Document:

EX-10.13

 Exhibit 10.13 

AMENDED AND RESTATED SETTLEMENT AGREEMENT 

AND MUTUAL RELEASE OF CLAIMS 

This Amended and Restated Settlement Agreement And Mutual Release Of Claims (the “Agreement”) is effective as of May 5,
2015 (the “Effective Date”), by and between Aimmune Therapeutics, Inc. (formerly known as Allergen Research Corporation), a Delaware corporation (the “Company”), and Bryan L. Walser (“you”). This
Agreement amends and restates in its entirety that certain Settlement Agreement and Mutual Release of Claims between you and the Company, dated as of April 4, 2014 (the “Prior Agreement”). 

1. Nature Of This Agreement; Effective Date Of This Agreement. 

(a) Nature Of This Agreement. This Agreement is being entered into by you and the Company pursuant to the provisions of
Section 7(a)(v) of the your Employment Agreement with the Company dated as of December 2, 2011 (the “Employment Agreement”) as consideration for the payment by the Company to you of severance amounts as set forth herein.

 (b) Effective Date Of This Agreement. This Agreement will become effective automatically, without any further or other signature
being required hereon, on and as of the Effective Date. The Prior Agreement became effective as of April 4, 2014, following your execution and delivery of this Agreement to the Company and non-revocation of this Agreement in a writing. 

2. Termination Of Employment. Your employment by the Company was terminated without cause effective as of 12:00 pm California time on
April 4, 2014 (the “Termination Date”) by a vote of the Company’s Board of Directors (the “Board”) in its meeting of April 3, 2014, and a Notice of Termination, as defined in the Employment Agreement,
to such effect was delivered to you by the Chairman of the Board in a meeting with you on April 4, 2014. If you so elect in writing to the Company, you may characterize to third parties, and in such case the Company also will so characterize to
third parties, your disengagement from the Company as a resignation by you, rather than as a termination by the Company, provided that if you so elect to characterize your disengagement from the Company as a resignation by you, your benefits under
your Employment Agreement will be treated as a termination of your employment by the Company without cause 
 3. Accrued Salary, Vacation
Pay, Bonus Or Other Payments; Severance And COBRA; Stock Options; Reimbursement; Unemployment Benefits; Outside Date For Payment Of Severance Amounts. 

(a) Accrued Salary, Vacation Pay, Bonus Or Other Payments. Except as provided in Section 3(b) hereof with respect to payment to
you of Base Salary severance payments and of the Bonus Severance Amount, and except as to post-employment termination COBRA payments and post-employment termination payment of a portion of your 2013 bonus, if earned, as set out further below in this
Section 3(a), you acknowledge that you were owed no salary, nor did the Company have, and thus you were not owed, any accrued and unused vacation or sick pay, nor were you owed any bonus payments, nor any other payments of any kind, by the
Company, as of and through the Termination Date, in each case through the Termination Date, 

 
which had not already been paid by the Terminate Date to you. The Company agrees that the remaining portion of your 2013 bonus was calculated and paid to you after enrollment was completed into
the Company’s Phase II clinical trial, when and upon the same terms such remaining 2013 bonus amounts were paid to other eligible Company employees on the terms previously determined by the Board. Such remaining 2013 bonus is referred to as
your “Remaining 2013 Potential Bonus Amount”. 
 (b) Amendment Of Employment Agreement As To Base Salary Severance
Payments And COBRA; Bonus Severance Payment; No Other Modification Of Employment Agreement. 
 (i) Amendment Of Employment
Agreement As To Base Salary Severance Payments. As permitted by Section 13 of the Employment Agreement, this Section 3(b)(i) amends and restates Section 7(a)(v) of the Employment Agreement in its entirety, as set forth immediately
below, effective as of the Effective Date of, and as defined in, the Employment Agreement, to read as follows: 
  

 

(v) Subject to Section 6(c), Section 7(e) and the Executive’s execution and delivery of a
Settlement Agreement and Mutual Release of Claims, the Executive’s Base Salary, as in effect at the Date of Termination, in accordance with Section 4(a) from the Date of Termination through the twelve (12)-month anniversary thereof,
payable over such term in accordance with the normal payroll practices of the Company, provided that the Company is not obligated to pay you any such payment from and after the date of any uncured breach by you of this Agreement or of the Settlement
Agreement and Mutual Release of Claims, as such uncured breach is determined in good faith by the Board. 
  

 
 Such Base
Salary severance payment was paid to you subject to your execution and delivery of this Agreement and your non-revocation of it by the Revocation Period End Date (As defined below). 

(ii) Amendment Of Employment Agreement As To COBRA, As permitted by Section 13 of the Employment Agreement, this
Section 3(b)(ii) amends and restates Section 7(f) of the Employment Agreement in its entirety, as set forth immediately below, effective as of the Effective Date of, and as defined in, the Employment Agreement, to read as follows: 

 
  

(f) COBRA Benefits. If the Executive elects to continue his health insurance coverage under the Consolidated
Omnibus Budget Reconciliation Act of 1985, as amended (“COBRA”) following the termination of his employment, then the Company shall pay the Executive’s monthly premium under COBRA 

  
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until the earlier of either (i) (A) in the event the Executive’s employment is terminated by the Company without Cause or by the Executive for Good Reason, at any time prior to a
Change of Control, then six (6) months following the Date of Termination, provided that such payment period may be extended to an additional six (6) months after such initial six (6)-month period by written agreement of the Company and the
Executive, or (B) in the event the Executive’s employment is terminated by the Company without Cause or by the Executive for Good Reason on or at any time within three (3) months prior to or twelve (12) months following a Change
of Control, then six (6) months following the Date of Termination, or (ii) the date upon which the Executive commences full-time employment or provides full-time consulting services to an entity other than the Company, provided that to the
extent required by law, such payments will be subject to the provisions of Section 7(h) below. 
  

 
 (iii) Bonus
Severance Payment. Under the severance matrix approved by the Board by a Unanimous Written Consent dated as of, and effective as of, the Revocation Period End Date (as defined below), subject to your execution and delivery of the Prior Agreement
and your non-revocation of it by the Revocation Period End Date, you were paid an amount equal to 100% of your maximum 2014 bonus as such maximum amount was approved previously by the Board, calculated as if all Board-approved criteria for payment
of such full maximum 2014 bonus amount had been met (the “Bonus Severance Payment”). The Bonus Severance Payment was paid to you on the first date upon which the Company paid a 2014 bonus payment to any other employee of the Company
for 2014 performance. 
 (iv) No Other Modification Of Employment Agreement. Except as amended by Sections 3(b)(i) and (ii), the
Employment Agreement remains without modification or amendment. 
 (c) Stock Options. You acknowledge that you have read and are
familiar with the terms of all stock options or other stock awards which were granted to you by the Company during the period of your employment by the Company. Effective as of the Termination Date, all documents for stock options granted to you
were amended to provide that such options, if not exercised prior to the date of your compete cessation of service with the Company (i.e., you are no longer providing any employee or consulting services for the Company or any of its
affiliates), were exercisable for a period of six (6) months after the date of such termination. You confirm that you sought, or waived seeking, such tax advice as you deemed necessary for your decision to effect, by this Agreement, such
six-month exercise period. Except as amended hereby, all stock options and stock awards granted to you by the Company remained without modification or amendment. 

(d) Reimbursement. You acknowledge that you were owed no expense reimbursement in connection with your employment by the Company
through the Termination Date which had not already been paid by the Termination Date to you, subject to any then-unreimbursed expense receipts for which you promptly sought reimbursement from the Company as to amounts incurred by you on or prior to
the Termination Date, and with such supporting documentation with respect thereto as is required per Company policy with respect to such reimbursement request. 

