---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-075781"
form_type: "8-K/A"
ticker: "OSTX"
cik: "0001795091"
company_name: "OS Therapies Inc"
filed_at: "2026-07-07T13:18:33+00:00"
generated_at: "2026-07-07T13:19:11.965557+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# OS Therapies amends private placement terms with Leonite; dilutive adjustment delayed to Sept 30, 2026

## Summary
- Side letter modifies anti-dilution provisions in $10M convertible note and warrant.
- Dilutive issuance adjustments under Note and Warrant will not become effective until September 30, 2026.
- Carve-out for offerings of at least $5M gross proceeds now requires single closing, not aggregated tranches.
- Agreement dated June 30, 2026 between OS Therapies and Leonite Fund I, LP.
- No other changes to transaction documents.

## SEC filing metadata
- accession: 0001213900-26-075781
- form_type: 8-K/A
- ticker: OSTX
- cik: 0001795091
- company_name: OS Therapies Inc
- filed_at: 2026-07-07T13:18:33+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1795091/000121390026075781/0001213900-26-075781-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1795091/000121390026075781/ea0297249-8ka1_ostherapies.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-075781
- JSON: https://secwatch.observer/filing/0001213900-26-075781.json
- Plain text: https://secwatch.observer/filing/0001213900-26-075781.txt

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