Per Business Quant data, GT Biopharma insiders hold 1.14K shares in total based on their latest Form 4 filings, unchanged from the end of Q2 2026 and Q3 2025 (split-adjusted).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Michael Martin Breen | Executive Chairman/Interim Ceo | 1,142 | 0 | 1,142 | 74.1% | 15 Aug, 2023 |
| 2 | Manu Ohri | Cfo Secretary | 0 | 400 | 400 | 25.9% | 15 Aug, 2023 |
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 |
|---|---|---|---|---|---|---|---|---|
| 04 Sep, 2025 | Hilary Kramer | Director | Acquired A | 31,250 | $0.00 | $0 | 1,250 | Direct |
| 04 Sep, 2025 | Alan Louis Urban | Chief Financial Officer | Acquired A | 50,000 | $0.00 | $0 | 2,000 | Direct |
| 04 Sep, 2025 | Michael Martin Breen | Ceo And Director | Acquired A | 100,000 | $0.00 | $0 | 4,000 | Direct |
| 04 Sep, 2025 | Charles J Casamento | Director | Acquired A | 62,500 | $0.00 | $0 | 2,500 | Direct |
| 04 Sep, 2025 | David C. Mun-Gavin | Director | Acquired A | 31,250 | $0.00 | $0 | 1,250 | Direct |
| 04 Sep, 2025 | Michael Martin Breen | Ceo And Director | Acquired A | 100,000 | $0.00 | $0 | 4,000 | Direct |
| 04 Sep, 2025 | Alan Louis Urban | Chief Financial Officer | Acquired A | 50,000 | $0.00 | $0 | 2,000 | Direct |
| 04 Sep, 2025 | Michael Martin Breen | Ceo And Director | Acquired A | 100,000 | $0.00 | $0 | 4,000 | Direct |
| 17 Oct, 2024 | Alan Louis Urban | Chief Financial Officer | Acquired A | 23,335 | $0.00 | $0 | 933 | Direct |
| 11 Aug, 2023 | Manu Ohri | Cfo Secretary | Acquired A | 200,000 | $215.27 | $43.05Mn | 267 | Direct |
| 11 Aug, 2023 | Michael Martin Breen | Executive Chairman/Interim Ceo | Acquired A | 200,000 | $215.27 | $43.05Mn | 1,142 | Direct |
| 11 Aug, 2023 | Manu Ohri | Cfo Secretary | Disposed J | 200,000 | $215.27 | $43.05Mn | 0 | Direct |
| 11 Aug, 2023 | Manu Ohri | Cfo Secretary | Acquired J | 200,000 | $215.27 | $43.05Mn | 400 | Indirect |
| 16 Jun, 2023 | Charles J Casamento | Director | Acquired A | 500,000 | $0.00 | $0 | 667 | Direct |
| 11 Apr, 2023 | Michael Martin Breen | Executive Chairman/Interim Ceo | Acquired P | 50,000 | $375.04 | $18.75Mn | 875 | Direct |
| 06 Apr, 2023 | Manu Ohri | Cfo Secretary | Acquired P | 50,000 | $375.04 | $18.75Mn | 67 | Indirect |
| 27 Jan, 2023 | Michael Martin Breen | Exec Chairman And Interim Ceo | Acquired A | 500,000 | $0.00 | $0 | 667 | Direct |
| 27 Jan, 2023 | Manu Ohri | Chief Financial Officer | Acquired A | 500,000 | $0.00 | $0 | 667 | Direct |
| 27 Jan, 2023 | Rajesh C Md Shrotriya | Director | Acquired A | 500,000 | $0.00 | $0 | 667 | Direct |
| 27 Jan, 2023 | Bruce Wendel | Director | Acquired A | 500,000 | $0.00 | $0 | 667 | Direct |