Document:

EX-10.12

 Exhibit 10.12 

 

					
	

	  	 —
  

1551 Eastlake Ave E, Ste 200
 Seattle, WA
98102
	  	  
 206.659.0067

adaptivebiotech.com

 May 1, 2019 
 Charles Sang

 [address] 
 Re:    Executive Severance
Agreement 
 Dear Charles: 
 This letter
agreement (this “Agreement”) confirms the terms of your severance rights in connection with your employment with Adaptive Biotechnologies Corporation, a Washington corporation (the “Company”), and
supplements that certain letter agreement regarding your employment with the Company dated on or about May 1, 2019 (the “Employment Agreement”). Capitalized terms used but not otherwise defined herein shall have the
meanings ascribed to them in the Employment Agreement. 
 1.    Severance 

As further detailed in your Employment Agreement, your employment with the Company is “at will”; it is for no specified term, and
may be terminated by you or the Company at any time, with or without cause or advance notice. 
 If (i) you are terminated by the
Company for a reason other than for Cause (as defined below), death, or your disability or (ii) you resign for Good Reason (as defined below), then, if you execute a full release of claims in the form of the release attached as
Exhibit A (the “Release”) and such Release becomes effective and irrevocable within sixty (60) days of the effective date of such termination, the Company will pay you a lump sum payment equivalent to three
(3) months of your base salary (at the base salary rate then in effect as of your termination date or, if your termination is due to a Good Reason resignation, the greater of the base salary rate then in effect on your termination date or the
date immediately prior to the event constituting Good Reason) (the “Severance Payment”), payable on the first payroll period after the sixty (60)-day anniversary of your termination
date, subject to your continued compliance with the obligations set forth in the Release and the Company’s standard form of nondisclosure and assignment agreement. 

For purposes of this Agreement, “Cause” is defined as: (a) theft or embezzlement by you with respect to the
Company or its affiliates; (b) willful misconduct or gross negligence in performance of your duties, including your refusal to comply in any material respect with the directives of the chief executive officer or the Board so long as such
directives are not inconsistent with any legal obligation or requirement; (c) dishonest or fraudulent conduct, a deliberate attempt to do an injury to the Company, or other intentional conduct that materially discredits the Company or is
materially detrimental to the financial condition or reputation of the Company, including the commission by you of any felony or any crime involving moral turpitude; (d) willful or prolonged absence from work by you (other than by reason of
disability due to physical or mental illness) or failure, gross neglect or refusal by the you to perform your duties and responsibilities; (e) continued and habitual use of alcohol by you to an extent which materially impairs your performance
of your duties without the same being corrected within fifteen (15) days after being give written notice thereof by the Company; (f) your use of illegal drugs without the same being corrected within thirty (30) days after being given
written notice thereof; or (g) your material breach of any element of any agreement between you and the Company, including, without limitation, theft or other misappropriation of the Company’s proprietary information, which breach (if
determined in good faith by the Board to be curable) is not remedied within ten (10) working days after written notice. 
 For purposes
of this Agreement “Good Reason” means, without your written consent, (a) a reduction in your base salary other than in connection with simultaneous reductions in all other senior executives at the vice president

  
 

 

 Executive Severance Agreement 

May 1, 2019 
  Page
 2
 
  

 
level or above of equal or greater amount in percentage terms, or (b) the relocation of your principal work facility to a location that is more than thirty (30) miles from Seattle, it
being understood that significant travel to the Company’s San Francisco offices and occasional travel to other cities for conferences and meetings will be expected; provided, however, that for “Good Reason” to be
established, you must provide written notice to the Company’s general counsel within thirty (30) days immediately following the relevant event described in (a) or (b) above, the Company must fail to remedy such event within thirty
(30) days after receipt of such notice, and your resignation must be effective no later than fourteen (14) days after the expiration of such cure period. 

To the extent that payments and benefits in this Agreement are subject to Section 409A of the Internal Revenue Code of 1986, as amended
(the “Code”), this Agreement is intended to comply with and will be interpreted in a manner intended to comply with Section 409A of the Code. To the extent that any provision in this offer is ambiguous as to its
compliance with Section 409A of the Code, the provision shall be read in such a manner so that no payments due under this Agreement shall be subject to an “additional tax” as defined in Section 409(a)(1)(B) of the Code.
Notwithstanding anything herein to the contrary, if at the time of your separation from service from the Company you designated as a “specified employee” as defined in Section 409A of the Code (and any related regulations or other
pronouncements thereunder) and the deferral of the commencement of any payments or benefits otherwise payable hereunder as a result of such separation from service is necessary in order to prevent any accelerated or additional tax under
Section 409A of the Code, then the Company will defer the commencement of the payment of any such payments or benefits hereunder (without any reduction in such payments or benefits ultimately paid or provided to you) until the expiration of the
six-month period measured from the date of your separation from service with the Company (or the earliest date as is permitted under Section 409A of the Code). On the first day of the seventh month
following the date of your separation from service, or if earlier, the date of your death, all payments delayed pursuant to this paragraph (whether they would have otherwise been paid or reimbursed to you in a single sum or in installments) shall be
paid or reimbursed to you in a single sum and any remaining payments and benefits due to you shall be paid or provided in accordance with the normal dates specified for them in this Agreement or in another agreement between you and the Company. In
addition, if any other payments of money or other benefits due to you hereunder could cause the application of an accelerated or additional tax under Section 409A of the Code as determined jointly by you and the Company, such payments or other
benefits shall be deferred if deferral will make such payment or other benefits compliant under Section 409A of the Code, or otherwise such payment or other benefits shall be restructured, to the extent possible, in a manner, determined by the
Company, that does not cause such an accelerated or additional tax. To the extent any reimbursements or in-kind benefits due to you under this Agreement or otherwise constitute “deferred
compensation” under Section 409A of the Code as determined jointly by you and the Company, any such reimbursements or in-kind benefits shall be paid to you in a manner consistent with Treas. Reg. Section 1.409A-3(i)(1)(iv). Each payment made under this Agreement or otherwise shall be designated as a “separate payment” within the meaning of Section 409A of the Code. References herein to a
termination of your employment shall be deemed to refer to the date upon which you have experienced a “separation from service” within the meaning of Code Section 409A. The Company shall consult with you in good faith regarding the
implementation of the provisions of this paragraph. The preceding provisions, however, shall not be construed as a guarantee by the Company of any particular tax effect to you under this Agreement. 

