Ken Griffin Atara Biotherapeutics, Inc. Put Options Transaction History

Citadel Advisors LLC

6 transactions

Quarter	Operation	Price Per put	puts change	puts Held
Q1 2024 May 15, 2024	BUY	$0.44 - $1.22 $22,484 - $62,342	51,100 Added 25550.0%	51,300 $35,000
Q4 2023 Feb 14, 2024	SELL	$0.23 - $1.74 $10,787 - $81,606	-46,900 Reduced 99.58%	200 $0
Q3 2023 Nov 14, 2023	BUY	$1.41 - $2.31 $47,235 - $77,385	33,500 Added 246.32%	47,100 $69,000
Q2 2023 Aug 14, 2023	BUY	$1.5 - $3.04 $11,850 - $24,016	7,900 Added 138.6%	13,600 $21,000
Q1 2023 May 15, 2023	SELL	$2.8 - $5.46 $3,080 - $6,006	-1,100 Reduced 16.18%	5,700 $16,000

Q4 2022 Feb 14, 2023	BUY	$2.85 - $5.18 $19,380 - $35,224	6,800 New	6,800 $22,000

85M

18.4K

51.3K

Ticker ATRA
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Shares Outstandng 94,362,304
Market Cap $710M
Description
Atara Biotherapeutics, Inc., an off-the-shelf T-cell immunotherapy company, develops treatments for patients with cancer, autoimmune, and viral diseases in the United States. It is developing tabelecleucel, a T-cell immunotherapy that is Phase 3 clinical trials for the treatment of epstein-barr virus (EBV) driven post-transplant lymphoproliferat...

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