Exhibit 4.2 

   

  PRA HEALTH SCIENCES, INC. 2018 STOCK INCENTIVE PLAN

   

  		1	Purpose.


   

  (a)       The Plan, which was initially adopted by PRA
      Health Sciences, Inc., was amended and restated in its current form in connection with the transaction entered into by ICON plc (the “Company”), ICON US Holdings Inc., Indigo Merger Sub, Inc. and PRA Health Sciences, Inc., pursuant to which PRA
      Health Sciences, Inc. became a Subsidiary of the Company, a public limited company incorporated in Ireland, and the Plan, together with all awards granted thereunder, was assumed by the Company with effect from 1 July 2021 (the “Assumption Date”).

   

  (b)       The purpose of the PRA Health Sciences, Inc.
      2018 Stock Incentive Plan is to provide a means through which the Company, and the other members of the Company Group, may attract and retain key personnel, and to provide a means whereby directors, officers, employees, consultants and advisors of
      the Company and the other members of the Company Group can acquire and maintain an equity interest in the Company, or be paid incentive compensation measured by reference to the value of Common Stock, thereby strengthening their commitment to the
      welfare of the Company Group and aligning their interests with those of the Company’s stockholders.

   

  		2	Definitions. The following definitions shall be applicable throughout the Plan.


   

  (a)       “Adjustment Event” has the meaning given to such term in Section 11(a) of the Plan.

   

  (b)       “Affiliate” means any Person that directly or indirectly controls, is controlled by or is under common control with the Company. The term “control” (including, with
      correlative meaning, the terms “controlled by” and “under common control with”), as applied to any Person, means the possession, directly or indirectly, of the power to direct or cause the direction of the management and policies of such Person,
      whether through the ownership of voting or other securities, by contract or otherwise.

   

  (c)       “Annual Director Grant” has the meaning given to such term in Section 10 of the Plan.

   

  (d)       “Award” means, individually or collectively, any Incentive Stock Option, Nonqualified Stock Option, Stock Appreciation Right, Restricted Stock, Restricted Stock Unit, and
      Other Equity-Based Award granted under the Plan.

   

  (e)       “Award Agreement” means the document or documents by which each Award is evidenced.

   

  (f)       “Board” means the Board of Directors of the Company.

   

  (g)       “Cause” means, as to any Participant, unless the applicable Award Agreement states otherwise, (i) “Cause,” as defined in any employment or consulting agreement between the
      Participant and the Service Recipient in effect at the time of such Termination; or (ii) in the absence of any such employment or consulting agreement (or the absence of any definition of “Cause” contained therein), the Participant’s (A) willful
      neglect in the performance of the Participant’s duties for the Service Recipient or willful or repeated failure or refusal to perform such duties; (B) engagement in conduct in connection with the Participant’s employment or service with the Service
      Recipient, which results in, or could reasonably be expected to result in, material harm to the business or reputation of the Company or any other member of the Company Group; (C) conviction of, or plea of guilty or no contest to, (I) any felony; or
      (II) any other crime that results in, or could reasonably be expected to result in, material harm to the business or reputation of the Company or any other member of the Company Group; (D) material violation of the written policies of the Service
      Recipient, including, but not limited to, those relating to sexual harassment or the disclosure or misuse of confidential information, or those set forth in the manuals or statements of policy of the Service Recipient; (E) fraud or misappropriation,
      embezzlement or misuse of funds or property belonging to the Company or any other member of the Company Group; or (F) act of personal dishonesty that involves personal profit in connection with the Participant’s employment or service to the Service
      Recipient.

   

  
     

    
      
 

  

   

  

  (h)       “Change in Control” means:

   

  (i)       the acquisition (whether by purchase, merger, consolidation, combination or other similar transaction) by any Person of beneficial ownership (within the meaning of Rule 13d-3
      promulgated under the Exchange Act) of more than 50% (on a fully diluted basis) of either (A) the then outstanding shares of Common Stock, taking into account as outstanding for this purpose such Common Stock issuable upon the exercise of options or
      warrants, the conversion of convertible stock or debt, and the exercise of any similar right to acquire such Common Stock; or (B) the combined voting power of the then outstanding voting securities of the Company entitled to vote generally in the
      election of directors; provided, however, that for purposes of this Plan, the following acquisitions shall not constitute a Change in Control: (I) any acquisition by the Company or any Affiliate of the Company; (II) any acquisition by any
      employee benefit plan sponsored or maintained by the Company or any Affiliate of the Company; or (III) in respect of an Award held by a particular Participant, any acquisition by the Participant or any group of Persons including the Participant (or
      any entity controlled by the Participant or any group of Persons including the Participant);

   

  (ii)      during any period of twelve (12) months, individuals who, at the beginning of such period, constitute the Board (the “Incumbent Directors”) cease for any reason to constitute
      at least a majority of the Board, provided that any person becoming a director subsequent to the Effective Date, whose election or nomination for election was approved by a vote of at least two-thirds of the Incumbent Directors then on the Board
      (either by a specific vote or by approval of the proxy statement of the Company in which such person is named as a nominee for director, without written objection to such nomination) shall be an Incumbent Director; provided, however, that no
      individual initially elected or nominated as a director of the Company as a result of an actual or threatened election contest, as such terms are used in Rule 14a-12 of Regulation 14A promulgated under the Exchange Act, with respect to directors or
      as a result of any other actual or threatened solicitation of proxies or consents by or on behalf of any person other than the Board shall be deemed to be an Incumbent Director; or

   

  (iii)      the sale, transfer or other disposition of all or substantially all of the assets of the Company Group (taken as a whole) to any Person that is not an Affiliate of the Company.

   

  (i)       “Change in Control Consideration” has the meaning given to such term in Section 11(b) of the Plan.

   

  (j)       “Code” means the Internal Revenue Code of 1986, as amended, and any successor thereto. Reference in the Plan to any section of the Code shall be deemed to include any
      regulations or other interpretative guidance under such section, and any amendments or successor provisions to such section, regulations or guidance.

   

  (k)       “Committee” means the Compensation Committee of the Board or any properly delegated subcommittee thereof or, if no such Compensation Committee or subcommittee thereof exists,
      the Board.

   

  (l)       “Common Stock” or “Shares” means ordinary shares in the capital of the Company (or ordinary shares as represented by American Depository Shares and as evidenced by American
      Depository Receipts).

   

  (m)       “Company” means ICON plc, a public limited company registered in Ireland, and any successor thereto.

   

  
     

    
      
 

  

  

   

  (n)       “Company Group” means, collectively, the Company and its Subsidiaries, and any other Affiliate of the Company designated as a member of the Company Group by the Committee.

   

  (o)       “Continuing Entity” has the meaning given to such term in Section 11(b) of the Plan.

   

  (p)       “Date of Grant” means the date on which the granting of an Award is authorized, or such other date as may be specified in such authorization.

   

  (q)       “Designated Foreign Subsidiaries” means all members of the Company Group that are organized under the laws of any jurisdiction other than the United States of America that may
      be designated by the Board or the Committee from time to time.

   

  (r)       “Detrimental Activity” means any of the following: (i) unauthorized disclosure of any confidential or proprietary information of any member of the Company Group; (ii) any
      activity that would be grounds to terminate the Participant’s employment or service with the Service Recipient for Cause; or (iii) a breach by the Participant of any noncompetition, nonsolicitation, or other agreement containing restrictive covenants
      with any member of the Company Group.

   

  (s)       “Director Award” has the meaning given to such term in Section 10 of the Plan.

   

  (t)       “Director Grant Value” has the meaning given to such term in Section 10 of the Plan.

   

  (u)       “Disability” means, as to any Participant, unless the applicable Award Agreement states otherwise, (i) “Disability,” as defined in any employment or consulting agreement
      between the Participant and the Service Recipient in effect at the time of such Termination; or (ii) in the absence of any such employment or consulting agreement (or the absence of any definition of “Disability” contained therein), a condition
      entitling the Participant to receive benefits under a long-term disability plan of the Service Recipient or other member of the Company Group in which such Participant is eligible to participate, or, in the absence of such a plan, the complete and
      permanent inability of the Participant by reason of illness or accident to perform the duties of the occupation at which the Participant was employed or served when such disability commenced. Any determination of whether Disability exists in the
      absence of a long-term disability plan shall be made by the Company (or its designee) in its sole and absolute discretion.

   

  (v)       “Effective Date” means May 31, 2018.

   

  (w)       “Eligible Person” means any (i) individual employed by any member of the Company Group; provided, however, that no such employee covered by a collective bargaining
      agreement shall be an Eligible Person unless and to the extent that such eligibility is set forth in such collective bargaining agreement or in an agreement or instrument relating thereto; (ii) director or officer of any member of the Company Group;
      or (iii) consultant or advisor to any member of the Company Group who may be offered securities registrable pursuant to a registration statement on Form S-8 under the Securities Act, who, in the case of each of clauses (i) through (iii) above has
      entered into an Award Agreement or who has received written notification from the Committee or its designee that they have been selected to participate in the Plan.

   

  (x)       “Exchange Act” means the Securities Exchange Act of 1934, as amended, and any successor thereto. Reference in the Plan to any section of (or rule promulgated under) the
      Exchange Act shall be deemed to include any rules, regulations or other interpretative guidance under such section or rule, and any amendments or successor provisions to such section, rules, regulations or guidance.

   

  (y)       “Exercise Price” has the meaning given to such term in Section 7(b) of the Plan.

