EX-10.2



 Exhibit 10.2 

NOBLE CORPORATION PLC 

2017 DIRECTOR OMNIBUS PLAN 
 1. Plan.

 Noble Corporation plc, a public limited company incorporated under the laws of England and Wales (the “Company”), established this Noble
Corporation plc 2017 Director Omnibus Plan (this “Plan”), to be effective as of May 1, 2017 (the “Effective Date”); provided that this Plan subsequently receives the requisite shareholder approval. The Plan is the successor
to the Noble Corporation Sixth Amended and Restated Noble Corporation 1992 Nonqualified Stock Option and Share Plan for Non-Employee Directors and the Amended and Restated Noble Corporation Equity Compensation Plan for Non-Employee Directors (the
“Prior Plans”). Awards granted prior to the Effective Date pursuant to the Prior Plans are hereby ratified and confirmed and such Awards that remain subject to administration shall continue to be administered in accordance with the terms
of the Prior Plans. Provided that shareholder approval of the Plan is obtained, for periods on and after the Effective Date, no new Awards (as defined below) may be granted under the Prior Plans. This Plan shall automatically terminate should such
shareholder approval not be obtained (and the Prior Plans as in effect immediately prior to the Effective Date, shall continue in operation as then in effect). 

2. Purpose. 
 This Plan is designed to attract and retain
non-employee directors of the Company, to encourage the sense of proprietorship of such directors and to stimulate the active interest of such persons in the development and financial success of the Company and its Subsidiaries. These objectives are
to be accomplished by making awards under this Plan and thereby providing such directors with a proprietary interest in the growth and performance of the Company and its Subsidiaries. 

3. Definitions. 
 As used herein, the terms set forth
below shall have the following respective meanings: 
 “Annual Retainer” shall be the compensation to which a Director is entitled as
a retainer for his or her services as a member of the Board during the Plan Year.  
 “Award” means the grant of any Option,
Stock Award or Cash Award to a Participant pursuant to such applicable terms, conditions and limitations as the Board may establish in accordance with the objectives of this Plan. 

“Award Agreement” means the document (in written or electronic form) communicating the terms, conditions and limitations applicable to
an Award. The Board may, in its discretion, require that the Participant execute such Award Agreement, or may provide for procedures through which Award Agreements are made available but not executed. Any Participant who is granted an Award and who
does not affirmatively and in writing reject the applicable Award and Award Agreement shall be deemed to have accepted the terms of the Award as embodied in the Award Agreement. 

“Board” means the Board of Directors of the Company. 

“Cash Award” means an Award denominated in cash and made in respect of the Annual Retainer pursuant to Section 9(a). 

“Change in Control” means a Change in Control as defined in Attachment A to this Plan. 

“Code” means the United States Internal Revenue Code of 1986, as amended from time to time. 

“Committee” means the Compensation Committee of the Board, and any successor committee thereto or such other committee of the Board as
may be designated by the Board to administer this Plan in whole or in part including any subcommittee of the Board as designated by the Board. 

“Company” means Noble Corporation plc, a company organized under the laws of England and Wales. 

“Director” means an individual serving as a non-executive member of the Board who is not an employee, and an individual who has agreed
to become a Director and actually becomes a Director following such date of agreement. 







 “Disability” means a disability whereby the Director is unable to engage in any
substantial gainful activity by reason of any medically determinable physical or mental impairment that can be expected to result in death or can be expected to last for a continuous period of not less than 12 months. Notwithstanding the
foregoing, if an Award is subject to Section 409A of the Code, the definition of Disability shall conform to the requirements of Treasury Regulation § 1.409A-3(i)(4)(i) to the extent necessary to avoid the imposition of any tax by such
Section 409A of the Code. 
 “Dividend Equivalents” means, in the case of an Award comprising Restricted Stock Units, an
amount equal to all dividends and other distributions (or the economic equivalent thereof (excluding, unless the Board or Committee, as applicable, determines otherwise, special dividends)) that are payable to shareholders of record in respect of
the relevant record dates that occur during the Restriction Period, as applicable, on a like number of Shares that are subject to the Award. 

“Exchange Act” means the United States Securities Exchange Act of 1934, as amended from time to time. 

“Exercise Price” means the price at which a Participant may exercise his right to receive Shares, as applicable, under the terms of an
Option. 
 “Fair Market Value” of a Share means, as of a particular date, 

 

	 	(i)	if Shares are then listed or admitted to trading on a national securities exchange, the average of the reported high and low sales price per Share on the date in question (or if there was no reported sale on such date,
on the last preceding date on which any reported sale occurred) on the principal national securities exchange on which such Share is so listed or admitted to trading, 


 

	 	(ii)	if the Shares are not so listed or admitted to trading, the average of the closing high bid and low asked quotations as reported on an inter-dealer quotation system for such Share on the date in question, or, if there
are no quotations available for such date, on the last preceding date on which such quotations shall be available, 

  

	 	(iii)	if the Shares are not publicly traded, the most recent value determined by an independent appraiser appointed by the Board for such purpose, or 


 

	 	(iv)	if none of the above are applicable, the fair market value of a Share as determined in good faith by the Board in accordance with any applicable requirements of Section 409A of the Code. 


