Document:

American Dental Partners, Inc. 2005 Directors Stock Option Plan

 Exhibit 10.2 
  
 AMERICAN DENTAL PARTNERS, INC. 
  
 2005 DIRECTORS STOCK OPTION PLAN 
  
 Section 1. Purpose of Plan. 
  
 The purpose of this 2005 Directors Stock Option Plan (the “Plan”) of American Dental Partners, Inc., a Delaware corporation (the
“Company”), is to advance the interests of the Company and its stockholders by providing Eligible Directors (as defined in Section 3, below) with an opportunity to participate in the Company’s future prosperity and growth and an
incentive to increase the value of the Company based on the Company’s performance, development, and financial success. These objectives will be promoted by granting to Eligible Directors options (the “Options”), which are not intended
to qualify as incentive stock options under Section 422 of the Internal Revenue Code of 1986, as amended (the “Code”), to purchase shares of the Company’s common stock, $.01 par value (the “Shares”). 
  
 Section 2. Administration of Plan. 
  
 The Plan shall be administered by a committee (the “Committee”) of
one or more directors. The member or members of the Committee shall serve at the pleasure of the Company’s board of directors (the “Board”), which may remove members from the Committee or appoint new members to the Committee from time
to time, and members of the Committee may resign by written notice to the Chairman of the Board or the Secretary of the Company. The Committee shall have the power and authority to: (a) approve the grant of Options to Eligible Directors (such
Eligible Directors, “Participants”); (b) approve the terms and conditions, not inconsistent with the terms hereof, of any Option, including without limitation time and performance restrictions, and approve the form of Stock Option
Agreement (as defined in Section 5, below); (c) adopt, alter, and repeal such administrative rules, guidelines, and practices governing the Plan as it shall, from time to time, deem advisable; (d) interpret the terms and provisions of the Plan and
any Option granted and any agreements relating thereto; and (e) take any other actions the Committee considers appropriate in connection with, and otherwise supervise the administration of, the Plan, all in a manner consistent with the other
provisions of the Plan. All decisions made by the Committee pursuant to the provisions hereof shall be made in the Committee’s sole discretion and shall be final and binding on all persons. 
  
 Section 3. Participants in Plan. 
  
 The persons eligible to receive Options under the Plan shall be those
directors of the Company who are not employees or officers of the Company or any subsidiary of the Company (“Eligible Directors”). 
  
 Section 4. Shares Subject to Plan. 
  
 The maximum aggregate number of Shares which may be issued under the Plan shall be 150,000 Shares. The Shares that may be issued under the Plan may be
authorized but unissued Shares or issued Shares reacquired by the Company, including without limitation Shares purchased on the open market, and held as treasury shares. 

 If any Shares that have previously been the subject of an Option cease to be the subject of an Option
(other than by reason of exercise), or if any Shares previously distributed under the Plan are returned to the Company in connection with the exercise of an Option (including without limitation in payment of the exercise price or tax withholding),
such Shares shall again be available for distribution in connection with future grants under the Plan. 
  
 Section 5. Grant of Options. 
  
 Each Option granted under the Plan shall be authorized by the Committee and shall be evidenced by a written agreement (the “Stock Option Agreement”) in form approved by the Committee from time to time, which shall be dated as of
the date on which the Option is granted, signed by an officer of the Company authorized by the Committee, and signed by the Participant, and which shall describe the Option and state that the Option is subject to all the terms and provisions of the
Plan and such other terms and provisions, not inconsistent with the Plan, as the Committee may approve. The date on which the Committee approves the granting of an Option shall be deemed to be the date on which the Option is granted for all
purposes, unless the Committee otherwise specifies in its approval. However, the granting of an Option under the Plan shall be effective only if a written Stock Option Agreement is duly executed and delivered by or on behalf of the Company and the
Participant. 
  
 In addition to the foregoing, all Stock Option
Agreements shall include without limitation the following provisions: 
  
 (a) Vesting. 
  
 Each Option
shall be exercisable only with respect to the Shares which have become vested pursuant to the terms of that Option. Each Option shall become vested with respect to Shares subject to that Option on such date or dates and on the basis of such other
criteria, including without limitation performance of the Company, as the Committee may determine, in its sole discretion, and shall be specified in the applicable Stock Option Agreement. The Committee shall have the authority, in its sole
discretion, to accelerate the time at which an Option shall be exercisable whenever it may determine that such action is appropriate by reason of changes in applicable tax or other laws or other changes in circumstances occurring after the grant of
such Option. 
  
 (b) Exercise Price. 
  
 The exercise price per Share issuable upon exercise of an
Option shall be determined by the Committee at the time of grant and set forth in the applicable Stock Option Agreement; provided that such exercise price shall not be less than the fair market value per Share on date the Option is granted. For
purposes of the Plan, the fair market value of the Shares shall mean, as of any given date, the (i) last reported sale price on the New York Stock Exchange on the most recent previous trading day, (ii) last reported sale price on the NASDAQ National
Market System on the most recent previous trading day, (iii) mean between the high and low bid and ask prices, as reported by the National Association of Securities Dealers, Inc. on the most recent previous trading day, or (iv) 
  

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 last reported sale price on any other stock exchange on which the Shares are listed on the most recent
previous trading day, whichever is applicable; provided that if none of the foregoing is applicable, then the fair market value of the Shares shall be the value determined by the Committee, in its sole discretion. 
  
 (c) Term. 
  
 No Option shall be exercisable after the expiration of 10
years from the date on which that Option is granted. 
  
 (d)
Method of Exercise. 
  
