Investors

John Craighead, PhD
Vice President, Investor Relations & Corporate Communications
T: (650) 410-3012
jcraighead@atarabio.com

Susanna Chau
Director, Investor Relations
T: 650-491-5796
schau@atarabio.com

Media

Kerry Beth Daly
Head, Corporate Communications
T: (805) 696-2289
kdaly@atarabio.com

Transfer Agent

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