nvax-20240331

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

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

For the quarterly period ended March 31, 2024

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

For the transition period from to .

Commission File No. 000-26770

NOVAVAX, INC.

(Exact name of registrant as specified in its charter)


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

700 Quince Orchard Road,	Gaithersburg,	MD	20878
(Address of principal executive offices)			(Zip code)

(240) 268-2000

(Registrant's telephone number, including area code)

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


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

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

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

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


Large accelerated filer	x	Accelerated Filer	o

Non-accelerated filer	o	Smaller reporting company	o

Emerging growth company	o

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

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

The number of shares outstanding of the Registrant's Common Stock, $0.01 par value, was 140,403,554 as of April 30, 2024.

Table of Contents

NOVAVAX, INC.

TABLE OF CONTENTS


		Page No.
PART I. FINANCIAL INFORMATION		1
Item 1.	Consolidated Financial Statements	1
	Unaudited Consolidated Statements of Operations and Unaudited Consolidated Statements of Comprehensive Loss for the three months ended March 31, 2024 and 2023	2
	Consolidated Balance Sheets as of March 31, 2024 (unaudited) and December 31, 2023	3
	Unaudited Consolidated Statements of Changes in Stockholders’ Deficit for the three months ended March 31, 2024 and 2023	4
	Unaudited Consolidated Statements of Cash Flows for the three months ended March 31, 2024 and 2023	4
	Notes to the Consolidated Financial Statements (unaudited)	6
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	24
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	37
Item 4.	Controls and Procedures	38
PART II. OTHER INFORMATION		38
Item 1.	Legal Proceedings	38
Item 1A.	Risk Factors	41
Item 5	Other Information	43
Item 6.	Exhibits	44
SIGNATURES		45

Table of Contents

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

Table of Contents

NOVAVAX, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share information)

(unaudited)


	For the Three Months Ended March 31,
	2024		2023
Revenue:
Product sales	$	82,324	$	(7,457)
Grants	—		87,379
Royalties and other	11,531		1,029
Total revenue	93,855		80,951

Expenses:
Cost of sales	59,209		34,086
Research and development	92,679		247,101
Selling, general, and administrative	86,798		112,532
Total expenses	238,686		393,719
Loss from operations	(144,831)		(312,768)
Other income (expense):

Interest expense	(4,111)		(4,316)
Other income	3,654		24,362
Loss before income taxes	(145,288)		(292,722)
Income tax expense	2,262		1,183
Net loss	$	(147,550)	$	(293,905)

Net loss per share:
Basic and diluted	$	(1.05)	$	(3.41)

Weighted average number of common shares outstanding:
Basic and diluted	139,916		86,158

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS

(in thousands)

(unaudited)


	For the Three Months Ended March 31,
	2024		2023
Net loss	$	(147,550)	$	(293,905)
Other comprehensive loss:
Foreign currency translation adjustment	(13,547)		3,211
Other comprehensive income (loss)	(13,547)		3,211
Comprehensive loss	$	(161,097)	$	(290,694)

The accompanying notes are an integral part of these financial statements.

Table of Contents

NOVAVAX, INC.

CONSOLIDATED BALANCE SHEETS

(in thousands, except share and per share information)


	March 31, 2024		December 31, 2023
	(unaudited)
ASSETS
Current assets:
Cash and cash equivalents	$	480,586	$	568,505

Restricted cash	10,455		10,424
Accounts receivable	21,380		297,240
Inventory	15,778		41,696
Prepaid expenses and other current assets	198,921		226,023
Total current assets	727,120		1,143,888
Property and equipment, net	291,093		305,771
Right of use asset, net	181,175		185,218

Goodwill	123,179		127,454
Other non-current assets	30,967		35,159
Total assets	$	1,353,534	$	1,797,490
LIABILITIES AND STOCKHOLDERS’ DEFICIT
Current liabilities:
Accounts payable	$	57,724	$	132,610
Accrued expenses	257,365		394,668
Deferred revenue	240,900		241,310
Current portion of finance lease liabilities	6,291		5,142
Other current liabilities	242,102		861,408
Total current liabilities	804,382		1,635,138
Deferred revenue	841,473		622,210
Convertible notes payable	168,432		168,016
Non-current finance lease liabilities	54,609		55,923
Other non-current liabilities	351,722		33,130
Total liabilities	2,220,618		2,514,417

Commitments and contingencies (Note 13)

Preferred stock, $0.01 par value, 2,000,000 shares authorized at March 31, 2024 and December 31, 2023; no shares issued and outstanding at March 31, 2024 and December 31, 2023	—		—

Stockholders' deficit:
Common stock, $0.01 par value, 600,000,000 shares authorized at March 31, 2024 and December 31, 2023; 141,700,972 shares issued and 140,373,255 shares outstanding at March 31, 2024 and 140,506,093 shares issued and 139,505,770 shares outstanding at December 31, 2023	1,417		1,405
Additional paid-in capital	4,204,775		4,192,164
Accumulated deficit	(4,968,501)		(4,820,951)
Treasury stock, cost basis, 1,327,717 shares at March 31, 2024 and 1,000,323 shares at December 31, 2023	(93,950)		(92,267)
Accumulated other comprehensive income (loss)	(10,825)		2,722
Total stockholders’ deficit	(867,084)		(716,927)
Total liabilities and stockholders’ deficit	$	1,353,534	$	1,797,490

The accompanying notes are an integral part of these financial statements.

NOVAVAX, INC.

