<SEC-DOCUMENT>0001181431-13-045836.txt : 20130821
<SEC-HEADER>0001181431-13-045836.hdr.sgml : 20130821
<ACCEPTANCE-DATETIME>20130821135443
ACCESSION NUMBER:		0001181431-13-045836
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20130819
FILED AS OF DATE:		20130821
DATE AS OF CHANGE:		20130821

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SUPERNUS PHARMACEUTICALS INC
		CENTRAL INDEX KEY:			0001356576
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE

	BUSINESS ADDRESS:	
		STREET 1:		1550 E GUDE DR
		CITY:			ROCKVILLE
		STATE:			MD
		ZIP:			20850
		BUSINESS PHONE:		301-838-2500

	MAIL ADDRESS:	
		STREET 1:		1550 E GUDE DR
		CITY:			ROCKVILLE
		STATE:			MD
		ZIP:			20850

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Bhatt Padmanabh P.
		CENTRAL INDEX KEY:			0001539215

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35518
		FILM NUMBER:		131052545

	MAIL ADDRESS:	
		STREET 1:		C/O SUPERNUS PHARMACEUTICALS, INC.
		STREET 2:		1550 EAST GUDE DRIVE
		CITY:			ROCKVILLE
		STATE:			MD
		ZIP:			20850
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd388875.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2013-08-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001356576</issuerCik>
        <issuerName>SUPERNUS PHARMACEUTICALS INC</issuerName>
        <issuerTradingSymbol>SUPN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001539215</rptOwnerCik>
            <rptOwnerName>Bhatt Padmanabh P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SUPERNUS PHARMACEUTCALS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1550 EAST GUDE 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>Sr. VP of IP; CSO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2013-08-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2285</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.21</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>51806</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Includes an aggregate of 2,285 shares acquired by the Reporting Person through the Issuer's Employee Stock Purchase Plan subsequent to the date of the Reporting Person's most recent filing on Form 4.</footnote>
        <footnote id="F2">The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 27, 2012.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Gregory S. Patrick, as attorney-in-fact</signatureName>
        <signatureDate>2013-08-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
