Michael Martin Breen
Exec Chairman and Interim CEO at GT Biopharma Inc.
Sits on 2 boards. Last updated September 28, 2026
Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 7 years
- Director since
- 2023
7 years of board service in total across 2 boards, counting each seat separately. Longest: GT Biopharma Inc., 3 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
GT Biopharma Inc. August 14, 202694.8%
-
GT Biopharma Inc. June 28, 202389.5%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Aug 11, 2023 | GT Biopharma Inc. | Grant or award | +200,000 | $0.29 | $58,000 |
| May 3, 2023 | Prairie Operating Co. | Open-market purchase | +916,112 | $0.11 | $100,772 |
| May 3, 2023 | Prairie Operating Co. | Grant or award | +218,571 | $0.18 | $39,343 |
| Apr 11, 2023 | GT Biopharma Inc. | Open-market purchase | +50,000 | $0.50 | $25,000 |
Questions about Michael Martin Breen
What boards is Michael Martin Breen on?
Michael Martin Breen sits on the boards of GT Biopharma Inc. and Prairie Operating Co.
What company is Michael Martin Breen the CEO of?
Michael Martin Breen is Exec Chairman and Interim CEO of GT Biopharma Inc.
How long has Michael Martin Breen served on boards?
Our records show at least 7 years of board service across 2 boards, the earliest from 2023.
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