nvax-20221231

Kingdom of Great Britain and Northern Ireland (the “Authority”), which amended and restated in its entirety the SARS-CoV-2 Vaccine Supply Agreement, dated October 22, 2020, between the parties (the “Original UK Supply Agreement”). Under the Original UK Supply Agreement, the Authority agreed to purchase 60 million doses of NVX-CoV2373 and made an upfront payment to us. Under the terms of the Amended and Restated UK Supply Agreement, the Authority agreed to purchase a minimum of 1 million doses and up to an additional 15 million doses (the “Conditional Doses”) of NVX-CoV2373, with the number of Conditional Doses contingent on, and subject to reduction based on, our timely achievement of supportive recommendations from the Joint Committee on Vaccination and Immunisation (the “JCVI”) that is approved by the UK Secretary of State for Health, with respect to use of the vaccine for (a) the general adult population as part of a SARS-CoV-2 vaccine booster campaign in the United Kingdom or (b) the general adolescent population as part of a SARS-CoV-2 vaccine booster campaign in the United Kingdom or as a primary series SARS-CoV-2 vaccination, excluding where that recommendation relates only to one or more population groups comprising less than one million members in the United Kingdom. If the Authority does not purchase the Conditional Doses or the number of such Conditional Doses is reduced below 15 million doses of NVX-CoV2373, we would have to repay up to $225 million related to the upfront payment previously received from the Authority under the Original UK Supply Agreement. Under the Amended and Restated UK Supply Agreement, the Authority also has the option to purchase up to an additional 44 million doses, in one or more tranches, through 2024.

As of November 30, 2022, the JCVI had not yet made a supportive recommendation with respect to NVX-CoV2373, thereby triggering, under the terms of the Amended and Restated UK Supply Agreement, (i) a reduction of the number of Conditional Doses from 15 million doses to 7.5 million doses, which reduced number of Conditional Doses are contingent on, and subject to further reduction based on, our timely achievement by November 30, 2023 of a supportive recommendation from JCVI that is approved by the UK Secretary of State for Health as described in the paragraph above, and (ii) an obligation for us to repay $112.5 million related to the upfront payment previously received from the Authority under the Original UK Supply Agreement, which is reflected in our consolidated balance sheet as Other current liabilities, with the remaining upfront payment balance of $112.5 million reflected in current Deferred revenue.

Under the terms of an APA dated May 5, 2021, by and between the Company and Gavi, the Vaccine Alliance (“Gavi” and “the Gavi APA”), we received an upfront payment of $350.0 million from Gavi in 2021 and an additional payment of $350.0 million in the first quarter of 2022 related to our achieving EUL for NVX-CoV2373 by the WHO (the “Advance Payment Amount”). On November 18, 2022, we delivered written notice to Gavi to terminate the Gavi APA on the basis of Gavi’s failure to procure the purchase of 350 million doses of NVX-CoV2373 from us as required by the Gavi APA. As of November 18, 2022, we had only received orders under the Gavi APA for approximately 2 million doses. On December 2, 2022, Gavi issued a written notice purporting to terminate the Gavi APA based on Gavi’s contention that the Company repudiated the agreement and, therefore, materially breached the Gavi APA. Gavi also contends that, based on its purported termination of the Gavi APA, it is entitled to a refund of the Advance Payment Amount less any amounts that have been credited against the purchase price for binding orders placed by a buyer participating in the COVAX Facility. As of December 31, 2022, the remaining Gavi Advance Payment Amount of $697.4 million, pending resolution of the dispute with Gavi related to a return of the remaining Advance Payment Amount, was reclassified from Deferred revenue to Other current liabilities in our consolidated balance sheet. On January 24, 2023, Gavi filed a demand for arbitration with the International Court of Arbitration based on the claims described above. Our response is currently due by March 2, 2023. Arbitration is inherently uncertain, and while we believe that we are entitled to retain the remaining Advance Payment Amount received from Gavi, it is possible that we could be required to refund all or a portion of the remaining Advance Payment Amount from Gavi.

We are developing our quadrivalent nanoparticle influenza vaccine (“qNIV”) candidate, previously known as NanoFlu, which we advanced through a successful Phase 3 study published in September 2021, demonstrating the utility for a stand-alone influenza vaccine or for use in a combination vaccine. We have subsequently updated our qNIV for further development. We continue to progress in a Phase 2 trial our stand-alone influenza vaccine candidate, qNIV and our CIC vaccine candidate, which combines NVX-CoV2373 and our updated qNIV approach in a single formulation. In October 2022, we announced positive results from the Phase 1/2 CIC clinical trial demonstrating the CIC vaccine’s ability to generate both antibody and polyfunctional CD4+ T-cell (lymphocytes that help coordinate the immune response) responses against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and homologous and heterologous influenza strains. In December 2022, we initiated a Phase 2 CIC dose-refinement trial that also includes further stand-alone updated qNIV evaluation.

We have secured critical funding from the U.S. government to support the development of NVX-CoV2373 for the U.S. population, including $1.8 billion from a partnership formerly known as Operation Warp Speed. In July 2020, we entered into a Project Agreement (the “Project Agreement”) with Advanced Technology International, Inc. (“ATI”), the Consortium Management Firm acting on behalf of the Medical CBRN Defense Consortium in connection with the partnership. The partnership was among components of the U.S. Department of Health and Human Services and the U.S. Department of Defense working to accelerate the development, manufacturing, and distribution of COVID-19 vaccines, therapeutics, and diagnostics. The Project Agreement relates to the Base Agreement we entered into with ATI in June 2020 (the “Base Agreement,” together with the Project Agreement, the “USG Agreement”). The original USG Agreement required us to conduct certain clinical, regulatory, and other activities, including a pivotal Phase 3 clinical trial to determine the safety and efficacy of NVX-CoV2373, and to manufacture and deliver to the U.S. government 100 million doses of the vaccine candidate. Funding under the USG Agreement is payable to us for various development, clinical trial, manufacturing, regulatory, and other activities. The USG Agreement contains terms and conditions that are customary for U.S. government agreements of this nature, including provisions giving the U.S. government the right to terminate the Base Agreement or the Project Agreement based on a reasonable determination that the funded project will not produce beneficial results commensurate with the expenditure of resources and that termination would be in the U.S. government’s interest. If the Project Agreement is terminated prior to completion, we are entitled to be paid for work performed and costs or obligations incurred prior to termination and consistent with the terms of the USG Agreement. In July 2022, we entered into a modification to the USG Agreement that amended the terms of such agreement to provide for (i) an initial delivery to the U.S. government of approximately 3 million doses of NVX-CoV2373 and (ii) any additional manufacture and delivery to the U.S. government up to an aggregate of 100 million doses of NVX-CoV2373 contemplated by the original USG Agreement (inclusive of the initial batch of approximately 3 million doses) dependent on U.S. government demand, FDA guidance on strain selection, agreement between the parties on the price of such doses, and available funding. The 3 million initial doses were delivered in July 2022. In February 2023, we entered into a modification to the USG Agreement that amended the terms of such agreement to provide for additional deliveries to the U.S. government of up to 1.5 million doses of NVX-CoV2373. The performance period under the Project Agreement extends through 2023 to cover clinical trial activities, subject to early termination by the U.S. government or extension by mutual agreement of the parties.

Our funding agreement with the Coalition for Epidemic Preparedness Innovations (“CEPI”), under which CEPI has agreed to provide funding of up to $399.5 million to us to support the development of NVX-CoV2373, provides up to $257.0 million in CEPI Grant Funding and up to $142.5 million in CEPI Forgivable Loan Funding, which are loans in the form of one or more forgivable no-interest term loans in order to prepay certain manufacturing activities and are not subject to restrictive or financial covenants. Payments received under the CEPI Forgivable Loan Funding are only repayable if NVX-CoV2373 manufactured by the contract manufacturing organization (“CMO”) network funded by CEPI is sold to one or more third parties (which would have previously included, but is not limited to, any sales under our Gavi APA prior to its termination), and such sales cover our costs of manufacturing such vaccine, not including manufacturing costs funded by CEPI. The timing and amount of any loan repayments is currently uncertain.

In October 2022 at the World Vaccine Congress in Europe, we reviewed key findings from the Phase 3 stand-alone qNIV candidate, previously referred to as NanoFlu, which met its primary immunogenicity endpoints. The final analysis of these results was previously published in September 2021, in The Lancet Infectious Diseases. The results demonstrated non-inferior immunogenicity to Fluzone® Quadrivalent against all four influenza virus strains included in the vaccine, while also showing both enhanced wild-type hemagglutination-inhibiting antibody responses against homologous strains (22-66% increased) and six heterologous A/H3N2 strains (34-46% increased) as compared to Fluzone® Quadrivalent. Additionally, qNIV showed potent induction of polyfunctional antigen-specific CD4+ T-cells against A(H3N2) and B/Victoria strains, with a 126–189% increase in various post vaccination cell-mediated immunity markers as compared to Fluzone® Quadrivalent.

R21 is being evaluated in an ongoing Phase 3 trial being conducted by our partner, Jenner Institute, University of Oxford, for R21, a malaria candidate which is formulated using our Matrix-M™ adjuvant. In September 2022, positive results from an ongoing Phase 1/2b study were published in The Lancet Infectious Diseases reporting safety, immunogenicity, and efficacy results at 12 months following administration of a booster vaccination in children aged 5 to 17 years in Nanoro, Burkina Faso. A total of 409 children received a booster dose of R21 formulated with our Matrix-M™ adjuvant at 1 year following the primary three-dose regimen maintaining high efficacy against first and multiple episodes of clinical malaria, demonstrating 71% efficacy when formulated with 25 micrograms of Matrix-M™ adjuvant and 80% efficacy when formulated with 50 micrograms of Matrix-M™ adjuvant. The trial is continuing for a further 2 years to assess long-term follow-up of the participants and the value of further booster vaccinations.

We previously granted exclusive and non-exclusive licenses to SIIPL under a supply and license agreement for the development, co-formulation, filling and finishing, registration, and commercialization of NVX-CoV2373. SIIPL agreed to purchase our Matrix-MTM adjuvant and we granted SIIPL a non-exclusive license to manufacture the antigen drug substance component of NVX-CoV2373 in SIIPL’s licensed territory solely for use in the manufacture of NVX-CoV2373. We equally split the revenue from SIIPL's sale of NVX-CoV2373 in its licensed territory, net of agreed costs. We granted to SIIPL (i) an exclusive license in India during the agreement, and (ii) a non-exclusive license (a) during the “Pandemic Period” (as declared by the World Health Organization), in all countries other than specified countries designated by the World Bank as upper-middle or high-income countries, with respect to which we retains rights, and (b) after the Pandemic Period, in only those countries designated as low or middle-income by the World Bank. Following the Pandemic Period, we may notify SIIPL of any bona fide opportunities for us to license NVX-CoV2373 to a third party in such low- and middle-income countries and SIIPL would have an opportunity to match or improve such third-party terms, failing which, we would have the discretion to remove one or more non-exclusive countries from SIIPL’s license. We also have a supply agreement with SIIPL and Serum Life Sciences Limited (“SLS”) under which SIIPL and SLS will supply us with NVX-CoV2373 for commercialization and sale in certain territories, as well as a contract development manufacture agreement with SLS, under which SLS manufactures and supplies finished vaccine product to us using antigen drug substance and Matrix-M™ adjuvant supplied by us. In May and August 2022, we expanded our license and supply arrangements with SIIPL to include our proprietary COVID-19 variant antigen candidate(s), our quadrivalent influenza vaccine candidate, and our CIC vaccine candidate, so that SIIPL can manufacture and commercialize a vaccine targeting COVID-19 variants, including the Omicron subvariants, a quadrivalent influenza vaccine, and CIC vaccine, and supply such vaccines to us. In March 2020, we granted SIIPL a non-exclusive license for the use of Matrix-M™ adjuvant supplied by us to develop, manufacture, and commercialize R21, a malaria candidate developed by the Jenner Institute, University of Oxford.

We have a collaboration and license agreement with Takeda under which we granted Takeda an exclusive license to develop, manufacture, and commercialize NVX-CoV2373 in Japan. Under the agreement, Takeda purchases Matrix-M™ adjuvant from us to manufacture doses of NVX-CoV2373 and we are entitled to receive payments from Takeda based on the achievement of certain development and commercial milestones, as well as a portion of net profits from the sale of NVX-CoV2373. In September 2021, Takeda finalized an agreement with the Government of Japan’s Ministry of Health, Labour and Welfare ("MHLW") for the purchase of 150 million doses of NVX-CoV2373. In February 2023, MHLW cancelled the remainder of doses under its agreement with Takeda. As a result, it is uncertain whether we will receive future payments from Takeda under the terms and conditions of our current collaboration and licensing agreement.

A number of vaccine manufacturers, research institutions, and other organizations are developing a vaccine for SARS-CoV-2, the virus that causes COVID-19. A variety of different vaccine technologies are being studied, including nucleic acid (RNA/DNA), viral vectors, live attenuated or inactivated, and protein-based vaccines. According to a coronavirus vaccine tracker published by The New York Times, updated as of August 31, 2022, there are 33 vaccines approved for limited or full use and 123 vaccines in clinical trials. Novavax is the first protein-based COVID-19 vaccine that received EUA by the FDA and a CMA by EMA in the European Union. As of February 2023, Novavax is one of four manufacturers that have a COVID-19 vaccine that has received EUA by the FDA, with the other manufacturers being Pfizer, Moderna, and Johnson & Johnson. As of February 2023, Pfizer and Moderna have received BLA approval by the FDA in the U.S. for their monovalent COVID-19 vaccines and received EUA by the FDA in the U.S. for their bivalent COVID-19 vaccines. Novavax and Johnson & Johnson have received EUA by the FDA in the U.S. for their monovalent vaccines. Based on NVX-CoV2373’s high efficacy against both the original and variant strains and its well-tolerated profile demonstrated in clinical trials, including two pivotal Phase 3 trials in the U.K. and U.S., we believe our vaccine candidate will continue to play an important role in addressing this global public health crisis.

A number of companies are selling vaccines for seasonal influenza employing both traditional (egg-based) and new vaccine technologies (cell-based). Many seasonal influenza vaccines are currently approved and marketed, and most of these are marketed by major pharmaceutical companies such as Sanofi, GSK, and Seqirus. Competition in the sale of seasonal influenza vaccines is intense. For the older adult segment in the U.S., the CDC preferentially recommends Fluzone-HD® and Flublok® manufactured by Sanofi and Fluad® manufactured by Seqirus. Therefore, newly developed and approved products must be differentiated from existing vaccines in order to have commercial success. In order to show differentiation in the seasonal influenza market, a product may need to be more efficacious and/or be less expensive and quicker to manufacture, all while still showing a comparable or improved tolerability profile. Many of our competitors are working on new products and new generations of current products, some by adding an adjuvant that is used to increase the immunogenicity of that product, each of which is intended to be more efficacious than currently marketed products. Several competitors are working on developing seasonal influenza vaccines using different technologies than those in existing marketed vaccines, the most notable being mRNA from companies including Sanofi, Moderna, and Pfizer. Despite the significant competition and advancing technologies, based on our completed Phase 3 and Phase 1/2 trial results, we believe that our Influenza Program, our adjuvanted nanoparticle seasonal influenza product, could be as efficacious as, or more so than, current products or products being developed by our competitors.

There is currently no approved RSV vaccine for sale in the world; however, a number of vaccine manufacturers, academic institutions, and other organizations currently have, or have had, programs to develop such a vaccine. These groups are developing products to prevent disease caused by RSV using a variety of technology platforms, including viral vectors, nucleic acid (“RNA/DNA”), live attenuated chimeric, antigens or monoclonal antibodies (“Mab”), and competitive recombinant technologies. We continue to believe that our updated RSV F Vaccine candidate, which is a recombinant F-protein nanoparticle, is likely to be as effective as other RSV vaccine candidates or other products in development by our competitors. At this time, there are a number of companies and other organizations with vaccine candidates in late-stage clinical trials. In older adults, GSK, Pfizer, and Moderna have announced data from their Phase 3 studies, with GSK and Pfizer completing regulatory submission to the FDA in the U.S. with Prescription Drug User Fee Act (“PDUFA”) dates in May 2023 and Moderna planning regulatory submission to the FDA in the first half of 2023. Janssen and Bavarian Nordic currently are in

In general, competition among pharmaceutical products is based in part on product efficacy, safety, reliability, availability, price, and patent position. An important factor is the relative timing of the market introduction of our products and our competitors’ products. Accordingly, the speed with which we can develop products, complete the clinical trials and approval processes, and supply commercial quantities of the products to the market is an important competitive factor. Our competitive position also may depend upon our ability to show differentiation with a product that is more efficacious and/or less expensive and quicker to manufacture. Other factors affecting our competitive position include our ability to attract and retain qualified personnel, obtain patent protection or otherwise develop proprietary products or processes, and secure sufficient capital resources for the lengthy period between technological conception and commercial sale.

Patents related to our Virus-Like Particle (“VLP”) program include U.S. Patent No. 7,763,450, which covers, in part, the use of influenza gene sequences for high-yield production of consistent influenza VLP vaccines to protect against current and future seasonal and pandemic strains of influenza viruses. Corresponding European patent, European Patent No. 1644037 also covers this technology. U.S. Patent Nos. 8,080,255, 8,551,756, 8,506,967 and 8,592,197 are directed to methods of producing VLPs and inducing substantial immunity to an influenza virus infection by administering VLPs comprising HA and NA proteins, and our M1 protein derived from the avian influenza strain, A/Indonesia/5/05. Certain claims also encompass similar methods and compositions where the M1 protein is from a different strain of influenza virus than the influenza HA protein and the influenza NA protein. Related patent protection in Europe is provided by European Patent No. 2343084, which covers, in part, vaccine compositions containing VLPs that contain M1, HA, and NA proteins. Our VLP patent portfolio contains many other patents, including U.S. Patent Nos. 8,951,537, 8,992,939, 9,144,607, 9,050,290, 9,180,180, 9,381,239, 9,464,276, 9,474,799, and other patents in multiple ex-U.S. jurisdictions.

We also have been issued patents directed to other core programs, including our RSV and influenza programs. Issued patents directed to various aspects of the RSV program include U.S. Patent Nos. 8,715,692, 9,675,685, 9,731,000, 9,717,786, 10,022,437, 10,426,829, and 11,253,585. Additional patents in the family include EP237009 in Europe, as well as others throughout the world. Patents related to our rabies program include 9,724,405 and 10,086,065 in the U.S., and EP2635257 and EP3246019 in Europe. Related patents have been issued in other world markets. Issued patents in our influenza nanoparticle program include US Patent Nos. 11,364,294 and 11,278,612. In addition to our focus on vaccine programs, we also pursue patent protection for our Matrix Adjuvant program. Issued U.S. Patent Nos. 7,838,019, 9,205,147, 9,901,634, 8,821,881, and 10,729,764 provide examples of patents related to our Matrix Adjuvant program.

The Federal Technology Transfer Act of 1986 and related statutory guidance encourages the dissemination of science and technology innovation. While our expired contract with the U.S. Department of Health and Human Services (“DHHS”), Biomedical Advanced Research and Development Authority provided us with the right to retain ownership in our inventions that may have arisen during performance of that contract, with respect to certain other collaborative research efforts with the U.S. government, certain developments and results that may have commercial potential are to be freely published, not treated as confidential, and we may be required to negotiate a license to developments and results in order to commercialize products. There can be no assurance that we will be able to successfully obtain any such license at a reasonable cost, or that such development and results will not be made available to our competitors on an exclusive or non-exclusive basis.

The development, production, and marketing of biological products, which include the vaccine candidates being developed by Novavax or our collaborators, are subject to regulation for safety, efficacy, and quality by numerous governmental authorities in the U.S. and other countries. We focus on the U.S. regulatory process and the standards imposed by the FDA, the International Council for Harmonisation (“ICH”), and other agencies because we believe meeting U.S. and ICH standards generally allows us to also satisfy regulatory agencies’ standards in other countries where we intend to do business. However, we are mindful that expectations in some venues, notably in the European Union and the United Kingdom (in relation to Great Britain), differ to some degree and we take proactive steps to address such differences by maintaining regular filings and correspondence and attending regular meetings with many other non-U.S. regulatory agencies. In the U.S., the development, manufacturing, and marketing of human pharmaceuticals and vaccines are subject to extensive regulation under the Federal Food, Drug, and Cosmetic Act, and biological products are subject to regulation under provisions of that act and the Public Health Service Act. The FDA not only assesses the safety and efficacy of these products but it also regulates, among other things, the testing, manufacture, labeling, storage, record-keeping, advertising, and promotion of such products. The process of obtaining FDA licensure for a new vaccine is costly and time-consuming.

Vaccine clinical development in most countries follows the same general regulatory pathway as drugs and other biologics. Before applying for FDA licensure to market any new vaccine candidate, we expect to first submit an investigational new drug application (“IND”) that explains to the FDA, among other things, the results of preclinical toxicology testing conducted in laboratory animals, the method of manufacture, quality control tests for release, the stability of the investigational product, and our proposed plans for human testing. At this stage, the FDA decides whether it is reasonably safe to move forward with testing the vaccine candidate in humans. We must then conduct Phase 1 clinical trials and larger-scale Phase 2 and 3 clinical trials that demonstrate the safety, immunogenicity, and efficacy of our vaccine candidate to the satisfaction of the FDA. Following successful completion of all three phases of clinical development, a BLA can be submitted to the FDA requesting licensure of the vaccine for marketing based on the vaccine’s safety and efficacy. Similar pathways exist in Europe and other geographies.

The FDA will only approve a BLA if the vaccine is demonstrated to be safe, pure, and potent. During the FDA’s review of a BLA, the proposed manufacturing facility undergoes a pre-approval inspection during which the FDA examines in detail the production of the vaccine, the manufacturing facility, and the quality documentation related to the vaccine. Vaccine licensure also requires the provision of adequate product labeling to allow health care providers to understand the vaccine’s proper use, including its potential benefits and risks, to communicate with patients and parents, and to safely deliver the vaccine to the public. Until a vaccine is given to the general population, all potential adverse events cannot be anticipated. Thus, the FDA typically requires Phase 4 post-marketing clinical trials for vaccines after licensure to continue gathering safety, and sometimes effectiveness/efficacy data in the indicated and additional populations.

