As of August 04, 2026, GRI Bio's top three insider holders are Walter Marc Hertz (Chief Executive Officer, 13.77K shares), Albert Agro (Chief Medical Officer, 6.15K shares), Vipin Chaturvedi (Chief Scientific Officer, 6.15K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Albert Agro | Chief Medical Officer | 6,150 | 0 | 24 Apr, 2023 |
| Marella Thorell | - | 340 | 0 | 14 Dec, 2022 |
| Walter Marc Hertz | Chief Executive Officer | 13,768 | 0 | 24 Apr, 2023 |
| Vipin Chaturvedi | Chief Scientific Officer | 6,150 | 0 | 24 Apr, 2023 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 18 Sep, 2025 | David Leslie Szekeres | Stock Option (Right to Buy) | A | 39,897 | $0.00 | 1,425 | D | A |
| 18 Sep, 2025 | Walter Marc Hertz | Stock Option (Right to Buy) | A | 103,067 | $0.00 | 3,681 | D | A |
| 18 Sep, 2025 | Walter Marc Hertz | Stock Option (Right to Buy) | A | 103,067 | $0.00 | 3,681 | D | A |
| 18 Sep, 2025 | Leanne Kelly | Stock Option (Right to Buy) | A | 43,222 | $0.00 | 1,544 | D | A |
| 18 Sep, 2025 | Roelof Rongen | Stock Option (Right to Buy) | A | 23,605 | $0.00 | 843 | D | A |
| 18 Sep, 2025 | Roelof Rongen | Stock Option (Right to Buy) | A | 23,605 | $0.00 | 843 | D | A |
| 18 Sep, 2025 | Walter Marc Hertz | Stock Option (Right to Buy) | A | 103,067 | $0.00 | 3,681 | D | A |
| 18 Sep, 2025 | Roelof Rongen | Stock Option (Right to Buy) | A | 23,605 | $0.00 | 843 | D | A |
| 18 Sep, 2025 | Vipin Chaturvedi | Stock Option (Right to Buy) | A | 43,222 | $0.00 | 1,544 | D | A |
| 18 Sep, 2025 | David Charles Baker | Stock Option (Right to Buy) | A | 23,605 | $0.00 | 843 | D | A |
| 18 Sep, 2025 | David Leslie Szekeres | Stock Option (Right to Buy) | A | 39,897 | $0.00 | 1,425 | D | A |
| 18 Sep, 2025 | David Leslie Szekeres | Stock Option (Right to Buy) | A | 39,897 | $0.00 | 1,425 | D | A |
| 18 Sep, 2025 | Camilla V Simpson | Stock Option (Right to Buy) | A | 23,605 | $0.00 | 843 | D | A |
| 26 Aug, 2025 | Roelof Rongen | Stock Option (Right to Buy) | A | 5,994 | $0.00 | 214 | D | A |
| 26 Aug, 2025 | David Leslie Szekeres | Stock Option (Right to Buy) | A | 10,276 | $0.00 | 367 | D | A |
| 26 Aug, 2025 | Walter Marc Hertz | Stock Option (Right to Buy) | A | 26,688 | $0.00 | 953 | D | A |
| 26 Aug, 2025 | David Leslie Szekeres | Stock Option (Right to Buy) | A | 10,276 | $0.00 | 367 | D | A |
| 26 Aug, 2025 | Roelof Rongen | Stock Option (Right to Buy) | A | 5,994 | $0.00 | 214 | D | A |
| 26 Aug, 2025 | Walter Marc Hertz | Stock Option (Right to Buy) | A | 26,688 | $0.00 | 953 | D | A |
| 26 Aug, 2025 | David Charles Baker | Stock Option (Right to Buy) | A | 5,994 | $0.00 | 214 | D | A |