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Atara Biotherapeutics (ATRA) Insider Trading & Ownership

Atara Biotherapeutics logo
$9.80 0.00 (0.00%)
As of 05/22/2026 04:00 PM Eastern
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Atara Biotherapeutics (NASDAQ:ATRA) Insider Buying and Selling Activity

Current
Insider Ownership
Percentage
41.20%
Number Of
Insiders Buying
(Last 12 Months)
1
Amount Of
Insider Buying
(Last 12 Months)
$856.84K
Number Of
Insiders Selling
(Last 12 Months)
3
Amount Of
Insider Selling
(Last 12 Months)
$3.81M
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ATRA Insider Buying and Selling by Quarter

Atara Biotherapeutics Insider and Congressional Trades History

Export
Transaction DateInsiderBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails
5/18/2026
Anhco Nguyen
CEO
Sell5,241$9.13$47,850.33  
5/18/2026
Yanina Grant-Huerta
CAO
Sell2,414$9.13$22,039.82  
5/7/2026
Innovation Ltd Panacea
Major Shareholder
Sell313,446$10.10$3,165,804.60  
1/12/2026
Innovation Ltd Panacea
Major Shareholder
Sell80,554$6.07$488,962.78  
11/17/2025
Anhco Nguyen
CEO
Sell2,915$13.19$38,448.85  
11/17/2025
Yanina Grant-Huerta
CAO
Sell1,804$13.19$23,794.76  
11/17/2025
Yanina Grant-Huerta
CAO
Sell1,804$13.19$23,794.76  
8/15/2025
Innovation Ltd Panacea
Major Shareholder
Buy55,000$12.19$670,450.00  
7/17/2025
Innovation Ltd Panacea
Major Shareholder
Buy19,335$9.64$186,389.40  
(Data available from 1/1/2013 forward)

ATRA Insider Trading Activity - Frequently Asked Questions

The list of insiders at Atara Biotherapeutics includes Amar Murugan, Anhco Nguyen, Carol Giltner Gallagher, Eric J Hyllengren, Innovation Ltd Panacea, Jill Henrich, Pascal Touchon, William K Heiden, and Yanina Grant-Huerta. Learn more on insiders at ATRA.

41.20% of Atara Biotherapeutics stock is owned by insiders. Learn more on ATRA's insider holdings.

The following insider purchased ATRA shares in the last 24 months: Innovation Ltd Panacea ($856,839.40).

Insiders have purchased a total of 74,335 ATRA shares in the last 24 months for a total of $856,839.40 bought.

The following insiders have sold ATRA shares in the last 24 months: Anhco Nguyen ($162,471.97), Eric J Hyllengren ($30,847.90), Innovation Ltd Panacea ($3,654,767.38), Jill Henrich ($18,613.00), Pascal Touchon ($20,141.94), and Yanina Grant-Huerta ($84,623.02).

Insiders have sold a total of 429,230 Atara Biotherapeutics shares in the last 24 months for a total of $3,971,465.21 sold.

Atara Biotherapeutics Active Insiders


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This page (NASDAQ:ATRA) was last updated on 5/26/2026 by MarketBeat.com Staff.
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