Document:

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                                                                    EXHIBIT 10.9

                              PLAINS RESOURCES INC.
                          TRANSITION SERVICES AGREEMENT

                                 by and between

                              PLAINS RESOURCES INC.

                                       and

                  PLAINS EXPLORATION & PRODUCTION COMPANY, L.P.

                                   Dated as of
                                  July 3, 2002

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                          TRANSITION SERVICES AGREEMENT

                                TABLE OF CONTENTS

ARTICLE I. DEFINITIONS........................................................1

ARTICLE II. SERVICES PROVIDED BY SPINCO.......................................2
   Section 2.1    Provision of Services by Spinco.............................2
   Section 2.2    Services Performed by Others................................3

ARTICLE III. ADDITIONAL SERVICES..............................................3
   Section 3.1    Additional Services.........................................3
   Section 3.2    Required Additional Services................................4

ARTICLE IV. CHARGES AND PAYMENTS..............................................4
   Section 4.1    Charges for Services........................................4
   Section 4.2    Payment Terms...............................................4
   Section 4.3    Performance under Ancillary Agreements......................4

ARTICLE V. DISCLAIMER.........................................................4

ARTICLE VI. LICENSES AND PERMITS..............................................5

ARTICLE VII. INDEMNIFICATION..................................................5
   Section 7.1    Indemnification of Plains...................................5
   Section 7.2    Indemnification of Spinco...................................5
   Section 7.3    Third Party Claims..........................................5
   Section 7.4    Limitation of Liability.....................................5
   Section 7.5    Subrogation of Rights vis-a-vis Third Party Contractors.....6
   Section 7.6    Survival....................................................6

ARTICLE VIII. CONFIDENTIALITY.................................................6
   Section 8.1    Confidentiality.............................................6
   Section 8.2    Survival....................................................7

ARTICLE IX. TERM AND TERMINATION..............................................7
   Section 9.1    Term........................................................7
   Section 9.2    Termination Generally.......................................7
   Section 9.3    Termination of Less than all of the Services................7

ARTICLE X. RECORDS............................................................7

ARTICLE XI. DISPUTE RESOLUTION................................................7

ARTICLE XII. MISCELLANEOUS....................................................7
   Section 12.1   Entire Agreement............................................7
   Section 12.2   Governing Law...............................................7
   Section 12.3   Notices.....................................................8
   Section 12.4   Counterparts................................................8
   Section 12.5   Binding Effect; Assignment..................................8
   Section 12.6   Severability................................................8
   Section 12.7   Failure or Indulgence not Waiver; Remedies Cumulative.......8

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   Section 12.8   Waivers, Modifications, Amendments..........................8
   Section 12.9   Headings....................................................9
   Section 12.10  Relationship of Parties.....................................9
   Section 12.11  Provisions Unaffected.......................................9
   Section 12.12  No Third-Party Beneficiaries................................9
   Section 12.13  Rights of the Parties.......................................9
   Section 12.14  Taxes.......................................................9

                                       ii

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                          TRANSITION SERVICES AGREEMENT

     TRANSITION SERVICES AGREEMENT (this "Agreement"), dated as of July __,
2002, by and between Plains Resources Inc., a Delaware corporation ("Plains" and
along with Spinco, the "Parties"), and Plains Exploration & Production Company,
L.P., a California limited partnership ("Plains Exploration"). Undefined
capitalized terms herein are defined in the Separation Agreement (as defined
below).

                                    RECITALS

     WHEREAS, on the date hereof, Stocker Inc. owns a 2.5% general partner
interest in Plains Exploration and Plains owns a 97.5% limited partner interest
in Plains Exploration; and

     WHEREAS, the Parties currently contemplate that Plains Exploration will
(collectively, the "Conversion") (1) convert from a California limited
partnership to a Delaware limited partnership, and immediately thereafter (2)
convert from a Delaware limited partnership to a Delaware corporation (such
corporation, the "Converted Corporation"); and

     WHEREAS, the Board of Directors of Plains has determined that it is in the
best interests of Plains to separate Plains' existing businesses into two
independent business groups; and

     WHEREAS, to effectuate the foregoing, Plains and Spinco have entered into a
Master Separation Agreement, dated as of the date hereof (the "Separation
Agreement"), pursuant to which, among other things, Plains will transfer certain
assets to Spinco and Spinco will assume certain liabilities of Plains; and

     WHEREAS, in connection with the transfer of assets and assumption of
liabilities, on the date hereof, Plains and Spinco have entered into the
Employee Matters Agreement pursuant to which, among other things, Plains will on
a date in the future transfer substantially all of its employees to Spinco; and

     WHEREAS, upon such transfer of employees, it will be necessary for Spinco
to provide Plains the services described herein for the terms set forth in
Article IX.

     NOW, THEREFORE, in consideration of the foregoing and the covenants and
agreements set forth below, the parties hereto agree as follows:

                                   ARTICLE I.
                                   DEFINITIONS

     "Additional Services" is defined in Article III.

     "Agreement" is defined in the preamble to this Agreement.

     "Applicable Rate" means an annual rate of the prime rate as reported in the
Wall Street Journal plus two percent (2%) per annum.

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     "Conversion" is defined in the recitals to this Agreement.

     "Converted Corporation" is defined in the recitals to this Agreement.

     "Parties" is defined in the preamble to this Agreement.

     "Plains" is defined in the preamble to this Agreement.

     "Plains Exploration" is defined in the preamble to this Agreement.

     "Spinco Services" is defined in Section 2.1.

     "Sales Tax" is defined in Section 12.2(b).

     "Separation Agreement" is defined in the recitals to this Agreement.

     "Services" means, collectively, the Spinco Services and the Additional
Services.

     "Spinco" means, as the case may be, Plains Exploration or the Converted
Corporation.

                                   ARTICLE II.
                           SERVICES PROVIDED BY SPINCO

     Section 2.1 Provision of Services by Spinco. Except as otherwise provided
herein, during the applicable term determined pursuant to Section 9.1, Plains
hereby engages and retains Spinco to provide or otherwise make available to
Plains the services described in this Section 2.1 (collectively, the "Spinco
Services"), and Spinco hereby accepts and agrees to provide the Spinco Services
to Plains, for the term and consideration as specified herein. The fee payable
for the Spinco Services shall be determined in accordance with Article IV.

          Section 2.1.1 Tax Services. Spinco shall provide Plains with tax
     services as such services are requested, including: preparation of federal
     income tax returns; preparation of state and local tax returns (including
     income tax returns); property tax returns; preparation of financial
     statement disclosures and calculation of tax provisions for financial
     statement purposes; conducting negotiations with tax authorities as
     necessary; and providing tax research and planning and assistance with
     respect to federal, state and local audits initiated during the term of
     this Agreement. Upon termination of such tax services, Spinco shall provide
     to Plains copies of its records relating to federal, state and local tax
     returns filed by or on behalf of Plains, and all other correspondence and
     documentation reasonably required by Plains relating to payment of its
     taxes.

          Section 2.1.2 Accounting Services. Spinco shall provide Plains with
     accounting services as such services are requested, including: maintenance
     of Plains' and its Subsidiaries' general ledger and supporting accounting
     records; compiling financial statements for Plains and its Subsidiaries on
     a monthly, quarterly and annual basis; working with the Plains Auditors to
     complete the periodic audits and reviews of Plains'

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     financial statements; and providing other accounting services related to
     any required filings with the Commission pursuant to federal securities
     laws.

          Section 2.1.3 Payroll Services. Spinco shall provide Plains with
     payroll services as such services are requested, including: payment
     processing; Form W-2 preparation; assistance with any required regulatory
     compliance in connection with any payroll services provided pursuant to
     this Section 2.1.3; and distribution and maintenance of the Plains employee
     database. Upon termination of such payroll services, Spinco shall provide
     Plains with all payroll records for Plains employees.

          Section 2.1.4 Employee Benefits Services. Spinco shall provide
     administrative services with respect to the Plains employee benefit plans
     that cover Plains employees, including administering and maintaining such
     plans in the manner historically done by Plains. Upon termination of the
     administrative services provided under this Section 2.1.4, Spinco shall
     provide Plains with such information and records as are reasonably
     requested by Plains to enable it to administer the benefit plans in which
     its employees are enrolled.

          Section 2.1.5 Legal Services. Spinco shall provide Plains with legal
     services as such services are requested, including such legal services that
     are typical and customary to the operations and conduct of Plains
     businesses.

          Section 2.1.6 Financial Services. Spinco shall provide Plains with
     financial services as such services are requested, including: assisting
     Plains with respect to raising equity or debt capital and assisting Plains
     in preparing its budgets and forecasts; and executing hedges on behalf of,
     or for the benefit of, Plains' crude oil and natural gas production.

