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PSNL US Equity

Personalis, Inc.Health Care · Services-Medical Laboratories · CIK 1527753 · FY ends Dec 31
$15.81
+1.90 (+13.66%)
USD · as of 2026-08-19 · marketstack

PSNL · 10-K · period ended 2025-12-31

← all PSNL documents
filed 2026-02-26 · EDGAR original ↗

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10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2025

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _______ to _______.

Commission File Number 001-38943

Personalis, Inc.

(Exact name of Registrant as specified in its Charter)

6600 Dumbarton CircleFremont, California 94555

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code:(650) 752-1300

Securities registered pursuant to Section 12(b) of the Act:

Title of each class TradingSymbol(s) Name of each exchange on which registered

Common Stock, par value $0.0001 PSNL The Nasdaq Global Market

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☒ No ☐

Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act. Yes ☐ No ☒

Indicate by check mark whether the Registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the Registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☐

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the Registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the Registrant's executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

The aggregate market value of the voting and non-voting common stock held by non-affiliates of the Registrant, as of June 30, 2025, the last business day of the Registrant’s most recently completed second fiscal quarter, was approximately $578,182,932 based on the closing price reported for such date on the Nasdaq Global Market.

104,631,832 shares of common stock were issued and outstanding as of February 20, 2026.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant's definitive proxy statement relating to its 2026 annual meeting of stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated. The Registrant's definitive proxy statement will be filed with the U.S. Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates.

PERSONALIS, INC.

Form 10-K

For the Year Ended December 31, 2025

TABLE OF CONTENTS

Page

Note Regarding Forward-Looking Statements 3

PART I

Item 1. Business 6

Item 1A. Risk Factors 16

Item 1B. Unresolved Staff Comments 56

Item 1C. Cybersecurity 56

Item 2. Properties 57

Item 3. Legal Proceedings 57

Item 4. Mine Safety Disclosures 57

PART II

Item 6. [Reserved] 58

Item 7A. Quantitative and Qualitative Disclosures About Market Risk 68

Item 8. Financial Statements and Supplementary Data 69

Item 9A. Controls and Procedures 99

Item 9B. Other Information 100

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections 100

PART III

Item 10. Directors, Executive Officers and Corporate Governance 101

Item 11. Executive Compensation 102

Item 14. Principal Accountant Fees and Services 103

PART IV

Item 15. Exhibits, Financial Statement Schedules 104

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NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical facts contained in this Annual Report on Form 10-K, including statements regarding our future results of operations or financial condition, business strategy and plans, and objectives of management for future operations, are forward-looking statements. In some cases, you can identify forward-looking statements because they contain words such as “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “might,” “objective,” “ongoing,” “plan,” “potential,” “predict,” “project,” “should,” “will,” or “would” or the negative of these words or other similar terms or expressions. These forward-looking statements include, but are not limited to, statements concerning the following:

the evolution of cancer therapies and market adoption of our testing services;

estimates of our future revenue and the timing thereof, expenses, use of cash and other resources, cost savings, capital requirements, and our needs for additional financing and our ability to obtain financing when needed;

future reimbursement and reimbursement rulings and the timing thereof;

our business strategies, including our aim to focus on certain indications and the timing thereof;

the benefits of our testing services, including their ability to increase the probability of clinical trial success;

our ability to enter into and compete effectively in existing and new markets, with existing competitors and new market entrants;

our ability to manage and grow our business by expanding our sales to existing customers or introducing our testing services to new customers;

our sales, marketing and commercialization plans and strategies, including the expected benefits of and activities to be performed under our Commercialization and Reference Laboratory Agreement with Tempus AI, Inc. (“Tempus”);

our future business with the U.S. Department of Veterans Affairs' Million Veteran Program (“VA MVP”), ModernaTX, Inc. (“Moderna”), Merck & Co., Inc. (“Merck”), and other collaboration partners and customers;

our belief that approval of personalized cancer therapies by the U.S. Food and Drug Administration (“FDA”) may drive benefits to our business;

our ability to benefit from the scaling of our infrastructure and capacity at our headquarters facility in Fremont;

the impact our collaboration agreements and key opinion leaders may have on the broader use of our testing services in the future;

the potential impacts of inflation, macroeconomic conditions, and geopolitical conflicts on our business and operations;

our ability to establish and maintain intellectual property protection for our testing services or avoid claims of infringement;

our success in defending and enforcing our intellectual property rights, including patents;

potential effects of government regulation;

our ability to hire and retain key personnel; and

our ability to maintain proper and effective internal controls.

Actual events or results may differ from those expressed in forward-looking statements. As such, you should not rely on forward-looking statements as predictions of future events. We have based the forward-looking statements contained in this Annual Report on Form 10-K primarily on our current expectations and projections about future events and trends that we believe may affect our business, financial condition, operating results, prospects, strategy, and financial needs. The outcome of the events described in these forward-looking statements is subject to risks, uncertainties, assumptions, and other factors described in the section titled “Risk Factors” and elsewhere in this Annual Report on Form 10-K. Moreover, we operate in a highly competitive and rapidly changing environment. New risks and uncertainties emerge from time to time, and it is not possible for us to predict all risks and uncertainties that could have an impact on the forward-looking statements contained in this Annual Report on Form 10-K. The results, events and circumstances reflected in the forward-looking statements may not be achieved or occur, and actual results, events or circumstances could differ materially from those described in the forward-looking statements.

In addition, statements that “we believe” and similar statements reflect our beliefs and opinions on the relevant subject. These statements are based on information available to us as of the date of this Annual Report on Form 10-K. While we believe that such information provides a reasonable basis for these statements, such information may be limited or incomplete. Our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all relevant information. These statements are inherently uncertain, and investors are cautioned not to unduly rely on these statements.

The forward-looking statements made in this Annual Report on Form 10-K relate only to events as of the date on which the statements are made. We undertake no obligation to update any forward-looking statements made in this Annual Report on Form 10-K to reflect events or circumstances after the date of this Annual Report on Form 10-K or to reflect new information, actual results, revised expectations, or the occurrence of unanticipated events, except as required by law. We may not actually achieve the plans, intentions or expectations disclosed in our forward-looking statements, and you should not place undue reliance on our forward-looking statements.

Unless the context otherwise requires, references in this Annual Report on Form 10-K to the “Company,” “Personalis,” “we,” “us” and “our” refer to Personalis, Inc. and our subsidiary, Personalis (UK) Ltd.

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Summary of Risk Factors

The following is a summary of the principal risks and uncertainties that could materially adversely affect our business, financial condition, or results of operations. You should read this summary together with the more detailed description of risk factors below under Item 1A, “Risk Factors."

Operational, Strategic and Business Risks

We have a history of losses and we expect to incur significant losses for the foreseeable future and may not be able to generate sufficient revenue to achieve or sustain profitability.

If we are unable to increase sales of our current testing services or successfully develop and commercialize other services, or if we are unable to execute our sales and marketing strategy for our testing services or unable to gain sufficient acceptance in the market, or if we are unable to generate sufficient reimbursement or coverage by insurance or governmental payors for our testing services, we may fail to generate sufficient revenue to achieve profitability and sustain our business.

We have substantial customer concentration, with a limited number of customers accounting for a substantial portion of our revenue and accounts receivable; in particular, we currently derive a substantial portion of our revenue from two of our largest customers, Moderna and the VA MVP, and in the past have derived a substantial portion of our revenue from other large customers.

Building our clinical laboratory business is subject to a number of reimbursement challenges and we may not be able to establish the medical necessity of our tests for coverage or reimbursement rates that cover our costs.

We are pursuing a partner-centric strategy and have key relationships with Tempus, Myriad Genetics, Inc., Moderna, and Merck, among others. These and any other partnering and/or collaboration agreements that we have entered into or may enter into in the future may not be successful, or may terminate, which could adversely impact our business or affect our ability to develop and commercialize our testing services.

We rely on a limited number of suppliers, or in some cases, a sole supplier, for some laboratory instruments and materials, and we may not be able to replace or immediately transition to alternative suppliers should we need to do so.

International trade policies, including tariffs, sanctions and trade barriers may adversely affect our business, financial condition, results of operations and prospects.

We have a single facility and if it becomes damaged or inoperable, or we are required to vacate our facility, our ability to sell and provide our testing services and pursue research and development efforts may be jeopardized.

If we cannot develop testing services to keep pace with rapid advances in technology, medicine, and science our operating results and competitive position could be harmed.

Personalized cancer therapies represent new therapeutic approaches that could result in heightened regulatory scrutiny, delays in clinical development, or delays or inability to achieve regulatory approval, commercialization, or payor coverage, any of which could adversely affect our business.

The loss of key members of our executive management team or the inability to hire, retain, or motivate highly skilled personnel could adversely affect our business.

We may not be able to manage our future growth effectively, which could make it difficult to execute our business strategy.

We may acquire businesses or assets, form joint ventures, or make investments in other companies or technologies that could harm our operating results, dilute stockholders’ ownership, or cause us to incur debt or significant expense.

Regulatory, Legal and Cybersecurity Risks

Our tests may be subject to regulatory action if regulatory agencies or authorities determine that our tests do not appropriately comply with statutory and regulatory requirements enforced by the FDA, or equivalent foreign regulatory authorities and/or CLIA requirements for quality laboratory testing or equivalent foreign requirements.

Complying with numerous statutes and regulations pertaining to our business is an expensive and time-consuming process, and we may be subject to regulatory action if we or our service offerings do not comply with applicable requirements.

Our internal information technology systems, or those of our third-party vendors, contractors, or consultants, may fail or suffer security breaches, loss or leakage of data, and other disruptions, which could adversely affect our business.

Failure or perceived failure to comply with existing or future laws, regulations, contracts, self-regulatory schemes, standards, and other obligations related to data privacy and security (including security incidents) could harm our business. Compliance or the actual or perceived failure to comply with such obligations could increase the cost of our offerings, limit their use or adoption, and otherwise negatively affect our operating results and business.

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Our employees may engage in misconduct or other improper activities, such as noncompliance with regulatory standards and requirements, including the Foreign Corrupt Practices Act of 1977 and other anti-bribery laws, which could cause significant liability for us and harm our reputation.

Changes in health care policy could increase our costs, decrease our revenue, and impact sales of and reimbursement for our tests. If we grow our business by developing additional in vitro diagnostic tests, we may be subject to reimbursement challenges.

Competitors could take legal action against us for statements that are made by the Company and/or its representatives, which may require us to spend significant time and money, including damages, and could limit our ability to market our tests.

Intellectual Property Risks

Litigation or other proceedings or claims of intellectual property infringement, misappropriation, breach of license terms or other violations may require us to spend significant time and money, including damages, and could prevent us from selling our tests.

If we cannot license rights to use necessary technologies on reasonable terms, we may not be able to commercialize new services.

If we are not able to obtain, maintain and enforce patent protection for our testing services or technologies, our competitors and other third parties could develop and commercialize services and technologies similar or identical to ours, and our ability to successfully commercialize our testing services and technologies may be adversely affected.

If we are unable to protect the confidentiality of our trade secrets and know-how, our business would be harmed.

Our use of “open source” software could subject our proprietary software to general release, adversely affect our ability to sell our testing services, and subject us to possible litigation.

If our trademarks and trade names are not adequately protected, then we may not be able to build name recognition in our markets of interest and our business may be adversely affected.

Financial and Market Risks and Risks Related to Owning Our Common Stock

Our inability to raise additional capital on acceptable terms in the future may limit our ability to continue to operate our business and further expand our operations.

The market price of our common stock may be volatile or may decline steeply or suddenly regardless of our operating performance, we may not be able to meet investor or analyst expectations, and you may lose all or part of your investment.

Our quarterly results may fluctuate significantly, which could adversely impact our common stock’s value.

Insiders or holders of greater than five percent of our outstanding common stock may exercise significant control over our company and will be able to influence corporate matters.

Future sales of shares by existing stockholders, or the perception that such sales could occur, could cause the stock price of our common stock to decline.

We do not currently intend to pay dividends on our common stock and, consequently, your ability to achieve a return on your investment will depend on appreciation of the value of our common stock.

If securities or industry analysts do not publish research or reports about our business, or publish inaccurate or unfavorable research about our business, our stock price and trading volume could decline.

Delaware law and provisions in our amended and restated certificate of incorporation and amended and restated bylaws could make a merger, tender offer, or proxy contest difficult, thereby depressing the trading price of our common stock; our amended and restated certificate of incorporation has an exclusive forum provision, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers, or employees.

Our disclosure controls and procedures may not prevent or detect all errors or acts of fraud.

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PART I

Item 1. Business.

Company Background

Personalis develops, markets, and sells advanced cancer genomic testing services. Our testing services are used by physicians to detect residual or recurrent cancer in patients, monitor cancer response to therapy, and uncover insights for therapy selection. Our testing services are used by pharmaceutical companies for translational research, biomarker discovery, the development of personalized cancer therapies, and clinical trials. We also provide whole exome sequencing services for other diagnostic companies and whole genome sequencing services for population sequencing initiatives.

We perform our testing services in a large-scale, high-quality, Clinical Laboratory Improvement Amendments of 1988 ("CLIA") certified and College of American Pathologists (“CAP”) accredited, laboratory located in our 100,000 square foot headquarters in Fremont, California. We were incorporated under the laws of the state of Delaware in 2011 under the name Personalis, Inc. and became a publicly-traded company in 2019.

