Security Snapshot

GT Biopharma, Inc. - COMMON STOCK, $0.001 PAR VALUE PER SHARE (GTBP) Institutional Ownership

CUSIP: 36254L407

13F Institutional Holders and Ownership History for Q3 2026

13F reference period

n/a

Institutions Reporting

Shares (Excl. Options)

Price

$6.47

The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.

Save this security page for your next review

Watchlists follow companies and investors, across their share classes. Bookmark this page to revisit this specific CUSIP and its quarterly holders. If you create an account from here, we will bring you back after verification.

Create free account and return here Sign in and return here Review latest holder period
Security type / class
Equity / COMMON STOCK, $0.001 PAR VALUE PER SHARE
Symbol
GTBP on Nasdaq
Shares outstanding
1,804,384
SEC-reported price per share
$6.47
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source

Key facts

  • GTBP - GT Biopharma, Inc. - COMMON STOCK, $0.001 PAR VALUE PER SHARE is tracked under CUSIP 36254L407.
  • 13F reference-period holder data is not available.
  • 1 significant owner is listed from Schedule 13D/13G reporting.

Change

  • Holder data for the Q2 2026 reference period is not available.
  • Available periods remain in the history table; they do not substitute for the headline period.

Research use

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Schedule 13D/G

Ownership context comes from Schedule 13D/G and available holder history for this CUSIP.

Open SEC evidence

Security key

36254L407

13F reference period

n/a

13F holders

13D/G owners

1

CIK / CUSIP context first

GTBP full holder history GT Biopharma, Inc. SEC filings GT Biopharma, Inc. company facts GT Biopharma, Inc. insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
1
Security
GTBP
Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
RainForest Partners, LLC 10% 180,258 RainForest Partners, LLC 15 Sep 2026

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
1
Headline period
n/a
Rows shown
1-1 of 1
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q3 581 $3,759 +$3,759 $6.47 6
We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. Manage preferences to update or revoke optional consent for future visits. For more information, see our Privacy Policy .