Form 4 for ATRA Atara Biotherapeutics, Inc.

Accepted 2024-08-20 00:00:00 ET · period of report 2024-08-16 · accession 0000905148-24-002304 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
M	2024-08-20	2024-08-16	ATRA	Murugan Amar	EVP, CLO	S - Sale	$6.63	-1,158	26.9K	-4%	-$7,678

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2024-08-16	S	D	877	$6.63	27,108	D	—	—	(F2) The sale price of the reporting person's shares represents the weighted average price of all shares sold by a broker on August 16, 2024 and August 19, 2024 on behalf of a group of employees of the Issuer to satisfy the payment of withholding tax liability of such employees. (F3) This amount includes 4,507 shares purchased under the Issuer's Employee Stock Purchase Plan on May 31, 2024, and reflects the 1:25 reverse stock split effected by the Issuer on June 20, 2024.
2	Common	Common Stock	2024-08-16	S	D	89	$6.63	26,827	D	—	—	(F2) The sale price of the reporting person's shares represents the weighted average price of all shares sold by a broker on August 16, 2024 and August 19, 2024 on behalf of a group of employees of the Issuer to satisfy the payment of withholding tax liability of such employees.
3	Common	Common Stock	2024-08-16	S	D	192	$6.63	26,916	D	—	—	(F2) The sale price of the reporting person's shares represents the weighted average price of all shares sold by a broker on August 16, 2024 and August 19, 2024 on behalf of a group of employees of the Issuer to satisfy the payment of withholding tax liability of such employees.