Testing Services

For cancer patients

NeXT Personal® Dx

NeXT Personal Dx is a tumor-informed liquid biopsy test for the detection of minimal residual disease ("MRD") and recurrence monitoring. We believe NeXT Personal Dx, which was introduced in the fourth quarter of 2023, is the first ultrasensitive test on the market to detect MRD and monitor therapy response in patients with solid tumor cancers. NeXT Personal Dx has been shown to potentially detect cancer recurrence ahead of traditional imaging and is designed to aid decision making throughout a patient's cancer journey. NeXT Personal Dx involves the initial whole genome sequencing of matched tumor and normal samples from a patient in order to create a personalized detection assay for each patient based on the biology of the patient's cancer and the subsequent use of that personalized assay to test one or more of the patient's blood/plasma samples. In the first quarter of 2026, we introduced a new feature to our ultrasensitive test called Real-Time Variant TrackerTM, and this capability is intended to provide clinicians with additional reporting of detected resistance-associated mutations and therapeutically targetable mutations that can potentially inform new opportunities to optimize patient management of disease. NeXT Personal Dx helps answer these questions: Does the patient still have cancer after curative intent treatment? How is the patient's cancer responding to therapy? Has the cancer potentially recurred? And if so, are any resistance mutations and targetable mutations present?

NeXT Dx®

NeXT Dx is a comprehensive tumor profiling test that is used to help select therapy for a cancer patient and identify potential clinical trials for a patient. It analyzes a patient’s exome and transcriptome with matched tumor-normal analysis. We believe it improves the chances of finding an effective therapy or help a doctor find an appropriate clinical trial. NeXT Dx helps answer the question: What are the tumor mutations with actionable therapies and clinical trials for the patient?

For pharmaceutical and biopharmaceutical companies

NeXT Personal

NeXT Personal is a tumor-informed liquid biopsy test for detection of MRD and recurrence monitoring, in solid tumor cancers. It delivers industry-leading, ultra-high sensitivity, which we believe allows for detection of cancer recurrence earlier than other technologies. NeXT Personal helps answer these questions: Who are the right patients to enroll into a clinical trial? How are patients responding to the investigational therapy? Can circulating tumor DNA ("ctDNA") potentially be used as an endpoint in clinical trials? In addition, NeXT Personal can be used as a potential Clinical Trial Assay (CTA) to help select patients for a prospective Phase 2 or a Phase 3 trial for a new drug. Should these trials be successful then NeXT Personal may be approved by the FDA as a Companion Diagnostics test for that new drug.

ImmunoID NeXT®

ImmunoID NeXT is a tissue-based test that combines whole exome and whole transcriptome sequencing data with advanced analytics to provide a multi-dimensional view of the tumor and the tumor microenvironment from a single sample. It is designed to enable the development of more efficacious cancer (immuno) therapies and the next-generation of composite biomarkers to better predict patient response. ImmunoID NeXT helps answer these questions: What are the markers and composite biomarkers in the tumor and the tumor microenvironment that contribute to therapy response and resistance? What are the neoantigens in the tumor that can be used in individualized neoantigen therapy (INT)?

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For diagnostics companies and population sequencing initiatives

WES

We perform whole exome sequencing ("WES") of cancer tissue and matched blood samples for diagnostic companies as an input to their products.

WGS

We perform whole genome sequencing ("WGS") on human samples for research projects, such as population sequencing initiatives.

Markets and Distribution

Our customers include global pharmaceutical companies, biopharmaceutical companies, diagnostics companies, universities, non-profits, government entities, and cancer patients. We sell through a small direct sales force, organized by geography. In November 2023, we entered into an agreement with Tempus to co-commercialize NeXT Personal Dx in the clinical diagnostics market. In December 2024, we agreed to expand the relationship to include biopharma industry customers. Under this expanded relationship, Tempus can offer our NeXT Personal MRD testing service to pharmaceutical and biotech customers who wish to bundle our tumor-informed MRD testing with other Tempus offerings in a given study. In July 2025, we further expanded our collaboration partnership with Tempus to authorize Tempus to market NeXT Personal Dx for colorectal cancer and extend the term of the Tempus Agreement through November 25, 2029.

The principal markets for our testing services are the United States, Europe (including the U.K.), and rest of the world, including Asia-Pacific, which accounted for 90%, 9%, and 1%, respectively, of our revenue for the year ended December 31, 2025.

Clinical Evidence and Reimbursement

Generating clinical evidence is critical for driving adoption of our tests in the clinical diagnostic test market (i.e., for cancer patients) and establishing reimbursement by Medicare and private insurance companies. To this end, one of our key strategies is working with a growing number of leading cancer centers and world-class academic research institutions to build and publish the clinical evidence-base to support our testing services in our key indications. Because of the ultra-high sensitivity of our technology, we are initially focusing on three indications: breast cancer, lung cancer, and immunotherapy (IO) monitoring, where early-stage cancer recurrence historically has been difficult to detect. At this time, we are beginning to expand into other indications including colorectal cancer (CRC), cervical, and others. We currently have collaborations with Cancer Research UK, University College London, and the Francis Crick Institute (the TRACERx study); Institut Curie; The Royal Marsden; the Vall d'Hebron Institute of Oncology (VHIO); the University of California, San Diego, Duke University; Vanderbilt University and Johns Hopkins University (the PREDICT study); the Dana-Farber Cancer Institute; the University of Texas M.D. Anderson Cancer Center; University Medical Center Hamburg-Eppendorf (also known as UKE); Criterium and the Academic Breast Cancer Consortium; Yale Cancer Center; Aarhus University; British Columbia Cancer; and University Health Network, that will focus on building the evidence-base for our technology and these indications.

Furthermore, generating clinical evidence is crucial to obtaining reimbursement coverage from Medicare and other private payors. One of our 2025 goals was to submit for Medicare reimbursement for NeXT Personal Dx upon publication of compelling clinical evidence and receive Medicare coverage. In 2025, we submitted our three indications for Medicare coverage, and, in November 2025, we received Medicare coverage for NeXT Personal Dx for post-treatment surveillance of cancer recurrence in patients with Stage II and III breast cancer, with an effective date of October 7, 2025. In February 2026, we received Medicare coverage for NeXT Personal Dx for surveillance of patients with Stage I to III non-small cell lung cancer ("NSCLC"), with an effective date of January 9, 2026. In addition, we received a Medicare coverage determination for our comprehensive genomic profiling (CGP) test, called NeXT Dx, in January 2024, with an effective date of August 29, 2023. We estimate that approximately half of new solid tumor cancer cases will be in patients covered by Medicare.

Competition

Our principal competition comes from commercial and academic organizations that employ various approaches to produce test results or information that is similar to what we generate for our patients and customers. Some of our present or potential competitors include Adela, Inc., Caris Life Sciences, Inc., DELFI Diagnostics, Inc., Exact Sciences Corporation, which it is expected to be acquired by Abbott Laboratories, Inc., in the second quarter of 2026, Foresight Diagnostics Inc. (“Foresight”), which was acquired by Natera, Inc. (“Natera”) in December 2025, Foundation Medicine, Inc., GRAIL, Inc., Guardant Health, Inc., Haystack Oncology, Inc., which was acquired by Quest Diagnostics Incorporated in June 2023, Laboratory Corporation of America Holdings, MedGenome Inc., Myriad Genetics, Inc. (“Myriad”), Natera, NeoGenomics, Inc., Predicine, Inc., SAGA Diagnostics AB, and Veracyte, Inc.

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Additionally, several companies develop next-generation sequencing platforms that can be used for genomic profiling for biopharmaceutical research and development applications. These include Illumina, Inc. ("Illumina"), Thermo Fisher Scientific Inc., and other organizations that specialize in the development of next-generation sequencing instrumentation that can be sold directly to biopharmaceutical companies, clinical laboratories, and research centers. Separate from their instrumentation product lines, both Illumina and Thermo Fisher Scientific Inc., for example, currently market next-generation sequencing clinical oncology kits that are sold to customers who have bought and operate their respective sequencing instruments.

We believe that we compete favorably because of our differentiated technology, such as our ultrasensitive approach for MRD that is able to detect cancer recurrence many months before imaging or other technologies, comprehensive data and variant calling we provide to our biopharmaceutical customers, high-quality results, and exceptional service.

Intellectual Property

Protection of our intellectual property is fundamentally important in our business. Specifically, our success is dependent on our ability to obtain and maintain proprietary protection for our unique technology, processes, and approaches, defend and enforce our intellectual property rights, and operate our business without infringing, misappropriating, or otherwise violating valid and enforceable intellectual property rights of others. We protect our research and development investments, inventions, and unique processes by relying on a combination of patents, trademarks, copyrights, trade secrets, know-how, confidentiality agreements and procedures, non-disclosure agreements with third parties, employee disclosure and invention assignment agreements, and other contractual rights.

Our patent strategy is focused on seeking coverage for our core technology, our NeXT platform, including applications and implementations for enhancing sequencing coverage of certain genomic regions, identifying neoantigens, analyzing cell-free nucleic acids, and creating personalized cancer recurrence detection assays. In addition, we file for patent protection on our ongoing research and development efforts, particularly related to other novel assay technologies which may be applicable to the diagnosis and treatment of cancer and other diseases.

Our patent portfolio is comprised of patents and patent applications owned by the Company. These patents and patent applications generally fall into five broad categories:

personalized genetic testing assays, including claims directed to methods for using sequencing data to create a personalized genetic test to monitor cancer progression, identify neoantigen candidates for personalized cancer therapy treatment, or detect the recurrence of disease at the earliest possible timepoint;

liquid biopsy methods, including claims directed to methods of analyzing sequenced nucleic acids obtained from a patient sample in comparison with nucleic acids representing the reference genome, obtained from a blood sample, to identify disease, or recommend a drug treatment;

clinical interpretation and neoantigen identification and prediction methods, including claims directed to methods of ranking genes associated with a phenotype and inheritance pattern or identifying neoantigens expressed in a disease sample that may be used for targeted treatments; and

hybrid exome-genome technologies, including claims directed to methods for combining exome and/or whole genome sequencing data generated from a sample, along with the identification of other variants to identify or detect disease;

our Accuracy and Content Enhanced ("ACE") assay and NeXT platform technology, including claims directed to methods for enriching nucleic acids from a sample based on differences in various genomic features, such as GC-content, molecular size, presence of genetic variations or rearrangements, identification of biomedically interpretable variants, epigenetic modifications, and/or species-origin (e.g., human and non-human).

As of December 31, 2025, we own 36 issued U.S. patents and 26 issued foreign patents. Issued U.S. patents in our portfolio of company-owned patents are expected to expire between 2033 and 2042, excluding any additional term for patent term adjustments or patent term extensions. If patents are issued on our pending patent applications, the resulting patents are projected to expire on dates ranging from 2033 to 2045.

Supply of Materials

We rely on a limited number of suppliers for sequencers and other equipment and raw materials that we use in our laboratory operations. For example, we rely on Illumina as the sole supplier of sequencers and various associated reagents, and as the sole provider of maintenance and repair services for these sequencers. We have certain agreements and purchase arrangements in place with Illumina to satisfy the projected needs of our laboratory operations. As other technologies and platforms become available, we intend to evaluate them for potential use.

Customer Concentration

We currently derive a significant portion of our revenue from Moderna by providing genomic testing in its ongoing clinical trials for its personalized cancer therapy and the VA MVP, which is a large-scale population sequencing initiative. Moderna accounted for 22% and 28% and the VA MVP accounted for 17% and 9% of our revenue for the years ended December 31, 2025 and 2024, respectively.

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We previously derived a significant portion of our revenue from Natera under our partnership to provide advanced tumor analysis for use in Natera's MRD testing. Natera accounted for 8% and 30% of our revenue for the years ended December 31, 2025 and 2024, respectively. Our top five customers, including Moderna, the VA MVP and Natera, accounted for 62% and 81% of our revenue for the years ended December 31, 2025 and 2024, respectively.

Segments

We manage our business as one operating segment, which is to provide advanced cancer genomic testing services for precision oncology applications, personalized testing services, and other tests. We derive revenue primarily in the United States and manage our business activities on a consolidated basis. Our chief executive officer (“CEO”) is our chief operating decision maker (“CODM”) who reviews consolidated operating results to make decisions about allocating resources and assessing performance for the entire company.

Regulatory Environment

Coverage and Reimbursement

Our ability to commercialize diagnostic testing services based on our technology will depend in large part on the extent to which coverage and reimbursement for our testing services can be achieved. Coverage and reimbursement of new services is uncertain, and whether we can obtain coverage and adequate reimbursement is unknown. In the U.S., there is no uniform policy for determining coverage and reimbursement. Coverage can differ from payor to payor, and the process for determining whether a payor will provide coverage is separate from the process for setting the reimbursement rate. In addition, the U.S. government, state legislatures and foreign governments have shown significant interest in implementing cost containment programs to limit the growth of government-paid healthcare costs. Additionally, the coverage and reimbursement status of newly authorized laboratory tests, including our NeXT Personal Dx offering, is uncertain. The commercial success of our current and future services in both domestic and international markets may depend in part on the availability of coverage and adequate reimbursement from third-party payors, including government payors, such as the Medicare and Medicaid programs, managed care organizations, and other third-party payors.

