<SEC-DOCUMENT>0001104659-26-023070.txt : 20260303
<SEC-HEADER>0001104659-26-023070.hdr.sgml : 20260303
<ACCEPTANCE-DATETIME>20260303213410
ACCESSION NUMBER:		0001104659-26-023070
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20260301
FILED AS OF DATE:		20260303
DATE AS OF CHANGE:		20260303

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			O'Hara Elaine
		CENTRAL INDEX KEY:			0001968045
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26770
		FILM NUMBER:		26718640

	MAIL ADDRESS:	
		STREET 1:		333 NORTH WARREN AVENUE
		CITY:			MALVERN
		STATE:			PA
		ZIP:			19355

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NOVAVAX INC
		CENTRAL INDEX KEY:			0001000694
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				222816046
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		21 FIRSTFIELD RD
		CITY:			GAITHERSBURG
		STATE:			MD
		BUSINESS PHONE:		240-268-2000

	MAIL ADDRESS:	
		STREET 1:		21 FIRSTFIELD RD
		CITY:			GAITHERSBURG
		STATE:			MD
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
<FILENAME>tm267953-2_4seq1.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
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    <periodOfReport>2026-03-01</periodOfReport>

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        <issuerName>NOVAVAX INC</issuerName>
        <issuerTradingSymbol>NVAX</issuerTradingSymbol>
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            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>GAITHERSBURG</rptOwnerCity>
            <rptOwnerState>MD</rptOwnerState>
            <rptOwnerZipCode>20878</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP, Chief Strategy Officer</officerTitle>
            <otherText></otherText>
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                <value>2033-03-01</value>
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    <footnotes>
        <footnote id="F1">Represents the number of shares of common stock withheld by the Company to satisfy tax withholding requirements in connection with the RSU vesting.</footnote>
        <footnote id="F2">One-third (1/3) of the RSUs subject to this grant under the Novavax, Inc. Amended and Restated 2015 Stock Incentive Plan, as amended, (the &quot;Plan&quot;) vest on each of the first three (3) anniversaries of March 1, 2023, in each case subject to continued employment through such vesting date.</footnote>
        <footnote id="F3">One-third (1/3) of the RSUs subject to this grant under the Plan vest on each of the first three (3) anniversaries of March 1, 2024, in each case subject to continued employment through such vesting date.</footnote>
        <footnote id="F4">One-third (1/3) of the RSUs subject to this grant under the Plan vest on each of the first three (3) anniversaries of March 2, 2026, in each case subject to continued employment through such vesting date.</footnote>
        <footnote id="F5">One-quarter (1/4) of the shares subject to this option granted under the Plan vest on the first anniversary of March 2, 2026, and the remaining three-quarters (3/4) of the shares vest in equal monthly installments over the following three (3) years, in each case subject to continued employment with the Company through such vesting date.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Mark J. Casey, Attorney-in-Fact</signatureName>
        <signatureDate>2026-03-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
