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NEW YORK, November 3, 2011 – To expand its Excess Casualty business globally, the XL Group’s North America Property & Casualty insurance unit announced the arrival of Lorraine Seib as President of its Excess Casualty team. Reporting to Seraina Maag, Chief Executive of XL’s North America Property & Casualty insurance group and based in New York, Ms. Seib will manage XL’s global Excess Casualty business with underwriting operations in New York, Bermuda, Dublin, London and Toronto as well as US field operations in Boston, Chicago, Los Angeles and San Francisco.According to Ms. Maag, “XL has strong roots as an Excess Casualty market with its birth in Bermuda to address business’ casualty needs when adequate insurance coverage was hard to come by. While we celebrate the 25th anniversary of those beginnings, we’re looking ahead to our next 25 years with plans to extend our Excess Casualty global capabilities into markets and industries that can benefit most from our expertise.”“With over 30 years of insurance underwriting and management experience, Lorraine steps into this new position with a proven track record of not only producing profitable growth but bringing together multiple business units to work toward one cohesive goal,” Ms. Maag noted. “Under Lorraine’s direction, we’re looking to maximize our global Excess Casualty capacity and Lead Umbrella capabilities.”Ms. Seib joins XL from Travelers where she served as President of Excess Casualty since 2005, managing the company’s Excess Casualty business, including its Lead Umbrella business, with underwriting capabilities in 22 offices. Prior to her most recent position, she served as St. Paul/Travelers’ Chief Underwriting Officer for Excess Casualty, stepping into this position following St. Paul’s acquisition of Kemper’s Excess Casualty business unit, where she also served as Chief Underwriting Officer. Her professional career also includes tenure with Reliance National and Chubb Custom Market. Ms. Seib earned her BS in Criminal Justice from the State University of New York, Brockport.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 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, Dublin2, Ireland. To learn more, visit