    <SEC-DOCUMENT>0000939767-19-000090-index.html : 20190405
    <SEC-HEADER>0000939767-19-000090.hdr.sgml : 20190405
    <ACCEPTANCE-DATETIME>20190405161815
    ACCESSION NUMBER:		0000939767-19-000090
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		13
    CONFORMED PERIOD OF REPORT:	20190401
    ITEM INFORMATION:		Entry into a Material Definitive Agreement
    ITEM INFORMATION:		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20190405
    DATE AS OF CHANGE:		20190405

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			EXELIXIS, INC.
    		CENTRAL INDEX KEY:			0000939767
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH [8731]
    		IRS NUMBER:				043257395
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1228

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-30235
    		FILM NUMBER:		19735340

    	BUSINESS ADDRESS:
    		STREET 1:		1851 HARBOR BAY PARKWAY
    		CITY:			ALAMEDA
    		STATE:			CA
    		ZIP:			94502
    		BUSINESS PHONE:		6508377000

    	MAIL ADDRESS:
    		STREET 1:		1851 HARBOR BAY PARKWAY
    		CITY:			ALAMEDA
    		STATE:			CA
    		ZIP:			94502

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	EXELIXIS INC
    		DATE OF NAME CHANGE:	20000207

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	EXELIXIS PHARMACEUTICALS INC
    		DATE OF NAME CHANGE:	20000106
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>form8-k2019leaseamendment.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: form8-k2019leaseamendment.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.1
    <SEQUENCE>2
    <FILENAME>exel20190401exhibit101.htm
    <DESCRIPTION>EXHIBIT 10.1
    <TEXT>
    Document 2 - file: exel20190401exhibit101.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>exhibit101ascentrisimage1a01.jpg
    <TEXT>
    Document 3 - file: exhibit101ascentrisimage1a01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>exhibit101ascentrisimage2a01.jpg
    <TEXT>
    Document 4 - file: exhibit101ascentrisimage2a01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>exhibit101ascentrisimage3a01.jpg
    <TEXT>
    Document 5 - file: exhibit101ascentrisimage3a01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>exhibit101ascentrisimage4a01.jpg
    <TEXT>
    Document 6 - file: exhibit101ascentrisimage4a01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>exhibit101ascentrisimage5a01.jpg
    <TEXT>
    Document 7 - file: exhibit101ascentrisimage5a01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>exhibit101ascentrisimage6a01.jpg
    <TEXT>
    Document 8 - file: exhibit101ascentrisimage6a01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>exhibit101ascentrisimage7a01.jpg
    <TEXT>
    Document 9 - file: exhibit101ascentrisimage7a01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>exhibit101ascentrisimage9.jpg
    <TEXT>
    Document 10 - file: exhibit101ascentrisimage9.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>exhibit101ascentrisimage10.jpg
    <TEXT>
    Document 11 - file: exhibit101ascentrisimage10.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>exhibit101ascentrislimage8.jpg
    <TEXT>
    Document 12 - file: exhibit101ascentrislimage8.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>image0a09.jpg
    <TEXT>
    Document 13 - file: image0a09.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>