SEC Form 4/A · accession 0001209191-19-014938

Atara Biotherapeutics, Inc. · ATRA

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

This is an amendment (Form 4/A). It replaces an earlier filing for the same period.

Reporting owner

Director

Period of report

Jun 14, 2018

Accepted (ET)

Mar 1, 2019 · 4:08 pm EST

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0001604464

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1	Jun 14, 2018	A	1,500	$0.00	A	8,500	D
Common Stock	holding	—	—		—	4,000	I	Held by the Joel S. Marcus and Barbara A. Marcus Family Trust
Common Stock^F2	holding	—	—		—	908,355	I	See footnote

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Non-Qualified Stock Option (Right to Buy)^F3	$45.65	Jun 14, 2018	A	5,000	A	—	Jun 13, 2025	Common Stock	5,000	5,000	D

F1These restricted stock units shall vest on June 14, 2019, subject to the Reporting Person's continuous service.
F2Consists of shares of common stock held by Alexandria Equities, LLC. Mr. Marcus is the Chairman, CEO and Founder of Alexandria Real Estate Equities, Inc., which is the managing member of Alexandria Equities, LLC, which has full voting and investment power with respect to the shares owned by Alexandria Equities, LLC. As an officer of Alexandria Real Estate Equities, Inc., Mr. Marcus may be deemed to have voting and investment power with respect to the shares owned by Alexandria Equities, LLC. Mr. Marcus disclaims beneficial ownership of the shares held by Alexandria Equities, LLC, except to the extent of his underlying pecuniary interest therein.
F3The option shall vest on June 14, 2019, subject to the Reporting Person's continuous service.

This amendment is being filed solely to attach the Power of Attorney that was inadvertently omitted at the time of filing.