“Grant Date” means the date an Award is granted to a Participant pursuant to this Plan. 

“Nonqualified Stock Option” means an Option that is not intended to comply with the requirements set forth in Section 422 of the
Code. 
 “Option” means a right to purchase a specified number of Shares at a specified Exercise Price, which shall be in the
form of a Nonqualified Stock Option. 
 “Participant” means a Director to whom an Award has been made under this Plan.

 “Plan” means this Noble Corporation plc 2017 Director Omnibus Plan, as such plan may be amended from time to time.

 “Plan Year” means the calendar year. 

“Prior Plans” has the meaning set forth in Section 1. 

“Restricted Stock” means Shares allotted and issued or transferred pursuant to Paragraphs 8 or 9 that are restricted or subject to
forfeiture provisions. 
 “Restricted Stock Award” means an Award in the form of Restricted Stock. 

“Restricted Stock Unit” means a unit that provides for the allotment and issuance, transfer, or delivery of one Share or equivalent
value in cash upon the satisfaction of the terms, conditions, and restrictions applicable to such Restricted Stock Unit. 

“Restricted Stock Unit Award” means an Award in the form of Restricted Stock Units. 

“Restriction Period” means a period of time beginning as of the date upon which a Restricted Stock Award or Restricted Stock Unit
Award is made pursuant to this Plan and ending as of the date upon which such Award is no longer restricted or subject to forfeiture provisions. 







 “Share” means one registered share of the Company, or any stock or other security
hereafter allotted and issued or which may be allotted and issuable in substitution or exchange for a Share.  
 “Stock
Award” means an Award in the form of Shares, including a Restricted Stock Award, a Restricted Stock Unit Award that may be settled in Shares, but excluding Options. 

“Subsidiary” means (1) in the case of a corporation, any corporation of which the Company directly or indirectly owns shares
representing more than 50% of the combined voting power of the shares of all classes or series of capital stock of such corporation that have the right to vote generally on matters submitted to a vote of the shareholders of such corporation, and
(2) in the case of a partnership or other business entity not organized as a corporation, any such business entity of which the Company directly or indirectly owns more than 50% of the voting, capital or profits interests (whether in the form
of partnership interests, membership interests or otherwise). 
 4. Eligibility. 

(a) Directors. All Directors are eligible for grants of Awards under this Plan, provided, however, that if the Board makes an Award to an
individual whom it expects to become a Director following the Grant Date of such Award, such Award shall be subject to (among other terms and conditions) the individual actually becoming a Director. 

(b) The Board (or the Committee pursuant to Paragraph 7) shall determine the type or types of Awards to be made under this Plan and shall designate
from time to time the Directors who are to be granted Awards under this Plan. 
 5. Shares Available for Awards. 

(a) Available Shares. Subject to the provisions of Paragraph 15 hereof, the maximum number of Shares that may be allotted and issued, transferred,
or delivered pursuant to Awards under this Plan (including Options that may be exercised for or settled in Shares) shall be 900,000 Shares as of the Effective Date, which number of Shares may thereafter be increased in connection with the obtaining
of the requisite shareholder approval of the Plan (the “Maximum Share Limit”). Each Share subject to an Award granted under this Plan shall be counted against the Maximum Share Limit as 1 Share. Shares available under the Plan may be
unissued Shares from the Company’s authorized or conditional share capital, Shares held in treasury by the Company or one or more Subsidiaries of the Company.  

(b) Share Counting. If an Award expires or is terminated, cancelled or forfeited, the Shares associated with the expired, terminated, cancelled or
forfeited Awards shall again be available for Awards under the Plan, and the Maximum Share Limit shall be increased by the same amount as such Shares were counted against the Maximum Share Limit, it being understood that no increase or decrease
shall be made to the Maximum Share Limit with respect to an Award that can only be settled in cash. The following Shares shall not become available again for allotment and issuance, transfer, or delivery under the Plan: 

 

	 	(i)	Shares that are tendered or surrendered, or to which the right to require the Company to allot and issue, transfer or deliver Shares is forfeited or surrendered, in payment of the Exercise Price of an Option;


  

	 	(ii)	Shares that are withheld or delivered, or to which the right to require the Company to allot and issue, transfer or deliver Shares is forfeited or surrendered, to satisfy applicable tax withholding (for net exercise or
net settlement purposes) or nominal value obligations; and 

  

	 	(iii)	Shares purchased on the open market with the proceeds of an Exercise Price payment with respect to an Option. 


The Board may adopt reasonable counting procedures to ensure appropriate counting, avoid double counting (as, for example, in the case of tandem or substitute
awards) and make adjustment if the number of Shares actually delivered differs from the number of Shares previously counted in connection with an Award. 

The Board, the Committee and the appropriate officers of the Company shall from time to time take whatever actions are necessary to file any required
documents with governmental authorities, stock exchanges and transaction reporting systems to ensure that Shares are available for allotment and issuance, transfer, or delivery pursuant to Awards. 







