Investor Relations

Eric Hyllengren
Chief Financial Officer
T: (805) 395-9669
ehyllengren@atarabio.com

Media

Alex Chapman
Vice President, Corporate Communications & Public Affairs
T: (805) 456-4772
achapman@atarabio.com

Transfer Agent

Computershare Trust Company, N.A.
P.O. Box 505000
Louisville, KY 40233
T: (781) 575-2879
web.queries@computershare.com