great as the benefits payable thereunder
         prior to the Change in Control (Incentive Pay); provided, however, that
         nothing herein shall preclude a change in the mix between Base Pay and
         Incentive Pay so long as the aggregate cash compensation received by
         the Employee in any one calendar year is not reduced in connection
         therewith or as a result thereof and, provided further, however, that
         in no event shall any increase in the Employee's aggregate cash
         compensation or any portion thereof in any way diminish any other
         obligation of the Company under this Agreement.

                  b)       For his service pursuant to Section 2(a) hereof,
         during the Period of Employment the Employee shall, if and on the same
         basis as he participated therein immediately prior to the Change in
         Control, be a full participant in, and shall be entitled to the
         perquisites, benefits and service credit for benefits as provided under
         any and all employee retirement income and welfare benefit policies,
         plans, programs or arrangements in which senior executives of the
         Company participate, including without limitation any stock option,
         stock purchase, stock appreciation, savings, pension, supplemental
         executive retirement or other retirement income or welfare benefit,
         deferred compensation, incentive compensation, group and/or executive
         life, accident, health, dental, medical/hospital or other insurance
         (whether funded by actual insurance or self-insured by the Company),
         disability, salary continuation, expense reimbursement and other
         employee benefit policies, plans, programs or arrangements that may now
         exist or any equivalent successor policies, plans,

<PAGE>

         programs or arrangements that may be adopted hereafter by the Company
         providing perquisites, benefits and service credit for benefits at
         least as great as are payable thereunder prior to a Change in
         Control(collectively, Employee Benefits); provided, however, that the
         Employee's rights thereunder shall be governed by the terms thereof and
         shall not be enlarged hereunder or otherwise affected hereby. Subject
         to the proviso in the immediately preceding sentence, if and to the
         extent such perquisites, benefits or service credit for benefits are
         not payable or provided under any such policy, plan, program or
         arrangement as a result of the amendment or termination thereof, then
         the Company shall itself pay or provide therefor. Nothing in this
         Agreement shall preclude improvement or enhancement of any such
         Employee Benefits, provided that no such improvement shall in any way
         diminish any other obligation of the Company under this Agreement.

                  c)       The Company has determined that the amounts payable
         pursuant to this Section 3 constitute reasonable compensation.
         Accordingly, notwithstanding any other provision hereof, unless such
         action would be expressly prohibited by applicable law, if any amount
         paid or payable pursuant to this Section 3 is subject to the excise tax
         imposed by Section 4999 of the Internal Revenue Code of 1986, as
         amended (the Code), the Company will pay to the Employee an additional
         amount in cash equal to the amount necessary to cause the aggregate
         remuneration received by the Employee under this Section 3, including
         such additional cash payment (net of all federal, state and local
         income taxes and all taxes payable as the result of the application of
         Sections 280G and 4999 of the Code) to be equal to the aggregate
         remuneration the Employee would have received under this Section 3,
         excluding such additional payment (net of all federal, state and local
         income taxes), as if Sections 280G and 4999 of the Code (and any
         successor provisions thereto) had not been enacted into law.

         4.       TERMINATION FOLLOWING A CHANGE IN CONTROL.

                  a)       In the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Company during the
         Period of Employment only upon the occurrence of one or more of the
         following events:

                           i)       If the Employee is unable to perform the
                  essential functions of his job (with or without reasonable
                  accommodation) because he has become permanently disabled
                  within the meaning of, and actually begins to receive
                  disability benefits pursuant to, the long-term disability plan
                  in effect for senior executives or, if applicable, employees
                  of the Company immediately prior to the Change in Control; or

                           ii)      For Cause, which for purposes of this
                  Agreement shall mean that, prior to any termination pursuant
                  to Section 4(b) hereof, the Employee shall have committed:

                                    A)       Gross negligence or willful
                           misconduct in connection with his duties or in the
                           course of his employment with the Company;

<PAGE>

                                    B)       an act of fraud, embezzlement or
                           theft in connection with his duties or in the course
                           of his employment with the Company;

                                    C)       intentional wrongful damage to
                           property of the Company;

                                    D)       intentional wrongful disclosure of
                           secret processes or confidential information of the
                           Company;

                                    E)       intentional wrongful engagement in
                           any Competitive Activity; or

                                    F)       an act leading to a conviction of a
                           felony or a misdemeanor involving moral turpitude.

                  For purposes of this Agreement, no act, or failure to act, on
         the part of the Employee shall be deemed intentional if it was due
         primarily to an error in judgment or negligence, but shall be deemed
         intentional only if done, or omitted to be done, by the Employee not in
         good faith and without reasonable belief that his action or omission
         was in the best interest of the Company. Notwithstanding the foregoing,
         the Employee shall not be deemed to have been terminated for Cause
         hereunder unless and until there shall have been delivered to the
         Employee a copy of a resolution duly adopted by the affirmative vote of
         not less than three-quarters of the Board then in office at a meeting
         of the Board called and held for such purpose (after reasonable notice
         to the Employee and an opportunity for the Employee, together with his
         counsel, to be heard before the Board), finding that, in the good faith
         opinion of the Board, the Employee had committed an act set forth above
         in this Section 4(a)(ii) and specifying the particulars thereof in
         detail. Nothing herein shall limit the right of the Employee or his
         beneficiaries to contest the validity or propriety of any such
         determination.

                  b)       in the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Employee during the
         Period of Employment with the right to benefits as provided in Section
         5 hereof upon the occurrence of one or more of the following events:

                           i)       Any termination by the Company of the
                  employment of the Employee for any reason other than for Cause
                  or as a result of the death of the Employee or by reason of
                  the Employee's disability and the actual receipt of disability
                  benefits in accordance with Section 4(a)(i) hereof; or

                           ii)      Termination by the Employee of his
                  employment with the Company upon the occurrence of any of the
                  following events:

                                    A)       A reduction in the aggregate of the
                           Employee's Base Pay and Incentive Pay received from
                           the Company, or the termination of the Employee's
                           rights to any Employee Benefits to which he was
                           entitled immediately prior to the Change in Control
                           or a reduction in scope or value thereof without the
                           prior written consent of the Employee, any of which
                           is not

<PAGE>

                           remedied within 10 calendar days after receipt by the
                           Company of written notice from the Employee of such
                           change, reduction or termination, as the case may be;

                                    B)       The liquidation, dissolution,
                           merger, consolidation or reorganization of the
                           Company or transfer of all or a significant portion
                           of its business and/or assets, unless the successor
                           or successors (by liquidation, merger, consolidation,
                           reorganization or otherwise) to which all or a
                           significant portion of its business and/or assets
                           have been transferred (directly or by operation of
                           law) shall have assumed all duties and obligations of
                           the Company under this Agreement pursuant to Section
                           11 hereof;

                                    C)       The Company requires the Employee
                           to have his principal location of work changed to any
                           location which is in excess of 50 miles from the
                           location thereof immediately prior to the Change of
                           Control or to travel away from his office in the
                           course of discharging his responsibilities or duties
                           hereunder significantly more (in terms of either
                           consecutive days or aggregate days in any calendar
                           year) than was required of him prior to the Change of
                           Control without, in either case, his prior consent;
                           or

                                    D)       Any material breach of this
                           Agreement by the Company or any successor thereto.

                  c)       A termination by the Company pursuant to Section 4(a)
         hereof or by the Employee pursuant to Section 4(b) hereof shall not
         affect any rights which the Employee may have pursuant to any
         agreement, policy, plan, program or arrangement of the Company
         providing Employee Benefits, which rights shall be governed by the
         terms thereof. If this Agreement or the employment of the Employee is
         terminated under circumstances in which the Employee is not entitled to
         any payments under Sections 3 or 5 hereof, the Employee shall have no
         further obligation or liability to the Company hereunder with respect
         to his prior or any future employment by the Company.

         5.       SEVERANCE COMPENSATION.

                  a)       If, following the occurrence of a Change in Control,
         the Company shall terminate the Employee's employment during the Period
         of Employment other than pursuant to Section 4(a) hereof, or if the
         Employee shall terminate his employment pursuant to Section 4(b)
         hereof, the Company shall pay to the Employee the amount specified in
         Section 5(a)(i) hereof within ten business days after the date (the
         Termination Date) that the Employee's employment is terminated (the
         effective date of which shall be the date of termination, or such other
         date that may be specified by the Employee if the termination is
         pursuant to Section 4(b) hereof):

                           i)       In lieu of any further payments to the
                  Employee for periods subsequent to the Termination Date, but
                  without affecting the rights of the Employee referred to in
                  Section 5(b) hereof, a lump sum payment (the Severance
                  Payment) in

<PAGE>

                  an amount equal to the present value (using a discount rate
                  required to be utilized for purposes of computations under
                  Section 280G of the Code or any successor provision thereto,
                  or if no such rate is so required to be used, a rate equal to
                  the then-applicable interest rate prescribed by the Pension
                  Benefit Guarantee Corporation for benefit valuations in
                  connection with non-multiemployer pension plan terminations
                  assuming the immediate commencement of benefit payments (the
                  Discount Rate) of the sum of (A) the Base Pay (at the highest
                  rate in effect during the Term prior to the Termination Date)
                  for one year, plus (B) the Incentive Pay for one year (based
                  upon the greatest amount of Incentive Pay paid or payable to
                  the Employee for any year during the three calendar years
                  preceding the year in which the Termination Date occurs);
                  provided, however, that in no event will the present value (as
                  determined under Section 280G of the Code or any successor
                  provision thereto) of the amount otherwise payable hereunder,
                  when added to the present value (as determined under Section
                  280G of the Code or any successor provision thereto) of any
                  other parachute payments (as that term is defined in Section
                  280G of the Code (without regard to Section 280G(b)(2)(A)(ii)
                  thereof) or any successor provision thereto) from the Company,
                  exceed an amount (the A299% Amount) equal to 299% of the
                  Employee's base amount (as that term is defined in Section
                  280G of the Code or any successor provision thereto) and if
                  the amount otherwise payable hereunder would exceed the 299%
                  Amount, the Severance Payment shall be reduced to the extent
                  necessary so that the aggregate present value determined in
                  the previous clause does not exceed the 299% Amount.

                           ii)      The determination of whether any amount
                  otherwise payable under Section 5(a)(i) causes the 299% Amount
                  to be exceeded shall be made, if requested by the Employee or
                  the Company, by tax counsel selected by the Company and
                  reasonably acceptable to the Employee. The costs of obtaining
                  such determination shall be borne by the Company. The fact
                  that the Employee shall have his right to the Severance
                  Payment reduced as a result of the existence of the
                  limitations contained in this Section 5(a) shall not limit or
                  otherwise affect any rights of the Employee to any Employee
                  Benefit, or other right arising other than pursuant to this
                  Agreement. Without limiting the generality of the foregoing,
                  upon the Employee's termination of employment as provided in
                  this Section 5, the Company shall pay over to him all vested
                  benefits to which he is entitled under and in accordance with
                  the terms of the Company's employee savings, stock ownership,
                  supplemental executive retirement and similar Plans in the
                  event such payments are not otherwise made in accordance with
                  the terms of such plans.

                           iii)     Except to the extent that the payments or
                  benefits pursuant to this Section 5(a)(iii) would result in a
                  reduction of the amount of the Severance Payment because they
                  would exceed the 299% Amount, (A) for the remainder of the
                  Period of Employment the Company shall arrange to provide the
                  Employee with Employee Benefits substantially similar to those
                  which the Employee was receiving or entitled to receive
                  immediately prior to the Termination Date (and if and to the
                  extent that such benefits shall not or cannot be paid or
                  provided under any policy, plan, program or arrangement of the
                  Company solely due to the fact that the Employee is no longer

<PAGE>

                  an officer or employee of the Company, then the Company shall
                  itself pay or provide for the payment to the Employee, his
                  dependents and beneficiaries, such Employee Benefits) and (B)
                  without limiting the generality of the foregoing, the
                  remainder of the Period of Employment shall be considered
                  service with the Company for the purpose of service credits
                  under the Company's retirement income, supplemental executive
                  retirement and other benefit plans of the Company applicable
                  to the Employee or his beneficiaries immediately prior to the
                  Termination Date. Without otherwise limiting the purposes or
                  effect of Section 6 hereof, Employee Benefits payable to the
                  Employee pursuant to this Section 5(a)(iii) by reason of any
                  welfare benefit plan of the Company (as the term welfare
                  benefit plan is defined in Section 3(1) of the Employee
                  Retirement Income Security Act of 1974, as amended) shall be
                  reduced to the extent comparable welfare benefits are actually
                  received by the Employee from another employer during such
                  period following the Employee's Termination Date until the
                  expiration of the Period of Employment.

                           iv)      Notwithstanding any provision of the Section
                  5(a) to the contrary, in the event the benefits intended to be
                  provided to the Employee pursuant to Section 5(a)(iii) hereof
                  are required to be reduced in whole or in part because the
                  value of such Employee Benefits, when added to the amount of
                  the Severance Payment under Section 5(a)(i), would exceed 299%
                  Amount, the Employee shall have the option to elect to
                  receive, in lieu of all or a portion of the Severance Payment
                  provided in Section 5(a)(i) hereof, one or more Employee
                  Benefits, provided that (A) prior to the receipt of any
                  payment under Section 5(a)(i) hereof, the Employee notifies
                  the Company of the Employee Benefit or Employee Benefits so
                  elected to be received, and (B) in no event shall the
                  aggregate present value of the payments in the nature of
                  compensation (as that phrase is used in Section 280G of the
                  Code) received by the Employee as a result of the receipt of
                  such Employee Benefits, when added to the remaining portion of
                  the Severance Payment, if any, to be received by the Employee,
                  exceed the 299% Amount.

                           v)       In addition to all other compensation due to
                  the Employee, the following shall occur immediately following
                  the occurrence of a Change in Control:

                                    A)       all Company stock options held by
                           the Employee prior to a Change in Control shall
                           become fully exercisable, regardless of whether or
                           not the vesting conditions set forth in the relevant
                           stock option agreements have been satisfied in full;
                           and

                                    B)       all restrictions on any restricted
                           Company stock granted to the Employee prior to a
                           Change in Control shall be removed and the stock
                           shall be freely transferable, regardless of whether
                           the conditions set forth in the relevant restricted
                           stock agreements have been satisfied in full.

                  b)       Upon written notice given by the Employee to the
         Company prior to the receipt of any payment pursuant to Section 5(a)
         hereof, the Employee, at his sole option, without reduction to reflect
         the present value of such amounts as aforesaid, may elect to have all
         or any of the Severance

<PAGE>

         Payment payable pursuant to Section 5(a)(i) hereof paid to him on a
         quarterly or monthly basis during the remainder of the Period of
         Employment.

                  c)       There shall be no right of set-off or counterclaim in
         respect of any claim, debt or obligation against any payment to or
         benefit for the Employee provided for in this Agreement.

                  d)       Without limiting the rights of the Employee at law or
         in equity, if the Company fails to make any payment required to be made
         hereunder on a timely basis, the Company shall pay interest on the
         amount thereof at an annualized rate of interest equal to the
         then-applicable Discount Rate or, if lesser, the highest rate allowed
         by applicable usury laws.

         6.       NO MITIGATION OBLIGATION. The Company hereby acknowledges that
it will be difficult, and may be impossible, for the Employee to find reasonably
comparable employment following the Termination Date. Accordingly, the parties
hereto expressly agree that the payment of the severance compensation by the
Company to the Employee in accordance with the terms of this Agreement will be
liquidated damages, and that the Employee shall not be required to mitigate the
amount of any payment provided for in this Agreement by seeking other employment
or otherwise, nor shall any profits, income, earnings or other benefits from any
source whatsoever create any mitigation, offset, reduction or any other
obligation on the part of the Employee hereunder or otherwise, except as
expressly provided in Section 5(a)(iii) hereof.

         7.       [Reserved]

         8.       LEGAL FEES AND EXPENSES. In the event of a breach of this
Agreement by the Company, it is the intent of the Company that the Employee not
be required to incur the expenses associated with the enforcement of his rights
under this Agreement by litigation or other legal action because the cost and
expense thereof would substantially detract from the benefits intended to be
extended to the Employee hereunder. Accordingly, if the Company fails to comply
with any of its obligations under this Agreement or in the event that the
Company or any other person takes any action to declare this Agreement void or
unenforceable, or institutes any litigation designed to deny, or to recover
from, the Employee the benefits intended to be provided to the Employee
hereunder, the Company irrevocably authorizes the Employee from time to time to
retain counsel of his choice, at the expense of the Company as hereafter
provided, to represent the Employee in connection with the initiation or defense
of any litigation or other legal action, whether by or against the Company or
any Director, officer, shareholder or other person affiliated with the Company,
in any jurisdiction. Notwithstanding any existing or prior attorney-client
relationship between the Company and such counsel, the Company irrevocably
consents to the Employee's entering into an attorney-client relationship with
such counsel (other than Vinson & Elkins L.L.P.), and in that connection the
Company and the Employee agree that a confidential relationship shall exist
between the Employee and such counsel. The Company shall pay or cause to be paid
and shall be solely responsible for any and all attorneys and related fees and
expenses incurred by the Employee as a result of the Company's failure to
perform this Agreement or any provision thereof or as a result of the Company or
any person contesting the validity or enforceability of this Agreement or any
provision thereof as

<PAGE>

aforesaid. If the Company should prevail in any litigation regarding this
Agreement, however, the Company shall not be responsible for any attorneys and
related fees and expenses incurred by Employee in connection with such
litigation.