Federal and State Laboratory Licensing Requirements

Under CLIA, a laboratory is any facility that performs laboratory testing on specimens derived from humans for the purpose of providing information for the diagnosis, prevention or treatment of disease, or the impairment of or assessment of health. CLIA requires that a laboratory hold a certificate applicable to the type of laboratory examinations it performs and that it complies with, among other things, standards covering operations, personnel, facilities administration, quality systems and proficiency testing, which are intended to ensure, among other things, that clinical laboratory testing services are accurate, reliable and timely.

To renew our CLIA certificate, we are subject to survey and inspection every two years to assess compliance with program standards. Because we are a CAP accredited laboratory, the Centers for Medicare & Medicaid Services (“CMS”) does not perform this survey and inspection and relies on our CAP survey and inspection. We also may be subject to additional unannounced inspections. Laboratories performing high complexity testing are required to meet more stringent requirements than laboratories performing less complex tests. In addition, a laboratory that is certified as “high complexity” under CLIA may develop, manufacture, validate, and market proprietary tests referred to as laboratory developed tests (“LDTs”). CLIA requires analytical validation including accuracy, precision, specificity, sensitivity, and establishment of a reference range for any LDT used in clinical testing. The regulatory and compliance standards applicable to the testing we perform may change over time, and any such changes could have a material effect on our business.

CLIA provides that a state may adopt laboratory regulations that are more stringent than those under federal law, and a number of states have implemented their own more stringent laboratory regulatory requirements. State laws may require that nonresident laboratories, or out-of-state laboratories, maintain an in-state laboratory license to perform tests on samples from patients who reside in that state. As a condition of state licensure, these state laws may require that laboratory personnel meet certain qualifications, specify certain quality control procedures or facility requirements, or prescribe record maintenance requirements. Because our laboratory is located in the state of California, we are required to and do maintain a California state laboratory license. We also maintain licenses to conduct testing in other states where nonresident laboratories are required to obtain state laboratory licenses, including Maryland, Pennsylvania, Rhode Island, and New York. Other states may currently have or adopt similar licensure requirements in the future, which may require us to modify, delay, or stop its operations in those states.

Regulatory framework for medical devices in the United States

Pursuant to its authority under the Federal Food, Drug and Cosmetic Act (“FDC Act”), the FDA has jurisdiction over medical devices, which are defined to include, among other things, in vitro diagnostic devices (“IVDs”). The FDA regulates, among other things, the research, design, development, pre-clinical and clinical testing, manufacturing, safety, effectiveness, packaging, labeling, storage, recordkeeping, pre-market authorization, adverse event reporting, marketing, promotion, sales, distribution, and import and export of medical devices. Unless an exemption applies, each new or significantly modified medical device we may seek to commercially distribute in the United States will require either a premarket notification to the FDA requesting permission for commercial distribution under Section 510(k) of the FDC Act, also referred to as a 510(k) clearance, de novo classification under Section 513(f)(2) of the FDC Act, or approval

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from the FDA of a premarket approval application (“PMA”) under Section 515(c) of the FDC Act. These premarket review processes can be resource intensive, expensive, and lengthy, and require payment of significant user fees.

Although the FDA regulates medical devices, including IVDs, the FDA has historically exercised its enforcement discretion and not enforced applicable provisions of the FDC Act and FDA regulations with respect to LDTs, which are a subset of IVDs that are intended for clinical use and developed, validated, and offered within a single laboratory for use only in that laboratory. We currently market our diagnostic test services as LDTs.

On May 6, 2024, the FDA published a final rule on the regulation of LDTs, which amended the FDA regulations under 21 CFR Part 809 to make explicit that LDTs are devices under the FDC Act. This final rule, which implements a five-stage phase-out of enforcement discretion, was vacated by the U.S. District Court for the Eastern District of Texas on March 31, 2025. The court ruled that the FDA exceeded its statutory authority under the FDC Act, asserting that LDTs are professional services rather than tangible manufactured products. Following this decision, the FDA chose not to appeal and officially rescinded the regulation on September 19, 2025, reverting 21 CFR § 809.3 to its pre-2024 language. Consequently, the proposed five-stage compliance timeline is void, and LDTs are now regulated primarily by CMS under the Clinical Laboratory Improvement Amendments (CLIA) framework.

If the FDA determines that the tests and associated software used in our testing services do not fall within the definition of an LDT, or there are other regulatory or legislative changes, or if we voluntarily submit one or more of our tests for premarket notification, review, and marketing authorization by the FDA as medical devices, we may be required to obtain premarket authorization for our tests and associated software under Section 510(k), 513(f)(2), or 515(c) of the FDC Act. We would also be subject to ongoing regulatory requirements such as registration and listing requirements, labeling requirements, medical device reporting requirements, and current good manufacturing practice requirements. The regulatory requirements to which our tests are subject would depend on the FDA’s classification of our tests. The FDA has issued regulations classifying medical devices into one of three classes (Class I, Class II, or Class III) depending on risk of the device for use as intended and the degree of regulation that the FDA finds necessary to provide reasonable assurance of their safety and effectiveness. The class into which a device is placed determines the requirements that a medical device manufacturer must meet both pre- and post-market. On January 31, 2024, FDA announced its intent to initiate a reclassification process for most IVDs that are currently Class III (high risk), the majority of which are infectious disease and companion diagnostic IVDs, into Class II (moderate risk) with certain special controls. This reclassification would allow manufacturers of certain types of IVDs to seek marketing clearance through the less burdensome Class II 510(k) premarket notification pathway rather than the Class III premarket approval (PMA) pathway, the most stringent type of FDA medical device review.

Generally, Class I devices do not require premarket authorization, but are subject to a comprehensive set of regulatory requirements referred to as general controls. Class II devices, in addition to general controls, generally require special controls and premarket clearance through either the submission of a section 510(k) premarket notification or a De Novo authorization request under Section 513(f)(2) of the FDC Act. Class III devices are subject to general controls and also require premarket approval prior to commercial distribution, which is a more rigorous process than the De Novo authorization or clearance process. Under the FDC Act, a device that is first marketed after May 28, 1976 is by default a Class III device requiring premarket approval unless it is within a type of generic device class that has been classified as Class I or Class II. Even if a device falls under an existing Class II, non-exempt, device classification, the product must also be shown to be “substantially equivalent” to a legally marketed predicate device through submission of a section 510(k) premarket notification. If after reviewing a firm’s 510(k) premarket notification, the FDA determines that a device is not substantially equivalent to a legally marketed predicate device, the new device is classified into Class III, requiring premarket approval. It is possible for a manufacturer of a device of a new type to obtain a Class I or Class II designation, if there is no appropriate predicate and the device is low or moderate risk, by submitting a De Novo request for reclassification.

The process for submitting a 510(k) premarket notification and receiving FDA clearance usually takes from three to 12 months, but it can take significantly longer and clearance is never guaranteed. Similarly, the process for submitting a De Novo authorization request and receiving FDA’s granting of the request usually takes from 4 to 18 months, but it can take significantly longer and such granting of the request is never guaranteed. The process for submitting and obtaining FDA approval of a PMA is much more costly, lengthy, and uncertain. It generally takes from one to three years or even longer and approval is not guaranteed. PMA approval typically requires extensive clinical data and can be significantly longer, more expensive and more uncertain than the De Novo authorization or 510(k) clearance process. Despite the time, effort and expense expended, there can be no assurance that a particular device ultimately will receive marketing authorization from the FDA.

The FDA requires medical device manufacturers to comply with, among other things, current good manufacturing practices for medical devices, set forth in the Quality Management System Regulation at 21 C.F.R. Part 820, which took effect on February 2, 2026, and requires manufacturers to follow elaborate design, testing, control, documentation, and other quality assurance procedures during the manufacturing process; the medical device reporting regulation, which requires that manufacturers report to the FDA if their device or a similar device they market may have caused or contributed to a death or serious injury or malfunctioned in a way that would likely cause or contribute to a death or serious injury if it were to recur; labeling regulations, including the FDA’s general prohibition against promoting products for unapproved or “off-label” uses; the reports of corrections and removals regulation, which requires manufacturers to report to the FDA if a device correction or removal was initiated to reduce a risk to health posed by the device or to remedy a violation of the FDC Act caused by the device which may present a risk to health; and the establishment registration and device listing regulation.

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In addition, any marketing authorization that we may obtain for our tests may contain requirements for costly post-market testing and surveillance to monitor the safety or effectiveness of the tests. The FDA has broad post-market enforcement powers, and if unanticipated problems with our tests arise, or if we or our suppliers fail to comply with regulatory requirements following FDA marketing authorization, we may become subject to enforcement actions such as:

restrictions on manufacturing processes;

restrictions on marketing of our tests;

warning letters;

withdrawal or recall of our tests from the market;

refusal to provide marketing authorization for pending PMAs, De Novo authorization requests, 510(k)s, or supplements to approved PMAs, authorized De Novo requests, or cleared 510(k)s that we submit;

fines, restitution, or disgorgement of profits or revenue;

suspension or withdrawal of regulatory clearances or approvals;

limitation on, or refusal to permit, import or export of our tests;

seizures;

injunctions; or

imposition of civil or criminal penalties.

Moreover, the FDA strictly regulates the promotional claims that may be made about medical devices. In particular, a medical device may not be promoted for uses that are not approved by the FDA as reflected in the device’s approved labeling. However, companies may share truthful and not misleading information that is otherwise consistent with the product’s FDA approved labeling. The FDA and other agencies actively enforce the laws and regulations prohibiting the promotion of off-label uses, and a company that is found to have improperly promoted off-label uses may be subject to significant civil, criminal, and administrative penalties.

In addition, many of the products we use to perform our tests, including sequencers and various associated reagents supplied to us by Illumina, are labeled as research use only (“RUO”) in the U.S. RUO products are exempt from FDA medical device requirements provided their manufacturers comply with specified labeling and restrictions on distribution. The products must bear the statement: “For Research Use Only. Not for Use in Diagnostic Procedures.” Manufacturers of RUO products cannot make any claims related to safety, effectiveness or diagnostic utility, and RUO products cannot be intended by the manufacturer for clinical diagnostic use. A product promoted for diagnostic use may be viewed by the FDA as adulterated and misbranded under the FDC Act and is subject to FDA enforcement activities, including requiring the manufacturer to seek marketing authorization for the products. We currently use Illumina and other RUO products for our clinical diagnostic tests. If the FDA were to require marketing authorization for the sale of Illumina’s RUO products and if Illumina does not obtain such marketing authorization, we would have to find an alternative sequencing platform for some or all of our test services.

Federal and State Fraud and Abuse Laws

We are subject to federal fraud and abuse laws such as the federal Anti-Kickback Statute (the “AKS”), the federal prohibition against physician self-referral (the “Stark Law”), and the federal false claims law, or the False Claims Act (the “FCA”). We are also subject to similar state and foreign fraud and abuse laws.

The AKS prohibits, among other things, knowingly and willfully offering, paying, soliciting, or receiving remuneration, directly or indirectly, overtly or covertly, in cash or in kind, in return for or to induce such person to refer an individual, or to purchase, lease, order, arrange for, or recommend purchasing, leasing, or ordering, any good, facility, item, or service that is reimbursable, in whole or in part, under a federal healthcare program.

The Stark Law and similar state laws, including California’s Physician Ownership and Referral Act, generally prohibit, among other things, clinical laboratories and other entities from billing a patient or any governmental or commercial payor for any diagnostic services when the physician ordering the service, or any member of such physician’s immediate family, has a direct or indirect investment interest in or compensation arrangement with us, unless the arrangement meets an exception to the prohibition.

The federal civil and criminal false claims laws including the FCA, which imposes liability on any person or entity that, among other things, knowingly presents, or causes to be presented, a false or fraudulent claim for payment to the federal government, and the federal Civil Monetary Penalties Law, which prohibits, among other things, the offering or transfer of remuneration to a Medicare or state healthcare program beneficiary if the person knows or should know it is likely to influence the beneficiary’s selection of a particular provider, practitioner, or supplier of services reimbursable by Medicare or a state healthcare program, unless an exception applies. Under the FCA, private citizens can bring claims on behalf of the government through qui tam actions. We must also operate within the bounds of the fraud and abuse laws of the states in which we do business which may apply to items or services reimbursed by non-governmental third-party payors, including private insurers.

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The Eliminating Kickbacks in Recovery Act

The Eliminating Kickbacks in Recovery Act of 2018 (“EKRA”) prohibits payments for referrals to recovery homes, clinical treatment facilities, and laboratories and is similar to the federal Anti-Kickback Statute in that it creates criminal penalties for knowing or willful payment or offer, or solicitation or receipt, of any remuneration, whether directly or indirectly, overtly or covertly, in cash or in kind, in exchange for the referral or inducement of laboratory testing unless a specific exception applies. Unlike the federal Anti-Kickback Statute, EKRA’s reach extends beyond federal health care programs to include private insurance (i.e., it is an “all payor” statute). Additionally, most of the safe harbors available under the federal Anti-Kickback Statute are not reiterated under EKRA, and certain EKRA safe harbors conflict with the safe harbors available under the federal Anti-Kickback Statute. Therefore, compliance with a federal Anti-Kickback safe harbor does not guarantee protection under EKRA. Because EKRA is a new law, there is very little additional guidance to indicate how and to what extent it will be interpreted, applied and enforced by the government. Currently, there is no proposed regulation interpreting or implementing EKRA, nor any public guidance released by a federal agency concerning EKRA.

