Summary:W. R. Berkley

🏛️ W. R. Berkley Corporation is a Delaware-incorporated insurance holding company founded in 1967, operating through 60 specialized (re)insurance businesses that write predominantly US commercial-lines P&C and specialty coverages, with GWP of $15.1 billion in FY2025. The company delivered combined ratios between 89.3% and 90.7% across FY2021–FY2025 and ROE consistently above 16%, reaching 21.2% in FY2025 — outperforming peers Markel, Everest and Hanover on both underwriting and returns. The June 2026 death of founder William R. Berkley and immediate elevation of his son Rob Berkley to Chairman presents low near-term execution risk given Rob Berkley's decade-long tenure as CEO, but it removes the company's irreplaceable founder-anchored cultural authority and elevates long-term governance questions alongside Mitsui Sumitomo's ~15.7% strategic stake and new board seat. The central forward risk is casualty reserve adequacy amid social inflation, as the workers'-comp release cushion that has historically offset modest casualty strengthening is narrowing.