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401(k) Retirement Plan - Tom Brown Inc.

                     TOM BROWN, INC. 401(k) RETIREMENT PLAN

The TOM BROWN, INC. 401(k) Retirement Plan ("this Plan") is adopted as of
January 1, 2000, by TOM BROWN, INC., a corporation.

TOM BROWN, INC. provides its employees a means to accumulate voluntary savings
for their retirement years; and

This Plan is adopted to provide:

1.      Name of Plan; Effective Date.

This Plan is known as the TOM BROWN, INC. 401(k) Retirement Plan. This Plan is
effective as of January 1, 2000 and is a restatement of the TOM BROWN, INC. KSOP
effective January 1, 1996.

2.      Definitions.

In this Plan:

        2.1 "Anniversary Date" is the last day of a Plan Year.

        2.2 "Code" is the Internal Revenue Code of 1986, as amended, and its
        Regulations. 

        2.3 "Committee" is the Committee in Section 14.
          
        2.4 "Company" is TOM BROWN, INC.. Any corporation a member of a
        controlled group of corporations with TOM BROWN, INC. or an affiliate
        may also sponsor this Plan if such corporation is designated by TOM
        BROWN, INC. as a sponsoring employer and such corporation agrees to this
        Plan.

        2.5 "Compensation" is all of each Participant's W-2 earnings, but
        excluding taxable fringe benefits (such as car allowances and moving
        expenses). Compensation includes only that Compensation actually paid to
        the Participant during the Plan Year.

        Notwithstanding the above, Compensation includes any amount contributed
        by TOM BROWN, INC. to a salary reduction agreement not includible in the
        gross income of the Employee by Code Section 125, Code Section 401(k),
        Code Section 402(e)(3), Code Section 402(h) or Code Section 403(b).

        The annual Compensation of each Participant does not exceed $150,000, as
        adjusted for increases in the cost of living in Code Section
        401(a)(17)(B). The cost-of-living adjustment in effect for a calendar
        year applies to any period, not exceeding 12 months, for which
        compensation is determined (determination period) beginning in such
        calendar year. If a determination period is less than 12 months, 


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TOM BROWN, INC. 401(k) Retirement Plan                              Page 1 of 41
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        the annual compensation limit is multiplied by a fraction, the numerator
        of which is the number of months in the determination period, and the
        denominator of which is 12.

        2.6 "Computation Period" is the 12-consecutive month period beginning
        with the Employee's Employment Beginning Date (or, if applicable, his
        Re-Employment Beginning Date) and the succeeding 12-consecutive month
        periods beginning on the anniversaries of that beginning date.

        2.7 "Disability" is a Participant's physical or mental condition from
        bodily injury, disease or mental disorder that renders him incapable of
        continuing any gainful occupation and constitutes total disability by a
        medically determinable physical or mental impairment expected to result
        in death or to be of long, continued and indefinite duration. A licensed
        physician chosen by the Committee determines a Participant's disability.

        2.8 "Employee" is any person employed by TOM BROWN, INC. or a sponsoring
        employer. Employee also includes any Leased Employee deemed to be an
        Employee by Code Section 414(n) or Code Section 414(o) but only to the
        extent necessary to meet the requirements of Code Section 414(n)(3).
        "Employee" excludes:

               A.     Individuals hired on a temporary basis and not expected to
               complete at least 1,000 Hours of Service during the applicable
               Computation Period;

               B.     Individuals whose employment is governed by a collective
               bargaining agreement between TOM BROWN, INC. and employee
               representatives by which retirement benefits were the subject of
               good faith bargaining; and

               C.     Non-resident aliens who receive no earned income (in Code
               Section 911(d)(2)) from TOM BROWN, INC. constituting income from
               sources within the United States (in Code Section 861(a)(3)).

        2.9 "Employment Beginning Date" is the date the Employee first performs
        an Hour of Service for TOM BROWN, INC.. "Re-Employment Beginning Date"
        is the date an Employee who was previously employed by the Employer but
        whose employment terminated from a One-Year Break in Service first
        completes an Hour of Service for TOM BROWN, INC. after the last
        applicable Computation Period he incurred a One-Year Break in Service.

        2.10 "Fund" or "Funds" is the investment fund or funds established and
        maintained by the Trustee for this Plan by subsection 8.1.

        2.11 "Highly Compensated Employee" is any Employee who (A) was a 5%
        owner (in Code Section 416(I)(1)) of TOM BROWN, INC. at any time during
        the current or the preceding Plan Year, or (B) for the preceding Plan
        Year,


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TOM BROWN, INC. 401(k) Retirement Plan                              Page 2 of 41
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               A.     had Compensation in excess of $80,000 (as adjusted by the
               Secretary by Code Section 415(d), with a base period of the
               calendar quarter ending September 30, 1996), and

               B.     if TOM BROWN, INC. elects, was in the top-paid group of
               Employees for such preceding year. An Employee is in the top-paid
               group of Employees for any year if such Employee is in the group
               of the top 20% of the Employees when ranked on the basis of
               Compensation paid during such year.

               A former employee is treated as a highly compensated employee if:
               (A) such Employee was a highly compensated employee when such
               Employee separated from Service, or (B) such Employee was a
               highly compensated employee at any time after age 55.

               The determination of who is a highly compensated employee,
               including the determinations of the number and identity of
               Employees in the top-paid group, is made by Code Section 414(q).

               For this subsection, the term "Compensation" means compensation
               in Code Section 415(c)(3).

        2.12 "Hour of Service" is each hour an Employee is directly or
        indirectly paid, or entitled to payment, by TOM BROWN, INC. for the
        performance of duties (credited for the computation period in which the
        duties were performed), each hour for which back pay, irrespective of
        mitigation of damages, is either awarded or agreed to by TOM BROWN, INC.
        (credited for the computation period to which the award or agreement
        pertains), and each hour for which an Employee is directly or indirectly
        paid, or entitled to payment, by TOM BROWN, INC. for reasons (such as
        vacation, sickness, disability, holidays, paid layoff and similar paid
        periods of nonworking time) other than the performance of duties
        (credited for the computation period in which such period of nonworking
        time first occurs). For an Employee who is absent from work for any
        period for -

               A. the pregnancy of the Employee;

               B. the birth of a child of the Employee;

               C. for the placement of a child with the Employee for the
               adoption of such child by such Employee, or

               D. for the caring for such child for a period beginning
               immediately following such birth or placement,

               solely to determine whether a One-Year Break in Service occurs,
               such Employee is credited with the Hours of Service which
               otherwise is credited to such Employee but for such absence.

               If the Plan Administrator is unable to determine the Hours of
               Service for such 


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TOM BROWN, INC. 401(k) Retirement Plan                              Page 3 of 41
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               an absence, the Employee is credited with 8 Hours of Service for
               each normal workday of such absence.

               No credit for Hours of Service are granted for an absence
               described in this subsection if the Employee does not timely
               provide information required by the Plan Administrator to
               reasonably establish whether the Employee was absent from work
               for a reason in this subsection and to establish the number of
               days for which there was such an absence.

               Hours of Service credited by this subsection are credited only in
               the Plan Year in which the absence from work begins (if the
               Employee is prevented from incurring a One-Year Break in Service
               in such year solely because the Employee is credited with Hours
               of Service by this subsection), or in any other case, in the
               immediately following Plan Year.

               No more than 501 Hours of Service are credited to an Employee for
               any single continuous period the Employee performs no duties. In
               addition, the rules in Labor Reg ss. 2530.200b-2(b) and Labor Reg
               ss. 2530.200b-2(c) apply to determine Hours of Service.

               An Hour of Service for any member of a controlled group of
               corporations or any member of an affiliated service group (Code
               Section 414(b), Code Section 414(m) or Code Section 414(o)) of
               which TOM BROWN, INC. is a member, or for an unincorporated trade
               or business in common control with TOM BROWN, INC. (in Code
               Section 414(c)) or any other entity required to be aggregated
               with TOM BROWN, INC. by Code Section 414(o) are credited as an
               Hour of Service with TOM BROWN, INC..

        2.13 "Income" is the income allocable to "excess contributions" or
        "excess aggregate contributions" in subsection 7.2 below, for the Plan
        Year in which such excess contribution is made. The amount of income
        attributable to such excess contributions is determined by the Committee
        in a reasonable and consistent manner. Income does not include income
        allocable to excess contributions for the Plan Year the excess
        contribution is returned to the Participant.

        2.14 "Non-Highly Compensated Employee" is an Employee who is not a
        Highly Compensated Employee.

        2.15 "Normal Retirement Age" is age 65.

        2.16 "One-Year Break in Service" is a Computation Period in which the
        Employee completes 500 or less Hours of Service.

        2.17 "Participating Employee" and "Participant" is any Employee of Tom
        Brown, Inc. eligible to participate in TOM BROWN, INC. contributions.
        "Beneficiary" is a person who becomes eligible to participate and for
        whom an account is maintained by the Trustee, but who ceases to be an
        Employee of TOM BROWN, INC., or a person entitled to benefits in this
        Plan as beneficiary of a deceased Participating 


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TOM BROWN, INC. 401(k) Retirement Plan                              Page 4 of 41
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        Employee or as beneficiary of a deceased Beneficiary.

        2.18 "this Plan" is the TOM BROWN, INC. 401(k) Retirement Plan, as
        amended.

        2.19 "Plan Year" is the calendar year.

        2.20 "Pooled Investment Account" is an account established by an
        administrative services agreement between TOM BROWN, INC. and Trustee.

        2.21 "Qualified Non-Elective Contribution" is TOM BROWN, INC.'S
        contributions made by subsection 7.2. Such contributions are a Salary
        Reduction Contribution and are used to satisfy the "Actual Deferral
        Percentage" tests. In addition, TOM BROWN, INC.'S contributions made for
        subsection 7.2 used to satisfy the "Actual Contribution Percentage"
        tests are Qualified Non-Elective Contributions and subject to subsection
        5.1A. and Section 6.

        2.22 "Service" is employment with TOM BROWN, INC. including leaves of
        absence authorized by TOM BROWN, INC. (such as a temporary absence
        authorized by TOM BROWN, INC. for vacation, sickness, injury,
        disability, layoff, or jury duty) and service in the armed forces of the
        United States, beginning while he is an Employee, if he returns to the
        employment of TOM BROWN, INC. at the end of such authorized absence, or
        within the applicable period specified in the Military Selective Service
        Act of 1967, and its amendments, after release from such service with
        the armed forces.

        In calculating the number of a Participant's Vesting Years of Service
        and length of participation in this Plan, such period of absence or
        service with the armed forces subsequent to becoming a Participant, are
        counted. However, no Contributions are made during such periods of
        absence or service with the armed forces. TOM BROWN, INC.'S leave of
        absence policy is applied in a uniform and non-discriminatory manner for
        all Participants in similar circumstances.

        Any period of Service as a sole proprietor or partner of a predecessor
        business organization prior to becoming an Employee is taken into
        consideration as Service for this Plan.

        2.23 "Trust" is the TOM BROWN, INC. 401(k) Retirement Plan Trust entered
        into between TOM BROWN, INC. and the Trustee.

        2.24 "Trustee" is the Trustee or Trustees appointed from time to time by
        TOM BROWN, INC. to accept contributions, administer the assets of the
        Trust, and otherwise to act by this Plan and the Trust.

        2.25 "Valuation Date" is any day that the New York Stock Exchange is
        open for business or any other date chosen by the Committee.

        2.26 "Vesting Year of Service" is the completion of at least 1,000 Hours
        of Service 


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TOM BROWN, INC. 401(k) Retirement Plan                              Page 5 of 41
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        during the applicable Computation Period.

        An individual's entire Service is counted in computing his Vesting Years
        of Service even if the individual is not in a class of employees
        qualifying such individual as an "Employee" in subsection 2.9.

        To determine a Participant's vested interest at his resumption of
        Service after a One-Year Break in Service, a Vesting Year of Service is
        determined the same as a Vesting Year of Service for Participants with
        no prior Service, except the applicable Computation Period for measuring
        his Vesting Years of Service following such break begins on the
        Participant's Re-Employment Beginning Date instead of on his Employment
        Beginning Date.

        2.27 Number; Gender. Where necessary or appropriate, the singular
        includes the plural, the plural includes the singular, the masculine
        includes the feminine and neuter, the feminine includes the masculine
        and neuter, and the neuter includes the masculine and feminine.

3.      Purpose.

This Plan is created to enable eligible TOM BROWN, INC. Employees to defer a
portion of their compensation until retirement and to potentially share in any
TOM BROWN, INC. discretionary contributions. Except by Section 26. below, no
part of the principal or income of this Plan is paid to or reinvested in TOM
BROWN, INC., or used for any purpose other than the exclusive benefit of such
Employees and their Beneficiaries.

