As of September 29, 2026, Chemomab Therapeutics's top three insider holders are Israel Gp Ltd. Orbimed (TenPercentOwner, 2.24Mn shares), George Adi Mor (Chief Scientific Officer, 257.25K shares), George Adi Mor (Chief Scientific Officer, 251.15K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Israel Gp Ltd. Orbimed | TenPercentOwner | 0 | 2,241,274 | 2,241,274 | 97.5% | 05 Jan, 2023 |
| 2 | Neil Harris Cohen | Director | 33,000 | 0 | 33,000 | 1.4% | 31 Aug, 2026 |
| 3 | George Adi Mor | Chief Executive Officer | 18,750 | 0 | 18,750 | 0.8% | 01 Jun, 2026 |
| 4 | Dale R Pfost | Chief Executive Officer | 2,500 | 0 | 2,500 | 0.1% | 15 Mar, 2022 |
| 5 | Donald Marvin | Executive Vp, Cfo Coo | 1,500 | 0 | 1,500 | 0.1% | 21 Mar, 2022 |
| 6 | Joel Michael Maryles | Director | 1,433 | 0 | 1,433 | 0.1% | 25 May, 2022 |
| 7 | Nissim Darvish | Director | 1,200 | 0 | 1,200 | 0.1% | 14 Mar, 2022 |
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 |
|---|---|---|---|---|---|---|---|---|
| 27 Aug, 2026 | Neil Harris Cohen | Director | Disposed S | 1,304 | $2.85 | $3.72K | 34,000 | Direct |
| 28 Aug, 2026 | Neil Harris Cohen | Director | Disposed S | 1,000 | $2.80 | $2.80K | 33,000 | Direct |
| 16 Jul, 2020 | Neil Harris Cohen | Director | Acquired A | 172 | $0.00 | $0 | 11 | Direct |
| 19 Apr, 2021 | Neil Harris Cohen | Director | Acquired A | 2,971 | $0.00 | $0 | 3,143 | Direct |
| 07 Mar, 2022 | Neil Harris Cohen | Director | Acquired A | 1,705 | $0.00 | $0 | 4,848 | Direct |
| 21 Mar, 2023 | Neil Harris Cohen | Director | Acquired A | 1,714 | $0.00 | $0 | 6,562 | Direct |
| 18 Mar, 2024 | Neil Harris Cohen | Director | Acquired A | 2,520 | $0.00 | $0 | 9,082 | Direct |
| 16 Mar, 2025 | Neil Harris Cohen | Director | Acquired A | 3,821 | $0.00 | $0 | 12,903 | Direct |
| 16 Mar, 2026 | Neil Harris Cohen | Director | Acquired A | 5,172 | $0.00 | $0 | 18,075 | Direct |
| 29 May, 2026 | George Adi Mor | Chief Executive Officer | Disposed P | 4,878 | $2.05 | $10.00K | 134,205 | Direct |
| 29 May, 2026 | George Adi Mor | Chief Executive Officer | Disposed P | 4,926 | $2.08 | $10.25K | 139,131 | Direct |
| 29 May, 2026 | George Adi Mor | Chief Executive Officer | Disposed J | 31,712 | — | — | 31,712 | Direct |
| 29 May, 2026 | George Adi Mor | Chief Executive Officer | Disposed J | 18,750 | — | — | 18,750 | Direct |
| 14 Jun, 2023 | Nissim Darvish | Director | Acquired A | 20,572 | $0.00 | $0 | 20,572 | Direct |
| 16 Mar, 2023 | Nissim Darvish | Director | Acquired A | 6,857 | $0.00 | $0 | 6,857 | Direct |
| 07 Mar, 2022 | Nissim Darvish | Director | Acquired A | 6,820 | $0.00 | $0 | 6,820 | Direct |
| 19 Apr, 2021 | Nissim Darvish | Director | Acquired A | 11,884 | $0.00 | $0 | 11,884 | Direct |
| 28 Oct, 2016 | Nissim Darvish | Director | Acquired A | 10,123 | $0.00 | $0 | 633 | Direct |
| 16 Jun, 2023 | Jill M. Quigley | Director | Acquired A | 6,857 | $0.00 | $0 | 20,497 | Direct |
| 16 Jun, 2022 | Jill M. Quigley | Director | Acquired A | 13,640 | $0.00 | $0 | 13,640 | Direct |