Document:

sum_Ex10_4

		
			Exhibit 10.4
		

		
			 
		

		
			[Final]
		

		
			 
		

		
			PERFORMANCE UNIT AWARD NOTICE
		

		
			 
		

		
			UNDER THE
		

		
			SUMMIT MATERIALS, INC.
		

		
			2015 OMNIBUS INCENTIVE PLAN
		

		
			 
		

		
			Summit Materials, Inc.  (the “Company”), pursuant to its 2015 Omnibus Incentive Plan (the “Plan”), hereby grants to the Participant set forth below the number of Restricted Stock Units set forth below (the “Performance Units”).  The Performance Units are subject to all of the terms and conditions as set forth herein, in the Performance Unit Agreement attached hereto and in the Plan, all of which are incorporated herein in their entirety.  Capitalized terms not otherwise defined herein shall have the meaning set forth in the Plan.
		

		
			 
		

		
			Participant:  Participant_Name
		

		
			 
		

		
			Date of Grant:  Date_of_Grant
		

		
			 
		

		
			Performance Period:  [January 1, 2016 through December 31, 2018]
		

		
			 
		

		
			Target Number of Performance Share Units:  Number_of_Shares (subject to adjustment in accordance with the terms set forth in the Agreement and the Plan)
		

		
			 
		

		
			Vesting Schedule:  
		

		
			 
		

		
			1.Determination of Vested Performance Units.  
		

		
			 
		

		
			(a)The Performance Units shall become vested based on the Total Shareholder Return of the Company relative to the Total Shareholder Returns of each Peer Group Member. The Committee shall determine (i) the Total Shareholder Return for the Company for the Performance Period, (ii) the Total Shareholder Return for each Peer Group Member for the Performance Period, and (iii) the Percentile Rank for the Company. The Company’s rank as a percentile will be calculated excluding the Company from the peer group. All determinations with respect to Total Shareholder Return Position shall be made by the Committee in its sole discretion, and the applicable performance targets shall not be achieved and the Performance Units shall not vest until the Committee certifies that such performance targets have been met (such date, the “Determination Date”).
		

		
			 
		

		
			(b)The total number of Performance Units that become vested shall be equal to (x) the target number of Performance Units granted under this Agreement, multiplied by (y) the Achievement Percentage, and rounded down to the nearest whole Performance Unit. 
		

		
			 
		

		
			2.Definitions. For the purposes of this Award Notice:
		

		
			 
		

		
			(a)The “Achievement Percentage” shall mean the “Achievement Percentage” specified with respect to the percentile of Relative Total Shareholder Return specified below, or 
		

		
			 
		

		
			 
		

		 

 

		

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			a percentage determined using linear interpolation if actual performance falls between threshold and target, or between target and maximum levels.  
		

		
			 
		

			
					
						 

					
					
						 

					
					
						 

					
					
						 

					
					
						 

					
					
						 

				
	
					
						Level of
Achievement

					
					
						    

					
					
						Relative Total Shareholder Return
Position

					
					
						    

					
					
						Achievement Percentage

					
					
						 

				
	
					
						Below Threshold

					
					
						 

					
					
						Less than 30th Percentile

					
					
						 

					
					
						0%

					
					
						 

				
	
					
						Threshold

					
					
						 

					
					
						30th Percentile

					
					
						 

					
					
						50%

					
					
						 

				
	
					
						Target 

					
					
						 

					
					
						50th Percentile

					
					
						 

					
					
						100%

					
					
						 

				
	
					
						Maximum 

					
					
						 

					
					
						75th Percentile and above

					
					
						 

					
					
						200%

					
					
						 

				

		
			 
		

		
			Notwithstanding anything to the contrary herein, if the Total Shareholder Return for the Company is negative over the Performance Period, then the Achievement Percentage in respect of any the Total Shareholder Return Position shall not exceed 100%. 
		

		
			 
		

		
			(a)“Beginning Price” is the average per share closing price of a share or share equivalent on the applicable stock exchange for the period of 20 trading days immediately preceding the first day of the Performance Period.  
		

		
			 
		

		
			(b)“Ending Price” is the average per share closing price of a share or share equivalent on the applicable stock exchange for the period of 20 trading days immediately preceding and including the last day of the Performance Period.  
		

		
			 
		

		
			(c)“Peer Group Members” means the S&P Building and Construction Select Industry Index, as composed on the date that is 30 trading days prior to the commencement of the Performance Period. 
		

		
			 
		

		
			(d)“Total Shareholder Return” of either the Company or a Peer Group Member is the result of dividing (1) the sum of the cumulative value of an entity’s dividends for the Performance Period, plus the entity’s Ending Price minus the Beginning Price, by (2) the Beginning Price. For the purposes of determining the cumulative value of the Company’s or a Peer Group Member’s dividends during the Performance Period, it will be assumed that all dividends declared and paid during the Performance Period were reinvested in the Company, or such Peer Group Member, as applicable, on the ex-dividend date, using the closing price on such date. The aggregate shares, or fractional shares thereof, that will be assumed to be purchased as part of the reinvestment calculation will be multiplied by the Ending Price to determine the cumulative value of the Company’s, or such Peer Group Member’s,  dividends for the Performance Period. Any Peer Group Member (i) which merges with or is acquired by another company shall not be a Peer Group Member for purposes of calculating Relative Total Shareholder Return, and (ii) which is in reorganization under Chapter 11 of the Bankruptcy Code on the last date of the Performance Period, such Peer Group Member shall be deemed to have a Total Shareholder Return of -100%.
		

		
			 
		

		
			(e)“Relative Total Shareholder Return Position” shall be the performance percentile of the Total Shareholder Return of the Company, as compared to the Total Shareholder Return for each Peer Group Member. The percentile shall be determined by ranking the Company and each Peer Group Member according to its respective Total Shareholder Return 
		

		
			 
		

		
			
		

		
			

		 

 

		

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			for the Performance Period, from minimum to maximum, with the lowest Total Shareholder Return being assigned a rank of one. The Company’s percentile rank shall be calculated by dividing the Company’s rank by the total number of Peer Group Members (including the Company).  
		

		
			 
		

		
			3.Change in Control.  
		

		
			 
		

		
			(a)If, in connection with a Change in Control, the Performance Units are not be continued, converted, assumed, or replaced by the Company or a successor entity thereto in connection with such Change in Control, then a number of Performance Units equal to the target number of Performance Units shall become vested immediately prior to such Change in Control. 
		

		
			 
		

		
			(b)If the Participant’s employment with the Company and its Affiliates (or a successor) is terminated by the Company without Cause or by the Participant as a result of a Constructive Termination during the two-year period following a Change in Control, then a pro rata portion of the target number of Performance Units shall become vested as of the date of such termination of employment. 
		