   

  
     

    
      
 

  

  

   

  (z)         “Fair Market Value” means, as of any date, the fair market value of a share of Common Stock, as reasonably determined by the Company and consistently applied for purposes of
      the Plan, which may include, without limitation, the closing sales price on the trading day immediately prior to or on such date, or a trailing average of previous closing prices prior to such date.

   

  (aa)      “GAAP” has the meaning given to such term in Section 7(d) of the Plan.

   

  (bb)      “Grant Date Fair Market Value” means, as of a Date of Grant, (i) if the Common Stock is listed on a national securities exchange, the closing sales price of the Common Stock
      reported on the primary exchange on which the Common Stock is listed and traded on such date, or, if there are no such sales on that date, then on the last preceding date on which such sales were reported; (ii) if the Common Stock is not listed on
      any national securities exchange but is quoted in an inter-dealer quotation system on a last sale basis, the average between the closing bid price and ask price reported on such date, or, if there is no such sale on that date, then on the last
      preceding date on which a sale was reported; or (iii) if the Common Stock is not listed on a national securities exchange or quoted in an inter-dealer quotation system on a last sale basis, the amount determined by the Committee in good faith to be
      the fair market value of the Common Stock.

   

  (cc)       “Immediate Family Members” has the meaning given to such term in Section 13(b) of the Plan.

   

  (dd)      “Incentive Stock Option” means an Option which is designated by the Committee as an incentive stock option as described in Section 422 of the Code and otherwise meets the
      requirements set forth in the Plan.

   

  (ee)       “Indemnifiable Person” has the meaning given to such term in Section 4(e) of the Plan.

   

  (ff)        “Initial Director Grant” has the meaning given to such term in Section 10 of the Plan.

   

  (gg)      “Minimum Vesting Condition” means, with respect to any Award, that vesting of (or lapsing of restrictions on) such Award does not occur prior to the first anniversary of the
      Date of Grant (or the date of commencement of employment or service, in the case of a grant made in connection with a Participant’s commencement of employment or service), other than (i) in connection with a Change in Control, as provided in Section
      11(b) hereof, or (ii) as a result of a Participant’s death or Disability; provided, however, that to the extent determined by the Committee at the time of grant or as provided in Section 10 with respect to Director Awards, an Award need not be
      subject to such condition so long as the number of shares underlying such Award, together with the number of shares underlying any other Award granted without being subject to such condition does not exceed 5% of the Plan Share Reserve (the “Minimum
        Vesting Condition Carve Out Amount”).

   

  (hh)      “Minimum Vesting Condition Carve Out Amount” has the meaning given to such term in Section 2(gg) of the Plan.

   

  (ii)         “Nonqualified Stock Option” means an Option which is not designated by the Committee as an Incentive Stock Option.

   

  (jj)         “Non-Employee Director” means a member of the Board who is not an employee of any member of the Company Group.

   

  (kk)       “Option” means an Award granted under Section 7 of the Plan.

   

  (ll)         “Option Period” has the meaning given to such term in Section 7(c) of the Plan.

   

  
     

    
      
 

  

  

   

  (mm)     “Other Equity-Based Award” means an Award that is not an Option, Restricted Stock or Restricted Stock Unit, that is granted under Section 9 of the Plan and is (i) payable by
      delivery of Common Stock, and/or (ii) measured by reference to the value of Common Stock.

   

  (nn)      “Participant” means an Eligible Person who has been selected by the Committee to participate in the Plan and to receive an Award pursuant to the Plan.

   

  (oo)      “Performance-Based Award” has the meaning given to such term in Section 11(b) of the Plan.

   

  (pp)      “Permitted Transferee” has the meaning given to such term in Section 13(b) of the Plan.

   

  (qq)      “Person” means any individual, entity or group (within the meaning of Section 13(d)(3) or 14(d)(2) of the Exchange Act).

   

  (rr)        “Plan” means this PRA Health Sciences, Inc. 2018 Stock Incentive Plan, as it may be amended and/or restated from time to time.

   

  (ss)       “Plan Share Reserve” has the meaning given to such term in Section 5(b) of the Plan.

   

  (tt)        “Prior Plan” means the 2014 PRA Health Sciences, Inc. Omnibus Incentive Plan.

   

  (uu)      “Qualifying Director” means a person who is with respect to actions intended to obtain an exemption from Section 16(b) of the Exchange Act pursuant to Rule 16b-3 under the Exchange Act, a
      “non-employee director” within the meaning of Rule 16b-3 under the Exchange Act.

   

  (vv)      “Qualifying Termination” means a Termination (i) by the Service Recipient other than for Cause, (ii) by the Participant as a result of (A) a material diminution in compensation, (B) a
      material reduction in duties or responsibilities, or (C) a relocation by the Service Recipient of the Participant’s principal place of employment or providing services by more than fifty (50) miles from the then-current location, or (iii) by reason
      of such Participant’s death or Disability, in each case on or within a twelve (12) months following a Change in Control, or such other period as specified by the Committee.

   

  (ww)     “Restricted Period” means the period of time determined by the Committee during which an Award is subject to restrictions, including vesting conditions.

   

  (xx)        “Restricted Stock” means Common Stock, subject to certain specified restrictions (which may include, without limitation, a requirement that the Participant remain continuously
      employed or provide continuous services for a specified period of time), granted under Section 8 of the Plan.

   

  (yy)      “Restricted Stock Unit” means an unfunded and unsecured promise to deliver shares of Common Stock, cash, other securities or other property, subject to certain restrictions
      (which may include, without limitation, a requirement that the Participant remain continuously employed or provide continuous services for a specified period of time), granted under Section 8 of the Plan.

   

  (zz)        “Securities Act” means the Securities Act of 1933, as amended, and any successor thereto. Reference in the Plan to any section of (or rule promulgated under) the Securities
      Act shall be deemed to include any rules, regulations or other interpretative guidance under such section or rule, and any amendments or successor provisions to such section, rules, regulations or guidance.

   

  
     

    
      
 

  

  
   

  (aaa)     “Service Recipient” means, with respect to an individual holding a given Award, the member of the Company Group by which the original recipient of such Award is, or following
      a Termination was most recently, principally employed or to which such original recipient provides, or following a Termination was most recently providing, services, as applicable.

   

  (bbb)    “SAR Base Price” means, as to any Stock Appreciation Right, the price per share of Common Stock designated as the base value above which appreciation in value is measured.

   

  (ccc)     “Stock Appreciation Right” or “SAR” means an Other-Equity Based Award designated in an applicable Award Agreement as a stock appreciation right.

   

  (ddd)    “Subsidiary” means, with respect to any specified Person:

   

  (i)       any corporation, association or other business entity of which more than 50% of the total voting power of shares of such entity’s voting securities (without regard to the occurrence
      of any contingency and after giving effect to any voting agreement or stockholders’ agreement that effectively transfers voting power) is at the time owned or controlled, directly or indirectly, by that Person or one or more of the other Subsidiaries
      of that Person (or a combination thereof); and

   

  (ii)       any partnership (or any comparable foreign entity) (A) the sole general partner (or functional equivalent thereof) or the managing general partner of which is such Person or
      Subsidiary of such Person or (B) the only general partners (or functional equivalents thereof) of which are that Person or one or more Subsidiaries of that Person (or any combination thereof).

   

  (eee)     “Substitute Award” has the meaning given to such term in Section 5(f) of the Plan.

   

  (fff)       “Sub-Plans” means any sub-plan to the Plan that has been adopted by the Board or the Committee for the purpose of permitting the offering of Awards to employees of certain
      Designated Foreign Subsidiaries or otherwise outside the United States of America, with each such sub-plan designed to comply with local laws applicable to offerings in such foreign jurisdictions. Although any Sub-Plan may be designated a separate
      and independent plan from the Plan in order to comply with applicable local laws, the Plan Share Reserve and the other limits specified in Section 5 shall apply in the aggregate to the Plan and any Sub-Plan adopted hereunder, and the Minimum Vesting
      Condition shall apply to any Awards granted under any such Sub-Plan, unless prevented by applicable local laws.

   

  (ggg)    “Termination” means the termination of a Participant’s employment or service, as applicable, with the Service Recipient for any reason (including death).

   

  		3	Effective Date; Duration. The Plan became effective as of the Effective Date. The expiration
            date of the Plan shall be the tenth (10th) anniversary of the Effective Date, subject to earlier termination by the Committee pursuant to Section 12(a); provided, however, that such expiration shall not affect Awards then outstanding,
            and the terms and conditions of the Plan shall continue to apply to such Awards, and provided further that on and after the Assumption Date no new Awards have been or shall be granted hereunder.


   

  		4	Administration.


   

  (a)       General. The Committee shall administer the Plan. To the extent required to comply with the provisions of Rule 16b-3 promulgated under the Exchange Act (if the Board is not
      acting as the Committee under the Plan) it is intended that each member of the Committee shall, at the time such member takes any action with respect to an Award under the Plan that is intended to qualify for the exemptions provided by Rule 16b-3
      promulgated under the Exchange Act be a Qualifying Director. However, the fact that a Committee member shall fail to qualify as a Qualifying Director shall not invalidate any Award granted by the Committee that is otherwise validly granted under the
      Plan.

