Weiss Michael S
- SEC CIK
- 0001038977
No open-market purchases or sales filed in the past year.
Current role at each company
- FBIO Fortress Biotech, Inc.Executive Vice Chairmanas of Mar 20, 2026
- TGTX TG Therapeutics, Inc.CEOas of Jan 9, 2026
- CKPT Checkpoint Therapeutics, Inc.Directoras of May 30, 2025
- MBIO Mustang Bio, Inc.Directoras of Jul 7, 2023
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- –
- 0 filings
- Sold
- –
- 0 filings
- Net
- –
- Bought minus sold
- Companies
- 0
- With open-market trades
Trades
Every Form 4 that lists Weiss Michael S as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
FBIO Fortress Biotech, Inc.
Executive Vice Chairman3 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Nov 16, 2023 (view filing) | Nov 14 | 2 days | Weiss Michael SSee Remarks | PPurchaseCOMMON STOCK, PAR VALUE $0.001 | +147.1K | $1.70 | +$250.0K | +15.0%1.13M after | |
| Nov 16, 2023 (view filing) | Nov 14 | 2 days | Weiss Michael SSee Remarks | PPurchase | +147.1K | $0.00 | $0 | –147.1K after | Derivative |
| Feb 14, 2023 (view filing) | Feb 10 | 4 days | Weiss Michael SSee Remarks | PPurchaseCOMMON STOCK, PAR VALUE $0.001 | +1.20M | $0.84 | +$1.01M | +8.8%14.8M after |
TGTX TG Therapeutics, Inc.
CEO2 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 14, 2023 (view filing) | Aug 11 | 3 days | Weiss Michael SCEO and President | PPurchase | +100.0K | $10.13 | +$1.01M | +0.8%12.1M after | |
| Jan 7, 2022 (view filing) | Jan 4-5 | 3 daysLate | Weiss Michael SCEO and President | SSale | −68.2K | $18.80 | −$1.28M | −0.6%11.0M after | 2 lots |