 6. Administration. 

(a) Authority of the Administrator. Except as otherwise provided in this Plan, this Plan shall be administered by the Board. Subject to the provisions
hereof, the Board shall have full and exclusive power and authority to administer this Plan and to take all actions that are specifically contemplated hereby or are necessary or appropriate in connection with the administration hereof. The
Board shall also have full and exclusive power to interpret this Plan and the Award Agreements thereunder and to adopt such rules, regulations and guidelines for carrying out this Plan as it may deem necessary or proper. Subject to Paragraph 6(c)
hereof, the Board may, in its discretion, (x) provide for the extension of the exercisability of an Award, or (y) in the event of a Change in Control, retirement, death or termination of service for Disability, accelerate the vesting or
exercisability of an Award, eliminate or make less restrictive any restrictions contained in an Award, waive any restriction or other provision of this Plan or an Award or otherwise amend or modify an Award in any manner that is, in either case,
(1) not adverse to the Participant to whom such Award was granted, (2) consented to by such Participant or (3) authorized by Paragraph 15(c) hereof; provided, however, that no such action shall permit the term of any
Option to be greater than 10 years from its Grant Date. The Board may correct any defect or supply any omission or reconcile any inconsistency in this Plan or in any Award Agreement in the manner and to the extent the Board deems necessary or
desirable to further this Plan’s purposes. Any decision of the Board in the interpretation and administration of this Plan and the Award Agreements thereunder shall lie within its sole and absolute discretion and shall be final, conclusive and
binding on all parties concerned.  
 (b) Indemnity. No member of the Board or any person to whom the Board has delegated authority in
accordance with the provisions of Paragraph 7 of this Plan shall be liable for anything done or omitted to be done by such person, by any member of the Board, any member of the Committee or by any officer of the Company in connection with the
performance of any duties under this Plan, except for his or her own willful misconduct or as expressly provided by statute. 
 (c)
Prohibition on Repricing of Options. Subject to the provisions of Paragraph 15 hereof, the terms of outstanding Award Agreements may not be amended without the approval of the Company’s shareholders so as to (i) reduce the
Exercise Price of any outstanding Options or (ii) cancel any outstanding Options in exchange for cash or other Awards, or Options with an Exercise Price that is less than the Exercise Price of the original Options. 

(d) Procedures Adopted Under the Prior Plans. Any procedures adopted by the Board or otherwise for the administration of the Prior Plans shall continue
in effect for the administration of the Plan until amended or revoked by the applicable authority hereunder. 
 7. Delegation of Authority.

 The Board may delegate any of its authority to administer all or any portion of the Plan to the Committee, in which case references herein to
the Board shall be deemed to be references to the Committee, and the Board or Committee, as applicable, may delegate to the Chief Executive Officer and to other senior officers of the Company certain of its duties under this Plan (other than the
granting authority or amendment authority of the Board or Committee described in Paragraphs 8, 9 and 13); provided, that, such delegation is made in writing and specifically sets forth such delegated authority. The Board, the Committee
or officer of the Company, as applicable, may engage or authorize the engagement of a third party administrator to carry out administrative functions under this Plan. Any delegation of duties under the Prior Plans shall continue in effect as a
delegation under the Plan until amended or revoked by the applicable authority hereunder. Any such delegation hereunder shall only be made to the extent permitted by applicable law. 

8. Awards. 
 (a) Awards; Conditions. The Board
shall determine the type or types of Awards to be made under this Plan and shall designate from time to time the Directors who are to be the recipients of such Awards. Each Award shall be embodied in an Award Agreement, which shall contain such
terms, conditions and limitations as shall be determined by the Board, in its sole discretion, and, if required by the Board, shall be signed by the Participant to whom the Award is granted and by a member of the Board for and on behalf of the
Company. Awards may consist of those listed in this Paragraph 8(a) and may be granted singly, in combination or in tandem. Awards may also be made in combination or in tandem with, in replacement of, or as alternatives to, grants or rights
under this Plan; provided, however, that, except as contemplated in Paragraph 15 hereof, no Option may be issued in exchange for the cancellation of an Option with a higher Exercise Price nor may the Exercise Price of any Option be reduced.
All or part of an Award may be subject to conditions established by the Board.  