The Commissioner of the FDA may, following the issuance of an appropriate declaration by the Secretary of the DHHS, issue an EUA that would permit the use of an unapproved medical product or unapproved use of an approved medical product to diagnose, treat, or prevent serious or life-threatening diseases or conditions when there are no adequate, approved, and available alternatives. When issuing an EUA, the FDA imposes conditions of authorization, with which the EUA holder must comply. Such conditions include, but may not be limited to, compliance with labeling, distribution of materials designed to ensure proper use, reporting obligations, and restrictions on advertising and promotion. The EUA is only effective for the duration of the declaration issued by the Secretary of the DHHS that EUAs are appropriate. The FDA may also revise or revoke the EUA sooner if the criteria for issuance are no longer met or other circumstances make a revision or revocation appropriate to protect the public health or safety. For example, an EUA may be revoked when the FDA determines that the underlying public health threat no longer exists or warrants such authorization, or for reasons such as significant adverse inspectional findings, reports of adverse events linked to or suspected of being caused by the EUA product, or newly emerging data that may demonstrate the product may not be effective. An EUA is separate from and not dependent on the issuance of a public health emergency (“PHE”) by the Secretary of the DHHS. Therefore, although the Biden Administration has announced that it intends for the COVID-19 PHE, first declared in February 2020, to expire on May 11, 2023, that expiration will not terminate EUAs issued by the FDA.

The FDA has several programs designed to expedite the development and approval of drugs and biological products intended to treat serious or life-threatening diseases or conditions, including fast track designation, breakthrough therapy designation, priority review designation, and accelerated approval. First, the FDA may designate a product for Fast Track review if it is intended, whether alone or in combination with one or more other products, for the treatment of a serious or life-threatening disease or condition and demonstrates the potential to address unmet medical needs for such a disease or condition. For Fast Track products, sponsors may have more frequent interactions with the FDA and the FDA may initiate review of sections of a Fast Track product’s application before the application is complete. The FDA granted Fast Track Designation for NVX-CoV2373 in November 2020 and for NanoFlu, our recombinant quadrivalent seasonal influenza vaccine candidate, in January 2020.

Fourth, a product may be eligible for accelerated approval, if it treats a serious or life-threatening condition and generally provides a meaningful advantage over available therapies. In addition, it must demonstrate an effect on a surrogate endpoint that is reasonably likely to predict clinical benefit or on a clinical endpoint that can be measured earlier than irreversible morbidity or mortality (“IMM”) that is reasonably likely to predict an effect on IMM or other clinical benefit. As a condition of approval, the FDA may require that a sponsor of a drug or biologic receiving accelerated approval perform adequate and well-controlled post-marketing clinical trials to confirm efficacy using a clinically meaningful endpoint, thereby confirming efficacy observed pre-approval using a surrogate endpoint. In June 2019, we announced that the FDA acknowledged that the accelerated approval pathway is available for NanoFlu.

We are also subject to regulation under the Occupational Safety and Health Act, the Environmental Protection Act, the Toxic Substances Control Act, the Resource Conservation and Recovery Act, and other present and potential federal, state, or local regulations, including national and local regulations that govern our facility in Sweden. These and other laws govern our use, handling, and disposal of various biological and chemical substances used in, and waste generated by, our operations. Our research and development involves the controlled use of hazardous materials, chemicals, and viruses. Although we believe that our safety procedures for handling and disposing of such materials comply with the standards prescribed by state and federal regulations, the risk of accidental contamination or injury from these materials cannot be completely eliminated. In the event of such an accident, we could be held liable for any damages that result and any such liability could exceed our resources. Additionally, for formulations containing controlled substances, we are subject to Drug Enforcement Act regulations.

In both domestic and foreign markets, sales of any products for which we receive regulatory approval for commercial sale will depend in part on the availability of reimbursement from third-party payers. Third-party payers include government authorities or programs, private health insurers (including managed care plans), and other organizations. These third-party payers are increasingly challenging the price and examining the cost-effectiveness of medical products and services. In addition, significant uncertainty exists as to the reimbursement status of newly approved healthcare products. We may need to conduct expensive pharmacoeconomic studies in order to demonstrate the cost-effectiveness of our products. There may be significant delays in obtaining coverage and reimbursement for newly approved drugs, and coverage may be more limited than the indications for which the product is approved by the FDA or similar regulatory authorities outside the United States. Our product candidates may not be considered cost-effective at certain prices. Adequate third-party reimbursement may not be available in certain markets to enable us to maintain price levels sufficient to realize an appropriate return on our investment in product development. Third-party payors may also control access to, or manage utilization of, our products with various utilization management techniques. Decreases in third-party reimbursement for our product candidates or a decision by a third-party payer to not cover our product candidates could reduce physician utilization of our products and have a material adverse effect on our sales, results of operations, and financial condition.

Other legislative changes have been proposed and adopted in the United States since the Healthcare Reform Act was enacted. For example, through the process created by the Budget Control Act of 2011, there are automatic reductions of Medicare payments to providers of up to 2% per fiscal year, which went into effect in April 2013 and will remain in effect through 2030 due to subsequent legislative amendments contained in the Coronavirus Aid, Relief, and Economic Security Act, commonly referred to as the “CARES Act.” In November 2020, the Centers for Medicare and Medicaid Services (“CMS”) issued an interim final rule that seeks to lower prescription drug costs by paying no more for certain Medicare Part B drugs than the lowest price paid for such drugs in certain other countries (the “Most Favored Nation Rule”). Under the rule, the lower payment rates for affected drugs would be phased in over a period of four years, beginning in 2021. The rule has been challenged by industry associations on a number of grounds. On December 28, 2020, the U.S. District Court for the Northern District of California issued a nationwide preliminary injunction in Biotechnology Innovation Organization v. Azar, No. 3:20-cv-08603, which preliminarily enjoins CMS from implementing the Most Favored Nation Rule. Given this preliminary injunction, the Most Favored Nation Rule was not implemented on January 1, 2021 and will not be implemented without further rule-making. However, this interim final rule or any similar type of reference pricing regulation could potentially harm our business if expanded to include our products.

Within the U.S., we may be subject to various federal and state laws pertaining to health care “fraud and abuse,” including anti-kickback laws and false claims laws, for activities related to future sales of any of our product candidates that may in the future receive regulatory and marketing approval. Anti-kickback laws generally prohibit a pharmaceutical manufacturer from soliciting, offering, receiving, or paying any remuneration to generate business, including the purchase, prescription, or use of a particular drug. Although the specific provisions of these laws vary, their scope is generally broad and there may not be regulations, guidance, or court decisions that apply the laws to particular industry practices. There is therefore a possibility that our practices might be challenged under such anti-kickback laws. False claims laws, including the federal False Claims Act (“FCA”), prohibit anyone from knowingly and willingly presenting, or causing to be presented, any claims for payment for reimbursed drugs or services to third party payers (including Medicare and Medicaid) that are false or fraudulent. Our activities relating to the sale and marketing of our products may be subject to scrutiny under these laws. Violations of fraud and abuse laws may be punishable by criminal or civil sanctions, including fines and civil monetary penalties, and exclusion from federal health care programs (including Medicare and Medicaid). In the U.S., federal and state authorities are paying increased attention to enforcement of these laws within the pharmaceutical industry and private individuals have been active in alleging violations of the laws and bringing suits on behalf of the government under the FCA. If we were subject to allegations concerning, or were convicted of violating, these laws, our business could be harmed.

managers under contract with them, under the Medicare Part D program and Medicare Advantage Plans, unless the price reduction is one required by law. Effective January 1, 2022, in advance of the calendar year 2022 Part D plan year, safe harbor protection will be eliminated for manufacturer rebates paid directly (or indirectly through a pharmacy benefit manager) to Part D prescription drug plans and Medicare Advantage prescription drug plans. Effective December 30, 2020, the Rebate Rule established two new safe harbors. The first new safe harbor protects price reductions paid by manufacturers to prescription drug plans (including prescription drug plans offered by Medicare Advantage organizations) and Medicaid managed care organizations, which are fully reflected at the point-of-sale. The second new safe harbor protects fair-market-value service fees paid to pharmacy benefit managers by manufacturers. This new rule could result in a change in incentives for health plans and pharmacy benefit managers in negotiating rebates and discounts with manufactures for preferred formulary placement. At this time we cannot predict how these changes may impact our business and operations if our products are commercialized in the U.S.

We are also subject to the U.S. Foreign Corrupt Practices Act (“FCPA”), which prohibits any U.S. individual or business from paying, offering, authorizing payment of, or offering anything of value, directly or indirectly, to any foreign official, political party, or candidate for the purpose of influencing any act or decision of the foreign entity in order to assist the individual or business in obtaining or retaining business. The FCPA also obligates companies whose securities are listed in the U.S. to comply with certain accounting provisions requiring the company to maintain books and records that accurately and fairly reflect all transactions of the corporation, including international subsidiaries, and to devise and maintain an adequate system of internal accounting controls for international operations. Compliance with the FCPA is expensive and difficult, particularly in countries in which corruption is a recognized problem. In addition, the FCPA presents particular challenges in the pharmaceutical industry, because, in many countries, hospitals are operated by the government, and doctors and other hospital employees are considered foreign officials. Certain payments to hospitals in connection with clinical trials and other work have been deemed to be improper payments to government officials and have led to FCPA enforcement actions. Various laws, regulations, and executive orders also restrict the use and dissemination outside the U.S. or the sharing with certain non-U.S. nationals of information classified for national security purposes, as well as certain products and technical data relating to those products. As we expand our presence outside the U.S., it will require us to dedicate additional resources to comply with these laws, and these laws may preclude us from developing, manufacturing, or selling certain products and product candidates outside the United States, which could limit our growth potential and increase our development costs. We cannot guarantee that we, our employees, our consultants, or our third-party contractors are or will be in compliance with all federal, state, and foreign regulations regarding bribery and corruption. Moreover, our strategic collaborators and third-party contractors located outside the U.S. may have inadequate compliance programs or may fail to respect the laws and guidance of the territories in which they operate. The failure to comply with laws governing international business practices may result in substantial civil and criminal penalties and suspension or debarment from government contracting. The Securities and Exchange Commission (“SEC”) also may suspend or bar issuers from trading securities on U.S. exchanges for violations of the FCPA’s accounting provisions. Even if we are not determined to have violated these laws, government investigations into these issues typically require the expenditure of significant resources and generate negative publicity, which could also have an adverse effect on our business, financial condition, and results of operations.

The Federal Health Insurance Portability and Accountability Act of 1996 (“HIPAA”), created additional federal criminal statutes that prohibit, among other actions, knowingly and willfully executing, or attempting to execute, a scheme to defraud any healthcare benefit program, including private third-party payors; knowingly and willfully embezzling or stealing from a healthcare benefit program; willfully obstructing a criminal investigation of a healthcare offense; and knowingly and willfully falsifying, concealing, or covering up a material fact or making any materially false, fictitious, or fraudulent statement in connection with the delivery of or payment for healthcare benefits, items, or services. HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act (“HITECH”), and their implementing regulations, impose requirements regarding the privacy and security of individually identifiable health information, including mandatory contractual terms, for covered entities, or certain healthcare providers, health plans, and healthcare clearinghouses, and their business associates that provide services to the covered entity that involve individually identifiable health information and their subcontractors that use, disclose, or otherwise process individually identifiable health information. HITECH also increased the civil and criminal penalties that may be imposed against covered entities and business associates and gave state attorneys general new authority to file civil actions for damages or injunctions in federal courts to enforce HIPAA. While pharmaceutical

There has been a recent trend of increased federal and state regulation of payments made to physicians and other healthcare providers. The Physician Payments Sunshine Act imposes annual reporting requirements on certain manufacturers of drugs, devices, biologics, and medical supplies for which payment is available under Medicare, Medicaid, or the Children’s Health Insurance Program, with specific exceptions, for payments made by them to physicians (defined to include doctors, dentists, optometrists, podiatrists, and chiropractors) and teaching hospitals, as well as ownership and investment interests held by physicians and their immediate family members. Beginning in 2022, applicable manufacturers will also be required to report information related to payments and other transfers of value provided in the previous year to physician assistants, nurse practitioners, clinical nurse specialists, certified registered nurse anesthetists, and certified nurse midwives.

Given the significant global impact of the COVID-19 pandemic, it is possible that one or more government entities may take actions, including the U.S. government under the Defense Production Act of 1950, as amended, which could directly or indirectly have the effect of diminishing some of our rights or opportunities with respect to NVX-CoV2373 and the economic value of a COVID-19 vaccine to us could be limited. In addition, during a global health crisis, such as the COVID-19 pandemic, where the spread of a disease needs to be controlled, closed or heavily regulated national borders will create challenges and potential delays in our development and production activities and may necessitate that we pursue strategies to develop and produce our vaccine candidates within self-contained national or international borders, at potentially much greater expense and with longer timeframes for public distribution.

We face an inherent risk of product liability as a result of the clinical testing of our product candidates and commercialization of our products. For example, we may be sued if any product we develop allegedly causes injury or is found to be otherwise unsuitable during product testing, manufacturing, marketing, or sale. Any such product liability claims may include allegations of defects in manufacturing, defects in design, a failure to warn of dangers inherent in the product, negligence, strict liability, and a breach of warranties. Claims could also be asserted under state consumer protection acts. If we cannot successfully defend ourselves against product liability claims, we may incur substantial liabilities or be required to limit commercialization of our product candidates. In the United States, the Public Readiness and Emergency Preparedness Act (the “PREP Act”), when applicable, provides immunity for manufacturers from all claims under state or federal law for “loss” arising out of the administration or use of a “covered countermeasure.” However, injured persons may still bring a suit for “willful misconduct” against the manufacturer under some circumstances. “Covered countermeasures” include security countermeasures and “qualified pandemic or epidemic products,” including products intended to diagnose or treat pandemic or epidemic disease, such as pandemic vaccines, as well as treatments intended to address conditions caused by such products. For these immunities to apply, the Secretary of DHHS must invoke the PREP Act by issuing a declaration that a public health emergency or “credible risk” of a future public health emergency exists. On March 17, 2020, the Secretary of DHHS issued a declaration under the PREP Act and has issued subsequent amendments thereto since then to provide liability immunity for activities related to certain countermeasures against the ongoing COVID-19 pandemic. The current declaration will end on October 1, 2024, unless it is renewed. While we believe our products would be covered under the current PREP Act declaration, this cannot be assured.

To support the growth and advancement of our employees, we offer tuition and continuing education reimbursement, and an array of training and professional development opportunities, including on-the-spot coaching with executive coaches and access to the LinkedIn Learning library of over 16,000 on-demand video tutorials that address skills, knowledge, and behaviors related to business, leadership, technology, and innovation. In the last 12 months, videos were viewed and completed over 50,000 times by our employees. In addition, approximately 200 employees have participated in spot coaching. We provide an Executive Development Program for employees identified as having high potential and for employees who have been identified as potential successors to leadership positions. Our Executive Development Program includes executive coaching engagements and leadership development programs designed to strengthen our leadership bench and accelerate and prepare our top talent for future growth. The 2023 Executive Development Program includes a diverse and global group of 34 employees. Professional development learning series are available to all employees and focus on self-awareness, collaboration, hybrid working, leadership, and business acumen.

We started implementing our roadmap in 2022 and are making progress. We hired a DEI and Employee Engagement Manager who will facilitate and help focus our actions to build an inclusive workforce. We began acknowledging global DEI-related observances and we are investing in training to build an inclusive culture and develop our leaders to access different perspectives when generating ideas and decision making. The second annual Novavax Women’s Leadership Forum was held and resulted in building networks, developing skills, sharing voices and ideas, and becoming agents of positive change for nearly 300 Novavax women. In 2022, we also made progress in increasing representation for women and minorities at the Executive level. We commenced and completed the reviews of three people processes, namely, Talent Acquisition, Promotion, and Performance Management. We also have intentionally incorporated DEI principles into our Novavax Leadership Model. We believe our multi-year DEI strategy and roadmap will enable us to continuously improve and excel.

To date, we have financed our operations primarily through the sale of equity and debt securities, government funding and grant agreements, and supply agreements (also sometimes referred to as advance purchase agreements) for NVX-CoV2373. Although we have entered into supply agreements for NVX-CoV2373 that include prepayments from the purchasers, until we can generate sufficient product revenue from such agreements to fully fund our operations, which we may never do, we expect to finance our cash needs through a combination of additional public or private equity or debt financings, as well as existing cash, potential collaborations, strategic alliances and marketing, distribution or licensing arrangements, funding from governmental and non-governmental funding entities, and potentially other sources. While we may continue to apply for contracts or grants from academic institutions, non-profit organizations and governmental entities, we may not be successful. Adequate additional funding may not be available to us on favorable terms, or at all. Furthermore, negative interpretations of clinical trial data or setbacks, or perceived setbacks, with respect to manufacturing ability and/or capacity or regulatory filing timelines for NVX-CoV2373 or our other vaccine candidates, as well as the competitive landscape posed by other COVID-19 vaccines, may impair our ability to raise additional financing on favorable terms, or at all. Additionally, under certain supply agreements, if we do not timely achieve requisite regulatory milestones for NVX-CoV2373 in the relevant jurisdictions, obtain supportive recommendations from governmental advisory committees, and/or achieve product volume or delivery timing obligations, purchasers may seek to terminate such agreements, reduce their purchase commitments, require us to refund all or some prepayments we have received, or renegotiate such agreements. If we cannot raise the additional funds required for our anticipated operations, we may be required to delay significantly, reduce the scope of or eliminate one or more of our research or development programs, downsize our organization, or seek alternative measures to avoid insolvency, including arrangements with collaborative partners or others that may require us to relinquish rights to certain of our technologies or vaccine candidates. If we raise additional funds through future offerings of shares of our common stock or other securities, such offerings would cause dilution of current stockholders’ percentage ownership in the Company, which could be substantial. Future offerings also could have a material and adverse effect on the price of our common stock.

critical to our ability to operate. Traditionally, biotechnology companies have funded their research and development expenditures by raising capital in the equity markets. Declines and uncertainties in these markets in the past have severely restricted raising new capital and have affected companies’ ability to continue to expand or fund existing development, manufacturing, regulatory and commercialization efforts. We require significant capital for our current and expected operations. The general economic and capital market conditions, both in the U.S. and worldwide, have been volatile in the past and at times have adversely affected our access to capital and increased the cost of capital. The capital and credit markets may not be available to support future capital raising activity on favorable terms. If economic conditions decline, our future cost of equity or debt capital and access to the capital markets could be adversely affected. In addition, if we are unable to access the capital markets on favorable terms, our ability to execute our business plan as contemplated would be compromised. Moreover, we rely and intend to rely on third parties, including clinical research organizations, contract manufacturing organizations and other important vendors and consultants. Global economic conditions may result in a disruption or delay in the performance of our third-party contractors and suppliers. If such third parties are unable to adequately satisfy their contractual commitments to us in a timely manner, our business could be adversely affected.

Our funding agreements with the U.S. government (“USG”) and CEPI each reimburse a portion of the expenses associated with the development and commercialization of NVX-CoV2373. To the extent funding commitments in such agreements are conditioned on our meeting certain milestones or conditions, we may not ultimately receive the full amount of committed funds and may require additional funding to support our NVX-CoV2373 development and commercialization activities, and we may be unable to timely obtain additional funding. For example, in July 2021, in connection with funding from the USG partnership formerly known as Operation Warp Speed, the USG instructed us to prioritize alignment with the FDA on our analytic methods before conducting additional U.S. manufacturing, and the USG indicated that it would not fund additional U.S. manufacturing until such alignment was reached, which did not occur until June 2022. In February 2023, in connection with the execution of Modification 17 to the USG Agreement, the U.S. government indicated to us that the award may not be extended past its current period of performance. If the USG Agreement is not amended, as we had previously expected, then we may not receive all of the remaining $416 million in funding we had previously anticipated pursuant to the USG Agreement. The USG Agreement also includes provisions giving the USG termination rights based on a determination that the funded project will not produce beneficial results commensurate with the expenditure of resources and that termination would be in the USG’s interest. Such a determination would result in the loss of funding under that agreement and could result in other actions by the USG. The CEPI funding agreement, meanwhile, provides CEPI certain “march-in” rights in the event of certain breaches of that agreement. Additionally, we have entered into, and plan to continue entering into, supply agreements (also sometimes referred to as advance purchase agreements) for NVX-CoV2373 that include prepayments from the purchasers to help fund our development and manufacture of the vaccine. Under certain supply agreements, if we do not timely achieve requisite regulatory milestones for NVX-CoV2373 in the relevant jurisdictions, obtain supportive recommendations from governmental advisory committees, and/or achieve product volume or delivery timing obligations, purchasers may seek to terminate such agreements, reduce their purchase commitments, require us to refund all or some prepayments we have received, or renegotiate such agreements, each of which could have a material and adverse effect on our financial condition. In July 2022, following a delay in obtaining regulatory approval in the United Kingdom, for example, we entered into the Amended and Restated UK Supply Agreement, which amended and restated in its entirety the Original UK Supply Agreement, which reduced the volume of vaccine doses that the Authority is committed to purchase as compared to the Original UK Supply Agreement. As of November 30, 2022, the United Kingdom’s Joint Committee on Vaccination and Immunisation had not yet made a supportive recommendation with respect to NVX-CoV2373, triggering, under the terms of the Amended and Restated UK Supply Agreement, a further reduction of the volume of vaccine doses that the Authority is committed to purchase, as well as an obligation of the Company to repay $112.5 million of an upfront payment previously received from the Authority. Additionally, following our notice to Gavi of termination of the Gavi APA, Gavi responded by providing us with its own purported termination of the Gavi APA, claiming that we are obligated to refund $697.4 million in advance payments previously received from Gavi. On January 31, 2023, Novavax received a Request for Arbitration from Gavi in respect of the dispute. Arbitration is inherently uncertain, and, while we believe that we are entitled to retain the advance payments received from Gavi, it is possible that we could be required to refund all or a portion of the advance payments from Gavi. As a result, our existing funding and supply agreements do not assure success of our vaccine candidates and may be insufficient to fully fund the development and commercialization of our vaccine candidates.

