10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

For the fiscal year ended December 31, 2025

Commission File Number 001-39659

Biodesix, Inc.

(Exact name of Registrant as specified in its Charter)

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (303) 417-0500

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 $0.001 per share BDSX 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, a 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.

Large accelerated filer ☐ Accelerated filer ☐

Non-accelerated filer ☒ Smaller reporting company ☒

Emerging growth company ☐

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 Act). Yes ☐ No☒

As of June 30, 2025, the aggregate market value of common stock held by non-affiliates of the Registrant was $19.6 million, based on the closing price of the common stock as reported on the NASDAQ Global Market for that date.

The number of shares of Registrant’s Common Stock outstanding as of February 20, 2026 was 9,858,358.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Company’s definitive Proxy Statement to be filed with the Securities and Exchange Commission within 120 days after December 31, 2025, and delivered to stockholders in connection with the Registrant’s annual meeting of stockholders are to be incorporated by reference into Part III, as specifically set forth in Part III.

Table of Contents

Page

PART I

Item 1. Business 3

Item 1A. Risk Factors 23

Item 1B. Unresolved Staff Comments 64

Item 1C. Cybersecurity 64

Item 2. Properties 64

Item 3. Legal Proceedings 65

Item 4. Mine Safety Disclosures 65

PART II

Item 6. [Reserved] 66

Item 7A. Quantitative and Qualitative Disclosures About Market Risk 77

Item 8. Financial Statements and Supplementary Data 77

Item 9A. Controls and Procedures 77

Item 9B. Other Information 78

Item 9C. Disclosures Regarding Foreign Jurisdictions that Prevent Inspections 78

PART III

Item 10. Directors, Executive Officers and Corporate Governance 79

Item 11. Executive Compensation 79

Item 14. Principal Accountant Fees and Services 79

PART IV

Item 15. Exhibit and Financial Statement Schedules 80

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K contains forward-looking statements about us and our industry that involve substantial risks and uncertainties. All statements other than statements of historical facts contained in this Annual Report on Form 10-K, including statements regarding our future financial condition, results of operations, business strategy and plans, and objectives of management for future operations, as well as statements regarding industry trends, are forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potentially,” “predict,” “should,” “will” or the negative of these terms or other similar expressions.

We have based these forward-looking statements largely on our current expectations and projections about future events and trends that we believe may affect our financial condition, results of operations, business strategy and financial needs. These forward-looking statements are subject to a number of risks, uncertainties, factors, and assumptions described under the section titled “Risk Factors” and elsewhere in this Annual Report on Form 10-K, regarding, among other things:

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our inability to achieve or sustain profitability;

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our ability to attain significant market acceptance among payers, providers, clinics, patients, and biopharmaceutical companies for our diagnostic tests;

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difficulties managing our growth, which could disrupt our operations;

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failure to retain sales and marketing personnel, and failure to increase our sales and marketing capabilities or develop broad awareness of our diagnostic tests to generate revenue growth;

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failure to maintain our current relationships, or enter into new relationships, with biopharmaceutical companies;

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significant fluctuation in our operating results, causing our operating results to fall below expectations or any guidance we provide;

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product performance and reliability to maintain and grow our business;

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third-party suppliers, including courier services and single source suppliers; making us vulnerable to supply problems and price fluctuations;

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the impact of a pandemic, epidemic, or outbreak of an infectious disease in the United States (U.S.) or worldwide;

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natural or man-made disasters and other similar events negatively impacting our business, financial condition, and results of operations;

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failure to offer high-quality support for our diagnostic tests, which may adversely affect our relationships with providers and negatively impact our reputation among patients and providers;

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our inability to continue to innovate and improve our diagnostic tests and services we offer;

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security or data privacy breaches or other unauthorized or improper access;

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significant disruptions in our information technology systems;

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the incurrence of substantial liabilities and limiting or halting the marketing and sale of our diagnostic tests due to product liability lawsuits;

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our inability to compete successfully with competition from many sources, including larger companies;

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performance issues, service interruptions or price increases by our shipping carriers;

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cost-containment efforts of our customers, purchasing groups and integrated delivery networks having a material adverse effect on our sales and profitability;

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potential effects of litigation and other proceedings;

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general economic and financial market conditions, including enhanced U.S. tariffs, import/export restrictions or other trade barriers, which may have a negative effect on global economic conditions, financial markets and our business;

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our ability to attract and retain key personnel;

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current and future debt financing placing restrictions on our operating and financial flexibility;

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our need to raise additional capital to fund our existing operations, develop our platform, commercialize new diagnostic tests, or expand our operations;

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the acquisition of other businesses, which could require significant management attention, disrupt our business, dilute stockholder value and adversely affect our results of operations;

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the uncertainty of the insurance coverage and reimbursement status of newly approved diagnostic tests;

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future healthcare reform measures that could hinder or prevent the commercial success of our diagnostic tests;

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compliance with anti-corruption, anti-bribery, anti-money laundering and similar laws;

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compliance with healthcare fraud and abuse laws;

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our ability to develop, receive regulatory clearance or approval or certification for, and introduce new diagnostic tests or enhancements to existing diagnostic tests that will be accepted by the market in a timely manner;

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failure to comply with ongoing FDA or other domestic and foreign regulatory authority requirements, or unanticipated problems with our diagnostic tests, causing them to be subject to restrictions or withdrawal from the market;

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future product recalls;

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legal proceedings initiated by third parties alleging that we are infringing, misappropriating, or otherwise violating their intellectual property rights, the outcome of which would be uncertain;

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the volatility of the trading price of our common stock;

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no assurance that our common stock will maintain compliance with the minimum bid price requirement or other applicable listing standards of The Nasdaq Stock Market LLC (Nasdaq) or another national securities exchange;

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inaccurate estimates or judgments relating to our critical accounting policies, which could cause our operating results to fall below the expectations of securities analysts and investors; and

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other risks, uncertainties and factors, including those set forth under Item 1A. “Risk Factors”.

These risks are not exhaustive. Other sections of this Annual Report on Form 10-K may include additional factors that could harm our business and financial performance. New risk factors may emerge from time to time and it is not possible for our management to predict all risk factors, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in, or implied by, any forward-looking statements.

You should not rely upon forward-looking statements as predictions of future events. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, levels of activity, performance or achievements. Except as required by law, we undertake no obligation to update publicly any forward-looking statements for any reason after the date of this Annual Report on Form 10-K or to conform these statements to actual results or to changes in our expectations.

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

You should read this Annual Report on Form 10-K and the documents that we reference and have filed as exhibits with the understanding that our actual future results, levels of activity, performance and achievements may be different from what we expect. We qualify all of our forward-looking statements by these cautionary statements.

PART I

Item 1. Business.

Business Overview

Biodesix, Inc. (“Biodesix”, “we,” “us,” “our” or the “Company”) is a leading diagnostic solutions company. Our mission at Biodesix is to transform patient care and improve outcomes through personalized diagnostics that are timely, accessible, and address immediate clinical needs. We envision a world where patient disease is conquered through the guidance of personalized diagnostics.

We derive our revenue from two sources: (i) Biodesix Lung Diagnostic Testing (Lung Diagnostic Testing), providing lung diagnostic testing services for healthcare providers associated with our five blood-based tests and (ii) Biodesix Development Services (Development Services) providing diagnostic testing services and consulting to biopharmaceutical, life sciences, and diagnostic companies.

During 2025, we achieved numerous company milestones:

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We delivered on our commercial and diagnostic services strengths resulting in an estimated $88.5 million in total revenue for the year, an increase of 24% over 2024;

Lung Diagnostic Testing - $79.2 million of revenue, an increase of 22%, from 62,600 tests delivered, an increase of 15%;

Development Services - $9.3 million in biopharmaceutical services revenue, an increase of 41%;

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We continued to present and publish new clinical data supporting the adoption of our tests, increased reimbursement coverage for our Lung Diagnostic tests from private payors, and advanced our research and development partnerships;

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We enrolled more than 1,500 patients in the CLARIFY study, which will collect patient outcomes and other clinical information on 4,000 patients who have received Nodify Lung® Nodule Risk Assessment testing in the clinical setting and have at least 1-2 years of follow-up.

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We improved our operational efficiencies increasing gross margin percentage to 81% as compared to 78% in 2024;

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We maintained our cost-disciplined approach limiting growth in full year Operating Expense, excluding Direct costs and expenses to 10% over 2024, including non-cash share-based compensation expenses, while growing revenue by 24%; and

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We were awarded the prestigious 2025 Denver Post | Energage Top Workplaces, the second consecutive year receiving an employee-survey based recognition award – a reflection of our strong team culture and employee engagement.

Our Strategy

At Biodesix, we have built a team with deep experience in diagnostics including commercialization, reimbursement, regulatory, medical affairs, research and development, technology, and operations to provide needed products and services to address critical clinical questions and help improve patient care. We believe that establishing a new standard of care utilizing personalized diagnostics requires an extensive understanding of clinical needs, scientific expertise to develop tests using the optimal technology for each clinical question, development of clinical evidence to demonstrate benefits of the testing, a scalable operational infrastructure, and an established commercial channel to drive market adoption and payer coverage.

We employ multiple technologies, including genomics, proteomics, and radiomics, combined with artificial intelligence (AI), to discover, develop, and commercialize innovative diagnostic tests for physicians, biopharmaceutical, life science, and diagnostics companies to help improve patient care.

Lung Diagnostic Tests - Drive increased awareness, adoption, and reimbursement coverage of our diagnostic tests by:

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continuously educating healthcare providers key opinion leaders, hospital systems, advocacy groups, patients, payers, academic research organizations, and technology assessment and guideline organizations on the clinical data and benefits of our tests;

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continuing to invest in the expansion and professional development of our lung-focused clinical sales force and commercial support teams;

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extending our commercial reach in clinics specializing in the management of lung nodules and the diagnosis of lung disease and their primary care referral networks;

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investing in clinical studies and publish additional clinical data to continue to increase market adoption and reimbursement coverage for our tests;

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publishing health economics and outcomes research demonstrating the impact of our tests on the US healthcare system and decreasing overall costs; and

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engaging key opinion leaders and partners to identify existing or emerging clinical needs in lung disease and to develop tests to address those questions to be provided to the market through our existing commercial channel.

Development Services — Expand revenue-generating contracts with research institutions, biopharmaceutical clients, and life sciences customers by:

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leveraging our team’s expertise and multi-omic offering to sell a comprehensive line of research, discovery, development, clinical trial testing, regulatory, reimbursement, commercialization, and logistics support services across cancer types and diseases;

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adding new biopharmaceutical, life science, tools, and diagnostic customers and leveraging existing projects and relationships to expand engagement with our current customers;

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engaging with our customers, key opinion leaders, leading academic centers, and scientific experts to stay ahead of the rapidly evolving diagnostic and therapeutic landscape and to identify unmet clinical needs; and

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entering strategic partnerships with biopharmaceutical companies, academic research organizations, technology providers, and other diagnostic companies.

Our Tests and Services

Biodesix Lung Diagnostic Tests

Our tests support clinical decisions to expedite personalized care and improve outcomes for patients with lung disease. We believe our diagnostic tests help healthcare providers meaningfully improve lung disease diagnosis, treatment, and monitoring as well as lower the overall healthcare cost by reducing the use of ineffective and unnecessary treatments and procedures. We currently offer two tests that assess the risk of cancer in lung nodules and three tests that provide treatment guidance after a lung cancer diagnosis.

Lung cancer is the deadliest cancer in the United States with most patients diagnosed late stage, with advanced disease. With the introduction of numerous treatment options, healthcare providers need an ever-increasing amount of information to select the best treatment plan for each individual patient. We believe that the lung cancer continuum of care has a variety of clinical unmet needs ranging from initial diagnosis of lung cancer after discovery of a lung nodule to treatment guidance for early and advanced stage disease, and monitoring for disease progression. We estimate that in the United States, the lung cancer continuum of care represents over 10 million annual testing opportunities and represents greater than $27 billion market opportunity annually.

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Diagnosis: We estimate there are approximately 5 to 6 million lung nodules in the United States annually. Approximately 1.6 million new nodules are identified incidentally, and potentially 4 million lung nodules from the adoption of screening could be identified annually in the United States. Following initial discovery of a nodule, patients are typically evaluated by a primary care provider or a pulmonologist for the risk of lung cancer before determining if a patient should be considered for an invasive procedure to obtain a tissue sample to confirm diagnosis or computed tomography (CT) surveillance. This risk assessment includes a review of clinical factors such as the patient’s smoking history and age, and radiological features such as the size, texture, and location of the nodule, obtained from a CT scan. We estimate that approximately 80% of patients are identified as “low to moderate risk (5%-65%)” during these initial risk assessments. The current Lung Nodule guideline recommendations are unclear, often resulting in either over-treatment of patients with benign nodules or under-treatment in patients with cancerous nodules. An estimated 17% of patients initially scheduled for watchful waiting, or follow-up CT scans are later diagnosed with malignant nodules. Data has shown that a delay may lead to diagnosis at a more advanced stage and poorer outcomes for patients. Conversely, we estimate that 62% of biopsies and 35% of surgeries performed on lung nodules find benign disease, representing a significant overtreatment that incurs both risk and cost to the patient and their providers. We believe that there is a strong patient and clinical need for blood-based diagnostic testing to help improve the initial risk assessment of pulmonary nodules, helping direct patients to the relevant treatment pathway, ultimately improving patient outcomes and saving costs to the system across the lung care pathway.

