Fortress Biotech, Inc.
SEC insider (Form 3/4/5 filer). CIK 0001429260. 10% Owner at AVENUE THERAPEUTICS, INC. (ATXI) and 2 other issuers. 11 reported Form 4/5 transactions since Sep 2024; latest on Jan 2, 2026. Located in BAY HARBOR ISLANDS, FL.
Companies Fortress Biotech, Inc. has filed insider reports for
- AVENUE THERAPEUTICS, INC. (ATXI): 10% Owner
- MUSTANG BIO, INC. (MBIO): 10% Owner
- Checkpoint Therapeutics, Inc. (CKPT): 10% Owner
Fortress Biotech, Inc.
CIK: 0001429260
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 (11 total)
- Jan 2, 2026ATXI
AVENUE THERAPEUTICS, INC.
AwardDirect111.2K shares- - Jan 2, 2026MBIO
MUSTANG BIO, INC.
AwardDirect278.4K shares- - Sep 29, 2025MBIO
MUSTANG BIO, INC.
AwardDirect59.3K shares- - May 30, 2025CKPT
Checkpoint Therapeutics, Inc.
DispositionDirect6.1M shares at avg. $4.10$25.1M - May 29, 2025CKPT
Checkpoint Therapeutics, Inc.
SaleDirect100K shares at avg. $1.29$129K - Mar 31, 2025MBIO
MUSTANG BIO, INC.
AwardDirect67.8K shares- - Mar 31, 2025ATXI
AVENUE THERAPEUTICS, INC.
AwardDirect33.7K shares- - Feb 26, 2025CKPT
Checkpoint Therapeutics, Inc.
AwardDirect18.5K shares- - Jan 1, 2025CKPT
Checkpoint Therapeutics, Inc.
AwardDirect2.4M shares- - Dec 31, 2024CKPT
Checkpoint Therapeutics, Inc.
AwardDirect81.4K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jan 2, 2026 |  ATXI AVENUE THERAPEUTICS, INC. | Award | 111,209 | - | $0 | Direct |
| Jan 2, 2026 |  MBIO MUSTANG BIO, INC. | Award | 278,385 | - | $0 | Direct |
| Sep 29, 2025 | MBIO MUSTANG BIO, INC. | Award | 59,334 | - | - | Direct |
| May 30, 2025 |  CKPT Checkpoint Therapeutics, Inc. | Disposition | 6,122,249 | $4.10 | $25,101,221 | Direct |
| May 29, 2025 | CKPT Checkpoint Therapeutics, Inc. | Sale | 100,000 | $1.29 | $129,000 | Direct |
| Mar 31, 2025 | MBIO MUSTANG BIO, INC. | Award | 67,806 | - | - | Direct |
| Mar 31, 2025 | ATXI AVENUE THERAPEUTICS, INC. | Award | 33,724 | - | - | Direct |
| Feb 26, 2025 | CKPT Checkpoint Therapeutics, Inc. | Award | 18,500 | - | - | Direct |
| Jan 1, 2025 | CKPT Checkpoint Therapeutics, Inc. | Award | 2,386,808 | - | $0 | Direct |
| Dec 31, 2024 | CKPT Checkpoint Therapeutics, Inc. | Award | 81,407 | - | $0 | Direct |
1-10 of 11 transactions