  
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 (e) Unemployment Benefits. The Company will not contest any claim filed by you for
unemployment compensation, nor any award for such benefits, as a result of the termination of your employment with the Company. 
 (f)
Outside Date For Payment Of Severance Amounts. Notwithstanding anything to the contrary in the Employment Agreement, as amended hereby, or in this Agreement, all amounts of severance payable to you under this Agreement must be paid to you not
later than December 31, 2015, subject to the cessation of such payments, as provided in this Agreement, due to uncured breach by you of the Employment Agreement and/or of this Agreement. 

4. Consulting Agreement. You acknowledge and agree that the Company entered into a Consulting Agreement (the “Consulting
Agreement”) with you, dated as of April 4, 2014. 
 5. Observer Rights. 

(a) In connection with your resignation from the Board effective as of the Effective Date, the Company agrees to invite you to attend all
meetings of the Board in a nonvoting observer capacity and, in this respect, will give you copies of all notices, minutes, consents, and other materials that it provides to its directors; provided, however, that you agree to hold in
confidence and trust and to act in a fiduciary manner with respect to all information so provided; and provided further, that the Company reserves the right to withhold any information and to exclude you from any meeting or portion
thereof if access to such information or attendance at such meeting could adversely affect the attorney-client privilege between the Company and its counsel or result in disclosure of trade secrets or a conflict of interest. 

(b) The rights set forth in Section 5(a) will terminate and be of no further force or effect (i) immediately before the consummation
of the Company’s initial public offering, (ii) when the Company first becomes subject to the periodic reporting requirements of Section 12(g) or 15(d) of the Securities and Exchange Act of 1934, as amended, or (iii) upon a Deemed
Liquidation Event (as such term is defined in the Company’s Amended and Restated Certificate of Incorporation, as may be amended from time to time) whichever event occurs first. 

6. Release Of Claims. The parties acknowledge and agree that the following release of claims agreed in the Prior Agreement remains in
full force and effect. 
 (a) Definition Of Claims. “Claims” means damages, costs and expenses, including, but not
limited to, court costs and attorneys’ fees, of any nature whatsoever whether or not known, claimed or suspected, fixed or contingent, arising or resulting from any manner of action or actions, cause or causes of action in law or in equity,
suits, debts, liens, contracts, agreements, promises, liabilities, claims, demands or losses, and including any claims not known to the releasing party when releasing such claim hereunder, which, if known to the releasing party might materially have
affected such party’s decision to release such claim. 

  
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 (b) Release Of Claims By You. Except with respect to the obligations expressly created by,
acknowledged, or arising out of this Agreement, effective as of the Termination Date, you acknowledge that you, on behalf of yourself and your agents, attorneys, representatives, predecessors, successors, assigns, heirs, executors and
administrators, and any persons acting by, through or under you or them, irrevocably jointly and severally released and forever discharged the Company and its Directors, officers, stockholders, employees, consultants, agents, attorneys,
representatives, predecessors, successors and assigns, and any persons acting by, through or under it or them, of and from any and all Claims which you then had, or previously had, or ever claimed to have had, against any of such released parties,
arising out of, based upon or related in any manner whatsoever to your involvement with the Company or with any such released parties through and including the Termination Date, or in connection with any activities conducted prior to the Termination
Date by you in connection with the Company and its business, including without limitation any claims for any salary, bonus, consulting fees, finders’ fees, commissions, expense reimbursement, or any other fees or any other compensation of any
kind, however arising, and including any claim as to any equity ownership of the Company or to ownership of any of the assets of the Company, or rights thereto, and all claims under any employment laws, including, but not limited to, claims of
unlawful discharge, breach of contract, breach of the covenant of good faith and fair dealing, fraud, violation of public policy, defamation, physical injury, emotional distress, claims for additional compensation or benefits arising out of your
employment or your separation of employment, claims under Title VII of the 1964 Civil Rights Act, as amended, the California Fair Employment and Housing Act, and any other laws and/or regulations relating to employment or employment discrimination,
including, without limitation, claims based on age or under the Age Discrimination in Employment Act or Older Workers Benefit Protection Act (all such matters referred to collectively as the “Released Matters”). This release did not
extend to any rights which as a matter of law cannot be waived and released. 
 (c) Release Of Claims By The Company. Except with
respect to the obligations expressly created by, acknowledged, or arising out of this Agreement, effective as of the Termination Date, the Company irrevocably released and forever discharged you and your agents, attorneys, representatives,
successors and assigns, and your heirs, executors, administrators, and in each case any persons acting by, through or under you or them, of and from all claims which the Company then had, previously had, or ever claimed to have had, against you and
any of such other released parties arising out of, based upon or related in any manner whatsoever to your involvement with the Company or with any such released parties through and including the Termination Date, or in connection with any activities
conducted prior to the Termination Date by you in connection with the Company and its business or otherwise based upon or related in any manner whatsoever to the Released Matters. This release did not extend to any rights which as a matter of law
cannot be waived and released. 

  
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 (d) Full Waiver. Each party hereto hereby expressly waived and relinquished any right or
benefit which such party then had, thereafter had or may have under any federal or state statute or common law principle relating to the mutual releases given hereunder and any such right or benefit relating to claims not known to the releasing
party when giving such release. The parties each expressly waived any benefits of Section 1542 of the Civil Code of the State of California, which provides as follows: 

“A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS WHICH THE CREDITOR DOES NOT KNOW OR SUSPECT TO EXIST IN HIS OR HER FAVOR AT THE TIME OF
EXECUTING THE RELEASE, WHICH IF KNOWN BY HIM OR HER MUST HAVE MATERIALLY AFFECTED HIS OR HER SETTLEMENT WITH THE DEBTOR.” 
 (e) No
Waiver As To Future Actions. No waiver was or is implied or given hereby by either party hereto as to any action taken by, or inaction by, the other party hereto which occurred or occurs after the Termination Date. 

(f) Authority, No Assignment, Indemnification. Each party hereto represents and warrants to the other party that (i) such
representing party had full legal right and authority to release the Claims released by such representing party, and that such representing party had taken or obtained all legal action or approval necessary for such representing party to execute and
deliver and perform its obligations hereunder, and (ii) such representing party was, as of the Termination Date, the sole and lawful owner of all right, title and interest in the respective Claims released by such representing party hereby and
that such representing party had not heretofore assigned or otherwise transferred any right, title or interest in any such Claims, and (iii) such representing party had not as of the Termination Date filed, nor has it or will file after the
Termination Date, any charge, action or claim based upon or related to any of the Released Matters. You will indemnify and hold the Company and the Company’s Directors, officers, stockholders, employees, consultants, agents, attorneys,
representatives, predecessors, successors and assigns, and any persons acting by, through or under it or them harmless with respect to any breach by you of your representations in this Section 6(f), The Company will indemnify and hold you and
your agents, attorneys, representatives, successors and assigns, and your heirs, executors, administrators, and in each case any persons acting by, through or under you or them, harmless with respect to any breach by the Company of its
representations in this Section 6(f) 
 (g) Discovery Rights. The Releases set forth in this Section 6 do not preclude the
Company or you from exercising any discovery rights each has against the other in connection with any civil litigation or arbitration proceedings involving any third party. 

(h) Intended Third Party Beneficiaries. The other parties not signatory hereto who are described in Sections 5(b) and (c) hereof
as released or indemnified parties were and are specifically intended by you as third party beneficiaries hereof, able to enforce their rights hereunder as if they were signatories hereto. 

