April 26, 2024

Dear Adaptive Biotechnologies Corporation Shareholder:

You are cordially invited to the Adaptive Biotechnologies Corporation 2024 Annual Meeting of Shareholders (the “Annual Meeting”). The attached proxy is solicited on behalf of the board of directors of Adaptive Biotechnologies Corporation for use at the Annual Meeting to be held on Friday, June 7, 2024, at 9:00 a.m., Pacific Time, or at any adjournment or postponement thereof, for the purposes set forth in the accompanying proxy statement, Notice of Annual Meeting of Shareholders (the “Notice”) and form of proxy. The Annual Meeting will be held entirely via the Internet, broadcast from our corporate headquarters at 1165 Eastlake Avenue East, Seattle, Washington 98109.

To be admitted to the Annual Meeting, you must register prior to Wednesday, June 5, 2024, at 2:00 p.m., Pacific Time at www.proxydocs.com/ADPT and enter the control number found on your proxy card, voting instruction form or Notice of Internet Availability of Proxy Materials you previously received. You may attend the meeting, vote your shares and submit questions electronically during the meeting via live webcast by registering at www.proxydocs.com/ADPT. You must also follow subsequent instructions you may receive by electronic mail thereafter. You may vote during the Annual Meeting by following the instructions available on the meeting access email. At the Annual Meeting, you will be asked to elect two Class II directors to our board of directors, to approve, on an advisory basis, the 2023 compensation of our named executive officers and to ratify the appointment of Ernst & Young LLP as our independent registered public accounting firm for the year ending December 31, 2024. The accompanying proxy materials describe these matters.

We have elected to provide access to our proxy materials on the Internet under the Securities and Exchange Commission’s “notice and access” rules. Our proxy materials are available at www.proxydocs.com/ADPT. We are mailing a Notice of Internet Availability of Proxy Materials on or about April 26, 2024, which provides instructions on how to access our proxy materials and our 2023 Annual Report on the Internet. Please read our proxy materials and our 2023 Annual Report carefully before submitting your proxy.

It is important that your shares are represented and voted at the Annual Meeting. You may vote on the Internet or by telephone as instructed in the Notice of Internet Availability of Proxy Materials or, if you are receiving a paper copy of the proxy materials, complete, sign and date the enclosed proxy card and return it in the enclosed envelope as soon as possible.

We thank you for your support and participation.

Sincerely,

Chad Robins

Chairman, Co-Founder and Chief Executive Officer

NOTICE OF 2024 ANNUAL MEETING OF SHAREHOLDERS

TO BE HELD ON JUNE 7, 2024

To the Shareholders of Adaptive Biotechnologies Corporation:

The attached proxy is solicited on behalf of the board of directors of Adaptive Biotechnologies Corporation for use at the Annual Meeting of Shareholders to be held on June 7, 2024, at 9:00 a.m., Pacific Time (the “Annual Meeting”), or at any adjournment or postponement thereof, for the purposes set forth below and in the accompanying proxy statement. The Annual Meeting will be held entirely via the Internet. Shareholders may participate in the Annual Meeting by registering at the following website: www.proxydocs.com/ADPT. You will need the control number included on your Notice of Internet Availability of Proxy Materials, your proxy card or the instructions that accompanied your proxy materials for the following purposes:

We know of no other matters to come before the Annual Meeting. Only shareholders of record of our common stock at the close of business on April 10, 2024 are entitled to notice of and to vote at the Annual Meeting or at any postponements or adjournments thereof. For ten days prior to the meeting, a complete list of the shareholders entitled to vote at the meeting will be available for examination by any shareholder for any purpose germane to the meeting during ordinary business hours at our executive offices located at 1165 Eastlake Avenue East, Seattle, Washington 98109.

YOUR VOTE IS IMPORTANT. PLEASE VOTE YOUR SHARES VIA THE INTERNET, THROUGH OUR TOLL-FREE TELEPHONE NUMBER (866-390-5390) OR BY SIGNING, DATING AND PROMPTLY RETURNING YOUR COMPLETED PROXY CARD. IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE ANNUAL MEETING OF SHAREHOLDERS TO BE HELD ON JUNE 7, 2024: THIS PROXY STATEMENT, THE NOTICE OF ANNUAL MEETING OF SHAREHOLDERS AND THE ANNUAL REPORT ARE AVAILABLE AT WWW.PROXYDOCS.COM/ADPT.

By order of the board of directors,

Stacy Taylor

Senior Vice President, General Counsel and Corporate Secretary

April 26, 2024

Table of Contents

PROXY STATEMENT

INFORMATION CONCERNING VOTING AND SOLICITATION

General

Your proxy is solicited on behalf of the board of directors of Adaptive Biotechnologies Corporation (“Adaptive,” the “Company,” “we,” “us” or “our”), a Washington corporation, for use at our 2024 Annual Meeting of Shareholders (the “Annual Meeting”) to be held on Friday, June 7, 2024, at 9:00 a.m., Pacific Time, or at any continuation, postponement or adjournment thereof, for the purposes discussed in this proxy statement, as well as any business properly brought before the Annual Meeting. Proxies are solicited to give all shareholders of record an opportunity to vote on matters properly presented at the Annual Meeting. The Annual Meeting will be held entirely via the Internet. To be admitted to and participate in the Annual Meeting, you must register prior to Wednesday, June 5, 2024, 2:00 p.m., Pacific Time at www.proxydocs.com/ADPT and enter the control number found on your proxy card, voting instruction form or Notice of Internet Availability of Proxy Materials you previously received. Upon completing your registration, you will receive further instructions via email one hour prior to the start of the Annual Meeting, including your unique link that will allow you access to the Annual Meeting. You will have the ability to submit questions prior to and during the Annual Meeting. Please be sure to follow instructions found on your proxy card and/or Voting Authorization Form and subsequent instructions that will be delivered to you via email.

Technical assistance will be available one hour prior to and during the Annual Meeting. Information related to technical assistance will be provided in the email with the sign-in instructions. We recommend that you log in at least 15 minutes before the Annual Meeting to ensure you are logged in when the Annual Meeting starts. You may vote during the Annual Meeting by following the instructions available on the meeting access email.

We have elected to provide access to our proxy materials over the Internet. Accordingly, on or about April 26, 2024, we are mailing a Notice of Internet Availability of Proxy Materials to most of our shareholders of record and we are mailing paper copies of the proxy materials to certain other shareholders of record. All shareholders will have the ability to access the proxy materials on the website referred to in the notice or request to receive a printed set of the proxy materials. You can find instructions on how to request a printed copy by mail or electronically on the notice and on the website referred to in the notice, including an option to request paper copies on an ongoing basis. On April 26, 2024, we intend to make this proxy statement available on the Internet and to commence mailing of the Notice of Internet Availability of Proxy Materials to all shareholders entitled to vote at the Annual Meeting. We intend to mail this proxy statement, together with a proxy card, to those shareholders entitled to vote at the Annual Meeting who have properly requested paper copies of such materials, within three business days of such request.