   

  
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  (b)       Committee Authority. Subject to the provisions of the Plan and applicable law, the Committee shall have the sole and plenary authority, in addition to other express powers and
      authorizations conferred on the Committee by the Plan, to (i) designate Participants; (ii) determine the type or types of Awards to be granted to a Participant; (iii) determine the number of shares of Common Stock to be covered by, or with respect to
      which payments, rights, or other matters are to be calculated in connection with, Awards; (iv) determine the terms and conditions of any Award; (v) determine whether, to what extent, and under what circumstances Awards may be settled in, or exercised
      for, cash, shares of Common Stock, other securities, other Awards or other property, or canceled, forfeited, or suspended and the method or methods by which Awards may be settled, exercised, canceled, forfeited, or suspended; (vi) determine whether,
      to what extent, and under what circumstances the delivery of cash, shares of Common Stock, other securities, other Awards, or other property and other amounts payable with respect to an Award shall be deferred either automatically or at the election
      of the Participant or of the Committee; (vii) interpret, administer, reconcile any inconsistency in, correct any defect in and/or supply any omission in the Plan and any instrument or agreement relating to, or Award granted under, the Plan; (viii)
      establish, amend, suspend, or waive any rules and regulations and appoint such agents as the Committee shall deem appropriate for the proper administration of the Plan; (ix) adopt Sub-Plans; and (x) make any other determination and take any other
      action that the Committee deems necessary or desirable for the administration of the Plan. Notwithstanding anything herein to the contrary, except as provided in Section 11(b), or on account of a Participant’s death or Disability, the Committee may
      not accelerate vesting of any Award.

   

  (c)       Delegation. Except to the extent prohibited by applicable law or the applicable rules and regulations of any securities exchange or inter-dealer quotation system on which the
      securities of the Company are listed or traded, the Committee may allocate all or any portion of its responsibilities and powers to any one or more of its members and may delegate all or any part of its responsibilities and powers to any person or
      persons selected by it. Any such allocation or delegation may be revoked by the Committee at any time. Without limiting the generality of the foregoing, the Committee may delegate to one or more officers of any member of the Company Group, the
      authority to act on behalf of the Committee with respect to any matter, right, obligation, or election which is the responsibility of, or which is allocated to, the Committee herein, and which may be so delegated as a matter of law, except with
      respect to grants of Awards to persons (i) who are Non-Employee Directors, or (ii) who are subject to Section 16 of the Exchange Act.

   

  (d)       Finality of Decisions. Unless otherwise expressly provided in the Plan, all designations, determinations, interpretations, and other decisions under or with respect to the
      Plan, any Award or any Award Agreement shall be within the sole discretion of the Committee, may be made at any time and shall be final, conclusive and binding upon all Persons, including, without limitation, any member of the Company Group, any
      Participant, any holder or beneficiary of any Award, and any stockholder of the Company.

   

  (e)       Indemnification. No member of the Board, the Committee or any employee or agent of any member of the Company Group (each such Person, an “Indemnifiable Person”) shall
      be liable for any action taken or omitted to be taken or any determination made with respect to the Plan or any Award hereunder (unless constituting fraud or a willful criminal act or omission). Each Indemnifiable Person shall be indemnified and held
      harmless by the Company against and from any loss, cost, liability, or expense (including attorneys’ fees) that may be imposed upon or incurred by such Indemnifiable Person in connection with or resulting from any action, suit or proceeding to which
      such Indemnifiable Person may be a party or in which such Indemnifiable Person may be involved by reason of any action taken or omitted to be taken or determination made with respect to the Plan or any Award hereunder and against and from any and all
      amounts paid by such Indemnifiable Person with the Company’s approval, in settlement thereof, or paid by such Indemnifiable Person in satisfaction of any judgment in any such action, suit or proceeding against such Indemnifiable Person, and the
      Company shall advance to such Indemnifiable Person any such expenses promptly upon written request (which request shall include an undertaking by the Indemnifiable Person to repay the amount of such advance if it shall ultimately be determined, as
      provided below, that the Indemnifiable Person is not entitled to be indemnified); provided, that the Company shall have the right, at its own expense, to assume and defend any such action, suit or proceeding and once the Company gives notice
      of its intent to assume the defense, the Company shall have sole control over such defense with counsel of the Company’s choice. The foregoing right of indemnification shall not be available to an Indemnifiable Person to the extent that a final
      judgment or other final adjudication (in either case not subject to further appeal) binding upon such Indemnifiable Person determines that the acts, omissions or determinations of such Indemnifiable Person giving rise to the indemnification claim
      resulted from such Indemnifiable Person’s fraud or willful criminal act or omission or that such right of indemnification is otherwise prohibited by law or by the organizational documents of any member of the Company Group. The foregoing right of
      indemnification shall not be exclusive of or otherwise supersede any other rights of indemnification to which such Indemnifiable Persons may be entitled under the organizational documents of any member of the Company Group, as a matter of law, under
      an individual indemnification agreement or contract or otherwise, or any other power that the Company may have to indemnify such Indemnifiable Persons or hold such Indemnifiable Persons harmless.

   

  
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  (f)       Board Authority. Notwithstanding anything to the contrary contained in the Plan, the Board may, in its sole discretion, at any time and from time to time, grant Awards and
      administer the Plan with respect to such Awards. Any such actions by the Board shall be subject to the applicable rules of the securities exchange or inter-dealer quotation system on which the Common Stock is listed or quoted. In any such case, the
      Board shall have all the authority granted to the Committee under the Plan.

   

  		5	Grant of Awards; Shares Subject to the Plan; Limitations.


   

  (a)       Grants. The Committee may, from time to time, grant Awards to one or more Eligible Persons.

   

  (b)       Share Reserve. Subject to Section 11 of the Plan and section 5(g) below, a number shares of Common Stock shall initially be available for Awards under the Plan equal to the
      sum of (1) 2,000,000 plus (2) the number of shares that remain available for grant under the Prior Plan as of the Effective Date (the “Plan Share Reserve”), and from and after the Effective Date, no further grants shall be made under
      the Prior Plan. Further, the number of shares of Common Stock underlying any award granted under the Prior Plan that expires, terminates or is canceled or forfeited for any reason whatsoever under the terms of the Prior Plan, shall increase the Plan
      Share Reserve. Each Award granted under the Plan will reduce the Plan Share Reserve by the number of shares of Common Stock underlying the Award.

   

  (c)       Additional Limits. Subject to Section 11 of the Plan and Section 5(g) below, no more than the number of shares of Common Stock equal to the Plan Share Reserve may be issued in
      the aggregate pursuant to the exercise of Incentive Stock Options granted under the Plan. The maximum number of shares of Common Stock subject to Awards granted during a single fiscal year to any Non-Employee Director, taken together with any cash
      fees paid to such Non-Employee Director during the fiscal year, shall not exceed $500,000 in total value (calculating the value of any such Awards based on the grant date fair value of such Awards for financial reporting purposes).

   

  (d)       Share Counting. Other than with respect to Substitute Awards, to the extent that an Award expires or is canceled, forfeited, or terminated without issuance to the Participant
      of the full number of shares of Common Stock to which the Award related, the unissued shares will returned for future grant under the Plan. Shares of Common Stock shall be deemed to have been issued in settlement of Awards if the Fair Market Value
      equivalent of such shares is paid in cash; provided, however, that no shares shall be deemed to have been issued in settlement of a SAR, Other Equity-Based Award or Restricted Stock Unit that only provides for settlement in cash and
      settles only in cash. Shares withheld in payment of the Exercise Price or taxes relating to an Award and shares equal to the number of shares surrendered in payment of any Exercise Price or taxes relating to an Award shall constitute shares issued to
      the Participant and shall reduce the Plan Share Reserve.

   

  (e)       Source of Shares. Shares of Common Stock issued by the Company in settlement of Awards may be authorized and unissued shares, shares held in the treasury of the Company,
      shares purchased on the open market or by private purchase or a combination of the foregoing.

   

  
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  (f)       Substitute Awards. Awards may, in the sole discretion of the Committee, be granted under the Plan in assumption of, or in substitution for, outstanding awards previously
      granted by an entity directly or indirectly acquired by the Company or with which the Company combines (“Substitute Awards”). Substitute Awards shall not be counted against the Plan Share Reserve; provided, that Substitute Awards
      issued in connection with the assumption of, or in substitution for, outstanding options intended to qualify as “incentive stock options” within the meaning of Section 422 of the Code shall be counted against the aggregate number of shares of Common
      Stock available for Awards of Incentive Stock Options under the Plan. Subject to applicable stock exchange requirements, available shares under a stockholder-approved plan of an entity directly or indirectly acquired by the Company or with which the
      Company combines (as appropriately adjusted to reflect the acquisition or combination transaction) may be used for Awards under the Plan and shall not reduce the number of shares of Common Stock available for issuance under the Plan.

   

  (g)       Limits and Assumption Date. In all
      cases with respect to each of the foregoing limits in Sections 5(b) and 5(c) above the specified limits or values will be reduced by the amount of any PRA Health Sciences Inc. common stock that was issued in settlement of the respective outstanding
      awards under the Plan prior to the Assumption Date.