7. No Disparagement; Certain Statements; Nonsolicitation. The parties hereto will not disparage each other, or any affiliate, agent or
representative of the other, including without limitation any of the Company’s Directors, officers, stockholders, employees, consultants, agents, attorneys, representatives, predecessors, successors, assigns, and any persons acting by, through
or under it or them, nor you nor any member of your family nor any of your consultants, agents, attorneys, representatives, predecessors, successors or assigns, nor any person acting by, through or under you or them. If the Company is contacted by a
prospective employer regarding you, the Company will provide only dates of employment and last position held and will release no other information or make any other statements about you or the circumstances regarding your separation from employment
with the Company other than such statement as may be agreed 

  
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by you and the Company in writing as to the disengagement by you from the Company. You will not solicit any employee of or consultant to, or customer of, or other contracting party with, the
Company to terminate or alter their relationship with the Company. Reference is made to the provisions of Section 2(a) hereof with respect to your election to state that you have resigned from the Company. 

8. Survival Of Certain Obligations; Return Of Materials. 

(a) Survival Of Certain Obligations. Your obligations to the Company under any employee invention assignment and/or confidentiality
agreement between you and the Company survived the termination of your employment with the Company from and after the Termination Date. Reference is made to Section 8 of your Employment Agreement as to assignment by you to the Company of
certain intellectual property rights and as to the other matters set forth therein, which Section 8 is incorporated herein by reference, and which Section 8 and the obligations thereunder, pursuant to Section 16 of the Employment
Agreement, survived the termination of your employment with the Company. You will treat as confidential and proprietary to the Company, and you promptly returned to the Company or confirmed to the Company in writing that you have permanently erased
from your computer(s) and have destroyed all paper copies of, all materials related to the Company supplied by the Company to you prior to, on and after the Termination Date which were marked as confidential or proprietary or which were informed in
writing by the Chief Executive Officer of the Company are confidential and proprietary, to the Company, except as otherwise determined by the Chief Executive Officer. You will not disclose to any party, other than to your attorneys, or except to the
extent required by law, or as is lawful in the course of your discharge of your duties as a member of the Board and/or under the Consulting Agreement (and subject to the confidentiality provisions contained in the Consulting Agreement) any such
information which is not at the time of disclosure otherwise public information through no breach by you of your obligations of confidentiality under this Section 7. 

(b) Return Of Materials. You previously returned to the Company, to the attention of the Chief Executive Officer of the Company, all
Company property, including without limitation all assets, documents, media files, and materials of any other nature pertaining to your work with the Company, and did not take with you or retain any assets, documents, media files or materials or
copies thereof containing any confidential or proprietary information of the Company, except as permitted by the Chief Executive Officer. You promptly delivered to the Company all uncommitted expense receipts as of the Termination Date for which you
intended to seek reimbursement from the Company as to amounts incurred by you on or prior to the Termination Date. 
 9.
Miscellaneous. 
 (a) Governing Law; Severability. This Agreement will be governed by and construed in accordance with the
laws of the State of California excluding that body of law relating to conflict of laws. If any provision of this Agreement is determined by a court of competent jurisdiction to be illegal or unenforceable, such provision will be enforced to the
maximum extent possible and the other provisions will remain effective and enforceable. 

  
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 (b) Successors and Assigns. This Agreement will inure to the benefit of and be binding
upon the respective legal successors and assigns of you and of the Company, and your heirs, executors and administrators, 
 (c)
Attorneys’ Fees And Costs. If any action is brought by either party hereto in connection with this Agreement, the prevailing party in such litigation will be entitled to recover from the losing party all reasonable fees and costs of
attorneys of the prevailing party incurred in the litigation. 
 (d) Counterparts. This Agreement may be executed in counterparts
which, taken together, will constitute one and the same agreement and will be effective as of the Effective Date. 
 (e) Entire
Agreement; Modification; Additional Documents; Covenant Not To Frustrate Purpose. This Agreement constitutes the entire agreement between the parties hereto with respect to the subject matter hereof, and supersedes in their entirety all prior
negotiations and agreements with respect to such subject matter, whether written or oral, provided that portions of the Employment Agreement, and of any written intellectual property assignment agreement(s) by you with the Company which survive by
their terms will so survive. This Agreement may not be altered or amended except by an instrument in writing executed by the parties hereto or their authorized representatives. Each party will execute and deliver any other documents or instruments
that may be reasonably necessary and appropriate to effectuate the terms of this Agreement. Both parties will act in good faith cooperation to effectuate the this Agreement and each party agrees that it will not perform any act or withhold from
performing any act in any manner which would frustrate the purposes of this Agreement. 
 (f) Review Of This Agreement; Advice Of
Counsel; Federal Age Anti-Discrimination Statute Periods. 
 (i) Review Of This Agreement; Advice Of Counsel. Each party hereto
confirms that such party has had the opportunity to read, review and consider all of the provisions of this Agreement, and to discuss this Agreement with whomever such party desired, including attorneys of such party’s own choosing, and if such
party has not consulted with an attorney, such party acknowledges having had the opportunity to have done so and that such party chose voluntarily and knowingly not to consult with an attorney, with respect to this Agreement and all matters related
thereto. The parties each confirm that they understand the provisions of this Agreement and its final and binding effect on them and that they are entering into this Agreement freely, voluntarily, and without duress or coercion. 

(ii) Federal Age Anti-Discrimination Statute Periods. You acknowledge that you were previously advised as follows, as required by
United States federal age anti-discrimination statutes: (A) you had up to twenty-one (21) days to consider the Prior Agreement prior to executing and delivering it, provided that you were able to execute and deliver the Prior Agreement,
subject to the revocation provisions set forth in the next clause of this Section 9(f)(ii), at any time within such 21-day period, and (B) you were entitled to revoke this Agreement within seven (7) days after the date of your
execution of the Prior Agreement, with the first day of such seven-day period being the day after your signature date shown below and the last such date of such seven-day period referred to herein as the “Revocation Period End
Date”. 

  
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 (g) Notices. Any notice required to be given under this Agreement will be in writing and
will be deemed to have been properly given and to be effective if delivered to the relevant party hereto to such party’s respective address below or to another address as designated by written notice given to the other party in accordance with
this Section 9(g), on the date of delivery if delivered in person, including by courier, such as but not limited to FedEx or UPS, or on the date of transmission by electronic mail (email) without failure of transmission; notices hereunder
may not be delivered by facsimile or by mail: 
 In the case of notices to the Company: 

Aimmune Therapeutics, Inc. 

Attention: Chief Executive Officer 

8000 Marina Boulevard #300 

Brisbane, CA 94005 
 Email:
sgdilly@aimmune.com 
 In the case of notices to you: 

Bryan L. Walser 
 [***] 

[***] 
 Email:
bryan.walser@gmail.com 
 (h) Dispute Resolution. 

