Sirius Group Announces Appointment of Monica Cramer Manhem as Chief Executive Officer of Sirius International Insurance Corporation Effective March 1, 2014; Goran Thorstensson Intends to Retire as Chairman At The End of 2014

9/4/2013

Hamilton, Bermuda – September 4, 2013 – Sirius International Insurance Group, Ltd. (“Sirius Group”) announced today that Monica Cramér-Manhem has been appointed Chief Executive Officer of Sirius International Insurance Corporation (“Sirius International”) effective March 1, 2014. Göran Thorstensson will remain CEO until that time, when he will become Chairman of Sirius International. He plans to retire at the end of 2014. Both are based in Stockholm, Sweden. Sirius Group is a wholly-owned subsidiary of White Mountains Insurance Group, Ltd. (NYSE:WTM).

Allan Waters, Chief Executive of Sirius Group, said that “Monica Cramér-Manhem is a Sirius veteran with a wealth of knowledge and experience in the global reinsurance marketplace. After considering both internal and external candidates, it is clear that Monica is the right person to succeed Göran and maintain the strong underwriting culture that he has so successfully fostered for more than 20 years. Her long established partnership with Jan Onselius, Chief Underwriting Officer, and Lars Ek, Chief Financial Officer, will ensure a smooth transition. I am extremely pleased that Göran will stay on to facilitate the transition.”

Göran Thorstensson said “The appointment of Monica underscores Sirius’ continued focus on underwriting profitability and market presence. Her deep and long standing experience of our business from all corners of the globe makes her perfectly suited to lead the Company to further success in a changing and challenging market environment.”

Monica Cramér-Manhem commented, “I am honored by the vote of confidence given and look forward to continuing work with Göran, Jan, Lars and the rest of the Sirius team to meet the expectations of our clients and owners alike in this transition.”


ADDITIONAL INFORMATION

White Mountains is a Bermuda-domiciled financial services holding company traded on the New York Stock Exchange and the Bermuda Stock Exchange under the symbol WTM. Additional financial information and other items of interest are available at the Company's web site located at www.whitemountains.com

© 2018 Sirius International Insurance Group Ltd. All Rights Reserved.

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