Mitsui Sumitomo Insurance Co Ltd

Mitsui Sumitomo Insurance Co Ltd is listed in filings as 10% Owner at Berkley (W.R.) Corp. This profile follows SEC Form 4 activity through Mar 3, 2026, including purchase activity. Recent filings connect the profile to Berkley (W.R.) Corp (WRB). The current snapshot covers public activity from Jan 2, 2026 to Mar 3, 2026. Reported amounts are shown as $16.2M to $785.4K. The page organizes purchases, sales, issuer links, reported share activity, and filing evidence for review as public disclosure data.