Atara Biotherapeutics Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

DB:AT20 Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
22 May 24	Buy€5,880,792	Adamantem Capital	Company	322,636.92	€18.23
16 May 24	Sell€14,617	Jill Henrich	Individual	1,030	€14.19
16 May 24	Sell€16,262	Eric Hyllengren	Individual	1,145.92	€14.19
16 May 24	Sell€24,351	Anhco Nguyen	Individual	1,715.96	€14.19
16 May 24	Sell€18,392	K. Murugan	Individual	1,296.04	€14.19
16 May 24	Sell€46,266	Pascal Touchon	Individual	3,260.24	€14.19
04 Mar 24	Sell€2,571	Jill Henrich	Individual	155.16	€16.57
04 Mar 24	Sell€16,469	Pascal Touchon	Individual	993.76	€16.57
04 Mar 24	Sell€4,429	Eric Hyllengren	Individual	267.16	€16.60
04 Mar 24	Sell€6,658	K. Murugan	Individual	401.76	€16.57
04 Mar 24	Sell€7,124	Anhco Nguyen	Individual	429.84	€16.57
16 Nov 23	Sell€1,170	Jill Henrich	Individual	130.68	€8.95
16 Nov 23	Sell€4,282	Eric Hyllengren	Individual	478.32	€8.95
16 Nov 23	Sell€2,975	K. Murugan	Individual	332.28	€8.95
16 Nov 23	Sell€7,309	Pascal Touchon	Individual	816.36	€8.95
16 Nov 23	Sell€4,400	Manher Joshi	Individual	491.48	€8.95
16 Nov 23	Sell€3,171	Anhco Nguyen	Individual	354.24	€8.95
14 Nov 23	Buy€62,853	Carol Gallagher	Individual	10,800	€7.14
10 Nov 23	Buy€23,739	William Heiden	Individual	4,000	€5.93
10 Nov 23	Buy€94,976	Eric Dobmeier	Individual	17,873	€5.31
16 Aug 23	Sell€5,071	Jill Henrich	Individual	133.84	€37.91
16 Aug 23	Sell€10,566	Manher Joshi	Individual	279	€37.88
16 Aug 23	Sell€13,136	K. Murugan	Individual	346.88	€37.88
16 Aug 23	Sell€22,915	Anhco Nguyen	Individual	605.04	€37.88
16 Aug 23	Sell€46,600	Pascal Touchon	Individual	1,230.64	€37.88
16 Aug 23	Sell€12,400	Eric Hyllengren	Individual	327.44	€37.91

Insider Trading Volume

Insider Buying: AT20 insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of AT20?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	236	0.0049%
Individual Insiders	104,361	2.17%
VC/PE Firms	322,637	6.7%
General Public	934,032	19.4%
Hedge Funds	1,037,695	21.5%
Institutions	2,417,684	50.2%

Dilution of Shares: Shareholders have been diluted in the past year, with total shares outstanding growing by 22.9%.

Top Shareholders

Top 25 shareholders own 73.2% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
8.44%	EcoR1 Capital, LLC	406,681	€2.9m	0.99%	0.1%
7.69%	Redmile Group, LLC	370,532	€2.6m	-10.1%	0.14%
6.7%	Adamantem Capital	322,637	€2.3m	0%	no data
5.67%	BlackRock, Inc.	273,259	€1.9m	-3.61%	no data
5.46%	Bank of America Corporation, Asset Management Arm	263,212	€1.9m	3,380%	no data
5.41%	Citadel Advisors LLC	260,482	€1.9m	2,380%	no data
4.16%	The Vanguard Group, Inc.	200,517	€1.4m	-25%	no data
4.12%	T. Rowe Price Group, Inc.	198,326	€1.4m	8,920%	no data
3.45%	Tavistock Life Sciences	166,000	€1.2m	0%	0.07%
2.33%	Vestal Point Capital, LP	112,000	€798.6k	0%	0.08%
2.19%	Acadian Asset Management LLC	105,547	€752.6k	49.5%	no data
2.18%	AQR Capital Management, LLC	104,904	€748.0k	-10.5%	no data
2.07%	State Street Global Advisors, Inc.	99,561	€709.9k	-10.6%	no data
1.79%	Geode Capital Management, LLC	86,343	€615.6k	0.39%	no data
1.56%	Tang Capital Management, LLC	75,196	€536.2k	0%	0.08%
1.56%	Kleiner Perkins Caufield & Byers	75,066	€535.2k	0%	0.13%
1.47%	Woodline Partners LP	70,992	€506.2k	0%	0.01%
1.12%	Morgan Stanley, Investment Banking and Brokerage Investments	53,730	€383.1k	-24.5%	no data
1.01%	JP Morgan Asset Management	48,547	€346.1k	-40.1%	no data
0.91%	Medical Strategy GmbH, Asset Management Arm	43,888	€312.9k	0%	0.02%
0.83%	Staley Capital Advisers, Inc.	40,000	€285.2k	0%	0.02%
0.82%	J. Goldman & Co., L.P.	39,466	€281.4k	0%	0.02%
0.81%	Renaissance Technologies LLC	39,215	€279.6k	57.4%	no data
0.74%	Checkpoint Capital, LLC, Asset Management Arm	35,714	€254.6k	0%	0.21%
0.71%	Northern Trust Global Investments	34,032	€242.7k	0.64%	no data