Document:

FOURTH AMENDMENT TO THE
                      MORRISON MANAGEMENT SPECIALISTS, INC.

                              SALARY DEFERRAL PLAN

     THIS FOURTH AMENDMENT is made as of this 29th day of June, 2000 by MORRISON
MANAGEMENT  SPECIALISTS,  INC., a corporation  duly organized and existing under
the laws of the state of Georgia (the "Primary Sponsor").

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

     WHEREAS,  the Primary  Sponsor  maintains  the Morrison  Health Care,  Inc.
Salary Deferral Plan (the "Plan") under an indenture dated March 7, 1996; and

     WHEREAS,  to  reflect  the  change in the name of the  Primary  Sponsor  to
Morrison Management Specialists, Inc., the Primary Sponsor desires to change the
name of the Plan to the "Morrison Management  Specialists,  Inc. Salary Deferral
Plan."

         WHEREAS,  the  Primary  Sponsor  wishes  to amend  the Plan to  reflect
certain changes under the Uniformed Services  Employment and Reemployment Rights
Act, the Small Business Job  Protection Act of 1996 and the Taxpayer  Relief Act
of 1997; and

         WHEREAS,  the Primary  Sponsor  wishes to amend the Plan to reflect the
preservation  of  certain  protected  benefits  within  the  meaning  of Section
411(d)(6) of the Internal  Revenue  Code  resulting  from the transfer of assets
from the Charlotte-Mecklenburg Hospital Authority 401(k) Matched Savings Plan.

         NOW, THEREFORE, the Plan is hereby amended,  effective as of January 1,
1997, except as otherwise provided herein, as follows:

         1.       Effective  January 1, 2000, by  deleting Section 1.1(c) in its
entirety and by substituting therefor the following:

                  "(c)  `Employee   Deferred  Account'  which  shall  reflect  a
         Member's  interest in  contributions  made by a Plan Sponsor under Plan
         Section 3.1 and a Member's  interest,  if any, in his  Deferred  Income
         Account under the CHS Plan which has been  transferred to the Plan in a
         trust-to-trust transfer."

         2.       Effective January 1, 2000, by deleting Section 1.1(f) in its
entirety and by substituting therefor the following:

                  "(f)  `Rollover   Account'  which  shall  reflect  a  Member's
         interest in Rollover  Amounts and a Member's  interest,  if any, in his
         Rollover  Account under the CHS Plan which has been  transferred to the
         Plan in a trust-to-trust transfer."

         3.       Effective January 1, 2000, by adding the following new Section
1.1(l)A as follows:

                  "(l)A  `Discretionary  Profit  Sharing  Contribution  Account'
         which shall reflect a Member's interest in discretionary profit sharing
         contributions  made by a Plan  Sponsor  under Plan  Section  3.4C and a
         Member's interest, if any, in his Employer Discretionary  Contributions
         Account  under  the  Charlotte-Mecklenburg  Hospital  Authority  401(k)
         Matched Savings Plan (the `CHS Plan') which has been transferred to the
         Plan in a trust-to-trust transfer."

         4.       Effective January 1, 2000, by adding the following new Section
1.1(m) as follows:

                  "(m) `CHS Matching Employer Contributions Account' which shall
         reflect  a  Member's  interest,   if  any,  in  his  Matching  Employer
         Contributions  Account,  if any,  under  the CHS  Plan  which  has been
         transferred to the Plan in a trust-to-trust transfer."

         5.       Effective January 1, 1998, by deleting existing  Plan  Section
1.5 in its entirety and by substituting the following:

                  "1.5 `Annual  Compensation'  means wages within the meaning of
         Code Section  3401(a) (for  purposes of income tax  withholding  at the
         source) paid to an Employee by a Plan Sponsor and  Affiliates  during a
         Plan Year (but without regard to any rules that limit the  remuneration
         included in wages based on the nature or location of the  employment or
         the services performed, such as the exception for agricultural labor in
         Code  Section  3401(a)(2)),  to the  extent not in excess of the Annual
         Compensation  Limit for all purposes under the Plan except for purposes
         of determining who are Highly  Compensated  Employees.  Notwithstanding
         the above, Annual Compensation shall be determined as follows:

                    (a) (1) for  purposes of  determining,  with respect to each
                    Plan  Sponsor,  the  amount of  contributions  made by or on
                    behalf of an Employee  under Plan Section 3 and  allocations
                    under Plan Section 4, and

                        (2) for   purposes  of   applying  the   provisions   of
                    Appendix A hereto for such Plan Years  as the  Secretary of
                    the Treasury  may  allow,  Annual  Compensation  shall  only
                    include amounts  received  for the portion of the Plan  Year
                    during  which the Employee was a Member; and

                    (b) for all  purposes  under the Plan,  Annual  Compensation
               shall include any amount which would have been paid during a Plan
               Year,  but was  contributed  by a Plan  Sponsor  on  behalf of an
               Employee  pursuant to a salary  reduction  agreement which is not
               includable in the gross income of the Employee under Section 125,
               402(g)(3), or 457 of the Code."

         6.       Effective January 1, 2000, by adding the following new Section
1.9A as follows:

                  "1.9A  `CHS  Facility'  means any  facility  or  location,  or
         successor  thereto,  previously  operated by the  Charlotte-Mecklenburg
         Hospital Authority."

         7.       By deleting Section 1.19  in its entirety and by  substituting
therefor the following:

                  "1.19 `Eligible Employee' means any Employee of a Plan Sponsor
         other than an Employee  who is (a) an Employee  covered by a collective
         bargaining agreement between a union and a Plan Sponsor,  provided that
         retirement  benefits were the subject of good faith bargaining,  unless
         the bargaining agreement provides for participation in the Plan; or (b)
         a leased  employee  within the meaning of Code  Section  414(n)(2),  or
         deemed to be an Employee  of a Plan  Sponsor  pursuant  to  regulations
         under Code Section 414(o). Notwithstanding the foregoing, no person who
         is initially classified by a Plan Sponsor as an independent  contractor
         for  federal  income tax  purposes  shall be  regarded  as an  Eligible
         Employee for that period,  regardless of any  subsequent  determination
         that any such  person  should have been  characterized  as a common law
         employee of the Plan Sponsor for the period in question."

         8.       Effective  January 1, 2000, by  deleting Section  1.21 in  its
entirety and by substituting therefore the following:

                  "1.21 `Eligible Rollover  Distribution' means any distribution
         of all or any  portion of the  Distributee's  Account,  except  that 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 a
         specified  period of ten years or more; any  distribution to the extent
         such distribution is required under Code Section 401(a)(9); the portion
         of any distribution that is not includable in gross income  (determined
         without  regard to the exclusion for net unrealized  appreciation  with
         respect to employer securities);  and any distribution  contemplated by
         Code Section 401(k)(2)(B)(i)(IV)."

         9.       By  deleting  existing Plan  Section 1.31 in its  entirety and
substituting therefor the following:

                  "1.31 `Highly  Compensated  Employee' means, with respect to a
         Plan Year, each Employee who:

                           (a)  was at any  time  during  the  Plan  Year or the
                  immediately  preceding  Plan  Year an owner of more  than five
                  percent  (5%) of the  outstanding  stock of a Plan  Sponsor or
                  Affiliate or more than five percent (5%) of the total combined
                  voting power of all stock of a Plan Sponsor or Affiliate; or

                           (b) received Annual Compensation in excess of $85,000
                  during  the  immediately  preceding  Plan  Year  ($80,000  for
                  preceding Plan Years  beginning on or before January 1, 1999),
                  which  amount  shall be  adjusted  for  changes in the cost of
                  living as provided in  regulations  issued by the Secretary of
                  the Treasury.

                           (c) is a former Employee who met the  requirements of
                  Subsection  (a)  or  (b)  at  the  time  the  former  Employee
                  separated  from  service with the Plan Sponsor or an Affiliate
                  or at any time after the former Employee attained age 55."

         10.      By deleting existing Plan Section 1.37(c) in its entirety  and
by substituting therefor the following:  "[Reserved.]"

         11.      Effective  January 1, 2000, by deleting  Section  1.44 in  its
entirety and by substituting the following:

                  "1.44  `Profit  Sharing  Plan'  means the  portion of the Plan
         pertaining  to  Discretionary  Profit  Sharing  Contribution  Accounts,
         Employee   Deferred   Accounts,    Voluntary   Contribution   Accounts,
         Pre-Spinoff Matching Accounts,  Diversification  Accounts, CHS Matching
         Employer Contributions Accounts, and Rollover Accounts."

         12.      Effective January 1, 2000, by adding the following new Section
3.4C as follows:

                  "3.4C  Discretionary  Profit Sharing  Contributions.  The Plan
         Sponsor proposes to make contributions to the Fund with respect to each
         Plan Year on behalf of each Member who is an Eligible Employee entitled
         to an allocation under Plan Section 4.1A in an amount determined by the
         Plan Sponsor."

         13.      Effective January 1, 2000, by  deleting  Section  3.6  in  its
entirety and by substituting therefor the following:

                  "3.6 In no event  will  the sum of  contributions  under  Plan
         Sections 3.1, 3.2, 3.4A,  3.4B,  and 3.4C exceed the deductible  limits
         under Code Section 404."

         14.      Effective January 1, 2000, by adding the following new Section
4.1A as follows:

                  "4.1A Discretionary Profit Sharing  Contributions.  As soon as
         reasonably  practicable  following  the date of receipt by the Trustee,
         Plan  Sponsor  contributions  made  pursuant  to Section  3.4C shall be
         allocated to the Discretionary  Profit Sharing  Contribution Account of
         each Member who is  employed  by a Plan  Sponsor on the last day of the
         Plan  Year  at a CHS  Facility  in the  proportion  that  the  Member's
         Compensation  bears to the Annual  Compensation of all Members entitled
         to an allocation under this Plan Section 4.1A."

         15.      By deleting Sections 4.4(b) and (c) in their entirety  and  by
substituting the following:

                  "(b) Any shares of Company  Stock which are released  from the
         Loan  Suspense  Account  that  are  attributable  (1) to  Plan  Sponsor
         contributions  under  Plan  Section  3.3 and  forfeitures;  (2) to cash
         dividends  paid on  shares  of  Company  Stock  allocated  to the  Loan
         Suspense  Account  that are used to make a  payment  on an  Acquisition
         Loan;  and (3) to proceeds on the sale of shares of Company  Stock held
         in the Loan  Suspense  Account  that are used to make a  payment  on an
         Acquisition  Loan shall be  allocated to Company  Matching  Accounts in
         accordance with Plan Section 4.2(a).  Proceeds on the sale of shares of
         Company Stock held in the Loan Suspense Account may be used to repay an
         Acquisition Loan if the transaction, based on all the surrounding facts
         and circumstances,  satisfies the requirements of Treasury  Regulations
         Section 54.4975-7(b)(3).

