Montpelier Estimates Increase in Q4 Book Value per Share to $22.60-22.70

Montpelier Re Holdings Ltd. (NYSE: MRH) today announced that it currently expects its December 31, 2011 fully converted book value per share will be between $22.60 and $22.70, an increase of approximately 2% over the third quarter of 2011 after taking into account common share dividends declared during the quarter. The Company noted that its estimated quarterly increase in book value includes approximately $30 million in net realized and unrealized investment and foreign exchange gains, an $11 gain from the sale of Montpelier U.S. Insurance Company and the effects of $20 million of common share repurchases. As a result of the MUSIC sale, the Company notes that its expected increase in its fully converted tangible book value per share will be approximately 3% for the quarter. The Company further announced that it currently estimates a fourth quarter net operating loss of between $0.25 and $0.35 per common share. The net operating loss estimate includes the following: (i) the net financial impact of the severe flooding in Thailand of approximately $40 million; (ii) the net financial impact of other catastrophe events occurring during 2011 of approximately $26 million, including those occurring in the fourth quarter; and (iii) approximately $18 million of net favorable prior year loss reserve development.