NOVAVAX INC

Item 1. BUSINESS

Overview

Novavax, Inc., together with our wholly owned subsidiaries, is tackling global health challenges through scientific innovation that seeks to maximize our deep scientific expertise in vaccines and our cutting-edge technology platform. The differentiated platform features our recombinant protein-based nanoparticle technology and unique Matrix-M™ adjuvant.

Our corporate growth strategy is focused on delivering value through in-house early-stage research and development (“R&D”) to build a pipeline of high-value assets using our proven technology along with seeking to enter into partnerships to drive value creation for our R&D assets early in the development process and for our Matrix-M™ adjuvant alone. Our three strategic priorities are: focusing on our partnership with Sanofi announced in May 2024, leveraging our technology platform

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and pipeline to forge additional partnerships, and advancing our proven technology platform and early-stage pipeline. Our corporate growth strategy is supported by a lean and focused operating model.

Our technology platform, combined with our deep vaccine expertise, is the fuel for innovation and partnerships, and we believe it has the potential to create significant value. Our proprietary Matrix-M™ adjuvant when added to vaccines, has been shown to help induce a stronger and longer-lasting immune response. Our recombinant protein-based nanoparticle technology has been shown to be highly immunogenetic. Together, we believe that our technology platform can induce potent, durable and broad immune responses, with the potential to be antigen-sparing. Our Matrix-M™ adjuvant can increase both antibody and cell-mediated immune responses to the vaccine and it has demonstrated a favorable tolerability profile in clinical trials. Our technology platform is used in our authorized COVID-19 vaccine and the R21/Matrix-M™ adjuvant malaria vaccine (as defined below).

We have developed and manufactured our updated COVID-19 vaccine for the 2024-2025 vaccination season for use in individuals aged 12 and older. Our updated COVID-19 vaccine received Emergency Use Authorization (“EUA”) from the U.S. Food and Drug Administration (“FDA”) in August 2024, along with several additional global regulatory authorizations for use in the 2024-2025 vaccination season. In the U.S., our Biologics License Application (“BLA”) for our prototype COVID-19 vaccine and for our XBB COVID-19 vaccine is currently under U.S. FDA review with a Prescription Drug User Fee Act (“PDUFA”) date of April 2025.

In May 2024, we entered into a Collaboration and License Agreement with Sanofi (the “Sanofi CLA”), to co-commercialize our COVID-19 vaccine, including future updated versions that address seasonal COVID-19 variants. Under the terms of the agreement, we will continue to commercialize our updated COVID-19 vaccine through the end of the 2024-2025 vaccination season, and beginning in 2025 and continuing during the term of the Sanofi CLA, we and Sanofi will commercialize the COVID-19 vaccine worldwide in accordance with a commercialization plan agreed by us and Sanofi, under which we will continue to supply certain of our existing advance purchase agreement (“APA”) customers and strategic partners, including Takeda Pharmaceutical Company Limited (“Takeda”) and Serum Institute of India Pvt. Ltd. (“SII”). Upon completion of the existing APAs, we and Sanofi will jointly agree on commercialization activities of each party in each jurisdiction. Additionally, Sanofi has the right to develop novel influenza-COVID-19 combination vaccines utilizing our COVID-19 vaccine and Sanofi’s seasonal influenza vaccine, combination products containing our COVID-19 vaccine and one or more non-influenza vaccines, and multiple new vaccines utilizing our Matrix-M™ adjuvant.

In December 2024, Sanofi announced that the U.S. Food and Drug Administration (“U.S.FDA”) granted Fast Track designation to two Sanofi combination vaccine candidates: the first combination consists of Fluzone High-Dose combined with our COVID-19 vaccine, and the second combination consists of Flublok with our COVID-19 vaccine. Sanofi is evaluating the safety and immunogenicity of both combination vaccine candidates in two separate Phase 1/2 trials.

We are eligible to receive royalties and milestones associated with the ongoing sales of our COVID-19 vaccine and Sanofi’s influenza-COVID-19 combination vaccines and any other combination vaccines Sanofi may develop, as well as ongoing product royalties for vaccines developed with our Matrix-M™ adjuvant. We discuss this agreement in further detail in Note 4 to our accompanying consolidated financial statements.

Additionally, we are advancing our pipeline of both late- and early-stage programs with a focus on potentially high-value assets in areas with unmet medical need, compelling scientific rationale and strong commercial opportunity.

Our late-stage programs include a COVID-19-Influenza (“CIC”) vaccine candidate, as well as a stand-alone influenza vaccine candidate. In December 2024, we initiated the initial cohort of a Phase 3 trial comparing our CIC vaccine and stand-alone influenza vaccine to our updated COVID-19 vaccine and a licensed seasonal influenza vaccine comparator in adults aged 65 and older. We intend to partner these vaccine candidates in order to advance to BLA filing and commercialization.

Furthermore, we provide our Matrix-M™ adjuvant for use in collaborations. These include the R21/Matrix-M™ adjuvant malaria vaccine, a malaria vaccine developed by our partner, the Jenner Institute, University of Oxford (“R21/Matrix-M™ adjuvant malaria vaccine”) and manufactured by SII. R21/Matrix-M™ adjuvant malaria vaccine is authorized in several countries. Additionally, we provide Matrix-M™ adjuvant for use in various programs in preclinical and clinical stage, as well as preclinical investigations. Examples include an agreement with the Gates Foundation, and in a related master transfer agreement with a leading pharmaceutical company for exploration of Matrix-M™ adjuvant used as a potential advancement in their pipeline.

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We continue to advance our strategic assessment of our emerging, early-stage pipeline. We intend to develop our early-stage pipeline using a disciplined and capital-efficient approach. Our R&D investment strategy seeks to place smart, lower-cost investments on the programs with the highest potential value, both within infectious disease and beyond, with the intent of partnering these assets at proof of concept and shifting late-stage development costs to our partners to finalize clinical development. We are pursuing early-stage research in diseases such as, respiratory syncytial virus (“RSV”) combinations, varicella-zoster virus (shingles) and Clostridioides difficile (C. Diff.) colitis. We are actively working to evaluate several RSV combination candidates to progress forward toward an Investigational New Drug (“IND”). We are actively developing an H5N1 avian pandemic influenza vaccine candidate and the toxicology study is underway. We are actively monitoring the emerging public health situation and are pursuing funding opportunities to join preparedness efforts. Additionally, we are evaluating potential expansion beyond infectious diseases including therapeutic areas such as oncology, where we believe our technology could augment and improve upon current therapies.

We were incorporated in 1987 under the laws of the State of Delaware. Our principal executive offices are located at 700 Quince Orchard Road, Gaithersburg, Maryland, 20878, and our telephone number is (240) 268-2000. Our common stock is listed on the Nasdaq Global Select Market under the symbol “NVAX.”

Technology Overview

We believe our recombinant nanoparticle vaccine technology and our proprietary Matrix-M™ adjuvant are well suited for the development and commercialization of vaccine candidates targeting areas both within and beyond the infectious disease space.

Recombinant Nanoparticle Vaccine Technology

Once a target of interest has been identified, the genetic sequence encoding an antigen is selected for developing the vaccine construct. The genetic sequence may be optimized to enhance protein stability or confer resistance to degradation. This genetic construct is inserted into the baculovirus Spodoptera frugiperda (“Sf-/BV”) insect cell-expression system, which enables efficient, large-scale expression of the optimized protein. The Sf-/BV system produces protein-based antigens that are properly folded and modified, which can be critical for functional, protective immunity. Our testing shows this results in a highly immunogenic nanoparticle that is ready to be formulated with Matrix-M™ adjuvant.