2.    Arbitration 

In the event of any dispute or claim solely related to or arising out of the termination of your employment with the Company for any reason
(including, but not limited to, any claims for breach of contract, wrongful termination, or age, sex, race, national origin, disability or other discrimination or harassment), you agree that all such disputes will be fully, finally and exclusively
resolved by binding arbitration conducted by Judicial Dispute Resolution, LLC (or a similar entity if acceptable to the Company) in King County, Washington, pursuant to the Federal Arbitration Act. You and the Company hereby waive your respective
rights to have any such disputes or claims tried by a judge or jury. This 

  
 

 

 Executive Severance Agreement 

May 1, 2019 
  Page
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section will not apply to any claims for injunctive relief by the Company or you, any claims by the Company or you arising out of or related to proprietary and intellectual property rights,
claims pursuant to the National Labor Relations Act, claims pursuant to the Washington State Law Against Discrimination, claims under federal discrimination laws, workers compensation claim(s), unemployment compensation benefits claim(s), or any
other claims that, as a matter of law, the parties cannot agree to arbitrate. 
 3.    Additional Terms 

This Agreement, the Employment Agreement, the Nondisclosure and Assignment Agreement, the Existing Awards and the CIC Agreement (as defined
below) constitute the entire agreement between you and the Company regarding the terms and conditions of your employment are the complete and exclusive statement of all of the terms and conditions of your employment with the Company, and supersede
and replace any and all prior agreements or representations with regard to the subject matter hereof, whether written or oral, including that certain employment letter agreement by and between you and the Company dated on or about March 17,
2016, and that certain change of control agreement between you and the Company dated on or about August 7, 2017. However, this Agreement shall not supersede the change in control agreement between you and the Company dated on or about
May 1, 2019 (“CIC Agreement”). 
 This Agreement is entered into without reliance on any promise or
representation other than those expressly contained herein, and (except for changes reserved to the Company’s discretion herein) cannot be modified or amended except in a writing signed by you and a duly authorized Company representative.
Whenever possible, each provision of this Agreement will be interpreted in such manner as to be effective and valid under applicable law, but if any provision of this Agreement is held to be invalid, illegal or unenforceable in any respect under any
applicable law or rule in any jurisdiction, such invalidity, illegality or unenforceability will not affect any other provision or any other jurisdiction, but this Agreement will be reformed, construed and enforced as if such invalid, illegal or
unenforceable provisions had never been contained herein. This Agreement and the terms of your employment with the Company shall be governed in all aspects by the laws of the State of Washington. 

[Signature page follows.] 

  
 

 

 Executive Severance Agreement 

May 1, 2019 
  Page
 4
 
  

 Please sign and date this Agreement on the spaces provided below to acknowledge your
acceptance of the terms of this Agreement. 
  

	
	Sincerely,
	
	/s/ Chad Robins
	Chad Robins
	Chief Executive Officer

 I agree to and accept the terms and conditions set forth in this Agreement. 

 

			
	
	/s/ Charles Sang
	Charles Sang
		
	Date:	 	May 1, 2019

  
 

 

 Exhibit A 

Release 
 [Separately
attached.]EX-10.13

 Exhibit 10.13 

ADAPTIVE BIOTECHNOLOGIES CORPORATION 

INDEMNIFICATION AGREEMENT 

This Indemnification Agreement (the “Agreement”) is entered into on
                , 20    , between Adaptive Biotechnologies Corporation, a Washington corporation (the “Company”), and the
undersigned officer and/or director of the Company (“Indemnitee”), for good and valuable consideration as set forth below. 

RECITALS 

A.    The Company recognizes the importance, and increasing difficulty, of obtaining adequate liability insurance coverage
for its directors, officers, employees, agents and fiduciaries. 
 B.    The Company further recognizes that, at the
same time as the availability and coverage of such insurance has become more limited, litigation against corporate directors, officers, employees, agents and fiduciaries has continued to increase. 

C.    Section 5.4 of Article 5 of the Company’s Amended and Restated Articles of Incorporation (the
“Articles”) provides for indemnification of the Company’s directors and officers to the full extent authorized by the Washington Business Corporation Act (the “Statute”), and that such provisions
are not exclusive and may be supplemented by agreements between the Company and its directors, officers, employees and agents. 

D.    The Company desires to retain and attract the services of highly qualified individuals, such as Indemnitee, to serve
the Company and, in that connection, also desires to provide contractually for indemnification of, and advancement of expenses to, Indemnitee to the full extent authorized by law. 

