---
schema_version: "secwatch.filing_event.v1"
accession: "0000947484-24-000154"
form_type: "8-K"
ticker: "ACGL"
cik: "0000947484"
company_name: "ARCH CAPITAL GROUP LTD."
filed_at: "2024-12-20T23:59:59+00:00"
generated_at: "2026-05-29T00:48:33.277538+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Arch Capital renews $1.0B share repurchase authorization, replacing prior program

## Summary
- New $1.0B buyback authorization replaces existing program; open market or private transactions allowed.
- As of Sept 30, 2024, ~$1.0B remained under prior authorization; no shares repurchased Oct 1–Dec 13.
- Program allows repurchases at management’s discretion with no expiration date specified.

## SEC filing metadata
- accession: 0000947484-24-000154
- form_type: 8-K
- ticker: ACGL
- cik: 0000947484
- company_name: ARCH CAPITAL GROUP LTD.
- filed_at: 2024-12-20T23:59:59+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/947484/000094748424000154/0000947484-24-000154-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/947484/000094748424000154/acgl-20241220.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000947484-24-000154
- JSON: https://secwatch.observer/filing/0000947484-24-000154.json
- Plain text: https://secwatch.observer/filing/0000947484-24-000154.txt

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