All press releases below speak as of the date of their issuance, and are provided for historical reference purposes only. They contain information that was current at the time of the release, but that may no longer be current. Readers should not rely on the continued accuracy of any such material. All readers should carefully check the dates of issuance of the releases. White Mountains assumes no obligation and does not intend to update, correct or modify any of the material contained in the releases below.

Moreover, certain press releases may contain forward-looking statements that involve risks and uncertainties, as well as assumptions that, if they ever materialize or prove incorrect, could cause the results of White Mountains and its consolidated subsidiaries to differ materially from those expressed or implied by such forward-looking statements and assumptions. All statements other than statements of historical fact are statements that could be deemed forward-looking statements, including but not limited to any statements of belief and any statements of assumptions underlying the foregoing. The risks, uncertainties and assumptions referred to above include risks and assumptions set forth in or implied by such releases, and that are otherwise described from time to time in White Mountains' Securities and Exchange Commission reports.

Issue Date Title 05/22/13 Sirius Group Declares Semi-Annual Preference Share Dividend 05/14/13 Sirius Group Announces Capital Markets Strategic Initiative 05/06/13 White Mountains To Hold 2013 Annual Investor Information Meeting On June 7 04/29/13 White Mountains Reports Adjusted Book Value Per Share of $606, Up 3.3% for the Quarter 04/01/13 White Mountains Solutions Completes American Fuji Runoff Acquisition 03/01/13 White Mountains Declares Annual Dividend 02/19/13 White Mountains Solutions to Acquire Empire Insurance from Leucadia National 02/05/13 White Mountains Reports Adjusted Book Value Per Share of $588, Up 8.6% for the Full Year 2012 12/11/12 White Mountains Solutions to Acquire American Fuji from AIG 12/03/12 White Mountains Solutions Completes Runoff Acquisitions 11/14/12 Sirius Group Declares Semi-annual Preference Share Dividend 10/30/12 White Mountains Reports Adjusted Book Value Per Share Of $574 10/18/12 Chairman’s Letter to Shareholders 07/27/12 White Mountains Reports Adjusted Book Value Per Share Of $565 07/23/12 White Mountains Funds a New Municipal Bond Insurance Platform, Build America Mutual and HG Re 06/26/12 White Mountains Solutions to Acquire Two Subsidiaries of American General 06/20/12 White Mountains Solutions to Acquire Two Runoff Subsidiaries of PICO Holdings, Inc. 05/25/12 White Mountains Announces Additional Share Repurchase Authorisation 05/22/12 Sirius Group Declares Semi-Annual Preference Share Dividend 05/01/12 White Mountains To Hold 2012 Annual Investor Information Meeting On June 13 04/27/12 White Mountains Reports Adjusted Book Value Per Share Of $565, Up 4.5% In The Quarter 03/28/12 White Mountains Announces Final Results of its Tender Offer 03/23/12 White Mountains Announces Preliminary Results of Its Tender Offer 02/24/12 White Mountains Declares Annual Dividend 02/23/12 White Mountains Repurchases From Berkshire Hathaway all its Remaining WTM Shares for $500 Per Share and Announces Self-Tender Offer to Purchase up to 1,000,000 of its Common Shares at $500 Per Share 02/03/12 White Mountains Reports Adjusted Book Value Per Share of $542, a 23% Increase for the Year 01/06/12 Sirius Group Acquires Old Lyme Runoff Portfolio 12/19/11 Dan Wilson Named President and CEO of Sirius America, Dwight Evans to Retire and Remain on as Advisor 11/17/11 White Mountains Announces Final Results of Its Tender Offer 11/15/11 White Mountains Announces Preliminary Results of Its Tender Offer 11/15/11 Sirius Group Declares Semi-Annual Preference Share Dividend 10/28/11 White Mountains Reports Adjusted Book Value Per Share of $436 10/14/11 White Mountains to Commence Self-Tender Offer to Purchase Up to 300,000 of its Common Shares 10/12/11 White Mountains Completes Reorganization and Rebranding of Reinsurance Business 10/07/11 White Mountains Completes Sale of Esurance and Answer Financial 09/21/11 White Mountains Announces Final Results of Its Tender Offer 09/16/11 White Mountains Announces Preliminary Results of Its Tender Offer 09/10/11 White Mountains Reorganizes Reinsurance Business 08/17/11 White Mountains to Commence Self-Tender Offer to Purchase up to 300,000 of Its Common Shares 07/29/11 White Mountains Reports Adjusted Book Value Per Share of $448 05/25/11 White Mountains Re Declares Semi-Annual Preference Share Dividend 05/23/11 White Mountains Re Announces New Syndicate at Lloyd's 05/18/11 White Mountains to Sell Esurance and Answer Financial to Allstate 04/29/11 White Mountains