AGREEMENT 

1.    Indemnification 

a.    Scope. The Company agrees to hold harmless and indemnify Indemnitee against any Damages (as defined in
Section 1(c)) incurred by Indemnitee with respect to any Proceeding (as defined in Section 1(d)) to which Indemnitee is or is threatened to be made a party or in which Indemnitee is otherwise involved (including, but not limited to, as a
witness), to the full extent authorized by law, without regard to the limitations in RCW 23B.08.510 through 23B.08.550, and 23B.08.560(2), except that Indemnitee shall have no right to indemnification on account of: (i) acts or omissions of
Indemnitee that have been finally adjudged (by a court having proper jurisdiction, and after all rights of appeal have been exhausted or lapsed, herein “Finally Adjudged”) to be intentional misconduct or a knowing violation
of law; (ii) conduct of Indemnitee that has been Finally Adjudged to be in violation of RCW 23B.08.310; (iii) any transaction with respect to which it has been Finally Adjudged that Indemnitee personally received a benefit in money,
property or services to which Indemnitee was not legally entitled; or (iv) any suit in which it is Finally Adjudged that Indemnitee is liable for 

  
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an accounting of profits made from the purchase or sale by Indemnitee of securities of the Company in violation of the provisions of Section 16(b) of the Securities Exchange Act of 1934 and
amendments thereto. 
 b.    Changes to Indemnification Right. Indemnitee’s right to be indemnified to the
full extent authorized by law shall include the benefits of any change, after the date of this Agreement, in the Statute or other applicable law regarding the right of a Washington corporation to indemnify directors, officers, employees or agents,
to the extent that it would expand Indemnitee’s rights hereunder. Any such change that would narrow or interfere with Indemnitee’s rights hereunder shall not apply to, limit, or affect the interpretation of, this Agreement, unless and then
only to the extent that it has been Finally Adjudged that its application hereto does not constitute an unconstitutional impairment of Indemnitee’s contract rights or otherwise violate applicable law. 

c.    Indemnified Amounts. If Indemnitee is or is threatened to be made a party to, or is otherwise involved
(including, but not limited to, as a witness) in, any Proceeding, the Company shall hold harmless and indemnify Indemnitee from and against any and all losses, claims, damages, costs, expenses and liabilities incurred in connection with
investigating, defending, being a witness in, participating in or otherwise being involved in (including on appeal), or preparing to defend, be a witness in, participate in or otherwise be involved in (including on appeal), such Proceeding,
including but not limited to attorneys’ fees, judgments, fines, penalties, ERISA excise taxes, amounts paid in settlement, any federal, state, local or foreign taxes imposed on Indemnitee as a result of the actual or deemed receipt of any
payments pursuant to this Agreement, and other expenses (collectively, “Damages”), including all interest, assessments or charges paid or payable in connection with or in respect of such Damages. 

d.    Definition of Proceeding. For purposes of this Agreement, “Proceeding” shall mean any
actual, pending, threatened or completed action, suit, claim, investigation, hearing or proceeding (whether civil, criminal, administrative or investigative, and whether formal or informal) in which Indemnitee is, has been or becomes involved, or
regarding which Indemnitee is threatened to be made a named defendant or respondent, based in whole or in part on or arising out of the fact that Indemnitee is or was a director, officer, member of a board committee, employee or agent of the Company
and/or any of its subsidiaries or that, being or having been such a director, officer, member of a board committee, employee or agent, Indemnitee is or was serving at the request of the Company as a director, officer, partner, employee,
trustee or agent of another corporation or of a foreign or domestic corporation, partnership, joint venture, trust, employee benefit plan or other enterprise (each, a “Related Company”), whether the basis of such action,
suit, claim, investigation, hearing or proceeding is alleged action or omission by Indemnitee in an official capacity as a director, officer, committee member, partner, employee, trustee or agent or in any other capacity while serving as a director,
officer, committee member, partner, employee, trustee or agent. “Proceeding” shall not, however, include any action, suit, claim, investigation, hearing or proceeding instituted by or at the direction of Indemnitee unless pursuant to an
Enforcement Action (as defined in Section 3(a)) or its institution has been authorized by the Company’s Board of Directors (the “Board”). 

  
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 e.    Notifications. 

i.    Promptly after receipt by Indemnitee of notice of the commencement (including a threatened assertion or
commencement) of any Proceeding, Indemnitee will, if it is reasonably foreseeable that a claim in respect thereof will be made against the Company under this Agreement, notify the Board of the commencement thereof (which notice shall be in the form
of attached Exhibit A) (the “Indemnification Notice”). A failure to notify the Company in accordance with this Section 1(e)(i) will not, however, relieve the Company from any liability to Indemnitee under this
Agreement unless (and then only to the extent that) such failure is Finally Adjudged to have materially prejudiced the Company’s ability to defend the Proceeding. 

ii.    At the same time, or from time to time thereafter, Indemnitee may further notify the Board, by delivery of a
supplemental Indemnification Notice (or by checking the second box and providing the corresponding information on the initial Indemnification Notice), of any Proceeding for which indemnification is being sought under this Agreement. 

f.    Determination of Entitlement. 

i.    To the extent Indemnitee has been wholly successful, on the merits or otherwise, in the defense of any Proceeding,
the Company shall indemnify Indemnitee against all expenses incurred by Indemnitee in connection with the Proceeding, within ten (10) days after receipt of an Indemnification Notice delivered pursuant to subsection (e)(ii). 

