<SEC-DOCUMENT>0001960596-25-000006.txt : 20251112
<SEC-HEADER>0001960596-25-000006.hdr.sgml : 20251112
<ACCEPTANCE-DATETIME>20251112160500
ACCESSION NUMBER:		0001960596-25-000006
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20251110
FILED AS OF DATE:		20251112
DATE AS OF CHANGE:		20251112

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Lawver Teri L
		CENTRAL INDEX KEY:			0001960596
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-15006
		FILM NUMBER:		251472573

	MAIL ADDRESS:	
		STREET 1:		ALTIMMUNE, INC.
		STREET 2:		910 CLOPPER ROAD, SUITE 201S
		CITY:			GAITHERSBURG
		STATE:			MD
		ZIP:			20878

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Celldex Therapeutics, Inc.
		CENTRAL INDEX KEY:			0000744218
		STANDARD INDUSTRIAL CLASSIFICATION:	IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				133191702
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	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>3
<SEQUENCE>1
<FILENAME>form3-11122025_091156.xml
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    <periodOfReport>2025-11-10</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000744218</issuerCik>
        <issuerName>Celldex Therapeutics, Inc.</issuerName>
        <issuerTradingSymbol>CLDX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001960596</rptOwnerCik>
            <rptOwnerName>Lawver Teri L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CELLDEX THERAPEUTICS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>53 FRONTAGE ROAD, SUITE 220</rptOwnerStreet2>
            <rptOwnerCity>HAMPTON</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08827</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>SVP &amp; Chief Commercial Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <ownerSignature>
        <signatureName>/s/ Sam Martin, attorney-in-fact for Teri Lawver</signatureName>
        <signatureDate>2025-11-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>ex24-11122025_091156.htm
<TEXT>
<!DOCTYPE html PUBLIC "-//IETF//DTD HTML//EN">
<html><head><title>ex24-11122025_091156.htm</title></head><body style="margin-top:0;font-family:Times New Roman; font-size:10pt; color:#000000">
<p style="margin:0px; font-size:12pt" align="right"><b>Exhibit 24</b></p>
<p style="margin:0px" align="right"><br></p>
<p style="margin:0px; font-size:12pt" align="center"><b>POWER OF ATTORNEY</b></p>
<p style="margin:0px" align="center"><br></p>
<p style="margin:0px; text-indent:48px; font-size:12pt">Know all by those present, that the undersigned hereby constitutes and appoints each of Sam Martin and Anthony S. Marucci his true and lawful attorney-in-fact to:</p>
<p style="margin:0px"><br></p>
<p style="margin:0px; padding-left:96px; text-indent:-48px; font-size:12pt">1. execute for and on behalf of the undersigned Schedules 13D and 13G, Form ID, and Forms 3, 4 and 5 in accordance with Sections 13 and 16(a) of the Securities Exchange Act of 1934 and the rules thereunder;</p>
<p style="margin:0px"><br></p>
<p style="margin:0px; padding-left:96px; text-indent:-48px; font-size:12pt">2. do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Schedules 13D or 13G, Form ID and Forms 3, 4 or 5, and the timely filing of such Forms with the United States Securities and Exchange Commission and any other authority; and</p>
<p style="margin:0px"><br></p>
<p style="margin:0px; padding-left:96px; text-indent:-48px; font-size:12pt">3. take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, including without limitation the execution and filing of a Form 4 with respect to a transaction which may be reported on a Form 5, it being understood that the documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in his discretion.</p>
<p style="margin:0px"><br></p>
<p style="margin:0px; text-indent:48px; font-size:12pt">The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform all and every act and thing whatsoever requisite, necessary and proper to be done in the exercise of any of the rights and powers herein granted, as fully and to all intents and purposes as he might or could do in person, with full power of substitution and resubstitution, hereby ratifying and confirming all that such attorney-in-fact, or his substitute or substitutes, shall lawfully do or cause to be done by virtue of this Power of Attorney and the rights and powers herein granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming any of the undersigned<font style="font-family:Arial Unicode MS,Times New Roman">&rsquo;</font>s responsibilities to comply with Sections 13 and 16 of the Securities Exchange Act of 1934.</p>
<p style="margin:0px"><br></p>
<p style="margin:0px; font-size:12pt">IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 10<sup>th</sup> day of November, 2025.</p>
<p style="margin:0px"><br></p>
<table style="margin-top:0px; font-size:10pt" cellpadding="0" cellspacing="0" width="100%" align="center"><tr style="font-size:0"><td width="166.667"></td><td width="166.667"></td><td width="99"></td><td width="432.333"></td></tr><tr><td style="margin-top:0px; padding-left:4px; padding-top:0px; padding-right:4px; padding-bottom:0px; border-bottom:1.333px solid #000000" valign="top" width="166.667"><p style="margin:0px; font-size:12pt">/s/ Teri Lawver</p>
</td><td style="margin-top:0px; padding-left:4px; padding-top:0px; padding-right:4px; padding-bottom:0px" valign="top" width="166.667"><p style="margin:0px"><br></p>
</td><td style="margin-top:0px; padding-left:4px; padding-top:0px; padding-right:4px; padding-bottom:0px" valign="top" width="99"><p style="margin:0px">&nbsp;</p></td><td style="margin-top:0px; padding-left:4px; padding-top:0px; padding-right:4px; padding-bottom:0px" valign="top" width="432.333"><p style="margin:0px">&nbsp;</p></td></tr><tr><td style="margin-top:0px; padding-left:4px; padding-top:0px; padding-right:4px; padding-bottom:0px" valign="top" width="432.333" colspan="3"><p style="margin:0px"><br></p>
</td><td style="margin-top:0px; padding-left:4px; padding-top:0px; padding-right:4px; padding-bottom:0px" valign="top" width="432.333"><p style="margin:0px"><br></p>
</td></tr><tr><td style="margin-top:0px; padding-left:4px; padding-top:0px; padding-right:4px; padding-bottom:0px" valign="top" width="432.333" colspan="3"><p style="margin:0px; font-size:12pt">Name: Teri Lawver</p>
</td><td style="margin-top:0px; padding-left:4px; padding-top:0px; padding-right:4px; padding-bottom:0px" width="432.333"><p style="margin:0px"><br></p>
</td></tr></table><p style="margin-top:16px; margin-bottom:0px"><br></p>
<p style="margin-top:16px; margin-bottom:0px"><br><br></p>
</body></html>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