                  (c) To the extent the  proceeds  on the sale of Company  Stock
         held in the Loan Suspense  Account exceed the amount of the Acquisition
         Loan, such proceeds shall be treated as earnings and shall be allocated
         to each Member's  Supplemental  Matching Account in the proportion that
         the  balance  of  the  Member's  Accounts  under  the  ESOP  as of  the
         immediately  preceding  Valuation  Date bears to the total value of all
         Members'  Accounts  under  the  ESOP  as of the  immediately  preceding
         Valuation Date."

         16.      By deleting Section 4.4(e) in its entirety.

         17.      Effective January 1, 2000, by adding the following new Section
6.3A as follows:

                  "6.3A  Subject  to  the  rules  and  conditions  as  the  Plan
         Administrator may prescribe,  by request, a Member who has attained the
         age of 59 1/2 may elect to withdrawal  all or any portion of his vested
         Account."

         18.      By deleting Section 6.4 in its entirety and by substituting
therefor the following:

                  "6.4 Any  distribution  pursuant to this Plan  Section,  other
         than a distribution  on account of a hardship,  shall be made in a lump
         sum to the  Member  and  shall  be  subject  to the  Eligible  Rollover
         Distribution requirements set forth in Plan Section 11.2."

         19.      Effective  January 1, 2000,  by  deleting Section  8.4  in its
entirety and by substituting therefor the following:

                  "8.4 Payment of the Member's  Accrued Benefit shall be made as
         soon  as   administratively   feasible  after  the  Member   terminates
         employment,  but in no event  later than,  unless the Member  otherwise
         elects,  the 60th day after the latest of the close of the Plan Year in
         which  the  Member  terminates  his  service  with  the  Plan  Sponsor;
         provided,  however,  if the Member's  Accrued Benefit exceeds $5,000 it
         will not be distributed before the Member's `required  beginning date,'
         within the  meaning  of Plan  Section  11.3(c),  without  the  Member's
         consent."

         20.      Effective January 1, 2000, by  deleting  Section  9.3  in  its
entirety and by substituting therefor the following:

                  "9.3 Payment of the Member's  Accrued Benefit shall be made as
         soon  as   administratively   feasible  after  the  Member   terminates
         employment,  but in no event  later than,  unless the Member  otherwise
         elects,  the 60th day after the latest of the close of the Plan Year in
         which  the  Member  terminates  his  service  with  the  Plan  Sponsor;
         provided,  however,  if the Member's  Accrued Benefit exceeds $5,000 it
         will not be distributed before the Member's `required  beginning date,'
         within the  meaning  of Plan  Section  11.3(c),  without  the  Member's
         consent."

         21.      Effective January 1, 2001, by deleting  Section 11.3(c) in its
entirety and by substituting therefor the following:

                  "(c)  For  purposes  of  this  Section,   the  term  `required
         beginning  date' means April 1 of the calendar year following the later
         of the  calendar  year in which the  Member  attains  age 70 1/2 or the
         calendar year in which the Member retires, except that in the case of a
         person  described  in Section  l(b)(3)  of  Appendix  C, the  `required
         beginning  date' shall be April 1 of the calendar  year  following  the
         calendar year in which the Member  attains age 70 1/2.  Notwithstanding
         the foregoing, with respect to a Member who attains age 70 1/2 prior to
         January 1, 2001,  such  Member  may elect to receive  minimum  required
         distributions  in accordance with Section  401(a)(9) as in effect prior
         to January 1, 1997,  or, in the  alternative,  such Member may elect to
         defer distribution,  in which event benefits will be paid in accordance
         with the remaining provisions of the Plan."

         22.      By deleting the first sentence of Section 22.1 in its entirety
and by substituting therefor the following:

         "Subject to the provisions of the Plan and the Trust,  on and after the
         date the  provisions of this Section are  activated by express  written
         action of the Plan Administrator,  each Member who is an Employee shall
         have the right, subject to prior approval by the Plan Administrator, to
         borrow from the Fund."

         23.      By adding a new final sentence to Section 22.1 as follows:

         "In  addition,  any  loan  made to a  Member  under  the CHS  Plan  and
         transferred to the Plan shall be governed and  administered by the Plan
         Administrator in accordance with the terms of the notes evidencing such
         loans and shall be subject to the terms of the Plan and the Trust."

         24.      By deleting Section 22.7 in its entirety and  by  substituting
therefor the following:

                  "22.7 Each loan, by its terms, shall be repaid within five (5)
         years;  except that the Plan  Administrator  by uniform rule, may allow
         any loan  which is used to acquire  any  dwelling  unit which  within a
         reasonable time is to be used (determined at the time the loan is made)
         as the principal residence of the borrower,  by its terms, to be repaid
         within a longer period of time."

         25.      By deleting Appendix A in its entirety and by substituting the
following:

                                   "APPENDIX A

                         SPECIAL NONDISCRIMINATION RULES

                                    SECTION 1

                  As used in this Appendix,  the following  words shall have the
         following meanings:

                           (a)      `Eligible Member' means  a Member who  is an
                  Employee during any particular Plan Year.

                           (b)      `Highly Compensated  Eligible  Member' means
                  any  Eligible Member  who  is  a  Highly Compensated Employee.

                           (c) `Matching  Contribution'  means any  contribution
                  made by a Plan  Sponsor  to a Matching  Account  and any other
                  contribution  made to a plan by a Plan Sponsor or an Affiliate
                  on behalf of an Employee on account of a contribution  made by
                  an Employee or on account of an Elective Deferral.

                           (d) `Qualified Matching Contributions' means Matching
                  Contributions which are immediately  nonforfeitable when made,
                  and which would be  nonforfeitable,  regardless  of the age or
                  service of the Employee or whether the Employee is employed on
                  a certain date, and which may not be distributed,  except upon
                  one of the events described under Section  401(k)(2)(B) of the
                  Code and the regulations thereunder.

                           (e)  `Qualified   Nonelective   Contributions'  means
                  contributions of the Plan Sponsor or an Affiliate,  other than
                  Matching  Contributions  or  Elective  Deferrals,   which  are
                  nonforfeitable  when made,  and which would be  nonforfeitable
                  regardless  of the age or service of the  Employee  or whether
                  the Employee is employed on a certain date,  and which may not
                  be distributed,  except upon one of the events described under
                  Code Section 401(k)(2)(B) and the regulations thereunder.

                                    SECTION 2

                  In  addition to any other  limitations  set forth in the Plan,
         for each Plan Year one of the following tests must be satisfied:

                           (a) the  actual  deferral  percentage  for the Highly
                  Compensated  Eligible  Members  for the Plan  Year must not be
                  more than the actual deferral percentage of all other Eligible
                  Members for the preceding Plan Year multiplied by 1.25; or

                           (b) the excess of the actual deferral  percentage for
                  the Highly Compensated Eligible Members for the Plan Year over
                  that of all other Eligible Members for the preceding Plan Year
                  must  not be more  than  two (2)  percentage  points,  and the
                  actual deferral percentage for the Highly Compensated Eligible
                  Members  for the Plan Year  must not be more  than the  actual
                  deferral  percentage  of all other  Eligible  Members  for the
                  preceding Plan Year multiplied by two (2).

                  The `actual  deferral  percentage' for the Highly  Compensated
         Eligible  Members and all other Eligible Members for a Plan Year is the
         average in each group of the  ratios,  calculated  separately  for each
         Employee,  of the Deferral  Amounts  contributed by the Plan Sponsor on
         behalf of an Employee for the Plan Year to the Annual  Compensation  of
         the Employee in the Plan Year. In addition, for purposes of calculating
         the `actual deferral  percentage' as described above,  Deferral Amounts
         of  Employees  who are  not  Highly  Compensated  Employees  which  are
         prohibited  by  Code  Section   401(a)(30)  shall  not  be  taken  into
         consideration.  Except to the  extent  limited by  Treasury  Regulation
         section   1.401(k)-l(b)(5)   and  any  other   applicable   regulations
         promulgated  by the  Secretary  of the  Treasury,  all or  part  of the
         Qualified    Matching    Contributions   and   Qualified    Nonelective
         Contributions  made  pursuant  to the Plan may be treated  as  Deferral
         Amounts for purposes of determining the `actual deferral percentage.'

                                    SECTION 3

                  If the Deferral  Amounts  contributed  on behalf of any Highly
         Compensated  Eligible  Member  exceeds the amount  permitted  under the
         `actual  deferral  percentage'  test  described  in  Section  2 of this
         Appendix  A for any given Plan  Year,  then  before the end of the Plan
         Year following the Plan Year for which the Excess  Deferral  Amount was
         contributed, (a) the portion of the Excess Deferral Amount for the Plan
         Year  attributable  to a Highly  Compensated  Member,  as  adjusted  to
         reflect income,  gain, or loss  attributable to it through the date the
         end of the Plan Year for which the test is being  performed and reduced
         by any excess Elective Deferrals as determined pursuant to Plan Section
         3.1 previously  distributed  to a Member for the Member's  taxable year
         ending with or within the Plan Year,  may be  distributed to the Highly
         Compensated   Eligible   Member  or  (b)  to  the  extent  provided  in
         regulations  issued  by  the  Secretary  of  the  Treasury,   the  Plan
         Administrator  may permit the Member to elect,  within two and one-half
         months  after the end of the Plan Year for  which the  Excess  Deferral
         Amount was contributed, to treat the Excess Deferral Amount, unadjusted
         for  earnings,  gains,  and  losses,  but as so  reduced,  as an amount
         distributed  to  the  Member  and  then  contributed  as  an  after-tax
         contribution by the Member to the Plan (`recharacterized amounts'). The
         income  allocable to such Excess Deferral Amount shall be determined in
         a similar  manner as described  in Section 4.3 of the Plan.  The Excess
         Deferral Amount to be distributed or  recharacterized  shall be reduced
         by Deferral Amounts previously  distributed or recharacterized  for the
         taxable year ending in the same Plan Year, and shall also be reduced by
         Deferral Amounts previously distributed or recharacterized for the Plan
         Year  beginning in such taxable year.  For all other purposes under the
         Plan other than this Appendix A, recharacterized amounts shall continue
         to be treated as Deferral  Amounts.  In the event the  multiple  use of
         limitations  contained  in Sections  2(b) and 5(b) of this  Appendix A,
         pursuant to Treasury  Regulations  section 1.401(m)-2 as promulgated by
         the Secretary of the Treasury, requires a corrective distribution, such
         distribution  shall be made pursuant to this Section 3, and not Section
         6 of Appendix A. The portion of the Matching Contribution on which such
         Excess   Deferral   Amount  was  based  shall  be  forfeited  upon  the
         distribution or recharacterization,  as the case may be, of such Excess
         Deferral Amount.