ii.    In the event that subsection (f)(i) above is inapplicable, or does not apply to the entire Proceeding, the Company
shall indemnify Indemnitee within thirty (30) days after receipt of an Indemnification Notice delivered pursuant to subsection (e)(ii) unless during such thirty (30) day period the Board delivers to Indemnitee a written notice contesting
Indemnitee’s indemnification claim (the “Contest Notice”), which Contest Notice shall state with particularity the reasons for the decision to challenge Indemnitee’s indemnification claim and the evidence the
Company would present in any forum in which Indemnitee might seek review of such decision. The Company’s failure to deliver a Contest Notice within thirty (30) days after the Company’s receipt of an Indemnification Notice pursuant to
subsection (e)(ii) shall obligate the Company unconditionally to indemnify Indemnitee to the extent requested in the Indemnification Notice. 

iii.    At any time following receipt of a Contest Notice, Indemnitee shall be entitled to select a forum for the review
of, and in which the Company will defend, the Contest Notice and the Company’s decision to challenge Indemnitee’s indemnification claim. Such selection shall be made from among the following alternatives, by delivering a written notice to
the Board indicating Indemnitee’s selection of forum: 
 (A)    A quorum of the Board consisting of directors who
are not parties to the Proceeding for which indemnification is being sought; 
 (B)    Special Legal Counsel (as
defined in Section 1(f)(vii)); or 

  
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 (C)    A panel of three independent arbitrators, one of whom is
selected by the Company, another of whom is selected by Indemnitee and the last of whom is selected by the first two arbitrators so selected, provided, that nothing in this Section 1(f) shall prevent Indemnitee at any time from
bringing suit against the Company to recover the amount of the indemnification claim (whether or not Indemnitee has otherwise exhausted its contractual remedies hereunder). In addition, any determination by a forum selected by Indemnitee that
Indemnitee is not entitled to indemnification, or any failure to make the payments requested in the Indemnification Notice, shall be subject to judicial review by any court of competent jurisdiction, as described in Section 3. 

iv.    In any forum in which the Company defends its Contest Notice and its decision to challenge Indemnitee’s
indemnification claim under this Section 1(f), the presumptions, burdens and standard of review set forth in Section 3(c) shall apply and are incorporated into this Section 1(f) by reference, except as otherwise expressly provided in
Section 3(c). 
 v.    As soon as practicable, and in no event later than fifteen (15) days after the forum
has been selected pursuant to subsection (f)(iii) above, the Company shall, at its own expense, submit the defense of its Contest Notice and the question of Indemnitee’s right to indemnification to the selected forum. 

vi.    The forum selected shall render its decision concerning the validity of the Contest Notice and the Company’s
decision to deny Indemnitee’s indemnification claim within thirty (30) days after the forum has been selected in accordance with Section 1(f)(iii). 

vii.    For the purposes of this Agreement, “Special Legal Counsel” shall mean an attorney or
firm of attorneys, selected by Indemnitee and approved by the Company (which approval shall not be unreasonably withheld), who must not have performed other services for the Company or Indemnitee within the last three years. 

2.    Expense Advances 

a.    Generally. The right to indemnification conferred by Section 1 shall include the right to have the
Company pay Indemnitee’s attorneys’ fees and other expenses, including but not limited to out of pocket costs and disbursements, incurred in connection with any Proceeding, or in connection with bringing, defending and/or pursuing an
Enforcement Action (as defined in Section 3(a)), as such expenses are incurred and in advance of the final disposition of such Proceeding or Enforcement Action (such entitlement is referred to hereinafter as an “Expense
Advance”). 
 b.    Undertaking. The Company’s obligation to provide an Expense Advance is
subject only to the following condition: Indemnitee or his or her representative must have executed and delivered to the Board an undertaking (in the form of attached Exhibit B) (the “Statement of Undertaking”) to
repay all Expense Advances if and to the extent that it may be Finally Adjudged that Indemnitee is not entitled to be indemnified for such Expense Advance under one or more of clauses (i) through (iv) of the first sentence of Section 1(a).
The Statement of Undertaking need not be secured and shall be accepted by the Company without reference to Indemnitee’s financial ability to make repayment. No interest shall be charged on any obligation to reimburse the Company for any Expense
Advance. 

  
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 c.    Service as Witness. Notwithstanding any other provision of
this Agreement, the Company’s obligation to indemnify, or provide Expense Advances under Section 2, to Indemnitee in connection with Indemnitee’s appearance as a witness in a Proceeding at a time when Indemnitee has not been made a
named defendant or respondent to the Proceeding shall be absolute and unconditional, and not subject to any of the limitations on, or conditions to, Indemnitee’s right to indemnification or to receive an Expense Advance otherwise contained in
this Agreement. 
 3.    Procedures for Enforcement 

a.    Enforcement. If a claim for indemnification made by Indemnitee hereunder is not paid in full (whether or not
the provisions of Section 1(f) have been complied with, or completed), or a claim for an Expense Advance made by Indemnitee hereunder is not paid in full within twenty (20) days from delivery of a Statement of Undertaking to the Board,
Indemnitee may, but need not, at any time thereafter bring suit against the Company to recover the unpaid amount of the claim (an “Enforcement Action”). 

b.    Required Indemnification. The court hearing the Enforcement Action shall order the Company to provide
indemnification or to advance expenses to Indemnitee to the full extent sought in the Enforcement Action if it determines that (i) the Enforcement Action is brought by Indemnitee to enforce the Company’s obligation under
Section 1(f)(ii) unconditionally to indemnify Indemnitee to the extent requested in the Indemnification Notice where the Company has failed timely to deliver a Contest Notice, or (ii) the Company failed to prove by clear and convincing
evidence that Indemnitee is not entitled to indemnification based on one or more of clauses (i) through (iv) of the first sentence of Section 1(a). 