		
			 
		

		
			4.Other Definitions.  
		

		
			 
		

		
			(a)The term “Constructive Termination” shall have the meaning set forth in any employment agreement entered into by and between the Participant and the Company or an Affiliate, or if no such agreement exists, any of the following, without the Participant’s prior written consent: (A) a material reduction in the Participant’s base salary or, to the extent applicable, target bonus (other than in connection with an across the board reduction in compensation of similarly situated employees, of, on an individual-by-individual basis, less than 10%); (B) a material diminution of the Participant’s authority, duties or responsibilities; (C) a relocation of the Participant’s primary place of business by more than fifty (50) miles from its then-current location; (D) any material breach by the Company of any written agreement relating to the Participant’s compensation (including any equity awards); provided that that any such event shall constitute a Constructive Termination only if the Participant gives written notice to the Company within 10 days of the later of its occurrence of Executive’s knowledge thereof and the Company fails to cure such event within 30 days after receipt from the Participant of written notice of such event; provided,  further, that a “Constructive Termination” shall cease to exist for an event on the 60th day after the lapse of any such cure period. 
		

		
			 
		

		
			***
		

		
			 
		

		
			
		

		
			

		 

 

		

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THE UNDERSIGNED PARTICIPANT ACKNOWLEDGES RECEIPT OF THIS PERFORMANCE UNIT AWARD NOTICE, THE PERFORMANCE UNIT AGREEMENT, AND THE PLAN, AND, AS AN EXPRESS CONDITION TO THE GRANT OF PERFORMANCE UNITS HEREUNDER, AGREES TO BE BOUND BY THE TERMS OF THIS PERFORMANCE UNIT AWARD NOTICE, THE PERFORMANCE UNIT AGREEMENT, AND THE PLAN.
		

		
			 
		

		
			 
		

			
					
						SUMMIT MATERIALS, INC.

					
					
						 

					
					
						PARTICIPANT1

				
	
					
						 

					
					
						 

					
					
						 

				
	
					
						 

					
					
						 

					
					
						 

				
	
					
						 

					
					
						 

					
					
						 

				
	
					
						 

					
					
						 

					
					
						 

				
	
					
						By:

					
					
						 

					
					
						 

				
	
					
						Title:

					
					
						 

					
					
						 

				

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		

		
			 
		

		
			1     To the extent that the Company has established, either itself or through a  third-party plan administrator, the ability to accept this award electronically, such acceptance shall constitute Participant’s signature hereof.
		

		
			 
		

		
			 
		

		
			 
		

		
			 
		

		
			

		 

 

PERFORMANCE UNIT AGREEMENT
		

		
			 
		

		
			UNDER THE
		

		
			SUMMIT MATERIALS, Inc. 
		

		
			2015 OMNIBUS INCENTIVE PLAN
		

		
			 
		

		
			Pursuant to the Performance Unit Award Notice (the “Award Notice”) delivered to Participant (as defined in the Award Notice), and subject to the terms of this Performance Unit Agreement and the Summit Materials, Inc.  2015 Omnibus Incentive Plan (the “Plan”), Summit Materials, Inc.  (the “Company”) and Participant agree as follows.   
		

		
			 
		

		
			1.Definitions.  Capitalized terms not otherwise defined herein shall have the same meanings as in the Plan.  The following terms shall have the following meanings for purposes of this Agreement:
		

		
			 
		

		
			(a)“Agreement” shall mean this Performance Unit Agreement including (unless the context otherwise requires) the Award Notice.
		

		
			 
		

		
			(b)“Date of Grant” shall mean the “Date of Grant” listed in the Award Notice. 
		

		
			 
		

		
			(c)“Restrictive Covenant Violation” shall mean Participant’s breach of the Restrictive Covenants listed on Appendix A or any covenant regarding confidentiality, competitive activity, solicitation of the Company’s vendors, suppliers, customers, or employees, or any similar provision applicable to or agreed to by Participant.  
		

		
			 
		

		
			(d)“Retirement” shall mean the Participant’s termination of employment with the Company and its Affiliates, other than for Cause or while grounds for Cause exist, and other than due to the Participant’s death or during the Participant’s Disability, following the date on which (i) the Participant attained the age of 62 years old, and (ii) the number of completed years of the Participant’s employment with the Company and/or its Affiliates is at least 5.
		

		
			 
		

		
			(e)  “Shares” shall mean the number of shares of Common Stock listed in the Award Notice as “Number of Shares of Common Stock Subject to Performance Units”.
		

		
			 
		

		
			2.Grant of Performance Units.    Subject to the terms and conditions set forth herein and in the Plan, the Company hereby grants to Participant the number of Performance Units provided in the Award Notice (with each Performance Unit representing an unfunded, unsecured right to receive one share of Common Stock).  The Company may make one or more additional grants of Performance Units to Participant under this Agreement by providing Participant with a new Award Notice, which may also include any terms and conditions differing from this Agreement to the extent provided therein.  The Company reserves all rights with respect to the granting of additional Performance Units hereunder and makes no implied promise to grant additional Performance Units. 
		

		
			 
		

		
			3.Vesting.  Subject to the conditions contained herein and in the Plan, the Performance Units shall vest and the restrictions on such Performance Units shall lapse as provided in the Award Notice.  
		

		
			 
		

		
			
		

		
			

		 

 

		

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4.Settlement of Performance Units.    The provisions of Section 9(d) of the Plan are incorporated herein by reference and made a part hereof.
		

		
			 
		

		
			5.Treatment of Performance Units Upon Termination.  
		

		
			 
		

		
			(a)Upon any Termination occurring prior to a Determination Date (as defined in the Award Notice), except as set forth in the Award Notice or the Performance Unit Agreement, all unvested Performance Units shall be forfeited immediately upon such Termination and revert back to the Company without any consideration paid in respect thereof.  In addition, upon any Termination for Cause, all vested Performance Units which have not been settled in accordance with Section 4 hereof shall be forfeited immediately upon such Termination and revert back to the Company without any consideration paid in respect thereof. As a pre-condition to a Participant’s right to any vesting as a result of any Termination Date, or following any Termination Date, the Participant shall deliver a release of claims in favor of the Company and its affiliates in a form satisfactory to the Committee or its designee.
		

