Allied World Earnings Release Today – Conference Call Details

Bermuda-based Allied World Assurance Company Holdings, Ltd. will release its financial results for the fourth quarter and for the year ended December 31, 2006 today, February 12, 2007, after the market closes.

President and CEO Scott Carmilani and CFO Joan Dillard will host a conference call on Tuesday, February 13, 2007, at 8:30 am (Eastern) to discuss the fourth quarter and year end 2006 financial results.

The conference call can be accessed by dialing (866) 203-3436 (U.S. and Canada callers) or (617) 213-8849 (international callers) and entering the passcode 43663034 approximately ten minutes prior to the call. A live webcast of the call will be available online at: www.awac.com.