 If a Participant ceases to be a Director, any unexercised, unvested or unpaid Awards shall be treated as set
forth in the applicable Award Agreement or in any other written agreement the Company has entered into with the Participant, it being understood that the Board may, in its sole and absolute discretion, prescribe additional terms, conditions,
restrictions and limitations applicable to the Award, including without limitation rules pertaining to the cessation of being a Director by reason of retirement, death or Disability. All rights to exercise an Option shall, terminate five years after
the date the Participant ceases to be a Director (or the remaining term of the Option if shorter), unless the Award Agreement provides otherwise in connection with any such termination of service by reason of retirement, death or Disability.
Notwithstanding the foregoing, in the event the Participant ceases to be a Director on account of fraud, dishonesty or other acts detrimental to the interests of the Company or an affiliate, the Option shall thereafter be null and void for all
purposes. 
 (b) Types of Awards. 
 (i)
Options. An Award may be in the form of an Option. An Option awarded pursuant to this Plan shall consist of a Nonqualified Stock Option. The price at which Shares may be purchased upon the exercise of an Option shall be not less than the Fair Market
Value of the Shares on the Grant Date; provided that in relation to an Option comprising the right to subscribe for Shares, the price shall not be less than the nominal value of a Share. The term of an Option shall not exceed 10 years from the Grant
Date; provided that the period during which an Option may be exercised may be extended by the Board or pursuant to procedures of the Board if the last day of such period occurs at a time when the Company has imposed a prohibition on trading of the
Company’s securities in order to avoid violations of applicable Federal, state, local or foreign law; provided further, that the period during which the Option may be extended is not more than 30 days after the date on which such prohibition on
trading is terminated. Options may not include provisions that “reload” the Option upon exercise. Subject to the foregoing provisions, the terms, conditions and limitations applicable to any Option, including, but not limited to, the term
of any Option and the date or dates upon which the Option becomes vested and exercisable, shall be determined by the Board. 
 (ii) Stock
Awards. An Award may be in the form of a Stock Award. The terms, conditions and limitations applicable to any Stock Award, including, but not limited to, vesting or other restrictions, shall be determined by the Board, and subject to Restriction
Period and any other applicable requirements described in this Plan. In relation to a Stock Award, an Award holder may be required by or pursuant to procedures of the Board, in its discretion, to pay the nominal value of any Shares awarded
hereunder, in accordance with the provisions of Paragraph 11. To the extent otherwise, and subject to any provision of any applicable law or regulation of any governmental authority or any national securities exchange, there shall not be any
purchase price charged for any Stock Award under the Plan. 
 (iii) Restricted Stock Unit Awards. An Award may be in the form of a Restricted
Stock Unit Award. The terms, conditions and limitations applicable to a Restricted Stock Unit Award, including, but not limited to, the Restriction Period and the right to Dividend Equivalents, if any, shall be determined by the Board. Subject to
the terms of this Plan, the Board, in its sole discretion, may settle Restricted Stock Units in the form of cash or by the allotment and issuance, transfer or delivery of Shares (or in a combination thereof) equal to the value of the vested
Restricted Stock Units. In relation to an award of Restricted Stock Units to be satisfied by the allotment and issuance, transfer or delivery by the Company of Shares, an Award holder may be required by or pursuant to procedures of the Board, in its
discretion, to pay the nominal value of any Shares to be allotted and issued, transferred or delivered, in accordance with the provisions of Paragraph 11. To the extent otherwise, and subject to any provision of any applicable law or regulation of
any governmental authority or any national securities exchange, there shall not be any purchase price charged for any Restricted Stock Units award under the Plan. 

The maximum aggregate Fair Market Value of the Shares subject to Awards during any Plan Year that may be granted to any Director pursuant to this
Section 8 shall in no event exceed $350,000 taking into account the date of grant value of the Shares subject to Awards under this Section 8. 

9. Director Compensation. 
 (a) Annual Retainer;
Voluntary Share Purchases. The amount of the Annual Retainer to be paid to each Director for each Plan Year may, in the discretion of the Board, be payable pursuant to Cash Awards granted under this Plan. To the extent the Annual Retainer is
payable to a Director in the form of a Cash Award, the Board may permit the Director to elect to have up to 100% of the amount of such Cash Award to be applied to the purchase of unrestricted Shares pursuant to the provisions of this Paragraph 9(a).
Such elections shall be on a form prescribed for this purpose by the Board and must be made no later than the 30th calendar day (or such other day as the Board may prescribe) prior to the end of the Plan Year to which the election applies in
accordance with the procedures established by the Board, and if applicable, shall be in accordance with Section 409A of the Code. The amount to be applied to the purchase of Shares shall be designated by the Director as a percentage of
his or her Annual Retainer (or applicable payment thereof) in integral multiples of 5%. 







 (b) Other Fees and Reimbursement of Expenses. For the avoidance of doubt, Directors may be
entitled, for their service as directors, to compensation other than the Annual Retainer in the discretion of the Board and to the reimbursement of certain expenses in accordance with the policies, practices and procedures of the Company from time
to time in effect. Expenses may be reimbursed in the discretion of the Board in the form of Cash Awards that provide for an immediate payment; provided, that, such reimbursement is made no later than the last day of the year following
the year in which such expenses are incurred. 
 10. Award Payment; Dividends and Dividend Equivalents. 

(a) General. Payment of Awards by the Company may be made in the form of cash or by the allotment and issuance, transfer of delivery of Shares (in
book-entry or certificated form), or a combination thereof, and may include such restrictions as the Board shall determine, including, but not limited to, in the case of Shares, restrictions on transfer and forfeiture provisions. For a Restricted
Stock Award, the certificates evidencing the shares of such Restricted Stock (to the extent that such shares are so evidenced) shall contain appropriate legends and restrictions that describe the terms and conditions of the restrictions applicable
thereto. For a Restricted Stock Unit Award that may be settled by the allotment and issuance, transfer or delivery of Shares, the Restricted Stock Units shall be evidenced by book entry registration or in such other manner as the Board may
determine.  
 (b) Dividends and Dividend Equivalents. Rights to (1) dividends will be extended to and made part of any Restricted Stock
Award and (2) Dividend Equivalents may be extended to and made part of any Restricted Stock Unit Award, subject in each case to such terms, conditions and restrictions as the Board may establish as set forth in the Award Agreement thereto, it
being understood that such dividends and Dividend Equivalents shall be paid to the extent the Shares underlying the relevant award are vested and paid, as applicable. Dividends and/or Dividend Equivalents shall not be made part of any Options.