		
			 
		

		
			(b)In the event the Participant’s employment with the Company and its Subsidiaries is terminated by the Company or any Subsidiary due to or during Participant’s Disability or due to the Participant’s death, as a result of Participant’s Retirement, by the Company without Cause, or by the Participant as a result of a Constructive Termination, a pro-rated number of the Performance Units granted hereunder shall remain outstanding and eligible to vest based on (and to the extent) the Committee’s determines that the applicable performance conditions have been satisfied on the Determination Date, so long as no Restrictive Covenant Violation occurs, as determined by the Committee, or its designee, in its sole discretion, prior to the applicable vesting date, with such pro-rated number of Performance Shares which remain outstanding calculated based on the number of days in the Performance Period prior to the Termination Date relative to the number of the days in the full Performance Period. As a pre-condition to a Participant’s right to continued vesting following Retirement, the Committee, or its designee, may require the Participant to certify in writing prior to each applicable vesting date that no Restrictive Covenant Violation has occurred. 
		

		
			 
		

		
			(c)The Participant’s rights with respect to the Performance Units shall not be affected by any change in the nature of the Participant’s employment so long as the Participant continues to be an employee of the Company or any of its Subsidiaries.  Whether (and the circumstances under which) employment has been terminated and the determination of the date of Termination for the purposes of this Agreement shall be determined by the Committee (or, with respect to any Participant who is not a director or “officer” as defined under Rule 16a-1(f) under the Exchange Act, its designee, whose good faith determination shall be final, binding, and conclusive; provided, that such designee may not make any such determination with respect to the designee’s own employment for purposes of the Performance Units). 
		

		
			 
		

		
			6.Restrictions on Transfer.  The Participant may not assign, alienate, pledge, attach, sell, or otherwise transfer or encumber the Performance Units or the Participant’s right under the Performance Units to receive Shares, except 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 the Company or an Affiliate; 
		

		
			 
		

		
			
		

		
			

		 

 

		

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provided, that the designation of a beneficiary (if permitted by the Committee) shall not constitute an assignment, alienation, pledge, attachment, sale, transfer, or encumbrance. 
		

		
			 
		

		
			7.Rights as Stockholder.   Participant or a permitted transferee of the Performance Units shall have no rights as a stockholder with respect to any share of Common Stock underlying a Performance Unit unless and until Participant shall have become the holder of record or the beneficial owner of such Common Stock, and no adjustment shall be made for dividends or distributions or other rights in respect of such share of Common Stock for which the record date is prior to the date upon which Participant shall become the holder of record or the beneficial owner thereof. 
		

		
			 
		

		
			8.Tax Withholding.  The provisions of Section 15(d) of the Plan are incorporated herein by reference and made a part hereof. 
		

		
			 
		

		
			9.Restrictive Covenants.  Participant acknowledges and recognizes the highly competitive nature of the businesses of the Company and its Affiliates and accordingly agrees to the provisions of Appendix A to this Agreement (the “Restrictive Covenants”).  For the avoidance of doubt, the Restrictive Covenants contained in this Agreement are in addition to, and not in lieu of, any other restrictive covenants or similar covenants or agreements between Participant and the Company or any of its Affiliates. 
		

		
			 
		

		
			10.Repayment of Proceeds; Clawback Policy.    If a Restrictive Covenant Violation occurs or the Company discovers after a Termination that grounds existed for Cause at the time thereof, then Participant shall be required, in addition to any other remedy available (on a non-exclusive basis), to pay to the Company, within ten (10) business days of the Company’s request to Participant therefor, an amount equal to the aggregate after-tax proceeds (taking into account all amounts of tax that would be recoverable upon a claim of loss for payment of such proceeds in the year of repayment) Participant received upon the sale or other disposition of, or distributions in respect of, the Performance Units and any Shares issued in respect thereof.  Any reference in this Agreement to grounds existing for a Termination with Cause shall be determined without regard to any notice period, cure period, or other procedural delay or event required prior to finding of or Termination with Cause.  The Performance Units and all proceeds of the Performance Units shall be subject to the Company’s clawback policy, as in effect from time to time, to the extent Participant is a director or “officer” as defined under Rule 16a-1(f) of the Exchange Act.
		

		
			 
		

		
			11.No Right to Continued Employment.  Neither the Plan nor this Agreement nor the Participant’s receipt of the Performance Units hereunder shall impose any obligation on the Company or any Affiliate to continue the employment or engagement of the Participant.  Further, the Company or any Affiliate (as applicable) may at any time terminate the employment or engagement of such Participant, free from any liability or claim under the Plan or this Agreement, except as otherwise expressly provided herein.   
		

		
			 
		

		
			12.Notice.    Every notice or other communication relating to this Agreement between the Company and Participant shall be in writing, and shall be mailed or delivered to the party for whom it is intended at such address as may from time to time be designated by it in a notice mailed or delivered to the other party as herein provided; provided, that, unless and until some 
		

		
			 
		

		
			
		

		
			

		 

 

		

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other address be so designated, all notices or communications by Participant to the Company shall be mailed or delivered to the Company at its principal executive office, to the attention of the Chief Human Resources Officer or another officer designated by the Company, and all notices or communications by the Company to Participant may be given to Participant personally or may be mailed to Participant at Participant’s last known address, as reflected in the Company’s records.  Notwithstanding the above, all notices and communications between Participant and any third-party plan administrator shall be mailed, delivered, transmitted, or sent in accordance with the procedures established by such third-party plan administrator and communicated to Participant from time to time. 
		

		
			 
		

		
			13.Binding Effect.   This Agreement shall be binding upon the heirs, executors, administrators, and successors of the parties hereto.
		

		
			 
		

		
			14.Waiver.  The Participant acknowledges that a waiver by the Company of breach of any provision of this Agreement shall not operate or be construed as a waiver of any other provision of this Agreement, or of any subsequent breach by the Participant or any other participant in the Plan.  
		

		
			 
		

		
			15.Governing Law; Venue; Language.  This Agreement shall be governed by and construed in accordance with the laws of the State of Delaware.  Any suit, action, or proceeding with respect to this Agreement, or any judgment entered by any court in respect of any thereof, shall be brought in any court of competent jurisdiction in the State of Delaware, and each of the Participant and the Company each hereby irrevocably waives (a) any objections which it may now or hereafter have to the laying of the venue of any suit, action, or proceeding arising out of or relating to this Agreement brought in any court of competent jurisdiction in the State of Delaware, (b) any claim that any such suit, action, or proceeding brought in any such court has been brought in any inconvenient forum, and (c) any right to a jury trial.   
		

		
			 
		

		
			16.Award Subject to Plan.  By entering into this Agreement, the Participant agrees and acknowledges that the Participant has received and read a copy of the Plan.  The Performance Units granted hereunder are subject to the Plan.  The terms and provisions of the Plan, as it may be amended from time to time, are hereby incorporated herein by reference.  In the event of a conflict between any term or provision contained herein and a term or provision of the Plan, the applicable terms and provisions of this Agreement will govern and prevail.  
		

