Richard J. Benjamin is Chief Medical Officer at CERUS CORP (CERS). They have made 16 open-market trades across 1 company since 2014, most recently 2026-03-12.
CIK 0001296322
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 16 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CERS | 777,361 | $1.7M |
Shares reported on the most recent Form 4, priced at the 2026-03-16 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CERS | SELL · 10b5-1 | 2026-03-12 | 2026-03-16 | $1.66 | $337K | +3.4% | +14.4% | +42.4% |
| CERS | SELL | 2026-03-05 | 2026-03-10 | $1.99 | $251K | -2.3% | +8.5% | +48.0% |
| CERS | SELL · 10b5-1 | 2025-03-13 | 2025-03-17 | $1.45 | $71K | +2.1% | -7.8% | +0.0% |
| CERS | SELL · 10b5-1 | 2025-03-07 | 2025-03-10 | $1.50 | $39K | +4.1% | -5.4% | +0.0% |
| CERS | SELL · 10b5-1 | 2025-03-03 | 2025-03-05 | $1.58 | $172K | -8.2% | -21.5% | -8.9% |
| CERS | SELL · 10b5-1 | 2024-08-02 | 2024-08-07 | $2.50 | $108K | +11.5% | -3.3% | -20.6% |
| CERS | SELL · 10b5-1 | 2024-03-13 | 2024-03-14 | $2.01 | $71K | -12.6% | -13.1% | -7.5% |
| CERS | SELL | 2024-03-08 | 2024-03-12 | $2.40 | $141K | -11.8% | -19.7% | -17.1% |
| CERS | SELL · 10b5-1 | 2023-03-13 | 2023-03-14 | $2.79 | $71K | +3.2% | +3.2% | -9.6% |
| CERS | SELL | 2022-08-09 | 2022-08-11 | $5.12 | $51K | -13.5% | -18.8% | -31.9% |
| CERS | SELL | 2022-03-14 | 2022-03-15 | $5.04 | $234K | +9.8% | -1.8% | -6.5% |
| CERS | SELL | 2021-11-03 | 2021-11-05 | $7.59 | $1.7M | -5.7% | -15.7% | -34.8% |
| CERS | SELL | 2021-03-15 | 2021-03-16 | $6.37 | $466K | -4.2% | +2.1% | -5.3% |
| CERS | SELL | 2020-08-24 | 2020-08-26 | $7.90 | $790K | -9.9% | -5.1% | -8.4% |
| CERS | SELL | 2020-07-07 | 2020-07-09 | $7.20 | $1.5M | -2.6% | +1.4% | -5.7% |
| CERS | SELL | 2020-03-17 | 2020-03-24 | $3.59 | $158K | +16.3% | +36.5% | +66.7% |
| CERS | SELL | 2019-08-07 | 2019-08-09 | $5.01 | $165K | +6.0% | -4.6% | -18.5% |
| CERS | SELL | 2019-03-12 | 2019-03-13 | $5.96 | $59K | -2.1% | +1.1% | -27.4% |
| CERS | SELL | 2018-08-28 | 2018-08-30 | $7.52 | $376K | -5.9% | -6.5% | -31.1% |
| CERS | SELL | 2018-05-11 | 2018-05-14 | $6.69 | $115K | +0.8% | +1.5% | +9.5% |
| CERS | SELL | 2018-03-12 | 2018-03-13 | $4.98 | $18K | +6.6% | +5.4% | +28.0% |
| CERS | SELL | 2017-03-14 | 2017-03-15 | $4.15 | $5K | -3.7% | -4.6% | -45.4% |
| CERS | SELL | 2014-08-14 | 2018-08-16 | $7.20 | $510K | +8.8% | +3.3% | -26.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.