         9.       EMPLOYMENT RIGHTS. Nothing expressed or implied in this
Agreement shall create any right or duty on the part of the Company or the
Employee to have the Employee remain in the employment of the Company prior to
any Change in Control; provided, however, that any termination of employment of
the Employee or removal of the Employee as an Officer of the Company following
the commencement of any discussion with a third person that ultimately results
in a Change in Control shall be deemed to be a termination or removal of the
Employee after a Change in Control for purposes of this Agreement.

         10.      WITHHOLDING OF TAXES. The Company may withhold from any
amounts payable under this Agreement all federal, state, city or other taxes as
shall be required pursuant to any law or government regulation or ruling.

         11.      SUCCESSORS AND BINDING AGREEMENT.

                  a)       The Company shall require any successor (whether
         direct or indirect, by purchase, merger, consolidation, reorganization
         or otherwise) to all or substantially all of the business and/or assets
         of the Company to execute an agreement pursuant to which the successor
         expressly assumes all of the liabilities and obligations of the Company
         hereunder and agrees to perform this Agreement in the same manner and
         to the same extent the Company would be required to perform if no such
         succession had taken place. This Agreement shall be binding upon and
         inure to the benefit of the Company and any successor to the Company,
         including without limitation any persons acquiring directly or
         indirectly all or substantially all of the business and/or assets of
         the Company whether by purchase, merger, consolidation, reorganization
         or otherwise (and such successor shall thereafter be deemed the Company
         for the purposes of this Agreement), but shall not otherwise be
         assignable, transferable or delegable by the Company.

                  b)       This Agreement shall inure to the benefit of and be
         enforceable by the Employee's personal or legal representatives,
         executors, administrators, successors, heirs, distributees and/or
         legatees.

                  c)       This Agreement is personal in nature and neither of
         the parties hereto shall, without the consent of the other, assign,
         transfer or delegate this Agreement or any rights or obligations
         hereunder except as expressly provided in Section 11(a) hereof. Without
         limiting the generality of the foregoing, the Employee's right to
         receive payments hereunder shall not be assignable, transferable or
         delegable, whether by pledge, creation of a security interest or
         otherwise, other than by a transfer by the Employee's will or by the
         laws of descent and distribution and, in the event of any attempted
         assignment or transfer contrary to this Section 11(c), the Company
         shall have no liability to pay any amount so attempted to be assigned,
         transferred or delegated.

<PAGE>

                  d)       The Company and the Employee recognize that each
         Party will have no adequate remedy at law for breach by the other of
         any of the agreements contained herein and, in the event of any such
         breach, the Company and the Employee hereby agree and consent that the
         other shall be entitled to a decree of specific performance, mandamus
         or other appropriate remedy to enforce performance of this Agreement.

         12.      NOTICE. For all purposes of this Agreement, all communications
provided for herein shall be in writing and shall be deemed to have been duly
given when delivered or three business days after having been mailed by United
States registered or certified mail, return receipt requested, postage prepaid,
addressed to the Company (to the attention of the Secretary of the Company) at
its principal executive office and to the Employee at his principal residence,
or to such other address as any party may have furnished to the other in writing
and in accordance herewith, except that notices of change of address shall be
effective only upon receipt.

         13.      GOVERNING LAW. The validity, interpretation, construction and
performance of this Agreement shall be governed by the laws of the State of
Texas, without giving effect to the principles of conflict of laws of such
State.

         14.      VALIDITY. If any provision of this Agreement or the
application of any provision hereof to any person or circumstances is held
invalid, unenforceable or otherwise illegal, the remainder of this Agreement and
the application of such provision to any other person or circumstances shall not
be affected, and the provision so held to be invalid, unenforceable or otherwise
illegal shall be reformed to the extent (and only to the extent) necessary to
make it enforceable, valid and legal.

         15.      MISCELLANEOUS. No provisions of this Agreement may be
modified, waived or discharged unless such waiver, modification or discharge is
agreed to in writing signed by the Employee and the Company. No waiver by either
party hereto at any time of any breach by the other party hereto or compliance
with any condition or provision of this Agreement to be performed by such other
party shall be deemed a waiver of similar or dissimilar provisions or conditions
at the same or at any prior or subsequent time. No agreements or
representations, oral or otherwise, expressed or implied with respect to the
subject matter hereof have been made by either party which are not set forth
expressly in this Agreement.

         16.      PRIOR AGREEMENTS. This Agreement is voluntarily entered into
and supersedes and takes the place of any prior change in control, severance or
employment agreements between the parties hereto. The parties hereto expressly
agree and hereby declare that any and all prior change in control, severance or
employment agreements between the parties are terminated and of no force or
effect.

         17.      COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original but all of which
together will constitute one and the same agreement.

<PAGE>

         IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
executed and delivered as of the date first above written.

                                    SOUTHWEST BANCORPORATION OF TEXAS, INC.

                                    By: /s/ Paul B. Murphy
                                    --------------------------------------

                                    EMPLOYEE:

                                    /s/ John McWhorter
                                    --------------------------------------<PAGE>

                                                                   EXHIBIT 10.10

                           CHANGE IN CONTROL AGREEMENT

         This CHANGE IN CONTROL AGREEMENT (Agreement), effective as of January
1, 2001 (the Effective Date), by and between Southwest Bancorporation of Texas,
Inc., a Texas corporation (the Company), and Dale Andreas (the Executive);

                              W I T N E S S E T H:

         WHEREAS, the Employee is an officer of the Company or its wholly-owned
subsidiary, Southwest Bank of Texas National Association (the Bank) and has made
and/or is expected to make or continue to make major contributions to the
profitability, growth and financial strength of the Company and the Bank;

         WHEREAS, references herein to the Employee's employment by the Company
shall also mean his or her employment by the Bank, and references herein to
payments of any nature to be made by the Company to the Employee shall mean that
either the Company will make such payments or it will cause the Bank to make
such payments to the Employee;

         WHEREAS, the Company desires to assure itself of both present and
future continuity of management in the event of a Change in Control (as defined
hereafter) and desires to establish certain minimum compensation rights of its
key officers, including the Employee, applicable in the event of a Change in
Control;

         WHEREAS, the Company wishes to ensure that its key officers are not
practically disabled from discharging their duties upon a Change in Control;

         WHEREAS, this Agreement is not intended to alter materially the
compensation and benefits which the Employee could reasonably expect to receive
from the Company or the Bank absent a Change in Control and, accordingly,
although effective and binding as of the date hereof, this Agreement shall
become operative only upon the occurrence of a Change of Control; and

         WHEREAS, the Employee is willing to render services to the Company and
the Bank on the terms and subject to the conditions set forth in this Agreement;

         NOW, THEREFORE, the Company and the Employee agree as follows:

         1.       OPERATION OF AGREEMENT.

                  a)       This Agreement shall be effective and binding as of
         the Effective Date, but, anything in this Agreement to the contrary
         notwithstanding, this Agreement shall not be operative unless and until
         there shall have occurred a Change in Control.
<PAGE>

                  For purposes of this Agreement, a Change in Control shall have
         occurred if at any time during the Term (as that term is hereafter
         defined) any of the following events shall occur:

                           i)       The Company is merged, consolidated or
                  reorganized into or with or sells all or substantially all of
                  its assets to another corporation or other legal person, and
                  as a result of such merger, consolidation, reorganization or
                  sale (A) less than a majority of the combined voting power of
                  the then-outstanding securities of such corporation or person
                  immediately after such transaction are held in the aggregate
                  by the holders of Voting Stock (as that term is hereinafter
                  defined) of the Company immediately prior to such transaction
                  and (B) it is intended that persons serving as Directors of
                  the Company immediately prior to the transaction will
                  constitute none of or less than a majority of the Directors of
                  the other corporation or legal person after consummation of
                  the transaction; or

                           ii)      If during any one (1) year period,
                  individuals who at the beginning of any such period constitute
                  the Directors of the Company cease for any reason to
                  constitute at least a majority thereof, unless the election,
                  or the nomination for election by the Company's shareholders,
                  of each Director of the Company first elected during such
                  period was approved by a vote of at least two-thirds of the
                  Directors of the Company then still in office who were
                  Directors of the Company at the beginning of any such period.

                  b)       Upon occurrence of a Change in Control at any time
         during the Term, this Agreement shall become immediately operative.

                  c)       The period during which this Agreement shall be in
         effect (the Term) shall commence as of the date hereof and shall expire
         as of the later of (i) the close of business on December 31, 2002, and
         (ii) the expiration of the Period of Employment (as that term is
         hereinafter defined); provided, however, that (A) commencing on
         December 31, 2002, and the last day of each of the Company's Fiscal
         Years thereafter, the Term of this Agreement shall automatically be
         extended for an additional year unless, not later than the last day of
         the immediately preceding September, the Company or the Employee shall
         have given notice that it or he, as the case may be, does not wish to
         have the Term extended and (B) subject to Section 9 hereof, if, prior
         to a Change in Control, the Employee ceases for any reason to be an
         employee of the Company, thereupon the Term shall be deemed to have
         expired and this Agreement shall immediately terminate and be of no
         further effect.

         2.       EMPLOYMENT; PERIOD OF EMPLOYMENT.

                  a)       Subject to the terms and conditions of this
         Agreement, upon the occurrence of a Change in Control, the Company
         shall continue the Employee in its employ and the Employee shall remain
         in the employ of the Company for the period set forth in Section 2(b)
         hereof (the Period of Employment). Throughout the Period of Employment,
         the Employee shall devote substantially all of his time during normal
         business hours (subject to vacations, sick leave and other absences in
         accordance with the

<PAGE>

         policies of the Company as in effect for senior executives immediately
         prior to the Change in Control) to the business and affairs of the
         Company, but nothing in this Agreement shall preclude the Employee from
         devoting reasonable periods of time during normal business hours to (i)
         serving as a director, trustee or member of or participant in any
         organization or business so long as such organization or business is
         not engaged, directly or indirectly, in the business of commercial
         banking in competition with the business of the Company, (ii) engaging
         in charitable and community activities, or (iii) managing his personal
         investments.

                  b)       The Period of Employment shall commence on the date
         of an occurrence of a Change in Control and, subject only to the
         provisions of Section 4 hereof, shall continue until the earlier of (i)
         the expiration of the second anniversary of the occurrence of the
         Change in Control or (ii) the Employee's death.

         3.       COMPENSATION DURING PERIOD OF EMPLOYMENT.

                  a)       Upon the occurrence of a Change in Control, the
         Employee shall receive during the Period of Employment (i) annual base
         salary at a rate not less than the Employees annual fixed or base
         compensation payable monthly or otherwise as in effect for senior
         executives of the Company immediately prior to the occurrence of a
         Change in Control or such higher rate as may be determined from time to
         time by the Board of Directors of the Company (the Board) or the
         Compensation Committee thereof (the Committee) (which base salary at
         such rate is herein referred to as Base Pay) and (ii) an annual cash
         bonus in an amount determined for the Employee in accordance with the
         Company's incentive compensation plan or plans in effect at the time of
         the Change in Control or in accordance with any bonus, incentive,
         profit-sharing, performance, discretionary pay or similar policy, plan,
         program or arrangement of the Company or any successor thereto
         providing benefits at least as great as the benefits payable thereunder
         prior to the Change in Control (Incentive Pay); provided, however, that
         nothing herein shall preclude a change in the mix between Base Pay and
         Incentive Pay so long as the aggregate cash compensation received by
         the Employee in any one calendar year is not reduced in connection
         therewith or as a result thereof and, provided further, however, that
         in no event shall any increase in the Employee's aggregate cash
         compensation or any portion thereof in any way diminish any other
         obligation of the Company under this Agreement.

                  b)       For his service pursuant to Section 2(a) hereof,
         during the Period of Employment the Employee shall, if and on the same
         basis as he participated therein immediately prior to the Change in
         Control, be a full participant in, and shall be entitled to the
         perquisites, benefits and service credit for benefits as provided under
         any and all employee retirement income and welfare benefit policies,
         plans, programs or arrangements in which senior executives of the
         Company participate, including without limitation any stock option,
         stock purchase, stock appreciation, savings, pension, supplemental
         executive retirement or other retirement income or welfare benefit,
         deferred compensation, incentive compensation, group and/or executive
         life, accident, health, dental, medical/hospital or other insurance
         (whether funded by actual insurance or self-insured by the Company),
         disability, salary continuation, expense reimbursement and

<PAGE>

         other employee benefit policies, plans, programs or arrangements that
         may now exist or any equivalent successor policies, plans, programs or
         arrangements that may be adopted hereafter by the Company providing
         perquisites, benefits and service credit for benefits at least as great
         as are payable thereunder prior to a Change in Control(collectively,
         Employee Benefits); provided, however, that the Employee's rights
         thereunder shall be governed by the terms thereof and shall not be
         enlarged hereunder or otherwise affected hereby. Subject to the proviso
         in the immediately preceding sentence, if and to the extent such
         perquisites, benefits or service credit for benefits are not payable or
         provided under any such policy, plan, program or arrangement as a
         result of the amendment or termination thereof, then the Company shall
         itself pay or provide therefor. Nothing in this Agreement shall
         preclude improvement or enhancement of any such Employee Benefits,
         provided that no such improvement shall in any way diminish any other
         obligation of the Company under this Agreement.

                  c)       The Company has determined that the amounts payable
         pursuant to this Section 3 constitute reasonable compensation.
         Accordingly, notwithstanding any other provision hereof, unless such
         action would be expressly prohibited by applicable law, if any amount
         paid or payable pursuant to this Section 3 is subject to the excise tax
         imposed by Section 4999 of the Internal Revenue Code of 1986, as
         amended (the Code), the Company will pay to the Employee an additional
         amount in cash equal to the amount necessary to cause the aggregate
         remuneration received by the Employee under this Section 3, including
         such additional cash payment (net of all federal, state and local
         income taxes and all taxes payable as the result of the application of
         Sections 280G and 4999 of the Code) to be equal to the aggregate
         remuneration the Employee would have received under this Section 3,
         excluding such additional payment (net of all federal, state and local
         income taxes), as if Sections 280G and 4999 of the Code (and any
         successor provisions thereto) had not been enacted into law.

         4.       TERMINATION FOLLOWING A CHANGE IN CONTROL.

                  a)       In the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Company during the
         Period of Employment only upon the occurrence of one or more of the
         following events:

                           i)       If the Employee is unable to perform the
                  essential functions of his job (with or without reasonable
                  accommodation) because he has become permanently disabled
                  within the meaning of, and actually begins to receive
                  disability benefits pursuant to, the long-term disability plan
                  in effect for senior executives or, if applicable, employees
                  of the Company immediately prior to the Change in Control; or

                           ii)      For Cause, which for purposes of this
                  Agreement shall mean that, prior to any termination pursuant
                  to Section 4(b) hereof, the Employee shall have committed:

                                    A)       Gross negligence or willful
                           misconduct in connection with his duties or in the
                           course of his employment with the Company;

<PAGE>

                                    B)       an act of fraud, embezzlement or
                           theft in connection with his duties or in the course
                           of his employment with the Company;

                                    C)       intentional wrongful damage to
                           property of the Company;

                                    D)       intentional wrongful disclosure of
                           secret processes or confidential information of the
                           Company;

                                    E)       intentional wrongful engagement in
                           any Competitive Activity; or

                                    F)       an act leading to a conviction of a
                           felony or a misdemeanor involving moral turpitude.

                  For purposes of this Agreement, no act, or failure to act, on
         the part of the Employee shall be deemed intentional if it was due
         primarily to an error in judgment or negligence, but shall be deemed
         intentional only if done, or omitted to be done, by the Employee not in
         good faith and without reasonable belief that his action or omission
         was in the best interest of the Company. Notwithstanding the foregoing,
         the Employee shall not be deemed to have been terminated for Cause
         hereunder unless and until there shall have been delivered to the
         Employee a copy of a resolution duly adopted by the affirmative vote of
         not less than three-quarters of the Board then in office at a meeting
         of the Board called and held for such purpose (after reasonable notice
         to the Employee and an opportunity for the Employee, together with his
         counsel, to be heard before the Board), finding that, in the good faith
         opinion of the Board, the Employee had committed an act set forth above
         in this Section 4(a)(ii) and specifying the particulars thereof in
         detail. Nothing herein shall limit the right of the Employee or his
         beneficiaries to contest the validity or propriety of any such
         determination.

                  b)       in the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Employee during the
         Period of Employment with the right to benefits as provided in Section
         5 hereof upon the occurrence of one or more of the following events:

                           i)       Any termination by the Company of the
                  employment of the Employee for any reason other than for Cause
                  or as a result of the death of the Employee or by reason of
                  the Employee's disability and the actual receipt of disability
                  benefits in accordance with Section 4(a)(i) hereof; or

                           ii)      Termination by the Employee of his
                  employment with the Company upon the occurrence of any of the
                  following events:

                                    A)       A reduction in the aggregate of the
                           Employee's Base Pay and Incentive Pay received from
                           the Company, or the termination of the Employee's
                           rights to any Employee Benefits to which he was
                           entitled immediately prior to the Change in Control
                           or a reduction in scope or

<PAGE>

                           value thereof without the prior written consent of
                           the Employee, any of which is not remedied within 10
                           calendar days after receipt by the Company of written
                           notice from the Employee of such change, reduction or
                           termination, as the case may be;

                                    B)       The liquidation, dissolution,
                           merger, consolidation or reorganization of the
                           Company or transfer of all or a significant portion
                           of its business and/or assets, unless the successor
                           or successors (by liquidation, merger, consolidation,
                           reorganization or otherwise) to which all or a
                           significant portion of its business and/or assets
                           have been transferred (directly or by operation of
                           law) shall have assumed all duties and obligations of
                           the Company under this Agreement pursuant to Section
                           11 hereof;

                                    C)       The Company requires the Employee
                           to have his principal location of work changed to any
                           location which is in excess of 50 miles from the
                           location thereof immediately prior to the Change of
                           Control or to travel away from his office in the
                           course of discharging his responsibilities or duties
                           hereunder significantly more (in terms of either
                           consecutive days or aggregate days in any calendar
                           year) than was required of him prior to the Change of
                           Control without, in either case, his prior consent;
                           or

                                    D)       Any material breach of this
                           Agreement by the Company or any successor thereto.

                  c)       A termination by the Company pursuant to Section 4(a)
         hereof or by the Employee pursuant to Section 4(b) hereof shall not
         affect any rights which the Employee may have pursuant to any
         agreement, policy, plan, program or arrangement of the Company
         providing Employee Benefits, which rights shall be governed by the
         terms thereof. If this Agreement or the employment of the Employee is
         terminated under circumstances in which the Employee is not entitled to
         any payments under Sections 3 or 5 hereof, the Employee shall have no
         further obligation or liability to the Company hereunder with respect
         to his prior or any future employment by the Company.

