Fortress Biotech, Inc.

13D and 13G Filings

Issuer	Symbol	CUSIP	% of Class	Shares	Form	Filed
Avenue Therapeutics, Inc. 13D/A Amendment 8 ATXI · 05360L403	ATXI	05360L403	13.4%	439,955	13D/A Amendment 8	1/6/2026 Event 1/2/2026
Mustang Bio, Inc. 13D/A Amendment 7 MBIO · 62818Q302	MBIO	62818Q302	8.0%	537,243	13D/A Amendment 7	1/5/2026 Event 1/2/2026
Mustang Bio, Inc. 13D/A Amendment 6 MBIO · 62818Q302	MBIO	62818Q302	4.0%	258,858	13D/A Amendment 6	10/1/2025 Event 9/29/2025
Checkpoint Therapeutics, Inc. 13D/A Amendment 11 CKPT · 162828206	CKPT	162828206	0%	0	13D/A Amendment 11	6/3/2025 Event 5/30/2025
Mustang Bio, Inc. 13D/A Amendment 5 MBIO · 62818Q302	MBIO	62818Q302	7.9%	199,191	13D/A Amendment 5	4/2/2025 Event 3/31/2025
Avenue Therapeutics, Inc. 13D/A Amendment 7 ATXI · 05360L403	ATXI	05360L403	10.3%	328,746	13D/A Amendment 7	4/2/2025 Event 3/31/2025
Checkpoint Therapeutics, Inc. 13D/A Amendment 10 CKPT · 162828206	CKPT	162828206	11.2%	6,922,249	13D/A Amendment 10	3/11/2025 Event 3/9/2025
Mustang Bio, Inc. 13D/A Amendment 4 MBIO · 62818Q203	MBIO	62818Q203	12.4%	6,569,450	13D/A Amendment 4	1/3/2025 Event 12/31/2024
Checkpoint Therapeutics, Inc. 13D/A Amendment 9 CKPT · 162828206	CKPT	162828206	13.5%	6,903,749	13D/A Amendment 9	1/3/2025 Event 12/31/2024
Avenue Therapeutics, Inc. 13D/A Amendment 6 ATXI · 05360L403	ATXI	05360L403	13.8%	295,022	13D/A Amendment 6	1/3/2025 Event 12/31/2024

Includes filings since 12/18/2024, when the SEC began requiring structured 13D and 13G data.