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Treatment Guidance – Early Stage: We estimate that there are over 700 thousand testing opportunities annually in the United States in early-stage lung cancer to assess a patient’s risk of recurrence following curative-intent surgery, and to detect potential target mutations for therapeutics. Depending on a patient’s risk of recurrence, they may also receive chemotherapy, radiotherapy or chemoradiation post-surgery. The assessment of risk of recurrence is primarily based on the stage of cancer at diagnosis, with stage I patients typically receiving no additional treatment beyond surgery. However, 20 to 40% of patients with stage I disease do still recur within five years following surgery, representing a sub-group of patients who may have benefited from more intensive treatment protocol. We believe there is a clear clinical need for blood-based diagnostic testing prior to surgery to identify stage I patients who may benefit from a more intensive treatment protocol and we also believe there is the need for identifying stage II and IIIA patients who may benefit from a less intensive treatment protocol. There

have also been recent advances in the use of targeted therapies in early-stage lung disease. These therapies typically target specific genomic mutations or alterations found in some tumors. We believe there is therefore an emerging need for testing designed specifically for mutation detection in early-stage disease.

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Treatment Guidance – Advanced Stage: We estimate that there are over 3 million diagnostic testing opportunities annually in the United States to guide advanced stage lung cancer treatment decisions. With nearly 60 FDA-approved systemic treatment regimens listed in national treatment guidelines for non-small cell lung cancer (NSCLC), there is an elevated need for personalized biomarkers to help physicians identify the right patient for the right treatment. Multiple tissue-based diagnostic tests have been approved to identify patients eligible for targeted therapies and immunotherapy; however, about 50% of patients do not have sufficient tissue collected following diagnosis to facilitate testing. To compound the issue, different molecular tests take varying amounts of time (days versus weeks) to report results back to the ordering physician. Physicians are often left with a dilemma to either make treatment decisions prior to receiving critical diagnostic test results, or delay treatment initiation while waiting for the test results. Therefore, we believe there is an imminent need for a blood-based testing solution that measures tumor mutations and the patient’s immune profile, to provide physicians with more comprehensive and timely information to initiate personalized treatment as quickly as possible.

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Monitoring: We estimate that there are over 800 thousand testing opportunities in the United States for blood-based tumor genomic and immune profiling to monitor for disease recurrence and progression in NSCLC patients. Unfortunately, advanced stage lung cancer is often terminal, so repeat tissue biopsy to assess the evolution of resistance mutations or to detect disease progression is not feasible from either a cost or risk perspective to the patient, which we believe demonstrates an important need for blood-based testing to help routinely monitor these patients. As a patient progresses through therapies, changes in their immune system occur and blood-based immune profiling could help physicians identify these changes prior to subsequent therapy selection.

Diagnosis – Nodule Management

Our blood-based tests for patients with a pulmonary nodule, Nodify Lung Nodule Risk Assessment, assists healthcare providers in classifying a patient’s risk of lung cancer by integrating their protein biomarker results with radiographic imaging (CT scans) and other clinical characteristics. Nodify Lung testing consists of the Nodify CDT® and Nodify XL2® proteomic tests, which can be ordered separately or together from a single blood draw to help classify risk of cancer to aid healthcare providers in stratifying patients into distinct nodule management pathways with the goal of earlier diagnosis of cancer and avoidance of unnecessary invasive procedures when nodules are benign.

Nodify CDT Test

The Nodify CDT test is a blood-based proteomic test that helps identify patients who have a suspicious lung nodule that is likely malignant or at a higher risk of being cancerous. Results allow physicians to identify patients who may be better candidates for timely invasive diagnostic procedures such as bronchoscopy, transthoracic needle biopsy, or surgical resection, with the goal of diagnosing cancer earlier. The Nodify CDT test enhances lung nodule risk assessment to facilitate compliance with clinical treatment guidelines. The Nodify CDT test is validated for use in patients who are 40 years or older, have no history of cancer except non-melanomatous skin cancer, have nodules between 4 and 30mm, and pre-test risk of lung cancer of less than 65%.

The test measures the levels of seven circulating autoantibodies (P53, NY-ESO-1, CAGE, GBU4-5, SOX2, HuD, and MAGE A4) associated with lung cancer, combined with an algorithm to report out three potential results: High Level, Moderate Level, or No Significant Levels of Antibodies Detected (NSLAD). The seven autoantibodies have been shown to be elevated for all types of lung cancer, and from the earliest stage of the disease.

Unlike the tumor antigens themselves, the autoantibody levels can be measured accurately through a blood sample, based upon the signal amplification generated by the immune response to cancer. This mechanism of action likely reflects very early events in a tumor’s evolution; as the immune system initiates a response to the cancer, it can also trigger an expansion of self-reactive antibodies that can be measured in circulation.

The Nodify CDT test has an established average turnaround time of one business day from receipt of the blood sample, providing physicians with timely results to guide diagnostic planning. The clinical data for the test has been published in a number of peer-reviewed publications and presentations, including a clinical validation study published in late 2024 that confirmed the previously published performance of the test.

Nodify XL2 Test

The Nodify XL2 test is a blood-based proteomic test that helps identify patients who have a suspicious lung nodule that is likely benign or at a reduced risk of being cancerous. Results allow physicians to identify patients who may be better candidates for routine CT surveillance to monitor for growth or shrinkage of the nodule over time instead of an invasive diagnostic procedure. The Nodify XL2 test is used for patients who are 40 years or older, have no history of lung cancer or other recent cancer diagnoses, have nodules between 8 and 30mm, and have a pre-test risk of lung cancer of less than or equal to 50%. A body of clinical data has been published in

peer-reviewed journals and presentations and recent data from the ORACLE clinical utility study was published demonstrating a 74% reduction in unnecessary invasive procedures with the use of the test.

The Nodify XL2 test integrates peptides with clinical and radiological characteristics that are combined by an algorithm to report out three potential results: Likely Benign, Reduced Risk, or Indeterminate. Specifically, the Nodify XL2 test measures the relative abundance of two peptides (LG3BP and C163A) in circulation in the patient’s blood. The native proteins from which the peptides are derived have been associated with an inflammatory response to lung cancer. The clinical factors are patient age and smoking status, and radiological factors are nodule size, location, and edge characteristics.

If both tests are ordered for the patient and the Nodify CDT test returns a result of High or Moderate Level indicating an increased risk of malignancy, then the Nodify XL2 test is cancelled. If the Nodify CDT test returns a result of NSLAD, then the Nodify XL2 test is performed and both test results are typically available within four to five business days.

Lung Cancer Treatment & Monitoring

Profiling the tumor through blood-based genomic testing can help identify mutations in genes that may be driving growth of the tumor and may be targets for therapeutics. However, tumors also have intrinsic mechanisms that prevent the patient’s immune system from identifying and eliminating the cancer cells. Profiling the immune system can show if the patient’s immune system may have been subverted and therefore, is less likely to be responsive to immunotherapies. Our blood-based IQLung® testing strategy consists of the VeriStrat® immune profiling test, and the GeneStrat® ddPCR and GeneStrat NGS® tumor profiling tests, which can be ordered together or separately for patients with NSCLC. Together, the tests have an established average turnaround time of three business days, providing physicians with timely results to facilitate treatment decisions.

VeriStrat Test

The VeriStrat test is a blood-based proteomic test that provides a personalized view of each patient’s immune response to their cancer. Results help inform physicians whether their patient has a more aggressive cancer and can help with treatment planning. The VeriStrat test profiles the patient’s immune system by measuring eight protein features measured by MALDI-ToF mass spectrometry and interpreted by a proprietary machine learning-based algorithm to produce either a VeriStrat Good or VeriStrat Poor test result.

The presence of a VeriStrat Poor result indicates the presence of chronic inflammation and a chronic acute phase immune response. A chronic acute phase immune response can trigger the immune system to provide growth factors to the tumor to increase blood flow and tumor growth. The test has been studied in over 85 peer-reviewed and published clinical studies across many different types of therapies such as chemotherapy, targeted therapies, immune therapies, and combinations. The results consistently show the test to be predictive of outcomes, independent of other prognostic factors including PD-L1 expression and performance status. Patients who test as VeriStrat Poor, on average, have an overall survival that is less than half of those who test as VeriStrat Good, independent of treatment type, demonstrating that the test is strongly prognostic. Conversely, patients with a VeriStrat Good test result typically respond better to standard of care treatments than those patients that test as VeriStrat Poor. By using the VeriStrat test for immune profiling, physicians can help identify the patient's immune response to lung cancer to help guide treatment decisions.

GeneStrat ddPCR Test

The GeneStrat test is a blood-based tumor profiling test that detects the guideline recommended, actionable mutations in lung cancer: EGFR, KRAS, BRAF, EML4-ALK, ROS-1, and RET. Physicians can order one or any combination of the gene tests, whichever they deem medically necessary for the individual patient. The presence of a mutation in one of the genes could indicate the patient is a candidate for the associated guideline-recommended targeted therapy. The GeneStrat test performance and potential clinical utility have been published in multiple peer reviewed studies.

GeneStrat NGS Test

The GeneStrat NGS test is a blood-based 52-gene tumor profiling test panel that detects the guideline recommended, actionable mutations in lung cancer including five gene classes (SNV, INDELS, CNA, fusions, and exon-skipping). Specific variants of relevance to NSCLC include EGFR, KRAS, BRAF, EML4-ALK, ROS-1, RET, MET, NTRK. The GeneStrat NGS test is used for late-stage, metastatic NSCLC and physicians can order one or any combination of the IQLung® tests, whichever they deem medically necessary for the individual patient. The presence of a mutation in one of the genes could indicate the patient is a candidate for the associated guideline-recommended targeted therapy. The GeneStrat NGS test performance and potential clinical utility have been published in multiple published studies.

We believe that rapid, blood-based tumor profiling with the GeneStrat ddPCR and GeneStrat NGS tests can be complementary to both targeted tissue-based testing and tissue-based broad genomic sequencing. Testing with GeneStrat ddPCR and GeneStrat NGS tests at diagnosis can help quickly identify patients who are eligible for targeted therapies. Additionally, blood-based testing upfront can help save valuable tissue for diagnostic evaluation, and broad genomic profiling for rare mutations to enroll in clinical trials.

Commercialization and Competitive Advantages

For our Biodesix Lung Diagnostic Tests, commercial efforts are focused on the promotion of our tests to healthcare professionals actively involved in the diagnosis and treatment of lung disease. Primarily focusing on the pulmonology specialists and their primary care referral network, the Biodesix commercial team, consisting of specialty sales representatives, medical affairs, marketing and customer care representatives, works to educate and inform the entire patient care group consisting of pulmonologists, advanced pulmonary providers, the primary care referral network, nurses, office staff, laboratory personnel, and healthcare administrators on the appropriate use and value provided by our testing. The goal is to drive test adoption through articulating the scientific and clinical evidence behind our tests, how they impact the clinical care pathway options, and how the tests can ultimately help to improve patient outcomes through earlier detection and treatment.

Patients that are discovered to have pulmonary nodules are concentrated in the pulmonology specialty and in their primary care physician referral networks. We also engage with large hospital systems in a “top-down” approach, with the goal of incorporating our tests into system-wide pathways and protocols.

We believe our continued growth drivers stem from our competitive advantages, including:

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Our demonstrated success commercializing diagnostic tests in lung disease with unprecedented turnaround times. With five diagnostic tests launched and multiple improvements and several tests currently in development, our commercial portfolio of blood-based solutions currently addresses clinical unmet needs within diagnosis, treatment and monitoring of lung cancer. Our diagnostic tests provide rapid and actionable diagnostic information to help inform physicians on the next steps in a patient’s care plan to help diagnose lung cancer faster and expediting time to treatment.

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Our broad test offering and continued development and publication of clinical data drives market adoption. We leverage a multi-omic approach to offer various technologies and testing that meet the variety of clinical testing needs for providers treating patients with lung disease. We continue to publish clinical data and health economics and outcomes research to support the ongoing adoption of our tests by physicians, healthcare systems, and payers.

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Our commercial infrastructure, spanning both the lung-focused sales channel and the primary care referral network, which includes our extensive knowledge and experience in sales, marketing, reimbursement and operations, provides us with the ability to efficiently launch and scale tests and drive revenue. We have built one of the only commercial teams in diagnostics focused on lung disease. By offering a broad menu of tests for current clinical use, and continuing to develop additional tests for lung, we can efficiently leverage the existing team and infrastructure to address more clinical needs for the same call point.

Biodesix Development Services

We enable the world’s leading biopharmaceutical, life sciences, and academic research institutions with scientific, technological, and operational capabilities that fuel the development of diagnostic tests, tools, and therapeutics. We provide development services to enable therapeutic clinical trials, the validation of life sciences tools and diagnostics, and the discovery, development, and commercialization of diagnostics. Biodesix Development Services has been utilized by over 65 industry clients and academic research partners.

We continuously revisit our technology strategy and roadmap to integrate new technologies into our evolving offering, which ultimately support the addition of new service and product revenue offerings. We believe that no single technology can interrogate the complexity of the human disease state to help solve all clinical questions. For that reason, we employ a multi-omic and collaborative approach to solving diagnostic challenges.

We offer end-to-end diagnostic solutions, including translational research, initial biomarker discovery, assay design, development, and validation, testing of clinical trial samples, regulatory, reimbursement, commercialization, and logistical support services (e.g., specimen collection and collection kits). We offer our existing on-market tests, a suite of other research tests and the capability to custom design novel tests for use by our customers.