          Section 2.1.7 Services Not Provided. Spinco will not be required to
     provide any services to Plains that Plains provides for itself as of the
     commencement of the initial term set forth in Section 9.1.

     Section 2.2 Services Performed by Others. Spinco may cause any Spinco
Service required to be provided hereunder to be provided by another member of
the Spinco Group or by any other Person that is providing, or may from time to
time provide, the same or similar services for members of the Plains Group.
Spinco shall remain responsible in accordance with the terms of this Agreement
for performance of any Spinco Service it causes to be provided by others. Plains
may direct that any Spinco Service required to be provided hereunder be provided
for the benefit of another member of the Plains Group, but unless specified
herein, Plains shall be responsible for the payment of charges and other
performance required of such company with respect to such Spinco Service.

                                  ARTICLE III.
                               ADDITIONAL SERVICES

     Section 3.1 Additional Services. From time to time after the date hereof,
the Parties may identify additional services that Spinco should provide to
Plains in accordance with the

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terms of this Agreement (the "Additional Services"). The Parties shall create an
Exhibit for each Additional Service setting forth a description of the
Additional Service, the time period during which the Additional Service will be
provided, and any other terms applicable thereto and obtain the approval of each
Party's representative. Except as set forth in Section 3.2, the Parties may, but
shall not be required to, agree on Additional Services during the term of this
Agreement.

     Section 3.2 Required Additional Services. Except as set forth in the next
sentence, Spinco shall be obligated to perform any Additional Service that is
essential to effectuate an orderly transition unless such performance would
significantly disrupt the operations of Spinco or materially increase its
responsibility under this Agreement. If Spinco reasonably believes the
performance of Additional Services required above would significantly disrupt
its operations or materially increase the scope of its responsibility under this
Agreement, the Parties shall negotiate in good faith to establish terms under
which Spinco can provide such Additional Services, but Spinco shall not be
obligated to provide such Additional Services if, following good faith
negotiation, it is unable to reach agreement on such terms.

                                   ARTICLE IV.
                              CHARGES AND PAYMENTS

     Section 4.1 Charges for Services. Spinco will charge Plains, and Plains
will pay Spinco, for the costs incurred in providing the Services, including (A)
allocable salary and wages, incentives, paid absences, payroll taxes, payroll
additives (insurance premiums, social security, health care and retirement
benefits and the like) and similar expenses, (B) indirect costs of providing the
Services, including allocable charges for management, payroll, procurement,
legal, risk management, accounting, tax, audit, human resources, overhead and
the like, and similar expenses, and (C) reimbursement of out-of-pocket third
party costs and expenses.

     Section 4.2 Payment Terms. Spinco shall bill Plains monthly for all charges
pursuant to this Agreement and Plains shall pay Spinco for all Services within
30 days after receipt of an invoice therefor. Late payments shall bear interest
at an annual rate of the prime rate as reported in the Wall Street Journal on
the date such payment is due plus two percent (2%) per annum.

     Section 4.3 Performance under Ancillary Agreements. Notwithstanding
anything to the contrary contained herein, Plains shall not be charged under
this Agreement for any Services that are specifically required to be performed
under the Separation Agreement or any other Ancillary Agreement and any such
other services shall be performed and charged for in accordance with the terms
of the Separation Agreement or such other Ancillary Agreement.

                                   ARTICLE V.
                                   DISCLAIMER

     Spinco shall provide the Services with substantially the same degree of
care as it employs in making the same services available for its own operations;
provided, however, that Spinco shall not be liable to Plains or any other Person
for any loss, damage or expense that may result therefrom or from any change in
the manner in which Spinco renders such services, so long as Spinco deems such
change necessary or desirable in the conduct of its own operations. SPINCO
DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT

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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, WITH RESPECT TO THE SERVICES. SPINCO MAKES NO
REPRESENTATIONS OR WARRANTIES AS TO THE QUALITY, SUITABILITY OR ADEQUACY OF THE
SERVICES FOR ANY PURPOSE OR USE.

                                   ARTICLE VI.
                              LICENSES AND PERMITS

     Spinco warrants and covenants that all duties and obligations (including
all Services) to be performed hereunder shall be performed in compliance with
all material applicable federal, state, provincial and local laws, rules and
regulations. Spinco shall obtain and maintain all material permits, approvals
and licenses necessary or appropriate to perform its duties and obligations
(including all Services) hereunder and shall at all times comply with the terms
and conditions of such permits, approvals and licenses.

                                  ARTICLE VII.
                                 INDEMNIFICATION

     Section 7.1 Indemnification of Plains. Spinco and the other members of the
Spinco Group shall have no Liability to Plains and the other members of the
Plains Group with respect to their furnishing any of the Services hereunder
except for Liabilities arising out of or resulting from the gross negligence or
willful misconduct of Spinco occurring after the date hereof. Spinco will
indemnify, defend and hold harmless Plains and the other members of the Plains
Group in respect of all such Liabilities arising out of or resulting from such
gross negligence or willful misconduct. Such indemnification obligation shall be
a Liability of Spinco for purposes of the Separation Agreement, and the
provisions of Article III of the Separation Agreement with respect to
indemnification shall govern with respect thereto.

     Section 7.2 Indemnification of Spinco. Plains shall indemnify and hold
harmless Spinco and the other members of the Spinco Group in respect of all
Liabilities arising out of or resulting from Spinco's furnishing or failing to
furnish the Services provided for in this Agreement, other than Liabilities
arising out of or resulting from the gross negligence or willful misconduct of
Spinco or any of the other members of the Spinco Group. The provisions of this
indemnity shall apply only to Losses that relate directly to the provision of
Services. Such indemnification obligation shall be a Liability of Plains (and a
Spinco Excluded Liability) for purposes of the Separation Agreement and the
provisions of Article III of the Separation Agreement with respect to
indemnification shall govern with respect thereto.

     Section 7.3 Third Party Claims. Any third party claims resulting from or
arising out of or in connection with this Agreement or the performance of or
failure to perform the Services will be resolved according to the procedures set
forth in the Separation Agreement.

     Section 7.4 Limitation of Liability. IN NO EVENT SHALL PLAINS OR SPINCO, OR
ANY MEMBER OF THE PLAINS GROUP OR THE SPINCO GROUP OR THEIR RESPECTIVE
DIRECTORS, OFFICERS AND EMPLOYEES BE LIABLE TO PLAINS OR SPINCO, OR ANY OTHER
MEMBER OF THE PLAINS GROUP OR THE SPINCO GROUP FOR ANY SPECIAL, CONSEQUENTIAL,
INDIRECT, INCIDENTAL OR PUNITIVE

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DAMAGES OR LOST PROFITS, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY
(INCLUDING NEGLIGENCE) ARISING IN ANY WAY OUT OF THIS AGREEMENT, WHETHER OR NOT
SUCH PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES; PROVIDED,
HOWEVER, THAT THE FOREGOING LIMITATIONS SHALL NOT LIMIT EACH PARTY'S
INDEMNIFICATION OBLIGATIONS FOR LIABILITIES TO THIRD PARTIES AS SET FORTH IN THE
SEPARATION AGREEMENT OR ANY ANCILLARY AGREEMENT. THE INDEMNIFICATION PROVIDED IN
THIS ARTICLE VII WILL BE APPLICABLE WHETHER OR NOT THE SOLE, JOINT OR
CONTRIBUTING NEGLIGENCE OF THE INDEMNITEE IS ALLEGED OR PROVEN. THE PARTIES
AGREE THE PRECEDING SENTENCE IS COMMERCIALLY CONSPICUOUS.

     Section 7.5 Subrogation of Rights vis-a-vis Third Party Contractors. In the
event any Liability arises from the performance of Services hereunder by a third
party contractor, Plains shall be subrogated to such rights, if any, as Spinco
may have against such third party contractor with respect to the Services
provided by such third party contractor to or on behalf of Spinco. Subrogation
under this Section 7.5 shall not affect the obligation of Spinco to perform
Services under this Agreement.

     Section 7.6 Survival. The parties' obligations under this Article VII shall
survive the termination of this Agreement.

                                  ARTICLE VIII.
                                 CONFIDENTIALITY

     Section 8.1 Confidentiality.

               (a) Information Subject to Other Obligations. Plains and Spinco
     agree that all Information regarding the Services, including, but not
     limited to, price, costs and methods of operation, shall be maintained in
     confidence and shall be subject to Section 9.9 of the Separation Agreement.

