XL Group plc To Present At Macquarie Bermuda in Boston Conference On September 21, 2010

HAMILTON, BERMUDA - September 13, 2010

Hamilton, Bermuda – September 13, 2010 -XL Group plc (NYSE: XL) announced today that Chief Financial Officer Irene M. Esteves is scheduled to present at the Macquarie Bermuda in Boston Conference at the Boston Harbor Hotel on Tuesday, September 21, 2010 at 9:40 a.m. Eastern Time.A live webcast of Ms. Esteves’ presentation will be available via www.xlgroup.com. A replay of the presentation will be available via www.xlgroup.com following the live webcast and will be archived there for approximately 30 days following the presentation date.XL 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 on a worldwide basis. Its principal executive offices are located at No. 1 Hatch Street Upper, 4th Floor, Dublin 2, Ireland. More information about XL Group plc is available at www.xlgroup.com