   

  		6	Eligibility. Participation in the Plan shall be limited to Eligible Persons.


   

  		7	Options.


   

  (a)       General. Each Option granted under the Plan shall be evidenced by an Award Agreement, which agreement need not be the same for each Participant. Each Option so granted shall
      be subject to the conditions set forth in this Section 7, and to such other conditions not inconsistent with the Plan as may be reflected in the applicable Award Agreement. All Options granted under the Plan shall be Nonqualified Stock Options unless
      the applicable Award Agreement expressly states that the Option is intended to be an Incentive Stock Option. Incentive Stock Options shall be granted only to Eligible Persons who are employees of a member of the Company Group, and no Incentive Stock
      Option shall be granted to any Eligible Person who is ineligible to receive an Incentive Stock Option under the Code. No Option shall be treated as an Incentive Stock Option unless the Plan has been approved by the stockholders of the Company in a
      manner intended to comply with the stockholder approval requirements of Section 422(b)(1) of the Code, provided that any Option intended to be an Incentive Stock Option shall not fail to be effective solely on account of a failure to obtain
      such approval, but rather such Option shall be treated as a Nonqualified Stock Option unless and until such approval is obtained. In the case of an Incentive Stock Option, the terms and conditions of such grant shall be subject to, and comply with,
      such rules as may be prescribed by Section 422 of the Code. If for any reason an Option intended to be an Incentive Stock Option (or any portion thereof) shall not qualify as an Incentive Stock Option, then, to the extent of such nonqualification,
      such Option or portion thereof shall be regarded as a Nonqualified Stock Option appropriately granted under the Plan.

   

  (b)       Exercise Price. Except as otherwise provided by the Committee in the case of Substitute Awards, the exercise price (“Exercise Price”) per share of Common Stock for each
      Option shall not be less than 100% of the Grant Date Fair Market Value of such share; provided, however, that in the case of an Incentive Stock Option granted to an employee who, at the time of the grant of such Option, owns stock
      representing more than 10% of the voting power of all classes of stock of any member of the Company Group, the Exercise Price per share shall not be less than 110% of the Grant Date Fair Market Value per share.

   

  (c)       Vesting and Expiration.

   

  (i)       Subject to the Minimum Vesting Condition, Options shall vest and become exercisable in such manner and on such date or dates or upon such event or events as determined by the
      Committee.

   

  
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  (ii)       Options shall expire upon a date determined by the Committee, not to exceed ten (10) years from the Date of Grant (the “Option Period”); provided, that if the Option
      Period (other than in the case of an Incentive Stock Option) would expire at a time when trading in the shares of Common Stock is prohibited by the Company’s securities trading policy (or Company-imposed “blackout period”), then the Option Period
      shall be automatically extended until the thirtieth (30th) day following the expiration of such prohibition. Notwithstanding the foregoing, in no event shall the Option Period exceed five (5) years from the Date of Grant in the case of an Incentive
      Stock Option granted to a Participant who on the Date of Grant owns stock representing more than 10% of the voting power of all classes of stock of any member of the Company Group.

   

  (iii)       Unless otherwise provided by the Committee, whether in an Award Agreement or otherwise, in the event of: (A) a Participant’s Termination by the Service Recipient for Cause, all
      outstanding Options granted to such Participant shall immediately terminate and expire; (B) a Participant’s Termination due to death or Disability, each outstanding unvested Option granted to such Participant shall immediately terminate and expire,
      and each outstanding vested Option shall remain exercisable for one year thereafter (but in no event beyond the expiration of the Option Period); and (C) a Participant’s Termination for any other reason, each outstanding unvested Option granted to
      such Participant shall immediately terminate and expire, and each outstanding vested Option shall remain exercisable for ninety (90) days thereafter (but in no event beyond the expiration of the Option Period).

   

  (d)       Method of Exercise and Form of Payment. No shares of Common Stock shall be issued pursuant to any exercise of an Option until payment in full of the Exercise Price therefor is
      received by the Company and the Participant has paid to the Company an amount equal to any Federal, state, local and non-U.S. income, employment and any other applicable taxes required to be withheld. Options which have become exercisable may be
      exercised by delivery of written or electronic notice of exercise to the Company (or telephonic instructions to the extent provided by the Committee) in accordance with the terms of the Option accompanied by payment of the Exercise Price. Subject to
      applicable law, the Exercise Price shall be payable: (i) in cash, check, cash equivalent and/or shares of Common Stock valued at the Fair Market Value at the time the Option is exercised (including, pursuant to procedures approved by the Committee,
      by means of attestation of ownership of a sufficient number of shares of Common Stock in lieu of actual issuance of such shares to the Company); provided, that such shares of Common Stock are not subject to any pledge or other security
      interest and have been held by the Participant for at least six (6) months (or such other period as established from time to time by the Committee in order to avoid adverse accounting treatment applying generally accepted accounting principles (“GAAP”));

      or (ii) by such other method as the Committee may permit, in its sole discretion, including, without limitation (A) in other property having a fair market value on the date of exercise equal to the Exercise Price; (B) by means of a broker-assisted
      “cashless exercise” pursuant to which the Company is delivered (including telephonically to the extent permitted by the Committee) a copy of irrevocable instructions to a stockbroker to sell the shares of Common Stock otherwise issuable upon the
      exercise of the Option and to deliver promptly to the Company an amount equal to the Exercise Price; or (C) a “net exercise” procedure effected by withholding the minimum number of shares of Common Stock otherwise issuable in respect of an Option
      that are needed to pay the Exercise Price. Any fractional shares of Common Stock shall be settled in cash.

   

  (e)       Notification upon Disqualifying Disposition of an Incentive Stock Option. Each Participant awarded an Incentive Stock Option under the Plan shall notify the Company in writing
      immediately after the date the Participant makes a disqualifying disposition of any Common Stock acquired pursuant to the exercise of such Incentive Stock Option. A disqualifying disposition is any disposition (including, without limitation, any
      sale) of such Common Stock before the later of (i) the date that is two (2) years after the Date of Grant of the Incentive Stock Option, or (ii) the date that is one (1) year after the date of exercise of the Incentive Stock Option. The Company may,
      if determined by the Committee and in accordance with procedures established by the Committee, retain possession, as agent for the applicable Participant, of any Common Stock acquired pursuant to the exercise of an Incentive Stock Option until the
      end of the period described in the preceding sentence, subject to complying with any instructions from such Participant as to the sale of such Common Stock.

   

  
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  (f)       Compliance With Laws, etc. Notwithstanding the foregoing, in no event shall a Participant be permitted to exercise an Option in a manner which the Committee determines would
      violate the Sarbanes-Oxley Act of 2002, as it may be amended from time to time, or any other applicable law or the applicable rules and regulations of the Securities and Exchange Commission or the applicable rules and regulations of any securities
      exchange or inter-dealer quotation system on which the securities of the Company are listed or traded.

   

  		8	Restricted Stock and Restricted Stock Units.


   

  (a)       General. Each grant of Restricted Stock and Restricted Stock Units shall be evidenced by an Award Agreement. Each Restricted Stock and Restricted Stock Unit so granted shall
      be subject to the conditions set forth in this Section 8, and to such other conditions not inconsistent with the Plan as may be reflected in the applicable Award Agreement.

   

  (b)       Stock Certificates and Book-Entry; Escrow or Similar Arrangement. Upon the grant of Restricted Stock, the Committee shall cause a stock certificate registered in the name of
      the Participant to be issued or shall cause share(s) of Common Stock to be registered in the name of the Participant and held in book-entry form subject to the Company’s directions and, if the Committee determines that the Restricted Stock shall be
      held by the Company or in escrow rather than issued to the Participant pending the release of the applicable restrictions, the Committee may require the Participant to additionally execute and deliver to the Company (i) an escrow agreement
      satisfactory to the Committee, if applicable; and (ii) the appropriate stock power (endorsed in blank) with respect to the Restricted Stock covered by such agreement. Subject to the restrictions set forth in this Section 8, Section 13(c) of the Plan
      and the applicable Award Agreement, a Participant generally shall have the rights and privileges of a stockholder as to shares of Restricted Stock, including, without limitation, the right to vote such Restricted Stock. To the extent shares of
      Restricted Stock are forfeited, any stock certificates issued to the Participant evidencing such shares shall be returned to the Company, and all rights of the Participant to such shares and as a stockholder with respect thereto shall terminate
      without further obligation on the part of the Company. A Participant shall have no rights or privileges as a stockholder as to Restricted Stock Units.

   

  (c)       Vesting. Subject to the Minimum Vesting Condition, Restricted Stock and Restricted Stock Units shall vest, and any applicable Restricted Period shall lapse, in such manner and
      on such date or dates or upon such event or events as determined by the Committee.

   

  (d)       Issuance of Restricted Stock and Settlement of Restricted Stock Units.

   

  (i)       Upon the expiration of the Restricted Period with respect to any shares of Restricted Stock, the restrictions set forth in the applicable Award Agreement shall be of no further force
      or effect with respect to such shares, except as set forth in the applicable Award Agreement. If an escrow arrangement is used, upon such expiration, the Company shall issue to the Participant, or the Participant’s beneficiary, without charge, the
      stock certificate (or, if applicable, a notice evidencing a book-entry notation) evidencing the shares of Restricted Stock which have not then been forfeited and with respect to which the Restricted Period has expired (rounded down to the nearest
      full share).

   

  (ii)       Unless otherwise provided by the Committee in an Award Agreement or otherwise, upon the expiration of the Restricted Period with respect to any outstanding Restricted Stock Units,
      the Company shall issue to the Participant or the Participant’s beneficiary, without charge, one (1) share of Common Stock (or other securities or other property, as applicable) for each such outstanding Restricted Stock Unit; provided, however,
      that the Committee may, in its sole discretion, elect to (A) pay cash or part cash and part shares of Common Stock in lieu of issuing only shares of Common Stock in respect of such Restricted Stock Units; or (B) defer the issuance of shares of Common
      Stock (or cash or part cash and part shares of Common Stock, as the case may be) beyond the expiration of the Restricted Period if such extension would not cause adverse tax consequences under Section 409A of the Code. If a cash payment is made in
      lieu of issuing shares of Common Stock in respect of such Restricted Stock Units, the amount of such payment shall be equal to the Fair Market Value per share of the Common Stock as of the date on which the Restricted Period lapsed with respect to
      such Restricted Stock Units.