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' DEFICIT

Three Months Ended March 31, 2024 and 2023

(in thousands, except share information)

(unaudited)


	Common Stock			Additional Paid-in Capital		Accumulated Deficit		Treasury Stock		Accumulated Other Comprehensive Income (Loss)		Total Stockholders' Deficit
	Shares	Amount
Balance at December 31, 2023	140,506,093	$	1,405	$	4,192,164	$	(4,820,951)	$	(92,267)	$	2,722	$	(716,927)
Stock-based compensation	—	—		11,556		—		—		—		11,556
Stock issued under incentive programs	1,194,879	12		1,055		—		(1,683)		—		(616)

Foreign currency translation adjustment	—	—		—		—		—		(13,547)		(13,547)
Net loss	—	—		—		(147,550)		—		—		(147,550)
Balance at March 31, 2024	141,700,972	$	1,417	$	4,204,775	$	(4,968,501)	$	(93,950)	$	(10,825)	$	(867,084)

Balance at December 31, 2022	86,806,554	$	868	$	3,737,979	$	(4,275,889)	$	(90,659)	$	(6,377)	$	(634,078)
Stock-based compensation	—	—		28,647		—		—		—		28,647
Stock issued under incentive programs	333,277	3		1,107		—		(567)		—		543


Foreign currency translation adjustment	—	—		—		—		—		3,211		3,211
Net loss	—	—		—		(293,905)		—		—		(293,905)
Balance at March 31, 2023	87,139,831	$	871	$	3,767,733	$	(4,569,794)	$	(91,226)	$	(3,166)	$	(895,582)

The accompanying notes are an integral part of these financial statements.

NOVAVAX, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

(unaudited)


	Three Months Ended March 31,
	2024		2023
Operating Activities:
Net loss	$	(147,550)	$	(293,905)
Reconciliation of net loss to net cash used in operating activities:
Depreciation and amortization	12,147		9,043

Non-cash stock-based compensation	11,556		28,647
Provision for excess and obsolete inventory	8,807		12,490
Impairment of long-lived assets	1,669		—

Other items, net	(4,449)		(1,252)
Changes in operating assets and liabilities:
Inventory	16,819		(9,222)
Accounts receivable, prepaid expenses, and other assets	296,054		18,430
Accounts payable, accrued expenses, and other liabilities	(272,461)		(230,099)
Deferred revenue	(6,147)		140,275
Net cash used in operating activities	(83,555)		(325,593)

Investing Activities:
Capital expenditures	(6,878)		(19,801)
Internal-use software	(372)		(3,757)
Net cash used in investing activities	(7,250)		(23,558)

Financing Activities:
Net proceeds from sales of common stock	6,862		—
Net proceeds from the exercise of stock-based awards	(616)		543
Finance lease payments	(360)		(26,331)
Repayment of 2023 Convertible notes	—		(325,000)
Payments of costs related to issuance of 2027 Convertible notes	—		(3,591)
Net cash provided by (used in) financing activities	5,886		(354,379)
Effect of exchange rate on cash, cash equivalents, and restricted cash	(2,955)		(8,372)
Net decrease in cash, cash equivalents, and restricted cash	(87,874)		(711,902)
Cash, cash equivalents, and restricted cash at beginning of period	583,810		1,348,845
Cash, cash equivalents, and restricted cash at end of period	$	495,936	$	636,943

Supplemental disclosure of non-cash activities:




Capital expenditures included in accounts payable and accrued expenses	$	1,208	$	10,847
Internal-use software included in accounts payable and accrued expenses	$	250	$	—

Supplemental disclosure of cash flow information:
Cash interest payments, net of amounts capitalized	$	1,206	$	6,566
Cash paid for income taxes, net of refunds	$	(71)	$	—

The accompanying notes are an integral part of these financial statements.

NOVAVAX, INC.

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

March 31, 2024

(unaudited)

Note 1 – Organization and Business

Novavax, Inc. (“Novavax,” and together with its wholly owned subsidiaries, the “Company”) is a biotechnology company that promotes improved health by discovering, developing, and commercializing innovative vaccines to prevent serious infectious diseases. Novavax offers a differentiated vaccine platform that combines a recombinant protein approach, innovative nanoparticle technology and patented Matrix-M™ adjuvant to enhance the immune response. Novavax currently has one commercial program, for vaccines to prevent COVID-19, which includes Nuvaxovid™ prototype COVID-19 vaccine ("NVX-CoV2373,” or “prototype vaccine”) and Nuvaxovid™ updated COVID-19 vaccine (“NVX-CoV2601,” or “updated vaccine”) (collectively, “COVID-19 Vaccine”). Local regulatory authorities have also specified nomenclature for the labeling of the prototype and updated vaccines within their territories (e.g., “Novavax COVID-19 Vaccine, Adjuvanted” and “Novavax COVID-19, Adjuvanted (2023-2024 Formula),” respectively, for the U.S.). The Company’s partner, Serum Institute of India Pvt. Ltd. (“SIIPL”), markets NVX-CoV2373 as “Covovax™.”

Beginning in 2022, the Company received approval, interim authorization, provisional approval, conditional marketing authorization, and emergency use authorization (“EUA”) from multiple regulatory authorities globally for its prototype vaccine for both adult and adolescent populations as a primary series and for both homologous and heterologous booster indications in select territories. In October 2023, the U.S. Food and Drug Administration amended the EUA for its prototype vaccine to include its updated vaccine. The amended EUA authorizes use of the Company’s updated vaccine in individuals 12 years and older. In October 2023, the European Commission (“EC”) granted approval for the Company’s updated vaccine for active immunization to prevent COVID-19 caused by SARS-CoV-2 in individuals aged 12 and older. Currently, the Company significantly depends on its supply agreement with SIIPL and its subsidiary, Serum Life Sciences Limited (“SLS”), for co-formulation, filling and finishing (other than in Europe) and on its service agreement with PCI Pharma Services for finishing in Europe.

