---
schema_version: "secwatch.filing_event.v1"
accession: "0001664710-24-000026"
form_type: "8-K"
ticker: "KROS"
cik: "0001664710"
company_name: "Keros Therapeutics, Inc."
filed_at: "2024-03-05T23:59:59+00:00"
generated_at: "2026-06-05T03:50:03.583958+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Keros CMO Simon Cooper resigns effective March 12, 2024

## Summary
- Simon Cooper, M.B.B.S., voluntarily resigned as CMO effective March 12, 2024, to pursue other opportunities.
- Resignation is not due to any disagreement with the company.
- Company has commenced a search for a new Chief Medical Officer.

## SEC filing metadata
- accession: 0001664710-24-000026
- form_type: 8-K
- ticker: KROS
- cik: 0001664710
- company_name: Keros Therapeutics, Inc.
- filed_at: 2024-03-05T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1664710/000166471024000026/0001664710-24-000026-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1664710/000166471024000026/kros-20240229.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001664710-24-000026
- JSON: https://secwatch.observer/filing/0001664710-24-000026.json
- Plain text: https://secwatch.observer/filing/0001664710-24-000026.txt

## Key facts
- Executive change
  Simon Cooper resigned as Chief Medical Officer at Keros Therapeutics, Inc..
  - Action: resigned
  - Role: Chief Medical Officer
  source text: On February 29, 2024, Simon Cooper, M.B.B.S., resigned from his position as Chief Medical Officer of Keros Therapeutics, Inc. (the “Company”), effective March 12, 2024, to pursue other opportunities.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1664710/000166471024000026/0001664710-24-000026-index.htm

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