Other Federal and State Healthcare Laws

In addition to the requirements discussed above, several other healthcare laws could have an effect on our business. For example, the Health Insurance Portability and Accountability Act of 1996 (“HIPAA”) fraud and abuse provisions created federal civil and criminal statutes that prohibit, among other things, defrauding healthcare programs, willfully obstructing a criminal investigation of a healthcare offense, and falsifying or concealing a material fact or making any materially false statements in connection with the payment for healthcare benefits, items or services. Similar to the federal Anti-Kickback Statute, a person or entity does not need to have actual knowledge of the statute or specific intent to violate it in order to have committed a violation.

The federal Physician Payments Sunshine Act requires certain manufacturers of drugs, biologicals, and medical devices or supplies that require premarket approval by or notification to the FDA, and for which payment is available under Medicare, Medicaid, or the Children’s Health Insurance Program (“CHIP”), with certain exceptions, to report annually to CMS information related to (i) payments and other transfers of value to physicians (defined to include doctors, dentists, optometrists, podiatrists, and chiropractors), other healthcare professionals (such as physicians assistants and nurse practitioners) and teaching hospitals, and (ii) ownership and investment interests held by physicians and their immediate family members.

The “Anti-Markup Rule” and similar state laws prohibit, among other things, a physician or supplier billing the Medicare program from marking up the price of a purchased diagnostic service performed by another laboratory or supplier that does not “share a practice” with the billing physician or supplier. Penalties may apply to the billing physician or supplier if Medicare or another payor is billed at a rate that exceeds the performing laboratory’s charges to the billing physician or supplier, and the performing laboratory could be at risk under false claims laws, described below, for causing the submission of a false claim.

The “14-Day Rule,” also known as the Medicare Date of Service Rule, prohibits a laboratory supplier from billing the Medicare program for tests performed on samples collected during or within 14 days of an inpatient hospital stay, unless an exception applies, and requires the laboratory supplier to bill the hospital in those cases. Penalties may apply to the laboratory supplier if Medicare determines that the Medicare program was inappropriately billed for testing that should have been billed to the hospital where the sample was collected.

State client billing laws specify whether a person that did not perform the service is permitted to submit the claim for payment and if so, whether the non-performing person is permitted to mark up the cost of the services in excess of the price the purchasing provider paid for such services. For example, California has an anti-markup statute which prohibits providers from charging for any laboratory test that it did not perform unless the provider (a) notifies the patient, client or customer of the name, address, and charges of the laboratory performing the test, and (b) charges no more than what the provider was charged by the clinical laboratory which performed the test except for any other service actually rendered to the patient by the provider (for example, specimen collection, processing and handling) (California Business and Professions Code Section 655.5). This provision applies, with certain limited exceptions, to licensed persons such as physicians and clinical laboratories regulated under the Business and Professions Code. In addition, many states also have “direct-bill” laws, which means that the services actually performed by an individual or entity must be billed by such individual or entity, thus preventing ordering physicians from purchasing services from a laboratory and rebilling for the services they order. For example, California has a direct bill rule specific to anatomic pathology services that prohibits any provider from billing for anatomic pathology services if those services were not actually rendered by that person or under his or her direct supervision with some exemptions (California Business and Professions Code Section 655.7).

In addition, we may be subject to state laws that prohibit other specified practices, such as billing physicians for testing that they order; waiving coinsurance, copayments, deductibles, and other amounts owed by patients; billing a state Medicaid program at a price that is higher than what is charged to one or more other payors; employing, exercising control over, licensed professionals in violation of state laws prohibiting corporate practice of medicine and other professions, and prohibitions against the splitting of professional fees with licensed professionals.

As a clinical laboratory, our business practices may face additional scrutiny from government regulatory agencies such as the Department of Justice, the U.S. Department of Health and Human Services ("HHS"), Office of Inspector General (the “OIG”), and CMS. Certain arrangements between clinical laboratories and referring physicians have been identified in fraud alerts issued by the OIG as implicating the Anti-Kickback Statute. Efforts to ensure that our business arrangements with third parties will comply with applicable

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healthcare laws and regulations will involve substantial costs. If our operations are found to be in violation of any of these laws or any other governmental regulations that may apply to us, we may be subject to significant civil, criminal and administrative penalties, damages, fines, imprisonment, exclusion from government-funded healthcare programs, such as Medicare and Medicaid, disgorgement, contractual damages, reputational harm, diminished profits and future earnings, additional reporting, or oversight obligations if we become subject to a corporate integrity agreement or other agreement to resolve allegations of non-compliance with the law and the curtailment or restructuring of our operations. If any of the physicians or other healthcare providers or entities with whom we do business are found to be not in compliance with applicable laws, they may be subject to significant criminal, civil or administrative sanctions, including exclusions from government-funded healthcare programs.

HIPAA and HITECH

Under the administrative simplification provisions of HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act (“HITECH”), HHS issued regulations that establish uniform standards governing the conduct of certain electronic healthcare transactions and requirements for protecting the privacy and security of protected health information (“PHI”), used or disclosed by covered entities and business associates. Covered entities and business associates are subject to HIPAA and HITECH. Our subcontractors that create, receive, maintain, transmit, or otherwise process PHI on behalf of us are HIPAA “business associates” and must also comply with HIPAA as a business associate.

HIPAA and HITECH include privacy and security rules, breach notification requirements, and electronic transaction standards.

The Privacy Rule covers the use and disclosure of PHI by covered entities and business associates. The Privacy Rule generally prohibits the use or disclosure of PHI, except as permitted under the Rule. The Privacy Rule also sets forth individual patient rights, such as the right to access or amend certain records containing his or her PHI, or to request restrictions on the use or disclosure of his or her PHI.

The Security Rule requires covered entities and business associates to safeguard the confidentiality, integrity, and availability of electronically transmitted or stored PHI by implementing administrative, physical, and technical safeguards. Under HITECH’s Breach Notification Rule, a covered entity must notify individuals, the Secretary of the HHS, and in some circumstances, the media of breaches of unsecured PHI.

In addition, we may be subject to state health information privacy and data breach notification laws, which may govern the collection, use, disclosure, and protection of health-related and other personal information. California, for example, has enacted the Confidentiality of Medical Information Act, which sets forth standards in addition to HIPAA and HITECH with which all California health care providers like us must abide. State laws may be more stringent, broader in scope, or offer greater individual rights with respect to PHI than HIPAA, and state laws may differ from each other, which may complicate compliance efforts.

Entities that are found to be in violation of HIPAA as the result of a failure to secure PHI, a complaint about our privacy practices or an audit by HHS, may be subject to significant civil and criminal fines and penalties and additional reporting and oversight obligations if such entities are required to enter into a resolution agreement and corrective action plan with HHS to settle allegations of HIPAA non-compliance.

U.S. Healthcare Reform

In the United States, there have been a number of legislative and regulatory changes at the federal and state levels that seek to reduce healthcare costs and improve the quality of healthcare. For example, in March 2010, the Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act (the “ACA”), became law. This law substantially changed the way health care is financed by both commercial payors and government payors, and significantly impacts our industry. The ACA contains a number of provisions that are expected to impact the clinical laboratory industry, such as changes governing enrollment in state and federal health care programs, reimbursement changes, and fraud and abuse.

There have been executive, judicial and Congressional challenges and amendments to certain aspects of the ACA. For example, on July 4, 2025, the One Big Beautiful Bill Act (the “OBBBA”) was signed into law, which narrowed access to ACA marketplace exchange enrollment and declined to extend the ACA enhanced advanced premium tax credits that expired at the end of 2025, which, among other provisions in the law, are anticipated to reduce the number of Americans with health insurance. The OBBBA is also expected to reduce Medicaid spending and enrollment by implementing work requirements for some beneficiaries, capping state-directed payments, reducing federal funding, and limiting provider taxes used to fund the program. Congress is considering proposed legislation intended to further reduce healthcare costs with alternatives to replace the expired ACA subsidies. It is possible that the ACA will be subject to judicial or Congressional challenges in the future. It is unclear how any such challenges and the health reform measures of the current administration will impact the ACA.

Further on August 2, 2011, the Budget Control Act of 2011 was signed into law, which, among other things, reduced Medicare payments to providers by 2% per fiscal year, effective on April 1, 2013 and, due to subsequent legislative amendments to the statute, will remain until 2032, unless additional Congressional action is taken. On January 2, 2013, the American Taxpayer Relief Act of 2012 was signed into law, which, among other things, reduced Medicare payments to several providers, including hospitals, and increased the statute of limitations period for the government to recover overpayments to providers from three to five years. The Medicare Access and

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CHIP Reauthorization Act of 2015, enacted on April 16, 2015 (“MACRA”), repealed the formula by which Medicare made annual payment adjustments to physicians and replaced the former formula with fixed annual updates, and established a quality payment incentive program, also referred to as the Quality Payment Program. This program provides clinicians with two ways to participate, including through the Advanced Alternative Payment Models (“APMs”), and the Merit-based Incentive Payment System (“MIPS”). Under both APMs and MIPS, performance data collected each performance year will affect Medicare payments in later years, including potentially reducing payments.

In April 2014, Congress passed the Protecting Access to Medicare Act of 2014 (“PAMA”), which included substantial changes to the way in which clinical laboratory services are paid under Medicare. Under PAMA, laboratories that receive the majority of their Medicare revenue from payments made under the Physician Fee Schedule are required to report to CMS, beginning in 2017 and every three years thereafter (or annually for “advanced diagnostic laboratory tests”), private payor payment rates and volumes for their tests. CMS will use this data to calculate a weighted median payment rate for each test, which will be used to establish revised Medicare reimbursement rates for the tests. Laboratories that fail to report the required payment information may be subject to substantial civil monetary penalties. It is unclear what impact new quality and payment programs, such as MACRA, or new pricing structures, such as those adopted under PAMA, may have on our business, financial condition, results of operations, or cash flows.

In addition, the current administration is pursuing policies to reduce regulations and expenditures across government agencies including at HHS, the FDA, CMS and related agencies. These actions, presently directed by executive orders or memoranda from the Office of Management and Budget, may propose policy changes that create additional uncertainty for our business. Recent actions, for example, include directing agencies to reduce agency workforce and cut programs and imposing tariffs on imported products. Additionally, the current administration recently called on Congress to enact “The Great Healthcare Plan,” to codify and expand Most-Favored Nation pricing, lower government subsidies to private insurance companies, increase healthcare price transparency, and enact restrictions on pharmacy benefit manager payment methodologies, among other things. These actions and policies may significantly reduce U.S. prices for certain health care products and services, potentially impacting manufacturers’ global pricing strategies and profitability, while increasing their operational costs and compliance risks.

We also anticipate there will continue to be proposals by legislators at both the federal and state levels, regulators and private payors to reduce costs while expanding individual healthcare benefits. Certain of these changes could impose additional limitations on the prices we will be able to charge for our tests, the coverage of or the amounts of reimbursement available for our tests from payors, including commercial payors and government payors. Therefore, even if favorable coverage and reimbursement status is attained, less favorable coverage policies and reimbursement rates may be implemented in the future.

Human Capital

We recognize that our employees are both our most valuable asset and our most important investment. The success of our organization is reliant upon each individual’s significant contribution to our corporate culture and goals. Our core company values include striving to be:

Patient-centric

Teachers

Learners

Execution-oriented

Inclusive

At a foundational level, employees receive training related to workplace safety and emergency preparedness, awareness and expectations of inclusion, required data protection, and other regulatory matters. We offer competitive total rewards programs, ongoing training and development, and a commitment to the safety and health of our employees. We also practice a commitment to diversity by including broader outreach and sourcing for candidates for new roles as well as education and a visible commitment to diversity and inclusion internally.

An engaged workforce with skills specific to our needs is critical for our successful growth in a competitive market and sector. We regularly benchmark our compensation and benefits by geography, industry (life sciences), and by role to ensure we maintain our status as an employer of choice in these areas. Our turnover rates over the last three years have been consistent with such benchmarks. Reports of our position relative to the benchmarks are reported to management and the compensation committee of our board of directors on a periodic basis.

As of January 31, 2026, we had 260 employees, of which 259 were full-time employees. Of these full-time employees, 91 were in research and development, 73 in laboratory operations, 52 in commercial operations and 43 in general and administrative functions. 257 of our full-time employees were located in the United States, with the remaining two located in Europe (including the U.K.). As of January 31, 2026, more than 40% of our employees had completed a Ph.D. or other advanced science or medical degree.

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None of our employees are represented by a labor union or covered by collective bargaining agreements, and we have not experienced any labor work stoppages. We consider our relations with our employees to be good. The use of independent contractors is not a material part of our workforce strategy.

Environment

We are in compliance with the regulations established by the state of California Division of Occupational Safety and Health Requirements, and California Environmental Protection Agency applicable to our operations based in Fremont, California. This includes, but is not limited to, having an Injury and Illness Prevention Program, a Hazard Communication Program, an Emergency Action Plan, a Chemical Hygiene Plan, a Bloodborne Pathogens Program, and an Exposure Control Plan, which are captured in written standard operating procedures (“SOPs”). We provide training to our employees on these SOPs. We are committed to evaluating our compliance with such regulations on a recurring basis.

