As of September 29, 2026, Cerus's top three insider holders are William Mariner Greenman (President And Ceo, 5.05Mn shares), William Mariner Greenman (President And Ceo, 3.24Mn shares), Laurence M Corash (Chief Scientific Officer, 2.35Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | William Mariner Greenman | President And Ceo | 8,295,577 | 0 | 8,295,577 | 35.2% | 02 Jul, 2026 |
| 2 | Laurence M Corash | Chief Scientific Officer | 4,691,241 | 0 | 4,691,241 | 19.9% | 14 Mar, 2024 |
| 3 | Vivek K Jayaraman | Chief Executive Officer | 3,138,905 | 0 | 3,138,905 | 13.3% | 20 Jul, 2026 |
| 4 | Kevin Dennis Green | Chief Financial Officer | 1,701,827 | 0 | 1,701,827 | 7.2% | 02 Jul, 2026 |
| 5 | Chrystal Jensen | Chief Legal Officer | 1,446,187 | 0 | 1,446,187 | 6.1% | 17 Aug, 2026 |
| 6 | Richard J Benjamin | Chief Medical Officer | 1,284,800 | 0 | 1,284,800 | 5.5% | 16 Mar, 2026 |
| 7 | Carol Moore | Svp Reg. Quality | 990,199 | 0 | 990,199 | 4.2% | 14 Mar, 2024 |
| 8 | Frank Witney | Director | 340,059 | 0 | 340,059 | 1.4% | 02 Jun, 2026 |
| 9 | Jami K Nachtsheim | Director | 268,362 | 0 | 268,362 | 1.1% | 02 Jun, 2026 |
| 10 | Eric Bjerkholt | Director | 261,679 | 0 | 261,679 | 1.1% | 11 Jun, 2026 |
| 11 | Ann Lucena | Director | 232,284 | 0 | 232,284 | 1.0% | 02 Jun, 2026 |
| 12 | Daniel N Jr Swisher | Director | 207,045 | 0 | 207,045 | 0.9% | 04 Jun, 2025 |
| 13 | Timothy L. Moore | Director | 205,073 | 0 | 205,073 | 0.9% | 04 Jun, 2025 |
| 14 | Hua Shan | Director | 192,386 | 0 | 192,386 | 0.8% | 02 Jun, 2026 |
| 15 | Gail Schulze | Director | 163,420 | 0 | 163,420 | 0.7% | 06 Jun, 2024 |
| 16 | Dean A. Gregory | Director | 146,725 | 0 | 146,725 | 0.6% | 02 Jun, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 17 Aug, 2026 | Chrystal Jensen | Chief Legal Officer | Disposed S | 30,000 | $2.98 | $89.53K | 936,657 | Direct |
| 16 Jul, 2026 | Vivek K Jayaraman | Chief Executive Officer | Disposed S | 16,666 | $3.16 | $52.66K | 2,232,211 | Direct |
| 30 Jun, 2026 | Vivek K Jayaraman | Chief Operating Officer | Disposed A | 80,000 | $0.00 | $0 | 1,736,707 | Direct |
| 30 Jun, 2026 | Kevin Dennis Green | Chief Financial Officer | Disposed A | 63,600 | $0.00 | $0 | 1,095,864 | Direct |
| 30 Jun, 2026 | William Mariner Greenman | President And Ceo | Disposed A | 192,500 | $0.00 | $0 | 5,154,955 | Direct |
| 30 Jun, 2026 | Chrystal Jensen | Chief Legal Officer | Disposed A | 55,000 | $0.00 | $0 | 990,986 | Direct |
| 30 Jun, 2026 | Vivek K Jayaraman | Chief Operating Officer | Disposed S | 42,359 | $2.94 | $124.66K | 1,694,348 | Direct |
| 30 Jun, 2026 | Chrystal Jensen | Chief Legal Officer | Disposed S | 24,329 | $2.94 | $71.60K | 966,657 | Direct |
| 30 Jun, 2026 | Kevin Dennis Green | Chief Financial Officer | Disposed S | 33,676 | $2.94 | $99.11K | 1,062,188 | Direct |
| 30 Jun, 2026 | William Mariner Greenman | President And Ceo | Disposed S | 101,919 | $2.94 | $299.94K | 5,053,036 | Direct |
| 01 Jul, 2026 | Vivek K Jayaraman | Chief Operating Officer | Acquired A | 554,529 | $0.00 | $0 | 2,248,877 | Direct |
| 01 Jul, 2026 | Vivek K Jayaraman | Chief Operating Officer | Acquired A | 369,686 | $0.00 | $0 | 369,686 | Direct |
| 09 Jun, 2026 | Eric Bjerkholt | Director | Disposed S | 20,454 | $2.60 | $53.18K | 261,679 | Direct |
| 02 Jun, 2026 | Ann Lucena | Director | Acquired A | 60,000 | $0.00 | $0 | 232,284 | Direct |
| 02 Jun, 2026 | Dean A. Gregory | Director | Acquired A | 60,000 | $0.00 | $0 | 146,725 | Direct |
| 02 Jun, 2026 | Frank Witney | Director | Acquired A | 60,000 | $0.00 | $0 | 340,059 | Direct |
| 02 Jun, 2026 | Eric Bjerkholt | Director | Acquired A | 60,000 | $0.00 | $0 | 282,133 | Direct |
| 02 Jun, 2026 | Jami K Nachtsheim | Director | Acquired A | 60,000 | $0.00 | $0 | 268,362 | Direct |
| 02 Jun, 2026 | Hua Shan | Director | Acquired A | 60,000 | $0.00 | $0 | 192,386 | Direct |
| 29 May, 2026 | Vivek K Jayaraman | Chief Operating Officer | Disposed S | 16,667 | $3.00 | $50.00K | 1,656,707 | Direct |