                           (a) For purposes of this Section 3, `Excess  Deferral
                  Amount' means, with respect to a Plan Year, the excess of:

                                    (1)     the  aggregate  amount  of  Deferral
                           Amounts  contributed by a Plan Sponsor on  behalf  of
                           Highly Compensated  Eligible  Members  for  the  Plan
                           Year, over

                                    (2) the maximum  amount of Deferral  Amounts
                           permitted  under Section 2 of this Appendix A for the
                           Plan Year,  which shall be determined by reducing the
                           Deferral  Amounts  contributed  on  behalf  of Highly
                           Compensated  Eligible  Members in order of the actual
                           deferral  percentages  beginning  with the highest of
                           such percentages.

                           (b)  Distribution  of the Excess  Deferral Amount for
                  any Plan  Year  shall be made to Highly  Compensated  Eligible
                  Members on the basis of the dollar amount of Deferral  Amounts
                  attributable to each Highly  Compensated  Eligible Member. The
                  Plan Sponsor  shall  determine  the amount of Excess  Deferral
                  Amounts which shall be distributed to each Highly  Compensated
                  Eligible Member as follows.

                                    (1) The  Deferral  Amounts  allocated to the
                           Highly  Compensated  Eligible Member with the highest
                           dollar  amount of Deferral  Amounts for the Plan Year
                           shall be reduced by the amount required to cause that
                           Highly   Compensated   Eligible  Member's   remaining
                           Deferral Amounts for the Plan Year to be equal to the
                           dollar  amount of the Deferral  Amounts  allocated to
                           the Highly Compensated  Eligible Member with the next
                           highest  dollar  amount of  Deferral  Amounts for the
                           Plan Year.  This  amount is then  distributed  to the
                           Highly  Compensated  Eligible Member with the highest
                           dollar amount of Deferral  Amounts,  unless a smaller
                           reduction,  when  added to the  total  dollar  amount
                           already  distributed  pursuant to this Paragraph (1),
                           equals the total Excess Deferral Amounts.

                                    (2) If the total  amount  distributed  under
                           Paragraph  (1) of this  Section 3(b) is less than the
                           total  Excess  Deferral  Amounts,  the  procedure  in
                           Paragraph (1) shall be  successively  repeated  until
                           the total dollar amount  distributed  is equal to the
                           total Excess Deferral Amounts  attributable to Highly
                           Compensated Eligible Members.

                  If a distribution of the Excess Deferral Amounts  attributable
         to the Highly  Compensated  Eligible Members is made in accordance with
         Paragraphs (1) and (2) of this Section, the limitations in Section 2 of
         this Appendix A shall be treated as being met regardless of whether the
         actual deferral  percentage,  if recalculated after such distributions,
         would have satisfied the requirements of Section 2.

                                    SECTION 4

                  The  Plan  Administrator  shall  have  the  responsibility  of
         monitoring the Plan's  compliance with the limitations of this Appendix
         A and  shall  have the power to take all  steps it deems  necessary  or
         appropriate  to  ensure  compliance,   including,  without  limitation,
         restricting the amount which Highly  Compensated  Eligible  Members can
         elect to have  contributed  pursuant to Plan  Section  3.1. Any actions
         taken by the Plan  Administrator  pursuant  to this  Section 4 shall be
         pursuant to non-discriminatory procedures consistently applied.

                                    SECTION 5

                  In  addition to any other  limitations  set forth in the Plan,
         Matching  Contributions  under the Plan and the amount of nondeductible
         employee  contributions under the Plan, for each Plan Year must satisfy
         one of the following tests:

                           (a)   The   contribution    percentage   for   Highly
                  Compensated Eligible Members for the Plan Year must not exceed
                  125% of the  contribution  percentage  for all other  Eligible
                  Members for the preceding Plan Year; or

                           (b)   The   contribution    percentage   for   Highly
                  Compensated Eligible Members for the Plan Year must not exceed
                  the lesser of (1) 200% of the contribution  percentage for all
                  other  Eligible  Members for the preceding  Plan Year, and (2)
                  the contribution percentage for all other Eligible Members for
                  the preceding Plan Year plus two (2) percentage points.

                  Notwithstanding the foregoing, for purposes of this Section 5,
         the terms Highly Compensated  Eligible Member and Eligible Member shall
         not  include  any  Member  who is not  eligible  to  receive a Matching
         Contribution  under the provisions of the Plan,  other than as a result
         of the Member  failing to  contribute to the Plan or failing to have an
         Elective  Deferral  contributed  to the  Plan on the  Member's  behalf.
         Notwithstanding the foregoing,  if Qualified Matching Contributions are
         taken into  account  for  purposes of applying  the test  contained  in
         Section 2 of this  Appendix  A, they  shall not be taken  into  account
         under  this  Section  5.  In  applying   the  above  tests,   the  Plan
         Administrator  shall  comply with any  regulations  promulgated  by the
         Secretary of the Treasury which prevent or restrict the use of the test
         contained in Section 2(b) of this Appendix A and the test  contained in
         Section  5(b) of this  Appendix A. The  `contribution  percentage'  for
         Highly Compensated  Eligible Members and for all other Eligible Members
         for a  Plan  Year  shall  be the  average  of  the  ratios,  calculated
         separately  for each Member,  of (A) to (B), where (A) is the amount of
         Matching  Contributions  under the Plan (excluding  Qualified  Matching
         Contributions  which are used to apply the test set forth in  Section 2
         of this Appendix A or Matching  Contributions which are used to satisfy
         the minimum required  contributions to the Accounts of Eligible Members
         who are not Key  Employees  pursuant  to Section 1 of Appendix C to the
         Plan) and nondeductible  employee contributions made under the Plan for
         the  Eligible  Member  for the Plan  Year,  and where (B) is the Annual
         Compensation  of the Eligible  Member for the Plan Year.  Except to the
         extent limited by Treasury Regulation Section  1.401(m)-l(b)(5) and any
         other  applicable  regulations  promulgated  by  the  Secretary  of the
         Treasury,  a Plan  Sponsor  may  elect to treat  Deferral  Amounts  and
         Qualified  Nonelective  Contributions  as  Matching  Contributions  for
         purpose of  determining  the  `contribution  percentage,'  provided the
         Deferral  Amounts,  excluding those treated as Matching  Contributions,
         satisfy the test set forth in Section 2 of Appendix A.

                                    SECTION 6

                  If either (a) the  Matching  Contributions  and, if taken into
         account  under  Section 5 of this  Appendix  A, the  Deferral  Amounts,
         Qualified   Nonelective   Contributions   and/or   Qualified   Matching
         Contributions made on behalf of Highly Compensated Eligible Members, or
         (b) the nondeductible employee contributions made by Highly Compensated
         Eligible  Members exceed the amount  permitted under the  `contribution
         percentage test' for any given Plan Year, then, before the close of the
         Plan  Year  following  the Plan Year for  which  the  Excess  Aggregate
         Contributions   were  made,   the   amount  of  the  Excess   Aggregate
         Contributions  attributable  to the Plan for the Plan Year under either
         Section  (6)(a)(1) or (2), or both,  as adjusted to reflect any income,
         gain or loss  attributable to such  contributions  through the date the
         Excess Aggregate Contributions are distributed shall be distributed or,
         if the Excess Aggregate Contributions are forfeitable,  forfeited.  The
         income allocable to such contributions shall be determined in a similar
         manner  as  described  in  Section  4.3 of the Plan.  As to any  Highly
         Compensated  Employee,  any distribution or forfeiture of his allocable
         portion of the  Excess  Aggregate  Contributions  for a Plan Year shall
         first be attributed to any nondeductible employee contributions made by
         the Member during the Plan Year for which no corresponding Plan Sponsor
         contribution is made and then to any remaining  nondeductible  employee
         contributions  made by the Member during the Plan Year and any Matching
         Contributions  thereon. As between the Plan and any other plan or plans
         maintained by the Plan Sponsor in which Excess Aggregate  Contributions
         for a Plan Year are held, each such plan shall  distribute or forfeit a
         pro-rata  share of each class of  contribution  based on the respective
         amounts of a class of  contribution  made to each plan  during the Plan
         Year. The payment of the Excess Aggregate  Contributions  shall be made
         without  regard to any other  provision  in the Plan.  In the event the
         multiple use of limitations contained in Sections 2(b) and 5(b) of this
         Appendix A,  pursuant  to Treasury  Regulation  section  1.401(m)-2  as
         promulgated  by the  Secretary of the  Treasury,  requires a corrective
         distribution,  such distribution shall be made pursuant to Section 3 of
         Appendix A, and not this Section 6.

                  For purposes of this Section 6, with respect to any Plan Year,
         `Excess Aggregate Contributions' means the excess of:

                           (a)   the   aggregate    amount   of   the   Matching
                  Contributions and nondeductible  employee  contributions  (and
                  any Qualified Nonelective  Contributions or Qualified Matching
                  Contributions)  and, it taken into account  under Section 5 of
                  this Appendix A, the Deferral  Amounts actually made on behalf
                  of Highly Compensated Eligible Members for the Plan Year, over

                           (b) the  maximum  amount of  contributions  permitted
                  under  the  limitations  of  Section  5 of  this  Appendix  A,
                  determined by reducing  contributions made on behalf of Highly
                  Compensated  Eligible  Members in order of their  contribution
                  percentages beginning with the highest of such percentages.

                           The  determination  of the amount of Excess Aggregate
                  Contributions  under  this  Section 6 shall be made  after (1)
                  first determining the excess Elective  Deferrals under Section
                  3.1(b)  of the  Plan  and  (2)  then  determining  the  Excess
                  Deferral Amounts under Section 3 of this Appendix A.

