<SEC-DOCUMENT>0001144204-19-002090.txt : 20190118
<SEC-HEADER>0001144204-19-002090.hdr.sgml : 20190118
<ACCEPTANCE-DATETIME>20190118161819
ACCESSION NUMBER:		0001144204-19-002090
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190117
FILED AS OF DATE:		20190118
DATE AS OF CHANGE:		20190118

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Longcor Jarrod
		CENTRAL INDEX KEY:			0001545565

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36598
		FILM NUMBER:		19533420

	MAIL ADDRESS:	
		STREET 1:		C/O RIB-X PHARMACEUTICALS, INC.
		STREET 2:		300 GEORGE STREET, SUITE 301
		CITY:			NEW HAVEN
		STATE:			CT
		ZIP:			06511

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Cellectar Biosciences, Inc.
		CENTRAL INDEX KEY:			0001279704
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				043321804
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		100 CAMPUS DRIVE
		CITY:			FLORHAM PARK
		STATE:			NJ
		ZIP:			07932
		BUSINESS PHONE:		(608) 441-8120

	MAIL ADDRESS:	
		STREET 1:		100 CAMPUS DRIVE
		CITY:			FLORHAM PARK
		STATE:			NJ
		ZIP:			07932

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NOVELOS THERAPEUTICS, INC.
		DATE OF NAME CHANGE:	20050617

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COMMON HORIZONS INC
		DATE OF NAME CHANGE:	20040211
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>tv511259_4.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2019-01-17</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001279704</issuerCik>
        <issuerName>Cellectar Biosciences, Inc.</issuerName>
        <issuerTradingSymbol>CLRB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001545565</rptOwnerCik>
            <rptOwnerName>Longcor Jarrod</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CELLECTAR BIOSCIENCES, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>100 CAMPUS DRIVE</rptOwnerStreet2>
            <rptOwnerCity>FLORHAM</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07932</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Business Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1.99</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2019-01-17</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>30000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2029-01-17</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>30000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>30000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">This option grant is a contingent grant subject to the following conditions: (i) approval by Cellectar's stockholders of an increase in shares available under the Amended and Restated 2015 Stock Incentive Plan at the Corporation's 2019 annual meeting of stockholders or other special meeting of stockholders called for such purpose; and (ii) to the extent stockholder approval is received, the grant shall vest over a period of three years from the grant date, with 1/3 vesting on the first anniversary of the grant date and the remainder vesting in 24 equal monthly installments over a 24 month period beginning on the first anniversary of the grant date.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Christina Blakley, attorney-in-fact for Jarrod Longcor</signatureName>
        <signatureDate>2019-01-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