   

  
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  (e)       Legends on Restricted Stock. Each certificate, if any, or book entry representing Restricted Stock awarded under the Plan, if any, shall bear a legend or book entry notation
      substantially in the form of the following, in addition to any other information the Company deems appropriate, until the lapse of all restrictions with respect to such shares of Common Stock:

   

  TRANSFER OF THIS CERTIFICATE AND THE SHARES OF COMMON STOCK REPRESENTED
      HEREBY IS RESTRICTED PURSUANT TO THE TERMS OF THE PRA HEALTH SCIENCES, INC. 2018 SHARE INCENTIVE PLAN AND A RESTRICTED STOCK AWARD AGREEMENT BETWEEN PRA HEALTH SCIENCES, INC. AND PARTICIPANT. A COPY OF SUCH PLAN AND AWARD AGREEMENT IS ON FILE AT THE
      PRINCIPAL EXECUTIVE OFFICES OF PRA HEALTH SCIENCES, INC.

   

  		9	Other Equity-Based Awards. The Committee may grant Other Equity-Based Awards under the Plan,
            denominated in shares of Common Stock or based upon the value or otherwise related to the of shares of Common Stock, to Eligible Persons, alone or in tandem with other Awards, in such amounts and, subject to the Minimum Vesting Condition,
            dependent on such other conditions as the Committee shall from time to time in its sole discretion determine. Each Other Equity-Based Award granted under the Plan shall be evidenced by an Award Agreement and shall be subject to such conditions
            not inconsistent with the Plan as may be reflected in the applicable Award Agreement.


   

  		10	Non-Employee Director Grants.


   

  (a)       The Committee may, subject to Section 5(c) hereof, grant Awards to Non- Employee Directors (a “Director Award”), subject to the terms of this Section 10.

   

  (b)       The form of any Director Award, as well as the vesting and other applicable conditions of a Director Award, shall be determined by the Board prior to the applicable Date of Grant.
      Notwithstanding anything contained in the Plan to the contrary, in the event that a Non- Employee Director undergoes a Terminationon the date of a regularly scheduled annual meeting of the stockholders of the Company that is prior to the first
      anniversary of the Date of Grant of any Director Award as a result of such Non-Employee Director not being reelected for another term as a Non-Employee Director, the Director Award (or portion thereof) otherwise scheduled to vest on such first
      anniversary of the Date of Grant shall immediately vest upon such Termination, and such Director Award (or portion thereof) that vests as a result of this sentence shall count against the Minimum Vesting Condition Carve Out Amount (and to the extent
      that the number of shares of Common Stock subject to any such vesting would exceed the remaining Minimum Vesting Condition Carve Out Amount, vesting shall not occur with respect to any any such shares in excess of such Minimum Vesting Condition Carve
      Out Amount and shall be forfeited).

   

  		11	Changes in Capital Structure and Similar Events. Notwithstanding any other provision in this
            Plan to the contrary, the following provisions shall apply to all Awards granted hereunder


   

  (a)       General. In the event of (i) any dividend (other than regular cash dividends) or other distribution (whether in the form of cash, shares of Common Stock, other securities or
      other property), recapitalization, stock split, reverse stock split, reorganization, merger, consolidation, split-up, split-off, spin-off, combination, repurchase or exchange of shares of Common Stock or other securities of the Company, issuance of
      warrants or other rights to acquire shares of Common Stock or other securities of the Company, or other similar corporate transaction or event that affects the shares of Common Stock (including a Change in Control); or (ii) unusual or nonrecurring
      events affecting the Company, including changes in applicable rules, rulings, regulations or other requirements, that the Committee determines, in its sole discretion, could result in substantial dilution or enlargement of the rights intended to be
      granted to, or available for, Participants (any event in (i) or (ii), an “Adjustment Event”), the Committee shall, in respect of any such Adjustment Event, make such proportionate substitution or adjustment, if any, as it deems equitable, to
      any or all of (A) the Plan Share Reserve, or any other limit applicable under the Plan with respect to the number of Awards which may be granted hereunder; (B) the number of shares of Common Stock or other securities of the Company (or number and
      kind of other securities or other property) which may be issued in respect of Awards or with respect to which Awards may be granted under the Plan or any Sub- Plan; and (C) the terms of any outstanding Award, including, without limitation, (I) the
      number of shares of Common Stock or other securities of the Company (or number and kind of other securities or other property) subject to outstanding Awards or to which outstanding Awards relate; (II) the Exercise Price or SAR Base Price with respect
      to any Option or SAR, as applicable or any amount payable as a condition of issuance of shares of Common Stock (in the case of any other Award) (provided that in no event shall the per share price of an award be reduced to an amount that is lower
      than the nominal value of a Share); or (III) any applicable performance measures; provided, that in the case of any “equity restructuring” (within the meaning of the Financial Accounting Standards Board Accounting Standards Codification Topic
      718 (or any successor pronouncement thereto)), the Committee shall make an equitable or proportionate adjustment to outstanding Awards to reflect such equity restructuring.

   

  
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  (b)       Change in Control. In the event of a Change in Control, without limiting the foregoing and unless otherwise determined by the Committee (which determination may not include
      any accelerated vesting, except as provided in this Section 11(b)), in its sole discretion, the following provisions shall apply.

   

  (i)       Outstanding Awards with Time-Based Vesting. All outstanding Awards subject to vesting based on the Participant’s continued service over a period of time (“Time-Based Awards”)
      shall be assumed by the surviving or acquiring entity, or its Affiliates (the “Continuing Entity”), or substituted for new cash or equity-based awards of such Continuing Entity, as provided in the merger or acquisition agreement, or if no such
      assumption or substitution is provided for, all outstanding Time-Based Awards shall become fully vested and, to the extent applicable, exercisable and all forfeiture restrictions on such Awards shall lapse. To the extent that any Time-Based Awards
      are to be assumed or substituted, the Committee may provide that the vesting of any unvested portion of any one or more of such Awards will automatically accelerate upon a Participant’s Qualifying Termination.

   

  (ii)       Outstanding Awards with Performance-Based Vesting. All outstanding unvested Awards subject to vesting based on the achievement of performance criteria (“Performance-Based
        Awards”) shall vest as of the effective date of the Change in Control (A) at the target level, pro-rated to reflect the portion of the performance period that has elapsed as of the effective date of the Change in Control or (B) at the actual
      achievement level, based on the actual achievement of such performance criteria, as of the effective date of the Change in Control or the most recent practicable date immediately prior to the effective date of the Change in Control on which the
      performance criteria may be measured prior to such effective date, as reasonably determined by the Committee in good faith, including any reasonable assumptions, adjustments or projections related to such performance criteria. The level of vesting
      for each outstanding Performance-Based Award on a Change in Control as between clause (A) or (B) above shall be the level that provides the greatest value under each Performance-Based Award, which may be different with respect to each outstanding
      Performance-Based Award. Any unvested portion of any outstanding Performance- Based Award that does not become vested in connection with a Change in Control in accordance with this Section 11(b)(ii) shall terminate and cease to be outstanding as of
      the effective date of the Change in Control, without payment of any consideration to the Participant.

   

  (iii)       Cancellation of Awards. In connection with a Change in Control, the Committee may, in its sole discretion, but shall not be obligated to, provide for cancellation of all or
      any portion of any one or more outstanding Awards and payment to the holders of such Awards, with respect to the portion of such Awards that are vested as of such cancellation (including, without limitation, any Awards that would vest in accordance
      with the terms of such Award or in accordance with this Section 11(b)(i) or (ii) hereof, as applicable), the value of the vested portion of such Awards, if any, as determined by the Committee (which value, if applicable, may be based upon the per-
      share consideration received or to be received by the holders of the shares of Common Stock upon the occurrence of the Change in Control (the “Change in Control Consideration”), including, without limitation, in the case of an outstanding
      Option or SAR, a cash payment in an amount equal to the excess, if any, of the Change in Control Consideration over the per-share Exercise Price or SAR Base Price, as applicable, of such Option or SAR, multiplied by the number of shares of Common
      Stock underlying the vested portion of each such Option or SAR. Payments to holders with respect to the vested portion of such cancelled Awards pursuant to this Section 11(b)(iii) shall be made in cash or, in the sole discretion of the Committee, in
      such other form of consideration necessary for such holders to receive the property, cash, securities, and/or other consideration (or any combination thereof) as such holders would have been entitled to receive upon the occurrence of the Change in
      Control as if such holders had been, immediately prior to such Change in Control, the holder of the number of shares of Common Stock covered by the vested portion of such cancelled Awards (less any applicable Exercise or SAR Base Price). The unvested
      portion of any outstanding Award, and the vested portion of any Option or SAR having an Exercise or Strike Price equal to, or in excess of, the Change in Control Consideration, may be canceled and terminated without any payment or consideration
      therefor.