         5.       SEVERANCE COMPENSATION.

                  a)       If, following the occurrence of a Change in Control,
         the Company shall terminate the Employee's employment during the Period
         of Employment other than pursuant to Section 4(a) hereof, or if the
         Employee shall terminate his employment pursuant to Section 4(b)
         hereof, the Company shall pay to the Employee the amount specified in
         Section 5(a)(i) hereof within ten business days after the date (the
         Termination Date) that the Employee's employment is terminated (the
         effective date of which shall be the date of termination, or such other
         date that may be specified by the Employee if the termination is
         pursuant to Section 4(b) hereof):

                           i)       In lieu of any further payments to the
                  Employee for periods subsequent to the Termination Date, but
                  without affecting the rights of the

<PAGE>

                  Employee referred to in Section 5(b) hereof, a lump sum
                  payment (the Severance Payment) in an amount equal to the
                  present value (using a discount rate required to be utilized
                  for purposes of computations under Section 280G of the Code or
                  any successor provision thereto, or if no such rate is so
                  required to be used, a rate equal to the then-applicable
                  interest rate prescribed by the Pension Benefit Guarantee
                  Corporation for benefit valuations in connection with
                  non-multiemployer pension plan terminations assuming the
                  immediate commencement of benefit payments (the Discount Rate)
                  of the sum of (A) the Base Pay (at the highest rate in effect
                  during the Term prior to the Termination Date) for one year,
                  plus (B) the Incentive Pay for one year (based upon the
                  greatest amount of Incentive Pay paid or payable to the
                  Employee for any year during the three calendar years
                  preceding the year in which the Termination Date occurs);
                  provided, however, that in no event will the present value (as
                  determined under Section 280G of the Code or any successor
                  provision thereto) of the amount otherwise payable hereunder,
                  when added to the present value (as determined under Section
                  280G of the Code or any successor provision thereto) of any
                  other parachute payments (as that term is defined in Section
                  280G of the Code (without regard to Section 280G(b)(2)(A)(ii)
                  thereof) or any successor provision thereto) from the Company,
                  exceed an amount (the A299% Amount) equal to 299% of the
                  Employee's base amount (as that term is defined in Section
                  280G of the Code or any successor provision thereto) and if
                  the amount otherwise payable hereunder would exceed the 299%
                  Amount, the Severance Payment shall be reduced to the extent
                  necessary so that the aggregate present value determined in
                  the previous clause does not exceed the 299% Amount.

                           ii)      The determination of whether any amount
                  otherwise payable under Section 5(a)(i) causes the 299% Amount
                  to be exceeded shall be made, if requested by the Employee or
                  the Company, by tax counsel selected by the Company and
                  reasonably acceptable to the Employee. The costs of obtaining
                  such determination shall be borne by the Company. The fact
                  that the Employee shall have his right to the Severance
                  Payment reduced as a result of the existence of the
                  limitations contained in this Section 5(a) shall not limit or
                  otherwise affect any rights of the Employee to any Employee
                  Benefit, or other right arising other than pursuant to this
                  Agreement. Without limiting the generality of the foregoing,
                  upon the Employee's termination of employment as provided in
                  this Section 5, the Company shall pay over to him all vested
                  benefits to which he is entitled under and in accordance with
                  the terms of the Company's employee savings, stock ownership,
                  supplemental executive retirement and similar Plans in the
                  event such payments are not otherwise made in accordance with
                  the terms of such plans.

                           iii)     Except to the extent that the payments or
                  benefits pursuant to this Section 5(a)(iii) would result in a
                  reduction of the amount of the Severance Payment because they
                  would exceed the 299% Amount, (A) for the remainder of the
                  Period of Employment the Company shall arrange to provide the
                  Employee with Employee Benefits substantially similar to those
                  which the Employee was receiving or entitled to receive
                  immediately prior to the Termination Date (and if and to the
                  extent that such benefits shall not or cannot be paid or
                  provided under

<PAGE>

                  any policy, plan, program or arrangement of the Company solely
                  due to the fact that the Employee is no longer an officer or
                  employee of the Company, then the Company shall itself pay or
                  provide for the payment to the Employee, his dependents and
                  beneficiaries, such Employee Benefits) and (B) without
                  limiting the generality of the foregoing, the remainder of the
                  Period of Employment shall be considered service with the
                  Company for the purpose of service credits under the Company's
                  retirement income, supplemental executive retirement and other
                  benefit plans of the Company applicable to the Employee or his
                  beneficiaries immediately prior to the Termination Date.
                  Without otherwise limiting the purposes or effect of Section 6
                  hereof, Employee Benefits payable to the Employee pursuant to
                  this Section 5(a)(iii) by reason of any welfare benefit plan
                  of the Company (as the term welfare benefit plan is defined in
                  Section 3(1) of the Employee Retirement Income Security Act of
                  1974, as amended) shall be reduced to the extent comparable
                  welfare benefits are actually received by the Employee from
                  another employer during such period following the Employee's
                  Termination Date until the expiration of the Period of
                  Employment.

                           iv)      Notwithstanding any provision of the Section
                  5(a) to the contrary, in the event the benefits intended to be
                  provided to the Employee pursuant to Section 5(a)(iii) hereof
                  are required to be reduced in whole or in part because the
                  value of such Employee Benefits, when added to the amount of
                  the Severance Payment under Section 5(a)(i), would exceed 299%
                  Amount, the Employee shall have the option to elect to
                  receive, in lieu of all or a portion of the Severance Payment
                  provided in Section 5(a)(i) hereof, one or more Employee
                  Benefits, provided that (A) prior to the receipt of any
                  payment under Section 5(a)(i) hereof, the Employee notifies
                  the Company of the Employee Benefit or Employee Benefits so
                  elected to be received, and (B) in no event shall the
                  aggregate present value of the payments in the nature of
                  compensation (as that phrase is used in Section 280G of the
                  Code) received by the Employee as a result of the receipt of
                  such Employee Benefits, when added to the remaining portion of
                  the Severance Payment, if any, to be received by the Employee,
                  exceed the 299% Amount.

                           v)       In addition to all other compensation due to
                  the Employee, the following shall occur immediately following
                  the occurrence of a Change in Control:

                                    A)       all Company stock options held by
                           the Employee prior to a Change in Control shall
                           become fully exercisable, regardless of whether or
                           not the vesting conditions set forth in the relevant
                           stock option agreements have been satisfied in full;
                           and

                                    B)       all restrictions on any restricted
                           Company stock granted to the Employee prior to a
                           Change in Control shall be removed and the stock
                           shall be freely transferable, regardless of whether
                           the conditions set forth in the relevant restricted
                           stock agreements have been satisfied in full.

         b)       Upon written notice given by the Employee to the Company prior
to the receipt of any payment pursuant to Section 5(a) hereof, the Employee, at
his sole option, without reduction

<PAGE>

to reflect the present value of such amounts as aforesaid, may elect to have all
or any of the Severance Payment payable pursuant to Section 5(a)(i) hereof paid
to him on a quarterly or monthly basis during the remainder of the Period of
Employment.

         c)       There shall be no right of set-off or counterclaim in respect
of any claim, debt or obligation against any payment to or benefit for the
Employee provided for in this Agreement.

         d)       Without limiting the rights of the Employee at law or in
equity, if the Company fails to make any payment required to be made hereunder
on a timely basis, the Company shall pay interest on the amount thereof at an
annualized rate of interest equal to the then-applicable Discount Rate or, if
lesser, the highest rate allowed by applicable usury laws.

         6.       NO MITIGATION OBLIGATION. The Company hereby acknowledges that
it will be difficult, and may be impossible, for the Employee to find reasonably
comparable employment following the Termination Date. Accordingly, the parties
hereto expressly agree that the payment of the severance compensation by the
Company to the Employee in accordance with the terms of this Agreement will be
liquidated damages, and that the Employee shall not be required to mitigate the
amount of any payment provided for in this Agreement by seeking other employment
or otherwise, nor shall any profits, income, earnings or other benefits from any
source whatsoever create any mitigation, offset, reduction or any other
obligation on the part of the Employee hereunder or otherwise, except as
expressly provided in Section 5(a)(iii) hereof.

         7.       COMPETITIVE ACTIVITY. During a period ending six months
following the Termination Date, if the Executive shall have received or shall be
receiving benefits under Section 5(a) hereof, the Executive shall not, without
the prior written consent by the Company, directly or indirectly engage in the
business of commercial banking in competition with the business of the Company
within Harris County, Fort Bend County and Montgomery County, Texas and any
other geographical area served by the Company during the twelve (12) month
period immediately preceding termination of employment nor will the Executive
engage, within this geographical area, in the design, development, distribution,
or sale of a product or service in competition with any product or service being
marketed or planned by the Company at such time, the plans, designs or
specifications of which have been revealed to the Executive. The Executive
acknowledges that these limited prohibitions are reasonable as to time,
geographical area and scope of activities to be restrained and that the limited
prohibitions do not impose a greater restraint than is necessary to protect the
Company's goodwill, proprietary information and other business interests.
Competitive Activity shall mean the prohibitions set forth above in this Section
7, but shall not include (i) the mere ownership of securities in any such
enterprise and exercise of rights appurtenant thereto or (ii) participation in
management of any such enterprise or business operation thereof other than in
connection with the competitive operation of such enterprise.

         8.       LEGAL FEES AND EXPENSES. In the event of a breach of this
Agreement by the Company, it is the intent of the Company that the Employee not
be required to incur the expenses associated with the enforcement of his rights
under this Agreement by litigation or other legal action because the cost and
expense thereof would substantially detract from the benefits intended to be
extended to the Employee hereunder. Accordingly, if the Company fails to comply
with any of its obligations under this Agreement or in the event that the
Company or any other person takes any action to declare this Agreement void or
unenforceable, or institutes

<PAGE>

any litigation designed to deny, or to recover from, the Employee the benefits
intended to be provided to the Employee hereunder, the Company irrevocably
authorizes the Employee from time to time to retain counsel of his choice, at
the expense of the Company as hereafter provided, to represent the Employee in
connection with the initiation or defense of any litigation or other legal
action, whether by or against the Company or any Director, officer, shareholder
or other person affiliated with the Company, in any jurisdiction.
Notwithstanding any existing or prior attorney-client relationship between the
Company and such counsel, the Company irrevocably consents to the Employee's
entering into an attorney-client relationship with such counsel (other than
Vinson & Elkins L.L.P.), and in that connection the Company and the Employee
agree that a confidential relationship shall exist between the Employee and such
counsel. The Company shall pay or cause to be paid and shall be solely
responsible for any and all attorneys and related fees and expenses incurred by
the Employee as a result of the Company's failure to perform this Agreement or
any provision thereof or as a result of the Company or any person contesting the
validity or enforceability of this Agreement or any provision thereof as
aforesaid. If the Company should prevail in any litigation regarding this
Agreement, however, the Company shall not be responsible for any attorneys and
related fees and expenses incurred by Employee in connection with such
litigation.

         9.       EMPLOYMENT RIGHTS. Nothing expressed or implied in this
Agreement shall create any right or duty on the part of the Company or the
Employee to have the Employee remain in the employment of the Company prior to
any Change in Control; provided, however, that any termination of employment of
the Employee or removal of the Employee as an Officer of the Company following
the commencement of any discussion with a third person that ultimately results
in a Change in Control shall be deemed to be a termination or removal of the
Employee after a Change in Control for purposes of this Agreement.

         10.      WITHHOLDING OF TAXES. The Company may withhold from any
amounts payable under this Agreement all federal, state, city or other taxes as
shall be required pursuant to any law or government regulation or ruling.

         11.      SUCCESSORS AND BINDING AGREEMENT.

                  a)       The Company shall require any successor (whether
         direct or indirect, by purchase, merger, consolidation, reorganization
         or otherwise) to all or substantially all of the business and/or assets
         of the Company to execute an agreement pursuant to which the successor
         expressly assumes all of the liabilities and obligations of the Company
         hereunder and agrees to perform this Agreement in the same manner and
         to the same extent the Company would be required to perform if no such
         succession had taken place. This Agreement shall be binding upon and
         inure to the benefit of the Company and any successor to the Company,
         including without limitation any persons acquiring directly or
         indirectly all or substantially all of the business and/or assets of
         the Company whether by purchase, merger, consolidation, reorganization
         or otherwise (and such successor shall thereafter be deemed the Company
         for the purposes of this Agreement), but shall not otherwise be
         assignable, transferable or delegable by the Company.

<PAGE>

                  b)       This Agreement shall inure to the benefit of and be
         enforceable by the Employee's personal or legal representatives,
         executors, administrators, successors, heirs, distributees and/or
         legatees.

                  c)       This Agreement is personal in nature and neither of
         the parties hereto shall, without the consent of the other, assign,
         transfer or delegate this Agreement or any rights or obligations
         hereunder except as expressly provided in Section 11(a) hereof. Without
         limiting the generality of the foregoing, the Employee's right to
         receive payments hereunder shall not be assignable, transferable or
         delegable, whether by pledge, creation of a security interest or
         otherwise, other than by a transfer by the Employee's will or by the
         laws of descent and distribution and, in the event of any attempted
         assignment or transfer contrary to this Section 11(c), the Company
         shall have no liability to pay any amount so attempted to be assigned,
         transferred or delegated.

                  d)       The Company and the Employee recognize that each
         Party will have no adequate remedy at law for breach by the other of
         any of the agreements contained herein and, in the event of any such
         breach, the Company and the Employee hereby agree and consent that the
         other shall be entitled to a decree of specific performance, mandamus
         or other appropriate remedy to enforce performance of this Agreement.

         12.      NOTICE. For all purposes of this Agreement, all communications
provided for herein shall be in writing and shall be deemed to have been duly
given when delivered or three business days after having been mailed by United
States registered or certified mail, return receipt requested, postage prepaid,
addressed to the Company (to the attention of the Secretary of the Company) at
its principal executive office and to the Employee at his principal residence,
or to such other address as any party may have furnished to the other in writing
and in accordance herewith, except that notices of change of address shall be
effective only upon receipt.

         13.      GOVERNING LAW. The validity, interpretation, construction and
performance of this Agreement shall be governed by the laws of the State of
Texas, without giving effect to the principles of conflict of laws of such
State.

         14.      VALIDITY. If any provision of this Agreement or the
application of any provision hereof to any person or circumstances is held
invalid, unenforceable or otherwise illegal, the remainder of this Agreement and
the application of such provision to any other person or circumstances shall not
be affected, and the provision so held to be invalid, unenforceable or otherwise
illegal shall be reformed to the extent (and only to the extent) necessary to
make it enforceable, valid and legal.

         15.      MISCELLANEOUS. No provisions of this Agreement may be
modified, waived or discharged unless such waiver, modification or discharge is
agreed to in writing signed by the Employee and the Company. No waiver by either
party hereto at any time of any breach by the other party hereto or compliance
with any condition or provision of this Agreement to be performed by such other
party shall be deemed a waiver of similar or dissimilar provisions or conditions
at the same or at any prior or subsequent time. No agreements or
representations, oral or otherwise, expressed or implied with respect to the
subject matter hereof have been made by either party which are not set forth
expressly in this Agreement.

<PAGE>

         16.      PRIOR AGREEMENTS. This Agreement is voluntarily entered into
and supersedes and takes the place of any prior change in control, severance or
employment agreements between the parties hereto. The parties hereto expressly
agree and hereby declare that any and all prior change in control, severance or
employment agreements between the parties are terminated and of no force or
effect.

         17.      COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original but all of which
together will constitute one and the same agreement.

<PAGE>

         IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
executed and delivered as of the date first above written.

                                    SOUTHWEST BANCORPORATION OF TEXAS, INC.

                                    By: /s/ Paul B. Murphy
                                    ---------------------------------------
                                             Paul B. Murphy, Jr.

