GT Biopharma, Inc.
GTBP- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0000109657
No open-market purchases or sales by GT Biopharma, Inc. insiders were filed in the last 90 days; 59 institutions reported holding it in 13F filings for Q2 2026, worth $1.02M in total; no superinvestor holds it.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +17 vs. previous quarter
- 59
- 13F valueReported value at the end of Q2 2026
- $1.02M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding GTBP, Q2 2026
No superinvestor reported holding GTBP at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by GT Biopharma, Inc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Apr 11, 2023 (view filing) | Apr 11 | Same day | Breen Michael MartinExecutive Chairman/Interim CEO | PPurchase | +50.0K | $0.50 | +$25.0K | +8.2%656.2K after | |
| Apr 10, 2023 (view filing) | Apr 6 | 4 days | Ohri ManuCFO & Secretary | PPurchase | +50.0K | $0.50 | +$25.0K | New position50.0K after | |
| Oct 7, 2021 (view filing) | Nov 16-Dec 22, 2020 | 325 daysLate | Wendel BruceDirector | PPurchase | +5.08K | $5.17 | +$26.3K | New position5.08K after | 3 lots |
Top 10 13F holders, Q2 2026
The largest institutional positions in GT Biopharma, Inc. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Capital Management LLC | 376,399 | $184.4K | 0.00% | −75,476−16.7% | Reduced |
| Geode Capital Management, LLC | 266,788 | $130.6K | 0.00% | −27,671−9.4% | Reduced |
| Vanguard Fiduciary Trust Co | 225,938 | $110.7K | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 107,140 | $52.0K | 0.00% | +107,140 | New |
| Everhart Financial Group, Inc. | 100,000 | $49.0K | 0.00% | +100,000 | New |
| SRS Capital Advisors, Inc. | 93,627 | $45.9K | 0.00% | 00.0% | Unchanged |
| Opal Wealth Advisors, LLC | 81,811 | $40.1K | 0.01% | +81,811 | New |
| Northern Trust Corp | 75,461 | $37.0K | 0.00% | +75,461 | New |
| 49 Wealth Management, LLC | 64,000 | $31.3K | 0.01% | +64,000 | New |
| Alongside, LLC | 64,000 | $31.3K | 0.01% | +64,000 | New |