While our biopharmaceutical discovery, diagnostic development and testing revenue continues to grow, it is important to note that we benefit greatly from these partnerships in many ways beyond revenue. We are continuously expanding our knowledge and biological understanding of multiple diseases and the rapidly evolving treatment landscape, for example, by actively partnering in consortia including with the Friends of Cancer Research.

Pipeline

Our pipeline strategy leverages existing infrastructure, both personnel and technology, which is built to support our Lung Diagnostic Tests and Development Services workstreams, creating a cost-effective development funnel that works around our core business. We utilize insights from our clinical teams and industry and academic partnerships to identify novel opportunities for new test development and expanded use of our current on-market tests. We have a combination of internal projects, generally focused on improvements to our

existing diagnostic tests, and external collaborations with academic partners that are typically focused on new test development and exploring additional clinical utility for our existing portfolio.

To continue leveraging our existing commercial channel, we are developing additional tests to help address clinical unmet needs for patients with lung disease. Through pipeline development and research partnerships, we may develop tests that have clinical utility outside of lung disease, in which case we will assess potential partners for commercialization with the goal of maintaining the Biodesix commercial team’s focus on lung disease.

Risk of Recurrence (ROR) & Molecular Residual Disease (MRD) Combination Test – Pan Cancer

Using ddPCR for longitudinal blood-based monitoring of cell-free DNA mutations is a cost-effective testing method while patients are being treated with targeted therapies. Additional utility for ddPCR and our proteomics approach exists for molecular residual disease testing given the sensitivity and specificity of these technologies. In March 2024, we announced a Master Collaborative Research Agreement with Memorial Sloan Kettering Cancer Center (MSKCC), under which the teams are collaborating on a development plan for diagnostic tests aimed at improving the treatment of cancer, including MRD.

VeriStrat Test – Immunotherapy use Pan Cancer

We have conducted broad studies in multiple cancers in collaboration with MSKCC and observed that pre-treatment MSI-H patients eligible for treatment with pembrolizumab have a strong prognostic effect with the previously developed VeriStrat test. Patients that are eligible for treatment with pembrolizumab that are MSI-H may derive beneficial information from the rapid VeriStrat blood test. The VeriStrat test may aid in treatment decisions across a number of cancers that have the MSI-H biomarker. Cancers tested included colorectal and endometrial cancer. Data was presented at the annual Association for Molecular Pathology (AMP) conference in November 2025.

VeriStrat Test – Prostate Cancer

We have observed a strong prognostic effect with the VeriStrat test in metastatic castration-resistant and castrate-sensitive prostate cancer patients eligible for treatment with Abiraterone and Enzalutamide. Data was presented at the annual American Society for Mass Spectrometry (ASMS) and AMP conferences in June and November 2025, respectively. We believe the VeriStrat test may aid in further treatment decisions in this patient population.

ESR1 Monitoring – Breast Cancer

In October 2025, we announced the signing of an expanded partnership agreement under which Biodesix will conduct the development, clinical validation, and regulatory submissions of in vitro diagnostic (IVD) assays to enable highly sensitive detection of multiple genomic markers focused on oncology applications, utilizing Bio-Rad’s Droplet DigitalTM PCR (ddPCRTM) technology on Bio-Rad’s QX600 platform. The first assay to be validated under the agreement include Bio-Rad’s ddPLEX ESR1 Mutation Detection Assay. ESR1 testing is becoming critical in HR+/HER2- advanced breast cancer due to the clinically demonstrated survival benefits from a new generation of therapy called oral selective estrogen receptor degraders (SERDs). The ddPLEX ESR1 Mutation assay will enable highly sensitive detection and quantification of multiple ESR1 mutations from ctDNA samples. Once validated, the ESR1 assay will be offered as a test service at Biodesix accredited CLIA-CAP laboratory for biopharmaceutical customers to support the development of targeted therapeutics, as well as for clinical customers to support cancer treatment monitoring.

Clinical Trials

We are dedicated to continuously publishing and presenting new data on the clinical validation and utility of our diagnostic tests. The following are our ongoing clinical studies for our diagnostic testing solutions.

ALTITUDE Clinical Utility Study (NCT04171492)

The ALTITUDE clinical utility study is designed to evaluate the performance of Nodify Lung testing (Nodify XL2 and Nodify CDT tests) in a randomized controlled study (RCT). The study is titled “A Multicenter, Randomized Controlled Trial, Prospectively Evaluating the Clinical Utility of the Nodify XL2 Proteomic Test in Incidentally Discovered Low to Moderate Risk Lung Nodules”. The study objectives are to evaluate how the addition of the Nodify Lung test result impacts the clinical decision making for patients with new, incidentally identified solid lung nodules assessed as low to moderate risk of lung cancer. The trial has an adaptive study design with a blinded standard of care arm and 2:1 randomization for open-label results for the Nodify XL2 test. On July 21, 2025, we ended patient accrual based on the recommendation of the Data Safety Monitoring Board. Final analysis will be completed following two-year follow-up.

CLARIFY Clinical Utility Study (NCT06728319)

CLARIFY is a large, retrospective study assessing the performance of the Nodify CDT and Nodify XL2 tests in a real-world patient population. The study is titled “A Multicenter, Retrospective, Chart Review Study Evaluating The Impact and Utility of the Blood-Based Proteomic Integrated Classifier and Auto-Antibody Tests in the Real World.” The study's primary objective is to assess the performance of the Nodify CDT and Nodify XL2 tests both individually and serially. The study will evaluate up to 4,000 patients who have at least one to two years of follow-up from high-volume community and academic practices that have integrated the testing into their management of lung nodules. Further evaluation of the performance of the tests in a large, real-world population will provide deeper insights into day-to-day clinical practice and diverse and understudied patient sub-populations. It received central IRB approval in August 2024 and began enrollment in September 2024. Through December 31, 2025, the CLARIFY study has accrued over 1,500 patients.

INSIGHT Observational Study (NCT03289780)

The INSIGHT observational study is designed to evaluate the real-world clinical utility and performance of VeriStrat, GeneStrat ddPCR, and GeneStrat NGS tests. The title is “Observational Study Assessing the Clinical Effectiveness of VeriStrat and Validating Immunotherapy Tests in Subjects with Non-Small Cell Lung Cancer (INSIGHT)”. On June 27, 2023, we completed enrollment of 5,000 patients with non-small cell lung cancer. Final analysis with three-year follow-up is estimated to be completed by the end of 2026.

Reimbursement

The primary source of reimbursement for our tests in the United States is from third-party payers, including government payers, such as Medicare, and commercial payers, such as insurance companies. Reimbursement for laboratory tests in the United States is determined by various payers, including private third-party payers, managed care organizations, and state and federal health care programs, such as Medicare and Medicaid. In Medicare, coverage of an item or service depends on whether it is “reasonable and necessary” under Section 1862(a)(1)(A) of the Social Security Act (SSA). For single-source laboratory tests, this determination is typically made by the Medicare Administrative Contractor (MAC) with jurisdiction over the laboratory where the test is performed. Our Louisville, Colorado laboratory is currently under the jurisdiction of Novitas Solutions, Inc. Our De Soto, Kansas laboratory is under the jurisdiction of Wisconsin Physicians Service Insurance Corporation (WPS), which participates in the MolDX program (administered by another MAC, Palmetto GBA) to set coverage policy for molecular diagnostic tests.

Medicare pays for clinical diagnostic laboratory tests (CDLTs), on the Clinical Laboratory Fee Schedule (CLFS). Section 216(a) of the Protecting Access to Medicare Act of 2014 (PAMA) added Section 1834A to the SSA, which established the current CLFS rate setting processes and coding provisions for CDLTs, and created a new subcategory of CDLTs called Advanced Diagnostic Laboratory Tests (ADLTs), with separate reporting and payment requirements.

Under Section 1834A and its implementing regulations, clinical laboratories that receive the majority of their Medicare revenues from payments made under the CLFS and the Physician Fee Schedule report on a triennial basis (or annually for ADLTs), private payer rates and volumes for their tests with specific billing codes based on final payments made during a set data collection period. The payment rate for a test for the ensuing three-year period (or one year for ADLTs) is set at the weighted median of the rates reported under the specific billing code for that test. Newly established codes for CDLTs are priced until the next private payer rate reporting cycle either based on the payment rate of a comparable code on the CLFS, as determined by CMS ("crosswalking") or at the median of rates submitted by the individual MACs based on statutory and regulatory factors ("gapfilling"). New ADLTs are initially priced at “actual list charge” for a nine-month period, after which they are priced based on private payer rates, with a recoupment provision if actual list charge is more than 130% of the weighted median of private payer rates reported.

The various payers in the United States also determine their own billing rules. In December 2020, Medicare revised its billing rules for clinical laboratory tests to require cancer-related protein-based Multianalyte Assays with Algorithmic Analyses to be billed directly to Medicare by the performing laboratory in most cases when performed on a specimen collected from a hospital outpatient. Molecular

pathology tests and most ADLTs are also generally required to be billed directly to Medicare by the laboratory under these circumstances.

CMS has designated three of the Biodesix tests as Advanced Diagnostic Laboratory Tests (ADLT). The designation was effective for the Nodify CDT test as of June 30, 2023, for the Nodify XL2 test as of May 17, 2019, and for the VeriStrat test as of December 21, 2018. Obtaining ADLT status is a recognition that the tests meet the stringent criteria established under the Protecting Access to Medicare Act of 2014. ADLT status is reserved for innovative tests with Medicare coverage that are offered and furnished by a single laboratory and provide new clinical diagnostic information that cannot be obtained from any other test or combination of tests. We believe that our lung cancer tests can both improve patient outcomes and help guide cost-effective treatment choices for patients with and at-risk of lung cancer. Achieving broad coverage and adequate reimbursement for each of our tests is a key component of our financial success and will continue to be important over time.

Compliance with applicable laws and regulations, as well as internal compliance policies and procedures, adds complexity to the billing process. CMS is responsible for overseeing the establishment of new Healthcare Common Procedure Coding System (HCPCS) codes for billing the Medicare program and other payers. CMS continuously evaluates and implements changes to the Medicare billing, coding, and reimbursement processes. To receive reimbursement from third-party payers, we bill our tests using a variety of HCPCS codes or Current Procedural Terminology (CPT) codes, as defined by the American Medical Association. For some of the tests we conduct, there may not be a specific CPT or HCPCS code, in which case the test may be billed under a miscellaneous code for an unlisted molecular pathology procedure or unlisted multiple analyte test with algorithmic analysis (MAAA) procedure. Because these miscellaneous codes do not describe a specific service, the third-party payer claim may be examined to determine the service provided, whether the service was appropriate and medically necessary and whether payment should be rendered. This process can result in a delay in processing the claim, a lower reimbursement amount, and/or denial of the claim.

Competition

We primarily face competition from diagnostic companies that provide cancer-focused diagnostic tests to hospitals, researchers, clinicians, and biopharmaceutical companies.

Diagnosis—Nodule Management

We are not aware of any other company that offers commercial blood-based tests to help physicians reclassify risk of malignancy in patients with suspicious lung nodules. We are aware of efforts by Veracyte, Inc. to develop and validate a test that may be competitive to the Nodify XL2 and/or Nodify CDT tests in the future.

Treatment Guidance and Monitoring—Non-Small Cell Lung Cancer

We are unaware of any other diagnostic test available, commercially or in development, that will compete with our VeriStrat immune profiling test. There is substantial interest and activity in tumor profiling through liquid biopsy. Our genomic test offerings, the GeneStrat ddPCR and GeneStrat NGS tests, face competition from academic hospital laboratories, and companies such as Guardant Health and Foundation Medicine. We believe that there are several companies and academic research institutions in the process of developing tests for monitoring patients or following treatment for recurrence or progression of lung cancer.

Biodesix Development Services

We are aware of a number of companies who compete with our Development Services for biopharmaceutical, life science and research partners, including in diagnostic research, clinical trial testing, and the discovery, development, and commercialization of tests. From the perspective of tumor profiling, we believe Guardant Health, Foundation Medicine, Tempus AI, and NeoGenomics are our most significant competitors. Conversely, in the immune profiling market, we believe Adaptive Biotechnologies and Personalis are our most significant competitors.

Clinical Laboratory Operations

Throughout 2025, all aspects of the testing process, from receipt of the test requisition form through delivery of test results, were performed for the VeriStrat, GeneStrat ddPCR, and GeneStrat NGS tests in our Louisville, Colorado facility. The proprietary testing methods use semi-automated workflows that facilitate successful delivery averaging 90% of our tests within three days, and we believe our existing workflows will continue to successfully deliver our tests within this timeframe. Our Louisville facility is a high-complexity Clinical Laboratory Improvement Amendments (CLIA) certified clinical laboratory. The laboratory is College of American Pathology (CAP) accredited, New York State Department of Health (NYSDOH)—permitted holding necessary Laboratory Director certifications and test approvals, ISO 13485:2016 Quality Management Systems—Requirements for Regulatory Purposes for Medical Devices certified, along with all other states that require licensing: California, Maryland, Pennsylvania, and Rhode Island.

Receipt of requisitions and testing for the Nodify CDT and Nodify XL2 tests are performed in our De Soto, Kansas clinical laboratory. Delivery of the test results is centralized to our Louisville, Colorado corporate headquarters. The proprietary testing methods use semi-automated workflows that facilitate successful delivery averaging 90% of our tests within five business days, and we believe our existing workflows will continue to successfully deliver our tests within this timeframe. Our De Soto, Kansas facility is a high-complexity CLIA

certified clinical laboratory. This clinical laboratory is also CAP-accredited, NYSDOH—permitted holding necessary Laboratory Director certifications and test approvals, Quality Management Systems—Requirements for Regulatory Purposes for Medical Devices certified and licensed by California, Maryland, Pennsylvania, and Rhode Island.

