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NEW YORK, December 9, 2011 –XL Group plc’s (“XL”) (NYSE: XL) North America Property & Casualty unit today adds Ken Riegler as President of its North America Casualty group. Mr. Riegler will be based in New York and report to Seraina Maag, XL’s Chief Executive for North America Property & Casualty.According to Ms. Maag: “Ken’s 20 years of risk management experience boosts our expertise and primary casualty underwriting resources. His diverse experience with National, US-based Multinational and Foreign accounts will help us push along our plans to extend our primary casualty programs to a broader client base to profitably grow our book of business.”Mr. Riegler joins XL from ACE USA where he served President of Foreign Casualty group and the North American Multi National Client Group, operating out of home offices in New York and Philadelphia and managing nine regional and six satellite offices. Prior to his recent position, he was responsible for ACE Risk Management’s business throughout the Western half of the US. Before joining ACE in 1999, Mr. Riegler held regional management and underwriting positions with Reliance National and New Jersey Manufacturers Insurance Company. He earned his Bachelor of Science in Business Administration, from Springfield College in 1991 and his Masters of Business Administration/International Finance from St. John's University in 1996.About XL’s Insurance SegmentThe Insurance segment of XL Group plc offers property, casualty, professional and specialty insurance products globally. Businesses that are moving the world forward choose XL as their partner. To learn more, visit www.xlgroup.com/insuranceAbout XL Group plcXL Group plc, through its subsidiaries, is a global insurance and reinsurance company providing property, casualty and specialty products to industrial, commercial and professional firms, insurance companies and other enterprises throughout the world. XL is the company clients look to for answers to their most complex risks and to help move their world forward. Its principal offices are located at No.1 Hatch Street Upper, 4th Floor, Dublin 2, Ireland. To learn more, visit www.xlgroup.com