683 Capital Management’s Atara Biotherapeutics ATRA Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2023 Q4	–	Sell	-48,000	Closed	-$1.78M	–	261
2023 Q3	$1.78M	Buy	48,000 +8,000	+20%	+$356K	0.14%	86
2023 Q2	$1.61M	Buy	+40,000	New	+$2.26M	0.12%	99
2022 Q4	–	Sell	-52,000	Closed	-$4.91M	–	311
2022 Q3	$4.91M	Sell	52,000 -29,800	-36%	-$3.35M	0.38%	66
2022 Q2	$15.9M	Buy	81,800 +8,600	+12%	+$1.4M	1.13%	27
2022 Q1	$17M	Buy	73,200 +1,951	+3%	+$621K	0.91%	33
2021 Q4	$28.1M	Hold	71,249	–	–	1.03%	20
2021 Q3	$31.9M	Buy	71,249 +44,142	+163%	+$15.8M	1.24%	20
2021 Q2	$10.5M	Buy	27,107 +18,273	+207%	+$6.52M	0.36%	57
2021 Q1	$3.17M	Hold	8,834	–	–	0.17%	85
2020 Q4	$4.33M	Hold	8,834	–	–	0.21%	75
2020 Q3	$2.86M	Hold	8,834	–	–	0.21%	74
2020 Q2	$3.22M	Buy	+8,834	New	+$2.23M	0.26%	62
2020 Q1	–	Sell	-1,000	Closed	-$412K	–	153
2019 Q4	$412K	Buy	+1,000	New	+$345K	0.05%	85