Document:

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                                                                    Exhibit 10.3

                         CORPORATE SERVICES AGREEMENT
                         ----------------------------

     This Agreement is dated as of August 25, 2000, between Arthur D. Little,
Inc., a Massachusetts corporation ("Parent"), and c-quential, Inc., a Delaware
corporation ("Sub").

     WHEREAS, Parent and Sub have entered into a Reorganization Agreement dated
as of August 25, 2000 (the "Reorganization Agreement") pursuant to which Parent,
together with the other members of the Parent Group, is assigning and
transferring to Sub and the other members of the Sub Group certain assets
associated with the Sub Business in exchange for the assumption by Sub and the
other members of the Sub Group of certain liabilities and obligations associated
with such Sub Business and the issuance by Sub to Arthur D. Little,
International, Inc., a Delaware corporation and the parent of Sub (or a designee
thereof as contemplated by the Reorganization Agreement), the Sub Shares on such
terms and conditions as are contained therein; and

     WHEREAS, the Reorganization Agreement provides that Parent and Sub shall
enter into an agreement relating to certain transition services to be provided
by the parties to the other parties and the members of their Group with respect
to the Sub Business after the Effective Date as well as certain other
arrangements, and this Agreement is entered into in order to fulfill that
provision.

     NOW, THEREFORE, in consideration of the foregoing and the other agreements
and covenants contained herein, and for other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, the parties hereto
agree as follows:

SECTION 1.  DEFINITIONS.
            -----------

     Section 1.1  Defined Terms.  For purposes of this Agreement, the following
                  -------------
terms shall have the following meanings:

     "Additional Services" shall mean Additional Sub Services and Additional
Parent Services, collectively.

     "Additional Parent Services" shall have the meaning set forth in Section
2.2 hereof.

     "Additional Sub Services" shall have the meaning set forth in Section 2.2
hereof.

     "Ancillary Agreements" shall have the meaning given to such term in the
Reorganization Agreement.

     "Assumed Contracts" shall mean the client contracts in effect on the date
hereof comprising part of the Sub Business which were assigned by Parent and the
members of the Parent Group to Sub or a member of the Sub Group but for which
the consent to such assignment by the third party client, or novation, had not
been obtained as of the Effective Date.

     "Cross-Consulting Services" shall have the meaning set forth in Section 5
hereof.
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     "Cross-Consulting Services Fee" shall mean, with respect to any specific
matter in which a party receives Cross-Consulting Services hereunder, an amount
which is equal to eighty-five percent (85%) of the gross professional service
revenues received by the recipient of such Cross-Consulting Services from a
client in respect of such matter.

     "Effective Date" shall have the meaning given to such term in the
Reorganization Agreement.

     "Group" shall have the meaning given to such term in the Reorganization
Agreement.

     "Independent Directors" with respect to Sub, shall mean a member of the Sub
Board of Directors who is not an employee or officer of Sub or an officer,
employee or director of Parent or a member of the Parent Group, and with respect
to Parent, shall mean a member of the Parent Board of Directors who is not an
employee or officer of Parent or a member of the Parent Group.

     "IPO Closing Date" shall have the meaning given to such term in the
Reorganization Agreement.

     "Parent" shall mean Arthur D. Little, Inc., a Massachusetts corporation.

     "Parent Group" shall have the meaning given to such term in the
Reorganization Agreement.

     "Parent Services" shall mean the services set forth on Schedule A attached
                                                            ----------
hereto from time to time.

     "Provider" shall mean the provider of Services hereunder.

     "Recipient" shall mean the recipient of any Services hereunder.

     "Reorganization Agreement" shall have the meaning set forth in the
recitals.

     "Services" shall mean the Parent Services and Sub Services, collectively.

     "Sub" shall mean c-quential, Inc., a Delaware corporation.

     "Sub Business" shall have the meaning given to such term in the
Reorganization Agreement.

     "Sub Group" shall have the meaning given to such term in the Reorganization
Agreement.

     "Sub Services" shall mean the services set forth on Schedule B attached
                                                         ----------
hereto from time to time.

     "Sub Shares" shall have the meaning given to such term in the
Reorganization Agreement.

     "Term" shall have the meaning set forth in Section 7.1 hereof.

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     Section 1.2  Capitalized Terms.  All other capitalized terms used herein
                  -----------------
and not defined shall have the meanings given to them in the Reorganization
Agreement.

SECTION 2.  SERVICES TO BE PROVIDED.
            -----------------------

     Section 2.1  Scope Of Services.
                  -----------------

          (a) During the Term of this Agreement, upon the written request from
time to time made by Sub, Parent agrees to provide, and agrees to cause the
members of the Parent Group to provide to Sub and the members of the Sub Group,
and Sub agrees to purchase from Parent, on its behalf and on behalf of the other
members of the Sub Group, the Parent Services described in Schedule A attached
hereto, on the terms and conditions set forth herein.  Subject to the provisions
of Section 7.2(b) hereof, Sub may elect to discontinue any Parent Service at any
time in accordance with Section 7.2(a) hereof.

          (b) During the Term of this Agreement, upon the written request from
time to time made by Parent, Sub agrees to provide to Parent and agrees to cause
the members of the Sub Group to provide, and the members of the Parent Group,
and Parent agrees to purchase from Sub, on its behalf and on behalf of the other
members of the Parent Group, the Sub Services described in Schedule B attached
hereto, on the terms and conditions set forth herein. Subject to the provision
of Section 7.2 (b) hereof, Parent may elect to discontinue any Sub Service at
any time in accordance with section 7.2(a) hereof.

     Section 2.2  Additional Services.
                  -------------------

          (a) From time to time after the Effective Date, Sub may request that
Parent provide additional administrative and support services (the "Additional
Parent Services") to Sub until such time as Sub is able to otherwise contract or
arrange for such services.

          (b) From time to time after the Effective Date, Parent may request
that Sub provide additional administrative and support services (the "Additional
Sub Services") to Parent until such time as Parent is able to otherwise contract
or arrange for such services.

          (c) Upon a request for such Additional Services, Parent and Sub shall
negotiate in good faith as to the scope of such Additional Services and the
terms and conditions under which such Additional Services may be provided by the
Provider; provided that, unless otherwise agreed to by the parties, such
Additional Services will be provided only to the extent, and on a basis
comparable to that, provided by the Provider with respect to its own operations.
Any mutually agreed-upon Additional Services to be provided by a Provider or
another member of the Provider's Group will be added to the applicable service
schedule, and such Additional Services will be deemed to be a "Parent Service"
or "Sub Parent Service," as applicable, and a "Service" for all purposes under
this Agreement unless expressly stated otherwise in this Agreement.

     Section 2.3  Limitations On Services.
                  -----------------------

          (a) Each Service furnished pursuant to this Agreement shall be in all
material respects equivalent to and limited to the same type, quality, quantity
and timeliness of such service that the Provider provides to its own
organization and personnel, and to those of the other

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members of the Provider's Group. Each party acknowledges that the other may make
changes from time to time in the manner of performing the Services if such
Provider is making similar changes for itself, any member of its Group, or its
respective business. Each party further acknowledges that such Services will be
performed by those employees of such Provider who perform similar services for
such Provider in the normal course of their employment. Accordingly, except as
otherwise agreed upon by the parties, neither party shall be obligated to make
available any incremental Services to the extent that doing so would
unreasonably interfere with the performance of any employee of such party in
connection with his or her responsibilities to the other, require additional
staff or otherwise cause an unreasonable burden to the other, any member of the
its Group, or their respective business. Each party acknowledges and agrees that
duly authorized agents of the other shall have the right to enter their premises
to the extent reasonably necessary or convenient to provide the Services.

          (b) If a Provider ceases to provide any of the Services to its own
business units or if the level of such Services is reduced for any reason, such
Provider may also cease to provide or reduce the level of such Services provided
to the Recipient under this Agreement.  Each party agrees to provide the other
as promptly as practicable notice of any substantial change in the level of such
Services provided under this Agreement, but in no event shall such Provider
provide less than ninety (90) days advance notice of such date of any Service
discontinuance.

          (c) Neither party shall be required to provide any Service to the
extent the performance of such Service becomes "impracticable" as a result of a
cause or causes outside the reasonable control of such party, including
unfeasible technological requirements, or to the extent the performance of such
Services would require such party to violate any applicable laws, rules or
regulations or would result in the breach of any license, lease or other
applicable contract.

SECTION 3. CHARGES AND PAYMENTS.
           --------------------

          Section 3.1 Charges for Services. Except as specifically set forth on
                      --------------------
Schedule A and Schedule B attached hereto, it is the intention of the parties
----------     ----------
hereto that the charges for Services to be provided pursuant to this Agreement
shall be determined and allocated for each jurisdiction in accordance with
methods consistent with past practices and procedures observed by Parent and Sub
prior to the effective date concerning intercompany services and accounts (i.e.,
based on the proportionate amount of direct employee compensation of the parties
in such jurisdiction), with a view in every case toward providing the Provider
with a reimbursement of fully allocated direct and indirect costs of providing
Services but without any profit to such Provider.

     Charges for each Service shall be determined on a monthly basis.  With
respect to any Services which are provided for a period which is less than a
full calendar month, or where the scope of such services is changed in
accordance with Section 2.3(b) during such period, the charges with respect to
such Service shall be appropriately pro-rated.