Matrix-M™ Adjuvant

Our proprietary Matrix-M™ adjuvant is a key differentiator within our platform. This adjuvant has enabled potent, well tolerated, and durable efficacy by stimulating the entry of antigen presenting cells (“APCs”) into the injection site and enhancing antigen presentation in local lymph nodes. This in turn activates APCs, T-cell and B-cell populations, and plasma cells, which promote the production of high affinity antibodies, an immune boosting response. This potent mechanism of action enables a lower dose of antigen to achieve the desired immune response, thereby contributing to increased vaccine supply and manufacturing capacity. These immune-boosting and dose-sparing capabilities contribute to the adjuvant’s highly unique profile.

We continue to evaluate commercial opportunities for the use of our Matrix-M™ adjuvant alongside vaccine antigens produced by other manufacturers. Matrix-M™ adjuvant is being evaluated in combination with several partner-led malaria vaccine candidates, including for R21/Matrix-M™ adjuvant malaria vaccine. The R21/Matrix-M™ adjuvant malaria vaccine has been licensed to SII for commercialization. In May 2024, pursuant to the Sanofi CLA, Sanofi received a non-exclusive license to develop and commercialize other vaccine products that include our Matrix-M™ adjuvant. In September 2024, we signed a Matrix-M™ adjuvant related agreement with a leading pharmaceutical company to enable exploration of our technology for the potential advancement of their pipeline candidates.

COVID-19 Vaccine Regulatory and Licensure

For our updated COVID-19 vaccine for the 2024-2025 vaccination season, in August 2024, we received EUA from the U.S. FDA for active immunization to prevent COVID-19 in individuals aged 12 and older. Our updated COVID-19 vaccine is included in the recommendations issued by the U.S. Centers for Disease Control and Prevention in June 2024. This follows the recommendation in April 2024, from the World Health Organization (“WHO”) for the recommended use of a monovalent JN.1 lineage COVID-19 vaccine.

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In the U.S., our updated COVID-19 vaccine for the 2024-2025 vaccination season is available in pre-filled syringe product presentation and available in independent pharmacies and major retailers.

In October 2024, the European Commission issued a decision approving our updated COVID-19 vaccine for use in individuals aged 12 and older for the prevention of COVID-19 in the EU. This decision followed the positive opinion from the Committee for Medicinal Products for Human Use of the European Medicines Agency (“EMA”).

Additionally, in October 2024, we received BLA approval by the Taiwan Food and Drug Administration for our COVID-19 vaccine for use in individuals aged 12 and older.

In November 2024, we received approval from the UK Medicines and Healthcare Products Regulatory Agency (“MHRA”) for our updated COVID-19 vaccine for use in individuals aged 12 and older.

In December 2024, we received approval from Singapore Health Sciences Authority for our updated COVID-19 vaccine for use in individuals aged 12 and older.

We are working to continue to expand our label for primary and re-vaccination in younger children, and to achieve supportive policy recommendations enabling broad market access and to support Sanofi’s commercial efforts, pursuant to our agreement, that have begun in 2025. We continue to work closely with governments, regulatory authorities, and non-governmental organizations in our commitment to facilitate access to our COVID-19 vaccine.

APAs

We have entered into APAs (also referred to as “supply agreements” throughout this Annual Report on Form 10-K) with various countries globally. The APAs 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. Such upfront payments generally become non-refundable upon our achievement of certain development milestones. We currently have $1.0 billion in committed APAs anticipated for future delivery under existing agreements, comprised of $225 million under our APA with the Vaccine Alliance (“Gavi”), $556 million under our APA with His Majesty the King in Right of Canada as represented by the Minister of Public Works and Government Services, as successor in interest to Her Majesty the Queen in Right of Canada, as represented by the Minister of Public Works and Government Services (the “Canadian government”), and $258 million under all other APAs.

We have an APA with the Commonwealth of Australia (“Australia”) for the purchase of doses of COVID-19 Vaccine (the “Australia APA”). In December 2024, we entered into an amendment to the Australia APA with Australia. Pursuant to the amendment, we acknowledged the cancellation by Australia of the delivery of certain doses of our COVID-19 Vaccine scheduled for delivery between the fourth quarter of 2023 and the fourth quarter of 2025 and we agreed to credit approximately $31 million of the advanced payment paid by Australia to us against outstanding invoices and invoices for the future delivery of approximately 3 million doses of COVID-19 Vaccine without requiring additional cash payments. We also agreed to an updated delivery schedule providing for the potential delivery of COVID-19 Vaccine or future variant COVID-19 Vaccine through the end of 2029. The amendment further provides for certain remedies for Australia, including return of unused credit, cancellation of doses, or termination of the Australia APA, in the event we miss or under deliver doses to Australia or fail to receive regulatory approval of a variant COVID-19 Vaccine. The amendment also provides Australia with the right to cancel doses if we fail to timely notify Australia of changes to our commercialization plans. As of December 31, 2024, $15.6 million was classified as current Deferred revenue and $118.2 million was classified as non-current Deferred revenue with respect to the Australia APA in our consolidated balance sheet, which will be recognized in product revenue as doses are delivered to Australia.

We have an APA with the Pharmaceutical Management Agency (“Pharmac”), a New Zealand Crown entity, for the purchase of doses of COVID-19 Vaccine (the “New Zealand APA”). In July 2024, Pharmac provided notice of its termination of the New Zealand APA. Pharmac has requested a refund of certain advanced payments, and we are in discussion with Pharmac regarding whether a refund of the advanced payments is appropriate under the New Zealand APA. As of December 31, 2024, $31.3 million was classified as Other current liabilities with respect to the New Zealand APA in our consolidated balance sheet. Approximately $125 million of the contract value related to future deliverables may no longer be available if the New Zealand APA is terminated. We responded to Pharmac in September 2024 indicating we do not believe

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Pharmac has the right to unilaterally terminate the contract or receive a refund of any part of the remaining upfront payment. We are in ongoing discussions with Pharmac to resolve this matter, which may not be achievable on acceptable terms or at all.

We have an APA with the Canadian government, for the purchase of doses of COVID-19 Vaccine (the “Canada APA”). The Canadian government may terminate the Canada APA, as amended, as we failed to receive regulatory approval for our COVID-19 Vaccine using bulk antigen produced at Biologics Manufacturing Centre Inc. (“BMC”) on or before December 31, 2024. Therefore, we are in discussions with Canada regarding a potential amendment to the Canada APA to address possible alternatives, which may not be achievable on acceptable terms or at all. As of December 31, 2024, $555.7 million was classified as current Deferred revenue with respect to the Canada APA in our consolidated balance sheet. If the Canadian government terminates the Canada APA, $28.0 million of advanced payments previously received would become refundable, which was classified as Other current liabilities in our consolidated balance sheet, and approximately $224 million of the contract value related to future deliverables would no longer be available.

In November 2024, we and 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”) entered into a Termination and Settlement Agreement (the “Settlement Agreement”) and a Letter of Amendment to the Settlement Agreement (the “Settlement Agreement Amendment”), relating to the Amended and Restated SARS-CoV-2 Vaccine Supply Agreement (the “Amended and Restated UK Supply Agreement”) and the SARS-CoV-2 Vaccine Supply Agreement, dated October 22, 2020 (the “Original UK Supply Agreement”) by and between us and the Authority. The Settlement Agreement resolved the disputes regarding the Amended and Restated Supply Agreement and released both parties of all claims arising out of or connected with the Amended and Restated Supply Agreement.

