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Buy GERN
Geron Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be positive at 89.02. In total, the insiders bought 58.31M and sold 1.36M GERN 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
|
89.02 |
| ● Buy | 58.31M shares |
| ● Sell | 1.36M shares |
|
97% Buy Activity
Strong Negative Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Aug 07, 2025 Buy |
Semerjian Harout President And CEO |
0 Value: $0 |
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|
Aug 07, 2025 Buy |
Semerjian Harout President And CEO |
4 000 000 Value: $5.20M |
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Aug 07, 2025 Buy |
Semerjian Harout President And CEO |
7 000 000 Value: $9.10M |
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Jun 30, 2025 Buy |
Spiegel Robert J. Director |
5 540 Value: $8K |
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|
Jun 30, 2025 Buy |
Spiegel Robert J. Director |
5 540 Value: $8K |
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May 21, 2025 Buy |
Aggarwal Gaurav Director |
180 000 Value: $241.2K |
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|
May 21, 2025 Buy |
Bir Dawn Carter Interim President And CEO |
180 000 Value: $241.2K |
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|
May 21, 2025 Buy |
Lawlis V Bryan Director |
180 000 Value: $241.2K |
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|
May 21, 2025 Buy |
Mcdonald John F Director |
180 000 Value: $241.2K |
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|
May 21, 2025 Buy |
Molineaux Susan Director |
180 000 Value: $241.2K |
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May 21, 2025 Buy |
O'farrell Elizabeth G. Director |
180 000 Value: $241.2K |
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May 21, 2025 Buy |
Spiegel Robert J. Director |
180 000 Value: $241.2K |
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May 21, 2025 Buy |
Spiegel Robert J. Director |
180 000 Value: $241.2K |
||
|
May 21, 2025 Buy |
O'farrell Elizabeth G. Director |
180 000 Value: $241.2K |
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|
May 21, 2025 Buy |
Molineaux Susan Director |
180 000 Value: $241.2K |
||
|
May 21, 2025 Buy |
Mcdonald John F Director |
180 000 Value: $241.2K |
||
|
May 21, 2025 Buy |
Lawlis V Bryan Director |
180 000 Value: $241.2K |
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|
May 21, 2025 Buy |
Bir Dawn Carter Interim President And CEO |
180 000 Value: $241.2K |
||
|
May 21, 2025 Buy |
Aggarwal Gaurav Director |
180 000 Value: $241.2K |
||
|
May 09, 2025 Buy |
Lawlis V Bryan Director |
13 300 Value: $15.7K |
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May 09, 2025 Buy |
Lawlis V Bryan Director |
13 300 Value: $15.7K |
||
|
Mar 31, 2025 Buy |
Spiegel Robert J. Director |
4 913 Value: $8K |
||
|
Mar 31, 2025 Buy |
Spiegel Robert J. Director |
4 913 Value: $8K |
||
|
Feb 27, 2025 Buy |
Samuels Scott Alan EVP, Chief Legal Officer |
15 000 Value: $24.2K |
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|
Feb 27, 2025 Buy |
Scarlett John A Chairman, President And CEO |
12 500 Value: $22.1K |
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