   

  
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  For purposes of Section 11(b)(i) above, the assumption or substitution of
      an Award may include conversion of the shares of Common Stock underlying such Award into shares of the Continuing Entity, or, subject to any limitations or reductions as may be necessary to comply with Section 409A of the Code, into cash, property or
      other securities having an equivalent value as the Award, which conversion shall not affect any continued vesting requirements of the Award (other than as provided in clause (i) above upon a Participant’s Qualifying Termination). For the avoidance of
      doubt, any such substitution of an Award shall not provide for the acceleration of any vesting requirements of the Award (other than as provided in clause (i) above upon a Participant’s Termination) and no Awards shall vest solely as a result of such
      assumption or substitution.

   

  (c)       Other Requirements. Prior to any payment or adjustment contemplated under this Section 11, the Committee may require a Participant to (i) represent and warrant as to the
      unencumbered title to the Participant’s Awards; (ii) bear such Participant’s pro rata share of any post-closing indemnity obligations, and be subject to the same post-closing purchase price adjustments, escrow terms, offset rights, holdback terms,
      and similar conditions as the other holders of Common Stock, subject to any limitations or reductions as may be necessary to comply with Section 409A of the Code; and (iii) deliver customary transfer documentation as reasonably determined by the
      Committee.

   

  (d)       Fractional Shares. Any adjustment provided under this Section 11 may provide for the elimination of any fractional share that might otherwise become subject to an Award.

   

  (e)       Binding Effect. Any adjustment, substitution, determination of value or other action taken by the Committee under this Section 11 shall be conclusive and binding for all
      purposes.

   

  		12	Amendments and Termination.


   

  (a)       Amendment and Termination of the Plan. The Board may amend, alter, suspend, discontinue, or terminate the Plan or any portion thereof at any time; provided, that no
      such amendment, alteration, suspension, discontinuance or termination shall be made without stockholder approval if (i) such approval is necessary to comply with any regulatory requirement applicable to the Plan (including, without limitation, as
      necessary to comply with any rules or regulations of any securities exchange or inter-dealer quotation system on which the securities of the Company may be listed or quoted) or for changes in GAAP to new accounting standards; (ii) it would materially
      increase the number of securities which may be issued under the Plan (except for increases pursuant to Section 5 or 11 of the Plan); or (iii) it would materially modify the requirements for participation in the Plan; provided, further, that
      any such amendment, alteration, suspension, discontinuance or termination that would materially and adversely affect the rights of any Participant or any holder or beneficiary of any Award theretofore granted shall not to that extent be effective
      without the consent of the affected Participant, holder or beneficiary. Notwithstanding the foregoing, no amendment shall be made to Section 12(c) of the Plan without stockholder approval.

   

  
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  (b)       Amendment of Award Agreements. The Committee may, to the extent consistent with the terms of the Plan and any applicable Award Agreement, waive any conditions or rights under,
      amend any terms of, or alter, suspend, discontinue, cancel or terminate, any Award theretofore granted or the associated Award Agreement, prospectively or retroactively (including after a Participant’s Termination); provided, that, other than
      pursuant to Section 11, any such waiver, amendment, alteration, suspension, discontinuance, cancellation or termination that would materially and adversely affect the rights of any Participant with respect to any Award theretofore granted shall not
      to that extent be effective without the consent of the affected Participant.

   

  (c)       No Repricing. Notwithstanding anything in the Plan to the contrary, without stockholder approval, except as otherwise permitted under Section 11 of the Plan, (i) no amendment
      or modification may reduce the Exercise Price of any Option or the SAR Base Price of any SAR; (ii) the Committee may not cancel any outstanding Option or SAR and replace it with a new Option or SAR (with a lower Exercise Price or SAR Base Price, as
      the case may be) or other Award or cash payment that is greater than the intrinsic value (if any) of the cancelled Option or SAR; and (iii) the Committee may not take any other action which is considered a “repricing” for purposes of the stockholder
      approval rules of any securities exchange or inter- dealer quotation system on which the securities of the Company are listed or quoted.

   

  		13	General.


   

  (a)       Award Agreements. Each Award under the Plan shall be evidenced by an Award Agreement, which shall be delivered to the Participant to whom such Award was granted and shall
      specify the terms and conditions of the Award and any rules applicable thereto, including, without limitation, the effect on such Award of the death, Disability or Termination of a Participant, or of such other events as may be determined by the
      Committee. For purposes of the Plan, an Award Agreement may be in any such form (written or electronic) as determined by the Committee (including, without limitation, a Board or Committee resolution, an employment agreement, a notice, a certificate
      or a letter) evidencing the Award. The Committee need not require an Award Agreement to be signed by the Participant or a duly authorized representative of the Company.

   

  (b)       Nontransferability.

   

  (i)       Each Award shall be exercisable only by such Participant to whom such Award was granted during the Participant’s lifetime, or, if permissible under applicable law, by the
      Participant’s legal guardian or representative. No Award may be assigned, alienated, pledged, attached, sold or otherwise transferred or encumbered by a Participant (unless such transfer is specifically required pursuant to a domestic relations order
      or by applicable law) other than by will or by the laws of descent and distribution and any such purported assignment, alienation, pledge, attachment, sale, transfer or encumbrance shall be void and unenforceable against any member of the Company
      Group; provided, that the designation of a beneficiary shall not constitute an assignment, alienation, pledge, attachment, sale, transfer or encumbrance.

   

  (ii)       Notwithstanding the foregoing, the Committee may, in its sole discretion, permit Awards (other than Incentive Stock Options) to be transferred by a Participant, without
      consideration, subject to such rules as the Committee may adopt consistent with any applicable Award Agreement to preserve the purposes of the Plan, to (A) any person who is a “family member” of the Participant, as such term is used in the
      instructions to Form S-8 under the Securities Act or any successor form of registration statement promulgated by the Securities and Exchange Commission (collectively, the “Immediate Family Members”); (B) a trust solely for the benefit of the
      Participant and the Participant’s Immediate Family Members; (C) a partnership or limited liability company whose only partners or stockholders are the Participant and the Participant’s Immediate Family Members; or (D) a beneficiary to whom donations
      are eligible to be treated as “charitable contributions” for federal income tax purposes (each transferee described in clauses (A), (B), (C) and (D) above is hereinafter referred to as a “Permitted Transferee”); provided, that the
      Participant gives the Committee advance written notice describing the terms and conditions of the proposed transfer and the Committee notifies the Participant in writing that such a transfer would comply with the requirements of the Plan.

   

  
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  (iii)       The terms of any Award transferred in accordance with clause (ii) above shall apply to the Permitted Transferee and any reference in the Plan, or in any applicable Award Agreement,
      to a Participant shall be deemed to refer to the Permitted Transferee, except that (A) Permitted Transferees shall not be entitled to transfer any Award, other than by will or the laws of descent and distribution; (B) Permitted Transferees shall not
      be entitled to exercise any transferred Option unless there shall be in effect a registration statement on an appropriate form covering the shares of Common Stock to be acquired pursuant to the exercise of such Option if the Committee determines,
      consistent with any applicable Award Agreement, that such a registration statement is necessary or appropriate; (C) neither the Committee nor the Company shall be required to provide any notice to a Permitted Transferee, whether or not such notice is
      or would otherwise have been required to be given to the Participant under the Plan or otherwise; and (D) the consequences of a Participant’s Termination under the terms of the Plan and the applicable Award Agreement shall continue to be applied with
      respect to the Participant, including, without limitation, that an Option shall be exercisable by the Permitted Transferee only to the extent, and for the periods, specified in the Plan and the applicable Award Agreement.

   

  (c)       Dividends and Dividend Equivalents.

   

  (i)       The Committee may, in its sole discretion, provide a Participant as part of an Award with dividends, dividend equivalents, or similar payments in respect of Awards, payable in cash,
      shares of Common Stock, other securities, other Awards or other property, on a current or deferred basis, on such terms and conditions as may be determined by the Committee in its sole discretion, including, without limitation, payment directly to
      the Participant, withholding of such amounts by the Company subject to vesting of the Award or reinvestment in additional shares of Common Stock.

   

  (ii)       Without limiting the foregoing, unless otherwise provided in the Award Agreement, any dividend otherwise payable in respect of any share of Restricted Stock that remains subject to
      vesting conditions at the time of payment of such dividend shall be retained by the Company and remain subject to the same vesting conditions as the share of Restricted Stock to which the dividend relates.

   

  (iii)       To the extent provided in an Award Agreement, the holder of outstanding Restricted Stock Units shall be entitled to be credited with dividend equivalent payments (upon the payment by
      the Company of dividends on shares of Common Stock) either in cash or, in the sole discretion of the Committee, in shares of Common Stock having a Fair Market Value equal to the amount of such dividends (and interest may, in the sole discretion of
      the Committee, be credited on the amount of cash dividend equivalents at a rate and subject to such terms as determined by the Committee), which accumulated dividend equivalents (and interest thereon, if applicable) shall be payable at the same time
      as the underlying Restricted Stock Units are settled following the date on which the Restricted Period lapses with respect to such Restricted Stock Units, and, if such Restricted Stock Units are forfeited, the Participant shall have no right to such
      dividend equivalent payments (or interest thereon, if applicable).

   

  (d)       Tax Withholding.

   

  (i)       A Participant shall be required to pay to the Company or one or more of its Subsidiaries, as applicable, an amount in cash (by check or wire transfer) equal to the aggregate amount
      of any income, employment and/or other applicable taxes that are statutorily required to be withheld in respect of an Award. Alternatively, the Company or any of its Subsidiaries may elect, in its sole discretion, to satisfy this requirement by
      withholding such amount from any cash compensation or other cash amounts owing to a Participant.