All discretionary acts taken by TOM BROWN, INC., Plan Administrator or Committee
are uniform in their nature and application to all persons similarly situated,
and no discretionary acts are taken which are discriminatory by the Code or the
Employee Retirement Income Security Act of 1974, for employees' profit-sharing
trusts, as amended.

4.      Plan Entry Requirements.

Each Employee of TOM BROWN, INC. shall enter the Plan and become a Participant
immediately upon employment. An Employee who meets the entry requirements may
elect not to participate in this Plan by giving TOM BROWN, INC. written notice
of his or her election not to be included as a Participant. Such election
remains in effect until the Employee gives TOM BROWN, INC. written notice of his
or her election to become a Participant.

An Employee who meet the eligibility requirements but who has incurs a One-Year
Break in Service is eligible to re-enter this Plan on the first day of the
calendar month after his return. If an Employee who is not a member of an
eligible class of employees becomes a member of an eligible class, such employee
participates immediately if such Employee satisfies the minimum age requirement
and would have otherwise previously become a Participant.

If a temporary employee who was not expected to complete 1,000 Hours of Service
in a 


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TOM BROWN, INC. 401(k) Retirement Plan                              Page 6 of 41
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Computation Period actually completes 1,000 Hours of Service during an
applicable Computation Period, he is deemed an Employee in an eligible class as
of the first day of the applicable Computation Period in which he first
completes 1,000 Hours of Service (or, if later, his attainment of age 18). If
the eligibility of any person to participate in the Plan is disputed, the
decision of the Committee for such eligibility is controlling. To enable the
Committee to make such determination, all information available to TOM BROWN,
INC. required by the Committee shall be made available to the Committee.

5.      Contributions.

Subject to subsections 5.3 and 5.4 below, contributions to this Plan are made as
follows:

        5.1 Salary Reduction Contributions. Each Participant may elect to enter
        into a salary reduction agreement with TOM BROWN, INC. to accept a
        reduction in salary from TOM BROWN, INC. (such reduction not to be less
        than 2% nor greater than 15% of the Participant's Compensation for any
        Plan Year).

        For such agreement, TOM BROWN, INC. makes a salary reduction
        contribution to the Participant's Salary Reduction Contribution Account
        for the Participant for such Plan Year in an amount equal to the total
        amount by which the Participant's Compensation from TOM BROWN, INC. is
        reduced during the Plan Year by the salary reduction agreement. TOM
        BROWN, INC. Contributions for a given Plan Year for salary reduction
        agreements are deposited with the Trustee within a reasonable amount of
        time, not more than 90 days after the date such funds are withheld from
        the Participant's salary.

        Salary reduction contributions are governed by the following:

               A.     Amounts credited to a Participant's Salary Reduction
               Account are 100% vested and nonforfeitable at all times.

               B.     Amounts credited to a Participant's Salary Reduction
               Account are considered a contribution made by TOM BROWN, INC. for
               subsections 8.8, 8.9 and 19.2.

               C.     A salary reduction agreement may provide for a reduction
               in salary by means of reducing the Participant's payroll on a
               periodic basis or the agreement may provide for lump sum
               reductions for any compensation payments in such amounts that do
               not cause the limitations of Section 7. and subsections 8.8, or
               8.9 to be exceeded.

               D.     A salary reduction agreement for reductions to a
               Participant's periodic payroll may be cancelled at any time by a
               Participant by giving TOM BROWN, INC. a written notice,
               specifying the effective date of the cancellation. A Participant
               may change the rate of his salary reduction at such times, and
               with such frequency, as determined by the Committee.



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TOM BROWN, INC. 401(k) Retirement Plan                              Page 7 of 41
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               E.     TOM BROWN, INC. may refrain from making contributions to
               this Plan, for the salary reduction agreement entered into by the
               Participant, if TOM BROWN, INC. determines that such action is
               necessary to insure that the Participant's annual additions for
               any Plan Year do not exceed the limitations of subsections 8.8 or
               8.9, or to insure that the Actual Deferral Percentage Test in
               Section 7. is met for such Plan Year. TOM BROWN, INC. may pay to
               the Participant the amount that otherwise would have been paid
               prior to the Participant's election to reduce his salary, rather
               than as a contribution made for a salary reduction agreement.

               F.     The maximum salary reduction is $7,000 (or such higher
               amount in Code Section 402(g)) by all plans maintained by TOM
               BROWN, INC. for any Employee's taxable year.

        5.2 Matching Company Contributions. During the Plan Year, TOM BROWN,
        INC. contributes on behalf of each Participant who enters into a salary
        reduction agreement, any discretionary "periodic" TOM BROWN, INC.
        Matching Contribution is announced by the TOM BROWN, INC. Board.

        The periodic TOM BROWN, INC. Matching Contribution, if any, is
        determined by TOM BROWN, INC. and announced to all Participants. The
        resolution sets forth the amount of the periodic TOM BROWN, INC.
        Matching Contribution expressed as a percentage of the amount of each
        Participant's Salary Reduction Contribution. Further, the resolution may
        limit the amount of a Participant's Salary Reduction Contribution
        eligible for a periodic TOM BROWN, INC. Matching Contribution, by
        limiting the Salary Reduction Contribution expressed as a fixed dollar
        amount or as a percentage of the Participant's Compensation. The
        periodic TOM BROWN, INC. Matching Contribution is deposited for each
        deposit of Salary Reduction Contributions at the end of each quarter.

        In addition, TOM BROWN, INC. may contribute to the Plan on behalf of
        each Participant who is eligible to share in "year-end" TOM BROWN, INC.
        Matching Contributions, a discretionary year-end TOM BROWN, INC.
        Matching Contribution. The TOM BROWN, INC. Matching Contribution is
        expressed as a fixed dollar amount or as a percentage of the amount of
        each Participant's Salary Reduction Contribution. Further, the
        resolution may limit the amount of a Participant's Salary Reduction
        Contribution eligible for the year-end TOM BROWN, INC. Matching
        Contribution, by limiting the Salary Reduction Contribution expressed as
        a fixed dollar amount or as a percentage of the Participant's
        Compensation.

        5.3 Discretionary TOM BROWN, INC. Contributions. By the time for filing
        its federal income tax return (including extensions thereof) for its
        current taxable year and for each succeeding taxable year, TOM BROWN,
        INC. may contribute to this Plan, as its contribution for the Plan Year
        ending within or co-terminous with such taxable year of TOM BROWN, INC.,
        to be held in trust, administered and distributed by the terms of this
        Plan, an amount or amounts TOM BROWN, INC., in its sole discretion
        determines. TOM BROWN, INC. may contribute such amount or amounts at any
        time; 


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TOM BROWN, INC. 401(k) Retirement Plan                              Page 8 of 41
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        and it may make such contribution in 2 or more installments.

        TOM BROWN, INC. determines and communicates to the Trustee for each Plan
        Year either (i) the amount in dollars to be contributed for such year,
        or (ii) a formula by which such amount may be determined. These
        contributions are totally in TOM BROWN, INC.'s discretion as to amount,
        timing and form, and they need not be limited to TOM BROWN, INC.'s
        profits. Nothing in this Plan entitles any Trustee, Participating
        Employee or Beneficiary to inquire into or demand the right to inspect
        TOM BROWN, INC.'s books or records.

        5.4 Rollover Contributions. An Employee, whether or not he would
        otherwise be a Participant in the Plan, may contribute a "Rollover
        Contribution" to this Plan by delivery of such contribution to the
        Trustee if such Employee submits a written certification that such
        contribution qualifies as a Rollover Contribution.

        For this subsection 5.3 or 5.4, for an amount to qualify for
        contribution by an Employee as a Rollover Contribution, it must:

               A.     represent a distribution to such Employee from a plan
               qualified by Code Section 401, and not paid to him:

                      (1)    as a required minimum distribution by Code Section 
                      401(a)(9), or

                      (2)    as one of a series of substantially equal periodic
                      payments made on the life expectancy of the Employee (or
                      joint life expectancy of the Employee and a designated
                      beneficiary) or over a specified period of 10 years or
                      more; or

               B.     represent the balance to his credit of a conduit
               Individual Retirement Account or similar account or annuity,
               unless such balance is derived in any part from a previous
               rollover of a partial qualified plan contribution; and (in either
               the case of compliance with subparagraph A. above or this
               subparagraph B.); and

               C.     be contributed to this Plan within 60 days following
               distribution of such amount to the Employee.
               An amount does not qualify as a Rollover Contribution if it
               includes any amount which the Employee contributed to a Code
               Section 401 plan.

               A Rollover Contribution is considered as a part of the account of
               the contributing Employee in this Plan, is fully vested and
               nonforfeitable, and is accounted for separately from TOM BROWN,
               INC. contributions.

               A Participant may also arrange for the direct transfer of his
               benefit from a Code Section 401 plan to this Plan. For accounting
               and record keeping, transfer contributions are identical to
               Rollover Contributions.


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TOM BROWN, INC. 401(k) Retirement Plan                              Page 9 of 41
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               Contributions, benefits and service credit for qualified military
               service are provided by Code Section 414(u).

60      Withdrawals.

        6.1 Age 59-1/2. A Participant age 59-1/2 may withdraw all or any portion
        of his Salary Reduction Contribution Account and/or his Rollover Account
        by notifying the Committee of his election to make such a withdrawal.
        Further, a Participant age 59-1/2 and satisfying the requirements for
        full 100% vesting may withdraw all or any portion of his

        Matching TOM BROWN, INC. Contribution Account and/or his] TOM BROWN,
        INC. Discretionary Contribution Account by notifying the Committee of
        his election to make such a withdrawal. Distribution may be made to the
        electing Participant, but only if the spousal consent in subsection 10.6
        is satisfied.

        6.2 Hardship. If a Participant not more than age 59-1/2 has a serious
        financial hardship, such Participant may withdraw a portion of his
        Salary Reduction Contribution Account and/or Rollover Account. Hardship
        distributions are made from the Salary Reduction Contribution Account,
        if available, and then from the Rollover Account. Whether a serious
        financial hardship exists is based on all relevant facts and
        circumstances. A need is not disqualified because it was reasonably
        foreseeable or voluntarily incurred. Withdrawal by this subsection 6.2
        is authorized only if the distribution is for:

               A.     Medical expenses in Code Section 213(d) incurred by the
               Participant, his spouse, or any of his dependents (in Code
               Section 152);

               B.     The purchase (excluding mortgage payments) of a principal
               residence for the Participant;

               C.     Payment of tuition and related educational fees for the
               next 12 months of post-secondary education for the Participant,
               his spouse, children, or dependents; or

               D.     The need to prevent the eviction of the Participant from
               his principal residence or foreclosure on the mortgage of the
               Participant's principal residence.

        6.3 Conditions for Hardship Distribution. No distribution is made by
        subsection 6.2 unless the Committee, based upon the Participant's
        representation and other facts known to the Committee, determines that
        the following conditions are satisfied:

               A. The distribution is not in excess of the amount of the
               immediate and heavy financial need of the Participant; and

               B. The Participant has obtained all distributions, other than
               hardship 


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 10 of 41
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               distributions, and all nontaxable loans currently available by
               TOM BROWN, INC. maintained plans.

        6.4 Available Other Resources. No distribution is made by subsection 6.2
        unless the Committee determines, based upon all relevant facts and
        circumstances, that the amount to be distributed is not in excess of the
        amount required to relieve the financial need and that such need cannot
        be satisfied from other resources reasonably available to the
        Participant. The Participant's resources are deemed to include those
        assets of his spouse and minor children that are reasonably available to
        the Participant. A distribution may be treated as necessary to satisfy a
        financial need if the Committee relies on the Participant's
        representation that the need cannot be relieved:

               A.     Through reimbursement or compensation by insurance or
               otherwise;

               B.     By reasonable liquidation of the Participant's assets, to
               the extent such liquidation would not itself cause an immediate
               and heavy financial need;

               C.     By stopping of Salary Reduction Contributions and 
               voluntary Employee contributions, if available, to this Plan; or

               D.     By other distributions or loans from this Plan, if
               available, or any other qualified retirement plan, or by
               borrowing from commercial sources on reasonable commercial terms.

               Any Participant who elects a hardship distribution by subsection
               6.2 may not enter into a salary reduction agreement for any
               Compensation received during the one-year period beginning with
               the date of such hardship distribution.

