ARCH CAPITAL GROUP LTD.

Arch Capital Group Ltd. is a publicly listed Bermuda exempted company with approximately $21.1 billion in capital and is part of the S&P 500 index. The company provides insurance, reinsurance, and mortgage insurance on a worldwide basis through its subsidiaries. Arch Capital focuses on specialty lines of insurance and reinsurance and has operations in Bermuda, the U.S., the U.K., Europe, Canada, and Australia. The company's insurance operations are conducted through Arch Insurance (Bermuda), Arch Insurance Company, Arch Specialty Insurance Company, Arch Indemnity Insurance Company, Arch Property Casualty Insurance Company, and McNeil, a specialized risk manager and program administrator based in Cortland, New York. Arch Insurance Group's strategy is to operate in lines of business where underwriting expertise can make a meaningful difference in operating results, focus on talent-intensive rather than labor-intensive business, and maintain a disciplined underwriting philosophy. Arch Capital's website is www.archgroup.com, and its common shares are traded on the NASDAQ stock market under the ticker symbol "ACGL." The company's insurance operations are classified into three underwriting segments – insurance, reinsurance, and mortgage – and two operating segments – corporate and 'other.' For more information on Arch Capital's business, please refer to the full text of the Form 10-K filing.