<SEC-DOCUMENT>0001144204-17-021330.txt : 20170420
<SEC-HEADER>0001144204-17-021330.hdr.sgml : 20170420
<ACCEPTANCE-DATETIME>20170420180139
ACCESSION NUMBER:		0001144204-17-021330
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170418
FILED AS OF DATE:		20170420
DATE AS OF CHANGE:		20170420

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:		3301 AGRICULTURE DRIVE
		CITY:			MADISON
		STATE:			WI
		ZIP:			53716
		BUSINESS PHONE:		617-244-1616

	MAIL ADDRESS:	
		STREET 1:		3301 AGRICULTURE DRIVE
		CITY:			MADISON
		STATE:			WI
		ZIP:			53716

	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

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:		17773795

	MAIL ADDRESS:	
		STREET 1:		C/O RIB-X PHARMACEUTICALS, INC.
		STREET 2:		300 GEORGE STREET, SUITE 301
		CITY:			NEW HAVEN
		STATE:			CT
		ZIP:			06511
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>v464725_form4.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-04-18</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>3301 AGRICULTURE DRIVE</rptOwnerStreet2>
            <rptOwnerCity>MADISON</rptOwnerCity>
            <rptOwnerState>WI</rptOwnerState>
            <rptOwnerZipCode>53716</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Sr. VP of Corp Dev &amp; Ops</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-04-18</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>80000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>80000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Common stock grant that vests in equal annual increments on March 2, 2018, March 2, 2019, and March 2, 2020.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Chad J. Kolean, attorney-in-fact for Jarrod Longcor</signatureName>
        <signatureDate>2017-04-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