70      Special Nondiscrimination Testing.

        7.1 Actual Deferral Percentage Tests. For each Plan Year the Plan shall
        satisfy one of the following tests:

               A.     The "Actual Deferral Percentage" for the Highly
               Compensated Employee group is not more than the "Actual Deferral
               Percentage" of the Non-Highly Compensated Employee group
               multiplied by 1.25, or

               B.     The excess of the "Actual Deferral Percentage" for the
               Highly Compensated Employee group over the "Actual Deferral
               Percentage" for the Non-Highly Compensated Employee group is not
               more than two percentage points. Additionally, the "Actual
               Deferral Percentage" for the Highly Compensated Employee group
               does not exceed the "Actual Deferral Percentage" for the
               Non-Highly Compensated Employee group multiplied by 2. Code
               Section 401(k)(3) and Reg ss. 1.401(k)-1(b) are incorporated
               herein by reference.


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 11 of 41
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               "Actual Deferral Percentage" means, for the Highly Compensated
               Employee group and Non-Highly Compensated Employee group for a
               Plan Year, the average of the ratios, calculated separately for
               each Participant in such group, of the amount of Salary Reduction
               Contributions allocated to each Participant's Salary Reduction
               Contribution Account for such Plan Year to such Participant's
               Compensation for such Plan Year.

               In performing the nondiscrimination testing, the Actual Deferral
               Percentage for the Highly Compensated Employee group is
               determined for the current Plan Year, and the Actual Deferral
               Percentage for the Non-Highly Compensated Employee group is
               determined for the current Plan Year. For the first Plan Year (if
               this Plan is not a successor plan), the amount taken into account
               as the Actual Deferral Percentage for the Non-Highly Compensated
               Employee group for the current Plan Year is 3% or, at TOM BROWN,
               INC.'S election, the Actual Deferral Percentage for the first
               Plan Year. The actual deferral ratio for each Participant and the
               "Actual Deferral Percentage" for each group are calculated to the
               nearest one-hundredth of one percent.

               A Highly Compensated Employee and a Non-Highly Compensated
               Employee include any Employee eligible to make a Salary Reduction
               Contribution, whether or not such deferral election is made or
               suspended.

               For this subsection and Code Section 401(a)(4), Code Section
               410(b) and Code Section 401(k), if two or more plans which
               include cash or deferred arrangements are considered one plan for
               Code Section 410(a)(4) or Code Section 410(b) (other than Code
               Section 410(b)(2)(A)(ii)), the cash or deferred arrangements
               included in such plans are treated as one arrangement. In
               addition, two or more cash or deferred arrangements may be
               considered as a single arrangement to determine whether or not
               such arrangements are treated as one arrangement and as one plan
               for this subsection and Code Section 401(a)(4), Code Section
               410(b) and Code Section 401(k). Plans may be aggregated by this
               subsection only if they have the same plan year.

               An employee stock ownership plan in Code Section 4975(e)(7) may
               not be combined with this Plan to determine whether the employee
               stock ownership plan or this Plan satisfies this subsection, Code
               Section 401(a)(4), Code Section 410(b) and Code Section 401(k).

               If a Highly Compensated Employee is a Participant in two or more
               cash or deferred arrangements of TOM BROWN, INC., all such cash
               or deferred arrangements are treated as one cash or deferred
               arrangement to determine the actual deferral ratio for such
               Highly Compensated Employee. However, if the cash or deferred
               arrangements have different Plan Years, this paragraph is applied
               by treating all cash or deferred arrangements ending with or
               within the same calendar year as a single arrangement.


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 12 of 41
   13

        7.2 Actual Contribution Percentage Tests. For each Plan Year, this Plan
        shall satisfy one of the following tests:

               A.     The "Actual Contribution Percentage" for the Highly
               Compensated Employee group is not more than the "Actual
               Contribution Percentage" of the Non-Highly Compensated Employee
               group multiplied by 1.25, or

               B.     The excess of the "Actual Contribution Percentage" for the
               Highly Compensated Employee group over the "Actual Contribution
               Percentage" for the Non-Highly Compensated Employee group is not
               more than two percentage points. Additionally, the "Actual
               Contribution Percentage" for the Highly Compensated Employee
               group does not exceed the "Actual Contribution Percentage" for
               the Non-Highly Compensated Employee group multiplied by 2.

               However, to prevent the multiple use of the alternative method
               (2) described in this subsection and Code Section 401(m)(9)(A),
               any Highly Compensated Employee eligible to make Salary Reduction
               Contributions or to receive Matching TOM BROWN, INC.
               Contributions by this Plan has his actual contribution ratio
               reduced by Reg Section 1.401(m)-2. Code Section 401(m) and Reg
               Section 1.401(m)-1(b) and Reg Section 1.401(m)-2 are incorporated
               here by reference.

               "Actual Contribution Percentage" for a Plan Year is, for the
               Highly Compensated Employee group and the Non-Highly Compensated
               Employee group, the same as Actual Deferral Percentage in
               subsection 7.1, but substituting "Matching TOM BROWN, INC.
               Contributions" for "Salary Reduction Contributions."

               In performing the nondiscrimination testing required by this
               subsecton 7.2, the Actual Contribution Percentage for the Highly
               Compensated Employee group is determined for the current Plan
               Year, and the Actual contribution Percentage for the Non-Highly
               Compensated Employee group is determined for the current Plan
               Year. For the first Plan Year (if this Plan is not a successor
               plan), the amount taken into account as the Actual Contribution
               Percentage for the Non-Highly Compensated Employee group for the
               prior Plan Year is 3% or, at the Employer's election, the Actual
               Contribution Percentage for that first Plan Year.

               To determine the "Actual Contribution Percentage" and the amount
               of Excess Aggregate Contributions pursuant to subsection 7.2,
               only TOM BROWN, INC.

               Matching Contributions contributed to this Plan prior to the end
               of the succeeding Plan Year are considered.

               C.     Adjustment to Actual Deferral Percentage Tests. If the
               initial allocations of the Salary Reduction Contributions do not
               satisfy one of the 


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 13 of 41
   14

               tests set forth in subsection 7.1, TOM BROWN, INC. shall correct
               for Excess Contributions (i.e., Salary Reduction Contributions in
               excess of the limits established by the tests set forth in
               subsection 7.1) by either or a combination of the options forth
               below:

                      (3)    On or before the 15th day of the 3rd month after
                      the end of each Plan Year, the Highly Compensated Employee
                      with the highest Salary Reduction Contributions for that
                      Plan Year shall have his portion of Excess Contributions
                      distributed to him until one of the tests set forth in
                      subsection 7.1 is satisfied, or until his Salary Reduction
                      Contributions for that Plan Year equal the Salary
                      Reduction Contributions for that Plan Year of the Highly
                      Compensated Employee having the second highest Salary
                      Reduction Contributions for that Plan Year. This process
                      continues until all Excess Contributions are distributed.

                      For each Highly Compensated Employee, the amount of Excess
                      Contributions is equal to the Salary Reduction
                      Contributions for such Highly Compensated Employee
                      (determined prior to the application of this paragraph)
                      minus the amount determined by multiplying the Highly
                      Compensated Employee's actual deferral ratio (determined
                      after application of this paragraph) by his Compensation.
                      However, to determine the amount of Excess Contributions
                      to be distributed for an affected Highly Compensated
                      Employee, such amount is reduced by any Salary Reduction
                      Contributions previously distributed to such affected
                      Highly Compensated Employee for his taxable year ending
                      with or within such Plan Year.

                      If the distribution of Excess Contributions is made, the
                      test provided in Code Section 401(k)(3) is deemed to be
                      met regardless of whether the test provided in subsection
                      7.1, if recalculated after distribution of the Excess
                      Contributions, satisfies Code Section 401(k)(3). For Code
                      Section 401(m)(9), if a corrective distribution of Excess
                      Contributions is made, or a recharacterization occurs, the
                      Actual Deferral Percentage for Highly Compensated
                      Employees is deemed to be the largest amount permitted by
                      Code Section 401(k)(3).

                      For the distribution of Excess Contributions as described
                      above, such distribution:

                             (a) may be postponed but not later than the close
                             of the succeeding Plan Year;

                             (b) is adjusted for Income; and

                             (c) is designated by TOM BROWN, INC. as a
                             distribution of Excess Contributions (and Income).


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 14 of 41
   15


               D.     Within 12 months after the end of the Plan Year, TOM
               BROWN, INC. shall make a special Qualified Non-Elective
               Contribution for participating Non-Highly Compensated Employees
               sufficient to satisfy one of the tests in subsection 7.1. Such
               contribution shall be allocated to the Participant's Salary
               Reduction Contribution Account of each Non-Highly Compensated
               Employee in the same proportion that each participating
               Non-Highly Compensated Employee's Compensation for the year bears
               to the total Compensation of all participating Non-Highly
               Compensated Employees.

               E.     Safe Harbor Nondiscrimination Rules. Notwithstanding
               subsection 7.1, for Plan Years beginning after 1998, the test in
               Code Section 401(k)(3) is met if this Plan meets both the Notice
               Requirement and the Contribution Requirements. The Notice
               Requirement is met if each Employee eligible to participate in
               this Plan is, within a reasonable period before any Plan Year,
               given written notice of the Employee's rights and obligations by
               this Plan. The notice must be sufficiently accurate and
               comprehensive to apprise the Employee of such rights and
               obligations, and be written in a manner to be understood by the
               average Employee eligible to participate.

               The Contribution Requirements are met if (i) the Matching
               Contribution Requirement is met, or (ii) TOM BROWN, INC. is
               required to make a nonelective contribution of at least 3% of an
               Employee's Compensation to a defined compensation plan on behalf
               of each Non-Highly Compensated Employee who is eligible to
               participate in this Plan whether or not such Employee makes a
               Salary Reduction Contribution. The Matching Contribution
               Requirement is met if TOM BROWN, INC. makes Matching
               Contributions for each Non-Highly Compensated Employee equal to
               100% of the Salary Reduction Contribution of the Employee to the
               extent such Salary Reduction Contributions does not exceed 3% of
               the Employee's Compensation, and 50% of the Salary Reduction
               Contribution to the extent that such Salary Reduction
               Contribution exceeds 3% of Compensation, but does not exceed 5%
               of Compensation. The rate of Matching Contributions for Highly
               Compensated Employees cannot be greater than the rate of Matching
               Contributions for Non-Highly Compensated Employees at any rate of
               Salary Reduction Contributions. If the rate of Matching
               Contribution is not equal to the percentage required by the
               Matching Contribution Requirement, this Plan will nevertheless
               meet the Matching Contribution Requirement if the rate of
               Matching Contributions does not increase as an Employee's rate of
               Salary Reduction Contributions increases, and the aggregate
               amount of Matching Contributions at such rate is equal to or
               greater than the aggregate amount of Matching Contributions which
               would be made if Matching Contributions were made on the basis of
               the percentages specified above.

               F.     Adjustment to Actual Contribution Percentage Tests. If the
               "Actual Contribution Percentage" for the Highly Compensated
               Employee group exceeds the "Actual Contribution Percentage" for
               the Non-Highly Compensated Employee group by subsection 7.2, the
               Administrator (on or before the 15th day of the 3rd month
               following the end of the Plan Year, but 


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 15 of 41
   16

               not later than the close of the following Plan Year) directs the
               Trustee to distribute to the Highly Compensated Employee with the
               highest Matching TOM BROWN, INC. Contributions for that Plan
               Year, his portion of Excess Aggregate Contributions (i.e.,
               Matching TOM BROWN, INC. Contributions in excess of the limits
               established by the tests in subsection 7.2) and Income allocable
               to such contributions or, if forfeitable, forfeit such non-Vested
               Excess Aggregate Contributions attributable to Matching TOM
               BROWN, INC. Contributions (and Income allocable to such
               Forfeitures) until his Matching TOM BROWN, INC. Contributions for
               that Plan Year equal the Matching TOM BROWN, INC. Contributions
               for that Plan Year of the Highly Compensated Employee having the
               second highest Matching TOM BROWN, INC. Contributions for that
               Plan Year. This process continues until all Excess Aggregate
               Contributions are distributed.

               Any distribution and/or Forfeiture of less than the entire amount
               of Excess Aggregate Contributions (and Income) is treated as a
               pro rata distribution and/or Forfeiture of Excess Aggregate
               Contributions and Income. Distribution of Excess Aggregate
               Contributions are designated by TOM BROWN, INC. as a distribution
               of Excess Aggregate Contributions (and Income). Forfeitures of
               Excess Aggregate Contributions are treated by subsection 9.4.
               However, no such Forfeiture may be allocated to a Highly
               Compensated Employee whose contributions are reduced by this
               subparagraph.

               Excess Aggregate Contributions are treated as TOM BROWN, INC.
               contributions for Code Section 404 and Code Section 415 even if
               distributed from this Plan.