                                    EXECUTIVE:

                                    /s/  Dale Andreas
                                    ---------------------------------------
<PAGE>

                           CHANGE IN CONTROL AGREEMENT

         This CHANGE IN CONTROL AGREEMENT (Agreement), effective as of January
1, 2001 (the Effective Date), by and between Southwest Bancorporation of Texas,
Inc., a Texas corporation (the Company), and Kenneth Olan. (the Executive);

                              W I T N E S S E T H:

         WHEREAS, the Employee is an officer of the Company or its wholly-owned
subsidiary, Southwest Bank of Texas National Association (the Bank) and has made
and/or is expected to make or continue to make major contributions to the
profitability, growth and financial strength of the Company and the Bank;

         WHEREAS, references herein to the Employee's employment by the Company
shall also mean his or her employment by the Bank, and references herein to
payments of any nature to be made by the Company to the Employee shall mean that
either the Company will make such payments or it will cause the Bank to make
such payments to the Employee;

         WHEREAS, the Company desires to assure itself of both present and
future continuity of management in the event of a Change in Control (as defined
hereafter) and desires to establish certain minimum compensation rights of its
key officers, including the Employee, applicable in the event of a Change in
Control;

         WHEREAS, the Company wishes to ensure that its key officers are not
practically disabled from discharging their duties upon a Change in Control;

         WHEREAS, this Agreement is not intended to alter materially the
compensation and benefits which the Employee could reasonably expect to receive
from the Company or the Bank absent a Change in Control and, accordingly,
although effective and binding as of the date hereof, this Agreement shall
become operative only upon the occurrence of a Change of Control; and

         WHEREAS, the Employee is willing to render services to the Company and
the Bank on the terms and subject to the conditions set forth in this Agreement;

         NOW, THEREFORE, the Company and the Employee agree as follows:

         1.       OPERATION OF AGREEMENT.

                  a)       This Agreement shall be effective and binding as of
         the Effective Date, but, anything in this Agreement to the contrary
         notwithstanding, this Agreement shall not be operative unless and until
         there shall have occurred a Change in Control.

                  For purposes of this Agreement, a Change in Control shall have
         occurred if at any time during the Term (as that term is hereafter
         defined) any of the following events shall occur:
<PAGE>

                           i)       The Company is merged, consolidated or
                  reorganized into or with or sells all or substantially all of
                  its assets to another corporation or other legal person, and
                  as a result of such merger, consolidation, reorganization or
                  sale (A) less than a majority of the combined voting power of
                  the then-outstanding securities of such corporation or person
                  immediately after such transaction are held in the aggregate
                  by the holders of Voting Stock (as that term is hereinafter
                  defined) of the Company immediately prior to such transaction
                  and (B) it is intended that persons serving as Directors of
                  the Company immediately prior to the transaction will
                  constitute none of or less than a majority of the Directors of
                  the other corporation or legal person after consummation of
                  the transaction; or

                           ii)      If during any one (1) year period,
                  individuals who at the beginning of any such period constitute
                  the Directors of the Company cease for any reason to
                  constitute at least a majority thereof, unless the election,
                  or the nomination for election by the Company's shareholders,
                  of each Director of the Company first elected during such
                  period was approved by a vote of at least two-thirds of the
                  Directors of the Company then still in office who were
                  Directors of the Company at the beginning of any such period.

                  b)       Upon occurrence of a Change in Control at any time
         during the Term, this Agreement shall become immediately operative.

                  c)       The period during which this Agreement shall be in
         effect (the Term) shall commence as of the date hereof and shall expire
         as of the later of (i) the close of business on December 31, 2002, and
         (ii) the expiration of the Period of Employment (as that term is
         hereinafter defined); provided, however, that (A) commencing on
         December 31, 2002, and the last day of each of the Company's Fiscal
         Years thereafter, the Term of this Agreement shall automatically be
         extended for an additional year unless, not later than the last day of
         the immediately preceding September, the Company or the Employee shall
         have given notice that it or he, as the case may be, does not wish to
         have the Term extended and (B) subject to Section 9 hereof, if, prior
         to a Change in Control, the Employee ceases for any reason to be an
         employee of the Company, thereupon the Term shall be deemed to have
         expired and this Agreement shall immediately terminate and be of no
         further effect.

         2.       EMPLOYMENT; PERIOD OF EMPLOYMENT.

                  a)       Subject to the terms and conditions of this
         Agreement, upon the occurrence of a Change in Control, the Company
         shall continue the Employee in its employ and the Employee shall remain
         in the employ of the Company for the period set forth in Section 2(b)
         hereof (the Period of Employment). Throughout the Period of Employment,
         the Employee shall devote substantially all of his time during normal
         business hours (subject to vacations, sick leave and other absences in
         accordance with the policies of the Company as in effect for senior
         executives immediately prior to the Change in Control) to the business
         and affairs of the Company, but nothing in this Agreement shall
         preclude the Employee from devoting reasonable periods of time during

<PAGE>

         normal business hours to (i) serving as a director, trustee or member
         of or participant in any organization or business so long as such
         organization or business is not engaged, directly or indirectly, in the
         business of commercial banking in competition with the business of the
         Company, (ii) engaging in charitable and community activities, or (iii)
         managing his personal investments.

                  b)       The Period of Employment shall commence on the date
         of an occurrence of a Change in Control and, subject only to the
         provisions of Section 4 hereof, shall continue until the earlier of (i)
         the expiration of the second anniversary of the occurrence of the
         Change in Control or (ii) the Employee's death.

         3.       COMPENSATION DURING PERIOD OF EMPLOYMENT.

                  a)       Upon the occurrence of a Change in Control, the
         Employee shall receive during the Period of Employment (i) annual base
         salary at a rate not less than the Employees annual fixed or base
         compensation payable monthly or otherwise as in effect for senior
         executives of the Company immediately prior to the occurrence of a
         Change in Control or such higher rate as may be determined from time to
         time by the Board of Directors of the Company (the Board) or the
         Compensation Committee thereof (the Committee) (which base salary at
         such rate is herein referred to as Base Pay) and (ii) an annual cash
         bonus in an amount determined for the Employee in accordance with the
         Company's incentive compensation plan or plans in effect at the time of
         the Change in Control or in accordance with any bonus, incentive,
         profit-sharing, performance, discretionary pay or similar policy, plan,
         program or arrangement of the Company or any successor thereto
         providing benefits at least as great as the benefits payable thereunder
         prior to the Change in Control (Incentive Pay); provided, however, that
         nothing herein shall preclude a change in the mix between Base Pay and
         Incentive Pay so long as the aggregate cash compensation received by
         the Employee in any one calendar year is not reduced in connection
         therewith or as a result thereof and, provided further, however, that
         in no event shall any increase in the Employee's aggregate cash
         compensation or any portion thereof in any way diminish any other
         obligation of the Company under this Agreement.

                  b)       For his service pursuant to Section 2(a) hereof,
         during the Period of Employment the Employee shall, if and on the same
         basis as he participated therein immediately prior to the Change in
         Control, be a full participant in, and shall be entitled to the
         perquisites, benefits and service credit for benefits as provided under
         any and all employee retirement income and welfare benefit policies,
         plans, programs or arrangements in which senior executives of the
         Company participate, including without limitation any stock option,
         stock purchase, stock appreciation, savings, pension, supplemental
         executive retirement or other retirement income or welfare benefit,
         deferred compensation, incentive compensation, group and/or executive
         life, accident, health, dental, medical/hospital or other insurance
         (whether funded by actual insurance or self-insured by the Company),
         disability, salary continuation, expense reimbursement and other
         employee benefit policies, plans, programs or arrangements that may now
         exist or any equivalent successor policies, plans, programs or
         arrangements that may be adopted hereafter by the Company providing
         perquisites, benefits and service credit for benefits at

<PAGE>

         least as great as are payable thereunder prior to a Change in
         Control(collectively, Employee Benefits); provided, however, that the
         Employee's rights thereunder shall be governed by the terms thereof and
         shall not be enlarged hereunder or otherwise affected hereby. Subject
         to the proviso in the immediately preceding sentence, if and to the
         extent such perquisites, benefits or service credit for benefits are
         not payable or provided under any such policy, plan, program or
         arrangement as a result of the amendment or termination thereof, then
         the Company shall itself pay or provide therefor. Nothing in this
         Agreement shall preclude improvement or enhancement of any such
         Employee Benefits, provided that no such improvement shall in any way
         diminish any other obligation of the Company under this Agreement.

                  c)       The Company has determined that the amounts payable
         pursuant to this Section 3 constitute reasonable compensation.
         Accordingly, notwithstanding any other provision hereof, unless such
         action would be expressly prohibited by applicable law, if any amount
         paid or payable pursuant to this Section 3 is subject to the excise tax
         imposed by Section 4999 of the Internal Revenue Code of 1986, as
         amended (the Code), the Company will pay to the Employee an additional
         amount in cash equal to the amount necessary to cause the aggregate
         remuneration received by the Employee under this Section 3, including
         such additional cash payment (net of all federal, state and local
         income taxes and all taxes payable as the result of the application of
         Sections 280G and 4999 of the Code) to be equal to the aggregate
         remuneration the Employee would have received under this Section 3,
         excluding such additional payment (net of all federal, state and local
         income taxes), as if Sections 280G and 4999 of the Code (and any
         successor provisions thereto) had not been enacted into law.

         4.       TERMINATION FOLLOWING A CHANGE IN CONTROL.

                  a)       In the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Company during the
         Period of Employment only upon the occurrence of one or more of the
         following events:

                           i)       If the Employee is unable to perform the
                  essential functions of his job (with or without reasonable
                  accommodation) because he has become permanently disabled
                  within the meaning of, and actually begins to receive
                  disability benefits pursuant to, the long-term disability plan
                  in effect for senior executives or, if applicable, employees
                  of the Company immediately prior to the Change in Control; or

                           ii)      For Cause, which for purposes of this
                  Agreement shall mean that, prior to any termination pursuant
                  to Section 4(b) hereof, the Employee shall have committed:

                                    A)       Gross negligence or willful
                           misconduct in connection with his duties or in the
                           course of his employment with the Company;

                                    B)       an act of fraud, embezzlement or
                           theft in connection with his duties or in the course
                           of his employment with the Company;

<PAGE>

                                    C)       intentional wrongful damage to
                           property of the Company;

                                    D)       intentional wrongful disclosure of
                           secret processes or confidential information of the
                           Company;

                                    E)       intentional wrongful engagement in
                           any Competitive Activity; or

                                    F)       an act leading to a conviction of a
                           felony or a misdemeanor involving moral turpitude.

                  For purposes of this Agreement, no act, or failure to act, on
         the part of the Employee shall be deemed intentional if it was due
         primarily to an error in judgment or negligence, but shall be deemed
         intentional only if done, or omitted to be done, by the Employee not in
         good faith and without reasonable belief that his action or omission
         was in the best interest of the Company. Notwithstanding the foregoing,
         the Employee shall not be deemed to have been terminated for Cause
         hereunder unless and until there shall have been delivered to the
         Employee a copy of a resolution duly adopted by the affirmative vote of
         not less than three-quarters of the Board then in office at a meeting
         of the Board called and held for such purpose (after reasonable notice
         to the Employee and an opportunity for the Employee, together with his
         counsel, to be heard before the Board), finding that, in the good faith
         opinion of the Board, the Employee had committed an act set forth above
         in this Section 4(a)(ii) and specifying the particulars thereof in
         detail. Nothing herein shall limit the right of the Employee or his
         beneficiaries to contest the validity or propriety of any such
         determination.

                  b)       in the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Employee during the
         Period of Employment with the right to benefits as provided in Section
         5 hereof upon the occurrence of one or more of the following events:

                           i)       Any termination by the Company of the
                  employment of the Employee for any reason other than for Cause
                  or as a result of the death of the Employee or by reason of
                  the Employee's disability and the actual receipt of disability
                  benefits in accordance with Section 4(a)(i) hereof; or

                           ii)      Termination by the Employee of his
                  employment with the Company upon the occurrence of any of the
                  following events:

                                    A)       A reduction in the aggregate of the
                           Employee's Base Pay and Incentive Pay received from
                           the Company, or the termination of the Employee's
                           rights to any Employee Benefits to which he was
                           entitled immediately prior to the Change in Control
                           or a reduction in scope or value thereof without the
                           prior written consent of the Employee, any of which
                           is not remedied within 10 calendar days after receipt
                           by the

<PAGE>

                           Company of written notice from the Employee of such
                           change, reduction or termination, as the case may be;

                                    B)       The liquidation, dissolution,
                           merger, consolidation or reorganization of the
                           Company or transfer of all or a significant portion
                           of its business and/or assets, unless the successor
                           or successors (by liquidation, merger, consolidation,
                           reorganization or otherwise) to which all or a
                           significant portion of its business and/or assets
                           have been transferred (directly or by operation of
                           law) shall have assumed all duties and obligations of
                           the Company under this Agreement pursuant to Section
                           11 hereof;

                                    C)       The Company requires the Employee
                           to have his principal location of work changed to any
                           location which is in excess of 50 miles from the
                           location thereof immediately prior to the Change of
                           Control or to travel away from his office in the
                           course of discharging his responsibilities or duties
                           hereunder significantly more (in terms of either
                           consecutive days or aggregate days in any calendar
                           year) than was required of him prior to the Change of
                           Control without, in either case, his prior consent;
                           or

                                    D)       Any material breach of this
                           Agreement by the Company or any successor thereto.

                  c)       A termination by the Company pursuant to Section 4(a)
         hereof or by the Employee pursuant to Section 4(b) hereof shall not
         affect any rights which the Employee may have pursuant to any
         agreement, policy, plan, program or arrangement of the Company
         providing Employee Benefits, which rights shall be governed by the
         terms thereof. If this Agreement or the employment of the Employee is
         terminated under circumstances in which the Employee is not entitled to
         any payments under Sections 3 or 5 hereof, the Employee shall have no
         further obligation or liability to the Company hereunder with respect
         to his prior or any future employment by the Company.

         5.       SEVERANCE COMPENSATION.

                  a)       If, following the occurrence of a Change in Control,
         the Company shall terminate the Employee's employment during the Period
         of Employment other than pursuant to Section 4(a) hereof, or if the
         Employee shall terminate his employment pursuant to Section 4(b)
         hereof, the Company shall pay to the Employee the amount specified in
         Section 5(a)(i) hereof within ten business days after the date (the
         Termination Date) that the Employee's employment is terminated (the
         effective date of which shall be the date of termination, or such other
         date that may be specified by the Employee if the termination is
         pursuant to Section 4(b) hereof):

                           i)       In lieu of any further payments to the
                  Employee for periods subsequent to the Termination Date, but
                  without affecting the rights of the Employee referred to in
                  Section 5(b) hereof, a lump sum payment (the Severance
                  Payment) in an amount equal to the present value (using a
                  discount rate required

<PAGE>

                  to be utilized for purposes of computations under Section 280G
                  of the Code or any successor provision thereto, or if no such
                  rate is so required to be used, a rate equal to the
                  then-applicable interest rate prescribed by the Pension
                  Benefit Guarantee Corporation for benefit valuations in
                  connection with non-multiemployer pension plan terminations
                  assuming the immediate commencement of benefit payments (the
                  Discount Rate) of the sum of (A) the Base Pay (at the highest
                  rate in effect during the Term prior to the Termination Date)
                  for one year, plus (B) the Incentive Pay for one year (based
                  upon the greatest amount of Incentive Pay paid or payable to
                  the Employee for any year during the three calendar years
                  preceding the year in which the Termination Date occurs);
                  provided, however, that in no event will the present value (as
                  determined under Section 280G of the Code or any successor
                  provision thereto) of the amount otherwise payable hereunder,
                  when added to the present value (as determined under Section
                  280G of the Code or any successor provision thereto) of any
                  other parachute payments (as that term is defined in Section
                  280G of the Code (without regard to Section 280G(b)(2)(A)(ii)
                  thereof) or any successor provision thereto) from the Company,
                  exceed an amount (the A299% Amount) equal to 299% of the
                  Employee's base amount (as that term is defined in Section
                  280G of the Code or any successor provision thereto) and if
                  the amount otherwise payable hereunder would exceed the 299%
                  Amount, the Severance Payment shall be reduced to the extent
                  necessary so that the aggregate present value determined in
                  the previous clause does not exceed the 299% Amount.

                           ii)      The determination of whether any amount
                  otherwise payable under Section 5(a)(i) causes the 299% Amount
                  to be exceeded shall be made, if requested by the Employee or
                  the Company, by tax counsel selected by the Company and
                  reasonably acceptable to the Employee. The costs of obtaining
                  such determination shall be borne by the Company. The fact
                  that the Employee shall have his right to the Severance
                  Payment reduced as a result of the existence of the
                  limitations contained in this Section 5(a) shall not limit or
                  otherwise affect any rights of the Employee to any Employee
                  Benefit, or other right arising other than pursuant to this
                  Agreement. Without limiting the generality of the foregoing,
                  upon the Employee's termination of employment as provided in
                  this Section 5, the Company shall pay over to him all vested
                  benefits to which he is entitled under and in accordance with
                  the terms of the Company's employee savings, stock ownership,
                  supplemental executive retirement and similar Plans in the
                  event such payments are not otherwise made in accordance with
                  the terms of such plans.

                           iii)     Except to the extent that the payments or
                  benefits pursuant to this Section 5(a)(iii) would result in a
                  reduction of the amount of the Severance Payment because they
                  would exceed the 299% Amount, (A) for the remainder of the
                  Period of Employment the Company shall arrange to provide the
                  Employee with Employee Benefits substantially similar to those
                  which the Employee was receiving or entitled to receive
                  immediately prior to the Termination Date (and if and to the
                  extent that such benefits shall not or cannot be paid or
                  provided under any policy, plan, program or arrangement of the
                  Company solely due to the fact that the Employee is no longer
                  an officer or employee of the Company, then the

<PAGE>

                  Company shall itself pay or provide for the payment to the
                  Employee, his dependents and beneficiaries, such Employee
                  Benefits) and (B) without limiting the generality of the
                  foregoing, the remainder of the Period of Employment shall be
                  considered service with the Company for the purpose of service
                  credits under the Company's retirement income, supplemental
                  executive retirement and other benefit plans of the Company
                  applicable to the Employee or his beneficiaries immediately
                  prior to the Termination Date. Without otherwise limiting the
                  purposes or effect of Section 6 hereof, Employee Benefits
                  payable to the Employee pursuant to this Section 5(a)(iii) by
                  reason of any welfare benefit plan of the Company (as the term
                  welfare benefit plan is defined in Section 3(1) of the
                  Employee Retirement Income Security Act of 1974, as amended)
                  shall be reduced to the extent comparable welfare benefits are
                  actually received by the Employee from another employer during
                  such period following the Employee's Termination Date until
                  the expiration of the Period of Employment.