		
			 
		

		
			17.Severability.  Should any provision of this Agreement be held by a court of competent jurisdiction to be unenforceable or invalid for any reason, the remaining provisions of this Agreement shall not be affected by such holding and shall continue in full force in accordance with their terms.  
		

		
			 
		

		
			18.Successors in Interest.  Any successor to the Company shall have the benefits of the Company under, and be entitled to enforce, this Agreement.  Likewise, the Participant’s legal representative shall have the benefits of Participant under, and be entitled to enforce, this Agreement.  All obligations imposed upon the Participant and all rights granted to the Company under this Agreement shall be final, binding, and conclusive upon the Participant’s heirs, executors, administrators, and successors. 
		

		
			 
		

		
			
		

		
			

		 

 

		

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19.Data Privacy Consent.  The Participant hereby explicitly and unambiguously consents to the collection, use, and transfer, in electronic or other form, of the Participant’s personal data as described in this Agreement and any other Performance Unit grant materials by and among, as applicable, the Participant’s employer or contracting party (the “Employer”) and the Company for the exclusive purpose of implementing, administering, and managing the Participant’s participation in the Plan.  The Participant understands that the Company may hold certain personal information about the Participant, including, but not limited to, the Participant’s name, home address, and telephone number, work location and phone number, date of birth, social insurance number, or other identification number, salary, nationality, job title, hire date, any shares of stock or directorships held in the Company, details of all awards or any other entitlement to shares awarded, cancelled, exercised, vested, unvested, or outstanding in the Participant’s favor, for the purpose of implementing, administering, and managing the Plan (“Personal Data”).  The Participant understands that Personal Data may be transferred to any third parties assisting in the implementation, administration and management of the Plan, now or in the future, that these recipients may be located in the Participant’s country or elsewhere, and that the recipient’s country may have different data privacy laws and protections than the Participant’s country. The Participant understands that the Participant may request a list with the names and addresses of any potential recipients of the Personal Data by contacting the Participant’s local human resources representative. The Participant authorizes the recipients to receive, possess, use, retain and transfer the Personal Data, in electronic or other form, for the purposes of implementing, administering and managing the Participant’s participation in the Plan. The Participant understands that Personal Data will be held only as long as is necessary to implement, administer and manage the Participant’s participation in the Plan. The Participant understands that the Participant may, at any time, view Personal Data, request additional information about the storage and processing of Personal Data, require any necessary amendments to Personal Data or refuse or withdraw the consents herein, in any case without cost, by contacting in writing the Participant’s local human resources representative. Further, the Participant understands that the Participant is providing the consents herein on a purely voluntary basis. If the Participant does not consent, or if the Participant later seeks to revoke the Participant’s consent, the Participant’s employment status or service and career with the Employer will not be adversely affected; the only consequence of the Participant’s refusing or withdrawing the Participant’s consent is that the Company would not be able to grant Performance Units or other equity awards to the Participant or administer or maintain such awards. Therefore, the Participant understands that refusing or withdrawing the Participant’s consent may affect the Participant’s ability to participate in the Plan. For more information on the consequences of Participant’s refusal to consent or withdrawal of consent, the Participant understands that the Participant may contact the Participant’s local human resources representative.
		

		
			 
		

		
			20.Limitation on Rights; No Right to Future Grants; Extraordinary Item of Compensation.  By accepting this Agreement and the grant of the Performance Units evidenced hereby, the Participant expressly acknowledges that: (a) the Plan is discretionary in nature and may be suspended or terminated by the Company at any time; (b) the grant of the Performance Units is a one-time benefit that does not create any contractual or other right to receive future grants of restricted stock units, or benefits in lieu of restricted stock units; (c) all determinations with respect to future restricted stock unit grants, if any, including the grant date and the number of Shares granted, will be at the sole discretion of the Company; (d) the Participant’s 
		

		
			 
		

		
			
		

		
			

		 

 

		

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participation in the Plan is voluntary; (e) the value of the Performance Units is an extraordinary item of compensation that is outside the scope of the Participant’s employment contract, if any, and nothing can or must automatically be inferred from such employment contract or its consequences; (f) Performance Units are not part of normal or expected compensation for any purpose and are not to be used for calculating any severance, resignation, redundancy, end of service payments, bonuses, long-service awards, pension or retirement benefits or similar payments, the Participant waives any claim on such basis and, for the avoidance of doubt, the Performance Units shall not constitute an “acquired right” under the applicable law of any jurisdiction; (g) the value of Shares received upon settlement of the Performance Units may increase or decrease in value; and (h) the future value of the underlying Shares is unknown and cannot be predicted with certainty.  In addition, the Participant understands, acknowledges and agrees that the Participant will have no rights to compensation or damages related to Performance Unit proceeds in consequence of the termination of the Participant’s employment for any reason whatsoever and whether or not in breach of contract. 
		

		
			 
		

		
			21.Award Administrator.  The Company may from time to time designate a third party (an “Award Administrator”) to assist the Company in the implementation, administration, and management of the Plan and any Performance Units granted thereunder, including by sending Award Notices on behalf of the Company to Participants, and by facilitating through electronic means acceptance of this Agreement by Participants.  
		

		
			 
		

		
			22.Book Entry Delivery of Shares.  Whenever reference in this Agreement is made to the issuance or delivery of certificates representing one or more Shares, the Company may elect to issue or deliver such Shares in book entry form in lieu of certificates.
		

		
			 
		

		
			23.Electronic Delivery and Acceptance.  The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. The Participant hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.
		

		
			 
		

		
			24.Acceptance and Agreement by the Participant; Forfeiture upon Failure to Accept.  By accepting the Performance Units (including through electronic means), the Participant agrees to be bound by the terms, conditions, and restrictions set forth in the Plan, this Agreement, and the Company’s policies, as in effect from time to time, relating to the Plan. The Participant’s rights under the Performance Units will lapse 45 days from the Date of Grant, and the Performance Units will be forfeited on such date if the Participant shall not have accepted this Agreement by such date. For the avoidance of doubt, the Participant’s failure to accept this Agreement shall not affect the Participant’s continuing obligations under any other agreement between the Company and the Participant.  By accepting the Performance Units Participant expressly agrees that Participant has reviewed and agrees to abide by the Company’s Securities Trading Policy, available at [HYPERLINK], as such may be revised or updated from time to time.
		

		
			 
		

		
			25.No Advice Regarding Grant.  The Company is not providing any tax, legal, or financial advice, nor is the Company making any recommendations regarding the Participant’s participation in the Plan, or the Participant’s acquisition or sale of the underlying Shares. The 
		

		
			 
		

		
			
		

		
			

		 

 

		

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Participant is hereby advised to consult with his or her own personal tax, legal, and financial advisors regarding his or her participation in the Plan before taking any action related to the Plan.
		