Availability of Proxy Materials for the 2024 Annual Meeting

This proxy statement and our 2023 Annual Report are available at www.proxydocs.com/ADPT. This website address contains: the Notice of Annual Meeting of Shareholders, the proxy statement and the 2023 Annual Report. You are encouraged to access and review all of the important information contained in the proxy materials before voting.

Who Can Vote, Outstanding Shares

Record holders of our common stock as of the close of business on April 10, 2024, the record date for the Annual Meeting (the “Record Date”), are entitled to vote at the Annual Meeting on all matters to be voted upon. As of the Record Date, there were 147,368,324 shares of our common stock outstanding. On each matter presented to our shareholders for vote, the holders of common stock are entitled to one vote per share held as of the Record Date.

Voting of Shares

You may vote by attending the Annual Meeting and voting via the Internet, via our toll-free telephone number at 866-390-5390 or by submitting a proxy. The method of voting by proxy differs (1) depending on

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whether you are viewing this proxy statement on the Internet or receiving a paper copy and (2) for shares held as a record holder and shares held in “street name.” If you are a shareholder of record on the Record Date, you can participate in the Annual Meeting online at www.proxydocs.com/ADPT and vote your shares during the Annual Meeting.

Record Holder. If you hold your shares of common stock as a record holder and you are viewing this proxy statement on the Internet, you may vote by submitting a proxy over the Internet by following the instructions on the website referred to in the Notice of Internet Availability of Proxy Materials previously mailed to you. If you hold your shares of common stock as a record holder and you are reviewing a paper copy of this proxy statement, you may vote your shares by completing, dating and signing the proxy card that was included with the proxy statement and promptly returning it in the preaddressed, postage-paid envelope provided to you, or by submitting a proxy over the Internet or by telephone by following the instructions on the proxy card.

Hold in Street Name. If you hold your shares of common stock in street name, which means your shares are held of record by a broker, bank or other nominee, you will receive a notice from your broker, bank or other nominee that includes instructions on how to vote your shares. Your broker, bank or other nominee will allow you to deliver your voting instructions over the Internet and may also permit you to vote by telephone. In addition, you may request paper copies of the proxy statement and proxy card from your broker by following the instructions on the notice provided by your broker.

General. If you vote through these facilities, you should be aware that you may incur costs such as usage charges from telephone companies or Internet service providers and that these costs must be borne by you. If you vote through these facilities, then you need not return a written proxy card by mail. The cost of soliciting proxies will be borne by us. We may reimburse banks and brokers and other persons representing beneficial owners for their reasonable out-of-pocket costs. We may use the services of our officers, directors and others to solicit proxies, personally or by telephone, facsimile or electronic mail, without additional compensation.

YOUR VOTE IS VERY IMPORTANT. You should submit your proxy even if you plan to attend the Annual Meeting via the Internet. If you are a shareholder of record on the Record Date, you can participate in the Annual Meeting online at www.proxydocs.com/ADPT and vote your shares during the Annual Meeting. If you properly give your proxy and submit it to us in time to vote, one of the individuals named as your proxy will vote your shares as you have directed.

All shares entitled to vote and represented by properly submitted proxies (including those submitted electronically, telephonically and in writing), and not revoked or superseded, will be voted at the Annual Meeting in accordance with the instructions indicated on those proxies. If no direction is indicated on a proxy, your shares will be voted as follows:

The proxy gives each of Chad Robins, Kyle Piskel and Stacy Taylor discretionary authority to vote your shares in accordance with their best judgment with respect to all additional matters that might come before the Annual Meeting. If you receive more than one proxy card or Notice of Internet Availability of Proxy Materials, it means you hold shares that are registered in more than one account. To ensure that all of your shares are voted, sign and return each proxy card or, if you submit a proxy by telephone or the Internet, submit one proxy for each proxy card or Notice of Internet Availability of Proxy Materials you receive.

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Revocation of Proxy

If you are a shareholder of record, you may revoke your proxy at any time before your proxy is voted at the Annual Meeting by taking any of the following actions:

Written notices of revocation and other communications with respect to the revocation of Company proxies should be addressed to:

Adaptive Biotechnologies Corporation

1165 Eastlake Avenue East

Seattle, WA 98109

Attention: SVP, General Counsel and Corporate Secretary

If your shares are held in “street name,” you may change your vote by submitting new voting instructions to your broker, bank or other nominee. You must contact your broker, bank or other nominee to find out how to do so. See below regarding how to vote live if your shares are held in street name.

Attendance at the Annual Meeting

We are excited to once again hold a virtual-only meeting. Based on our experience in prior years, this format provides broad shareholder access to our meeting, allowing all shareholders with Internet connectivity to have a consistent experience regardless of location, ability to travel or similar factors, while saving us and our shareholders time and travel expenses, and, importantly, reducing our environmental impact. We have paid special attention to the meeting platform features, which provide shareholders the opportunity to vote, ask questions and otherwise participate in the meeting in a manner similar to—and in some ways superior to— traditional in-person shareholder meetings, and have found it also reduces costs. The format is particularly useful when practical limitations on in-person interaction limit shareholder engagement and participation.

If you are the record holder of your shares, you may attend the meeting by registering at the following website: www.proxydocs.com/ADPT. To participate in the Annual Meeting, you will need the control number included on the Notice of Internet Availability of Proxy Materials, your proxy card or the instructions that accompanied your proxy materials. We refer to attending the meeting through this website as attendance “via Internet,” and it is considered the same as attendance in person for all corporate purposes.

If your shares are held in “street name,” in the name of a broker, trustee or other nominee, you may change your vote by submitting new voting instructions to your broker, trustee or other nominee, or, if you have obtained a legal proxy from your broker or other nominee giving you the right to vote your shares, by attending the meeting and voting via the Internet.

Broker Non-Votes

Brokers or other nominees who hold shares of common stock in “street name” for a beneficial owner of those shares typically have the authority to vote in their discretion on “routine” proposals when they have not received instructions from beneficial owners.

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However, brokers are not allowed to exercise their voting discretion with respect to the election of directors or for the approval of other matters that are considered “non-routine” matters without specific voting instructions from the beneficial owner. These non-voted shares are referred to as “broker non-votes.” If your broker holds your common stock in “street name,” your broker will vote your shares on “non-routine” proposals only if you provide instructions on how to vote by filling out the voter instruction form sent to you by your broker with this proxy statement.