                           (c)   Distribution  or  forfeiture  of  nondeductible
                  employee contributions or Matching Contributions in the amount
                  of the Excess Aggregate  Contributions for any Plan Year shall
                  be made with respect to Highly Compensated Eligible Members on
                  the  basis  of  the  dollar  amount  of the  Excess  Aggregate
                  Contributions attributable to each Highly Compensated Eligible
                  Member.  Forfeitures of Excess Aggregate Contributions may not
                  be allocated to Members whose  contributions are reduced under
                  this Section 6. The Plan Sponsor shall determine the amount of
                  Excess Aggregate  Contributions  which shall be distributed to
                  each Highly Compensated Eligible Member as follows.

                                    (1)   The   Matching    Contributions    and
                           nondeductible  contributions  allocated to the Highly
                           Compensated  Eligible  Member with the highest dollar
                           amount of such  contributions for the Plan Year shall
                           be  reduced  by the  amount  required  to cause  that
                           Highly   Compensated   Eligible  Member's   remaining
                           Matching      Contributions     and     nondeductible
                           contributions  for the  Plan  Year to be equal to the
                           dollar amount of such contributions  allocated to the
                           Highly  Compensated  Eligible  Member  with  the next
                           highest dollar amount of Matching  contributions  and
                           nondeductible  contributions  for the Plan Year. This
                           amount is then distributed to the Highly  Compensated
                           Eligible  Member  with the highest  dollar  amount of
                           Matching      Contributions     and     nondeductible
                           contributions, unless a smaller reduction, when added
                           to  the  total  dollar  amount  already   distributed
                           pursuant  to this  Subsection  (1),  equals the total
                           Excess Aggregate Contributions.

                                    (2) If the total  amount  distributed  under
                           Paragraph (1) is less than the total Excess Aggregate
                           Contributions,  the  procedure in Paragraph (1) shall
                           be repeated until the total dollar amount of Matching
                           Contributions   and    nondeductible    contributions
                           distributed  is equal to the total  Excess  Aggregate
                           Contributions   attributable  to  Highly  Compensated
                           Eligible Members.

                  If a distribution of the total Excess Aggregate  Contributions
         is made in accordance with Paragraphs (1) and (2) of this Section 6(c),
         the  limitations  in  Section 5 of this  Appendix A shall be treated as
         being met regardless of whether the actual contribution percentage,  if
         recalculated  after  such  distributions,   would  have  satisfied  the
         requirements of Section 5.

                                    SECTION 7

                  Except  to the  extent  limited  by rules  promulgated  by the
         Secretary of the Treasury, if a Highly Compensated Eligible Member is a
         participant  in any other  plan of the Plan  Sponsor  or any  Affiliate
         which  includes  Matching  Contributions,  deferrals  under  a cash  or
         deferred  arrangement pursuant to Code Section 401(k), or nondeductible
         employee  contributions,  any contributions made by or on behalf of the
         Member to the other  plan  shall be  allocated  with the same  class of
         contributions  under the Plan for purposes of  determining  the `actual
         deferral  percentage'  and  `contribution  percentage'  under the Plan;
         provided, however, contributions that are made under an `employee stock
         ownership plan' (within the meaning of Code Section  4975(e)(7))  shall
         not be  combined  with  contributions  under  any plan  which is not an
         employee  stock  ownership  plan  (within the  meaning of Code  Section
         4975(e)(7)).

                  Except  to the  extent  limited  by rules  promulgated  by the
         Secretary  of the  Treasury,  if the Plan  and any  other  plans  which
         include  Matching  Contributions,  deferrals  under a cash or  deferred
         arrangement pursuant to Code Section 401(k), or nondeductible  employee
         contributions  are  considered as one plan for purposes of Code Section
         401(a)(4) and 410(b)(1),  any contributions under the other plans shall
         be allocated  with the same class of  contributions  under the Plan for
         purposes  of  determining  the  `contribution  percentage'  and `actual
         deferral percentage' under the Plan; provided,  however,  contributions
         that are made under an  `employee  stock  ownership  plan'  (within the
         meaning  of  Code  Section  4975(e)(7))  shall  not  be  combined  with
         contributions  under any plan which is not an employee stock  ownership
         plan (within the meaning of Code Section 4975(e)(7)).

                                    SECTION 8

                  Effective January 1, 1999, notwithstanding any other provision
         in this Appendix A to the contrary, to the extent otherwise applicable,
         the  limitations  expressed  in this  Appendix  A shall not apply  with
         respect  to  those  Plan  Years  in  which  the  Plan   satisfies   the
         requirements of Code Sections 401(k)(11) and/or 401(k)(12)."

         26.      By deleting,  effective January 1, 1999, the word "preceding"
from Section 2(a) and (b) and Section 5(a) and
(b) of Appendix A.

         27.      By deleting the  existing  first  sentence  of  Section  3  of
Appendix B and substituting therefor the following:

                  "Prior  to  January  1,  2000,  in the  event  a Plan  Sponsor
         maintains   a  defined   benefit   plan  under   which  a  Member  also
         participates,  the sum of the defined  benefit  plan  fraction  and the
         defined  contribution  plan  fraction for any  limitation  year for any
         Member may not exceed 1.0."

         Except as specifically  amended  hereby,  the Plan shall remain in full
force and effect as it was prior to this Fourth Amendment.

         IN  WITNESS  WHEREOF,  the  parties  hereto  have  caused  this  Fourth
Amendment to be executed as of the day and year first above written.

                                       MORRISON MANAGEMENT SPECIALISTS, INC.

                                        By:    /s/Glenn A. Davenport
                                               Glenn A. Davenport

                                        Title: President, Chief Executive
                                               Officer and Chairman of the Board

ATTEST:/s/John E. Fountain
       John E. Fountain

Title: Vice President, General Counsel and Secretary

   [CORPORATE SEAL]<PAGE>

                                                                     Exhibit 4.1

                                MEDIAPLEX, INC.

                     AMENDED AND RESTATED 1999 STOCK PLAN

     1.   Purposes of the Plan.  The purposes of this Amended and Restated 1999
          --------------------
Stock Plan are:

          .    to attract and retain the best available personnel for positions
               of substantial responsibility,

          .    to provide additional incentive to Employees, Directors and
               Consultants, and

          .    to promote the success of the Company's business.

          Options granted under the Plan may be Incentive Stock Options or
Nonstatutory Stock Options, as determined by the Administrator at the time of
grant.  Stock Purchase Rights may also be granted under the Plan.

     2.   Definitions.  As used herein, the following definitions shall apply:
          -----------

          (a)  "Administrator" means the Board or any of its Committees as shall
                -------------
be administering the Plan, in accordance with Section 4 of the Plan.

          (b)  "Applicable Laws" means the requirements relating to the
                ---------------
administration of stock option plans under U. S. state corporate laws, U.S.
federal and state securities laws, the Code, any stock exchange or quotation
system on which the Common Stock is listed or quoted and the applicable laws of
any foreign country or jurisdiction where Options or Stock Purchase Rights are,
or will be, granted under the Plan.

          (c)  "Board" means the Board of Directors of the Company.
                -----

          (d)  "Code" means the Internal Revenue Code of 1986, as amended.
                ----

          (e)  "Committee" means a committee of Directors appointed by the Board
                ---------
in accordance with Section 4 of the Plan.

          (f)  "Common Stock" means the common stock of the Company.
                ------------

          (g)  "Company" means Mediaplex, Inc., a Delaware corporation.
                -------

          (h)  "Consultant" means any person, including an advisor, engaged by
                ----------
the Company or a Parent or Subsidiary to render services to such entity.

          (i)  "Director" means a member of the Board.
                --------
<PAGE>

          (j)  "Disability" means total and permanent disability as defined in
                ----------
Section 22(e)(3) of the Code.

          (k)  "Employee" means any person, including Officers and Directors,
                --------
employed by the Company or any Parent or Subsidiary of the Company.  A Service
Provider shall not cease to be an Employee in the case of (i) any leave of
absence approved by the Company or (ii) transfers between locations of the
Company or between the Company, its Parent, any Subsidiary, or any successor.
For purposes of Incentive Stock Options, no such leave may exceed ninety days,
unless reemployment upon expiration of such leave is guaranteed by statute or
contract.  If reemployment upon expiration of a leave of absence approved by the
Company is not so guaranteed, on the 181st day of such leave any Incentive Stock
Option held by the Optionee shall cease to be treated as an Incentive Stock
Option and shall be treated for tax purposes as a Nonstatutory Stock Option.
Neither service as a Director nor payment of a director's fee by the Company
shall be sufficient to constitute "employment" by the Company.

          (l)  "Exchange Act" means the Securities Exchange Act of 1934, as
                ------------
amended.

          (m)  "Fair Market Value" means, as of any date, the value of Common
                -----------------
Stock determined as follows:

               (i)   If the Common Stock is listed on any established stock
exchange or a national market system, including without limitation the Nasdaq
National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, its
Fair Market Value shall be the closing sales price for such stock (or the
closing bid, if no sales were reported) as quoted on such exchange or system for
the last market trading day prior to the time of determination, as reported in
The Wall Street Journal or such other source as the Administrator deems
reliable;

               (ii)  If the Common Stock is regularly quoted by a recognized
securities dealer but selling prices are not reported, the Fair Market Value of
a Share of Common Stock shall be the mean between the high bid and low asked
prices for the Common Stock on the last market trading day prior to the day of
determination, as reported in The Wall Street Journal or such other source as
the Administrator deems reliable; or

               (iii) In the absence of an established market for the Common
Stock, the Fair Market Value shall be determined in good faith by the
Administrator.

          (n)  "Incentive Stock Option" means an Option intended to qualify as
                ----------------------
an incentive stock option within the meaning of Section 422 of the Code and the
regulations promulgated thereunder.

          (o)  "Inside Director" means a Director who is an Employee.
                ---------------

          (p)  "Nonstatutory Stock Option" means an Option not intended to
                -------------------------
qualify as an Incentive Stock Option.

          (q)  "Notice of Grant" means a written or electronic notice evidencing
                ---------------
certain terms and conditions of an individual Option or Stock Purchase Right
grant.  The Notice of Grant is part of the Option Agreement.

                                                                             -2-
<PAGE>

          (r)  "Officer" means a person who is an officer of the Company within
                -------
the meaning of Section 16 of the Exchange Act and the rules and regulations
promulgated thereunder.

