<SEC-DOCUMENT>0001564590-16-017048-index.html : 20160429
<SEC-HEADER>0001564590-16-017048.hdr.sgml : 20160429
<ACCEPTANCE-DATETIME>20160429060159
ACCESSION NUMBER:		0001564590-16-017048
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20160623
FILED AS OF DATE:		20160429
DATE AS OF CHANGE:		20160429
EFFECTIVENESS DATE:		20160429

FILER:

	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

	FILING VALUES:
		FORM TYPE:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36548
		FILM NUMBER:		161602330

	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>DEF 14A
<SEQUENCE>1
<FILENAME>atra-def14a_20160623.htm
<DESCRIPTION>DEF 14A
<TEXT>
Document 1 - file: atra-def14a_20160623.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>gyqkw3i2loeg000004.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: gyqkw3i2loeg000004.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>gyqkw3i2loeg000001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: gyqkw3i2loeg000001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>gyqkw3i2loeg000003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: gyqkw3i2loeg000003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>gyqkw3i2loeg000002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: gyqkw3i2loeg000002.jpg

</DOCUMENT>
</SEC-DOCUMENT>