c.    Presumptions, Burdens and Standard of Review in Enforcement Action or Company Determination. In any
Enforcement Action (and, except as otherwise expressly provided in this Section 3(c), in any review of a Contest Notice by a forum described in Section 1(f)) the following presumptions (and limitations on presumptions), burdens and
standard of review shall apply: 
 i.    The Company shall conclusively be presumed to have entered into this Agreement
and assumed the obligations imposed hereunder in order to induce Indemnitee to serve or to continue to serve as a director, officer, member of a board committee, employee and/or agent of the Company and/or one or more of its subsidiaries; 

ii.    This Agreement shall conclusively be presumed to be valid and Article 5 of the Articles shall conclusively be
presumed to be effective to waive all of the limitations in RCW 23B.08.510 through RCW 23B.08.550, and RCW 23B.08.560(2); 

iii.    Submission of an Indemnification Notice in accordance with Section 1(e)(ii) or a Statement of Undertaking to
the Company shall create a presumption that Indemnitee is entitled to indemnification or an Expense Advance hereunder, and thereafter the Company shall have the burden of proving by clear and convincing evidence (sufficient to rebut the foregoing
presumption) that Indemnitee is not entitled to indemnification based on one or more of clauses (i) through (iv) of the first sentence of Section 1(a); 

  
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 iv.    Indemnitee may establish a conclusive presumption of any
objective fact related to an event or occurrence by delivering to the Company a declaration made under penalty of perjury that such fact is true, provided, that no such presumption may be established with respect to the ultimate conclusions
set forth in any of clauses (i) through (iv) of the first sentence of Section 1(a); 
 v.    If Indemnitee is
or was serving as a director, officer, employee, trustee or agent of a corporation of which a majority of the shares entitled to vote in the election of its directors is held by the Company or in an executive or management capacity in a partnership,
joint venture, trust or other enterprise of which the Company or a wholly-owned subsidiary of the Company is a general partner or has a majority ownership, then such corporation, partnership, joint venture, trust or enterprise shall conclusively be
deemed a Related Company and Indemnitee shall conclusively be deemed to be serving such Related Company at the request of the Company; 

vi.    Neither (i) the failure of the Company (including but not limited to the Board, the Company’s officers,
independent counsel, Special Legal Counsel, any arbitrator or the Company’s shareholders) to make a determination prior to the commencement of the Enforcement Action whether indemnification, or payment of an Expense Advance, of Indemnitee is
proper in the circumstances nor (i) an actual determination by the Company, the Board, the Company’s officers, independent counsel, Special Legal Counsel, any arbitrator or the Company’s shareholders that Indemnitee is not entitled to
indemnification or payment of an Expense Advance shall be a defense to the Enforcement Action, create a presumption that Indemnitee is not entitled to indemnification hereunder or be considered by a court in an Enforcement Action, which shall
conduct a de novo review of the relevant issues; 
 vii.    The termination of any Proceeding by judgment, order,
settlement (whether with or without court approval) or conviction, or upon a plea of nolo contendere, or its equivalent, shall not create a presumption that Indemnitee did not meet any particular standard of conduct or have a particular belief or
that a court has determined that indemnification is not permitted under this Agreement or applicable law; and 

viii.    If the court hearing the Enforcement Action is unable to make either of the determinations specified in Sections
3(b)(i) or 3(b)(ii), the court hearing the Enforcement Action shall nonetheless order the Company to provide indemnification or to advance expenses to Indemnitee to the full extent sought in the Enforcement Action if it determines that Indemnitee is
fairly and reasonably entitled to such indemnification or Expense Advance in view of all of the relevant circumstances, and without regard to the limitations set forth in clauses (i) through (iii) of the first sentence of Section 1(a). In
determining whether Indemnitee is fairly and reasonably entitled to such indemnification or expense advance, the court shall weigh (i) the relative benefits received by the Company and/or any of its subsidiaries or any Related
Company, or any of their affiliates other than Indemnitee, on the one hand, and Indemnitee on the other from the transaction from which such Proceeding arose or to which such Proceeding relates, and (ii) the relative fault of the Company and/or
any of its subsidiaries or any 

  
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Related Company, or any of their affiliates other than Indemnitee, on the one hand, and of Indemnitee on the other in connection with the transaction that resulted in such Damages, as well as any
other relevant equitable considerations. The relative fault of the Company and/or any of its subsidiaries or any Related Company, or any of their affiliates other than Indemnitee, on the one hand, and of Indemnitee on the other shall be determined
by reference to, among other things, the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent the circumstances resulting in such Damages. If either (i) the relative benefits received by the
Company and/or any of its subsidiaries or any Related Company, or any of their affiliates other than Indemnitee, exceed the relative benefits received by Indemnitee, or (ii) the relative fault of the Company and/or any of its subsidiaries or
any Related Company, or any of their affiliates other than Indemnitee, exceeds the relative fault of Indemnitee, then Indemnitee shall be entitled to the full amount of indemnification and/or Expense Advance sought in the Enforcement Proceeding.

 d.    Attorneys’ Fees and Expenses for Enforcement Action. In any Enforcement Action, the Company shall
hold harmless and indemnify Indemnitee against all of Indemnitee’s attorneys’ fees and expenses in bringing, defending and/or pursuing the Enforcement Action (including but not limited to attorneys’ fees at any stage, and on appeal);
provided, however, that the Company shall not be required to provide such indemnification for such fees and expenses if it is Finally Adjudged that Indemnitee knew prior to commencement of the Enforcement Action that Indemnitee was not
entitled to indemnification based on any of clauses (i) through (iv) of the first sentence of Section 1(a). 

