W. R. Berkley Corporation Has Been Informed That Mitsui Sumitomo Insurance Co. Has Acquired Beneficial Ownership of At Least 12.5% of the Company's Shares Pursuant to Previously Announced Agreements with the Berkley Family

Core Viewpoint - W. R. Berkley Corporation has been informed that Mitsui Sumitomo Insurance Co., Ltd. has acquired beneficial ownership of at least 12.5% of the Company's outstanding common stock [1] Group 1 - Mitsui Sumitomo Insurance Co., Ltd. is a leading Japanese property and casualty insurance carrier [1] - The acquisition is part of previously announced agreements with a company owned by members of the Berkley family [1]