Under the terms of the Settlement Agreement and Settlement Agreement Amendment, we and the Authority agreed to terminate the Amended and Restated Supply Agreement and to fully settle the outstanding amount under dispute related to upfront payments of $112.5 million previously received by us from the Authority under the Amended and Restated Supply Agreement. Pursuant to the Settlement Agreement, we agreed to pay a refund of $123.8 million (the “Settlement Payment”) to the Authority in equal quarterly installments of $10.3 million over a three year period, ending in June 2027. The Settlement Payment amount includes an $11.3 million provision for interest over the period and may be avoided if we choose to accelerate payments. As of December 31, 2024, the remaining upfront payment previously received from the authority is classified as $36.4 million of other current liabilities and $58.8 million of Other non-current liabilities on our consolidated balance sheet.

We entered into an APA with Gavi in May 2021 (the “Gavi APA”), pursuant to which we received upfront payments of $700 million from Gavi (the “Advance Payment Amount”) to be applied against purchases of our prototype COVID-19 vaccine by certain countries participating in the COVAX Facility. As of December 31, 2023, the remaining Gavi Advance Payment Amount was $696.4 million. In February 2024, we and Gavi entered into a Termination and Settlement Agreement (the “Gavi Settlement Agreement”) terminating the Gavi APA, settling the arbitration proceedings, and releasing both parties of all claims arising from, under, or otherwise in connection with the Gavi APA. Pursuant to the Gavi Settlement Agreement, we are responsible for payment to Gavi of (i) an initial settlement payment of $75 million, which we paid in February 2024, and (ii) deferred payments, in equal annual amounts of $80 million payable each calendar year through a deferred payment term ending December 31, 2028. The deferred payments are due in variable quarterly installments beginning in the second quarter of 2024 and total $400 million during the deferred payment term. Such deferred payments may be reduced through Gavi’s use of an annual vaccine credit equivalent to the unpaid balance of such deferred payments each year, which may be applied to qualifying sales of any of our vaccines funded by Gavi for supply to certain low-income and lower-middle income countries. We have the right to price the vaccines offered to such low-income and lower-middle income countries in our discretion, and, when utilized by Gavi, we will credit the actual price per vaccine paid against the applicable credit. We intend to price vaccines offered via the tender process, consistent with our shared goal with Gavi to provide equitable access to those countries. Also, pursuant to the Gavi Settlement Agreement, we granted Gavi an additional credit of up to $225 million that may be applied against qualifying sales of any of our vaccines for supply to such low-income and lower-middle income countries that exceed the $80 million deferred payment amount in any calendar year during the deferred payment term. In total, the Gavi settlement agreement is comprised of $700 million of potential consideration, consisting of the $75 million initial settlement payment, deferred payments of up to $400 million that may be reduced through annual vaccine credits, and the additional credit of up to $225 million that may be applied for certain qualifying sales.

We recorded the $3.6 million difference between the refund liability recorded as of December 31, 2023 of $696.4 million and the $700 million of total consideration under the arrangement as a revenue adjustment during the year ended December 31, 2024. As of December 31, 2024, the remaining amounts included on our consolidated balance sheet are classified as $225.0 million in non-current Deferred revenue for the additional credit that may be applied against future qualifying sales,

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$85.0 million in Other current liabilities, and $275.0 million in Other non-current liabilities. In addition, we and Gavi entered into a security agreement pursuant to which we granted Gavi a security interest in accounts receivable from SII under the SII R21 Agreement (see Note 3 to our accompanying consolidated financial statements), which will continue for the deferred payment term of the Gavi Settlement Agreement. On February 22, 2024, the claims and counterclaims were dismissed with prejudice.

Product Pipeline

We are advancing our pipeline of late- and early-stage programs with a focus on potentially high-value assets in areas with unmet medical need, compelling scientific rationale and strong commercial opportunity. Development and advancement of our in-house pipeline leverages our core expertise and our experience in respiratory and infectious diseases and vaccines, and we intend to explore new opportunities with the potential to expand beyond infectious diseases. Our partnered pipeline includes our COVID-19 vaccine and our Matrix-M™ adjuvant used in collaboration for development of new and existing vaccines.

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Pipeline Overview

Our pipeline encompasses vaccine candidates for infectious diseases. Our COVID-19 vaccine, partnered with Sanofi, is our most advanced product. We will continue to commercialize our updated COVID-19 vaccine through the end of the 2024-2025 vaccination season, and beginning in 2025 and continuing during the term of the Sanofi CLA, we and Sanofi will commercialize our COVID-19 vaccine worldwide in accordance with a commercialization plan agreed by us and Sanofi. Our COVID-19 vaccine has received authorizations from the U.S. FDA, the European Commission (“EC”), the WHO and several other countries for both adult and adolescent populations. We advanced our COVID-19 vaccine to a post-authorization Phase 3 safety and immunogenicity trial. Beyond our COVID-19 vaccine, our late-stage pipeline includes a CIC vaccine candidate, and our stand-alone influenza vaccine candidate.

Additionally, we intend to develop our early-stage pipeline using a disciplined and capital-efficient approach. Our R&D investment strategy seeks to place smart, lower-cost investments on the programs with the highest potential value, both within infectious disease and beyond, with the intent of partnering these assets at proof of concept and shifting late-stage development costs to our partners to finalize clinical development. We are actively developing an H5N1 avian pandemic influenza vaccine candidate. We are conducting early-stage research in diseases such as, RSV combinations, varicella-zoster virus (shingles) and Clostridium difficile (C. Diff.) colitis. Lastly, we are evaluating potential expansion beyond infectious diseases, including therapeutic areas such as oncology, where we believe our technology has the potential to augment and improve upon current therapies.

In addition to our own pipeline, we have several partnership opportunities. For example, our Matrix-M™ adjuvant is being used for collaboration in R21/Matrix-M™ adjuvant malaria vaccine. We believe our partner-led R21/Matrix™ adjuvant malaria vaccine presents significant potential. Based on preliminary results from an ongoing Phase 3 trial in infants and toddlers in Africa, showing 72-79% efficacy, the R21/Matrix™ adjuvant malaria vaccine has been authorized in Ghana, Nigeria, and Burkina Faso, and in December 2023, was granted prequalification by the WHO.

Under our agreement, we have also provided a sole license to Sanofi for the independent development of a COVID-19 and influenza combination product using our COVID-19 vaccine in combination with two of Sanofi’s separately marketed influenza vaccines, Fluzone High-Dose and Flublok to evaluate immunogenicity and safety in Phase 1/2 combination vaccine trials. These two combination vaccine candidates were granted Fast Track designation by the U.S. FDA in December 2024 to prevent influenza and COVID-19 infections in individuals aged 50 and older. Sanofi also has a non-exclusive license to develop and commercialize combination products containing both our COVID-19 vaccine and one or more non-influenza vaccines, and

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a non-exclusive license to develop and commercialize other vaccine products selected by Sanofi that include our Matrix-M™ adjuvant.

Coronavirus Vaccine Clinical Development

We continue efforts to expand our COVID-19 vaccine label within the adolescent and pediatric indications. Additionally, we continue to evaluate vaccine safety, immunogenicity, and effectiveness through ongoing clinical trials and collaborative evidence-generating real-world studies.

Phase 3 Strain-Change and Re-vaccination Studies

In October 2024, we initiated and fully enrolled Study 315 to evaluate safety and immunogenicity of a single dose of the JN.1 subvariant vaccine NVX-CoV2705 in previously vaccinated adults. Topline data is expected in the first quarter of 2025 and is expected to support regulatory submissions in the U.S. and other jurisdictions for this and future variant strain formulations.

In July 2024, we locked the database for 338 participants aged 18 and older in Part 2 of the Study 313, which will evaluate the immunogenicity of a single dose of the XBB.1.5 subvariant vaccine NVX-CoV2601 in previously unvaccinated individuals. Data from Study 313 are intended to support BLA supplements and similar regulatory submissions in other territories for future variant strain formulations.

