As of September 09, 2026, Cerus's top three insider holders are William Mariner Greenman (President And Ceo, 5.05Mn shares), William Mariner Greenman (President And Ceo, 5.00Mn shares), William Mariner Greenman (President And Ceo, 3.24Mn 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 | 35.5% | 02 Jul, 2026 |
| 2 | Laurence M Corash | Chief Scientific Officer | 4,691,241 | 0 | 4,691,241 | 20.1% | 14 Mar, 2024 |
| 3 | Vivek K Jayaraman | Chief Executive Officer | 3,138,905 | 0 | 3,138,905 | 13.4% | 20 Jul, 2026 |
| 4 | Kevin Dennis Green | Chief Financial Officer | 1,701,827 | 0 | 1,701,827 | 7.3% | 02 Jul, 2026 |
| 5 | Chrystal Jensen | Chief Legal Officer | 1,446,187 | 0 | 1,446,187 | 6.2% | 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 | 1.5% | 02 Jun, 2026 |
| 9 | Eric Bjerkholt | Director | 282,133 | 0 | 282,133 | 1.2% | 02 Jun, 2026 |
| 10 | Jami K Nachtsheim | Director | 268,362 | 0 | 268,362 | 1.1% | 02 Jun, 2026 |
| 11 | Ann Lucena | Director | 232,284 | 0 | 232,284 | 1.0% | 02 Jun, 2026 |
| 12 | Timothy L. Moore | Director | 205,073 | 0 | 205,073 | 0.9% | 04 Jun, 2025 |
| 13 | Hua Shan | Director | 192,386 | 0 | 192,386 | 0.8% | 02 Jun, 2026 |
| 14 | Gail Schulze | Director | 163,420 | 0 | 163,420 | 0.7% | 06 Jun, 2024 |
| 15 | 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 | Kevin Dennis Green | Chief Financial Officer | Disposed A | 63,600 | $0.00 | $0 | 1,095,864 | 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 A | 80,000 | $0.00 | $0 | 1,736,707 | Direct |
| 30 Jun, 2026 | William Mariner Greenman | President And Ceo | Disposed A | 192,500 | $0.00 | $0 | 5,154,955 | 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 | 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 | 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 | Eric Bjerkholt | Director | Acquired A | 60,000 | $0.00 | $0 | 282,133 | 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 | Jami K Nachtsheim | Director | Acquired A | 60,000 | $0.00 | $0 | 268,362 | Direct |
| 29 May, 2026 | Vivek K Jayaraman | Chief Operating Officer | Disposed S | 16,667 | $3.00 | $50.00K | 1,656,707 | Direct |
| 02 Jun, 2026 | Hua Shan | Director | Acquired A | 60,000 | $0.00 | $0 | 192,386 | Direct |