		
			 
		

		
			26.Appendices for Non-U.S. Participants.  Notwithstanding any provisions in this Agreement, Participants residing and/or working outside the United States shall be subject to the Terms and Conditions for Non-U.S. Participants attached hereto as Appendix B. If the Participant relocates from the United States to another country, the Terms and Conditions for Non-U.S. Participants and the applicable Country-Specific Terms and Conditions will apply to the Participant, to the extent the Company determines that the application of such terms and conditions is necessary or advisable for legal or administrative reasons. Moreover, if the Participant relocates between any of the countries included in Country-Specific Terms and Conditions, the special terms and conditions for such country will apply to the Participant, to the extent the Company determines that the application of such terms and conditions is necessary or advisable for legal or administrative reasons. The Terms and Conditions for Non-U.S. Participants and the Country-Specific Terms and Conditions constitute part of this Agreement.
		

		
			 
		

		
			27.Imposition of Other Requirements.  The Company reserves the right to impose other requirements on the Participant’s participation in the Plan, on the Performance Units and on any Shares acquired under the Plan, to the extent the Company determines it is necessary or advisable for legal or administrative reasons, and to require the Participant to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.
		

		
			 
		

		
			28.Section 409A.  This Agreement is intended to comply with the provisions of Section 409A of the Code and the regulations promulgated thereunder.  Without limiting the foregoing, the Committee shall have the right to amend the terms and conditions of this Agreement in any respect as may be necessary or appropriate to comply with Section 409A of the Code or any regulations promulgated thereunder, including, without limitation, by delaying the issuance of the Shares contemplated hereunder.  
		

		
			 
		

		
			 
		

		
			

		 

 

		

			Appendix A - 1

		

Appendix A 
		

		
			Restrictive Covenants 
		

		
			 
		

		
			1.Confidentiality; Non-Compete; Non-Solicit; Non-Disparagement.
		

		
			 
		

			
	
			
				 (a)
			

			
	
			
			For the purposes of this Appendix A, any reference to the “Company” shall mean the Company and its Subsidiaries and Affiliates, collectively.  In view of the fact that Participant’s work for the Company brings Participant into close contact with many confidential affairs of the Company not readily available to the public, and plans for further developments, Participant agrees:

		
			 
		

		
			(i)Participant will not at any time (whether during or after Participant’s Employment with the Company): (x) retain or use for the benefit, purposes, or account of Participant or any other person; or (y) disclose, divulge, reveal, communicate, share, transfer, or provide access to any person outside the Company (other than its professional advisers who are bound by confidentiality obligations), any non-public, proprietary, or confidential information – including without limitation trade secrets, know-how, research and development, software, databases, inventions, processes, formulae, technology, designs, and other intellectual property, information concerning finances, investments, profits, pricing, costs, products, services, vendors, customers, clients, partners, investors, personnel, compensation, recruiting, training, advertising, sales, marketing, promotions, and government and regulatory activities and approvals – concerning the past, current, or future business, activities, and operations of the Company and/or any third party that has disclosed or provided any of same to the Company on a confidential basis (“Confidential Information”) without the prior written authorization of the Board, except as specifically necessary during the term of Participant’s Employment in order to perform the duties of his or her position and in the best interests of the Company.
		

		
			 
		

		
			(ii)“Confidential Information” shall not include any information that is: (x) generally known to the industry or the public other than as a result of Participant’s breach of this covenant or any breach of other confidentiality obligations by third parties; (y) made legitimately available to Participant by a third party without breach of any confidentiality obligation; or (z) required by law to be disclosed; provided, that Participant shall give prompt written notice to the Company of such requirement, disclose no more information than is so required, and cooperate with any attempts by the Company to obtain a protective order or similar treatment. 
		

		
			 
		

		
			(iii)Except as required by law, Participant will not disclose to anyone, other than Participant’s immediate family and legal or financial advisors, the existence or contents of this Agreement; provided, that Participant may disclose to any prospective future employer the provisions of Section (b) of this Appendix A provided they agree to maintain the confidentiality of such terms.
		

		
			 
		

		
			(iv)Upon termination of Participant’s Employment with the Company for any reason, Participant shall: (x) cease and not thereafter commence use of any Confidential Information or intellectual property (including, without limitation, any 
		

		
			 
		

		
			
		

		
			

		 

 

		

			Appendix A - 2

		

patent, invention, copyright, trade secret, trademark, trade name, logo, domain name, or other source indicator) owned or used by the Company, its Subsidiaries, or Affiliates; (y) immediately destroy, delete, or return to the Company, at the Company’s option, all originals and copies in any form or medium (including memoranda, books, papers, plans, computer files, letters, and other data) in Participant’s possession or control (including any of the foregoing stored or located in Participant’s office, home, laptop, or other computer, whether or not Company property) that contain Confidential Information or otherwise relate to the business of the Company, except that Participant may retain only those portions of any personal notes, notebooks, and diaries that do not contain any Confidential Information; and (z) notify and fully cooperate with the Company regarding the delivery or destruction of any other Confidential Information of which Participant is or becomes aware. 
		

		
			 
		

			
	
			
				 (b)
			

			
	
			
			Participant acknowledges and recognizes the highly competitive nature of the businesses of the Company and accordingly agrees as follows: 

		
			 
		

		
			(i)Participant will not, within twelve (12) months following the termination of Participant’s Employment with the Company (the “Post-Termination Period”) or during Participant’s Employment (collectively with the Post-Termination Period, the “Restricted Period”):
		

		
			 
		

			
	
			
				 (A)
			

			
	
			
			engage in any business involved, either directly or indirectly, in: (x) the acquisition of companies primarily engaged in the U.S. and Canadian aggregates and related downstream product sectors (including, but not limited to, asphalt, paving, cement, concrete, and concrete products) (any such company, a “Business”) or (y) the operation of any Business, in each case in any Restricted Area (any such business as described in subclauses (x) or (y), a “Competitive Business”); provided, that for the purposes of this Appendix A, “Restricted Area” shall mean any geographic area where each and any Service Recipient of the Participant during the Participant’s Employment conducts or conducted Business; provided,  further, that if the Service Recipient with respect to a Participant is the Operating Partnership, Summit Materials, LLC, or any of their respective successors thereto at any time during the Participant’s Employment, the Restricted Area shall be the United States and Canada;

		
			 
		

			
	
			
				 (B)
			

			
	
			
			enter the employ of, or render any services to, any person (or any division or controlled or controlling affiliate of any person) who or which engages in a Competitive Business;

		
			 
		

			
	
			
				 (C)
			

			
	
			
			acquire a financial interest in, or otherwise become actively involved with, any Competitive Business, directly or indirectly, as an individual, partner, shareholder, officer, director, principal, agent, trustee, or consultant; or

		
			 
		

			
	
			
				 (D)
			

			
	
			
			interfere with, or attempt to interfere with, business relationships (whether formed before, on, or after the date of this Agreement) between the Company and customers, clients, suppliers, partners, members, investors, or acquisition targets.

