<SEC-DOCUMENT>0001144204-12-049608.txt : 20120905
<SEC-HEADER>0001144204-12-049608.hdr.sgml : 20120905
<ACCEPTANCE-DATETIME>20120905115734
ACCESSION NUMBER:		0001144204-12-049608
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20120904
FILED AS OF DATE:		20120905
DATE AS OF CHANGE:		20120905

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Chan Phillip P.
		CENTRAL INDEX KEY:			0001442786

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-51038
		FILM NUMBER:		121072939

	MAIL ADDRESS:	
		STREET 1:		1001 BRIGGS ROAD
		STREET 2:		SUITE 280
		CITY:			MOUNT LAUREL
		STATE:			NJ
		ZIP:			08054

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Cytosorbents Corp
		CENTRAL INDEX KEY:			0001175151
		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
		IRS NUMBER:				980373793
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		7 DEER PARK DRIVE, SUITE K
		CITY:			MONMOUTH JUNCTION
		STATE:			NJ
		ZIP:			08852
		BUSINESS PHONE:		973-329-8885

	MAIL ADDRESS:	
		STREET 1:		7 DEER PARK DRIVE, SUITE K
		CITY:			MONMOUTH JUNCTION
		STATE:			NJ
		ZIP:			08852

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MedaSorb Technologies CORP
		DATE OF NAME CHANGE:	20060807

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GILDER ENTERPRISES INC
		DATE OF NAME CHANGE:	20020611
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>v323040_form4.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2012-09-04</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001175151</issuerCik>
        <issuerName>Cytosorbents Corp</issuerName>
        <issuerTradingSymbol>CTSO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001442786</rptOwnerCik>
            <rptOwnerName>Chan Phillip P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CYTOSORBENTS CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>7 DEER PARK DRIVE, SUITE K</rptOwnerStreet2>
            <rptOwnerCity>MONMOUTH JUNCTION</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08852</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CEO &amp; President</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.001 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2012-09-04</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>190000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.13</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>190000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ Phillip Chan</signatureName>
        <signatureDate>2012-09-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