Novavax is advancing development of other vaccine candidates, including its COVID-19-Influenza Combination (“CIC”) vaccine candidate and additional vaccine candidates. The Company’s COVID-19 Vaccine and its other vaccine candidates incorporate the Company’s proprietary Matrix-M™ adjuvant to enhance the immune response and stimulate higher levels of functional antibodies and induce a cellular immune response.

Note 2 – Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. The consolidated financial statements are unaudited but include all adjustments (consisting of normal recurring adjustments) that the Company considers necessary for a fair presentation of the financial position, operating results, comprehensive loss, changes in stockholders’ deficit, and cash flows for the periods presented. Although the Company believes that the disclosures in these unaudited consolidated financial statements are adequate to make the information presented not misleading, certain information and footnote information normally included in consolidated financial statements prepared in accordance with U.S. GAAP have been condensed or omitted as permitted under the rules and regulations of the United States Securities and Exchange Commission (“SEC”).

The unaudited consolidated financial statements include the accounts of Novavax, Inc. and its wholly owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. The aggregate foreign currency transaction gains and losses resulting from the conversion of the transaction currency to functional currency were a $5.1 million loss and a $16.3 million gain for the three months ended March 31, 2024 and 2023, respectively, which are reflected in Other income (expense).

The accompanying unaudited consolidated financial statements should be read in conjunction with the financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2023. Results for this or any interim period are not necessarily indicative of results for any future interim period or for the entire year. The Company operates in one business segment.

Liquidity and Going Concern

The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern within one year after the date that the financial statements are issued and contemplates the realization of assets and satisfaction of liabilities in the ordinary course of business. The consolidated financial statements do not include any adjustments relating to the recoverability and classification of recorded asset amounts or the amounts and classification of liabilities that might result from the outcome of the uncertainty described below.

Management’s plans discussed below, including specifically the execution of the collaboration and license agreement (the “Collaboration and License Agreement”) and securities subscription agreement (the “Subscription Agreement”) effective May 10, 2024, with Sanofi Pasteur Inc. (“Sanofi”) which will result in cash proceeds to the Company of $568.8 million during the second quarter of 2024, has alleviated the substantial doubt outlined below regarding the Company’s ability to continue as a going concern for the one year period from the date that these financial statements were issued.

As of March 31, 2024, the Company had $480.6 million in cash and cash equivalents and had a working capital deficiency. During the three months ended March 31, 2024, the Company incurred a net loss of $147.6 million and had net cash flows used in operating activities of $83.6 million.

In accordance with Accounting Standards Codification (“ASC”) Topic 205-40, Presentation of Financial Statements - Going Concern, the Company evaluated whether there are conditions and events, considered in the aggregate, that raise substantial doubt about its ability to continue as a going concern within one year after the date that these consolidated financial statements are issued. While the Company’s current cash flow forecast for the one-year going concern look forward period estimates that there will be sufficient capital available to fund operations, this forecast is subject to significant uncertainty, including as it relates to revenue for the next 12 months and the Company’s ability to execute on certain cost-reduction initiatives. The Company’s revenue projections depend on its ability to successfully develop, manufacture, distribute, and market its updated vaccine for the 2024-2025 vaccination season, which is inherently uncertain and subject to a number of risks, including the Company’s ability to obtain regulatory authorizations, introduce a single-dose vial or pre-filled syringe product presentation for the U.S. commercial and certain other markets, the incidence of COVID-19 during the 2024-2025 vaccination season, and the Company’s ability to timely deliver doses and achieve commercial adoption and market acceptance of its updated vaccine. Further, the Company’s revenue projections also depend on its ability to achieve expected product sales and related cash flows under its advance purchase agreements (“APAs”), including APAs in Australia and Canada, which are subject to regulatory uncertainties as described in Note 3.

Failure to meet regulatory milestones or achieve product volume or delivery timing obligations under the Company’s APAs may require the Company to refund portions of upfront and other payments or result in reduced future payments, which would adversely affect the Company’s ability to continue as a going concern.

Management believes that, given the history of recurring losses, negative working capital, and accumulated deficit, conditions or events exist that raise substantial doubt about the Company’s ability to continue as a going concern through one year from the date that these financial statements are issued. Management’s plans to potentially alleviate such conditions or events include the execution effective May 10, 2024, of the Collaboration and License Agreement with Sanofi that grants a co-exclusive license to Sanofi of the Company’s current COVID-19 and related vaccine products, which will provide the Company with an initial $500 million nonrefundable upfront payment, as well as the execution effective May 10, 2024, of the Subscription Agreement with Sanofi, which will provide the Company with a $68.8 million equity investment, both of which are expected to be received in the second quarter of 2024 and are described further below. Management’s plans also include execution of its commercial plans and its ongoing restructuring and cost reduction measures.

On May 10, 2024, the Company entered into the Collaboration and License Agreement with Sanofi pursuant to which Sanofi received:

i) A co-exclusive license to commercialize with the Company all of the Company’s current stand-alone COVID-19 vaccine products, including the Company’s Nuvaxovid™ prototype COVID-19 vaccine and Nuvaxovid™ updated COVID-19 vaccine, and updated versions that address seasonal variants throughout the world (“COVID Mono Products”),

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

iii) A non-exclusive license to develop and commercialize combination products containing both the Company’s COVID-19 vaccine and one or more non-influenza vaccines (“Other Combination Products” and together with the COVID Mono 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 the Company’s Matrix-M™ adjuvant (as described below, the “Adjuvant Products”).

