secwatch.observer — SEC 8-K summary
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Issuer:     GT Biopharma, Inc. (GTBP)
CIK:        0000109657
Form:       8-K
Filed at:   2026-09-21T20:10:24+00:00
Accession:  0001493152-26-043562
Event type: other_material
Sentiment:  neutral
Materiality: 0.60
Item codes: 1.01, 3.02, 3.03, 5.03, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

GT Biopharma ups private placement to $7.75M, adds new investor
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- Amended securities purchase agreement raises aggregate purchase price from $7.45M to $7.75M for 8,611.111 Series M preferred shares (stated value $8.61M).
- New purchaser Nicholas R. Nikolov joins via joinder to registration rights agreement; Five Narrow Lane and Bristol Investment Fund remain majority purchasers.
- Greenshoe rights allow purchasers to buy up to $34,675,615 stated value for $31,208,054 aggregate purchase price.
- Certificate of Increase raises designated Series M preferred shares from 41,778 to 43,287.
- Offering private under Rule 506(b); registration statement to be filed within 30 days of closing.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/109657/000149315226043562/0001493152-26-043562-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/109657/000149315226043562/form8-k.htm
  HTML page:      https://secwatch.observer/filing/0001493152-26-043562

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