               (b) Internal Use; Title, Copies, Return. Plains agrees that:

               (i) all systems, procedures and related materials provided to
          Plains by Spinco in connection herewith are for Plains' internal use
          only and only as related to the Services or any of the underlying
          systems used to provide the Services;

               (ii) title to all systems used in performing the Services
          provided hereunder shall remain in Spinco or its third party vendors;
          and

               (iii) upon the termination of any of the Services, Plains shall
          return to Spinco, as soon as practicable, any equipment or other
          property of Spinco relating to the Services that are owned or leased
          by it and are or were in Plains' possession or control.

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     Section 8.2 Survival. The Parties' obligations under this Article VIII
shall survive the termination of this Agreement.

                                   ARTICLE IX.
                              TERM AND TERMINATION

     Section 9.1 Term. Except as expressly provided in this Article IX, the
initial term of this Agreement shall commence on a date to be agreed upon in
writing by Plains and Spinco and continue for a period of 180 days thereafter;
provided, that the Parties may extend the term beyond the expiration of such 180
day period upon mutual consent of the Parties if they deem such extension to be
necessary or desirable.

     Section 9.2 Termination Generally. This Agreement may be terminated at any
time upon mutual consent by the Parties.

     Section 9.3 Termination of Less than all of the Services. In the event of
any termination with respect to one or more, but less than all, of the Services,
this Agreement shall continue in full force and effect with respect to any
Services not terminated hereby.

                                   ARTICLE X.
                                     RECORDS

     Each Party shall create and maintain full and accurate books and records in
connection with the provision of the Services, and all other records relevant to
this Agreement, and upon reasonable notice from the other Party shall make
available for inspection and copy by the other Party's agents such records
during reasonable business hours.

                                   ARTICLE XI.
                               DISPUTE RESOLUTION

     If a Dispute results from or arises out of or in connection with this
Agreement or the performance of, or failure to perform, the Services, the
Parties agree to use the procedures set forth in Article VIII of the Separation
Agreement, in lieu of other available remedies, to resolve the same.

                                  ARTICLE XII.
                                  MISCELLANEOUS

     Section 12.1 Entire Agreement. This Agreement, the Separation Agreement,
the other Ancillary Agreements and the Exhibits and Schedules referenced or
attached hereto and thereto, constitute the entire agreement between the Parties
with respect to the subject matter hereof and shall supersede all prior written
and oral and all contemporaneous oral agreements and understandings with respect
to the subject matter hereof.

     Section 12.2 Governing Law. This Agreement shall be governed by and
construed in accordance with the laws of the State of Texas without regard to
its principles of conflicts of law.

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     Section 12.3 Notices. Unless expressly provided herein, all notices,
claims, certificates, requests, demands and other communications hereunder shall
be in writing and shall be deemed to be duly given (i) when personally delivered
or (ii) if mailed registered or certified mail, postage prepaid, return receipt
requested, on the date the return receipt is executed or the letter refused by
the addressee or its agent or (iii) if sent by overnight courier which delivers
only upon the signed receipt of the addressee, on the date the receipt
acknowledgment is executed or refused by the addressee or its agent or (iv) if
sent by facsimile on the date confirmation of transmission is received (provided
that a copy of any notice delivered pursuant to this clause (iv) shall also be
sent pursuant to clause (ii) or (iii)), addressed to the attention of the
addressee's Chief Executive Officer at the address of its principal executive
office or to such other address or facsimile number for a party as it shall have
specified by like notice.

     Section 12.4 Counterparts. This Agreement may be executed in counterparts,
each of which shall be deemed to be an original but all of which shall
constitute one and the same agreement.

     Section 12.5 Binding Effect; Assignment. This Agreement shall inure to the
benefit of and be binding upon the Parties and their respective legal
representatives and successors and nothing in this Agreement, express or
implied, is intended to confer upon any other Person any rights or remedies of
any nature whatsoever under or by reason of this Agreement. This Agreement may
not be assigned by any Party without the prior written consent of the other
Party, which may be withheld for any or no reason.

     Section 12.6 Severability. The provisions of this Agreement will be deemed
severable and the invalidity or unenforceability of any provision will not
affect the validity or enforceability of the other provisions hereof; provided
that if any provision of this Agreement, as applied to any Party or to any
circumstance, is adjudged by a Governmental Authority, arbitrator, or mediator
not to be enforceable in accordance with its terms, the Parties agree that the
Governmental Authority, arbitrator or mediator making such determination will
have the power to modify the provision in a manner consistent with its
objectives such that it is enforceable, and/or to delete specific words or
phrases, and in its reduced form, such provision will then be enforceable and
will be enforced.

     Section 12.7 Failure or Indulgence not Waiver; Remedies Cumulative. No
failure or delay on the part of either Party in the exercise of any right
hereunder shall impair such right or be construed to be a waiver of, or
acquiescence in, any breach of any representation, warranty or agreement herein,
nor shall any single or partial exercise of any such right preclude other or
further exercise thereof or of any other right. All rights and remedies existing
under this Agreement are cumulative to, and not exclusive of, any rights or
remedies otherwise available.

     Section 12.8 Waivers, Modifications, Amendments. No provision of this
Agreement may be amended, modified or waived except in the manner set forth in
the Separation Agreement.

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     Section 12.9 Headings. The heading references herein are for convenience
purposes only, do not constitute a part of this Agreement and shall not be
deemed to limit or affect any of the provisions hereof.

     Section 12.10 Relationship of Parties. Nothing in this Agreement shall be
deemed or construed by the Parties or any third party as creating the
relationship of principal and agent, partnership or joint venture between the
Parties, and no provision contained herein, and no act of the Parties, shall be
deemed to create any relationship between the Parties other than the
relationship of independent contractor nor be deemed to vest any rights,
interests or claims in any third parties.

     Section 12.11 Provisions Unaffected. Nothing contained in this Agreement
shall affect the rights and obligations of Plains and Spinco under the
Separation Agreement.

     Section 12.12 No Third-Party Beneficiaries. This Agreement is solely for
the benefit of the parties hereto and should not be deemed to confer upon third
parties any remedy, claim, liability, reimbursement, claim of action or other
right in excess of those existing without reference to this Agreement.

     Section 12.13 Rights of the Parties. Nothing expressed or implied in this
Agreement is intended or will be construed to confer upon or give any Person,
other than the Parties and to the extent provided herein their respective
Subsidiaries, any rights or remedies under or by reason of this Agreement or any
transaction contemplated thereby.

     Section 12.14 Taxes.

               (a) General. Plains shall bear all taxes, duties and other
     similar charges (and any related interest and penalties), imposed as a
     result of its receipt of Services under this Agreement, including any tax
     that Plains is required to withhold or deduct from payments to Spinco,
     except any net income tax imposed upon Spinco by the country of its
     incorporation or any governmental entity within its country of
     incorporation.

               (b) Sales Tax Liability and Payment. Notwithstanding Section
     12.2(a), Plains is liable for and will indemnify and hold harmless Spinco
     from all sales, use and similar taxes (plus any penalties, fines or
     interest thereon) (collectively, "Sales Taxes") assessed, levied or imposed
     by any governmental or taxing authority on the providing of Services by
     Spinco to Plains. Spinco shall collect from Plains any Sales Tax that is
     due on the Service it provides to Plains and shall pay such Sales Tax so
     collected to the appropriate governmental or taxing authority.

                            [Signature Page Follows]

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

                                    PLAINS RESOURCES INC.

                                    By:     /s/ Jere C. Overdyke, Jr.
                                            ------------------------------------
                                    Name:   Jere C. Overdyke, Jr.
                                    Title:  Vice President and Treasurer

                                    PLAINS EXPLORATION & PRODUCTION
                                    COMPANY, L.P.

                                    By:     Stocker Resources, Inc.,
                                            its general partner

                                            By:     /s/ Jere C. Overdyke, Jr.
                                                    ----------------------------
                                            Name:   Jere C. Overdyke, Jr.
                                            Title:  Vice President and Treasurer

                                       10Exhibit 4.1

EXHIBIT 4.1

REGISTRATION RIGHTS AGREEMENT

        REGISTRATION RIGHTS AGREEMENT
dated as of February 14, 2002 (this "Agreement"), is by and between DLJ
Merchant Banking Partners II, L.P., a Delaware limited partnership, DLJMB
Funding II, Inc., a Delaware corporation, DLJ Merchant Banking Partners II-A,
L.P., a Delaware limited partnership, DLJ Diversified Partners, L.P., a Delaware
limited partnership, DLJ Diversified Partners-A, L.P., a Delaware limited
partnership, DLJ Millennium Partners, L.P., a Delaware limited partnership, DLJ
First ESC L.L.C., a Delaware limited liability company, DLJ Offshore Partners
II, C.V., a Netherlands Antilles limited partnership, DLJ EAB Partners, L.P., a
Delaware limited partnership, UK Investment Plan 1997 Partners, a Delaware
partnership (each a "DLJ Party" and collectively, the "DLJ Parties"),
and Wilson Greatbatch Technologies, Inc., a Delaware corporation (the "Company").

