William Mariner Greenman
President and CEO at Cerus Corporation
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Cerus Corporation, 3 years.
Cerus Corporation
Director · President and CEO
Chief executive roles
Cerus Corporation
· President and CEO
Dates unknown
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 14, 2025 | Cerus Corporation | Open-market sale | −122,827 | $1.45 | $178,099 |
| Mar 13, 2025 | Cerus Corporation | Open-market sale | −71,086 | $1.45 | $103,075 |
| Mar 7, 2025 | Cerus Corporation | Open-market sale | −60,984 | $1.50 | $91,476 |
| Mar 6, 2025 | Cerus Corporation | Grant or award | +975,000 | — | — |
| Mar 6, 2025 | Cerus Corporation | Grant or award | +165,742 | — | — |
| Mar 4, 2025 | Cerus Corporation | Open-market sale | −23,023 | $1.55 | $35,686 |
| Mar 3, 2025 | Cerus Corporation | Option exercise | +57,637 | — | — |
| Mar 14, 2024 | Cerus Corporation | Open-market sale | −63,611 | $2.02 | $128,494 |
| Mar 13, 2024 | Cerus Corporation | Open-market sale | −62,315 | $2.06 | $128,369 |
| Mar 12, 2024 | Cerus Corporation | Option exercise | +64,666 | — | — |
| Mar 1, 2024 | Cerus Corporation | Grant or award | +575,000 | — | — |
| Mar 13, 2023 | Cerus Corporation | Open-market sale | −37,748 | $2.80 | $105,694 |
| Mar 13, 2023 | Cerus Corporation | Open-market sale | −22,732 | $2.80 | $63,650 |
| Mar 12, 2023 | Cerus Corporation | Option exercise | +107,525 | — | — |
| Mar 12, 2023 | Cerus Corporation | Option exercise | +64,667 | — | — |
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