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Buy GRAL
Grail Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be negative at -97.50. In total, the insiders bought 236.78K and sold 55.82M GRAL 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
|
-97.50 |
| ● Buy | 236.78K shares |
| ● Sell | 55.82M shares |
|
36% Buy Activity
Negligible or No Correlation
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|
Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
May 29, 2025 Buy |
Mizell Steven Director |
6 082 Value: $250.0K |
||
|
May 29, 2025 Buy |
Chase William J Director |
6 082 Value: $250.0K |
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|
May 29, 2025 Buy |
Summe Gregory L Director |
6 082 Value: $250.0K |
||
|
May 02, 2025 Sell |
Ragusa Robert P Chief Executive Officer |
94 035 Value: $3.19M |
||
|
May 02, 2025 Sell |
Freidin Aaron Chief Financial Officer |
41 150 Value: $1.40M |
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|
May 02, 2025 Sell |
Ofman Joshua J. President |
48 213 Value: $1.64M |
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|
May 02, 2025 Sell |
Ragusa Robert P Chief Executive Officer |
94 035 Value: $3.19M |
||
|
May 02, 2025 Sell |
Freidin Aaron Chief Financial Officer |
41 150 Value: $1.40M |
||
|
May 02, 2025 Sell |
Ofman Joshua J. President |
48 213 Value: $1.64M |
||
|
Apr 15, 2025 Buy |
Summe Gregory L Director |
1 212 Value: $31.4K |
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|
Apr 15, 2025 Buy |
Mizell Steven Director |
760 Value: $19.7K |
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|
Apr 15, 2025 Buy |
Chase William J Director |
784 Value: $20.3K |
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|
Apr 15, 2025 Buy |
Summe Gregory L Director |
1 212 Value: $31.4K |
||
|
Apr 15, 2025 Buy |
Mizell Steven Director |
760 Value: $19.7K |
||
|
Apr 15, 2025 Buy |
Chase William J Director |
784 Value: $20.3K |
||
|
Mar 11, 2025 Sell |
Ofman Joshua J. President |
2 109 Value: $65.8K |
||
|
Mar 11, 2025 Sell |
Ragusa Robert P Chief Executive Officer |
7 625 Value: $238.0K |
||
|
Mar 11, 2025 Sell |
Freidin Aaron Chief Financial Officer |
1 816 Value: $56.7K |
||
|
Mar 11, 2025 Sell |
Ofman Joshua J. President |
2 109 Value: $65.8K |
||
|
Mar 11, 2025 Sell |
Ragusa Robert P Chief Executive Officer |
7 625 Value: $238.0K |
||
|
Mar 11, 2025 Sell |
Freidin Aaron Chief Financial Officer |
1 816 Value: $56.7K |
||
|
Jun 24, 2024 Sell |
Illumina, Inc. 10 Percent Owner |
26 547 021 Value: $0 |
||
|
Jun 24, 2024 Sell |
Illumina, Inc. 10 Percent Owner |
26 547 021 Value: $0 |
||
|
Jun 03, 2024 Buy |
Illumina, Inc. 10 Percent Owner |
0 Value: $0 |
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|
Jun 03, 2024 Buy |
Illumina, Inc. 10 Percent Owner |
0 Value: $0 |
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
