Who
William Mariner Greenman
President and CEO
Company insider
Files Form 4 as: President and CEO, Cerus; Director, Chinook Therapeutics.
In numbers
- Trades disclosed
- 196
- Buys
- 6
- Sells
- 23
- Bought
- $260K
- Sold
- $8.0M
- Companies
- 2
- Companies where not an officer
- 1
- First trade
- 2 Oct 2006
- Last trade
- 30 Jun 2026
- Last filed
- 2 Jul 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 30 Jun 2026filed 2 Jul 2026 | CERS CerusMedical Devices | SEC FORM 4 Code A | —192,500 at $0.00 | filing |
| 30 Jun 2026filed 2 Jul 2026 | CERS CerusMedical Devices | SEC FORM 4 Sold | $300K101,919 at $2.94 | filing |
| 30 Jun 2026filed 2 Jul 2026 | CERS CerusMedical Devices | SEC FORM 4 Code A | —192,500 at $0.00 | filing |
| 30 Jun 2026filed 2 Jul 2026 | CERS CerusMedical Devices | SEC FORM 4 Sold | $300K101,919 at $2.94 | filing |
| 12 Mar 2026filed 16 Mar 2026 | CERS CerusMedical Devices | SEC FORM 4 Sold | $742K447,757 at $1.66 | filing |
| 12 Mar 2026filed 16 Mar 2026 | CERS CerusMedical Devices | SEC FORM 4 Sold | $743K447,757 at $1.66 | filing |
| 6 Mar 2026filed 9 Mar 2026 | CERS CerusMedical Devices | SEC FORM 4 Sold | $157K78,187 at $2.01 | filing |
| 6 Mar 2026filed 9 Mar 2026 | CERS CerusMedical Devices | SEC FORM 4 Sold | $157K78,187 at $2.01 | filing |
| 5 Mar 2026filed 9 Mar 2026 | CERS CerusMedical Devices | SEC FORM 4 Code A | —193,270 at $0.00 | filing |
| 5 Mar 2026filed 9 Mar 2026 | CERS CerusMedical Devices | SEC FORM 4 Code A | —193,270 at $0.00 | filing |
| 2 Mar 2026filed 4 Mar 2026 | CERS CerusMedical Devices | SEC FORM 4 Code A | —1,200,000 at $0.00 | filing |
| 2 Mar 2026filed 4 Mar 2026 | CERS CerusMedical Devices | SEC FORM 4 Code A | —1,200,000 at $0.00 | filing |
| 14 Mar 2025filed 17 Mar 2025 | CERS CerusMedical Devices | SEC FORM 4 Sold | $178K122,827 at $1.45 | filing |
| 13 Mar 2025filed 17 Mar 2025 | CERS CerusMedical Devices | SEC FORM 4 Sold | $103K71,086 at $1.45 | filing |
| 7 Mar 2025filed 10 Mar 2025 | CERS CerusMedical Devices | SEC FORM 4 Sold | $91K60,984 at $1.50 | filing |
| 6 Mar 2025filed 10 Mar 2025 | CERS CerusMedical Devices | SEC FORM 4 Code A | —975,000 at $0.00 | filing |
| 6 Mar 2025filed 10 Mar 2025 | CERS CerusMedical Devices | SEC FORM 4 Code A | —165,742 at $0.00 | filing |
| 4 Mar 2025filed 5 Mar 2025 | CERS CerusMedical Devices | SEC FORM 4 Sold | $36K23,023 at $1.55 | filing |
| 3 Mar 2025filed 5 Mar 2025 | CERS Cerusoption or derivative · Medical Devices | SEC FORM 4 Code M | —57,637 | filing |
| 3 Mar 2025filed 5 Mar 2025 | CERS CerusMedical Devices | SEC FORM 4 Code M | —57,637 | filing |
News
TransMedics Group (NASDAQ:TMDX) and Cerus (NASDAQ:CERS) Head-To-Head ContrastCERS · themarketsdaily.com · 13 Oct 2026
0 headlines in the last 90 days name William Mariner Greenman; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.