(i) Mediation and Arbitration. Any dispute between the parties under or as to this Agreement will be finally resolved by binding
arbitration pursuant to this Section 9(h), other than a dispute as to which the Company, by determination of its Board, believes will cause irreparable harm to the Company and its stockholders if not pursued by the Company for equitable relief
such as but not limited to an injunction, which the Company may pursue by judicial means first, as provided in Section 9(h)(ii) hereof, Prior to the initiation of any arbitration proceeding, the parties will engage in mandatory mediation before
a mediator mutually selected from Judicial Arbitration and Mediation Services, Inc. (“JAMS”), Whenever a party hereto decides to institute arbitration proceedings, such party will give written notice to that effect to the other parties
hereto at which point the parties will initiate and complete the mediation process before the commencement of the arbitration process. Discovery in any arbitration under this Section 9(h) will be permitted as set forth in the Federal Rules of
Civil Procedure with respect to the performance by the parties of their obligations under this Agreement and such other matters as the arbitrator may determine (it being the intent of the parties that full discovery occur with respect to the salient
facts). The parties will apply the Rules of Evidence to the hearing. Any such arbitration will be conducted in San Francisco, California before a sole arbitrator selected from JAMS, or its successor, or if JAMS is no longer able to supply the
arbitrator, such arbitrator will be selected from the American Arbitration Association. Final resolution of any dispute through arbitration may include any remedy or 

  
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relief which the Arbitrator deems just and equitable, including any and all remedies provided by applicable state or federal statutes. At the conclusion of the arbitration, the Arbitrator will
issue a written decision that sets forth the essential findings and conclusions upon which the Arbitrator’s award or decision is based. Any award or relief granted by the Arbitrator hereunder will be final and binding on the parties hereto and
may be enforced by any court of competent jurisdiction. 
 (ii) Pursuit Of Judicial Resolution As To Certain Matters; Jurisdiction And
Venue. Any dispute as to which the Board, as provided in Section 9(h)(i) hereof, determines to pursue equitable relief, will be, unless the parties otherwise agree in writing, litigated in the appropriate courts located in San Francisco,
California, and the parties hereto consent to, and will not challenge, personal jurisdiction over themselves in, or subject matter jurisdiction in, such forum. 
  

							
	AIMMUNE THERAPEUTICS, INC.:	 		 	BRYAN L. WALSER, individually:
				
	By:	 	 /s/ Stephen Dilly
	 		 	 /s/ Bryan L. Walser

	Stephen Dilly	 		 	(Signature)
	Chief Executive Officer	 		 	

  
 10EX-10.15

 Exhibit 10.15 

AIMMUNE THERAPEUTICS, INC. 

2015 EMPLOYEE STOCK PURCHASE PLAN 

ARTICLE I. 
 PURPOSE,
SCOPE AND ADMINISTRATION OF THE PLAN 
 1.1 Purpose and Scope. The purpose of the Aimmune Therapeutics, Inc. 2015 Employee Stock
Purchase Plan, as it may be amended from time to time (the “Plan”), is to assist employees of Aimmune Therapeutics, Inc. (the “Company”) and its Designated Subsidiaries in acquiring a stock ownership interest in the
Company pursuant to a plan which is intended to qualify as an “employee stock purchase plan” under Section 423 of the Code and to help such employees provide for their future security and to encourage them to remain in the employment
of the Company and its Subsidiaries. 
 ARTICLE II. 

DEFINITIONS 
 Whenever the
following terms are used in the Plan, they shall have the meaning specified below unless the context clearly indicates to the contrary. The singular pronoun shall include the plural where the context so indicates. 

2.1 “Administrator” shall mean the Committee, or such individuals to which authority to administer the Plan has been
delegated under Section 7.1 hereof. 
 2.2 “Agent” means the brokerage firm, bank or other financial institution,
entity or person(s), if any, engaged, retained, appointed or authorized to act as the agent of the Company or an Employee with regard to the Plan. 

2.3 “Board” shall mean the Board of Directors of the Company. 

2.4 “Code” shall mean the Internal Revenue Code of 1986, as amended. 

2.5 “Committee” shall mean the Compensation Committee of the Board or another committee or subcommittee of the Board or the
Compensation Committee described in Article 7 hereof. 
 2.6 “Common Stock” shall mean the common stock of the Company.

 2.7 “Company” shall have such meaning as set forth in Section 1.1 hereof. 

2.8 “Compensation” of an Employee shall mean the regular straight-time earnings or base salary, bonuses and commissions paid
to the Employee from the Company on each Payday as compensation for services to the Company or any Designated Subsidiary, before deduction for any salary deferral contributions made by the Employee to any tax-qualified or nonqualified deferred
compensation plan, including overtime, shift differentials, vacation pay, salaried production schedule premiums, holiday pay, jury duty pay, funeral leave pay, paid time off, military pay, prior week adjustments and weekly bonus, but excluding
education or tuition 

 
reimbursements, imputed income arising under any group insurance or benefit program, travel expenses, business and moving reimbursements, income received in connection with any stock options,
restricted stock, restricted stock units or other compensatory equity awards and all contributions made by the Company or any Designated Subsidiary for the Employee’s benefit under any employee benefit plan now or hereafter established. Such
Compensation shall be calculated before deduction of any income or employment tax withholdings, but shall be withheld from the Employee’s net income. 

2.9 “Designated Subsidiary” shall mean each Subsidiary that have been designated by the Board or Committee from
time to time in its sole discretion as eligible to participate in the Plan, including any Subsidiary in existence on the Effective Date and any Subsidiary formed or acquired following the Effective Date, in accordance with Section 7.2 hereof.

 2.10 “Effective Date” shall mean immediately prior to the Company’s registration statement relating to its initial
public offering becomes effective, provided that the Board has adopted have approved the Plan prior to or on such date, subject to approval of the Plan by the Company’s stockholders. 

2.11 “Eligible Employee” shall mean an Employee who (a) is customarily scheduled to work at least twenty (20) hours
per week, (b) whose customary employment is more than five (5) months in a calendar year and (c) after the granting of the Option would not be deemed for purposes of Section 423(b)(3) of the Code to possess five percent
(5%) or more of the total combined voting power or value of all classes of stock of the Company or any Subsidiary. For purposes of clause (c), the rules of Section 424(d) of the Code with regard to the attribution of stock ownership shall
apply in determining the stock ownership of an individual, and stock which an Employee may purchase under outstanding options shall be treated as stock owned by the Employee. Notwithstanding the foregoing, the Administrator may exclude from
participation in the Plan as an Eligible Employee (x) any Employee that is a “highly compensated employee” of the Company or any Designated Subsidiary (within the meaning of Section 414(q) of the Code), or that is such a
“highly compensated employee” (A) with compensation above a specified level, (B) who is an officer and/or (C) is subject to the disclosure requirements of Section 16(a) of the Exchange Act and/or (y) any Employee
who is a citizen or resident of a foreign jurisdiction (without regard to whether they are also a citizen of the United States or a resident alien (within the meaning of Section 7701(b)(1)(A) of the Code)) if either (i) the grant of the
Option is prohibited under the laws of the jurisdiction governing such Employee, or (ii) compliance with the laws of the foreign jurisdiction would cause the Plan or the Option to violate the requirements of Section 423 of the Code;
provided that any exclusion in clauses (x), and/or (y) shall be applied in an identical manner under each Offering Period to all Employees of the Company and all Designated Subsidiaries, in accordance with Treasury Regulation
Section 1.423-2(e). 
 2.12 “Employee” shall mean any person who renders services to the Company or a Designated
Subsidiary in the status of an employee within the meaning of Section 3401(c) of the Code. “Employee” shall not include any director of the Company or a Designated Subsidiary who does not render services to the Company or a Designated
Subsidiary in the status of an employee within the meaning of Section 3401(c) of the Code. For purposes of the Plan, the 

