Ticker · CUSIP 36254L308

GTBP

GT BIOPHARMA INC
···Share
Holders (tracked)
1
Combined shares
80,761
Combined value
$63.4K
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
Flat over the last 6 quarters.
112024Q12025Q4

SEC event timeline

2 events
  1. Ken Griffin (Citadel Advisors) added2026-02-17
    +41,128 shares · 2025Q4
    Position
  2. Renaissance Technologies exited2025-11-13
    −26,300 shares · 2025Q3
    Position

Insider activity

No insider transactions in the last 30 days.
View full insider history for GTBP →

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.
New positions0
—
Added to1
Trimmed0
—
Exited0
—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2024Q1
1
$45K
2024Q2
1
$28K
2025Q1
1
$45K
2025Q2
1
$94K
2025Q3
1
$24K
2025Q4
1
$63K

Who owns GTBP

1 super-investors · 2025Q4
Tracked stake
80.8K
shares
Combined value
$63K
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added1
#ManagerSharesValue
1Ken Griffin
Citadel Advisors
80.8K$63K

Recent moves

5 transactions
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