          (s)  "Option" means a stock option granted pursuant to the Plan.
                ------

          (t)  "Option Agreement" means an agreement between the Company and an
                ----------------
Optionee evidencing the terms and conditions of an individual Option grant.  The
Option Agreement is subject to the terms and conditions of the Plan.

          (u)  "Option Exchange Program" means a program whereby outstanding
                -----------------------
Options are surrendered in exchange for Options with a lower exercise price.

          (v)  "Optioned Stock" means the Common Stock subject to an Option or
                --------------
Stock Purchase Right.

          (w)  "Optionee" means the holder of an outstanding Option or Stock
                --------
Purchase Right granted under the Plan.

          (x)  "Outside Director" means a Director who is not an Employee.
                ----------------

          (y)  "Parent" means a "parent corporation," whether now or hereafter
                ------
existing, as defined in Section 424(e) of the Code.

          (z)  "Plan" means this Amended and Restated 1999 Stock Plan.
                ----

          (aa) "Restricted Stock" means shares of Common Stock acquired pursuant
                ----------------
to a grant of Stock Purchase Rights under Section 11 of the Plan.

          (bb) "Restricted Stock Purchase Agreement" means a written agreement
                -----------------------------------
between the Company and the Optionee evidencing the terms and restrictions
applying to stock purchased under a Stock Purchase Right.  The Restricted Stock
Purchase Agreement is subject to the terms and conditions of the Plan and the
Notice of Grant.

          (cc) "Rule 16b-3" means Rule 16b-3 of the Exchange Act or any
                ----------
successor to Rule 16b-3, as in effect when discretion is being exercised with
respect to the Plan.

          (dd) "Section 16(b) " means Section 16(b) of the Exchange Act.
                -------------

          (ee) "Service Provider" means an Employee, Director or Consultant.
                ----------------

          (ff) "Share" means a share of the Common Stock, as adjusted in
                -----
accordance with Section 14 of the Plan.

          (gg) "Stock Purchase Right" means the right to purchase Common Stock
                --------------------
pursuant to Section 11 of the Plan, as evidenced by a Notice of Grant.

          (hh) "Subsidiary" means a "subsidiary corporation", whether now or
                ----------
hereafter existing, as defined in Section 424(f) of the Code.

                                                                             -3-
<PAGE>

     3.   Stock Subject to the Plan.  Subject to the provisions of Section 14 of
          -------------------------
the Plan, the maximum aggregate number of Shares that may be optioned and sold
under the Plan is twelve million (13,400,000) Shares, plus an annual increase to
be added on the first day of the Company's fiscal year commencing in 2001 equal
to the lesser of (i) 2,500,000 Shares, (ii) 5% of the outstanding Shares of the
Company's capital stock or (iii) such lesser amount as may be determined by the
Board of Directors.  The Shares may be authorized, but unissued, or reacquired
Common Stock.

          If an Option or Stock Purchase Right expires or becomes unexercisable
without having been exercised in full, or is surrendered pursuant to an Option
Exchange Program, the unpurchased Shares which were subject thereto shall become
available for future grant or sale under the Plan (unless the Plan has
terminated); provided, however, that Shares that have actually been issued under
             --------
the Plan, whether upon exercise of an Option or Right, shall not be returned to
the Plan and shall not become available for future distribution under the Plan,
except that if Shares of Restricted Stock are repurchased by the Company at
their original purchase price, such Shares shall become available for future
grant under the Plan.

     4.   Administration of the Plan.
          --------------------------

          (a)   Procedure.
                ---------

                (i)    Multiple Administrative Bodies.  The Plan may be
                       ------------------------------
administered by different Committees with respect to different groups of Service
Providers.

                (ii)   Section 162(m).  To the extent that the Administrator
                       --------------
determines it to be desirable to qualify Options granted hereunder as
"performance-based compensation" within the meaning of Section 162(m) of the
Code, the Plan shall be administered by a Committee of two or more "outside
directors" within the meaning of Section 162(m) of the Code.

                (iii)  Rule 16b-3.  To the extent desirable to qualify
                       ----------
transactions hereunder as exempt under Rule 16b-3, the transactions contemplated
hereunder shall be structured to satisfy the requirements for exemption under
Rule 16b-3.

                (iv)   Other Administration.  Other than as provided above, the
                       --------------------
Plan shall be administered by (A) the Board or (B) a Committee, which committee
shall be constituted to satisfy Applicable Laws.

          (b)   Powers of the Administrator.  Subject to the provisions of the
                ---------------------------
Plan, and in the case of a Committee, subject to the specific duties delegated
by the Board to such Committee, the Administrator shall have the authority, in
its discretion:

                (i)    to determine the Fair Market Value;

                (ii)   to select the Service Providers to whom Options and Stock
Purchase Rights may be granted hereunder;

                (iii)  to determine the number of shares of Common Stock to be
covered by each Option and Stock Purchase Right granted hereunder;

                                                                             -4-
<PAGE>

               (iv)    to approve forms of agreement for use under the Plan;

               (v)     to determine the terms and conditions, not inconsistent
with the terms of the Plan, of any Option or Stock Purchase Right granted
hereunder. Such terms and conditions include, but are not limited to, the
exercise price, the time or times when Options or Stock Purchase Rights may be
exercised (which may be based on performance criteria), any vesting acceleration
or waiver of forfeiture restrictions, and any restriction or limitation
regarding any Option or Stock Purchase Right or the shares of Common Stock
relating thereto, based in each case on such factors as the Administrator, in
its sole discretion, shall determine;

               (vi)    to reduce the exercise price of any Option or Stock
Purchase Right to the then current Fair Market Value if the Fair Market Value of
the Common Stock covered by such Option or Stock Purchase Right shall have
declined since the date the Option or Stock Purchase Right was granted;

               (vii)   to institute an Option Exchange Program;

               (viii)  to construe and interpret the terms of the Plan and
awards granted pursuant to the Plan;

               (ix)    to prescribe, amend and rescind rules and regulations
relating to the Plan, including rules and regulations relating to sub-plans
established for the purpose of qualifying for preferred tax treatment under
foreign tax laws;

               (x)     to modify or amend each Option or Stock Purchase Right
(subject to Section 15(c) of the Plan), including the discretionary authority to
extend the post-termination exercisability period of Options longer than is
otherwise provided for in the Plan;

               (xi)    to allow Optionees to satisfy withholding tax obligations
by electing to have the Company withhold from the Shares to be issued upon
exercise of an Option or Stock Purchase Right that number of Shares having a
Fair Market Value equal to the amount required to be withheld. The Fair Market
Value of the Shares to be withheld shall be determined on the date that the
amount of tax to be withheld is to be determined. All elections by an Optionee
to have Shares withheld for this purpose shall be made in such form and under
such conditions as the Administrator may deem necessary or advisable;

               (xii)   to authorize any person to execute on behalf of the
Company any instrument required to effect the grant of an Option or Stock
Purchase Right previously granted by the Administrator;

               (xiii)  to make all other determinations deemed necessary or
advisable for administering the Plan.

          (c)  Effect of Administrator's Decision.  The Administrator's
               ----------------------------------
decisions, determinations and interpretations shall be final and binding on all
Optionees and any other holders of Options or Stock Purchase Rights.

                                                                             -5-
<PAGE>

     5.   Eligibility.  Nonstatutory Stock Options and Stock Purchase Rights may
          -----------
be granted to Service Providers.  Incentive Stock Options may be granted only to
Employees.

     6.   Limitations.
          -----------

          (a)  Each Option shall be designated in the Option Agreement as either
an Incentive Stock Option or a Nonstatutory Stock Option.  However,
notwithstanding such designation, to the extent that the aggregate Fair Market
Value of the Shares with respect to which Incentive Stock Options are
exercisable for the first time by the Optionee during any calendar year (under
all plans of the Company and any Parent or Subsidiary) exceeds $100,000, such
Options shall be treated as Nonstatutory Stock Options.  For purposes of this
Section 6(a), Incentive Stock Options shall be taken into account in the order
in which they were granted.  The Fair Market Value of the Shares shall be
determined as of the time the Option with respect to such Shares is granted.

          (b)  Neither the Plan nor any Option or Stock Purchase Right shall
confer upon an Optionee any right with respect to continuing the Optionee's
relationship as a Service Provider with the Company, nor shall they interfere in
any way with the Optionee's right or the Company's right to terminate such
relationship at any time, with or without cause.

          (c)  The following limitations shall apply to grants of Options:

               (i)    No Service Provider shall be granted, in any fiscal year
of the Company, Options to purchase more than 500,000 Shares.

               (ii)   In connection with his or her initial service, a Service
Provider may be granted Options to purchase up to an additional 500,000 Shares
which shall not count against the limit set forth in subsection (i) above.

               (iii)  The foregoing limitations shall be adjusted
proportionately in connection with any change in the Company's capitalization as
described in Section 14.

               (iv)   If an Option is cancelled in the same fiscal year of the
Company in which it was granted (other than in connection with a transaction
described in Section 14), the cancelled Option will be counted against the
limits set forth in subsections (i) and (ii) above. For this purpose, if the
exercise price of an Option is reduced, the transaction will be treated as a
cancellation of the Option and the grant of a new Option.

     7.   Term of Plan.  Subject to Section 20 of the Plan, the Plan shall
          ------------
become effective upon its adoption by the Board.  It shall continue in effect
for a term of ten (10) years unless terminated earlier under Section 16 of the
Plan.

     8.   Term of Option.  The term of each Option shall be stated in the Option
          --------------
Agreement.  In the case of an Incentive Stock Option, the term shall be ten (10)
years from the date of grant or such shorter term as may be provided in the
Option Agreement.  Moreover, in the case of an Incentive Stock Option granted to
an Optionee who, at the time the Incentive Stock Option is granted, owns stock
representing more than ten percent (10%) of the total combined voting power of
all classes of stock of the Company or any Parent or Subsidiary, the term of the
Incentive Stock

                                                                             -6-
<PAGE>

Option shall be five (5) years from the date of grant or such shorter term as
may be provided in the Option Agreement.

     9.   Option Exercise Price and Consideration.
          ---------------------------------------

          (a)  Exercise Price.  The per share exercise price for the Shares to
               --------------
be issued pursuant to exercise of an Option shall be determined by the
Administrator, subject to the following:

               (i)   In the case of an Incentive Stock Option

                     (A) granted to an Employee who, at the time the Incentive
Stock Option is granted, owns stock representing more than ten percent (10%) of
the voting power of all classes of stock of the Company or any Parent or
Subsidiary, the per Share exercise price shall be no less than 110% of the Fair
Market Value per Share on the date of grant.