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     Section 3.2  Payments For Services.
                  ---------------------

          (a) As soon as practicable, but in no event more than fifteen (15)
days, following the last business day of a calendar month during which this
Agreement is in effect, Provider shall submit to Recipient a written invoice for
the aggregate amount to be charged to Recipient for Services rendered during the
month prior to the just completed month; provided, that each such invoice shall
                                         --------
indicate the amount of charges being assessed for each Service provided and
shall include such documentation as is reasonably necessary to substantiate such
amounts.  Recipient shall pay to Provider the invoiced amount within thirty (30)
days after receipt of an invoice.

          (b) Whenever the provision of any Service pursuant to this Agreement
is terminated for any reason, Provider shall, as promptly as practicable, but in
no event more than fifteen (15) business days, after the termination of such
Service, submit to Recipient a written invoice for the aggregate amount still
owed to Provider with respect to such Service, together with such documentation
as is reasonably necessary to substantiate such amounts. Recipient shall pay to
Provider the invoiced amount within thirty (30) days after receipt of an
invoice.

     Section 3.3  Taxes or Other Governmental Charges.  All federal, state,
                  -----------------------------------
foreign and local taxes, charges, fees and similar liabilities, except taxes
based on Provider's net income, which are levied on either party in connection
with the provision of any Services hereunder, shall be for Recipient's account
and paid directly by Provider or, if required to be paid by Recipient, shall be
added to the next invoice.  Provider shall provide Recipient with evidence of
the payment of any such taxes by Provider with such invoice.  Notwithstanding
the foregoing, to the extent that the provisions of this Section 3.3 are
inconsistent with the provisions of the Tax Allocation Agreement with respect to
the subject matters thereof, the provisions of the Tax Allocation Agreement
shall control.

     Section 3.4  Out-Of-Pocket/Direct Expenses.  To the extent it is not
                  -----------------------------
duplicative of Recipient's payment obligations set forth in Section 3.1 above,
Recipient agrees to pay directly or to reimburse Provider for all reasonable
out-of-pocket and direct expenses incurred by Provider in respect of the
provision of any Services, including, without limitation, all reasonable
expenses for outside accounting, legal, recruiting, consulting, marketing and
other professional services.  All payments or reimbursements to be made under
this Section 3.4 by Recipient shall, except as otherwise provided herein, be
made not later than thirty (30) days following receipt by Recipient of an
invoice therefor.

     Section 3.5  Performance Under Other Agreements.  Notwithstanding anything
                  ----------------------------------
to the contrary contained herein, neither party shall be charged under this
Agreement for any obligations that are specifically required to be performed
under the Reorganization Agreement or any other Ancillary Agreement and any such
other obligations shall be performed and charged for (if applicable) in
accordance with the terms of the Reorganization Agreement or such other
Ancillary Agreement.

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     SECTION 4. INDEPENDENT CONTRACTOR STATUS.
                -----------------------------

     In carrying out the provisions of this Agreement, each party is and shall
be deemed to be for all purposes a separate and independent entity, and no
partnership, joint venture or other arrangement shall be deemed to have been
created hereunder.  Provider shall select its employees and agents, and such
employees and agents shall be under the exclusive and complete supervision and
control of Provider.  Provider hereby acknowledges responsibility for full
payment of wages and other compensation to all employees and agents engaged in
the performance of the Services hereunder.  It is the express intent of this
Agreement that Provider shall render and perform the Services as an independent
contractor in accordance with its own standards, subject to its compliance with
the provisions of this Agreement.

     SECTION 5. AGREEMENTS REGARDING CROSS-CONSULTING.
                -------------------------------------

     In addition to the other Services provided herein, Parent shall make
available to Sub, at the request of Sub, the services of Parent's management
consultants and other professionals, and Sub shall make available to Parent, at
the request of Parent, the services of Sub's management consultants and other
professionals (in either case, "Cross-Consulting Services").  The Cross-
Consulting Services shall be in all material respects limited to the type,
quality, quantity and timeliness of such services that the party providing such
Cross-Consulting Services provides on behalf of itself and the other members of
its Group, and shall be limited as to the general availability of the party (and
its employees and consultants) providing such Cross-Consulting Services and as
would not otherwise conflict with the interests of such providing party.  The
recipient of such Cross-Consulting Services shall pay the provider of such Cross
Consulting Services, within thirty (30) days of receipt of payment therefor from
the client in respect of the performance of such Cross-Consulting Services, the
Cross-Consulting Services Fee.  Notwithstanding the foregoing, the provisions of
this Section 5 shall in no way limit the obligations and rights of the parties
in respect of the Assumed Contracts, including, without limitation, the
obligation of Parent or the applicable Parent Group Member to forward to Sub one
hundred percent (100%) of the fees received by Parent or such Parent Group
Member under an Assumed Contact for services performed by Sub or a Sub Group
Member from and after the Effective Date, as provided in Section 7.3.2 of the
Reorganization Agreement.

     SECTION 6. LIMITED LIABILITY; INDEMNIFICATION.
                ----------------------------------

     Section 6.1  Limited Liability.  Neither party shall be liable to the other
party for any special, indirect, incidental, exemplary or consequential damages,
or for loss of profits or revenues, whether arising in contract, tort (including
negligence), under any warranty or otherwise, arising out of its performance or
non-performance under this Agreement or the termination of this Agreement, even
if Parent or Sub, as the case may be, has been advised of the possibilities of
such damages.

     Section 6.2  Disclaimer of Warranty.  NEITHER PARENT NOR SUB MAKES ANY
REPRESENTATIONS OR WARRANTIES WHATSOEVER, EXPRESS OR IMPLIED, INCLUDING, WITHOUT
LIMITATION ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE, WITH RESPECT TO THE SERVICES TO BE PROVIDED BY IT UNDER THIS AGREEMENT.
In the event

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the performance or non-performance of any Service to be provided hereunder
results in direct damages to Recipient, Provider shall be liable only to the
extent such performance or non-performance was the result of Provider's gross
negligence or willful misconduct, and Provider's maximum, cumulative and sole
liability to Recipient for such direct damages shall be limited to an amount up
to the aggregate amount actually paid by the Recipient to Provider for such
Service up to the date of the performance or non-performance giving rise to the
direct damages. Recipient acknowledges that such payment constitutes fair and
reasonable compensation for any direct damages. Notice of any claim for direct
damages must be made within one (1) year of the date of the event giving rise to
such claim and such claim must specify the damage amount claimed and a
description of the Service and the act or omission giving rise to the claim.

     Section 6.3 Indemnification.  Recipient, on its behalf and on behalf of the
other members of its Group, agrees to indemnify and hold harmless Provider and
the other members of its Group, and each of their respective directors,
officers, employees, agents, representatives, shareholders, transferees,
successors and assigns against any claims, actions, demands, judgments, losses,
costs, expenses, damages and liabilities (including reasonable attorneys' fees
and disbursements) related to or arising out of or connected with such Services,
regardless of the legal theory asserted.  The foregoing indemnity applies to
claims, actions and demands for which Provider may be, or may be claimed to be,
partially or solely liable; provided that the foregoing indemnity will not apply
with respect to any claim for direct damages asserted by Recipient against
Provider as provided in Section 6.2 above.

     SECTION 7. TERM OF AGREEMENT

     Section 7.1  Term.  This Agreement shall become effective on the Effective
                  ----
Date and shall remain in effect until the earlier of (a) the discontinuance or
termination of all Services to be provided hereunder in accordance with the
Section 7.2 of this Agreement and (b) the third anniversary of the date of the
IPO Closing Date (such period, the "Term"), unless earlier terminated by the
mutual agreement of the parties.

     Section 7.2  Discontinuation or Termination of Services.
                  ------------------------------------------
          (a) A Recipient may discontinue its use of any such Service (i) upon
written notice given to Provider of such Service not less than one hundred
twenty (120) days prior to the proposed date of Service discontinuance or (ii)
immediately upon the bankruptcy or insolvency of Provider.  In addition, upon
the occurrence and continuance of a breach or default by either party in
connection with the provision of, or payment for, any Service hereunder for a
period of ten (10) days after written notice thereof has been given to the
defaulting party, the non-defaulting party may terminate such Service and shall
have no further obligation to the other party with respect thereto.  Upon
termination of this Agreement or any Service to be provided hereunder, all
unpaid fees with respect to Services provided prior to the date of termination
of this Agreement or such Services, as applicable, shall be due and payable
within thirty (30) days of the date of termination.  Notwithstanding any
termination of this Agreement or any Services to be provided hereunder, the
provisions of Sections 3, 5, 6 and 8 shall remain in effect indefinitely or
until such time as the obligations of both parties hereunder shall have been
fully discharged.

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          (b) Once a Service is discontinued or terminated in accordance with
the terms of this Agreement, Provider shall, upon the request of Recipient, not
again be obligated to later reinstate such Service; provided, however, that to
                                                    --------  -------
the extent Provider is thereafter requested to provide any discontinued or
terminated Service to Recipient, including any transition-related assistance
necessary for any other organization to perform the discontinued or terminated
Service, and Provider consents to provide such Service, the obligation of
Provider to provide such service shall be subject to the limitations set forth
in Section 2.3 hereof, and Provider shall be entitled to compensation reflecting
the actual costs incurred by Provider with respect thereto consistent with the
general payment terms contained herein.