4.    Defense of Claim 

With respect to any Proceeding as to which Indemnitee has provided notice to the Company pursuant to Section 1(e)(i): 

a.    The Company may participate therein at its own expense. 

b.    The Company (jointly with any other indemnifying party similarly notified, if any) may assume the defense thereof,
with counsel reasonably satisfactory to Indemnitee. After notice from the Company to Indemnitee of its election to so assume the defense thereof, the Company shall not be liable to Indemnitee under this Agreement for any legal fees or other expenses
(other than reasonable costs of investigation and costs and expenses as participating as a witness) subsequently incurred by Indemnitee in connection with the defense thereof unless (i) the employment of counsel by Indemnitee or the incurring
of such expenses has been authorized by the Company, (ii) Indemnitee shall have concluded that there is a reasonable possibility that a conflict of interest could arise between the Company and Indemnitee in the conduct of the defense of such
Proceeding, which conflict of interest shall be conclusively presumed to exist upon Indemnitee’s delivery to the Company of a written certification of such conclusion, (iii) the Company shall not in fact have employed counsel to assume the
defense of such Proceeding or (iv) the Company does not continue to retain such counsel to defend such Proceeding, in each of which cases the legal fees and other expenses of Indemnitee shall be at the expense of the Company. The Company shall
not be entitled to assume the defense of a Proceeding brought by or on behalf of the Company or as to which Indemnitee shall have reached the conclusion described in clause (ii) above. 

  
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 c.    The Company shall not be liable for any amounts paid in settlement
of any Proceeding effected without its written consent. 
 d.    The Company shall not settle any Proceeding in any
manner that (i) would impose any penalty or limitation on Indemnitee, (ii) constitute any admission of wrongdoing of Indemnitee, or (iii) may compromise or adversely affect the defense of the Indemnitee in any other Proceeding, in
each case without Indemnitee’s written consent. 
 e.    Neither the Company nor Indemnitee will unreasonably
withhold its or his or her consent to any proposed settlement of any Proceeding. 
 5.    Maintenance of D&O
Insurance 
 a.    Subject to Section 5(c) below, during the period (the “Coverage
Period”) beginning on the date of this Agreement and ending at the later of (i) six (6) years following the time Indemnitee is no longer serving as a director, officer, member of a board committee, employee or agent of the Company
and/or one or more subsidiaries or any Related Company, or (ii) at the end of such longer period during which Indemnitee believes that a reasonable possibility of exposure to a Proceeding or Damages persists (which extended period must be
consented to by the Company, such consent not to be unreasonably withheld), the Company shall maintain a directors’ and officers’ liability insurance policy in full force and effect or shall have purchased or otherwise provided for a run-off or tail policy or endorsement to such existing policy (“D&O Insurance”), providing in all respects coverage at least comparable to and in similar amounts, and with similar
exclusions, as that obtained by other similarly situated companies as determined in good faith by any of the parties referenced in Section 1(f)(iii)(a) through (c). 

b.    Under all policies of D&O Insurance, Indemnitee shall during the Coverage Period be named as an insured in such
a manner as to provide Indemnitee the same rights and benefits, subject to the same limitations, as are accorded to the Company’s directors or officers most favorably insured by such policy, and each insurer under a policy of D&O Insurance
shall be required to provide Indemnitee written notice at least thirty (30) days prior to the effective date of termination of the policy. 

c.    Unless otherwise expressly provided in a written agreement between the Company and Indemnitee, the Company shall
have no obligation to obtain or maintain D&O Insurance to the extent that such insurance is not reasonably available, the premium costs for such insurance are disproportionate to the amount of coverage provided, or the coverage provided by such
insurance is so limited by exclusions as to provide an insufficient benefit, such determination to be made by any of the parties referenced in Section 1(f)(iii)(a) through (c). 

d.    It is the intention of the parties in entering into this Agreement that the insurers under the D&O Insurance, if
any, shall be obligated ultimately to pay any claims by Indemnitee which are covered by D&O Insurance, and nothing herein shall be deemed to diminish or otherwise restrict the Company’s or Indemnitee’s right to proceed or collect
against any insurers under D&O Insurance or to give such insurers any rights against the Company or Indemnitee under or with respect to this Agreement, including but not limited to any right to be

  
 8 

 
subrogated to the Company’s or Indemnitee’s rights hereunder, unless otherwise expressly agreed to by the Company and Indemnitee in writing. The obligation of such insurers to the
Company and Indemnitee shall not be deemed reduced or impaired in any respect by virtue of the provisions of this Agreement. 

e.    Subject to Section 7, the Company shall not provide indemnification pursuant to this Agreement for Damages or
Expense Advances that have been paid directly to Indemnitee by an insurance carrier under a policy of D&O Insurance or other insurance maintained by the Company. 

f.    Subject to Section 7, in the event of payment under this Agreement, the Company shall be subrogated to the
extent of such payment to all of the rights of Indemnitee to recover the same amounts from any insurer or other third person (other than another person with indemnification rights against the Company substantially similar those of Indemnitee under
this Agreement). Indemnitee shall execute all documents required and take all acts necessary to secure such rights and enable the Company effectively to bring suit to enforce such rights. 

