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? 100% planned / 0% discretionary
Largest single sale: $299.9K.
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 |
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.