 11. Nominal Value; Option Exercise. If permitted by the Board and elected by the Participant, the Participant may pay the nominal value
associated with any allotment, issuance, transfer or delivery of Shares hereunder by means of surrendering, or otherwise forfeiting or surrendering the right to require the Company to allot and issue, transfer, or deliver a portion of such Shares,
or tendering Shares, valued at Fair Market Value on the date of exercise, or any combination of the foregoing methods, or otherwise entering into arrangements to pay the nominal value in a form acceptable to the Company. The Board, in its sole
discretion, shall determine acceptable methods for Participants to tender Shares, including tender by attestation of Shares held by a broker. The Board may provide for procedures to permit the acquisition of Shares pursuant to such Awards by use of
the proceeds to be received from the sale of Shares issuable pursuant to an Award (including cashless acquisition procedures approved by the Board involving a broker or dealer approved by the Board). The Board may adopt additional rules and
procedures regarding the payment of nominal value from time to time, provided that such rules and procedures are not inconsistent with the provisions of this Paragraph 11. The Exercise Price shall be paid in full at the time of exercise in cash or,
if permitted by the Board and elected by the Participant, in a manner consistent, mutatis mutandis, with the foregoing provisions regarding payment of nominal value. 

12. Taxes. The Company shall have the right to require payment of applicable taxes, social security obligations and pension plan obligations (or
similar charges), if any, as a condition to settlement of any Award. The amount, if any, determined by the Board to be due upon the grant or vesting of any Award, or at any other applicable time, shall be paid in full at the applicable time in cash
or, if permitted by the Board and elected by the Participant, the Participant may arrange for such payment by means of surrendering, or otherwise forfeiting or surrendering the right to require the Company to allot and issue, transfer, or deliver
Shares with respect to the Award, or tendering Shares, valued at Fair Market Value on the date of exercise, or any combination of the foregoing methods, or otherwise entering into arrangements to pay the withholding amount, if any, in a form
acceptable to the Company. The Board may take or require such other action as may be necessary in the opinion of the Company to satisfy all obligations for withholding of such taxes, if any, and other charges; provided, however, that the
number of Shares a Participant surrenders, or as to which a Participant otherwise forfeits or surrenders the right to require the Company to allot and issue, transfer, or deliver Shares, must equal, in Fair Market Value, no more than the amount of
withholding due based on the withholding rate(s) applied by the Company, in its discretion, in accordance with the applicable withholding laws and regulations in effect at the time such withholding is required, if at all. If Shares subject to the
Award are used as set forth above to satisfy tax or other withholding, such Shares shall be valued based on the Fair Market Value on the date as of which the amount of tax withholding, if any, is determined. Other Shares tendered to pay taxes will
be valued based on the Fair Market Value on the date received by the Company. 







 13. Amendment, Modification, Suspension or Termination. The Board may amend, modify, suspend or terminate
this Plan (and the Board may amend an Award Agreement) for the purpose of meeting or addressing any changes in legal requirements or for any other purpose permitted by law, except that (1) no amendment or alteration that would adversely affect
the rights of any Participant under any Award previously granted to such Participant shall be made without the consent of such Participant and (2) no amendment or alteration shall be effective prior to its approval by the shareholders of the
Company to the extent shareholder approval is otherwise required by applicable legal requirements or the requirements of the securities exchange on which the Company’s stock is listed, including any amendment that expands the types of Awards
available under this Plan, materially increases the number of Shares available for Awards under this Plan, materially expands the classes of persons eligible for Awards under this Plan, materially extends the term of this Plan, materially changes
the method of determining the Exercise Price of Options, deletes or limits any provisions of this Plan that prohibit the repricing of Options or decreases any minimum vesting requirements for any Stock Award. 

14. Assignability. Unless otherwise determined by the Board and expressly provided for in an Award Agreement, no Award or any other benefit under this
Plan shall be assignable or otherwise transferable except (1) by will or the laws of descent and distribution or (2) pursuant to a domestic relations order issued by a court of competent jurisdiction that is not contrary to the terms and
conditions of this Plan or applicable Award and in a form acceptable to the Board. The Board may prescribe and include in applicable Award Agreements other restrictions on transfer. Any attempted assignment of an Award or any other benefit under
this Plan in violation of this Paragraph 14 shall be null and void. Notwithstanding the foregoing, no Award may be transferred for value or consideration. 

15. Adjustments. 
 (a) No Limit on Corporate Power.
The existence of outstanding Awards shall not affect in any manner the right or power of the Company or its shareholders to make or authorize any or all adjustments, recapitalizations, reorganizations or other changes in the capital stock of the
Company or its business or any merger or consolidation of the Company, or any issue of bonds, debentures, preferred or prior preference stock (whether or not such issue is prior to, on a parity with or junior to the Shares) or the dissolution or
liquidation of the Company, or any sale or transfer of all or any part of its assets or business, or any other corporate act or proceeding of any kind, whether or not of a character similar to that of the acts or proceedings enumerated above.

