| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
President and CEO
1 company
Greenman William Mariner serves as a President and CEO at CERS. Across recent SEC filings that breaks down to 1 buy and 28 sells. Those positions are worth an estimated $14.9M at current prices.
Historically, Greenman William Mariner's trades have earned a strong insider score of 70/100 across 11 rated trades. Over a 12-month horizon, 60.0% of those trades were profitable, with an average 12-month return of +9.5%.
The biggest single holding is CERS (~$14.9M) as President and CEO. The recent filings there lean toward selling, a net 1,891,902 shares.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 30, 2026 | CERS Cerus Corporation | President and CEO | Sell10b5-1 | 101,919 | $2.94 | $299,937.43 | -2.0% | -16.1% | - | |
| Mar 12, 2026 | CERS Cerus Corporation | President and CEO | Sell10b5-1 | 447,757 | $1.66 | $742,022.90 | -8.2% | +50.6% | - | |
| Mar 6, 2026 | CERS Cerus Corporation | President and CEO | Sell10b5-1 | 78,187 | $2.01 | $156,804.03 | -1.4% | +43.8% | - | |
| Mar 14, 2025 | CERS Cerus Corp | President and CEO | Sell10b5-1 | 193,913 | $1.45 | $281,173.85 | -4.5% | -5.5% | +16.6% | |
| Mar 7, 2025 | CERS Cerus Corp | President and CEO | Sell10b5-1 | 60,984 | $1.50 | $91,354.03 | -1.4% | -8.6% | +28.5% | |
| Mar 4, 2025 | CERS Cerus Corp | President and CEO | Sale+OE10b5-1 | 23,023 | $1.55 | $35,651.12 | -0.7% | -16.5% | +41.1% | |
| Mar 14, 2024 | CERS Cerus Corp | President and CEO | Sale+OE | 125,926 | $2.04 | $256,377.20 | -3.8% | -7.1% | -26.8% | |
| Mar 13, 2023 | CERS Cerus Corp | President and CEO | Sale+OE | 60,480 | $2.80 | $169,344.00 | -2.2% | -13.0% | -26.7% | |
| Mar 14, 2022 | CERS Cerus Corp | President and CEO | Sale+OE | 165,021 | $5.04 | $831,634.46 | -7.7% | -6.3% | -41.1% | |
| Feb 25, 2022 | CERS Cerus Corp | President and CEO | Sale+OE | 308,263 | $5.70 | $1,757,042.62 | -16.2% | -14.2% | -52.0% |