XL Group plc To Announce Fourth Quarter And Full Year 2010 Results On Tuesday, February 8, 2011

HAMILTON, BERMUDA - January 12, 2011

Hamilton, Bermuda – January 12, 2011 – XL Group plc (“XL” or “the Company”) (NYSE: XL) announced today that it intends to release its Fourth Quarter and Full Year 2010 results after the close of regular stock market trading hours on Tuesday, February 8, 2011. A conference call to discuss the Company’s results will be held at 5 p.m. Eastern Time on Tuesday, February 8, 2011.The conference call can be accessed through a listen-only dial-in number or through a live webcast. To listen to the conference call, please dial (210) 795-0624 or (866) 617-1526: Passcode: “XL GLOBAL”. The webcast will be available at www.xlgroup.com and will be archived on XL’s website from approximately 9:00 p.m. Eastern Time on February 8, 2011, through midnight Eastern Time on March 8, 2011. A telephone replay of the conference call will also be available beginning at approximately 9:00 p.m. Eastern Time on February 8, 2011, until midnight Eastern Time on March 8, 2011, by dialing (402) 220-9768 or (800) 294- 3089.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.