Additionally, even though NVX-CoV2373 has received regulatory authorizations in certain jurisdictions and may receive further regulatory approval in others, successful commercialization depends on our ability to effectively scale up and maintain manufacturing capabilities at our own locations and those of our manufacturing partners and contractors. In May 2020, we acquired Novavax CZ (formerly Praha Vaccines, a.s.) including its vaccine manufacturing facility in Bohumil, Czech Republic and approximately 150 of its employees but we have yet to produce commercial batches or receive regulatory approval at this site. We also are actively entering into agreements with third parties to manufacture the antigen component of NVX-CoV2373 and our proprietary Matrix-M™ adjuvant, as well as to distribute NVX-CoV2373. Because of contractual restraints and the limited number of third-party manufacturers with the relevant expertise, required regulatory approvals and facilities to manufacture NVX-CoV2373 and its components at commercial scale, replacement of a

We have limited experience with the commercial launch of vaccine products, and doing so in a pandemic environment with an urgent, critical global need creates additional challenges. In addition to scaling up our manufacturing capabilities, we need to develop global distribution channels and form partnerships with third parties worldwide, as well as hire, train and integrate additional management, administrative and sales and marketing personnel. Rapid and significant growth may strain our administrative and operational infrastructure, imposing significant additional responsibilities on our organization, and our efforts to establish and maintain these capabilities may not meet expectations as to timing, scale-up, reproducibility, yields, purity, cost, potency or quality. If we fail to successfully manage our growth and the increased complexity of our operations, our business, financial position, results of operations and prospects may be materially and adversely affected.

NVX-CoV2373 may not be as effective in protecting against these or other future variant strains. Additionally, we expect the demand for bivalent vaccines to continue to increase, which may negatively impact the demand, particularly in the U.S., for NVX-CoV2373 and would likely require significant expenditures by the Company to successfully market a bivalent formulation, particularly in the U.S. NVX-CoV2373 may fail to achieve market acceptance or significant sales, despite gaining regulatory approval, provisional registration, conditional marketing authorization or emergency use authorization in a number of jurisdictions, including emergency use authorization the U.S., as demand for variant-specific or bivalent vaccines increases. We have several variant-specific vaccine candidates in development, including for Omicron subvariants, and bivalent formulations with NVX-CoV2373, and may develop others in the future. However, if these efforts are unsuccessful, these candidates do not receive regulatory approvals expeditiously, we are slower to develop variant-specific or bivalent vaccines than competitors, these vaccine candidates prove less effective than competitors’ vaccines, or we are unable to successfully manufacture, distribute or market such vaccine candidates once approved, these shortcomings may lead to reputational harm, loss of market share, and adverse financial results.

Our 2023 revenue depends on our ability to successfully develop, manufacture, distribute, or market an updated monovalent or bivalent formulation of a vaccine candidate for COVID-19 for the fall 2023 COVID vaccine season, which is inherently uncertain and subject to a number of risks, including regulatory approval. We experienced delays in early 2023 in manufacturing our BA.5 clinical trial materials, which has the potential to delay regulatory approval from the FDA for our vaccine candidate for the fall 2023 COVID vaccine season. In addition, in January 2023, the U.S. Vaccines and Related Biologics Products Advisory Committee (“VRBPAC”) announced its intent to provide the industry with its strain protocol guidance in the second quarter of 2023 for the fall 2023 COVID vaccine season. To meet potential demand for fall 2023, we intend to begin manufacturing an updated COVID-19 variant strain-containing formulation prior to the availability of strain protocol guidance. If we begin manufacturing a formulation that is not consistent with the strain protocol guidance, we will not be able to deliver the appropriate vaccine to our customers in sufficient quantities for the fall 2023 COVID vaccine season and we will have incurred significant costs for a formulation that we will be unable to sell.

We focus our research and development activities on vaccines, an area in which we believe we have particular strengths and a technology that appears promising. The outcome of any research and development program is highly uncertain. Only a small fraction of biopharmaceutical development programs ultimately result in commercial products or even product candidates and a number of events could delay our development efforts and negatively impact our ability to make regulatory submissions or obtain regulatory approval for, and to manufacture, market and sell, NVX-CoV2373 or any other vaccine on our projected timelines, if at all. Vaccine candidates that initially appear promising often fail to yield successful products, and we may not ultimately be able to demonstrate the safety, potency, purity, stability and efficacy necessary to obtain or maintain regulatory authorization to market our product candidates. In many cases, preclinical studies or clinical trials will show that a product candidate is not efficacious or that it raises safety concerns or has other side effects that outweigh its intended benefit. Success in preclinical or early clinical trials may not translate into success in large-scale clinical trials. Further, success in clinical trials often leads to increased investment, accelerating cumulative losses. Even if clinical trial results appear positive, regulatory approval may not be obtained if the FDA, or a foreign equivalent, does not agree with our interpretation of the results, and we may face challenges when scaling-up the production process to commercial levels. Even after a product is approved and launched, general usage or post-marketing clinical trials may identify safety or other previously unknown problems with the product, or manufacturing issues may emerge, either of which may result in regulatory approvals being suspended, limited to narrow the scope of the approval, or revoked, which may otherwise prevent successful commercialization. Intense competition in the vaccine industry could also limit the successful commercialization of any products for which we receive commercial approval.

We will require approval from the FDA of any name we intend to use for our products regardless of whether we have secured a trademark registration from the USPTO. The FDA typically conducts a review of proposed product names, including an evaluation of potential for confusion with other product names. The FDA may object to any product name we submit if it believes the name inappropriately implies medical claims. If the FDA objects to any of our proposed product names, we may be required to adopt an alternative name for our proposed products. If we adopt an alternative name, we would lose the benefit of any existing trademark applications for such developmental candidate and may be required to expend significant additional resources in an effort to identify a suitable product name that would qualify under applicable trademark laws, not infringe the existing rights of third parties and be acceptable to the FDA. We may be unable to build a successful brand identity for a new trademark in a timely manner or at all, which would limit our ability to commercialize our products, if approved.

We are highly dependent on third-party organizations to conduct some of our laboratory testing and clinical trials and a significant amount of our vaccine manufacturing activities and distribution. If we are unable to obtain any necessary services on acceptable terms, we may not complete our product development or commercialization efforts in a timely manner. We may lose control over these activities or become too dependent upon these parties. These third parties may not complete testing, manufacturing or distribution activities on schedule, or in satisfaction of regulatory or commercial requirements. In particular, we currently depend exclusively on SIIPL and SLS for co-formulation, filling, and finishing NVX-CoV2373. If SLS is unable to provide sufficient co-formulation, fill, and finish services to us, fails to meet regulatory requirements, or otherwise defaults on its obligations to us, we may not be able to obtain alternative co-formulation, fill, and finish services from other providers on acceptable terms in a timely manner or at all, which could prevent or delay delivery of customer orders, or otherwise negatively affect our business. Certain of our facilities are also contracted for defined time frames and through association with USG and CEPI, and we may not be able to access those facilities for sufficient periods of time to provide adequate supply.

participants are adequately protected. The FDA and foreign regulatory agencies also require us to comply with good manufacturing practices. Our reliance on third parties does not relieve us of these responsibilities and requirements. These third parties may not successfully carry out their contractual duties or regulatory obligations. Furthermore, if a third-party manufacturer is producing materials or products for themselves or other companies, that manufacturer is exposed to regulatory risks for the production of such materials and products. As a result, failure to meet the regulatory requirements for the production of those materials and products may generally affect the regulatory status of the third-party manufacturer’s facility, which could impact its ability to produce our materials and products. Any of our third-party service providers may need to be replaced, the quality or accuracy of the data they obtain may be compromised, the services provided to us may be delayed, or the product they manufacture may be contaminated and unusable due to the failure to adhere to our clinical and manufacturing protocols, regulatory requirements or for other reasons. In any such event, our preclinical development activities or clinical trials may be extended, delayed, suspended or terminated, and we may not be able to obtain regulatory approval of, or successfully commercially manufacture on a timely basis, our vaccine candidates.

The administration of drugs or vaccines to humans, whether in clinical trials or after marketing approval, can result in product liability claims. We maintain product liability insurance coverage for our current clinical programs, including our NVX-CoV2373 trials, and for commercialization of NVX-CoV2373. However, we may not be able to obtain additional insurance coverage or maintain insurance coverage on commercially reasonable terms, at a reasonable cost or in sufficient amounts to protect us against losses due to liability. Furthermore, such insurance coverage and our resources may not be sufficient to satisfy all liabilities that result from product liability claims. A successful claim may prevent us from obtaining adequate product liability insurance in the future on commercially desirable terms, if at all. Even if a claim is not successful, defending such a claim would be time- consuming and expensive, may damage our reputation in the marketplace and would likely divert management’s attention.

In the U.S., the PREP Act, when applicable, provides immunity for manufacturers from all claims under state or federal law for “loss” arising out of the administration or use of a “covered countermeasure.” However, injured persons may still bring a suit for “willful misconduct” against the manufacturer under some circumstances. “Covered countermeasures” include security countermeasures and “qualified pandemic or epidemic products”, including products intended to diagnose or treat pandemic or epidemic disease, such as pandemic vaccines, as well as treatments intended to address conditions caused by such products. For these immunities to apply, the Secretary of DHHS must invoke the PREP Act by issuing a declaration that a public health emergency or “credible risk” of a future public health emergency exists. Such a PREP Act declaration is separate from other declarations such as a PHE or EUA declaration and, among other things, defines the scope and duration of the PREP Act immunities. On March 17, 2020, the Secretary of DHHS issued a declaration under the PREP Act and has issued subsequent amendments thereto to provide liability immunity for activities related to certain countermeasures against the ongoing COVID-19 pandemic. The current declaration will end on October 1, 2024, unless it is renewed. While we believe our products are covered under the current PREP Act declaration, this cannot be assured. Also, the Secretary of the HHS may not make other declarations in the future that cover any of our other product candidates, and the U.S. Congress may reduce coverage under the PREP Act or repeal it altogether. Product liability lawsuits may result in substantial liabilities and may require us to limit commercialization of our product candidates.

We are continuing to pursue the manufacture, distribution and clinical testing of NVX-CoV2373, which is currently our only commercial product and source of product revenues. Completion of our clinical trials and commercialization of NVX-CoV2373 and our other vaccine candidates requires access to, or development of, facilities to effectively manufacture NVX-CoV2373 and our other vaccine candidates at sufficient yields and at commercial-scale. We have limited experience manufacturing any of our vaccine candidates in the volumes necessary to support commercial sales. While we have increased our global manufacturing capacity for NVX-CoV2373, our efforts to establish and maintain manufacturing capabilities may not meet expectations as to timing, scale-up, reproducibility, yields, purity, cost, potency or quality. For example, we experienced delays in early 2023 in manufacturing our BA.5 clinical trial materials, which has the potential to delay regulatory approval from the FDA for our vaccine candidate for the fall 2023 COVID vaccine season. We are highly dependent on third-party organizations to conduct a significant amount of our vaccine manufacturing activities. We do not have sufficient internal manufacturing infrastructure to support global commercialization of NVX-CoV2373 and we have entered into third-party agreements for the components, as well as for commercial fill-finish manufacturing, for NVX-CoV2373. The antigen component of NVX-CoV2373 is currently being manufactured at Novavax CZ, as well as partnered manufacturing sites, including SIIPL in India and SK bioscience in Korea, and the Matrix-MTM adjuvant component of NVX-CoV2373 is currently being manufactured at Novavax AB, as well as other partnered manufacturing sites, including AGC Biologics in Europe. Challenges in manufacturing either the antigen component or the adjuvant, or issues in later manufacturing stages, could compromise production of NVX-CoV2373. Additionally, we currently depend exclusively on SIIPL and SLS for co-formulation, filling, and finishing NVX-CoV2373 and the loss of this supplier could prevent or delay the delivery of customer orders.

manufacturers based on such predictions. Our ability to accurately forecast demand for NVX-CoV2373 could be negatively affected by many factors, including challenges in managing our commercial strategy, unanticipated changes in general market conditions or regulatory matters, and market demand for variant-specific COVID-19 vaccines, among others. If we underestimate our third-party manufacturing requirements, we may not be able to timely meet obligations under our customer supply agreements. Conversely, if we overestimate our third-party manufacturing requirements, we may end up with inventory levels in excess of customer demand that result in a portion of our inventory becoming obsolete or expiring, as well as inventory write-downs or write-offs, or we may need to cancel previously forecasted batches of product from our third-party manufacturers, which may result in material cancellation fees. In September 2022, for example, we entered into a Confidential Settlement Agreement and Release with FUJIFILM under which we are responsible for up to $185 million to FUJIFILM in connection with the termination of manufacturing activity. Additionally, in December 2022, we agreed to approximately $95 million in fees owed to AGC Biologics in connection with the cancellation of batches in 2022. If we are unable to accurately forecast demand for NVX-CoV2373 and the required services from third-party manufacturers, our results of operations could be materially harmed.

Manufacturing NVX-CoV2373 and our other vaccine candidates involves a complicated process with which we have limited experience. If we and our third-party manufacturers are unable to manufacture NVX-CoV2373 and our other vaccine candidates in clinical quantities or, if and when necessary, in commercial quantities and at sufficient yields and at required specifications, then clinical trials and commercialization will be delayed, and we will need to identify and reach supply arrangements with additional third parties. Third-party manufacturers also must receive FDA or equivalent foreign regulatory body approval before they can produce clinical material or commercial product which could cause delays and alter our production schedule. Our vaccines are in competition with other products for access to these third-party facilities and may be subject to delays in manufacture if third parties prioritize other products. We may not be able to enter into any necessary additional third-party manufacturing arrangements on acceptable terms, or on a timely basis. In addition, we have to enter into technical transfer agreements and share our know-how with the third-party manufacturers, which can be time-consuming and may result in delays.

The near and long-term viability of our vaccine candidates depend in part on our ability to successfully establish new strategic collaborations with pharmaceutical and biotechnology companies, non-profit organizations and government agencies. Establishing strategic collaborations and obtaining government funding is difficult and time-consuming. Potential collaborators may reject collaborations based upon their assessment of our financial, regulatory or intellectual property position or based on their internal pipelines; government agencies may reject contract or grant applications based on their assessment of public need, the public interest, our products’ ability to address these areas, or other reasons beyond our expectations or control. Collaborators also may seek to modify or terminate relationships. Past success in establishing strategic collaborations with pharmaceutical and biotechnology companies, non-profit organizations and government agencies in the past is no guarantee of future success in entering into new relationships or in performing under existing relationships. If we fail to establish a sufficient number of collaborations or government relationships on acceptable terms, or fail to perform under collaborations or relationships to the satisfaction of counter-parties, we may not be able to commercialize our vaccine candidates or generate sufficient revenue to fund further research and development efforts.

In both the U.S. and some foreign jurisdictions, there have been a number of legislative and regulatory proposals and initiatives to change the health care system in ways that could affect our ability to sell vaccines and could adversely affect the prices that we receive for our vaccine candidates, if approved. Some of these proposed and implemented reforms could result in reduced pharmaceutical pricing or reimbursement rates for medical products, and while we have no current vaccines available for commercial sale other than subject to provisional registration, conditional marketing authorization or emergency use authorization in certain foreign jurisdictions, the impact of such reform could nevertheless adversely affect our business strategy, operations and financial results. For example, the Affordable Care Act (“ACA”) contained several cost containment measures that could adversely affect our future revenue, including, for example, increased drug rebates under Medicaid for brand name prescription drugs, extension of Medicaid rebates to Medicaid managed care organizations, and extension of so-called 340B discounted pricing on pharmaceuticals sold to certain healthcare providers. Additional provisions of the healthcare reform laws that may negatively affect our future revenue and prospects for profitability include the assessment of an annual fee based on our proportionate share of sales of brand name prescription drugs to certain government programs, including Medicare and Medicaid. The ACA also established a Medicare Part D coverage gap discount program, in which manufacturers must agree to offer 70% point-of-sale discounts off negotiated prices of applicable branded on drugs (including vaccines) to eligible beneficiaries during their coverage gap period (the so-called “donut hole”), as condition for the manufacturer’s outpatient drugs to be covered under Medicare Part D. Other aspects of healthcare reform, such as expanded government enforcement authority and heightened standards that could increase compliance-related costs, could also affect our business.

Through the American Rescue Plan Act of 2021, the Biden Administration increased subsidies for coverage purchased through ACA health insurance exchanges and extended eligibility for subsidies to higher income levels. On December 14, 2018, a U.S. District Court Judge in the Northern District of Texas ruled that the individual mandate is a critical and inseverable feature of the ACA, and therefore, because it was repealed as part of the TCJA, the remaining provisions of the ACA are invalid as well. On December 18, 2019, the U.S. Court of Appeals for the 5th Circuit ruled that the individual mandate was unconstitutional but remanded the case back to the District Court to determine whether the remaining provisions of the ACA are invalid as well. On March 2, 2020, the U.S. Supreme Court granted the petitions for writs of certiorari to review the case, and oral arguments were heard on November 10, 2020. On June 17, 2021, the U.S. Supreme Court dismissed the most recent judicial challenge to the ACA brought by several states without specifically ruling on the constitutionality of the ACA. Separately, President Biden issued an Executive Order to initiate a special enrollment period from February 15, 2021 through August 15, 2021 for purposes of obtaining health insurance coverage through the ACA marketplace. The Executive Order also instructed certain governmental agencies to review and reconsider their existing policies and rules that limit access to healthcare, including among others, reexamining Medicaid demonstration projects and waiver programs that include work requirements, and policies that create unnecessary barriers to obtaining access to health insurance coverage through Medicaid or the ACA. On April 5, 2022, the Biden administration issued an Executive Order directing agencies “with responsibilities related to Americans’ access to health coverage” to “review agency actions to identify ways to continue to expand the availability of affordable health coverage.” It is also unclear how these and other healthcare reform measures of the Biden administration or other efforts, if any, to challenge, repeal or replace the ACA, will impact our business.

Other legislative changes have been proposed and adopted since the ACA was enacted. These changes include aggregate reductions to Medicare payments to providers of 2% per fiscal year pursuant to the Budget Control Act of 2011 and subsequent laws, which began in 2013 and, due to subsequent legislative amendments, will stay in effect through 2030 unless additional Congressional action is taken. In January 2013, the American Taxpayer Relief Act of 2012 was signed into law, which, among other things, further reduced Medicare payments to several types of providers, including hospitals, imaging centers and cancer treatment centers, and increased the statute of limitations period for the government to recover overpayments to providers from three to five years. New laws may result in additional reductions in Medicare and other healthcare funding, which may materially adversely affect customer demand and affordability for our products and, accordingly, the results of our financial operations. Additionally, the pharmaceutical industry has also been the subject of significant publicity in recent years regarding the pricing of pharmaceutical products, including publicity and pressure resulting from prices charged by pharmaceutical companies for new products as well as price increases by pharmaceutical companies on older products that some people have deemed excessive. As a result, pharmaceutical product prices have been the focus of increased scrutiny by the USG, including certain state attorneys general, members of congress, presidential candidates and the United States Department of Justice. If reforms in the health care industry make reimbursement for our potential products less likely, the market for our potential products will be reduced, and we could lose potential sources of revenue. The existence or threat of cost control measures could cause our corporate collaborators to be less willing or able to pursue research and development programs related to our vaccine candidates. Further, it is also possible that additional governmental action is taken in response to the COVID-19 pandemic. We cannot predict the ultimate content, timing or effect of any healthcare reform legislation or the impact of potential legislation on us.

Even if we receive regulatory approvals for our vaccine candidates, including NVX-CoV2373, coverage and reimbursement may be subject to unique and changing regulatory policies. For example, under the ACA preventive care mandate, non-grandfathered group health plans and health insurance coverage offered in the individual or group market typically have at least one year before they must provide first-dollar coverage for a newly issued preventive care requirement or guideline. However, pursuant to the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”), non-grandfathered group health plans and health insurance coverage offered in the individual or group market must cover any qualifying coronavirus preventive service 15 business days after the United States Preventive Services Task Force, or Advisory Committee on Immunization Practices (“ACIP”) designates such service as preventive. Further, third-party reimbursement for providers administering COVID-19 vaccines may affect market acceptance of NVX-CoV2373, if we receive regulatory approval. Currently, the CARES Act and its implementing regulations state that (i) providers that participate in the U.S. Centers for Disease Control and Prevention’s COVID-19 Vaccination Program must administer a COVID-19 immunization regardless of an individual’s ability to pay or health insurance coverage status, (ii) providers may not seek any reimbursement, including through balance billing, from an immunization recipient, (iii) coverage is required, without cost-sharing, for the administration of the immunization even if a third party, such as the federal government, pays for the cost of the immunization, and (iv) for the duration of the COVID-19 public health emergency (the “PHE”), private health insurance plans must cover COVID-19 immunizations and their administration even when provided by out-of-network

Since the beginning of the COVID-19 pandemic, the U.S. federal government has been the predominant purchaser of COVID-19 vaccines, making it possible for population-wide access to vaccinations. This population-wide access may change as the pandemic moves past the crisis phase, the PHE expires, and the market transitions to a third‐party reimbursement model. This transition to a more traditional third‐party reimbursement model is not tied to the ending of the PHE and in part reflects the fact that the U.S. federal government has not received additional funds from Congress to continue to purchase more vaccines. As federal funding declines for COVID-19 vaccines, the USG will most likely transition to standard commercial purchasing through different health care system channels, including commercial insurers and pharmacy benefit managers, and consequently shift the cost of COVID-19 vaccines to insurers and patients (in the form of premiums and out-of-network costs). With respect to the government health care programs and commercial insurance, there may no longer be blanket coverage of COVID-19 vaccines without, in certain instances, accompanying conditions of reimbursement, such as the institution of prior authorization protocols. Medicare (including traditional Medicare and Medicare Advantage) will continue to pay for vaccinations in full; starting January 1, 2023, all Medicare Part D plans are required to cover all adult vaccines recommended by the ACIP, with no cost-sharing, even if the beneficiary is in the deductible phase of the benefit. Provisions in the ARPA and IRA require Medicaid (specifically, with respect to enrollees who receive coverage under traditional Medicaid and all Medicaid medically needy enrollees in specified states) and CHIP programs to cover all ACIP‐recommended vaccines, including COVID‐19 vaccines/boosters with no cost sharing even when the emergency declarations expire and there is no longer any supply of federally purchased vaccines. Under the ACA, people enrolled in non‐grandfathered plans (i.e., the vast majority of people with private insurance) will continue to pay nothing for

Regardless of the disease, smaller or early-stage companies and research institutions also may prove to be significant competitors, particularly through collaborative arrangements with large and established pharmaceutical companies. As these companies develop their technologies, they may develop proprietary positions, which may prevent or limit our product development and commercialization efforts. We will also face competition from these parties in recruiting and retaining qualified scientific and management personnel, establishing clinical trial sites and participant registration for clinical trials and in acquiring and in-licensing technologies and products complementary to our programs or potentially advantageous to our business. If any of our competitors succeed in obtaining approval from the FDA or other regulatory authorities for their products sooner than we do or for products that are more effective or less costly than ours, our commercial opportunity could be significantly reduced.