 An Option may be
exercised, in whole or in part, by giving written notice to the Company stating the number of Shares (which must be a whole number) to be purchased. Upon receipt of payment of the full purchase price for such Shares, plus applicable withholding
taxes, by certified or bank cashier’s check or other form of payment acceptable to the Company, or, if approved by the Committee, in its sole discretion, by (i) delivery of unrestricted Shares having a fair market value on the date of such
delivery equal to the total exercise price, (ii) surrender of Shares subject to the Option which have a fair market value equal to the total exercise price at the time of exercise, or (iii) a combination of the preceding methods, and subject to
compliance with all other terms and conditions of the Plan and the Stock Option Agreement relating to such Option, the Company shall issue, as soon as reasonably practicable after receipt of such payment, such Shares to the person entitled to
receive such Shares, or such person’s designated representative. Such Shares may be issued in the form of a certificate, by book entry, or otherwise, in the Company’s sole discretion. 
  
 (e) Restrictions on Shares Subject to Options. 
  
 Shares issued upon the exercise of any Option may be made
subject to such transferability or other restrictions or conditions as the Committee may determine, in its sole discretion, and as shall be set forth in the applicable Stock Option Agreement. 
  
 (f) Transferability. 
  
 Options shall not be transferable. Any attempted transfer
shall be null and void. All Options shall be exercisable during a Participant’s lifetime only by the Participant or the Participant’s legal representative. Notwithstanding the foregoing to the contrary: (i) Options may be transferred by a
Participant by will or the laws of descent and distribution; and (ii) the Committee may, in its sole discretion and in the manner established by the Committee, provide for the irrevocable transfer, without payment of consideration, of any Option by
a Participant to such Participant’s spouse, children, grandchildren, nieces, or nephews, to the trustee of any trust for the principal benefit of one or more such persons, or to a partnership whose only partners are one or more such persons. In
the case of such a permitted transfer, the Option shall be exercisable only by the transferee or such transferee’s legal representative. 
  

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 (g) Termination of Status as an Eligible Director by Reason of Death or Disability. 
  
 If a Participant’s status as an Eligible Director
terminates by reason of the Participant’s death or disability (as defined in Section 22(e)(3) of the Code, or as may otherwise be defined by the Committee from time to time, in its sole discretion, at or before grant and included in the
applicable Stock Option Agreement), then (i) unless otherwise determined by the Committee, in its sole discretion, at or before grant (and set forth in the Stock Option Agreement), to the extent an Option held by such Participant is not vested as of
the date of such termination, such Option shall automatically terminate on such date; and (ii) to the extent an Option held by such Participant is vested as of the date of such termination, such Option may thereafter be exercised by the Participant,
the legal representative of the Participant’s estate, the legatee of the Participant under the will of the Participant, the distributee of the Participant’s estate, or the Participant’s other successor in interest, whichever is
applicable, for a period of one year from the date of death or disability, or, if sooner, until the expiration of the stated term of the Option. 
  
 (h) Other Termination of Status as an Eligible Director. 
  

If a Participant’s status as an Eligible Director terminates for any reason other than death or disability, then (i) to the extent
any Option held by such Participant is not vested as of the date of termination, such Option shall automatically terminate on such date; and (ii) unless otherwise determined by the Committee, in its sole discretion, at or before grant (and set forth
in the Stock Option Agreement), to the extent any Option held by such Participant is vested as of the date of such termination, such Option may thereafter be exercised for a period of 90 days from the date of termination or, if sooner, until the
expiration of the stated term of the Option; provided that, if the Participant’s status as an Eligible Director is terminated for Cause (as defined by the Committee, in its sole discretion, from time to time, and included in the applicable
Stock Option Agreement), any and all unexercised Options held by such Participant shall immediately lapse and be of no further force or effect. For purposes of the Plan, whether termination of a Participant’s status as an Eligible Director is
for “Cause” shall be determined by the Committee, in its sole discretion. 
  
 (i) Effect of Termination of Participant’s Status as an Eligible Director on Transferee. 
  
 No Option held by a transferee of a Participant pursuant to Section 5(f), above, shall remain exercisable for any period of time longer
than would otherwise be permitted under Section 5(g) and 5(h). 
  
 Section 6.
Restriction On Exercise After Termination. 
  
 Notwithstanding any provision of this Plan to the contrary, no unexercised right created under this Plan (an “Unexercised Right”) shall be exercisable if, prior to such exercise, the Participant violates any non-competition,
confidentiality, conflict of interest, or similar provision set forth in the Stock Option Agreement pursuant to which such Unexercised Right was awarded or otherwise conducts himself in a manner adversely affecting the Company or any subsidiary of
the Company, as determined by the Committee, in its sole discretion. 
  

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 Section 7. Withholding Tax. 
  
 The Company, at its option, shall have the right to require the Participant or any other person receiving Shares under the
Plan to pay the Company the amount of any taxes which the Company is required to withhold with respect to such Shares or, in lieu of such payment, to retain or sell without notice a number of such Shares sufficient to cover the amount required to be
so withheld. The Company, at its option, shall have the right to deduct from all dividends paid with respect to Shares the amount of any taxes which the Company is required to withhold with respect to such dividend payments. The obligations of the
Company under the Plan shall be conditional on such payment or other arrangements acceptable to the Company. 
  
 Section 8. Securities Law Restrictions. 
  
 No right under the Plan shall be exercisable and no Share shall be delivered under the Plan except in compliance with all applicable federal and state securities laws and regulations. The Company shall not be required
to deliver any Shares or other securities under the Plan prior to such registration or other qualification of such Shares or other securities under any state or federal law, rule, or regulation as the Committee shall determine to be necessary or
advisable, in its sole discretion. 
  
 The Committee may require
each person acquiring Shares under the Plan to make such representations, warranties, and agreements with respect to the investment intent of such person or persons as the Committee may reasonably request. Any certificates for such Shares may
include any legend which the Committee deems appropriate to reflect any restrictions on transfer. 
  
 All Shares or other securities delivered under the Plan shall be subject to such stop-transfer orders and other restrictions as the Committee may deem
advisable, in its sole discretion, under the rules, regulations, and other requirements of the Securities and Exchange Commission, any stock exchange upon which the Shares are then listed, and any applicable federal or state securities law, and the
Committee may cause a legend or legends to be put on any certificates evidencing such Shares to make appropriate reference to such restrictions. 
  