                           iv)      Notwithstanding any provision of the Section
                  5(a) to the contrary, in the event the benefits intended to be
                  provided to the Employee pursuant to Section 5(a)(iii) hereof
                  are required to be reduced in whole or in part because the
                  value of such Employee Benefits, when added to the amount of
                  the Severance Payment under Section 5(a)(i), would exceed 299%
                  Amount, the Employee shall have the option to elect to
                  receive, in lieu of all or a portion of the Severance Payment
                  provided in Section 5(a)(i) hereof, one or more Employee
                  Benefits, provided that (A) prior to the receipt of any
                  payment under Section 5(a)(i) hereof, the Employee notifies
                  the Company of the Employee Benefit or Employee Benefits so
                  elected to be received, and (B) in no event shall the
                  aggregate present value of the payments in the nature of
                  compensation (as that phrase is used in Section 280G of the
                  Code) received by the Employee as a result of the receipt of
                  such Employee Benefits, when added to the remaining portion of
                  the Severance Payment, if any, to be received by the Employee,
                  exceed the 299% Amount.

                           v)       In addition to all other compensation due to
                  the Employee, the following shall occur immediately following
                  the occurrence of a Change in Control:

                                    A)       all Company stock options held by
                           the Employee prior to a Change in Control shall
                           become fully exercisable, regardless of whether or
                           not the vesting conditions set forth in the relevant
                           stock option agreements have been satisfied in full;
                           and

                                    B)       all restrictions on any restricted
                           Company stock granted to the Employee prior to a
                           Change in Control shall be removed and the stock
                           shall be freely transferable, regardless of whether
                           the conditions set forth in the relevant restricted
                           stock agreements have been satisfied in full.

         b)       Upon written notice given by the Employee to the Company prior
to the receipt of any payment pursuant to Section 5(a) hereof, the Employee, at
his sole option, without reduction to reflect the present value of such amounts
as aforesaid, may elect to have all or any of the

<PAGE>

Severance Payment payable pursuant to Section 5(a)(i) hereof paid to him on a
quarterly or monthly basis during the remainder of the Period of Employment.

         c)       There shall be no right of set-off or counterclaim in respect
of any claim, debt or obligation against any payment to or benefit for the
Employee provided for in this Agreement.

         d)       Without limiting the rights of the Employee at law or in
equity, if the Company fails to make any payment required to be made hereunder
on a timely basis, the Company shall pay interest on the amount thereof at an
annualized rate of interest equal to the then-applicable Discount Rate or, if
lesser, the highest rate allowed by applicable usury laws.

         6.       NO MITIGATION OBLIGATION. The Company hereby acknowledges that
it will be difficult, and may be impossible, for the Employee to find reasonably
comparable employment following the Termination Date. Accordingly, the parties
hereto expressly agree that the payment of the severance compensation by the
Company to the Employee in accordance with the terms of this Agreement will be
liquidated damages, and that the Employee shall not be required to mitigate the
amount of any payment provided for in this Agreement by seeking other employment
or otherwise, nor shall any profits, income, earnings or other benefits from any
source whatsoever create any mitigation, offset, reduction or any other
obligation on the part of the Employee hereunder or otherwise, except as
expressly provided in Section 5(a)(iii) hereof.

         7.       COMPETITIVE ACTIVITY. During a period ending six months
following the Termination Date, if the Executive shall have received or shall be
receiving benefits under Section 5(a) hereof, the Executive shall not, without
the prior written consent by the Company, directly or indirectly engage in the
business of commercial banking in competition with the business of the Company
within Harris County, Fort Bend County and Montgomery County, Texas and any
other geographical area served by the Company during the twelve (12) month
period immediately preceding termination of employment nor will the Executive
engage, within this geographical area, in the design, development, distribution,
or sale of a product or service in competition with any product or service being
marketed or planned by the Company at such time, the plans, designs or
specifications of which have been revealed to the Executive. The Executive
acknowledges that these limited prohibitions are reasonable as to time,
geographical area and scope of activities to be restrained and that the limited
prohibitions do not impose a greater restraint than is necessary to protect the
Company's goodwill, proprietary information and other business interests.
Competitive Activity shall mean the prohibitions set forth above in this Section
7, but shall not include (i) the mere ownership of securities in any such
enterprise and exercise of rights appurtenant thereto or (ii) participation in
management of any such enterprise or business operation thereof other than in
connection with the competitive operation of such enterprise.

         8.       LEGAL FEES AND EXPENSES. In the event of a breach of this
Agreement by the Company, it is the intent of the Company that the Employee not
be required to incur the expenses associated with the enforcement of his rights
under this Agreement by litigation or other legal action because the cost and
expense thereof would substantially detract from the benefits intended to be
extended to the Employee hereunder. Accordingly, if the Company fails to comply
with any of its obligations under this Agreement or in the event that the
Company or any other person takes any action to declare this Agreement void or
unenforceable, or institutes any litigation designed to deny, or to recover
from, the Employee the benefits intended to be

<PAGE>

provided to the Employee hereunder, the Company irrevocably authorizes the
Employee from time to time to retain counsel of his choice, at the expense of
the Company as hereafter provided, to represent the Employee in connection with
the initiation or defense of any litigation or other legal action, whether by or
against the Company or any Director, officer, shareholder or other person
affiliated with the Company, in any jurisdiction. Notwithstanding any existing
or prior attorney-client relationship between the Company and such counsel, the
Company irrevocably consents to the Employee's entering into an attorney-client
relationship with such counsel (other than Vinson & Elkins L.L.P.), and in that
connection the Company and the Employee agree that a confidential relationship
shall exist between the Employee and such counsel. The Company shall pay or
cause to be paid and shall be solely responsible for any and all attorneys and
related fees and expenses incurred by the Employee as a result of the Company's
failure to perform this Agreement or any provision thereof or as a result of the
Company or any person contesting the validity or enforceability of this
Agreement or any provision thereof as aforesaid. If the Company should prevail
in any litigation regarding this Agreement, however, the Company shall not be
responsible for any attorneys and related fees and expenses incurred by Employee
in connection with such litigation.

         9.       EMPLOYMENT RIGHTS. Nothing expressed or implied in this
Agreement shall create any right or duty on the part of the Company or the
Employee to have the Employee remain in the employment of the Company prior to
any Change in Control; provided, however, that any termination of employment of
the Employee or removal of the Employee as an Officer of the Company following
the commencement of any discussion with a third person that ultimately results
in a Change in Control shall be deemed to be a termination or removal of the
Employee after a Change in Control for purposes of this Agreement.

         10.      WITHHOLDING OF TAXES. The Company may withhold from any
amounts payable under this Agreement all federal, state, city or other taxes as
shall be required pursuant to any law or government regulation or ruling.

         11.      SUCCESSORS AND BINDING AGREEMENT.

                  a)       The Company shall require any successor (whether
         direct or indirect, by purchase, merger, consolidation, reorganization
         or otherwise) to all or substantially all of the business and/or assets
         of the Company to execute an agreement pursuant to which the successor
         expressly assumes all of the liabilities and obligations of the Company
         hereunder and agrees to perform this Agreement in the same manner and
         to the same extent the Company would be required to perform if no such
         succession had taken place. This Agreement shall be binding upon and
         inure to the benefit of the Company and any successor to the Company,
         including without limitation any persons acquiring directly or
         indirectly all or substantially all of the business and/or assets of
         the Company whether by purchase, merger, consolidation, reorganization
         or otherwise (and such successor shall thereafter be deemed the Company
         for the purposes of this Agreement), but shall not otherwise be
         assignable, transferable or delegable by the Company.

                  b)       This Agreement shall inure to the benefit of and be
         enforceable by the Employee's personal or legal representatives,
         executors, administrators, successors, heirs, distributees and/or
         legatees.

<PAGE>

                  c)       This Agreement is personal in nature and neither of
         the parties hereto shall, without the consent of the other, assign,
         transfer or delegate this Agreement or any rights or obligations
         hereunder except as expressly provided in Section 11(a) hereof. Without
         limiting the generality of the foregoing, the Employee's right to
         receive payments hereunder shall not be assignable, transferable or
         delegable, whether by pledge, creation of a security interest or
         otherwise, other than by a transfer by the Employee's will or by the
         laws of descent and distribution and, in the event of any attempted
         assignment or transfer contrary to this Section 11(c), the Company
         shall have no liability to pay any amount so attempted to be assigned,
         transferred or delegated.

                  d)       The Company and the Employee recognize that each
         Party will have no adequate remedy at law for breach by the other of
         any of the agreements contained herein and, in the event of any such
         breach, the Company and the Employee hereby agree and consent that the
         other shall be entitled to a decree of specific performance, mandamus
         or other appropriate remedy to enforce performance of this Agreement.

         12.      NOTICE. For all purposes of this Agreement, all communications
provided for herein shall be in writing and shall be deemed to have been duly
given when delivered or three business days after having been mailed by United
States registered or certified mail, return receipt requested, postage prepaid,
addressed to the Company (to the attention of the Secretary of the Company) at
its principal executive office and to the Employee at his principal residence,
or to such other address as any party may have furnished to the other in writing
and in accordance herewith, except that notices of change of address shall be
effective only upon receipt.

         13.      GOVERNING LAW. The validity, interpretation, construction and
performance of this Agreement shall be governed by the laws of the State of
Texas, without giving effect to the principles of conflict of laws of such
State.

         14.      VALIDITY. If any provision of this Agreement or the
application of any provision hereof to any person or circumstances is held
invalid, unenforceable or otherwise illegal, the remainder of this Agreement and
the application of such provision to any other person or circumstances shall not
be affected, and the provision so held to be invalid, unenforceable or otherwise
illegal shall be reformed to the extent (and only to the extent) necessary to
make it enforceable, valid and legal.

         15.      MISCELLANEOUS. No provisions of this Agreement may be
modified, waived or discharged unless such waiver, modification or discharge is
agreed to in writing signed by the Employee and the Company. No waiver by either
party hereto at any time of any breach by the other party hereto or compliance
with any condition or provision of this Agreement to be performed by such other
party shall be deemed a waiver of similar or dissimilar provisions or conditions
at the same or at any prior or subsequent time. No agreements or
representations, oral or otherwise, expressed or implied with respect to the
subject matter hereof have been made by either party which are not set forth
expressly in this Agreement.

         16.      PRIOR AGREEMENTS. This Agreement is voluntarily entered into
and supersedes and takes the place of any prior change in control, severance or
employment agreements between

<PAGE>

the parties hereto. The parties hereto expressly agree and hereby declare that
any and all prior change in control, severance or employment agreements between
the parties are terminated and of no force or effect.

         17.      COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original but all of which
together will constitute one and the same agreement.

<PAGE>

         IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
executed and delivered as of the date first above written.

                                    SOUTHWEST BANCORPORATION OF TEXAS, INC.

                                    By: /s/ Paul B. Murphy
                                    ---------------------------------------
                                             Paul B. Murphy, Jr.

                                    EXECUTIVE:

                                    /s/ Kenneth Olan
                                    ---------------------------------------
<PAGE>

                           CHANGE IN CONTROL AGREEMENT

         This CHANGE IN CONTROL AGREEMENT (Agreement), effective as of January
1, 2001 (the Effective Date), by and between Southwest Bancorporation of Texas,
Inc., a Texas corporation (the Company), and Barbara Vilutis. (the Executive);

                              W I T N E S S E T H:

         WHEREAS, the Employee is an officer of the Company or its wholly-owned
subsidiary, Southwest Bank of Texas National Association (the Bank) and has made
and/or is expected to make or continue to make major contributions to the
profitability, growth and financial strength of the Company and the Bank;

         WHEREAS, references herein to the Employee's employment by the Company
shall also mean his or her employment by the Bank, and references herein to
payments of any nature to be made by the Company to the Employee shall mean that
either the Company will make such payments or it will cause the Bank to make
such payments to the Employee;

         WHEREAS, the Company desires to assure itself of both present and
future continuity of management in the event of a Change in Control (as defined
hereafter) and desires to establish certain minimum compensation rights of its
key officers, including the Employee, applicable in the event of a Change in
Control;

         WHEREAS, the Company wishes to ensure that its key officers are not
practically disabled from discharging their duties upon a Change in Control;

         WHEREAS, this Agreement is not intended to alter materially the
compensation and benefits which the Employee could reasonably expect to receive
from the Company or the Bank absent a Change in Control and, accordingly,
although effective and binding as of the date hereof, this Agreement shall
become operative only upon the occurrence of a Change of Control; and

         WHEREAS, the Employee is willing to render services to the Company and
the Bank on the terms and subject to the conditions set forth in this Agreement;

         NOW, THEREFORE, the Company and the Employee agree as follows:

         1.       OPERATION OF AGREEMENT.

                  a)       This Agreement shall be effective and binding as of
         the Effective Date, but, anything in this Agreement to the contrary
         notwithstanding, this Agreement shall not be operative unless and until
         there shall have occurred a Change in Control.
<PAGE>

                  For purposes of this Agreement, a Change in Control shall have
         occurred if at any time during the Term (as that term is hereafter
         defined) any of the following events shall occur:

                           i)       The Company is merged, consolidated or
                  reorganized into or with or sells all or substantially all of
                  its assets to another corporation or other legal person, and
                  as a result of such merger, consolidation, reorganization or
                  sale (A) less than a majority of the combined voting power of
                  the then-outstanding securities of such corporation or person
                  immediately after such transaction are held in the aggregate
                  by the holders of Voting Stock (as that term is hereinafter
                  defined) of the Company immediately prior to such transaction
                  and (B) it is intended that persons serving as Directors of
                  the Company immediately prior to the transaction will
                  constitute none of or less than a majority of the Directors of
                  the other corporation or legal person after consummation of
                  the transaction; or

                           ii)      If during any one (1) year period,
                  individuals who at the beginning of any such period constitute
                  the Directors of the Company cease for any reason to
                  constitute at least a majority thereof, unless the election,
                  or the nomination for election by the Company's shareholders,
                  of each Director of the Company first elected during such
                  period was approved by a vote of at least two-thirds of the
                  Directors of the Company then still in office who were
                  Directors of the Company at the beginning of any such period.

                  b)       Upon occurrence of a Change in Control at any time
         during the Term, this Agreement shall become immediately operative.

                  c)       The period during which this Agreement shall be in
         effect (the Term) shall commence as of the date hereof and shall expire
         as of the later of (i) the close of business on December 31, 2002, and
         (ii) the expiration of the Period of Employment (as that term is
         hereinafter defined); provided, however, that (A) commencing on
         December 31, 2002, and the last day of each of the Company's Fiscal
         Years thereafter, the Term of this Agreement shall automatically be
         extended for an additional year unless, not later than the last day of
         the immediately preceding September, the Company or the Employee shall
         have given notice that it or he, as the case may be, does not wish to
         have the Term extended and (B) subject to Section 9 hereof, if, prior
         to a Change in Control, the Employee ceases for any reason to be an
         employee of the Company, thereupon the Term shall be deemed to have
         expired and this Agreement shall immediately terminate and be of no
         further effect.

         2.       EMPLOYMENT; PERIOD OF EMPLOYMENT.

                  a)       Subject to the terms and conditions of this
         Agreement, upon the occurrence of a Change in Control, the Company
         shall continue the Employee in its employ and the Employee shall remain
         in the employ of the Company for the period set forth in Section 2(b)
         hereof (the Period of Employment). Throughout the Period of Employment,
         the Employee shall devote substantially all of his time during normal
         business hours (subject to vacations, sick leave and other absences in
         accordance with the

<PAGE>

         policies of the Company as in effect for senior executives immediately
         prior to the Change in Control) to the business and affairs of the
         Company, but nothing in this Agreement shall preclude the Employee from
         devoting reasonable periods of time during normal business hours to (i)
         serving as a director, trustee or member of or participant in any
         organization or business so long as such organization or business is
         not engaged, directly or indirectly, in the business of commercial
         banking in competition with the business of the Company, (ii) engaging
         in charitable and community activities, or (iii) managing his personal
         investments.

                  b)       The Period of Employment shall commence on the date
         of an occurrence of a Change in Control and, subject only to the
         provisions of Section 4 hereof, shall continue until the earlier of (i)
         the expiration of the second anniversary of the occurrence of the
         Change in Control or (ii) the Employee's death.