Personnel in both laboratory facilities are responsible for quality assurance oversight, licensing, and regulatory compliance and maintenance to ensure data integrity and consistent, validated processes.

Supply Chain

We rely on third-party suppliers to provide certain components of our diagnostic tests, including a select few (located in the United States, Europe and China), as critical single source providers of components. Bio-Rad, as described below, is the sole source supplier for our GeneStrat test. Freenome's United States operations (formerly "Oncimmune USA" or "Oncimmune") is also the sole source supplier for our Nodify CDT tests but there are known secondary suppliers for these materials.

We entered into a nonexclusive license and supply agreement with Bio-Rad in August 2019. We rely on Bio-Rad to supply equipment and reagents used to perform ddPCR testing, a service offered by us under a variety of fee for service agreements and the core technology powering the GeneStrat test, but these supplies are able to be supplied by known suppliers. A disruption to this supply would negatively impact our ability to perform the GeneStrat tests until alternatives can be validated.

All materials for our VeriStrat test and Nodify XL2 test have alternative suppliers readily available, and a disruption in any single supplier would not materially impact our ability to deliver the test.

We have initiated the second source qualification process for the majority of these critical components, however, we may not be successful in securing second sourcing for all of them at all or on a timely basis. A disruption to this supply would negatively impact our ability to perform these tests until an alternative supplier could be validated.

Intellectual Property

Our success depends, in part, on our ability to obtain and maintain intellectual property and proprietary protection for our products and other know-how, to operate our business without infringing, misappropriating or otherwise violating the intellectual property and proprietary rights of others, and to defend and enforce our intellectual property and proprietary rights. We take efforts to protect our proprietary position using a variety of methods, which include pursuit of United States and foreign patent applications related to our proprietary technology, inventions and improvements that we determine are important to our business. We also may rely on trade secrets, trademarks, know-how, continuing technological innovation and potential in-licensing and acquisition opportunities to develop and maintain our proprietary position. For more information regarding risks relating to intellectual property, please see “Risk Factors—Risks Related to Our Intellectual Property.”

We have invested heavily in the protection of our key assets, namely the VeriStrat and GeneStrat tests, and we acquired a patent portfolio relating to the Nodify XL2 and Nodify CDT tests in our acquisitions of Indi in June 2018, and of Oncimmune USA in October 2019 from Oncimmune Limited (Oncimmune). We own patents and patent applications as well as trade secrets relating to our products currently in development, a collection device for whole blood, our business strategy, client lists and business methods. Further, we have expanded our access to key intellectual property through license and co-development agreements, including our Non-Exclusive License Agreement with Bio-Rad (the Bio-Rad License), which allows us to use the Droplet Digital PCR technology developed by Bio-Rad and which we employ in our GeneStrat test.

Our patent strategy has focused on creating and acquiring protection for our VeriStrat and Nodify XL2 proteomic tests, while utilizing trade secret and some methods patent protection for our genomic test (the GeneStrat ddPCR and GeneStrat NGS tests) and ELISA test (the Nodify CDT test). We have entered into a non-exclusive license agreement with Bio-Rad, without the right to grant sublicenses, to utilize certain of Bio-Rad’s intellectual property, machinery, materials, reagents, supplies and know-how necessary for the performance of ddPCR in cancer detection testing for third parties in the United States. Bio-Rad owns patents relating to ddPCR and to which we have a non-exclusive license to utilize for the performance of ddPCR in cancer detection testing for third parties as set forth in the Bio-Rad License Agreement. We have patent protection in the United States and other countries around the world for the primary use of the VeriStrat test for profiling of patients with NSCLC, and various other uses of the VeriStrat test, such as breast cancer, prostate cancer, head and neck cancer have received patent protection. We have also received patent protection relating to our core classifier development program, our AI platform and our approaches to using MALDI-ToF technology (DeepMALDI® techniques). Additionally, our first device patent was issued in 2019 for our internally designed blood collection device.

As of December 31, 2025, our patent portfolio includes 60 issued United States patents, 84 issued foreign patents, and 18 pending applications (including 10 foreign patent applications). With regard to our product development efforts, new applications have been filed around developments relating to micro-organisms diagnostics, new analytic methodologies using Shapley values and semi-quantitative spectra analysis in MALDI, and national stage applications are now in active prosecution to protect our pipeline ROR and PIR tests.

The patent portfolio can be broken down into five major categories:

Issued patents and patent applications relating to the VeriStrat and Nodify® tests and uses of these tests;

Issued patents and patent applications relating to methods for developing classifiers, including using our AI platform and DeepMALDI technologies;

Issued patents and patent applications relating to tests currently in development;

Issued patents and patent applications relating to our novel blood collection device; and

Issued patents and patent applications relating to tests developed for our third-party partners.

The patents relating to the VeriStrat test are scheduled to expire between 2026 and 2032 and are actively under review for additional protection. The patents relating to the Nodify XL2 test are scheduled to expire beginning in 2031 (excluding any patent term extension granted by the United States Patent and Trademark Office (USPTO)), and the patents relating to the Nodify CDT test are scheduled to expire in 2027 and are actively under review for additional protection. The patent related to the blood collection device is scheduled to expire in 2039. Should our current patent applications in prosecution in the United States issue, the resulting patents would be scheduled to have expiration dates between 2036 and 2040 (excluding any patent term extension(s) granted by the USPTO).

Patent Cooperation Treaty (PCT) applications are not eligible to become issued patents until, among other things, we file such PCT applications as national stage patent application(s) within 30 months in the countries in which we seek patent protection. If we do not timely file any national stage patent applications, we may lose our priority date with respect to any such PCT patent applications and any patent protection on the inventions disclosed in such PCT patent applications. Provisional patent applications are not eligible to become issued patents but can become the basis of PCT foreign stage and United States non-provisional patent applications, if such applications are filed within 12 months of filing the related provisional patent application. If we do not timely file any non-provisional patent applications, we will lose our priority date and any patent protection on the inventions disclosed in any such provisional patent application. As of December 31, 2025, we have no pending PCT applications.

In addition, the term of individual issued patents depends upon the legal term for patents in the countries in which they are obtained. In most countries in which we have filed, including the United States, the patent term is generally 20 years from the earliest filing date of a non-provisional patent application, assuming the patent has not been terminally disclaimed over a commonly-owned patent or a patent naming a common inventor, or over a patent not commonly owned but that was disqualified as prior art as the result of activities undertaken within the scope of a joint research agreement. The life of a patent, and the protection it affords, is therefore limited and once the patent lives of our issued patents have expired, we may face competition, including from other competing technologies. In the United States, the term of a patent may also be eligible for patent term adjustment for delays within the USPTO. The term of a patent that covers a biological product may also be eligible for patent term extension when FDA approval is granted for a portion of the term effectively lost as a result of the FDA regulatory review period, subject to certain limitations and provided statutory and regulatory requirements are met. Any such patent term extension can be for no more than five years, only one patent per approved product can be extended, the extension cannot extend the total patent term beyond 14 years from approval, and only those claims covering the approved biological product, a method for using it or a method for manufacturing it may be extended. We may not receive an extension if we fail to exercise due diligence during the testing phase or regulatory review process, fail to apply within applicable deadlines, fail to apply prior to expiration of relevant patents or otherwise fail to satisfy applicable requirements. Moreover, the length of the extension could be less than we request. There can be no assurance that we will benefit from any patent term extension or favorable adjustment to the term of any of our patents. As a result, our owned and licensed patent portfolio may not provide us with sufficient rights to exclude others from commercializing products similar or identical to ours.

Our ability to maintain and solidify our proprietary and intellectual property position will depend on our success in obtaining effective patent claims and maintaining and enforcing claims that are granted. However, our owned and licensed patents could be invalidated or narrowed or otherwise fail to adequately protect our proprietary and intellectual property position and our pending owned and licensed patent applications, and any patent applications that we may in the future file or license from third parties, may not result in the issuance of patents.

Branding is a part of any intellectual property strategy as patent or trade secret protection and we have a number of registered and pending trademarks relating to our company and products. We have received or filed for trademark protection in the United States for our trade name (Biodesix), the Biodesix logo, the names of five of our commercial tests (namely the VeriStrat, GeneStrat ddPCR, GeneStrat NGS, Nodify XL2 and Nodify CDT tests), and a suite of research tests (ImmunoStrat test), as well as having trademark protection for our core development and methodological platforms, such as our AI platform and DeepMALDI technologies. In all, as of December 31, 2025, we have 13 uniquely registered United States trademarks, four of which (including Biodesix, VeriStrat, Nodify and GeneStrat) have received foreign issuances as well, with one trademark pending approval from the USPTO. We will continue to pursue protection in the United States and abroad for our branded assets and will continue to use branding to protect products currently in development, key Biodesix developments and non-trade secret methodologies.

We also rely on trade secrets, including know-how, confidential information, unpatented technologies and other proprietary information, to strengthen or enhance our competitive position, protect and maintain aspects of our business that are not amenable to, or that we do not presently consider appropriate for, patent protection, and prevent competitors from reverse engineering or copying our technologies. We have decided that some technologies, such as our laboratory methodologies (including sample preparation and assay development), and some information (such as client and billing information) are best kept as trade secrets. However, trade secrets and confidential know-how are difficult to protect. To avoid inadvertent and improper disclosure of trade secrets, and to avoid the risks of former employees using these trade secrets to future employment, it is our policy to require employees, consultants and independent contractors to assign all rights to intellectual property they develop in connection with their employment with or services for the Company to the Company. We also protect our existing and developing intellectual property expressly through confidentiality provisions in agreements with third parties. There can be no assurance, however, that these agreements will be self-executing or otherwise provide meaningful protection for our trade secrets or other intellectual property or proprietary information, or adequate remedies in the event of unauthorized use or disclosure of such trade secrets or other intellectual property or proprietary information.

We also seek to preserve the integrity and confidentiality of our trade secrets and other confidential information by maintaining physical security of our premises and physical and electronic security of our information technology systems. While we have confidence in the measures we take to protect and preserve our trade secrets, such measures can be breached, and we may not have adequate remedies for any such breach. In addition, our trade secrets may otherwise become known or be independently discovered by competitors.

We intend to pursue additional intellectual property protection to the extent we believe it would advance our business objectives, which may include objectives within and outside the United States. Despite our efforts to protect our intellectual property rights, and despite the breadth of protection that has issued around our key assets, these rights may not be respected in the future or may be circumvented or challenged (and potentially invalidated) in a legal proceeding in any jurisdiction where we have intellectual property rights. In addition, the laws of various foreign countries where we have received intellectual property protection and where we may eventually distribute our products may not afford the same protections or assurances to the same extent as the laws in the United States. See “Risk Factors—Risks Related to Our Intellectual Property” for additional information regarding these and other risks related to our intellectual property portfolio and their potential effect on us.

Government Regulations

Clinical laboratory tests like our diagnostic tests are regulated under CLIA and state law. The FDA regulates medical devices pursuant to the Federal Food, Drug, and Cosmetic Act (FDCA), including many diagnostic test kits, such as IVDs. However, most Laboratory Developed Tests (LDTs) are not currently subject to enforcement under the FDA’s regulation (although reagents, instruments, software or components provided by third parties and used to perform LDTs may be subject to such enforcement), and the FDA has historically exercised enforcement discretion over LDTs. LDTs 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. Historically, high-complexity clinical laboratories have offered LDTs under the CLIA regulatory framework administered by CMS, without FDA premarket clearance or approval.

We currently market our GeneStrat, VeriStrat, Nodify XL2 and Nodify CDT tests as LDTs in the United States. As a result, we believe our diagnostic services are not currently subject to the FDA’s enforcement of its medical device regulations and the applicable FDCA provisions. If the FDA disagrees with the LDT status of any of our tests, the FDA may consider the test to be an unapproved medical device and may subject us to FDA enforcement action, including, without limitation, requiring us to seek clearance, authorization or approval for the laboratory test. If the FDA were to begin enforcement with respect to our LDTs, we could incur substantial costs and delays associated with trying to obtain pre-market clearance or approval and costs associated with complying with post-market requirements.

FDA’s authority to regulate LDTs has been contested for many years, and there have been several legislative and administrative proposals regarding LDT regulation seeking to end or limit enforcement discretion and to bring LDTs under new or existing FDA regulatory frameworks. On May 6, 2024, the FDA published a final rule to actively regulate LDTs under a multi-year phase-in framework. On May 29, 2024, the American Clinical Laboratory Association and HealthTrackRx filed suit challenging the rule, and on March 31, 2025, the U.S. District Court for the Eastern District of Texas vacated the rule, concluding that LDTs developed and used within a single clinical laboratory are not “devices” under the FDCA and therefore fall outside FDA’s statutory authority. The FDA did not appeal the ruling, and the final rule was rescinded on September 19, 2025. At this time, it remains uncertain whether or how the FDA may seek to regulate LDTs that are developed across multiple laboratories, used outside traditional clinical settings, or offered through digital health or direct to consumer channels. Legislative proposals have also periodically sought to clarify or expand FDA’s authority over LDTs, and future statutory or regulatory developments may shape FDA’s approach to oversight of LDTs and related components.