Our COVID-19 vaccine has moved rapidly through the regulatory review and authorization processes in the U.S. and other jurisdictions. The speed at which COVID-19 vaccines and therapeutics are being created and tested is atypical, and evolving or changing plans or priorities within the FDA or other regulatory authorities, including changes based on new knowledge of COVID-19 and how the disease, and new variants of the virus, affect the human body, may significantly affect our ability to establish a competitive market share for our COVID-19 vaccine. A large number of vaccine manufacturers, academic institutions and other organizations have developed COVID-19 vaccines or are developing COVID-19 vaccine candidates. In particular, Moderna, and Pfizer/BioNTech have received full regulatory approvals for their COVID-19 vaccines and, along with Johnson & Johnson have received emergency use authorizations for their COVID-19 vaccines in the U.S. and other countries. Many other companies, including AstraZeneca, Sinovac Biotech, and Sinopharm are in various stages of developing and obtaining marketing authorization for COVID-19 vaccine candidates. All of these companies have obtained the relevant Emergency Use Licenses (“EULs”) from the World Health Organization for their respective vaccines to be supplied to the countries or international coalition partners, including the relevant United Nations agencies, which rely upon the World Health Organization’s EULs to support the local immunization programs. Despite funding provided to us to date, many of our competitors pursuing vaccine candidates have significantly greater product candidate development, manufacturing and marketing resources than we do. Larger pharmaceutical and biotechnology companies have extensive experience in clinical testing and obtaining regulatory approval for their products and may have the resources to heavily invest to accelerate discovery and development of their vaccine candidates. The success of our COVID-19 vaccine will depend, in part, on its relative safety, efficacy (including against emerging variant strains), side effect profile, convenience, and cost. COVID-19 vaccines approved prior to our vaccine satisfy a portion of the demand for initial vaccinations, and we no longer have access to that opportunity. In addition, COVID-19 vaccines approved prior to our vaccine may develop broad market acceptance that we are challenged to overcome. For example, in the U.S., the FDA granted a Biologics License Application (“BLA”) in August 2021 to the Pfizer/BioNTech vaccine as a two-dose primary series for the prevention of COVID-19 in individuals 12 years of age and older, and in January 2022 to the Moderna vaccine as a two-dose primary series for the prevention of COVID-19 in individuals 18 years of age and older. The FDA amended the Pfizer-BioNTech emergency use authorization on September 22, 2021, and the Moderna emergency use authorization and Johnson & Johnson emergency use authorization on October 20, 2021, to authorize the use of a single booster dose for certain populations after completion of primary vaccination with any FDA-authorized or approved COVID-19 vaccine. The FDA then amended both of the Pfizer-BioNTech emergency use authorization and the Moderna emergency use authorization again on November 19, 2021, to authorize the use of such a single booster dose for all patients 18 years and older. The FDA has since amended the Pfizer-BioNTech emergency use authorization to authorize the use of the single booster dose for individuals 5 years and older and the Moderna emergency use authorization to authorize the use of the single booster dose for individuals 6 years and older and for individuals 6 months to 5 years who have received the primary Moderna vaccine series. The FDA has also approved Gilead’s Veklury (remdesivir) for treatment of COVID-19 in both adult and pediatric populations, as well as Eli Lilly’s Olumiant (baricitinib) and Genentech’s Actemra (tocilizumab) for treatment of COVID-19 in certain hospitalized adults. Furthermore, if any competitors are successful in producing a more efficacious vaccine or other treatment for COVID-19 (including against emerging variant strains), or if any competitors are able to manufacture and distribute any such vaccines or treatments with greater efficiency there may be a diversion of potential governmental and other funding away from us and toward such other parties.

We are also aware that there are multiple companies with active RSV vaccine programs at various stages of development. Thus, while there is no RSV vaccine currently on the market, there is likely to be significant and consistent competition as these active programs mature. Different RSV vaccines may work better for different segments of the population, so it may be difficult for a single RSV vaccine manufacturer to provide vaccines that are marketable to multiple population segments. Geographic markets are also likely to vary significantly, which may make it difficult to market a single RSV vaccine worldwide. Even if a manufacturer brings an RSV vaccine to license, it is likely that competitors will continue to work on new products that could be more efficacious and/or less expensive. Even if our RSV vaccine candidate is developed in the future and receives regulatory approval, it may not achieve significant sales if other, more effective vaccines under development by our competitors are also approved.

The development, manufacture and marketing of our pharmaceutical and biological products are subject to government regulation by the FDA and regulatory authorities in other jurisdictions, including the EMA, the Czech Republic’s State Institute for Drug Control (SUKL) with respect to our manufacturing facility in the Czech Republic and the Swedish Medical Products Agency (Läkemedelsverket, LV) with respect to our adjuvant product being developed in Sweden, as well as other country authorities into which active pharmaceutical ingredients and excipients are imported and/or manufactured by us or our sub-contracted manufacturers. In the U.S. and most foreign countries, we must complete rigorous preclinical testing and extensive clinical trials that demonstrate the safety and efficacy of a product in order to apply for regulatory approval to market the product. Additionally, we must demonstrate that our manufacturing facilities, processes and controls are adequate with respect to such product to assure safety, purity and potency and comply with applicable good manufacturing practice requirements. None of our vaccine candidates has yet gained full regulatory approval in the U.S., although NVX-CoV2373 has received provisional registration, conditional marketing authorization or emergency use authorization in the U.S., Canada, Australia, New Zealand, the E.U., the United Kingdom, India, Indonesia, the Philippines, and Singapore, and South Korea as well as EUL from the World Health Organization. We also have vaccine candidates in clinical trials and preclinical laboratory or animal studies.

These processes are expensive and can take many years to complete, and we may not be able to demonstrate the safety, purity, potency and efficacy of our vaccine candidates to the satisfaction of regulatory authorities. The start of clinical trials can be delayed or take longer than anticipated for many and varied reasons, many of which are out of our control. Safety concerns may emerge that could lengthen the ongoing clinical trials or require additional clinical trials to be conducted. Promising results in early clinical trials may not be replicated in subsequent clinical trials. Regulatory authorities may also require additional testing, and we may be required to demonstrate that our proposed products represent an improved form of treatment over existing therapies, which we may be unable to do without conducting further clinical trials. Moreover, if a regulatory authority grants regulatory approval of a product, the approval may be limited to specific indications or limited with respect to its distribution. Expanded or additional indications for approved products may not be approved, which could limit our revenue. Foreign regulatory authorities may apply similar limitations or may refuse to grant any approval. Consequently, even if we believe that preclinical and clinical data are sufficient to support regulatory approval for our vaccine candidates, the FDA and foreign regulatory authorities ultimately may not grant approval for commercial sale in their applicable jurisdiction, or may impose regulatory requirements that make further pursuit of approval uneconomical in one or more jurisdictions. If our vaccine candidates are not approved, our ability to generate revenue will be limited, and our business will be adversely affected.

We intend to have our vaccine candidates marketed outside the U.S. In furtherance of this objective, we have entered into supply agreements with various foreign governments and international distribution agreements with commercial entities. In order to market our products in the European Union, United Kingdom, India, Asia and many other non-U.S. jurisdictions, we must obtain separate regulatory approvals and comply with numerous and varying regulatory requirements. The approval procedure varies among countries and can involve additional testing and data review. The time required to obtain foreign regulatory approval may differ from that required to obtain FDA approval. The foreign regulatory approval process may include all of the risks associated with obtaining FDA approval. Additionally, regulatory authorities outside the U.S. might not accept data from trials conducted in other countries. Although NVX-CoV2373 has received provisional registration, conditional marketing authorization or emergency use authorization in a number of jurisdictions, we may not obtain regulatory approvals in other relevant jurisdictions on a timely basis, if at all. Approval by one regulatory agency does not ensure approval by regulatory agencies in other jurisdictions. However, a failure or delay in obtaining regulatory approval in one jurisdiction may have a negative effect on the regulatory approval process in other jurisdictions, including approval by the FDA. The failure to obtain regulatory approval in foreign jurisdictions could harm our business.

The regulatory pathway for NVX-CoV2373 is evolving and failure by us to comply with any laws, rules and standards, some of which may not exist yet or are subject to interpretation and may be subject to change, could result in a variety of adverse consequences, including penalties, fines and delays in vaccine licensure. Efforts to comply with evolving laws, regulations and standards have resulted in, and are likely to continue to result in, increased general and administrative expenses and a diversion of management time and attention to regulatory compliance activities. For example, the rules, regulations and standards governing the USG Agreement are uncertain and may evolve as the program progresses. Such rules or standards may adversely affect our plans to develop NVX-CoV2373 and failure by us to comply with any laws, rules or standards, some of which may not exist yet or may change, could result in a range of adverse consequences, such as penalties, fines or failure to receive funding.

In addition, because the path to licensure of any vaccine against COVID-19 is unclear, we may have a widely used vaccine in circulation in certain countries as an investigational vaccine or a product authorized for temporary or emergency use prior to our receipt of full marketing approval. Unexpected safety issues in these circumstances could lead to significant reputational damage for Novavax and our technology platform going forward and other issues, including delays in our other programs, the need for re-design of our clinical trials and the need for significant additional financial resources. For example, although we currently operate under an emergency use authorization provided by the FDA for NVX-CoV2373, the FDA may revoke such authorization if it determines that the underlying health emergency no longer exists or warrants such authorization, and we cannot predict how long such authorization will remain in place. Such revocation could adversely impact our business in a variety of ways.

We have and are currently conducting several clinical trials of NVX-CoV2373 at sites outside the U.S., including a Phase 3 trial partially in Mexico, a Phase 3 trial in the U.K., a Phase 2b trial in South Africa, a Phase 1/2 trial partially in Australia, a Phase 2/3 trial in India, and a Phase 1/2 trial in Japan. Although the FDA may accept data from clinical trials conducted outside the U.S., acceptance of these data is subject to conditions imposed by the FDA. For example, the clinical trial must be well designed and conducted and be performed by qualified investigators in accordance with ethical principles. The trial population must also adequately represent the U.S. population, and the data must be applicable to the U.S. population and U.S. medical practice in ways that the FDA deems clinically meaningful. Other regulatory authorities impose equivalent requirements for their countries. In addition, while these clinical trials are subject to the applicable local laws, where the data is to be used to support our BLA, FDA acceptance of the data will depend on its determination that the trials also complied with all applicable U.S. laws and regulations. If the FDA does not accept the data from any trial that we conduct outside the U.S., it could result in delay pending completion of our trials conducted in the U.S. or result in the need for additional trials, which would be costly and time-consuming and could delay or permanently halt our development and commercialization of NVX-CoV2373.

We also may be restricted or prohibited from marketing or manufacturing a product, even after obtaining product approval, if previously unknown problems with the product or its manufacture are subsequently discovered. We cannot provide assurance that newly discovered or developed safety issues will not arise following regulatory approval. With the use of any vaccine by a wide patient population, serious adverse events may occur from time to time that did not arise in the clinical trials of the product or that initially appeared to be unrelated to the vaccine itself and only with the collection of subsequent information were found to be causally related to the product. Any such safety issues could cause us to suspend or cease marketing of our approved products, possibly subject us to substantial liabilities, and adversely affect our ability to generate revenue and our financial condition.

Given the significant global impact of the COVID-19 pandemic, it is possible that one or more government entities may take actions, including under the USG under the Defense Production Act of 1950, as amended, that directly or indirectly have the effect of diminishing some of our rights or opportunities with respect to NVX-CoV2373, and the economic value of a COVID-19 vaccine to us could be limited. In addition, during a global health crisis, such as the COVID-19 pandemic, where the spread of a disease needs to be controlled, closed or heavily regulated national borders create challenges and delays in our development, production and distribution activities and may necessitate that we pursue strategies to develop, produce and distribute our vaccine candidates within self-contained national or international borders or with additional safety measures or checks in place, at potentially much greater expense and with longer timeframes for public distribution.

Disruptions at the FDA and other agencies may also slow the time necessary for new drugs to be reviewed and approved by necessary government agencies, which would adversely affect our business. For example, over the last several years, the USG has shut down several times and certain regulatory agencies, such as the FDA and the SEC, have had to furlough employees and stop or slow the pace of critical activities. Equally, the move of the EMA to the Netherlands from London caused a significant loss of experienced staff and the UK’s MHRA’s loss of funding from the E.U. has caused a loss of funding and consequently of staff. If a prolonged government shutdown or slowdown of the relevant regulatory authority occurs, it could significantly impact the ability of that Authority to timely review and process our regulatory submissions, which could have a material adverse effect on our business. Further, in our operations as a public company, future government shutdowns could impact our ability to access the public markets and obtain necessary capital in order to properly capitalize and continue our operations.

If a drug is intended for the treatment of a serious or life-threatening condition and the drug demonstrates the potential to address an unmet medical need for this condition, the drug sponsor may apply for FDA Fast Track Designation or similar fast track processes with other regulatory agencies. In the EU and the UK, rolling review procedure was relied upon for conditional marketing authorizations to be granted. However, Fast Track Designation or conditional authorizations do not ensure that the drug sponsor will receive marketing approval or that approval will be granted within any particular timeframe. The FDA granted Fast Track Designation for NVX-CoV2373 in November 2020 and for NanoFlu, our recombinant quadrivalent seasonal influenza vaccine candidate, in January 2020. We may also seek Fast Track Designation for more of our other vaccine candidates. If we do seek Fast Track Designation for our other vaccine candidates, we may not receive it, and even if we receive Fast Track Designation, we may not experience a faster development process, review or approval compared to conventional FDA procedures. In addition, the FDA may withdraw Fast Track designation if it believes that the designation is no longer supported by data from our clinical development program. Fast Track Designation alone does not guarantee qualification for the FDA’s priority review procedures.

Our facilities in Maryland are subject to various local, state and federal laws and regulations relating to safe working conditions, laboratory practices, the experimental use of animals and the use and disposal of hazardous or potentially hazardous substances, including chemicals, microorganisms and various hazardous compounds used in connection with our research and development activities. In the U.S., these laws include the Occupational Safety and Health Act, the Toxic Test Substances Control Act and the Resource Conservation and Recovery Act. Similar national and local regulations govern our facilities in Sweden and the Czech Republic. We cannot eliminate the risk of accidental contamination or discharge or injury from these materials. Federal, state and local laws and regulations govern the use, manufacture, storage, handling and disposal of these materials. We could be subject to civil damages in the event of an improper or unauthorized release of, or exposure of individuals to, these hazardous materials. In addition, claimants may sue us for injury or contamination that results from our use or the use by third parties of these materials, and our liability may exceed our total assets. Compliance with environmental laws and regulations may be expensive, and current or future environmental regulations may impair our research, development or production efforts.

Within the U.S. (and within foreign countries), if we obtain full approval for any of our product candidates and begin commercializing them, our operations may be directly, or indirectly through our arrangements with third-party payors and customers, subject to additional healthcare regulation and enforcement by the federal and state governments (or the regulatory bodies or governments of foreign countries), which may constrain the business or financial arrangements and relationships through which we sell, market and distribute our products. These laws and regulations may restrict or prohibit a wide range of pricing, discounting, marketing and promotion, structuring and commission(s), certain customer incentive programs and other business arrangements generally. Activities subject to these laws also involve the improper use of information obtained in the course of patient recruitment for clinical trials. The applicable U.S. federal and state healthcare laws and regulations (which may be comparable to foreign laws existing in foreign countries) that may affect our ability to operate include:

•the federal Physician Payment Sunshine Act and its implementing regulations, which require manufacturers of drugs, devices, biologicals, and medical supplies for which payment is available under Medicare, Medicaid or the Children’s Health Insurance Program (with certain exceptions) to report annually to the DHHS information related to payments or other transfers of value made to physicians (defined to include doctors, dentists, optometrists and chiropractors) and teaching hospitals, as well as ownership and investment interests held by physicians and their immediate family members; effective January 1, 2022, these reporting obligations extend to include transfers of value made to certain non-physician providers such as physician assistants and nurse practitioners; similar reporting requirements have also been enacted on the state level in the U.S., and an increasing number of countries worldwide either have adopted or are considering similar laws requiring disclosure of interactions with health care professionals;

Because of the breadth of these laws and the narrowness of the statutory exceptions and safe harbors available, it is possible that some of our business activities could be subject to challenge under one or more of such laws. If our operations are found to be in violation of any of such laws or any other governmental regulations that apply to us, we may be subject to, on a corporate or individual basis, penalties, including civil and criminal penalties, damages, fines, the curtailment or restructuring of our operations, the exclusion from participation in federal and state healthcare programs and even imprisonment, any of which could materially adversely affect our ability to operate our business and our financial results. In addition, the cost of implementing sufficient systems, controls, and processes to ensure compliance with all of the aforementioned laws could be significant. Any action for violation of these laws, even if successfully defended, could cause us to incur significant legal expenses and divert management’s attention from the operation of the company’s business. If any of the physicians or other healthcare providers or entities with whom we expect to do business is found not to be in compliance with applicable laws, that person or entity may be subject to criminal, civil or administrative sanctions, including

It is not always possible to identify and deter employee misconduct, and the precautions we take to detect and prevent inappropriate conduct may not be effective in controlling unknown or unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits stemming from a failure to be in compliance with such laws or regulations. Efforts to ensure that our business arrangements will comply with applicable healthcare laws may involve substantial costs. It is possible that governmental and enforcement authorities will conclude that our business practices may not comply with current or future statutes, regulations or case law interpreting applicable fraud and abuse or other healthcare laws and regulations. If any such actions are instituted against us and we are not successful in defending ourselves or asserting our rights those actions, our business may be impaired.

The FCPA and similar worldwide anti-bribery and anti-corruption laws prohibit companies and their intermediaries from corruptly providing any payments or other benefits to foreign government officials for the purpose of obtaining or retaining business. The U.S. Departments of Justice, Securities & Exchange Commission, Commerce, State and Treasury and other federal agencies and authorities have a broad range of civil and criminal penalties they may seek to impose against corporations and individuals for violations of the FCPA, economic sanctions laws, export control laws, and other federal statutes and regulations, including those established by the Office of Foreign Assets Control, or OFAC. In addition, the U.K. Bribery Act of 2010, or the Bribery Act, prohibits both domestic and international bribery, as well as bribery across both private and public sectors. An organization that fails to prevent bribery by anyone associated with the organization can be charged under the Bribery Act unless the organization can establish the defense of having implemented adequate procedures to prevent bribery.

Novavax has received a number of regulatory approvals in ex-U.S. jurisdictions and has commenced commercial operations in these international locations, including partnering with third-parties in certain higher-risk jurisdictions. Further, a portion of our business with respect to our manufacturing is conducted outside of the U.S. in higher-risk jurisdictions. We expect our international activities to increase in the future. Though we maintain policies, internal controls and other measures reasonably designed to promote compliance with applicable anti-corruption and trade laws and regulations, our employees or agents may nevertheless engage in improper conduct for which we might be held responsible. Any violations of these anti-corruption or trade laws, or even allegations of such violations, can lead to an investigation and/or enforcement action, which could disrupt our operations, involve significant management distraction, and lead to significant costs and expenses, including legal fees. If we, or our employees or agents acting on our behalf, are found to have engaged in practices that violate these laws and regulations, we could be subject to criminal and civil enforcement action, suffer severe fines and penalties, profit disgorgement, injunctions on future conduct, securities litigation, bans on transacting government business, delisting from securities exchanges and other consequences that may have a material adverse effect on our business, financial condition and results of operations. In addition, our reputation, our revenue or our stock price could be adversely affected if we become the subject of any negative publicity related to actual or potential violations of anti-corruption or trade laws and regulations.

Our success in large part depends on our ability to maintain the proprietary nature of our technology and other trade secrets. To do so, we must prosecute and maintain existing patents, obtain new patents and pursue trade secret and other intellectual property protection. We also must operate without infringing the proprietary rights of third-parties or allowing third-parties to infringe our rights. We currently have or have rights to over 560 U.S. and foreign patents and patent applications covering our technologies. However, patent issues relating to pharmaceuticals and biologics involve complex legal, scientific and factual questions. To date, no consistent policy has emerged regarding the breadth of biotechnology patent claims that are granted by the U.S. Patent and Trademark Office (“USPTO”) or enforced by the federal courts. Therefore, we do not know whether any particular patent applications will result in the issuance of patents, or that any patents issued to us will provide us with any competitive advantage. We also cannot be sure that we will develop additional proprietary products that are patentable. Furthermore, there is a risk that others will independently develop or duplicate similar technology or products or circumvent the patents issued to us.

