---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-25-013890"
form_type: "8-K"
ticker: "SHPH"
cik: "0001757499"
company_name: "Shuttle Pharmaceuticals Holdings, Inc."
filed_at: "2025-09-17T23:59:59+00:00"
generated_at: "2026-05-17T06:22:55.215692+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Director Joseph Tung resigns from Shuttle Pharmaceuticals board

## Summary
- Joseph Tung resigned as director on September 11, 2025.
- Resignation was not due to any disagreement with the company.
- No replacement has been announced.
- Board size reduced; impact on governance unclear.

## SEC filing metadata
- accession: 0001493152-25-013890
- form_type: 8-K
- ticker: SHPH
- cik: 0001757499
- company_name: Shuttle Pharmaceuticals Holdings, Inc.
- filed_at: 2025-09-17T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1757499/000149315225013890/0001493152-25-013890-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1757499/000149315225013890/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-25-013890
- JSON: https://secwatch.observer/filing/0001493152-25-013890.json
- Plain text: https://secwatch.observer/filing/0001493152-25-013890.txt

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