               For each Highly Compensated Employee, the amount of Excess
               Aggregate Contributions is equal to the Matching TOM BROWN, INC.
               Contributions made by subsection 5.2 (determined prior to the
               application of this paragraph) minus the amount determined by
               multiplying the Highly Compensated Employee's actual contribution
               ratio (determined after application of this paragraph) by his
               Gross Compensation. The actual contribution ratio is rounded to
               the nearest one-hundredth of one percent. The amount of Excess
               Contribution for any Highly Compensated Employee shall not exceed
               the amount of Matching TOM BROWN, INC. Contributions made by
               subsection 5.2 for such Highly Compensated Employee for such Plan
               Year.

               If the distribution of Excess Aggregate Contributions is made,
               the test in Code Section 401(m)(2) is deemed to be met regardless
               of whether the test in subsection 7.2, if recalculated after
               distribution of the Excess Aggregate Contributions, would satisfy
               Code Section 401(m)(2). For Code Section 401(m)(9), if a
               corrective distribution of Excess Aggregate Contributions is
               made, the Actual Contribution Percentage for Highly Compensated
               Employees is deemed to be the largest amount permitted by Code
               Section 401(m)(2).


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 16 of 41
   17



               G.     Safe Harbor Nondiscrimination Rules. This subparagraph
                      applies for Plan years beginning after 1998.

                      (4) Salary Reduction Contribution Safe Harbor.
                      Notwithstanding subsection 7.1, the test in Code Section
                      401(k)(3) is met if the Plan meets both the Notice
                      Requirement and the Contribution Requirements.

                      The Notice Requirement is met if each Employee eligible to
                      participate in the Plan is, within a reasonable period
                      before any Plan Year, given written notice of the
                      Employee's rights and obligations in this Plan. The notice
                      must be sufficiently accurate and comprehensive to apprise
                      the Employee of such rights and obligations, and be
                      written in a manner calculated to be understood by the
                      average Employee eligible to participate.

                      The Contribution Requirements are met if (i) the Matching
                      Contribution Requirement is met or (ii) TOM BROWN, INC. is
                      required to make a nonelective contribution of at least 3%
                      of an Employee's Compensation to a defined compensation
                      plan for each Non-Highly Compensated Employee eligible to
                      participate in this Plan whether or not such Employee
                      makes a Salary Reduction Contribution. The Matching
                      Contribution Requirement is met if TOM BROWN, INC. makes
                      Matching Contributions for each Non-Highly Compensated
                      Employee in an amount equal to 100% of the Salary
                      Reduction Contribution of the Employee to the extent such
                      Salary Reduction Contributions do not exceed 3% of the
                      Employee's Compensation, and 50% of the Salary Reduction
                      Contribution to the extent that such Salary Reduction
                      Contribution exceeds 3% of Compensation, but does not
                      exceed 5% of Compensation. The rate of Matching
                      Contributions for Highly Compensated Employees cannot be
                      greater than the rate of Matching Contributions for
                      Non-Highly Compensated Employees at any rate of Salary
                      Reduction Contributions. If the rate of Matching
                      Contribution is not equal to the percentage required by
                      the Matching Contribution Requirement, this Plan will
                      nevertheless meet the Matching Contribution Requirement if
                      the rate of Matching Contributions does not increase as an
                      Employee's rate of Salary Reduction Contributions
                      increases, and the aggregate amount of Matching
                      Contributions at such rate is equal to or greater than the
                      aggregate amount of Matching Contributions which would be
                      made if Matching Contributions were made on the basis of
                      such percentages.

                      (5) Matching TOM BROWN, INC. Contribution Safe Harbor.
                      Notwithstanding the terms of subsection 7.2, the test in
                      Code Section 401(m)(2) is met if this Plan meets the
                      Notice Requirement and the Contribution Requirements
                      described in subparagraph (1) above, and the Special
                      Limitation on Matching Contributions.


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 17 of 41
   18

                      The Special Limitation on Matching Contributions is met if
                      (i) Matching Contributions for any Employee may not be
                      made for an Employee's Salary Reduction Contributions in
                      excess of 6% of the Employee's Compensation, (ii) the rate
                      of Employer Matching Contributions does not increase as
                      the rate of an Employee's Salary Reduction Contributions
                      increases, and (iii) the Matching Contribution for any
                      Highly Compensated Employee at any rate of Employee
                      contribution or rate of Salary Reduction Contribution is
                      not greater than that for a Non-Highly Compensated
                      Employee.

8.      Selection of Investments; Employee Accounts and Allocation of Benefits.

        8.3 Establishment of Investment Funds. For each Plan Year, the Committee
        may designate and describe 1 or more investment funds available for the
        allocation of Participants' accounts. Subject to Section 13., the
        Trustee has the responsibility to decide the allocation of contributions
        made to the available Funds. TOM BROWN, INC. may delegate this
        responsibility to each Participant in a consistent and nondiscriminatory
        manner. If TOM BROWN, INC. so delegates the investment responsibility to
        Participants, each Participating Employee has the opportunity to
        designate how his account is allocated among the available Funds, by
        subsection 8.2.

        8.4 Selections. The designation by a Participant of the allocation of
        his account among the available investment funds may be made from time
        to time, with such frequency and by such procedures as established by
        the Committee and applied in a uniform nondiscriminatory manner. Any
        such procedure is communicated to the Participants and designed to
        permit the Participants to exercise control over the assets in their
        respective accounts in Code Section 404(c) of the Employee Retirement
        Income Security Act. If and to the extent that a Participant does not
        designate an allocation of his account by this subsection 8.2, the
        Committee selects a Fund or Funds to which such amount is allocated.
        Otherwise, the Committee instructs the Trustee to allocate and invest
        the assets of the Trust by the Participant's selections.

        If and to the extent that the account of a Participant or Beneficiary is
        directed by this subsection 8.2, no person who is otherwise a fiduciary
        is liable to the directing Participant or Beneficiary for any particular
        loss, for failure to diversify assets, or otherwise in such directed
        investment. No investment is directed by a Participant or Beneficiary,
        nor made by the Trustee even if so directed, which directly or
        indirectly inures to the benefit of TOM BROWN, INC. or which constitutes
        a prohibited transaction.

        8.5 Separate Records. The Trustee maintains a separate account in the
        name of each Participating Employee and each Beneficiary having a share
        in the Trust. Separate records are kept of:

               A.     the portion of each Participating Employee's share or
               account from 

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TOM BROWN, INC. 401(k) Retirement Plan                             Page 18 of 41
   19

               TOM BROWN, INC. contributions for a salary reduction agreement
               (such amounts to be recorded in a "Salary Reduction Contribution
               Account");

               B. the portion of each Participating Employee's share or account
               from Matching TOM BROWN, INC. Contributions intended to
               supplement amounts contributed by a salary reduction agreement
               (such amount to be recorded in a "Matching TOM BROWN, INC.
               Contribution Account");

               C.     the portion of each Participating Employee's share or
               account from TOM BROWN, INC.'s Discretionary Contributions (such
               amounts to be recorded in a "TOM BROWN, INC. Discretionary
               Contribution Account").

               D.     the portion of each Participating Employee's share or
               account from the Participating Employee's Rollover Contribution
               (such amount to be recorded in a "Rollover Contribution
               Account").

        References to the "share" or "account" of a Participating Employee, the
        word "share" or "account" where the context so permits, are deemed to
        refer severally to the Salary Reduction Contribution Account,

        TOM BROWN, INC. Discretionary Contribution Account, and the Rollover
        Contribution Account, each such account being adjusted for income and
        expense credited or charged as hereinafter described.

        8.6 Allocation of Income and Expenses. As of each Valuation Date, all
        income of this Plan for the period since the preceding Valuation Date is
        credited to, and all losses and expenses of this Plan for such period
        are charged to, the various Accounts maintained by the Trustee for the
        Participating Employees and Beneficiaries. Such credits and charges are
        made in proportion to the value of the respective Participating Employee
        and Beneficiary Accounts as of the preceding Valuation Date (after
        recording all credits and charges otherwise made based on Account
        balances as of the preceding Valuation Date). Further, the Trustee may
        adjust in a nondiscriminatory and consistent manner the credits and
        charges otherwise made based on Account balances as of the preceding
        Valuation Date to take into account inter-Fund transfers, periodic
        contributions for Participants, repayments of Participant loans or
        borrowing by Participants, Rollover contributions, or any other
        transactions occurring since the preceding Valuation Date.

        Any loan extended by the Trustee to a Participant pursuant to Section 11
        is deemed, for allocation of income, as an earmarked investment made for
        such Participant's benefit. All interest or other earnings attributable
        to such loan is allocated and credited exclusively to the account of the
        Participant to whom such loan was made.

        8.7 Revaluation of Assets. As of each Valuation Date, the Trustee
        revalues the various Accounts maintained by the Trustee for the
        Participating Employees and Beneficiaries, so that such Employee and
        Beneficiary Accounts reflect any increase 

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TOM BROWN, INC. 401(k) Retirement Plan                             Page 19 of 41
   20


        or decrease in fair market value of the assets of the Trust as of such
        date. Any such increase or decrease in market value is apportioned in
        the same manner that income, expenses, and losses are to be apportioned
        by the provisions of this Section 8.

        8.8 Unit Accounting. Notwithstanding the accounting procedures described
        in subsections 8.4 and 8.5, the Committee may, for administrative
        purposes, instruct the Trustee to establish unit values for one or more
        Funds (or any portion thereof) and maintain the accounts setting forth
        each Participant's interest in such Fund (or any portion thereof) in
        terms of such units, all by such rules and procedures as the Committee
        deems to be fair, equitable and administratively practicable. Any Pooled
        Investment Service Agreement so designed and adopted, is incorporated by
        reference. If unit accounting is established for any Fund (or any
        portion thereof) the value of a Participant's interest in such Fund at
        any time is an amount equal to the then value of a unit in such Fund (or
        any portion thereof) multiplied by the number of units then credited to
        the Participant.

        8.9 Allocation of Contributions. There is credited to the Salary
        Reduction Contribution Account of each Participant, from TOM BROWN,
        INC.'S current contribution, an amount equal to the amount set forth in
        the salary reduction agreement in effect with such Participant.

        At the end of each quarter, there is credited to the Matching TOM BROWN,
        INC. Contribution Account of each Participant who makes Salary Reduction
        Contributions, an amount equal to the periodic TOM BROWN, INC. Matching
        Contribution.

        As of the Anniversary Date ending each Plan Year for which Tom Brown,
        Inc. makes a year-end TOM BROWN, INC. Matching Contribution, there is
        credited to the Matching TOM BROWN, INC. Contribution Account of each
        Participant who entered into a salary reduction agreement for such year.

        As of the Anniversary Date ending each Plan Year for which TOM BROWN,
        INC. makes a Discretionary contribution, there is credited to the Tom
        Brown, Inc. Discretionary Account of each Participating Employee, an
        amount which bears the same ratio to the total of TOM BROWN, INC.'s
        Profit-Sharing Contribution as such Employee's Compensation for such
        year bears to the aggregate of the Compensation of all Participating
        Employees for such year.

        For a Participating Employee entitled to have credited to his account a
        portion of a TOM BROWN, INC. Discretionary contribution for such year
        but whose employment is terminated after the close of such year and
        before such contribution is made to this Plan and such credit effected,
        such credit is effected as though such Employee's employment does not
        terminate.

        In addition, from time to time there is credited to the Rollover
        Contribution Account of each Employee the amounts contributed by him to
        this Plan which is a Rollover 


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 20 of 41
   21

        Contribution.

        8.10 Limitation on Annual Additions. If the Participant does not
        participate in, and has never participated in another qualified plan
        maintained by TOM BROWN, INC. that has an annual addition as defined in
        subparagraph 8.10A., the amount of annual additions credited to the
        Participant's account for any limitation year does not exceed the lesser
        of the maximum permissible amount or any other limitation contained in
        this Plan. If the TOM BROWN, INC. contribution that would otherwise be
        contributed or allocated to the Participant's account causes the annual
        additions for the limitation year to exceed the maximum permissible
        amount, the amount contributed or allocated is reduced so that the
        annual additions for the limitation year equal the maximum permissible
        amount.