Available Information

Our website is located at https://www.personalis.com. Our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, including their exhibits, proxy and information statements, and amendments to those reports filed or furnished pursuant to Sections 13(a), 14, and 15(d) of the Securities Exchange Act of 1934, as amended, are available through the “Investors” portion of our website free of charge as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. We also use the investor relations page on our website as a channel of distribution for important company information, including press releases, analyst coverage and financial information regarding us, as well as corporate governance information. We also use our X (formerly Twitter) and LinkedIn accounts (@personalisinc and https://www.linkedin.com/company/personalis-inc/, respectively) and those of our Chief Executive Officer (@C_HallBiotech and https://www.linkedin.com/in/christopher-hall-a982a0/, respectively) as channels of distribution for important company information. Information on our website or our social media accounts is not part of this Annual Report on Form 10-K or any of our other securities filings unless specifically incorporated herein or therein by reference. In addition, our filings with the SEC may be accessed through the SEC’s Interactive Data Electronic Applications system at http://www.sec.gov. All statements made in any of our securities filings, including all forward-looking statements or information, are made as of the date of the document in which the statement is included, and we do not assume or undertake any obligation to update any of those statements or documents unless we are required to do so by law.

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Item 1A. Risk Factors.

Our operations and financial results are subject to various risks and uncertainties including those described below. You should consider carefully the risks and uncertainties described below, in addition to other information contained in this Annual Report on Form 10-K, including our audited consolidated financial statements and related notes. The risks and uncertainties described below are not the only ones we face. Additional risks and uncertainties that we are unaware of, or that we currently believe are not material, may also become important factors that adversely affect our business. If any of the following risks or others not specified below materialize, our business, financial condition, and results of operations could be materially and adversely affected. In that case, the trading price of our common stock could decline.

Operational, Strategic and Business Risks

We have a history of losses and we expect to incur significant losses for the foreseeable future and may not be able to generate sufficient revenue to achieve or sustain profitability.

We have incurred net losses since our inception. For each of the years ended December 31, 2025 and 2024, we had a net loss of $81.3 million. As of December 31, 2025, we had an accumulated deficit of $631.3 million. To date, we have not generated sufficient revenue to achieve profitability, and we may never achieve or sustain profitability. In addition, we expect to continue to incur net losses for the foreseeable future, and we expect our accumulated deficit to continue to increase as we focus on scaling our business and operations. Our efforts to sustain and grow our business may be more costly than we expect, and we may not be able to increase our revenue sufficiently to offset our higher operating expenses. Our prior losses and expected future losses have had and will continue to have an adverse effect on our stockholders’ equity and working capital. Our failure to achieve and sustain profitability in the future would negatively affect our business, financial condition, results of operations, and cash flows, and could cause the market price of our common stock to decline.

If we are unable to increase sales of our current services or successfully develop and commercialize other services, or if we are unable to execute our sales and marketing strategy for our testing services or unable to gain sufficient acceptance in the market, or if we are unable to generate sufficient reimbursement or coverage by insurance or governmental payors for our testing services, we may fail to generate sufficient revenue to achieve profitability and sustain our business.

We currently derive substantially all of our revenue from sales of our testing services. We began offering our testing services through our CLIA-certified, CAP-accredited, and state-licensed laboratory in 2013. We are in varying stages of research and development for other services that we may offer. If we are unable to increase sales of our existing services or successfully develop and commercialize other services, we will not generate sufficient revenue to become profitable.

In addition, as a growing genomics company, we have engaged in targeted sales and marketing activities for our testing services. Although we have had revenue from sales of our testing services since 2013, our testing services may never gain significant acceptance in the marketplace and therefore may never generate substantial revenue or permit us to become profitable. We will need to further establish and grow the market for our testing services through the expansion of our current relationships and development of new relationships with biopharmaceutical customers and through gaining acceptance in medical communities. Gaining acceptance in medical communities can be supported by, among other things, publications in leading peer-reviewed journals of results from studies using our testing services. The process of publication in leading medical journals is subject to a peer review process and peer reviewers may not consider the results of our studies sufficiently novel or worthy of publication. Failure to have our studies published in peer-reviewed journals would limit the adoption of our testing services.

Our ability to successfully market our testing services that we have developed, and may develop in the future, will depend on numerous factors, including:

generation of sufficient reimbursement or coverage by insurance or governmental payors for our testing services;

our ability to demonstrate the utility and value of our testing services to our customers and potential customers;

the success of our commercial team, including sales and business development personnel;

the recruitment, hiring, and retention of our commercial team personnel;

whether our customers and potential customers accept that our testing services are sufficiently sensitive and specific;

our ability to educate our customers and potential customers of the utility of the comprehensiveness of our testing services and of testing patients at multiple time points;

our ability to continue to fund sales and marketing activities;

whether our testing services are considered superior to those of our competitors;

any negative publicity regarding our or our competitors’ services resulting from defects or errors;

our success obtaining and maintaining patent and trade secret protection for our testing services and technologies; and

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our success enforcing and defending intellectual property rights and claims.

Failure to achieve broad market acceptance of our testing services would materially harm our business, financial condition, and results of operations.

If we cannot compete successfully with our competitors, we may be unable to increase or sustain our revenue or achieve and sustain profitability.

Our principal competition comes from commercial and academic organizations that employ various approaches to produce information that is similar to the information that we generate for our customers. These commercial and academic organizations may not utilize our testing services or may not believe them to be superior to those tests that they currently use or others that are developed. Further, it may be difficult to educate our customers and potential customers on the benefits of our comprehensive tests compared to simpler panels provided by our competitors. For example, the information that we provide may be more challenging or require additional resources for our customers to interpret than the information provided by our competitors’ less comprehensive assays. In addition, our suppliers or competitors may announce the development of new products, services or features that results in our customers’ or potential customers’ decision to reduce, postpone or cancel orders from us while they wait to determine which products, services or features are or will be perceived as technologically superior, more commercially successful or adopted as standards in the industry; such decisions by our customers or potential customers may be influenced by their concerns regarding the potential obsolescence of data generated using our testing services and features if our testing services or features are or will not be perceived as technologically superior, commercially successful or adopted as standards in the industry.

Some of our present or potential competitors, including Adela, Inc., Caris Life Sciences, Inc., DELFI Diagnostics, Inc., Exact Sciences Corporation, which it is expected to be acquired by Abbott Laboratories, Inc., in the second quarter of 2026, Foresight, which was acquired by Natera in December 2025, Foundation Medicine Inc., GRAIL, Inc., Guardant Health, Inc., Haystack Oncology, Inc., which was acquired by Quest Diagnostics Incorporated in June 2023, Laboratory Corporation of America Holdings, MedGenome Inc., Myriad, Natera, NeoGenomics, Inc., Predicine, Inc., SAGA Diagnostics AB, and Veracyte, Inc. may have more widespread brand recognition or substantially greater financial or technical resources, development or production capacities, or marketing capabilities than we do. They may be able to devote greater resources to the development, promotion and sale of their products and services than we do or sell their products and services at prices designed to win more significant levels of market share. Also, we have had, and may have in the future, customer or supply relationships with our present or potential competitors. For example, we have an agreement with Natera to provide advanced tumor analysis for use in Natera’s MRD test. During the year ended December 31, 2025, revenue under our agreement accounted for 8% of our total revenue. See “—We have historically derived a substantial portion of our revenue from DNA sequencing and data analysis services provided to Natera. We no longer have a material commercial relationship with Natera and if we are unable to grow our customer base and diversify our revenue concentration, our business, financial condition, revenue and other operating results, and cash flows may be materially harmed.” Further, we have partnered with Tempus to expand the sales and marketing of our NeXT Personal Dx tests in four indications and Tempus could in the future develop tests that compete directly or indirectly with our tests or partner with our competitors. If Tempus were to develop competitive tests or partner with our competitors, we or Tempus may terminate the agreement and, upon termination of the agreement, we may be unable to expand our sales force timely to replace the Tempus sales and marketing efforts, which could adversely impact our business or affect our ability to commercialize our testing services. In addition, our present or potential competitors have been or may be acquired by, receive investments from, or enter into other commercial relationships with larger, more well-established and well-financed companies. We may also have disputes with our present or potential competitors. See “—Litigation or other proceedings or third-party claims of intellectual property infringement, misappropriation or other violations may require us to spend significant time and money, and could in the future prevent us from selling our tests or impact our stock price, any of which could have a material adverse effect.”

Others may develop lower-priced, less complex products and services that pharmaceutical companies could view as functionally equivalent to our current or planned future services, and our competitors may develop services with the same attributes and features as our testing services, which could force us to lower the price of our testing services and impact our operating margins and our ability to achieve and maintain profitability. In addition, companies or governments that control access to genetic testing and related services through umbrella contracts or regional preferences could promote our competitors or prevent us from performing certain services. In addition, technological innovations that result in the creation of enhanced services or diagnostic tools that are more sensitive or specific than ours may enable other clinical laboratories, hospitals, physicians, or medical providers to provide specialized services similar to ours in a more patient-friendly, efficient, or cost-effective manner than is currently possible. If we cannot compete successfully against current or future competitors, or if we cannot maintain successful customer or supply relationships with Moderna, Illumina or other present or potential competitors, we may be unable to ensure or increase market acceptance and sales of our current or planned future services, which could prevent us from increasing or sustaining our revenue or achieving or sustaining profitability.

We expect that biopharmaceutical companies will increasingly focus attention and resources on the targeted and personalized cancer diagnostic sector as the potential and prevalence of molecularly targeted oncology therapies approved by the FDA along with companion diagnostics increases. For example, the FDA has approved several such targeted oncology therapies that use companion diagnostics, including the anaplastic lymphoma kinase FISH test from Abbott Laboratories, Inc. for use with Xalkori® from Pfizer Inc., the BRAF kinase V600 mutation test from Roche Molecular Systems, Inc. for use with Zelboraf® from Daiichi-Sankyo/Genentech/Roche, and the BRAF kinase V600 mutation test from bioMerieux for use with Tafinlar® from GlaxoSmithKline. Since companion diagnostic tests are part of FDA labeling, non-FDA cleared tests, such as the ones we currently offer as part of our testing services, would be considered an off-label use and this may limit our access to this market segment. Our customers and potential customers may request, or in some cases

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have requested, that we consider developing and seeking FDA approval for companion diagnostic tests to accompany those customers’ therapeutic product candidates, and it may be necessary for us to do so in order to successfully compete for the business of these customers. If we do not successfully develop FDA-approved companion diagnostics, we may be at a competitive disadvantage and may be unable to increase market acceptance and sales of our other service or product offerings, which would prevent us from increasing or sustaining our revenue or achieving or sustaining profitability. If we were to develop one or more FDA-approved companion diagnostics, we would incur increased research and development expenses, and such activities may also divert our resources or the attention of our management and may create competing internal priorities for us. In addition, we have limited experience developing diagnostics, have never developed an FDA-approved companion diagnostic, and may be unable to successfully compete against companies with more experience developing and commercializing companion diagnostics.

Additionally, projects related to cancer diagnostics and particularly genomics have in the past received, and may in the future receive, increased government funding, both in the United States of America (the “U.S.”) and internationally. As more information regarding cancer genomics becomes available to the public, we anticipate that more products and services aimed at identifying treatment options will be developed and that these products and services may compete with our testing services. In addition, competitors may develop their own versions of our current or planned future services in countries where we did not apply for or receive patents and compete with us in those countries, including encouraging the use of their products or services by biopharmaceutical companies in other countries.

We have substantial customer concentration, with a limited number of customers accounting for a substantial portion of our revenue and accounts receivable; in particular, we currently derive a substantial portion of our revenue from two of our largest customers, Moderna and the VA MVP, and in the past have derived a substantial portion of our revenue from other large customers.

Like other genomic profiling companies that sell to the pharmaceutical industry, we have substantial customer concentration. We currently derive a significant portion of our revenue from Moderna, which accounted for 22% and 28% of our revenue for the years ended December 31, 2025 and 2024, respectively. We also derive a significant portion of our revenue from the VA MVP, which accounted for 17% and 9% of our revenue for the years ended December 31, 2025 and 2024, respectively. We previously derived a significant portion of our revenue from Natera, which accounted for 8% and 30% of our revenue for the years ended December 31, 2025 and 2024, respectively. Our top five customers, including Moderna, the VA MVP and Natera, accounted for 62% and 81% of our revenue for the years ended December 31, 2025 and 2024, respectively. There are inherent risks whenever a large percentage of revenue is concentrated with a limited number of customers. While we have attempted to grow our customer base and diversify our revenue concentration beyond Moderna, the VA MVP and Natera, we may not be able to successfully do so in the future. Our predictions regarding the future level of demand for our testing services that will be generated by these customers may be wrong. In addition, revenue from our larger customers have historically fluctuated and may continue to fluctuate based on the commencement and completion of clinical trials or other projects, the timing of which may be affected by market conditions or other factors, some of which may be outside of our control. Some of our customers have in the past suspended or terminated clinical trials or projects, received less funding than expected, experienced declining or delayed sales, or otherwise decided to reduce or eliminate their use of our testing services, and these and other customers may also do so in the future. As a result, we could be pressured to reduce the prices we charge for our testing services, which would have an adverse effect on our margins and financial position, and which would likely negatively affect our revenue and results of operations. In particular, if we do not win future VA MVP renewals with a value comparable to that of our historical contracted orders, it may have a material adverse effect on our revenue, cash position, and results of operations. See “—We derive a substantial portion of our revenue from DNA sequencing and data analysis services that we provide to one of our largest customers, the VA MVP. If the VA MVP’s demand for and/or funding for our DNA sequencing and data analysis services continues to be substantially reduced, or if our new contract with the VA MVP were to be terminated, our business, financial condition, revenue and other operating results, and cash flows will be materially harmed.” Similarly, if the VA MVP was eliminated, awarded its contract to one of our competitors, further reduced the size of our contract or failed to renew our contract in the future, then our revenue, cash position, and results of operations would be materially adversely impacted. Likewise, if Moderna or any of our other significant customers were to reduce or cease their use of our testing services, then our revenue, cash position, and results of operations may be materially adversely impacted. Further, if any of our significant customers were to stop payment for our testing services, it would have a material adverse effect on our accounts receivable, increasing our credit risk. The failure of these customers to pay their balances, or any customer to pay future outstanding balances, would result in an operating expense and reduce our cash flows.

