Allied World Announces Retirement of Sue Chmieleski, President, North American Healthcare; Appoints Holly Meidl, Senior Vice President, North American Healthcare

Mrs. Chmieleski joined Allied World in 2008 as part of the company’s acquisition of Darwin Professional Underwriters, and has since held a succession of senior management positions, including serving as President, US Professional Liability; Branch Manager of Allied World’s Farmington operations; and head of Allied World Risk Management for Healthcare and Professional Lines.

Lou Iglesias, President, North American Insurance at Allied World, said, “Sue has played a pivotal role in building and developing our healthcare platform to where it is today. Her extensive experience in healthcare, loss control and risk management has been invaluable and we thank her for her commitment and contributions.”

Mr. Iglesias continued, “I am also pleased to announce the appointment of Holly Meidl as Senior Vice President, North American Healthcare. Holly has over 30 years of experience within the insurance industry and will be responsible for our North American healthcare platform succeeding Sue. She joins Allied World from Marsh USA, where she most recently served as Managing Director and US National Practice Leader for healthcare since 2007. She held a succession of healthcare-related management positions with Marsh since 2003, and prior to that, held various roles with Sedgwick James, Fred S. James & Co. and J.H. Minets & Co. Holly will be based in Bermuda, pending Bermuda immigration approvals, and we look forward to her joining our team.”

Allied World Assurance Company Holdings, AG, through its subsidiaries and brand known as Allied World, is a global provider of innovative property, casualty and specialty insurance and reinsurance solutions. Allied World offers superior client service through a global network of offices and branches. All of Allied World’s rated insurance and reinsurance subsidiaries are rated A by A.M. Best Company, A by Standard & Poor’s, and A2 by Moody’s, and our Lloyd’s Syndicate 2232 is rated A+ by Standard & Poor’s and AA- by Fitch.

Any forward-looking statements made in this press release reflect our current views with respect to future events and financial performance and are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Such statements involve risks and uncertainties, which may cause actual results to differ materially from those set forth in these statements. For example, our forward-looking statements could be affected by pricing and policy term trends; increased competition; the adequacy of our loss reserves; negative rating agency actions; greater frequency or severity of unpredictable catastrophic events; the impact of acts of terrorism and acts of war; the company or its subsidiaries becoming subject to significant income taxes in the United States or elsewhere; changes in regulations or tax laws; changes in the availability, cost or quality of reinsurance or retrocessional coverage; adverse general economic conditions; and judicial, legislative, political and other governmental developments, as well as management’s response to these factors, and other factors identified in our filings with the U.S. Securities and Exchange Commission. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date on which they are made. We are under no obligation (and expressly disclaim any such obligation) to update or revise any forward-looking statement that may be made from time to time, whether as a result of new information, future developments or otherwise.