Trademark registration to protect the trademarks for our proposed products will require approval from the USPTO in the U.S. and in trademark offices throughout the world in our key markets. The USPTO or a trademark office in a key international jurisdiction may refuse registration of any of our trademarks on a variety of potential grounds. If registration is not granted to one of our trademarks in the U.S. or in another key international jurisdiction, we may be required to adopt an alternative name for that proposed product. If we adopt an alternative name, we would lose the benefit of any existing trademark applications for such developmental candidate and may be required to expend significant additional resources in an effort to identify a suitable product name that would qualify under applicable trademark laws, not infringe the existing rights of third parties and be acceptable to the FDA and other regulatory authorities.

As a result of patent or trademark infringement claims, or in order to avoid potential claims, we may choose or be required to seek a license from the third party. These licenses may not be available on acceptable terms, or at all. Even if we are able to obtain a license, the license would likely obligate us to pay license fees or royalties or both, and the rights granted to us might be non- exclusive, which could result in our competitors gaining access to the same intellectual property. Ultimately, we could be prevented from commercializing a product, or be forced to cease some aspect of our business operations, if, as a result of actual or threatened patent or trademark infringement claims, we are unable to enter into licenses on acceptable terms. All of the issues described above could also impact our collaborators, which would also impact the success of the collaboration and therefore us.

Competitors may infringe our patents or the patents of our collaborators or licensors. As a result, we may be required to file patent infringement suits to prevent unauthorized uses. This can be expensive and time-consuming. In addition, in an infringement proceeding, a court may decide that a patent of ours is not valid or is unenforceable, or may refuse to stop the other party from using the technology at issue on the grounds that our patents do not cover its technology. An adverse determination of any litigation or defense proceeding could put one or more of our patents at risk of being invalidated or interpreted narrowly and could put our patent applications at the risk of not issuing. Competitors may infringe our trademarks or the trademarks of collaborators or licensors. As a result, we may be required to file suit to counter infringement for unauthorized use of an identical or confusingly similar trademark. This can be expensive and time-consuming.

Our patents may be subject to various challenges related to ownership and inventorship, including interference or derivation proceedings. Third parties may assert that they are inventors on our patents or that they are owners of the patents. While we perform inventorship analyses to insure that the correct inventors are listed on our patents, we cannot be certain that a court of competent jurisdiction would arrive at the same conclusions we do. If we are unsuccessful in defending against ownership or inventorship challenges, a court may require us to list additional inventors, may invalidate the patent, or may transfer ownership of the patent to a third party. Any of these outcomes may harm our ability to exclude competitors and potentially impact our commercial success. Further, if ownership is transferred to a third party we may be required to seek a license to those rights to preserve our exclusive ability to practice the invention. Such a license may not be available on commercially reasonable terms, or at all. If we are unable to obtain a license, we may be required to expend time, effort, and other resources to design around the patent. Any such license may be non-exclusive and if a competitor is able to obtain a license from the third party, our ability to exclude that competitor from the market may be negatively impacted.

Our trademark registrations may be subject to various challenges related to likelihood of confusion, use of a trademark in commerce, or other grounds in the U.S. and internationally. Third parties may assert that our trademarks infringe on their prior rights or that we are not using a trademark in a particular jurisdiction in connection with the goods/services identified in the trademark registration. While we perform trademark clearance searches and analysis to determine that we are not infringing upon the trademark rights of others, we cannot be certain that a court of competent jurisdiction would arrive at the same conclusions we do. If we are unsuccessful in defending against such challenges, a court may cancel our trademark registration and/or issue an injunction requiring that we cease use of the trademark. We may also not be able to rely on common law rights that we may have in any trademark. Any of these outcomes may potentially impact our commercial success.

Important legal issues remain to be resolved as to the extent and scope of available patent protection for biopharmaceutical products and processes in the U.S. and other important markets outside the U.S., such as Europe and Japan. In addition, foreign markets may not provide the same level of patent protection as provided under the U.S. patent system. Litigation or administrative proceedings may be necessary to determine the validity and scope of certain of our and others’ proprietary rights. Any such litigation or proceeding may result in a significant commitment of resources in the future and could force us to do one or more of the following: cease selling or using any of our products that incorporate the challenged intellectual property, which would adversely affect our revenue; obtain a license from the holder of the intellectual property right alleged to have been infringed, which license may not be available on reasonable terms, if at all; and redesign our products to avoid infringing the intellectual property rights of third parties, which may be time-consuming or impossible to do. In addition, changes in, or different interpretations of, patent laws in the U.S. and other countries may result in patent laws that allow others to use our discoveries or develop and commercialize our products. We cannot provide assurance that the patents we obtain or the unpatented technology we hold will afford us significant commercial protection. In Europe, a new unitary patent system, which takes effect on June 1, 2023, may significantly impact European patents, including those granted before the introduction of the new system. Under the new system, applicants can, upon grant of a patent, opt for that patent to become a Unitary Patent which will be subject to the jurisdiction of a new Unitary Patent Court (“UPC”). Patents

granted before the implementation of the new system can be opted out of UPC jurisdiction, remaining as national patents in the UPC countries. Patents that remain under the jurisdiction of the UPC may be challenged in a single UPC-based revocation proceeding that, if successful, could invalidate the patent in all countries who are signatories to the UPC. Further, because the UPC is a new court system and there is no precedent for the court’s laws, there is increased uncertainty regarding the outcome of any patent litigation. We are unable to predict what impact the new patent regime may have on our ability to exclude competitors in the European market. In addition to changes in patents laws, geopolitical dynamics, including Russia’s incursion into Ukraine, may also impact our ability to obtain and enforce patents in particular jurisdictions. If we are unable to obtain and enforce patents as needed in particular markets, our ability to exclude competitors in those markets may be reduced.

We anticipate growing through both internal development projects, as well as external opportunities, which include the acquisition, partnering and in-licensing of products, technologies and companies or the entry into strategic alliances and collaborations. The availability of high quality opportunities is limited, and we may fail to identify candidates that we and our stockholders consider suitable or complete transactions on terms that prove advantageous. In order to pursue such opportunities, we may require significant additional financing, which may not be available to us on favorable terms, if at all. Even if we are able to successfully identify and complete acquisitions, like our business combinations with Novavax CZ (formerly Praha Vaccines) and Novavax AB, strategic transactions involve many risks, including, among others, those related to diversion of management’s attention from other business concerns, unanticipated expenses and liabilities, and increased complexity of our operations, which could prevent us from effectively exploiting acquired facilities, successfully integrating the acquired business and personnel, or fully realizing expected synergies.

•2023 Revenue: Our 2023 revenue depends on our ability to successfully develop, manufacture, distribute, or market an updated monovalent or bivalent formulation of a vaccine candidate for COVID-19 for the fall 2023 COVID vaccine season, which is inherently uncertain and subject to a number of risks, including regulatory approvals. We experienced delays in early 2023 in manufacturing our BA.5 clinical trial materials, which has the potential to delay regulatory approval from the FDA for our vaccine candidate for the fall 2023 COVID vaccine season. In addition, in January 2023, VRBPAC announced its intent to provide the industry with its strain protocol guidance in the second quarter of 2023 for the fall 2023 COVID vaccine season. To meet potential demand for fall 2023, we intend to begin manufacturing an updated COVID-19 variant strain-containing formulation prior to the availability of strain protocol guidance. If we begin manufacturing a formulation that is not consistent with the strain protocol guidance, we will not be able to deliver the appropriate vaccine to our customers in sufficient quantities for the fall 2023 COVID vaccine season and we will have incurred significant costs for a formulation that we will be unable to sell.

Our ability to fund Company operations is dependent upon revenue related to vaccine sales for our products and product candidates, if such product candidates receive marketing approval and are successfully commercialized; the resolution of certain matters, including whether, when, and how the dispute with Gavi is resolved; and management’s plans, which include resolving the dispute with Gavi and may include raising additional capital through a combination of equity and debt financing, collaborations, strategic alliances, and marketing, distribution, or licensing arrangements. New financings may not be available to us on commercially acceptable terms, or at all. Also, any collaborations, strategic alliances, and marketing, distribution, or licensing arrangements may require us to give up some or all of our rights to a product or technology, which in some cases may be at less than the full potential value of such rights. In addition, the regulatory and commercial success of NVX-CoV2373 and our other vaccine candidates, including an influenza vaccine candidate, CIC vaccine candidate, or a COVID-19 variant strain-containing monovalent or bivalent formulation, remains uncertain. If we are

In the ordinary course of our business, we and many of our current and future strategic partners, vendors, contractors, and consultants collect and store sensitive data, including intellectual property, our proprietary business information and data about our clinical participants, suppliers and business partners and personally identifiable information. The secure maintenance of this information is critical to our operations and business strategy. Some of this information represents an attractive target of criminal attack by malicious third parties with a wide range of motives and expertise, including nation-states, organized criminal groups, “hacktivists,” patient groups, disgruntled current or former employees and others. Our ongoing operating activities also depend on functioning information technology systems. Cyber attacks are of ever-increasing levels of sophistication, and, despite our security measures, our information technology systems and infrastructure and those of our vendors and partners are not immune to such attacks or breaches. In 2020, several domestic and foreign security agencies announced that government actors or government-affiliated actors were specifically targeting organizations engaging in COVID-19 vaccine development and research. Our profile as a recipient of funding under the USG Agreement and our development of NVX-CoV2373 may result in greater risk of cyber attack. Any such attack could result in a material compromise of our networks, and the information stored there could be accessed, publicly disclosed, lost, rendered, permanently or temporarily, inaccessible. Furthermore, we may not promptly discover a system intrusion. Like other companies in our industry, we have and third parties with connections to our systems or with data relevant to our business have experienced attacks to our data and systems, including malware and computer viruses. Additionally, we partner with sites that store our clinical trial data. Attacks could have a material impact on our business, operations or financial results. Any access, disclosure or other loss of information, whether stored by us or our partners, or other cyberattack causing disruption to our business, including ransomware, could result in reputational, business, and competitive harms, significant costs related to remediation and strengthening our cyber defenses, legal claims or proceedings, government investigations, liability including under laws that protect the privacy of personal information, and increased insurance premium, all of which could adversely affect our business. We also may need to pay a ransom if a “ransomware” infection prevents access or use of our systems and we may face reputational and other harms in addition to the cost of the ransom if an attacker steals certain critical data in the course of such an attack.

Evolving state, federal and foreign laws, regulations and industry standards regarding privacy and security apply to our collection, use, retention, protection, disclosure, transfer and other processing of personal data. Privacy and data protection laws may be interpreted and applied differently from country to country and may create inconsistent or conflicting requirements, which increases the costs incurred by us in complying with such laws, which may be substantial. For example, the GDPR, which became effective in May 2018, imposes a broad array of requirements for processing personal data, including elevated disclosure requirements regarding collection and use of such data, requirements that companies allow individuals to obtain copies or demand deletion of personal data held by those companies, limitations on retention of information, and public disclosure of significant data breaches, among other things. The GDPR provides for substantial penalties for non-compliance of up to the greater of €20 million or 4% of global annual revenue for the preceding financial year. From January 1, 2021 the GDPR has been retained in U.K., as it forms part of the law of England and Wales, Scotland and Northern Ireland by virtue of section 3 of the European Union (Withdrawal) Act 2018, as amended by the Data Protection, Privacy and Electronic Communications (Amendments etc.) (EU Exit) Regulations 2019 (SI 2019/419) (“UK GDPR”), alongside the U.K.’s Data Protection Act 2018. Our efforts to comply with GDPR, the UK GDPR and other privacy and data protection laws impose significant costs and challenges that are likely to increase over time, and we are exposed to substantial penalties or litigation related to violations of existing or future data privacy laws and regulations.

questions about whether the European Commission’s Standard Contractual Clauses (“SCCs”), an alternative to the Privacy Shield, can lawfully be used for cross-border data transfers. On June 4, 2021, the European Commission adopted new SCCs under the GDPR for personal data transfers outside of the EEA. Under this legal mechanism, we may have obligations to conduct transfer impact assessments for such cross-border data transfers and implement additional security measures. As we incorporate the new SCCs into our contractual arrangements, we may be required to expend significant resources to update our contractual arrangements and to comply with the new obligations. If we are unable to implement a valid compliance mechanism for cross-border personal information transfers, we may face increased exposure to regulatory actions, substantial fines and injunctions against processing or transferring personal information from Europe to the U.S. An inability to import personal information from Europe to the U.S. may significantly and negatively impact our business operations, including by limiting our ability to conduct clinical trials in Europe; limiting our ability to collaborate with contract research organizations, service providers, contractors and other companies subject to the GDPR; or requiring us to increase our data processing capabilities in Europe at significant expense.

Privacy laws and regulations are also expanding in the U.S. The CCPA, which became effective January 1, 2020, substantially expands privacy obligations of many businesses, requiring new disclosures to California consumers, imposing new rules for collecting or using information about minors and affording consumers new abilities, such as the right to know whether their data is sold or disclosed and to whom, the right to request that a company delete their personal information, the right to opt-out of the sale of personal information and the right to non-discrimination in terms of price or service when a consumer exercises a privacy right. Like the GDPR, the CCPA establishes potentially significant penalties for violation. The CCPA also provides a private right of action along with statutory damages for certain data breaches, which is expected to increase risks related to data breach litigation. The California Privacy Rights Act (“CPRA”), which will become operational in 2023, expands on the CCPA, creating new consumer rights and protections, including the right to correct personal information, the right to opt out of the use of personal information in automated decision making, the right to opt out of “sharing” consumer’s personal information for cross-context behavioral advertising, and the right to restrict use of and disclosure of sensitive personal information, including geolocation data to third parties. Similar restrictions are also included in the Virginia Consumer Data Protection Act (“VCDPA”) and the Colorado Privacy Act (“CPA”), the first comprehensive state privacy statutes to follow the CCPA. We will need to evaluate and potentially update our privacy program to seek to comply with the CPRA, VCDPA, CPA and other US privacy laws, and we expect to incur additional expense in our effort to comply.

In 2022, we issued $175.3 million aggregate principal amount of Notes. Our ability to make scheduled payments of the principal of, to pay interest on, or to refinance our indebtedness, including the Notes, depends on our future performance, which is subject to economic, financial, competitive and other factors beyond our control. We do not expect our business to be able to generate cash flow from operations sufficient to service our debt and make necessary capital expenditures and may therefore be required to adopt one or more alternatives, such as selling assets, restructuring debt or obtaining additional equity capital on terms that may be onerous or highly dilutive. Our ability to refinance our indebtedness, which matures in 2027, unless earlier converted, redeemed, or repurchased, will depend on the capital markets and our financial condition at such time. We may not be able to engage in any of these activities or engage in these activities on desirable terms, which could result in a default on our debt obligations, and limit our flexibility in planning for and reacting to changes in our business.

Holders of the Notes will have the right to require us to repurchase their Notes for cash upon the occurrence of a fundamental change at a fundamental change repurchase price equal to 100% of the principal amount of the Notes to be repurchased, plus accrued and unpaid interest, if any. A fundamental change may also constitute an event of default or prepayment under, and result in the acceleration of the maturity of, our then-existing indebtedness. We cannot assure that we will have sufficient financial resources, or will be able to arrange financing, to pay the fundamental change repurchase price in cash with respect to any Notes surrendered by holders for repurchase upon a fundamental change. In addition, restrictions in our then existing credit facilities or other indebtedness, if any, may not allow us to repurchase the Notes upon a fundamental change. Our failure to repurchase the Notes upon a fundamental change when required would result in an event of default pursuant to the indenture governing the Notes which could, in turn, constitute a default under the terms of our other indebtedness, if any. If the repayment of the related indebtedness were to be accelerated after any applicable notice or grace periods, we may not have sufficient funds to repay the indebtedness and repurchase the Notes.

If we are unable to partner with a third-party to advance the development of one or more of our vaccine candidates, we will need to raise money through additional debt or equity financings. To the extent that we raise additional capital by issuing equity securities, our stockholders will experience immediate dilution, which may be significant. There is also a risk that such equity issuances may cause an ownership change under the Internal Revenue Code of 1986, as amended, and similar state provisions, thus limiting our ability to use our net operating loss carryforwards and credits. To the extent that we raise additional capital through licensing arrangements or arrangements with collaborative partners, we may be required to relinquish, on terms that may not be favorable to us, rights to some of our technologies or vaccine candidates that we would otherwise seek to develop or commercialize ourselves. In addition, economic conditions may also negatively affect the desire or ability of potential collaborators to enter into transactions with us. They may also have to delay or cancel research and development projects or reduce their overall budgets.

Our operations, and those of our clinical research organizations, contract manufacturing organizations, vendors of materials needed in manufacturing, collaboration partners, distributors and other third parties upon whom we depend, could be subject to fires, extreme weather conditions, earthquakes, power shortages, telecommunications failures, water shortages, floods, hurricanes, typhoons, war, political unrest, sabotage or terrorism and other natural or man-made disasters, as well as public health emergencies, such as the COVID-19 pandemic. The occurrence of any of these business disruptions could prevent us from using all or a significant portion of our facilities and it may be difficult or impossible for us to continue certain activities for a substantial period of time. The disaster recovery and business continuity plans we have in place may prove inadequate in the event of a serious disaster or similar event and we may incur substantial expenses and delays as a result. Our ability to manufacture our product candidates and obtain necessary clinical supplies for our product candidates could be disrupted if the operations of our contract manufacturing organizations or suppliers are affected by a natural or man-made disaster, or a public health emergency.

Our clinical trials, whether planned or ongoing, may be affected by the COVID-19 pandemic. Study procedures (particularly any procedures that may be deemed non-essential), site initiation, participant recruitment and enrollment, participant dosing, shipment of our product candidates, distribution of clinical trial materials, study monitoring, site inspections and data analysis may be paused or delayed due to changes in hospital or research institution policies, federal, state or local regulations, prioritization of hospital and other medical resources toward efforts to treat or prevent COVID-19, or other reasons related to the pandemic. In addition, there could be a potential effect of COVID-19 to the operations of the FDA or other health authorities, which could result in delays of reviews and approvals, including with respect to our product candidates. Any prolongation or de-prioritization of our clinical trials or delay in regulatory review resulting from such disruptions could materially affect the development and study of our product candidates.

The United Kingdom’s exit from the European Union as of January 31, 2020, with a transitional period up to December 31, 2020, commonly referred to as “Brexit”, has caused political and economic uncertainty, including in the regulatory framework applicable to our operations and vaccine candidates in the United Kingdom and the European Union, and this uncertainty may persist for years. Brexit could, among other outcomes, disrupt the free movement of goods, services and people between the United Kingdom and the European Union, and result in increased legal and regulatory complexities, as well as potential higher costs of conducting business in Europe. As one of the Brexit consequences, the EMA has relocated from the United Kingdom to the Netherlands. This has led to a significant reduction of the EMA workforce, which has resulted and could further result in significant disruption and delays in its administrative procedures, such as granting clinical trial authorization or opinions for marketing authorization, disruption of importation and export of active substance and other components of new drug formulations, and disruption of the supply chain for clinical trial product and final authorized formulations. As the European Union granted conditional marketing authorization for NVX-CoV2373 after January 1, 2021, it is not grandfathered in the UK. We therefore must seek to obtain a separate marketing authorization for Great Britain or “GB” (England, Scotland and Wales while the European Union conditional marketing authorization continues to be applicable in Northern Ireland), increasing our regulatory burden. The GB product license for NuvaxovidTM was granted on February 3, 2022, following a rigorous review of the safety, quality and effectiveness of this vaccine by the UK Medicines and Healthcare products Regulatory Agency and expert advice from the UK’s independent scientific advisory body, the Commission on Human Medicines.

Given that COVID-19 represents an unprecedented urgent public health crisis, that we are developing NVX-CoV2373 as a COVID-19 vaccine candidate, and that we have received significant funding from the U.S. and foreign governments and other sources to support the development and potential commercialization of NVX-CoV2373, we have observed and are likely to continue to face significant public attention and scrutiny over the complex decisions we have made and will be making regarding the development, testing, manufacturing, allocation and pricing of NVX-CoV2373. If we are unable to successfully manage these risks, we could face significant reputational harm, which could negatively affect our stock price. The intense public interest, including speculation by the media, in the development of NVX-CoV2373 has caused significant volatility in our stock price, which we expect to continue as data and other information from our ongoing clinical trials become publicly available. If concerns should arise about the actual or anticipated efficacy or safety of any of our product candidates, such concerns could adversely affect the market’s perception of these candidates, which could lead to a decline in investors’ expectations and a decline in the price of our common stock.

Social media is increasingly being used to communicate about pharmaceutical companies’ research, product candidates, and the diseases such product candidates are being developed to prevent. Social media practices in the pharmaceutical industry continue to evolve and regulations relating to such use are not always clear. This evolution creates uncertainty and risk of noncompliance with regulations applicable to our business, resulting in potential regulatory actions against us. For example, subjects may use social media channels to comment on their experience in an ongoing blinded clinical trial or to report an alleged adverse event. When such events occur, there is a risk that we fail to monitor and comply with applicable adverse event reporting obligations or we may not be able to defend our business or the public’s legitimate interests in the face of the political and market pressures generated by social media due to restrictions on what we may say about our investigational product candidates. There is also a risk of inappropriate disclosure of sensitive information or negative or inaccurate posts or comments about us on any social media or networking website. If any of these events were to occur or we otherwise fail to comply with applicable regulations, we could incur liability, face regulatory actions, or incur reputational or other harm to our business.

