WEISS MICHAEL S has filed 8 insider transactions across 2 companies since January 2024.
Most recent transaction: a grant/award of 475424 shares of Fortress Biotech, Inc. ($FBIO) on March 18, 2026.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 18, 2026 | Fortress Biotech, Inc. | $FBIO | WEISS MICHAEL S | Executive Vice Chairman | A | common stock, par value $0.001 | 475424 | $0.00 | 2,276,562.0000 | 33,100,961 | 26.40% | 1.44% |
| Jan. 8, 2026 | TG THERAPEUTICS, INC. | $TGTX | WEISS MICHAEL S | CEO | A | Common Stock | 622000 | $0.00 | 9,778,086.0000 | 162,102,373 | 6.79% | 0.38% |
| Nov. 5, 2025 | TG THERAPEUTICS, INC. | $TGTX | WEISS MICHAEL S | CEO | G | Common Stock | 3865126 | $0.00 | 9,959,803.0000 | 162,102,373 | 27.96% | 2.38% |
| Nov. 5, 2025 | TG THERAPEUTICS, INC. | $TGTX | WEISS MICHAEL S | CEO | G | Common Stock | 803717 | $0.00 | 9,156,086.0000 | 162,102,373 | 8.07% | 0.50% |
| Jan. 29, 2025 | TG THERAPEUTICS, INC. | $TGTX | WEISS MICHAEL S | CEO | A | Common Stock | 750000 | $0.00 | 13,824,929.0000 | 160,336,051 | 5.74% | 0.47% |
| Jan. 1, 2025 | Fortress Biotech, Inc. | $FBIO | WEISS MICHAEL S | Executive Vice Chairman | A | common stock, par value $0.001 | 454153 | $0.00 | 1,801,138.0000 | 20,784,334 | 33.72% | 2.19% |
| Jan. 6, 2024 | TG THERAPEUTICS, INC. | $TGTX | WEISS MICHAEL S | CEO | A | Common Stock | 1001908 | $0.00 | 13,074,929.0000 | 148,508,465 | 8.30% | 0.67% |
| Jan. 1, 2024 | Fortress Biotech, Inc. | $FBIO | WEISS MICHAEL S | See Remarks | A | COMMON STOCK, PAR VALUE $0.001 | 216465 | $0.00 | 1,346,985.0000 | 8,110,906 | 19.15% | 2.67% |