---
schema_version: "secwatch.filing_event.v1"
accession: "0000947484-25-000004"
form_type: "8-K"
ticker: "ACGL"
cik: "0000947484"
company_name: "ARCH CAPITAL GROUP LTD."
filed_at: "2025-02-06T23:59:59+00:00"
generated_at: "2026-05-27T02:14:49.886013+00:00"
event_type: "leadership"
sentiment: "positive"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Arch Capital appoints Alexander Moczarski, former Marsh McLennan Chairman, to board effective Feb 4, 2025

## Summary
- Alexander Moczarski appointed as Class III director effective February 4, 2025.
- Mr. Moczarski served as Chairman of Marsh McLennan International with 45+ years of insurance experience.
- He held leadership roles at Guy Carpenter, Marsh McLennan, and AIG.
- Will receive standard non-employee director compensation (cash and equity).
- Board Chair John Pasquesi and CEO Nicolas Papadopoulo cited his global perspective and experience.

## SEC filing metadata
- accession: 0000947484-25-000004
- form_type: 8-K
- ticker: ACGL
- cik: 0000947484
- company_name: ARCH CAPITAL GROUP LTD.
- filed_at: 2025-02-06T23:59:59+00:00
- event_type: leadership
- sentiment: positive
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/947484/000094748425000004/0000947484-25-000004-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/947484/000094748425000004/acgl-20250204.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000947484-25-000004
- JSON: https://secwatch.observer/filing/0000947484-25-000004.json
- Plain text: https://secwatch.observer/filing/0000947484-25-000004.txt

## Key facts
- Executive change
  Alexander Moczarski was appointed as Director at ARCH CAPITAL GROUP LTD..
  - Action: appointed
  - Role: Director
  source text: On February 4, 2025, Arch Capital Group Ltd.’s (“ACGL”) Board of Directors (“Board”) unanimously approved the appointment of Alexander Moczarski to serve as a Class III director of the Board, effective February 4, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/947484/000094748425000004/0000947484-25-000004-index.htm

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