     SECTION 8.  MISCELLANEOUS.
                 -------------

     Section 8.1  Force Majeure.  Anything contained in this Agreement to the
                  -------------
contrary notwithstanding, Provider's performance of its duties and obligations
hereunder shall be excused to the extent that failure of performance is caused
by any act of force majeure, including, but not limited, to acts of God or the
public enemy, acts of the government in its sovereign capacity, fires, floods,
epidemics, quarantine restrictions, freight embargoes, strikes, unusually severe
weather, sabotage or any other or similar event or casualty beyond the
reasonable control of Provider; provided, however, that Recipient shall not be
                                -----------------
obligated to pay Provider for such Services to the extent that Provider is
unable to perform as a result of a force majeure condition.  Provider shall
promptly notify Recipient of such events and make every reasonable effort to
restore such Services.  Notwithstanding the foregoing, Recipient shall be
responsible for making its own alternative arrangements with respect to
interrupted Services during the pendency of any force majeure condition.

     Section 8.2 Access to Information; Confidentiality. The provisions of
                 --------------------------------------
Section 8 of the Reorganization Agreement relating to the access to information
and confidentiality shall apply with respect to any information obtained or
learned by either party from the other party in connection with the parties'
performance of their respective obligations hereunder. This Section shall
survive the termination of this Agreement.

     Section 8.3 Dispute Resolution. All disputes, controversies or claims
                 ------------------
between Parent and Sub arising out of or relating to this Agreement, including,
without limitation, the breach, interpretation or validity of any term or
condition hereof, shall be resolved in accordance with the provisions of the
Reorganization Agreement relating to dispute resolution.

     Section 8.4 Amendment and Waiver. The provisions of this Agreement,
                 --------------------
including, without limitation, this Section, may not be waived and this
Agreement shall not be amended or modified except in accordance with this
Section. The provisions of this Agreement may be waived only by the written
consent of a majority of the Independent Directors of the party which is the
beneficiary of the particular provision being waived. No failure or delay by any
party in exercising any right or remedy hereunder shall operate as a waiver
thereof, and a waiver of a particular right or remedy on one occasion shall not
be deemed a waiver of any other right or remedy or a waiver on any subsequent
occasion. The provisions of this Agreement may be amended, modified or
supplemented only by the written consent of a majority of the Independent
Directors of each of the parties.

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     Section 8.5 Notices. Any notice to any party hereto given pursuant to this
                 -------
Agreement shall be in writing and shall be given by the means, and to the
addresses, set forth in the "Notices" section of the Reorganization Agreement.

     Section 8.6  Successors and Assigns. This Agreement may not be assigned by
                  ----------------------
either party without the prior written consent of the other party, and any
attempt to assign any rights or obligations hereunder without such consent shall
be void; provided, however, that either party may assign or transfer this
         -----------------
Agreement without the consent of the non-assigning party to an entity that
succeeds to all or substantially all of the business, assets or capital stock of
such party. This Agreement shall inure to the benefit of, and be binding upon
and enforceable against the respective successors and assigns of the parties
hereto.

     Section 8.7 Entire Agreement; Parties in Interest. This Agreement
                 -------------------------------------
(including the Schedules hereto and the applicable provisions of the
Reorganization Agreement and other Ancillary Agreements) comprises the entire
agreement between the parties hereto as to the subject matter hereof and
supersedes all prior agreements and understandings between them relating thereto
and, except as provided in Section 6.3 above, is not intended to confer upon any
person other than the parties hereto (including their successors and permitted
assigns) any rights or remedies hereunder.

     Section 8.8 Severability. If any term or provision of this Agreement or the
                 ------------
application thereof to any person or circumstance shall to any extent be invalid
or unenforceable, the remainder of this Agreement or the application of such
terms or provisions to persons or circumstances other than those as to which it
is invalid or unenforceable shall not be affected thereby and each term and
provision of this Agreement shall be valid and enforced to the fullest extent
permitted by law.

     Section 8.9 Captions. Captions and headings are supplied herein for
                 --------
convenience only and shall not be deemed a part of this Agreement for any
purpose.

     Section 8.10 Governing Law. This Agreement shall be governed by and
                  -------------
construed in accordance with the internal substantive laws of the Commonwealth
of Massachusetts, without giving effect to the principles of conflicts of laws
thereof.

     Section 8.11  Counterparts.  This Agreement may be executed in several
                   ------------
counterparts, and all counterparts so executed shall constitute one agreement,
binding upon the parties hereto, notwithstanding that the parties are not
signatory to the same counterpart.

                         [Signature page follows next]

                                       9
<PAGE>

     IN WITNESS WHEREOF, Parent and Sub have caused this Agreement to be duly
executed by their authorized representatives as an agreement under seal as of
the day and year first written above.

                                    PARENT:

                                    ARTHUR D. LITTLE, INC., a
                                    Massachusetts corporation

                                    By:/s/ Mark A. Brodsky
                                       ---------------------------
                                       Name:  Mark A. Brodsky
                                       Title: Exec. Vice President

                                    SUB:

                                    C-QUENTIAL, INC., a Delaware
                                    corporation

                                    By:/s/ Lorenzo C. Lamadrid
                                       ---------------------------
                                       Name:  Lorenzo C. Lamadrid
                                       Title: Director

                                       10
<PAGE>

                                  SCHEDULE A

                                PARENT SERVICES

1.  Payroll.
    -------
    Services to include preparation of payroll checks for Sub employees,
    maintenance of Sub employee payroll records, and any other ancillary
    payroll functions required.

2.  Accounting and Treasury.
    -----------------------

    Services to include assisting Sub's accounting department and auditors with
    general and specific accounting services, including preparation of
    financial and regulatory statements, filings with the Securities and
    Exchange Commission, such as Forms 10-K, 10-Q and 8-K, proxy statements and
    annual reports to stockholders, internal audit support services, and review
    of compliance with financial and accounting procedures.  Treasury services
    shall include assisting Sub in establishing bank accounts, managing cash
    accounts and currency exchange matters.

3.  Corporate Records.
    -----------------

    Services to include maintenance of corporate records and minute books,
    coordination with stock transfer agent, administration of option plans and
    issuances and stock repurchase programs.

4.  Tax Preparation.
    ---------------

    Services include assisting Sub in the preparation and filing of all tax
    returns, including federal, state and local corporate income taxes, state
    franchise taxes, local property taxes, state and local withholding taxes,
    all foreign taxes, value added tax returns, preparing for meetings with tax
    authorities and audits, and tax research and planning.

5.  Human Resources and Benefits Administration.
    -------------------------------------------

    Services include arranging and procuring general liability, property and
    casualty and other business insurance coverage, workers' compensation
    coverage, assistance with human resources functions, including maintaining
    personnel records, compliance with applicable laws and regulations
    regarding employees and labor in general, adoption of employee handbook and
    procedures for recruiting, hiring, promoting and terminating employees.

6.  Training.
    --------

    Services to include the provision and coordination of professional training
    for Sub's employees and consultants, including internal and external
    seminars and educational conferences and retreats, including, without
    limitation, training through the engagement of APDI; provided, however, the
    cost of Sub of such APDI services shall equal the cost Parent charges to
    the other members of the Parent Group.

                                       11
<PAGE>

7.  Risk Management.
    ---------------
    Services to include assisting Sub with minimizing exposure to liabilities
    and to maintain contacts with insurance brokers and carriers.

8.  Legal Services.
    --------------

    Services to include access to Parent's in-house counsel staff for legal
    advice and assistance in general corporate affairs and business
    transactions, compliance with regulatory matters (including, without
    limitation, matters in respect of federal and state securities laws),
    advice and services with respect to intellectual property matters, and
    coordinating contact and use of outside counsel.

9.  Information and Technology and other Administrative Support.
    -----------------------------------------------------------

    Services to include data processing and telecommunications assistance,
    secretarial and administrative assistance and support, graphics,
    photocopying and general office services.

10. Personal Property and Vehicles.
    ------------------------------

    Services to include the use of telecommunications equipment, including
    voice and data transmission equipment, photocopying equipment, computer
    hardware and peripherals and miscellaneous office furniture, including
    desks, chairs, filing cabinets and storage units, as well as the use of
    motor vehicles.

11. Miscellaneous.
    -------------
    Such other services as may be reasonably necessary from time to time in the
    operation of the Sub Business during the Term.

                                       12
<PAGE>

                                  SCHEDULE B
                                  ----------

                                 SUB SERVICES

1.   Payroll.
     -------

     Services to include preparation of payroll checks for Parent employees,
     maintenance of Parent employee payroll records, and any other ancillary
     payroll functions required.

2.   Accounting and Treasury.
     -----------------------

     Services to include assisting Parent's accounting department and auditors
     with general and specific accounting services, including, as applicable,
     preparation of financial and regulatory statements, filings with the
     Securities and Exchange Commission, such as Forms 10-K, 10-Q and 8-K, proxy
     statements and annual reports to stockholders, internal audit support
     services, and review of compliance with financial and accounting
     procedures.  Treasury services shall include assisting Parent in
     establishing bank accounts, managing cash accounts and currency exchange
     matters.