		
			 
		

		
			
		

		
			

		 

 

		

			Appendix A - 3

		

(ii)During the Restricted Period, Participant will not, whether on Participant’s own behalf or on behalf of or in conjunction with any person, directly or indirectly: 
		

		
			 
		

			
	
			
				 (A)
			

			
	
			
			solicit or encourage any employee of the Company to leave the Employment of the Company; or

		
			 
		

			
	
			
				 (B)
			

			
	
			
			hire any such employee who was employed by the Company as of the date of Participant’s termination of Employment with the Company or who left the Employment of the Company coincident with, or within one (1) year prior to or after, the termination of Participant’s Employment with the Company.

		
			 
		

		
			(iii)During the Restricted Period, Participant will not, whether on Participant’s own behalf or on behalf of or in conjunction with any person, directly or indirectly solicit or assist in soliciting in competition with the Company, the business of any client or prospective client: 
		

		
			 
		

			
	
			
				 (A)
			

			
	
			
			with whom Participant had personal contact or dealings on behalf of the Company during the one (1) year period preceding Participant’s termination of Employment; 

		
			 
		

			
	
			
				 (B)
			

			
	
			
			with whom employees reporting to Participant have had personal contact or dealings on behalf of the Company during the one (1) year immediately preceding Participant’s termination of Employment; or 

		
			 
		

			
	
			
				 (C)
			

			
	
			
			for whom Participant had direct or indirect responsibility during the one (1) year immediately preceding Participant’s termination of Employment. 

		
			 
		

		
			Notwithstanding anything to the contrary in this Agreement, Participant may, directly or indirectly own, solely as an investment, securities of any person which are publicly traded on a national or regional stock exchange or on the over-the-counter market if Participant (x) is not a controlling person of, or a member of a group which controls, such person and (y) does not, directly or indirectly, own 5% or more of any class of securities of such person. 
		

		
			 
		

			
	
			
				 (c)
			

			
	
			
			During the Restricted Period, Participant will not, directly or indirectly, solicit or encourage to cease to work with the Company any consultant then under contract with the Company.

		
			 
		

			
	
			
				 (d)
			

			
	
			
			Participant will not, other than as required by law or by order of a court or other competent authority, make or publish, or cause any other person to make or publish, any statement that is disparaging or that reflects negatively upon the Company, or that is or reasonably would be expected to be damaging to the reputation of the Company.

		
			 
		

			
	
			
				 (e)
			

			
	
			
			It is expressly understood and agreed that although Participant and the Company consider the restrictions contained in this Appendix A to be reasonable, if a final judicial determination is made by a court of competent jurisdiction that the time or territory or any other restriction contained in this Agreement is an unenforceable restriction against 

		
			 
		

		
			
		

		
			

		 

 

		

			Appendix A - 4

		

Participant, the provisions of this Agreement shall not be rendered void but shall be deemed amended to apply as to such maximum time and territory and to such maximum extent as such court may judicially determine or indicate to be enforceable. Alternatively, if any court of competent jurisdiction finds that any restriction contained in this Agreement is unenforceable, and such restriction cannot be amended so as to make it enforceable, such finding shall not affect the enforceability of any of the other restrictions contained herein. 
		

		
			 
		

			
	
			
				 (f)
			

			
	
			
			The period of time during which the provisions of this Appendix A shall be in effect shall be extended by the length of time during which Participant is in breach of the terms hereof as determined by any court of competent jurisdiction on the Company’s application for injunctive relief. 

		
			 
		

		
			2.Specific Performance; Survival.  
		

		
			 
		

			
	
			
				 (a)
			

			
	
			
			Participant acknowledges and agrees that the Company’s remedies at law for a breach or threatened breach of any of the provisions of this Appendix A would be inadequate and the Company would suffer irreparable damages as a result of such breach or threatened breach.  In recognition of this fact, Participant agrees that, in the event of such a breach or threatened breach, in addition to any remedies at law, the Company, without posting any bond, shall be entitled to suspend making any payments or providing any benefit otherwise required by this Agreement and obtain equitable relief in the form of specific performance, temporary restraining order, temporary or permanent injunction, or any other equitable remedy which may then be available. 

		
			 
		

			
	
			
				 (b)
			

			
	
			
			The provisions of this Appendix A shall survive the termination of Participant’s Employment for any reason. 

		
			 
		

		
			 
		

		
			

		 

 

		

			Appendix B - 1

		

APPENDIX B 
		

		
			 
		

		
			SUMMIT MATERIALS, INC. 
		

		
			2015 OMNIBUS INCENTIVE PLAN 
		

		
			PERFORMANCE UNIT AGREEMENT
		

		
			 
		

		
			TERMS AND CONDITIONS FOR NON-U.S. PARTICIPANTS 
		

		
			 
		

		
			Capitalized terms used but not otherwise defined herein shall have the meaning given to such terms in the Plan and the Performance Unit Agreement. 
		

		
			 
		

		
			1.Responsibility for Taxes. This provision supplements Section 8 of the Performance Unit Agreement: 
		

		
			 
		

		
			(a)       The Participant acknowledges that, regardless of any action taken by the Company or, if different, the Employer, the ultimate liability for all income tax, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items related to the Participant’s participation in the Plan and legally applicable to the Participant (“Tax-Related Items”) is and remains the Participant’s responsibility and may exceed the amount actually withheld by the Company or the Employer. The Participant further acknowledges that the Company and/or the Employer (i) make no representations or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect of the Performance Units, including, but not limited to, the grant, vesting or settlement of the Performance Units, the subsequent sale of Shares acquired pursuant to such settlement and the receipt of any dividends and/or any other distributions; and (ii) do not commit to and are under no obligation to structure the terms of the grant or any aspect of the Performance Units to reduce or eliminate the Participant’s liability for Tax-Related Items or achieve any particular tax result. Further, if the Participant is subject to Tax-Related Items in more than one jurisdiction between the Date of Grant and the date of any relevant taxable or tax withholding event, as applicable, the Participant acknowledges that the Company and/or the Employer (or former employer, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction. 
		

