GT Biopharma GTBP Insider Ownership

NASDAQ GTBP
$0.28 -0.01 (-3.45%)
At close: Aug 20, 2026 · 4:00 PM EDT

Historic Insider Ownership Trends

GT Biopharma's three largest insider shareholders as of August 04, 2026 are Michael Martin Breen (Executive Chairman/Interim Ceo, 856.22K shares), Manu Ohri (Cfo Secretary, 300.00K shares), Manu Ohri (Cfo Secretary, 50.00K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Manu Ohri Cfo Secretary 0 300,000 15 Aug, 2023
Michael Martin Breen Executive Chairman/Interim Ceo 856,218 0 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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
04 Sep, 2025 Hilary Kramer Option to purchase Common Stock A 31,250 $0.00 31,250 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 Alan Louis Urban Option to purchase Common Stock A 50,000 $0.00 50,000 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 Hilary Kramer Option to purchase Common Stock A 31,250 $0.00 31,250 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 David C. Mun-Gavin Option to purchase Common Stock A 31,250 $0.00 31,250 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 Michael Martin Breen Option to purchase Common Stock A 100,000 $0.00 100,000 D A
04 Sep, 2025 Hilary Kramer Option to purchase Common Stock A 31,250 $0.00 31,250 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 Alan Louis Urban Option to purchase Common Stock A 50,000 $0.00 50,000 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
17 Oct, 2024 Alan Louis Urban Option to purchase Common Stock A 23,335 $0.00 23,335 D A
17 Oct, 2024 Alan Louis Urban Option to purchase Common Stock A 23,335 $0.00 23,335 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 Manu Ohri Common Stock A 200,000 $0.29 200,000 D A