Arch Insurance Group's Debbie Landes to Take Over Technical Risk Division in Houston, TX

NEW YORK--(BUSINESS WIRE)--Aug. 31, 2004--Arch Insurance Group, a division of Arch Capital Group Ltd., announces that Debbie Landes has been promoted to regional vice president of our Technical Risk Division in Houston, Texas. In her new role, Ms. Landes will oversee underwriting activities of the Technical Risk business for Arch's Central Region, with responsibilities for profitability and production.

Ms. Landes is based in Houston and reports to Bill Palmer, executive vice president, Central Region, and Jerry Wosleger, senior vice president, Technical Risk.

“I am very pleased that we were able to promote such a worthy candidate as Debbie from within the Arch organization. She has been instrumental in building Arch's Technical Risk business and I am confident that she will excel in her new role”

"I am very pleased that we were able to promote such a worthy candidate as Debbie from within the Arch organization. She has been instrumental in building Arch's Technical Risk business and I am confident that she will excel in her new role," said Mr. Wosleger.

Ms. Landes has over 30 years experience in the insurance industry and joined Arch as an assistant vice president, in the Technical Risk Property division of the Central Region in June 2003. Prior to joining Arch, she was a senior Property Underwriter for Zurich Global Energy and served as their U.S. home office referral underwriter for Oil, Gas, Chemical and Petrochemical business. She began her insurance career in 1972 with CIGNA Property & Casualty holding various positions and assignments with her last 10 years at CIGNA being involved in the underwriting and marketing of global energy property accounts. Ms. Landes attended Texas Southmost University and holds a CIC designation.

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.