<SEC-DOCUMENT>0001564590-19-017589-index.html : 20190509
<SEC-HEADER>0001564590-19-017589.hdr.sgml : 20190509
<ACCEPTANCE-DATETIME>20190509081029
ACCESSION NUMBER:		0001564590-19-017589
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20190509
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20190509
DATE AS OF CHANGE:		20190509

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:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36548
		FILM NUMBER:		19808875

	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>8-K
<SEQUENCE>1
<FILENAME>atra-8k_20190509.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: atra-8k_20190509.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>atra-ex991_6.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: atra-ex991_6.htm

</DOCUMENT>
</SEC-DOCUMENT>