---
schema_version: "secwatch.filing_event.v1"
accession: "0000947484-26-000044"
form_type: "8-K"
ticker: "ACGL"
cik: "0000947484"
company_name: "ARCH CAPITAL GROUP LTD."
filed_at: "2026-04-20T23:59:59+00:00"
generated_at: "2026-05-15T05:26:35.767978+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Arch Capital boosts share repurchase authorization by $3.0B; $3.1B now available

## Summary
- Board authorized $3.0B increase in share repurchase program; $3.1B now available for buybacks.
- Repurchases may be effected in open market or private transactions depending on market conditions.
- Program timing and amount depend on market conditions, corporate and regulatory considerations.

## SEC filing metadata
- accession: 0000947484-26-000044
- form_type: 8-K
- ticker: ACGL
- cik: 0000947484
- company_name: ARCH CAPITAL GROUP LTD.
- filed_at: 2026-04-20T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/947484/000094748426000044/0000947484-26-000044-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/947484/000094748426000044/acgl-20260419.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000947484-26-000044
- JSON: https://secwatch.observer/filing/0000947484-26-000044.json
- Plain text: https://secwatch.observer/filing/0000947484-26-000044.txt

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