Phase 2b/3 Pediatric Hummingbird™ Study

In December 2024, we achieved the $50 million milestone under our agreement with Sanofi, associated with the database lock for one of the three cohorts in this study.

In August 2023, we announced topline results from our Phase 2b/3 Hummingbird™ trial that met its primary endpoints in children aged 6 through 11 years demonstrating both tolerability and immunologic responses. This ongoing trial is evaluating the safety, effectiveness (immunogenicity), and efficacy of two doses of our prototype COVID-19 vaccine (NVX-CoV2373), followed by a booster 6 months after the primary vaccination series. The trial completed enrollment in September 2023 and includes three age de-escalation cohorts of 1,200 children each. In previous consultations with the U.S. FDA, the filing strategy included filing a supplemental BLA for children in these age cohorts once the initial BLA is approved. We are in discussion with the U.S. FDA regarding additional immunogenicity studies that will be needed to support a supplemental BLA to expand the pediatric indication in light of the progressive increase in the number of children with baseline COVID-19 natural immunity during the Phase 2b/3 Hummingbird™ trial enrollment period, which began in August 2022.

COVID-Influenza Combination and Stand-alone Influenza Program

Phase 3 Clinical Trial of CIC and Stand-alone Influenza Vaccine Candidates

In December 2024, we initiated a Phase 3 trial for our CIC and stand-alone influenza vaccine candidates to evaluate the immunogenicity and safety compared to our updated COVID-19 vaccine and a licensed seasonal influenza vaccine comparator in adults aged 65 and older. Our Phase 3 trial has been initiated with an initial cohort of approximately 2,000 participants. We are working with the U.S. FDA to assess the potential feasibility of the accelerated approval pathway for our CIC vaccine candidate. We are not seeking an accelerated approval for our stand-alone influenza vaccine candidate. We do not intend to launch these vaccine candidates without a partner and we therefore will not be making any additional investments in this program until a partner is in place. In October 2024, the U.S. FDA placed a clinical hold on the IND from a spontaneous report of a serious adverse event in a participant who received the CIC vaccine candidate in a Phase 2 trial that completed in 2023. After providing the U.S. FDA with the requested additional information on this event, the event term was updated from motor neuropathy to amyotrophic lateral sclerosis, a condition that is not known to be immune-mediated or associated with vaccination, which in this event was assessed as not related to vaccination. The information provided to the FDA supported our assessment that the serious adverse event was not related to our CIC vaccine candidate and the U.S. FDA lifted the clinical hold on the IND in November 2024.

The Phase 3 trial builds on Phase 2 data that was previously shared in May 2023, where the vaccine candidates showed preliminary robust immune responses, reassuring safety profiles, and reactogenicity that was comparable to the licensed influenza vaccine comparator arms. The Phase 2 dose-confirming randomized, observer-blinded trial evaluated the safety and

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effectiveness (immunogenicity) of different formulations of the CIC and influenza vaccine candidates, and higher doses of Novavax's COVID-19 vaccine in 1,575 adults aged 50 through 80 years. The CIC vaccine candidate achieved both anti-SARS-CoV-2 immunoglobulin G (IgG) and neutralizing levels comparable to our prototype COVID-19 vaccine. In addition, several of the combination formulations achieved responses to both SARS-CoV-2 and to the four homologous influenza strains that were comparable to the reference comparators, supporting their prioritization for advanced development.

We continue to invest in development of our pipeline that uses our recombinant nanoparticle technology platform and Matrix-M™ adjuvant. We continue to believe these assets are key value drivers and intend to partner these assets towards a BLA filing.

Malaria

Malaria is a life-threatening disease caused by a parasite that infects mosquitos and is subsequently transmitted to humans. According to the 2024 WHO World Malaria Report, in 2023, there were an estimated 263 million malaria cases and 597,000 malaria-related deaths worldwide. We believe malaria has the potential to be preventable through our partner-led R21/Matrix-M™ adjuvant malaria vaccine, which in 2024 the first doses were distributed and administered across the African region after in 2023 having received authorization in several countries and prequalification by the WHO.

R21/Matrix-M™ Adjuvant Malaria Vaccine

R21/Matrix-M™ adjuvant malaria vaccine, formulated with our Matrix-M™ adjuvant is developed by our partner, the Jenner Institute, University of Oxford, and manufactured by SII. We have an agreement with SII related to its manufacture of R21/Matrix-M™ adjuvant malaria vaccine under which SII purchases our Matrix-M™ adjuvant for use in development activities at cost and for commercial purposes at a tiered commercial supply price, and pays a royalty in the single- to low-double digit range based on vaccine sales for a period of 15 years after the first commercial sale of the vaccine in each country.

In July 2024, first commercial doses of R21/Matrix-M™ adjuvant malaria vaccine have been administered to children in Cote d’Ivoire and South Sudan. As part of the WHO malaria program, at their discretion, the vaccine is expected to be included in countries such as Central African Republic, Chad, Democratic Republic of Congo, Mozambique, Nigeria and Uganda.

Phase 3 Clinical Trial of R21/Matrix-M™ Adjuvant Malaria Vaccine

R21/Matrix-M™ adjuvant malaria vaccine is being evaluated in an ongoing Phase 3 trial conducted by our partner, the Jenner Institute, University of Oxford. In February 2024, peer-reviewed results from the Phase 3 efficacy trial were published in The Lancet reporting R21/Matrix-M™ adjuvant malaria vaccine has a well-tolerated safety profile and offers high-level efficacy against clinical malaria in African children at sites of both seasonal and perennial transmission. This Phase 3 trial enrolled 4,800 children aged 5 to 36 months across five sites in four African countries with differing malaria transmission intensities and seasonality. The trial demonstrated efficacy of 75% when administered prior to the high transmission season during the 12 months following a three-dose series and efficacy of 68% when administered in an age-based schedule in regions where malaria is present perennially during the 12 months following the first three doses. This R21/Matrix-M™ adjuvant malaria vaccine is a low-cost vaccine and has the potential to make a substantial contribution to reducing the burden of malaria disease and deaths in sub-Saharan Africa.

R21/Matrix-M™ Adjuvant Malaria Vaccine Regulatory and Licensure

In December 2023, the WHO announced it prequalified the R21/Matrix-M™ adjuvant malaria vaccine to prevent malaria disease in children caused by the P. falciparum parasite in endemic areas. Prequalification status enables United Nations agencies to procure the vaccine for eligible countries and enabled rollout of the vaccine in mid-2024. The WHO recommended that the R21/Matrix-M™ adjuvant malaria vaccine be administered in a four-dose schedule beginning at five months of age.

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License and Collaboration

A summary of our license and collaboration agreements follows:

Serum

We previously granted SII exclusive and non-exclusive licenses for the development, co-formulation, filling and finishing, registration, and commercialization of our COVID-19 vaccine and our CIC vaccine candidate. SII agreed to purchase our Matrix-M™ adjuvant and we granted SII a non-exclusive license to manufacture the antigen drug substance component of our COVID-19 Vaccine in SII’s licensed territory solely for use in the manufacture of COVID-19 Vaccine. We and SII equally split the revenue from SII’s sale of COVID-19 Vaccine in its licensed territory, net of agreed costs. In May 2024, we and Serum Life Sciences Limited, a subsidiary of SII ("SLS”), entered into a supply agreement (the “SLS Supply Agreement”) under which SLS agreed to supply us with antigen drug substance and finished COVID-19 Vaccine doses. The SLS Supply Agreement includes the general terms and conditions of supply orders between us and SLS. We and SLS execute firm purchase orders, which include specific quantities to be delivered under the SLS Supply Agreement. We agreed to supply SLS with all Matrix-M™ adjuvant needed to manufacture finished COVID-19 Vaccine doses. In March 2020, we entered into an agreement with SLS that granted SII a non-exclusive license for the use of Matrix-M™ adjuvant supplied by us to develop, manufacture, and commercialize R21/Matrix-M™ adjuvant malaria vaccine (the "SII R21 Agreement"). In December 2023, R21/Matrix-M™ adjuvant malaria vaccine received prequalification by the WHO. Under the SII R21 Agreement, SII purchases our Matrix-M™ adjuvant for use in development activities at cost and for commercial purposes at a tiered commercial supply price, and pays a royalty in the single-to low- double-digit range based on vaccine sales for a period of 15 years after the first commercial sale of the vaccine in each country.

