Atara Biotherapeutics Inc (ATRA)

NASDAQ:ATRA

US Market

ATRA

Atara Biotherapeutics

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Atara Biotherapeutics (ATRA) Ownership - Who Owns Atara Biotherapeutics?

1,207 Followers

Atara Biotherapeutics (ATRA) Ownership Overview

36.00% Insiders

5.47% Mutual Funds

18.18% Other Institutional Investors

2.56% ETFs

37.78% Public Companies and

Individual Investors

The ownership structure of Atara Biotherapeutics (ATRA) stock is a mix of institutional, retail, and individual investors. Approximately 26.21% of the company’s stock is owned by Institutional Investors, 36.00% is owned by Insiders, and 37.78% is owned by Public Companies and Individual Investors.

The ownership structure of Atara Biotherapeutics (ATRA) stock is a mix of institutional, retail, and individual investors. Approximately 23.65% of the company’s stock is owned by Institutional Investors, 36.00% is owned by Insiders, and 2.56% is owned by Public Companies and Individual Investors.

Recent Insider Trading Activity

Date	Name	Activity	Value
May 20, 2026	Yanina Grant Huerta	xxxxxxxxxxxxx	$22016
May 20, 2026	Anhco Nguyen	xxxxxxxxxxxxx	$47798
May 11, 2026	Ecor1 Capital, Llc	xxxxxxxxxxxxx	$4744255
May 11, 2026	Panacea Innovation Limited	xxxxxxxxxxxxx	$3162670

Show More Insider Trading Activity >

Recent Hedge Fund Trading Activity

Date	Firm	Activity	Value

Show More Hedge Fund Trading Activity >

Top Shareholders

Holder	# of Shares	Type	% Holding	Value
	1,552,000	Insider	17.22%	15,939,040
	1,318,894	Insider	14.64%	13,545,041
	217,089	Institution	2.41%	2,229,504
	215,018	Institution	2.39%	2,208,235
	141,924	Institution	1.58%	1,457,559
	137,837	Insider	1.53%	1,415,586
	77,955	Insider	0.87%	800,598
	50,738	Institution	0.56%	521,079
	49,636	Insider	0.55%	509,762
	33,012	Insider	0.37%	339,033

Top Mutual Fund Holders

Holder	# of Shares	Type	% Holding	Value
	215,018	Institution	2.39%	2,208,235
	141,924	Institution	1.58%	1,457,559
	50,738	Institution	0.56%	521,079
	32,691	Institution	0.36%	335,737
	32,012	Institution	0.36%	328,763
	10,318	Institution	0.11%	105,966
	6,101	Institution	0.07%	62,657
	2,844	Institution	0.03%	29,208
	1,643	Institution	0.02%	16,874

Top ETF Holders

Holder	# of Shares	Type	% Holding	Value
Vanguard Total Stock Market ETF	158,646	Institution	1.76%	756,741
Vanguard Extended Market ETF	58,443	Institution	0.65%	278,773
iShares Micro-Cap ETF	10,445	Institution	0.12%	107,270
Dimensional US Core Equity 1 ETF	2,149	Institution	0.02%	20,695
Dimensional U.S. Core Equity 2 ETF	880	Institution	<0.01%	8,474
BMO MSCI Genomic Innovation Index ETF Trust Units	364	Institution	<0.01%	312
Dimensional U.S. Small Cap ETF	135	Institution	<0.01%	1,300
U.S. Micro Cap Portfolio ETF	87	Institution	<0.01%	412

FAQ

Who Owns Atara Biotherapeutics Inc (ATRA)?

According to the latest TipRanks data, approximately 18.18% of the company's stock is held by institutional investors, 36.00% is held by insiders, and 37.78% is held by retail investors.

What percentage of Atara Biotherapeutics Inc (ATRA) stock is held by institutional investors?

According to the latest TipRanks data, approximately 18.18% of Atara Biotherapeutics Inc (ATRA) stock is held by institutional investors.

What percentage of Atara Biotherapeutics Inc (ATRA) stock is held by retail investors?

According to the latest TipRanks data, approximately 37.78% of Atara Biotherapeutics Inc (ATRA) stock is held by retail investors.

Who owns the most shares of Atara Biotherapeutics Inc (ATRA)?

Ecor1 Capital, Llc owns the most shares of Atara Biotherapeutics Inc (ATRA).

What is the significance of the ownership structure for a publicly traded company?

The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.