Under the Collaboration and License Agreement, the Company will receive a non-refundable upfront payment of $500 million. In addition, the Company will also be eligible to receive development, technology transfer, launch, and sales milestone payments totaling up to $700 million in the aggregate with respect to the Licensed COVID-19 Products and royalty payments on Sanofi’s sales of such licensed products. In addition, the Company is 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.

Commencing shortly after the Effective Date of the Collaboration and License Agreement, the Company will perform a technology transfer of its manufacturing process for the COVID Mono Products and Matrix-M™ components to Sanofi. Until the successful completion of such transfer, the Company will supply Sanofi with both COVID Mono Products and Matrix-M™ intermediary components for Sanofi’s use and is eligible for reimbursement of such costs from Sanofi. Additionally, Sanofi will reimburse the Company for its research and development and medical affairs costs related to the COVID Mono Products in accordance with agreed upon plans and budgets.

Under the Collaboration and License Agreement, the Company will continue to commercialize the COVID Mono Products in 2024. Beginning in 2025 and continuing during the term of the Collaboration and License Agreement, Sanofi and the Company will commercialize the COVID Mono Products worldwide in accordance with a commercialization plan agreed by the Company and Sanofi, under which the Company will continue to supply its existing APA customers and strategic partners, including Takeda, SK Biosciences, and the Serum Institute of India. Upon completion of the existing advance purchase agreements, Novavax and Sanofi will jointly agree on commercialization activities of each party in each jurisdiction.

Effective May 10, 2024, the Company also entered into the Subscription Agreement with Sanofi, pursuant to which the Company sold and issued to Sanofi, in a private placement, 6,880,481 shares of the Company’s common stock, par value $0.01 per share at a price of $10.00 per share for aggregate gross proceeds to the Company of $68.8 million.

In May 2023, the Company announced a global restructuring and cost reduction plan (the “2023 Restructuring Plan”), which includes a more focused investment in its COVID-19 Vaccine, reduction to its pipeline spending, the continued rationalization of its manufacturing network, a reduction to the Company’s global workforce, as well as the consolidation of facilities, and infrastructure. In January 2024, as part of reducing combined research and development and selling, general and administrative expenses, the Company announced further reductions in its global workforce (the “2024 Cost Reduction Plan”). The Company intends to prioritize improvements to its long-term supply chain efficiency. The Company expects the full annual impact of the 2023 Restructuring Plan to be realized in 2024, the full annual impact of the 2024 Cost Reduction Plan to be realized in 2025, and approximately 85% of the annual impact of the 2024 Cost Reduction Plan, excluding one-time charges, to be realized in 2024. The 2024 Cost Reduction Plan supplemented the 2023 Restructuring Plan and hereafter both are jointly referred to as the “Restructuring Plan.” During the three months ended March 31, 2024, the Company recorded a charge of $4.4 million related to one-time employee severance and benefit costs and recorded an impairment charge of $1.7 million related to the impairment of capitalized internal-use software (see Note 14).

Management’s plans may also include raising additional capital through a combination of additional equity and debt financing, additional collaborations, strategic alliances, asset sales, and marketing, distribution, or licensing arrangements. New financings may not be available to the Company on commercially acceptable terms, or at all. Also, any additional collaborations, strategic alliances, asset sales and marketing, distribution, or licensing arrangements may require the Company to give up some or all of its rights to a product or technology, which in some cases may be at less than the full potential value of such rights. If the Company is unable to obtain additional capital, the Company will assess its capital resources and may be required to delay, reduce the scope of, or eliminate some or all of its operations, or further downsize its organization, any of which may have a material adverse effect on its business, financial condition, results of operations, and ability to operate as a going concern.

Management’s plans discussed above, including specifically the execution of the Collaboration and License Agreement and the Subscription Agreement effective May 10, 2024, with Sanofi which will result in cash proceeds to the Company of $568.8 million during the second quarter of 2024, has alleviated the substantial doubt outlined below regarding the Company’s ability to continue as a going concern for the one year period from the date that these financial statements were

issued.

Use of Estimates

The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ materially from those estimates.

Restructuring

The Company recognizes restructuring charges when such costs are incurred. The Company’s restructuring charges consist of employee severance and other termination benefits related to the reduction of its workforce, the consolidation of facilities, and infrastructure and other costs. Termination benefits are expensed on the date the Company notifies the employee, unless the employee must provide future service, in which case the benefits are expensed ratably over the future service period. Ongoing benefits are expensed when restructuring activities are probable and the benefit estimable.

See Note 14 for additional information on the severance and employee benefit costs for terminated employees and impairment of assets in connection with the Company’s Restructuring Plan.

Recent Accounting Pronouncements

Not Yet Adopted

In October 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-06, Disclosure Improvements (“ASU 2023-06”), to clarify or improve disclosure and presentation requirements of a variety of topics and align the requirements in the FASB ASC with the SEC's regulations. The Company is currently evaluating ASU 2023-06 to determine its impact on the Company's consolidated financial statements and disclosures.

In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures (“ASU 2023-09”). The standard enhances transparency in income tax disclosures by requiring, on an annual basis, certain disaggregated information about a reporting entity’s effective tax rate reconciliation and income taxes paid. The ASU also requires disaggregated disclosure related to pre-tax income (or loss) and income tax expense (or benefit) and eliminates certain disclosures related to the balance of an entity’s unrecognized tax benefit and the cumulative amount of certain temporary differences. The ASU is effective for the Company beginning on January 1, 2025. The Company is currently evaluating ASU 2023-09 to determine its impact on the Company's disclosures.