 (b) Adjustments. If at any time while the Plan is in effect there shall be any increase or decrease in the number of allotted and issued and
outstanding Shares of the Company effected without receipt of consideration therefor by the Company, through the declaration of a dividend in Shares or through any recapitalization, amalgamation, merger, demerger or conversion or otherwise in which
the Company is the surviving corporation, resulting in a split-up, combination or exchange of Shares of the Company, then and in each such event: 

(i) An appropriate adjustment shall be made in the maximum number of Shares then subject to being optioned or awarded under the Plan, to the
end that the same proportion of the Company’s allotted and issued and outstanding Shares shall continue to be subject to being so optioned and awarded; 

(ii) An appropriate adjustment shall be made in the number of Shares and the exercise price per Share thereof then subject to purchase pursuant
to each Option previously granted and then outstanding, to the end that the same proportion of the Company’s allotted and issued and outstanding Shares in each such instance shall remain subject to purchase at the same aggregate exercise price;
and 
 (iii) An appropriate adjustment shall be made in the number of Shares then subject to each Stock Award previously awarded and then
outstanding, to the end that the same proportion of the Company’s allotted and issued and outstanding Shares in each such instance shall remain subject to allotment and issuance, transfer or delivery in settlement of such award. 

(c) Actions not Triggering Adjustments. Except as is otherwise expressly provided herein, the allotment and issuance by the Company of shares of its
capital securities of any class, or securities convertible into shares of capital securities of any class, either in connection with a direct sale or upon the exercise of rights or warrants to subscribe therefor, or upon conversion of shares or
obligations of the Company convertible into such shares or other securities, shall not affect, and no adjustment by reason thereof shall be made with respect to the number of or option price of Shares then subject to outstanding Options or the
number of Shares then subject to outstanding awards of Restricted Stock Units. 







 (d) Certain Corporate Transactions. In the event of a corporate merger, consolidation, acquisition of
property or stock, separation, reorganization or liquidation, the Board may make such adjustments to Awards or other provisions for the disposition of Awards as it deems equitable, and shall be authorized, in its discretion, (1) to provide for
the substitution of a new Award or other arrangement (which, if applicable, may be exercisable for such property or stock as the Board determines) for an Award or the assumption of the Award, regardless of whether in a transaction to which
Section 424(a) of the Code applies, (2) to provide, prior to the transaction, for the acceleration of the vesting and exercisability of, or lapse of restrictions with respect to, the Award and, if the transaction is a cash merger, provide
for the termination of any portion of the Award that remains unexercised at the time of such transaction, or (3) to cancel any such Awards and to deliver to the Participants cash in an amount that the Board shall determine in its sole
discretion is equal to the fair market value of such Awards on the date of such event, which in the case of Options shall be the excess of the Fair Market Value of Shares on such date over the Exercise Price therefor.  

(e) Section 409A. No adjustment or substitution pursuant to this Paragraph 15 shall be made in a manner that results in noncompliance with the
requirements of Section 409A of the Code, to the extent applicable. 
 16. Restrictions. No Shares or other form of payment shall be
allotted and issued, transferred, or delivered with respect to any Award unless the Company shall be satisfied based on the advice of its counsel that such allotment and issuance, transfer, or delivery will be in compliance with applicable federal
and state securities laws. Certificates evidencing Shares delivered under this Plan (to the extent that such Shares are so evidenced) may be subject to such stop transfer orders and other restrictions as the Board may deem advisable under the rules,
regulations and other requirements of the Securities and Exchange Commission, any securities exchange or transaction reporting system upon which the Shares is then listed or to which it is admitted for quotation and any applicable federal or state
securities law. The Board may cause a legend or legends to be placed upon such certificates (if any) to make appropriate reference to such restrictions. The Board may, in its discretion, condition the Company’s obligation to allot and issue,
transfer or deliver Shares under the Plan upon its receipt from the person to whom such Shares are to be allotted and issued, transferred or delivered of an executed investment letter containing such representations and agreements as the Company may
determine to be necessary or advisable in order to enable the Company to allot, issue, transfer or deliver such Shares to such person in compliance with the Securities Act of 1933 and other applicable federal, state or local securities laws or
regulations. 
 17. Unfunded Plan. This Plan is unfunded. Although bookkeeping accounts may be established with respect to Participants who are
entitled to cash, Shares or rights thereto under this Plan, any such accounts shall be used merely as a bookkeeping convenience. The Company shall not be required to segregate any assets that may at any time be represented by cash, Shares or rights
thereto, nor shall this Plan be construed as providing for such segregation, nor shall the Company or the Board be deemed to be a trustee of any cash, Shares or rights thereto to be granted under this Plan. Any liability or obligation of the Company
to any Participant with respect to an Award of cash, Shares or rights thereto under this Plan shall be based solely upon any contractual obligations that may be created by this Plan and any Award Agreement, and no such liability or obligation of the
Company shall be deemed to be secured by any pledge or other encumbrance on any property of the Company. None of the Company or the Board shall be required to give any security or bond for the performance of any obligation that may be created by
this Plan. With respect to this Plan and any Awards granted hereunder, Participants are general and unsecured creditors of the Company and have no rights or claims except as otherwise provided in this Plan or any applicable Award Agreement. 

