---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-21-273619"
form_type: "8-K"
ticker: "WRB"
cik: "0000011544"
company_name: "BERKLEY W R CORP"
filed_at: "2021-09-15T23:59:59+00:00"
generated_at: "2026-06-29T03:25:59.541043+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# WRB closes $350M offering of 3.150% Senior Notes due 2061

## Summary
- Issued $350 million aggregate principal of 3.150% Senior Notes due 2061 on Sept 15, 2021.
- Notes are senior unsecured obligations, issued under a supplemental indenture with BNY Mellon as trustee.
- Proceeds not specified; typical use is general corporate purposes.

## SEC filing metadata
- accession: 0001193125-21-273619
- form_type: 8-K
- ticker: WRB
- cik: 0000011544
- company_name: BERKLEY W R CORP
- filed_at: 2021-09-15T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 1.01, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/11544/000119312521273619/0001193125-21-273619-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/11544/000119312521273619/d225177d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-21-273619
- JSON: https://secwatch.observer/filing/0001193125-21-273619.json
- Plain text: https://secwatch.observer/filing/0001193125-21-273619.txt

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