    <SEC-DOCUMENT>0000950170-25-057134-index.html : 20250423
    <SEC-HEADER>0000950170-25-057134.hdr.sgml : 20250423
    <ACCEPTANCE-DATETIME>20250423123632
    ACCESSION NUMBER:		0000950170-25-057134
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20250423
    DATE AS OF CHANGE:		20250423

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CERUS CORP
    		CENTRAL INDEX KEY:			0001020214
    		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
    		ORGANIZATION NAME:           	08 Industrial Applications and Services
    		EIN:				680262011
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-21937
    		FILM NUMBER:		25860349

    	BUSINESS ADDRESS:
    		STREET 1:		1220 CONCORD AVENUE
    		STREET 2:		SUITE 600
    		CITY:			CONCORD
    		STATE:			CA
    		ZIP:			94520
    		BUSINESS PHONE:		9252886000

    	MAIL ADDRESS:
    		STREET 1:		1220 CONCORD AVENUE
    		STREET 2:		SUITE 600
    		CITY:			CONCORD
    		STATE:			CA
    		ZIP:			94520

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	CERUS TECHNOLOGIES INC
    		DATE OF NAME CHANGE:	19960731
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>defa14a-2025.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: defa14a-2025.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>img197495756_0.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: img197495756_0.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>img197495756_1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: img197495756_1.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>