CERS Cerus Corporation
Cerus Corporation (CERS) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 90% planned / 10% discretionary
Largest single sale: $742.0K.
Where they traded
Last open-market purchase: August 25, 2025 — 1.1 years ago, by Gregory Dean A. .
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Jensen Chrystal | Chief Legal Officer | Sell 10b5-1 | 30,000 | $2.98 | $89.5K | 936,657 −3.1% of holding | |
| Jayaraman Vivek K | Chief Executive Officer | Sell 10b5-1 | 16,666 | $3.16 | $52.7K | 2,232,211 −0.7% of holding | |
| Greenman William Mariner | President and CEO | Sell 10b5-1 | 101,919 | $2.94 | $299.9K | 5,053,036 −2% of holding | |
| Jayaraman Vivek K | Chief Operating Officer | Sell 10b5-1 | 42,359 | $2.94 | $124.7K | 1,694,348 −2.4% of holding | |
| Green Kevin Dennis | Chief Financial Officer | Sell 10b5-1 | 33,676 | $2.94 | $99.1K | 1,062,188 −3.1% of holding | |
| Jensen Chrystal | Chief Legal Officer | Sell 10b5-1 | 24,329 | $2.94 | $71.6K | 966,657 −2.5% of holding | |
| BJERKHOLT ERIC | Director | Sell | 20,454 | $2.60 | $53.2K | 261,679 −7.2% of holding | |
| Jayaraman Vivek K | Chief Operating Officer | Sell 10b5-1 | 16,667 | $3.00 | $50.0K | 1,656,707 −1% of holding | |
| Jayaraman Vivek K | Chief Operating Officer | Sell 10b5-1 | 16,667 | $3.00 | $50.0K | 1,673,374 −1% of holding | |
| Greenman William Mariner | President and CEO | Sell 10b5-1 | 447,757 | $1.66 | $742.0K | 4,998,493 −8.2% of holding | |
| Jayaraman Vivek K | Chief Operating Officer | Sell 10b5-1 | 165,200 | $1.66 | $273.8K | 1,747,674 −8.6% of holding | |
| Green Kevin Dennis | Chief Financial Officer | Sell 10b5-1 | 127,544 | $1.66 | $211.4K | 1,040,551 −10.9% of holding | |
| Benjamin Richard J | Chief Medical Officer | Sell 10b5-1 | 101,740 | $1.66 | $168.6K | 777,361 −11.6% of holding | |
| Benjamin Richard J | Chief Medical Officer | Sell | 40,426 | $1.88 | $76.0K | 879,101 −4.4% of holding | |
| Benjamin Richard J | Chief Medical Officer | Sell 10b5-1 | 40,426 | $1.88 | $76.0K | 879,101 −4.4% of holding | |
| Greenman William Mariner | President and CEO | Sell 10b5-1 | 78,187 | $2.01 | $156.8K | 5,446,250 −1.4% of holding | |
| Benjamin Richard J 2 fills | Chief Medical Officer | Sell 10b5-1 | 48,470 | $2.01 | $97.2K | 919,527 −5% of holding | |
| Jayaraman Vivek K | Chief Operating Officer | Sell 10b5-1 | 34,094 | $2.01 | $68.4K | 1,912,874 −1.8% of holding | |
| Jensen Chrystal | Chief Legal Officer | Sell 10b5-1 | 30,845 | $2.01 | $61.9K | 1,059,139 −2.8% of holding | |
| Green Kevin Dennis | Chief Financial Officer | Sell 10b5-1 | 27,796 | $2.01 | $55.7K | 1,168,095 −2.3% of holding | |
| Benjamin Richard J | Chief Medical Officer | Sell | 61,233 | $2.06 | $126.3K | 943,762 −6.1% of holding | |
| Benjamin Richard J | Chief Medical Officer | Sell 10b5-1 | 61,233 | $2.06 | $126.3K | 943,762 −6.1% of holding | |
| Green Kevin Dennis | Chief Financial Officer | Sell 10b5-1 | 55,225 | $2.06 | $113.9K | 1,195,891 −4.4% of holding | |
| Jensen Chrystal | Chief Legal Officer | Sell | 55,000 | $1.70 | $93.5K | 728,294 −7% of holding |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.