---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-088435"
form_type: "8-K"
ticker: "OSTX"
cik: "0001795091"
company_name: "OS Therapies Inc"
filed_at: "2026-08-12T20:56:09+00:00"
generated_at: "2026-08-12T20:57:09.174601+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# OS Therapies raises $5M initial tranche via convertible notes and warrants

## Summary
- Closed initial $5M tranche of private placement; issued $5.405M principal in 9% senior secured convertible notes.
- Notes convertible at $2.05/share; 600k shares, 900k pre-funded warrants, 1.5M warrants issued at closing.
- $2.2M bridge note converted into $2.378M note plus warrants; notes mature in 9 months, prepayable at 110%.
- Second $5M tranche optional; placement agent Ceros gets 5% cash fee and 75k warrants at $3.14.
- Proceeds for clinical development and working capital; company barred from dividends without holder consent.

## SEC filing metadata
- accession: 0001213900-26-088435
- form_type: 8-K
- ticker: OSTX
- cik: 0001795091
- company_name: OS Therapies Inc
- filed_at: 2026-08-12T20:56:09+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1795091/000121390026088435/0001213900-26-088435-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1795091/000121390026088435/ea0301485-8k_ostherapies.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-088435
- JSON: https://secwatch.observer/filing/0001213900-26-088435.json
- Plain text: https://secwatch.observer/filing/0001213900-26-088435.txt

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