---
schema_version: "secwatch.filing_event.v1"
accession: "0000947484-24-000055"
form_type: "8-K"
ticker: "ACGL"
cik: "0000947484"
company_name: "ARCH CAPITAL GROUP LTD."
filed_at: "2024-04-05T23:59:59+00:00"
generated_at: "2026-06-04T02:06:28.517556+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Arch to acquire Allianz's U.S. MidCorp & Entertainment insurance businesses for $450M cash

## Summary
- Purchase price of $450M cash; Arch estimates ~$1.4B capital requirement to support the business.
- Acquired businesses wrote $1.7B gross premium in 2023, adding 500 employees.
- Transaction builds Arch's U.S. middle-market presence; expected close H2 2024 subject to regulatory approvals.
- Arch Insurance North America wrote ~$5.8B gross premium in 2023; double-digit growth 5 consecutive years.

## SEC filing metadata
- accession: 0000947484-24-000055
- form_type: 8-K
- ticker: ACGL
- cik: 0000947484
- company_name: ARCH CAPITAL GROUP LTD.
- filed_at: 2024-04-05T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 1.01, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/947484/000094748424000055/0000947484-24-000055-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/947484/000094748424000055/acgl-20240405.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000947484-24-000055
- JSON: https://secwatch.observer/filing/0000947484-24-000055.json
- Plain text: https://secwatch.observer/filing/0000947484-24-000055.txt

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