SECTION 1

DEFINITIONS

        1.1 Specific Definitions.
The following capitalized terms shall have the meanings ascribed to them in this
Section 1.1:

        "Act" shall mean the Securities
Act of 1933, as amended.

        "Affiliate" shall have the meaning
set forth in Rules 12b-2 under the Exchange Act.

        "Agreement" shall have the meaning set forth in the preamble hereto.

        "Commission" shall mean the Securities and Exchange Commission.

        "Common Stock" shall mean the Common Stock, par value $.001 per share, of the
Company.

        "Company" shall have the meaning set forth in the preamble hereto.

        "DLJ Party" and "DLJ Parties" shall have the meanings set forth in the
preamble hereto.

        "DLJ Partners II" shall mean DLJ Merchant Banking Partners II, L.P., a party
to this Agreement.

        "Exchange Act" shall mean the Securities Exchange Act of 1934, as amended.

        "Indemnified Party" shall have the meaning set forth in Section 7.3 .

        "Indemnifying Party" shall have the meaning set forth in Section 7.3.

        "Loss" or "Losses" shall have the meaning set forth in Section 7.1 .

        "Managing Underwriter" shall have the meaning set forth in Section 3.2.

        "Notice" shall have the meaning set forth in Section 10.8.

        "Person" shall mean any business entity (including, without limitation, a
corporation, partnership (limited or general), limited liability company or
business trust) or a natural person.

        "Piggyback Registration" shall have the meaning set forth in Section 3.1.

        "Piggyback Securities" shall have the meaning set forth in Section 3.3.

        "Prospectus" shall have the meaning set forth in Section 7.1.

        "register" "registered" and "registration" and words of similar import refer
to a registration effected by preparing and filing with the Commission a
registration statement in compliance with the Act, and the declaration and
ordering by the Commission of effectiveness of such registration statement or
document.

        "Registerable Common Stock" shall mean the Common Stock held by any of the
DLJ Parties but shall not include any shares of such Common Stock which have
previously been registered for sale, or which have been sold, to the public
either pursuant to a registration statement or Rule 144 under the Act.

        "Registration Expenses" shall have the meaning set forth in Section 5.2.

        "Selling Holder" shall mean a holder of Registerable Common Stock who is
selling Registerable Common Stock pursuant to a registration statement under the
Act and either Section 2.1 or Section 3.1.

       

Other Definitions. Other capitalized terms used herein but not defined in
Section 1.1 shall have the respective meanings ascribed to them
throughout this Agreement.

SECTION 2

DEMAND REGISTRATION RIGHTS

        2.1 Demand Registration Rights.

            (a) Upon receipt of written request by any of the DLJ Parties to
register all or part of the Registerable Common Stock for sale under the Act the
Company shall as expeditiously as reasonably possible (but in any event not
later than sixty (60) days after receipt of such request) prepare and file, and
use its best efforts to cause to become effective as soon as practicable, a
registration statement under the Act to effect the offering of such Registerable
Common Stock in the manner specified in such request (including, without
limitation, an underwritten offering or a continuous or delayed offering as
contemplated by Rule 415 under the Act).

            (b) If any DLJ Party shall so request with respect to its own
Registerable Common Stock, the Company shall take such actions as shall be
reasonably necessary or appropriate to permit any share of Registerable Common
Stock specified in such request to be offered and sold in compliance with the
securities laws and shall otherwise cooperate in a timely manner in such
offering.

            (c) Subject to the terms and conditions applicable to Piggyback
Registrations under Section 3.2, the DLJ Parties shall be entitled to
select and retain one or more investment bankers or managers in connection with
any underwritten offerings made pursuant to this Section 2.1, including
the Managing Underwriter.

            (d) Subject to the terms and conditions set forth in Section 2.2,
any DLJ Party may request the Company to register Registerable Common Stock
under the Act pursuant to this Section 2.1 at any time.

        2.2 Terms and Conditions of Demand Registration Rights.
Notwithstanding anything to the contrary contained elsewhere herein, the
registration rights granted to the DLJ Parties in Section 2.1 are
expressly subject to the following terms and conditions

            (a) The DLJ Parties, collectively, shall only be entitled to two (2)
requests to register Registerable Common Stock under the terms of Section 2.1.
The term "request" as it is used in this Section 2.2(a) shall mean the
registration and subsequent sale of Registerable Common Stock.

            (b) In no event shall the Registerable Common Stock offered under a
registration statement prepared and filed pursuant to Section 2.1
constitute less than three percent (3%) of the then outstanding shares of Common
Stock.

            (c) The DLJ Parties shall not exercise its rights pursuant to 
Section 2.1 during the 60-day period immediately following the effective
date of any registration statement filed by the Company in respect of an
offering or sale of securities of the Company by or on behalf of the Company or
any other stockholder of the Company. In addition, the Company may delay the
filing or effectiveness of the registration statement for a period of up to 90
days after the date of a request for registration pursuant to this Section 2 if
at the time of such request (i) the Company is engaged, or has fixed plans to
engage within 90 days of the time of such request, in a firm commitment
underwritten public offering of Common Stock in which the holders of
Registerable Common Stock may include Registerable Common Stock pursuant to
Section 3 or (ii) the Company reasonably determines that such registration and
offering would interfere with any material transaction involving the Company; 
provided, however, that the Company may only delay the filing or
effectiveness of a registration statement pursuant to this Section 2(c) one-time
in any 365-day period measured from the date of the request for registration
that is subsequently delayed pursuant to this Section 2(c).

            (d) The DLJ Parties acknowledge and agree that, subject to the
underwriters' right to exclude any such Common Stock for marketing reasons in an
underwriting offering, the Company may, in connection with any registration
statement filed pursuant to Section 2.1, include Common Stock for sale by
the Company and/or any stockholder of the Company, whether the offering for
which the registration statement is filed is underwritten or not.

SECTION 3

PIGGYBACK REGISTRATION RIGHTS

        3.1 Notice; Piggyback Registration. Subject to the provisions
of this Agreement, if the Company proposes to file a registration statement
under the Act with respect to an offering of any equity securities by the
Company for its own account or for the account of any of its equity holders
(other than a registration statement on Form S-4 or Form S-8, or any substitute
form that may be adopted by the Commission, or any registration statement filed
in connection with an exchange offer or offering of securities solely to the
Company's existing security holders), then the Company shall give written notice
of such proposed filing to the DLJ Parties as soon as practicable (but in no
event less than thirty (30) days before the anticipated effective date of such
registration statement), and such notice shall offer such Persons the
opportunity to register such number of Registerable Common Stock as each such
Person may request (a "Piggyback Registration"). Subject to Sections
3.2, 3.3, 3.4, 3.5 and 3.6 hereof, the Company
shall include in each such Piggyback Registration all Registerable Common Stock
requested to be included in the registration for such offering. Subject to the
terms of any custody agreement, power of attorney or similar agreement entered
into by the holder of Registerable Common Stock, each such holder of
Registerable Common Stock shall be permitted to withdraw all or part of such
holder's Registerable Common Stock from a Piggyback Registration at any time
prior to the effective date thereof. The DLJ Parties acknowledge and agree that,
subject to Section 3.3, the Company may include the Piggyback Securities
of other stockholders of the Company in any Piggyback Registration.

        3.2 Selection of Underwriters. DLJ Partners II shall, for a
period of thirty (30) days after the receipt by DLJ Partners II of Notice of a
Piggyback Registration, have the right, but not the obligation, to designate, in
its sole and absolute discretion, the book-running managing underwriter with
respect to the Piggyback Registration (the "Managing Underwriter") and
shall, in consultation with the Company, select such additional underwriters to
be used in connection with the offering, if any, unless, at the time the Company
takes the necessary corporate action to approve the filing of the registration
statement, the DLJ Parties and their affiliates collectively do not beneficially
own at least five percent (5%) of the Common Stock. In the event that DLJ
Partners II exercises such right by notifying the Company thereof, DLJ Partners
II shall select, upon consultation with the Company, one or more co-managers for
each such offering if DLJ Partners II, in its sole discretion, shall determine
that any be necessary, and the underwriting fees related to any such offering
shall be allocated among any such co-managers in such proportions as DLJ
Partners II shall determine. The Managing Underwriter's compensation for such
services will be at market rates subject to the type and size of the offering.
In the event of any such offering, the Managing Underwriter and the Company will
enter into an agreement appropriate to the circumstances, containing provisions
for, among other things, compensation, indemnification, contribution, and
representations and warranties, which are usual and customary for similar
agreements entered into by the Managing Underwriter or other investment bankers
of national standing acting in similar transactions. The Managing Underwriter
shall have no obligation to act as underwriter or dealer-manager to the Company
or to purchase any securities of the Company, except to the extent that such
obligations arise out of an underwriting agreement or dealer-manager agreement,
as the case may be, with respect to a particular offering executed and delivered
by both the Managing Underwriter and the Company. In the event that the DLJ
Parties and their affiliates collectively do not beneficially own at least five
percent (5%) of the Common Stock at the time the Company takes the necessary
corporate action to approve the filing of the registration statement, or DLJ
Partners II does not exercise such right within such thirty (30) day period by
notifying the Company thereof, the Company shall select the book-running
managing underwriter and such additional underwriters to be used in connection
with the offering.

