Home > Insider Trading > Filing (0001209191-19-020276)

Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1604464	Atara Biotherapeutics Inc.	ATRA	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1216955	S Joel Marcus	C/O Alexandria Real Estate Equities, Inc 385 East Colorado Boulevard, Suite 299 Pasadena CA 91101		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2019-03-15	20,000	$38.25	888,355	No	4	S	Indirect	See footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	See footnote

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	4,000	Indirect	Held by the Joel S. Marcus and Barbara A. Marcus Family Trust
Common Stock	7,500	Direct

Footnotes

The price in Column 4 is a weighted average sale price. The prices actually received ranged from $38.10 to $38.56. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
Consists 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.