        Prior to determining the Participant's actual Compensation for the
        limitation year, TOM BROWN, INC. may determine the maximum permissible
        amount for a Participant on a reasonable estimate of the Participant's
        Compensation for the limitation year, uniformly determined for all
        Participants similarly situated. As soon as administratively feasible
        after the end of the limitation year, the maximum permissible amount for
        the limitation year is determined on the basis of the Participant's
        actual Compensation for the limitation year. If as a result of
        forfeitures or as a result of exceeding the maximum permissible amount
        there is an excess amount, the excess will be disposed of as follows:

               A.     Any contributions by a salary reduction agreement, to the
               extent they reduce the excess amount, are returned to the
               Participant;

               B.     If after the application of subparagraph A. an excess
               amount still exists, and the Participant is a Participant in this
               Plan at the end of the limitation year, the excess amount in the
               Participant's account is used to reduce TOM BROWN, INC.
               contributions (including any allocation of forfeitures) for such
               Participant in the next limitation year, and each succeeding
               limitation year if necessary;

               C.     If after the application of subparagraph A. an excess
               amount still exists, and the Participant is not a Participant in
               this Plan at the end of a limitation year, the excess amount is
               held unallocated in a suspense account. The suspense account is
               applied to reduce TOM BROWN, INC. contributions for all remaining
               Participants in the next limitation year, and each succeeding
               limitation year if necessary; and

               D.     If a suspense account is in existence at any time during a
               limitation year by this subsection, it does not participate in
               the allocation of this Plan's investment gains and losses. If a
               suspense account is in existence at any time during a particular
               limitation year, all amounts in the suspense account are
               allocated and reallocated to Participants' accounts before any
               TOM BROWN, INC. or Employee contributions are made to this Plan
               for that limitation year. Excess amounts are not distributed to
               Participants or former 


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 21 of 41
   22

        Participants.

        8.11 Combination With Other Plans. This subsection applies if, in
        addition to this Plan, the Participant is a Participant in another
        qualified defined contribution plan maintained by TOM BROWN, INC., a
        welfare benefit fund (in Code Section 419(e)) maintained by TOM BROWN,
        INC., or an individual medical account (in Code Section 415(1)(2)),
        maintained by TOM BROWN, INC., which provides an annual addition in
        subsection 8.10F., during any limitation year.

        The annual additions credited to a Participant's account by this Plan
        for any such limitation year do not exceed the maximum permissible
        amount reduced by the annual additions credited to a Participant's
        account by the other plans and welfare benefit funds for the same
        limitation year. If the annual additions for the Participant in other
        defined contribution plans and welfare benefit funds maintained by TOM
        BROWN, INC. are less than the maximum permissible amount and TOM BROWN,
        INC. contribution that would otherwise be contributed or allocated to
        the Participant's account by this Plan causes the annual additions for
        the limitation year to exceed this limitation, the amount contributed or
        allocated is reduced so that the annual additions by all such plans and
        funds for the limitation year equal the maximum permissible amount. If
        the annual additions for the Participant by such other defined
        contribution plans and welfare benefit funds in the aggregate are equal
        to or greater than the maximum permissible amount, no amount is
        contributed or allocated to the Participant's account by this Plan for
        the limitation year.

        Prior to determining the Participant's actual compensation for the
        limitation year, TOM BROWN, INC. may determine the maximum permissible
        amount for a Participant as described in subsection 8.8. As soon as is
        administratively feasible after the end of the limitation year, the
        maximum permissible amount for the limitation year is determined on the
        basis of the Participant's actual Compensation for the limitation year.
        If forfeitures, or the excess over the maximum permissible amount, cause
        a Participant's annual additions in this Plan and such other plans cause
        an excess amount for a limitation year, the excess amount is deemed to
        consist of the annual additions last allocated, except annual additions
        attributable to a welfare benefit fund or individual medical account are
        deemed allocated first regardless of the actual allocation date. If an
        excess amount is allocated to a Participant on an allocation date of
        this Plan which coincides with an allocation date of another plan, the
        excess amount attributed to this Plan is the product of:

               A.     the total excess amount allocated as of such date, times

               B.     the ratio of (i) the annual additions allocated to the
               Participant for the limitation year as of such date by this Plan
               to (ii) the total annual additions allocated to the Participant
               for the limitation year as of such date by this and all the other
               qualified defined contribution plans.

               Any excess amount attributed to this Plan is disposed by
               subsection 8.8.


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 22 of 41
   23

               For limitation years beginning before 2000, if TOM BROWN, INC.
               maintains, or at any time maintained, a qualified defined benefit
               plan covering any Participant in this Plan, the sum of the
               Participant's defined benefit plan fraction and defined
               contribution plan fraction shall not exceed 1.0 in any limitation
               year. The annual additions credited to the Participant's account
               by this Plan for any limitation year are reduced or limited by
               the Trustee in a uniform and nondiscriminatory manner to effect
               the foregoing limitation.

        8.12   Code Section 415 Definitions.

               A.     Annual additions are the sum of the following amounts
               credited to a Participant's account for the limitation year:

                      (6) Employer contributions,

                      (7) Employee contributions, and

                      (8) forfeitures.

               Any excess amount applied by subsections 8.8 or 8.9 in the
               limitation year to reduce TOM BROWN, INC. contributions are
               considered annual additions for such limitation year.

               B.     Compensation. A Participant's wages, salaries, and fees
               for professional services and other amounts received for personal
               services actually rendered in the employment with TOM BROWN, INC.
               (including, but not limited to, commissions paid salesmen,
               compensation for services on the basis of a percentage of
               profits, commissions on insurance premiums, tips and bonuses),
               and including any elective deferral (in Code Section 402(g)(3)),
               and any amount contributed or deferred by TOM BROWN, INC. at the
               election of the Employee and not includible in the gross income
               of the Employee by Code Section 125 or Code Section 457, but
               excluding the following:

                      (9) Any distributions from a plan of deferred
                      compensation;

                      (10) Amounts realized from the exercise of a nonqualified
                      stock option, or when restricted stock (or property) held
                      by the Employee either becomes freely transferable or is
                      no longer subject to a substantial risk of forfeiture;

                      (11) Amounts realized from the sale, exchange or other
                      disposition of stock acquired by a qualified stock option;
                      and

                      (12) Other amounts which received special tax benefits, or
                      contributions made by TOM BROWN, INC. (whether or not by a
                      salary reduction agreement) towards the purchase of an
                      annuity described in Code Section 403(b) (whether or not
                      the amounts are actually excludible from the gross income
                      of the Employee).


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 23 of 41
   24

               For applying the limitations of this Section, Compensation for a
               limitation year is the Compensation actually paid or includible
               in gross income during such limitation year.

               Notwithstanding the preceding sentence, Compensation for a
               Participant in a defined contribution plan who is Disabled is the
               Compensation such Participant would have received for the
               limitation year if the Participant had been paid at the rate of
               Compensation paid immediately before becoming Disabled; such
               imputed Compensation for the Disabled Participant may be taken
               into account only if the Participant is not a Highly Compensated
               Employee and contributions made on behalf of such Participant are
               nonforfeitable when made.

               C.     Defined benefit fraction is a fraction, the numerator of
               which is the sum of the Participant's projected annual benefits
               by all the defined benefit plans (whether or not terminated)
               maintained by TOM BROWN, INC., and the denominator of which is
               the lesser of 125% of the dollar limitation determined for the
               limitation year by Code Section 415(b) and Code Section 415(d) or
               140% of the highest average compensation, including any
               adjustments by Code Section 415(b).

               D.     Defined contribution dollar limitation is $30,000.

               E.     Defined contribution fraction is a fraction, the numerator
               of which is the sum of the annual additions to the Participant's
               account by all the defined contribution plans (whether or not
               terminated) maintained by TOM BROWN, INC. for the current and all
               prior limitation years (including the annual additions
               attributable to the Participant's nondeductible employee
               contributions to all defined benefit plans, whether or not
               terminated, maintained by TOM BROWN, INC., and the annual
               additions attributable to all welfare benefit funds (in Code
               Section 419(e)), and individual medical accounts (in Code Section
               415(1)(2)), maintained by TOM BROWN, INC.), and the denominator
               of which is the sum of the maximum aggregate amounts for the
               current and all prior limitation Years of Service with TOM BROWN,
               INC. (regardless of whether a defined contribution plan was
               maintained by TOM BROWN, INC.). The maximum aggregate amount in
               any limitation year is the lesser of 125% of the dollar
               limitation in Code Section 415(b) and Code Section 415(d) in
               effect by Code Section 415(c)(1)(A) or 35% of the Participant's
               Compensation for such year.

               F.     Employer. Subparagraphs 8.8, 8.9 and 8.10 apply to TOM
               BROWN, INC., and all members of a controlled group of
               corporations (in Code Section 414(b) as modified by Code Section
               415(h)), all commonly controlled trades or businesses (in Code
               Section 414(c) as modified by Code Section 415(h)) or affiliated
               service groups (in Code Section 414(m)) of which TOM BROWN, INC.
               is a part, and any other entity required to be aggregated with
               TOM 

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TOM BROWN, INC. 401(k) Retirement Plan                             Page 24 of 41
   25


               BROWN, INC. by Code Section 414(o).

               G.     Excess amount is the excess of the Participant's annual
               additions for the limitation year over the maximum permissible
               amount.

               H.     Highest average compensation is the average compensation
               for the 3 consecutive Years of Service with TOM BROWN, INC. that
               produces the highest average.

               I.     Limitation year is a calendar year, or the 12-consecutive
               month period elected by TOM BROWN, INC..

               J.     Maximum permissible amount. The maximum annual addition
               that may be contributed or allocated to a Participant's account
               by this Plan for any limitation year shall not exceed the lesser
               of:

                      (13  the defined contribution dollar limitation, or

                      (14  25% of the Participant's Compensation for the
                      limitation year.

               The Compensation limitation referred to in (2) does not apply to
               any contribution for medical benefits (in Code Section 401(h) or
               Code Section 419A(f)(2)) otherwise treated as an annual addition
               by Code Section 415(l)(1) or Code Section 419A(d)(2).

               If a short limitation year is created by an amendment changing
               the limitation year to a different 12-consecutive month period,
               the maximum permissible amount does not exceed the defined
               contribution dollar limitation multiplied by the following
               fraction:

                             Number of months in the short limitation year
                             ---------------------------------------------
                                                 12

               K.     Projected Annual Benefit is the annual retirement benefit
               (adjusted to an actuarially equivalent straight life annuity if
               such benefit is expressed in a form other than a straight life
               annuity) or qualified joint and survivor annuity to which the
               Participant is entitled by this Plan assuming:

                      (1  the Participant continues employment until Normal
                      Retirement Age by the Plan (or current age, if later), and

                      (2  the Participant's Compensation for the current
                      limitation year and all other relevant factors used to
                      determine benefits by the Plan remains constant for all
                      future limitation years.

9.      Retirement and Severance.

        9.1 Normal Retirement, Etc. When a Participant reaches the Normal
        Retirement 


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 25 of 41
   26

        Age of 65, such Participant's account is fully vested and
        nonforfeitable. If the employment of a Participating Employee terminates
        at any time from the death or Disability of such Participating Employee,
        such Participant's account is fully vested and nonforfeitable from and
        after the date of termination of employment. Payment of benefits by this
        Plan to or on behalf of such Participant is made by Section 10.

        9.2 Vested Benefits; Termination of Employment. The portion of a
        Participating Employee's share in this Plan allocated to the Salary
        Reduction Contribution Account and the Rollover Contribution Account is
        at all times fully and immediately vested in such Employee. This
        portion, together with the vested portion of TOM BROWN, INC.
        Discretionary Contribution Account, determined by the schedule set forth
        below, depending upon such Participant's Vesting Years of Service
        completed to the date of termination of employment is paid to or on
        behalf of such Participant as provided by this Plan.

        The vesting schedule applicable to a Participant's TOM BROWN, INC.
        Discretionary Contribution Account shall be as follows:

                                                          Vested
        Vesting Years of Service                          Percentage

        Less than 2 years                                 20%
        2 or more, but less than 3                        40%
        3 or more, but less than 4                        60%
        4 or more, but less than 5                        80%
        5 years or more                                   100%

        Any amount not vested by the foregoing vesting schedule constitutes a
        Forfeiture as of the date of termination of employment, and applied by
        subsection 9.4.

        For a terminated Participating Employee who incurs 5 consecutive
        One-Year Breaks in Service, Vesting Years of Service after such break
        are not taken into account to determine the vested percentage of his
        account accrued prior to such 5 consecutive One-Year Breaks in Service.

        For a Participating Employee whose interest in this Plan is distributed
        on termination of participation and is not repaid by subsection 9.3
        below, any Service after the distribution date does not increase the
        amount of the Participant's non-forfeitable benefit in this Plan as
        computed at the time of distribution. Separate accounts for the
        pre-break and post-break portions of such person's interest in this Plan
        are maintained, if and to the extent necessary to properly reflect this
        subsection.