 Section 9. Change in Capital Structure. 
  
 In the event the Company changes its outstanding Shares by reason of stock splits, stock dividends, or any other increase or reduction of the number of
outstanding Shares without receiving consideration in the form of money, services, or property deemed appropriate by the Board, in its sole discretion, the aggregate number of Shares subject to the Plan shall be proportionately adjusted and the
number of Shares and the exercise price for each Share subject to the unexercised portion of any then-outstanding Option shall be proportionately adjusted with the objective that the Participant’s proportionate interest in the Company shall
remain the same as before the change without any change in the total exercise price applicable to the unexercised portion of any then-outstanding Options, all as determined by the Committee, in its sole discretion. 
  

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 In the event of any other recapitalization or any merger, consolidation, or other reorganization of the
Company, the Committee shall make such adjustment, if any, as it may deem appropriate to accurately reflect the number and kind of Shares deliverable, and the exercise prices payable, upon subsequent exercise of any then-outstanding Options, as
determined by the Committee, in its sole discretion. 
  
 The
Committee’s determination of the adjustments appropriate to be made under this Section 9 shall be conclusive upon all Participants under the Plan. 
  
 Section 10. Change in Control. 
  
 (a) Accelerated Vesting and Company Purchase Option. 
  
 Notwithstanding any provision of this Plan or any Stock Option Agreement to the contrary (unless such Stock Option Agreement contains a
provision referring specifically to this Section 10 and stating that this Section 10 shall not be applicable to the Option evidenced by such Stock Option Agreement), if a Change in Control (as defined below) occurs, then: 
  

	 	(i)	Any and all Options theretofore granted and not fully vested shall thereupon become vested and exercisable in full and shall remain so exercisable in accordance with their terms;
provided that no Option which has previously been exercised or otherwise terminated shall become exercisable; and 

  

	 	(ii)	The Company may, at its option, terminate any or all unexercised Options and portions thereof not more than 30 days after such Change in Control; provided that the Company shall,
upon such termination and with respect to each Option so terminated, pay to the Participant (or such Participant’s transferee, if applicable) theretofore holding such Option cash in an amount equal to the difference between the fair market
value (as defined in Section 5(a), above) of the Shares subject to the Option at the time the Company exercises its option under this Section 10(a)(ii) and the exercise price of the Option, less applicable withholding taxes; and provided further
that if such fair market value is less than such exercise price, then the Committee may, in its sole discretion, terminate such Option without any payment. 

  

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 (b) Definition of Change in Control. 
  
 For purposes of the Plan, a “Change in Control”
means the happening of any of the following: 
  

	 	(i)	The direct or indirect acquisition by any “person” as defined in §3(a)(9) of the Securities Exchange Act of 1934, as amended (the “1934 Act”), and as used
in §§13(d) and 14(d) thereof, including a “group” within the meaning of §13(d) of the 1934 Act (hereinafter, simply a “Person”), of “beneficial ownership” (within the meaning of Rule 13d-3 under the 1934
Act) of securities of the Company representing more than 50% of the combined voting power of the Company’s then outstanding voting securities entitled to vote generally in the election of directors of the Company (the “Company Voting
Securities”); provided that: (A) for purposes of this subsection (i), the term “Person” shall not include the Company, any subsidiary of the Company, or any employee benefit plan sponsored or maintained by the Company or any
subsidiary of the Company (including any trustee of such plan acting as trustee); and (B) the provisions of this subsection (i) shall not apply to (1) any acquisition of securities from the Company or any of its subsidiaries, or (2) any acquisition
of securities pursuant to a Business Combination (as defined below) which satisfies clauses (A) and (B) of subsection (iii) of this §10(b); 

  

	 	(ii)	When, during any period of 24 consecutive months during the existence of the Plan, the individuals who, at the beginning of such period constitute the Board (the “Incumbent
Directors”) cease for any reason other than death to constitute at least at least a majority of the Board; provided, however, that a director who was not a director at the beginning of such 24-month period shall be deemed to have satisfied such
24-month requirement (and be an Incumbent Director) if such director was elected by, or on the recommendation of or with the approval of, at least two-thirds of the directors who then qualified as Incumbent Directors either actually (because they
were directors at the beginning of such 24-month period) or by prior operation of this §10 (b)(ii); or 

  

	 	(iii)	Approval by the stockholders of the Company of a reorganization, merger, consolidation, or recapitalization of the Company, or a sale or other disposition of all or substantially
all of the assets of the Company, or the acquisition of the assets of another corporation or other entity (any such transaction, a “Business Combination”), or the consummation of a Business Combination for which stockholder approval is not
obtained, unless, in any such case, following such Business Combination: (A) all or substantially all of the individuals and entities who were the beneficial owners of the Company Voting Securities outstanding immediately prior to such Business
Combination beneficially own, directly or indirectly, immediately following such Business Combination, more than 50% of the 

  

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 combined voting power of the then outstanding voting securities entitled to vote generally in the
election of directors (or their equivalent) of the corporation or other entity resulting from such Business Combination in substantially the same proportions as their ownership of the Company Voting Securities immediately prior to such Business
Combination, and (B) at least a majority of the members of the board of directors (or its equivalent) of the corporation or other entity resulting from such Business Combination were Incumbent Directors at the time of the execution of the initial
agreement, or of the action of the Board, providing for such Business Combination; or 
  

	 	(iv)	Approval by the stockholders of the Company of a complete liquidation or dissolution of the Company. 

  
 Section 11. Six-Month Holding Period. 
  
 If an exemption from Section 16(b) of the 1934 Act is not otherwise available under 1934 Act Rule 16b-3(d)(1) or (2), then Shares purchased upon exercise
of an Option may not be sold before at least six months have elapsed from the date the Option was granted. 
  
 Section 12. No Enlargement of Rights. 
  
