As of April 22, 2026, the three largest insider holders of CERS are William Mariner Greenman (President And Ceo, 5.00Mn shares), William Mariner Greenman (President And Ceo, 3.24Mn shares), Laurence M Corash (Chief Scientific Officer, 2.35Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| William Mariner Greenman | President And Ceo | 4,998,493 | 0 | 16 Mar, 2026 |
| William Mariner Greenman | President And Ceo | 3,242,541 | 0 | 05 Mar, 2024 |
| Laurence M Corash | Chief Scientific Officer | 2,351,501 | 0 | 05 Mar, 2024 |
| Laurence M Corash | Chief Scientific Officer | 2,339,740 | 0 | 14 Mar, 2024 |
| Vivek K Jayaraman | Chief Operating Officer | 1,747,674 | 0 | 16 Mar, 2026 |
| Kevin Dennis Green | Chief Financial Officer | 1,240,551 | 0 | 03 Apr, 2026 |
| Chrystal Jensen | Chief Legal Officer | 1,146,131 | 0 | 03 Apr, 2026 |
| Vivek K Jayaraman | Chief Operating Officer | 906,694 | 0 | 05 Mar, 2024 |
| Richard J Benjamin | Chief Medical Officer | 777,361 | 0 | 16 Mar, 2026 |
| Kevin Dennis Green | Chief Financial Officer | 639,639 | 0 | 05 Mar, 2024 |
| Chrystal Menard | Chief Legal Officer | 509,530 | 0 | 05 Mar, 2024 |
| Richard J Benjamin | Chief Medical Officer | 507,439 | 0 | 05 Mar, 2024 |
| Carol Moore | Svp Reg. Quality | 499,576 | 0 | 05 Mar, 2024 |
| Carol Moore | Svp Reg. Quality | 490,623 | 0 | 14 Mar, 2024 |
| Frank Witney | - | 280,059 | 0 | 04 Jun, 2025 |
| Eric Bjerkholt | - | 222,133 | 0 | 04 Jun, 2025 |
| Jami K Nachtsheim | - | 208,362 | 0 | 04 Jun, 2025 |
| Daniel N Jr Swisher | - | 207,045 | 0 | 04 Jun, 2025 |
| Timothy L. Moore | - | 205,073 | 0 | 04 Jun, 2025 |
| Ann Lucena | - | 172,284 | 0 | 04 Jun, 2025 |
| Gail Schulze | - | 163,420 | 0 | 06 Jun, 2024 |
| Hua Shan | - | 132,386 | 0 | 04 Jun, 2025 |
| Dean A. Gregory | - | 86,725 | 0 | 25 Aug, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 01 Apr, 2026 | Chrystal Jensen | Common Stock | A | 200,000 | $0.00 | 1,146,131 | D | A |
| 01 Apr, 2026 | Kevin Dennis Green | Common Stock | A | 200,000 | $0.00 | 1,240,551 | D | A |
| 12 Mar, 2026 | William Mariner Greenman | Common Stock | D | 447,757 | $1.66 | 4,998,493 | D | S |
| 12 Mar, 2026 | Richard J Benjamin | Common Stock | D | 101,740 | $1.66 | 777,361 | D | S |
| 12 Mar, 2025 | Chrystal Jensen | Common Stock | D | 113,008 | $1.66 | 946,131 | D | S |
| 12 Mar, 2026 | Kevin Dennis Green | Common Stock | D | 127,544 | $1.66 | 1,040,551 | D | S |
| 12 Mar, 2026 | Vivek K Jayaraman | Common Stock | D | 165,200 | $1.66 | 1,747,674 | D | S |
| 05 Mar, 2026 | Richard J Benjamin | Common Stock | A | 55,220 | $0.00 | 1,004,995 | D | A |
| 05 Mar, 2026 | Richard J Benjamin | Common Stock | D | 61,233 | $2.06 | 943,762 | D | S |
| 06 Mar, 2026 | Richard J Benjamin | Common Stock | D | 24,235 | $2.01 | 919,527 | D | S |
| 09 Mar, 2026 | Richard J Benjamin | Common Stock | D | 40,426 | $1.88 | 879,101 | D | S |
| 05 Mar, 2026 | Richard J Benjamin | Common Stock | A | 55,220 | $0.00 | 1,004,995 | D | A |
| 05 Mar, 2026 | Chrystal Jensen | Common Stock | A | 55,220 | $0.00 | 1,083,514 | D | A |
| 05 Mar, 2026 | Vivek K Jayaraman | Common Stock | A | 80,320 | $0.00 | 1,946,968 | D | A |
| 05 Mar, 2026 | Kevin Dennis Green | Common Stock | A | 63,854 | $0.00 | 1,251,116 | D | A |
| 05 Mar, 2026 | William Mariner Greenman | Common Stock | A | 193,270 | $0.00 | 5,524,437 | D | A |
| 05 Mar, 2026 | Richard J Benjamin | Common Stock | D | 61,233 | $2.06 | 943,762 | D | S |
| 05 Mar, 2026 | Kevin Dennis Green | Common Stock | D | 55,225 | $2.06 | 1,195,891 | D | S |
| 06 Mar, 2026 | Chrystal Jensen | Common Stock | D | 30,845 | $2.01 | 1,059,139 | D | S |
| 06 Mar, 2026 | Vivek K Jayaraman | Common Stock | D | 34,094 | $2.01 | 1,912,874 | D | S |