Note 3 – Revenue

The Company's accounts receivable included $21.2 million and $286.4 million related to amounts that were billed to customers and $0.2 million and $10.8 million related to amounts which had not yet been billed to customers as of March 31, 2024 and December 31, 2023, respectively. During the three months ended March 31, 2024 and 2023, changes in the Company’s accounts receivables, allowance for credit losses, and deferred revenue balances were as follows (in thousands):


	Balance, Beginning of Period		Additions		Deductions		Balance, End of Period
Accounts receivable:
Three Months Ended March 31, 2024	$	304,916	$	136,510	$	(412,370)	$	29,056
Three Months Ended March 31, 2023	96,210		146,424		(115,950)		126,684
Allowance for credit losses(1):
Three Months Ended March 31, 2024	$	(7,676)	$	—	$	—	$	(7,676)
Three Months Ended March 31, 2023	(13,835)		—		—		(13,835)
Deferred revenue:(2)
Three Months Ended March 31, 2024	$	863,521	$	225,000	$	(6,148)	$	1,082,373
Three Months Ended March 31, 2023	549,551		140,324		(49)		689,826

(1) There was no allowance for credit losses recorded during the three months ended March 31, 2024 or 2023. 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 related to the recognition of revenue once performance obligations on a contract with a customer are met. During the three months ended March 31, 2024, deductions included a $2.2 million reclassification of refundable upfront payments previously included in Deferred revenue to Other current liabilities. During the three months ended March 31, 2024, additions included a $225.0 million reclassification of refundable upfront payment from Other current liabilities to Deferred revenue related to the settlement with Gavi as discussed below. There were no such reclassifications during the three months ended March 31, 2023.

As of March 31, 2024, the aggregate amount of the transaction price allocated to performance obligations that were unsatisfied (or partially unsatisfied), excluding amounts related to sales-based royalties, was approximately $2 billion of which $1.1 billion was 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 under the Company’s APAs 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 to fulfill performance obligations related to APAs will depend on the timing of product manufacturing, receipt of marketing authorizations for additional indications, delivery of doses based on customer demand, and the ability of the customer to request the Company’s updated vaccine under certain of the Company’s APAs.

Under an APA with Gavi, the Vaccine Alliance (“Gavi”), entered into in May 2021 (the “Gavi APA”), the Company received upfront payments of $700 million from Gavi (the “Advance Payment Amount”) to be applied against purchases of the Company’s prototype vaccine by certain countries participating in the COVAX Facility. As of December 31, 2023, the remaining Gavi Advance Payment Amount was $696.4 million. On February 16, 2024, the Company entered into a Termination and Settlement Agreement with Gavi (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. On February 22, 2024, the claims and counterclaims were dismissed with prejudice. Pursuant to the Gavi Settlement Agreement, the Company is responsible for payment to Gavi of (i) an initial settlement payment of $75 million, which the Company 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 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.

The Company 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 reduction to revenue during the three months ended March 31, 2024. As of March 31, 2024, the remaining amounts included on the Company’s consolidated balance sheet are classified as $225 million in non-current Deferred revenue for the additional credit that may be applied against future qualifying sales, $80 million in Other current liabilities, and $320 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 SIIPL under the SIIPL R21 Agreement (see Note 4), which will continue for the deferred payment term of the Gavi Settlement Agreement.

Product Sales

Product sales by the Company’s customer’s geographic location was as follows (in thousands):


	Three Months Ended March 31,
	2024		2023
North America	$	(6,361)	$	—
Europe	90,416		57,267
Rest of the world	(1,731)		(64,724)
Total product sales revenue	$	82,324	$	(7,457)

Product sales in the U.S. are primarily made through large pharmaceutical wholesale distributors at the wholesale acquisition cost (“WAC”). Product sales in the U.S. are recorded net of gross-to-net deductions. During the three months ended March 31, 2024, product sales in North America includes $6.4 million of gross-to-net deductions in excess of the WAC, primarily due to wholesale distributor fees for shipments expected to be returned and adjustments made to estimated returns of prior period product sales. Product sales for the rest of the world includes a $3.6 million reduction to revenue recognized pursuant to the Gavi Settlement Agreement as discussed above.

As of March 31, 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, 2023	$	21,072	$	84,616	$	105,688
Amounts charged against product sales(1)	16,076		19,296		35,372
Payments	(26,979)		(10,999)		(37,978)
Balance as of March 31, 2024	$	10,169	$	92,913	$	103,082

(1) Amounts charged against product sales include $3.4 million of adjustments made to prior period product sales due primarily to changes in the estimate of product returns.

As of March 31, 2024 and December 31, 2023, $5.4 million and $2.6 million of gross-to-net deductions were included in Accounts receivable, respectively, and $97.7 million and $103.1 million were included in Accrued expenses, respectively.

The Company has an APA with the Commonwealth of Australia (“Australia”) for the purchase of doses of COVID-19 Vaccine (the “Australia APA”). In November 2023, the Company filed with the Therapeutic Goods Administration (“TGA”) for authorization for its updated vaccine. Based on subsequent communication from the TGA that it will not recommend

approval of the filing as submitted and new data and information generated since that filing, the Company is evaluating the regulatory path for approval, including the potential to update the filing with new data and information, and resubmit in the coming months. In March 2024, the Company and Australia agreed to cancel the COVID-19 Vaccine doses previously scheduled for delivery in the fourth quarter of 2023. As a result of the cancellation, the total contract value was reduced by $54.0 million, including $6.0 million of deferred revenue related to the cancelled doses that will be applied as a credit towards future deliveries of doses. Under the Australia APA, Australia is not required to purchase the updated COVID-19 Vaccine doses until the Company receives authorization from TGA. The Company plans to seek an amendment to the Australia APA to address performance obligations and future delivery schedule, which may not be achievable on acceptable terms or at all.

