GTBP
GT Biopharma (GTBP)
NASDAQ
$8.68+$0.07 (+0.78%)
Price as of Sep 11, 2026 7:57 PM EDT
  • $15.5M
    Market Cap
  • -57.22%
    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
GEODE CAPITAL MANAGEMENT, LLC
21.14%
266,788
-27,671 (-10.37%)
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
EVERHART FINANCIAL GROUP, INC.
7.92%
100,000
+100,000 (+100.00%)
Jun 30, 2026

Current Ownership Distribution

  • Insiders70.5M (51.74%)
  • Institutions41.9M (30.71%)
  • Mutual Funds23.9M (17.54%)
  • Other0 (0.00%)

Insider Transactions

  • 51.74% (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
URBAN ALAN LOUIS
Chief Financial Officer
Award
Oct 17, 2024
$0.00
23,335
$0.00
23,335