GTBP · GT Biopharma, Inc. · Shareholders & Ownership
$7.33
+0.64 (+9.57%)
At close · Oct 20
Return incl. dividend (before tax)
Going-concern doubt
— flagged Aug 14, 2026
Substantial doubt about the company's ability to continue as a going concern.
“These factors raise substantial doubt about the Company's ability to continue as a going concern within one year of the date that the financial statements are issued. In addition, the Company's independent registered public accounting firm, in its report on the Company's December 31, 2025 financial statements, raised substantial doubt about the Company's ability to continue as a going concern.”View the 10-Q filed Aug 14, 2026
Market Cap
$12.07M
Shares
1.80M
Volume · Oct 20
15.52K
Avg daily vol (29 sessions)
97.78K
Every disclosed holder of GTBP 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 GTBP
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 75,369 | 4.18% |
| Insiders (Forms 3, 4, 5) | 0 | 0.00% |
| 13D/G-only blocks | 21,895 | 1.21% |
| Remaining | 1,707,116 | 94.61% |
| Registered funds (N-PORT, not summed) | 23,274 | 1.29% |
Shares outstanding: 1,804,380, the issuer's latest cover-page count restated onto today's split basis.
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 GTBP
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
15,056 | ||
| 2 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
15,056 | ||
| 3 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
10,672 | ||
| 4 |
|
10,136 | ||
| 5 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
9,038 | ||
| 6 |
|
8,778 | ||
| 7 |
Fidelity Extended Market Index Fund
Fund
S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
7,159 | ||
| 8 |
HRT FINANCIAL LP
13F
CIK 1475597 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,286 | ||
| 9 |
Arax Advisory Partners
13F
CIK 1586767 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,745 | ||
| 10 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,018 | ||
| 11 |
Bristol Investment Fund, Ltd.
13G
CIK 1174866 · Unknown · May 29, 2025
Rule 13d-1(c), passive investor
|
2,981 | ||
| 12 |
49 WEALTH MANAGEMENT, LLC
13F
CIK 2022291 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,560 | ||
| 13 |
ALONGSIDE, LLC
13F
CIK 2113496 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,560 | ||
| 14 |
Cetera Investment Advisers
13F
CIK 1666741 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,237 | ||
| 15 |
SeaCrest Wealth Management, LLC
13F
CIK 1728121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,004 | ||
| 16 |
KITCHING PARTNERS, LLC
13F
CIK 2010145 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,000 | ||
| 17 |
PNC FINANCIAL SERVICES GROUP, INC.
13F
CIK 713676 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,600 | ||
| 18 |
OSAIC HOLDINGS, INC.
13F
CIK 1677044 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,540 | ||
| 19 |
LPL Financial LLC
13F
CIK 1403438 · Broker-dealer · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,455 | ||
| 20 |
Fidelity Series Total Market Index Fund
Fund
S000065248 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
971 | ||
| 21 |
StoneX Group Inc.
13F
CIK 913760 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
930 | ||
| 22 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
903 | ||
| 23 |
Keel Point, LLC
13F
CIK 1386935 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
831 | ||
| 24 |
Corient Private Wealth LLC
13F
CIK 1948780 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
800 | ||
| 25 |
Integrated Wealth Concepts LLC
13F
CIK 1737109 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
800 | ||
| 26 |
SAGESPRING WEALTH PARTNERS, LLC
13F
CIK 2056425 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
800 | ||
| 27 |
Coston, McIsaac & Partners
13F
CIK 1945037 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
684 | ||
| 28 |
Caitlin John, LLC
13F
CIK 2010947 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
660 | ||
| 29 |
WELLS FARGO & COMPANY/MN
13F
CIK 72971 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
639 | ||
| 30 |
AM INVESTMENT STRATEGIES LLC
13F
CIK 1818897 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
600 | ||
| 31 |
TWO SIGMA SECURITIES, LLC
13F
CIK 1450144 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
535 | ||
| 32 |
Prospera Financial Services Inc
13F
CIK 1541625 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
500 | ||
| 33 |
Verdence Capital Advisors LLC
13F
CIK 1719305 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
480 | ||
| 34 |
LaSalle St. Investment Advisors, LLC
13F
CIK 1966193 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
440 | ||
| 35 |
Mayflower Financial Advisors, LLC
13F
CIK 1852930 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
440 | ||
| 36 |
PARSONS CAPITAL MANAGEMENT INC/RI
13F
CIK 1018674 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
436 | ||
| 37 |
HBK Sorce Advisory LLC
13F
CIK 1379995 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
400 | ||
| 38 |
Koss-Olinger Consulting, LLC
13F
CIK 1861163 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
400 | ||
| 39 |
NORTH STAR ASSET MANAGEMENT INC
13F
CIK 1056559 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
400 | ||
| 40 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
332 | ||
| 41 |
ROYAL BANK OF CANADA
13F
CIK 1000275 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
304 | ||
| 42 |
Atlantic Union Bankshares Corp
13F
CIK 883948 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
214 | ||
| 43 |
Allworth Financial LP
13F
CIK 1555170 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
180 | ||
| 44 |
NFSG Corp
13F
CIK 1879757 · Registered investment adviser · Sep 30, 2026
|
150 | ||
| 45 |
Farther Finance Advisors, LLC
13F
CIK 1992825 · Registered investment adviser · Sep 30, 2026
|
120 | ||
| 46 |
MassMutual Private Wealth & Trust, FSB
13F
CIK 1103653 · Unknown · Sep 30, 2026
|
120 | ||
| 47 |
West Financial Advisors, LLC
13F
CIK 1843684 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
100 | ||
| 48 |
Fidelity Total Market Index Fund
Fund
S000006026 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
88 | ||
| 49 |
Stone House Investment Management, LLC
13F
CIK 1696497 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
82 | ||
| 50 |
Tower Research Capital LLC (TRC)
13F
CIK 1533421 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
68 |
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.
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