Atara Biotherapeutics, Inc. - Common Stock (ATRA)

Q4 2025 13F Holders as of 31 Dec 2025

Type / Class
Equity / Common Stock
Shares outstanding
7,230,838
Total 13F shares
2,049,655
Share change
+166,547
Total reported value
$37,062,796
Price per share
$18.09
Number of holders
40
Value change
+$3,113,209
Number of buys
19
Number of sells
9

Institutional Holders of Atara Biotherapeutics, Inc. - Common Stock (ATRA) as of Q4 2025

As of 31 Dec 2025, Atara Biotherapeutics, Inc. - Common Stock (ATRA) was held by 40 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 2,049,655 shares. The largest 10 holders included EcoR1 Capital, LLC, Redmile Group, LLC, VANGUARD GROUP INC, MARSHALL WACE, LLP, GLOBEFLEX CAPITAL L P, BlackRock, Inc., GEODE CAPITAL MANAGEMENT, LLC, MACKENZIE FINANCIAL CORP, ACADIAN ASSET MANAGEMENT LLC, and STALEY CAPITAL ADVISERS INC. This page lists 40 institutional shareholders reporting positions in this security for the Q4 2025 filing period.
Investor Option Weight % Change % Value $ * Price Shares Share Change Activity Report Period
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.