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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 -40.69. In total, the insiders bought 9.44M and sold 2.74M 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
|
-40.69 |
| ● Buy | 9.44M shares |
| ● Sell | 2.74M shares |
|
52% Buy Activity
Negligible or No Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Jul 01, 2026 Buy |
Jayaraman Vivek K Chief Operating Officer |
554 529 Value: $1.66M |
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|
Jul 01, 2026 Buy |
Jayaraman Vivek K Chief Operating Officer |
369 686 Value: $1.11M |
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|
Jun 30, 2026 Buy |
Green Kevin Dennis Chief Financial Officer |
63 600 Value: $185.7K |
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Jun 30, 2026 Sell |
Green Kevin Dennis Chief Financial Officer |
33 676 Value: $99.1K |
||
|
Jun 30, 2026 Buy |
Jayaraman Vivek K Chief Operating Officer |
80 000 Value: $233.6K |
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|
Jun 30, 2026 Sell |
Jayaraman Vivek K Chief Operating Officer |
42 359 Value: $124.7K |
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|
Jun 30, 2026 Buy |
Jensen Chrystal Chief Legal Officer |
55 000 Value: $160.6K |
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|
Jun 30, 2026 Sell |
Jensen Chrystal Chief Legal Officer |
24 329 Value: $71.6K |
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|
Jun 30, 2026 Buy |
Greenman William Mariner President And CEO |
192 500 Value: $562.1K |
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Jun 30, 2026 Sell |
Greenman William Mariner President And CEO |
101 919 Value: $299.9K |
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|
Jun 09, 2026 Sell |
Bjerkholt Eric Director |
20 454 Value: $53.2K |
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|
Jun 02, 2026 Buy |
Shan Hua Director |
60 000 Value: $162.0K |
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|
Jun 02, 2026 Buy |
Gregory Dean A. Director |
60 000 Value: $162.0K |
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|
Jun 02, 2026 Buy |
Witney Frank Director |
60 000 Value: $162.0K |
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Jun 02, 2026 Buy |
Nachtsheim Jami K Director |
60 000 Value: $162.0K |
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|
Jun 02, 2026 Buy |
Bjerkholt Eric Director |
60 000 Value: $162.0K |
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Jun 02, 2026 Buy |
Lucena Ann Director |
60 000 Value: $162.0K |
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|
May 29, 2026 Sell |
Jayaraman Vivek K Chief Operating Officer |
16 667 Value: $50.0K |
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|
May 01, 2026 Sell |
Jayaraman Vivek K Chief Operating Officer |
16 667 Value: $50.0K |
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|
Apr 01, 2026 Buy |
Jensen Chrystal Chief Legal Officer |
200 000 Value: $374.0K |
||
|
Apr 01, 2026 Buy |
Green Kevin Dennis Chief Financial Officer |
200 000 Value: $374.0K |
||
|
Mar 12, 2026 Sell |
Benjamin Richard J Chief Medical Officer |
101 740 Value: $168.6K |
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|
Mar 12, 2026 Sell |
Green Kevin Dennis Chief Financial Officer |
127 544 Value: $211.4K |
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|
Mar 12, 2026 Sell |
Greenman William Mariner President And CEO |
447 757 Value: $742.0K |
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|
Mar 12, 2026 Sell |
Jayaraman Vivek K Chief Operating Officer |
165 200 Value: $273.8K |
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