                     (B) granted to any Employee other than an Employee
described in paragraph (A) immediately above, the per Share exercise price shall
be no less than 100% of the Fair Market Value per Share on the date of grant.

               (ii)  In the case of a Nonstatutory Stock Option, the per Share
exercise price shall be determined by the Administrator.  In the case of a
Nonstatutory Stock Option intended to qualify as "performance-based
compensation" within the meaning of Section 162(m) of the Code, the per Share
exercise price shall be no less than 100% of the Fair Market Value per Share on
the date of grant.

               (iii) Notwithstanding the foregoing, Options may be granted
with a per Share exercise price of less than 100% of the Fair Market Value per
Share on the date of grant pursuant to a merger or other corporate transaction.

          (b)  Waiting Period and Exercise Dates.  At the time an Option is
               ---------------------------------
granted, the Administrator shall fix the period within which the Option may be
exercised and shall determine any conditions that must be satisfied before the
Option may be exercised.

          (c)  Form of Consideration.  The Administrator shall determine the
               ---------------------
acceptable form of consideration for exercising an Option, including the method
of payment. In the case of an Incentive Stock Option, the Administrator shall
determine the acceptable form of consideration at the time of grant. Such
consideration may consist entirely of:

               (i)   cash;

               (ii)  check;

               (iii) promissory note;

               (iv)  other Shares which (A) in the case of Shares acquired upon
exercise of an option, have been owned by the Optionee for more than six months
on the date of surrender, and (B) have a Fair Market Value on the date of
surrender equal to the aggregate exercise price of the Shares as to which said
Option shall be exercised;

                                                                             -7-
<PAGE>

               (v)     consideration received by the Company under a cashless
exercise program implemented by the Company in connection with the Plan;

               (vi)    a reduction in the amount of any Company liability to
the Optionee, including any liability attributable to the Optionee's
participation in any Company-sponsored deferred compensation program or
arrangement;
               (vii)   any combination of the foregoing methods of payment; or

               (viii)  such other consideration and method of payment for the
issuance of Shares to the extent permitted by Applicable Laws.

     10.  Exercise of Option.
          ------------------

          (a)  Procedure for Exercise; Rights as a Stockholder.  Any Option
               -----------------------------------------------
granted hereunder shall be exercisable according to the terms of the Plan and at
such times and under such conditions as determined by the Administrator and set
forth in the Option Agreement.  Unless the Administrator provides otherwise,
vesting of Options granted hereunder shall be tolled during any unpaid leave of
absence.  An Option may not be exercised for a fraction of a Share.

               An Option shall be deemed exercised when the Company receives:
(i) written or electronic notice of exercise (in accordance with the Option
Agreement) from the person entitled to exercise the Option, and (ii) full
payment for the Shares with respect to which the Option is exercised. Full
payment may consist of any consideration and method of payment authorized by the
Administrator and permitted by the Option Agreement and the Plan. Shares issued
upon exercise of an Option shall be issued in the name of the Optionee or, if
requested by the Optionee, in the name of the Optionee and his or her spouse.
Until the Shares are issued (as evidenced by the appropriate entry on the books
of the Company or of a duly authorized transfer agent of the Company), no right
to vote or receive dividends or any other rights as a stockholder shall exist
with respect to the Optioned Stock, notwithstanding the exercise of the Option.
The Company shall issue (or cause to be issued) such Shares promptly after the
Option is exercised. No adjustment will be made for a dividend or other right
for which the record date is prior to the date the Shares are issued, except as
provided in Section 14 of the Plan.

               Exercising an Option in any manner shall decrease the number of
Shares thereafter available, both for purposes of the Plan and for sale under
the Option, by the number of Shares as to which the Option is exercised.

          (b)  Termination of Relationship as a Service Provider. If an Optionee
               -------------------------------------------------
ceases to be a Service Provider, other than upon the Optionee's death or
Disability, the Optionee may exercise his or her Option within such period of
time as is specified in the Option Agreement to the extent that the Option is
vested on the date of termination (but in no event later than the expiration of
the term of such Option as set forth in the Option Agreement). In the absence of
a specified time in the Option Agreement, the Option shall remain exercisable
for three (3) months following the Optionee's termination. If, on the date of
termination, the Optionee is not vested as to his or her entire Option, the
Shares covered by the unvested portion of the Option shall revert to the Plan.
If, after termination, the Optionee does not exercise his or her Option within
the time specified by the

                                                                             -8-
<PAGE>

Administrator, the Option shall terminate, and the Shares covered by such Option
shall revert to the Plan.

          (c)  Disability of Optionee.  If an Optionee ceases to be a Service
               ----------------------
Provider as a result of the Optionee's Disability, the Optionee may exercise his
or her Option within such period of time as is specified in the Option Agreement
to the extent the Option is vested on the date of termination (but in no event
later than the expiration of the term of such Option as set forth in the Option
Agreement).  In the absence of a specified time in the Option Agreement, the
Option shall remain exercisable for twelve (12) months following the Optionee's
termination.  If, on the date of termination, the Optionee is not vested as to
his or her entire Option, the Shares covered by the unvested portion of the
Option shall revert to the Plan.  If, after termination, the Optionee does not
exercise his or her Option within the time specified herein, the Option shall
terminate, and the Shares covered by such Option shall revert to the Plan.

          (d)  Death of Optionee.  If an Optionee dies while a Service Provider,
               -----------------
the Option may be exercised within such period of time as is specified in the
Option Agreement (but in no event later than the expiration of the term of such
Option as set forth in the Notice of Grant), by the Optionee's estate or by a
person who acquires the right to exercise the Option by bequest or inheritance,
but only to the extent that the Option is vested on the date of death.  In the
absence of a specified time in the Option Agreement, the Option shall remain
exercisable for twelve (12) months following the Optionee's termination.  If, at
the time of death, the Optionee is not vested as to his or her entire Option,
the Shares covered by the unvested portion of the Option shall immediately
revert to the Plan.  The Option may be exercised by the executor or
administrator of the Optionee's estate or, if none, by the person(s) entitled to
exercise the Option under the Optionee's will or the laws of descent or
distribution.  If the Option is not so exercised within the time specified
herein, the Option shall terminate, and the Shares covered by such Option shall
revert to the Plan.

          (e)  Buyout Provisions.  The Administrator may at any time offer to
               -----------------
buy out for a payment in cash or Shares an Option previously granted based on
such terms and conditions as the Administrator shall establish and communicate
to the Optionee at the time that such offer is made.

     11.  Stock Purchase Rights.
          ---------------------

          (a)  Rights to Purchase.  Stock Purchase Rights may be issued either
               ------------------
alone, in addition to, or in tandem with other awards granted under the Plan
and/or cash awards made outside of the Plan.  After the Administrator determines
that it will offer Stock Purchase Rights under the Plan, it shall advise the
offeree in writing or electronically, by means of a Notice of Grant, of the
terms, conditions and restrictions related to the offer, including the number of
Shares that the offeree shall be entitled to purchase, the price to be paid, and
the time within which the offeree must accept such offer.  The offer shall be
accepted by execution of a Restricted Stock Purchase Agreement in the form
determined by the Administrator.

          (b)  Repurchase Option.  Unless the Administrator determines
               -----------------
otherwise, the Restricted Stock Purchase Agreement shall grant the Company a
repurchase option exercisable upon the voluntary or involuntary termination of
the purchaser's service with the Company for any reason (including death or
Disability). The purchase price for Shares repurchased pursuant to the
Restricted Stock Purchase Agreement shall be the original price paid by the
purchaser and may be paid by

                                                                             -9-
<PAGE>

cancellation of any indebtedness of the purchaser to the Company. The repurchase
option shall lapse at a rate determined by the Administrator.

          (c)  Other Provisions.  The Restricted Stock Purchase Agreement shall
               ----------------
contain such other terms, provisions and conditions not inconsistent with the
Plan as may be determined by the Administrator in its sole discretion.

          (d)  Rights as a Stockholder.  Once the Stock Purchase Right is
               -----------------------
exercised, the purchaser shall have the rights equivalent to those of a
stockholder, and shall be a stockholder when his or her purchase is entered upon
the records of the duly authorized transfer agent of the Company. No adjustment
will be made for a dividend or other right for which the record date is prior to
the date the Stock Purchase Right is exercised, except as provided in Section 13
of the Plan.

     12.  Non-Transferability of Options and Stock Purchase Rights.  Unless
          --------------------------------------------------------
determined otherwise by the Administrator, an Option or Stock Purchase Right may
not be sold, pledged, assigned, hypothecated, transferred, or disposed of in any
manner other than by will or by the laws of descent or distribution and may be
exercised, during the lifetime of the Optionee, only by the Optionee.  If the
Administrator makes an Option or Stock Purchase Right transferable, such Option
or Stock Purchase Right shall contain such additional terms and conditions as
the Administrator deems appropriate.

     13.  Formula Option Grants to Outside Directors.  All grants of Options to
          ------------------------------------------
Outside Directors pursuant to this Section shall be automatic and
nondiscretionary and shall be made strictly in accordance with the following
provisions:

          (a)  All Options granted pursuant to this Section shall be
Nonstatutory Stock Options and, except as otherwise provided herein, shall be
subject to the other terms and conditions of the Plan.

          (b)  No person shall have any discretion to select which Outside
Directors shall be granted Options under this Section or to determine the number
of Shares to be covered by such Options.

          (c)  Each person who first becomes an Outside Director following the
effective date of this Plan, as determined in accordance with Section 7 hereof,
shall be automatically granted an Option to purchase fifty thousand (50,000)
Shares (the "First Option") on the date on which such person first becomes an
Outside Director, whether through election by the stockholders of the Company or
appointment by the Board to fill a vacancy; provided, however, that an Inside
Director who ceases to be an Inside Director but who remains a Director shall
not receive a First Option.

          (d)  Each Outside Director shall be automatically granted an Option to
purchase ten thousand (10,000) Shares (a "Subsequent Option") on the date of the
annual meeting of the stockholders of the Company, if as of such date, he or she
shall have served on the Board for at least the preceding six (6) months.

          (e)  Notwithstanding the provisions of subsections (c) and (d) hereof,
any exercise of an Option granted before the Company has obtained stockholder
approval of the Plan in

                                                                            -10-
<PAGE>

accordance with Section 20 hereof shall be conditioned upon obtaining such
stockholder approval of the Plan in accordance with Section 20 hereof.

