<SEC-DOCUMENT>0001209191-19-039762-index.html : 20190701
<SEC-HEADER>0001209191-19-039762.hdr.sgml : 20190701
<ACCEPTANCE-DATETIME>20190701165845
ACCESSION NUMBER:		0001209191-19-039762
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20190627
FILED AS OF DATE:		20190701
DATE AS OF CHANGE:		20190701

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Baynes Roy D.
		CENTRAL INDEX KEY:			0001680739

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36548
		FILM NUMBER:		19933906

	MAIL ADDRESS:	
		STREET 1:		C/O RETROPHIN, INC.
		STREET 2:		12255 EL CAMINO REAL, SUITE 250
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92130

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Atara Biotherapeutics, Inc.
		CENTRAL INDEX KEY:			0001604464
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				460920988
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		611 GATEWAY BLVD
		STREET 2:		SUITE 900
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080
		BUSINESS PHONE:		650-278-8930

	MAIL ADDRESS:	
		STREET 1:		611 GATEWAY BLVD
		STREET 2:		SUITE 900
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
Document 1 - file: doc4.html

Document 1 - RAW XML: doc4.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.4_862736
<SEQUENCE>2
<FILENAME>poa.txt
<DESCRIPTION>POA DOCUMENT
<TEXT>
Document 2 - file: poa.txt

</DOCUMENT>
</SEC-DOCUMENT>