Takeda

We have a collaboration and license agreement with Takeda Pharmaceutical Company Limited (“Takeda”) under which we granted Takeda an exclusive license to develop, manufacture, and commercialize our COVID-19 Vaccine in Japan. Under the agreement, Takeda purchases Matrix-M™ adjuvant from us to manufacture doses of COVID-19 Vaccine, and we are entitled to receive milestone and sales-based royalty 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 COVID-19 Vaccine.

Sanofi

In May 2024, we entered into the Sanofi CLA under which we granted and Sanofi received the following:

i) A co-exclusive license to commercialize our current stand-alone COVID-19 Vaccine, including our prototype COVID-19 vaccine and updated COVID-19 vaccines, that address seasonal variants throughout the world (the “COVID-19 Vaccine Products”);

ii) A sole license to develop and commercialize combination products containing a potential combination of our COVID-19 Vaccine and Sanofi’s seasonal influenza vaccine (“COVID-19 and influenza Combination Products” or “CIC Products”);

iii) A non-exclusive license to develop and commercialize combination products containing both our COVID-19 Vaccine and one or more non-influenza vaccines (“Other Combination Products” and together with the COVID-19 Vaccine Products, CIC Products, and Other Combination Products, “Licensed COVID-19 Products”); and

iv) A non-exclusive license to develop and commercialize other vaccine products selected by Sanofi that include our Matrix-M™ adjuvant (as described below, the “Adjuvant Products”).

We are also responsible for performing services related to the technology transfer of our manufacturing process for the COVID-19 Vaccine Products and Matrix-M™ components to Sanofi. Until the successful completion of such transfer, we will supply Sanofi with both COVID-19 Vaccine Products and Matrix-M™ intermediary components for Sanofi’s use and we are eligible for reimbursement of such costs from Sanofi. In addition, we are responsible for certain research and development and medical affairs services related to the COVID-19 Vaccine.

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Under the Sanofi CLA, we will continue to commercialize our updated COVID-19 vaccine through the end of the 2024-2025 vaccination season. Beginning in 2025 and continuing during the term of the Sanofi CLA, Sanofi and we will commercialize the COVID-19 Vaccine Products worldwide in accordance with a commercialization plan agreed by us and Sanofi, under which we will continue to supply our existing APA customers and strategic partners, including Takeda and SII. Upon completion of the existing APAs, we and Sanofi will jointly agree on commercialization activities of each party in each jurisdiction.

Pursuant to the Sanofi CLA, we received a non-refundable upfront payment of $500 million in the second quarter of 2024. In addition, we are eligible to receive development, technology transfer, launch, and sales milestone payments totaling up to $700 million in the aggregate with respect to the COVID-19 Vaccine Products and royalty payments on Sanofi’s sales of such licensed products. Milestone payments are comprised of a payment of $175 million upon the approval of the marketing authorization for a COVID-19 Vaccine Product in a pre-filled syringe from the U.S. FDA, $25 million upon the transfer of such approval to Sanofi, $25 million upon the transfer of EMA approval of a COVID-19 Vaccine Product in a pre-filled syringe to Sanofi, $50 million upon database lock of an existing Phase 2/3 clinical trial (identifier 2019nCoV-503), $75 million upon the completion of the technology transfer of our manufacturing process for the COVID-19 Vaccine Products to Sanofi, $125 million upon achievement of certain CIC Product-related development milestones, and $225 million in CIC Product-related launch milestones. We achieved the $50 million milestone for database lock of an existing Phase 2/3 clinical trial in 2024 and the amount is included in accounts receivable on our consolidated balance sheet.

We are also eligible to receive development, launch, and sales milestone payments of up to $200 million for each of the first four Adjuvant Products and $210 million for each Adjuvant Product thereafter, and royalty payments on Sanofi’s sales of all such licensed products. In addition, a portion of the technology transfer costs and research and development costs incurred by us will be reimbursed by Sanofi in accordance with agreed upon plans and budgets.

Manufacturing and Supply

We are committed to discovering, developing, and commercializing innovative vaccines to prevent serious infectious diseases directly and by leveraging our strategic global partnerships. In 2024, we modified and continued to assess our manufacturing needs and our global manufacturing footprint consistent with our contractual obligations to supply, and anticipated demand for COVID-19 Vaccine and Matrix-M™ adjuvant, and expected supply needs of Sanofi for both COVID-19 Vaccine Products and Matrix-M™ intermediary components for use under the Sanofi CLA.

A summary of our key manufacturing and supply arrangements follows:

Matrix-MTM Adjuvant

We manufacture our proprietary saponin-based Matrix-M™ adjuvant at our Novavax AB facility in Uppsala, Sweden. We also have contract manufacturing arrangements with AGC Biologics and the Polypeptide Group to provide contract development and manufacturing services, supplying us with large-scale production of Matrix-M™ adjuvant.

Antigen Component of COVID-19 Vaccine

We have a supply agreement with SII and SLS for the manufacture of the antigen component of COVID-19 Vaccine and the co-formulation, fill, and finishing of the finished vaccine product. In May 2024, we entered into the SLS Supply Agreement under which SLS agreed to supply us with antigen drug substance and finished COVID-19 Vaccine doses. The SLS Supply Agreement includes the general terms and conditions of supply orders between us and SLS. We and SLS execute firm purchase orders, which include specific quantities to be delivered under the SLS Supply Agreement. We agreed to supply SLS with all Matrix-M™ adjuvant needed to manufacture finished COVID-19 Vaccine doses. Currently, we depend primarily on this supply agreement for co-formulation, filling and finishing of COVID-19 Vaccine doses.

Competition

The vaccine market is intensely competitive, characterized by rapid technological progress. Our technology is based upon utilizing the baculovirus expression system in insect cells to make recombinant vaccines. Our Matrix-M™ adjuvant has demonstrated a potent and well-tolerated effect by stimulating the entry of antigen presenting cells into the injection site and enhancing antigen presentation in local lymph nodes, boosting immune response. We believe this baculovirus expression system with our nanoparticle configuration formulated with our Matrix-M™ adjuvant offers many advantages compared to

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other technologies, such as enabling dose-sparing effects and refrigerator temperature storage. We believe our technology platform is well suited for developing COVID-19 and combination vaccines, as well as vaccines against a number of other infectious diseases and potentially beyond the infectious disease area into other therapeutic areas where we believe our technology has the capability to augment and improve on current approaches. We face competition in the development of our COVID-19 Vaccine, seasonal influenza vaccine candidate, CIC vaccine candidate and the other vaccine candidates in our pipeline, including our early-stage vaccine candidates.

A number of vaccine manufacturers, research institutions, and other organizations have developed 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. Novavax is the first protein-based COVID-19 vaccine that received EUA by the U.S. FDA and a CMA by the European Commission based on EMA in the European Union. As of February 2025, Novavax is one of three manufacturers that have a COVID-19 vaccine that has received authorization by the U.S. FDA for the 2024-2025 vaccination season, with the other manufacturers being Pfizer and Moderna. As of February 2025, the U.S. FDA has granted Pfizer and Moderna BLA approval for their updated vaccines in individuals 12 years and older and EUA for their updated vaccines in individuals 6 months to 11 years, while Novavax received EUA by the U.S. FDA for our updated COVID-19 vaccine in individuals 12 years and older. Based on our COVID-19 vaccine and its 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 UK and U.S., we believe our COVID-19 vaccine will continue to play an important role in addressing this global public health need.