        3.3 Underwriters' Cut-Backs. The Company shall use all
commercially reasonable efforts to cause the Managing Underwriter or any other
managing underwriter of a proposed underwritten offering, as the case may be, to
permit the Registerable Common Stock requested to be included in the
registration statement for such offering under Section 3.1 or pursuant to
other piggyback registration rights, if any, granted by the Company ("Piggyback
Securities") to be included on the same terms and conditions as any similar
securities included therein. Notwithstanding the foregoing, the Company shall
not be required to include any DLJ Party's Piggyback Securities in such offering
unless such DLJ Party accepts the terms of the underwriting agreement between
the Company and the Managing Underwriter (or other managing underwriter) or
underwriters, and otherwise complies with the provisions of Section 3.4
below. If the managing underwriter or underwriters of a proposed underwritten
offering advise the Company in writing that in their opinion the total amount of
securities, including Piggyback Securities, to be included in such offering is
sufficiently large to potentially impede or interfere with the offering, then in
such event the securities to be included in such offering shall be allocated
first to the Company and then, to the extent that any additional securities can,
in the opinion of such managing underwriter or underwriters, be sold without any
such potential to impede or interfere with the offering, pro rata among the
holders of Piggyback Securities on the basis of the number of Registerable
Common Stock requested to be included in such registration by each such holder.

        3.4 Participation. No DLJ Party may participate in any
underwritten registration under this Section 3 unless such DLJ Party (a)
agrees to sell such DLJ Party's Registerable Common Stock on the basis provided
in any underwriting arrangements approved by the Person entitled hereunder to
approve such arrangements, (b) completes and executes all questionnaires, powers
of attorney, indemnities, underwriting agreements and other documents reasonably
required under the terms of such underwriting arrangements and this Agreement
and (c) if requested by another Person participating in such underwritten
registration, provides that all securities convertible or exchangeable into
Common Stock that are included in such underwritten registration shall be so
converted or exchanged on or prior to the consummation thereof.

        3.5 Termination by the Company. Notwithstanding anything herein
to the contrary, at any time prior to the effectiveness of any registration
statement filed pursuant hereto, the Company shall have the right, in its sole
and absolute discretion, not to proceed with the registration of any securities
pursuant to such registration statement and, in the event that the Company
exercises such right, no holder of Registerable Common Stock shall have any
right to require the Company to register any such Registerable Common Stock
except in accordance with the express provisions of this Agreement.

        3.6 Lock-Up Letters. Each holder of Registerable Common Stock
(whether or not such Registerable Common Stock are included in a registration
statement pursuant hereto) agrees to execute a written agreement not to effect
any public sale or distribution of the issue being registered or of any
securities convertible into or exchangeable or exercisable for such securities,
including a sale pursuant to Rule 144 under the Securities Act, during the
fourteen (14) days prior to, and during the 60-day period beginning on the
effective date of a registration statement filed pursuant hereto except as part
of such registration if and to the extent requested by the Company in the case
of a non-underwritten public offering or if and to the extent requested by the
Managing Underwriter or managing underwriter or underwriters, as the case may
be, in the case of an underwritten public offering.

SECTION 4

RESTRICTIONS ON PUBLIC SALE BY THE COMPANY AND OTHERS

        The Company agrees:

        (a) not to effect any public sale or distribution of any securities
during the 60-day period commencing on the effective date of a registration
statement filed pursuant to Section 2.1, except in connection with any
merger, acquisition, exchange offer, subscription offer, dividend reimbursement
plan or stock option or other director or employee incentive benefit plan; and

        (b) not to grant any other party after the date of this Agreement any
registration rights permitting the registration of Common Stock under the
securities laws of the United States (or any state thereof) or any foreign
jurisdiction that would be superior to the rights granted to the DLJ Parties
hereunder, including, without limitation, that any "demand" or "piggyback"
registration rights granted to any other party shall be exercisable only to the
extent that such exercise would not reduce in a greater than pro rata manner the
number of shares of Registerable Common Stock which the DLJ Parties have elected
to have included in a registration statement pursuant to Section 3.1; and

        (c) that any agreement entered into after the date hereof pursuant to
which the Company grants registration rights with respect to the Company's
securities shall contain a provision under which holders of such securities
agree, to the extent not inconsistent with applicable laws, not to effect any
public sale or distribution of any such securities (excluding any sale in
accordance with Rule 144 under the Act) during the 60-day period beginning on
the date that the registration statement filed pursuant to Section 2.1
becomes effective.

SECTION 5

REGISTRATION PROCEDURES

        5.1 Registration Procedures. Whenever any of the DLJ Parties
has requested that any Registerable Common Stock be registered pursuant to 
Section 2 or 3 hereof, the Company will, at its expense, use its best
efforts to effect the registration and the sale of such Registerable Common
Stock under the Act in accordance with the intended method of disposition
thereof, and in connection with any such request, the Company will:

            (a) prepare and, as soon as practicable, but in any event within 60
days after notice is given by the DLJ Parties to the Company pursuant to 
Section 2.1, or by the Company to the DLJ Parties pursuant to Section 3.1,
file with the Commission a registration statement on any form for which the
Company then qualifies or which counsel for the Company shall deem appropriate
and which form shall be available for the sale of the Registerable Common Stock
to be registered thereunder in accordance with the intended method of
distribution thereof, and use its best efforts to cause such filed registration
statement to become effective under the Act; provided that before filing
a registration statement or prospectus or any amendments or supplements thereto,
the Company will furnish to all Selling Holders and to one counsel reasonably
acceptable to the Company selected by the Selling Holders, copies of all such
documents proposed to be filed, which document will be subject to the review of
and comment by such counsel;

            (b) prepare and promptly file with the Commission such amendments and
supplements to such registration statement and the prospectus used in connection
therewith as may be necessary to keep such registration statement effective for
a period (except as provided in the last paragraph of this Section 5) of
not less than 180 consecutive days or, if shorter, the period terminating when
all Registerable Common Stock covered by such registration statement have been
sold (but not before the expiration of the applicable period referred to in 
Section 4(3) of the Act and Rule 174 thereunder, if applicable) and comply
with the provisions of the Act with respect to the disposition of all securities
covered by such registration statement during such period in accordance with the
intended methods of disposition by the Selling Holders thereof set forth in such
registration statement;

            (c) furnish to each such Selling Holder such number of copies of such
registration statement, each amendment and supplement thereto (in each case
including all exhibits thereto), the prospectus included in such registration
statement (including each preliminary prospectus) and such other documents as
such Selling Holder may reasonably request in order to facilitate the
disposition of the Registerable Common Stock owned by such Selling Holder;

            (d) notify the Selling Holders promptly, and (if requested by any such
Person) confirm such notice in writing, (i) when the registration statement or
any post-effective amendment has become effective under the Act and applicable
state law, (ii) of any request by the Commission or any other Federal or state
governmental authority for amendments or supplements to a registration statement
or related prospectus or for additional information, (iii) of the issuance by
the Commission of any stop order suspending the effectiveness of a registration
statement or the initiation of any proceedings for that purpose, (iv) of the
receipt by the Company of any notification with respect to the suspension of the
qualification or exemption from qualification of any of the Registerable Common
Stock for sale in any jurisdiction or the initiation or threatening of any
proceeding for such purpose; and (v) of the happening of any event which makes
any statement made in such registration statement or related prospectus or any
document incorporated or deemed to be incorporated therein by reference untrue
in any material respect or that requires the making of any-changes in such
registration statement, prospectus or documents so that, in the case of the
registration statement, it will not contain any untrue statement of a material
fact or omit to state any material fact required to be stated therein or
necessary to make the statements therein not misleading, and that in the case of
the prospectus, it will not contain any untrue statement of a material fact or
omit to state any material fact required to be stated therein or necessary to
make the statements therein, in light of the circumstances under which they were
made, not misleading;