3.   Corporate Records.
     -----------------

     Services to include maintenance of corporate records and minute books,
     coordination with stock transfer agent, as applicable, administration of
     option plans and issuances and stock repurchase programs.

4.   Tax Preparation.
     ---------------

     Services include assisting Parent in the preparation and filing of all tax
     returns, including federal, state and local corporate income taxes, state
     franchise taxes, local property taxes, state and local withholding taxes,
     all foreign taxes, value added tax returns, preparing for meetings with tax
     authorities and audits, and tax research and planning.

5.   Human Resources and Benefits Administration.
     -------------------------------------------

     Services include arranging and procuring general liability, property and
     casualty and other business insurance coverage, workers' compensation
     coverage, assistance with human resources functions, including maintaining
     personnel records, compliance with applicable laws and regulations
     regarding employees and labor in general, adoption of employee handbook and
     procedures for recruiting, hiring, promoting and terminating employees.

6.   Training.
     --------

     Services to include the provision and coordination of professional training
     for Parent's employees and consultants, including internal and external
     seminars and educational conferences and retreats.

                                       13
<PAGE>

7.   Risk Management.
     ---------------

     Services to include assisting Parent with minimizing exposure to
     liabilities and to maintain contacts with insurance brokers and carriers.

8.   Legal Services.
     --------------

     Services to include access to Sub's in-house counsel staff for legal advice
     and assistance in general corporate affairs and business transactions,
     compliance with regulatory matters (including, without limitation, matters
     in respect of federal and state securities laws), advice and services with
     respect to intellectual property matters, and coordinating contact and use
     of outside counsel.

9.   Information and Technology and other Administrative Support.
     -----------------------------------------------------------

     Services to include data processing and telecommunications assistance,
     secretarial and administrative assistance and support, graphics,
     photocopying and general office services.

10.  Personal Property and Vehicles.
     ------------------------------

     Services to include the use of telecommunications equipment, including
     voice and data transmission equipment, photocopying equipment, computer
     hardware and peripherals and miscellaneous office furniture, including
     desks, chairs, filing cabinets and storage units, as well as the use of
     motor vehicles.

11.  Miscellaneous.
     -------------
     Such other services as may be reasonably necessary from time to time in the
     operation of the Parent's business during the Term.

                                       14<PAGE>

                                                                   Exhibit 10.14
                                                                   -------------

--------------------------------------------------------------------------------

                            STOCK PLEDGE AGREEMENT
                            ----------------------
                                  (DOMESTIC)

                          Dated as of April 25, 2000

                                    between

                            ARTHUR D. LITTLE, INC.

                                      and

                              CITICORP USA, INC.
                             (as Collateral Agent)

--------------------------------------------------------------------------------
<PAGE>

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                            Page
<S>                                                                         <C>
1.   Pledge of Stock, etc.................................................    2
     1.1  Pledge of Stock.................................................    2
     1.2  Additional Stock................................................    2
     1.3  Pledge of Cash Collateral Account...............................    2

2.   Definitions..........................................................    2

3.   Security for Obligations.............................................    3

4.   Liquidation, Recapitalization, etc...................................    4
     4.1  Distributions Paid to Collateral Agent..........................    4
     4.2  Cash Collateral Account.........................................    4
     4.3  Company's Rights to Cash Collateral, etc........................    4

5.   Warranty of Title: Authority.........................................    4

6.   Dividends, Voting. etc., Prior to Maturity...........................    5

7.   Remedies.............................................................    5
     7.1  In General......................................................    5
     7.2  Sale of Stock Collateral........................................    6
     7.3  Registration of Stock...........................................    7
     7.4  Private Sales...................................................    7
     7.5  Company's Agreements, etc.......................................    8

8.   Release of Pledged Stock and Stock Collateral........................    8

9.   Marshalling..........................................................    8

10.    Company's Obligations Not Affected.................................    9

11.    Transfer, etc., by Company.........................................    9

12.    Further Assurances.................................................    9

13.    Collateral Agent's Exoneration.....................................    9

14.    Indemnity and Expenses.............................................   10

15.    No Waiver, etc.....................................................   10
</TABLE>

                                      (i)
<PAGE>

<TABLE>
<CAPTION>
                                                                     Page
                                                                     ----
<S>                                                                  <C>
16.  Notice.......................................................... 10

17.  Termination..................................................... 11

18.  Overdue Amounts................................................. 11

19.  Governing Law; Consent to Jurisdiction.......................... 11

20.  Waiver of Jury Trial............................................ 11

21.  Miscellaneous................................................... 12
</TABLE>

                                      (ii)
<PAGE>

                            STOCK PLEDGE AGREEMENT
                            ----------------------

     This STOCK PLEDGE AGREEMENT ("Agreement") is made as of April 25, 2000, by
and between Arthur D. Little, Inc., a Massachusetts corporation (the "Company"),
and Citicorp USA, Inc., as collateral agent under a certain Intercreditor and
Collateral Agency Agreement dated as of April 25, 2000 (as may be amended, the
"Intercreditor Agreement") (hereinafter, in such capacity, the "Collateral
Agent") for Citibank, N.A., as agent (the "Bank Agent") and The Chase Manhattan
Bank (along with Citibank N.A., when acting in its individual capacity and the
Bank Agent hereinafter, collectively, the "Banks"), said Banks being parties to
a certain Amended and Restated Credit Agreement dated as of April 25, 2000 (the
"Credit Agreement"), and also as Collateral Agent on behalf of the holders
identified on Schedule 1 and the other holders from time to time (the
              ----------
"Noteholders") of notes (the "Notes") issued pursuant to that certain Amended
and Restated Note Purchase Agreement dated as of April 25, 2000 ("Note Purchase
Agreement"), among the Noteholders and the Company.

     WHEREAS, the Company is the direct legal and beneficial owner of (a) forty-
five percent (45%) of the issued and outstanding shares of each class of the
capital stock of EPYX Corporation, a Delaware corporation ("EPYX") and (b) all
of the issued and outstanding shares of each class of the capital stock of each
of the other corporations described on Annex A; and
                                       -------

     WHEREAS, the Company is in default with respect to certain covenants
contained in those certain Note Purchase Agreements dated as of December 17,
1996, between the Company and each of the Noteholders (collectively, the
"Existing Note Purchase Agreement"); and

     WHEREAS, the Company and Arthur D. Little International, Inc., a
Massachusetts corporation ("ADLI"), are in default with respect to certain
covenants contained in that certain Credit Agreement dated as of June 22, 1998,
among the Company, ADLI, the Bank Agent and the Banks (the "Existing Credit
Agreement," and collectively with the Existing Note Purchase Agreement, the
"Existing Agreements"); and

     WHEREAS, it is a condition precedent to the waiver of the existing defaults
by the Noteholders and Banks (collectively referred to herein as the "Pledge
Beneficiaries") under the Existing Agreements that the Company execute and
deliver to the Collateral Agent, for the benefit of the Pledge Beneficiaries, a
pledge agreement in substantially the form hereof; and

     WHEREAS, the Pledge Beneficiaries and the Collateral Agent have entered
into the Intercreditor Agreement; and

     WHEREAS, the Company wishes to grant security interests in favor of the
Collateral Agent, for the benefit of the Pledge Beneficiaries, as herein
provided;

     NOW, THEREFORE, in consideration of the premises contained herein and for
other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, the parties hereto agree as follows:
<PAGE>

     1.   Pledge of Stock, etc.
          --------------------

          1.1  Pledge of Stock.  The Company hereby pledges, assigns, grants a
               ---------------
security interest in, and delivers to the Collateral Agent, for the benefit of
the Pledge Beneficiaries, (i) 45% of all of the shares of the capital stock of
EPYX, (ii) all of the shares of capital stock of each of the subsidiaries listed
on Annex A hereto (individually referred to herein as a "Pledged Subsidiary" and
   -------
collectively as the "Pledged Subsidiaries") of every class, as more fully
described on such Annex A, and (iii) subject to Section 6 hereof all proceeds,
                  -------
dividends, distributions and other income attributable thereto to be held by the
Collateral Agent, for the benefit of the Pledge Beneficiaries, subject to the
terms and conditions hereinafter set forth.  The certificates for such shares,
accompanied by stock powers or other appropriate instruments of assignment
thereof duly executed in blank by the Company, have been delivered to the
Collateral Agent.

          1.2  Additional Stock.  In case the Company shall acquire any
               ----------------
additional shares of the capital stock of EPYX or any Pledged Subsidiary or
corporation which is the successor of EPYX or any Pledged Subsidiary, or any
securities exchangeable for or convertible into shares of such capital stock of
any class of EPYX or any Pledged Subsidiary, by purchase, stock dividend, stock
split or otherwise, such additional shares shall automatically become subject to
the lien created by this agreement, and the Company shall forthwith deliver to
and pledge such shares or other securities to the Collateral Agent, for the
benefit of the Pledge Beneficiaries under this Agreement and shall deliver to
the Collateral Agent forthwith any certificates therefor, accompanied by stock
powers or other appropriate instruments of assignment duly executed by the
Company in blank.  The Company agrees that the Collateral Agent may from time to
time attach as Annex A hereto an updated list of the shares of capital stock or
securities at the time pledged with the Collateral Agent hereunder.