  
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employment relationship shall be treated as continuing intact while the individual is on military leave, sick leave or other leave of absence approved by the Company or Designated Subsidiary and
meeting the requirements of Treasury Regulation Section 1.421-1(h)(2). Where the period of leave exceeds three (3) months, or such other period specified in Treasury Regulation Section 1.421-1(h)(2), and the individual’s right to reemployment is not guaranteed either by statute or by contract, the employment relationship shall be deemed to have terminated on the first day
immediately following such three (3)-month period, or such other period specified in Treasury Regulation Section 1.421-1(h)(2). 
 2.13
“Enrollment Date” shall mean the first date of each Offering Period. 
 2.14 “Exercise Date” shall mean
the last Trading Day of each Offering Period, except as provided in Section 5.2 hereof. 
 2.15 “Exchange Act” shall
mean the Securities Exchange Act of 1934, as amended. 
 2.16 “Fair Market Value” shall mean, as of any date, the value of
a Share determined as follows: 
 (a) If the Common Stock is (i) listed on any established securities exchange (such as the New York
Stock Exchange, the NASDAQ Global Market and the NASDAQ Global Select Market), (ii) listed on any national market system or (iii) listed, quoted or traded on any automated quotation system, its Fair Market Value shall be the closing sales
price for a Share as quoted on such exchange or system for such date or, if there is no closing sales price for a Share on the date in question, the closing sales price for a Share on the last preceding date for which such quotation exists, as
reported in The Wall Street Journal or such other source as the Administrator deems reliable; 
 (b) If the Common Stock is not
listed on an established securities exchange, national market system or automated quotation system, but the Common Stock is regularly quoted by a recognized securities dealer, its Fair Market Value shall be the mean of the high bid and low asked
prices for such date or, if there are no high bid and low asked prices for a Share on such date, the high bid and low asked prices for a Share on the last preceding date for which such information exists, as reported in The Wall Street
Journal or such other source as the Administrator deems reliable; or 
 (c) If the Common Stock is neither listed on an established
securities exchange, national market system or automated quotation system nor regularly quoted by a recognized securities dealer, its Fair Market Value shall be established by the Administrator in good faith. 

2.17 “Grant Date” shall mean the first Trading Day of an Offering Period. 

2.18 “New Exercise Date” shall have such meaning as set forth in Section 5.2(b) hereof. 

2.19 “Offering Period” shall mean such period of time commencing on such date(s) as determined by the Board or Committee, in
its sole discretion, and with respect to 

  
 3 

 
which Options shall be granted to Participants. The duration and timing of Offering Periods may be established or changed by the Board or Committee at any time, in its sole discretion.
Notwithstanding the foregoing, in no event may an Offering Period exceed twenty-seven (27) months. 
 2.20 “Option”
shall mean the right to purchase Shares pursuant to the Plan during each Offering Period. 
 2.21 “Option Price” shall mean
the purchase price of a Share hereunder as provided in Section 4.2 hereof. 
 2.22 “Parent” means any entity that is a
parent corporation of the Company within the meaning of Section 424 of the Code and the Treasury Regulations thereunder. 
 2.23
“Participant” shall mean any Eligible Employee who elects to participate in the Plan. 
 2.24 “Payday”
shall mean the regular and recurring established day for payment of Compensation to an Employee of the Company or any Designated Subsidiary. 

2.25 “Plan” shall have such meaning as set forth in Section 1.1 hereof. 

2.26 “Plan Account” shall mean a bookkeeping account established and maintained by the Company in the name of each
Participant. 
 2.27 “Section 423 Option” shall have such meaning as set forth in Section 3.1(b) hereof. 

2.28 “Share” shall mean a share of Common Stock. 

2.29 “Subsidiary” shall mean any entity that is a subsidiary corporation of the Company within the meaning of
Section 424 of the Code and the Treasury Regulations thereunder. In addition, with respect to any sub-plans adopted under Section 7.1(d) hereof which are designed to be outside the scope of Section 423 of the Code, Subsidiary shall
include any corporate or noncorporate entity in which the Company has a direct or indirect equity interest or significant business relationship. 

2.30 “Trading Day” shall mean a day on which the principal securities exchange on which the Common Stock is listed is open
for trading or, if the Common Stock is not listed on a securities exchange, shall mean a business day, as determined by the Administrator in good faith. 

2.31 “Withdrawal Election” shall have such meaning as set forth in Section 6.1(a) hereof. 

  
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 ARTICLE III. 

PARTICIPATION 
 3.1
Eligibility. 
 (a) Any Eligible Employee who shall be employed by the Company or a Designated Subsidiary on a given Enrollment Date
for an Offering Period shall be eligible to participate in the Plan during such Offering Period, subject to the requirements of Articles IV and V hereof, and the limitations imposed by Section 423(b) of the Code and the Treasury Regulations
thereunder. 
 (b) No Eligible Employee shall be granted an Option under the Plan which permits the Participant’s rights to purchase
Shares under the Plan, and to purchase stock under all other employee stock purchase plans of the Company, any Parent or any Subsidiary subject to the Section 423 of the Code (any such Option or other option, a
“Section 423 Option”), to accrue at a rate which exceeds $25,000 of fair market value of such stock (determined at the time the Section 423 Option is granted) for each calendar year in which any Section 423
Option granted to the Participant is outstanding at any time. For purposes of the limitation imposed by this subsection, 

(i) the right to purchase stock under a Section 423 Option accrues when the Section 423 Option (or any portion
thereof) first becomes exercisable during the calendar year, 
 (ii) the right to purchase stock under a Section 423
Option accrues at the rate provided in the Section 423 Option, but in no case may such rate exceed $25,000 of fair market value of such stock (determined at the time such option is granted) for any one calendar year, and 

(iii) a right to purchase stock which has accrued under a Section 423 Option may not be carried over to any other
Section 423 Option; provided that Participants may carry forward amounts so accrued that represent a fractional share of stock and were withheld but not applied towards the purchase of Shares under an earlier Offering Period, and may apply such
amounts towards the purchase of additional Shares under a subsequent Offering Period. 
 The limitation under this Section 3.1(b) shall be applied in
accordance with Section 423(b)(8) of the Code and the Treasury Regulations thereunder. 
 3.2 Election to Participate; Payroll
Deductions 
 (a) Except as provided in Section 3.3 hereof, an Eligible Employee may become a Participant in the Plan only by means
of payroll deduction. Each individual who is an Eligible Employee as of an Offering Period’s Enrollment Date may elect to participate in such Offering Period and the Plan by delivering to the Company a payroll deduction authorization no later
such period of time prior to the applicable Enrollment Date as determined by the Administrator, in its sole discretion. 

  
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 (b) Subject to Section 3.1(b) hereof, payroll deductions with respect to an Offering Period
(i) shall be equal to at least one percent (1%) of the Participant’s Compensation as of each Payday during the Offering Period following the Enrollment Date, but not more than the lesser of fifteen percent (15%) of the
Participant’s Compensation as of each Payday during the Offering Period following the Enrollment Date or $30,000 per Offering Period; and (ii) may be expressed as a whole number percentage. Amounts deducted from a Participant’s
Compensation with respect to an Offering Period pursuant to this Section 3.2 shall be deducted each Payday through payroll deduction and credited to the Participant’s Plan Account. 

(c) Following at least one (1) payroll deduction, a Participant may decrease (to as low as zero) the amount deducted from such
Participant’s Compensation only once during an Offering Period upon ten (10) calendar days’ prior written notice to the Company. A Participant may not increase the amount deducted from such Participant’s Compensation during
an Offering Period. 
 (d) Notwithstanding the foregoing, upon the completion of an Offering Period, each Participant in such Offering
Period shall automatically participate in the Offering Period that commences immediately following Offering Period at the same payroll deduction percentage as in effect at the completion of the prior Offering Period, unless such Participant delivers
to the Company a different election with respect to the successive Offering Period in accordance with Section 3.1(a) hereof, or unless such Participant becomes ineligible for participation in the Plan. 

