<SEC-DOCUMENT>0001104659-15-017790-index.html : 20150306
<SEC-HEADER>0001104659-15-017790.hdr.sgml : 20150306
<ACCEPTANCE-DATETIME>20150306171646
ACCESSION NUMBER:		0001104659-15-017790
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20150306
DATE AS OF CHANGE:		20150306

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CERUS CORP
		CENTRAL INDEX KEY:			0001020214
		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
		IRS NUMBER:				680262011
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-51875
		FILM NUMBER:		15682596

	BUSINESS ADDRESS:	
		STREET 1:		2550 STANWELL DRIVE
		CITY:			CONCORD
		STATE:			CA
		ZIP:			94520
		BUSINESS PHONE:		9252886000

	MAIL ADDRESS:	
		STREET 1:		2550 STANWELL DRIVE
		STREET 2:		STE 300
		CITY:			CONCORD
		STATE:			CA
		ZIP:			94520

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CERUS TECHNOLOGIES INC
		DATE OF NAME CHANGE:	19960731

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PRIMECAP MANAGEMENT CO/CA/
		CENTRAL INDEX KEY:			0000763212
		IRS NUMBER:				953868081

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		225 SOUTH LAKE AVE STE 400
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91101-3005
		BUSINESS PHONE:		8183049222

	MAIL ADDRESS:	
		STREET 1:		225 SOUTH LAKE AVE SUITE 400
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91101
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>a15-6092_1sc13g.htm
<DESCRIPTION>SC 13G
<TEXT>
Document 1 - file: a15-6092_1sc13g.htm

</DOCUMENT>
</SEC-DOCUMENT>