---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-23-015385"
form_type: "8-K"
ticker: "GTBP"
cik: "0000109657"
company_name: "GT Biopharma, Inc."
filed_at: "2023-05-04T23:59:59+00:00"
generated_at: "2026-06-15T19:50:15.608224+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# GT Biopharma appoints Charles Casamento to board; Alan Urban resigns

## Summary
- Charles J. Casamento appointed to board effective May 1, 2023, to fill vacant seat.
- Casamento to serve on Audit, Compensation, and Nominating & Governance committees.
- Alan Urban resigned from board on May 1, 2023, to pursue new career opportunities.
- Casamento has >35 years biopharma experience, formerly CEO of Questcor Pharmaceuticals and Osteologix.
- Casamento currently serves on boards of four NASDAQ-listed biotechs: Eton, First Wave, PaxMedica, Relmada.

## SEC filing metadata
- accession: 0001493152-23-015385
- form_type: 8-K
- ticker: GTBP
- cik: 0000109657
- company_name: GT Biopharma, Inc.
- filed_at: 2023-05-04T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/109657/000149315223015385/0001493152-23-015385-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/109657/000149315223015385/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-23-015385
- JSON: https://secwatch.observer/filing/0001493152-23-015385.json
- Plain text: https://secwatch.observer/filing/0001493152-23-015385.txt

## Key facts
- Executive change
  Charles J. Casamento was appointed as Director at GT Biopharma, Inc..
  - Action: appointed
  - Role: Director
  source text: the Registrant’s Board appointed Charles J. Casamento to fill a vacant seat on the Board
  evidence_url: https://www.sec.gov/Archives/edgar/data/109657/000149315223015385/0001493152-23-015385-index.htm
- Executive change
  Alan Urban resigned as Director at GT Biopharma, Inc..
  - Action: resigned
  - Role: Director
  source text: On May 1, 2023 Alan Urban resigned as a member of the Registrant’s Board of Directors (the “Board”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/109657/000149315223015385/0001493152-23-015385-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.