Arch Insurance Group Names Joseph M. Vierling Vice President of Contractors All Risk, Erection All Risk

NEW YORK--(BUSINESS WIRE)--Dec. 1, 2003--Arch Insurance Group, a division of Arch Capital Group Ltd., today announced that Joseph M. Vierling has been named to the position of vice president, Contractors All Risk, Erection All Risk (CAR/EAR), beginning December 1. In his new role, Mr. Vierling will focus on developing and growing Arch's new CAR/EAR program within the global construction community. Mr. Vierling will be based at Arch Insurance Group's New York City offices and will report to Tom Kaiser, president, Property, Marine and Energy.

"Joseph's expertise in the fields of global property and world-wide construction ventures make him a valuable addition to Arch's team. His talent and abilities will contribute to the growth of our position within the CAR/EAR marketplace. He is a skilled professional and I look forward to working with him," said Mr. Kaiser.

“Joseph's expertise in the fields of global property and world-wide construction ventures make him a valuable addition to Arch's team. His talent and abilities will contribute to the growth of our position within the CAR/EAR marketplace. He is a skilled professional and I look forward to working with him”

Mr. Vierling joins Arch with more than 15 years of experience in the fields of engineered risk and global property. Prior to joining Arch, he was associate product line manager for Swiss Reinsurance America Corporation - responsible for all engineered risk, CAR/EAR, completed civil works and operational energy business. Before that, he worked for Kemper Insurance Companies as their global property underwriting manager. Mr. Vierling has a Bachelor of Science in Mechanical Engineering from Polytechnic University in Brooklyn, New York and began his insurance career at Industrial Risk Insurers (IRI) in 1988.

Arch Insurance Group is a division of Arch Capital Group Ltd., a Bermuda-based company that provides insurance and reinsurance on a worldwide basis through its wholly owned subsidiaries. Arch Insurance Group's principal insurance subsidiaries - Arch Insurance Company, Arch Specialty Insurance Company and Arch Excess & Surplus Insurance Company - are rated A- (Excellent) by A.M. Best. For more information, visit www.archinsurance.com.

Cautionary Note Regarding Forward-Looking Statements

The Private Securities Litigation Reform Act of 1995 provides a "safe harbor" for forward-looking statements. This release or any other written or oral statements made by or on behalf of Arch Capital Group Ltd. and its subsidiaries (collectively, the "Company") may include forward-looking statements which reflect the Company's current views with respect to future events and financial performance. Forward-looking statements involve the Company's current assessment of risks and uncertainties, which may cause actual events and results and prospects to differ materially from those expressed or implied in these statements. Certain information regarding such risks and uncertainties is set forth in the Company's filings with the Securities and Exchange Commission. The Company undertakes no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events or otherwise.