Revenue
The Company's accounts receivable, net, included $95.6 million and $102.9 million related to amounts that were billed to customers and $10.8 million and $5.4 million related to amounts which had not yet been billed to customers as of December 31, 2025 and 2024, respectively. During the years ended December 31, 2025 and 2024, changes in the Company's
accounts receivables and deferred revenue balances and during the years ended December 31, 2025, 2024, and 2023, changes in the Company’s allowance for credit losses were as follows (in thousands):
Balance, Beginning of PeriodAdditionsDeductions Balance, End of Period
Accounts receivable:
Year ended December 31, 2025
$115,960 $623,802 $(625,641)$114,121 
Year ended December 31, 2024
304,916 1,083,036 (1,271,992)115,960 
Allowance for credit losses:(1)
Year ended December 31, 2025
(7,675)— — (7,675)
Year ended December 31, 2024
(7,675)— — (7,675)
Year ended December 31, 2023(13,835)— 6,160 (7,675)
Deferred revenue:(2)
Year ended December 31, 2025
1,121,886 58,848 (681,738)498,996 
Year ended December 31, 2024
863,521 411,659 (153,294)1,121,886 
(1)    There was no allowance for credit losses recorded during the year ended December 31, 2025 or 2024. In 2023, there was a $6.2 million reversal of a credit loss allowance due to the collection of a previously recognized allowance for credit losses. To estimate the allowance for credit losses, the Company evaluates the credit risk related to its customers based on historical loss experience, economic conditions, the aging of receivables, and customer-specific risks.
(2)    Deductions from Deferred revenue generally relate to the recognition of revenue once performance obligations on a contract with a customer are met. During the year ended December 31, 2025, deductions include $555.7 million related to the Canada APA termination, discussed below. During the year ended December 31, 2024, additions included a $225.0 million reclassification of an upfront payment from Other current liabilities to Deferred revenue related to the settlement with Gavi as discussed below.
As of December 31, 2025, the aggregate amount of the transaction price allocated to performance obligations that were unsatisfied (or partially unsatisfied), excluding amounts related to sales-based royalties and constrained variable consideration, was $0.6 billion, of which $0.5 billion is included in Deferred revenue. Failure to meet regulatory milestones, obtain timely supportive recommendations from governmental advisory committees, or achieve product volume or delivery timing obligations may require the Company to refund portions of upfront and other payments or result in reduced future payments, which could adversely impact the Company’s ability to realize revenue from its unsatisfied performance obligations. The timing and the Company’s ability to fulfill performance obligations related to APAs will depend on the timing of product manufacturing, receipt of marketing authorizations for its COVID-19 Vaccine, delivery of doses based on customer demand, and the ability of the customer to request the Company’s updated vaccine under certain of the Company’s APAs. In the first quarter of 2025, the Company received written notice of a $23.0 million claim related to certain performance obligations under an APA agreement with a customer. The Company believes it has fulfilled the requirements related to this matter and is evaluating the merits of the claim. The timing to fulfill performance obligations related to the Sanofi Collaboration and License Agreement (“Sanofi CLA”) will depend on the timing of research and development transition services that support further regulatory approval and development of the COVID-19 Vaccine (“Sanofi Transition Services”) and services related to the technology transfer of the existing manufacturing process for the COVID-19 Vaccine products and Matrix-M™ adjuvant (the “Sanofi Technology Transfer”) and delivery of doses and other materials based on Sanofi demand.
Under an APA with Gavi, the Vaccine Alliance (“Gavi”), entered into in May 2021 (the “Gavi APA”), and a Termination and Settlement Agreement with Gavi, entered into in February 2024, (the “Gavi Settlement Agreement”) terminating the Gavi APA, the Company is responsible for 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 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 the Company’s vaccines for supply to certain low-income and lower-middle income countries. The Company has the right to price the vaccines offered to such low-income and lower-middle income countries in its discretion, and, when utilized by Gavi, the Company will credit the actual price per vaccine paid against the applicable credit. The Company intends to price vaccines offered via the tender process, consistent with its shared goal with Gavi to provide equitable access to those countries. Also, pursuant to the Gavi Settlement Agreement, the Company granted Gavi an additional credit of up to $225 million that may be applied against qualifying sales of any of the Company’s 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.
As of December 31, 2025, the remaining amounts included on the Company’s consolidated balance sheet were $225.0 in non-current Deferred revenue for the additional credit that may be applied against future qualifying sales, $80.0 million in Other current liabilities, and $195.0 million in Other non-current liabilities. In addition, the Company and Gavi entered into a security agreement pursuant to which Novavax granted Gavi a security interest in accounts receivable from SII under the SII R21 Agreement (see Note 4), which will continue for the deferred payment term of the Gavi Settlement Agreement.
Product Revenue
During the year ended December 31, 2025, 2024, and 2023, the categories of Product sales were as follows (in thousands):
Year Ended December 31,
202520242023
Product sales
 Nuvaxovid sales(1)