On November 12, 2021, Sothinathan Sinnathurai filed a purported securities class action in the U.S. District Court for the District of Maryland (the “Maryland Court”) against the Company and certain members of senior management, captioned Sothinathan Sinnathurai v. Novavax, Inc., et al., No. 8:21-cv-02910-TDC (the “Sinnathurai Action”). On January 26, 2022, the Maryland Court entered an order designating David Truong, Nuggehalli Balmukund Nandkumar, and Jeffrey Gabbert as co-lead plaintiffs in the Sinnathurai Action. The co-lead plaintiffs filed a consolidated amended complaint on March 11, 2022, alleging that the defendants made certain purportedly false and misleading statements concerning the Company’s ability to manufacture NVX-CoV2373 on a commercial scale and to secure the NVX-CoV2373’s regulatory approval. The amended complaint defines the purported class as those stockholders who purchased the Company’s securities between February 24, 2021 and October 19, 2021. On April 25, 2022, defendants filed a motion to dismiss the consolidated amended complaint. On December 12, 2022, the Maryland Court issued a ruling granting in part and denying in part defendants’ motion to dismiss. The Maryland Court dismissed all claims against two individual defendants and claims based on certain public statements challenged in the consolidated amended complaint. The Maryland Court denied the motion to dismiss as to the remaining claims and defendants, and directed the Company and other remaining defendants to answer within fourteen days. On December 27, 2022, the Company filed its answer and affirmative defenses.

After the Sinnathurai Action was filed, seven derivative lawsuits were filed: (i) Robert E. Meyer v. Stanley C. Erck, et al., No. 8:21-cv-02996-TDC (the “Meyer Action”), (ii) Shui Shing Yung v. Stanley C. Erck, et al., No. 8:21-cv-03248-TDC (the “Yung Action”), (iii) William Kirst, et al. v. Stanley C. Erck, et al., No. 8:22-cv-00024-TDC (the “Kirst Action”), (iv) Amy Snyder v. Stanley C. Erck, et al., No. 8:22-cv-01415-TDC (the “Snyder Action”), (v) Charles R. Blackburn, et al. v. Stanley C. Erck, et al., No. 1:22-cv-01417-TDC (the “Blackburn Action”), (vi) Diego J. Mesa v. Stanley C. Erck, et al. (the “Mesa Action”), and (vii) Sean Acosta v. Stanley C. Erck, et al. (the “Acosta Action”). The Meyer, Yung, Snyder, and Blackburn Actions were filed in the Maryland Court. The Kirst Action was filed in the Circuit Court for Montgomery County, Maryland, and shortly thereafter removed to the Maryland Court by the defendants. The Mesa and Acosta Actions were filed in the Delaware Court of Chancery (the “Delaware Court”). The derivative lawsuits name members of the Company’s board of directors and certain members of senior management as defendants. The Company is deemed a nominal defendant. The plaintiffs assert derivative claims arising out of substantially the same alleged facts and circumstances as the Sinnathurai Action. Collectively, the derivative complaints assert claims for breach of fiduciary duty, insider selling, unjust enrichment, violation of federal securities law, abuse of control, waste, and mismanagement. Plaintiffs seek declaratory and injunctive relief, as well as an award of monetary damages and attorneys’ fees.

On July 21, 2022, the Maryland Court issued a memorandum opinion and order remanding the Kirst Action to state court. On December 6, 2022, the parties to the Kirst Action filed a stipulated schedule pursuant to which the plaintiffs were expected to file an amended complaint on December 22, 2022, and either (i) the parties would file a stipulated stay of the Kirst Action or (ii) the defendants would file a motion to stay the case by January 23, 2023. The plaintiffs filed an amended complaint on December 30, 2022. On January 23, 2023, defendants filed a motion to stay the Kirst action. On February 22, 2023, the parties in the Kirst Action filed for the Court’s approval of a stipulation staying the Kirst Action pending the resolution of defendants’ motion to dismiss in the Second Consolidated Derivative Action. On February 24, 2023, the Court entered an order staying the Kirst Action until a final judgment in the Second Consolidated Derivative Action. The Company takes no position on whether the broader stay entered by the Court in the Kirst Action is likely to be modified to align with the parties’ stipulation.

On February 26, 2021, a Company stockholder named Thomas Golubinski filed a derivative complaint against members of the Company’s board of directors and members of senior management in the Delaware Court, captioned Thomas Golubinski v. Richard H. Douglas, et al., No. 2021-0172-JRS. The Company is deemed a nominal defendant. Golubinski challenged equity awards made in April 2020 and in June 2020 on the ground that they were “spring-loaded,” that is, made at a time when such board members or members of senior management allegedly possessed undisclosed positive material information concerning the Company. The complaint asserted claims for breach of fiduciary duty, waste, and unjust enrichment. The plaintiff sought an award of damages to the Company, an order rescinding both awards or requiring disgorgement, and an award of attorneys’ fees incurred in connection with the litigation. On May 10, 2021, the defendants moved to dismiss the complaint in its entirety. On June 17, 2021, the Company’s stockholders voted FOR ratification of the April 2020 awards and ratification of the June 2020 awards. Details of the ratification proposals are set forth in the Company’s Definitive Proxy Statement filed on May 3, 2021. The results of the vote were disclosed in the Company’s Current Report on Form 8-K filed on June 24, 2021. Thereafter, the plaintiff stipulated that, as a result of the outcome of the June 17, 2021 vote, the plaintiff no longer intends to pursue the lawsuit or any claim arising from the April 2020 and June 2020 awards. On August 23, 2021, the plaintiff filed a motion seeking an award of attorneys’ fees and expenses, to which the defendants filed an opposition. On October 18, 2022, the Delaware Court denied the plaintiff’s fee application in its entirety. Under a prior Delaware Court order, the case was automatically dismissed with prejudice upon denial of the plaintiff’s fee application. On November 14, 2022, Golubinski filed a Notice of Appeal in the Supreme Court of the State of Delaware. The plaintiff / appellant filed his opening appellate brief on December 30, 2022. The Company filed its responsive brief on January 30, 2023 and the appellant filed his reply brief on February 14, 2023.

Company repudiated the agreement and, therefore, materially breached the Gavi APA. Gavi also contends that, based on its purported termination of the Gavi APA, it is entitled to a refund of the Advance Payment Amount less any amounts that have been credited against the purchase price for binding orders placed by a buyer participating in the COVAX Facility. As of December 31, 2022, the remaining Gavi Advance Payment Amount of $697.4 million, pending resolution of the dispute with Gavi related to a return of the remaining Advance Payment Amount, was reclassified from Deferred revenue to Other current liabilities in the Company’s consolidated balance sheet. On January 24, 2023, Gavi filed a demand for arbitration with the International Court of Arbitration based on the claims described above. The Company’s response is currently due by March 2, 2023. Arbitration is inherently uncertain, and while we believe that we are entitled to retain the remaining Advance Payment Amount received from Gavi, it is possible that we could be required to refund all or a portion of the remaining Advance Payment Amount from Gavi.

Any statements in the discussion below and elsewhere in this Annual Report on Form 10-K about expectations, beliefs, plans, objectives, assumptions, or future events or performance of Novavax, Inc. (“Novavax,” together with its wholly owned subsidiaries, the “Company,” “we,” or “us”) are not historical facts and are forward-looking statements. Such forward-looking statements include, without limitation, statements about our capabilities, goals, expectations regarding future revenue and expense levels, and capital raising activities; our operating plans and prospects, including our ability to continue as a going concern through one year from the date of Novavax’ audited financial statements for the year ended December 31, 2022; potential market sizes and demand for our product candidates; the efficacy, safety, and intended utilization of our product candidates; the development of our clinical-stage product candidates and our recombinant vaccine and adjuvant technologies; the development of our preclinical product candidates; our expectations related to enrollment in our clinical trials; the conduct, timing, and potential results from clinical trials and other preclinical studies; plans for and potential timing of regulatory filings; our expectation of manufacturing capacity, timing, production, distribution, and delivery for NVX-CoV2373 by us and our partners; our estimate of the number of individuals who may potentially be reached by NVX-CoV2373; our expectations with respect to the anticipated ongoing development and commercialization or licensure of NVX-CoV2373, ongoing development of COVID-19 variant strain-containing monovalent or bivalent formulation, efforts to expand the NVX-CoV2373 label worldwide as a booster, and to various age groups and geographic locations, and our seasonal quadrivalent influenza vaccine, previously known as NanoFlu; the expected timing, content, and outcomes of regulatory actions; funding from the U.S. government partnership formerly known as Operation Warp Speed under the USG Agreement, the U.S. Department of Defense (“DoD”), and CEPI; funding under our APAs and supply agreements and amendments to, termination of, or legal disputes relating to any such agreement; our available cash resources and usage and the availability of financing generally; plans regarding partnering activities and business development initiatives; and other matters referenced herein. Generally, forward-looking statements can be identified through the use of words or phrases such as “believe,” “may,” “could,” “will,” “would,” “possible,” “can,” “estimate,” “continue,” “ongoing,” “consider,” “anticipate,” “intend,” “seek,” “plan,” “project,” “expect,” “should,” “would,” “aim,” or “assume,” the negative of these terms, or other comparable terminology, although not all forward-looking statements contain these words.

Forward-looking statements are neither historical facts nor assurances of future performance. Instead, they are based only on our current beliefs and expectations about the future of our business, future plans and strategies, projections, anticipated events and trends, the economy, and other future conditions. Forward-looking statements involve estimates, assumptions, risks, and uncertainties that could cause actual results or outcomes to differ materially from those expressed or implied in any forward-looking statements, and, therefore, you should not place considerable reliance on any such forward-looking statements. Such risks and uncertainties include, without limitation, challenges satisfying, alone or together with partners, various safety, efficacy, and product characterization requirements, including those related to process qualification and assay validation, necessary to satisfy applicable regulatory authorities, such as the FDA, the WHO, United Kingdom (“UK”) Medicines and Healthcare Products Regulatory Agency, the European Medicines Agency, the Republic of Korea’s Ministry of Food and Drug Safety, or Japan’s Ministry of Health, Labour and Welfare; unanticipated challenges or delays in conducting clinical trials; difficulty obtaining scarce raw materials and supplies; resource constraints, including human capital and manufacturing

In December 2022, we completed a public offering of 7,475,000 shares of our common stock, including 975,000 shares of common stock that were issued upon the exercise in full of the option to purchase additional shares granted to the underwriters, at a price of $10.00 per share, resulting in net proceeds of $69.8 million. Concurrently with this public offering, we issued $175.3 million aggregate principal amount of 5.00% convertible senior unsecured notes due 2027 (the “2027 Notes”), including $25.3 million that was issued upon the exercise of the full option to purchase additional notes in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended. The 2027 Notes will mature on December 15, 2027, unless earlier converted, redeemed, or repurchased. We received $166.4 million in net proceeds from the issuance of the 2027 Notes after deducting the initial purchasers’ fees and our offering expenses. See Note 11 to our consolidated financial statements in Part II, Item 8, “Financial Statements and Supplementary Data,” of this Annual Report on Form 10-K for additional information related to the 2027 Notes.

The discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with GAAP. The preparation of our consolidated financial statements requires us to make estimates, assumptions, and judgments that affect the reported amounts of assets, liabilities, and equity and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. These estimates, particularly estimates relating to accounting for grant revenue, lease accounting, pre-launch inventory, inventory valuation, and research and development expenses have a material impact on our consolidated financial statements and are discussed in detail throughout our analysis of the results of operations discussed below. We base our estimates on historical experience and various other assumptions that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets, liabilities, and equity that are not readily apparent from other sources. Actual results and outcomes could differ from these estimates and assumptions.

Our grant revenue primarily consists of funding under U.S. government contracts including the USG Agreement and the DoD Contract and was $382.9 million in 2022. We measure progress toward satisfaction of our grant performance obligations using an Estimate-at-Completion (“EAC”) process, which is a cost-based input method that reviews and monitors the progress towards the completion of our performance obligation. Under this process, we consider the costs that have been incurred to-date, as well as projections to completion using various inputs and assumptions, including, but not limited to, progress towards completion, labor costs and level of effort, material and subcontractor costs, indirect administrative costs, and other identified risks. Estimating the total allowable cost at completion of our performance obligation under a contract is subjective and requires us to make assumptions about future activity and cost drivers. Changes in these estimates can occur for a variety of reasons and, if significant, may impact the timing of revenue and fee recognition on our contracts. For our cost-reimbursable-plus-fixed-fee contracts, we recognize the fixed fee based on the proportion of reimbursable contract costs incurred to total estimated allowable contract costs expected to be incurred on completion of the underlying performance obligation as determined under the EAC process. Changes in estimates related to the EAC process are recognized in the period when such changes are made on a cumulative catch-up basis. We have not experienced any material difference as a result of change in estimate arising from the EAC process.

We enter into manufacturing supply agreements with CMOs and contract development and manufacturing organizations (“CDMOs”) to manufacture our vaccine candidates. Certain of these manufacturing supply agreements include the use of identified manufacturing facilities and equipment that are controlled by us and for which we obtain substantially all the output and may qualify as an embedded lease. The evaluation of leases that are embedded in our CMO and CDMO agreements is complex and requires judgment in determining whether the contract, either explicitly or implicitly, is for the use of an identified asset, which generally is the use of a portion of the manufacturing facility; whether we have the right to direct the use of, and obtain substantially all of the benefit from, the identified asset; the term of the lease; and the fixed lease payments under the contract. Determining the lease commencement date may require judgment because the lease commencement date may be different than the inception date of the contract. We determine the non-cancellable lease term of our embedded leases based on the impact of certain expected milestones on our option to terminate the lease where we are reasonably certain to not exercise that option. For leases that have a lease term of more than 12 months at the lease commencement date, we recognize lease liabilities and corresponding right-of-use (“ROU”) assets based on the present value of the fixed future payments over the lease term. We calculate the present value of future payments using the discount rate implicit in the lease, if available, or our incremental borrowing rate. In determining the lease period, we evaluate facts and circumstances that could affect the period over which we are reasonably certain to use the underlying asset while taking into consideration the non-cancelable period over which we have the right to use the underlying asset and any option period to extend or terminate the lease if we are reasonably certain to exercise the option. We use significant assumptions and judgment in evaluating our lease contracts and other agreements under ASC 842, including the determination of whether an agreement is or contains a lease, whether a change in the terms and conditions of a lease contract represent a new or modified lease, whether

We periodically analyze our inventories for excess amounts or obsolescence and write down obsolete or otherwise unmarketable inventory to its estimated net realizable value. We estimate excess or obsolete inventory and losses on firm purchase commitments of inventory quarterly based on multiple factors, including assumptions about expected future demand and market conditions, current sales orders, and product expiry dates. Our assumptions about expected future demand are inherently uncertain and if we were to change any of these judgments or estimates, it could cause a material increase or decrease in the amount of inventory write down that we report in a particular period. We began to capitalize inventory in 2022. Subsequently, we recorded inventory write-downs of $447.6 million and losses on firm purchase commitments of inventory of $155.9 million to the extent the cost cannot be recovered based on estimates about future demand.

We base our expenses on our estimates of the services provided and efforts expended pursuant to contracts, statements of work and related change orders with the service provider, and discussion with internal personnel and external service providers as to the progress of the services and the agreed-upon fee to be paid for such services. The financial terms of these agreements are based on negotiated terms, vary from contract to contract, and may result in an uneven level of activity over time. There may be instances in which payments made to our vendors will exceed the level of services provided and result in a prepayment of the expense. Additionally, invoicing from third-party service providers may not coincide with actual work performed and can result in a prepaid or an accrual position at the end of the period. The estimation process requires us to make significant judgments and estimates in determining the services incurred as of the balance sheet date, which may result in either a prepaid or an accrual balance. As actual costs become known, we adjust our estimates. Although we do not expect our estimates to be materially different from amounts actually incurred, our understanding of the status and timing of services performed may vary from the related estimates and could result in us reporting amounts that are too high or too low in a particular period. Our prepaid and accrued expenses are dependent, in part, upon the receipt of timely and accurate reporting from CROs, CMOs, CDMOs, and third-party service providers. Due to the nature of the estimation process, there may be a difference between estimated costs and actual costs incurred. Historically, we have not experienced any material differences in prior periods.

Cost of sales was $902.6 million, or 58% of product sales, for 2022, including expense of $603.5 million related to excess or obsolete inventory and losses on firm purchase commitments. Prior to receiving regulatory approval, we expensed manufacturing costs as research and development expenses. After receiving regulatory approval, we capitalize the costs of production for a particular supply chain when we determine that we have a present right to the economic benefit associated with the product. While we tracked the quantities of our manufactured vaccine product and components, we did not track pre-approval manufacturing costs and therefore the manufacturing cost of our pre-launch inventory produced prior to approval is not reasonably determinable. However, based on our expectations for future manufacturing costs to produce our vaccine product and components inventory, we estimate at December 31, 2022 we had approximately $30.6 million of commercial inventory that was expensed prior to approval. We expect to utilize the majority of our reduced-cost inventory through 2023. If inventory and pre-launch inventory sold in 2022 was valued at expected standard cost, including expenses related to excess and obsolete inventory and losses on firm purchase commitments, adjusted cost of sales for the period would have been approximately $1,067.4 million, or 69% of product sales, an adjustment of $164.8 million as compared to cost of sales recognized. The cost of sales as a percentage of product sales may fluctuate in the future as a result of changes to our customer pricing mix or standard costs.

Our future capital requirements depend on numerous factors including, but not limited to, revenue from our product sales and royalties under licensing arrangements with our strategic partners; funding and repayments under our grant agreements; our projected activities related to the development and commercial support of NVX-CoV2373 and variant candidates, including significant commitments under various CRO, CMO, and CDMO agreements; the progress of preclinical studies and clinical trials; the time and costs involved in obtaining regulatory approvals; the costs of filing, prosecuting, defending, and enforcing patent claims and other intellectual property rights; and other manufacturing, sales, and distribution costs. We plan to continue developing other vaccines and product candidates, such as our influenza vaccine candidate and potential combination vaccines candidates, which are in various stages of development.

We have entered into supply agreements, sometimes referred to as APAs, with the EC and various countries globally. We also have grant and license agreements. As of December 31, 2022, the aggregate amount of the transaction price allocated to performance obligations that were unsatisfied (or partially unsatisfied), excluding amounts related to sales-based royalties under the licensing agreements, was approximately $3 billion, which excludes amounts related to the Gavi APA and the reduction in doses related to the Amended and Restated UK Supply Agreement, as defined below. Failure to meet regulatory milestones, obtain timely supportive recommendations from governmental advisory committees, or achieve product volume or delivery timing obligations under our APAs may require us to refund portions of upfront payments or result in reduced future payments, which could adversely impact our ability to realize revenue from our unsatisfied performance obligations. The timing to fulfill performance obligations related to grant agreements will depend on the results of our research and development activities, including clinical trials, and delivery of doses. The timing to fulfill performance obligations related to supply agreements will depend on timing of product manufacturing, receipt of marketing authorizations for additional indications, delivery of doses based on customer demand, and the ability of the customer to request variant vaccine in place of the prototype NVX-CoV2373 vaccine under certain of our APAs. The supply agreements typically contain terms that include upfront payments intended to assist us in funding investments related to building out and operating our manufacturing and distribution network, among other expenses, in support of our global supply commitment, and are applied to billings upon delivery of NVX-CoV2373. Such upfront payments generally become non-refundable upon our achievement of certain development, regulatory, and commercial milestones.

In July 2022, we entered into an Amended and Restated SARS-CoV-2 Vaccine Supply Agreement (as amended on September 26, 2022, the “Amended and Restated UK Supply Agreement”) with The Secretary of State for Business, Energy and Industrial Strategy (as assigned to the UK Health Security Agency), acting on behalf of the government of the United Kingdom of Great Britain and Northern Ireland (the “Authority”), which amended and restated in its entirety the SARS-CoV-2 Vaccine Supply Agreement, dated October 22, 2020, between the parties (the “Original UK Supply Agreement”). Under the Original UK Supply Agreement, the Authority agreed to purchase 60 million doses of NVX-CoV2373 and made an upfront payment to us. Under the terms of the Amended and Restated UK Supply Agreement, the Authority agreed to purchase a minimum of 1 million doses and up to an additional 15 million doses (the “Conditional Doses”) of NVX-CoV2373, with the number of Conditional Doses contingent on, and subject to reduction based on, our timely achievement of supportive recommendations from the Joint Committee on Vaccination and Immunisation (the “JCVI”) that is approved by the UK Secretary of State for Health, with respect to use of the vaccine for (a) the general adult population as part of a SARS-CoV-2 vaccine booster campaign in the United Kingdom or (b) the general adolescent population as part of a SARS-CoV-2 vaccine booster campaign in the United Kingdom or as a primary series SARS-CoV-2 vaccination, excluding where that recommendation relates only to one or more population groups comprising less than one million members in the United Kingdom. If the Authority does not purchase the Conditional Doses or the number of such Conditional Doses is reduced below 15 million doses of NVX-CoV2373, we would have to repay up to $225.0 million related to the upfront payment previously received from the Authority under the Original UK Supply Agreement. Under the Amended and Restated UK Supply Agreement, the Authority also has the option to purchase up to an additional 44 million doses, in one or more tranches, through 2024.

Under the terms of the Gavi APA, we received an upfront payment of $350.0 million from Gavi in 2021 and an additional payment of $350.0 million in the first quarter of 2022 related to our achieving EUL for NVX-CoV2373 by the WHO (the “Advance Payment Amount”). On November 18, 2022, we delivered written notice to Gavi to terminate the Gavi APA on the basis of Gavi’s failure to procure the purchase of 350 million doses of NVX-CoV2373 from us as required by the Gavi APA. As of November 18, 2022, we had only received orders under the Gavi APA for approximately 2 million doses. On December 2, 2022, Gavi issued a written notice purporting to terminate the Gavi APA based on Gavi’s contention that the Company repudiated the agreement and, therefore, materially breached the Gavi APA. Gavi also contends that, based on its purported termination of the Gavi APA, it is entitled to a refund of the Advance Payment Amount less any amounts that have been credited against the purchase price for binding orders placed by a buyer participating in the COVAX Facility. As of December 31, 2022, the remaining Gavi Advance Payment Amount of $697.4 million, pending resolution of the dispute with Gavi related to a return of the remaining Advance Payment Amount, was reclassified from Deferred revenue to Other current liabilities in our consolidated balance sheet. On January 24, 2023, Gavi filed a demand for arbitration with the International Court of Arbitration based on the claims described above. Our response is currently due by March 2, 2023. Arbitration is inherently uncertain, and while we believe that we are entitled to retain the remaining Advance Payment Amount received from Gavi, it is possible that we could be required to refund all or a portion of the remaining Advance Payment Amount from Gavi.