		
			 
		

		
			(b)       Prior to any relevant taxable or tax withholding event, as applicable, the Participant agrees to make adequate arrangements satisfactory to the Company and/or the Employer to satisfy all Tax-Related Items. In this regard, the Participant authorizes the Company and/or the Employer, or their respective agents, at their discretion, to satisfy their withholding obligations with regard to all Tax-Related Items by: 
		

		
			 
		

		
			(i)withholding from the Participant’s wages or other cash compensation paid to the Participant by the Company and/or the Employer; or
		

		
			 
		

		
			(ii)withholding from proceeds of the sale of Shares acquired at settlement of the Performance Units either through a voluntary sale or through a mandatory sale arranged by the Company (on the Participant’s behalf pursuant to this authorization) without further consent; or
		

		
			 
		

		
			
		

		
			

		 

 

		

			Appendix B - 2

		

(iii)withholding in Shares to be issued upon settlement of the Performance Units; 
		

		
			 
		

		
			provided,  however, that if the Participant is a Section 16 officer of the Company under the Exchange Act, then the Company will withhold in Shares upon the relevant taxable or tax withholding event, as applicable, unless the use of such withholding method is problematic under applicable tax or securities law or has materially adverse accounting consequences, in which case, the obligation for Tax-Related Items may be satisfied by one or a combination of methods (i) and (ii) above. 
		

		
			 
		

		
			(c)       Depending on the withholding method, the Company may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding rates or other applicable withholding rates, including maximum applicable rates, in which case the Participant will receive a refund of any over-withheld amount in cash and will have no entitlement to the Common Stock equivalent. If the obligation for Tax-Related Items is satisfied by withholding in Shares, for tax purposes, the Participant is deemed to have been issued the full number of Shares subject to the portion of the Performance Units that is settled, notwithstanding that a number of the Shares are held back solely for the purpose of paying the Tax-Related Items. 
		

		
			 
		

		
			(d)       Finally, the Participant agrees to pay to the Company or the Employer, any amount of Tax-Related Items that the Company or the Employer may be required to withhold or account for as a result of the Participant’s participation in the Plan that cannot be satisfied by the means previously described. The Company may refuse to issue or deliver the Shares or the proceeds of the sale of Shares if the Participant fails to comply with the Participant’s obligations in connection with the Tax-Related Items.
		

		
			 
		

		
			2.Nature of Grant. This provision supplements Section 20 of the Performance Unit Agreement: 
		

		
			 
		

		
			In accepting the grant of the Performance Units, the Participant acknowledges, understands and agrees that: 
		

		
			 
		

		
			(a)       the Performance Unit grant and the Participant’s participation in the Plan shall not create a right to employment or be interpreted as forming an employment or services contract with the Company or any Affiliate; 
		

		
			 
		

		
			(b)       the Performance Units and the Shares subject to the Performance Units are not intended to replace any pension rights or compensation; 
		

		
			 
		

		
			(c)       for purposes of the Performance Units, the date of Termination shall be the date the Participant is no longer actively providing services to the Company or its Affiliates (regardless of the reason for such termination and whether or not later to be found invalid or in breach of employment laws in the jurisdiction where the Participant is employed or the terms of the Participant’s employment agreement, if any), and unless otherwise expressly provided in this Agreement or determined by the Company, the Participant’s right to vest in the Performance Units under the Plan, if any, will terminate and the Participant’s right to have settled any vested Performance Units, if any, will be measured as of such date and will not be extended by any 
		

		
			 
		

		
			
		

		
			

		 

 

		

			Appendix B - 3

		

 
		

		
			notice period (e.g., the Participant’s period of service would not include any contractual notice period or any period of “garden leave” or similar period mandated under employment laws in the jurisdiction where the Participant is employed or the terms of the Participant’s employment agreement, if any); the Committee shall have the exclusive discretion to determine when the Participant is no longer actively providing services for purposes of the Performance Unit grant (including whether the Participant may still be considered to be providing services while on a leave of absence); 
		

		
			 
		

		
			(d)       unless otherwise provided in the Plan or by the Company in its discretion, the Performance Units and the benefits evidenced by this Agreement do not create any entitlement to have the Performance Units or any such benefits transferred to, or assumed by, another company nor to be exchanged, cashed out or substituted for, in connection with any corporate transaction affecting the Company’s Common Stock; and
		

		
			 
		

		
			(e)       neither the Company nor any Affiliate shall be liable for any foreign exchange rate fluctuation between the Participant’s local currency and the United States Dollar that may affect the value of the Performance Units or of any amounts due to the Participant pursuant to the settlement of the Performance Units or the subsequent sale of any Shares acquired upon settlement. 
		

		
			 
		

		
			3.Insider Trading Restrictions/Market Abuse Laws. The Participant acknowledges that, depending on his or her country of residence, the Participant may be subject to insider trading restrictions and/or market abuse laws, which may affect his or her ability to acquire or sell Shares or rights to Shares (e.g., Performance Units) under the Plan during such times as the Participant is considered to have “inside information” regarding the Company (as defined by the laws in the Participant’s country). Any restrictions under these laws or regulations are separate from and in addition to any restrictions that may be imposed under any applicable Company insider trading policy. The Participant is responsible for ensuring compliance with any applicable restrictions and is advised to consult his or her personal legal advisor on this matter.Exhibit

David McNinch

REVISED - January 19, 2016

Dear David:

I am pleased to confirm this offer for you to join Prothena Biosciences Inc ("Prothena" or the "Company''). We are confident in your knowledge, expertise and judgment, and believe your performance will meet our team's high-quality objectives and standards.

You will be appointed as Chief Commercial Officer by the Board of Directors of Prothena Corporation plc at its next meeting, scheduled to be held on February 24. In this position, you will report to Dale Schenk (CEO and President), although your duties, title and reporting relationship may change, based on the Company's needs and priorities. This is a full-time, exempt position.

Your starting salary will be $360,000.00/year, paid twice per month.  Your pay is subject to applicable taxes and withholdings.

Prothena embraces a pay-for-performance philosophy.  All employees are currently eligible for an annual cash bonus under the terms of the Company's cash incentive plan (the Prothena Corporation plc Incentive Compensation Plan).  The amount of these annual cash bonuses are determined by the Company on the basis of a number of factors, including industry competitiveness, Prothena's business strategy, and the degree to which Company, function and/or individual goals are met.  Your targeted cash bonus for the 2016 plan year (our fiscal year) will be 40% of your actual plan year salaried earnings.  Any earned cash bonus will be paid no later than March 15 in the year following the conclusion of the plan year.  The cash bonus plan is operated at the sole discretion of Prothena, is subject to review on a regular basis and may change from time to time.