Only Proposal No. 3 (ratifying the appointment of our independent registered public accounting firm) is considered a routine matter. Proposals No. 1 (election of directors) and No. 2 (Say-on-Pay) are not considered routine matters, and without your instruction, your broker cannot vote your shares for those proposals.

Quorum and Votes Required

The inspector of elections appointed for the Annual Meeting will tabulate votes cast by proxy or live via Internet at the Annual Meeting. The inspector of elections will also determine whether a quorum is present. In order to constitute a quorum for the conduct of business at the Annual Meeting, a majority of the votes entitled to be cast must be represented in person (via Internet) or by proxy at the Annual Meeting. Shares that abstain from voting on any proposal, or that are represented by broker non-votes, will be treated as shares that are present and entitled to vote at the Annual Meeting for purposes of determining whether a quorum is present.

Proposal No. 1: Election of Directors. A plurality of the votes cast in the election of directors at the Annual Meeting is required for the election of directors. Accordingly, the two Class II director nominees receiving the highest number of votes will be elected. Abstentions, “withhold” votes and broker non-votes will have no effect on the outcome of the election of directors. Shareholders are not permitted to cumulate votes with respect to the election of directors.

Proposal No. 2: Say-on-Pay Vote. We will consider the advisory approval of the compensation of our named executive officers to have been obtained if the number of votes cast for the proposal at the Annual Meeting exceeds the number of votes against the proposal. Because abstentions and broker non-votes are neither votes for or against the proposal, they will have no effect on the outcome of the vote. This vote is advisory and not binding on us, our board of directors or our compensation and human capital committee.

Proposal No. 3: Ratification of Independent Registered Public Accounting Firm. The number of votes for must exceed the number of votes against in order to ratify the selection of Ernst & Young LLP as our independent registered public accounting firm. Abstentions are considered to be votes not cast on this proposal and thus will have no effect. Brokers generally have discretionary authority to vote on the ratification of our independent registered public accounting firm, thus broker non-votes are not expected to result from the vote on Proposal No. 3.

In their discretion, the proxy holders named in the proxy are authorized to vote on any other matters that may properly come before the Annual Meeting and at any continuation, postponement or adjournment thereof. The board of directors knows of no other items of business that will be presented for consideration at the Annual Meeting other than those described in this proxy statement. In addition, no shareholder proposal or nomination was received on a timely basis, so no such matters may be brought to a vote at the Annual Meeting.

Solicitation of Proxies

Our board of directors is soliciting proxies for the Annual Meeting from our shareholders. We will bear the entire cost of soliciting proxies from our shareholders. In addition to the solicitation of proxies by delivery of the Notice of Internet Availability of Proxy Materials or proxy statement by mail, we will request that brokers, banks and other nominees that hold shares of our common stock, which are beneficially owned by our shareholders, send Notices of Internet Availability of Proxy Materials, proxies and proxy materials to those beneficial owners

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and secure those beneficial owners’ voting instructions. We will reimburse those record holders for their reasonable expenses. We do not intend to hire a proxy solicitor to assist in the solicitation of proxies. We may use several of our regular employees, who will not be specially compensated, to solicit proxies from our shareholders, either personally or by telephone, Internet, facsimile or special delivery letter.

Communicating with our Board of Directors

Shareholders who wish to communicate with our board of directors or specific individual directors may do so by letter sent to our principal executive offices, addressed to the attention of our Corporate Secretary. Our Corporate Secretary reviews all communications and forwards them to the intended recipient(s) consistent with a screening policy, which provides that sales materials, routine items and items unrelated to the duties and responsibilities of the board of directors are not relayed to directors.

Shareholder Recommendations for Director Nominees

In evaluating potential director nominees, our nominating and corporate governance committee will consider director candidates recommended by our shareholders, provided such recommendations are validly made by our shareholders pursuant to Rule 14a-8 under the Securities Exchange Act of 1934 (the “Exchange Act”) and our Bylaws. Shareholders who wish to recommend a candidate to our nominating and corporate governance committee for consideration for nomination should send to us, at our principal executive offices, information regarding the candidate.

Shareholder List

A list of shareholders eligible to vote at the Annual Meeting will be available for inspection, for any purpose germane to the Annual Meeting, at our principal executive offices during regular business hours for a period of no less than ten days prior to the Annual Meeting. Information required to gain access to the list of shareholders eligible will also be provided upon request during the same time period.

Forward-Looking Statements

This proxy statement contains “forward-looking statements” (as defined in the Private Securities Litigation Reform Act of 1995). These statements are based on our current expectations and involve risks and uncertainties, which may cause results to differ materially from those set forth in the statements. The forward-looking statements may include statements regarding actions to be taken by us. We undertake no obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise, except as required by law. Forward-looking statements should be evaluated together with the many uncertainties that affect our business, particularly those mentioned in the risk factors in Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2023, and our periodic reports on Form 10-Q as well as our current reports on Form 8-K.

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2023 COMPANY HIGHLIGHTS

Selected 2023 Corporate Performance Highlights

Summary of Performance

In 2023, we continued to pursue our business around two main areas: clinical assessment of minimal residual disease (“MRD”) in lymphoid malignancies and immune medicine (“IM”)-driven drug discovery and development.

Our revenue in 2023 was $170.3 million compared to $185.3 million in 2022, with the reduction being accounted for in large part by a decline in the amortization of the upfront payment made in 2019 by our cell therapy partner, Genentech, Inc. (“Genentech”), a slowdown in pharma services largely due to broader macroeconomic factors impacting the biopharmaceutical industry and no MRD milestones.

At the same time, our operating expenses were significantly leveraged as a result of continued streamlining of our operations during the year. Operating expenses were $397.3 million during 2023, of which $25.4 million represented non-cash impairment charges, as compared to $385.5 million during 2022. As of December 31, 2023, cash, cash equivalents and marketable securities was $346.4 million. We estimate positive adjusted EBITDA for the MRD business by the end of 2025, and cash flow breakeven by the end of 2026.¹

Selected 2023 Results

MRD Highlights

IM Highlights

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Selected Environmental and Social Responsibility Highlights

Environmental Stewardship

We are committed to operating in an environmentally responsible and efficient manner to minimize adverse impacts on the environment and have submitted materials relating to our environmental, sustainability and social programs to third party Ecovadis for scoring.