 The adoption of this Plan and the grant of one or more Options to an Eligible Director shall not confer any right to the Eligible Director to continue in the status of Eligible Director and shall not restrict or
interfere in any way with the right of the Company to terminate such Eligible Director’s status as such at any time, with or without cause. 
  
 Section 13. Rights as Stockholder. 
  
 No Participant or his executor or administrator or other transferee shall have any rights of a stockholder in the Company with respect to the Shares
covered by an Option unless and until a certificate representing such Shares has been duly issued and delivered to him under the Plan. 
  
 Section 14. Acceleration of Rights. 
  
 The Committee shall have the authority, in its sole discretion, to accelerate the time at which an Option shall be exercisable whenever it may determine
that such action is appropriate by reason of changes in applicable tax or other laws or other changes in circumstances occurring after the award of such Option. 
  

Section 15. Definition of Subsidiary. 
  
 The term “subsidiary,” when used in the Plan or any Stock Option Agreement made pursuant to the Plan, shall mean (a) any subsidiary corporation
of the Company as defined in Section 424(f) of the Code and the Treasury Regulations promulgated thereunder (the “Regulations”), (b) any limited liability company in which the Company or any of its subsidiaries is the sole member, and (c)
any limited partnership (i) in which the Company or one of its subsidiaries owns 50 percent or more of the combined voting power of all classes of equity, and (ii) which has elected to be taxed as a corporation for federal income tax purposes.

  

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 Section 16. Interpretation, Amendment or Termination of Plan. 
  
 The interpretation by the Committee of any provision of the Plan or of any
Stock Option Agreement executed pursuant to the grant of an Option under the Plan shall be final and conclusive upon all Participants or transferees under the Plan. The Board, without further action on the part of the stockholders of the Company,
may from time to time alter, amend, or suspend the Plan or may at any time terminate the Plan; provided that: (a) no such action shall adversely affect any Participant’s rights with respect to outstanding Options then held by such Participant
without such Participant’s consent; and (b) except for the adjustments provided for in Section 9, above, no amendment may be made by Board action without stockholder approval if the amendment would require stockholder approval under applicable
law or regulation. Subject to the above provisions, the Board shall have authority to amend the Plan to take into account changes in applicable tax and securities laws and accounting rules, stock exchange or market rules, as well as other
developments. 
  
 The Committee may amend the terms of any Option
theretofore granted, prospectively or retroactively; provided, no such amendment shall impair the rights of any Participant without the Participant’s consent, unless it is made to cause the Plan or such Option to comply with applicable law,
stock exchange or market rules or accounting rules. 
  
 Section 17. Protection
of Board and Committee. 
  
 No member of the Board or the
Committee shall have any liability for any determination or other action made or taken in good faith with respect to the Plan or any Option granted under the Plan. 
  
 Section 18. Government Regulations. 
  
 Notwithstanding any provision of the Plan or any Stock Option Agreement executed pursuant to the Plan, the Company’s obligations under the Plan and
such Agreement shall be subject to all applicable laws, rules, and regulations and to such approvals as may be required by any governmental or regulatory agencies, including without limitation any stock exchange on which the Shares may then be
listed. 
  
 Section 19. Governing Law. 
  
 The Plan shall be construed and governed by the laws of the State of
Delaware. 
  
 Section 20. Genders and Numbers. 
  
 When permitted by the context, each pronoun used in the Plan shall include
the same pronoun in other genders and numbers. 
  

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 Section 21. Captions. 
  
 The captions of the various sections of the Plan are not part of the context of the Plan, but are only labels to assist in locating those sections, and
shall be ignored in construing the Plan. 
  
 Section 22. Effective Date.

  
 The Plan shall be effective April 26, 2005 (the
“Effective Date”); provided that if the Plan is not approved by the Company’s stockholders at the annual meeting of the stockholders to be held on the Effective Date, or at any adjournment of that meeting, then the Plan shall
automatically become null and void and have no further force or effect. 
  
 Section 23. Term of Plan. 
  
 No Option shall be
granted pursuant to the Plan on or after the 10th anniversary of the Effective Date, but Options granted prior to
such tenth anniversary may extend beyond that date. 
  
 Section 24. Savings
Clause. 
  
 In case any one or more of the provisions of this
Plan shall be held invalid, illegal, or unenforceable in any respect, the validity, legality, and enforceability of the remaining provisions shall not in any way be affected or impaired thereby, and the invalid, illegal, or unenforceable provision
shall be deemed null and void; however, to the extent permissible by law, any provision which could be deemed null and void shall first be construed, interpreted, or revised retroactively to permit this Plan to be construed so as to foster the
intent of this Plan. This Plan and all transactions pursuant to this Plan are intended to comply in all respects with applicable law and regulation, including, with respect to persons subject to Section 16 of the 1934 Act (“Reporting
Persons”), Rule 16b-3 under the 1934 Act. In case any one or more of the provisions of this Plan or any transaction pursuant to this Plan shall be held to violate or be unenforceable in any respect under Rule 16b-3, then, to the extent
permissible by law, any provision which could be deemed to violate or be unenforceable under Rule 16b-3 shall first be construed, interpreted, or revised retroactively to permit the Plan or transaction to be in compliance with Rule 16b-3.

  

 10Schlumberger Discounted Stock Purchase Plan

 Exhibit 4.4.1 
  
 SCHLUMBERGER DISCOUNTED STOCK PURCHASE PLAN 
 (As Amended and Restated January 21, 1998) 
  

	1.	Purpose 

  
 The Schlumberger Discounted Stock Purchase Plan (the “Plan”) is designed to encourage and assist all employees of Schlumberger Limited, a
Netherlands Antilles corporation, and Subsidiaries (hereinafter collectively referred to as the “Company”), where permitted by applicable laws and regulations, to acquire an equity interest in Schlumberger Limited through the purchase of
shares of Common Stock, par value $0.01 per share, of Schlumberger Limited (“Common Stock”). It is intended that this Plan shall constitute an “employee stock purchase plan” within the meaning of Section 423 of the Internal
Revenue Code of 1986, as amended (the “Code”). 
  