         3.       COMPENSATION DURING PERIOD OF EMPLOYMENT.

                  a)       Upon the occurrence of a Change in Control, the
         Employee shall receive during the Period of Employment (i) annual base
         salary at a rate not less than the Employees annual fixed or base
         compensation payable monthly or otherwise as in effect for senior
         executives of the Company immediately prior to the occurrence of a
         Change in Control or such higher rate as may be determined from time to
         time by the Board of Directors of the Company (the Board) or the
         Compensation Committee thereof (the Committee) (which base salary at
         such rate is herein referred to as Base Pay) and (ii) an annual cash
         bonus in an amount determined for the Employee in accordance with the
         Company's incentive compensation plan or plans in effect at the time of
         the Change in Control or in accordance with any bonus, incentive,
         profit-sharing, performance, discretionary pay or similar policy, plan,
         program or arrangement of the Company or any successor thereto
         providing benefits at least as great as the benefits payable thereunder
         prior to the Change in Control (Incentive Pay); provided, however, that
         nothing herein shall preclude a change in the mix between Base Pay and
         Incentive Pay so long as the aggregate cash compensation received by
         the Employee in any one calendar year is not reduced in connection
         therewith or as a result thereof and, provided further, however, that
         in no event shall any increase in the Employee's aggregate cash
         compensation or any portion thereof in any way diminish any other
         obligation of the Company under this Agreement.

                  b)       For his service pursuant to Section 2(a) hereof,
         during the Period of Employment the Employee shall, if and on the same
         basis as he participated therein immediately prior to the Change in
         Control, be a full participant in, and shall be entitled to the
         perquisites, benefits and service credit for benefits as provided under
         any and all employee retirement income and welfare benefit policies,
         plans, programs or arrangements in which senior executives of the
         Company participate, including without limitation any stock option,
         stock purchase, stock appreciation, savings, pension, supplemental
         executive retirement or other retirement income or welfare benefit,
         deferred compensation, incentive compensation, group and/or executive
         life, accident, health, dental, medical/hospital or other insurance
         (whether funded by actual insurance or self-insured by the Company),
         disability, salary continuation, expense reimbursement and

<PAGE>

         other employee benefit policies, plans, programs or arrangements that
         may now exist or any equivalent successor policies, plans, programs or
         arrangements that may be adopted hereafter by the Company providing
         perquisites, benefits and service credit for benefits at least as great
         as are payable thereunder prior to a Change in Control(collectively,
         Employee Benefits); provided, however, that the Employee's rights
         thereunder shall be governed by the terms thereof and shall not be
         enlarged hereunder or otherwise affected hereby. Subject to the proviso
         in the immediately preceding sentence, if and to the extent such
         perquisites, benefits or service credit for benefits are not payable or
         provided under any such policy, plan, program or arrangement as a
         result of the amendment or termination thereof, then the Company shall
         itself pay or provide therefor. Nothing in this Agreement shall
         preclude improvement or enhancement of any such Employee Benefits,
         provided that no such improvement shall in any way diminish any other
         obligation of the Company under this Agreement.

                  c)       The Company has determined that the amounts payable
         pursuant to this Section 3 constitute reasonable compensation.
         Accordingly, notwithstanding any other provision hereof, unless such
         action would be expressly prohibited by applicable law, if any amount
         paid or payable pursuant to this Section 3 is subject to the excise tax
         imposed by Section 4999 of the Internal Revenue Code of 1986, as
         amended (the Code), the Company will pay to the Employee an additional
         amount in cash equal to the amount necessary to cause the aggregate
         remuneration received by the Employee under this Section 3, including
         such additional cash payment (net of all federal, state and local
         income taxes and all taxes payable as the result of the application of
         Sections 280G and 4999 of the Code) to be equal to the aggregate
         remuneration the Employee would have received under this Section 3,
         excluding such additional payment (net of all federal, state and local
         income taxes), as if Sections 280G and 4999 of the Code (and any
         successor provisions thereto) had not been enacted into law.

         4.       TERMINATION FOLLOWING A CHANGE IN CONTROL.

                  a)       In the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Company during the
         Period of Employment only upon the occurrence of one or more of the
         following events:

                           i)       If the Employee is unable to perform the
                  essential functions of his job (with or without reasonable
                  accommodation) because he has become permanently disabled
                  within the meaning of, and actually begins to receive
                  disability benefits pursuant to, the long-term disability plan
                  in effect for senior executives or, if applicable, employees
                  of the Company immediately prior to the Change in Control; or

                           ii)      For Cause, which for purposes of this
                  Agreement shall mean that, prior to any termination pursuant
                  to Section 4(b) hereof, the Employee shall have committed:

                                    A)       Gross negligence or willful
                           misconduct in connection with his duties or in the
                           course of his employment with the Company;

<PAGE>

                                    B)       an act of fraud, embezzlement or
                           theft in connection with his duties or in the course
                           of his employment with the Company;

                                    C)       intentional wrongful damage to
                           property of the Company;

                                    D)       intentional wrongful disclosure of
                           secret processes or confidential information of the
                           Company;

                                    E)       intentional wrongful engagement in
                           any Competitive Activity; or

                                    F)       an act leading to a conviction of a
                           felony or a misdemeanor involving moral turpitude.

                  For purposes of this Agreement, no act, or failure to act, on
         the part of the Employee shall be deemed intentional if it was due
         primarily to an error in judgment or negligence, but shall be deemed
         intentional only if done, or omitted to be done, by the Employee not in
         good faith and without reasonable belief that his action or omission
         was in the best interest of the Company. Notwithstanding the foregoing,
         the Employee shall not be deemed to have been terminated for Cause
         hereunder unless and until there shall have been delivered to the
         Employee a copy of a resolution duly adopted by the affirmative vote of
         not less than three-quarters of the Board then in office at a meeting
         of the Board called and held for such purpose (after reasonable notice
         to the Employee and an opportunity for the Employee, together with his
         counsel, to be heard before the Board), finding that, in the good faith
         opinion of the Board, the Employee had committed an act set forth above
         in this Section 4(a)(ii) and specifying the particulars thereof in
         detail. Nothing herein shall limit the right of the Employee or his
         beneficiaries to contest the validity or propriety of any such
         determination.

                  b)       in the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Employee during the
         Period of Employment with the right to benefits as provided in Section
         5 hereof upon the occurrence of one or more of the following events:

                           i)       Any termination by the Company of the
                  employment of the Employee for any reason other than for Cause
                  or as a result of the death of the Employee or by reason of
                  the Employee's disability and the actual receipt of disability
                  benefits in accordance with Section 4(a)(i) hereof; or

                           ii)      Termination by the Employee of his
                  employment with the Company upon the occurrence of any of the
                  following events:

                                    A)       A reduction in the aggregate of the
                           Employee's Base Pay and Incentive Pay received from
                           the Company, or the termination of the Employee's
                           rights to any Employee Benefits to which he was
                           entitled immediately prior to the Change in Control
                           or a reduction in scope or

<PAGE>

                           value thereof without the prior written consent of
                           the Employee, any of which is not remedied within 10
                           calendar days after receipt by the Company of written
                           notice from the Employee of such change, reduction or
                           termination, as the case may be;

                                    B)       The liquidation, dissolution,
                           merger, consolidation or reorganization of the
                           Company or transfer of all or a significant portion
                           of its business and/or assets, unless the successor
                           or successors (by liquidation, merger, consolidation,
                           reorganization or otherwise) to which all or a
                           significant portion of its business and/or assets
                           have been transferred (directly or by operation of
                           law) shall have assumed all duties and obligations of
                           the Company under this Agreement pursuant to Section
                           11 hereof;

                                    C)       The Company requires the Employee
                           to have his principal location of work changed to any
                           location which is in excess of 50 miles from the
                           location thereof immediately prior to the Change of
                           Control or to travel away from his office in the
                           course of discharging his responsibilities or duties
                           hereunder significantly more (in terms of either
                           consecutive days or aggregate days in any calendar
                           year) than was required of him prior to the Change of
                           Control without, in either case, his prior consent;
                           or

                                    D)       Any material breach of this
                           Agreement by the Company or any successor thereto.

                  c)       A termination by the Company pursuant to Section 4(a)
         hereof or by the Employee pursuant to Section 4(b) hereof shall not
         affect any rights which the Employee may have pursuant to any
         agreement, policy, plan, program or arrangement of the Company
         providing Employee Benefits, which rights shall be governed by the
         terms thereof. If this Agreement or the employment of the Employee is
         terminated under circumstances in which the Employee is not entitled to
         any payments under Sections 3 or 5 hereof, the Employee shall have no
         further obligation or liability to the Company hereunder with respect
         to his prior or any future employment by the Company.

         5.       SEVERANCE COMPENSATION.

                  a)       If, following the occurrence of a Change in Control,
         the Company shall terminate the Employee's employment during the Period
         of Employment other than pursuant to Section 4(a) hereof, or if the
         Employee shall terminate his employment pursuant to Section 4(b)
         hereof, the Company shall pay to the Employee the amount specified in
         Section 5(a)(i) hereof within ten business days after the date (the
         Termination Date) that the Employee's employment is terminated (the
         effective date of which shall be the date of termination, or such other
         date that may be specified by the Employee if the termination is
         pursuant to Section 4(b) hereof):

                           i)       In lieu of any further payments to the
                  Employee for periods subsequent to the Termination Date, but
                  without affecting the rights of the

<PAGE>

                  Employee referred to in Section 5(b) hereof, a lump sum
                  payment (the Severance Payment) in an amount equal to the
                  present value (using a discount rate required to be utilized
                  for purposes of computations under Section 280G of the Code or
                  any successor provision thereto, or if no such rate is so
                  required to be used, a rate equal to the then-applicable
                  interest rate prescribed by the Pension Benefit Guarantee
                  Corporation for benefit valuations in connection with
                  non-multiemployer pension plan terminations assuming the
                  immediate commencement of benefit payments (the Discount Rate)
                  of the sum of (A) the Base Pay (at the highest rate in effect
                  during the Term prior to the Termination Date) for one year,
                  plus (B) the Incentive Pay for one year (based upon the
                  greatest amount of Incentive Pay paid or payable to the
                  Employee for any year during the three calendar years
                  preceding the year in which the Termination Date occurs);
                  provided, however, that in no event will the present value (as
                  determined under Section 280G of the Code or any successor
                  provision thereto) of the amount otherwise payable hereunder,
                  when added to the present value (as determined under Section
                  280G of the Code or any successor provision thereto) of any
                  other parachute payments (as that term is defined in Section
                  280G of the Code (without regard to Section 280G(b)(2)(A)(ii)
                  thereof) or any successor provision thereto) from the Company,
                  exceed an amount (the A299% Amount) equal to 299% of the
                  Employee's base amount (as that term is defined in Section
                  280G of the Code or any successor provision thereto) and if
                  the amount otherwise payable hereunder would exceed the 299%
                  Amount, the Severance Payment shall be reduced to the extent
                  necessary so that the aggregate present value determined in
                  the previous clause does not exceed the 299% Amount.

                           ii)      The determination of whether any amount
                  otherwise payable under Section 5(a)(i) causes the 299% Amount
                  to be exceeded shall be made, if requested by the Employee or
                  the Company, by tax counsel selected by the Company and
                  reasonably acceptable to the Employee. The costs of obtaining
                  such determination shall be borne by the Company. The fact
                  that the Employee shall have his right to the Severance
                  Payment reduced as a result of the existence of the
                  limitations contained in this Section 5(a) shall not limit or
                  otherwise affect any rights of the Employee to any Employee
                  Benefit, or other right arising other than pursuant to this
                  Agreement. Without limiting the generality of the foregoing,
                  upon the Employee's termination of employment as provided in
                  this Section 5, the Company shall pay over to him all vested
                  benefits to which he is entitled under and in accordance with
                  the terms of the Company's employee savings, stock ownership,
                  supplemental executive retirement and similar Plans in the
                  event such payments are not otherwise made in accordance with
                  the terms of such plans.

                           iii)     Except to the extent that the payments or
                  benefits pursuant to this Section 5(a)(iii) would result in a
                  reduction of the amount of the Severance Payment because they
                  would exceed the 299% Amount, (A) for the remainder of the
                  Period of Employment the Company shall arrange to provide the
                  Employee with Employee Benefits substantially similar to those
                  which the Employee was receiving or entitled to receive
                  immediately prior to the Termination Date (and if and to the
                  extent that such benefits shall not or cannot be paid or
                  provided under

<PAGE>

                  any policy, plan, program or arrangement of the Company solely
                  due to the fact that the Employee is no longer an officer or
                  employee of the Company, then the Company shall itself pay or
                  provide for the payment to the Employee, his dependents and
                  beneficiaries, such Employee Benefits) and (B) without
                  limiting the generality of the foregoing, the remainder of the
                  Period of Employment shall be considered service with the
                  Company for the purpose of service credits under the Company's
                  retirement income, supplemental executive retirement and other
                  benefit plans of the Company applicable to the Employee or his
                  beneficiaries immediately prior to the Termination Date.
                  Without otherwise limiting the purposes or effect of Section 6
                  hereof, Employee Benefits payable to the Employee pursuant to
                  this Section 5(a)(iii) by reason of any welfare benefit plan
                  of the Company (as the term welfare benefit plan is defined in
                  Section 3(1) of the Employee Retirement Income Security Act of
                  1974, as amended) shall be reduced to the extent comparable
                  welfare benefits are actually received by the Employee from
                  another employer during such period following the Employee's
                  Termination Date until the expiration of the Period of
                  Employment.

                           iv)      Notwithstanding any provision of the Section
                  5(a) to the contrary, in the event the benefits intended to be
                  provided to the Employee pursuant to Section 5(a)(iii) hereof
                  are required to be reduced in whole or in part because the
                  value of such Employee Benefits, when added to the amount of
                  the Severance Payment under Section 5(a)(i), would exceed 299%
                  Amount, the Employee shall have the option to elect to
                  receive, in lieu of all or a portion of the Severance Payment
                  provided in Section 5(a)(i) hereof, one or more Employee
                  Benefits, provided that (A) prior to the receipt of any
                  payment under Section 5(a)(i) hereof, the Employee notifies
                  the Company of the Employee Benefit or Employee Benefits so
                  elected to be received, and (B) in no event shall the
                  aggregate present value of the payments in the nature of
                  compensation (as that phrase is used in Section 280G of the
                  Code) received by the Employee as a result of the receipt of
                  such Employee Benefits, when added to the remaining portion of
                  the Severance Payment, if any, to be received by the Employee,
                  exceed the 299% Amount.

                           v)       In addition to all other compensation due to
                  the Employee, the following shall occur immediately following
                  the occurrence of a Change in Control:

                                    A)       all Company stock options held by
                           the Employee prior to a Change in Control shall
                           become fully exercisable, regardless of whether or
                           not the vesting conditions set forth in the relevant
                           stock option agreements have been satisfied in full;
                           and

                                    B)       all restrictions on any restricted
                           Company stock granted to the Employee prior to a
                           Change in Control shall be removed and the stock
                           shall be freely transferable, regardless of whether
                           the conditions set forth in the relevant restricted
                           stock agreements have been satisfied in full.

                  b)       Upon written notice given by the Employee to the
         Company prior to the receipt of any payment pursuant to Section 5(a)
         hereof, the Employee, at his sole option, without reduction

<PAGE>

         to reflect the present value of such amounts as aforesaid, may elect to
         have all or any of the Severance Payment payable pursuant to Section
         5(a)(i) hereof paid to him on a quarterly or monthly basis during the
         remainder of the Period of Employment.

                  c)       There shall be no right of set-off or counterclaim in
         respect of any claim, debt or obligation against any payment to or
         benefit for the Employee provided for in this Agreement.

                  d)       Without limiting the rights of the Employee at law or
         in equity, if the Company fails to make any payment required to be made
         hereunder on a timely basis, the Company shall pay interest on the
         amount thereof at an annualized rate of interest equal to the
         then-applicable Discount Rate or, if lesser, the highest rate allowed
         by applicable usury laws.

         6.       NO MITIGATION OBLIGATION. The Company hereby acknowledges that
it will be difficult, and may be impossible, for the Employee to find reasonably
comparable employment following the Termination Date. Accordingly, the parties
hereto expressly agree that the payment of the severance compensation by the
Company to the Employee in accordance with the terms of this Agreement will be
liquidated damages, and that the Employee shall not be required to mitigate the
amount of any payment provided for in this Agreement by seeking other employment
or otherwise, nor shall any profits, income, earnings or other benefits from any
source whatsoever create any mitigation, offset, reduction or any other
obligation on the part of the Employee hereunder or otherwise, except as
expressly provided in Section 5(a)(iii) hereof.

         7.       COMPETITIVE ACTIVITY. During a period ending six months
following the Termination Date, if the Executive shall have received or shall be
receiving benefits under Section 5(a) hereof, the Executive shall not, without
the prior written consent by the Company, directly or indirectly engage in the
business of commercial banking in competition with the business of the Company
within Harris County, Fort Bend County and Montgomery County, Texas and any
other geographical area served by the Company during the twelve (12) month
period immediately preceding termination of employment nor will the Executive
engage, within this geographical area, in the design, development, distribution,
or sale of a product or service in competition with any product or service being
marketed or planned by the Company at such time, the plans, designs or
specifications of which have been revealed to the Executive. The Executive
acknowledges that these limited prohibitions are reasonable as to time,
geographical area and scope of activities to be restrained and that the limited
prohibitions do not impose a greater restraint than is necessary to protect the
Company's goodwill, proprietary information and other business interests.
Competitive Activity shall mean the prohibitions set forth above in this Section
7, but shall not include (i) the mere ownership of securities in any such
enterprise and exercise of rights appurtenant thereto or (ii) participation in
management of any such enterprise or business operation thereof other than in
connection with the competitive operation of such enterprise.

         8.       LEGAL FEES AND EXPENSES. In the event of a breach of this
Agreement by the Company, it is the intent of the Company that the Employee not
be required to incur the expenses associated with the enforcement of his rights
under this Agreement by litigation or other legal action because the cost and
expense thereof would substantially detract from the benefits intended to be
extended to the Employee hereunder. Accordingly, if the Company fails to comply
with any of its obligations under this Agreement or in the event that the
Company or any other person takes any action to declare this Agreement void or
unenforceable, or institutes

<PAGE>

any litigation designed to deny, or to recover from, the Employee the benefits
intended to be provided to the Employee hereunder, the Company irrevocably
authorizes the Employee from time to time to retain counsel of his choice, at
the expense of the Company as hereafter provided, to represent the Employee in
connection with the initiation or defense of any litigation or other legal
action, whether by or against the Company or any Director, officer, shareholder
or other person affiliated with the Company, in any jurisdiction.
Notwithstanding any existing or prior attorney-client relationship between the
Company and such counsel, the Company irrevocably consents to the Employee's
entering into an attorney-client relationship with such counsel (other than
Vinson & Elkins L.L.P.), and in that connection the Company and the Employee
agree that a confidential relationship shall exist between the Employee and such
counsel. The Company shall pay or cause to be paid and shall be solely
responsible for any and all attorneys and related fees and expenses incurred by
the Employee as a result of the Company's failure to perform this Agreement or
any provision thereof or as a result of the Company or any person contesting the
validity or enforceability of this Agreement or any provision thereof as
aforesaid. If the Company should prevail in any litigation regarding this
Agreement, however, the Company shall not be responsible for any attorneys and
related fees and expenses incurred by Employee in connection with such
litigation.