$625,182 $190,212 $531,389 
 Supply sales(2)
59,859 22,990 16,500 
Total Product sales
$685,041 $213,202 $547,889 
(1)Nuvaxovid sales are sales of the Company’s COVID-19 Vaccine associated with APAs with governments and commercial markets, where the Company is the commercial lead for sales and distribution, made through pharmaceutical wholesale distributors.
(2)Supply sales include commercial sales of COVID-19 Vaccine, adjuvant sales, and other material sales to the Company’s partners.
During the years ended December 31, 2025 and 2024, changes in the Company’s gross-to-net deductions balances were as follows (in thousands):
Wholesale Distributor Fees, Discounts, and Chargebacks
Product Returns
Total
Balance as of December 31, 2024$21,136 $116,697 $137,833 
Amounts charged against Product sales(1)
14,127 43,923 58,050 
Credits/deductions
(35,263)(160,620)(195,883)
Balance as of December 31, 2025
$— $— $— 
Wholesale Distributor Fees, Discounts, and Chargebacks
Product Returns
Total
Balance as of December 31, 2023$21,072 $84,616 $105,688 
Amounts charged against Product sales(1)
105,795 120,277 226,072 
Credits/deductions
(105,731)(88,196)(193,927)
Balance as of December 31, 2024
$21,136 $116,697 $137,833 
(1)    For the year December 31, 2025 and 2024, amounts charged against Product sales include $4.0 million and $14.4 million of adjustments made to prior period Product sales due primarily to changes in the estimate of product returns.
As of December 31, 2025, there were no gross-to-net deductions remaining on the consolidated balance sheet. As of December 31, 2024, $77.1 million of gross-to-net deductions were included in Accrued expenses, $10.1 million were included in Accounts payable, and $50.6 million were included in and reduced Accounts receivable on the consolidated balance sheet.
The Company has an APA with the Commonwealth of Australia (“Australia”) for the purchase of doses of COVID-19 Vaccine (the “Australia APA”). In December 2024, the Company entered into an amendment to the Australia APA pursuant to which, among other things, the Company acknowledged the cancellation by Australia of the delivery of certain doses of the Company’s COVID-19 Vaccine scheduled for delivery between the fourth quarter of 2023 and the fourth quarter of 2025 and the Company agreed to credit approximately $31 million of the advanced payment paid by Australia to the Company against outstanding invoices and invoices for the future delivery of approximately three million doses of COVID-19 Vaccine without requiring additional cash payments. In addition, the amendment provides for certain remedies for Australia, including return of unused credit, cancellation of doses, or termination of the Australia APA, in the event the Company is unable to gain regulatory approval of a variant COVID-19 Vaccine or supply doses per the terms of the agreement Specifically, Australia did not take delivery of doses that were due to be delivered in 2025 and may seek to cancel the future delivery of the 2025 as well as 2026 doses. If the Company is unable to provide doses per the supply schedule as amended, after six months, Australia may seek to terminate the APA. The amendment also provides Australia with the right to cancel doses if the Company fails to timely notify Australia of changes to the Company’s commercialization plans. In the event that the Company does not, on or before the relevant contractual deadlines, receive regulatory approval for, and deliver, the seasonally updated COVID-19 Vaccine, up to $92.5 million of deferred revenue may become refundable. As of December 31, 2025, $48.4 million was classified as current Deferred revenue and $85.4 million was classified as non-current Deferred revenue with respect to the Australia APA on the consolidated balance sheet, which will be recognized in product revenue as doses are delivered to Australia. In the third quarter of 2025, the Company withdrew its application for its COVID-19 Vaccine based on recommendations made by the TGA. The parties are in ongoing discussions and have agreed to a meeting to discuss outstanding issues and obligations under the APA. In light of these developments, the Company may seek to further amend the Australian APA, which amendment may not be achievable on acceptable terms or at all.
The Company had an 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”), for the purchase of doses of COVID-19 Vaccine (the “Canada APA”). In March 2025, the Company received a communication (the “Notice”) terminating, with immediate effect, the Canada APA on the basis of the Company not receiving regulatory approval for its COVID-19 Vaccine using bulk antigen produced at Biologics Manufacturing Centre Inc. on or before December 31, 2024, pursuant to the terms of the Canada APA. As a result of the Notice, the Company has no remaining obligations to the Canadian government under the Canada APA. Therefore, during the first quarter of 2025, the Company recognized $575.7 million, previously recorded in Deferred revenue and Other current liabilities, as Product sales. As of December 31, 2024, the Company had $555.7 million of current deferred revenue and $48.0 million of other current liabilities related to advanced payments, and other commitments previously made under the Canada APA. Under the terms of the Canada APA, $28.0 million in advanced purchase payments previously received by the Company were refundable to the Canadian government within 30 days of receipt of the Notice. The Company repaid the $28.0 million in March 2025. The Canada APA, as amended in 2023, also contemplated the Company and the Canadian government would endeavor to enter into a memorandum of understanding (the “MOU”) related to certain in-country commitments, including a $20.0 million escrow funding. The Notice also acknowledged that such MOU is no longer feasible and that the related funds may be released to the Company.