	2.	Administration of the Plan 

  
 The Plan shall be administered by the Stock Purchase Plan Committee (the “Committee”) appointed by the Board of Directors of Schlumberger
Limited (the “Board”), which Committee shall consist of at least three (3) persons. The Committee shall supervise the administration and enforcement of the Plan according to its terms and provisions and shall have all powers necessary to
accomplish these purposes and discharge its duties hereunder including, but not by way of limitation, the power to (i) employ and compensate agents of the Committee for the purpose of administering the accounts of participating employees; (ii)
construe or interpret the Plan; (iii) determine all questions of eligibility; and (iv) compute the amount and determine the manner and time of payment of all benefits according to the Plan hereunder. 
  
 The Committee may act by unanimous decision of its members at a regular or
special meeting of the Committee or by decision reduced to writing and signed by all members of the Committee without holding a formal meeting. Vacancies in the membership of the Committee arising from death, resignation or other inability to serve
shall be filled by appointment of the Board. 
  

	3.	Nature and Number of Shares 

  
 The Common Stock subject to issuance under the terms of the Plan shall be shares of Schlumberger Limited’s authorized but unissued shares or
previously issued shares reacquired and held by Schlumberger Limited. Except as provided in Section 20 hereof, the aggregate number of shares which may be issued under the Plan and authorized by this amendment shall not exceed the sum of (i) the
8,000,000 shares of Common Stock authorized by the 1992 Amendment and restatement of the Plan as adjusted for the 1997 stock split and (ii) 12,000,000 shares of Common Stock. All shares purchased under the Plan, regardless of source, shall be
counted against this share limitation. 
  

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	4.	Eligibility Requirements 

  
 Each “Employee” (as hereinafter defined), except as described in the next following paragraph, shall become eligible to participate in the Plan
in accordance with Section 5 on the first “Enrollment Date” (as hereinafter defined) following employment by the Company. Participation in the Plan is voluntary. 
  
 The following Employees are not eligible to participate in the Plan: 
  
 (i) Employees who would, immediately upon enrollment in the
Plan, own directly or indirectly, or hold options or rights to acquire, an aggregate of 5% or more of the total combined voting power or value of all outstanding shares of all classes of the Company or any subsidiary; 
  
 (ii) Employees who are customarily employed by the Company
less than twenty (20) hours per week or less than five (5) months in any calendar year; 
  
 (iii) Employees who are prohibited by the laws and regulations of the nation of their residence or employment from participating in the
Plan as determined by the Committee; and 
  
 (iv)
Employees who have not completed at least six (6) months of service with the Company as of an Enrollment Date. 
  
 “Employee” shall mean any individual employed by Schlumberger Limited or any Subsidiary (as hereinafter defined). “Subsidiary” shall
mean any corporation in existence as of the “Effective Date” (as hereinafter defined) of this Plan in an unbroken chain of corporations beginning with Schlumberger Limited if, as of the Effective Date, each of the corporations other than
the last corporation in the chain owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in the chain. Any corporation which may become a Subsidiary (as defined herein) after the
Effective Date shall automatically be deemed to be a participating Subsidiary under this Plan effective as of the following Enrollment Date unless the Committee takes action to exclude such corporation and its employees from participation herein.

  

	5.	Enrollment 

  
 Each eligible Employee of Schlumberger Limited or any Subsidiary as of July 1, 1988 (the “Effective Date” herein) may enroll in the Plan as of
the Effective Date. Each other eligible Employee of Schlumberger Limited or a participating Subsidiary who thereafter becomes eligible to participate may enroll in the Plan on the first July 1 following the date he or she first meets the eligibility
requirements of Section 4. Any eligible Employee not enrolling in the Plan when first eligible may enroll in the Plan on the first day of July of any subsequent calendar year. Any eligible Employee may enroll or re-enroll in the Plan on the dates
hereinabove prescribed or such other specific dates established by the Committee from time to time (“Enrollment Dates”). 
  
 In order to enroll, an eligible Employee must complete, sign and submit the appropriate form to the Personnel Department of the Company. 
  

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	6.	Method of Payment 

  
 Payment for shares is to be made as of the applicable “Purchase Date” (as defined in Section 9) through payroll deductions (with no right of
prepayment) over the Plan’s designated purchase period (the “Purchase Period”) with the first such deduction commencing with the payroll period ending after the Enrollment Date. Each Purchase Period under the Plan shall be a period of
twelve (12) calendar months beginning on July 1 and ending on the following June 30 or such other period as the Committee may prescribe. Each participating Employee (hereinafter referred to as a “Participant”) will authorize such
deductions from his or her pay for each month during the Purchase Period and such amounts will be deducted in conformity with his or her employer’s payroll deduction schedule. 
  
 Each Participant may elect to make contributions each pay period in amounts not less than one percent (1%) and not more than
ten percent (10%), or such other percentages as the Committee may establish from time to time before an Enrollment Date for all purchases to occur during the relevant Purchase Period, of his or her base earnings or salary, geographical coefficient,
overtime pay, shift premiums and commissions from the Company (excluding long-term disability or workers compensation payments and similar amounts, but including elective qualified contributions by the Participant to employee benefit plans
maintained by the Company) during such pay period. The rate of contribution shall be designated by the Participant in the enrollment form. Effective July 1, 1992, bonuses will be included in determining the amount of the Participant’s
contribution unless the Participant gives written notice to the Personnel Department at the time and in the manner directed by the Committee. 
  