          (f)  The terms of each Option granted pursuant to this Section shall
be as follows:

               (i)   the term of the Option shall be ten (10) years.

               (ii)  the exercise price per Share shall be 100% of the Fair
Market Value per Share on the date of grant of the Option.

               (iii) subject to Section 14 hereof, each Option granted pursuant
to this Section shall vest and become exercisable as to 25% of the Shares
subject to the Option on the first anniversary of its date of grant, and as to
1/48th of the Shares subject to the Option each full month thereafter, provided
that the Optionee continues to serve as a Service Provider on such dates.

     14.  Adjustments Upon Changes in Capitalization, Dissolution, Merger or
          ------------------------------------------------------------------
Asset Sale.
----------

          (a)  Changes in Capitalization.  Subject to any required action by the
               -------------------------
stockholders of the Company, the number of shares of Common Stock covered by
each outstanding Option and Stock Purchase Right, and the number of shares of
Common Stock which have been authorized for issuance under the Plan but as to
which no Options or Stock Purchase Rights have yet been granted or which have
been returned to the Plan upon cancellation or expiration of an Option or Stock
Purchase Right, as well as the price per share of Common Stock covered by each
such outstanding Option or Stock Purchase Right, shall be proportionately
adjusted for any increase or decrease in the number of issued shares of Common
Stock resulting from a stock split, reverse stock split, stock dividend,
combination or reclassification of the Common Stock, or any other increase or
decrease in the number of issued shares of Common Stock effected without receipt
of consideration by the Company; provided, however, that conversion of any
convertible securities of the Company shall not be deemed to have been "effected
without receipt of consideration." Such adjustment shall be made by the Board,
whose determination in that respect shall be final, binding and conclusive.
Except as expressly provided herein, no issuance by the Company of shares of
stock of any class, or securities convertible into shares of stock of any class,
shall affect, and no adjustment by reason thereof shall be made with respect to,
the number or price of shares of Common Stock subject to an Option or Stock
Purchase Right.

          (b)  Dissolution or Liquidation.  In the event of the proposed
               --------------------------
dissolution or liquidation of the Company, the Administrator shall notify each
Optionee as soon as practicable prior to the effective date of such proposed
transaction. The Administrator in its discretion may provide for an Optionee to
have the right to exercise his or her Option until ten (10) days prior to such
transaction as to all of the Optioned Stock covered thereby, including Shares as
to which the Option would not otherwise be exercisable. In addition, the
Administrator may provide that any Company repurchase option applicable to any
Shares purchased upon exercise of an Option or Stock Purchase Right shall lapse
as to all such Shares, provided the proposed dissolution or liquidation takes
place at the time and in the manner contemplated. To the extent it has not been
previously exercised, an Option or Stock Purchase Right will terminate
immediately prior to the consummation of such proposed action.

                                                                            -11-
<PAGE>

          (c)  Merger or Asset Sale.  In the event of a merger of the Company
               --------------------
with or into another corporation, or the sale of substantially all of the assets
of the Company, each outstanding Option and Stock Purchase Right shall be
assumed or an equivalent option or right substituted by the successor
corporation or a Parent or Subsidiary of the successor corporation. In the event
that the successor corporation refuses to assume or substitute for the Option or
Stock Purchase Right, the Optionee shall fully vest in and have the right to
exercise the Option or Stock Purchase Right as to all of the Optioned Stock,
including Shares as to which it would not otherwise be vested or exercisable. If
an Option or Stock Purchase Right becomes fully vested and exercisable in lieu
of assumption or substitution in the event of a merger or sale of assets, the
Administrator shall notify the Optionee in writing or electronically that the
Option or Stock Purchase Right shall be fully vested and exercisable for a
period of fifteen (15) days from the date of such notice, and the Option or
Stock Purchase Right shall terminate upon the expiration of such period. For the
purposes of this paragraph, the Option or Stock Purchase Right shall be
considered assumed if, following the merger or sale of assets, the option or
right confers the right to purchase or receive, for each Share of Optioned Stock
subject to the Option or Stock Purchase Right immediately prior to the merger or
sale of assets, the consideration (whether stock, cash, or other securities or
property) received in the merger or sale of assets by holders of Common Stock
for each Share held on the effective date of the transaction (and if holders
were offered a choice of consideration, the type of consideration chosen by the
holders of a majority of the outstanding Shares); provided, however, that if
such consideration received in the merger or sale of assets is not solely common
stock of the successor corporation or its Parent, the Administrator may, with
the consent of the successor corporation, provide for the consideration to be
received upon the exercise of the Option or Stock Purchase Right, for each Share
of Optioned Stock subject to the Option or Stock Purchase Right, to be solely
common stock of the successor corporation or its Parent equal in fair market
value to the per share consideration received by holders of Common Stock in the
merger or sale of assets.

     15.  Date of Grant.  The date of grant of an Option or Stock Purchase Right
          -------------
shall be, for all purposes, the date on which the Administrator makes the
determination granting such Option or Stock Purchase Right, or such other later
date as is determined by the Administrator.  Notice of the determination shall
be provided to each Optionee within a reasonable time after the date of such
grant.

     16.  Amendment and Termination of the Plan.
          -------------------------------------

          (a)  Amendment and Termination.  The Board may at any time amend,
               -------------------------
alter, suspend or terminate the Plan.

          (b)  Stockholder Approval.  The Company shall obtain stockholder
               --------------------
approval of any Plan amendment to the extent necessary and desirable to comply
with Applicable Laws.

          (c)  Effect of Amendment or Termination.  No amendment, alteration,
               ----------------------------------
suspension or termination of the Plan shall impair the rights of any Optionee,
unless mutually agreed otherwise between the Optionee and the Administrator,
which agreement must be in writing and signed by the Optionee and the Company.
Termination of the Plan shall not affect the Administrator's ability to exercise
the powers granted to it hereunder with respect to Options granted under the
Plan prior to the date of such termination.

                                                                            -12-
<PAGE>

     17.  Conditions Upon Issuance of Shares.
          ----------------------------------

          (a)  Legal Compliance.  Shares shall not be issued pursuant to the
               ----------------
exercise of an Option or Stock Purchase Right unless the exercise of such Option
or Stock Purchase Right and the issuance and delivery of such Shares shall
comply with Applicable Laws and shall be further subject to the approval of
counsel for the Company with respect to such compliance.

          (b)  Investment Representations.  As a condition to the exercise of
               --------------------------
an Option or Stock Purchase Right, the Company may require the person exercising
such Option or Stock Purchase Right to represent and warrant at the time of any
such exercise that the Shares are being purchased only for investment and
without any present intention to sell or distribute such Shares if, in the
opinion of counsel for the Company, such a representation is required.

     18.  Inability to Obtain Authority.  The inability of the Company to obtain
          -----------------------------
authority from any regulatory body having jurisdiction, which authority is
deemed by the Company's counsel to be necessary to the lawful issuance and sale
of any Shares hereunder, shall relieve the Company of any liability in respect
of the failure to issue or sell such Shares as to which such requisite authority
shall not have been obtained.

     19.  Reservation of Shares.  The Company, during the term of this Plan,
          ---------------------
will at all times reserve and keep available such number of Shares as shall be
sufficient to satisfy the requirements of the Plan.

     20.  Stockholder Approval.  The Plan shall be subject to approval by the
          --------------------
stockholders of the Company within twelve (12) months after the date the Plan is
adopted.  Such stockholder approval shall be obtained in the manner and to the
degree required under Applicable Laws.

                                                                            -13-
<PAGE>

                                MEDIAPLEX, INC.

                     AMENDED AND RESTATED 1999 STOCK PLAN

                            STOCK OPTION AGREEMENT

A.   Grant of Option.
     ---------------

     The Plan Administrator of Mediaplex, Inc., a Delaware corporation (the
"Company"), hereby grants to the Optionee named in the Notice of Grant attached
to this Agreement (the "Optionee") an option (the "Option") to purchase the
number of Shares, as set forth in the Notice of Grant, at the exercise price per
share set forth in the Notice of Grant (the "Exercise Price"), subject to the
terms and conditions of the Plan, which is incorporated herein by reference.
Subject to Section 16(c) of the Plan, in the event of a conflict between the
terms and conditions of the Plan and the terms and conditions of this Option
Agreement, the terms and conditions of the Plan shall prevail.

     If designated in the Notice of Grant as an Incentive Stock Option ("ISO"),
this Option is intended to qualify as an Incentive Stock Option under Section
422 of the Code.  However, if this Option is intended to be an Incentive Stock
Option, to the extent that it exceeds the $100,000 rule of Code Section 422(d)
it shall be treated as a Nonstatutory Stock Option ("NSO").

     B.   Exercise of Option.
          ------------------

          1.   Right to Exercise.  This Option is exercisable during its term
               -----------------
in accordance with the Vesting Schedule set out in the Notice of Grant and the
applicable provisions of the Plan and this Option Agreement.

          2.   Method of Exercise.  This Option is exercisable by delivery of
               ------------------
an exercise notice, in the form attached as Exhibit A (the "Exercise Notice"),
                                            ---------
which shall state the election to exercise the Option, the number of Shares in
respect of which the Option is being exercised (the "Exercised Shares"), and
such other representations and agreements as may be required by the Company
pursuant to the provisions of the Plan. The Exercise Notice shall be completed
by the Optionee and delivered to the Corporate Secretary. The Exercise Notice
shall be accompanied by payment of the aggregate Exercise Price as to all
Exercised Shares. This Option shall be deemed to be exercised upon receipt by
the Company of such fully executed Exercise Notice accompanied by such aggregate
Exercise Price.

          No Shares shall be issued pursuant to the exercise of this Option
unless such issuance and exercise complies with Applicable Laws.  Assuming such
compliance, for income tax purposes the Exercised Shares shall be considered
transferred to the Optionee on the date the Option is exercised with respect to
such Exercised Shares.

     C.   Method of Payment.
          -----------------

          Payment of the aggregate Exercise Price shall be by any of the
following, or a combination thereof, at the election of the Optionee:

          1.   cash; or

          2.   check; or

          3.   consideration received by the Company under a cashless exercise
program implemented by the Company in connection with the Plan; or

          4.   surrender of other Shares which (a) in the case of Shares
acquired upon exercise of an option, have been owned by the Optionee for more
than six (6) months on the date of surrender, and (b) have a Fair Market Value
on the date of surrender equal to the aggregate Exercise Price of the Exercised
Shares; or
<PAGE>

          5.   to the extent permitted by the Administrator, delivery of a
properly executed exercise notice together with such other documentation as the
Administrator and the broker, if applicable, shall require to effect an exercise
of the Option and delivery to the Company of the sale proceeds required to pay
the Exercise Price.