        9.3 Restoration of Vesting Service and Forfeited Amounts. Any amount
        forfeited by subsection 9.2 is restored to the credit of a former
        Participant who previously terminated employment by:

               A.     A former Participant resumes employment with TOM BROWN,
               INC. and becomes eligible to re-enter the Plan by subsection 9.2
               before having 


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 26 of 41
   27

               received a distribution from this Plan; or

               B.     A former Participant who received a distribution from this
               Plan resumes employment with TOM BROWN, INC. and becomes eligible
               to re-enter this Plan by subsection 9.2 before incurring 5
               consecutive One-Year Breaks in Service, and repays to this Plan
               the full amount of the distribution previously received
               (unadjusted by any later gains or losses). Such repayment must be
               made before the Anniversary Date ending the Plan Year within
               which the Participant incurs a 5th consecutive One-Year Break in
               Service.

        If a restoration of previously forfeited amounts occurs because of the
        circumstance in subparagraph A., the prior amount of forfeiture is
        restored with adjustment for any subsequent gains or losses, as
        determined by the Committee. If a restoration of previously forfeited
        amounts occurs because of the circumstance described in subparagraph B.,
        the prior amount of forfeiture is restored without adjustment for any
        subsequent gains or losses. If a Participant terminates employment with
        TOM BROWN, INC. at a time when his vested account balance is zero, he is
        deemed to receive a distribution of his vested account balance and
        treated as a former Participant in subparagraph B. On re-entry into this
        Plan, such a Participant has his previously forfeited amount restored
        without adjustment for any subsequent gains or losses.

        Funds needed in any Plan Year to reinstate the amount previously
        forfeited by a re-employed Participant are provided first by Forfeitures
        occurring during that Plan Year, and second, if necessary, by TOM BROWN,
        INC. by a separate Plan contribution.

        If a previously forfeited amount is later restored by this subsection,
        upon a subsequent termination of employment, the Participant's vested
        interest is determined by the foregoing vesting schedule as if no
        previous separation from service occurs.

        9.4 Treatment of Forfeitures. The nonvested portion of a Participant's
        account by the Plan is a Forfeiture. Any such Forfeiture for a TOM
        BROWN, INC. Discretionary Contribution Account is reallocated to the
        accounts of those persons who, on the Anniversary Date ending the Plan
        Year during which the Forfeiture occurs are eligible to participate in
        TOM BROWN, INC. Discretionary contributions for such Plan Year, and is
        allocated as TOM BROWN, INC. Discretionary contributions to this Plan
        are allocated by subsection 8.7.

        Any such Forfeiture of a Participant's Matching TOM BROWN, INC.
        Contribution Account is used to reduce the Company's Matching TOM BROWN,
        INC. Contributions to this Plan, and are not used to increase the
        benefits of the Participants and Beneficiaries.

10.     Distribution of Benefits.


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 27 of 41
   28

        10.1 Normal Form of Payment. The normal form of distribution of benefits
        by this Plan to an unmarried Participant who retires or whose employment
        with TOM BROWN, INC. is otherwise terminated is a single life annuity.

        The normal form of distribution of benefits by this Plan to a married
        Participant who retires or whose employment with TOM BROWN, INC. is
        otherwise terminated, is a qualified Joint and Survivor Annuity. The
        Qualified Joint and Survivor Annuity consists of an immediate annuity
        for the life of the Participating Employee, with a survivor annuity for
        the life of his or her spouse which is equal to 50% of the amount of the
        annuity payable during the joint lives of the Participating Employee and
        the spouse, and which is the actuarial equivalent of a single annuity
        for the life of the Participating Employee. Payment of the normal form
        of benefit begins as of the first day of the month after the
        Participant's attainment of Normal Retirement Age, unless subsection
        10.5 applies, when case distribution is immediate in the form of a cash
        lump sum. Notwithstanding the foregoing, the Participant may elect to
        have such annuity distributed as soon as administratively feasible after
        termination of employment, if the Participant and the Participant's
        spouse consent to the distribution. If there is an effective waiver of
        the Qualified Joint and Survivor Annuity form of payment, by subsection
        10.6, the amount payable to the Participating Employee (or his or her
        Beneficiary) is paid by subsection 10.2.

        10.2 Alternative Form of Payment. If there is an effective waiver of the
        normal form of payment of benefits by subsection 10.1, a Participant's
        benefit is paid in a cash lump sum or any annuity form of payment
        available to Participants by subsection 10.2. A Participant who
        terminates employment after attaining Normal Retirement Age receives or
        begins to receive his benefit within 60 days after the Anniversary Date
        after his termination of employment. A Participant who terminates
        employment prior to his attaining Normal Retirement Age has the option
        to receive, at his or her election, a distribution of his or her entire
        benefit to begin as soon as administratively feasible after the
        Participant's termination of employment with TOM BROWN, INC..

        10.3 Other Rules for Beginning and Duration of Benefits. The entire
        interest in this Plan of any Participating Employee must be, or begin to
        be, distributed before the required beginning date. For a Participant
        who is not a 5% owner, the required beginning date is the April 1 of the
        calendar year following the later of (i) the calendar year the
        Participant attains age 70-1/2, or (ii) the calendar year the
        Participant retires.

        The required beginning date for a Participant who is a 5% owner (in Code
        Section 416(i)) is April 1 of the calendar year following the calendar
        year the Participant attains age 70-1/2.

        Benefits are distributed over a period not to exceed the life of the
        Participant, the life of the Participant and his designated Beneficiary,
        the life expectancy of the Participating Employee, or the joint life
        expectancy of the Participating Employee and his designated Beneficiary.
        If the Participant's entire interest is to be distributed 


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 28 of 41
   29

        in a form other than a lump sum, the amount to be distributed each year
        must be at least equal in amount to the quotient obtained by dividing
        the Participant's entire interest by the lesser of (i) the applicable
        life expectancy (ii) if the Participant's spouse is not the designated
        Beneficiary, the applicable divisor from the table set forth in Q&A-4 of
        Prop Reg ss. 1.401(a)(9)-2. For this computation, the life expectancy of
        the Participant may be recalculated no more frequently than annually,
        but the life expectancy of a nonspouse Beneficiary may not be
        recalculated. Payments shall not be delayed in violation of Code Section
        401(a)(14).

        10.4 Death Benefits; Beneficiary Designation; Distribution of Death
        Benefits. If a Participant dies, his accrued benefit is paid in full as
        soon as practicable to his surviving spouse, as his Beneficiary.
        Distribution is made as an immediate single life annuity unless the
        surviving spouse otherwise elects to receive payment in the form of a
        single cash lump sum. Notwithstanding the foregoing, however, a
        Participant may designate a Beneficiary other than the Participant's
        spouse if (1) the spouse has waived his or her right to be the
        Participant's Beneficiary by this subsection 10.4; or (2) the
        Participant has no spouse; or (3) the spouse cannot be located.

        The designation of a Beneficiary, other than a spouse, is made on a form
        satisfactory to TOM BROWN, INC.. A Participant may at any time revoke
        his designation of a Beneficiary or change his Beneficiary by filing
        written notice of such revocation or change with TOM BROWN, INC..
        However, the Participant's spouse must again consent in writing to any
        such change or revocation. Any consent by the Participant's spouse to
        waive any rights to the death benefit must be in writing, must
        acknowledge the effect of such waiver, and be witnessed by a Plan
        representative or a notary public. If no valid designation of
        Beneficiary exists at the Participant's death, and the Participant has
        no surviving spouse, the death benefit is payable to his estate.

        If payments are made to a non-spouse Beneficiary, because of a
        Participant's death (or the death of a Participant's spouse), the entire
        interest of the Participant is distributed to such Beneficiary within 5
        years after such death.

        10.5 Small Distributions. Notwithstanding the normal form of payment of
        benefits as a Qualified Joint and Survivor Annuity, and the distribution
        of death benefits as a single life annuity to the Participating
        Employee's surviving spouse, the Trustee makes distribution of the
        present value of such annuity (or other benefit available by the Plan)
        in cash if the value of such annuity or other benefit does not exceed,
        nor has ever exceeded, $5,000.

        10.6 Waiver of Form of Benefit; Notification. A Participant may, during
        the Applicable Election Period, (i) elect to waive the Qualified Joint
        and Survivor Annuity form of benefit, and (ii) elect an alternate
        Beneficiary. A Participant may revoke any such election any number of
        times within the Applicable Election Period. Such elections do not take
        effect unless (i) the spouse of the Participant consents in writing to
        such election, and the spouse's consent acknowledges the effect of such


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 29 of 41
   30

        election and is witnessed by a Plan representative or a notary public,
        or (ii) it is established to the satisfaction of a Plan representative
        that such consent may not be obtained because there is no spouse,
        because the spouse cannot be located, or because of such other
        circumstances as are prescribed by regulations of the Secretary of
        Treasury. Any consent by a spouse (or establishment that the consent of
        a spouse may not be obtained) is effective only for such spouse and is
        limited to a specific alternate Beneficiary (or a form of benefits)
        unless such consent expressly permits designations by the Participant
        without any requirement of further consent by the spouse. Without such a
        provision, any new waiver or change of Beneficiary requires a new
        spousal consent. For this subsection, the term "Applicable Election
        Period" is the 90-day period ending on the Annuity Starting Date.

        This Plan provides to each Participating Employee a written explanation
        of the following:

               A.     the terms and conditions of the Qualified Joint and 
               Survivor Annuity;

               B.     the Participant's right to make, and the effect of, an
               election to waive the Qualified Joint and Survivor Annuity form
               of benefit;

               C.     the rights of the Participant's spouse for such election; 
               and

               D.     the right to make, and the effect of, a revocation of such
               election.

        The written explanation of the Qualified Joint and Survivor Annuity is
        provided no less than 30 days and no more than 90 days prior to the
        Annuity Starting Date. However, the written explanation may be provided
        after the Annuity Starting Date. The 90-day applicable election period
        to waive the Qualified Joint and Survivor Annuity does not end before
        the 30th day after the date such explanation is provided. The Secretary
        of the Treasury may, by regulations, limit the period of time by which
        the Annuity Starting Date precedes the provision of the written
        explanation other than by providing that the Annuity Starting Date may
        not be earlier than termination of employment.

        A Participant may elect (with any applicable spousal consent) to waive
        any requirement that the written explanation be provided at least 30
        days before the Annuity Starting Date (or to waive the 30-day
        requirement by the above paragraph) if the distribution begins more than
        7 days after such explanation is provided.

        10.7 Segregated Accounts. Amounts credited to the accounts of
        Participants whose employment has terminated or Beneficiaries not paid
        out may be held with other assets of this Plan or may be held separately
        from the assets held for the benefit of other Participating Employees.
        If so segregated, the Trustee invests such segregated accounts in
        savings accounts, certificates of deposit, Treasury bills, bonds, or
        similar interest-bearing investments, as instructed by the Committee,
        regardless of the investment policy adopted for the balance of the Trust
        assets. In so doing, the Committee shall not discriminate in favor of
        one or some retired Employees or Beneficiaries as against one or some
        other retired Employees or 

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TOM BROWN, INC. 401(k) Retirement Plan                             Page 30 of 41
   31


        Beneficiaries. Each such payee is credited or charged with appropriate
        adjustments for earnings, losses, and revaluations of the segregated
        amount being held for his benefit; all such adjustments are made as of
        each Anniversary Date as adjustments to other assets of this Plan.
        Nothing in this subsection, however, entitles such payee to share in any
        TOM BROWN, INC. contributions to this Plan he would not otherwise be
        entitled to share by this Plan.

        10.8 Location of Participant or Beneficiary Unknown. If all, or any
        portion, of the distribution payable to a Participant or his Beneficiary
        at the expiration of 5 years after it is payable, remains unpaid solely
        for the inability of the Committee, after sending a registered letter,
        return receipt requested, to the last known address, and after further
        diligent effort, to ascertain the whereabouts of such Participant or his
        Beneficiary, the amount so distributable is reallocated in the same
        manner as Forfeitures are allocated by subsection 9.4. If a Participant
        or Beneficiary is located subsequent to his benefit being reallocated,
        such benefit is restored.

        10.9 Special Distribution Rules Applicable to Qualified Domestic
        Relations Order. If all, or any portion of the amounts credited to the
        accounts of a Participant are required to be paid to an alternate payee
        by any Qualified Domestic Relations Order ("QDRO"), as that term is
        defined in Section 12, the Committee instructs the Trustee to distribute
        to such designated alternate payee all amounts required by the QDRO
        whether or not the Participant is entitled to a distribution of his
        account by virtue of termination of employment or attainment of
        retirement age. The alternate payee of the QDRO has the option to
        receive, at his or her election, the entire amount required by the QDRO
        in the form of a cash lump sum as soon as administratively feasible
        after the Committee's receipt and verification of the QDRO.