In July 2022, we entered into a modification to the USG Agreement that amended the terms of such agreement to provide for (i) an initial delivery to the U.S. government of approximately 3 million doses of NVX-CoV2373 and (ii) any additional manufacture and delivery to the U.S. government up to an aggregate of 100 million doses of NVX-CoV2373 contemplated by the original USG Agreement (inclusive of the initial batch of approximately 3 million doses) dependent on U.S. government demand, FDA guidance on strain selection, agreement between the parties on the price of such doses, and available funding. Additionally, in July 2022, we entered into a modification to our existing agreement with the DoD that amended the terms of such agreement to provide for the initial delivery of 0.2 million doses of NVX-CoV2373 after receipt of EUA approval from the FDA, with delivery of the remaining 9.8 million doses of NVX-CoV2373 contemplated by the original agreement subject to DoD demand and available funding. In February 2023, in connection with the execution of Modification 17 to the USG Agreement, the U.S. government indicated to us that the award may not be extended past its current period of performance. If the USG Agreement is not amended, as we had previously expected, then we may not receive all of the remaining $416 million in funding we had previously anticipated pursuant to the USG Agreement.

While our current cash flow forecast for the one-year going concern look forward period estimates that we have sufficient capital available to fund operations, this forecast is subject to significant uncertainty, including as it relates to 2023 revenue, funding from the U.S. government, and pending arbitration. Our 2023 revenue depends on our ability to successfully develop, manufacture, distribute, or market an updated monovalent or bivalent formulation of a vaccine candidate for COVID-19 for the fall 2023 COVID vaccine season, which is inherently uncertain and subject to a number of risks, including regulatory approval. See “Risk Factors—Risks Related to Product Development and Commercialization—The emergence and transmissibility of variants of the SARS-CoV-2 virus, and the demand for bivalent vaccines, may affect market acceptance or sales of NVX-CoV2373, and our strategy to develop versions of our COVID-19 vaccine to protect against certain variants may not be successful.” In February 2023, in connection with the execution of Modification 17 to the USG Agreement, the U.S. government indicated to us that the award may not be extended past its current period of performance, which may result in us not receiving all of the remaining $416 million in funding we had previously anticipated. See “Risk Factors—Risks Related to Our Financial Condition and Capital Requirements—Our existing funding and supply agreements do not assure success of our vaccine candidates or that we will be able to fully fund our vaccine candidates.” On January 24, 2023, Gavi filed a demand for arbitration with the International Court of Arbitration regarding an alleged material breach by us of the Gavi APA. The outcome of that arbitration is inherently uncertain, and it is possible we could be required to refund all or a portion of the remaining Advance payment Amount of $697.4 million. See Note 3 and Note 18 to our consolidated financial statements in Part II, Item 8,


						Inventory Excess and Obsolescence Reserve
Description of the Matter						As of December 31, 2022, the Company had $36.7 million of inventory. As disclosed in Note 2, inventories are stated at the lower of cost or net realizable value. The Company assesses its inventory levels each reporting period and writes down inventory that is either expected to be at risk of expiration prior to sale, or for which there are inventory quantities in excess of expected requirements. For the year ended December 31, 2022, inventory write-downs were $447.6 million and losses on firm purchase commitments were $155.9 million. Auditing management's estimates for excess and obsolete inventory involved subjective auditor judgment because the estimates rely on a number of factors that are affected by market and economic conditions outside the Company's control. In particular, the obsolete and excess inventory calculations are sensitive to significant assumptions, including the expected demand for the Company’s products, assumptions about the vaccine’s life cycle, the effect on demand of competitive products and the Company's purchase commitments.
How We Addressed the Matter in Our Audit						We obtained an understanding, evaluated the design, and tested the operating effectiveness of internal controls over the Company's excess and obsolete inventory reserve process including management’s review of the significant assumptions described above and controls over the completeness and accuracy of the information used to develop the estimate. Our substantive audit procedures included, among others, evaluating methodologies, assumptions and data utilized in the analysis for inventory expected to be at risk for expiration or excess. We evaluated purchase commitments or alternative uses, compared forecasted demand to historical trends, compared actual inventory levels to forecasted demand requirements and evaluated the sensitivity of sales forecast assumptions on the amount of inventory reserves recorded.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.


	December 31,
	2022		2021
ASSETS
Current assets:
Cash and cash equivalents	$	1,336,883	$	1,515,116
Restricted cash	10,303		11,490
Accounts receivable	82,375		454,993
Inventory	36,683		8,872
Prepaid expenses and other current assets	237,147		164,648
Total current assets	1,703,391		2,155,119
Property and equipment, net	294,247		225,741
Right of use asset, net	106,241		40,123
Goodwill	126,331		131,479
Other non-current assets	28,469		24,291
Total assets	$	2,258,679	$	2,576,753
LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT)
Current liabilities:
Accounts payable	$	216,517	$	127,050
Accrued expenses	591,158		673,731
Deferred revenue	370,137		1,422,944
Current portion of finance lease liabilities	27,196		130,533
Convertible notes payable	324,881		—
Other current liabilities	930,055		36,061
Total current liabilities	2,459,944		2,390,319
Deferred revenue	179,414		172,528
Convertible notes payable	166,466		323,458
Non-current finance lease liabilities	31,238		—
Other non-current liabilities	55,695		42,121
Total liabilities	2,892,757		2,928,426

Commitments and contingencies (Note 18)

Preferred stock, $0.01 par value, 2,000,000 shares authorized at December 31, 2022 and 2021; no shares issued and outstanding at December 31, 2022 and 2021	—		—

Stockholders’ equity (deficit):
Common stock, $0.01 par value, 600,000,000 shares authorized at December 31, 2022 and 2021; and 86,806,554 shares issued and 86,039,923 shares outstanding at December 31, 2022 and 76,433,151 shares issued and 75,841,171 shares outstanding at December 31, 2021	868		764
Additional paid-in capital	3,737,979		3,351,967
Accumulated deficit	(4,275,889)		(3,617,950)
Treasury stock, 766,631 shares, cost basis at December 31, 2022 and 591,980 shares, cost basis at December 31, 2021	(90,659)		(85,101)
Accumulated other comprehensive loss	(6,377)		(1,353)
Total stockholders’ equity (deficit)	(634,078)		(351,673)
Total liabilities and stockholders’ equity (deficit)	$	2,258,679	$	2,576,753


	Common Stock			Additional Paid-in Capital		Accumulated Deficit		Treasury Stock		Accumulated Other Comprehensive Income (Loss)		Total Stockholders’ Equity (Deficit)
	Shares	Amount
Balance at December 31, 2019	32,399,352	$	324	$	1,260,551	$	(1,431,801)	$	(2,583)	$	(12,508)	$	(186,017)
Preferred stock beneficial conversion feature	—	—		24,139		(24,139)		—		—		—
Conversion of preferred stock	4,388,850	44		199,778		—		—		—		199,822
Stock-based compensation	—	—		128,035		—		—		—		128,035
Stock issued under incentive programs	2,168,725	22		44,447		—		(39,223)		—		5,246
Issuance of common stock, net of issuance costs of $11,416	32,393,438	324		878,526		—		—		—		878,850
Unrealized gain on marketable securities	—	—		—		—		—		9		9
Foreign currency translation adjustment	—	—		—		—		—		19,523		19,523
Net loss	—	—		—		(418,259)		—		—		(418,259)
Balance at December 31, 2020	71,350,365	714		2,535,476		(1,874,199)		(41,806)		7,024		627,209
Stock-based compensation	—	—		183,626		—		—		—		183,626
Stock issued under incentive programs	2,503,819	24		68,032		—		(43,295)		—		24,761
Issuance of common stock, net of issuance costs of $7,292	2,578,967	26		564,833		—		—		—		564,859
Unrealized gain on marketable securities	—	—		—		—		—		(9)		(9)
Foreign currency translation adjustment	—	—		—		—		—		(8,368)		(8,368)
Net loss	—	—		—		(1,743,751)		—		—		(1,743,751)
Balance at December 31, 2021	76,433,151	764		3,351,967		(3,617,950)		(85,101)		(1,353)		(351,673)
Stock-based compensation	—	—		131,967		—		—		—		131,967
Stock issued under incentive programs	701,005	7		4,912		—		(5,558)		—		(639)
Issuance of common stock, net of issuance costs of $7,216	9,672,398	97		249,133		—		—		—		249,230

Foreign currency translation adjustment	—	—		—		—		—		(5,024)		(5,024)
Net loss	—	—		—		(657,939)		—		—		(657,939)
Balance at December 31, 2022	86,806,554	$	868	$	3,737,979	$	(4,275,889)	$	(90,659)	$	(6,377)	$	(634,078)


	Year Ended December 31,
	2022		2021		2020
Operating Activities:
Net loss	$	(657,939)	$	(1,743,751)	$	(418,259)
Reconciliation of net loss to net cash used in operating activities:
Depreciation and amortization	29,054		12,661		4,885
Right-of-use assets expensed, net of credits received	18,104		144,433		245,861
Non-cash stock-based compensation	130,300		183,626		128,035
Provision for excess and obsolete inventory	447,597		—		—
Other items, net	(21,903)		(7,641)		(15,080)
Changes in operating assets and liabilities:
Inventory	(477,801)		(8,872)		—
Accounts receivable, prepaid expenses, and other assets	249,166		(183,393)		(422,689)
Accounts payable, accrued expenses, and other liabilities	913,399		600,326		163,161
Deferred revenue	(1,045,914)		1,325,557		271,545
Net cash provided by (used in) operating activities	(415,937)		322,946		(42,541)
Investing Activities:
Capital expenditures	(89,056)		(54,501)		(54,473)
Internal-use software	(3,929)		(2,985)		(149)
Acquisition of Novavax CZ, net of cash acquired	—		—		(165,516)
Purchases of marketable securities	—		(2,167)		(363,202)
Proceeds from maturities of marketable securities	—		159,807		205,562
Net cash provided by (used in) investing activities	(92,985)		100,154		(377,778)
Financing Activities:
Net proceeds from sale of preferred stock	—		—		199,822
Net proceeds from sales of common stock	249,230		564,859		875,623
Proceeds from issuance of convertible notes	175,250		—		—
Payments of costs related to issuance of convertible notes	(5,258)		—		—
Net proceeds from the exercise of stock-based awards	(639)		24,761		5,382
Finance lease payments	(93,595)		(127,907)		(96,065)
Net cash provided by financing activities	324,988		461,713		984,762
Effect of exchange rate on cash, cash equivalents, and restricted cash	4,520		(5,292)		2,115
Net increase in cash, cash equivalents, and restricted cash	(179,414)		879,521		566,558
Cash, cash equivalents, and restricted cash at beginning of year	1,528,259		648,738		82,180
Cash, cash equivalents, and restricted cash at end of year	$	1,348,845	$	1,528,259	$	648,738
Supplemental disclosure of non-cash activities:
Sale of common stock under the Sales Agreement not settled at year-end	$	—	$	—	$	3,227
Capital expenditures included in accounts payable and accrued expenses	$	17,665	$	10,338	$	9,255
Right-of-use assets from new lease agreements	$	91,855	$	179,210	$	247,599
Supplemental disclosure of cash flow information:
Cash interest payments, net of amounts capitalized	$	18,035	$	19,428	$	13,705
Cash paid for income taxes	$	17,980	$	12,606	$	—

In June 2020, the Company entered into a redeemable Series A Convertible Preferred Stock Subscription Agreement, pursuant to which the Company agreed to issue and sell in a private placement 438,885 shares of its newly designated redeemable Series A Convertible Preferred Stock, par value $0.01 per share (“Preferred Stock”), at a purchase price of $455.70 per share, for total gross proceeds of $200.0 million. During the fourth quarter of 2020, all outstanding shares of Preferred Stock were converted and the Company issued 4,388,850 shares of common stock, par value $0.01 per share, and reclassified $199.8 million from Preferred stock to Additional paid-in capital. The Company recognized a beneficial conversion feature of approximately $24.1 million at the time of issuance of the Preferred Stock that was recorded in Additional paid-in capital and Accumulated deficit as the Preferred Stock issuance was contingently redeemable and convertible at any time at the option of the holder.


Delaware		22-2816046
(State of incorporation)		(I.R.S. Employer Identification No.)

21 Firstfield Road,
Gaithersburg,	Maryland	20878
(Address of principal executive offices)		(Zip Code)


Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock, Par Value $0.01 per share	NVAX	The Nasdaq Global Select Market


Large accelerated filer	☒	Accelerated filer	☐

Non-accelerated filer	☐	Smaller reporting company	☐

Emerging growth company	☐


		Page
	PART I
Item 1.	BUSINESS	4
Item 1A.	RISK FACTORS	30
Item 1B.	UNRESOLVED STAFF COMMENTS	68
Item 2.	PROPERTIES	68
Item 3.	LEGAL PROCEEDINGS	68
Item 4.	MINE SAFETY DISCLOSURES	70

	PART II
Item 5.	MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS, AND ISSUER PURCHASES OF EQUITY SECURITIES	71
Item 6.	RESERVED	72
Item 7.	MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	72
Item 7A.	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	85
Item 8.	FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA	85
Item 9.	CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE	85
Item 9A.	CONTROLS AND PROCEDURES	85
Item 9B.	OTHER INFORMATION	86
Item 9C.	DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS	86

	PART III
Item 10.	DIRECTORS, EXECUTIVE OFFICERS , AND CORPORATE GOVERNANCE	87
Item 11.	EXECUTIVE COMPENSATION	87
Item 12.	SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS	87
Item 13.	CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE	87
Item 14.	PRINCIPAL ACCOUNTING FEES AND SERVICES	87

	PART IV
Item 15.	EXHIBITS AND FINANCIAL STATEMENT SCHEDULES	88
Item 16.	FORM 10-K SUMMARY	95


Funding Partner	Amount	Additional Details
CEPI	$399.5 million	•Entitled to received up to $399.5 million of funding to support the development of NVX-CoV2373 •To supply NVX-CoV2373 through the COVAX Facility
U.S. Department of Defense (“DoD”)	$45.7 million	•Entitled to received up to $45.7 million of funding to support the development of NVX-CoV2373 •To manufacture and deliver up to 10 million doses of NVX-CoV2373 to the U.S. government •Contract term ended in December 2022
U.S. Government through USG Agreement	$1.8 billion	•Allotted $1.8 billion to support the development of NVX-CoV2373 •To manufacture and deliver up to 100 million doses of NVX-CoV2373 to the U.S. government


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


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


Serum Institute of India Private Limited	Covovax™	•India •COVAX Facility •The Philippines •Indonesia •South Africa •Bangladesh
Takeda Pharmaceutical Company Limited	Nuvaxovid™	•Japan •South Korea
SK bioscience Co., Ltd.	Nuvaxovid™	•South Korea(1)


	December 31,
	2017		2018		2019		2020		2021		2022
Novavax, Inc.	$	100	$	148.39	$	16.05	$	449.64	$	576.9	$	41.45
NASDAQ Composite	$	100	$	97.16	$	132.81	$	192.47	$	235.15	$	158.65
Russell 2000 Growth Biotechnology	$	100	$	82.47	$	120.36	$	187.09	$	130.2	$	94.86


	2022		2021		Change
Revenue (in thousands):
Product sales	$	1,554,961	$	—	$	1,554,961
Grants	382,921		948,709		(565,788)
Royalties and other	43,990		197,581		(153,591)
Total revenue	$	1,981,872	$	1,146,290	$	835,582


	2022
North America	$	194,480
Europe	823,542
Rest of the world	536,939
Total product revenue	$	1,554,961


	2022		2021
Research and Development Expenses (in thousands):
Coronavirus vaccines	$	848,042	$	2,245,935
Influenza vaccine	7,163		7,761
Other vaccine development programs	2,658		818
Total direct external research and development expense	857,863		2,254,514
Employee expenses	180,168		130,576
Stock-based compensation expense	66,565		86,928
Facility expenses	60,428		26,100
Other expenses	70,254		36,390
Total research and development expenses	$	1,235,278	$	2,534,508


Contractual Obligations:	Total		Less than One Year		1 – 3 Years		3 – 5 Years		More than 5 Years
Operating leases	$	74,853	$	18,182	$	29,354	$	14,791	$	12,526
Finance leases obligation	74,837		29,153		5,680		5,968		34,036
Convertible notes(1)	500,250		325,000		—		175,250		—
Contractual obligations recognized as of December 31, 2022	649,940		372,335		35,034		196,009		46,562
Purchase commitments(2)	560,638		560,638		—		—		—
Facilities lease agreement(3)	56,109		3,397		7,050		7,407		38,255
Total contractual obligations	$	1,266,687	$	936,370	$	42,084	$	203,416	$	84,817


Reports of Independent Registered Public Accounting Firm (PCAOB ID:42)			F- 2
Consolidated Statements of Operations and Statements of Comprehensive Loss for the years ended December 31, 2022, 2021, and 2020			F- 5
Consolidated Balance Sheets as of December 31, 2022 and 2021			F- 6
Consolidated Statements of Stockholders’ Equity (Deficit) for the years ended December 31, 2022, 2021 , and 2020			F- 7
Consolidated Statements of Cash Flows for the years ended December 31, 2 022, 2021 , and 2020			F- 8
Notes to Consolidated Financial Statements			F- 9


Exhibit Number						Description

3.1						Second Amended and Restated Certificate of Incorporation of the Company (Incorporated by reference to Exhibit 3.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2015, filed on August 10, 2015 (File No. 000-26770))

3.2						Certificate of Amendment to the Second Amended and Restated Certificate of Incorporation of the Company (Incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed on May 9, 2019 (File No. 000-26770))

3.3						Amended and Restated By-Laws of the Company (Incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed on June 24, 2021 (File No. 000-26770))

3.4						Certificate of Designation of Series A Convertible Preferred Stock of the Registrant (Incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K filed June 19, 2020 (File No. 000-26770))

4.1						Specimen stock certificate for shares of common stock of the Company, par value $.01 per share (Incorporated by reference to Exhibit 4.1 to the Company’s Registration Statement on Form S-3, filed on December 31, 2019 (File No. 333-235761))

4.2						Indenture (including form of Notes) with respect to the Company's 5 .00 % Convertible Senior Notes due 202 7 , dated as of December 20 , 20 22 , between the Company and The Bank of New York Mellon Trust Company, N.A., as trustee (Incorporated by reference to Exhibit 4.1 to the Company’s Current Report on Form 8-K, filed on December 21, 2022 (File No. 000-26770))

4.3						Form of Series A Convertible Preferred Stock Certificate of the Company (Incorporated by reference to Exhibit 4.1 to the Company's Current Report on Form 8-K filed June 19, 2020 (File No. 000-26770))


Licensee			Marketed Under			Territories


	2022		2021		Change
Other Expense, Net (in thousands):
Interest expense	$	(19,880)	$	(21,127)	$	1,247
Other income (expense)	10,969		(6,833)		17,802
Total other expense, net	$	(8,911)	$	(27,960)	$	19,049


			NOVAVAX, INC.