For example, as part of our AdaptiGREEN initiative, we have implemented a variety of composting and recycling programs, including recycling of cardboard, Styrofoam, batteries, Keurig Coffee Pods and sustainable disposition of biohazard waste. Our biohazard waste is destroyed by incineration and the energy generated is captured and used to heat homes on the west coast. Our laboratories reduce energy consumption by utilizing a “night set back” function, which reduces the number of air changes per hour and the flow of ventilation in our fume hoods at night.

With respect to our commuter programs, we follow the King County Commuter Trip Reduction program; we actively support commuting via bicycle and we provide all the amenities required – secure bike storage, onsite self-serve maintenance tools and equipment, and full-service shower rooms. Our all-in-one commuter platform, Luum, enables employees to log their daily commute and obtain “Green Credits” when they commute to work by either bicycle or walking. This credit is in the form of a daily stipend that is paid to eligible employees twice a month and can be used for things like bicycle parts and walking shoes. The Luum platform tracks CO2 avoidance for each employee based on the form of commute transportation they choose each day. We also offer free transit cards (ORCA sound transit) to eligible employees that can be used across multiple public transportation systems. Charging stations for electric cars and bikes are also provided in the buildings utilized by employees. In addition, a substantial number of our employees work from home either part-or full-time, which presents the opportunity for a reduced carbon footprint.

We also work with our landlords to support sustainability programs such as those associated with the Green Chemistry Institute, laboratory equipment and electronics recycling. At our headquarters, we operate an urban beekeeping program in association with Alveolé, with rooftop hives to help bolster our commitment to local sustainability. The rooftop of our headquarters also includes gardens maintained by employees in conjunction with our Environmental & Sustainability ERG from which vegetables are sourced for local food insecurity programs.

We also expect our suppliers to operate in an environmentally responsible and efficient manner. Our Supplier Code of Conduct requires suppliers to comply with all applicable environmental regulations; to have systems in place to ensure safe handling, movement, storage, recycling, reuse or management of waste, air emissions and wastewater discharges; and to have systems in place to prevent and mitigate accidental spills and releases of fuels, raw materials, chemicals, intermediates, products and other hazardous materials to the environment.

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Our People

Our employees, internally referred to as “Adapters,” are passionate about immune medicine, empowered by scientific discipline and fueled by our foresight and curiosity about the adaptive immune system. As of December 31, 2023, we had 709 full-time employees of which 132 hold medical or doctoral degrees. None of our employees are subject to a collective bargaining agreement and we have not experienced any work stoppages. We believe relations with our employees are good. For example, we were named the Work Place of the Year by GeekWire in 2023.

Diversity and Inclusion

We pride ourselves on inclusive team building, product design and gender diversity at all levels of management. We are committed to creating and maintaining a culture of belonging.

Compensation and Benefits

We strive to provide compensation and benefits that are competitive to market and create incentives to attract and retain employees. Our compensation package includes market-competitive base pay, performance-based short-term incentives, health care, retirement benefits, paid time off and family leave. In addition, we offer employees the benefit of equity ownership in the Company through restricted stock unit awards. We also provide access to a variety of health and wellness resources.

Employee Development and Training

We prioritize employee development and training and have established programs to support a culture of employee development. Our Adaptive Leadership Council provides senior employees with access to, and a voice in, management decisions.

Product Safety

We are committed to ensuring that our products are manufactured and supplied at high standards of quality. Our manufacturing operations are conducted in compliance with applicable regulatory requirements, Good Clinical Laboratory Practices and our own internal rigorous quality standards. We also require that our suppliers and partners adhere to high standards, and we conduct audits and oversight of our supply chain.

In addition, it is our policy to comply with all applicable drug, medical device, diagnostic, clinical laboratory and research laws and regulations, including Food and Drug Administration registration, notification, and/or approval, marketing and sales, research and manufacturing requirements, such as Good Laboratory Practices, Good Manufacturing Practices and Good Clinical Practices, as applicable. We also comply with Clinical Laboratory Improvement Amendments of 1988 requirements and related regulations for clinical laboratory testing, where applicable.

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CORPORATE GOVERNANCE

Our Board

Our continuing directors and their respective ages (as of April 10, 2024) and class designations are as follows:

Our Criteria for Board Nomination and Service

Our criteria for board membership include specific measures for determining whether a director will be able to devote sufficient time and effort to the role, including consideration of the potential impact of service on other public company boards. This determination is made at the time of nomination and as appropriate during a director’s service on our board if their circumstances change, recognizing that the ability to fully engage in multiple activities will vary depending on the director and the activities.

In that respect, our criteria relating to devotion of time and effort to the Company board include:

In addition, our Bylaws currently address the question of what levels of service on other companies’ boards will be considered permissible for our board directors as follows:

In addition, the nominating and corporate governance committee considers individual qualifications, including relevant career experience, strength of character, maturity of judgment and familiarity with our business and industry, as well as all other factors it considers appropriate for all board nominations, whether made by shareholders or others.

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The following skills and experiences were considered by the nominating and corporate governance committee in nominating our non-employee directors:

All board members have global expansion and distribution experience, as well as high level strategic corporate development knowledge.

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While we do not have a formal policy on diversity for members of the board of directors, the nominating and corporate governance committee values and, as reasonable, acts on the need for diversity of director demographics, skills and viewpoints when considering new candidates. The diversity characteristics of our directors are below. None identify as LGBTQ+ or as an underrepresented minority; however, future candidates which do so identify and meet our criteria for board service will be considered, as appropriate.

Family Relationships

Chad Robins, our Chief Executive Officer and Chairman of our board of directors, is the brother of Dr. Harlan Robins, our Chief Scientific Officer. There are no other family relationships among any of our directors or executive officers.

Board Leadership Structure

Our board of directors has concluded that our current board leadership structure is appropriate for Adaptive’s needs at this time. Our board of directors continues to believe that the combined role of chairperson and chief executive officer promotes united leadership and direction and provides management a clear focus to execute our strategy and business plans. As Chief Executive Officer, Mr. Robins is best suited to ensure that critical business issues are brought before our board of directors, which enhances our board of directors’ ability to develop and implement business strategies.

In his role as lead independent director, Mr. Neupert presides over the independent director sessions of our board of directors in which Mr. Robins, as our Chief Executive Officer, does not participate and serves as a liaison to management on behalf of the non-employee members of our board of directors. Mr. Neupert has been on our board of directors since December 2013, is an independent director who serves on our compensation and human capital committee, audit committee and our nominating and corporate governance committee, has been an executive officer of public companies, and has meaningful experience as an independent director for other public companies. Accordingly, we believe Mr. Neupert provides a strong voice for our independent directors.

All directors are encouraged to suggest the inclusion of agenda items and meeting materials, and any director is free to raise at any board meeting items that are not on the agenda for that meeting.