3.3 Leave of Absence. During leaves of absence approved by the Company meeting the requirements of Treasury Regulation
Section 1.421-1(h)(2) under the Code, a Participant may continue participation in the Plan by making cash payments to the Company on his or her normal payday equal to his or her authorized payroll deduction. 

ARTICLE IV. 
 PURCHASE OF
SHARES 
 4.1 Grant of Option. Each Participant shall be granted an Option with respect to an Offering Period on the applicable
Grant Date. Subject to the limitations of Section 3.1(b) hereof, the number of Shares subject to a Participant’s Option as of any Exercise Date shall be determined by dividing (a) such Participant’s payroll deductions accumulated
prior to an Exercise Date and retained in the Participant’s Plan Account on such Exercise Date by (b) the applicable Option Price; provided that in no event shall a Participant be permitted to purchase during any Offering Period
more than 10,000 Shares (subject to any adjustment pursuant to Section 5.2 hereof). The Administrator may, for future Offering Periods, increase or decrease, in its absolute discretion, the maximum number of Shares that a Participant may
purchase during such future Offering Periods. Each Option shall expire on the Exercise Date for the applicable Offering Period immediately after the automatic exercise of the Option in accordance with Section 4.3 hereof, unless such Option
terminates earlier in accordance with Article 6 hereof. 
 4.2 Option Price. The “Option Price” per Share to be paid
by a Participant upon exercise of the Participant’s Option on the applicable Exercise Date for an Offering Period 

  
 6 

 
shall be equal to eighty five percent (85%) of the lesser of the Fair Market Value of a Share on (a) the applicable Grant Date and (b) the applicable Exercise Date; provided that
in no event shall the Option Price per Share be less than the par value per Share. 
 4.3 Purchase of Shares. 

(a) On the applicable Exercise Date for an Offering Period, each Participant shall automatically and without any action on such
Participant’s part be deemed to have exercised his or her Option to purchase at the applicable Option Price the largest number of whole Shares which can be purchased with the amount in the Participant’s Plan Account. Any balance, if any,
remaining in the Participant’s Plan Account (after exercise of such Participant’s Option) as of the Exercise Date shall be carried forward to the next Offering Period, unless the Participant has elected to withdraw from the Plan pursuant
to Section 6.1 hereof or, pursuant to Section 6.2 hereof, such Participant has ceased to be an Eligible Employee. Any balance not carried forward to the next Offering Period in accordance with the prior sentence promptly shall be refunded
to the applicable Participant. 
 (b) As soon as practicable following the applicable Exercise Date, the number of Shares Stock purchased
by such Participant pursuant to Section 4.3(a) hereof shall be delivered (either in share certificate or book entry form), in the Company’s sole discretion, to either (i) the Participant or (ii) an account established in the
Participant’s name at a stock brokerage or other financial services firm designated by the Company. If the Company is required to obtain from any commission or agency authority to issue any such Shares, the Company shall seek to obtain such
authority. Inability of the Company to obtain from any such commission or agency authority which counsel for the Company deems necessary for the lawful issuance of any such shares shall relieve the Company from liability to any Participant except to
refund to the Participant such Participant’s Plan Account balance, without interest thereon. 
 4.4 Transferability of Rights.

 (a) An Option granted under the Plan shall not be transferable, other than by will or the applicable laws of descent and distribution,
and is exercisable during the Participant’s lifetime only by the Participant. No option or interest or right to the Option shall be available to pay off any debts, contracts or engagements of the Participant or his or her successors in interest
or shall be subject to disposition by pledge, encumbrance, assignment or any other means whether such disposition be voluntary or involuntary or by operation of law by judgment, levy, attachment, garnishment or any other legal or equitable
proceedings (including bankruptcy), and any attempt at disposition of the option shall have no effect. 
 ARTICLE V. 

PROVISIONS RELATING TO COMMON STOCK 

5.1 Common Stock Reserved. Subject to adjustment as provided in Section 5.2 hereof, the maximum number of Shares that shall be
made available for sale under the Plan shall be the sum of (a) 390,128 Shares and (b) an annual increase on the first day of each year beginning in 2016 and ending in 2025 equal to the lesser of (i) one percent (1%) of the Shares
outstanding (on an as converted basis) on the last day of the immediately preceding fiscal year 

  
 7 

 
and (ii) such number of Shares as may be determined by the Board; provided, however, no more than 8,000,000 Shares may be issued under the Plan. Shares made available
for sale under the Plan may be authorized but unissued shares, treasury shares of Common Stock, or reacquired shares reserved for issuance under the Plan. 

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

(a) Changes in Capitalization. Subject to any required action by the stockholders of the Company, the number of Shares which have been
authorized for issuance under the Plan but not yet placed under Option, as well as the price per share and the number of Shares covered by each Option under the Plan which has not yet been exercised shall be proportionately adjusted for any increase
or decrease in the number of issued Shares resulting from a stock split, reverse stock split, stock dividend, combination or reclassification of the Common Stock, or any other increase or decrease in the number of Shares effected without receipt of
consideration by the Company; provided, however, that conversion of any convertible securities of the Company shall not be deemed to have been “effected without receipt of consideration.” Such adjustment shall be made by the
Administrator, whose determination in that respect shall be final, binding and conclusive. Except as expressly provided herein, no issuance by the Company of shares of stock of any class, or securities convertible into shares of stock of any class,
shall affect, and no adjustment by reason thereof shall be made with respect to, the number or price of Shares subject to an Option. 
 (b)
Dissolution or Liquidation. In the event of the proposed dissolution or liquidation of the Company, the Offering Period then in progress shall be shortened by setting a new Exercise Date (the “New Exercise Date”), and such
Offering Period shall terminate immediately prior to the consummation of such proposed dissolution or liquidation, unless provided otherwise by the Administrator. The New Exercise Date shall be before the date of the Company’s proposed
dissolution or liquidation. The Administrator shall notify each Participant in writing, at least ten (10) business days prior to the New Exercise Date, that the Exercise Date for the Participant’s Option has been changed to the New
Exercise Date and that the Participant’s Option shall be exercised automatically on the New Exercise Date, unless prior to such date the Participant has withdrawn from the Offering Period as provided in Section 6.1 hereof or the
Participant has ceased to be an Eligible Employee as provided in Section 6.2 hereof. 
 (c) Merger or Asset Sale. In the event
of a proposed sale of all or substantially all of the assets of the Company, or the merger of the Company with or into another corporation, each outstanding Option shall be assumed or an equivalent Option substituted by the successor corporation or
a Parent or Subsidiary of the successor corporation. In the event that the Option is not assumed or substituted, any Offering Periods then in progress shall be shortened by setting a New Exercise Date and any Offering Periods then in progress shall
end on the New Exercise Date. The New Exercise Date shall be before the date of the Company’s proposed sale or merger. The Administrator shall notify each Participant in writing, at least ten (10) business days prior to the New Exercise
Date, that the Exercise Date for the Participant’s Option has been changed to the New Exercise Date and that the Participant’s Option shall be exercised automatically on the New Exercise Date, unless prior to such date the Participant has
withdrawn from the Offering Period as provided in Section 6.1 hereof or the Participant has ceased to be an Eligible Employee as provided in Section 6.2 hereof. 

