---
schema_version: "secwatch.filing_event.v1"
accession: "0001664710-25-000059"
form_type: "8-K"
ticker: "KROS"
cik: "0001664710"
company_name: "Keros Therapeutics, Inc."
filed_at: "2025-07-15T23:59:59+00:00"
generated_at: "2026-05-18T06:29:42.154130+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Keros Therapeutics CMO Yung Chyung resigns effective Aug 1, 2025

## Summary
- Chief Medical Officer Yung H. Chyung, M.D. resigned effective August 1, 2025.
- Resignation is voluntary and not due to any disagreement with the company.
- Company has initiated a search for a new Chief Medical Officer.
- Dr. Chyung served as CMO and member of the executive team.

## SEC filing metadata
- accession: 0001664710-25-000059
- form_type: 8-K
- ticker: KROS
- cik: 0001664710
- company_name: Keros Therapeutics, Inc.
- filed_at: 2025-07-15T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1664710/000166471025000059/0001664710-25-000059-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1664710/000166471025000059/kros-20250709.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001664710-25-000059
- JSON: https://secwatch.observer/filing/0001664710-25-000059.json
- Plain text: https://secwatch.observer/filing/0001664710-25-000059.txt

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