    <SEC-DOCUMENT>0001104659-16-153723-index.html : 20161101
    <SEC-HEADER>0001104659-16-153723.hdr.sgml : 20161101
    <ACCEPTANCE-DATETIME>20161101160717
    ACCESSION NUMBER:		0001104659-16-153723
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		9
    CONFORMED PERIOD OF REPORT:	20161101
    ITEM INFORMATION:		Entry into a Material Definitive Agreement
    ITEM INFORMATION:		Unregistered Sales of Equity Securities
    ITEM INFORMATION:		Other Events
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20161101
    DATE AS OF CHANGE:		20161101

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Celldex Therapeutics, Inc.
    		CENTRAL INDEX KEY:			0000744218
    		STANDARD INDUSTRIAL CLASSIFICATION:	IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835]
    		IRS NUMBER:				133191702
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-15006
    		FILM NUMBER:		161964829

    	BUSINESS ADDRESS:
    		STREET 1:		53 FRONTAGE ROAD
    		STREET 2:		SUITE 220
    		CITY:			HAMPTON
    		STATE:			NJ
    		ZIP:			08827
    		BUSINESS PHONE:		908-200-7500

    	MAIL ADDRESS:
    		STREET 1:		53 FRONTAGE ROAD
    		STREET 2:		SUITE 220
    		CITY:			HAMPTON
    		STATE:			NJ
    		ZIP:			08827

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	AVANT IMMUNOTHERAPEUTICS INC
    		DATE OF NAME CHANGE:	19980828

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	T CELL SCIENCES INC
    		DATE OF NAME CHANGE:	19920703
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>a16-20866_18k.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: a16-20866_18k.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-2.1
    <SEQUENCE>2
    <FILENAME>a16-20866_1ex2d1.htm
    <DESCRIPTION>EX-2.1
    <TEXT>
    Document 2 - file: a16-20866_1ex2d1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>3
    <FILENAME>a16-20866_1ex99d1.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 3 - file: a16-20866_1ex99d1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>g208661kg31i001.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: g208661kg31i001.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>g208661kg31i002.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: g208661kg31i002.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>g208661kg31i003.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: g208661kg31i003.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g208661kg31i004.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: g208661kg31i004.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>g208661kg29i001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g208661kg29i001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>g208661mmi001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: g208661mmi001.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>