          1.3  Pledge of Cash Collateral Account.  The Company also hereby
               ---------------------------------
pledges, assigns, grants a security interest in, and delivers to the Collateral
Agent, for the benefit of the Pledge Beneficiaries, the Cash Collateral Account
and all of the Cash Collateral as such terms are hereinafter defined.

     2.   Definitions.  All capitalized terms used herein and not elsewhere
          -----------
defined shall have the following meanings:

          Business Day.  Any day other than a Saturday, a Sunday or a day on
          ------------
which commercial banks in New York, New York are required or authorized to be
closed.

          Cash Collateral.  See (S)4.
          ---------------

          Cash Collateral Account. See (S)4.
          -----------------------

          Default.  An event or condition the occurrence or existence of which
          -------
would, with the lapse of time or the giving of notice or both, become an Event
of Default.

                                       2
<PAGE>

          DeNora.  DeNora Fuel Cells S.p.A., a company organized under the laws
          ------
of Italy.

          EPYX.  EPYX Corporation, a Delaware corporation (to be renamed Nuvera
          ----
Corporation).

          EPYX Agreements.  Collectively, (i) The Investment and Exchange
          ---------------
Agreement dated as of April 4, 2000, by and among DeNora, DeNora New Energy
Investments, B.V., a company established under the laws of The Netherlands, the
Company and EPYX and (ii) the Investment Agreement dated as of March 30, 2000,
by and among Amerada Hess Corporation, a Delaware corporation, the Company and
EPYX.

          Event of Default.  An Event of Default as defined in either the Note
          ----------------
Purchase Agreement or the Credit Agreement.

          Pledged Subsidiaries.  The corporations listed on Annex A hereto
          --------------------
(other than EPYX).

          Secured Obligations.  See (S)3.
          -------------------

          Stock.  Includes all the shares of stock described in Annex A attached
          -----
hereto and any additional, shares of stock at the time pledged with the
Collateral Agent hereunder, except for those shares that have been released
pursuant to (S)8.

          Stock Collateral.  The property at any time pledged to the Collateral
          ----------------
Agent hereunder (whether described herein or not) and all income therefrom,
including dividends, increases therein and proceeds thereof, including without
limitation any sums included in Cash Collateral, excluding, however, (i) any
income, increases or proceeds received by the Company to the extent expressly
permitted by (S)6 and (ii) property or any income, increases or proceeds related
thereto that have been released pursuant to (S)8.

          Time Deposits.  See (S)4.
          -------------

          UCC.  The Uniform Commercial Code as in effect from time to time in
          ---
the State of New York.

     3.   Security for Obligations.  This Agreement and the security interest
          ------------------------
granted hereunder are made with, and granted to, the Collateral Agent for the
benefit of the Pledge Beneficiaries as security for the payment and performance
in full of all (i) the Company's obligations under the Notes and the Note
Purchase Agreement (the "Senior Note Indebtedness"), and (ii) the obligations of
the Company and ADLI under the Credit Agreement and notes and any other
documents executed in connection therewith (the "Bank Lender Indebtedness" and,
together with the Senior Note Indebtedness, the "Secured Obligations").

                                       3
<PAGE>

     4.   Liquidation, Recapitalization, etc.
          ----------------------------------

          4.1  Distributions Paid to Collateral Agent. Any sums or other
               --------------------------------------
property paid or distributed upon or with respect to any of the Stock, whether
by dividend, redemption, stock split or upon the liquidation or dissolution of
the issuer thereof or otherwise, shall, except to the limited extent provided in
(S)6, be paid over and delivered to the Collateral Agent to be held by the
Collateral Agent, for the benefit of the Pledge Beneficiaries, as security for
the payment and performance in full of all of the Secured Obligations.  In case,
pursuant to the recapitalization or reclassification of the capital of the
issuer thereof or pursuant to the reorganization thereof, any distribution of
capital shall be made on or in respect of any of the Stock or any property shall
be distributed upon or with respect to any of the Stock, the property so
distributed shall be delivered to the Collateral Agent, for the benefit of the
Pledge Beneficiaries, to be held by it as security for the Secured Obligations.
Except to the limited extent provided in (S)6, all sums of money and property
paid or distributed in respect of the Stock, whether as a dividend or upon such
a liquidation, dissolution, recapitalization or reclassification or otherwise,
that are received by the Company shall, until paid or delivered to the
Collateral Agent, be held in trust for the Collateral Agent, for the benefit of
the Pledge Beneficiaries, as security for the payment and performance in full of
all of the Secured Obligations.

          4.2  Cash Collateral Account.  All sums of money that are delivered to
               -----------------------
the Collateral Agent pursuant to this (S)4 shall be deposited into an interest-
bearing account with the Collateral Agent (the "Cash Collateral Account").  Some
or all of the funds from time to time in the Cash Collateral Account may be
invested in time deposits, including, without limitation, certificates of
deposit issued by the Collateral Agent (such certificates of deposit or other
time deposits being hereinafter referred to, collectively, as "Time Deposits"),
that are satisfactory to the Collateral Agent after consultation with the
Company, provided, that, in each such case, arrangements satisfactory to the
         --------
Collateral Agent are made and are in place to perfect and to insure the first
priority of the Collateral Agent's security interest therein.  Interest earned
on the Cash Collateral Account and on the Time Deposits, and the principal of
the Time Deposits at maturity that is not invested in new Time Deposits, shall
be deposited in the Cash Collateral Account.  The Cash Collateral Account, all
sums from time to time standing to the credit of the Cash Collateral Account,
any and all Time Deposits, any and all instruments or other writings evidencing
Time Deposits and any and all proceeds or any thereof are hereinafter referred
to as the "Cash Collateral."

          4.3  Company's Rights to Cash Collateral, etc.  Except as otherwise
               ----------------------------------------
expressly provided in (S)17, the Company shall have no right to withdraw sums
from the Cash Collateral Account, to receive any of the Cash Collateral or to
require the Collateral Agent to part with the Collateral Agent's possession of
any instruments or other writings evidencing any Time Deposits.

     5.   Warranty of Title:  Authority.  The Company hereby represents and
          -----------------------------
warrants that: (i) the Company has good and marketable title to, and is the sole
record and beneficial owner of, the Stock, subject to no pledges, liens,
security interests, charges, options, restrictions or other encumbrances except
as contemplated by the EPYX Agreements and the pledge and security

                                       4
<PAGE>

interest created by this Agreement, (ii) all of the Stock described in (S)1 is
validly issued, fully paid and non-assessable, (iii) the Company has full power,
authority and legal right to execute, deliver and perform its obligations under
this Agreement and to pledge and grant a security interest in all of the Stock
Collateral pursuant to this Agreement, and the execution, delivery and
performance hereof and the pledge of and granting of a security interest in the
Stock Collateral hereunder have been duly authorized by all necessary corporate
or other action and do not contravene any law, rule or regulation or any
provision of the Company's charter documents or by-laws or of any judgment,
decree or order of any tribunal or of any agreement or instrument to which the
Company is a party or by which it or any of its property is bound or affected or
constitute a default thereunder, and (iv) the information set forth in Annex A
                                                                       -------
hereto relating to the Stock is true, correct and complete in all respects.  The
Company covenants that it will defend the rights of the Pledge Beneficiaries and
security interest of the Collateral Agent, for the benefit of the Pledge
Beneficiaries, in such Stock against the claims and demands of all other persons
whomsoever.  The Company further covenants that it will have the like title to
and right to pledge and grant a security interest in the Stock Collateral
hereafter pledged or in which a security interest is granted to the Collateral
Agent hereunder and will likewise defend the rights, pledge and security
interest thereof and therein of the Pledge Beneficiaries.

     6.   Dividends, Voting. etc., Prior to Maturity.  So long as no Event of
          ------------------------------------------
Default shall exist, the Company shall be entitled to receive all cash dividends
paid in respect of the Stock, to vote the Stock and to give consents, waivers
and ratifications in respect of the Stock; provided, however, that no vote shall
                                           --------  -------
be cast, or consent, waiver or ratification given, by the Company if the effect
thereof would in the reasonable judgment of the Collateral Agent impair any of
the Stock Collateral or be inconsistent with or result in any violation of any
of the provisions of the Credit Agreement, the Note Purchase Agreement, the
Intercreditor Agreement or any document executed in connection therewith.  All
such rights of the Company to receive cash dividends shall cease in case an
Event of Default shall exist.  All such rights of the Company to vote and give
consents, waivers and ratifications with respect to the Stock shall, at the
Collateral Agent's option, as evidenced by the Collateral Agent's notifying the
Company of such election, cease in case an Event of Default shall exist.

