MBIO · Mustang Bio, Inc. · Shareholders & Ownership
Every disclosed holder of MBIO in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns MBIO
13F quarter Jun 30, 2026| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 539,006 | 7.11% |
| Insiders (Forms 3, 4, 5) | 0 | 0.00% |
| 13D/G-only blocks | 851,983 | 11.24% |
| Remaining | 6,186,517 | 81.64% |
| Registered funds (N-PORT, not summed) | 115,269 | 1.52% |
Shares outstanding: 7,577,506, the issuer's latest cover-page count restated onto today's split basis.
Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of MBIO
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
Fortress Biotech, Inc.
13D
CIK 1429260 · Holding company · Jan 2, 2026
|
537,243 | ||
| 1.1 |
|
536,577 | ||
| 2 |
Kestra Advisory Services, LLC
13F
CIK 1830819 · Unknown · Jun 30, 2026
|
196,991 | ||
| 3 |
|
185,527 | ||
| 4 |
ARMISTICE CAPITAL, LLC
13G
CIK 1601086 · Registered investment adviser · Mar 31, 2025
Rule 13d-1(b), qualified institution
|
129,213 | ||
| 5 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
|
84,745 | ||
| 6 |
Fidelity Extended Market Index Fund
Fund
S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
84,144 | ||
| 7 |
CITADEL ADVISORS LLC
13F
CIK 1423053 · Registered investment adviser · Jun 30, 2026
|
59,459 | ||
| 8 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
|
42,240 | ||
| 9 |
CFO4Life Group, LLC
13F
CIK 1706351 · Registered investment adviser · Jun 30, 2026
|
33,510 | ||
| 10 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
|
32,120 | ||
| 11 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
|
25,704 | ||
| 12 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
25,704 | ||
| 13 |
XTX Topco Ltd
13F
CIK 1828301 · Unknown · Jun 30, 2026
|
14,648 | ||
| 14 |
Virtu Financial LLC
13F
CIK 1533964 · Unknown · Jun 30, 2026
|
14,356 | ||
| 15 |
TWO SIGMA SECURITIES, LLC
13F
CIK 1450144 · Unknown · Jun 30, 2026
|
13,742 | ||
| 16 |
SUSQUEHANNA INTERNATIONAL GROUP, LLP
13F
CIK 1446194 · Unknown · Jun 30, 2026
|
13,664 | ||
| 17 |
Fidelity Series Total Market Index Fund
Fund
S000065248 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
4,184 | ||
| 18 |
UBS Group AG
13F
CIK 1610520 · Bank · Jun 30, 2026
|
4,155 | ||
| 19 |
Tower Research Capital LLC (TRC)
13F
CIK 1533421 · Unknown · Jun 30, 2026
|
1,895 | ||
| 20 |
Litchman Manuel MD
Insider
CIK 1709485 · Apr 24, 2026
Director, President, CEO and Interim CFO, issuer-wide, not summed
|
1,615 | ||
| 21 |
BARCLAYS PLC
13F
CIK 312069 · Bank · Jun 30, 2026
|
1,121 | ||
| 22 |
Fidelity Total Market Index Fund
Fund
S000006026 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
1,077 | ||
| 23 |
SBI Securities Co., Ltd.
13F
CIK 1851815 · Non-US institution · Jun 30, 2026
|
509 | ||
| 24 |
|
375 | ||
| 25 |
|
286 | ||
| 26 |
Nomura Healthcare Fund
Fund
S000018873 · Registered fund · Jun 30, 2026
Delaware Group Equity Funds IV, not summed
|
160 | ||
| 27 |
|
145 | ||
| 28 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
|
118 | ||
| 29 |
Cullen/Frost Bankers, Inc.
13F
CIK 39263 · Bank · Jun 30, 2026
|
13 | ||
| 30 |
BNP PARIBAS ARBITRAGE, SA
13F
CIK 1166588 · Non-US institution · Jun 30, 2026
|
6 | ||
| 31 |
NBC SECURITIES, INC.
13F
CIK 791540 · Registered investment adviser · Jun 30, 2026
|
3 | ||
| 32 |
DANSKE BANK A/S
13F
CIK 800177 · Bank · Jun 30, 2026
|
2 | ||
| 33 |
JPMORGAN CHASE & CO
13F
CIK 19617 · Bank · Jun 30, 2026
|
2 | ||
| 34 |
OSAIC HOLDINGS, INC.
13F
CIK 1677044 · Holding company · Jun 30, 2026
|
2 | ||
| 35 |
GROUP ONE TRADING LLC
13F
CIK 932540 · Broker-dealer · Jun 30, 2026
|
1 |
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.