Weiss Michael S insider trades
Weiss Michael S has filed 23 Form 4s with the SEC that we hold, for Tg Therapeutics, INC. (TGTX) (CEO, Director), Fortress Biotech, Inc. (FBIO) (Executive Vice Chairman, Director), CKPT (Director) and Mustang Bio, INC. (MBIO) (Director). Across all of them we count 3 purchases worth $2.3M and 2 sales worth $1.3M reported on Form 4. None of these purchases or sales is dated in the last 12 months. The largest single trade was a purchase of 100,000 shares of Tg Therapeutics, INC. worth $1.0M, dated 2023-08-11. The first filing on our record is dated 2021-07-08 and the latest 2026-03-20.
Tg Therapeutics, INC. (TGTX)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2022-01-04 | S, sale reported on Form 4 | 37,549 | $720.9K | 2022-01-07 |
| 2022-01-05 | S, sale reported on Form 4 | 30,671 | $561.6K | 2022-01-07 |
| 2023-08-11 | P, purchase reported on Form 4 | 100,000 | $1.0M | 2023-08-14 |
Fortress Biotech, Inc. (FBIO)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2023-02-10 | P, purchase reported on Form 4 | 1,197,604 | $1.0M | 2023-02-14 |
| 2023-11-14 | P, purchase reported on Form 4 | 147,058 | $250.0K | 2023-11-16 |
CKPT
No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.
Mustang Bio, INC. (MBIO)
No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.
Counted from the Form 4 filings this reporting owner (SEC CIK 1038977) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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