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Buy CERS
Cerus Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be negative at -41.14. In total, the insiders bought 10.65M and sold 2.67M CERS 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
|
-41.14 |
| ● Buy | 10.65M shares |
| ● Sell | 2.67M shares |
|
53% Buy Activity
Weak Positive Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Mar 05, 2026 Sell |
Benjamin Richard J Chief Medical Officer |
61 233 Value: $126.3K |
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|
Mar 05, 2026 Buy |
Jensen Chrystal Chief Legal Officer |
55 220 Value: $112.4K |
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|
Mar 05, 2026 Buy |
Jayaraman Vivek K Chief Operating Officer |
80 320 Value: $163.5K |
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|
Mar 02, 2026 Buy |
Benjamin Richard J Chief Medical Officer |
264 000 Value: $667.9K |
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|
Mar 02, 2026 Buy |
Green Kevin Dennis Chief Financial Officer |
300 000 Value: $759.0K |
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|
Mar 02, 2026 Buy |
Greenman William Mariner President And CEO |
1 200 000 Value: $3.04M |
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|
Mar 02, 2026 Buy |
Jayaraman Vivek K Chief Operating Officer |
420 000 Value: $1.06M |
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|
Mar 02, 2026 Buy |
Jensen Chrystal Chief Legal Officer |
300 000 Value: $759.0K |
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|
Nov 24, 2025 Sell |
Jensen Chrystal Chief Legal Officer |
55 000 Value: $93.5K |
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Aug 25, 2025 Buy |
Gregory Dean A. Director |
25 000 Value: $31.3K |
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|
Aug 25, 2025 Buy |
Gregory Dean A. Director |
25 000 Value: $31.3K |
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Jun 03, 2025 Buy |
Witney Frank Director |
60 000 Value: $86.4K |
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Jun 03, 2025 Buy |
Moore Timothy L. Director |
60 000 Value: $86.4K |
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Jun 03, 2025 Buy |
Swisher Daniel N Jr Director |
60 000 Value: $86.4K |
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Jun 03, 2025 Buy |
Nachtsheim Jami K Director |
60 000 Value: $86.4K |
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|
Jun 03, 2025 Buy |
Lucena Ann Director |
60 000 Value: $86.4K |
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Jun 03, 2025 Buy |
Shan Hua Director |
60 000 Value: $86.4K |
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Jun 03, 2025 Buy |
Bjerkholt Eric Director |
60 000 Value: $86.4K |
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Jun 03, 2025 Buy |
Bjerkholt Eric Director |
60 000 Value: $86.4K |
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Jun 03, 2025 Buy |
Shan Hua Director |
60 000 Value: $86.4K |
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|
Jun 03, 2025 Buy |
Lucena Ann Director |
60 000 Value: $86.4K |
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|
Jun 03, 2025 Buy |
Nachtsheim Jami K Director |
60 000 Value: $86.4K |
||
|
Jun 03, 2025 Buy |
Swisher Daniel N Jr Director |
60 000 Value: $86.4K |
||
|
Jun 03, 2025 Buy |
Moore Timothy L. Director |
60 000 Value: $86.4K |
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|
Jun 03, 2025 Buy |
Witney Frank Director |
60 000 Value: $86.4K |
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