     7.   Remedies.
          --------

          7.1  In General.  If an Event of Default shall exist, the Collateral
               ----------
Agent shall have the following rights and remedies (to the extent permitted by
applicable law) in addition to the rights and remedies of a secured party under
the UCC, all such rights and remedies being cumulative, not exclusive, and
enforceable alternatively, successively or concurrently, at such time or times
as the Collateral Agent deems expedient:

               (a)  if the Collateral Agent so elects and gives notice of such
          election to the Company, the Collateral Agent may vote any or all
          shares of the Stock (whether or not the same shall have been
          transferred into its name or the name of its nominee or nominees) for
          any lawful purpose, including, without limitation, if the Collateral
          Agent so elects, for the liquidation of the assets of the issuer
          thereof, and give all consents, waivers and ratifications in respect
          of the Stock and

                                       5
<PAGE>

          otherwise act with respect thereto as though it were the outright
          owner thereof (the Company hereby irrevocably constituting and
          appointing the Collateral Agent the proxy and attorney-in-fact of the
          Company, with full power of substitution, to do so);

               (b)  the Collateral Agent may demand, sue for, collect or make
          any compromise or settlement the Collateral Agent deems suitable in
          respect of any Stock Collateral;

               (c)  the Collateral Agent may sell, resell, assign and deliver,
          or otherwise dispose of any or all of the Stock Collateral, for cash
          or credit or both and upon such terms at such place or places, at such
          time or times and to such entities or other persons as the Collateral
          Agent thinks expedient, all without demand for performance by the
          Company or any notice or advertisement whatsoever except as expressly
          provided herein or as may otherwise be required by law;

               (d)  the Collateral Agent may cause all or any part of the Stock
          held by it to be transferred into its name or the name of its nominee
          or nominees; and

               (e)  the Collateral Agent may set off against the Secured
          Obligations any and all sums deposited with it or held by it,
          including without limitation, any sums standing to the credit of the
          Cash Collateral Account and any Time Deposits issued by the Collateral
          Agent.

          7.2  Sale of Stock Collateral.  In the event of any disposition of the
               ------------------------
Stock Collateral as provided in clause (c) of (S)7.1, the Collateral Agent shall
give to the Company at least ten Business Days prior written notice of the time
and place of any public sale of the Stock Collateral or of the time after which
any private sale or any other intended disposition is to be made. The Company
hereby acknowledges that ten Business Days prior written notice of such sale or
sales shall be reasonable notice. The Collateral Agent may enforce its rights
hereunder without any other notice and without compliance with any other
condition precedent now or hereunder imposed by statute, rule of law or
otherwise (all of which are hereby expressly waived by the Company, to the
fullest extent permitted by law). The Collateral Agent may apply the cash
proceeds actually received from any sale or other disposition to the reasonable
expenses of retaking, holding, preparing for sale, selling and the like, to
reasonable attorneys' fees, travel and all other expenses which may be incurred
by the Collateral Agent in attempting to collect the Secured Obligations or to
enforce this Agreement or in the prosecution or defense of any action or
proceeding related to the subject matter of this Agreement, and then to the
Secured Obligations in the order set forth in the Intercreditor Agreement. Only
after such applications, and after payment by the Collateral Agent of any amount
required by (S)9-504(l)(c) of the UCC, need the Collateral Agent account to the
Company for any surplus. To the extent that any of the Secured Obligations are
to be paid or performed by a person other than the Company, the Company waives
and agrees not to assert any rights or privileges which it may have under (S)9-
112 of the UCC.

                                       6
<PAGE>

          7.3  Registration of Stock.  If the Collateral Agent shall determine
               ---------------------
to exercise its right to sell any or all of the Stock pursuant to this (S)7, and
if in the opinion of counsel for the Collateral Agent it is necessary, or if in
the reasonable opinion of the Collateral Agent it is advisable, to have the
Stock, or that portion thereof to be sold, registered under the provisions of
the Securities Act of 1933, as amended (the "Securities Act"), the Company
agrees to use its best efforts to cause the issuer or issuers of the Stock
contemplated to be sold to execute and deliver, and cause the directors and
officers of such issuer to execute and deliver, all at the Company's expense,
all such instruments and documents, and to do or cause to be done all such other
acts and things as may be necessary or, in the reasonable opinion of the
Collateral Agent, advisable to register such Stock under the provisions of the
Securities Act and to cause the registration statement relating thereto to
become effective and to remain effective for a period of 9 months from the date
such registration statement becomes effective, and to make all amendments
thereto or to the related prospectus or both that, in the reasonable opinion of
the Collateral Agent, are necessary or advisable, all in conformity with the
requirements of the Securities Act and the rules and regulations of the
Securities and Exchange Commission applicable thereto.  The Company agrees to
use its best efforts to cause such issuer or issuers to comply with the
provisions of the securities or "Blue Sky" laws of any jurisdiction which the
Collateral Agent shall designate and to cause such issuer or issuers to make
available to its security holders, as soon as practicable, an earnings statement
(which need not be audited) which will satisfy the provisions of Section 11 (a)
of the Securities Act.

          7.4  Private Sales.  The Company recognizes that the Collateral Agent
               -------------
may be unable to effect a public sale of the Stock by reason of certain
prohibitions contained in the Securities Act, federal banking laws, and other
applicable laws, but may be compelled to resort to one or more private sales
thereof to a restricted group of purchasers.  The Company agrees that any such
private sales may be at prices and other terms less favorable to the seller than
if sold at public sales and that such private sales shall not by reason thereof
be deemed not to have been made in a commercially reasonable manner.  The
Collateral Agent shall be under no obligation to delay a sale of any of the
Stock for the period of time necessary to permit the issuer of such securities
to register such securities for public sale under the Securities Act, or such
other federal banking or other applicable laws, even if the issuer would agree
to do so.  Subject to the foregoing, the Collateral Agent agrees that any sale
of the Stock shall be made in a commercially reasonable manner, and the Company
agrees to use its best efforts to cause the issuer or issuers of the Stock
contemplated to be sold, to execute and deliver, and cause the directors and
officers of such issuer to execute and deliver, all at the Company's expense,
all such instruments and documents, and to do or cause to be done all such other
acts and things as may be necessary or, in the reasonable opinion of the
Collateral Agent, advisable to exempt such Stock from registration under the
provisions of the Securities Act, and to make all amendments to such instruments
and documents which, in the opinion of the Collateral Agent, are necessary or
advisable, an in conformity with the requirements of the Securities Act and the
rules and regulations of the Securities and Exchange Commission applicable
thereto.  The Company further agrees to use its best efforts to cause such
issuer or issuers to comply with the provisions of the securities or "Blue Sky"
laws of any jurisdiction which the Collateral Agent shall designate and, if
required, to cause such issuer or issuers to make available to its security
holders, as soon as practicable, an

                                       7
<PAGE>

earnings statement (which need not be audited) which will satisfy the provisions
of Section 11(a) of the Securities Act.

          7.5  Company's Agreements, etc.  The Company further agrees to do or
               -------------------------
cause to be done all such other acts and things as may be reasonably necessary
to make any sales of any portion or all of the Stock pursuant to this (S)7 valid
and binding and in compliance with any and all applicable laws (including,
without limitation, the Securities Act, the Securities Exchange Act of 1934, as
amended, the rules and regulations of the Securities and Exchange Commission
applicable thereto and all applicable state securities or "Blue Sky" laws),
regulations, orders, writs, injunctions, decrees or awards of any and all
courts, arbitrators or governmental instrumentalities, domestic or foreign,
having jurisdiction over any such sale or sales, all at the Company's expense.
The Company further agrees that a breach of any of the covenants contained in
this (S)7 will cause irreparable injury to the Collateral Agent and the Pledge
Beneficiaries, that the Collateral Agent and the Pledge Beneficiaries have no
adequate remedy at law in respect of such breach and, as a consequence, agrees
that each and every covenant contained in this (S)7 shall be specifically
enforceable against the Company by the Collateral Agent and the Company hereby
waives and agrees not to assert any defenses against an action for specific
performance of such covenants.

     8.   Release of Pledged Stock and Stock Collateral.
          ---------------------------------------------

     The Collateral Agent shall release from the lien created by this Agreement
shares of the stock of EPYX purchased from time to time by DeNora and any other
equity investor in, or strategic partner of, EPYX upon receipt of satisfactory
evidence of payment of the purchase price therefor and compliance with the
provisions of the Credit Agreement and Note Purchase Agreement relating thereto.
After any such release the Collateral Agent shall deliver to the Company the
stock certificate held by it against tender by the Company of a new, duly
executed stock certificate evidencing the number of shares of EPYX remaining
subject to the pledge of this Agreement, and Annex A shall be amended to reflect
such release and exchange of certificates.

     9.   Marshalling.  Neither the Collateral Agent nor any Pledge Beneficiary
          -----------
shall be required to marshal any present or future collateral security for
(including but not limited to this Agreement and the Stock Collateral), or other
assurances of payment of, the Secured Obligations or any of them, or to resort
to such collateral security or other assurances of payment in any particular
order.  All of the Collateral Agent's rights hereunder and of the Pledge
Beneficiaries in respect of such collateral security and other assurances of
payment shall be cumulative and in addition to all other rights, however
existing or arising.  To the extent that it lawfully may, the Company hereby
agrees that it will not invoke any law relating to the marshalling of collateral
that might cause delay in or impede the enforcement of the Collateral Agent's
rights under this Agreement or under any other instrument evidencing any of the
Secured Obligations or under which any of the Secured Obligations is outstanding
or by which any of the Secured Obligations is secured or payment thereof is
otherwise assured, and to the extent that it lawfully may the Company hereby
irrevocably waives the benefits of all such laws.