We have historically derived a substantial portion of our revenue from DNA sequencing and data analysis services provided to Natera. We no longer have a material commercial relationship with Natera and, if we are unable to grow our customer base and diversify our revenue concentration, our business, financial condition, revenue and other operating results, and cash flows may be materially harmed.

In February 2021, we entered into a partnership in the field of personalized oncology with Natera, pairing our NeXT tumor profiling and diagnostic services with Natera’s personalized ctDNA test SignateraTM for treatment monitoring and MRD assessment. Under this non-exclusive agreement, Natera is responsible for validating the design of, and commercialization of, Signatera personalized ctDNA assays using matched tumor and normal exome sequence data from us. The agreement covers MRD testing for both clinical use and research use. Since that time, Natera’s sample volumes have increased such that we currently derive a significant portion of our revenue from sales of our DNA sequencing and data analysis services to Natera under our agreement. For example, revenue under our agreement with Natera accounted for 30% of our total revenue for the year ended December 31, 2024 and only 8% of our total revenue for the year ended December 31, 2025. In December 2024, we amended our agreement with Natera to extend minimum volume

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commitments through the second quarter of 2025, after which such commitments expired and were not renewed. We no longer have a material commercial relationship with Natera and do not expect to have one going forward, as we are aware that Natera brought such services in-house in lieu of purchasing such services from us. We are also aware of at least one third party supplier of DNA sequencing and analysis services, such that Natera has elected, and may continue to elect in the future, to send a portion (or all) of its samples to its other supplier(s) instead of us, which it is not contractually prohibited from doing, given the non-exclusive nature of our agreement.

Additionally, Natera or other customers may allege that any failures to achieve the required metrics are a breach of our agreement and seek to terminate our agreement prior to its expiration and/or pursue any remedies available to it under the agreement, at law or in equity. Relatedly, we have incurred expenses in connection with our scale-up activities under our agreement with Natera, and we may incur additional expenses in the future to increase our laboratory’s capacity to process increased sample volumes from our other customers. Our activities under our agreement with Natera have had, and activities with our other customers may in the future have, an impact on our business, including diversion of our resources and the attention of our management, including with respect to our internal research and development objectives and projects for our other customers, collaborators and/or partners. If we are unable to successfully increase our laboratory’s capacity and manage any such competing objectives and/or projects for other customers, we may be unable to meet the quality and timing requirements of our agreement with Natera or our other customers, collaborators and/or partners. We may also be unable to successfully research, develop, launch and/or commercialize our testing services or service capabilities. Furthermore, our NeXT Personal test is a next-generation, tumor-informed liquid biopsy assay designed to detect and quantify MRD and recurrence in patients previously diagnosed with cancer. If NeXT Personal or any of our other services is seen as competing with Signatera or any of Natera’s other services, we will still be required to fulfill our obligations to Natera under our agreement, although Natera may elect to send a portion (or all) of its samples to its other supplier(s) and/or bring such services in-house. If the volume of samples received under our agreement with Natera were to be significantly reduced or eliminated, or if our agreement with Natera were to be terminated or not renewed after expiration, and we are unable to grow our customer base and diversify our revenue concentration timely, our business, financial condition, revenue and other operating results, and cash flows may be materially harmed.

We derive a substantial portion of our revenue from DNA sequencing and data analysis services that we provide to one of our largest customers, the VA MVP. If the VA MVP’s demand for and/or funding for our DNA sequencing and data analysis services continues to be substantially reduced, or if our new contract with the VA MVP were to be terminated, our business, financial condition, revenue and other operating results, and cash flows will be materially harmed.

We derive a substantial portion of our revenue from sales of our DNA sequencing and data analysis services to the VA MVP. In September 2017, we entered into a one-year contract with three one-year optional renewal periods with the VA for the VA MVP, pursuant to which we received contracted orders from the VA MVP in September 2017, 2018, 2019, 2020, and 2021. In September 2022, we entered into a new contract with the VA MVP to continue providing them WGS services and received an initial task order with a value of up to $10.0 million (the "2022 VA MVP Agreement"). The performance period under the new contract includes a base period of one year, with four one-year renewal option periods that may be exercised upon discretion of the VA MVP. In August 2025, we received a fourth task order with a value of up to $13.5 million. There is no guarantee that the VA MVP will exercise any subsequent renewal option.

The VA MVP’s contracted orders for DNA sequencing and data analysis services have fluctuated significantly in value over time and are subject to the availability of funding, enrollment of veterans in the VA MVP study, and the VA MVP’s continued demand, if any, for our testing services among other factors. For example, the VA MVP contracted order received in September 2020 had a value of $30.9 million, whereas annual orders (other than 2025) received in subsequent years had values of $10.0 million, or less, which represents a substantial decline. We have no certainty that funding will be made available for our testing services, or that the VA MVP will honor its payment obligations under the current contract and task order, or award any future contracts, contract renewals or contracted orders to us. The priorities of the VA, the VA MVP, or the U.S. government may change, including in response to a health epidemic pandemic, or federal cost-cutting initiatives such as those recently announced and enacted by the current administration. Future task orders from the VA MVP for our DNA sequencing and data analysis services may be reduced or eliminated as a result of reductions in government research spending and federal cost-cutting initiatives. For example, funding for our testing services may be limited or not available, and our business, financial condition, and operating results and cash flows will be materially harmed. Similarly, if we do not win future VA MVP contracts and renewals (whether due to being outbid by a competitor or the VA MVP’s decision not to award a future contract on a timely basis or at all, or to terminate for convenience or failure to renew any contract, for whatever reason) with a value comparable to that of our historical contracted orders, our business, financial condition, revenue and other operating results and cash flows may be materially harmed.

We have only recognized revenue under our VA MVP contract upon the receipt and processing of samples, and the timing and number of VA MVP samples we have received has been and could in the future be negatively affected by factors beyond our control, which has resulted, and may result in the future, in delaying our ability to process and recognize revenue for such samples. For example, the revenue we recognized during the contract year that began in September 2020 significantly exceeded the value of the VA MVP contracted order we received in September 2020 because we continued to receive after such date, and subsequently processed, samples under VA MVP contracted orders that remained unfulfilled as of September 2020 due to the time required for the VA to select optimal samples from its collection for research and then provide us those samples. Therefore, period-to-period comparisons of our operating results relating to VA MVP contracted orders may not be meaningful. The timing and number of VA MVP samples may also be negatively affected by a public health crisis. For example, in March 2020, the VA MVP announced that it was suspending sample collection due to the COVID-19 pandemic. In addition, we believe the COVID-19 pandemic may have been a contributing factor to the reduction in values of contracted orders received in 2021 and later years compared to the September 2020 contract order, as the VA MVP delayed new

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enrollment and also may have needed to divert resources to respond to the pandemic. Another health epidemic or pandemic may negatively impact the value of any potential new VA MVP contract or order.

If we cannot maintain our current customer relationships, or fail to acquire new customers, our revenue prospects will be reduced. Many of our customers are biopharmaceutical companies engaged in clinical trials of new drug candidates, which trials are expensive, can take many years to complete, and have inherently uncertain outcomes.

Our corporate customers, other than Natera, are primarily biopharmaceutical companies that use our testing services to support clinical trials, including Moderna. Our future success is substantially dependent on our ability to maintain our customer relationships and to establish new ones. Many factors have the potential to impact our customer relationships, including the type of support our customers and potential customers require and our ability to deliver it, our customers’ satisfaction with our testing services, and other factors that may be beyond our control. Furthermore, our customers may decide to decrease or discontinue their use of our testing services due to changes in research and product development plans (including as a result of a public health crisis), failures in their clinical trials (which failures are statistically much more likely to occur than not at some point in the clinical development process, notwithstanding any enhanced patient stratification from the use of our proprietary tests and algorithms), financial constraints, or utilization of internal testing resources or tests performed by other parties, or other circumstances outside of our control.

We engage in conversations with corporate customers regarding potential commercial opportunities on an ongoing basis in the event that one of these customers’ drug candidates is approved. There is no assurance that any of these conversations will result in a commercial agreement, or if an agreement is reached, that the resulting relationship will be successful or that clinical studies conducted as part of the engagement will produce successful outcomes. Speculation in the industry about our existing or potential relationships with biopharmaceutical companies could be a catalyst for adverse speculation about us, our testing services, and our technology, which can adversely affect our reputation and our business. In addition, the termination of these relationships could result in a temporary or permanent loss of revenue.

Our corporate customers’ clinical trials are expensive, can take many years to complete, and their outcome is inherently uncertain. Failure can occur at any time during the clinical trial process. Product candidates in later stages of clinical trials may fail to show the desired safety and efficacy traits despite having progressed through pre-clinical studies and early clinical trials. Many of the biopharmaceutical companies that are our customers do not have products approved for commercial sale and are not profitable. These customers must continue to raise capital in order to continue their development programs and to potentially continue as our customers. If our customers’ clinical trials fail or they are unable to raise sufficient capital to continue investing in their clinical programs, our revenue from these customers may decrease or cease entirely, and our business may be harmed. Furthermore, even if these customers have a drug approved for commercial sale, they may not choose to use our testing services as a companion diagnostic with their drug or they may impose additional customization requirements for commercialization, thereby limiting our potential revenue and profits.

Building our clinical laboratory business is subject to a number of reimbursement challenges and we may not be able to establish the medical necessity of our tests for coverage or reimbursement rates that cover our costs.

The coverage and reimbursement status of newly-approved or cleared laboratory developed tests, including our NeXT Dx and NeXT Personal Dx testing services, is uncertain. We are seeking reimbursement for our NeXT Dx and NeXT Personal Dx tests, and other in vitro diagnostic tests we may develop, and if such tests are inadequately covered by insurance or ineligible for such reimbursement, this could limit our ability to derive revenue from any such current or future tests. The commercial success of current or future services in both domestic and international markets may depend in part on the availability of coverage and adequate reimbursement from third-party payors, including government payors, such as the Medicare and Medicaid programs, or equivalent foreign programs, managed care organizations, and other third-party payors. The government and other third-party payors are increasingly attempting to contain health care costs by limiting both insurance coverage and the level of reimbursement for new diagnostic tests. As a result, they may not cover or provide adequate payment for any current or future in vitro diagnostic tests that we develop. These payors may conclude that our testing services are not medically necessary, or are less safe, less effective, or less cost-effective than existing or later-introduced services. These payors may also conclude that the overall cost of using one of our tests exceeds the overall cost of using a competing test, and third-party payors may not approve any current or future in vitro diagnostic tests we develop for insurance coverage and adequate reimbursement.

In January 2024, we announced that we received a final Medicare coverage determination for our NeXT Dx offering, extended retroactively to August 29, 2023. In November 2025, we announced that we received Medicare coverage for NeXT Personal Dx for post-treatment surveillance of cancer recurrence in patients with Stage II and III breast cancer, with an effective date of October 7, 2025. In February 2026, we also announced that we received Medicare coverage for NeXT Personal Dx for surveillance of patients with Stage I to III NSCLC with an effective date of January 9, 2026. While we estimate that approximately half of new solid tumor cancer cases will be diagnosed in patients covered by Medicare, the Medicare coverage determination may not be indicative of our ability to obtain coverage with other payors. Even if favorable coverage and reimbursement status is attained for one or more of our testing services, less favorable coverage policies and reimbursement rates may be implemented in the future.

We are pursuing a partner-centric strategy and have key relationships with Tempus, Myriad, Moderna and Merck, among others. These and any other partnering and/or collaboration arrangements that we have entered into or may

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enter into in the future may not be successful, or may terminate, which could adversely impact our business or affect our ability to develop and commercialize our testing services.