   

  (ii)       Without limiting the foregoing, the Committee may (but is not obligated to), in its sole discretion, permit or require a Participant to satisfy, all or any portion of the minimum
      income, employment and/or other applicable taxes that are statutorily required to be withheld with respect to an Award by (A) the delivery of shares of Common Stock (which are not subject to any pledge or other security interest) that have been both
      held by the Participant and vested for at least six (6) months (or such other period as established from time to time by the Committee in order to avoid adverse accounting treatment under applicable accounting standards) having an aggregate Fair
      Market Value equal to such minimum statutorily required withholding liability (or portion thereof); or (B) having the Company withhold from the shares of Common Stock otherwise issuable or deliverable to, or that would otherwise be retained by, the
      Participant upon the grant, exercise, vesting or settlement of the Award, as applicable, a number of shares of Common Stock with an aggregate Fair Market Value equal to an amount, subject to clause (iii) below, not in excess of such minimum
      statutorily required withholding liability (or portion thereof).

   

  
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  (iii)       The Committee, subject to its having considered the applicable accounting impact of any such determination, has full discretion to allow Participants to satisfy, in whole or in part,
      any additional income, employment and/or other applicable taxes payable by them with respect to an Award by electing to have the Company withhold from the shares of Common Stock otherwise issuable or deliverable to, or that would otherwise be
      retained by, a Participant upon the grant, exercise, vesting or settlement of the Award, as applicable, shares of Common Stock having an aggregate Fair Market Value that is greater than the applicable minimum required statutory withholding liability
      (but such withholding may in no event be in excess of the maximum statutory withholding amount(s) in a Participant’s relevant tax jurisdictions).

   

  (e)       Data Protection. By participating in the Plan or accepting any rights granted under it, each Participant consents to the collection and processing of personal data relating to
      the Participant so that the Company and its Affiliates can fulfill their obligations and exercise their rights under the Plan and generally administer and manage the Plan. This data will include, but may not be limited to, data about participation in
      the Plan and shares offered or received, purchased, or sold under the Plan from time to time and other appropriate financial and other data (such as the date on which the Awards were granted) about the Participant and the Participant’s participation
      in the Plan.

   

  (f)       No Claim to Awards; No Rights to Continued Employment; Waiver. No employee of any member of the Company Group, or other Person, shall have any claim or right to be granted an
      Award under the Plan or, having been selected for the grant of an Award, to be selected for a grant of any other Award. There is no obligation for uniformity of treatment of Participants or holders or beneficiaries of Awards. The terms and conditions
      of Awards and the Committee’s determinations and interpretations with respect thereto need not be the same with respect to each Participant and may be made selectively among Participants, whether or not such Participants are similarly situated.
      Neither the Plan nor any action taken hereunder shall be construed as giving any Participant any right to be retained in the employ or service of the Service Recipient or any other member of the Company Group, nor shall it be construed as giving any
      Participant any rights to continued service on the Board. The Service Recipient or any other member of the Company Group may at any time dismiss a Participant from employment or discontinue any consulting relationship, free from any liability or any
      claim under the Plan, unless otherwise expressly provided in the Plan or any Award Agreement. By accepting an Award under the Plan, a Participant shall thereby be deemed to have waived any claim to continued exercise or vesting of an Award or to
      damages or severance entitlement related to non-continuation of the Award beyond the period provided under the Plan or any Award Agreement, except to the extent of any provision to the contrary in any written employment contract or other agreement
      between the Service Recipient and/or any member of the Company Group and the Participant, whether any such agreement is executed before, on or after the Date of Grant.

   

  (g)       International Participants. With respect to Participants who reside or work outside of the United States of America, the Committee may, in its sole discretion, amend the terms
      of the Plan and create or amend Sub-Plans or amend outstanding Awards with respect to such Participants in order to conform such terms with the requirements of local law or to obtain more favorable tax or other treatment for a Participant or any
      member of the Company Group.

   

  (h)       Designation and Change of Beneficiary. Each Participant may file with the Committee a written designation of one or more Persons as the beneficiary(ies) who shall be entitled
      to receive the amounts payable with respect to an Award, if any, due under the Plan upon the Participant’s death. A Participant may, from time to time, revoke or change the Participant’s beneficiary designation without the consent of any prior
      beneficiary by filing a new designation with the Committee. The last such designation received by the Committee shall be controlling; provided, however, that no designation, or change or revocation thereof, shall be effective unless received
      by the Committee prior to the Participant’s death, and in no event shall it be effective as of a date prior to such receipt. If no beneficiary designation is filed by a Participant, the beneficiary shall be deemed to be the Participant’s spouse or,
      if the Participant is unmarried at the time of death, the Participant’s estate.

   

  
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  (i)       Termination. Except as otherwise provided in an Award Agreement, unless determined otherwise by the Committee at any point following such event: (i) neither a temporary
      absence from employment or service due to illness, vacation or leave of absence (including, without limitation, a call to active duty for military service through a Reserve or National Guard unit) nor a transfer from employment or service with one
      member of the Company Group to employment or service with another member of the Company Group (or vice-versa) shall be considered a Termination; and (ii) if a Participant undergoes a Termination of employment, but such Participant continues to
      provide services to the Company Group in a non-employee capacity, such change in status shall not be considered a Termination for purposes of the Plan. Further, unless otherwise determined by the Committee, in the event that any Service Recipient
      ceases to be a member of the Company Group (by reason of sale, divestiture, spin-off or other similar transaction), unless a Participant’s employment or service is transferred to another entity that would constitute a member of the Company Group
      immediately following such transaction, such Participant shall be deemed to have suffered a Termination hereunder as of the date of the consummation of such transaction.

   

  (j)       No Rights as a Stockholder. Except as otherwise specifically provided in the Plan or any Award Agreement, no Person shall be entitled to the privileges of ownership in respect
      of shares of Common Stock which are subject to Awards hereunder until such shares have been issued or delivered to such Person.

   

  (k)       Government and Other Regulations.

   

  (i)       The obligation of the Company to settle Awards in shares of Common Stock or other consideration shall be subject to all applicable laws, rules, and regulations, and to such approvals
      by governmental agencies as may be required. Notwithstanding any terms or conditions of any Award to the contrary, the Company shall be under no obligation to offer to sell or to sell, and shall be prohibited from offering to sell or selling, any
      shares of Common Stock pursuant to an Award unless such shares have been properly registered for sale pursuant to the Securities Act with the Securities and Exchange Commission or unless the Company has received an opinion of counsel (if the Company
      has requested such an opinion), satisfactory to the Company, that such shares may be offered or sold without such registration pursuant to an available exemption therefrom and the terms and conditions of such exemption have been fully complied with.
      The Company shall be under no obligation to register for sale under the Securities Act any of the shares of Common Stock to be offered or sold under the Plan. The Committee shall have the authority to provide that all shares of Common Stock issued
      under the Plan shall be subject to such stop-transfer orders and other restrictions as the Committee may deem advisable under the Plan, the applicable Award Agreement, the Federal securities laws, or the rules, regulations and other requirements of
      the Securities and Exchange Commission, any securities exchange or inter-dealer quotation system on which the securities of the Company are listed or quoted and any other applicable Federal, state, local or non-U.S. laws, rules, regulations and other
      requirements, and, without limiting the generality of Section 8 of the Plan, the Committee may cause a legend or legends to be put on certificates representing shares of Common Stock issued under the Plan to make appropriate reference to such
      restrictions or may cause such Common Stock issued under the Plan in book-entry form to be held subject to the Company’s instructions or subject to appropriate stop-transfer orders. Notwithstanding any provision in the Plan to the contrary, the
      Committee reserves the right to add any additional terms or provisions to any Award granted under the Plan that the Committee, in its sole discretion, deems necessary or advisable in order that such Award complies with the legal requirements of any
      governmental entity to whose jurisdiction the Award is subject.

   

  
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  (ii) The Committee may cancel an Award or any portion thereof if it determines, in its sole discretion, that legal or contractual restrictions and/or blockage and/or other market considerations would make
      the Company’s acquisition of shares of Common Stock from the public markets, the Company’s issuance of Common Stock to the Participant, the Participant’s acquisition of Common Stock from the Company and/or the Participant’s sale of Common Stock to
      the public markets, illegal, impracticable or inadvisable. If the Committee determines to cancel all or any portion of an Award in accordance with the foregoing, the Company shall, subject to any limitations or reductions as may be necessary to
      comply with Section 409A of the Code, (A) in the case of Options or SARs, provide the Participant with a cash payment or grant of shares of Common Stock, subject to deferred vesting and delivery consistent with the vesting restrictions applicable to
      such Award, equal to the excess of (I) the aggregate Fair Market Value of the shares of Common Stock subject to such Award or portion thereof canceled (determined as of the applicable exercise date, or the date that the shares would have been vested
      or issued, as applicable); over (II) the aggregate Exercise Price or SAR Base Price (in the case of an Option or SAR, respectively) or any amount payable to the Company as a condition of issuance of shares of Common Stock (in the case of any other
      Award), or (B) in the case of Restricted Stock, Restricted Stock Units or Other Equity-Based Awards, provide the Participant with a cash payment or grant of shares of Common Stock, subject to deferred vesting and delivery consistent with the vesting
      restrictions applicable to such Award, equal to the value of such Award or the underlying shares in respect thereof.