                                       8
<PAGE>

     10.  Company's Obligations Not Affected.  The obligations of the Company
          ----------------------------------
hereunder shall remain in full, force and effect without regard to, and shall
not be impaired by (i) any exercise or nonexercise, or any waiver, by the
Collateral Agent or the Pledge Beneficiaries of any right, remedy, power or
privilege under or in respect of any of the Secured Obligations or any security
thereof (including this Agreement); (ii) any amendment to or modification of the
Credit Agreement, the Note Purchase Agreement, the Intercreditor Agreement, or
any document executed in connection therewith; or (iii) the taking of additional
security for, or any other assurances of payment of, any of the Secured
Obligations or the release or discharge or termination of any security or other
assurances of payment or performance for any of the Secured Obligations; whether
or not the Company shall have notice or knowledge of any of the foregoing.

     11.  Transfer, etc., by Company.  Without the prior written consent of the
          --------------------------
Collateral Agent, the Company will not sell, assign, transfer or otherwise
dispose of, grant any option with respect to, or pledge or grant any security
interest in or otherwise encumber or restrict any of the Stock Collateral or any
interest therein, except for (i) the pledge thereof and security interest
therein provided for in this Agreement and (ii) the transactions contemplated by
(S)8 hereof.

     12.  Further Assurances.  The Company will do all such acts, and will
          ------------------
furnish to the Collateral Agent all such financing statements, certificates,
legal opinions and other documents and will obtain all such governmental
consents and corporate approvals and will do or cause to be done all such other
things as the Collateral Agent may reasonably request from time to time in order
to give full effect to this Agreement and to secure the rights of the Collateral
Agent and Pledge Beneficiaries hereunder, all without any cost or expense to the
Collateral Agent or Pledge Beneficiaries.  If the Collateral Agent so elects, a
photocopy of this Agreement may at any time and from time to time be filed by
the Collateral Agent as a financing statement in any recording office in any
jurisdiction.

     13.  Collateral Agent's Exoneration.  Under no circumstances shall the
          ------------------------------
Collateral Agent be deemed to assume any responsibility for or obligation or
duty with respect to any part or all of the Stock Collateral of any nature,
other than to exercise reasonable care in the physical custody of the Stock
Collateral.  The Collateral Agent shall be deemed to have exercised reasonable
care in the custody and preservation of any Stock Collateral in its possession
if such Stock Collateral is accorded treatment substantially equal to that which
the Collateral Agent accords its own property.  Neither the Collateral Agent nor
any Pledge Beneficiary shall be required to take any action of any kind to
collect, preserve or protect its Or the Company's rights in the Stock Collateral
or against other parties thereto.  The Collateral Agent's prior recourse to any
part or all of the Stock Collateral shall not constitute a condition of any
demand, suit or proceeding for payment or collection of any of the Secured
Obligations.

     14.  Indemnity and Expenses.  The Company (i) agrees to indemnify, defend,
          ----------------------
save and hold harmless the Collateral Agent and each Pledge Beneficiary and each
of their Affiliates and their respective officers, directors, employees, agents
and advisors (each, an "Indemnified Party") from and against, and shall pay on
demand, any and all claims, damages, losses, liabilities and expenses
(including, without limitation, reasonable fees and expenses of counsel) that
may be incurred by or asserted or awarded against any Indemnified Party, in each
case arising out of or in

                                       9
<PAGE>

connection with or resulting from this Agreement (including, without limitation,
enforcement of this Agreement), except to the extent such claim, damage, loss,
liability or expense is found in a final, non-appealable judgment by a court of
competent jurisdiction to have resulted from such Indemnified Party's gross
negligence or willful misconduct and (ii) will upon demand pay to the Collateral
Agent the amount of any and all reasonable expenses, including, without
limitation, the reasonable fees and expenses of its counsel and of any experts
and agents that the Collateral Agent may incur in connection with (a) the
administration of this Agreement, (b) the custody preservation use or operation
of, or the sale of, collection from or other realization upon, any of the
Collateral of the Company, (c) the exercise or enforcement of any of the rights
of the Collateral Agent or the Pledge Beneficiaries hereunder or (d) the failure
by the Company to perform or observe any of the provisions hereof.

     15.  No Waiver, etc.  Neither this Agreement nor any term hereof may be
          --------------
changed, waived, discharged or terminated except by a written instrument
expressly referring to this Agreement and to the provisions so modified or
limited, and executed by the Collateral Agent, and the Company.  No act, failure
or delay by the Collateral Agent shall constitute a waiver of its rights and
remedies hereunder or otherwise.  No single or partial waiver by the Collateral
Agent of any default or right or remedy that it may have shall operate as a
waiver of any other default, right or remedy or of the same default, right or
remedy on a future occasion.  The Company hereby waives presentment, notice of
dishonor and protest of all instruments, included in or evidencing any of the
Secured Obligations or the Stock Collateral, and any and all other notices and
demands whatsoever (except as expressly provided herein, in the Credit Agreement
or in the Note Purchase Agreement).

     16.  Notice.  All notices and communications provided for hereunder shall
          ------
be in writing and sent (a) by telecopy if the sender on the same day sends a
confirming copy of such notice by a recognized overnight delivery service
(charges prepaid), or (b) by registered or certified mail with return receipt
requested (postage prepaid), or (c) by a recognized overnight delivery service
(with charges prepaid).  Any such notice must be sent:

                    (i)  if to the Collateral Agent, to it or such nominee at
          the address set forth below, or at such other address as it or such
          nominee shall have specified to the Company in writing in accordance
          with this (S) 16,

                         Citicorp USA, Inc.
                         399 Park Avenue
                         New York, NY 10043
                         Attention: New York Region Department
                         Fax No.: (212) 793-0642

                    (ii) if to the Company, to the Company at its address set
          forth below, or at such other address as the Company shall have
          specified to the Collateral Agent in writing in accordance with this
          (S) 16,

                                       10
<PAGE>

                         Arthur D. Little, Inc.
                         Acorn Park
                         Cambridge MA 02140-2390
                         Attention: Chief Financial Officer
                         Fax No.: (617) 498-7117

     Notices under this (S)16 will be deemed given only when actually received.

     17.  Termination.  Upon final payment and performance in full of the
          -----------
Secured Obligations, this Agreement shall terminate and the Collateral Agent
shall, at the Company's request and expense, return such Stock Collateral in the
possession or control of the Collateral Agent as has not theretofore been
disposed of pursuant to the provisions hereof, together with any moneys and
other property at the time held by the Collateral Agent hereunder.

     18.  Overdue Amounts.  Until paid, all amounts due and payable by the
          ---------------
Company hereunder shall be a debt secured by the Stock Collateral and shall
bear, whether before or after judgment, interest at the rate of twelve percent
(12%) per annum.

     19.  Governing Law; Consent to Jurisdiction.  THIS AGREEMENT IS INTENDED TO
          --------------------------------------
TAKE EFFECT AS A SEALED INSTRUMENT AND SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, EXCLUDING CHOICE OF LAW
PRINCIPLES OF SUCH STATE THAT WOULD REQUIRE THE APPLICATION OF THE LAWS OF A
JURISDICTION OTHER THAN NEW YORK. The Company agrees that any suit for the
enforcement of this Agreement may be brought in the courts of the State of New
York or any federal court sitting therein and consents to the non-exclusive
jurisdiction of such court and to service of process in any such suit being made
upon the Company by mail at the address specified in (S)16 hereof.  The Company
hereby waives any objection that it may now or hereafter have to the venue of
any such suit or any such court or that such suit is brought in an inconvenient
court.

     20.  Waiver of Jury Trial.  THE COMPANY WAIVES ITS RIGHT TO A JURY TRIAL
          --------------------
WITH RESPECT TO ANY ACTION OR CLAIM ARISING OUT OF ANY DISPUTE IN CONNECTION
WITH THIS AGREEMENT, ANY RIGHTS OR OBLIGATIONS HEREUNDER OR THE PERFORMANCE OF
ANY SUCH RIGHTS OR OBLIGATIONS. Except as prohibited by law, the Company waives
any right which it may have to claim or recover in any litigation referred to in
the preceding sentence any special, exemplary, punitive or consequential damages
or any damages other than, or in addition to, actual damages.  The Company (i)
certifies that neither the Collateral Agent, nor any Pledge Beneficiary, nor any
representative, agent or attorney of the Collateral Agent or any Pledge
Beneficiary has represented, expressly or otherwise, that the Collateral Agent
or any Pledge Beneficiary would not, in the event of litigation, seek to enforce
the foregoing waivers and (ii) acknowledges that, in entering into the Credit
Agreement, the Note Purchase Agreement, the Intercreditor Agreement and all
other documents executed in connection therewith, the Collateral Agent and the
Pledge Beneficiaries are relying upon, among other things, the waivers and
certifications contained in this (S)20.