Furthermore, a number of companies are selling vaccines for seasonal influenza employing a number of vaccine technologies including inactivated, recombinant and live attenuated technologies. Starting in the 2024-2025 season, all flu vaccines in the U.S. were trivalent vaccines designed to protect against three different influenza viruses, including two influenza A viruses and an influenza B / Victoria virus. 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®, an egg-based high-dose flu vaccine, Flublok®, a recombinant flu vaccine manufactured by Sanofi and Fluad®, an egg-based adjuvanted flu vaccine 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 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 2 trial results, we believe that our stand-alone influenza vaccine, our adjuvanted nanoparticle seasonal influenza product, has the potential to be at least as efficacious as current products or products being developed by our competitors. In December 2024, we initiated our Phase 3 trial for our stand-alone influenza vaccine candidate to evaluate the immunogenicity and safety in adults aged 65 and older with an initial cohort of 2,000 participants.

Additionally, we believe that our platform is well suited for combination vaccines, for example influenza and COVID-19. In December 2024, we initiated our Phase 3 trial for our CIC vaccine candidate to evaluate the immunogenicity and safety in adults aged 65 and older with an initial cohort of 2,000 participants. We are working with the U.S. FDA to determine the potential of our current CIC trial to support accelerated approval. Additionally, under the Sanofi CLA, our COVID-19 vaccine is being used in combination with two Sanofi vaccines that are separately marketed influenza vaccines, Fluzone High-Dose and Flublok, to evaluate immunogenicity and safety in Phase 1/2 combination trials. These two combination vaccine candidates were granted Fast Track designation by the U.S. FDA to prevent influenza and COVID-19 infections in individuals aged 50 and older. Other manufacturers who are actively developing a COVID-19-influenza combination vaccine candidate in Phase 3 trials and are working with the U.S FDA for regulatory approval and commercialization, include Moderna and Pfizer.

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

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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 and Proprietary Rights

We generally seek patent protection in the US and in select international countries to protect inventions that we or our partners consider important for our business interests. Patent protection in biotechnology and pharmaceuticals is uncertain and involved complex legal and factual questions. Our success will depend, in part, on whether we can:

•obtain patents to protect our own technologies and product candidates;

•obtain licenses to use the technologies of third-parties, which may be protected by patents; and

•protect our trade secrets and know-how.

Patent Rights; Licenses

We have intellectual property (patents, licenses, know-how) related to our vaccines, manufacturing processes, and other technologies. Currently, we have or have rights to over 680 U.S. and foreign patents and patent applications relating to vaccines and vaccine-related technologies, including:

•RSV: We have more than 150 combined patents and pending applications in the US and internationally relating to respiratory syncytial virus (RSV) glycoproteins, compositions, and methods of treatment. These patents will expire from 2029 to beyond 2041.

•Clostridium Difficile: We have more than 15 combined patents and pending applications in the US and internationally relating to methods and compositions for treating or preventing C. Difficile infection. These patents will expire from 2038 to beyond 2039.

•Influenza: We currently have 2 U.S. patents and pending US and international applications related to multivalent influenza compositions. These patents are anticipated to expire in 2039 and beyond

•COVID/Influenza: We have more than 40 combined patents and pending applications in the US and internationally related to compositions and methods for inducing immune responses against both influenza and coronaviruses that will expire beyond 2042 when issued.

•COVID-19: We currently have more than 50 combined patents and pending applications directed to our COVID vaccine technology that are anticipated to expire beyond 2040.

In addition to protecting our vaccine programs, we are pursuing protection for our Matrix-M® Adjuvant program, with expiration dates extending to 2044 and beyond.

We continue to prepare, file, and prosecute patent applications to provide broad and strong protection of our proprietary rights related to our vaccine products and our 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.

Trade Secrets

We also rely significantly on trade secret protection and confidentiality agreements to protect our interests. It is our policy to require employees, consultants, contractors, manufacturers, collaborators, and other advisors to execute confidentiality agreements upon the commencement of employment, consulting, or collaborative relationships with us. We also require

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confidentiality agreements from any entity that is to receive confidential information from us. With respect to employees, consultants, and contractors, the agreements generally provide that all inventions made by the individual while rendering services to us shall be assigned to us as our property.

Human Capital

Employees

As of February 18, 2025, we have 952 full-time employees, of whom approximately 8% hold MD or PhD degrees, and approximately 20% hold other advanced degrees. Of our total workforce, approximately 71% of employees are engaged primarily in research, development, and manufacturing activities, and approximately 29% of employees are mainly engaged in executive, business development, commercial, finance and accounting, legal, and administrative functions. Except for certain employees located in Europe, who are covered by collective agreements with trade unions pursuant to local law, none of our employees are represented by a labor union or works council, and none of our employees have entered into a collective bargaining agreement with us.

Compensation and Benefits; Health and Wellness

Our total rewards package is designed to attract, engage, motivate, and retain top talent. We strive to provide compensation, benefits and services that help meet the varying needs of our employees. Our total rewards package for employees in the U.S. includes competitive market pay and comprehensive benefits, including insurance to protect and maintain health; income protection through our short- and long-term disability programs and life insurance; adoption assistance and paid parental leave programs; and services to assist in balancing work and personal life, such as backup child, adult and elder care, and financial well-being programs, including monthly financial wellness seminars, one-on-one financial planning sessions, and debt and credit management support.

Our wellness initiatives include a monthly newsletter, which highlights organizations and partners, tools, and resources intended to enrich and improve our employees’ physical and mental well-being. We offer several digital apps that allow our employees to connect to an online licensed therapist or to access activities that are designed to reduce stress and anxiety and increase mindfulness and emotional well-being. We have a robust employee assistance program that allows employees to access support for a variety of life events.

In addition, we offer the majority of employees the benefit of equity ownership in the Company through equity grants or participation in our employee stock purchase plan. We believe that equity compensation has been, and will continue to be, a critical component of our compensation package because it develops a culture of ownership among our employees and aligns their interests with the interests of our stockholders.

Recruitment, Development, and Training

The attraction, development, and retention of employees is a critical factor for our success. We utilize a variety of recruitment vehicles to source top talent, including strategic partnerships with search firms, leveraging social media channels, and a robust employee referral program. In 2023, we launched the Leading@Novavax competency model to define great leadership. At Novavax, everyone is a leader, and this model and associated tools, resources, and programs are designed to develop leadership skills at all levels of the organization.

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, our employees have viewed and completed videos over 40,000 times. In addition, approximately 35 employees have participated in spot coaching. Professional development learning series are available to all employees and focus on self-awareness, collaboration, hybrid working, leadership and business acumen.

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 through our talent review and succession planning process. 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 Executive

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Development Program includes a diverse and global group of 20 employees annually. Professional development learning series are available to all employees and focus on self-awareness, collaboration, hybrid working, leadership, and business acumen.

Internal Communications

We employ a variety of channels to facilitate open and direct communication, including global forums with executives and employee surveys. In 2024, we began small group meetings for employees to engage directly with members of the executive leadership team. Our executive leadership team recognizes the importance of increased employee engagement to the success of each individual’s career and to our success as a whole.

