---
schema_version: "secwatch.filing_event.v1"
accession: "0000947484-25-000071"
form_type: "8-K"
ticker: "ACGL"
cik: "0000947484"
company_name: "ARCH CAPITAL GROUP LTD."
filed_at: "2025-09-05T23:59:59+00:00"
generated_at: "2026-05-17T08:11:23.337984+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Arch Capital boosts share repurchase authority by $2.0B, total available ~$2.3B

## Summary
- Authorization increased by $2.0B on Sept. 4, 2025, bringing total available to ~$2.3B.
- Includes recent Q3 2025 repurchases; timing and amount depend on market conditions.
- Repurchases may be executed in open market or privately negotiated transactions.
- Program depends on corporate and regulatory factors.

## SEC filing metadata
- accession: 0000947484-25-000071
- form_type: 8-K
- ticker: ACGL
- cik: 0000947484
- company_name: ARCH CAPITAL GROUP LTD.
- filed_at: 2025-09-05T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/947484/000094748425000071/0000947484-25-000071-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/947484/000094748425000071/acgl-20250904.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000947484-25-000071
- JSON: https://secwatch.observer/filing/0000947484-25-000071.json
- Plain text: https://secwatch.observer/filing/0000947484-25-000071.txt

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