WHITE MOUNTAINS INSURANCE GROUP LTD FILES (8-K) Disclosing Submission of Matters to a Vote of Security Holders

ITEM 5.07 Submission of Matters to a Vote of Security Holders. White Mountains Insurance Group, Ltd. (the "Company") held its 2013 Annual General Meeting of Members (the "2013 Annual Meeting") on May 23, 2013 in Bermuda.

As of April 1, 2013, the record date for the 2013 Annual Meeting, a total of 6,176,210 common shares were eligible to vote; however, in accordance with the Company's Bye-laws, direct and constructive holders of common shares (other than John J. Byrne and his affiliates except in connection with director voting) whose votes would otherwise confer 10% or more of the votes conferred by all the issued shares of the Company are subject to a cut-back that reduces their total voting power to under 10%. The results of the vote, after applying the voting cut-backs which are required by the Company's Bye-laws, are presented below. Proposal 1 - Election of the Class I Directors to a term ending in 2016. Nominee: Votes FOR Votes Withheld Broker Non-votes Morgan W. Davis 3,903,788 14,601

           445,225 Edith E. Holiday 3,641,726         276,663           445,225 Lowndes A. Smith 3,893,845          24,544           445,225    Proposal 2 - Election of Directors of Sirius International Insurance Corporation. Nominee:              Votes FOR  Votes Withheld  Broker Non-votes Jeffrey Davis         3,909,659           8,730           445,225 Lars Ek               3,909,588           8,801           445,225 Brian E. Kensil       3,909,669           8,720           445,225 Jan Onselius          3,909,630           8,759           445,225 Göran A. Thorstensson 3,909,485           8,904           445,225 Allan L. Waters       3,909,231           9,158           445,225    Proposal 3 - Election of Directors of HG Re, Ltd. Nominee:         Votes FOR  Votes Withheld  Broker Non-votes Sheila E. Nicoll 3,909,784           8,605           445,225 Kevin Pearson    3,909,797           8,592           445,225 Warren J. Trace  3,909,745           8,644           445,225 Allan L. Waters  3,909,591           8,798           445,225    Proposal 4 - Election of Directors of White Mountains Life Reinsurance (Bermuda) Ltd. Nominee:            Votes FOR  Votes Withheld  Broker Non-votes Jennifer L. Pitts   3,909,431           8,958           445,225 Christine H. Repasy 3,909,622           8,767           445,225 Warren J. Trace     3,909,235           9,154           445,225 Allan L. Waters     3,908,052          10,337           445,225    Proposal 5 - Election of Directors of White Shoals Re Ltd. Nominee:            Votes FOR  Votes Withheld  Broker Non-votes Christine H. Repasy 3,909,438           8,951           445,225 Warren J. Trace     3,909,246           9,143           445,225 Allan L. Waters     3,909,464           8,925           445,225    

--------------------------------------------------------------------------------

Proposal 6 - Election of Directors of Star Re Ltd. Nominee:

              Votes FOR  Votes Withheld  Broker Non-votes Christine H. Repasy   3,909,427           8,962           445,225 Göran A. Thorstensson 3,909,455           8,934           445,225 Warren J. Trace       3,909,438           8,951           445,225 Allan L. Waters       3,909,458           8,931           445,225   

Proposal 7 - Election of Directors of White Mountains Re Sirius Capital Ltd. Nominee:

              Votes FOR  Votes Withheld  Broker Non-votes Michael Dashfield     3,909,379           9,010           445,225 Lars Ek               3,909,443           8,946           445,225 Göran A. Thorstensson 3,909,446           8,943           445,225 Allan L. Waters       3,909,471           8,918           445,225    Proposal 8 - Election of Directors of Split Rock Insurance, Ltd. Nominee:         Votes FOR  Votes Withheld  Broker Non-votes Paul J. Brehm    3,909,609           8,780           445,225 Sarah A. Kolar   3,909,256           9,133           445,225 Sheila E. Nicoll 3,909,438           8,951           445,225 John C. Treacy   3,909,602           8,787           445,225    Proposal 9 - Election of Directors for Any New Designated Subsidiary. Nominee:          Votes FOR  Votes Withheld  Broker Non-votes Raymond Barrette  3,907,430          10,959           445,225 David T. Foy      3,909,638           8,751           445,225 Jennifer L. Pitts 3,909,446           8,943           445,225 Warren J. Trace   3,909,452           8,937           445,225   

Proposal 10 - Approval of the advisory resolution on executive compensation. Votes FOR Votes Against Abstained Broker Non-votes 4,454,101 28,436 3,145

           445,225    

Proposal 11 - Approval of share inventory for, and performance criteria in, the Company's Long-Term Incentive Plan. Votes FOR Votes Against Abstained Broker Non-votes 3,567,722 914,233 3,727

           445,225    

Proposal 12 - Approval of the appointment of PricewaterhouseCoopers LLP as the Company's Independent Registered Public Accounting Firm for 2013. Votes FOR Votes Against Abstained 4,907,383 21,148 2,376

--------------------------------------------------------------------------------