6.    Partial Indemnification; Mutual Acknowledgment; Contribution 

a.    Partial Indemnification. If Indemnitee is entitled under any provision of this Agreement to indemnification
by the Company for some or a portion of any Damages in connection with a Proceeding, but not for the total amount thereof, the Company shall nevertheless indemnify Indemnitee for the portion of such Damages to which Indemnitee is entitled. 

b.    Mutual Acknowledgment. The Company and Indemnitee acknowledge that, in certain instances, federal law or
public policy may override applicable state law and prohibit the Company from indemnifying Indemnitee under this Agreement or otherwise. For example, the Company and Indemnitee acknowledge that the Securities and Exchange Commission (the
“SEC”) has taken the position that indemnification is not permissible for liabilities arising under certain federal securities laws, and federal legislation prohibits indemnification for certain ERISA violations. Furthermore,
Indemnitee understands that the Company has undertaken or may be required in the future to undertake with the SEC to submit for judicial determination the issue of the Company’s power to indemnify Indemnitee in certain circumstances; all of the
Company’s obligations under this Agreement will be subject to the requirements of any such undertaking required by the SEC to be made by the Company. 

c.    Contribution. If the indemnification provided under Sections 1, 2 and 6 is unavailable by reason of any of
the circumstances specified in one or more of clauses (i) through (iii) of the first sentence of Section 1(a) then, in respect of any Proceeding in which the Company is jointly liable with Indemnitee (or would be if joined in such
Proceeding), the Company shall contribute to the amount of Damages (including attorneys’ fees) actually and reasonably incurred and paid or payable by Indemnitee in such proportion as is appropriate to reflect (i) the relative benefits
received by the Company and/or any of its subsidiaries or any Related Company, or any of their affiliates other than Indemnitee, on the one hand, and Indemnitee on the other from the transaction or events from which such Proceeding arose or to which
such Proceeding relates, and (ii) the relative fault of the Company and/or any of its 

  
 9 

 
subsidiaries or any Related Company, or any of their affiliates other than Indemnitee, on the one hand, and of Indemnitee on the other in connection with the transaction or events that resulted
in such Damages, as well as any other relevant equitable considerations. The relative fault of the Company and/or any of its subsidiaries or any Related Company, or any of their affiliates other than Indemnitee, on the one hand, and of Indemnitee on
the other shall be determined by reference to, among other things, the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent the circumstances resulting in such Damages. The Company agrees that it
would not be just and equitable if contribution pursuant to this Section 6(c) were determined by pro rata allocation or any other method of allocation that does not take account of the foregoing equitable considerations. 

7.    Primacy of Indemnification 

The Company hereby acknowledges that the Indemnitee may have certain rights to indemnification, advancement of expenses or liability insurance
provided by a third-party and certain of its affiliates, other than the Company, any Related Company or the insurer under a D&O Insurance policy of the Company or any Related Company (collectively, the “Entity
Indemnitors”). The Company hereby agrees that the Company shall, and to the extent applicable shall cause each Related Company to, (i) be the indemnitor of first resort, i.e., its obligations to Indemnitee under this Agreement
(including, without limitation, indemnification for Damages and the obligation to make Expense Advances) and any indemnity provisions set forth in its Certificate of Incorporation, By-laws or elsewhere
(collectively, “Indemnity Arrangements”) are primary and (ii) advance the full amount of expenses incurred by the Indemnitee and shall be liable for the full amount of all expenses, judgments, penalties, fines and
amounts paid in settlement by or on behalf of the Indemnitee, to the extent legally permitted and as required by any Indemnity Arrangement, without regard to any rights the Indemnitee may have against the Entity Indemnitors. The Company hereby
irrevocably waives, relinquishes and releases, and shall cause each Related Company to irrevocably waive, relinquish and release, the Entity Indemnitors from any claims against the Entity Indemnitors for contribution, subrogation or any other
recovery of any kind arising out of or relating to any Indemnity Arrangement. The Company further agrees that no advancement or indemnification payment by any Entity Indemnitor on behalf of the Indemnitee shall affect the foregoing. Additionally,
the Entity Indemnitors shall be subrogated to the extent of such advancement or payment to all of the rights of recovery of the Indemnitee against the Company. In the event that any Entity Indemnitor makes a payment to the Indemnitee in respect of
indemnification or advancement of expenses where the Company or a Related Company is the indemnitor of first resort, the Company shall, and to the extent applicable shall cause the Related Companies to, promptly and fully reimburse the Entity
Indemnitor making such payment upon written demand by the Entity Indemnitor . The Company and the Indemnitee agree that the Entity Indemnitors are express third party beneficiaries of the terms of this Section 7, entitled to enforce this
Section 7 as though each such Entity Indemnitor were a party to this Agreement. The Company shall cause each of the Related Companies to perform the terms and obligations of this Section 7 as though each such Related Company was a party to
this Agreement 

  
 10 

 8.    Miscellaneous 

a.    This Agreement shall be interpreted and enforced in accordance with the laws of the State of Washington. 

