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Buy ATRA
Atara Biotherapeutics Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be positive at 54.67. In total, the insiders bought 9.54M and sold 448.96K ATRA shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.
Insider Power
|
54.67 |
| ● Buy | 9.54M shares |
| ● Sell | 448.96K shares |
|
50% Buy Activity
Negligible or No Correlation
|
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Nov 17, 2025 Sell |
Grant-huerta Yanina Chief Accounting Officer |
85 Value: $1K |
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|
Nov 17, 2025 Sell |
Grant-huerta Yanina Chief Accounting Officer |
74 Value: $976 |
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|
Aug 18, 2025 Sell |
Nguyen Anhco President And CEO |
57 Value: $662 |
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Aug 18, 2025 Sell |
Nguyen Anhco President And CEO |
1 281 Value: $14.9K |
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|
Aug 18, 2025 Sell |
Nguyen Anhco President And CEO |
1 620 Value: $18.8K |
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|
Aug 18, 2025 Sell |
Grant-huerta Yanina Chief Accounting Officer |
55 Value: $638 |
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Aug 18, 2025 Sell |
Grant-huerta Yanina Chief Accounting Officer |
86 Value: $999 |
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|
Aug 18, 2025 Sell |
Grant-huerta Yanina Chief Accounting Officer |
1 668 Value: $19.4K |
||
|
Aug 18, 2025 Sell |
Grant-huerta Yanina Chief Accounting Officer |
1 668 Value: $19.4K |
||
|
Aug 18, 2025 Sell |
Grant-huerta Yanina Chief Accounting Officer |
86 Value: $999 |
||
|
Aug 18, 2025 Sell |
Grant-huerta Yanina Chief Accounting Officer |
55 Value: $638 |
||
|
Aug 18, 2025 Sell |
Nguyen Anhco President And CEO |
1 620 Value: $18.8K |
||
|
Aug 18, 2025 Sell |
Nguyen Anhco President And CEO |
1 281 Value: $14.9K |
||
|
Aug 18, 2025 Sell |
Nguyen Anhco President And CEO |
57 Value: $662 |
||
|
Aug 15, 2025 Buy |
Panacea Innovation Ltd 10 Percent Owner |
55 000 Value: $670.4K |
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Aug 15, 2025 Buy |
Panacea Innovation Ltd 10 Percent Owner |
55 000 Value: $670.4K |
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|
Jul 17, 2025 Buy |
Panacea Innovation Ltd 10 Percent Owner |
19 335 Value: $186.4K |
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Jul 17, 2025 Buy |
Panacea Innovation Ltd 10 Percent Owner |
19 335 Value: $186.4K |
||
|
Jun 10, 2025 Buy |
Gallagher Carol Giltner Director |
7 828 Value: $71.4K |
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Jun 10, 2025 Buy |
Fust Matthew K Director |
7 828 Value: $71.4K |
||
|
Jun 10, 2025 Buy |
Touchon Pascal Director |
7 828 Value: $71.4K |
||
|
Jun 10, 2025 Buy |
Roncarolo Maria Grazia Director |
7 828 Value: $71.4K |
||
|
Jun 10, 2025 Buy |
Mallik Ameet Director |
7 828 Value: $71.4K |
||
|
Jun 10, 2025 Buy |
Heiden William K Director |
7 828 Value: $71.4K |
||
|
Jun 10, 2025 Buy |
Heiden William K Director |
7 828 Value: $71.4K |
About Insider Power
Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.
It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.
While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.
* October 6th, 2025 - Tested on 5562 stocks