            (e) use its best efforts to obtain the withdrawal of any order
suspending the effectiveness of a registration statement, or the lifting of any
suspension of the qualification (or exemption from qualification) of any of the
Registerable Common Stock for sale in any jurisdiction, at the earliest
practicable moment;

            (f) use its best efforts to cooperate with the Selling Holders and any
Managing Underwriter to facilitate the timely preparation and delivery of
certificates representing Registerable Common Stock to be sold, which
certificates shall not bear any restrictive legends and shall be in a form
eligible for deposit with The Depositary Trust Company; and enable such
Registerable Common Stock to be registered in such names as the Managing
Underwriter or Selling Holders may request at least two business days prior to
any sale of Registerable Common Stock;

            (g) use its best efforts to register or qualify such Registerable
Common Stock as promptly as practicable under such other securities or blue sky
laws of such jurisdictions as any Selling Holder or Managing Underwriter
reasonably (in light of the intended plan of distribution) requests and do any
and all other acts and things which may be reasonably necessary or, advisable to
enable such Selling Holder or Managing Underwriter to consummate the disposition
in such jurisdictions of the Registerable Common Stock owned by such Selling
Holder; provided that the Company will not be required to (i) qualify
generally to do business in any jurisdiction where it would not otherwise be
required to qualify but for this paragraph (g), (ii) subject itself to taxation
in any such jurisdiction or (iii) consent to general service of process in any
such jurisdiction;

            (h) use its best efforts to cause such Registerable Common Stock to be
registered with or approved by such other governmental agencies or authorities
as may be necessary by virtue of the business and operations of the Company to
enable the Selling Holder thereof to consummate the disposition of such
Registerable Common Stock;

            (i) enter into customary agreements (including an underwriting
agreement in customary form) and take such other actions as are reasonably
required in order to expedite or facilitate the disposition of such Registerable
Common Stock;

            (j) furnish to each Selling Holder an opinion of counsel to the
Company, dated the effective date of the registration statement (and, if such
registration includes an underwritten public offering, dated the date of the
closing under the underwriting agreement) and a comfort letter from the
Company's independent public accountants, dated the effective date of such
registration statement (and if such registration includes an underwritten public
offering, dated the date of the closing under the underwriting agreement) in
customary form and covering such matters of the type customarily covered by
comfort letters and such other matters as the Selling Holders of a majority of
the shares of Registerable Common Stock being sold or the Managing Underwriter
reasonably requests,

            (k) make available to its security holders, as soon as reasonably
practicable, an earnings statement covering a
period of twelve months, beginning within three months after the effective date
of the registration statement, which earnings statement shall satisfy the
provisions of Section 11(a) of the Act;

            (l) use its best efforts to cause all such Registerable Common Stock
to be listed on each securities exchange on which similar securities issued by
the Company are then listed or quoted on any inter-dealer quotation system on
which similar securities issued by the Company are then quoted;

            (m) use its best efforts to cooperate with the Selling Holders in
connection with the disposition of the shares of Registerable Common Stock,
including causing senior management of the Company to participate in meetings
with prospective investors and in "road show" presentations;

            (n) if any event contemplated by Section 5.1(d)(v) above shall
occur, as promptly as practicable prepare a supplement or amendment or
post-effective amendment to such registration statement or the related
prospectus or any document incorporated therein by reference or promptly file
any other required document so that, as thereafter delivered to the purchasers
of the Registerable Common Stock, the prospectus will not contain an untrue
statement of a material fact or omit to state any material fact required to be
stated therein or necessary to make the statements therein not misleading; 

            (o) and cooperate and assist in any filing required to be made with
the National Association of Securities Dealers, Inc. and in the performance of
any reasonable due diligence investigation by any underwriter.

        The Company may require each Selling Holder to promptly furnish in writing to
the Company such information regarding the distribution of the Registerable
Common Stock as it may from time to time reasonably request and such other
information as may be legally required in connection with any registration.
Notwithstanding anything herein to the contrary, the Company shall have the
right to exclude from any offering the Registerable Common Stock of any Selling
Holder who does not comply with the provisions of the immediately preceding
sentence.

        Each Selling Holder agrees that, (i) upon receipt of any notice from the
Company of the happening of any event which makes any statement made in a
registration statement or related prospectus or any document incorporated or
deemed to be incorporated therein by reference untrue in any material respect or
that requires the making of any changes in such registration statement,
prospectus or documents so that, in the case of the registration statement, it
will not contain any untrue statement of a material fact or omit to state any
material fact required to be stated therein or necessary to make the statements
therein not misleading, and that in the case of the prospectus, it will not
contain any untrue statement of a material fact or omit to state any material
fact required to be stated therein or necessary to make the statements therein,
in light of the circumstances under which they were made, not misleading, (ii)
such Selling Holder will forthwith discontinue disposition of Registerable
Common Stock pursuant to the registration statement covering such Registerable
Common Stock until such Selling Holder's receipt of the copies of the
supplemented or amended prospectus contemplated by Section 5.1(n) hereof,
and, if so directed by the Company, such Selling Holder will deliver to the
Company all copies, other than permanent file copies, then in such Selling
Holder's possession, of the most recent prospectus covering such Registerable
Common Stock at the time of receipt of such notice. In the event the Company
shall give such notice, the Company shall extend the period during which such
registration statement shall be maintained effective by the number of days
during the period from and including the date of the giving of notice pursuant
to Section 5.1(n) hereof to the date when the Company shall make
available to the Selling Holders of Registerable Common Stock covered by such
registration statement a prospectus supplemented or amended to conform with the
requirements of Section 5.1(n) hereof.

        5.2 Registration Expenses. In connection with any registration
statement required to be filed hereunder, the Company shall pay the following
registration expenses (the "Registration Expenses"): (a) all registration
and filing fees (including, without limitation, with respect to filings to be
made with the National Association of Securities Dealers, Inc.), (b) fees and
expenses of compliance with securities or blue sky laws (including reasonable
fees and disbursements of counsel in connection with blue sky qualifications of
the Registerable Common Stock), (c) printing expenses, (d) internal expenses of
the Company (including, without limitation, all salaries and expenses of its
officers and employees performing legal or accounting duties), (e) the fees and
expenses incurred in connection with the listing on an exchange of the
Registerable Common Stock if the Company shall choose to list such Registerable
Common Stock, (f) fees and disbursements of counsel for the Company and
customary fees and expenses for independent certified public accountants
retained by the Company, (g) the fees and expenses of any special experts
retained by the Company in connection with such registration, (h) fees and
expenses of any "road shows" or meeting with investors and (i) fees and expenses
of any "qualified independent underwriter" or other independent appraiser
participating in an offering pursuant to Rule 2720(c) of the National
Association of Securities Dealers, Inc. The Company shall not have any
obligation to pay any underwriting fees, discounts, or commissions attributable
to the sale of Registerable Common Stock or, except as provided by clause (b),
(h) or (i) above, any out-of-pocket expenses of the Selling Holders (or the
agents who manage their accounts) or the fees and disbursements of counsel for
any underwriter.

SECTION 6

TERMINATION

        This Agreement shall terminate upon the earlier of (i) the dissolution,
liquidation or winding-up of the Company, (ii) the date on which the DLJ Parties
collectively are no longer the beneficial owner of at least five percent (5%) of
the Common Stock or (iii) the second anniversary hereof. For the purposes of
this Section 6, the DLJ Parties shall be deemed to own any and all Common
Stock owned by (i) the DLJ Parties and (ii) any affiliates of any DLJ Party.
Notwithstanding the foregoing, the Company's and the DLJ Parties' rights, duties
and obligations under Section 5.2 (to the extent of Registration Expenses
incurred prior to termination) and Section 7 shall survive the
termination of this Agreement.

