As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

 2/13/15  Celgene Corp./DE                  SC 13G                 1:23K  Atara Biotherapeutics, Inc.       Donnelley … Solutions/FA 
 2/13/15  Ciechanover Isaac E.              SC 13G                 1:69K  Atara Biotherapeutics, Inc.       Donnelley … Solutions/FA 
          Ciechanover Family Grat³
          Isaac E. Ciechanover & Allison M. Ciechanover Family Trust D³
 2/13/15  FMR LLC                           SC 13G                 1:9K   Atara Biotherapeutics, Inc.                                

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¹	Filing/Form Type:  -Q
	SC 13G	Statement of Acquisition of Beneficial Ownership by a “Passive” Investor — Schedule 13G.
³	Group Member:  A Registrant or non-Registrant party to this Filing made by a Group.