Federal and State Laboratory Licensing Requirements

The Biodesix Louisville, Colorado clinical laboratory is a CAP-accredited clinical laboratory regulated by CMS pursuant to CLIA. CMS has granted CAP deeming authority under CLIA, which allows CAP to inspect laboratories in lieu of CMS. In addition to holding a CLIA Certificate and CAP laboratory accreditation, Biodesix Quality Management System (QMS) holds an ISO 13485:2016 certificate. The Biodesix Louisville, Colorado clinical laboratory received approval from the NYSDOH, NYS CLEP in Soluble Tumor Markers,

and Molecular and Cellular Tumor Markers as well as held state permits and licenses in California, Maryland, New York, Pennsylvania, and Rhode Island.

CLIA regulations establish standards for proficiency testing; facility administration; general laboratory systems; pre-analytic, analytic systems, post- analytic systems; personnel qualifications and responsibilities; quality control, quality assessment; and specific provisions for laboratories performing moderate to high complexity tests. Our Louisville, Colorado clinical laboratory is inspected biennially as part of its ongoing certification under CLIA certificate of accreditation by CAP.

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.

The International Organization for Standardization (ISO) is an independent, non-governmental international organization that defines world-class specifications for products, services and systems, to ensure quality, safety and efficiency. ISO 13485:2016 is a harmonized, international regulatory benchmark for quality management systems that addresses most or all of the QMS requirements in markets including the United States, European Union, Australia, Japan and Canada. The ISO 13485:2016 certificate confirms that an organization operates a QMS that conforms to the standards established by ISO. On January 31, 2024, the FDA issued a final rule to harmonize and modernize its Quality System Regulation (QSR), which would supplant the existing requirements with ISO 13485:2016. The rule amends the current good manufacturing practice requirements of the QSR in 21 CFR 820. The FDA’s Quality Management System Regulation (QMSR) rule emphasizes risk management activities and risk-based decision making and aims to reduce regulatory burdens on device manufacturers and importers by harmonizing domestic and international requirements. Device manufacturers and importers have one year to modify their quality systems to meet the requirements of the QMSR rule by February 2, 2026. Accordingly, Biodesix’s QMS is designed and implemented, in alignment with ISO 13485:2016 and has been proactively updated to meet the requirements of the FDA’s QMSR, confirming our ongoing compliance with both international standards and the harmonized U.S. regulatory framework.

The Biodesix De Soto, Kansas clinical laboratory is a CAP-accredited clinical laboratory regulated by CMS pursuant to CLIA. CMS has granted CAP deeming authority under CLIA, which allows CAP to inspect laboratories in lieu of CMS. The De Soto, Kansas clinical laboratory has received approval from the NYSDOH, NYS CLEP in Soluble Tumor Markers and Diagnostic Immunology as well as holding state permits and licenses in California, Maryland, Pennsylvania, and Rhode Island.

To renew our CLIA certificate, we are subject to survey and inspection every two years to assess compliance with program standards. Laboratories such as ours, which are performing high complexity testing, are required to meet more stringent CLIA requirements than laboratories performing less complex tests, and therefore our laboratories are also subject to random, unannounced survey and inspection at any time. In addition, a laboratory that is certified as “high complexity” under CLIA may develop, manufacture, validate and use proprietary 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 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 licensure, certain states may require that laboratory personnel meet qualifications, quality control procedures, facility requirements, record maintenance requirements or other state-specific requirements.

Because our Louisville, Colorado clinical laboratory is located in the State of Colorado, we do not need a specific State of Colorado laboratory license, however, we maintain licenses to conduct testing in other states where nonresident laboratories are required to obtain state laboratory licenses. We maintain licenses for our Louisville, Colorado and De Soto, Kansas laboratories with the NYSDOH. We also hold licenses in other states in which we operate, including California, Maryland, Pennsylvania and Rhode Island, that require licensing of out-of-state laboratories under certain circumstances. 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 until such requirements are met.

Failure to comply with CLIA certification and state clinical laboratory licensure requirements may result in a range of enforcement actions, including certificate or license suspension, limitation, or revocation, directed plan of action, onsite monitoring, civil monetary penalties, criminal sanctions, and revocation of the laboratory’s approval to receive Medicare and Medicaid payment for its services, as well as significant adverse publicity.

CLIA and state laws and regulations, operating together, sometimes limit the ability of laboratories to offer consumer-initiated testing, also known as direct access testing. We do not offer direct access testing and instead require that our tests be ordered by licensed healthcare providers.

Our Louisville, Colorado and De Soto, Kansas laboratories are certified and adhere to the NYS CLEP, based on New York State Public Health Law, Article 5 Title 5. NYS CLEP is exempt from CLIA and establishes their own method of laboratory certification and test

validation approval. To process New York State patient specimens a laboratory must submit a robust analytical and clinical validation package to demonstrate clinical utility of the test and receive approval prior to offering the test in the state of New York. All of our tests have obtained NYS CLEP approval including GeneStrat ddPCR, GeneStrat NGS, VeriStrat, Nodify XL2 and Nodify CDT tests. NYS CLEP requires semi-annual inspections to ensure the laboratory meets all general and specialty standards. Due to the pandemic, NYSDOH CLEP routine re-inspections were delayed by multiple years.

Regulatory Framework for Medical Devices in the United States and Internationally

Pursuant to its authority under the FDCA, the FDA has jurisdiction over medical devices, which are defined to include, among other things, IVDs. The FDA regulates the research, design, development, pre-clinical and clinical testing, manufacturing, safety, effectiveness, packaging, labeling, storage, recordkeeping, pre-market clearance or approval, adverse event reporting, marketing, promotion, sales, distribution and import and export of medical devices. It is possible that one or more of our current, or future, tests will be subject to FDA authority and oversight as either an IVD or a CDx pursuant to the FDA’s authority to regulate medical devices under the FDCA.

Medical devices are subject to extensive regulation in the United States and elsewhere, including by the FDA and its foreign counterparts. Government regulations specific to medical devices are wide ranging and govern, among other things:

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product design, development, manufacturing assembly and release;

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laboratory and clinical testing, labeling, packaging, storage and distribution;

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product safety and efficacy;

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premarketing clearance or approval;

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service operations, including assay development and validation, clinical sample testing, clinical trial solutions, and quality and regulatory solutions;

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record keeping;

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product marketing, promotion and advertising, sales and distribution;

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post-marketing surveillance, including reporting of deaths or serious injuries and recalls and correction and removals;

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post-market approval studies; and

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product import and export

Many countries in which we may offer any of our diagnostic tests in the future have anti-kickback regulations prohibiting providers from offering, paying, soliciting or receiving remuneration, directly or indirectly, in order to induce business that is reimbursable under any national health care program. In situations involving physicians employed by state-funded institutions or national health care agencies, violation of the local anti-kickback law may also constitute a violation of the Foreign Corrupt Practices Act of 1997 (FCPA).

The FCPA prohibits any United States individual, business entity or employee of a United States business entity to offer or provide, directly or through a third party, including any potential distributors we may rely on in certain markets, anything of value to a foreign government official with corrupt intent to influence an award or continuation of business or to gain an unfair advantage, whether or not such conduct violates local laws. In addition, it is illegal for a company that reports to the Securities and Exchange Commission (SEC) to have false or inaccurate books or records or to fail to maintain a system of internal accounting controls. We will also be required to maintain accurate information and control over sales and distributors’ activities that may fall within the purview of the FCPA, its books and records provisions and its anti-bribery provisions.

The standard of intent and knowledge in anti-bribery cases is minimal. Intent and knowledge are usually inferred from that fact that bribery took place. The accounting provisions do not require intent. Violations of the FCPA’s anti-bribery provisions for corporations and other business entities are subject to a fine of up to $2 million and officers, directors, stockholders, employees, and agents are subject to a fine of up to $100,000 and imprisonment for up to five years. Other countries, including the United Kingdom and other OECD Anti-Bribery Convention members, have similar anti-corruption regulations, such as the United Kingdom Anti-Bribery Act.

When marketing our diagnostic tests outside of the United States, we may be subject to foreign regulatory requirements governing human clinical testing, prohibitions on the import of tissue necessary for us to perform our diagnostic tests or restrictions on the export of tissue imposed by countries outside of the United States or the import of tissue into the United States, and marketing approval. These requirements vary by jurisdiction, differ from those in the United States and may in some cases require us to perform additional pre-clinical or clinical testing. In many countries outside of the United States, coverage, pricing and reimbursement approvals are also required.

Market access, sales and marketing of medical devices in non-U.S. countries are subject to foreign regulatory requirements that vary widely from country to country. For example, in the European Economic Area (EEA), a medical device must meet the Medical Devices

Directive’s (MDD)/In Vitro Medical Devices Directive’s (IVDD) Essential Requirements or, applicable on May 26, 2021, the Medical Devices Regulation’s (MDR) / applicable on May 26, 2022, In Vitro Medical Devices Regulation’s (IVDR) General Safety and Performance Requirements which apply to it, taking into account its intended purpose as defined by the data supplied by the manufacturer on the label, in the instructions for use or in promotional or sales materials or statements and as specified by the manufacturer in the clinical evaluation. Before placing a medical device on the EEA market, the manufacturer must draw up a declaration of conformity, certifying that the device complies with the MDD/IVDD/MDR/IVDR, and must then affix the CE mark. For medium and high-risk devices as well as low risk devices that are placed on the market in sterile condition, have a measuring function, or are reusable surgical instruments, the manufacturer must obtain a CE Certificate from a notified body. The notified body typically audits and examines the device’s technical documentation, including the clinical evaluation, and the quality system for the manufacture, design and final inspection of the relevant device before issuing a CE Certificate. Following the issuance of this CE Certificate, manufacturers may draw up the declaration of conformity and affix the CE mark to the devices covered by this CE Certificate.

In the EEA, manufacturers of medical devices must document in a clinical evaluation report (CER) the evaluation of the clinical data related to the device. The CER is part of the device’s technical file. The evaluation shall document that the applicable Essential Requirements/General Safety and Performance Requirements are met and document the evaluation of the undesirable side-effects and the acceptability of the benefit-risk ratio. The CER must be updated based on information from the post-market surveillance and vigilance activities related to the device. The CER shall consist, inter alia, of analyzed clinical data collected from a clinical investigation of the device, or the results of other studies on substantially equivalent devices. Reliance on “substantially equivalent” devices is very restrictive and requires, inter alia, that the manufacturer has full access to the technical documentation of the equivalent device on an ongoing basis and, if the “equivalent device” is not its own, that the manufacture has in place a contract with the manufacturer of the “equivalent device.”

Similar requirements apply in the UK. For access to the UK market, manufacturers must obtain a UKCA Certificate and affix a UKCA mark to their medical devices. Initially, the government stated the CE mark will be accepted in the UK until July 1, 2023. However, on July 1, 2023, the government updated their guidance for regulating medical devices stating their intention to extend recognition and acceptance of the CE marking for placing most goods on the market in Great Britain, indefinitely, if the device was placed on the EU market before January 1, 2021.

Device Classification

Under the FDCA, medical devices are classified into one of three classes: Class I, Class II or Class III, depending on the degree of risk to patients that is associated with each medical device and the amount of oversight needed to provide reasonable assurances with respect to safety and effectiveness of the medical device.

On January 31, 2024, the FDA’s Center for Devices and Radiological Health (CDRH) announced that the Center intends to initiate the reclassification process for most IVD tests that are currently Class III (high risk) into Class II (moderate risk). The majority of these tests are infectious disease and companion diagnostic IVDs. Reclassification would allow manufacturers of certain types of tests to seek marketing clearance through the less burdensome premarket notification (510(k)) pathway rather than the premarket approval pathway, the most stringent type of FDA medical device review.

Class I includes devices with the lowest risk to the patient and are those for which safety and effectiveness can be reasonably assured by adherence to a set of FDA regulations, referred to as the General Controls for Medical Devices, which require compliance with the applicable portions of the FDA’s QSR, facility registration and product listing, reporting of adverse events and malfunctions, and appropriate, truthful and non-misleading labeling and promotional materials. Some Class I devices also require premarket clearance by the FDA through the 510(k) premarket notification process described below. Most Class I products are exempt from the premarket notification requirements.

Class II devices are subject to the General Controls as well as any special controls deemed necessary by the FDA to ensure the safety and effectiveness of the device. These special controls can include performance standards, patient registries, FDA guidance documents and post-market surveillance. Most Class II devices are subject to premarket review and clearance by the FDA. Premarket review and clearance by the FDA for Class II devices is accomplished through the 510(k) premarket notification process, although some Class II devices are exempt from the 510(k) requirements.

Class III devices include devices deemed by the FDA to pose the greatest risk: such as life-supporting or life-sustaining devices, implantable devices, or those deemed novel and not substantially equivalent to a predicate device following the 510(k) process. CDx tests are regularly considered Class III devices.

Premarket Submission Process

Unless a statutory or regulatory exemption or enforcement discretion policy applies, before a new medical device, or a new intended use of, claim for, or significant modification to an existing device, can be marketed in the United States, the manufacturer must obtain the FDA’s: (1) permission for commercial distribution under section 510(k) of the FDCA (510(k) clearance); or (2) approval of a Premarket Approval Application (PMA); or (3) De Novo classification and authorization. These processes can be resource intensive, expensive, and lengthy, and require payment of significant user fees.

