WEISS MICHAEL S
SEC insider (Form 3/4/5 filer). CIK 0001038977. Executive Vice Chairman at Fortress Biotech, Inc. (FBIO) and 2 other issuers. 10 reported Form 4/5 transactions since Sep 2024; latest on Mar 18, 2026. Located in BAY HARBOR ISLANDS, FL.
Companies WEISS MICHAEL S has filed insider reports for
- Fortress Biotech, Inc. (FBIO): Director, Officer, Executive Vice Chairman
- TG THERAPEUTICS, INC. (TGTX): Director, Officer, CEO
- Checkpoint Therapeutics, Inc. (CKPT): Director
WEISS MICHAEL S
CIK: 0001038977
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (10 total)
- Mar 18, 2026FBIO
Fortress Biotech, Inc.
AwardDirect475.4K shares- - Jan 8, 2026TGTX
TG THERAPEUTICS, INC.
AwardDirect622K shares- - Nov 5, 2025TGTX
TG THERAPEUTICS, INC.
GiftDirect3.9M shares- - Nov 5, 2025TGTX
TG THERAPEUTICS, INC.
GiftDirect803.7K shares- - May 30, 2025CKPT
Checkpoint Therapeutics, Inc.
Tender OfferIndirect187K shares- - May 29, 2025CKPT
Checkpoint Therapeutics, Inc.
AwardDirect50K shares at avg. $1.29$65K - May 28, 2025CKPT
Checkpoint Therapeutics, Inc.
AwardIndirect12.2K shares- - Jan 29, 2025TGTX
TG THERAPEUTICS, INC.
AwardDirect750K shares- - Jan 1, 2025FBIO
Fortress Biotech, Inc.
AwardDirect454.2K shares- - Dec 13, 2024CKPT
Checkpoint Therapeutics, Inc.
AwardIndirect12.6K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Mar 18, 2026 |  FBIO Fortress Biotech, Inc. | Award | 475,424 | - | $0 | Direct |
| Jan 8, 2026 |  TGTX TG THERAPEUTICS, INC. | Award | 622,000 | - | $0 | Direct |
| Nov 5, 2025 | TGTX TG THERAPEUTICS, INC. | Gift | 3,865,126 | - | - | Direct |
| Nov 5, 2025 | TGTX TG THERAPEUTICS, INC. | Gift | 803,717 | - | - | Direct |
| May 30, 2025 |  CKPT Checkpoint Therapeutics, Inc. | Tender Offer | 187,007 | - | - | Indirect |
| May 29, 2025 | CKPT Checkpoint Therapeutics, Inc. | Award | 50,000 | $1.29 | $64,500 | Direct |
| May 28, 2025 | CKPT Checkpoint Therapeutics, Inc. | Award | 12,195 | - | - | Indirect |
| Jan 29, 2025 | TGTX TG THERAPEUTICS, INC. | Award | 750,000 | - | $0 | Direct |
| Jan 1, 2025 | FBIO Fortress Biotech, Inc. | Award | 454,153 | - | $0 | Direct |
| Dec 13, 2024 | CKPT Checkpoint Therapeutics, Inc. | Award | 12,638 | - | $0 | Indirect |
1-10 of 10 transactions