			By:			/s/ John C. Jacobs
						John C. Jacobs
						President and Chief Executive Officer


4.4*						Description of the Company's Securities

10.1††						The Company's Amended and Restated 2005 Stock Incentive Plan (Incorporated by reference to Exhibit 10.2 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2012, filed on March 12, 2013 (File No. 000-26770))

10.2††						Amendment to Amended and Restated 2005 Stock Incentive Plan (Incorporated by reference to Appendix 1 of the Company ’s Definitive Proxy Statement filed on April 30, 2014 in connection with the Annual Meeting held on June 12, 2014 (File No. 000-26770))

10.3††						Form of Non-Statutory Stock Option Award Agreement granted under the Company's Amended and Restated 2005 Stock Incentive Plan (Incorporated by reference to Exhibit 10.4 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2014, filed on February 27, 2015 (File No. 000-26770))

10.4††						Form of Incentive Stock Option Award Agreement granted under the Company's Amended and Restated 2005 Stock Incentive Plan (Incorporated by reference to Exhibit 10.5 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2014, filed on February 27, 2015 (File No. 000-26770))

10.5††						Amended and Restated Novavax, I n c. 2 013 Employee Stock Purchase Plan (Incorporated by reference to Appendix D of the C o mpany ’s Definitive Proxy Statement filed on May 2, 2022 in connection with the A n nual Meeting held on June 16, 2022 (File No. 000-26770))

10.6††						Amended and Restated Novavax, Inc. 2015 Stock Incentive Plan (Incorporated by reference to Appendix Appendix C of the Company’s Definitive Proxy Statement filed on May 2, 2022 in connection with the Annual Meeting held on June 16, 2022 (File No. 000-26770))

10.7††						Form of Non-Statutory Stock Option Award Agreement granted under the Amended and Restated Novavax, Inc. 2015 Stock Incentive Plan (Incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2015, filed on August 10, 2015 (File No. 000-26770))

10.8††						Form of Incentive Stock Option Award Agreement granted under the Amended and Restated Novavax, I n c. 2015 Stock Incentive Plan (Incorporated by reference to Exhibit 10.4 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2015, filed on August 10, 2015 (File No. 000-26770))

10.9††						Form of Incentive Stock Option Award Agreement granted under the Amended and Restated Novavax, Inc. 2015 Stock Incentive Plan (Incorporated by reference to Exhibit 10.9 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2016, filed on February 27, 2017 (File No. 000-26770))

10.10††						Form of Incentive Stock Option Agreement granted under the Amended and Restated Novavax, Inc. 2015 Stock Incentive Plan (Performance- and Time-Based Vesting) (Incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K, filed on November 16, 2016 (File No. 000-26770))

10.11††						Form of Restricted Stock Award Agreement granted under the Amended and Restated Novavax, Inc. 2015 Stock Incentive Plan (Incorporated by reference to Exhibit 10.5 to the Company ’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2015, filed on August 10, 2015 (File No. 000-26770))

10.12††						Form of Restricted Stock Unit Agreement granted under the Amended and Restated Novavax, I nc . 2015 Stock Incentive Plan (Incorporated by reference to Exhibit 10.12 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2019, filed on March 18, 2019 (File No. 000-26770))

10.13††						Form of Stock Appreciation Right Award Agreement granted under the Amended and Restated Novavax, Inc. 2015 Stock Incentive Plan (Incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2019, filed on November 7, 2019 (File No. 000-26770))

10.14††						Form of Director Deferred Fee Agreement (Incorporated by reference to Exhibit 10.10 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2015, filed on February 29, 2016 (File No. 000-26770))

10.15††						Novavax, Inc. 2023 Inducement Plan (Incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K, filed on January 9, 2023 (File No. 000-26770))

10.16††						Form of Non-Statutory Stock Option Agreement under the Novavax, Inc. 2023 Inducement Plan (Incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K, filed on January 9, 2023 (File No. 000-26770))


10.17††						Form of Restricted Stock Unit Award Agreement under the Novavax, Inc. 2023 Inducement Plan (Incorporated by reference to Exhibit 10.3 to the Company’s Current Report on Form 8-K, filed on January 9, 2023 (File No. 000-26770))

10.18††*						Employment Agreement between the Company and John C. Jacobs, dated as of January 5, 2023

10.19††						Employment Agreement between the Company and Stanley C. Erck, dated as of June 22, 2011 (Incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2011, filed on August 9, 2011 (File No. 000-26770))

10.20††*						Consulting and Advisory Agreement between the Company and Stanley C. Erck, dated as of January 5, 2023

10.21††						Employment Agreement between the Company and Gregory M. Glenn dated July 1, 2010 (Incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K, filed on July 6, 2010 (File No. 000-26770))

10.22††						Employment Agreement between the Company and John A. Herrmann dated April 1, 2012 (Incorporated by reference to Exhibit 10.2 to the Company's Quarterly Report on Form 10-Q for the quarter ended March 31, 2016, filed on May 5, 2016 (File No. 000-26770))

10.23††						E mployment Agreement between the Company and John J. Trizzino dated March 3, 2014 (Incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2016, filed on May 5, 2016 (File No. 000-26770))

10.24††						Employment Agreement between the Company and James P. Kelly dated July 12, 2021 (Incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, filed on November 5, 2021 (File No. 000-26770))

10.25††						Offer letter to James P. Kelly dated July 12, 2021 (Incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, filed on November 5, 2021 (File No. 000-26770))

10.26††						Form of Amendment to Employment Agreement, dated June 17, 2021, between the Company and each of Stanley C. Erck, Gregory M. Glenn, John J. Trizzino and John A. Herrmann, III (Incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2021, filed on August 5, 2021 (File No. 000-26770))

10.27††						Company Amended and Restated Change in Control Severance Benefit Plan (Incorporated by reference to Exhibit 10.4 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2021, filed on August 5, 2021 (File No. 000-26770))

10.28††						Form of Indemnification Agreement entered into between the Company and its directors and officers (Incorporated by reference to Exhibit 10.19 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2009, filed on March 16, 2010 (File No. 000-26770))

10.29						Lease Agreement for space at 22 Firstfield Road between ARE-20/22/1300 Firstfield Quince Orchard, LLC and the Company, dated as of November 18, 2011 (Incorporated by reference to Exhibit 10.25 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2011, filed on March 14, 2012 (File No. 000-26770))

10.30						Deed of Lease for space at 21 Firstfield Road between Firstfield Holdco, LLC and the Company, dated as of February 4, 2015 (Incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K, filed on August 21, 2015 (File No. 000-26770))

10.31						First Amendment to Deed of Lease for space at 21 Firstfield Road between Firstfield Holdco, LLC and the Company, dated as of August 17, 2015 (Incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K, filed on August 21, 2015 (File No. 000-26770))

10.32						Second Amendment to Deed of Lease for space at 21 Firstfield Road between BMR-Firstfield LLC (formerly Firstfield Holdco, LLC) and the Company, dated as of March 31, 2017 (Incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017, filed on May 8, 2017 (File No. 000-26770))


10.33						Deed of Lease for space at 700 Quince Orchard Road between ARE-MARYLAND NO. 51, LLC and the Company, dated October 22, 2020 (Incorporated by reference to Exhibit 10.27 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, filed on March 1, 2021 (File No. 000-26770))

10.34						Amendment to Deed of Lease for space at 700 Quince Orchard Road between ARE-MARYLAND NO. 51, LLC and the Company, dated June 22, 2021 (Incorporated by reference to Exhibit 10.33 to the C o mpany ’s Annual Report on F o rm 10-K for the year ended December 31, 2021, filed on March 1, 2022 (F il e No. 000-26770))

10.35^						Amended and Restated Supply and License Agreement, dated July 1, 2021, between the Company and Serum Institute of India Private Limited (Incorporated by reference to Exhibit 10.4 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, filed on November 5, 2021 (File No. 000-26770))

10.36^						Supply Agreement between the Company, Serum Institute of India Private Limited and Serum Life Sciences Limited, executed as of October 26, 2021 (Incorporated by reference to Exhibit 10.3 7 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, filed on March 1, 2022 (File No. 000-26770))

10.37^						Contract Development Manufacture Agreement, dated October 21, 2021, between the Company and Serum Life Sciences Limited (Incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2022, filed on August 8, 2022 (File No. 000-26770))

10.38^						Amendment No. 1 to the Contract Development Manufacture Agreement, executed as of April 29, 2022, between the Company and Serum Life Sciences Limited (Incorporated by reference to Exhibit 10.4 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2022, filed on August 8, 2022 (File No. 000-26770))

10.39^						Statement of Work No. 1 to the Contract Development Manufacture Agreement, effective as of April 29, 2022, between the Company and Serum Life Sciences Limited (Incorporated by reference to Exhibit 10.5 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2022, filed on August 8, 2022 (File No. 000-26770))

10.40^						Collaboration and Exclusive License Agreement between the Company and SK bioscience Company Limited, dated as of February 12, 2021 (Incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2021, filed on May 10, 2021 (File No. 000-26770))

10.41^						Amendment to Collaboration and Exclusive License Agreement between the Company and SK bioscience Company Limited, dated as of December 23, 2021 (Incorporated by reference to Exhibit 10.39 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, filed on March 1, 2022 (File No. 000-26770))

10.42^						Statement of Work No. 1 to Collaboration and Exclusive License Agreement between the Company and SK bioscience Company Limited, dated as of December 23, 2021 (Incorporated by reference to Exhibit 10.40 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, filed on March 1, 2022 (File No. 000-26770))

10.43^						Change Order No. 1 to Statement of Work No. 1 to Collaboration and Exclusive License Agreement between the Company and SK bioscience Company Limited, dated as of March 31, 2022 (Incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2022, filed on May 9, 2022 (File No. 000-26770))

10.44^						Collaboration and Exclusive License Agreement between the Company and Takeda Pharmaceutical Company Limited, dated as of February 24, 2021 (Incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2021, filed on May 10, 2021 (File No. 000-26770))

10.45**						Global Access Commitments Agreement between Bill & Melinda Gates Foundation and the Company, dated as of September 25, 2015 (Incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2015, filed on November 9, 2015 (File No. 000-26770))


10.46^						Asset Purchase Agreement between Company and Paragon Bioservices, Inc., dated June 26, 2019 (Incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2019, filed on August 7, 2019 (File No. 000-26770))

10.47^						Amended and Restated SARS-CoV-2 Vaccine Supply Agreement, dated as of July 1, 2022 , between the Company and The Secretary of State for Business, Energy and Industrial Strategy, acting on behalf of the government of the United Kingdom of Great Britain and Northern Ireland (Incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the q uarter ended September 30, 2022 , filed on N o vember 9, 2022 (File No. 000-26770))

10.48^						Letter of Amendment to the Amended and Restated SARS-CoV-2 Vaccine Supply Agreement, dated as of September 26, 2022, between the Company and The Secretary of State for Business, Energy and Industrial Strategy, acting on behalf of the government of the United Kingdom of Great Britain and Northern Ireland (Incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2022, filed on November 9, 2022 (File No. 000-26770))

10.49^						Advance d Purchase Agreement, effective as of December 31, 2020, between the Company and the Commonwealth of Australia as represented by the Department of Health (Incorporated by reference to Exhibit 10.36 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, filed on March 1, 2021 (File No. 000-26770))

10.50^						Amendment to Advance d Purchase Agreement between the Company, and the Commonwealth of Australia as represented by the Department of Health, dated as of December 23, 2021 (Incorporated by reference to Exhibit 10.47 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, filed on March 1, 2022 (File No. 000-26770))

10.51^						Advance d Purchase Agreement, effective as of January 19, 2021, between the Company and Her Majesty the Queen in Right of Canada, as represented by the Minister of Public Works and Government Services (Incorporated by reference to Exhibit 10.37 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, filed on March 1, 2021 (File No. 000-26770)

10.52^						Advance Purchase Agreement, dated August 16, 2021, between the Company, Novavax CZ and the European Commission (Incorporated by reference to Exhibit 10.8 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, filed on November 5, 2021 (File No. 000-26770))

10.53^						Base Agreement between the Company and Advanced Technology International, dated June 25, 2020 (Incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2020 (File No. 000-26770))

10.54^						Modification No. 01 to Base Agreement between the Company and Advanced Technology International, dated as of March 23, 2022 (Incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2022, filed on May 9, 2022 (File No. 000-26770))

10.55^						Modification No. 02 to Base Agreement between the Company and Advanced Technology International, dated as of August 2, 2022 (Incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2022, filed on November 9, 2022 (File No. 000-26770))

10.56^*						Modification No. 03 to Base Agreement between the Company and Advanced Technology International, dated as of November 30, 2022

10.57^						Undefinitized Project Agreement No. 1 between the Company and Advanced Technology International, dated July 6, 2020 (Incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2020 (File No. 000-26770))

10.58^						Modification No. 01 to Undefinitized Project Agreement No. 1 between the Company and Advanced Technology International, dated July 9, 2020 (Incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2020 (File No. 000-26770))

10.59^						Modification No. 02 to Undefinitized Project Agreement No. 01, entered into September 10, 2020, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.41 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, filed on March 1, 2021 (File No. 000-26770))

10.60^						Modification No. 03 to Undefinitized Project Agreement No. 01, entered into September 18, 2020, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.42 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, filed on March 1, 2021 (File No. 000-26770))


10.61^						Modification No. 04 to Undefinitized Project Agreement No. 01, entered into December 23, 2020, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.43 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, filed on March 1, 2021 (File No. 000-26770))

10.62^						Modification No. 05 to Undefinitized Project Agreement No. 01, dated January 12, 2021, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.44 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, filed on March 1, 2021 (File No. 000-26770))

10.63^						Modification No. 06 to Undefinitized Project Agreement No. 01, entered into January 19, 2021, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.45 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, filed on March 1, 2021 (File No. 000-26770))

10.64^						Modification No. 07 to Undefinitized Project Agreement No. 01, dated April 23, 2021, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.6 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2021, filed on August 5, 2021 (File No. 000-26770))

10.65^						Modification No. 08 to Undefinitized Project Agreement No. 01, dated June 4, 2021, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.7 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2021, filed on August 5, 2021 (File No. 000-26770))

10.66^						Modification No. 09 to Undefinitized Project Agreement No. 01, dated July 16, 2021, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.5 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, filed on November 5, 2021 (File No. 000-26770))

10.67^						Modification No. 10 to Undefinitized Project Agreement No. 01, dated August 6, 2021, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.6 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, filed on November 5, 2021 (File No. 000-26770))

10.68^						Modification No. 11 to Undefinitized Project Agreement No. 01, dated August 26, 2021, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.7 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, filed on November 5, 2021 (File No. 000-26770))

10.69^						Modification No. 12 to Undefinitized Project Agreement No. 01, dated December 20, 2021, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.64 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, filed on March 1, 2022 (File No. 000-26770))

10.70^						Modification No. 13 to Undefinitized Project Agreement No. 01, dated February 1, 2022, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.65 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, filed on March 1, 2022 (File No. 000-26770))

10.71^						Modification No. 14 to Undefinitized Project Agreement No. 01, dated July 1, 2022, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.4 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2022, filed on November 9, 2022 (File No. 000-26770))

10.72^						Modification No. 15 to Undefinitized Project Agreement No. 01, dated August 9, 2022, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.5 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2022, filed on November 9, 2022 (File No. 000-26770))

10.73^						Modification No. 16 to Undefinitized Project Agreement No. 01, dated September 9, 2022, between the Company and Advanced Technology International (Incorporated by reference to Exhibit 10.6 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2022, filed on November 9, 2022 (File No. 000-26770))


10.74^						Amendment of Solicitation/Modification of Contract, Modification No. 6 , dated as of July 29, 2022, between the Company and the U.S. Department of Defense Joint Program Executive Office for Chemical, Biological, Radiological and Nuclear Defense (Incorporated by reference to Exhibit 10.7 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2022, filed on November 9, 2022 (File No. 000-26770))

10.75						Series A Convertible Preferred Subscription Agreement, dated June 15, 2020, between the Company and RA Capital Healthcare Fund, L.P. (Incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed June 19, 2020 (File No. 000-26770))

10.76						Restated Funding Agreement, entered into on May 11, 2020, between the Company and the Coalition for Epidemic Preparedness Innovations (Incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2020 (File No. 000-26770))

10.77^						Amendment Number 1 to the iPDP and Budget of the Outbreak Response Funding Agreement (Step 2), entered into on November 2, 2020, between the Company and the Coalition for Epidemic Preparedness Innovations (Incorporated by reference to Exhibit 10.56 to the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, filed on March 1, 2021 (File No. 000-26770))

10.78^						Settlement Agreement, dated September 30, 2022, between the Company and FUJIFILM Diosynth Biotechnologies UK Limited, FUJIFILM Diosynth Biotechnologies Texas, LLC, and FUJIFILM Diosynth Biotechnologies USA, Inc. (Incorporated by reference to Exhibit 10.8 to the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2022, filed on November 9, 2022 (File No. 000-26770))

14						Code of Conduct (Incorporated by reference to Exhibit 14 to the Company ’s Annual Report on Form 10-K for the year ended December 31, 2021, filed on M arch 1, 2022 (File No. 000-26770))

21*						Subsidiaries of the Company

23.1*						Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm

31.1*						Certification of Chief Executive Officer pursuant to Rule 13a-14(a) or 15d-14(e) of the Securities Exchange Act

31.2*						Certification of Chief Financial Officer pursuant to Rule 13a-14(a) or 15d-14(e) of the Securities Exchange Act

32.1*						Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

32.2*						Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

101						The following financial information from our Annual Report on Form 10-K for the year ended December 31, 2022, formatted in Extensible Business Reporting Language (XBRL): (i) the Consolidated Balance Sheets as of December 31, 2022 and 2021, (ii) the Consolidated Statements of Operations for the three years in the period ended December 31, 2022, (iii) the Consolidated Statements of Comprehensive Loss for the three years in the period ended December 31, 2022, (iv) the Consolidated Statements of Changes in Stockholders’ Equity (Deficit) for the three years in the period ended December 31, 2022, (v) the Consolidated Statements of Cash Flows for the three years in the period ended December 31, 2022, and (vi) the Notes to Consolidated Financial Statements.

104						Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).


	Percentage of Revenue for Year Ended December 31,						Percentage of Accounts Receivable as of December 31,
	2022		2021		2020		2022		2021
European Commission	40	%	*		*		10	%	*
Government of Australia	21	%	*		*		*		*
Government of Canada	10	%	*		*		*		*
Government of Israel	*		*		*		21	%	*
Gavi, the Vaccine Alliance	*		*		*		*		77	%
U.S. government(1)	19	%	71	%	46	%	46	%	*
CEPI	*		12	%	47	%	*		*
SK bioscience, Co., Ltd.	*		14	%	*		*		*


			Useful Life
Buildings			25 years
Machinery and equipment			5 - 7 years
Computer hardware			3 years
Leasehold improvements			Shorter of useful life or remaining term of the lease


	Balance, Beginning of Period		Additions		Deductions		Balance, End of Period
Accounts receivable:
Year ended December 31, 2022	$	454,993	$	1,768,457	$	(2,127,240)	$	96,210
Year ended December 31, 2021	262,012		2,432,268		(2,239,287)		454,993
Allowance for doubtful accounts:
Year ended December 31, 2022	—		(13,835)(1)		—		(13,835)
Year ended December 31, 2021	—		—		—		—
Deferred revenue(2):
Year ended December 31, 2022	1,595,472		46,908		(1,092,829)(3)		549,551
Year ended December 31, 2021	273,228		1,598,152		(275,908)		1,595,472


	Year Ended December 31, 2022
North America	$	194,480
Europe	823,542
Rest of the world	536,939
Total product revenue	$	1,554,961


	Fair Value at December 31, 2022						Fair Value at December 31, 2021
	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Assets
Money market funds (1)	$	398,834	$	—	$	—	$	361,822	$	—	$	—
Government-backed securities (1)	—		296,000		—		—		266,250		—
Corporate debt securities (1)	—		—		—		—		790,672		—
Agency securities(1)	—		104,536		—		—		—		—
Total cash equivalents	$	398,834	$	400,536	$	—	$	361,822	$	1,056,922	$	—
Liabilities
3.75% Convertible notes due 2023	$	—	$	322,111	$	—	$	—	$	447,509	$	—
5.00% Convertible notes due 2027	—		172,789		—		—		—		—
Total convertible notes payable	$	—	$	494,900	$	—	$	—	$	447,509	$	—


	Year Ended December 31, 2022
Balance at January 1, 2022	$	—
Charged to Cost of sales, including impairments	447,597
Other additions	—
Deductions	(79,214)
Balance at December 31, 2022	$	368,383


	May 27, 2020
Prepaid expense and other current assets	$	326
Property and equipment	96,739
Goodwill	70,662
Accounts payable	(1,193)
Accrued expenses	(205)
Other non-current liabilities	(813)
Purchase price, net of cash acquired	$	165,516


	Year Ended December 31, 2020
Revenue	$	475,598
Net loss	(419,896)
Basic and diluted net loss per share	$	(7.04)


		December 31,
Lease Assets and Liabilities	Classification	2022		2021
Assets:
ROU assets, operating, net	Right of use asset, net	$	36,384	$	40,123
ROU assets, finance, net	Right of use asset, net	69,857		—
Total non-current ROU assets		$	106,241	$	40,123

Liabilities:
Current portion of operating lease liabilities	Other current liabilities	$	16,867	$	30,983
Current portion of finance lease liabilities	Current portion of finance lease liabilities	27,196		130,533
Total current lease liabilities		$	44,063	$	161,516

Non-current portion of operating lease liabilities	Other non-current liabilities	$	50,085	$	39,116
Non-current portion of finance lease liabilities	Non-current finance lease liabilities	31,238		—
Total non-current lease liabilities		$	81,323	$	39,116

Weighted-average remaining lease term (years):
Operating leases		4.6		5.0
Finance leases		8.3		3.7

Weighted-average discount rate:
Operating leases		6.4%		6.0%
Finance leases		5.4%		5.2%


Year	Amount
2023	$	47,335
2024	24,589
2025	10,446
2026	10,509
2027	10,250
Thereafter	46,562
Total minimum lease payments	149,691
Less: imputed interest	(24,305)
Total lease liabilities	$	125,386


	2015 Plan			2005 Plan
	Stock Options	Weighted- Average Exercise Price		Stock Options	Weighted- Average Exercise Price
Outstanding at January 1, 2022	3,635,837	$	42.60	68,225	$	109.52
Granted	633,626	$	65.32	—	$	—
Exercised	(134,222)	$	15.64	(3,000)	$	31.10
Canceled	(81,951)	$	90.83	(1,500)	$	121.00
Outstanding at December 31, 2022	4,053,290	$	46.07	63,725	$	112.94
Shares exercisable at December 31, 2022	2,892,161	$	39.58	63,725	$	112.94


	Number of Shares	Per Share Weighted- Average Fair Value
Outstanding and unvested at January 1, 2022	819,828	$	116.70
Restricted stock units granted	1,882,987	$	48.51
Restricted stock units vested	(505,009)	$	89.77
Restricted stock units forfeited	(163,232)	$	99.58
Outstanding and unvested at December 31, 2022	2,034,574	$	61.65


	NOVAVAX, INC.
[SEAL]

	By:	/s/ John A. Herrmann III
		John A. Herrmann III
		Executive Vice President & Chief Legal Officer

	EXECUTIVE:
	/s/ John C. Jacobs
	John C. Jacobs

Cover Page - USD ($)	12 Months Ended
Cover Page - USD ($)	Dec. 31, 2022	Feb. 21, 2023	Jun. 30, 2022
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	000-26770
Entity Registrant Name	NOVAVAX, INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	22-2816046
Entity Address, Address Line One	21 Firstfield Road,
Entity Address, City or Town	Gaithersburg,
Entity Address, State or Province	MD
Entity Address, Postal Zip Code	20878
City Area Code	(240)
Local Phone Number	268-2000
Title of 12(b) Security	Common Stock, Par Value $0.01 per share
Trading Symbol	NVAX
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 4,010,000,000
Entity Common Stock, Shares Outstanding		86,173,245
Documents Incorporated by Reference	Documents incorporated by reference: Portions of the Registrant’s Definitive Proxy Statement to be filed no later than 120 days after the fiscal year ended December 31, 2022 in connection with the Registrant’s 2023 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent indicated herein.
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Entity Central Index Key	0001000694