<SEC-DOCUMENT>0001103804-18-000012-index.html : 20180214
<SEC-HEADER>0001103804-18-000012.hdr.sgml : 20180214
<ACCEPTANCE-DATETIME>20180214152833
ACCESSION NUMBER:		0001103804-18-000012
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20180214
DATE AS OF CHANGE:		20180214

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Calithera Biosciences, Inc.
		CENTRAL INDEX KEY:			0001496671
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				272366329
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-88349
		FILM NUMBER:		18611732

	BUSINESS ADDRESS:	
		STREET 1:		343 OYSTER POINT BLVD #200
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080
		BUSINESS PHONE:		650-870-1000

	MAIL ADDRESS:	
		STREET 1:		343 OYSTER POINT BLVD #200
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			VIKING GLOBAL INVESTORS LP
		CENTRAL INDEX KEY:			0001103804
		IRS NUMBER:				134055118
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		55 RAILROAD AVENUE
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
		BUSINESS PHONE:		203-863-5062

	MAIL ADDRESS:	
		STREET 1:		55 RAILROAD AVENUE
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>v13ga2Calithera.txt
<TEXT>
Document 1 - file: v13ga2Calithera.txt

</DOCUMENT>
</SEC-DOCUMENT>