SEC Form 4 · Updated Daily
CERS
— CERUS CORPORATION OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Greenman William Mariner | Director · Officer | 5,053,036 | 2026-06-30 | S |
| Jayaraman Vivek K | Officer | 2,232,211 | 2026-07-16 | S |
| Green Kevin Dennis | Officer | 1,062,188 | 2026-06-30 | S |
| Jensen Chrystal | Officer | 936,657 | 2026-08-17 | S |
| Benjamin Richard J | Officer | 777,361 | 2026-03-12 | S |
| Witney Frank | Director | 340,059 | 2026-06-02 | A |
| NACHTSHEIM JAMI K | Director | 268,362 | 2026-06-02 | A |
| BJERKHOLT ERIC | Director | 261,679 | 2026-06-09 | S |
| Lucena Ann | Director | 232,284 | 2026-06-02 | A |
| Swisher Daniel N JR | Director | 207,045 | 2025-06-03 | A |
| MOORE TIMOTHY L. | Director | 205,073 | 2025-06-03 | A |
| Shan Hua | Director | 192,386 | 2026-06-02 | A |
| Gregory Dean A. | Director | 146,725 | 2026-06-02 | A |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-08-17 | Jensen Chrystal | Open-market sale | 30,000 | $2.98 | 936,657 |
| 2026-07-16 | Jayaraman Vivek K | Open-market sale | 16,666 | $3.16 | 2,232,211 |
| 2026-07-01 | Jayaraman Vivek K | Grant / award (derivative) | 369,686 | $0.00 | 369,686 |
| 2026-07-01 | Jayaraman Vivek K | Grant / award | 554,529 | $0.00 | 2,248,877 |
| 2026-06-30 | Greenman William Mariner | Open-market sale | 101,919 | $2.94 | 5,053,036 |
| 2026-06-30 | Greenman William Mariner | Grant / award | 192,500 | $0.00 | 5,154,955 |
| 2026-06-30 | Jensen Chrystal | Open-market sale | 24,329 | $2.94 | 966,657 |
| 2026-06-30 | Jensen Chrystal | Grant / award | 55,000 | $0.00 | 990,986 |
| 2026-06-30 | Jayaraman Vivek K | Open-market sale | 42,359 | $2.94 | 1,694,348 |
| 2026-06-30 | Jayaraman Vivek K | Grant / award | 80,000 | $0.00 | 1,736,707 |
| 2026-06-30 | Green Kevin Dennis | Open-market sale | 33,676 | $2.94 | 1,062,188 |
| 2026-06-30 | Green Kevin Dennis | Grant / award | 63,600 | $0.00 | 1,095,864 |
| 2026-06-09 | BJERKHOLT ERIC | Open-market sale | 20,454 | $2.60 | 261,679 |
| 2026-06-02 | Shan Hua | Grant / award | 60,000 | $0.00 | 192,386 |
| 2026-06-02 | Gregory Dean A. | Grant / award | 60,000 | $0.00 | 146,725 |
| 2026-06-02 | Witney Frank | Grant / award | 60,000 | $0.00 | 340,059 |
| 2026-06-02 | NACHTSHEIM JAMI K | Grant / award | 60,000 | $0.00 | 268,362 |
| 2026-06-02 | BJERKHOLT ERIC | Grant / award | 60,000 | $0.00 | 282,133 |
| 2026-06-02 | Lucena Ann | Grant / award | 60,000 | $0.00 | 232,284 |
| 2026-05-29 | Jayaraman Vivek K | Open-market sale | 16,667 | $3.00 | 1,656,707 |
| 2026-05-01 | Jayaraman Vivek K | Open-market sale | 16,667 | $3.00 | 1,673,374 |
| 2026-04-01 | Jensen Chrystal | Grant / award | 200,000 | $0.00 | 1,146,131 |
| 2026-04-01 | Green Kevin Dennis | Grant / award | 200,000 | $0.00 | 1,240,551 |
| 2026-03-12 | Benjamin Richard J | Open-market sale | 101,740 | $1.66 | 777,361 |
| 2026-03-12 | Green Kevin Dennis | Open-market sale | 127,544 | $1.66 | 1,040,551 |
| 2026-03-12 | Greenman William Mariner | Open-market sale | 447,757 | $1.66 | 4,998,493 |
| 2026-03-12 | Jayaraman Vivek K | Open-market sale | 165,200 | $1.66 | 1,747,674 |
| 2026-03-09 | Benjamin Richard J | Open-market sale | 40,426 | $1.88 | 879,101 |
| 2026-03-09 | Benjamin Richard J | Open-market sale | 40,426 | $1.88 | 879,101 |
| 2026-03-06 | Greenman William Mariner | Open-market sale | 78,187 | $2.01 | 5,446,250 |
| 2026-03-06 | Jayaraman Vivek K | Open-market sale | 34,094 | $2.01 | 1,912,874 |
| 2026-03-06 | Jensen Chrystal | Open-market sale | 30,845 | $2.01 | 1,059,139 |
| 2026-03-06 | Benjamin Richard J | Open-market sale | 24,235 | $2.01 | 919,527 |
| 2026-03-06 | Green Kevin Dennis | Open-market sale | 27,796 | $2.01 | 1,168,095 |
| 2026-03-06 | Benjamin Richard J | Open-market sale | 24,235 | $2.01 | 919,527 |
| 2026-03-05 | Greenman William Mariner | Grant / award | 193,270 | $0.00 | 5,524,437 |
| 2026-03-05 | Jayaraman Vivek K | Grant / award | 80,320 | $0.00 | 1,946,968 |
| 2026-03-05 | Jensen Chrystal | Grant / award | 55,220 | $0.00 | 1,083,514 |
| 2026-03-05 | Benjamin Richard J | Open-market sale | 61,233 | $2.06 | 943,762 |
| 2026-03-05 | Benjamin Richard J | Grant / award | 55,220 | $0.00 | 1,004,995 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.