b.    This Agreement shall be binding upon Indemnitee and upon the Company, its successors and assigns, and shall inure to
the benefit of Indemnitee, Indemnitee’s heirs, personal representatives and assigns and to the benefit of the Company, its successors and assigns. The Company shall require any successor to the Company (whether direct or indirect, by purchase,
merger, consolidation or otherwise) to all or substantially all of the business or assets of the Company, expressly to assume and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform
if no such succession had taken place. 
 c.    Indemnitee’s rights to indemnification and advancement of expenses
under this Agreement shall not be deemed exclusive of any other or additional rights to which Indemnitee may be entitled under the Articles or the Bylaws of the Company, any vote of shareholders or disinterested directors, the Statute or otherwise,
whether as to actions or omissions in Indemnitee’s official capacity or otherwise. 
 d.    Nothing in this
Agreement shall confer upon Indemnitee the right to continue to serve as a director, officer, member of a Board committee, employee and/or agent of the Company or any of its subsidiaries or any Related Company. If Indemnitee is an officer or
employee of the Company, then, unless otherwise expressly provided in a written employment agreement between the Company and Indemnitee, the employment of Indemnitee with the Company shall be terminable at will by either party. The indemnification
and release provided under this Agreement shall apply to any and all Proceedings, notwithstanding that Indemnitee has ceased to be a director, officer, partner, employee, trustee or agent of the Company, any of its subsidiaries or a Related Company,
and shall inure to the benefit of the heirs, executors and administrators of Indemnitee. 
 e.    If any provision or
provisions of this Agreement shall be held to be invalid, illegal or unenforceable for any reason whatsoever, then: (i) the validity, legality and enforceability of the remaining provisions of this Agreement (including, without limitation, all
portions of any paragraphs of this Agreement containing any such invalid, illegal or unenforceable provision that are not themselves invalid, illegal or unenforceable) shall not in any way be affected or impaired thereby; and (ii) to the
fullest extent possible, the provisions of this Agreement (including, without limitation, all portions of any paragraphs of this Agreement containing any such invalid, illegal or unenforceable provision, that are not themselves invalid, illegal or
unenforceable) shall be construed so as to give effect to the intent manifested by the provision held invalid, illegal or unenforceable. 

f.    Any notices or communications to be given or required to be given under this Agreement shall be given by personal
delivery, registered mail, overnight courier, facsimile or electronic mail at the following address or at the address following Indemnitee’s signature below. 

  
 11 

 Company: 

Adaptive Biotechnologies Corporation 

1551 Eastlake Ave. E, #200 

Seattle, WA 98102 

Attn: Legal Department 

Electronic mail: 
 Notices and
communications shall be deemed received by the addressee on the date of delivery if delivered in person, on the third (3rd) day after mailing if delivered by registered airmail, on the next business day after mailing if sent by overnight courier, on
the next business day if sent by telex or facsimile, or upon confirmation of delivery when directed to the electronic mail address described above if sent by electronic mail. 

g.    No amendment, modification, termination or cancellation of this Agreement shall be effective unless in writing
signed by both parties hereto. 
 h.    If Indemnitee has previously executed an indemnification agreement with the
Company, this Agreement supersedes such prior indemnification agreement in its entirety. 
 i.    This Agreement may be
executed in two counterparts, each of which shall be deemed an original, but both of which together shall constitute one and the same instrument. 

[Signature page to follow.] 

  
 12 

 IN WITNESS WHEREOF, the parties have executed and delivered this Agreement effective as of
the day and year first set forth above. 
  

							
	 “Company”
	 		 	 ADAPTIVE BIOTECHNOLOGIES CORPORATION

				
		 		 	By:	 	  

		 		 	Name:	 	Chad Robins
		 		 	Its:	 	Chief Executive Officer
			
	 “Indemnitee”
	 		 	
				
		 		 	Print Name:	 	  

		 		 	Address:	 	  

		 		 		 	  

		 		 	Fax:	 	  

		 		 	Telephone:	 	  

		 		 	Email:	 	  

  
 13 

 EXHIBIT A 

INDEMNIFICATION NOTICE 

Check the appropriate space below, and provide a brief description of the Proceeding as requested below: 

 

	 	☐	 Notice is hereby given by the undersigned,
                                         
                   , pursuant to Section 1(e)(i) of the Indemnification Agreement (the “Agreement”) dated
                    between Adaptive Biotechnologies Corporation, a Washington corporation (the “Company”), and the
undersigned, of the commencement of a Proceeding, as defined in the Agreement. A brief description of the Proceeding is as follows: 

  

	 	☐	 If indemnification of particular Damages (as defined in the Agreement) is being sought at this time, pursuant
to Section 1(e)(ii) of the Agreement, the undersigned hereby requests indemnification by the Company under the terms of the Agreement with respect to the following Damages incurred in connection with the Proceeding: 

Dated:                     ,
            . 
  

	
	
	 
	    [Signature of Indemnitee]

  

	
	
	 
	    [Print name]

 EXHIBIT B 

STATEMENT OF UNDERTAKING 
 STATE
OF                             ) 

      ) ss. 

COUNTY
OF                         ) 

I,
                            , being first duly sworn, do depose and say as follows: 

1.    This Statement is submitted pursuant to the Indemnification Agreement (the “Agreement”) dated
                         between Adaptive Biotechnologies Corporation, a Washington corporation (the
“Company”), and me. 
 2.    I am requesting an Expense Advance, as defined in the Agreement.

 3.    I hereby undertake to repay the Expense Advance if and to the extent it is Finally Adjudged (as defined in the
Agreement) that I am not entitled under the Agreement to be indemnified by the Company. 
 4.    The expenses for which
advancement is requested, and a brief description of the underlying Proceeding (as defined in the Agreement), are as follows: [Add brief description of expenses and Proceeding] 

 

							
	DATED:                     ,
            	 		 		 	  

		 		 		 	[Signature]

 SUBSCRIBED AND SWORN TO before me this         day of
                        . 
  

							
	(Seal or stamp)	 		 		 	  

		 		 		 	Notary Signature
				
		 		 		 	  

		 		 		 	 Print/Type Name
 Notary Public in and for the
State of
Washington,
residing at                                    
                                         
                         

									
		 		 		 	My appointment expires

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