SECTION 7

INDEMNIFICATION

        7.1 Indemnification by the Company. The Company agrees to
indemnify and hold harmless the DLJ Parties, their respective officers,
directors and agents, and will agree to indemnify and hold harmless any
underwriter of Registerable Common Stock, and each person, if any, who controls
any of the foregoing persons within the meaning of Section 15 of the Act
or Section 20 of the Exchange Act, from and against any and all losses,
claims, damages and liabilities (individually, a "Loss" and collectively,
"Losses") arising from or caused by (x) any untrue statement or alleged
untrue statement of a material fact contained in any registration statement,
prospectus or any preliminary prospectus relating to the Registerable Common
Stock (as amended or supplemented if the Company shall have furnished any
amendments or supplements thereto) or caused by any omission or alleged omission
to state therein a material fact required to be stated therein or necessary to
make the statements therein not misleading, and (y) any violation or alleged
violation by the Company of the Act, any blue sky laws, securities laws or other
applicable laws of any state in which shares of Registerable Common Stock are
offered and relating to action or inaction required by the Company in connection
with such offering; and will reimburse each such person for any legal or other
out-of-pocket expenses reasonably incurred in connection with investigating, or
defending against any such Loss (or any proceeding in respect thereof), subject
to the provisions of Section 7.3, except that the indemnification
provided for in this Section 7.1 shall not apply to Losses that are
caused by any such untrue statement or omission or alleged untrue statement or
omission based upon and in conformity with information furnished in writing to
the Company by or on behalf of any DLJ Party expressly for use therein.
Notwithstanding the foregoing, the Company shall not be liable in any such case
to the extent that any such Loss arises out of, or is based upon, an untrue
statement or alleged untrue statement or omission or alleged omission made in
any preliminary prospectus if (i) any DLJ Party failed to send or deliver a copy
of the prospectus included in the relevant registration statement at the time it
became effective (the "Prospectus") with or prior to the delivery of
written confirmation of the sale of Registerable Common Stock to the person
asserting such Loss or who purchased such Registerable Common Stock which are
the subject thereof if, in either case, such delivery is required by the Act and
(ii) the Prospectus would have corrected such untrue statement or alleged untrue
statement or omission or alleged omission; and the Company shall not be liable
in any such case to the extent that any such Loss arises out of, or is based
upon, an untrue statement or alleged untrue statement of a material fact or
omission or alleged omission to state a material fact in the Prospectus, if such
untrue statement or alleged untrue statement or omission or alleged omission is
corrected in any amendment or supplement to the Prospectus and if, having
previously been furnished by or on behalf of the Company with copies of the
Prospectus as so amended or supplemented, any DLJ Party thereafter fails to
deliver such Prospectus as so amended or supplemented prior to or concurrently
with the sale of Registerable Common Stock if such delivery is required by the
Act.

        7.2 Indemnification by the DLJ Parties. The DLJ Parties agree
to indemnify and hold harmless the Company, its officers, directors and agents
(including any underwriter of Common Stock), and each person, if any, who
controls the Company within the meaning of either Section 15 of the Act
or Section 20 of the Exchange Act to the same extent as the indemnity
made pursuant to clause (x) of Section 7.1 above from the Company to the
DLJ Parties, but only with reference to information furnished in writing by or
on behalf of the DLJ Parties expressly for use in any registration statement or
prospectus relating to shares of Registerable Common Stock, or any amendment or
supplement thereto, or any preliminary prospectus.

        7.3 Conduct of Indemnification Proceedings. In case any
proceeding (including any governmental investigation) shall be instituted
involving any person in respect of which indemnity may be sought pursuant to 
Section 7.1 or 7.2, such person (the "Indemnified Party")
shall promptly notify the person against whom such indemnity may be sought (the
" Indemnifying Party") in writing, provided that the omission to so
notify the Indemnifying Party will not relieve the Indemnifying Party of any
liability it may have under this Agreement or otherwise except to the extent of
any loss, damage, liability or expense arising from such omission. The
Indemnifying Party, upon the request of the Indemnified Party, shall retain
counsel reasonably satisfactory to such Indemnified Party to represent such
Indemnified Party and any others the Indemnifying Party may designate in such
proceeding and shall pay the fees and disbursements of such counsel related to
such proceeding. In any such proceeding, any Indemnified Party shall have the
right to retain its own counsel, but the fees and expenses of such counsel shall
be at the expense of such Indemnified Party unless (i) the Indemnifying Party
and the Indemnified Party shall have mutually agreed to the retention, (ii) the
Indemnified Party shall have failed to comply with its obligations under the
preceding sentence or (iii) the Indemnifying Party shall have been advised by
its counsel in writing that actual or potential differing interests exist
between the Indemnifying Party and the Indemnified Party. The Indemnifying Party
shall not be liable for any settlement of any proceeding effected without its
written consent, which consent shall not be unreasonably withheld. The
Indemnifying Party shall not agree to any settlement as the result of which any
remedy or relief, other than monetary damages for which the Indemnifying Party
shall be fully responsible, shall be applied to or against an Indemnified Party
without the prior written consent of such Indemnified Party, which consent shall
not be unreasonably withheld.

        7.4 Contribution. If the indemnification provided for in this
Section 7 from the Indemnifying Party is unavailable to an Indemnified
Party hereunder in respect of any losses, claims, damages, liabilities or
expenses referred to therein, then the Indemnifying Party, in lieu of
indemnifying such Indemnified Party, shall contribute to the amount paid or
payable by such Indemnified Party as a result of such losses, claims, damages,
liabilities or expenses in such proportion as is appropriate to reflect the
relative fault of the Indemnifying Party and Indemnified Party in connection
with the actions which resulted in such losses, claims, damages, liabilities or
expenses, as well as any other relevant equitable considerations. The relative
fault of such Indemnifying Party and Indemnified Party shall be determined by
reference to, among other things, whether any action in question, including any
untrue or alleged untrue statement of a material fact or omission or alleged
omission to state a material fact, has been made by, or relates to information
supplied by, such Indemnifying Party or Indemnified Party, and the parties'
relative intent, knowledge, access to information and opportunity to correct or
prevent such action. The amount paid or payable by a party as a result of the
losses, claims, damages, liabilities and expenses referred to above shall be
deemed to include, subject to the limitations set forth in Section 7.3,
any legal or other fees or expenses reasonably incurred by such party in
connection with any investigation or proceeding. No party shall be liable in
connection with respect to any action or claim settled without its written
consent, which consent shall not be unreasonably withheld.

        The parties hereto agree that it would not be just and equitable if
contribution pursuant to this Section 7.4 were determined by pro rata
allocation or by any other method of allocation which does not take into account
the equitable considerations referred to in the immediately preceding paragraph.
No person guilty of fraudulent misrepresentation (within the meaning of 
Section 11(f) of the Act) shall be entitled to contribution from any person
who was not guilty of such fraudulent misrepresentation.

SECTION 8

AVAILABLE INFORMATION

        The Company shall take such reasonable actions or file such information,
documents and reports as shall be required by the Commission as a condition to
the availability of Rule 144 or Rule 144A or any successor provisions.

SECTION 9

ASSIGNMENT OF RIGHTS

        9.1 Assignment of Rights. Subject to Section 9.2, the
rights of the DLJ Parties under this Agreement with respect to any Registerable
Common Stock may be assigned to any one or more affiliates of a DLJ Party that
hold Registerable Common Stock. Any assignment of registration rights pursuant
to this Section 9.1 shall be effective upon receipt by the Company of
written notice from such assigning DLJ Party stating (i) the name and address of
any assignee, (ii) the nature of such assignee's relationship to the assignor
and (iii) identifying the Registerable Common Stock with respect to which the
rights under this Agreement are being assigned.

        9.2 Scope of Assignment. The rights of an assignee under 
Section 9.1 shall be the same rights granted to the assigning DLJ Party
under this Agreement, except that in no event shall the Company's obligations
hereunder be increased due to any such assignment. In connection with any such
assignment, the term "DLJ Party" as used herein shall, where appropriate to
assign the rights and obligations of such DLJ Party hereunder to such assignee,
be deemed to refer to the assignee. After any such assignment, the DLJ Parties
shall retain their rights under this Agreement with respect to all other
Registerable Common Stock owned by the DLJ Parties.

SECTION 10

MISCELLANEOUS

        10.1 Provision of Information. The DLJ Parties shall, and shall
cause its directors, officers, employees and agents to complete and execute all
such questionnaires, powers of attorney, indemnities, underwriting agreements
and other documents as the Company shall reasonably request in connection with
any registration pursuant to this Agreement.

        10.2 Injunctions. Irreparable damage would occur in the event
that any of the provisions of this Agreement were not performed in accordance
with its specified terms or were otherwise breached. Therefore, the parties
hereto shall be entitled to an injunction or injunctions to prevent breaches of
the provisions of this Agreement and to enforce specifically the terms of
provisions hereof in any court having jurisdiction, such remedy being in
addition to any other remedy to which they may be entitled at law or in equity.

        10.3 Common Stock Subject to this Agreement. Only Common Stock
now owned by any of the DLJ Parties shall be subject to, and entitled to the
benefits of, the terms of this Agreement.