The Company had an APA with the EC acting on behalf of various European Union member states to supply a minimum of 20 million and up to 100 million initial doses of prototype vaccine, with the option for the EC to purchase an additional 100 million doses up to a maximum aggregate of 200 million doses in one or more tranches, through 2023. In January 2023, the Company finalized a revised delivery schedule for the remaining committed doses under the APA that were originally scheduled for delivery during the first and second quarters of 2022. The APA expired in August 2023 and required that any open and outstanding orders from European Union member states be satisfied by February 2024. All outstanding orders were delivered to European Union Member states by February 2024.

The Company has 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”). The Canadian government may terminate the Canada APA, as amended, if the Company fails to receive regulatory approval for its COVID-19 Vaccine using bulk antigen produced at Biologics Manufacturing Centre (“BMC”) Inc. on or before December 31, 2024. The Company does not anticipate achieving regulatory approval of its COVID-19 Vaccine using bulk antigen produced at BMC on or before December 31, 2024. Therefore, the Company plans to seek an amendment to the Canada APA to address possible alternatives, which may not be achievable on acceptable terms or at all. As of March 31, 2024, $110.6 million was classified as current Deferred revenue and $477.6 million was classified as non-current Deferred revenue with respect to the Canadian APA in the Company’s consolidated balance sheet. If the Canadian government terminates the Canada APA, $28.0 million of the deferred revenue would become refundable and approximately $224 million of the contract value related to future deliverables would no longer be available.

Grants

The Company’s U.S. government agreement consisted 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”). As of December 31, 2023, the Company recognized the full $1.8 billion funding in revenue.

Royalties and Other

Royalties and other includes royalty milestone payments, sales-based royalties, and Matrix-M™ adjuvant sales.

During the three months ended March 31, 2024, the Company recognized $4.0 million in revenue related to license fees and $7.5 million in revenue related to a Matrix-M™ adjuvant sales. During the three months ended March 31, 2024, the Company did not recognize revenue related to milestone payments.

During the three months ended March 31, 2023, the Company recognized $1.0 million in revenue related to a Matrix-M™ adjuvant sales. During the three months ended March 31, 2023, the Company did not recognize revenue related to license fees or milestone payments.

Note 4 – Collaboration, License, and Supply Agreements

SIIPL

The Company previously granted SIIPL exclusive and non-exclusive licenses for the development, co-formulation, filling and finishing, registration, and commercialization of its prototype vaccine, its proprietary COVID-19 variant antigen candidate(s), and its CIC vaccine candidate. SIIPL agreed to purchase the Company's Matrix-M™ adjuvant and the Company granted SIIPL a non-exclusive license to manufacture the antigen drug substance component of the Company’s COVID-19 Vaccine in SIIPL’s licensed territory solely for use in the manufacture of COVID-19 Vaccine. The Company and SIIPL equally split the revenue from SIIPL’s sale of COVID-19 Vaccine in its licensed territory, net of agreed costs. The Company also has a supply agreement with SIIPL and SLS under which SIIPL and SLS supply the Company with prototype vaccine, its proprietary COVID-19 variant antigen candidate(s), and its CIC vaccine candidate for commercialization and sale in certain territories, as well as a contract development manufacture agreement with SLS, under which SLS manufactures and supplies finished vaccine product to the Company using antigen drug substance and Matrix-M™ adjuvant supplied by the Company. In March 2020, the Company entered into an agreement with SIIPL that granted SIIPL a non-exclusive license for the use of Matrix-M™ adjuvant supplied by the Company to develop, manufacture, and commercialize R21/Matrix-M™ adjuvant (“SIIPL R21 Agreement”), a malaria vaccine created by the Jenner Institute, University of Oxford (“R21/Matrix-M™”). In December 2023, R21/Matrix-M™ received prequalification by the World Health Organization (“WHO”). Under the SIIPL R21 Agreement, SIIPL purchases the Company's 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 Pharmaceutical Company Limited

The Company has a collaboration and license agreement with Takeda Pharmaceutical Company Limited (“Takeda”) under which the Company granted Takeda an exclusive license to develop, manufacture, and commercialize the Company’s COVID-19 Vaccine in Japan. Under the agreement, Takeda purchases Matrix-M™ adjuvant from the Company to manufacture doses of COVID-19 Vaccine, and the Company is 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. In September 2021, Takeda finalized an agreement with the Government of Japan’s Ministry of Health, Labour and Welfare ("MHLW") for the purchase of 150 million doses of its prototype vaccine. In February 2023, MHLW canceled the remainder of doses under its agreement with Takeda. As a result, it is uncertain whether the Company will receive future sales-based royalty payments from Takeda under the terms and conditions of their current collaboration and licensing agreement.

Sanofi

Effective May 10, 2024, the Company entered into the Collaboration and License Agreement with Sanofi pursuant to which Sanofi received:

i) A co-exclusive license to commercialize with the Company all of the COVID Mono Products,

ii) A sole license to develop and commercialize combination COVID and influenza Combination Products,

iii) A non-exclusive license to develop and commercialize Other Combination Products, and

iv) A non-exclusive license to develop and commercialize Adjuvant Products.

Bill & Melinda Gates Medical Research Institute

In May 2023, the Company entered into a three-year agreement with the Bill & Melinda Gates Medical Research Institute to provide the Company’s Matrix-M™ adjuvant for use in preclinical vaccine research.