Our non-employee directors regularly meet in executive sessions without the presence of any members of management. The lead independent director presides at these meetings and provides the guidance and feedback of our non-employee directors to our Chairman and management team.

Our board of directors, as a whole, has responsibility for risk oversight, and each committee of our board of directors oversees and reviews risk in areas that are relevant to it, including: (1) for the compensation and human capital committee, risks associated with our compensation arrangements and policies (including, as relevant, matters pertaining to our environmental and social policies and practices); (2) for the nominating and corporate governance committee, periodic review and update of our code of conduct and ethics as well as corporate governance-specific policies; and (3) for the audit committee, internal controls and regulatory risks related to accounting and finance, as well as periodic review of cybersecurity and privacy risks. The risk oversight responsibility of our board of directors and its committees is supported by our management reporting processes, which are designed to provide visibility to our board of directors and to our personnel who are responsible for risk assessment information about the identification, assessment and management of critical risks.

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Size of Board

Our board of directors consists of six members. Our directors hold office until their successors have been elected and qualified or until the earlier of their resignation or removal. Our Articles of Incorporation and Bylaws provide that our directors may only be removed for cause and then only by the holders of the shares entitled to elect the director or directors whose removal is sought if, with respect to a particular director, the number of votes cast in favor of removing such director (or the entire board of directors) exceeds the number of votes cast against removal, and that any vacancy on our board of directors, including a vacancy resulting from an enlargement of our board of directors, may be filled only by the affirmative vote of a majority of our directors then in office.

Staggered Board and Shareholder Proposals

In accordance with the terms of our Articles of Incorporation and Bylaws, our board of directors is divided into three staggered classes of directors and each director is assigned to one of the three classes. We continue to believe that this board structure is the best choice for Adaptive at this time.

At each annual meeting of the shareholders, a class of directors will be elected for a three-year term to succeed the directors of the same class whose terms are then expiring. The terms of the directors will expire upon the election and qualification of successor directors at the annual meeting of shareholders to be held during the years 2024 for Class II directors, 2025 for Class III directors and 2026 for Class I directors.

Our Articles of Incorporation and Bylaws provide that the number of directors shall be fixed from time to time by a resolution of the majority of our board of directors.

Shareholder proposals may be tendered in the first quarter; however, the division of our board of directors into three classes with staggered three-year terms may delay or prevent shareholder efforts to effect an immediate change of our management or a change in control.

While we have no formal policy with respect to shareholder nominees, the committee will consider recommendations validly made by our shareholders pursuant to Rule 14a-8 under the Exchange Act and our Bylaws.

Board Governance Guidelines

Our board of directors has adopted corporate governance guidelines covering, among other things, the duties and responsibilities of and independence standards applicable to our directors and board committee structures and responsibilities. These guidelines are available on the “Governance” section of our website at https://investors.adaptivebiotech.com/governance/governance-documents.

Our corporate governance guidelines provide our board of directors with flexibility to combine or separate the positions of chairperson of our board of directors and chief executive officer and to appoint a lead independent director in accordance with its determination that using one or the other structure would be in our best interests. Chad Robins is the current chairman of our board of directors and Peter Neupert currently serves as the lead independent director of our board of directors.

Attendance by Members of the Board at Meetings

Our board of directors held eight meetings and acted by unanimous written consent four times during the year ended December 31, 2023. During 2023, all then incumbent directors attended all but one of the combined total of (1) all board meetings and (2) all meetings of committees of our board of which the incumbent director was a member. Currently, we do not maintain a formal policy regarding director attendance at the Annual Meeting; however, it is expected that, absent compelling circumstances, each of our directors will attend our Annual Meeting via the Internet. All directors attended the virtual annual meeting in 2023.

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Executive Sessions

Our non-employee directors meet regularly in executive sessions without management to consider such matters as they deem appropriate. Our lead independent director, Mr. Neupert, presides over all executive sessions.

Committees of our Board of Directors

Our board of directors has established an audit committee, a compensation and human capital committee and a nominating and corporate governance committee, each of which operates pursuant to a written charter adopted by our board of directors. Our board of directors may also establish other committees from time to time to assist the board of directors. The composition and functioning of all of our committees comply with all applicable requirements of the Sarbanes-Oxley Act, Nasdaq and Securities and Exchange Commission (“SEC”) rules and regulations, subject to applicable phase-in periods for committees. Each committee has a charter, which is available on our website at www.adaptivebiotech.com.

Independence and Current Committee Positions

Our board of directors has determined that all members of our board of directors, except Chad Robins, are independent directors for purposes of the rules of Nasdaq and the SEC. In making this determination, our board of directors considered the relationships that each non-employee director has with us and all other facts and circumstances that our board of directors deemed relevant, including the beneficial ownership of our common stock by each non-employee director. The composition and functioning of our board of directors and each of our committees complies with all applicable requirements of Nasdaq and the rules and regulations of the SEC.

The composition of our board committees and independence of their members are summarized below:

Audit Committee Service and Responsibilities

During the first half of 2023, Michelle Griffin, Michael Pellini, MD and former director Leslie Trigg served on the audit committee, which is currently chaired by Ms. Griffin. Peter Neupert replaced Ms. Trigg on the committee after her resignation from our board in June 2023. The audit committee met five times during 2023. Our board of directors has determined that each member of the audit committee during 2023 was and is “independent” as that term is defined in Nasdaq rules and has sufficient knowledge in financial and auditing matters to serve on the audit committee. In addition, our board of directors has determined that Ms. Griffin, Dr. Pellini, and Mr. Neupert each meet (and, during her service, Ms. Trigg met) the heightened independence requirements for audit committee members required under Section 10A of the Exchange Act and related SEC and Nasdaq rules.

Our board of directors has determined that each member of the audit committee is an “audit committee financial expert,” as defined in Item 407(d)(5)(ii) of Regulation S-K. The audit committee’s responsibilities include:

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In addition, the audit committee periodically reviews our insider trading policy, which prohibits short sales, pledging, hedging or other monetization transactions, and other transactions which would, if consummated, allow insiders to continue to own our securities without the full risks and rewards of ownership.

