Data spanning the past 90 days through February 19, 2026 reveals that Cel Sci's three principal insider shareholders consist of Chief Executive Officer Geert R Kersten (159.02K shares), Chief Financial Officer Patricia B Prichep (12.03K shares), Chief Scientific Officer Eyal Talor (6.26K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Geert R Kersten | Chief Executive Officer | 159,021 | 26 Jan, 2026 |
| Daniel H Zimmerman | Senior Vice President | 4,007 | 03 Oct, 2022 |
| John Cipriano | Senior Vice President | 2,103 | 23 Apr, 2021 |
| Peter R Young | 964 | 29 Jun, 2021 | |
| Patricia B Prichep | Chief Financial Officer | 12,028 | 05 Jan, 2026 |
| Eyal Talor | Chief Scientific Officer | 6,264 | 05 Jan, 2026 |
| Bruno Jean-Marie Baillavoine | 199 | 07 Jul, 2021 | |
| Robert Eugene Watson | 3,733 | 29 Jul, 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 |
|---|---|---|---|---|---|---|---|---|
| 22 Jan, 2026 | Geert R Kersten | Common Stock | A | 38,023 | $5.26 | 120,815 | D | P |
| 31 Dec, 2025 | Geert R Kersten | Common Stock | A | 998 | $5.26 | 82,792 | D | A |
| 31 Dec, 2025 | Patricia B Prichep | Common Stock | A | 815 | $5.26 | 12,028 | D | A |
| 31 Dec, 2025 | Eyal Talor | - | - | 6,264 | D | |||
| 31 Dec, 2025 | Eyal Talor | Common Stock | A | 456 | $5.26 | 6,264 | D | A |
| 04 Dec, 2025 | Geert R Kersten | Common Stock | A | 8,389 | $5.96 | 81,794 | D | P |
| 30 Sep, 2025 | Geert R Kersten | Common Stock | A | 570 | $9.20 | 73,405 | D | A |
| 30 Sep, 2025 | Patricia B Prichep | Common Stock | A | 466 | $9.20 | 11,213 | D | A |
| 30 Sep, 2025 | Eyal Talor | Common Stock | A | 260 | $9.20 | 5,808 | D | A |
| 25 Jul, 2025 | Geert R Kersten | Common Stock | A | 29,197 | $6.85 | 72,835 | D | P |
| 25 Jul, 2025 | Robert Eugene Watson | - | - | 3,733 | D | |||
| 25 Jul, 2025 | Robert Eugene Watson | Common Stock | A | 2,919 | $6.85 | 3,733 | D | P |
| 30 Jun, 2025 | Geert R Kersten | Common Stock | A | 2,292 | $2.29 | 43,638 | D | A |
| 30 Jun, 2025 | Patricia B Prichep | Common Stock | A | 1,873 | $2.29 | 10,747 | D | A |
| 30 Jun, 2025 | Eyal Talor | Common Stock | A | 1,048 | $2.29 | 5,548 | D | A |
| 31 Mar, 2025 | Geert R Kersten | Common Stock | A | 22,786 | $0.23 | 41,342 | D | A |
| 31 Mar, 2025 | Patricia B Prichep | Common Stock | A | 15,432 | $0.23 | 8,873 | D | A |
| 31 Mar, 2025 | Eyal Talor | Common Stock | A | 10,416 | $0.23 | 4,500 | D | A |
| 31 Dec, 2024 | Geert R Kersten | Common Stock | A | 12,940 | $0.40 | 40,582 | D | A |
| 31 Dec, 2024 | Patricia B Prichep | Common Stock | A | 10,727 | $0.40 | 8,359 | D | A |