        10.4 Severability. If any term or provision of this Agreement
is held by a court of competent jurisdiction to be invalid, void or
unenforceable, the remainder of the terms of provisions set forth herein shall
remain in full force and effect and shall in no way be affected, impaired or
invalidated, and the parties hereto shall use their best efforts to find and
employ an alternative means to achieve the same or substantially the same result
as that contemplated by such term or provision.

        10.5 Further Assurances. Subject to the specific terms of this
Agreement, each of the DLJ Parties and the Company shall make, execute,
acknowledge and deliver such other instruments and documents, and take all such
other actions as may be reasonably required in order to effectuate the purposes
of this Agreement and to consummate the transactions contemplated hereby.

        10.6 Entire Agreement; Modification. This Agreement contains
the entire understanding of the parties with respect to the transactions
contemplated hereby and supersedes all agreements and understandings with
respect to registration rights entered into prior to the execution hereof. This
Agreement may be modified only by a written instrument duly executed by or on
behalf of all parties. No breach of any covenant, agreement, warranty or
representation shall be deemed waived unless expressly waived in writing by or
on behalf of the party who might assert such breach.

        10.7 Counterparts. For the convenience of the parties hereto,
any number of counterparts of this Agreement may be executed by the parties
hereto, but all such counterparts shall be deemed one and the same instrument.

        10.8 Notices. Any and all notices, designations, consents,
offers, acceptances or other communications provided for herein (each a "Notice")
shall be given in writing by overnight courier, telegram or telecopy which shall
be addressed, or sent, to the respective addresses as follows (or such other
address as the Company or any DLJ Party may specify to the Company and all other
DLJ Parties by Notice):

The Company:

Wilson Greatbatch Technologies

10,000 Wehrle Drive

Clarence, New York 14031

Attention: President

Telecopy No.: (716) 759-5527

with a copy to:

Attention: Robert B. Fleming, Jr.

Hodgson Russ LLP

One M&T Plaza, Suite 2000

Buffalo, New York 14203

Telecopy No.: (716) 849-0349

DLJ Partners II

Eleven Madison Avenue, 16th Floor

New York, New York 10010

Attention: Nicole Arnaboldi/Ivy Dodes 

Telecopy No.: (212) 325-8356 

DLJ Funding II

DLJMB Funding II, Inc.

Eleven Madison Avenue, 16th Floor

New York, New York 10010

Attention: Nicole Arnaboldi/Ivy Dodes 

Telecopy No.: (212) 325-8356 

DLJ Partners II-A

DLJ Merchant Banking Partners II-A, L.P.

Eleven Madison Avenue, 16th Floor

New York, New York 10010

Attention: Nicole Arnaboldi/Ivy Dodes 

Telecopy No.: (212) 325-8356 

Diversified Partners

DLJ Diversified Partners, L.P.

Eleven Madison Avenue, 16th Floor

New York, New York 10010

Attention: Ivy Dodes/Nicole Arnaboldi

Telecopy No.: (212) 325-8256

Diversified Partners-A

DLJ Diversified Partners-A, L.P. 

Eleven Madison Avenue, 16th Floor

New York, New York 10010

Attention: Ivy Dodes/Nicole Arnaboldi

Telecopy No.: (212) 325-8256

Millennium Partners

DLJ Millennium Partners, L.P. 

c/o DLJ Merchant Banking II, Inc.

Eleven Madison Avenue, 16th Floor

New York, New York 10010

Attention: Ivy Dodes/Nicole Arnaboldi

Telecopy No.: (212) 325-8256

First ESC

DLJ First ESC L.L.C.

c/o DLJ LBO Plans Management Corporation

Eleven Madison Avenue, 16th Floor

New York, New York 10010

Attention: Ivy Dodes/Nicole Arnaboldi

Telecopy No.: (212) 325-8256

Offshore Partners II

DLJ Offshore Partners II, C.V.

c/o DLJ Offshore Management N.V.

John B. Gorsiraweg 14

Willemstad, Curacao

Netherlands, Antilles

Telecopy No.: 011-59-99-614-129

EAB Partners

DLJ EAB Partners, L.P.

c/o DLJ LBO Plans Management Corporation

Eleven Madison Avenue, 16th Floor

New York, NY 10010

Attention: Ivy Dodes/Nicole Arnaboldi

Telecopy No.: (212) 325-8256

UK Partners

UK Investment Plan 1997 Partners

Eleven Madison Avenue, 16th Floor

New York, NY 10010

Attention: Ivy Dodes/Nicole Arnaboldi

Telecopy No.: (212) 325-8256

in each case with a copy to:

Steven D. Rubin, Esq.

Weil, Gotshal & Manges LLP

700 Louisiana, Suite 1600

Houston, Texas 77002

Telecopy No.: (713) 224-9511

        All Notices shall be deemed effective and received (a) if given by telecopy,
when such telecopy is transmitted to the telecopy number specified above and
receipt thereof is confirmed; (b) if given by overnight courier, on the business
day immediately following the day on which such Notice is delivered to a
reputable overnight courier service; or (c) if given by telegram, when such
Notice is delivered at the address specified above. No DLJ Party shall be
entitled to receive a Notice hereunder (or a copy of a Notice delivered to the
Company) if, at the time such Notice is to be sent, such DLJ Party (including
its affiliates and the employees of such DLJ Party and its affiliates) no longer
owns any Common Stock.

        10.9 Section Headings. Headings contained in this Agreement are
inserted only as a matter of convenience and in no way define, limit or extend
the scope or intent of this Agreement or any provisions hereof.

        10.10 Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND
CONSTRUED AND ENFORCED IN ACCORDANCE WITH THE LAWS OF THIS STATE OF NEW YORK
WITHOUT REGARD TO ANY CHOICE OF LAW PRINCIPLES WHICH MIGHT REQUIRE OR PERMIT THE
APPLICATION OF LAWS OF ANOTHER JURISDICTION.

        10.11 Successors and Assigns. This Agreement shall be binding
upon and shall inure to the benefit of and be enforceable by and against the
successors and assigns of the parties hereto. Except as provided herein, the
parties may not assign their rights under this Agreement and the Company may not
delegate its obligations under this Agreement. Any attempted assignment or
delegation prohibited hereby shall be void.

        IN WITNESS WHEREOF, the parties hereto have executed this Registration Rights
Agreement as of the date first above written.

WILSON GREATBATCH TECHNOLOGIES, INC.

                    By:   /s/ Edward F. Voboril

                            Edward F. Voboril

                           
                    President and Chief Executive Officer

                    DLJ MERCHANT BANKING PARTNERS II, L.P.

                    By:     DLJ MERCHANT BANKING II, INC.

                             
                    Managing General Partner

                    By: /s/ Nicole Arnaboldi

                    Name: Nicole Arnaboldi

 

                    DLJMB FUNDING II, INC.

                    By: /s/ Nicole Arnaboldi

                    Name: Nicole Arnaboldi

 

                    DLJ MERCHANT BANKING PARTNERS II-A, L.P.

                    By:   DLJ MERCHANT BANKING II, INC. 

        Managing General
                    Partner

                    By: /s/ Nicole Arnaboldi

                    Name: Nicole Arnaboldi

 

                    DLJ DIVERSIFIED PARTNERS, L.P.

                    By: DLJ DIVERSIFIED PARTNERS, INC.

                    By: /s/ Nicole Arnaboldi

                    Name: Nicole Arnaboldi

 

                    DLJ DIVERSIFIED PARTNERS-A, L.P.

                    By: DLJ DIVERSIFIED PARTNERS, INC.

                    By: /s/ Nicole Arnaboldi

                    Name: Nicole Arnaboldi

 

                    DLJ MILLENNIUM PARTNERS, L.P.

                    By: DLJ MERCHANT BANKING II, INC.

                    By: /s/ Nicole Arnaboldi

                    Name: Nicole Arnaboldi

 

                    DLJ FIRST ESC L.L.C.

                    By:     DLJ LBO PLANS MANAGEMENT

                             
                    CORPORATION

                             
                    As Manager

                    By: /s/ Nicole Arnaboldi

                    Name: Nicole Arnaboldi

 

                    DLJ OFFSHORE PARTNERS II, C.V.

                    By:     DLJ MERCHANT BANKING II, INC.

                             
                    Managing General Partner

                    By: /s/ Nicole Arnaboldi

                    Name: Nicole Arnaboldi

 

                    DLJ EAB PARTNERS, L.P.

                    By:     DLJ LBO PLANS MANAGEMENT

          CORPORATION

                    By: /s/ Nicole Arnaboldi

                    Name: Nicole Arnaboldi

 

                    UK INVESTMENT PLAN 1997 PARTNERS

                    By: DONALDSON, LUFKIN & JENRETTE, INC.

                    By:______________________________

                            Name:

                           
                    Title:

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