  
 8 

 5.3 Insufficient Shares. If the Administrator determines that, on a given Exercise Date,
the number of Shares with respect to which Options are to be exercised may exceed the number of Shares remaining available for sale under the Plan on such Exercise Date, the Administrator shall make a pro rata allocation of the Shares available for
issuance on such Exercise Date in as uniform a manner as shall be practicable and as it shall determine in its sole discretion to be equitable among all Participants exercising Options to purchase Shares on such Exercise Date, and unless additional
shares are authorized for issuance under the Plan, no further Offering Periods shall take place and the Plan shall terminate pursuant to Section 7.5 hereof. If an Offering Period is so terminated, then the balance of the amount credited to the
Participant’s Plan Account which has not been applied to the purchase of Shares shall be paid to such Participant in one (1) lump sum in cash within thirty (30) days after such Exercise Date, without any interest thereon. 

5.4 Rights as Stockholders. With respect to Shares subject to an Option, a Participant shall not be deemed to be a stockholder of the
Company and shall not have any of the rights or privileges of a stockholder. A Participant shall have the rights and privileges of a stockholder of the Company when, but not until, Shares have been deposited in the designated brokerage account
following exercise of his or her Option. 
 ARTICLE VI. 

TERMINATION OF PARTICIPATION 

6.1 Cessation of Contributions; Voluntary Withdrawal. 

(a) A Participant may cease payroll deductions during an Offering Period and elect to withdraw from the Plan by delivering written notice of
such election to the Company in such form and at such time prior to the Exercise Date for such Offering Period as may be established by the Administrator (a “Withdrawal Election”). A Participant electing to withdraw from the Plan
may elect to either (i) withdraw all of the funds then credited to the Participant’s Plan Account as of the date on which the Withdrawal Election is received by the Company, in which case amounts credited to such Plan Account shall be
returned to the Participant in one (1) lump-sum payment in cash within thirty (30) days after such election is received by the Company, without any interest thereon, and the Participant shall cease to participate in the Plan and the
Participant’s Option for such Offering Period shall terminate; or (ii) subject to Section 6.2 below, exercise the Option for the maximum number of whole Shares on the applicable Exercise Date with any remaining Plan Account balance
returned to the Participant in one (1) lump-sum payment in cash within thirty (30) days after such Exercise Date, without any interest thereon, and after such exercise cease to participate in the Plan. As soon as practicable following the
Company’s receipt of a Withdrawal Election, the Participant’s payroll deduction authorization and his or her Option to purchase Shares under the Plan shall terminate. 

(b) A Participant’s withdrawal from the Plan shall not have any effect upon his or her eligibility to participate in any similar plan
which may hereafter be adopted by the Company or in succeeding Offering Periods which commence after the termination of the Offering Period from which the Participant withdraws. 

  
 9 

 (c) A Participant who ceases contributions to the Plan during any Offering Period shall not be
permitted to resume contributions to the Plan during that Offering Period. 
 6.2 Termination of Eligibility. Upon a
Participant’s ceasing to be an Eligible Employee, for any reason, such Participant’s Option for the applicable Offering Period shall automatically terminate, he or she shall be deemed to have elected to withdraw from the Plan, and such
Participant’s Plan Account shall be paid to such Participant or, in the case of his or her death, to the person or persons entitled thereto pursuant to applicable law, within thirty (30) days after such cessation of being an Eligible
Employee, without any interest thereon. 
 ARTICLE VII. 

GENERAL PROVISIONS 
 7.1
Administration. 
 (a) The Plan shall be administered by the Committee, which (unless otherwise determined by the Board) shall
consist solely of two or more members of the Board, each of whom is intended to qualify as a “non-employee director” as defined by Rule 16b-3 of the Exchange Act and an “independent director” under the rules of any
securities exchange or automated quotation system on which the Shares are listed, quoted or traded, in each case, to the extent required under such provision. The Committee may delegate administrative tasks under the Plan to the services of an Agent
and/or Employees to assist in the administration of the Plan, including establishing and maintaining an individual securities account under the Plan for each Participant. 

(b) It shall be the duty of the Administrator to conduct the general administration of the Plan in accordance with the provisions of the
Plan. The Administrator shall have the power, subject to, and within the limitations of, the express provisions of the Plan: 

(i) To establish and terminate Offering Periods; 

(ii) To determine when and how Options shall be granted and the provisions and terms of each Offering Period (which need not
be identical); 
 (iii) To select Designated Subsidiaries in accordance with Section 7.2 hereof; and 

(iv) To construe and interpret the Plan, the terms of any Offering Period and the terms of the Options and to adopt such rules
for the administration, interpretation, and application of the Plan as are consistent therewith and to interpret, amend or revoke any such rules. The Administrator, in the exercise of this power, may correct any defect, omission or inconsistency in
the Plan, any Offering Period or any Option, in a manner and to the extent it shall deem necessary or expedient to make the Plan fully effect, subject to Section 423 of the Code and the Treasury Regulations thereunder. 

  
 10 

 (c) The Administrator may adopt rules or procedures relating to the operation and administration
of the Plan to accommodate the specific requirements of local laws and procedures. Without limiting the generality of the foregoing, the Administrator is specifically authorized to adopt rules and procedures regarding handling of participation
elections, payroll deductions, payment of interest, conversion of local currency, payroll tax, withholding procedures and handling of stock certificates which vary with local requirements. In its absolute discretion, the Board may at any time and
from time to time exercise any and all rights and duties of the Administrator under the Plan. 
 (d) The Administrator may adopt sub-plans
applicable to particular Designated Subsidiaries or locations, which sub-plans may be designed to be outside the scope of Section 423 of the Code. The rules of such sub-plans may take precedence over other provisions of this Plan, with the
exception of Section 5.1 hereof, but unless otherwise superseded by the terms of such sub-plan, the provisions of this Plan shall govern the operation of such sub-plan. 

(e) All expenses and liabilities incurred by the Administrator in connection with the administration of the Plan shall be borne by the
Company. The Administrator may, with the approval of the Committee, employ attorneys, consultants, accountants, appraisers, brokers or other persons. The Administrator, the Company and its officers and directors shall be entitled to rely upon the
advice, opinions or valuations of any such persons. All actions taken and all interpretations and determinations made by the Administrator in good faith shall be final and binding upon all Participants, the Company and all other interested persons.
No member of the Board or Administrator shall be personally liable for any action, determination or interpretation made in good faith with respect to the Plan or the options, and all members of the Board or Administrator shall be fully protected by
the Company in respect to any such action, determination, or interpretation. 
 7.2 Designation of Subsidiary Corporations. The Board
or Committee shall designate from among the Subsidiaries, as determined from time to time, the Subsidiary or Subsidiaries that shall constitute Designated Subsidiaries. The Board or Committee may designate a Subsidiary, or terminate the designation
of a Subsidiary, without the approval of the stockholders of the Company. 
 7.3 Reports. Individual accounts shall be maintained for
each Participant in the Plan. Statements of Plan Accounts shall be given to Participants at least annually, which statements shall set forth the amounts of payroll deductions, the Option Price, the number of Shares purchased and the remaining cash
balance, if any. 
 7.4 No Right to Employment. Nothing in the Plan shall be construed to give any person (including any Participant)
the right to remain in the employ of the Company, a Parent or a Subsidiary or to affect the right of the Company, any Parent or any Subsidiary to terminate the employment of any person (including any Participant) at any time, with or without cause,
which right is expressly reserved. 