                                       11
<PAGE>

     21.  Miscellaneous.  The headings of each section of this Agreement are for
          -------------
convenience only and shall not define or limit the provisions thereof.  This
Agreement and all rights and obligations hereunder shall be binding upon the
Company and its respective successors and assigns, and shall inure to the
benefit of the Collateral Agent, the Noteholders and the Banks and their
respective successors and assigns.  If any term of this Agreement shall be held
to be invalid, illegal or unenforceable, the validity of all other terms hereof
shall be in no way affected thereby, and this Agreement shall be construed and
be enforceable as if such invalid, illegal or unenforceable term had not been
included herein.  The Company acknowledges receipt of a copy of this Agreement.

                 [Remainder of page left blank intentionally.]

                                       12
<PAGE>

     IN WITNESS WHEREOF, intending to be legally bound, the Company and the
Agent have caused this Agreement to be executed as of the date first above
written.

                              CITICORP USA, INC., as Agent

                              By:_______________________________
                                 Name:
                                 Title:

                              ARTHUR D. LITTLE, INC.

                              By:_______________________________
                                 John F. Burns
                                 Senior Vice President and CFO

     The undersigned Pledged Subsidiaries and EPYX hereby join in the above
Agreement for the sole purpose of consenting to and being bound by the
provisions of (S)(S)4.1, 6 and 7 thereof, the undersigned hereby agreeing to
cooperate fully and in good faith with the Agent and the Company in carrying out
such provisions.

                              ACORN PROPERTIES II, INC.
                              ACORN PROPERTIES III, INC.
                              ACORN PROPERTIES IV, INC.
                              ACORN PROPERTIES VI, INC.
                              ARTHUR D. LITTLE REAL ESTATE CORPORATION
                              G&W SOFTWARE, INC.

                              By:_______________________________
                                 John F. Burns
                                 President and Treasurer
<PAGE>

                              ACORN PROFESSIONAL DEVELOPMENT, INC.
                              ADL NUTRACEUTICALS, INC.
                              ARTHUR D. LITTLE ENTERPRISES, INC.
                              ARTHUR D. LITTLE MANAGEMENT EDUCATION INSTITUTE,
                                INC.
                              ARTHUR D. LITTLE PROGRAM RESOURCES, INC.
                              EPYX CORPORATION
                              R. DIXON SPEAS ASSOCIATES, INC.

                              By:_________________________________________
                                 John F. Burns
                                 Treasurer

                              ARTHUR D. LITTLE INTERNATIONAL, INC.

                              By:_________________________________________
                                 John F. Burns
                                 Vice President

                              INNOVATION ASSOCIATES, INC.
                              PYXSYS CORPORATION

                              By:_________________________________________
                                 John F. Burns
                                 Vice President and Treasurer
<PAGE>

                              ARTHUR D. LITTLE VALUATION, INC.

                              By:_________________________________________
                                 John F. Burns
                                 President

                              ADL EUROPE, INC.

                              By:_________________________________________
                                 Frederick T. McElligott
                                 Treasurer

                              ARTHUR D. LITTLE SECURITIES INVESTMENT, INC.

                              By:_________________________________________
                                 Frederick T. McElligott
                                 President and Treasurer
<PAGE>

     The undersigned Pledged Subsidiaries hereby join in the above Agreement for
the sole purpose of consenting to and being bound by the provisions of (S(S)
4.1, 6 and 7 thereof, the undersigned hereby agreeing to cooperate fully and in
good faith with the Agent and the Company in carrying out such provisions.

                              ARTHUR D. LITTLE INTERNATIONAL GMBH

                              By:_________________________________________
                                 Name:
                                 Title:
<PAGE>

                     SCHEDULE 1 TO STOCK PLEDGE AGREEMENT
                     ------------------------------------

                                  NOTEHOLDERS
                                  -----------

Connecticut General Life Insurance Company

Connecticut General Life Insurance Company, on behalf of one or more separate
accounts

Life Insurance Company of North America

ACE Property and Casualty Insurance Company

The Lincoln National Life Insurance Company
<PAGE>

                       ANNEX A TO STOCK PLEDGE AGREEMENT
                       ---------------------------------

     None of the Pledged Subsidiaries has any authorized, issued or outstanding
shares of capital stock of any class, or any commitments to issue any shares of
its capital stock of any class or any securities convertible into or
exchangeable for any shares of its capital stock of any class, except as
otherwise stated in this Annex A.
                         -------

<TABLE>
<CAPTION>
                                                                                                   Stock
                                                        Record          Class of   Number of    Certificate
                Issuer                                  Owner            Shares      Shares          No.
                ------                                  -----            ------      ------          ---
<S>                                             <C>                     <C>        <C>          <C>
Acorn Professional Development, Inc.            Arthur D. Little, Inc.     Common        1,000        1
Acorn Properties II, Inc.                       Arthur D. Little, Inc.     Common          100        3
Acorn Properties III. Inc.                      Arthur D. Little. Inc.     Common           10        2
Acorn Properties IV, Inc.                       Arthur D. Little. Inc.     Common           10        2
Acorn Properties VI, Inc.                       Arthur D. Little, Inc.     Common          100        1
ADL Europe, Inc.                                Arthur D. Little, Inc.     Common          100        1
ADL Nutraceuticals, Inc.                        Arthur D. Little, Inc.     Common        1,000        1
Arthur D. Little Enterprises, Inc.              Arthur D. Little, Inc.     Common          100        1
Arthur D. Little International, Inc.            Arthur D. Little, Inc.     Common           10        1
Arthur D. little International, Inc.            Arthur D. Little, Inc.     Common        3,790        2
Arthur D. Little International, Inc.            Arthur D. Little, Inc.     Common          225        4
Arthur D. Little Management Education
   Institute, Inc.                              Arthur D. Little, Inc.     Common          100        1
Arthur D. Little Real Estate Corporation        Arthur D. Little, Inc.     Common        1,000        1
Arthur D. Little Real Estate Corporation        Arthur D. Little, Inc.     Common        1,000        2
Arthur D. Little Securities Investment, Inc.    Arthur D. Little, Inc.     Common          100        2
Arthur D. Little Valuation, Inc.                Arthur D. Little, Inc.     Common        2,500        1
EPYX Corporation                                Arthur D. Little, Inc.     Common      450,000        6
G&W Software, Inc.                              Arthur D. Little, Inc.     Common          100        1
Pyxsys Corporation                              Arthur D. Little, Inc.     Common        1,000        1
Innovation Associates, Inc.                     Arthur D. Little, Inc.     Common        1,000        1
Arthur D. Little Program Resources, Inc.        Arthur D. Little, Inc,     Common        1,000        1
R. Dixon Speas Associates, Inc.                 Arthur D. Little, Inc.     Common        1,000        1
</TABLE>
<PAGE>

                            DOMESTIC PLEDGED SHARES
                            -----------------------

                    -------------------------------------------------------
                    Acorn Professional Development, Inc.
                    -------------------------------------------------------
                    Acorn Properties II, Inc.
                    -------------------------------------------------------
                    Acorn Properties III, Inc.
                    -------------------------------------------------------
                    Acorn Properties IV, Inc.
                    -------------------------------------------------------
                    Acorn Properties VI, Inc.
                    -------------------------------------------------------
                    ADL Europe, Inc.
                    -------------------------------------------------------
                    ADL Nutraceuticals, Inc.
                    -------------------------------------------------------
                    Arthur D. Little Enterprises, Inc.
                    -------------------------------------------------------
                    Arthur D. Little International, Inc.
                    -------------------------------------------------------
                    Arthur D. Little Management Education Institute, Inc.
                    -------------------------------------------------------
                    Arthur D. Little Real Estate Corporation
                    -------------------------------------------------------
                    Arthur D. Little Securities Investment, Inc.
                    -------------------------------------------------------
                    Arthur D. Little Valuation, Inc.
                    -------------------------------------------------------
                    EPYX Corporation
                    -------------------------------------------------------
                    G & W Software, Inc.
                    -------------------------------------------------------
                    Pyxsys Corporation
                    -------------------------------------------------------
                    Arthur D. Little School of Management, Inc.
                    -------------------------------------------------------
                    Innovation Associates, Inc.
                    -------------------------------------------------------
                    Arthur D. Little Program Resources, Inc.
                    -------------------------------------------------------
                    R. Dixon Speqs Associates, Inc.
                    -------------------------------------------------------
                    Acorn Insurance Company, Ltd.
                    -------------------------------------------------------
                    ADL Overseas, Inc.
                    -------------------------------------------------------
                    Arthur D. Little CIS, Inc.
                    -------------------------------------------------------
                    Arthur D. Little India, Inc.
                    -------------------------------------------------------
                    Arthur D. Little Asia Pacific, Inc.
                    -------------------------------------------------------
                    Arthur D. Little Korea, Inc.
                    -------------------------------------------------------
                    Arthur D. Little Southeast Asia, Inc.
                    -------------------------------------------------------
                     c-quential, Inc.
                    -------------------------------------------------------
                    Arthur D. Little Ventures, LP.
                    -------------------------------------------------------
<PAGE>

                    -------------------------------------------------------
                    Enterprise Computer, Inc.
                    -------------------------------------------------------
                    SRT, Inc.
                    -------------------------------------------------------
                    Enterprise Medical Technologies, Inc.
                    -------------------------------------------------------
                    Strategic Food Solutions LLC (formerly known as
                    TNO/ADL LLC)
                    -------------------------------------------------------

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