     D.   Non-Transferability of Option.
          -----------------------------

          This Option may not be transferred in any manner otherwise than by
will or by the laws of descent or distribution and may be exercised during the
lifetime of Optionee only by the Optionee. The terms of the Plan and this Option
Agreement shall be binding upon the executors, administrators, heirs, successors
and assigns of the Optionee.

     E.   Term of Option.
          --------------

          This Option may be exercised only within the term set out in the
Notice of Grant, and may be exercised during such term only in accordance with
the Plan and the terms of this Option Agreement.

     F.   Termination Period.
          ------------------

          This Option may be exercised for three (3) months after Optionee
ceases to be a Service Provider.  Upon the death or disability of the Optionee,
this Option may be exercised for twelve (12) months after Optionee ceases to be
a Service Provider.  In no event shall this Option be exercised later than the
Term/Expiration Date as provided above.

     G.   Tax Consequences.
          ----------------

          Some of the federal tax consequences relating to this Option, as of
the date of this Option, are set forth below. THIS SUMMARY IS NECESSARILY
INCOMPLETE, AND THE TAX LAWS AND REGULATIONS ARE SUBJECT TO CHANGE. THE OPTIONEE
SHOULD CONSULT A TAX ADVISER BEFORE EXERCISING THIS OPTION OR DISPOSING OF THE
SHARES.

     H.   Exercising the Option.
          ---------------------

          1.   Nonstatutory Stock Option.  The Optionee may incur regular
               -------------------------
federal income tax liability upon exercise of a NSO. The Optionee will be
treated as having received compensation income (taxable at ordinary income tax
rates) equal to the excess, if any, of the Fair Market Value of the Exercised
Shares on the date of exercise over their aggregate Exercise Price. If the
Optionee is an Employee or a former Employee, the Company will be required to
withhold from his or her compensation or collect from Optionee and pay to the
applicable taxing authorities an amount in cash equal to a percentage of this
compensation income at the time of exercise, and may refuse to honor the
exercise and refuse to deliver Shares if such withholding amounts are not
delivered at the time of exercise.

          2.   Incentive Stock Option.  If this Option qualifies as an ISO,
               ----------------------
the Optionee will have no regular federal income tax liability upon its
exercise, although the excess, if any, of the Fair Market Value of the Exercised
Shares on the date of exercise over their aggregate Exercise Price will be
treated as an adjustment to alternative minimum taxable income for federal tax
purposes and may subject the Optionee to alternative minimum tax in the year of
exercise. In the event that the Optionee ceases to be an Employee but remains a
Service Provider, any Incentive Stock Option of the Optionee that remains
unexercised shall cease to qualify as an Incentive Stock Option and will be
treated for tax purposes as a Nonstatutory Stock Option on the date three (3)
months and one (1) day following such change of status.

          3.   Disposition of Shares.
               ---------------------

NSO.  If the Optionee holds NSO Shares for at least one year, any gain realized
---
on disposition of the Shares will be treated as long-term capital gain for
federal income tax purposes.

ISO.  If the Optionee holds ISO Shares for at least one year after exercise and
---
two years after the grant date, any gain realized on disposition of the Shares
will be treated as long-term capital gain for federal income tax

                                      -2-
<PAGE>

purposes. If the Optionee disposes of ISO Shares within one year after exercise
or two years after the grant date, any gain realized on such disposition will be
treated as compensation income (taxable at ordinary income rates) to the extent
of the excess, if any, of the lesser of (A) the difference between the Fair
Market Value of the Shares acquired on the date of exercise and the aggregate
Exercise Price, or (B) the difference between the sale price of such Shares and
the aggregate Exercise Price. Any additional gain will be taxed as capital gain,
short-term or long-term depending on the period that the ISO Shares were held.

Notice of Disqualifying Disposition of ISO Shares.  If the Optionee sells or
-------------------------------------------------
otherwise disposes of any of the Shares acquired pursuant to an ISO on or before
the later of (i) two years after the grant date, or (ii) one year after the
exercise date, the Optionee shall immediately notify the Company in writing of
such disposition.  The Optionee agrees that he or she may be subject to income
tax withholding by the Company on the compensation income recognized from such
early disposition of ISO Shares by payment in cash or out of the current
earnings paid to the Optionee.

     I.   Entire Agreement; Governing Law.
          -------------------------------

          The Plan is incorporated herein by reference. The Plan and this Option
Agreement constitute the entire agreement of the parties with respect to the
subject matter hereof and supersede in their entirety all prior undertakings and
agreements of the Company and Optionee with respect to the subject matter
hereof, and may not be modified adversely to the Optionee's interest except by
means of a writing signed by the Company and Optionee. This agreement is
governed by the internal substantive laws, but not the choice of law rules, of
Delaware.

     J.   Understanding of Agreement.
          --------------------------

          Optionee has reviewed the Plan and this Option Agreement in their
entirety, has had an opportunity to obtain the advice of counsel prior to
executing this Option Agreement and fully understands all provisions of the Plan
and Option Agreement.  Optionee hereby agrees to accept this as binding,
conclusive and final all decisions or interpretations of the Administrator upon
any questions relating to the Plan and Option Agreement.  Optionee further
agrees to notify the Company upon any change in residence address.

     K.   NO GUARANTEE OF CONTINUED SERVICE.
          ---------------------------------

          OPTIONEE ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES PURSUANT
TO THE VESTING SCHEDULE HEREOF IS EARNED ONLY BY CONTINUING AS A SERVICE
PROVIDER AT THE WILL OF THE COMPANY (AND NOT THROUGH THE ACT OF BEING HIRED,
BEING GRANTED AN OPTION OR PURCHASING SHARES HEREUNDER). OPTIONEE FURTHER
ACKNOWLEDGES AND AGREES THAT THIS AGREEMENT, THE TRANSACTIONS CONTEMPLATED
HEREUNDER AND THE VESTING SCHEDULE SET FORTH HEREIN DO NOT CONSTITUTE AN EXPRESS
OR IMPLIED PROMISE OF CONTINUED ENGAGEMENT AS A SERVICE PROVIDER FOR THE VESTING
PERIOD, FOR ANY PERIOD, OR AT ALL, AND SHALL NOT INTERFERE WITH OPTIONEE'S RIGHT
OR THE COMPANY'S RIGHT TO TERMINATE OPTIONEE'S RELATIONSHIP AS A SERVICE
PROVIDER AT ANY TIME, WITH OR WITHOUT CAUSE.

                                     -3-
<PAGE>

                               CONSENT OF SPOUSE
                               -----------------

     The undersigned spouse of Optionee has read and hereby approves the terms
and conditions of the Plan and this Option Agreement.  In consideration of the
Company's granting his or her spouse the right to purchase Shares as set forth
in the Plan and this Option Agreement, the undersigned hereby agrees to be
irrevocably bound by the terms and conditions of the Plan and this Option
Agreement and further agrees that any community property interest shall be
similarly bound.  The undersigned hereby appoints the undersigned's spouse as
attorney-in-fact for the undersigned with respect to any amendment or exercise
of rights under the Plan or this Option Agreement.

Dated: _______________, _____

                                     __________________________________________
                                     Signature of Spouse

<PAGE>

                                   EXHIBIT A
                                   ---------

                                MEDIAPLEX, INC.
                     AMENDED AND RESTATED 1999 STOCK PLAN
                                EXERCISE NOTICE

Mediaplex, Inc.
177 Steuart Street, Second Floor
San Francisco, California 94105-1230
Attention: Corporate Secretary

     1.   Exercise of Option.  Effective as of today, ________________, _____,
          ------------------
the undersigned ("Purchaser") hereby elects to purchase ______________ shares
(the "Shares") of the Common Stock of Mediaplex, Inc. (the "Company") under and
pursuant to the Amended and Restated 1999 Stock Plan (the "Plan") and the Stock
Option Agreement (the "Option Agreement"). The purchase price for the Shares
shall be $__________, as required by the Option Agreement.

     2.   Delivery of Payment.  Purchaser herewith delivers to the Company the
          -------------------
full purchase price for the Shares.

     3.   Representations of Purchaser.  Purchaser acknowledges that Purchaser
          ----------------------------
has received, read and understood the Plan and the Option Agreement and agrees
to abide by and be bound by their terms and conditions.

     4.   Rights as Shareholder.  Until the issuance (as evidenced by the
          ---------------------
appropriate entry on the books of the Company or of a duly authorized transfer
agent of the Company) of the Shares, no right to vote or receive dividends or
any other rights as a shareholder shall exist with respect to the Optioned
Stock, notwithstanding the exercise of the Option. The Shares so acquired shall
be issued to the Optionee as soon as practicable after exercise of the Option.
No adjustment will be made for a dividend or other right for which the record
date is prior to the date of issuance, except as provided in Section 14 of the
Plan.

     5.   Tax Consultation.  Purchaser understands that Purchaser may suffer
          ----------------
adverse tax consequences as a result of Purchaser's purchase or disposition of
the Shares. Purchaser represents that Purchaser has consulted with any tax
consultants Purchaser deems advisable in connection with the purchase or
disposition of the Shares and that Purchaser is not relying on the Company for
any tax advice.

     6.   Entire Agreement; Governing Law.  The Plan and Option Agreement are
          -------------------------------
incorporated herein by reference.  This Agreement, the Plan and the Option
Agreement constitute the entire agreement of the parties with respect to the
subject matter hereof and supersede in their entirety all prior undertakings and
agreements of the Company and Purchaser with respect to the subject matter
hereof, and may not be modified adversely to the Purchaser's interest except by
means of a writing signed by the Company and Purchaser.  This agreement is
governed by the internal substantive laws, but not the choice of law rules, of
Delaware.

Submitted by:                           Accepted by:

PURCHASER                               MEDIAPLEX, INC.

________________________________        _____________________________________
Signature                               By

________________________________        _____________________________________
Print Name                              Its

Residence Address:                      Address:
-----------------                       -------

________________________________        Mediaplex, Inc.
________________________________        177 Steuart Street, Second Floor
                                        San Francisco, California 94105-1230
                                        Date Received: ______________________

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