Compensation and Human Capital Committee Service and Responsibilities

Until September 2023, Robert Hershberg, PhD, MD, Peter Neupert and former director Kevin Conroy served on the compensation and human capital committee, chaired by Dr. Hershberg. Katey Owen replaced Mr. Conroy on the committee after his resignation from our board in September 2023. The committee met four times during 2023. Our board of directors has determined that each member of the compensation and human capital committee during 2023 was and is “independent” as that term is defined in Nasdaq rules and is a “non-employee director” under Rule 16b-3 under the Exchange Act. In addition, our board of directors has determined that Dr. Hershberg, Mr. Neupert and Ms. Owen each meet (and, during his service, Mr. Conroy met) the heightened independence requirements for compensation and human capital committee purposes under Section 10C of the Exchange Act and related SEC and Nasdaq rules. The compensation and human capital committee’s responsibilities include:

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Nominating and Corporate Governance Committee Service and Responsibilities

Michael Pellini, MD, and Peter Neupert serve on the nominating and corporate governance committee, chaired by Mr. Neupert. Mr. Conroy also served on the committee until his departure from our board in September 2023. The nominating and corporate governance committee met once during 2023. Our board of directors has determined that each of Dr. Pellini and Mr. Neupert is (and, during his service, Mr. Conroy was) “independent” as defined in Nasdaq rules. The nominating and corporate governance committee’s responsibilities include:

The nominating and corporate governance committee will consider director candidates recommended by shareholders on the same basis that it evaluates other nominees for director. Shareholders who wish to recommend a candidate to our nominating and corporate governance committee for consideration for nomination should send to us, at our principal executive offices, information regarding the candidate. In order to identify potential director candidates, the committee may utilize its or our existing networks or retain a third-party recruiting firm.

Compensation and Human Capital Committee Interlocks and Insider Participation

At times as noted above, Kevin Conroy, Robert Hershberg, PhD, MD, Peter Neupert, and Katey Owen served as members of our compensation and human capital committee during 2023. During 2023, none of the members of our compensation and human capital committee were officers or employees or had a relationship requiring disclosure under “Relationships and Related Party Transactions.” None of our executive officers currently serves, nor in the past year has served, as a member of the board of directors or compensation and human capital committee of any entity that has one or more executive officers serving on our board of directors or compensation and human capital committee.

CODE OF CONDUCT

We have adopted a written code of business conduct and ethics that applies to our directors, officers and employees, including our principal executive officer, principal financial officer, principal accounting officer or controller or persons performing similar functions. The code is updated periodically; a current copy is posted on our website at www.adaptivebiotech.com. While we make ministerial and technical amendments to the code of conduct and ethics from time to time, if we make any substantive amendments to, or grant any waivers from, the code for any officer or director, we will disclose the nature of such amendment or waiver on our website or in a current report on Form 8-K.

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DIRECTOR COMPENSATION

The following table presents the total compensation for each person who served as a non-employee member of our board of directors at any time during the year ended December 31, 2023. Other than as set forth in the table and described more fully below, we did not pay any compensation, make any additional equity awards or non-equity awards to or pay any other compensation to any of the non-employee members of our board of directors in 2023. We reimburse non-employee members of our board of directors for reasonable travel and out-of-pocket expenses incurred in attending meetings of our board of directors and committees of our board of directors. We also do not, and do not expect to, provide separate compensation to our directors who are also our employees, such as Chad Robins, our Chief Executive Officer. Mr. Robins’ compensation as our principal executive officer in 2023 is reported in the “Executive Compensation” section of this proxy statement.

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Our board of directors has adopted a non-employee director compensation policy that is designed to enable us to attract and retain, on a long-term basis, highly qualified non-employee directors. Specifically, we provided $60,000 annual cash retainer payments payable quarterly in arrears, to each director who is not an employee of ours, with additional amounts for those serving as Lead Independent Director and chairpersons of our audit, compensation, and nominating and corporate governance committees, as set forth below:

In addition, subject to board discretion, each non-employee director initially elected or appointed to our board of directors will receive a grant with a total target economic value equivalent to $400,000, comprised 50% of stock options and 50% of RSUs. With respect to the stock option grant, 25% of the shares vest on the first anniversary of the vesting commencement date and 1/48th of the shares vest in monthly installments thereafter, subject to continuous service through each applicable vesting date. With respect to the RSU grant, 25% of the shares vest on each of the first four anniversaries of the vesting commencement date, subject to continuous service through each applicable vesting date.

Our non-employee director compensation policy sets the total target economic value of the annual director equity grants, comprised 50% of stock options and 50% of RSUs, at $250,000. With respect to the stock option grant, 1/12th of the shares vest on each of the first twelve months following the vesting commencement date, subject to continuous service through each applicable vesting date. With respect to the RSU grant, 100% of the shares vest on the first anniversary of the vesting commencement date, subject to continuous service through each applicable vesting date.

The aggregate amount of compensation under our 2019 Equity Incentive Plan (the “2019 Plan”), including both the grant date fair value of equity compensation and cash compensation, paid to any non-employee director in a calendar year will not exceed $750,000 for the first year of service and $600,000 for each year of service thereafter.

PROPOSAL 1: ELECTION OF DIRECTORS

Pursuant to our Articles of Incorporation and our Bylaws, the total number of directors constituting the board of directors is fixed from time to time by the board. The current authorized number of directors is fixed at six. The board of directors is divided into three classes, each containing as nearly as possible an equal number of directors. The current term of office of our Class II directors expires at the Annual Meeting, while the term for our Class III directors will expire at our 2025 annual meeting of shareholders and the term for our Class I directors expires at our 2026 annual meeting of shareholders.

Based upon the recommendation of our nominating and corporate governance committee, the board has nominated Peter Neupert and Michelle Griffin, both current Class II directors, for election at the Annual Meeting. Each director elected at the Annual Meeting will serve a three-year term expiring at our 2027 annual meeting of shareholders and until his or her successor is duly elected and qualified as a Class II director, or until his or her earlier death, resignation or removal. At the Annual Meeting, proxies cannot be voted for a greater number of individuals than the two nominees named in this proxy statement.

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The board of directors and the nominating and governance committee believe the skills, qualities, attributes and experience of our directors provide us with business acumen and a diverse range of perspectives to engage each other and management to effectively address our evolving needs and represent the best interests of our shareholders.

If any nominee should become unavailable for election prior to the Annual Meeting, an event that currently is not anticipated, the proxies will be voted in favor of the election of a substitute nominee or nominees proposed by the board of directors or the number of directors may be reduced accordingly. Each nominee has agreed to serve if elected and the board of directors has no reason to believe that any nominee will be unable to serve.

We confirm as well that vacancies on the board, including any vacancy created by an increase in the size of the board, may be filled only by a majority of the directors remaining in office, even though less than a quorum of the board, or a sole remaining director. A director elected by the board to fill a vacancy will serve until the next election of the class of directors for which such director was chosen and until such director’s successor is elected and qualified, or until such director’s earlier retirement, resignation, disqualification, removal or death.

Class II Director Nominees Biographies

Set forth below is biographical information for each nominee and a summary of the specific qualifications, attributes, skills and experiences which led our board of directors to conclude that each nominee should serve on the board of directors at this time.