 A Participant may elect to increase or decrease the rate of contribution effective as of the first day of any calendar quarter by giving thirty (30)
days’ written notice to the Personnel Department of the Company on the appropriate form. A Participant may suspend payroll deductions at any time during the Purchase Period, by giving thirty (30) days’ written notice to the Personnel
Department on the appropriate form. In such case, the Participant’s account will continue to accrue interest and will be used to purchase stock at the end of the Purchase Period. A Participant may also elect to withdraw contributions at any
time by giving thirty (30) days’ prior written notice to the Personnel Department of the Company on the appropriate form. Any Participant who withdraws his or her contributions will receive his or her entire account balance, including interest
and dividends, if any, plus a stock certificate for the number of shares held by the Participant under the Plan as soon as practicable. Any Participant who suspends payroll deductions or withdraws contributions during any Purchase Period cannot
resume payroll deductions during such Purchase Period and must re-enroll in the Plan in order to participate in the next Purchase Period. 
  
 No more than the maximum contribution permitted any Participant under Section 9 can be accumulated over the Purchase Period, including interest and
dividends, if applicable. Except in case of cancellation of election to purchase, death, resignation or other terminating event, the amount in a Participant’s account the end of the Purchase Period will be applied to the purchase of the shares.

  

 3 

	7.	Crediting of Contributions, Interest and Dividends 

  
 Contributions shall be credited to a Participant’s account as soon as administratively feasible after payroll withholding. Unless otherwise
prohibited by laws and regulations, Participant contributions will receive interest at a rate realized for the investment vehicle or vehicles designated by the Committee for purposes of the Plan. Interest will be credited to a Participant’s
account from the first date on which Participant contributions are deposited with the investment vehicle until the earlier of (i) the end of the Purchase Period or (ii) in the event of cancellation, death, resignation or other terminating event, the
last day of the month next preceding the date on which such contributions are returned to the Participant. Dividends on shares held in a Participant’s account in the Plan will also be credited to such Participant’s account. Any such
contributions, interest and dividends shall he deposited in or held by a bank or financial institution designated by the Committee for this purpose (“Custodian”). 
  

	8.	Grant of Right to Purchase Shares on Enrollment 

  
 Enrollment in the Plan by an Employee on an Enrollment Date will constitute the grant by the Company to the Participant of the right to purchase shares of
Common Stock under the Plan. Re-enrollment by a Participant in the Plan (but not merely an increase or decrease in the rate of contributions) will constitute a grant by the Company to the Participant of a new opportunity to purchase shares on the
Enrollment Date on which such re-enrollment occurs. A Participant who has not terminated employment and has not withdrawn his or her contributions from the Plan will have shares of Common Stock purchased for him or her on the applicable Purchase
Date, and he or she will automatically be re-enrolled in the Plan on the Enrollment Date immediately following the Purchase Date on which such purchase has occurred, unless such participant notifies the Personnel Department on the appropriate form
that he or she elects not to re-enroll. A Participant who has suspended payroll deductions or withdrawn contributions during any Purchase Period must re-enroll on the appropriate form to participate in the Plan in the next Purchase Period.

  
 Each right to purchase shares of Common Stock under the Plan
during a Purchase Period shall have the following terms: 
  
 (i) the right to purchase shares of Common Stock during a particular Purchase Period shall expire on the earlier of (A) the completion of the purchase of shares on the Purchase Date occurring on the last trading day
of the Purchase Period; or (B) the date on which participation of such Participant in the Plan terminates for any reason; 
  
 (ii) in no event shall the right to purchase shares of Common Stock during a Purchase Period extend beyond twenty-seven (27) months from
the Enrollment Date; 
  
 (iii) payment for shares
purchased will be made only through payroll withholding and the crediting of interest and dividends, if applicable, in accordance with Sections 6 and 7; 
  
 (iv) purchase of shares will be accomplished only in accordance with Section 9; 
  

 4 

 (v) the price per share will be determined as provided in Section 9; 
  
 (vi) the right to purchase shares (taken together with all
other such rights then outstanding under this Plan and under all other similar stock purchase plans of Schlumberger Limited or any Subsidiary) will in no event give the Participant the right to purchase a number of shares during a Purchase Period in
excess of the number of shares of Common Stock derived by dividing $25,000 by the fair market value of the Common Stock (the ”Maximum Share Limitation”) on the applicable Grant Date determined in accordance with Section 9; and 

 
 (vii) the right to purchase shares will in all respects
be subject to the terms and conditions of the Plan, as interpreted by the Committee from time to time. 
  

	9.	Purchase of Shares 

  
 The right to purchase shares of Common Stock granted by the Company under the Plan is for the term of a Purchase Period. The fair market value of the
Common Stock to be purchased during such Purchase Period will be determined by averaging the highest and lowest composite sale prices per share of the Common Stock in the New York Stock Exchange Composite Transactions Quotations (“Fair Market
Value”) on the first trading day of the calendar month of July or such other trading date designated by the Committee (the “Grant Date”). The Fair Market Value of the Common Stock will again be determined in the same manner on the
last trading day of the calendar month of June or such other trading date designated by the Committee (the “Purchase Date”). These dates constitute the date of grant and the date of exercise for valuation purposes of Section 423 of the
Code. The price used for allocating each share to a Participant shall be 85% of the lesser of the prices so established. 
  
 As of the Purchase Date, the Committee shall apply the funds then credited to each Participant’s account to the purchase of whole shares of Common
Stock. The cost to the Participant for the shares purchased during a Purchase Period shall be 85% of the lower of: 
  
 (i) the Fair Market Value of Common Stock on the Grant Date; or 
  
 (ii) the Fair Market Value of Common Stock on the Purchase Date. 
  
