Breen Michael Martin has filed 11 insider transactions across 2 companies since October 2018.
Most recent transaction: a grant/award of 100000 shares of GT Biopharma, Inc. ($GTBP) on September 04, 2025.
Activity breakdown: 2 open-market purchases and 0 sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sept. 4, 2025 | GT Biopharma, Inc. | $GTBP | Breen Michael Martin | CEO and Director | A | Option to purchase Common Stock | 100000 | $0.00 | 100,000.0000 | 2,234,328 | 9999.99% | 4.48% |
| Sept. 4, 2025 | GT Biopharma, Inc. | $GTBP | Breen Michael Martin | CEO and Director | A | Option to purchase Common Stock | 100000 | $0.00 | 100,000.0000 | 2,234,328 | 9999.99% | 4.48% |
| Sept. 4, 2025 | GT Biopharma, Inc. | $GTBP | Breen Michael Martin | CEO and Director | A | Option to purchase Common Stock | 100000 | $0.00 | 100,000.0000 | 2,234,328 | 9999.99% | 4.48% |
| Aug. 11, 2023 | GT Biopharma, Inc. | $GTBP | Breen Michael Martin | Executive Chairman/Interim CEO | A | Common Stock | 200000 | $0.29 | 856,218.0000 | 0 | 30.48% | 0.00% |
| Aug. 3, 2020 | Prairie Operating Co. | $PROP | Breen Michael Martin | Director | A | Stock Option (Right to Buy | 37500 | $0.00 | 67,500.0000 | 0 | 125.00% | 0.00% |
| Oct. 16, 2018 | Prairie Operating Co. | $PROP | Breen Michael Martin | Director | A | Stock Option (Right to Buy) | 15000 | $0.00 | 15,000.0000 | 0 | 9999.99% | 0.00% |
| Sept. 12, 2019 | Prairie Operating Co. | $PROP | Breen Michael Martin | Director | A | Stock Option (Right to Buy | 15000 | $0.00 | 30,000.0000 | 0 | 100.00% | 0.00% |
| May 3, 2023 | Prairie Operating Co. | $PROP | Breen Michael Martin | Director | P | Common Stock | 916112 | $0.11 | 926,112.0000 | 0 | 9161.12% | 0.00% |
| May 3, 2023 | Prairie Operating Co. | $PROP | Breen Michael Martin | Director | A | Common Stock | 218571 | $0.18 | 1,144,683.0000 | 0 | 23.60% | 0.00% |
| April 11, 2023 | GT Biopharma, Inc. | $GTBP | Breen Michael Martin | Executive Chairman/Interim CEO | P | Common Stock | 50000 | $0.50 | 656,218.0000 | 0 | 8.25% | 0.00% |
| Jan. 27, 2023 | GT Biopharma, Inc. | $GTBP | Breen Michael Martin | Exec Chairman and Interim CEO | A | Option to purchase Common Stock | 500000 | $0.00 | 500,000.0000 | 0 | 9999.99% | 0.00% |