Under the 510(k) clearance process, the manufacturer must submit to the FDA a premarket notification, demonstrating that the device is “substantially equivalent” to a legally marketed predicate device. A predicate device is a legally marketed device that is not subject to a PMA, i.e., a Class I or II device that was legally marketed prior to May 28, 1976 (pre-amendments device), a device that has been reclassified from Class III to Class II or I, or a device that was previously found substantially equivalent through the 510(k) process. To be “substantially equivalent,” the proposed device must have the same intended use as the predicate device, and either have the same technological characteristics as the predicate device or have different technological characteristics and not raise different questions of safety or effectiveness than the predicate device. Premarket notifications typically include bench, analytical, and preclinical data. Clinical data is sometimes required to support substantial equivalence. If a manufacturer obtains a 510(k) clearance for its device and then makes a modification that could significantly affect the device’s safety or effectiveness or constitutes a major change or modification in the intended use of the device, then a new clearance, authorization or approval may be required.

By statute, the FDA is required to complete its review of a 510(k) notification within 90 days of receiving the 510(k) notification. As a practical matter, clearance often takes longer, and clearance is never assured. Although many 510(k) premarket notifications are cleared without clinical data, the FDA may require further information, including clinical data, to make a determination regarding substantial equivalence, which may significantly prolong the review process. If the FDA agrees that the device is substantially equivalent, it will grant clearance to commercially market the device. If the FDA determines that the device is not “substantially equivalent” to a predicate device, or if the device is automatically classified into Class III, the device sponsor must then fulfill the much more rigorous, costly, and time-consuming PMA approval process or seek reclassification of the device through the De Novo process.

If a predicate device is not available, the FDA allows the submission of a direct De Novo petition. This procedure allows a manufacturer whose novel device is automatically classified into Class III to request down-classification of its medical device into Class I or Class II on the basis that the device presents low or moderate risk, rather than requiring the submission and approval of a PMA application. A De Novo request includes a description of the device, a discussion of the general controls and any specific controls recommended to provide reasonable assurance of the safety and effectiveness of the device, a description of the probable benefits of the device when compared to the probable risks when the device is used as intended, non-clinical data including bench performance and animal testing, technical information about the device, and clinical data (if applicable). The FDA’s goal is to review a De Novo request within 150 review days after receiving the petition. As with a 510(k) submission or PMA, the length of the review can be prolonged if the FDA requests additional information from the applicant.

To obtain a PMA, the applicant must submit data and information demonstrating reasonable assurance of the safety and effectiveness of the device for its intended use to the FDA’s satisfaction. Accordingly, a PMA typically includes, but is not limited to, extensive technical information regarding device design and development, pre-clinical and clinical trial data, manufacturing information, labeling, and financial disclosure information for the clinical investigators in device studies. The PMA application must provide valid scientific evidence that demonstrates to the FDA’s satisfaction a reasonable assurance of the safety and effectiveness of the device for its intended use.

Once filed as a PMA, the FDA has 180 days to review the filed PMA application, although the review of an application more often occurs over a significantly longer period of time. During this review period, the FDA may request additional information or clarification of information already provided, and the FDA may issue a major deficiency letter to the applicant, requesting the applicant’s response to deficiencies communicated by the FDA.

Prior to approval of a PMA, the FDA may conduct inspections of any clinical trial data and clinical trial sites, as well as inspections of any manufacturing facility and processes. The FDA can delay, limit or deny approval of a PMA application for many reasons, including (1) the device may not be shown safe or effective to the FDA’s satisfaction; (2) the data from pre-clinical studies and/or clinical trials may be found unreliable or insufficient to support approval; (3) the manufacturing process or facilities may not meet applicable requirements; and (4) changes in FDA approval policies or adoption of new regulations may require additional data.

If the FDA evaluation of a PMA is favorable, the FDA will issue either an approval letter, or an approvable letter, the latter of which usually contains a number of conditions that must be met in order to secure final approval of the PMA. When and if those conditions have been fulfilled to the satisfaction of the FDA, the agency will issue a PMA approval letter authorizing commercial marketing of the device, subject to the conditions of approval and the limitations established in the approval letter. The FDA also may determine that additional tests or clinical trials are necessary, in which case the PMA approval may be delayed for several months or years while the trials are conducted and data is submitted in an amendment to the PMA, or the PMA is withdrawn and resubmitted when data is available. The PMA process can be expensive, uncertain and lengthy. A number of devices for which the FDA approval has been sought by other companies have never been approved by the FDA for marketing. New PMA applications or PMA supplements are required for any modifications to the manufacturing process, equipment or facility, quality control procedures, sterilization, packaging, expiration date, labeling, device specifications, ingredients, materials or design of a device that has been approved through the PMA process.

As a condition of PMA approval, the FDA may also require some form of post-approval study or post-market surveillance, whereby the applicant conducts a follow-up study or follows certain patient groups for a number of years and makes periodic reports to the FDA on the clinical status of those patients when necessary to protect the public health or to provide additional or longer-term safety and

effectiveness data for the device. The FDA may also approve a PMA application with other post-approval conditions intended to ensure the safety and effectiveness of the device, such as, among other things, restrictions on labeling, promotion, sale, distribution and use.

The 510(k), De Novo or PMA processes can be expensive, lengthy and unpredictable. The FDA’s 510(k) clearance process usually takes from three to 12 months, but can last longer. The process of obtaining a PMA is much more costly and uncertain than the 510(k)-clearance process and generally takes from one to three years, or even longer, from the time the application is filed with the FDA. In addition, a PMA generally requires the performance of one or more clinical trials. Despite the time, effort and cost, a device may not be approved or cleared by the FDA. Any delay or failure to obtain necessary regulatory clearances or approvals could harm our business. Furthermore, even if we are granted regulatory clearances or approvals, they may include significant limitations on the indicated uses for the device, which may limit the market for the device.

Companion Diagnostics and the Premarket Process

We believe that several of our future product candidates may include a companion diagnostic (CDx), which is defined as an IVD that provides information that is essential for the safe and effective use of the therapeutic product. CDx’s can identify patients who are most likely to benefit from a particular therapeutic product, identify patients likely to be at increased risk for serious side effects as a result of treatment with a particular therapeutic product, or monitor response to treatment with a particular therapeutic product for the purpose of adjusting treatment to achieve improved safety or effectiveness.

A CDx is often developed and approved or cleared contemporaneously with the therapeutic, and the use of the CDx is stipulated in the labeling of both the CDx and the corresponding therapeutic product. CDx’s are generally regulated as Class III medical devices by the FDA and are therefore most often subject to the PMA approval process. While the FDA supports contemporaneous marketing authorizations, if there are any deficiencies in the submissions, the FDA may place a PMA review of a CDx on hold or request additional testing, which could potentially delay the approval of the corresponding new drug application or the marketing authorization of the CDx, or otherwise complicate the review process. The FDA may also require an application for the CDx to be separate from the drug approval process, and this could also potentially delay the approval of any new drug application or the CDx, or complicate the review process.

The FDA issued guidance in July 2016 for the co-development of CDx tests with a therapeutic product, which has remained in draft format. FDA issued and finalized a separate guidance in April 2020 specific to oncology CDx tests, “Developing and Labeling In vitro Companion Diagnostic Devices for a Specific Group of Oncology Therapeutic Products.” The guidance is meant to guide the development of CDx products in a way that results in labeling for a specific group of oncology therapeutic products, rather than a single therapeutic product.

Post-Market FDA Regulation

Even if regulatory clearance, authorization or approval of a device is granted, the FDA may impose limitations on the uses and indications for which the device may be labeled and promoted, and the device remains subject to significant regulatory requirements. Medical devices may be marketed only for the uses and indications for which they are cleared, authorized, or approved. After a device, including a device exempt from FDA premarket review, is placed on the market, numerous post-market regulatory requirements apply, and the FDA has broad authority to enforce these requirements. Medical device manufacturers are subject to unannounced inspections by the FDA and other state, local and foreign regulatory authorities to assess compliance with the QSR and other applicable regulations, and these inspections may include the manufacturing facilities of any suppliers. Failure to comply with applicable regulatory requirements can result in enforcement action by the FDA, which may include sanctions such as: warning letters, fines, injunctions, consent decrees and civil penalties; unanticipated expenditures, including requirements to repair, replace, and/or refund the cost of the devices, recall or seizure of our products; operating restrictions, partial suspension or total shutdown of production; the FDA’s refusal of our requests for 510(k) clearance, De Novo classification, or PMA of new products, new intended uses or modifications to existing products; the FDA’s refusal to issue certificates to foreign governments needed to export products for sale in other countries; and withdrawing 510(k) clearance or PMAs that have already been granted and criminal prosecution. In the event that a supplier fails to maintain compliance with the FDA’s or our quality requirements, we may have to qualify a new supplier and could experience manufacturing delays as a result.

Federal and State Fraud and Abuse Laws

We are subject to federal fraud and abuse laws such as the federal Anti-Kickback Statute (AKS), the federal prohibition against physician self-referral (Stark Law), the Eliminating Kickbacks in Recovery Act (EKRA), and the federal False Claims Act (FCA). We are also subject to similar state and foreign fraud and abuse laws.

The AKS (Social Security Act § 1128B(b)) prohibits 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 item or service that may be reimbursable, in whole or in part, under a federal healthcare program, such as Medicare or Medicaid. There are a number of statutory exceptions and regulatory safe harbors to the AKS that provide protection from AKS liability to arrangements that fully satisfy the applicable requirements.

EKRA (18 USC § 220) prohibits knowingly and willfully soliciting, receiving, offering or paying remuneration, directly or indirectly, in return for the referral of a patient to, or in exchange for an individual using the services of certain entities, including laboratories, if the services are covered by a health care benefit program. The term “health care benefit program” is broadly defined such that EKRA extends to referrals reimbursed by both governmental and commercial third-party payers. EKRA includes a number of statutory exceptions that provide protection from EKRA liability if the applicable requirements are met.

The Stark Law (Social Security Act § 1877) generally prohibits, among other things, clinical laboratories and other so-called “designated health services” entities from billing Medicare for any designated health services when the physician ordering the service, or any member of such physician’s immediate family, has a financial relationship, such as a direct or indirect investment interest in or compensation arrangement with the billing entity, unless the arrangement meets an exception to the prohibition. The Stark Law also prohibits physicians from making such referrals to a designated health services entity. There are also similar state laws that apply where Medicaid and/or commercial payers are billed.

The FCA (31 USC § 3729) imposes penalties against individuals or entities for, among other things, knowingly presenting, or causing to be presented, claims for payment to the government that are false or fraudulent, or knowingly making, using or causing to be made or used a false record or statement material to such a false or fraudulent claim, or knowingly concealing or knowingly and improperly avoiding, decreasing, or concealing an obligation to pay money to the federal government. This statute also permits a private individual acting as a “qui tam” whistleblower to bring actions on behalf of the federal government alleging violations of the FCA and to share in any monetary recovery. FCA liability is potentially significant in the healthcare industry because the statute provides for treble damages and mandatory penalties per false claim or statement for penalties assessed.

Other federal statutes pertaining to healthcare fraud and abuse include the civil monetary penalties statute, which prohibits, among other things, the offer or payment of remuneration to a Medicaid or Medicare beneficiary that the offeror or payer knows or should know is likely to influence the beneficiary to order or receive a reimbursable item or service from a particular provider, practitioner, or supplier, and contracting with an individual or entity that the person knows or should know is excluded from participation in a federal health care program. In addition, federal criminal statutes created by the Health Insurance Portability and Accountability Act (HIPAA) prohibit, among other things, knowingly and willfully executing or attempting to execute a scheme to defraud any healthcare benefit program or obtain by means of false or fraudulent pretenses, representations or promises any money or property owned by or under the control of any healthcare benefit program in connection with the delivery of or payment for healthcare benefits, items or services.

In addition to these federal laws, there are often similar state anti-kickback and false claims laws that typically apply to arrangements involving reimbursement by a state-funded Medicaid or other health care program. Often, these laws closely follow the language of their federal law counterparts, although they do not always have the same exceptions or safe harbors. In some states, these anti-kickback laws apply with respect to all payers, including commercial payers.

A number of states have enacted laws that require pharmaceutical and medical device companies to monitor and report payments, gifts and other remuneration made to physicians and other healthcare providers, and, in some states, marketing expenditures. In addition, some state statutes impose outright bans on certain manufacturer gifts to physicians or other health care professionals. Some of these laws, referred to as “aggregate spend” or “gift” laws, carry substantial fines if they are violated.

Efforts to ensure that our business arrangements with third parties will comply with applicable healthcare laws and regulations will involve substantial costs and extensive annual trainings for all of our employees and contractors. 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 participation in 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, any of which could adversely affect our ability to operate our business and our results of operations. If any of the physicians or other healthcare providers or entities with whom we do business is found to be not in compliance with applicable laws, they may be subject to criminal, civil or administrative sanctions, including exclusions from government-funded healthcare programs.

Anti-Corruption

The FCPA and similar international bribery laws make it unlawful for persons or entities to make payments to foreign government officials to assist in obtaining and maintaining business. Specifically, the anti-bribery provisions of the FCPA prohibit any offer, payment, promise to pay, or authorizing the payment of money or anything of value to any person, while knowing that all or a portion of such money or thing of value will be offered, given or promised, directly or indirectly, to a foreign official to do or omit to do an act in violation of his or her duty, or to secure any improper advantage in order to assist in obtaining or retaining business for or with, or directing business, to any person. In addition to the anti-bribery provisions of the FCPA, the statute also contains accounting requirements designed to operate in tandem with the anti-bribery provisions. Covered companies are required to make and keep books and records that accurately and fairly reflect the transactions of the company and devise and maintain an adequate system of internal accounting controls. With our international operations through our third-party partnerships, we could incur significant fines and penalties, as well as criminal liability, if we fail to comply with either the anti-bribery or accounting requirements of the FCPA, or

similar international bribery laws. Even an unsuccessful challenge of our compliance with these laws could cause us to incur adverse publicity and significant legal and related costs. We successfully passed our latest FCPA compliance review in 2023 with no findings.