18. Section 409A of the Code. 
 (a) Intention
to Comply. Awards made under this Plan are intended to comply with or be exempt from Section 409A of the Code, and ambiguous provisions hereof, if any, shall be construed and interpreted in a manner consistent with such intent. No payment,
benefit or consideration shall be substituted for an Award if such action would result in the imposition of taxes under Section 409A of the Code. Notwithstanding anything in this Plan to the contrary, if any Plan provision or Award under this
Plan would result in the imposition of an additional tax under Section 409A of the Code, that Plan provision or Award shall be reformed, to the extent permissible under Section 409A of the Code, to avoid imposition of the additional tax,
and no such action shall be deemed to adversely affect the Participant’s rights to an Award.  







 (b) Unit and Cash Awards. Unless the Board provides otherwise in an Award Agreement, each Restricted Stock
Unit Award or Cash Award (or portion thereof if the Award is subject to a vesting schedule) shall be settled no later than the 15th day of the third month after the end of the first calendar year in which the Award (or such portion thereof) is no
longer subject to a “substantial risk of forfeiture” within the meaning of Section 409A of the Code. If the Board determines that a Restricted Stock Unit Award or Cash Award is intended to be subject to Section 409A of the Code,
the applicable Award Agreement shall include terms that are designed to satisfy the requirements of Section 409A of the Code. 
 19. Awards
to Foreign Nationals and Directors Outside the United States. The Board may, without amending this Plan, (1) establish special rules applicable to Awards granted to Participants who are foreign nationals or otherwise providing services
outside the United States, or both, including rules that differ from (but do not enlarge on) those set forth in this Plan, and (2) grant Awards to such Participants in accordance with those rules. 

20. Governing Law. This Plan and all determinations made and actions taken pursuant hereto, shall be undertaken by application of the laws of the State
of Texas, except to the extent Texas law is preempted by Federal law of the United States, or the laws of England and Wales. 
 21. Right to Continued
Service. Nothing in this Plan or an Award Agreement or any document describing or relating to the Plan, or any part hereof, shall confer upon any Director any right to continue as a Director of the Company. 

22. Rights of Third Parties. It is not intended that any of the terms of this Plan should be enforceable by any third party pursuant to the UK Contract
(Rights of Third Parties) Act 1999. 
 23. Consent to Holding and Processing of Personal Data. By participating in the Plan, participants give
their consent to the holding and processing of data relating to them (including personal data) in relation to and as a consequence of the Plan and to the disclosure of data (even outside the European Economic Area) to the Company, or any Subsidiary,
to any possible purchaser of the Company or its business or of any Subsidiary and their respective advisors in relation to the Plan. 
 24. Term.
Unless previously terminated, the Plan shall terminate and no additional Awards may be granted on the expiration of 10 years after May 1, 2017, the Effective Date of the Plan. The Plan shall continue in effect with respect to Awards granted
before termination of the Plan and until such Awards have been settled, terminated or forfeited. 
 25. Usage. Words used in this Plan in the
singular shall include the plural and vice versa, unless the context otherwise requires, and the gender of words used shall be construed to include whichever may be appropriate under any particular circumstances of the masculine, feminine or neuter
genders. 
 26. Clawback. Notwithstanding anything to the contrary contained in this Plan, any Award shall be subject to recovery or clawback by the
Company under any clawback policy adopted by the Company whether before or after the date of grant of the Award. 
 27. Headings. The headings in
this Plan are inserted for convenience of reference only and shall not affect the meaning or interpretation of this Plan. 
 ATTACHMENT A

 DEFINITION OF CHANGE IN CONTROL 

For purposes of this Plan, a “Change in Control” shall be deemed to have occurred upon the occurrence of any of the following
events: 
 (i) the acquisition by any individual, entity or group (within the meaning of Section 13(d)(3) or 14(d)(2) of the Exchange Act)
(a “Person”) of beneficial ownership (within the meaning of Rule 13d-3 promulgated under the Exchange Act) of 25% or more of either (A) the then outstanding registered Shares of the Company (the “Outstanding Shares”) or
(B) the combined voting power of the then outstanding voting securities of the Company entitled to vote generally in the election of directors (the “Outstanding Voting Securities”); provided, however, that for purposes
of this paragraph (i) the following acquisitions shall not constitute a Change in Control: (w) any acquisition directly from the Company (excluding an acquisition by virtue of the exercise of a conversion privilege), (x) any
acquisition by the Company, (y) any acquisition by any employee benefit plan (or related trust) sponsored or maintained by the Company or any company controlled by the Company, or (z) any acquisition by any company pursuant to a
reorganization, merger, amalgamation or consolidation, if, following such reorganization, merger, amalgamation or consolidation, the conditions described in clauses (A), (B) and (C) of subparagraph (iii) of this definition are
satisfied; or 







