Schedule 13D ownership disclosure

BERKLEY W R CORP COM

Common Stock, par value $0.20 per share · CUSIP: 084423102

Event date: 2025-12-04

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares
Unavailable
Percent of class
Unavailable
  • Mitsui Sumitomo Insurance Co., Ltd.Reported CIK 0001142206

    Shares: 48,601,588 · Class: 12.8%

  • MS&AD Insurance Group Holdings, Inc.Reported CIK 0001431048

    Shares: 48,601,588 · Class: 12.8%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.

Source: SEC EDGAR filing

Filing metadata

Accession number
0001193125-25-316177
Form type
SCHEDULE 13D
Filer
BERKLEY W R CORP
CIK
CIK 11544
Filed
Dec 11, 2025
Reporting period
Dec 04, 2025
Description
Schedule 13D beneficial ownership

Explore SEC Filings Hub