<SUBMISSION>
<ACCESSION-NUMBER>0001170961-07-000050
<TYPE>3
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20070702
<FILING-DATE>20070703
<DATE-OF-FILING-DATE-CHANGE>20070703
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>NOVAVAX INC
<CIK>0001000694
<ASSIGNED-SIC>2836
<IRS-NUMBER>222816046
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>508 LAPP ROAD
<CITY>MALVERN
<STATE>PA
<ZIP>19355
<PHONE>4849131200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>508 LAPP ROAD
<CITY>MALVERN
<STATE>PA
<ZIP>19355
</MAIL-ADDRESS>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Stigliano Len F
<CIK>0001405462
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>3
<ACT>34
<FILE-NUMBER>000-26770
<FILM-NUMBER>07961312
</FILING-VALUES>
<BUSINESS-ADDRESS>
<PHONE>2402682028
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>9920 BELWARD CAMPUS DRIVE
<CITY>ROCKVILLE
<STATE>MD
<ZIP>20850
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2007-07-02</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001000694</issuerCik>
        <issuerName>NOVAVAX INC</issuerName>
        <issuerTradingSymbol>NVAX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001405462</rptOwnerCik>
            <rptOwnerName>Stigliano Len F</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O NOVAVAX, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>9920 BELWARD CAMPUS DRIVE</rptOwnerStreet2>
            <rptOwnerCity>ROCKVILLE</rptOwnerCity>
            <rptOwnerState>MD</rptOwnerState>
            <rptOwnerZipCode>20850</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP, CFO and Treasurer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>/s/ Len Stigliano</signatureName>
        <signatureDate>2007-07-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
