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ISSUER PROFILE · CIK 0000109657

GT Biopharma, Inc.GTBP

1 13D/G filings 1 distinct filers 0 insider transactions (365d)

Cross-Reference Snapshot

Activist filings
1
1 SCHEDULE 13G
Distinct filers
1
single filer
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
4.41
as of 2026-09-30

13D/G Filings Timeline · 1 total

FiledFormFilerStakeSharesIntent
2026-09-15 SCHEDULE 13G RainForest Partners, LLC — — view →

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-09-30 259,425 4.41 +1.1%
2026-09-15 256,614 1.37 -93.3%
2026-08-31 3,842,169 9.99 -5.4%
2026-08-14 4,063,295 9.26 +3.7%
2026-07-31 3,918,534 7.75 -18.1%
2026-07-15 4,784,652 4.17 +39.7%
2026-06-30 3,424,425 2.42 +35.6%
2026-06-15 2,525,134 1.64 +26.5%
2026-05-29 1,996,213 1.00 -3.8%
2026-05-15 2,075,177 1.00 +243.3%
2026-04-30 604,557 1.00 -9.9%
2026-04-15 671,073 1.27 -10.2%

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