   

  (l)       No Section 83(b) Elections Without Consent of Company. No election under Section 83(b) of the Code or under a similar provision of law may be made unless expressly permitted
      by the terms of the applicable Award Agreement or by action of the Committee in writing prior to the making of such election. If a Participant, in connection with the acquisition of shares of Common Stock under the Plan or otherwise, is expressly
      permitted to make such election and the Participant makes the election, the Participant shall notify the Company of such election within ten (10) days of filing notice of the election with the Internal Revenue Service or other governmental authority,
      in addition to any filing and notification required pursuant to Section 83(b) of the Code or other applicable provision.

   

  (m)       Payments to Persons Other Than Participants. If the Committee shall find that any Person to whom any amount is payable under the Plan is unable to care for the Participant’s
      affairs because of illness or accident, or is a minor, or has died, then any payment due to such Person or the Participant’s estate (unless a prior claim therefor has been made by a duly appointed legal representative) may, if the Committee so
      directs the Company, be paid to the Participant’s spouse, child, relative, an institution maintaining or having custody of such Person, or any other Person deemed by the Committee to be a proper recipient on behalf of such Person otherwise entitled
      to payment. Any such payment shall be a complete discharge of the liability of the Committee and the Company therefor.

   

  (n)       Nonexclusivity of the Plan. Neither the adoption of the Plan by the Board nor the submission of the Plan to the stockholders of the Company for approval shall be construed as
      creating any limitations on the power of the Board to adopt such other incentive arrangements as it may deem desirable, including, without limitation, the granting of equity-based awards otherwise than under the Plan, and such arrangements may be
      either applicable generally or only in specific cases.

   

  (o)       No Trust or Fund Created. Neither the Plan nor any Award shall create or be construed to create a trust or separate fund of any kind or a fiduciary relationship between any
      member of the Company Group, on the one hand, and a Participant or other Person, on the other hand. No provision of the Plan or any Award shall require the Company, for the purpose of satisfying any obligations under the Plan, to purchase assets or
      place any assets in a trust or other entity to which contributions are made or otherwise to segregate any assets, nor shall the Company be obligated to maintain separate bank accounts, books, records or other evidence of the existence of a segregated
      or separately maintained or administered fund for such purposes. Participants shall have no rights under the Plan other than as unsecured general creditors of the Company, except that insofar as they may have become entitled to payment of additional
      compensation by performance of services, they shall have the same rights as other service providers under general law.

   

  (p)       Reliance on Reports. Each member of the Committee and each member of the Board shall be fully justified in acting or failing to act, as the case may be, and shall not be
      liable for having so acted or failed to act in good faith, in reliance upon any report made by the independent public accountant of any member of the Company Group and/or any other information furnished in connection with the Plan by any agent of the
      Company or the Committee or the Board, other than himself or herself.

   

  
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  (q)       Relationship to Other Benefits. No payment under the Plan shall be taken into account in determining any benefits under any pension, retirement, profit sharing, group
      insurance or other benefit plan of the Company except as otherwise specifically provided in such other plan or as required by applicable law.

   

  (r)       Governing Law. The Plan shall be governed by and construed in accordance with the internal laws of the State of Delaware applicable to contracts made and performed wholly
      within the State of Delaware, without giving effect to the conflict of laws provisions thereof. EACH PARTICIPANT WHO ACCEPTS AN AWARD IRREVOCABLY WAIVES ALL RIGHT TO A TRIAL BY JURY IN ANY SUIT, ACTION, OR OTHER PROCEEDING INSTITUTED BY OR AGAINST
      SUCH PARTICIPANT IN RESPECT OF THE PARTICIPANT’S RIGHTS OR OBLIGATIONS HEREUNDER

   

  (s)       Severability. If any provision of the Plan or any Award or Award Agreement is or becomes or is deemed to be invalid, illegal, or unenforceable in any jurisdiction or as to any
      Person or Award, or would disqualify the Plan or any Award under any law deemed applicable by the Committee, such provision shall be construed or deemed amended to conform to the applicable laws, or if it cannot be construed or deemed amended
      without, in the determination of the Committee, materially altering the intent of the Plan or the Award, such provision shall be construed or deemed stricken as to such jurisdiction, Person or Award and the remainder of the Plan and any such Award
      shall remain in full force and effect.

   

  (t)       Obligations Binding on Successors. The obligations of the Company under the Plan shall be binding upon any successor corporation or organization resulting from the merger,
      consolidation or other reorganization of the Company, or upon any successor corporation or organization succeeding to substantially all of the assets and business of the Company.

   

  (u)       Section 409A of the Code.

   

  (i)       Notwithstanding any provision of the Plan to the contrary, it is intended that the provisions of the Plan comply with Section 409A of the Code, and all provisions of the Plan shall
      be construed and interpreted in a manner consistent with the requirements for avoiding taxes or penalties under Section 409A of the Code. Each Participant is solely responsible and liable for the satisfaction of all taxes and penalties that may be
      imposed on or in respect of such Participant in connection with the Plan (including any taxes and penalties under Section 409A of the Code), and neither the Service Recipient nor any other member of the Company Group shall have any obligation to
      indemnify or otherwise hold such Participant (or any beneficiary) harmless from any or all of such taxes or penalties. With respect to any Award that is considered “deferred compensation” subject to Section 409A of the Code, references in the Plan to
      “termination of employment” (and substantially similar phrases) shall mean “separation from service” within the meaning of Section 409A of the Code. For purposes of Section 409A of the Code, each of the payments that may be made in respect of any
      Award granted under the Plan is designated as separate a payment.

   

  (ii)       Notwithstanding anything in the Plan to the contrary, if a Participant is a “specified employee” within the meaning of Section 409A(a)(2)(B)(i) of the Code, no payments in respect of
      any Awards that are “deferred compensation” subject to Section 409A of the Code and which would otherwise be payable upon the Participant’s “separation from service” (as defined in Section 409A of the Code) shall be made to such Participant prior to
      the date that is six (6) months after the date of such Participant’s “separation from service” or, if earlier, the date of the Participant’s death. Following any applicable six (6) month delay, all such delayed payments will be paid in a single lump
      sum on the earliest date permitted under Section 409A of the Code that is also a business day.

   

  
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  (iii)       Unless otherwise provided by the Committee in an Award Agreement or otherwise, in the event that the timing of payments in respect of any Award (that would otherwise be considered
      “deferred compensation” subject to Section 409A of the Code) would be accelerated upon the occurrence of (A) a Change in Control, no such acceleration shall be permitted unless the event giving rise to the Change in Control satisfies the definition
      of a change in the ownership or effective control of a corporation, or a change in the ownership of a substantial portion of the assets of a corporation pursuant to Section 409A of the Code; or (B) a Disability, no such acceleration shall be
      permitted unless the Disability also satisfies the definition of “Disability” pursuant to Section 409A of the Code.

   

  (v)       Clawback/Repayment. All Awards shall be subject to reduction, cancellation, forfeiture or recoupment to the extent necessary to comply with (i) any clawback, forfeiture or
      other similar policy adopted by the Board or the Committee and as in effect from time to time; and (ii) applicable law. Further, to the extent that the Participant receives any amount in excess of the amount that the Participant should otherwise have
      received under the terms of the Award for any reason (including, without limitation, by reason of a financial restatement, mistake in calculations or other administrative error), the Participant shall be required to repay any such excess amount to
      the Company.

   

  (w)       Detrimental Activity. Notwithstanding anything to the contrary contained herein, if a Participant has engaged in any Detrimental Activity, as determined by the Committee, the
      Committee may, in its sole discretion, provide for one or more of the following:

   

  (i)       cancellation of any or all of such Participant’s outstanding Awards; and

   

  (ii)       forfeiture and prompt repayment to the Company by the Participant, of any gain realized on the vesting, exercise or settlement of any Awards previously granted to such Participant.

   

  (x)       Right of Offset. The Company will have the right to offset against its obligation to deliver shares of Common Stock (or other property or cash) under the Plan or any Award
      Agreement any outstanding amounts (including, without limitation, travel and entertainment or advance account balances, loans, repayment obligations under any Awards, or amounts repayable to the Company pursuant to tax equalization, housing,
      automobile or other employee programs) that the Participant then owes to any member of the Company Group and any amounts the Committee otherwise deems appropriate pursuant to any tax equalization policy or agreement. Notwithstanding the foregoing, if
      an Award is “deferred compensation” subject to Section 409A of the Code, the Committee will have no right to offset against its obligation to deliver shares of Common Stock (or other property or cash) under the Plan or any Award Agreement if such
      offset could subject the Participant to the additional tax imposed under Section 409A of the Code in respect of an outstanding Award.

   

  (y)       Expenses; Titles and Headings. The expenses of administering the Plan shall be borne by the Company Group. The titles and headings of the sections in the Plan are for
      convenience of reference only, and in the event of any conflict, the text of the Plan, rather than such titles or headings, shall control.

   

  (z)       Compliance. Notwithstanding any other
      provision of this Plan, (a) the Company shall not be obliged to issue any Shares pursuant to an Award unless at least the nominal value of each such newly issued Share has been fully paid in advance in accordance with applicable law (which
      requirement may mean the holder of an award is obliged to make such payment) and (b) the Company shall not be obliged to issue or deliver any Shares in satisfaction of Awards until all legal and regulatory requirements associated with such issue or
      delivery have been complied with to the satisfaction of the Committee.

   

    

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