Other Supply Agreements

In March 2024, the Company, FUJIFILM Diosynth Biotechnologies UK Limited (“FDBK”), FUJIFILM Diosynth Biotechnologies Texas, LLC (“FDBT”) and FUJIFILM Diosynth Biotechnologies USA, Inc. (“FDBU” and together with FDBK and FDBT, “Fujifilm”) entered into a Confidential Settlement Agreement and Release (the “Settlement Agreement”) to resolve disputes regarding amounts that Fujifilm claimed were due under a prior Confidential Settlement Agreement and Release effective September 30, 2022 (the “CSAR”) by and between the Company and Fujifilm.

Under the CSAR, the Company agreed to pay up to $185.0 million to Fujifilm in connection with the cancellation of manufacturing activity at FDBT. The final two quarterly installments due to Fujifilm in 2023 under the CSAR, totaling $68.6 million, were subject to Fujifilm’s obligation to use commercially reasonable efforts to mitigate losses associated with the vacant manufacturing capacity caused by the termination of manufacturing activities at FDBT. In October 2023, the Company sent Fujifilm a notice of breach and refused to pay the final two installments based on its contention that Fujifilm had not used commercially reasonable efforts to mitigate losses and should have offset some portion of the final two payments. In October 2023, Fujifilm filed a demand for arbitration with Judicial Arbitration and Mediation Services (“JAMS”) seeking payment of the full amount (the “Fujifilm Arbitration”).

Pursuant to the Settlement Agreement, in March 2024 the Company paid $42.0 million to Fujifilm, the parties agreed to a mutual release of claims arising from, under or otherwise in connection with the CSAR, and Fujifilm agreed to dismiss the Fujifilm Arbitration. This payment is less than amounts previously accrued for and reflected in Research and development expense, and accordingly, the Company recorded a benefit of $26.6 million as Research and development expense during the three months ended March 31, 2024 upon the execution of the Settlement Agreement.

The Company continues to assess its manufacturing needs and intends to modify its global manufacturing footprint consistent with its contractual obligations to supply, and anticipated demand for, its COVID-19 Program, and in doing so, recognizes that significant costs may be incurred.

Note 5 – Cash, Cash Equivalents, and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported in the consolidated

balance sheets that sums to the total of such amounts shown in the consolidated statements of cash flows (in thousands):


	March 31, 2024		December 31, 2023
Cash and cash equivalents	$	480,586	$	568,505
Restricted cash, current	10,455		10,424
Restricted cash, non-current(1)	4,895		4,881
Cash, cash equivalents, and restricted cash	$	495,936	$	583,810

(1)Classified as Other non-current assets as of March 31, 2024 and December 31, 2023, on the consolidated balance sheets.

Note 6 – Fair Value Measurements

The following table represents the Company’s fair value hierarchy for its financial assets and liabilities (in thousands):


	Fair Value at March 31, 2024						Fair Value at December 31, 2023
Assets	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Money market funds(1)	$	118,470	$	—	$	—	$	171,824	$	—	$	—
Government-backed securities(1)	—		200,000		—		—		200,000		—
Treasury securities(1)	—		46,875		—		—		45,622		—
Corporate debt securities(1)	—		61,428		—		—		—		—
Total cash equivalents	$	118,470	$	308,303	$	—	$	171,824	$	245,622	$	—
Liabilities
5.00% Convertible notes due 2027	$	—	$	109,088	$	—	$	—	$	100,909	$	—

(1)All investments are classified as Cash and cash equivalents as of March 31, 2024 and December 31, 2023, on the consolidated balance sheets.

Fixed-income investments categorized as Level 2 are valued at the custodian bank by a third-party pricing vendor’s valuation models that use verifiable observable market data, such as interest rates and yield curves observable at commonly quoted intervals and credit spreads, bids provided by brokers or dealers, or quoted prices of securities with similar characteristics. Pricing of the Company’s convertible notes has been estimated using observable inputs, including the price of the Company’s common stock, implied volatility, interest rates, and credit spreads.

During the three months ended March 31, 2024 and 2023, the Company did not have any transfers between levels.

The amount in the Company’s consolidated balance sheets for accounts payable and accrued expenses approximates its fair value due to its short-term nature.

Note 7 – Inventory

Inventory consisted of the following (in thousands):


	March 31, 2024		December 31, 2023
Raw materials	$	5,295	$	6,614
Semi-finished goods	8,984		7,392
Finished goods	1,499		27,690
Total inventory	$	15,778	$	41,696

Inventory write-downs as a result of excess, obsolescence, expiry, or other reasons, and losses on firm purchase commitments, offset by recoveries of such commitments, are recorded as a component of cost of sales in the Company’s consolidated statements of operations. For the three months ended March 31, 2024, inventory write-downs were $8.8 million. For the three months ended March 31, 2023, inventory write-downs were $12.5 million and losses on firm purchase commitments were $7.7 million. In addition, for the three months ended March 31, 2023 the Company recorded recoveries on

firm purchase commitments of $0.8 million related primarily to negotiated reductions to previously recognized firm purchase commitments.

Note 8 – Goodwill

The Company has one reporting unit, which has a negative carrying amount as of March 31, 2024 and December 31, 2023. The change in the carrying amounts of goodwill for the three months ended March 31, 2024 was as follows (in thousands):


	Amount
Balance at December 31, 2023	$	127,454
Currency translation adjustments	(4,275)
Balance at March 31, 2024	$	123,179

Note 9 – Long-Term Debt

Total convertible notes payable consisted of the following (in thousands):


	March 31, 2024		December 31, 2023





5.00% Convertible notes due 2027	$	175,250	$	175,250

Unamortized debt issuance costs	(6,818)		(7,234)
Total convertible notes payable	$	168,432	$	168,016

The effective interest rate of the 2027 Convertible notes is 6.2%. During the three months ended March 31, 2023, the Company repaid the outstanding principal amount of $325.0 million on its 3.75% Convertible notes due in 2023, together with accrued but unpaid interest on the maturity date.