Inclusion

Our culture of inclusivity helps us to create, develop and leverage the strengths of our workforce to meet our growth objectives. We acknowledge the merits of a diverse workforce and teach our leaders to access different perspectives when generating ideas and decision making. In 2024, we also made progress in increasing representation of women at the Executive level. We commenced and completed the reviews of three people processes: Talent Acquisition, Promotion, and Performance Management. We also have intentionally incorporated inclusivity principles into our Novavax Leadership Model.

Empowering our Employees

In 2024, Novavax sought to motivate and empower employees by providing tuition and education reimbursement and access to professional coaching and Executive Development programming for high-potential employees.

Sustainability

In addition to the human capital initiatives described above, a range of other initiatives related to sustainability are underway. These include efforts related to vaccine access and affordability, governing responsibly and sustainability. We believe that our multi-stakeholder approach through these focus areas is critical to our long-term success and enhances value for our shareholders. Examples of initiatives supportive of these focus areas include the following:

Access and Affordability

•Focused on seeking to foster an environment with no barriers to use of our vaccines due to either physical availability or pricing of the product.

•In 2024 in the U.S., participated in the Vaccines for Children (VFC) Program, which serves as a critical safety net for children under 19 who are Medicaid-eligible, uninsured, underinsured or American Indian/Alaskan Native.

•Also participated in the 317 Program, which serves uninsured and underinsured adults.

•Participated in the “Bridge Access Program For COVID Vaccines and Treatments” to provide access to COVID-19 vaccine option for adults without other sources of coverage.

•R21/Matrix-M™ adjuvant malaria vaccine, developed by the University of Oxford and its Jenner Institute and the Serum Institute of India, and formulated with our Matrix-M adjuvant is expected to be offered in 15+ countries across Africa by 2025.

•Efforts focused on clinical trial diversity (economic, race, age).

Governing Responsibly

•Policy remains in place to comply with all government and regulatory agency requirements and industry standards with good laboratory practices (“GLP”), current good manufacturing practices (“cGMP”) and good distribution practices (“GDP”).

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•Practice responsible animal welfare practices including searching for non-animal alternatives whenever possible, abiding by the 3R-principle (Reduce, Refine, Replace), working with accredited animal facilities with regional independent animal experimentation ethical review boards approving all experiments.

•“The NovaCode,” a robust handbook of written standards and business ethics policies remains in place.

•Maintain a global hotline for reporting compliance concerns with established internal investigating protocols.

•Maintain a Strategic Compliance Governance Committee to help our partners comply with U.S. regulations.

•Hold company-wide business ethics training, guidance, and raw materials review.

•Keep an anti-bribery and anti-corruption policy in place to ensure a transparent and ethical business model.

•Standard operating procedures guide decision-making.

•Abide by robust cybersecurity standards, meeting elevated government contracting requirements.

•Chief Safety Officer continues to build out a robust epidemiology benefit / risk group to better understand the safety profiles of different vaccines.

•Ongoing employee training on our updated Safety Policy.

Sustainability

•Resource management and greenhouse gas reduction strategy, which includes tracking emissions.

•An approach to Procurement that incorporates sustainability metrics into vendor evaluation and selection rubrics.

•Conserving water and monitoring energy use across multi-use leased and owned facilities.

•Sustainable saponin sourcing from our partner Desert King, the key supplier of the Quillaja saponaria (Soapbark), a tree native to central Chile. Saponin is used to produce the Matrix-M™ adjuvant.

Government Regulations

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 U.S. 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 U.S. 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 U.S. 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 U.S. FDA licensure to market any new vaccine candidate, we expect to first submit an IND that explains to the U.S. 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 U.S. 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 U.S. FDA. The U.S. FDA may,

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before a clinical trial is initiated or at any time while a clinical trial is ongoing, impose a partial or complete clinical hold based on concerns for patient safety or noncompliance with regulatory requirements. Following successful completion of all three phases of clinical development, a BLA can be submitted to the U.S. 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 U.S. FDA will only approve a BLA if the vaccine is demonstrated to be safe, pure, and potent. During the U.S. FDA’s review of a BLA, the proposed manufacturing facility undergoes a pre-approval inspection during which the U.S. 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 U.S. 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 U.S. 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 U.S. 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 U.S. 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 U.S. 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 COVID-19 PHE expired on May 11, 2023, that expiration will not terminate EUAs issued by the U.S. FDA.

In order to ensure continuing safety, the U.S. FDA and most other non-U.S. based regulatory agencies continue to oversee the production of vaccines even after the vaccine and manufacturing processes are approved. For example, monitoring of the vaccine and of production activities, including periodic facility inspections, must continue as long as the manufacturer holds a license for the product. Manufacturers may also be required to submit the results of their own tests for potency, safety, and purity for each vaccine lot, if requested by the relevant regulatory agency. They may also be required to submit samples of each vaccine lot to the agency for testing.

In addition to obtaining U.S. FDA licensure for each product, each domestic manufacturing establishment must be registered with the U.S. FDA, is subject to U.S. FDA inspection, and must comply with current Good Manufacturing Practices (“GMP”) regulations. To supply products for use either in the U.S. or outside the U.S., including clinical trials, U.S. and foreign manufacturing establishments, including third-party facilities, must comply with GMP regulations and are subject to periodic inspection by the U.S. FDA or by corresponding regulatory agencies in their home country.

The EU and the UK similarly provide a faster means to achieve approval by offering CMA to fulfil unmet medical needs. CMAs are granted with the proviso of obtaining additional comprehensive data to confirm the benefit/risk so that the MA will eventually become unconditional standard MA. For the purpose of granting a CMA, the benefit to public health of the immediate availability on the market of the medicinal product concerned should outweigh the risk inherent in the fact that additional data are still required.

The U.S. 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 U.S. 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 U.S. FDA and the U.S. FDA may initiate review of sections of a Fast Track product’s application before the application is complete. The U.S. FDA granted Fast Track Designation for our prototype COVID-19 vaccine in November 2020 and for our recombinant quadrivalent seasonal influenza vaccine candidate, in January 2020.

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Second, a product may be designated as a Breakthrough Therapy if it is intended, either alone or in combination with one or more other products, to treat a serious or life-threatening disease or condition and preliminary clinical evidence indicates that the product may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints. The U.S. FDA may hold meetings with the sponsor throughout the development process, provide timely advice to the product sponsor regarding development and approval, involve more senior staff in the review process, assign a cross-disciplinary project lead for the review team, and take other steps to design the clinical trials in an efficient manner.

Third, the U.S. FDA may designate a product for priority review if it is a product that treats a serious disease or life-threatening condition and, if approved, would provide a significant improvement in safety or effectiveness over available therapies. Significant improvement may be illustrated by evidence of increased effectiveness in the treatment of a condition, elimination or substantial reduction of a treatment-limiting product reaction, documented enhancement of patient compliance that may lead to improvement in serious outcomes, and evidence of safety and effectiveness in a new subpopulation. A priority designation is intended to direct overall attention and resources to the evaluation of such applications, and, for a drug product (including a vaccine), to shorten the U.S. FDA’s goal for taking action on a marketing application from ten months to six months.

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 U.S. 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 addition to regulatory approvals that must be obtained in the U.S., an investigational product is also subject to regulatory approval in other countries in which it is intended to be marketed. No such product can be marketed in a country until the regulatory authorities of that country have approved an appropriate marketing application. U.S.FDA licensure does not guarantee approval by other regulatory authorities. In addition, in many countries, the government is involved in the pricing of the product. In such cases, the pricing review period often begins after market approval is granted.

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 facilities in Sweden and Switzerland. 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 U.S. 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.

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Within the U.S., if we obtain appropriate approval in the future to market any of our product candidates, those products could potentially be covered by various government health benefit programs, as well as purchased by government agencies. The participation in such programs or the sale of products to such agencies is subject to regulation. In exchange for coverage, we may be obligated to provide rebates or offer discounts under government health programs or to government and private purchasers.