In March 2025, the Pharmaceutical Management Agency (“Pharmac”), a New Zealand Crown entity, and the Company executed a Deed of Settlement and Release (“New Zealand Settlement Agreement”) of its APA (the “New Zealand APA”). As part of the New Zealand Settlement Agreement, the Company paid Pharmac a refund of previously received upfront payments of $4.0 million. Under the New Zealand Settlement Agreement, the Company has no remaining obligation to Pharmac under the New Zealand APA. Therefore, during the first quarter of 2025, the Company recognized $27.3 million, previously in other current liabilities, as Product sales. As of December 31, 2024, the Company had $31.3 million included in Other current liabilities in the Company’s consolidated balance sheet related to the New Zealand APA.
Licensing, Royalties, and Other
Licensing, royalties, and other includes licensing payments, transition services revenue, and technology transfer revenue from the Sanofi CLA; royalty and milestone payments; and sales-based royalties.
Licensing, royalties, and other by license partner for the year ended December 31, 2025, 2024, and 2023 were as follows (in thousands):
Year Ended December 31,
202520242023
Licensing, royalties, and other
Sanofi $386,319 $459,375 $— 
Takeda41,697 937 — 
Other partners(1)
10,422 8,648 8,493 
Total licensing, royalties, and other revenue$438,438 $468,960 $8,493 
(1)Other partners revenue includes royalties and license fees associated with agreements with other partners such as Serum and SK bioscience, Co., Ltd.
Sanofi licensing, royalties, and other revenue were comprised of the following (in thousands):
Year Ended December 31,
20252024
Sanofi licensing, royalties, and other revenue
Licensing:
Upfront fee$— $389,642 
Milestones225,000 — 
Royalties5,750 — 
Transition services and technology transfer:
Upfront fee amortization(1)
43,915 34,343 
Milestones amortization(1)
20,032 15,965 
Cost reimbursements
91,622 19,425 
Total Sanofi licensing, royalties, and other revenue
$386,319 $459,375 
(1)Upfront fee amortization and Milestones amortization represent revenue recognized during the period related to a portion of the $500 million upfront payment and the $50 million milestone for database lock of an existing Phase 2/3 clinical trial in 2024 that were deferred upon achievement and are recognized in revenue over time. During the year ended December 31, 2025, the Company recognized a change in estimate to cumulative revenue recognized for the Sanofi Transition Services performance obligation of $21.7 million as further described in Note 4.
Takeda licensing, royalties, and other revenue were comprised of the following (in thousands):
Year Ended December 31,
20252024
Takeda licensing, royalties, and other revenue
Licensing:
Upfront fee(1)
$18,500 $— 
Milestones
8,151 — 
Royalties
14,258 — 
Support services788 937 
Total Takeda licensing, royalties, and other revenue
$41,697 $937 
(1)Upfront fee includes $14.5 million of nonrefundable upfront payments associated with the Amended Takeda CLA as defined below and $4.0 million of previously unrecognized consideration from the Original Takeda CLA.
Grants
The Company’s U.S. government agreement consists of a Project Agreement (the “Project Agreement”) and a Base Agreement with Advanced Technology International, the Consortium Management Firm acting on behalf of the Medical CBRN
Defense Consortium in connection with the partnership formerly known as Operation Warp Speed (the Base Agreement together with the Project Agreement, the “USG Agreement”).
The original USG Agreement required the Company to conduct certain clinical, regulatory, and other activities, including a pivotal Phase 3 clinical trial to determine the safety and efficacy of the Company’s COVID-19 Vaccine, and to manufacture and deliver to the U.S. government 100 million doses of the vaccine candidate. Funding under the USG Agreement was payable to the Company for various development, clinical trial, manufacturing, regulatory, and other activities. The USG Agreement contained terms and conditions that were customary for U.S. government agreements of this nature, including provisions giving the U.S. government the right to terminate the Base Agreement or the Project Agreement based on a reasonable determination that the funded project would not produce beneficial results commensurate with the expenditure of resources and that termination would be in the U.S. government’s interest. If the Project Agreement was terminated prior to completion, the Company was entitled to be paid for work performed and costs or obligations incurred prior to termination and consistent with the terms of the USG Agreement. As of December 31, 2023, the Company recognized the full $1.8 billion funding in revenue.

Historical Timeline

Fiscal YearFiled
2025Feb 26, 2026Showing above
2024Feb 27, 2025
2023Feb 28, 2024
2022Feb 28, 2023
2021Mar 1, 2022
2020Mar 1, 2021

About Revenue Disclosures

Revenue disclosures under ASC 606 explain how a company identifies performance obligations, allocates transaction prices, and determines when revenue is recognized. This section is essential for understanding whether reported revenue reflects genuine economic activity or aggressive accounting choices. Analysts examine the mix of point-in-time versus over-time recognition, which directly affects revenue timing and comparability.

Key signals: rising contract liabilities (deferred revenue) suggest strong future revenue visibility, while declining contract assets may indicate slowing project milestones. Watch for variable consideration estimates — rebates, returns, and performance bonuses that require management judgment. Significant changes in disaggregated revenue by geography or product line can reveal shifting business mix before it appears in headline numbers. Compare revenue growth against contract liability growth to assess sustainability, and scrutinize any changes in the timing of recognition that coincide with earnings pressure.