GTBP
GT Biopharma (GTBP)
NASDAQ
$4.10+$0.15 (+3.77%)
Price as of Nov 12, 2026 7:57 AM EST
  • $8.1M
    Market Cap
  • -78.21%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
VANGUARD CAPITAL MANAGEMENT LLC
29.82%
376,399
-75,476 (-20.05%)
Jun 30, 2026
VANGUARD FIDUCIARY TRUST CO
17.90%
225,938
0 (0.00%)
Jun 30, 2026
TWO SIGMA INVESTMENTS LLC
14.27%
180,100
+17,277 (+9.59%)
Dec 31, 2021
TWO SIGMA ADVISERS, LLC
9.50%
119,900
+68,800 (+57.38%)
Dec 31, 2021
HRT FINANCIAL LP
8.49%
107,140
+107,140 (+100.00%)
Jun 30, 2026
SRS CAPITAL ADVISORS, INC.
7.42%
93,627
0 (0.00%)
Jun 30, 2026
NORTHERN TRUST CORP
5.98%
75,461
+75,461 (+100.00%)
Jun 30, 2026

Current Ownership Distribution

  • Insiders70.5M (51.50%)
  • Institutions41.9M (30.58%)
  • Mutual Funds24.5M (17.92%)
  • Other0 (0.00%)

Insider Transactions

  • 51.50% (70.5M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 0
    Number of InsiderSelling (last 12 months)
  • $0.00
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Mun-Gavin David C.
Award
Sep 04, 2025
$0.00
31,250
$0.00
31,250
Breen Michael Martin
CEO and Director
Award
Sep 04, 2025
$0.00
100,000
$0.00
100,000
Kramer Hilary
Award
Sep 04, 2025
$0.00
31,250
$0.00
31,250
URBAN ALAN LOUIS
Chief Financial Officer
Award
Sep 04, 2025
$0.00
50,000
$0.00
50,000
CASAMENTO CHARLES J
Award
Sep 04, 2025
$0.00
62,500
$0.00
62,500
Breen Michael Martin
CEO and Director
Award
Sep 04, 2025
$0.00
100,000
$0.00
100,000
URBAN ALAN LOUIS
Chief Financial Officer
Award
Sep 04, 2025
$0.00
50,000
$0.00
50,000
Breen Michael Martin
CEO and Director
Award
Sep 04, 2025
$0.00
100,000
$0.00
100,000