 Certificates evidencing shares purchased shall be delivered to the Custodian
or to any other bank or financial institution designated by the Committee for this purpose or shall be delivered to the Participant (if the Participant has elected to receive the certificate) as soon as administratively feasible after the Purchase
Date, but Participants shall be treated as the record owners of their shares effective as of the Purchase Date. Shares that are held by the Custodian or any other designated bank or financial institution shall be held in book entry form. Any cash
equal to less than the price of a whole share of Common Stock shall be credited to a Participant’s account on the Purchase Date and carried forward in his or her account for application during the next Purchase Period. Any Participant who
purchases stock at the end of a Purchase Period and is not re-enrolled in the Plan for the next Purchase Period will receive a certificate for the number of shares held in his or her account as of the most recent Purchase Date and any cash,
dividends or interest remaining in his or her account. Any Participant who terminates employment or withdraws his or her contributions from the Plan prior to the next Purchase Date, 

  

 5 

 
will receive a certificate for the number of shares held in his or her account and a cash refund attributable to amounts equal to less than the price of a
whole share, and any accumulated contributions, dividends and interest. If for any reason a Participant’s allocations to the Plan exceed $21,250 during a Purchase Period or if the purchase of shares with such allocations would exceed the
Maximum Share Limitation, such excess amounts shall be refunded to the Participant as soon as practicable after such excess has been determined to exist. 
  
 If as of any Purchase Date the shares authorized for purchase under the Plan are exceeded, enrollments shall be reduced proportionately to eliminate the
excess. Any funds that cannot be applied to the purchase of shares due to excess enrollment shall be refunded as soon as administratively feasible, including interest determined in accordance with Section 7. The Committee in its discretion may also
provide that excess enrollments may be carried over to the next Purchase Period under this Plan or any successor plan according to the regulations as set forth under Section 423 of the Code. 
  

	10.	Withdrawal of Shares 

  
 A Participant may elect to withdraw shares held in his or her account at any time (without withdrawing from the Plan) by giving notice to the Personnel
Department on the appropriate form. Upon receipt of such notice from the Personnel Department, the Custodian, bank or other financial institution designated by the Committee for this purpose will arrange for the issuance and delivery of all shares
held in the Participant’s account as soon as administratively feasible. 
  

	11.	Termination of Participation 

  
 The right to participate in the Plan terminates immediately when a Participant ceases to be employed by the Company for any reason whatsoever (including
death, unpaid disability or when the Participant’s employer ceases to be a Subsidiary) or the Participant otherwise becomes ineligible. Participation also terminates immediately when the Participant voluntarily withdraws his or her
contributions from the Plan. Participation terminates immediately after the Purchase Date if the Participant is not re-enrolled in the Plan for the next Purchase Period or if the Participant has suspended payroll deductions during any Purchase
Period and has not re-enrolled in the Plan for the next Purchase Period. As soon as administratively feasible after termination of participation, the Committee shall pay to the Participant or his or her beneficiary or legal representative all
amounts credited to his or her account, including interest and dividends, if applicable, determined in accordance with Section 7, and shall cause a certificate for the number of shares held in his or her account to be delivered to the Participant or
to his or her beneficiary or legal representative. 
  

	12.	Unpaid Leave of Absence 

  
 Unless the Participant has voluntarily withdrawn his or her contributions from the Plan, shares will be purchased for his or her account on the Purchase
Date next following commencement of an unpaid leave of absence by such Participant provided such leave does not constitute a termination of employment. The number of shares to be purchased will be determined by applying to the purchase the amount of
the Participant’s contributions made up to the commencement of such unpaid leave of absence plus interest on such contributions and 

  

 6 

 
dividends, if applicable, both determined in accordance with Section 7. Participation in the Plan will terminate immediately after the purchase of shares on
such Purchase Date, unless the Participant has resumed eligible employment prior to the Purchase Date, in which case the Participant may resume payroll deductions immediately. 
  

	13.	Designation of Beneficiary 

  
 Each Participant may designate one or more beneficiaries in the event of death and may, in his or her sole discretion, change such designation at any
time. Any such designation shall be effective upon receipt by the local Personnel Department and shall control over any disposition by will or otherwise. 
  
 As soon as administratively feasible after the death of a Participant, amounts credited to his or her account, including interest and dividends, if
applicable, determined in accordance with Section 7, shall be paid in cash and a certificate for any shares shall be delivered to the Participant’s designated beneficiaries or, in the absence of such designation, to the executor, administrator
or other legal representative of the Participant’s estate. Such payment shall relieve the Company of further liability to the deceased Participant with respect to the Plan. If more than one beneficiary is designated, each beneficiary shall
receive an equal portion of the account unless the Participant has given express contrary instructions. 
  

	14.	Assignment 

  
 The rights of a Participant under the Plan will not be assignable or otherwise transferable by the Participant except by will or the laws of descent and
distribution. No purported assignment or transfer of such rights of a Participant under the Plan, whether voluntary or involuntary, by operation of law or otherwise, shall vest in the purported assignee or transferee any interest or right therein
whatsoever but immediately upon such assignment or transfer, or any attempt to make the same, such rights shall terminate and become of no further effect. If this provision is violated, the Participant’s election to purchase Common Stock shall
terminate and the only obligation of the Company remaining under the Plan will be to pay to the person entitled thereto the amount then credited to the Participant’s account. 
  
 No Participant may create a lien on any funds, securities, rights or other property held for the account of the Participant
under the Plan, except to the extent that there has been a designation of beneficiaries in accordance with the Plan, and except to the extent permitted by will or the laws of descent and distribution if beneficiaries have not been designated. A
Participant’s right to purchase shares under the Plan shall be exercisable only during the Participant’s lifetime and only by him or her. 
  

	15.	Treatment of Non-U. S. Participants 

  
 Participants who are employed by non-U.S. Companies, who are paid in foreign currency and who contribute foreign currency to the Plan through payroll
deductions, will have such contributions converted to U.S. dollars. The exchange rate for such conversion will be the rate quoted by a major financial institution selected by the Committee for the last trading day of the Purchase Period. If the
exchange rate for certain countries cannot be quoted in this manner, the conversion rate shall be determined as prescribed by the Committee. In no event will any 

  

 7 

 
procedure implemented for dealing with exchange rate fluctuations that may occur during the Purchase Period result in a purchase price below the price
determined pursuant to Section 9. 
  