Peter Neupert has served as a member of our board of directors since December 2013. Mr. Neupert served as an Operating Partner at Health Evolution Partners, a private equity fund, from February 2012 to July 2014. Prior to joining Health Evolution Partners, Mr. Neupert served as Corporate Vice President, Health Solutions Group at Microsoft from August 2005 to January 2012, and as the Chief Executive Officer and Chairman of the board of directors of Drugstore.com, which he joined in July 1998. Mr. Neupert currently serves on the board of directors of Laboratory Corporation of America Holdings, a public clinical laboratory company, and Fortrea, a clinical research organization. He has previously served as a member of the board of directors of several private companies. Mr. Neupert served as a member of the Board of Trustees of Fred Hutchinson Cancer Research Center from June 2007 to June 2020. Mr. Neupert holds an MBA from the Tuck School of Business at Dartmouth College and a BA in Philosophy from Colorado College. We believe Mr. Neupert is qualified to serve on our board of directors based on his extensive experience in leadership roles in the health services sector and as a member of the board of directors of several organizations in the biotechnology industry.

Michelle Griffin has served on our board of directors since March 2019. Ms. Griffin previously served on the boards of directors of Acer Therapeutics, Inc., formerly a public pharmaceutical company, (including as chair of the compensation and human capital committee), HTG Molecular Diagnostics, Inc., formerly a public commercial-stage life sciences company, Chinook Therapeutics, formerly a public clinical-stage biotechnology company, (including as chair of the audit committee), PhaseRx, Inc., formerly a public life sciences company, OncoGenex Pharmaceuticals Inc. (now Achieve Life Sciences, Inc.) and Sonus Pharmaceuticals, Inc. (now Achieve Life Sciences, Inc.). Ms. Griffin also served as Executive Vice President, Operations, and Chief Financial Officer at OncoGenex Pharmaceuticals, Inc. from January 2011 to April 2013, served as Acting Chief Executive, Senior Vice President and Chief Operating Officer at Trubion Pharmaceuticals, Inc. from November 2009 until its acquisition in October 2010 and as its Chief Financial Officer from January 2006 to November 2009; served as Senior Vice President and Chief Financial Officer of Dendreon Corp. from August 2005 to January 2006, and served as Chief Financial Officer of Corixa Corp from October 1997 until its acquisition in August 2005. Ms. Griffin holds a BS in marketing from George Mason University and an MBA from Seattle University. We believe Ms. Griffin is qualified to serve as a member of our board of directors based on our review of her extensive operational experience in the biotechnology industry and deep experience in public company financial matters.

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Board Recommendation

THE BOARD RECOMMENDS A VOTE “FOR” EACH OF THE TWO NAMED CLASS II DIRECTOR NOMINEES.

Additional Biographical Information about Other Directors Not Standing for Election at this Meeting

Class III Directors with Terms Expiring at the 2025 Annual Meeting Biographies

Chad Robins co-founded our company in September 2009 and has served as our Chief Executive Officer and a member of our board of directors since incorporation. Mr. Robins currently serves on the board of directors of CM Life Sciences III, Inc., a public special purpose acquisition company sponsored by affiliates of Casdin Capital, LLC and Corvex Management LP. Mr. Robins served on the board of directors of ARYA Sciences Acquisition Corp II, a public special purpose acquisition company, from June 2020 to October 2020. Prior to co-founding our company, Mr. Robins held numerous executive-level positions in medical technology, investment and real estate companies. Mr. Robins holds an MBA from The Wharton School at the University of Pennsylvania and a BS in Managerial Economics from Cornell University. We believe Mr. Robins is qualified to serve as a member of our board of directors based on our review of his experience, qualifications, attributes and skills, including co-founding our company and his executive leadership experience in the biotechnology industry.

Michael Pellini, MD, has served on our board of directors since February 2018. Dr. Pellini currently serves as a General Partner of Section 32, LLC, a technology and life sciences-based venture capital fund. Dr. Pellini currently serves as a member of the board of directors of the American Cancer Society (a nonprofit organization) and Singular Genomics Systems, Inc. (a public development-stage life sciences company), as well as several private companies. Dr. Pellini previously served as Chairman of the board of directors, Chief Executive Officer and President at Foundation Medicine, Inc., a molecular information company, which was acquired by the Roche Group in 2018. Dr. Pellini holds an MD from Jefferson Medical College, an MBA from Drexel University and a BA in Economics from Boston College. We believe Dr. Pellini is qualified to serve on our board of directors because of his medical and clinical experience in the biotechnology industry.

Class I Directors with Terms Expiring at the 2026 Annual Meeting Biographies

Katey Owen, PhD, has served as a member of our board of directors since March 2021. Dr. Owen joined the Bill and Melinda Gates Foundation, a private foundation with the goal to enhance healthcare and reduce extreme poverty, in 2013 as Deputy Director of Vaccine Development. In 2017, she stepped into the role of Director, Neglected Tropical Diseases. In this role, Dr. Owen holds end-to-end responsibilities for a portfolio of investments with the goal to eliminate tropical diseases from the planet. In addition, Dr. Owen assumed the position of Director, Vaccine Development in November 2022, with responsibility for target selection, development and commercialization focusing on 100+ vaccine candidates. Prior to joining the Gates Foundation, Dr. Owen held roles of increasing responsibility at Merck & Co., including Executive Director, Merck Vaccines, Sr. Director, Merck Manufacturing Division, and Director, Merck Research Laboratories. Dr. Owen holds a PhD in Molecular Virology and a BS in Genetic Biology from Purdue University. We believe Dr. Owen is qualified to serve on our board of directors based on her extensive scientific expertise and strategic insights into commercialization and manufacturing at scale.

Robert Hershberg, PhD, MD, has served on our board of directors since February 2013. Dr. Hershberg is currently Chairman and CEO of Hillevax, a position he has held since 2020 and has been a Venture Partner at Frazier Healthcare Partners since March 2020. Formerly, from April 2017 to March 2020, Dr. Hershberg was the executive vice president and head of business development and global alliances at Celgene (acquired by Bristol-Myers Squibb in November 2019). He was employed in positions of ascending responsibility at Celgene since joining the company in 2014, including his role as Chief Scientific Officer from January 2016 to March 2020. Dr. Hershberg previously served in several roles at VentiRx Pharmaceuticals, Inc., a clinical stage biopharmaceutical company, which he co-founded in 2006, and was Chief Executive Officer of VentiRx from

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2012 until the company’s acquisition by Celgene in February 2017. Dr. Hershberg currently serves on the board of directors of Fate Therapeutics, Inc., a public company specializing in cellular immunotherapies, on the board of directors of Recursion Pharmaceuticals, Inc., a public company specializing in drug discovery, and as a clinical faculty member at the University of Washington School of Medicine. Dr. Hershberg holds a PhD in Biology from the University of California, San Diego’s Affiliated PhD Program with the Salk Institute for Biological Studies and an MD and a BA from the University of California, Los Angeles. We believe Dr. Hershberg is qualified to serve on our board of directors based on his extensive technical expertise and executive leadership in the biotechnology industry.

