<SEC-DOCUMENT>0001209191-21-054286.txt : 20210901
<SEC-HEADER>0001209191-21-054286.hdr.sgml : 20210901
<ACCEPTANCE-DATETIME>20210901172331
ACCESSION NUMBER:		0001209191-21-054286
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210831
FILED AS OF DATE:		20210901
DATE AS OF CHANGE:		20210901

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Glenn Gregory M
		CENTRAL INDEX KEY:			0001342823

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26770
		FILM NUMBER:		211231096

	MAIL ADDRESS:	
		STREET 1:		20 FIRSTFIELD ROAD, #250
		CITY:			GAITHERSBURG
		STATE:			MD
		ZIP:			20878

ISSUER:		

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

	BUSINESS ADDRESS:	
		STREET 1:		21 FIRSTFIELD ROAD
		CITY:			GAITHERSBURG
		STATE:			MD
		ZIP:			20878
		BUSINESS PHONE:		240-268-2000

	MAIL ADDRESS:	
		STREET 1:		21 FIRSTFIELD ROAD
		CITY:			GAITHERSBURG
		STATE:			MD
		ZIP:			20878
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>FORM 4 SUBMISSION
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        <issuerCik>0001000694</issuerCik>
        <issuerName>NOVAVAX INC</issuerName>
        <issuerTradingSymbol>NVAX</issuerTradingSymbol>
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            <rptOwnerName>Glenn Gregory M</rptOwnerName>
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            <rptOwnerStreet1>C/O NOVAVAX, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>21 FIRSTFIELD ROAD</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>President, R&amp;D</officerTitle>
        </reportingOwnerRelationship>
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            <transactionDate>
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                <transactionShares>
                    <value>175</value>
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                <transactionPricePerShare>
                    <value>240.5834</value>
                    <footnoteId id="F6"/>
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                    <value>D</value>
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                <sharesOwnedFollowingTransaction>
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            <transactionDate>
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                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>209</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>241.5874</value>
                    <footnoteId id="F7"/>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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                <transactionPricePerShare>
                    <value>242.6265</value>
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            <securityTitle>
                <value>Common Stock</value>
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            <transactionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
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                <footnoteId id="F1"/>
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                <value></value>
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                <transactionShares>
                    <value>62</value>
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                <transactionPricePerShare>
                    <value>244.025</value>
                    <footnoteId id="F9"/>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>4061</value>
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    <footnotes>
        <footnote id="F1">The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.</footnote>
        <footnote id="F2">The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $234.51 to $235.00, inclusive. The reporting person undertakes to provide to Novavax, Inc., any security holder of Novavax, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.</footnote>
        <footnote id="F3">The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $236.65 to $237.44, inclusive. The reporting person undertakes to provide to Novavax, Inc., any security holder of Novavax, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.</footnote>
        <footnote id="F4">The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $238.08 to $239.00, inclusive. The reporting person undertakes to provide to Novavax, Inc., any security holder of Novavax, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.</footnote>
        <footnote id="F5">The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $239.12 to $239.90, inclusive. The reporting person undertakes to provide to Novavax, Inc., any security holder of Novavax, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.</footnote>
        <footnote id="F6">The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $240.18 to $241.10, inclusive. The reporting person undertakes to provide to Novavax, Inc., any security holder of Novavax, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.</footnote>
        <footnote id="F7">The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $241.22 to $242.04, inclusive. The reporting person undertakes to provide to Novavax, Inc., any security holder of Novavax, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.</footnote>
        <footnote id="F8">The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $242.29 to $243.02, inclusive. The reporting person undertakes to provide to Novavax, Inc., any security holder of Novavax, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.</footnote>
        <footnote id="F9">The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $243.83 to $244.22, inclusive. The reporting person undertakes to provide to Novavax, Inc., any security holder of Novavax, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ John A. Herrmann III, Attorney-in-Fact</signatureName>
        <signatureDate>2021-09-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</DOCUMENT>
</SEC-DOCUMENT>
