<SEC-DOCUMENT>0001567619-21-018044-index.html : 20211007
<SEC-HEADER>0001567619-21-018044.hdr.sgml : 20211007
<ACCEPTANCE-DATETIME>20211007171150
ACCESSION NUMBER:		0001567619-21-018044
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20210929
FILED AS OF DATE:		20211007
DATE AS OF CHANGE:		20211007

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Ashworth Alan
		CENTRAL INDEX KEY:			0001886426

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37587
		FILM NUMBER:		211313060

	MAIL ADDRESS:	
		STREET 1:		C/O CYTOMX THERAPEUTICS, INC.
		STREET 2:		151 OYSTER POINT BLVD., STE. 400
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CytomX Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001501989
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				273521219
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		151 OYSTER POINT BLVD.
		STREET 2:		SUITE 400
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080
		BUSINESS PHONE:		650.515.3185

	MAIL ADDRESS:	
		STREET 1:		151 OYSTER POINT BLVD.
		STREET 2:		SUITE 400
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 3
<TEXT>
Document 1 - file: doc1.html

Document 1 - RAW XML: doc1.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.1
<SEQUENCE>2
<FILENAME>alanashworthpoa.htm
<DESCRIPTION>POWER OF ATTORNEY
<TEXT>
Document 2 - file: alanashworthpoa.htm

</DOCUMENT>
</SEC-DOCUMENT>