        10.10 Direct Rollovers. A distributee may elect, at the time and in the
        manner prescribed by the Committee, to have any portion of an eligible
        rollover distribution paid directly to an eligible retirement plan
        specified by the distributee in a direct rollover.

        For this subsection 10.10:

               A.     Eligible rollover distribution is any distribution of all
               or any portion of the balance to the credit of the distributee,
               except an eligible rollover distribution does not include: any
               distribution that is one of a series of substantially equal
               periodic payments (not less frequently than annually) made for
               the life (or life expectancy) of the distributee or the joint
               lives (or joint life expectancies) of the distributee and the
               distributee's designated beneficiary, or for 10 years or more;
               any distribution required by Code Section 401(a)(9); and the
               portion of any distribution not includible in gross income
               (without the exclusion of net unrealized appreciation with
               respect to employer securities).

               B.     Eligible retirement plan is an individual retirement
               account in Code Section 408(a), an individual retirement annuity
               in Code Section 408(b), an annuity plan in Code Section 403(a),
               or a qualified trust in Code Section 


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 31 of 41
   32

               401(a), that accepts the distributee's eligible rollover
               distribution. However, for an eligible rollover distribution to
               the surviving spouse, an eligible retirement plan is an
               individual retirement account or individual retirement annuity.

               C.     Distributee includes an Employee or former Employee. In
               addition, the Employee's or former Employee's surviving spouse
               and the Employee's or former Employee's spouse or former spouse
               who is the alternate payee by a qualified domestic relations
               order, in Code Section 414(p) are distributees for the interest
               of the spouse or former spouse.

               D.     Direct rollover is a payment by this Plan to the eligible
               retirement plan specified by the distributee.

11.     Loans to Participating Employees.

The Committee, in its discretion, may authorize a loan to a Participant who is a
party in interest, within ERISA ss. 3(14), upon receipt of a written request
from the Participant. The total amount of any such loan (when added to the
outstanding balance of all other loans to the Participant by the Plan or any
other qualified plan of the Employer) cannot exceed the lesser of $50,000 or 50%
of the value of the Participant's vested Account Balance. The $50,000 limitation
is reduced by the excess, if any, of the highest outstanding balance of loans
from the Plan during the one-year period ending on the day before such loan is
made over the outstanding balance of loans from the Plan on the date that such
loan is made.

A Participant can have only one outstanding loan and payments must be made by
payroll deduction.

A request by a Participant for a loan is made in writing to the Committee and
specifies the amount of the loan, and the account(s) of the Participant from
which the loan is to be made. The terms and conditions on which the Committee
approves loans by this Plan are applied on a reasonably equivalent basis for all
Participants. If a Participant's request for a loan is approved by the
Committee, the Committee arranges for the distribution of the specified amount
in a single sum payment of cash to the Participant.

Loans are made on such terms and subject to such limitations as the Committee
prescribes, provided any such loan is evidenced by a written promissory note,
bears a reasonable rate of interest on the unpaid principal, is adequately
secured, and will be repaid by the Participant over a period not to exceed 5
years, unless the loan is for the purpose of acquiring a dwelling unit used or
to be used within a reasonable time as the principal residence of the
Participant. The interest rate charged on a loan must be at least equivalent to
the prevailing interest rate charged by persons in the business of lending money
for loans which would be made by similar circumstances. Loan repayments are
suspended while a Participant is performing service in the Uniformed Services by
Code Section 414(i)(4).

Any loan to a Participant is secured by the pledge of 50% of the Participant's
right, title, and interest in his Account. The pledge will be evidenced by the
execution of a promissory 


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 32 of 41
   33

note by the Participant.

The Committee has the sole responsibility to ensure that a Participant timely
makes all scheduled loan repayments. Repayment is paid to the Trust, and is to
be accompanied by written instructions from the Committee identifying the
Participant on whose behalf the loan repayment is being made. Each loan is
amortized on a substantially level basis, with payments at least quarterly over
the term of the loan. A loan may be prepaid without penalty at any time.

If the Participant's employment with TOM BROWN, INC. terminates or there is a
default by a Participant on a loan repayment, all remaining principal payments
on the loan are immediately due and payable. The Committee is authorized (to the
extent permitted by law) to take any and all actions necessary and appropriate
to enforce collection of an unpaid loan. However, on a default, foreclosure on
the note and attachment of security does not occur until a distributable event
occurs by this Plan. A default is deemed to have occurred if any loan payment is
not made within 90 days of when the payment is due by the Participant.

On a Participant's retirement or death or on a Participant's termination of
employment or earlier distribution, the unpaid balance of any loan, including
any unpaid interest, is deducted from any payment or distribution from this Plan
to which the Participant or his designated Beneficiary are entitled and the
vested interest in the account is correspondingly reduced.

The Committee issues written loan guidelines, which forms part of this Plan,
describing the procedures and conditions for making loans, and may revise the
guidelines at any time, and for any reason.

A Participant must obtain the consent of his or her spouse, if any, to use of
the account balance as security for the loan. Spousal consent shall be obtained
no earlier than the beginning of the 90-day period that ends on the date on
which the loan is to be so secured. The consent must be in writing, must
acknowledge the effect of the loan, and must be witnessed by a plan
representative or notary public. Such consent is binding for the consenting
spouse or any subsequent spouse for that loan. A new consent is required if the
account balance is used for renegotiation, extension, renewal, or other revision
of the loan.

12.     Spendthrift Clause.

The rights of a Participant or Beneficiary to receive payments or benefits from
this Plan are not subject to alienation or assignment, and are not subject to
anticipation, encumbrance or claims of creditors. Notwithstanding the foregoing,
this Plan shall pay benefits by the terms of any Qualified Domestic Relations
Order, if such Order (i) does not require this Plan to provide any type or form
of benefits, or any option not otherwise provided, (ii) does not require this
Plan to provide increased benefits, and (iii) does not require the payment of
benefits to an alternate payee required to be paid to another alternate payee by
another order previously determined to be a Qualified Domestic Relations Order.
A "Domestic Relations Order" is any judgment, decree or order (including
approval of a property 


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 33 of 41
   34

settlement agreement) which relates to the provision of child support, alimony
payments, or marital property rights to a spouse, former spouse, child, or other
dependent of a Participant and is made pursuant to a state domestic relations
law. "Qualified Domestic Relations Order" is a Domestic Relations Order which
creates or recognizes the existence of an alternate payee's right to, or assigns
to an alternate payee the right to, receive all or a portion of the benefits
payable with respect to a Participant by this Plan and which clearly specifies
(i) the name and the last known mailing address of the Participant and each
alternate payee covered by the Order, (ii) the amount or percentage of the
Participant's benefits to be paid by this Plan to each such alternate payee, or
the manner in which such amount or percentage is to be determined, (iii) the
number of payments or period to which such Order applies, and (iv) each plan to
which such Order applies. A distribution by the estate of a deceased Participant
or Beneficiary to an heir or legatee of a right to receive payments is not
deemed an alienation, assignment or anticipation for this Section 12.

13.     Administration of Plan Trust.

The Committee and TOM BROWN, INC. administer this Plan for the benefit of all
Participating Employees and Beneficiaries, without discrimination in favor of
one or some Participating Employees or Beneficiaries as against one or some
other Participating Employees or Beneficiaries.

Whenever action is required by TOM BROWN, INC. or the Committee, it may be taken
by any individual designated as agent for the purpose. TOM BROWN, INC. or the
Committee notify the Trustee of any change of agent.

14.     Administrative Committee.

The Committee is a body appointed by TOM BROWN, INC. and, subject to the terms
of this Plan, has general supervision of the administration of this Plan.

The members of the Committee elect from their number a chairman and appoint a
secretary who need not be a member of the Committee. They may appoint any person
or persons to have such duties in connection with administration of this Plan as
the Committee may from time to time provide. The Committee may appoint from
their number such subcommittees with such powers as the Committee determines,
and may authorize one or more of their number, any person or persons having
duties for administration of this Plan or any agent to execute or deliver any
instrument or make any payment on their behalf, except a request for funds from
or a direction for, the payment or application of funds by the Insurance Company
shall be signed by at least one member of the Committee. The Committee may
retain such legal counsel and accountants, who may or may not be in the employ
of TOM BROWN, INC., actuaries, and such clerical services as it may require in
carrying out this Plan.

The Committee holds meetings upon such notice, at such time or times, and at
such place or places as it may determine. A majority of the members of the
Committee at the time in office constitutes a quorum for the transaction of
business at all meetings. All resolutions or other actions taken by the
Committee are by a vote of a majority of the members, if they act without a
meeting.


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 34 of 41
   35

The Committee may from time to time establish rules for the administration of
this Plan. Except as otherwise herein expressly provided, the Committee has the
exclusive right to interpret this Plan and to decide any matters arising
hereunder in the administration and operation of this Plan. It shall endeavor to
act by general rules so as not to discriminate in favor of any person.

The members of the Committee are free from all liability, joint or several, for
their acts as members of such Committee, except to the extent that they may have
been guilty of misconduct, or except to the extent otherwise required by the
Employee Retirement Income Security Act of 1974.

The members of the Committee serve without compensation for their services. All
reasonable and necessary costs, expenses and liabilities incurred by the
Committee in the supervision of the administration of this Plan and the Group
contract shall be paid by TOM BROWN, INC. separate and apart from the
Contributions to this Plan.

The Committee and its individual members are indemnified by TOM BROWN, INC. and
not from this Plan against any and all liabilities arising by reason of any act
or failure to act made in good faith pursuant to this Plan, including expenses
reasonably incurred in the defense of any claim.

15.     Allocation of Responsibilities.

        15.1 Administrative Responsibilities. The Committee is the Named
        Fiduciary which has the authority to control and manage the operation
        and administration of the Plan. TOM BROWN, INC. shall make such rules,
        regulations, interpretations, and shall take such other actions to
        administer the Plan as TOM BROWN, INC. may deem appropriate. In
        administering the Plan, TOM BROWN, INC. acts in a nondiscriminatory
        manner for Plan Participants and Beneficiaries, and at all times
        discharges its duties for this Plan by applicable fiduciary standards.

        15.2 Management of Plan Assets. TOM BROWN, INC. is the Named Fiduciary
        for control and management of this Plan's assets only to the extent that
        it (i) appoints one or more Trustees to hold the assets of the Plan in
        trust, (ii) appoints one or more Investment Managers for any Plan assets
        and enters into an investment management agreement with each Investment
        Manager it appoints, and (iii) exercises its authority to direct the
        sale, investment or reinvestment of Plan assets. TOM BROWN, INC. is
        responsible for diversifying the investments of this Plan only if it
        directs investments, and the Trustee and the Investment Managers, if
        any, are responsible for diversifying the specific investments in
        accounts by their management.

        15.3 Trustee and Investment Managers. The Trustee has the exclusive
        authority and discretion to control and manage the assets of this Plan,
        and is the Named Fiduciary for such control and management, except to
        the extent that TOM BROWN, 


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 35 of 41
   36

        INC. exercises its authority to direct investment of this Plan's assets,
        or the authority to manage such assets is allocated by TOM BROWN, INC.
        to one or more Investment Managers. Each Investment Manager appointed by
        TOM BROWN, INC. has the authority to manage, including the power to
        acquire and dispose of, such assets of this Plan assigned to it by TOM
        BROWN, INC..

        15.4 Delegation of Fiduciary Responsibilities. Except as otherwise
        expressly stated herein, TOM BROWN, INC. does not allocate or delegate
        to any other person any of its duties and responsibilities. The duties
        and responsibilities of TOM BROWN, INC. are carried out by TOM BROWN,
        INC.'S Directors and officers, acting on behalf of and in the name of
        TOM BROWN, INC. in their capacities as such, and not as individual
        fiduciaries. TOM BROWN, INC. is specifically prohibited from designating
        any Director or officer of TOM BROWN, INC. as a fiduciary and from
        allocating or delegating to any such person any of the fiduciary
        responsibilities of TOM BROWN, INC..

16.     Amendments.

TOM BROWN, INC. reserves the right by action of its Board of Directors to amend
this Plan at any time without the consent of the Trustee, but no such amendment
shall cause or permit any portion of the principal or income of the Trust to
revert to or become the property of or be used for the benefit of TOM BROWN,
INC.. Any amendment necessary to bring this Trust into conformity with
government laws or regulations in order to qualify this Plan and Trust for tax
exemption may be made retroactively. No amendment to this Plan may be made which
results in a cutback of vested rights or rights to accrued benefits by Code
Section 411(a)(10)(A) or Code Section 411(d)(6). If the vesting schedule, if
any, in this Plan is amended, each Participant with at least 3 Years of Service
may elect to have his accrued benefit determined by the vesting schedule in
effect prior to the amendment.

