Tg Therapeutics's top three insider shareholders as of September 22, 2026 are Michael S Weiss (Ceo And President, 12.07Mn shares), Michael S Weiss (Ceo, 9.78Mn shares), Sean A Power (Cfo, 798.11K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Michael S Weiss | Ceo | 21,851,107 | 0 | 21,851,107 | 89.7% | 09 Jan, 2026 |
| 2 | Sean A Power | Cfo | 1,452,947 | 0 | 1,452,947 | 6.0% | 09 Jan, 2026 |
| 3 | Kenneth Hoberman | Director | 279,653 | 0 | 279,653 | 1.1% | 16 Jun, 2025 |
| 4 | Yann Echelard | Director | 223,816 | 0 | 223,816 | 0.9% | 25 Nov, 2025 |
| 5 | Daniel Hume | Director | 192,748 | 0 | 192,748 | 0.8% | 16 Jun, 2025 |
| 6 | Sagar Lonial | Director | 187,939 | 0 | 187,939 | 0.8% | 12 Sep, 2025 |
| 7 | Laurence N Charney | Director | 168,640 | 0 | 168,640 | 0.7% | 14 Sep, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 06 Aug, 2026 | Laurence N Charney | Director | Disposed G | 5,100 | $0.00 | $0 | 174,590 | Direct |
| 07 Aug, 2026 | Laurence N Charney | Director | Disposed G | 500 | $0.00 | $0 | 174,090 | Direct |
| 07 Aug, 2026 | Laurence N Charney | Director | Disposed G | 450 | $0.00 | $0 | 173,640 | Direct |
| 11 Jun, 2026 | Kenneth Hoberman | Director | Acquired A | 8,325 | $0.00 | $0 | 8,325 | Direct |
| 11 Jun, 2026 | Laurence N Charney | Director | Acquired A | 8,325 | $0.00 | $0 | 8,325 | Direct |
| 11 Jun, 2026 | Yann Echelard | Director | Acquired A | 8,325 | $0.00 | $0 | 8,325 | Direct |
| 11 Jun, 2026 | Daniel Hume | Director | Acquired A | 8,325 | $0.00 | $0 | 8,325 | Direct |
| 11 Jun, 2026 | Sagar Lonial | Director | Acquired A | 8,325 | $0.00 | $0 | 8,325 | Direct |
| 28 Jan, 2026 | Laurence N Charney | Director | Disposed G | 30,000 | $0.00 | $0 | 192,887 | Direct |
| 29 Jan, 2026 | Laurence N Charney | Director | Disposed G | 13,197 | $0.00 | $0 | 179,690 | Direct |
| 08 Jan, 2026 | Michael S Weiss | Ceo | Acquired A | 622,000 | $0.00 | $0 | 9,778,086 | Direct |
| 08 Jan, 2026 | Sean A Power | Cfo | Acquired A | 90,000 | $0.00 | $0 | 798,111 | Direct |
| 24 Nov, 2025 | Yann Echelard | Director | Disposed S | 5,000 | $32.57 | $162.85K | 223,816 | Direct |
| 05 Nov, 2025 | Michael S Weiss | Ceo | Disposed G | 3,865,126 | $0.00 | $0 | 9,959,803 | Direct |
| 05 Nov, 2025 | Michael S Weiss | Ceo | Disposed G | 803,717 | $0.00 | $0 | 9,156,086 | Direct |
| 11 Sep, 2025 | Sagar Lonial | Director | Disposed S | 20,852 | $32.24 | $672.27K | 94,061 | Direct |
| 12 Jun, 2025 | Daniel Hume | Director | Acquired A | 14,718 | $0.00 | $0 | 192,748 | Direct |
| 12 Jun, 2025 | Kenneth Hoberman | Director | Acquired A | 14,718 | $0.00 | $0 | 279,653 | Direct |
| 12 Jun, 2025 | Yann Echelard | Director | Acquired A | 14,718 | $0.00 | $0 | 238,816 | Direct |
| 12 Jun, 2025 | Laurence N Charney | Director | Acquired A | 21,408 | $0.00 | $0 | 222,887 | Direct |