	16.	Costs 

  
 All costs and expenses incurred in administering this Plan shall be paid by the Company. Any brokerage fees for the sale of shares purchased under the
Plan shall be paid by the Participant. 
  

	17.	Reports 

  
 Annually, the Company shall provide or cause to be provided to each Participant a report of his or her contributions and the shares of Common Stock
purchased with such contributions by that Participant on each Purchase Date. 
  

	18.	Equal Rights and Privileges 

  
 All eligible Employees shall have equal rights and privileges with respect to the Plan so that the Plan qualifies as an “employee stock purchase
plan” within the meaning of Section 423 or any successor provision of the Code and related regulations. Any provision of the Plan which is inconsistent with Section 423 or any successor provision of the Code shall without further act or
amendment by the Company be reformed to comply with the requirements of Section 423. This Section 18 shall take precedence over all other provisions in the Plan. 
  

	19.	Rights as Stockholder 

  
 A Participant will have no rights as a stockholder under the election to purchase until he or she becomes a stockholder as herein provided. A Participant
will become a stockholder with respect to shares for which payment has been completed as provided in Section 9 at the close of business on the last business day of the Purchase Period. 
  

	20.	Adjustments Upon Changes in Capitalization, Dissolution, Liquidation, Merger or Asset Sale. 

  

	(a)	Changes in Capitalization. Subject to any required action by the shareholders of the Company, the right to purchase shares of Common Stock covered by a current Purchase Period and
the number of shares which have been authorized for issuance under the Plan for any future Purchase Period, the maximum number of shares each Participant may purchase each Purchase Period (pursuant to Section 9), as well as the price per share and
the number of shares of Common Stock covered by each right under the Plan which have not yet been purchased shall be proportionately adjusted for any increase or decrease in the number of issued shares of Common Stock resulting from a stock split,
reverse stock split, stock dividend, combination or reclassification of the Common Stock, or any other increase or decrease in the number of shares of Common Stock effected without receipt of consideration by the Company. Except as expressly
provided herein, no issuance by the Company of shares of stock of any class, or securities convertible into shares of stock of any class, shall affect, and no adjustment by reason thereof shall be made with respect to, the number or price of shares
of Common Stock. 

  

 8 

	(b)	Dissolution or Liquidation. In the event of the proposed dissolution or liquidation of the Company, the Purchase Period then in progress shall be shortened by setting a new Purchase
Date (the “New Purchase Date”), and shall terminate immediately prior to the consummation of such proposed dissolution or liquidation, unless provided otherwise by the Board. The New Purchase Date shall be before the date of the
Company’s proposed dissolution or liquidation. Each Participant will be notified in writing, at least thirty (30) business days prior to the New Purchase Date, that the Purchase Date for the Participant’s right to purchase shares has been
changed to the New Purchase Date and that the applicable number of shares will automatically be purchased on the New Purchase Date, unless prior to such date the Participant has withdrawn from the Plan as provided in Section 10 hereof.

  

	(c)	Merger or Asset Sale. In the event of a proposed sale of all or substantially all of the assets of the Company, or the merger of the Company with or into another corporation, each
outstanding right to purchase shares shall be assumed or an equivalent right to purchase shares substituted by the successor corporation or a parent or subsidiary of the successor corporation. In the event that the successor corporation refuses to
assume or substitute the right to purchase shares, any Purchase Period then in progress shall be shortened by setting a new Purchase Date (the “New Purchase Date”) and any Purchase Period then in progress shall end on the New Purchase
Date. The New Purchase Date shall be before the date of the Company’s proposed sale or merger. Each Participant will be notified in writing, at least thirty (30) business days prior to the New Purchase Date, that the Purchase Date has been
changed to the New Purchase Date and that the applicable number of shares will be purchased automatically on the New Purchase Date, unless prior to such date the Participant has withdrawn from the Plan as provided in Section 10 hereof.

  

	21.	Modification and Termination 

  
 Except as provided in Section 20 hereof, the Board may amend or terminate the Plan at any time. No amendment shall be effective unless within one year
after it is adopted by the Board it is approved by the holders of a majority of the votes cast at a meeting if such amendment would otherwise cause the rights granted under the Plan to purchase shares of Common Stock to fail to meet the requirements
of Section 423 of the Code (or any successor provision). 
  
 In
the event the Plan is terminated, the Committee may elect to terminate all outstanding rights to purchase shares under the Plan either immediately or upon completion of the purchase of shares on the next Purchase Date, unless the Committee has
designated that the right to make all such purchases shall expire on some other designated date occurring prior to the next Purchase Date. If the rights to purchase shares under the Plan are terminated prior to expiration, all funds contributed to
the Plan that have not been used to purchase shares shall be returned to the Participants as soon as administratively feasible, including interest and dividends, if applicable, determined in accordance with Section 7. 
  

 9 

	22.	Board and Stockholder Approval; Effective Date 

  
 This Plan was originally approved by the Board on January 28, 1988, amended and restated by the Board on January 21, 1992 and approved by the holders of a
majority of the shares of outstanding Common Stock of Schlumberger Limited on April 15, 1992. This amendment and restatement approved by the Board on January 21, 1998 shall become effective as of July 1, 1998; provided, however, that the changes
contained herein shall not be effective unless approved by the holders of a majority of the votes cast at a meeting within the period ending January 21, 1999 (12 months after the date such amendments are approved by the Board). 
  

	23.	Governmental Approvals or Consents 

  
 This Plan and any offering or sale made to Employees under it are subject to any governmental approvals or consents that may be or become applicable in
connection therewith. Subject to the provisions of Section 21, the Board may make such changes in the Plan and include such terms in any offering under the Plan as may be desirable to comply with the rules or regulations of any governmental
authority. 
  

	24.	Other Provisions 

  
 The agreements to purchase shares of Common Stock under the Plan shall contain such other provisions as the Committee and the Board shall deem advisable,
provided that no such provision shall in any way be in conflict with the terms of the Plan. 
  

 10

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