17.     Termination of Contributions.

TOM BROWN, INC. establishes this Plan intending and expecting to make its
contributions. If TOM BROWN, INC. decides it is impossible or inadvisable to
continue to make its contributions, TOM BROWN, INC. has the right to terminate
its contributions.

If there is a complete termination of contributions by TOM BROWN, INC., with or
without formal action by TOM BROWN, INC., this Plan remains in force until
terminated. Any provision requiring forfeiture of a Participating Employee's
share (the shares of each Participating Employee become fully vested in such
Participant, regardless of the length of his employment or his participation, on
such termination of contributions); and all of the assets in this Plan on the
date specified in such resolutions shall be held, administered by the Committee
and distributed by the Trustee as provided herein.

18.     Merger or Consolidation of Plan, Transfer of Plan Assets.

If this Plan is merged or consolidated with, or its assets and liabilities
transferred to any other plan, each Participant and Beneficiary in this Plan is
entitled, after the merger, 

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TOM BROWN, INC. 401(k) Retirement Plan                             Page 36 of 41
   37

consolidation or transfer, to a benefit equal to or greater than the benefit to
which he would have been entitled by this Plan, immediately prior to such
merger, consolidation or transfer, as if the Plan had terminated at such time.

19.     Top-Heavy Provisions.

        19.1 Determination of Top-Heavy Status. As of each determination date,
        the Committee computes the aggregate amounts allocated to the accounts
        of all "key employees" of TOM BROWN, INC..

        The term "key employee" is any Employee, former Employee, or beneficiary
        thereof who, at any time during the Plan Year or any of the 4 preceding
        Plan Years, is or was (i) an officer of TOM BROWN, INC. with an annual
        Compensation greater than 50% of the dollar limitation then in effect in
        Code Section 415(b)(1)(A), (ii) 1 of the 10 Employees having an annual
        Compensation greater than the dollar limitation then in effect in Code
        Section 415(c)(1)(A) and owning (or considered as owning in Code Section
        318) the largest interests in TOM BROWN, INC., (iii) a 5% owner of TOM
        BROWN, INC. or (iv) a 1% owner of TOM BROWN, INC. with annual
        Compensation from TOM BROWN, INC. in excess of $150,000. To determine
        percentage ownership in the foregoing sentence, Code Section
        416(i)(1)(B) applies and Code Sections 414(b), 414(c), and Sec. 414(m)
        do not apply.

        If the aggregate amount allocated to the accounts of all key employees
        exceeds 60% of the aggregate amount allocated to the accounts of all
        Participants, this Plan is deemed to be top-heavy for the Plan Year next
        following such Anniversary Date (and for the initial Plan Year, for the
        Plan Year ending with such Anniversary Date). To determine the aggregate
        amounts allocated to the accounts of Participants, there is added any
        amount of TOM BROWN, INC. contributions required for the Plan Year
        ending on the determination date (unless this Plan is not subject to the
        minimum funding in Code Section 412). The present value of accrued
        benefits is determined by the interest and mortality rates specified in
        the defined benefit plan. The account balances attributable to a
        Participant who has not performed any services for TOM BROWN, INC. at
        any time during the five-year period ending on any determination date
        are disregarded. To make the above determination, (i) all other
        qualified plans of TOM BROWN, INC. in which a key employee is a
        participant, (ii) all other plans which enable this Plan or plans
        described in (i) above to meet the requirements of Code Section
        401(a)(4) or Code Section 410, and (iii) all other qualified plans which
        may have been terminated but which were maintained by the Employer
        within the five-year period ending on the determination date. There
        shall also be considered any distributions made to any Participant
        within a five-year period ending on the determination date.

        At the option of the Committee, any other qualified plans maintained by
        TOM BROWN, INC. may be included in the group of plans to determine the
        top-heavy status of this Plan, if the group of plans continues to meet
        the requirements of Code Section 401(a)(4) and Code Section 410 with
        such plans as are added at the option of TOM BROWN, INC. being taken
        into account. If any plans of TOM BROWN, INC. are 


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 37 of 41
   38

        aggregated with this Plan as described in the preceding sentence, this
        Plan is deemed to be top-heavy only if the aggregate present value of
        accrued benefits of key employees in the aggregated group of plans
        exceeds 60% of the aggregate present value of accrued benefits of all
        employees in the aggregated group of plans. To determine present value
        of accrued benefits, the rules of Code Section 416(g) apply. Accrued
        benefits are determined by the method used for accrual purposes for all
        plans of TOM BROWN, INC., or if there is no such method, by the slowest
        accrual rate permitted by Code Section 411(b)(1)(C). The determination
        date is the last day of the preceding Plan Year. However, for the first
        Plan Year the determination date is the last day of that year.

        To determine whether or not an Employee is a key employee,
        "Compensation" is compensation in Code Section 415(c)(3), but including
        Salary Reduction Contributions to this Plan.

        19.2 Minimum Allocations. For each Plan Year that this Plan is
        top-heavy, there shall be allocated to the account of each Participant
        who is not a key employee and who is employed by TOM BROWN, INC. on the
        last day of the Plan Year, irrespective of whether he has completed
        1,000 Hours of Service with TOM BROWN, INC. during the Plan Year, an
        amount not less than 3% of each such Participant's W-2 Compensation
        (without taking into account Social Security and similar contributions
        and benefits). If the TOM BROWN, INC. contribution for any Plan Year
        (including Salary Reduction Contributions) is less than 3% of the W-2
        Compensation of the key employee for whom such contribution percentage
        is the highest, the amount allocable to each nonkey employee shall be
        such lesser percentage. If TOM BROWN, INC. maintains both a defined
        contribution plan and a defined benefit plan with a nonkey employee who
        participates, or could participate in both plans, there is allocated to
        the account of each Participant who otherwise would be entitled to
        receive a minimum allocation as described above an amount not less than
        5% of such Participant's W-2 Compensation (but without taking into
        account Social Security and similar contributions and benefits). For
        this subsection, all defined contribution plans of TOM BROWN, INC. are
        aggregated to satisfy the percentage rules if the aggregate contribution
        made to all defined contribution plans equals 5% of any nonkey
        Participant's W-2 Compensation.

        19.3 Effect on Code Section 415 Limitations. If TOM BROWN, INC.
        maintains both a defined contribution plan and a defined benefit plan
        with a Participant who participates, or could participate, in both
        plans, for computing the defined contribution fraction and defined
        benefit fraction described in subparagraph 8.J. hereunder, the dollar
        limitation of Code Section 415(b)(1)(A) and Code Section 415(c)(1)(A)
        are multiplied by 1.0 in lieu of 1.25, unless:

               A.     the defined contribution plan allocates to the account of
               each Participant who is not a key employee not less than 7-1/2%
               of each such Participant's W-2 Compensation (without taking into
               account Social Security and similar contributions and benefits);
               and


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 38 of 41
   39


               B.     the plan would not be top-heavy if 90% were substituted 
               for 60% in subparagraph A. above.

20.     Expenses of Administration.

The Trustee's compensation is fixed by agreement with TOM BROWN, INC.; however,
no person compensated as an Employee of TOM BROWN, INC. shall be compensated as
Trustee. TOM BROWN, INC. intends to pay, in addition to the contributions
provided for, any expenses of administering the Trust, including the Trustee's
compensation, if any, except that any investment counsel fees incurred by the
Trust, and any expenses directly related to particular transactions involving
purchases or sales of property by the Trust or the production or collection of
income, such as transfer taxes, brokers' commissions, etc., are paid by the
Trustee from the assets of the Trust.

21.     Rights of Participants.

Participating in this Plan and Trust does not give any Participant any right to
be retained in the service of TOM BROWN, INC. or any right or claim to any
benefits unless such benefits accrue by this Plan.

22.     Claims Procedure.

Claims for benefits by this Plan may be filed with the Committee on forms
supplied by it. Written notice of the disposition of a claim is furnished to the
claimant within 90 days after the application is filed. If the claim is denied,
the reasons for the denial are specifically set forth in the notice in language
calculated to be understood by the claimant, pertinent provisions of the Plan
are cited, and, where appropriate, an explanation as to how the claimant can
perfect the claim is provided. In addition, the claimant is furnished an
explanation of this Plan's claims review procedure, as described below.

Any Employee or Beneficiary denied a benefit is entitled to request the
Committee to give further consideration to his claim by filing with the
Committee (on a form which may be obtained from the Committee) a request for a
hearing. Such request, together with a written statement of the reasons why the
claimant believes his claim should be allowed, shall be filed with the Committee
no later than 60 days after receipt of the written notification furnished by the
Committee for the claim. The Committee shall conduct a hearing within the next
60 days, at which the claimant may be represented by an attorney or any other
representative of his choosing and at which the claimant has an opportunity to
submit written and oral evidence and arguments in support of his claim. At the
hearing (or prior thereto upon 5 business days written notice to the Committee)
the claimant or his representative has an opportunity to review all documents in
the possession of the Committee pertinent to the claim at issue and its
disallowance.

Either the claimant or the Committee may have a court reporter attend the
hearing and record the proceedings. A complete written transcript of the
proceedings shall be furnished to both parties by the court reporter. The full
expense of any such court reporter and such transcripts are borne by the party
causing the court reporter to attend the hearing.


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 39 of 41
   40


A final decision as to the allowance of the claim shall be made by the Committee
within 60 days of receipt of the appeal (unless there is an extension of 60 days
due to special circumstances, if the delay and the special circumstances
occasioning it are communicated to the claimant within the 60 day period). Such
communication shall be written in a manner calculated to be understood by the
claimant and shall include specific reasons for the decision and specific
references to the pertinent Plan provisions.

23.     Construction.

This Plan shall be construed so as to qualify as a tax-free employees'
profit-sharing plan, contributions to which by TOM BROWN, INC. are deductible
from its taxable income.

24.     Defense of Plan.

TOM BROWN, INC. has the right to defend the position of this Plan as a qualified
profit-sharing plan, in Code Section 401(a).

25.     Governing Law.

This Plan is executed and delivered in the State of Texas and is to be construed
and regulated by the laws of the State of Texas.

26.     Mistaken Contributions, Etc.

The assets of this Plan shall not inure to the benefit of TOM BROWN, INC., and
shall be held for the exclusive purposes of providing benefits to Participants
and Beneficiaries and defraying reasonable expenses of administering the Plan.

Notwithstanding the foregoing sentence:

               A.     If a contribution is made by TOM BROWN, INC. by a mistake 
               of fact, such contribution may be returned, at the discretion of 
               TOM BROWN, INC., within 1 year after payment of such 
               contribution.

               B.     All contributions to this Plan are conditioned on initial
               qualification of this Plan by Code Section 401. If this Plan does
               not so qualify for any Plan Year for which a contribution is
               made, such contribution may be returned, at the discretion of TOM
               BROWN, INC., within 1 year after the date of denial of initial
               qualification of this Plan if the application for qualification
               is made by the time prescribed by law for filing the Employer's
               tax return for the taxable year this Plan is adopted, or such
               later date as the Secretary of the Treasury may prescribe.

               C.     All contributions to this Plan are conditioned upon their
               deductibility, for Federal income tax purposes, by Code Section
               404. If and to the extent that such deduction is disallowed, TOM
               BROWN, INC.'S contribution (to the extent disallowed) may be
               returned, at the discretion of TOM BROWN, INC., 


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TOM BROWN, INC. 401(k) Retirement Plan                             Page 40 of 41
   41

               within 1 year after the disallowance of the deduction.

        Earnings on such TOM BROWN, INC. contributions are not returned to TOM
        BROWN, INC., but losses on such contributions reduce the amount to be
        returned. Notwithstanding the foregoing, if this Plan does not initially
        qualify by Code Section 401, the entire assets of this Plan may be
        returned to TOM BROWN, INC..

27.     Plan Administrator; Legal Agent.

The Committee serves as the Plan Administrator and is the legal agent for
service of process on this Plan, to be served at the following address:

        TOM BROWN, INC. 401(k) Retirement Plan Committee
        c/o TOM BROWN, INC.
        508 West Wall, Suite 500
        Midland, Texas 79702

This Plan is executed by TOM BROWN, INC. on February , 2000, effective as of
January 1, 2000.

                                            TOM BROWN, INC.



                                            By: ____________________________
                                                  B. JACK REED, Vice-President  
                                                  Human Relations







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TOM BROWN, INC. 401(k) Retirement Plan                             Page 41 of 41


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