  
 11 

 7.5 Amendment and Termination of the Plan. 

(a) The Board may, in its sole discretion, amend, suspend or terminate the Plan at any time and from time to time; provided,
however, that without approval of the Company’s stockholders given within twelve (12) months before or after action by the Board, the Plan may not be amended to increase the maximum number of Shares subject to the Plan, to change
the designation or class of Eligible Employees or in any other manner that requires the approval of the Company’s stockholders; and provided, further that without approval of the Company’s stockholders, the Plan may not be
amended in any manner that would cause the Plan to no longer be an “employee stock purchase plan” within the meaning of Section 423(b) of the Code. 

(b) In the event the Administrator determines that the ongoing operation of the Plan may result in unfavorable financial accounting
consequences, the Administrator may, to the extent permitted under Section 423 of the Code, in its discretion and, to the extent necessary or desirable, modify or amend the Plan to reduce or eliminate such accounting consequence including, but
not limited to: 
 (i) altering the Option Price for any Offering Period including an Offering Period underway at the time
of the change in Option Price; 
 (ii) shortening any Offering Period so that the Offering Period ends on a new Exercise
Date, including an Offering Period underway at the time of the Administrator action; and 
 (iii) allocating Shares. 

Such modifications or amendments shall not require stockholder approval or the consent of any Participant. 

(c) Upon termination of the Plan, the balance in each Participant’s Plan Account shall be refunded as soon as practicable after such
termination, without any interest thereon. 
 7.6 Use of Funds; No Interest Paid. All funds received by the Company by reason of
purchase of Shares under the Plan shall be included in the general funds of the Company free of any trust or other restriction and may be used for any corporate purpose. No interest shall be paid to any Participant or credited under the Plan. 

7.7 Term; Approval by Stockholders. Subject to approval by the stockholders of the Company in accordance with this Section 7.7,
the Plan shall terminate on the tenth (10th) anniversary of the date of its initial approval by the stockholders of the Company, unless earlier terminated in accordance with Sections 5.3 or 7.5 hereof. No Option may be granted during any
period of suspension of the Plan or after termination of the Plan. The Plan shall be submitted for the approval of the Company’s stockholders within twelve (12) months after the date of the Board’s initial adoption of the Plan.
Options may be granted prior to such stockholder approval; provided, however, that such Options shall not be exercisable prior to the time when the Plan is approved by the stockholders; provided, further that if such
approval has not been obtained by the end of said twelve (12)-month period, all Options previously granted under the Plan shall thereupon terminate and be canceled and become null and void without being exercised. 

  
 12 

 7.8 Effect Upon Other Plans. The adoption of the Plan shall not affect any other
compensation or incentive plans in effect for the Company, any Parent or any Subsidiary. Nothing in the Plan shall be construed to limit the right of the Company, any Parent or any Subsidiary (a) to establish any other forms of incentives or
compensation for Employees of the Company or any Parent or any Subsidiary, or (b) to grant or assume Options otherwise than under the Plan in connection with any proper corporate purpose, including, but not by way of limitation, the grant or
assumption of options in connection with the acquisition, by purchase, lease, merger, consolidation or otherwise, of the business, stock or assets of any corporation, firm or association. 

7.9 Conformity to Securities Laws. Notwithstanding any other provision of the Plan, the Plan and the participation in the Plan by any
individual who is then subject to Section 16 of the Exchange Act shall be subject to any additional limitations set forth in any applicable exemption rule under Section 16 of the Exchange Act (including any amendment to Rule 16b-3 of the Exchange Act) that are requirements for the application of such exemptive rule. To the extent permitted by applicable law, the Plan shall be deemed amended to the extent necessary to conform to such
applicable exemptive rule. 
 7.10 Notice of Disposition of Shares. Each Participant shall give the Company prompt notice of any
disposition or other transfer of any Shares, acquired pursuant to the exercise of an Option, if such disposition or transfer is made (a) within two (2) years after the applicable Grant Date or (b) within one (1) year after the
transfer of such Shares to such Participant upon exercise of such Option. The Company may direct that any certificates evidencing shares acquired pursuant to the Plan refer to such requirement. 

7.11 Tax Withholding. The Company or any Parent or any Subsidiary shall be entitled to require payment in cash or deduction from other
compensation payable to each Participant of any sums required by federal, state or local tax law to be withheld with respect to any purchase of Shares under the Plan or any sale of such shares. 

7.12 Governing Law. The Plan and all rights and obligations thereunder shall be construed and enforced in accordance with the laws of
the State of Delaware. 
 7.13 Notices. All notices or other communications by a Participant to the Company under or in connection
with the Plan shall be deemed to have been duly given when received in the form specified by the Company at the location, or by the person, designated by the Company for the receipt thereof. 

7.14 Conditions To Issuance of Shares. 

(a) Notwithstanding anything herein to the contrary, the Company shall not be required to issue or deliver any certificates or make any book
entries evidencing Shares pursuant to the exercise of an Option by a Participant, unless and until the Board or the Committee has determined, with advice of counsel, that the issuance of such Shares is in compliance with all applicable laws,
regulations of governmental authorities and, if applicable, 

  
 13 

 
the requirements of any securities exchange or automated quotation system on which the Shares are listed or traded, and the Shares are covered by an effective registration statement or applicable
exemption from registration. In addition to the terms and conditions provided herein, the Board or the Committee may require that a Participant make such reasonable covenants, agreements, and representations as the Board or the Committee, in its
discretion, deems advisable in order to comply with any such laws, regulations, or requirements. 
 (b) All certificates for Shares
delivered pursuant to the Plan and all Shares issued pursuant to book entry procedures are subject to any stop-transfer orders and other restrictions as the Committee deems necessary or advisable to comply with federal, state, or foreign securities
or other laws, rules and regulations and the rules of any securities exchange or automated quotation system on which the Shares are listed, quoted, or traded. The Committee may place legends on any certificate or book entry evidencing Shares to
reference restrictions applicable to the Shares. 
 (c) The Committee shall have the right to require any Participant to comply with any
timing or other restrictions with respect to the settlement, distribution or exercise of any Option, including a window-period limitation, as may be imposed in the sole discretion of the Committee. 

(d) Notwithstanding any other provision of the Plan, unless otherwise determined by the Committee or required by any applicable law, rule or
regulation, the Company may, in lieu of delivering to any Participant certificates evidencing Shares issued in connection with any Option, record the issuance of Shares in the books of the Company (or, as applicable, its transfer agent or stock plan
administrator). 
 7.15 Equal Rights and Privileges. Except with respect to sub-plans designed to be outside the scope of
Section 423 of the Code, all Eligible Employees of the Company (or of any Designated Subsidiary) shall have equal rights and privileges under this Plan to the extent required under Section 423 of the Code or the regulations promulgated
thereunder so that this Plan qualifies as an “employee stock purchase plan” within the meaning of Section 423 of the Code or the Treasury Regulations thereunder. Any provision of this Plan that is inconsistent with Section 423 of
the Code or the Treasury Regulations thereunder shall, without further act or amendment by the Company or the Board, be reformed to comply with the equal rights and privileges requirement of Section 423 of the Code or the Treasury Regulations
thereunder. 
 * * * * * * 

  
 14 

 I hereby certify that the foregoing Aimmune Therapeutics, Inc. Employee Stock Purchase Plan was
duly approved by the Board of Directors of Aimmune Therapeutics, Inc. on July 24, 2015. 
 I hereby certify that the foregoing Aimmune
Therapeutics, Inc. Employee Stock Purchase Plan was duly approved by the stockholders of Aimmune Therapeutics, Inc. on            , 2015. 

Executed on this    day of            , 2015. 

 

                       
                                         
                         

  
 15

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