 (ii) individuals who, as of the date of this Agreement, constitute the Board (the “Incumbent
Board”) cease for any reason to constitute a majority of such Board; provided, however, that any individual becoming a director of the Company subsequent to the date hereof whose election, or nomination for election by the
Company’s shareholders, was approved by a vote of a majority of the directors of the Company then comprising the Incumbent Board shall be considered as though such individual were a member of the Incumbent Board, but excluding, for this
purpose, any such individual whose initial assumption of office occurs as a result of either an actual or threatened election contest or other actual or threatened solicitation of proxies or consents by or on behalf of a Person other than the Board;
or 
 (iii) consummation of a reorganization, merger, amalgamation or consolidation of the Company, with or without approval by the shareholders of
the Company, in each case, unless, following such reorganization, merger, amalgamation or consolidation, (A) more than 50% of, respectively, the then outstanding shares of common stock (or equivalent security) of the company resulting from such
reorganization, merger, amalgamation or consolidation and the combined voting power of the then outstanding voting securities of such company entitled to vote generally in the election of directors is then beneficially owned, directly or indirectly,
by all or substantially all of the individuals and entities who were the beneficial owners, respectively, of the Outstanding Shares and Outstanding Voting Securities immediately prior to such reorganization, merger, amalgamation or consolidation in
substantially the same proportions as their ownership, immediately prior to such reorganization, merger, amalgamation or consolidation, of the Outstanding Shares and Outstanding Voting Securities, as the case may be, (B) no Person (excluding
the Company, any employee benefit plan (or related trust) of the Company or such company resulting from such reorganization, merger, amalgamation or consolidation, and any Person beneficially owning, immediately prior to such reorganization, merger,
amalgamation or consolidation, directly or indirectly, 25% or more of the Outstanding Shares or Outstanding Voting Securities, as the case may be) beneficially owns, directly or indirectly, 25% or more of, respectively, the then outstanding shares
of common stock (or equivalent security) of the company resulting from such reorganization, merger, amalgamation or consolidation or the combined voting power of the then outstanding voting securities of such company entitled to vote generally in
the election of directors, and (C) a majority of the members of the board of directors of the company resulting from such reorganization, merger, amalgamation or consolidation were members of the Incumbent Board at the time of the execution of
the initial agreement providing for such reorganization, merger, amalgamation or consolidation; or 
 (iv) consummation of a sale or other disposition of
all or substantially all the assets of the Company, with or without approval by the shareholders of the Company, other than to a company, with respect to which following such sale or other disposition, (A) more than 50% of, respectively, the
then outstanding shares of common stock (or equivalent security) of such company and the combined voting power of the then outstanding voting securities of such company entitled to vote generally in the election of directors is then beneficially
owned, directly or indirectly, by all or substantially all the individuals and entities who were the beneficial owners, respectively, of the Outstanding Shares and Outstanding Voting Securities immediately prior to such sale or other disposition in
substantially the same proportion as their ownership, immediately prior to such sale or other disposition, of the Outstanding Shares and Outstanding Voting Securities, as the case may be, (B) no Person (excluding the Company, any employee
benefit plan (or related trust) of the Company or such company, and any Person beneficially owning, immediately prior to such sale or other disposition, directly or indirectly, 25% or more of the Outstanding Shares or Outstanding Voting Securities,
as the case may be) beneficially owns, directly or indirectly, 25% or more of, respectively, the then outstanding shares of common stock (or equivalent security) of such company or the combined voting power of the then outstanding voting securities
of such company entitled to vote generally in the election of directors, and (C) a majority of the members of the board of directors of such company were members of the Incumbent Board at the time of the execution of the initial agreement or
action of the Board providing for such sale or other disposition of assets of the Company; or 
 (v) approval by the shareholders of the Company of a
complete liquidation or dissolution of the Company. 
 Notwithstanding the foregoing, or anything to the contrary set forth herein, a transaction or series
of related transactions will not be considered to be a Change in Control if (i) the Company becomes a direct or indirect wholly owned subsidiary of a holding company and (ii) (A) immediately following such transaction(s), the then
outstanding shares of common stock (or equivalent security) of such holding company and the combined voting power of the then outstanding voting securities of such holding company entitled to vote generally in the election of directors is then
beneficially owned, directly or indirectly, by all or substantially all the individuals and entities who were the 







 
beneficial owners, respectively, of the Outstanding Shares and Outstanding Voting Securities immediately prior to such transaction(s) in substantially the same proportion as their ownership
immediately prior to such transaction(s) of the Outstanding Shares and Outstanding Voting Securities, as the case may be, or (B) the shares of Outstanding Voting Securities outstanding immediately prior to such transaction(s) constitute, or are
converted into or exchanged for, a majority of the outstanding voting securities of such holding company immediately after giving effect to such transaction(s). 

Notwithstanding the foregoing, if an Award is subject to Section 409A of the Code, the definition of Change in Control shall conform to the requirements
of Section 409A(a)(2)(A)(v) of the Code and the Treasury Regulations promulgated thereunder to the extent necessary to avoid the imposition of any tax by such Section 409A of the Code.