Any current or future collaborations, including any strategic alliances or any collaborations to develop companion diagnostic tests, that we have entered (for example, our strategic alliances with Moderna and Merck; and our collaborations with Tempus; Myriad; ClearNote Health, Inc.; Cancer Research UK, University College London, and the Francis Crick Institute (the TRACERx study); Institut Curie; The Royal Marsden; the Vall d'Hebron Institute of Oncology (VHIO); the University of California, San Diego; Duke University; Vanderbilt University and Johns Hopkins University (the PREDICT study); the Dana-Farber Cancer Institute; the University of Texas M.D. Anderson Cancer Center; University Medical Center Hamburg-Eppendorf (also known as UKE); Criterium and the Academic Breast Cancer Consortium; Yale Cancer Center; Aarhus University; British Columbia Cancer; and University Health Network, or may enter into may not be successful. The success of our collaboration arrangements will depend heavily on the efforts and activities of our collaborators. Collaborations are subject to numerous risks, which include that:

we may incur increased research and development expenses, and such activities may also divert management attention and resources and/or create competing internal priorities for us, which could prevent us from successfully conducting other parts of our business or collaborating with others;

collaborators have significant discretion in determining the efforts and resources that they will apply to collaborations;

collaborators may not pursue development and commercialization of our testing services or may elect not to continue or renew development or commercialization programs based on trial or test results, changes in their strategic focus due to the acquisition of competitive services or products, availability of funding, or other external factors, such as a business combination that diverts resources or creates competing priorities for our collaborator;

collaborators could independently develop, or develop with third parties, services that compete directly or indirectly with our testing services;

collaborators with marketing, manufacturing, and distribution rights to one or more services or products may not commit sufficient resources to or otherwise not perform satisfactorily in carrying out these activities;

we could grant exclusive rights to our collaborators that would prevent us from collaborating with others;

a large percentage of our revenue may be concentrated with the collaborators if the collaborations are successful and we may experience further losses if they are or later become unsuccessful;

collaborators may not properly maintain or defend our intellectual property rights or may use our intellectual property or proprietary information in a way that gives rise to actual or threatened litigation that could jeopardize or invalidate our intellectual property or proprietary information or expose us to potential liability;

disputes may arise between us and a collaborator that causes the delay or termination of the research, development, or commercialization of our current or future services or that results in costly litigation or arbitration that diverts management attention and resources;

collaborations may be terminated, and, if terminated, may result in a need for additional capital to pursue further development or commercialization of the applicable current or future services;

collaborators may own or co-own intellectual property covering our testing services that results from our collaborating with them, and in such cases, we would not have the exclusive right to develop or commercialize such intellectual property;

collaborators’ activities or use of our testing services or deliverables may create additional regulatory obligations and could lead to side effects or adverse events in patients, exposing us to potential liability or regulatory review;

collaborators’ sales and marketing activities or other operations may not be in compliance with applicable laws resulting in civil or criminal proceedings; and

we may choose or our collaborators may request or require us to expand our facilities and/or establish new facilities domestically and/or internationally, which may significantly increase our expenses and divert resources and management’s attention. See “—We may need to continue to invest in our infrastructure in advance of increased demand for our testing services; our failure to accurately forecast demand would have a negative impact on our business and our ability to achieve and sustain profitability.” and “—Expansion into international markets would subject us to increased regulatory oversight and regulatory, economic, social, health and political uncertainties, which could cause a material adverse effect on our business, financial position, and results of operations.”

If we are unable to successfully obtain rights to required third-party intellectual property rights or maintain the existing intellectual property rights we have, we may have to abandon development of that program and our business and financial condition could suffer.

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We rely on a limited number of suppliers, or in some cases, a sole supplier, for some of our laboratory instruments and materials, and we may not be able to find replacements or immediately transition to alternative suppliers should we need to do so.

We rely on a limited number of suppliers for sequencers and other equipment and materials that we use in our laboratory operations. For example, we rely on Illumina as our sole supplier of sequencers and various associated reagents and other materials used in our routine laboratory operations, and as the sole provider of maintenance and repair services for these sequencers. Any disruption in Illumina’s operations or our inability to negotiate pricing with Illumina on acceptable terms, or at all, could negatively impact our supply chain and laboratory operations and our ability to conduct our business and generate revenue. Additionally, COVID-19 previously disrupted Illumina’s ability to fulfill our purchase orders for reagents or other materials in a timely manner and another health epidemic or pandemic may disrupt the ability of Illumina and our other suppliers to fulfill our purchase orders in a timely manner or at all. Our suppliers, including Illumina, could cease supplying these materials and equipment at any time, could increase the price of these materials or equipment (including the promotional pricing offered to us by Illumina for our 2022 VA MVP Agreement and certain other projects) or fail to provide us with sufficient quantities of materials or equipment that meet our specifications. Our laboratory operations have been and in the future could be interrupted if we encounter delays or difficulties in securing sequencers or other equipment or materials, or if we cannot obtain an acceptable substitute. We have also experienced, and may experience in the future, delays or difficulties in upgrading to newer versions or replacements of these materials and equipment, which may have better performance or be more cost-effective than the current versions. Any such interruption, delay or difficulty could significantly affect our business, financial condition, results of operations, and reputation.

We believe that there are only a few manufacturers other than Illumina that are currently capable of supplying and servicing the equipment necessary for our laboratory operations, including sequencers and various associated reagents. Likewise, we believe that there are a limited number of manufacturers and suppliers for other reagents and materials necessary for our laboratory operations, such as the sample preparation reagents required for our ACE technology, which enables our NeXT Platform to provide more comprehensive sequencing coverage, as well as those required to create personalized liquid biopsy panels for each patient as part of our NeXT Personal assay. Although we have evaluated and may continue in the future to evaluate equipment and materials from other suppliers, the use of equipment or materials provided by these replacement suppliers would require us to alter our laboratory operations. Transitioning to a new supplier would be time-consuming and expensive, would likely result in interruptions in our laboratory operations, could affect the performance specifications of our laboratory operations, or could require that we revalidate our tests. Additionally, an existing supplier of ours may allege that such activities constitute a breach of its agreement with us and may cease supplying us with sufficient quantities of materials or equipment that meet our specifications, in a timely manner or at all. Moreover, an existing supplier or third party may allege that such activities, replacement equipment or materials infringe, misappropriate or otherwise violate its intellectual property, and may bring infringement or other intellectual property-related claims against us. See “—Litigation or other proceedings or third-party claims of intellectual property infringement, misappropriation or other violations may require us to spend significant time and money, and could in the future prevent us from selling our tests or impact our stock price, any of which could have a material adverse effect.” We cannot assure you that, if we were forced to replace Illumina or another supplier on which we rely, we would be able to secure alternative equipment, reagents, and other materials, and bring such equipment, reagents, and other materials on-line and revalidate them without experiencing interruptions in our workflow. If we encounter delays or difficulties in securing, reconfiguring, or revalidating the equipment and reagents we require for our testing services, our business, financial condition, results of operations, and reputation could be adversely affected.

In addition, the Device Master Files that we filed with the FDA, which are focused on the technology, quality management, and validation of our platform, specifically on its use for the development of personalized immunotherapies, are predicated on our use of specified equipment and processes, including Illumina sequencers and related equipment. The detailed information in the Device Master Files is not shared with our customers, but with our permission they can reference our FDA file numbers in their Investigational New Drug filings with the FDA. If we were required to transition to a new supplier of sequencers or certain other equipment or processes in our laboratory, our Device Master Files would need to be replaced or updated, and until such time as that occurred, customers for which we deliver services after the transition would not be able to reference our Device Master Files, which would cause us to lose a competitive advantage.

International trade policies, including tariffs, sanctions and trade barriers may adversely affect our business, financial condition, results of operations and prospects.

We operate in a global economy, which includes partners and suppliers in certain countries outside the United States. There is inherent risk, based on the complex relationships among the U.S. and the countries in which our partners and suppliers reside, that political, diplomatic, and national security factors can lead to global trade restrictions and changes in trade policies and export regulations that may adversely affect our business and operations. The current international trade and regulatory environment is subject to significant ongoing uncertainty. The U.S. government has announced substantial new tariffs affecting a wide range of products and jurisdictions and has indicated an intention to continue developing new trade policies, including with respect to the pharmaceutical industry. In response, certain foreign governments have announced or implemented retaliatory tariffs and other protectionist measures. These developments have created a dynamic and unpredictable trade landscape, which may adversely impact our business, results of operations, financial condition and prospects.

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We do not own or operate, and currently have no plans to establish, any manufacturing facilities. We currently rely, and expect to continue to rely, on third parties for the manufacture of the specialized laboratory equipment, raw materials and other supplies we use in our business. Currently, certain of our direct suppliers are located outside of the United States. In addition, our suppliers in the United States source or may source components of the products we purchase from them from sources outside the United States. Current or new tariffs may adversely impact our supply chain.

Unlike many industries, our ability to pass increased costs to customers is limited by the structure of reimbursement systems and, if the FDA determines our tests are subject to enforcement as medical devices, medical device pricing. The pricing of many of our testing services are, or will be, established through annual or multi-year contracts with commercial, third-party payors, customers, and group purchasing organizations, and reimbursement methodologies established by government programs, such as Medicare. These arrangements typically include fixed pricing terms that may be negotiated prior to the implementation of the recently announced tariffs. As a result, and depending on the timing and scope of the implementation of these tariffs, cost increases due to tariffs may be difficult or impossible to pass through to customers until the next negotiation cycle, which could be years away.

Current or future tariffs may also result in increased research and development expenses, including with respect to increased costs associated with raw materials, laboratory equipment and research materials and components. Trade restrictions affecting the import of materials necessary for our tests could result in increased costs to process tests and delays to delivery of our testing services. Increased costs and extended delivery timelines could place us at a competitive disadvantage compared to companies operating in regions with more favorable trade relationships and could reduce investor confidence and negatively impact our business, results of operations, financial condition and growth prospects.

The complexity of announced or future tariffs may also increase the risk that we or our customers or suppliers may be subject to civil or criminal enforcement actions in the United States or foreign jurisdictions related to compliance with trade regulations. Foreign governments may also adopt non-tariff measures, such as procurement preferences or informal disincentives to engage with, purchase from or invest in U.S. entities, which may limit our ability to compete internationally and attract non-U.S. investment, employees, customers and suppliers. Foreign governments may also take other retaliatory actions against U.S. entities, such as decreased intellectual property protection, increased enforcement actions, or delays in regulatory approvals, which may result in heightened international legal and operational risks. In addition, the United States and other governments have imposed and may continue to impose additional sanctions, such as trade restrictions or trade barriers, which could restrict us from doing business directly or indirectly in or with certain countries or parties and may impose additional costs and complexity to our business.

Trade disputes, tariffs, restrictions and other political tensions between the United States and other countries may also exacerbate unfavorable macroeconomic conditions including inflationary pressures, foreign exchange volatility, financial market instability, and economic recessions or downturns. The ultimate impact of current or future tariffs and trade restrictions remains uncertain and could materially and adversely affect our business, financial condition, and prospects. While we actively monitor these risks, any prolonged economic downturn, escalation in trade tensions, or deterioration in international perception of U.S.-based companies could materially and adversely affect our business, ability to access the capital markets or other financing sources, results of operations, financial condition and prospects. In addition, tariffs and other trade developments have and may continue to heighten the risks related to the other risk factors described elsewhere in this report.

We have a single facility and if it becomes damaged or inoperable, or we are required to vacate our facility, our ability to sell and provide our testing services and pursue research and development efforts may be jeopardized.

We currently derive our revenue from our genomic analysis conducted in our laboratories. Currently, our only clinical reference or research and development laboratory facility is in Fremont, California. Our laboratory facility and equipment could be harmed or rendered inoperable by natural or man-made disasters, including fires, earthquakes, flooding, and power outages, which may render it difficult or impossible for us to sell or perform our testing services for some period of time. Northern California continues to experience serious fires and the San Francisco Bay Area is considered to lie in an area with earthquake risk. The inability to sell or to perform our sequencing and analysis services, disruptions in our operations, or the backlog of samples that could develop if our laboratory facility is inoperable for even a short period of time, may result in the loss of customers or harm to our reputation or relationships with scientific or clinical collaborators, and we may be unable to regain those customers or repair our reputation or such relationships in the future. For example, from January 2023 through April 2023, we experienced substantial disruption to use of our laboratory facility due to a failure of an electrical bus duct serving that facility. Furthermore, our laboratory facility and the equipment we use to perform our testing services and our research and development work could be costly and time-consuming to repair or replace.

Additionally, a key component of our research and development process involves using biological samples as the basis for the development of our testing services, and our testing services typically involve using biological samples provided by or on behalf of our customers or collaborators. In some cases, these samples are difficult to obtain. If the parts of our laboratory facility where we store these biological samples were damaged or compromised, or if these biological samples or the resulting data were otherwise lost, damaged or compromised due to equipment malfunction, human error or other causes, our ability to pursue our research and development projects or provide our testing services, as well as our reputation, could be jeopardized. For example, we have experienced from time to time, and may experience in the future, equipment malfunctions that have resulted in lost, damaged or compromised samples or resulting data. We carry insurance for damage to our property or to our customer's property while in our possession, and we also carry insurance for the

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disruption of our business, but these types of insurance may not be sufficient to cover all of our potential losses or liabilities and may not continue to be available to us on acceptable terms, if at all.

Further, if our laboratory facility becomes inoperable, we would likely not be able to license or transfer our technology to other facilities with the qualifications, including state licensure and CLIA certification, that would be necessary to cover the scope of our current and our planned future services. Even if we were to find facilities with such qualifications to perform our testing services, they may not be available to us on commercially reasonable terms.

Our success depends on our ability to provide reliable and timely, high-quality genomic data and analyses and to rapidly evolve to meet our customers’ needs.