Privacy and Data Protection Laws

Numerous federal and state laws and regulations, including HIPAA, as amended by the Health Information Technology for Economic and Clinical Health (HITECH) Act, govern the collection, dissemination, security, use and confidentiality of protected health information (PHI) and personal information. In the course of performing our business we obtain personal information, including PHI. Laws and regulations relating to privacy, data protection, and consumer protection are evolving and, in some cases, particularly with regard to newer laws, may be subject to potentially differing interpretations. Under HIPAA and HITECH, the Department of HHS issues regulations that establish uniform standards governing the conduct of certain electronic healthcare transactions and requirements for protecting the privacy and security of PHI, used or disclosed by covered entities (CEs) and their authorized business associates (BAs). Because we are a health care provider that electronically transmits health care information, we are a CE as defined by HIPAA. Our subcontractors that create, receive, maintain, transmit or otherwise process PHI on our behalf are HIPAA BAs and must also comply with HIPAA, as applicable.

HIPAA and HITECH include the privacy and security rules, breach notification requirements and electronic transaction standards. The privacy rule governs the use and disclosure of PHI, generally prohibits the use or disclosure of PHI except as permitted under the rule, and mandates certain safeguards to protect the privacy of PHI. The privacy rule also sets forth individual rights, such as the right to access or amend certain records containing such individual’s PHI, or to request restrictions on the use or disclosure of such individual’s PHI. The security rule requires CEs and BAs to safeguard the confidentiality, integrity, and availability of electronically transmitted or stored PHI (also referred to as ePHI) by implementing administrative, physical and technical safeguards. Under HIPAA’s breach notification rule, a CE must notify individuals, the Secretary of HHS, and in some circumstances, the media of certain breaches of unsecured PHI or ePHI, and similar breach notification provisions apply to certain BAs under the HITECH Act.

Penalties for failure to comply with a requirement of HIPAA and HITECH vary depending on the number and nature of the violations and any history of prior violations, but can be significant and include civil monetary or criminal penalties. HIPAA is enforced by the Department of Health and Human Services, Office for Civil Rights (HHS OCR), and HIPAA also authorizes state attorneys general to file suit on behalf of their residents for violations. Courts are able to award damages, costs and attorneys’ fees related to violations of HIPAA in such cases. While HIPAA does not create a private right of action allowing individuals to file suit in civil court for violations of HIPAA, its standards have been used as the basis for duty of care cases in state civil suits such as those for negligence or recklessness in improper use, access to or disclosure of PHI. In addition, HIPAA provides for HHS OCR to conduct periodic compliance audits of CEs and BAs for compliance with the HIPAA privacy and security standards and breach notification rules. It also tasks HHS with establishing a methodology whereby harmed individuals who were the victims of breaches of unsecured PHI may receive a percentage of the civil monetary penalty paid by the violator.

In addition, we may be subject to state privacy, cybersecurity, 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, in addition to HIPAA and HITECH, sets forth standards with which regulated California health care providers must abide. Colorado has enacted the Colorado Privacy Act, and Virginia has enacted the Consumer Data Protection Act, both of which also have standards that supplement Federal data protection requirements. 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 in regards to personal information treatment, which may complicate compliance efforts. For instance, the California Consumer Privacy Act (CCPA), as amended by the passage of the California Privacy Rights Act (CPRA), among other things, gives California residents rights to access and delete their personal information, opt out of certain personal information sharing and receive detailed information about how their personal information is used by requiring covered companies to provide disclosures to California consumers (as that term is broadly defined) and provide such consumers ways to opt-out of certain sales of personal information. The CCPA provides for civil penalties for violations, as well as a private right of action for data breaches that is expected to increase data breach litigation. Although there are certain exemptions for PHI and clinical trial data, the CCPA’s implementation standards and enforcement practices are likely to remain uncertain for the foreseeable future and the CCPA may increase our compliance costs and potential liability. Several other states have enacted privacy laws, several additional states have introduced privacy bills, and further law and regulations are under consideration at the federal level. If passed, such laws may have potentially conflicting requirements that could continue to make compliance challenging and costly.

Additionally, the Federal Trade Commission (FTC) and state attorneys general enforce consumer protection laws that prohibit unfair and deceptive acts and practices, including Section 5 of the FTC Act, which creates standards for the collection, use, dissemination and security of health-related and other personal information. Claims of unfair or deceptive trade practices regarding privacy and security can lead to significant liabilities and consequences, including regulatory investigations, penalties, fines and orders as well as civil claims, which could impact our data practices and operations or cause reputational damage.

We may also be subject to laws and regulations in foreign countries covering data privacy and other protection of health and employee information that may add additional compliance burden and complexity. For example, in the EEA, the collection and use of personal

data is governed by the European Union's General Data Protection Regulation (GDPR). In the United Kingdom, the GDPR has been adopted in substantially the same form, however the UK may potentially make revisions in the coming years. The GDPR, together with national legislation, regulations and guidelines of the EU member states and the United Kingdom governing the processing of personal data, impose strict obligations and restrictions on the ability to collect, analyze, store, transfer and otherwise process personal data. European and United Kingdom data protection authorities may interpret the GDPR and national laws differently and impose additional requirements, which adds to the complexity of processing personal data in or from the EEA or United Kingdom. Guidance on implementation and compliance practices is often updated or otherwise revised. GDPR applies extra-territorially under certain circumstances and imposes stringent requirements on controllers and processors of personal data, including, for example, requirements to ensure a legal bases to process personal information, provide robust disclosures to individuals, facilitate data subject rights, provide data security breach notifications within 72 hours after discovering a breach in certain circumstances, limit retention of personal information and apply enhanced protections to health data and other categories of sensitive personal information. The GDPR also has requirements around international transfers of personal data. Requirements around transfers to the United States and other jurisdictions have increased since a July 2020 decision by the Court of Justice of the European Union invalidated the Privacy Shield as a basis to transfer personal data from Europe to the United States, and added requirements for reliance on Standard Contractual Clauses. Regulatory guidance on requirements for international transfers, and other GDPR compliance matters, continues to evolve; for example, in July 2023, the European Commission completed adoption of a new adequacy decision for data flows to the United States. However, it is widely expected that the new adequacy decision will itself face scrutiny from the Court of Justice, underscoring that GDPR compliance is an ongoing endeavor. Failure to comply with the requirements of the GDPR may result in fines of up to €20 million or up to 4% of the total worldwide annual turnover of our preceding fiscal year, whichever is higher, and other administrative penalties. To comply with the GDPR and other applicable international data protection laws and regulations, we may be required to put in place additional mechanisms ensuring compliance, which may result in other substantial expenditures.

Cybersecurity

Our business relies on secure and continuous processing of information and the availability of our IT networks and IT resources, as well as critical IT vendors that support our technology, research and other data processing operations. While we take steps to protect our systems and data, security incidents, data breaches, computer malware and computer hacking attacks have become more prevalent across industries, including the life sciences sector, and may occur on our systems or those of our third-party service providers. Unauthorized persons may in the future be able to exploit weaknesses in the security systems of our (or our third-party service providers) IT networks and gain access to PHI and other personal information, sensitive trade secrets, or other proprietary information. Any wrongful use or disclosure of PHI, other personal information, trade secrets or other proprietary information by us or our third-party service providers could subject us to regulatory fines or penalties, third-party claims or otherwise could adversely affect our business and results of operations. Although HIPAA and the regulations promulgated thereunder do not provide for a private right of action, failures to adequately protect PHI or our IT systems could be viewed as violations of the HIPAA security rule or violations of other applicable information security laws, regulations, contractual obligations or industry standards, and could further result in costly data breach notification obligations that negatively impact our reputation.

Moreover, data cybersecurity incidents or data breaches, as well as attacks on our IT systems, could result in operational disruptions or data loss or corruption that could adversely impact our business and operations, resulting in substantial investment of resources to investigate, recover and remediate and subject us to heightened regulatory scrutiny. See Item 1C. "Cybersecurity" for additional information on our cybersecurity practices.

Healthcare Reform

In March 2010, the Patient Protection and Affordable Care Act (ACA) was enacted in the United States, which provided a number of substantial changes to the way healthcare is financed both by governmental and private insurers. Since its enactment, the Trump administration has sought to modify, repeal, or otherwise invalidate all, or certain provisions of, the ACA. Other legislative changes have been proposed and adopted in the United States since the ACA was enacted to reduce healthcare expenditures.

In July 2025, the One Big Beautiful Bill Act (OBBBA) was enacted, and imposes significant reductions in the funding of the Medicaid program. Although the full impact of the OBBBA is uncertain at this time, changes are expected to reduce enrollment in state Medicaid programs. The timing and magnitude of the reductions may vary by state depending on how quickly states implement the changes, how states may adapt their future tax and Medicaid funding policies in response, as well as other macroeconomic factors.

Environmental, Health and Safety Regulations

We are subject to various federal, state, local, and foreign environmental, health and safety laws and regulations and permitting and licensing requirements. Such laws include those governing laboratory practices, the generation, storage, use, manufacture, handling, transportation, treatment, remediation, release and disposal of, and exposure to potential blood-borne pathogens, hazardous materials and associated wastes. Our operations involve the generation, use, storage and disposal of hazardous materials as well as regulated medical waste, and the risk of injury, contamination or non-compliance with environmental, health and safety laws and regulations or permitting or licensing requirements cannot be eliminated. Compliance with environmental laws and regulations has not had a material effect on our capital expenditures, earning or competitive position. To date, there has not been a for cause OSHA or EPA inspection.

Corporate Information

We were incorporated in Delaware in 2005 as Elston Technologies, Inc. Our principal executive offices are located at 919 West Dillon Rd, Louisville, CO 80027, and our telephone number is (303) 417-0500. On June 20, 2006, we changed our name to Biodesix, Inc.

Implications of Being a Smaller Reporting Company

We are a “smaller reporting company” as defined in Item 10(f)(1) of Regulation S-K. Smaller reporting companies may take advantage of certain reduced disclosure obligations, including, among other things, providing only two years of audited financial statements. We will remain a smaller reporting company until the last day of the fiscal year in which (i) the market value of our common stock held by non-affiliates exceeds $250 million as of the end of that year’s second fiscal quarter, or (ii) our annual revenues exceeded $100 million during such completed fiscal year and the market value of our common stock held by non-affiliates exceeds $700 million as of the end of that year’s second fiscal quarter. To the extent we take advantage of such reduced disclosure obligations, it may also make comparison of our financial statements with other public companies difficult or impossible.

For certain risks related to our status as a smaller reporting company, see “Risk Factors—General Risk Factors—We are a “smaller reporting company,” and the reduced disclosure requirements applicable to smaller reporting companies may make our common stock less attractive to investors.”

Human Capital Resources

Our culture is underpinned by our cultural beliefs including an unwavering commitment to inclusion and diversity. We are committed to fostering a diverse and inclusive workplace that attracts and retains exceptional talent offering opportunities for our team members to grow and develop in their careers, supported by a competitive suite of benefits and health and wellness programs. We regularly engage our team members in quarterly all-hands meetings to align and focus on the current state of affairs of our business, our partnerships, new products, clinical trials, and other pertinent information about our business. We engage our team members in programs such as peer recognition and recruitment that focuses on recognizing outstanding individual contributions to company performance, cultural fit of new team members and acknowledging the diversity of our team to ensure our team members feel valued and can do their best work. We have a national annual community service initiative, “Biodesix Gives Back” that allows each team member to invest ten hours of paid community service to organizations of their choosing.

As of December 31, 2025, we had approximately 334 full-time and part-time employees located in the United States. The majority of our team member base is located in proximity to our corporate office and testing facilities located in Louisville, Colorado and our laboratory in De Soto, Kansas.

Diversity, Equity and Inclusion

We believe that a diverse employee population, including cultural background, gender, ethnicity, sexual orientation and lived experiences, is critical to our success since we need to represent our patients, providers, and partners. Our employees are encouraged to leverage their personal strengths and experiences to continually innovate and contribute to the development of new ideas and process improvements that drive better experiences for our partners.

Employee Engagement

Our company culture emphasizes the satisfaction and well-being of our team members and a diverse, engaged workforce. We solicit the opinion and views of our team members through surveys and peer focus groups. We have an established and valued peer recognition culture. Teammates recognize other teammates publicly for their support and contributions fostering collaboration, engagement and retention. We regularly review feedback we receive on our operating principles to determine if any modifications are needed. In 2025, we adopted Operating Principles to reflect a renewed focus and commitment on Team, Impact, and Excellence. Additionally, the Company annually celebrates our top sales performers through our President’s Club and other top Biodesix performers as nominated by fellow team members through demonstration of our Operating Principles as the standard for how we work together.

Training and Development

We invest in our team members' career growth and provide team members with a wide range of development opportunities, including face-to-face, virtual, and self-directed learning, mentoring, coaching, and external development.

Health, Safety and Wellness

The physical health, financial stability, life balance and mental health of each of our team members is vital to our success. We sponsor several cancer awareness activities in our local communities to bring engagement and awareness of health, safety and wellness to positively impact lives. We provide an Employee Assistance Program to enhance physical, financial, and mental well-being for all our team members.