         9.       EMPLOYMENT RIGHTS. Nothing expressed or implied in this
Agreement shall create any right or duty on the part of the Company or the
Employee to have the Employee remain in the employment of the Company prior to
any Change in Control; provided, however, that any termination of employment of
the Employee or removal of the Employee as an Officer of the Company following
the commencement of any discussion with a third person that ultimately results
in a Change in Control shall be deemed to be a termination or removal of the
Employee after a Change in Control for purposes of this Agreement.

         10.      WITHHOLDING OF TAXES. The Company may withhold from any
amounts payable under this Agreement all federal, state, city or other taxes as
shall be required pursuant to any law or government regulation or ruling.

         11.      SUCCESSORS AND BINDING AGREEMENT.

                  a)       The Company shall require any successor (whether
         direct or indirect, by purchase, merger, consolidation, reorganization
         or otherwise) to all or substantially all of the business and/or assets
         of the Company to execute an agreement pursuant to which the successor
         expressly assumes all of the liabilities and obligations of the Company
         hereunder and agrees to perform this Agreement in the same manner and
         to the same extent the Company would be required to perform if no such
         succession had taken place. This Agreement shall be binding upon and
         inure to the benefit of the Company and any successor to the Company,
         including without limitation any persons acquiring directly or
         indirectly all or substantially all of the business and/or assets of
         the Company whether by purchase, merger, consolidation, reorganization
         or otherwise (and such successor shall thereafter be deemed the Company
         for the purposes of this Agreement), but shall not otherwise be
         assignable, transferable or delegable by the Company.

<PAGE>

                  b)       This Agreement shall inure to the benefit of and be
         enforceable by the Employee's personal or legal representatives,
         executors, administrators, successors, heirs, distributees and/or
         legatees.

                  c)       This Agreement is personal in nature and neither of
         the parties hereto shall, without the consent of the other, assign,
         transfer or delegate this Agreement or any rights or obligations
         hereunder except as expressly provided in Section 11(a) hereof. Without
         limiting the generality of the foregoing, the Employee's right to
         receive payments hereunder shall not be assignable, transferable or
         delegable, whether by pledge, creation of a security interest or
         otherwise, other than by a transfer by the Employee's will or by the
         laws of descent and distribution and, in the event of any attempted
         assignment or transfer contrary to this Section 11(c), the Company
         shall have no liability to pay any amount so attempted to be assigned,
         transferred or delegated.

                  d)       The Company and the Employee recognize that each
         Party will have no adequate remedy at law for breach by the other of
         any of the agreements contained herein and, in the event of any such
         breach, the Company and the Employee hereby agree and consent that the
         other shall be entitled to a decree of specific performance, mandamus
         or other appropriate remedy to enforce performance of this Agreement.

         12.      NOTICE. For all purposes of this Agreement, all communications
provided for herein shall be in writing and shall be deemed to have been duly
given when delivered or three business days after having been mailed by United
States registered or certified mail, return receipt requested, postage prepaid,
addressed to the Company (to the attention of the Secretary of the Company) at
its principal executive office and to the Employee at his principal residence,
or to such other address as any party may have furnished to the other in writing
and in accordance herewith, except that notices of change of address shall be
effective only upon receipt.

         13.      GOVERNING LAW. The validity, interpretation, construction and
performance of this Agreement shall be governed by the laws of the State of
Texas, without giving effect to the principles of conflict of laws of such
State.

         14.      VALIDITY. If any provision of this Agreement or the
application of any provision hereof to any person or circumstances is held
invalid, unenforceable or otherwise illegal, the remainder of this Agreement and
the application of such provision to any other person or circumstances shall not
be affected, and the provision so held to be invalid, unenforceable or otherwise
illegal shall be reformed to the extent (and only to the extent) necessary to
make it enforceable, valid and legal.

         15.      MISCELLANEOUS. No provisions of this Agreement may be
modified, waived or discharged unless such waiver, modification or discharge is
agreed to in writing signed by the Employee and the Company. No waiver by either
party hereto at any time of any breach by the other party hereto or compliance
with any condition or provision of this Agreement to be performed by such other
party shall be deemed a waiver of similar or dissimilar provisions or conditions
at the same or at any prior or subsequent time. No agreements or
representations, oral or otherwise, expressed or implied with respect to the
subject matter hereof have been made by either party which are not set forth
expressly in this Agreement.

<PAGE>

         16.      PRIOR AGREEMENTS. This Agreement is voluntarily entered into
and supersedes and takes the place of any prior change in control, severance or
employment agreements between the parties hereto. The parties hereto expressly
agree and hereby declare that any and all prior change in control, severance or
employment agreements between the parties are terminated and of no force or
effect.

         17.      COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original but all of which
together will constitute one and the same agreement.

<PAGE>

         IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
executed and delivered as of the date first above written.

                                    SOUTHWEST BANCORPORATION OF TEXAS, INC.

                                    By: /s/ Paul B. Murphy
                                    ---------------------------------------
                                             Paul B. Murphy, Jr.

                                    EXECUTIVE:

                                    /s/  Barbara Vilutis
                                    ---------------------------------------
<PAGE>

                           CHANGE IN CONTROL AGREEMENT

         This CHANGE IN CONTROL AGREEMENT (Agreement), effective as of January
1, 2001 (the Effective Date), by and between Southwest Bancorporation of Texas,
Inc., a Texas corporation (the Company), and Lane Ward. (the Executive);

                              W I T N E S S E T H:

         WHEREAS, the Employee is an officer of the Company or its wholly-owned
subsidiary, Southwest Bank of Texas National Association (the Bank) and has made
and/or is expected to make or continue to make major contributions to the
profitability, growth and financial strength of the Company and the Bank;

         WHEREAS, references herein to the Employee's employment by the Company
shall also mean his or her employment by the Bank, and references herein to
payments of any nature to be made by the Company to the Employee shall mean that
either the Company will make such payments or it will cause the Bank to make
such payments to the Employee;

         WHEREAS, the Company desires to assure itself of both present and
future continuity of management in the event of a Change in Control (as defined
hereafter) and desires to establish certain minimum compensation rights of its
key officers, including the Employee, applicable in the event of a Change in
Control;

         WHEREAS, the Company wishes to ensure that its key officers are not
practically disabled from discharging their duties upon a Change in Control;

         WHEREAS, this Agreement is not intended to alter materially the
compensation and benefits which the Employee could reasonably expect to receive
from the Company or the Bank absent a Change in Control and, accordingly,
although effective and binding as of the date hereof, this Agreement shall
become operative only upon the occurrence of a Change of Control; and

         WHEREAS, the Employee is willing to render services to the Company and
the Bank on the terms and subject to the conditions set forth in this Agreement;

         NOW, THEREFORE, the Company and the Employee agree as follows:

         1.       OPERATION OF AGREEMENT.

                  a)       This Agreement shall be effective and binding as of
         the Effective Date, but, anything in this Agreement to the contrary
         notwithstanding, this Agreement shall not be operative unless and
         until there shall have occurred a Change in Control.
<PAGE>

                  For purposes of this Agreement, a Change in Control shall have
         occurred if at any time during the Term (as that term is hereafter
         defined) any of the following events shall occur:

                           i)       The Company is merged, consolidated or
                  reorganized into or with or sells all or substantially all of
                  its assets to another corporation or other legal person, and
                  as a result of such merger, consolidation, reorganization or
                  sale (A) less than a majority of the combined voting power of
                  the then-outstanding securities of such corporation or person
                  immediately after such transaction are held in the aggregate
                  by the holders of Voting Stock (as that term is hereinafter
                  defined) of the Company immediately prior to such transaction
                  and (B) it is intended that persons serving as Directors of
                  the Company immediately prior to the transaction will
                  constitute none of or less than a majority of the Directors of
                  the other corporation or legal person after consummation of
                  the transaction; or

                           ii)      If during any one (1) year period,
                  individuals who at the beginning of any such period constitute
                  the Directors of the Company cease for any reason to
                  constitute at least a majority thereof, unless the election,
                  or the nomination for election by the Company's shareholders,
                  of each Director of the Company first elected during such
                  period was approved by a vote of at least two-thirds of the
                  Directors of the Company then still in office who were
                  Directors of the Company at the beginning of any such period.

                  b)       Upon occurrence of a Change in Control at any time
         during the Term, this Agreement shall become immediately operative.

                  c)       The period during which this Agreement shall be in
         effect (the Term) shall commence as of the date hereof and shall expire
         as of the later of (i) the close of business on December 31, 2002, and
         (ii) the expiration of the Period of Employment (as that term is
         hereinafter defined); provided, however, that (A) commencing on
         December 31, 2002, and the last day of each of the Company's Fiscal
         Years thereafter, the Term of this Agreement shall automatically be
         extended for an additional year unless, not later than the last day of
         the immediately preceding September, the Company or the Employee shall
         have given notice that it or he, as the case may be, does not wish to
         have the Term extended and (B) subject to Section 9 hereof, if, prior
         to a Change in Control, the Employee ceases for any reason to be an
         employee of the Company, thereupon the Term shall be deemed to have
         expired and this Agreement shall immediately terminate and be of no
         further effect.

         2.       EMPLOYMENT; PERIOD OF EMPLOYMENT.

                  a)       Subject to the terms and conditions of this
         Agreement, upon the occurrence of a Change in Control, the Company
         shall continue the Employee in its employ and the Employee shall remain
         in the employ of the Company for the period set forth in Section 2(b)
         hereof (the Period of Employment). Throughout the Period of Employment,
         the Employee shall devote substantially all of his time during normal
         business hours (subject to vacations, sick leave and other absences in
         accordance with the

<PAGE>

         policies of the Company as in effect for senior executives immediately
         prior to the Change in Control) to the business and affairs of the
         Company, but nothing in this Agreement shall preclude the Employee from
         devoting reasonable periods of time during normal business hours to (i)
         serving as a director, trustee or member of or participant in any
         organization or business so long as such organization or business is
         not engaged, directly or indirectly, in the business of commercial
         banking in competition with the business of the Company, (ii) engaging
         in charitable and community activities, or (iii) managing his personal
         investments.

                  b)       The Period of Employment shall commence on the date
         of an occurrence of a Change in Control and, subject only to the
         provisions of Section 4 hereof, shall continue until the earlier of (i)
         the expiration of the second anniversary of the occurrence of the
         Change in Control or (ii) the Employee's death.

         3.       COMPENSATION DURING PERIOD OF EMPLOYMENT.

                  a)       Upon the occurrence of a Change in Control, the
         Employee shall receive during the Period of Employment (i) annual base
         salary at a rate not less than the Employees annual fixed or base
         compensation payable monthly or otherwise as in effect for senior
         executives of the Company immediately prior to the occurrence of a
         Change in Control or such higher rate as may be determined from time to
         time by the Board of Directors of the Company (the Board) or the
         Compensation Committee thereof (the Committee) (which base salary at
         such rate is herein referred to as Base Pay) and (ii) an annual cash
         bonus in an amount determined for the Employee in accordance with the
         Company's incentive compensation plan or plans in effect at the time of
         the Change in Control or in accordance with any bonus, incentive,
         profit-sharing, performance, discretionary pay or similar policy, plan,
         program or arrangement of the Company or any successor thereto
         providing benefits at least as great as the benefits payable thereunder
         prior to the Change in Control (Incentive Pay); provided, however, that
         nothing herein shall preclude a change in the mix between Base Pay and
         Incentive Pay so long as the aggregate cash compensation received by
         the Employee in any one calendar year is not reduced in connection
         therewith or as a result thereof and, provided further, however, that
         in no event shall any increase in the Employee's aggregate cash
         compensation or any portion thereof in any way diminish any other
         obligation of the Company under this Agreement.

                  b)       For his service pursuant to Section 2(a) hereof,
         during the Period of Employment the Employee shall, if and on the same
         basis as he participated therein immediately prior to the Change in
         Control, be a full participant in, and shall be entitled to the
         perquisites, benefits and service credit for benefits as provided under
         any and all employee retirement income and welfare benefit policies,
         plans, programs or arrangements in which senior executives of the
         Company participate, including without limitation any stock option,
         stock purchase, stock appreciation, savings, pension, supplemental
         executive retirement or other retirement income or welfare benefit,
         deferred compensation, incentive compensation, group and/or executive
         life, accident, health, dental, medical/hospital or other insurance
         (whether funded by actual insurance or self-insured by the Company),
         disability, salary continuation, expense reimbursement and

<PAGE>

         other employee benefit policies, plans, programs or arrangements that
         may now exist or any equivalent successor policies, plans, programs or
         arrangements that may be adopted hereafter by the Company providing
         perquisites, benefits and service credit for benefits at least as great
         as are payable thereunder prior to a Change in Control(collectively,
         Employee Benefits); provided, however, that the Employee's rights
         thereunder shall be governed by the terms thereof and shall not be
         enlarged hereunder or otherwise affected hereby. Subject to the proviso
         in the immediately preceding sentence, if and to the extent such
         perquisites, benefits or service credit for benefits are not payable or
         provided under any such policy, plan, program or arrangement as a
         result of the amendment or termination thereof, then the Company shall
         itself pay or provide therefor. Nothing in this Agreement shall
         preclude improvement or enhancement of any such Employee Benefits,
         provided that no such improvement shall in any way diminish any other
         obligation of the Company under this Agreement.

                  c)       The Company has determined that the amounts payable
         pursuant to this Section 3 constitute reasonable compensation.
         Accordingly, notwithstanding any other provision hereof, unless such
         action would be expressly prohibited by applicable law, if any amount
         paid or payable pursuant to this Section 3 is subject to the excise tax
         imposed by Section 4999 of the Internal Revenue Code of 1986, as
         amended (the Code), the Company will pay to the Employee an additional
         amount in cash equal to the amount necessary to cause the aggregate
         remuneration received by the Employee under this Section 3, including
         such additional cash payment (net of all federal, state and local
         income taxes and all taxes payable as the result of the application of
         Sections 280G and 4999 of the Code) to be equal to the aggregate
         remuneration the Employee would have received under this Section 3,
         excluding such additional payment (net of all federal, state and local
         income taxes), as if Sections 280G and 4999 of the Code (and any
         successor provisions thereto) had not been enacted into law.

         4.       TERMINATION FOLLOWING A CHANGE IN CONTROL.

                  a)       In the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Company during the
         Period of Employment only upon the occurrence of one or more of the
         following events:

                           i)       If the Employee is unable to perform the
                  essential functions of his job (with or without reasonable
                  accommodation) because he has become permanently disabled
                  within the meaning of, and actually begins to receive
                  disability benefits pursuant to, the long-term disability plan
                  in effect for senior executives or, if applicable, employees
                  of the Company immediately prior to the Change in Control; or

                           ii)      For Cause, which for purposes of this
                  Agreement shall mean that, prior to any termination pursuant
                  to Section 4(b) hereof, the Employee shall have committed:

                                    A)      Gross negligence or willful
                           misconduct in connection with his duties or in the
                           course of his employment with the Company;

<PAGE>

                                    B)      an act of fraud, embezzlement or
                           theft in connection with his duties or in the course
                           of his employment with the Company;

                                    C)      intentional wrongful damage to
                           property of the Company;

                                    D)      intentional wrongful disclosure of
                           secret processes or confidential information of the
                           Company;

                                    E)      intentional wrongful engagement in
                           any Competitive Activity; or

                                    F)      an act leading to a conviction of a
                           felony or a misdemeanor involving moral turpitude.