Errors, including if our tests fail to accurately detect gene variants, or mistakes, or any other quality issues, including if we fail to or incompletely or incorrectly identify the significance of gene variants, could have a significant adverse impact on our business. We classify variants in accordance with guidelines that are subject to change and subject to our interpretation. There have also been and could in the future be flaws in the databases, third-party tools or algorithms we use, or in the software that handles automated parts of our classification protocol. If we receive poor quality or degraded samples, our tests may be unable to accurately detect gene variants or we may fail to or incompletely or incorrectly identify the significance of gene variants, which could have a significant adverse impact on our business, including our customers returning our tests. In addition, our customers require timely turnaround of high-quality genomic data and analyses, and if we were not able to meet our customers’ specific requirements, it could also have a significant adverse effect on our business. Many of our agreements with our customers grant our customers the right to audit our quality assurance processes. If we fail to meet the standards required by these audits, or if we are unable to remediate any deficient findings from these audits, in a timely manner our customers may terminate their agreements with us and it could have an adverse effect on our business, reputation, and results of operations.

Inaccurate results or misunderstandings of, or inappropriate reliance on, the information we provide to our customers could lead to, or be associated with, lack of efficacy, side effects or adverse events in patients who use our tests, or who rely on our tests to determine therapies to develop, select or monitor, including treatment-related death, and could lead to termination of our testing services or result in claims against us. A product liability or professional liability claim could result in substantial damages and be costly and time-consuming for us to defend.

Although we maintain liability insurance, including for errors and omissions and professional liability, we cannot assure you that our insurance would be sufficient to protect us from the financial impact of defending against these types of claims, or any judgments, fines, or settlement costs arising out of any such claims. Any liability claim, including an errors and omissions liability claim, brought against us, with or without merit, could increase our insurance rates or prevent us from securing insurance coverage in the future. Additionally, any liability lawsuit could cause injury to our reputation or cause us to suspend sales of our tests or cause a suspension of our license to operate. The occurrence of any of these events could have an adverse effect on our business, reputation, and results of operations.

If we cannot develop services to keep pace with rapid advances in technology, medicine, and science, or if we experience delays in developing such services, our operating results and competitive position could be harmed.

In recent years, there have been numerous advances in technologies relating to the diagnosis and treatment of cancer. Several new cancer drugs have been approved, and a number of new drugs are in pre-clinical and clinical development. There have also been advances in methods used to identify patients likely to benefit from these drugs based on analysis of biomarkers. We must continuously develop new services, enhance any existing services, and avoid delays in such developments and enhancements to keep pace with evolving technologies on a timely and cost-effective basis. Our current services and our planned future services could become obsolete unless we continually innovate and expand them to demonstrate benefit in the diagnosis, monitoring, or prognosis of patients with cancer. New cancer therapies typically have only a few years of clinical data associated with them, and much of that data may not be disclosed by the pharmaceutical company that conducted the clinical trials. This could limit our ability to develop services based on, for example, biomarker analysis related to the appearance or development of resistance to those therapies. If we cannot adequately demonstrate the clinical utility of our testing services and our planned future services to new treatments, sales of our testing services could decline, which would have a material adverse effect on our business, financial condition, and results of operations.

We are researching and developing improvements to our tests and test features on a continuous basis, but we may not be able to make these improvements on a timely basis, and even if we do, we may not realize the benefits of these efforts in our financial results.

To remain competitive, we must continually research and develop improvements to our tests or test features. However, we cannot assure you that we will be able to develop and commercialize the improvements to our tests or test features on a timely basis. Our competitors may develop and commercialize competing or alternative tests and improvements faster than we are able to do so. In addition, we must expend significant time and funds in order to conduct research and development, further develop and scale our laboratory processes, and further develop and scale our infrastructure. We may never realize a return on investment on this effort and expense, especially if our improvements fail to perform as expected. If we are not able to realize the benefits of our efforts to improve our tests or test features, it could have an adverse effect on our business, financial condition, and results of operations.

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Personalized cancer therapies represent new therapeutic approaches that could result in heightened regulatory scrutiny, delays in clinical development, or delays in or inability to achieve, regulatory approval, commercialization, or payor coverage, any of which could adversely affect our business.

We currently work with certain companies developing personalized cancer therapies, and our future success will in part depend on our personalized cancer customers obtaining regulatory approval for and commercializing their product candidates. Because personalized cancer therapies represent a new approach to immunotherapy for the treatment of cancer and other diseases, developing and commercializing personalized cancer therapies is subject to a number of challenges.

Actual or perceived safety issues, including adoption of new therapeutics or novel approaches to treatment, may adversely influence the willingness of subjects to participate in clinical studies, or if approved by applicable regulatory authorities, of physicians to subscribe to the novel treatment mechanics. The FDA or other applicable regulatory authorities may ask for specific post-market requirements, and additional information regarding benefits or risks of our testing services may emerge at any time prior to or after regulatory approval.

In the European Economic Area (and Northern Ireland) (“EEA”), in order to place an in vitro diagnostic medical device ("IVD"), or an accessory to an IVD, on the market, or put it into service in the EEA, the device must be designed, developed, manufactured and marketed in compliance with the relevant legal framework. On May 26, 2022, the Regulation on In-Vitro Diagnostic Devices (Regulation (EU) 2017/746) (“IVDR”) entered into application, repealing and replacing the Directive on In-Vitro Diagnostic Devices (98/79/EC) (the “IVDD”). The IVDR and its associated guidance documents and harmonized standards govern, among other things, device design and development, preclinical and clinical or performance testing, premarket conformity assessment, registration and listing, manufacturing, labeling, storage, claims, sales and distribution, export and import and post-market surveillance, vigilance, and market surveillance. IVDs must comply with the General Safety and Performance Requirements set out in Annex I of the IVDR. Compliance with these requirements is a prerequisite to be able to affix the CE Mark to IVDs, without which they cannot be marketed or sold in the EEA.

In accordance with the IVDR, devices that are not placed on the market but are used within the context of a commercial activity, whether in return for payment or free of charge, for the provision of a diagnostic or therapeutic service offered by means of information society services, as defined in point (b) of Article 1(1) of Directive (EU) 2015/1535, or by other means of communication, directly or through intermediaries, to a natural or legal person established in the EEA (and Northern Ireland) will be subject to the IVDR. As a result, diagnostic and therapeutic services offered to customers in the EEA (and Northern Ireland) (whether directly or via intermediaries) by providers that are based outside the EEA will be covered by the IVDR.

Fulfillment of the obligations imposed by the IVDR are likely to increase the cost and time required in order to obtain regulatory approval for products and services in the EEA. If we offer tests or services to customers within the EEA (and Northern Ireland) (whether directly or via intermediaries) that fall within the scope of the IVDR, we may be unable to fulfill these obligations, or a notified body, where applicable, may consider that we have not adequately demonstrated compliance with our related obligations to merit a CE Certificate of Conformity on the basis of the IVDR. Our ability, and the ability of our customers, to commercialize diagnostic tests based on our technology will depend in part on the extent to which coverage and reimbursement for these tests will be available from third-party payors. Coverage and reimbursement of new products and services is uncertain, and whether the companies that use our tests or services to develop their own products or services will attain coverage and adequate reimbursement is unknown. In the U.S. and the EU, there is no uniform policy for determining coverage and reimbursement. Coverage can differ from payor to payor, and the process for determining whether a payor will provide coverage may be separate from the process for setting the reimbursement rate. In addition, the U.S. government, state legislatures and foreign governments have shown significant interest in implementing cost containment programs to limit the growth of government-paid healthcare costs, including price controls and restrictions on reimbursement.

Physicians, hospitals, and third-party payors often are slow to adopt new products, services, technologies, and treatment practices that require additional upfront costs and training. Physicians may not be willing to undergo training to adopt personalized cancer therapies, may decide that such therapies are too complex to adopt without appropriate training or not cost-efficient, and may choose not to administer these therapies. Based on these and other factors, hospitals and payors may decide that the benefits of personalized cancer therapies do not or will not outweigh their costs.

The loss of key members of our executive management team could adversely affect our business.

Our success in implementing our business strategy depends largely on the skills, experience, and performance of key members of our executive management team and others in key management positions. The collective efforts of each of our executives and others working with them as a team are critical to us as we continue to develop our technologies, services, and research and development programs. As a result of the difficulty in locating qualified new management, the loss or incapacity of existing members of our executive management team could adversely affect our operations. If we were to lose one or more of these key employees, we could experience difficulties in finding qualified successors, competing effectively, developing our technologies, and implementing our business strategy. If there are changes to our leadership team, there is a risk to organizational effectiveness and employee retention as well as the potential for disruption to our business. Integrating members into new or different management roles could prove disruptive to our operations, require substantial resources and management attention and ultimately prove unsuccessful. Each member of our executive management team has an employment agreement; however, the existence of an employment agreement does not guarantee retention of members of

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our executive management team, and we may not be able to retain those individuals or replace them in the event we lose their services. We do not maintain “key person” life insurance on any of our employees.

In addition, we rely on collaborators, consultants, and advisors, including scientific and clinical advisors, to assist us in formulating our research and development and commercialization strategy. Our collaborators, consultants, and advisors are generally self-employed or employed by employers other than us and may have commitments under agreements with other entities that may limit their availability to us.

The loss or extended illness of a key employee, the failure of a key employee to perform in his or her current position, or our inability to attract and retain skilled employees could result in our inability to continue to grow our business or to implement our business strategy.

We rely on highly skilled personnel in a broad array of disciplines and if we are unable to hire, retain, or motivate these individuals, or maintain our corporate culture, we may not be able to maintain the quality of our testing services or grow effectively.

Our performance, including our research and development programs and laboratory operations and the quality of our testing services, largely depends on our continuing ability to identify, hire, develop, motivate, and retain highly skilled personnel for all areas of our organization. Competition in our industry for qualified employees is intense, and we may not be able to attract or retain qualified personnel in the future, including bioinformatic scientists, bioinformatic engineers, software engineers, statisticians, variant curators, clinical laboratory scientists (“CLS”), and genetic counselors, due to the competition for qualified personnel among life science businesses, technology companies, as well as universities and public and private research institutions, particularly in the San Francisco Bay Area. For example, California has a shortage of qualified CLS, who must be licensed by the California Department of Public Health to perform clinical testing in laboratories located in California such as our CLIA-certified and CAP-accredited laboratory. We face intense competition for, and we have experienced and may in the future experience difficulty attracting and retaining, sufficient numbers of licensed and qualified CLS to support the needs of our business and our laboratory capacity expansion efforts. All of our U.S. employees are at-will, which means that either we or the employee may terminate their employment at any time. In addition, our compensation arrangements, such as our equity award programs, may not always be successful in attracting new employees and retaining and motivating our existing employees for reasons that may include movements in our stock price. If we are not able to attract and retain the necessary personnel, including licensed and qualified CLS, to accomplish our business objectives, we may experience constraints that could adversely affect our ability to scale our business and support our research and development efforts and our laboratory operations. We believe that our corporate culture fosters innovation, creativity, and teamwork. However, as our organization grows, we may find it increasingly difficult to maintain the beneficial aspects of our corporate culture. This could negatively impact our ability to retain and attract employees and our future success.

We have undertaken in the past, and may in the future undertake, internal restructuring activities that could result in disruptions to our business or otherwise harm our results of operations or financial condition.

From time to time, we may undertake internal restructuring activities as we continue to evaluate and attempt to optimize our cost and operating structure in light of developments in our business strategy and long-term operating plans. For example, in the first quarter of 2023 and in the fourth quarter of 2023, we implemented reductions in our workforce to reduce operating costs and improve operating efficiency that collectively affected nearly 50% of our workforce. Any restructuring activities that we may undertake in the future may result in write-offs or other restructuring charges. There can be no assurance that any restructuring activities that we undertake in the future will achieve the cost savings, operating efficiencies or other benefits that we may initially expect. Restructuring activities may also result in a loss of continuity, accumulated knowledge and inefficiency during transitional periods and thereafter. In addition, internal restructurings can require a significant amount of time and focus from management and other employees, which may divert attention from commercial operations and disrupt our ongoing business. If any internal restructuring activities we undertake in the future fail to achieve some or all of the expected benefits therefrom, our business, results of operations and financial condition could be materially and adversely affected.

We may not be able to manage our future growth effectively, which could make it difficult to execute our business strategy.

Our expected future growth could create a strain on our organizational, administrative, and operational infrastructure, including facilities, information technology systems, laboratory operations, quality control, customer service, marketing and sales, and management. We may not be able to maintain the quality of or expected turnaround times for our tests, or satisfy customer demand as our test volume grows. Our ability to manage our growth properly will require us to continue to improve our operational, financial, and management controls, as well as our reporting systems and procedures. As a result of our growth, our operating costs may escalate even faster than planned, and some of our internal systems may need to be enhanced or replaced. If we are unable to manage our growth effectively, it may be difficult for us to execute our business strategy and our business could be harmed.

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We may need to continue to invest in our infrastructure in advance of increased demand for our testing services; our failure to accurately forecast demand would have a negative impact on our business and our ability to achieve and sustain profitability.

Source: SEC EDGAR (public domain) · 10-K for the period ended 2025-12-31, filed 2026-02-26 · accession 0001193125-26-076615

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