The U.S. and state governments continue to propose and pass legislation designed to reform delivery of, or payment for, health care, including initiatives to reduce the cost of healthcare. In March 2010, the U.S. Congress enacted the Patient Protection and Affordable Care Act and the Health Care and Education Reconciliation Act (“ACA”), which includes changes to the coverage and reimbursement of drug products under government health care programs. Since its enactment, there have been several executive, judicial and Congressional challenges to certain aspects of the ACA, and additional challenges and amendments to the ACA may reduce the profitability of drug products. Adoption of price controls and cost-containment measures and adoption of more restrictive policies in jurisdictions with existing controls and measures could further limit our net revenue and results.

Other legislative changes have been proposed and adopted in the United States since the ACA was enacted that impact drug pricing. 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. Medicare establishes payment allowances annually for COVID-19 vaccines. The Medicare payment rate for COVID-19 vaccine products and their administration is 95% of the Average Wholesale Price in the physician office setting and at reasonable cost in hospital outpatient departments. Under the Inflation Reduction Act of 2022 (“IRA”), Medicaid and CHIP programs and the Children’s Health Insurance Program (“CHIP”) are required to cover, without cost-sharing, only U.S. FDA-approved COVID-19 vaccines recommended by the ACIP. At the state level, payment rates for covered vaccines and their administration are set by the states or their contracted managed care plans.

There has been considerable public and government scrutiny in the U.S. of pharmaceutical pricing and proposals to address the perceived high cost of pharmaceuticals. There have also been several recent state legislative efforts to address drug costs, which generally have focused on increasing transparency around drug costs or limiting drug prices or price increases. Adoption of new legislation at the federal or state level could affect demand for, or pricing of, our product candidates if approved for sale. It is also possible that additional governmental action will be taken in response to the COVID-19 pandemic. We cannot predict the ultimate content, timing, or effect of any federal and state reform efforts. There is no assurance that federal or state health care reform will not adversely affect our future business and financial results.

Similarly, in many countries outside the U.S., pharmaceutical pricing is subject to regulatory market access control, particularly in countries where healthcare is provided mainly through government funding or government backed insurers. In such countries governmental organizations will generally determine firstly if a medicinal product might be adopted for use in the national health systems and reimbursed and secondly the maximum price payable.

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.

On November 20, 2020, the DHHS published a Final Rule entitled “Removal of Safe Harbor Protection for Rebates to Plans or PBMs Involving Prescription Pharmaceuticals and Creation of New Safe Harbor Protection,” commonly referred to as the “Rebate Rule,” which amends the federal Anti-Kickback Statute discount safe harbor by eliminating protection for price

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concessions, including rebates, that are offered by pharmaceutical manufacturers to plan sponsors, or pharmacy benefit managers under contract with them, under the Medicare Part D program and Medicare Advantage Plans, unless the price reduction is one required by law. The IRA will delay implementation of this Rebate Rule until 2032. 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 developments may impact our business and operations if our products are commercialized in the U.S.

Within the European Union and the United Kingdom, the provision of benefits or advantages to physicians or others to induce or encourage the prescription, recommendation, endorsement, purchase, supply, order, or use of medicinal products is prohibited. The improper provision of benefits or advantages to physicians or other individuals is also governed by the national anti-bribery laws of EU Member States and the United Kingdom, such as the UK Bribery Act 2010. Infringement of these laws could result in substantial fines and imprisonment.

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 can be 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. Companies can also be held liable for the improper actions of third parties with whom they contract to conduct business on their behalf. 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 and biotechnology companies are typically not directly regulated by HIPAA, our business may be indirectly impacted by HIPAA in our interactions with providers, payors, and others that have HIPAA compliance obligations. We are also subject to state and foreign laws governing the privacy and security of health or personal information such as the European Union General Data Protection Regulation (“GDPR”) and the California Consumer Privacy Act of 2018 (“CCPA”).

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There also are U.S. federal transparency requirements under the Physician Payments Sunshine Act that require manufacturers of U.S. FDA-approved drugs, devices, biologics and medical supplies covered by Medicare or Medicaid to report, on an annual basis, to CMS information related to payments and other transfers of value to physicians, teaching hospitals, and certain advanced non-physician health care practitioners and physician ownership and investment interests. Some U.S. states have transparency laws requiring the reporting of information that differs from the scope of information reported under the federal law, which permits these additional state requirements.

Within the European Union and the United Kingdom, payments made to physicians are subject to public disclosure governed by either national statutory or non-statutory industry self-regulatory rules. Moreover, agreements with physicians must in some countries be the subject of prior notification and approval by the physician’s employer, their competent professional organization, or the regulatory authorities of the individual country. These requirements are provided in the national laws, industry codes, or professional codes of conduct, applicable in the European Union Member States. Failure to comply with these requirements could result in reputational risk, public reprimands, administrative penalties, fines, or imprisonment.

Laws and regulations have been enacted by the federal government and various states to regulate the sales and marketing practices of pharmaceutical manufacturers with marketed products. The laws and regulations generally limit financial interactions between manufacturers and health care providers and/or require disclosure to the government and public of such interactions. Many of these laws and regulations contain ambiguous requirements or require administrative guidance for implementation. Given the lack of clarity in laws and their implementation, any future activities (if we obtain approval and/or reimbursement from federal healthcare programs for our product candidates) could be subject to challenge.

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 our COVID-19 Vaccine 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. On December 11, 2024, the Secretary of DHHS signed the 12th amendment to the declaration under the PREP Act to extend the duration of the PREP Act declaration to December 31, 2029. While we believe our products would be covered under the current PREP Act declaration, this cannot be assured.

Also, there can be no assurance that the Secretary of the DHHS will make other declarations in the future that cover any of our other product candidates or that the U.S. Congress will not act in the future to reduce coverage under the PREP Act or to repeal it altogether. If product liability lawsuits are brought against us, we may incur substantial liabilities and may be required to limit commercialization of our product candidates.

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The impacts of the 2024 U.S. election are unpredictable. Changes in leadership, especially within DHHS, have the potential to significantly impact vaccine-related policies and public health initiatives. Changes could have impacts that may include reduced funding for vaccine research and development, reduced reimbursement for vaccines and their administration, increased skepticism about vaccines among the public, and changes in vaccine mandates and recommendations.

Availability of Information

Our website address is www.novavax.com. We make available, free of charge and through our website, our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and our other filings with the SEC, and any amendments to any such reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, as soon as reasonably practicable after filed with or furnished to the SEC. The SEC maintains an Internet site that contains reports, proxy, and information statements, and other information regarding issuers that file electronically with the SEC at www.sec.gov.

We use our website (www.novavax.com) as a means of disclosing material non-public information and for complying with our disclosure obligations under Regulation Fair Disclosure promulgated by the SEC. These disclosures are included on our website (www.novavax.com) in the “Investors” or “News” sections. Accordingly, investors should monitor these portions of our website (www.novavax.com), in addition to following our press releases, SEC filings, and public conference calls and webcasts.

Also available on our website is information relating to corporate governance at Novavax and our Board of Directors, including our Code of Conduct. We intend to disclose on our website any future amendments to and waivers from this code that apply to our Chief Executive Officer, Principal Financial Officer, Principal Accounting Officer and Controller, and persons performing similar functions, as promptly as practicable, as may be required under applicable SEC and Nasdaq rules.

We webcast our earnings calls and certain events we participate in or host with members of the investment community on the investor relations section of our website. Additionally, we provide notifications of news or announcements regarding press and earnings releases as part of the investor relations section of our website. The contents of our website are not part of this Annual Report on Form 10-K, or any other report we file with, or furnish to, the SEC.

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