                  For purposes of this Agreement, no act, or failure to act, on
         the part of the Employee shall be deemed intentional if it was due
         primarily to an error in judgment or negligence, but shall be deemed
         intentional only if done, or omitted to be done, by the Employee not in
         good faith and without reasonable belief that his action or omission
         was in the best interest of the Company. Notwithstanding the foregoing,
         the Employee shall not be deemed to have been terminated for Cause
         hereunder unless and until there shall have been delivered to the
         Employee a copy of a resolution duly adopted by the affirmative vote of
         not less than three-quarters of the Board then in office at a meeting
         of the Board called and held for such purpose (after reasonable notice
         to the Employee and an opportunity for the Employee, together with his
         counsel, to be heard before the Board), finding that, in the good faith
         opinion of the Board, the Employee had committed an act set forth above
         in this Section 4(a)(ii) and specifying the particulars thereof in
         detail. Nothing herein shall limit the right of the Employee or his
         beneficiaries to contest the validity or propriety of any such
         determination.

                  b)       in the event of the occurrence of a Change in
         Control, this Agreement may be terminated by the Employee during the
         Period of Employment with the right to benefits as provided in Section
         5 hereof upon the occurrence of one or more of the following events:

                           i)       Any termination by the Company of the
                  employment of the Employee for any reason other than for Cause
                  or as a result of the death of the Employee or by reason of
                  the Employee's disability and the actual receipt of disability
                  benefits in accordance with Section 4(a)(i) hereof; or

                           ii)      Termination by the Employee of his
                  employment with the Company upon the occurrence of any of the
                  following events:

                                    A)      A reduction in the aggregate of the
                           Employee's Base Pay and Incentive Pay received from
                           the Company, or the termination of the Employee's
                           rights to any Employee Benefits to which he was
                           entitled immediately prior to the Change in Control
                           or a reduction in scope or

<PAGE>

                           value thereof without the prior written consent of
                           the Employee, any of which is not remedied within 10
                           calendar days after receipt by the Company of written
                           notice from the Employee of such change, reduction or
                           termination, as the case may be;

                                    B)      The liquidation, dissolution,
                           merger, consolidation or reorganization of the
                           Company or transfer of all or a significant portion
                           of its business and/or assets, unless the successor
                           or successors (by liquidation, merger, consolidation,
                           reorganization or otherwise) to which all or a
                           significant portion of its business and/or assets
                           have been transferred (directly or by operation of
                           law) shall have assumed all duties and obligations of
                           the Company under this Agreement pursuant to Section
                           11 hereof;

                                    C)      The Company requires the Employee to
                           have his principal location of work changed to any
                           location which is in excess of 50 miles from the
                           location thereof immediately prior to the Change of
                           Control or to travel away from his office in the
                           course of discharging his responsibilities or duties
                           hereunder significantly more (in terms of either
                           consecutive days or aggregate days in any calendar
                           year) than was required of him prior to the Change of
                           Control without, in either case, his prior consent;
                           or

                                    D)      Any material breach of this
                           Agreement by the Company or any successor thereto.

                  c)       A termination by the Company pursuant to Section 4(a)
         hereof or by the Employee pursuant to Section 4(b) hereof shall not
         affect any rights which the Employee may have pursuant to any
         agreement, policy, plan, program or arrangement of the Company
         providing Employee Benefits, which rights shall be governed by the
         terms thereof. If this Agreement or the employment of the Employee is
         terminated under circumstances in which the Employee is not entitled to
         any payments under Sections 3 or 5 hereof, the Employee shall have no
         further obligation or liability to the Company hereunder with respect
         to his prior or any future employment by the Company.

         5.       SEVERANCE COMPENSATION.

                  a)       If, following the occurrence of a Change in Control,
         the Company shall terminate the Employee's employment during the Period
         of Employment other than pursuant to Section 4(a) hereof, or if the
         Employee shall terminate his employment pursuant to Section 4(b)
         hereof, the Company shall pay to the Employee the amount specified in
         Section 5(a)(i) hereof within ten business days after the date (the
         Termination Date) that the Employee's employment is terminated (the
         effective date of which shall be the date of termination, or such other
         date that may be specified by the Employee if the termination is
         pursuant to Section 4(b) hereof):

                           i)       In lieu of any further payments to the
                  Employee for periods subsequent to the Termination Date, but
                  without affecting the rights of the

<PAGE>

                  Employee referred to in Section 5(b) hereof, a lump sum
                  payment (the Severance Payment) in an amount equal to the
                  present value (using a discount rate required to be utilized
                  for purposes of computations under Section 280G of the Code or
                  any successor provision thereto, or if no such rate is so
                  required to be used, a rate equal to the then-applicable
                  interest rate prescribed by the Pension Benefit Guarantee
                  Corporation for benefit valuations in connection with
                  non-multiemployer pension plan terminations assuming the
                  immediate commencement of benefit payments (the Discount Rate)
                  of the sum of (A) the Base Pay (at the highest rate in effect
                  during the Term prior to the Termination Date) for one year,
                  plus (B) the Incentive Pay for one year (based upon the
                  greatest amount of Incentive Pay paid or payable to the
                  Employee for any year during the three calendar years
                  preceding the year in which the Termination Date occurs);
                  provided, however, that in no event will the present value (as
                  determined under Section 280G of the Code or any successor
                  provision thereto) of the amount otherwise payable hereunder,
                  when added to the present value (as determined under Section
                  280G of the Code or any successor provision thereto) of any
                  other parachute payments (as that term is defined in Section
                  280G of the Code (without regard to Section 280G(b)(2)(A)(ii)
                  thereof) or any successor provision thereto) from the Company,
                  exceed an amount (the A299% Amount) equal to 299% of the
                  Employee's base amount (as that term is defined in Section
                  280G of the Code or any successor provision thereto) and if
                  the amount otherwise payable hereunder would exceed the 299%
                  Amount, the Severance Payment shall be reduced to the extent
                  necessary so that the aggregate present value determined in
                  the previous clause does not exceed the 299% Amount.

                           ii)      The determination of whether any amount
                  otherwise payable under Section 5(a)(i) causes the 299% Amount
                  to be exceeded shall be made, if requested by the Employee or
                  the Company, by tax counsel selected by the Company and
                  reasonably acceptable to the Employee. The costs of obtaining
                  such determination shall be borne by the Company. The fact
                  that the Employee shall have his right to the Severance
                  Payment reduced as a result of the existence of the
                  limitations contained in this Section 5(a) shall not limit or
                  otherwise affect any rights of the Employee to any Employee
                  Benefit, or other right arising other than pursuant to this
                  Agreement. Without limiting the generality of the foregoing,
                  upon the Employee's termination of employment as provided in
                  this Section 5, the Company shall pay over to him all vested
                  benefits to which he is entitled under and in accordance with
                  the terms of the Company's employee savings, stock ownership,
                  supplemental executive retirement and similar Plans in the
                  event such payments are not otherwise made in accordance with
                  the terms of such plans.

                           iii)     Except to the extent that the payments or
                  benefits pursuant to this Section 5(a)(iii) would result in a
                  reduction of the amount of the Severance Payment because they
                  would exceed the 299% Amount, (A) for the remainder of the
                  Period of Employment the Company shall arrange to provide the
                  Employee with Employee Benefits substantially similar to those
                  which the Employee was receiving or entitled to receive
                  immediately prior to the Termination Date (and if and to the
                  extent that such benefits shall not or cannot be paid or
                  provided under

<PAGE>

                  any policy, plan, program or arrangement of the Company solely
                  due to the fact that the Employee is no longer an officer or
                  employee of the Company, then the Company shall itself pay or
                  provide for the payment to the Employee, his dependents and
                  beneficiaries, such Employee Benefits) and (B) without
                  limiting the generality of the foregoing, the remainder of the
                  Period of Employment shall be considered service with the
                  Company for the purpose of service credits under the Company's
                  retirement income, supplemental executive retirement and other
                  benefit plans of the Company applicable to the Employee or his
                  beneficiaries immediately prior to the Termination Date.
                  Without otherwise limiting the purposes or effect of Section 6
                  hereof, Employee Benefits payable to the Employee pursuant to
                  this Section 5(a)(iii) by reason of any welfare benefit plan
                  of the Company (as the term welfare benefit plan is defined in
                  Section 3(1) of the Employee Retirement Income Security Act of
                  1974, as amended) shall be reduced to the extent comparable
                  welfare benefits are actually received by the Employee from
                  another employer during such period following the Employee's
                  Termination Date until the expiration of the Period of
                  Employment.

                           iv)      Notwithstanding any provision of the Section
                  5(a) to the contrary, in the event the benefits intended to be
                  provided to the Employee pursuant to Section 5(a)(iii) hereof
                  are required to be reduced in whole or in part because the
                  value of such Employee Benefits, when added to the amount of
                  the Severance Payment under Section 5(a)(i), would exceed 299%
                  Amount, the Employee shall have the option to elect to
                  receive, in lieu of all or a portion of the Severance Payment
                  provided in Section 5(a)(i) hereof, one or more Employee
                  Benefits, provided that (A) prior to the receipt of any
                  payment under Section 5(a)(i) hereof, the Employee notifies
                  the Company of the Employee Benefit or Employee Benefits so
                  elected to be received, and (B) in no event shall the
                  aggregate present value of the payments in the nature of
                  compensation (as that phrase is used in Section 280G of the
                  Code) received by the Employee as a result of the receipt of
                  such Employee Benefits, when added to the remaining portion of
                  the Severance Payment, if any, to be received by the Employee,
                  exceed the 299% Amount.

                           v)       In addition to all other compensation due to
                  the Employee, the following shall occur immediately following
                  the occurrence of a Change in Control:

                                    A)      all Company stock options held by
                           the Employee prior to a Change in Control shall
                           become fully exercisable, regardless of whether or
                           not the vesting conditions set forth in the relevant
                           stock option agreements have been satisfied in full;
                           and

                                    B)      all restrictions on any restricted
                           Company stock granted to the Employee prior to a
                           Change in Control shall be removed and the stock
                           shall be freely transferable, regardless of whether
                           the conditions set forth in the relevant restricted
                           stock agreements have been satisfied in full.

         b)       Upon written notice given by the Employee to the Company prior
to the receipt of any payment pursuant to Section 5(a) hereof, the Employee, at
his sole option, without reduction

<PAGE>

to reflect the present value of such amounts as aforesaid, may elect to have all
or any of the Severance Payment payable pursuant to Section 5(a)(i) hereof paid
to him on a quarterly or monthly basis during the remainder of the Period of
Employment.

         c)       There shall be no right of set-off or counterclaim in respect
of any claim, debt or obligation against any payment to or benefit for the
Employee provided for in this Agreement.

         d)       Without limiting the rights of the Employee at law or in
equity, if the Company fails to make any payment required to be made hereunder
on a timely basis, the Company shall pay interest on the amount thereof at an
annualized rate of interest equal to the then-applicable Discount Rate or, if
lesser, the highest rate allowed by applicable usury laws.

         6.       NO MITIGATION OBLIGATION. The Company hereby acknowledges that
it will be difficult, and may be impossible, for the Employee to find reasonably
comparable employment following the Termination Date. Accordingly, the parties
hereto expressly agree that the payment of the severance compensation by the
Company to the Employee in accordance with the terms of this Agreement will be
liquidated damages, and that the Employee shall not be required to mitigate the
amount of any payment provided for in this Agreement by seeking other employment
or otherwise, nor shall any profits, income, earnings or other benefits from any
source whatsoever create any mitigation, offset, reduction or any other
obligation on the part of the Employee hereunder or otherwise, except as
expressly provided in Section 5(a)(iii) hereof.

         7.       COMPETITIVE ACTIVITY. During a period ending six months
following the Termination Date, if the Executive shall have received or shall be
receiving benefits under Section 5(a) hereof, the Executive shall not, without
the prior written consent by the Company, directly or indirectly engage in the
business of commercial banking in competition with the business of the Company
within Harris County, Fort Bend County and Montgomery County, Texas and any
other geographical area served by the Company during the twelve (12) month
period immediately preceding termination of employment nor will the Executive
engage, within this geographical area, in the design, development, distribution,
or sale of a product or service in competition with any product or service being
marketed or planned by the Company at such time, the plans, designs or
specifications of which have been revealed to the Executive. The Executive
acknowledges that these limited prohibitions are reasonable as to time,
geographical area and scope of activities to be restrained and that the limited
prohibitions do not impose a greater restraint than is necessary to protect the
Company's goodwill, proprietary information and other business interests.
Competitive Activity shall mean the prohibitions set forth above in this Section
7, but shall not include (i) the mere ownership of securities in any such
enterprise and exercise of rights appurtenant thereto or (ii) participation in
management of any such enterprise or business operation thereof other than in
connection with the competitive operation of such enterprise.

         8.       LEGAL FEES AND EXPENSES. In the event of a breach of this
Agreement by the Company, it is the intent of the Company that the Employee not
be required to incur the expenses associated with the enforcement of his rights
under this Agreement by litigation or other legal action because the cost and
expense thereof would substantially detract from the benefits intended to be
extended to the Employee hereunder. Accordingly, if the Company fails to comply
with any of its obligations under this Agreement or in the event that the
Company or any other person takes any action to declare this Agreement void or
unenforceable, or institutes

<PAGE>

any litigation designed to deny, or to recover from, the Employee the benefits
intended to be provided to the Employee hereunder, the Company irrevocably
authorizes the Employee from time to time to retain counsel of his choice, at
the expense of the Company as hereafter provided, to represent the Employee in
connection with the initiation or defense of any litigation or other legal
action, whether by or against the Company or any Director, officer, shareholder
or other person affiliated with the Company, in any jurisdiction.
Notwithstanding any existing or prior attorney-client relationship between the
Company and such counsel, the Company irrevocably consents to the Employee's
entering into an attorney-client relationship with such counsel (other than
Vinson & Elkins L.L.P.), and in that connection the Company and the Employee
agree that a confidential relationship shall exist between the Employee and such
counsel. The Company shall pay or cause to be paid and shall be solely
responsible for any and all attorneys and related fees and expenses incurred by
the Employee as a result of the Company's failure to perform this Agreement or
any provision thereof or as a result of the Company or any person contesting the
validity or enforceability of this Agreement or any provision thereof as
aforesaid. If the Company should prevail in any litigation regarding this
Agreement, however, the Company shall not be responsible for any attorneys and
related fees and expenses incurred by Employee in connection with such
litigation.

         9.       EMPLOYMENT RIGHTS. Nothing expressed or implied in this
Agreement shall create any right or duty on the part of the Company or the
Employee to have the Employee remain in the employment of the Company prior to
any Change in Control; provided, however, that any termination of employment of
the Employee or removal of the Employee as an Officer of the Company following
the commencement of any discussion with a third person that ultimately results
in a Change in Control shall be deemed to be a termination or removal of the
Employee after a Change in Control for purposes of this Agreement.

         10.      WITHHOLDING OF TAXES. The Company may withhold from any
amounts payable under this Agreement all federal, state, city or other taxes as
shall be required pursuant to any law or government regulation or ruling.

         11.      SUCCESSORS AND BINDING AGREEMENT.

                  a)       The Company shall require any successor (whether
         direct or indirect, by purchase, merger, consolidation, reorganization
         or otherwise) to all or substantially all of the business and/or assets
         of the Company to execute an agreement pursuant to which the successor
         expressly assumes all of the liabilities and obligations of the Company
         hereunder and agrees to perform this Agreement in the same manner and
         to the same extent the Company would be required to perform if no such
         succession had taken place. This Agreement shall be binding upon and
         inure to the benefit of the Company and any successor to the Company,
         including without limitation any persons acquiring directly or
         indirectly all or substantially all of the business and/or assets of
         the Company whether by purchase, merger, consolidation, reorganization
         or otherwise (and such successor shall thereafter be deemed the Company
         for the purposes of this Agreement), but shall not otherwise be
         assignable, transferable or delegable by the Company.

<PAGE>

                  b)       This Agreement shall inure to the benefit of and be
         enforceable by the Employee's personal or legal representatives,
         executors, administrators, successors, heirs, distributees and/or
         legatees.

                  c)       This Agreement is personal in nature and neither of
         the parties hereto shall, without the consent of the other, assign,
         transfer or delegate this Agreement or any rights or obligations
         hereunder except as expressly provided in Section 11(a) hereof. Without
         limiting the generality of the foregoing, the Employee's right to
         receive payments hereunder shall not be assignable, transferable or
         delegable, whether by pledge, creation of a security interest or
         otherwise, other than by a transfer by the Employee's will or by the
         laws of descent and distribution and, in the event of any attempted
         assignment or transfer contrary to this Section 11(c), the Company
         shall have no liability to pay any amount so attempted to be assigned,
         transferred or delegated.

                  d)       The Company and the Employee recognize that each
         Party will have no adequate remedy at law for breach by the other of
         any of the agreements contained herein and, in the event of any such
         breach, the Company and the Employee hereby agree and consent that the
         other shall be entitled to a decree of specific performance, mandamus
         or other appropriate remedy to enforce performance of this Agreement.

         12.      NOTICE. For all purposes of this Agreement, all communications
provided for herein shall be in writing and shall be deemed to have been duly
given when delivered or three business days after having been mailed by United
States registered or certified mail, return receipt requested, postage prepaid,
addressed to the Company (to the attention of the Secretary of the Company) at
its principal executive office and to the Employee at his principal residence,
or to such other address as any party may have furnished to the other in writing
and in accordance herewith, except that notices of change of address shall be
effective only upon receipt.

         13.      GOVERNING LAW. The validity, interpretation, construction and
performance of this Agreement shall be governed by the laws of the State of
Texas, without giving effect to the principles of conflict of laws of such
State.

         14.      VALIDITY. If any provision of this Agreement or the
application of any provision hereof to any person or circumstances is held
invalid, unenforceable or otherwise illegal, the remainder of this Agreement and
the application of such provision to any other person or circumstances shall not
be affected, and the provision so held to be invalid, unenforceable or otherwise
illegal shall be reformed to the extent (and only to the extent) necessary to
make it enforceable, valid and legal.

         15.      MISCELLANEOUS. No provisions of this Agreement may be
modified, waived or discharged unless such waiver, modification or discharge is
agreed to in writing signed by the Employee and the Company. No waiver by either
party hereto at any time of any breach by the other party hereto or compliance
with any condition or provision of this Agreement to be performed by such other
party shall be deemed a waiver of similar or dissimilar provisions or conditions
at the same or at any prior or subsequent time. No agreements or
representations, oral or otherwise, expressed or implied with respect to the
subject matter hereof have been made by either party which are not set forth
expressly in this Agreement.

<PAGE>

         16.      PRIOR AGREEMENTS. This Agreement is voluntarily entered into
and supersedes and takes the place of any prior change in control, severance or
employment agreements between the parties hereto. The parties hereto expressly
agree and hereby declare that any and all prior change in control, severance or
employment agreements between the parties are terminated and of no force or
effect.

         17.      COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original but all of which
together will constitute one and the same agreement.

<PAGE>

         IN WITNESS WHEREOF, the parties have caused this Agreement to be duly
executed and delivered as of the date first above written.

                                        SOUTHWEST BANCORPORATION OF TEXAS, INC.

                                        By: /s/ Paul B. Murphy
                                        ------------------------------------
                                                Paul B. Murphy, Jr.

                                        EXECUTIVE:

                                        /s/ Lane Ward
                                        ------------------------------------

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