GT Biopharma's three largest insider shareholders as of March 23, 2026 are Michael Martin Breen (Executive Chairman/Interim Ceo, 856.22K shares), Manu Ohri (Cfo Secretary, 300.00K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Michael Martin Breen | Executive Chairman/Interim Ceo | 856,218 | 0 | 15 Aug, 2023 |
| Manu Ohri | Cfo Secretary | 0 | 300,000 | 15 Aug, 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 |
|---|---|---|---|---|---|---|---|---|
| 04 Sep, 2025 | Alan Louis Urban | Option to purchase Common Stock | A | 50,000 | $0.00 | 50,000 | D | A |
| 04 Sep, 2025 | Charles J Casamento | Option to purchase Common Stock | A | 62,500 | $0.00 | 62,500 | D | A |
| 04 Sep, 2025 | David C. Mun-Gavin | Option to purchase Common Stock | A | 31,250 | $0.00 | 31,250 | D | A |
| 04 Sep, 2025 | Hilary Kramer | Option to purchase Common Stock | A | 31,250 | $0.00 | 31,250 | D | A |
| 04 Sep, 2025 | Michael Martin Breen | Option to purchase Common Stock | A | 100,000 | $0.00 | 100,000 | D | A |
| 04 Sep, 2025 | Alan Louis Urban | Option to purchase Common Stock | A | 50,000 | $0.00 | 50,000 | D | A |
| 04 Sep, 2025 | Michael Martin Breen | Option to purchase Common Stock | A | 100,000 | $0.00 | 100,000 | D | A |
| 04 Sep, 2025 | Michael Martin Breen | Option to purchase Common Stock | A | 100,000 | $0.00 | 100,000 | D | A |
| 17 Oct, 2024 | Alan Louis Urban | Option to purchase Common Stock | A | 23,335 | $0.00 | 23,335 | D | A |
| 11 Aug, 2023 | Michael Martin Breen | Common Stock | A | 200,000 | $0.29 | 856,218 | D | A |
| 11 Aug, 2023 | Manu Ohri | Common Stock | A | 200,000 | $0.29 | 200,000 | D | A |
| 11 Aug, 2023 | Manu Ohri | Common Stock | D | 200,000 | $0.29 | 0 | D | J |
| 11 Aug, 2023 | Manu Ohri | Common Stock | A | 200,000 | $0.29 | 300,000 | I | J |
| 16 Jun, 2023 | Charles J Casamento | Option to purchase Common Stock | A | 500,000 | $0.00 | 500,000 | D | A |
| 11 Apr, 2023 | Michael Martin Breen | Common Stock | A | 50,000 | $0.50 | 656,218 | D | P |
| 06 Apr, 2023 | Manu Ohri | Common Stock | A | 50,000 | $0.50 | 50,000 | I | P |
| 27 Jan, 2023 | Manu Ohri | Option to purchase Common Stock | A | 500,000 | $0.00 | 500,000 | D | A |
| 27 Jan, 2023 | Rajesh C Md Shrotriya | Option to purchase Common Stock | A | 500,000 | $0.00 | 500,000 | D | A |
| 27 Jan, 2023 | Bruce Wendel | Option to purchase Common Stock | A | 500,000 | $0.00 | 500,000 | D | A |
| 27 Jan, 2023 | Michael Martin Breen | Option to purchase Common Stock | A | 500,000 | $0.00 | 500,000 | D | A |