---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-25-063479"
form_type: "8-K"
ticker: "OSTX"
cik: "0001795091"
company_name: "OS Therapies Inc"
filed_at: "2025-07-14T23:59:59+00:00"
generated_at: "2026-05-18T06:43:21.020275+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# OS Therapies closes $4.2M warrant exercise inducement; extends cash runway to 2026

## Summary
- Raised $4.2M gross from exercise of 3.8M existing warrants at $1.12/share; issued new warrants at $3.00/share.
- Cash runway extended through 2026, beyond Sept 30, 2026 PRV sunset date for rare pediatric diseases.
- Proceeds to support OST-HER2 regulatory efforts for osteosarcoma, advance OS Animal Health, close OST-504 prostate cancer study, and initiate AI-driven ADC modeling.
- CEO Paul Romness highlighted End of Phase 2 meeting with FDA and Scientific Advice Meetings in UK/Europe.
- New warrants exercisable for 5 years at $3.00/share; forced exercise if stock hits 300% of exercise price for 20 consecutive trading days.

## SEC filing metadata
- accession: 0001213900-25-063479
- form_type: 8-K
- ticker: OSTX
- cik: 0001795091
- company_name: OS Therapies Inc
- filed_at: 2025-07-14T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 1.01, 3.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1795091/000121390025063479/0001213900-25-063479-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1795091/000121390025063479/ea0248754-8k_ostherap.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-25-063479
- JSON: https://secwatch.observer/filing/0001213900-25-063479.json
- Plain text: https://secwatch.observer/filing/0001213900-25-063479.txt

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