---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-24-091235"
form_type: "8-K"
ticker: "OSTX"
cik: "0001795091"
company_name: "OS Therapies Inc"
filed_at: "2024-10-28T23:59:59+00:00"
generated_at: "2026-05-30T09:46:49.360316+00:00"
event_type: "leadership"
sentiment: "positive"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# OS Therapies appoints two new independent directors; Chairman Goddard and Joacim Borg resign

## Summary
- Colin Goddard (Chairman) and Joacim Borg resigned effective Oct 28, 2024; no disagreement with company operations.
- Avril McKean Dieser appointed independent director; VP, Head Legal Patient Evidence at UCB; regulatory/commercialization expertise.
- Olivier R. Jarry appointed independent director; co-founder/CEO of Libera Bio; 40+ years biopharma experience.
- Company preparing for FDA discussion on pivotal trial of OST-HER2 for osteosarcoma; building infrastructure for potential commercial launch.

## SEC filing metadata
- accession: 0001213900-24-091235
- form_type: 8-K
- ticker: OSTX
- cik: 0001795091
- company_name: OS Therapies Inc
- filed_at: 2024-10-28T23:59:59+00:00
- event_type: leadership
- sentiment: positive
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1795091/000121390024091235/0001213900-24-091235-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1795091/000121390024091235/ea0218797-8k_osthera.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-24-091235
- JSON: https://secwatch.observer/filing/0001213900-24-091235.json
- Plain text: https://secwatch.observer/filing/0001213900-24-091235.txt

## Key facts
- Executive change
  Colin Goddard resigned as Chairman of the Board and director at OS Therapies Inc.
  - Action: resigned
  - Role: Chairman of the Board and director
  source text: Effective October 28, 2024, Colin Goddard, Ph.D. notified the Board of Directors (the “Board”) of the Company of his resignation as the Chairman of the Board and director of the Company, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1795091/000121390024091235/0001213900-24-091235-index.htm
- Executive change
  Joacim Borg resigned as director at OS Therapies Inc.
  - Action: resigned
  - Role: director
  source text: Also, effective October 28, 2024, Joacim Borg notified the Board of his resignation as a director, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1795091/000121390024091235/0001213900-24-091235-index.htm
- Executive change
  Avril McKean Dieser was appointed as director at OS Therapies Inc.
  - Action: appointed
  - Role: director
  source text: Avril McKean Dieser and Olivier R. Jarry joined the Board, effective October 28, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1795091/000121390024091235/0001213900-24-091235-index.htm
- Executive change
  Olivier R. Jarry was appointed as director at OS Therapies Inc.
  - Action: appointed
  - Role: director
  source text: Avril McKean Dieser and Olivier R. Jarry joined the Board, effective October 28, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1795091/000121390024091235/0001213900-24-091235-index.htm

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