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EXECUTIVE OFFICERS

The following table sets forth certain information about our executive officers:

The following is a biographical summary of the experience of our executive officers, with the exception of Mr. Robins, whose biographical summary is set forth under the caption “Additional Biographical Information about Other Directors Not Standing for Election at this Meeting.”

Tycho Peterson served as our Chief Financial Officer from June 2022 to April 2024. Prior to joining us, Mr. Peterson held roles of increasing responsibility at J.P. Morgan Chase & Co, an investment bank, from May 1999 to June 2022, most recently serving as a Managing Director, Global Equities. Mr. Peterson currently serves on the board of directors of SomaLogic, Inc., a public clinical diagnostics company. Mr. Peterson holds an MBA and a master’s degree in biology from the University of Oxford, and a BS in biology from Cornell University.

Kyle Piskel succeeded Tycho Peterson as our Chief Financial Officer as of April 8, 2024. He joined us in September 2015 and has served in various roles of increasing levels of responsibility, including as Interim Chief Financial Officer from February 2022 to June 2022 and Principal Accounting Officer since October 2021. Prior to joining us, Mr. Piskel was an Accounting Manager at Expedia Group from October 2014 to August 2015. Prior to joining Expedia Group, Mr. Piskel was in the Assurance services practice at Ernst and Young, LLP from August 2007 to October 2014. Mr. Piskel is a certified public accountant and holds a BA in Business Administration from Eastern Washington University and a Master of Accountancy from Gonzaga University.

Sharon Benzeno, PhD, has served as our Chief Commercial Officer, Immune Medicine since April 2022. Before this, she served as Chief Business Development Officer from April 2020 to April 2022, Senior Vice President, Drug Discovery from February 2018 to April 2020 and in business development roles of ascending responsibility from September 2014 to February 2018. Prior to joining us, Dr. Benzeno served as Senior Director at Elsevier Inc., a healthcare informatics company, from December 2013 to September 2014, as Senior Manager in the oncology business unit at Capgemini SE, a French consulting and technology services company, from May 2011 to December 2013, and as Oncology Alliance Manager and Senior Scientific Manager at AstraZeneca plc from September 2005 to May 2011. Dr. Benzeno holds a PhD in Biomedical Sciences from New York University School of Medicine, an MBA in Finance and Leadership from New York University Stern School of Business and a BA in Biochemistry from New York University. Dr. Benzeno completed a postdoctoral fellowship in cancer biology at the University of Pennsylvania Abramson Cancer Center.

Susan Bobulsky has served as our Chief Commercial Officer, MRD, since January 2024. Before this, she served in commercial and strategic planning roles of ascending responsibility since joining Adaptive in September 2014. Prior to joining Adaptive, Ms. Bobulsky was an Associate Principal with ZS Associates, a healthcare management consulting firm, where she worked for nine years specializing in commercialization

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strategy and execution for therapeutic and diagnostic products. Ms. Bobulsky holds an MBA from the Stanford Graduate School of Business and a BS in Science, Technology and Society from Stanford University.

Francis Lo has served as our Chief People Officer since May 2019. Prior to joining us, from March 2017 to April 2019, Mr. Lo served as Vice President, Human Resources at Whole Foods Market, Inc., an operator of natural and organic food supermarkets. From August 2011 to March 2017, Mr. Lo also served in various roles of ascending responsibility with Starbucks Corporation, a public specialty coffee company, including as Director, Global Talent Management from October 2015 to March 2017. Mr. Lo holds an MBA in Business Administration from Stanford University Graduate School of Business and a BA in the Plan II Honors Program (Interdisciplinary Studies with Business Focus) from the University of Texas at Austin.

Harlan Robins, PhD, co-founded our company in September 2009 and has served as either our Chief Scientific Officer or our Head of Innovation since incorporation. Dr. Robins has served in various roles in the Computational Biology Program at Fred Hutchinson Cancer Research Center, including as an Assistant Faculty Member from 2006 to 2011, as an Associate from 2011 to April 2016 and as a Full Member and the Head of the program from April 2016 to June 2019. Dr. Robins currently serves on the board of directors of CM Life Sciences III, Inc., a public special purpose acquisition company sponsored by affiliates of Casdin Capital, LLC. and Corvex Management LP. Dr. Robins holds a BS in Physics from Harvard University and an MS and PhD in Physics from the University of California, Berkeley with a visiting appointment to the California Institute of Technology. Dr. Robins received postdoctoral appointments in the particle theory group at the Weizmann Institute of Science in Israel and at the Institute for Advanced Study at Princeton University. At Princeton, Dr. Robins developed bioinformatics algorithms for micro-RNA targets and bacterial genome analysis.

Julie Rubinstein has served as our President since February 2018 and assumed a strategic operating role as Chief Operating Officer in April 2023. Previously at Adaptive, Ms. Rubinstein served as our Chief Business Officer from January 2016 to February 2018, and our head of Corporate and Business Development from April 2011 to January 2016. Prior to joining us, Ms. Rubinstein held various worldwide commercial development roles at Pfizer Inc.’s Oncology division, primarily focusing on cancer immunotherapy. She also served in various roles with Johnson & Johnson Services, Inc., including in Europe. Ms. Rubinstein currently serves on the Board of Trustees for The Valerie Fund, a pediatric oncology organization in New Jersey and New York. Ms. Rubinstein holds an MBA from Harvard Business School and dual undergraduate degrees from The Wharton School and Annenberg School of Communications at the University of Pennsylvania.

Stacy Taylor has served as our Senior Vice President, General Counsel since March 2019, and before that, in our legal department in roles of ascending responsibility since March 2018. Prior to joining us, Ms. Taylor served as Senior Associate General Counsel for BTG International plc, a global specialist healthcare company, from July 2017 to March 2018. Prior to joining BTG, Ms. Taylor was a partner at the law firm of DLA Piper LLP (US) from 2007 to 2017, and prior to that practiced intellectual property law in private practice from 1985 to 2007. Ms. Taylor holds a JD from California Western School of Law and a BS in Biological Sciences, Anatomy and Physiology from California Polytechnic State University at San Luis Obispo.

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