    <SEC-DOCUMENT>0000950170-24-049087-index.html : 20240426
    <SEC-HEADER>0000950170-24-049087.hdr.sgml : 20240426
    <ACCEPTANCE-DATETIME>20240426160516
    ACCESSION NUMBER:		0000950170-24-049087
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20231231
    FILED AS OF DATE:		20240426
    DATE AS OF CHANGE:		20240426
    EFFECTIVENESS DATE:		20240426

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			AGENUS INC
    		CENTRAL INDEX KEY:			0001098972
    		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
    		ORGANIZATION NAME:           	03 Life Sciences
    		IRS NUMBER:				061562417
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-29089
    		FILM NUMBER:		24883528

    	BUSINESS ADDRESS:
    		STREET 1:		3 FORBES ROAD
    		CITY:			LEXINGTON
    		STATE:			MA
    		ZIP:			02421
    		BUSINESS PHONE:		781-674-4410

    	MAIL ADDRESS:
    		STREET 1:		3 FORBES ROAD
    		CITY:			LEXINGTON
    		STATE:			MA
    		ZIP:			02421

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	ANTIGENICS INC /DE/
    		DATE OF NAME CHANGE:	19991115
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>ARS
    <SEQUENCE>1
    <FILENAME>agen-ars-2023.pdf
    <DESCRIPTION>ARS
    <TEXT>
    Document 1 - file: agen-ars-2023.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>