Pay Equity

The main objective of our compensation program is to provide a compensation package that will attract, retain, motivate, and reward superior team members who operate in a highly competitive and technologically challenging environment. We emphasize overall Company performance and provide equity incentives for all team members to align their financial interests with the interests of shareholders. In addition, we offer an employee stock purchase plan to all employees in which participants are eligible to purchase shares at a discount to market. We think like customers and act like owners.

Biodesix seeks fairness in total compensation. We benchmark with external comparisons, internal comparisons and look at the relationship between team member roles within the organization. We also review our compensation practices, both in terms of our overall workforce and individual team members, to ensure our pay is fair and equitable. We currently have no pay disparities based on gender, race, or ethnicity.

Available Information

We file with, or furnish to, the Securities and Exchange Commission (SEC) reports including our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to those reports pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended. These reports are available free of charge on our corporate website (www.biodesix.com) as soon as reasonably practicable after they are electronically filed with or furnished to the SEC. Copies of any materials we file with the SEC can be obtained at www.sec.gov. The information provided on our website (or any other website referred to in this report) is not part of this report and is not incorporated by reference as part of this Annual Report on Form 10-K.

Item 1A. Risk Factors.

Risk Factors Summary

The following is a summary of the principal risks that could adversely affect our business, operations and financial results. This summary does not address all of the risk that we face and should be read in conjunction with the entire Risk Factors section below beginning at “Risks Related to Our Business and Industry” within this Item 1A. "Risk Factors."

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We have a history of net losses, and we expect to continue to incur losses for the foreseeable future. If we achieve profitability, we may not be able to sustain it;

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The commercial success of our current and future diagnostic tests and services and our revenue growth depends upon attaining significant market acceptance among payers, providers, clinics, patients, and biopharmaceutical companies;

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We may encounter difficulties in managing our growth, which could disrupt our operations;

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If we fail to retain sales and marketing personnel and, as we grow, fail to increase our sales and marketing capabilities or develop broad awareness of our diagnostic tests in a cost-effective manner, we may not be able to generate revenue growth;

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If we cannot maintain our current relationships, or enter into new relationships, with biopharmaceutical companies, our revenue prospects could be reduced;

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Our commercial success and revenue growth are highly dependent on the demand for, and increased adoption of, our diagnostic tests, which are subject to a number of risks and uncertainty;

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We need to ensure strong product performance and reliability to maintain and grow our business;

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We depend upon third-party suppliers, including single source suppliers, making us vulnerable to supply problems and price fluctuations;

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Natural or man-made disasters or other similar events may significantly disrupt our business, and negatively impact our business, financial condition and results of operations;

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Our industry is subject to rapid change, which could make our solutions and the diagnostic tests we develop and services we offer obsolete. If we are unable to continue to innovate and improve our diagnostic tests and services we offer, we could lose customers or market share;

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Any failure to offer high-quality support for our diagnostic tests and services may adversely affect our relationships with providers and negatively impact our reputation among patients and providers, which may adversely affect our business, financial condition and results of operations;

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We may face additional costs, loss of revenue, significant liabilities, harm to our brand, decreased use of our products or services and business disruption if there are any security or data privacy breaches or other unauthorized or improper access.

Risk Factors

Our operations and financial results are subject to various risks and uncertainties that could adversely affect our business, financial condition, results of operations and cash flows. All of the risks described below should be carefully considered together with the other information contained and incorporated by reference in this report.

Risks Related to our Business and Industry

We have a history of net losses, and we expect to continue to incur losses for the foreseeable future. If we achieve profitability, we may not be able to sustain it.

We have incurred losses since our inception and expect to continue to incur losses for the foreseeable future. We reported net losses of $35.3 million and $42.9 million for the years ended December 31, 2025 and 2024, respectively. As a result of these losses, as of December 31, 2025, we had an accumulated deficit of approximately $497.8 million.

We expect that our sales and marketing, research and development, regulatory and other expenses will continue to increase as we expand our marketing efforts for our diagnostic tests and services, expand existing relationships with our customers, obtain regulatory clearances or approvals or certifications for future enhancements to our existing diagnostic tests and services and conduct further clinical trials. In addition, we expect our general and administrative expenses to increase due to the additional costs associated with scaling our business operations and testing capacity as well as being a public company, including due to legal, accounting, insurance, exchange listing and compliance, investor relations and other expenses. As a result, we expect to continue to incur operating losses and may never achieve profitability. We will need to generate significant additional revenue in order to achieve and sustain profitability. Even if we achieve profitability, we cannot be sure that we will remain profitable for any substantial period of time. If we do not achieve or sustain profitability, it will be more difficult for us to finance our business and accomplish our strategic objectives, either of which would have a material adverse effect on our business, financial condition and results of operations.

Our commercial success depends, in part, on the acceptance of our diagnostic tests and services as being safe and relatively simple for medical personnel to learn and use, clinically flexible, operationally versatile and, with respect to providers and payers, cost effective. We cannot predict how quickly, if at all, payers, providers, clinics and patients will accept future diagnostic tests and services or, if accepted, how frequently they will be used. These constituents must believe that our diagnostic tests offer benefits over other available alternatives.

The degree of market acceptance of our current and future diagnostic tests and services depends on a number of factors, including:

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whether there is adequate utilization of our tests by clinicians, biopharmaceutical companies and other target groups based on the potential and perceived advantages of our diagnostic tests over those of our competitors;

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the convenience and ease of use of our diagnostic tests relative to those currently on the market;

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the effectiveness of our sales and marketing efforts;

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our ability to provide incremental data that show the clinical benefits and cost effectiveness, and operational benefits, of our diagnostic tests;

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the coverage and reimbursement acceptance of our products and services;

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pricing pressure, including from group purchasing organizations (GPOs), seeking to obtain discounts on our diagnostic tests based on the collective bargaining power of the GPO members;

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negative publicity regarding our or our competitors’ diagnostic tests resulting from defects or errors;

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the accuracy of our tests relative to those of our competitors;

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product labeling or product insert requirements by the FDA or other regulatory authorities or conformity assessment bodies; and

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limitations or warnings contained in the labeling cleared or approved by the FDA or other regulatory authorities or conformity assessment bodies.

Additionally, even if our diagnostic tests achieve widespread market acceptance, they may not maintain that market acceptance over time if competing diagnostic tests or technologies, which are more cost effective or are received more favorably, are introduced. Failure to achieve or maintain market acceptance and/or market share would limit our ability to generate revenue and would have a material adverse effect on our business, financial condition and results of operations.

We may encounter difficulties in managing our growth, which could disrupt our operations.

As of December 31, 2025, we had approximately 334 full and part-time employees. Over the next several years, we expect to continue to significantly increase the number of our employees and the scope of our operations, particularly in the areas of sales, marketing and reimbursement, product development, regulatory affairs and other functional areas, including finance, accounting, quality and legal. Additionally, we expect to expand our testing capacity as we commercialize additional diagnostic tests. To manage our anticipated future growth, we must continue to implement and improve our managerial, operational quality and financial systems, expand our facilities and continue to recruit and train additional qualified personnel. Due to our limited financial resources, we may not be able to manage the expansion of our operations or recruit and train additional qualified personnel in an effective manner. Any inability to manage growth could delay the execution of our business plans or disrupt our operations and have a material and adverse effect on our business, financial condition, and results of operations.

Since our inception, we have experienced multiple cycles of growth and anticipate further growth in our business operations. This future growth could put strain on our organizational, administrative and operational infrastructure, including laboratory operations, quality control, customer service and sales organization management. We expect to continue to increase headcount and to hire more specialized personnel in the future as we grow our business. We will need to continue to hire, train and manage additional qualified scientists, laboratory personnel, client and account services personnel, and sales and marketing staff and improve and maintain our technology to properly manage our growth. If our new hires perform poorly, if we are unsuccessful in hiring, training, managing and integrating these new employees or if we are not successful in retaining our existing employees, our business may be harmed.

We may not be able to maintain the quality or expected turnaround times of our diagnostic tests and services, or satisfy customer demand as it 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. The time and resources required to implement these new systems and procedures is uncertain, and failure to complete this in a timely and efficient manner could materially adversely affect our operations. Additionally, if we are required to reduce expenses substantially to sustain our operations, we may not have the human resources to maintain growth in our business operations.

We currently rely on our direct sales force to sell our diagnostic tests in the United States, and any failure to maintain and grow our direct sales force will negatively affect our business, financial condition and results of operations. The members of our direct sales force are highly trained and possess substantial technical expertise, which we believe is critical in increasing adoption of our diagnostic tests. The members of our United States sales force are at-will employees. The loss of these personnel to competitors, or otherwise, will negatively affect our business, financial condition and results of operations. If we are unable to retain our direct sales force personnel or replace them with individuals of equivalent technical expertise and qualifications, or if we are unable to successfully instill such technical expertise in replacement personnel, it may negatively affect our business, financial condition and results of operations.

In order to generate future growth, we plan to continue to expand and leverage our sales and marketing infrastructure. Identifying and recruiting qualified sales and marketing personnel and training them on how to promote our diagnostic tests, on applicable federal and state laws and regulations and on our internal policies and procedures requires significant time, expense and attention. It often takes several months or more before a sales representative is fully trained and productive. Our sales force may subject us to higher fixed costs than those of companies with competing techniques or diagnostic tests that utilize independent third parties, which could place us at a competitive disadvantage. It will negatively affect our business, financial condition and results of operations if our efforts to expand and train our sales force do not generate a corresponding increase in revenue, and our higher fixed costs may slow our ability to reduce costs in the face of a sudden decline in demand for our diagnostic tests. Any failure to hire, develop and retain talented sales personnel, to achieve desired productivity levels in a reasonable period of time, or timely reduce fixed costs, could negatively affect our business, financial condition and results of operations. Our ability to increase our customer base and achieve broader market acceptance of our diagnostic tests will depend to a significant extent on our ability to expand our marketing efforts. We plan to dedicate significant resources to our marketing programs. It will negatively affect our business, financial condition and results of operations if our marketing efforts and expenditures do not generate a corresponding increase in revenue. In addition, we believe that developing and maintaining broad awareness of our diagnostic tests in a cost-effective manner is critical to achieving broad acceptance of our diagnostic tests. Promotion activities may not generate patient or physician awareness or increase revenue, and even if they do, any increase in revenue may not offset the costs and expenses we incur in building our brand. If we fail to successfully promote, maintain and protect our brand, we may fail to attract or retain the physician acceptance necessary to realize a sufficient return on our brand building efforts, or to achieve the level of brand awareness that is critical for broad use of our diagnostic tests, which in turn could have a material adverse effect on our business, financial condition and results of operations.

If we cannot maintain our current relationships, or enter into new relationships, with biopharmaceutical companies, our revenue prospects could be reduced.

We collaborate with biopharmaceutical companies to analyze patient samples for multiple applications primarily to support clinical trials, including patient identification, companion or complementary diagnostics and retrospective testing. The revenue attributable to

our biopharmaceutical customers may also fluctuate in the future, which could have a material adverse effect on our financial condition and results of operations. In addition, the termination of these relationships could result in a temporary or permanent loss of revenue.

Our future success depends in part on our ability to maintain these relationships and to establish new relationships. Many factors have the potential to impact such collaborations, including the type of biomarker support required and our ability to deliver it and our biopharmaceutical customers’ satisfaction with our tests or services and other factors that may be beyond our control. Furthermore, our biopharmaceutical customers may decide to decrease or discontinue their use of our tests due to changes in research and product development plans, failures in their clinical trials, financial constraints, or utilization of internal testing resources or tests performed by other parties, or other circumstances outside of our control. In addition to reducing our revenue, the loss of one or more of these relationships may reduce our exposure to research and clinical trials that facilitate the collection and incorporation of new information into our biobank.

We engage in conversations with biopharmaceutical companies regarding potential commercial opportunities on an ongoing basis. 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 or research studies conducted as part of the engagement will produce successful outcomes. Speculation in the industry about our existing or potential relationships with biopharmaceutical companies can also be a catalyst for adverse speculation about us, our tests and our technology, which can adversely affect our reputation and our business.

Our operating results may fluctuate significantly, which makes our future operating results difficult to predict and could cause our operating results to fall below expectations or any guidance we may provide.

Our quarterly and annual revenue and operating results may fluctuate significantly, which makes it difficult for us to predict our future operating results. Our quarterly and annual operating results may fluctuate as a result of a variety of factors, many of which are outside our control and, as a result, may not fully reflect the underlying performance of our business. These fluctuations may occur due to a variety of factors, including, but not limited to:

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the level of demand for our diagnostic tests, which may vary significantly;

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the timing and cost of manufacturing our diagnostic tests, which may vary depending on the quantity of production and the terms of our agreements with third-party suppliers and manufacturers;

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expenditures that we may incur to acquire, develop, or commercialize additional tests and technologies;

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unanticipated pricing pressures;

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the rate at which we grow our sales force and the speed at which newly hired salespeople become effective, and the cost and level of investment therein;

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BDSX US Equity

BDSX · 10-K · period ended 2025-12-31

Item 1. Business 3

Item 1A. Risk Factors 23

Item 1B. Unresolved Staff Comments 64

Item 1C. Cybersecurity 64

BDSX US Equity☆

BDSX · 10-K · period ended 2025-12-31

Item 1. Business 3

Item 1A. Risk Factors 23

Item 1B. Unresolved Staff Comments 64

Item 1C. Cybersecurity 64

BDSX US Equity