In connection with your commencement of employment, you will also be eligible to receive an option to acquire 100,000 shares of Prothena Corporation plc. We will recommend that the Compensation Committee of the Board of Directors of Prothena Corporation pie approve this option award at its meeting scheduled for February 24, 2016.  The award will be subject to the terms and conditions of the Prothena Corporation plc Amended and Restated 2012 Long Term Incentive Plan and the terms and conditions of the award agreement for such a stock option.  The grant date of this stock option will be the first business day of the month following the Compensation Committee's approval of the option award or on such other date as determined by the Committee in its sole discretion.  The option exercise price will be equal to the closing price of Prothena Corporation plc's ordinary shares on the NASDAQ Global Select Market on that date.  Subject to your continued employment, the stock option will vest 25% after the first year of active service from your employment start date, and monthly at a rate of 1/48th of the award thereafter, such that the option will fully vest after a four-year period of continuous employment.

On the first day of the month following your employment start date, you will be eligible to participate in Prothena's comprehensive benefits program, including the company's health and welfare and retirement benefits plans, as well as the Prothena Biosciences Inc Amended and Restated Severance Plan1.  Details about these and other applicable plans will be provided separately.

Further information regarding onboarding requirements and/or documents needed before or after your employment start date (e.g., Employee Proprietary Information and Invention Assignment Agreement, Code of Conduct, Form 1-9 completion process, direct deposit information, Form W-4 allowance elections) will be provided separately.

Prothena's offer of employment is contingent upon our receiving satisfactory results from your references, background check and drug screening, as well as any other pre-employment testing that may be required due to the specific nature of our industry and/or your position.  Your employment is "at will."  This means that you and Prothena each have the right to terminate the employment relationship at any time, with or without cause.  Nothing in this letter should be taken as a guarantee of continued employment or a specific term of employment.  Further, all benefits and compensation provided by the Company are contingent upon your continued employment.

To ensure rapid and economical resolution of any disputes regarding your employment under this offer letter, the parties hereby agree that any and all claims, disputes or controversies of any nature whatsoever arising out of, or relating to, this offer letter, or its interpretation , enforcement, breach, performance or execution, your employment with the Company/ or the termination of such employment, shall be resolved, to the fullest extent permitted by law, by final, binding and confidential arbitration in San Francisco, CA conducted before a single arbitrator by JAMS, Inc. ("JAMS") or its successor, under the then applicable JAMS arbitration rules.  The parties each acknowledge that by agreeing to this arbitration procedure, they waive the right to resolve any such dispute, claim or demand through a trial by jury or judge or by administrative proceeding. You may be represented by legal counsel at any arbitration proceeding.  The arbitrator shall: (i) have the authority to compel adequate discovery for the resolution of the dispute and to award such relief as would otherwise be available under applicable law in a court proceeding; and (ii) issue a written statement signed by the arbitrator regarding the disposition of each claim and the relief, if any, awarded as to each claim, the reasons for the award, and the arbitrator's essential findings and conclusions on which the award is based.  The arbitrator, and not a court, shall also be authorized to determine whether the provisions of this paragraph apply to a dispute, controversy, or claim sought to be resolved in accordance with these arbitration procedures. The parties will share the costs of arbitration equally except that the Company will bear the cost of the arbitrator's fee, any other type of expense or cost that the employee would not be required to bear if the employee were to bring the dispute or claim in court. Both parties will be responsible for their own attorney's fees, and the arbitrator may not award attorney's fees unless a statute or contract at issue specifically authorizes such an award.  This arbitration provision does not apply to claims concerning worker's compensation or unemployment insurance claims. Nothing in this Agreement is intended to prevent either you or the Company from obtaining injunctive relief in court to prevent irreparable harm pending the conclusion of any arbitration.

_________________________

1 A summary of the benefits provided at your level under the Prothena Biosciences Inc Amended and Restated Severance Plan is attached

To accept our offer, please sign this letter and return it to Kevin Hickey by January 23, 2016.  By signing this letter, you acknowledge that it sets out our entire agreement between you and the Company and supersedes all prior oral and written agreements, understandings, commitments and practices.  No amendments to this agreement may be made except in writing signed by a duly authorized representative of Prothena.

We look forward to having you join Prothena.  If you have any questions, or would like additional information to help you reach a decision, please feel free to contact Kevin at (650) 278-1762.

Sincerely,

/s/ Dale Schenk                
Dale Schenk President and  CEO
Prothena Biosciences Inc

ACCEPTANCE:

/s/ David McNinch                                        1/30/16
David McNinch                            Date
                                

PROTHENA BIOSCIENCES INC AMENDED AND RESTATED SEVERANCE PLAN ATTACHMENT I

BENEFITS SUMMARY FOR ELIGIBLE EMPLOYEES – TIER 1

	
		
	SEVERANCE PAY
	Severance pay consists of fifty-two (52) Weeks of Pay plus your target annual bonus rate during the year in which your Severance Date occurs.

	CHANGE IN CONTROL SEVERANCE PAY (IF APPLICABLE)
	Severance pay consists of seventy-eight (78) Weeks of Pay plus 150% of your target annual bonus rate during the year in which your Severance Date occurs.

	SEVERANCE BENEFITS

	MEDICAL, DENTAL AND VISION BENEFITS COVERAGE CONTINUATION
	This Plan offers a special subsidy to your health care continuation coverage under federal law (“COBRA”) so that, for the period of time following your Severance Date that corresponds to the Weeks of Pay you are entitled to receive as severance pay (the “Health Subsidy Period”), you do not have to pay the full premium cost for health care coverage under the health plan(s) in which you participated while employed by the Employer. If you elect to exercise your rights under COBRA, for the first six (6) months of the Health Subsidy Period, you will only be required to pay the same share of the applicable premium that would apply if you were participating in the health plan(s) as an active employee. For the remaining Health Subsidy Period, you will be required to pay the full monthly COBRA premium and the Employer will reimburse you for the full cost of the COBRA premiums paid, less the amount that would apply if you were participating in the applicable health plan as an active employee. After the Health Subsidy Period expires, you will be required to pay the full applicable COBRA premium to continue your coverage for the remainder of the COBRA period and the reimbursements will cease. Any partial month will be rounded up to the next whole month. If you or your covered dependents cease to be eligible for COBRA or you become eligible for new healthcare coverage (other than through your spouse), the subsidy described above shall cease.  You must notify your Employer within ten (10) days following the date you become eligible for new healthcare coverage. In certain circumstances, the Employer may provide the value of this benefit in a single cash lump sum payment, subject to applicable withholding taxes.

	          CAREER TRANSITION ASSISTANCE
	Career transition assistance will be available from a career transition assistance firm selected and paid by the Employer for a period of twelve (12) months; however, you must begin the available career transition assistance program within sixty (60) days following your Severance Date.

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