The interest expense incurred in connection with the convertible notes payable consisted of the following (in thousands):


	Three Months Ended March 31,
	2024		2023
Coupon interest	$	2,192	$	3,206
Amortization of debt issuance costs	416		510
Total interest expense on convertible notes payable	$	2,608	$	3,716

Note 10 – Stockholders’ Deficit

In August 2023, the Company entered into an At Market Issuance Sales Agreement (the “August 2023 Sales Agreement”), which allows it to issue and sell up to $500 million in gross proceeds of shares of its common stock, and terminated its then-existing At Market Issuance Sales agreement entered in June 2021 (the “June 2021 Sales Agreement”). During the three months ended March 31, 2024, there were no sales recorded under the August 2023 Sales Agreement. As of March 31, 2024, the remaining balance available under the August 2023 Sales Agreement was approximately $242 million.

During the three months ended March 31, 2023, there were no sales recorded under the June 2021 Sales Agreement.

Note 11 – Stock-Based Compensation

Equity Plans

In January 2023, the Company established the 2023 Inducement Plan (the “2023 Inducement Plan”), which provides for the granting of share-based awards to individuals who were not previously employees, or following a bona fide period of non-employment, as an inducement material to such individuals entering into employment with the Company. The Company reserved 1.0 million shares of common stock for grants under the 2023 Inducement Plan. As of March 31, 2024, there were 0.2 million shares available for issuance under the 2023 Inducement Plan.

The 2015 Stock Incentive Plan, as amended (“2015 Plan”), was approved at the Company’s annual meeting of stockholders in June 2015. Under the 2015 Plan, equity awards may be granted to officers, directors, employees, and consultants of and advisors to the Company and any present or future subsidiary.

The 2015 Plan authorizes the issuance of up to 21.0 million shares of common stock under equity awards granted under the 2015 Plan. All such shares authorized for issuance under the 2015 Plan have been reserved. The 2015 Plan will expire on March 30, 2033. As of March 31, 2024, there were 2.6 million shares available for issuance under the 2015 Plan.

The Amended and Restated 2005 Stock Incentive Plan (“2005 Plan”) expired in February 2015 and no new awards may be made under such plan, although awards will continue to be outstanding in accordance with their terms.

The 2023 Inducement Plan and the 2015 Plan permit, and the 2005 Plan permitted, the grant of stock options (including incentive stock options), restricted stock, stock appreciation rights (“SARs”), and restricted stock units (“RSUs”). In addition, under the 2023 Inducement Plan and the 2015 Plan, unrestricted stock, stock units, and performance awards may be granted. Stock options and SARs generally have a maximum term of ten years and may be or were granted with an exercise price that is no less than 100% of the fair market value of the Company’s common stock at the time of grant. Grants of share-based awards are generally subject to vesting over periods ranging from one to four years.

The Company recorded stock-based compensation expense in the consolidated statements of operations as follows (in thousands):


	Three Months Ended March 31,
	2024		2023
Cost of sales	$	594	$	519
Research and development	5,505		13,858
Selling, general, and administrative	5,457		14,270
Total stock-based compensation expense	$	11,556	$	28,647

During the three months ended March 31, 2024, and March 31, 2023, there was no stock-based compensation capitalized in inventory.

As of March 31, 2024, there was approximately $87 million of total unrecognized compensation expense related to unvested stock options, SARs, RSUs, and the ESPP. This unrecognized non-cash compensation expense is expected to be recognized over a weighted-average period of approximately two years and will be allocated between cost of sales, research and development, and general and administrative expenses accordingly. This estimate does not include the impact of other possible stock-based awards that may be made during future periods.

The aggregate intrinsic value represents the total intrinsic value (the difference between the Company’s closing stock price on the last trading day of the period and the exercise price, multiplied by the number of in-the-money stock options and SARs) that would have been received by the holders had all stock option and SAR holders exercised their stock options and SARs on March 31, 2024. This amount is subject to change based on changes to the closing price of the Company's common stock. The aggregate intrinsic value of stock options and SARs exercises and vesting of RSUs for the three months ended March 31, 2024 and 2023 was approximately $4.5 million and $1.5 million, respectively.

Stock Options and Stock Appreciation Rights

The following is a summary of stock options and SARs activity under the 2023 Inducement Plan, 2015 Plan, and 2005

Plan for the three months ended March 31, 2024:


	2023 Inducement Plan			2015 Plan			2005 Plan
	Stock Options	Weighted-Average Exercise Price		Stock Options	Weighted-Average Exercise Price		Stock Options	Weighted-Average Exercise Price
Outstanding at December 31, 2023	422,800	$	10.67	4,787,042	$	38.10	58,275	$	119.79
Granted	—	—		594,367	5.39		—	—
Exercised	—	—		(142)	5.22		—	—
Canceled	—	—		(284,823)	37.60		(57,569)	120.01
Outstanding at March 31, 2024	422,800	$	10.67	5,096,444	$	34.31	706	$	102.11
Shares exercisable at March 31, 2024	101,762	$	11.08	3,411,898	$	41.21	706	$	102.11

The fair value of stock options granted under the 2023 Inducement Plan and the 2015 Plan was estimated at the date of grant using the Black-Scholes option-pricing model with the following assumptions:


	Three Months Ended March 31,
	2024	2023
Weighted average Black-Scholes fair value of stock options granted

SEC Form 10-Q filed by Novavax Inc.