W. R. Berkley Corporation, a commercial lines property and casualty insurer and reinsurer, has reported pre-tax underwriting income growth of 14.9% to a record $338 million for the fourth quarter of 2025 (Q4’25), and a record$1.2 billion for the full year 2025 (FY’25).The strong underwriting result came on the back of a rise in gross written premiums (GWP) in the quarter to $3.61 billion, up from$3.5 billion in Q4’25. For FY’25, GWP rose to $15.12 billion compared to$14.21 billion in 2024.Additionally, n ...