Reports Adjusted Book Value Per Share of $447, Up 1.6% in the Quarter 04/27/11 White Mountains to Hold 2011 Annual Investor Information Meeting on June 22 02/25/11 White Mountains Declares Annual Dividend 02/04/11 White Mountains Reports Adjusted Book Value Per Share of $441 11/16/10 White Mountains Re Declares Semi-Annual Preference Share Dividend 10/29/10 White Mountains Reports Adjusted Book Value Per Share of $429 10/27/10 25 Years Of Creating Value 10/22/10 White Mountains Re Announces Accident & Health Organizational Changes 08/26/10 White Mountains Announces Additional Share Repurchase Authorisation 07/30/10 White Mountains Reports Adjusted Book Value Per Share of $406 05/27/10 White Mountains Reports Results of Shareholder Vote 05/27/10 White Mountains Re Declares Semi-Annual Preference Share Dividend 04/29/10 White Mountains Reports Adjusted Book Value Per Share of $411 04/16/10 White Mountains to Hold 2010 Annual Investor Information Meeting On May 18 03/24/10 White Mountains Releases Preliminary Estimates of Losses Caused By Chilean Earthquake and European Windstorm Xynthia 02/26/10 White Mountains Declares Annual Dividend 02/03/10 White Mountains Reports Adjusted Book Value Per Share of $417, Up 18% in 2009 01/22/10 White Mountains Re to Acquire Central National 11/17/09 White Mountains Re Declares Semi-Annual Preference Share Dividend 10/30/09 White Mountains Reports Adjusted Book Value Per Share of $406, Up 7% in the Quarter 07/31/09 White Mountains Reorganizes Bermuda Reinsurance Unit 07/31/09 White Mountains Reports Adjusted Book Value Per Share of $378 06/05/09 White Mountains Reports Results of Shareholder Vote 06/05/09 White Mountains Re Declares Semi-Annual Preference Share Dividend 05/01/09 White Mountains Reports Flat Adjusted Book Value Per Share of $352 04/29/09 White Mountains to Hold 2009 Annual Investor Information Meeting on May 20 04/24/09 White Mountains Announces Change of Address 02/27/09 White Mountains Declares Annual Dividend 02/06/09 White Mountains Reports Adjusted Book Value Per Share of $353 12/16/08 White Mountains Re Announces Management Changes -- Chokel to Retire and Remain Risk Advisor at WTM 11/21/08 White Mountains Re Declares Semi-Annual Preference Share Dividend 10/31/08 White Mountains Reports Adjusted Book Value per Share of $405 10/13/08 White Mountains Expects Third Quarter Adjusted Book Value Per Share Between $400 and $420 09/08/08 Jeff Davis to Join White Mountains as Chief Actuary 08/28/08 White Mountains Adopts $1 Per Share Annual Dividend Policy 08/01/08 White Mountains Reports Adjusted Book Value Per Share of $444 06/09/08 Reminder: White Mountains Holds 2008 Annual Investor Information Meeting on June 17 05/30/08 White Mountains Reports Results of Shareholder Vote 05/30/08 White Mountains Declares Second Quarter Dividend 05/30/08 WHITE MOUNTAINS RE DECLARES SEMI-ANNUAL PREFERENCE SHARE DIVIDEND 05/22/08 White Mountains to Hold 2008 Annual Investor Information Meeting on June 17 05/02/08 White Mountains Reports Tangible Book Value Per Share of $443 04/23/08 Folksamerica Re Announces Three Promotions 04/23/08 Neal Wasserman Becomes President of Folks Re Solutions 03/10/08 White Mountains Enters Exchange Agreement for Substantially All 1,724,200 WTM Common Shares Held by Berkshire Hathaway 02/29/08 White Mountains Declares First Quarter Dividend 02/28/08 White Mountains Re Announces Appointment Dwight Evans as CEO of Folksamerica Re and of Warren Trace as President of White Mountains Re Bermuda 02/04/08 White Mountains Reports Tangible Book Value Per Share of $444 01/22/08 White Mountains Acquires 42% Stake in Answer Financial 01/07/08 White Mountains Acquires Helicon Re Holdings 11/15/07 White Mountains Declares Fourth Quarter Dividend 11/05/07 White Mountains Reports Tangible Book Value Per Share of $435 10/26/07 White Mountains Repurchases 282,341 Shares for $500 Per Share 08/24/07 White Mountains Declares Third Quarter Dividend 08/24/07 Yves Brouillette Elected to White Mountains Insurance Board 08/06/07 Dwight Evans to Join White Mountains Re Team 08/02/07 White Mountains Reports Tangible Book Value Per Share of $422 06/18/07 White Mountains Re Declares Semi-Annual Preference Share Dividend 06/01/07 Reminder: White Mountains Holds 2007 Annual Investor Information Meeting On June 8 05/25/07 White Mountains Reports Results of Shareholder Vote 05/25/07 White Mountains Declares Second Quarter Dividend 05/17/07 White Mountains Re Group, Ltd. Prices $250 Million of its Fixed/Floating Perpetual Non-Cumulative Preference Shares 05/16/07 White Mountains Re Group, Ltd. to Offer $250 Million of its Fixed/Floating Perpetual Non-Cumulative Preference Shares 05/14/07 White Mountains to Hold 2007 Annual Investor Information Meeting on June 8 05/02/07 White Mountains Reports Tangible Book Value Per Share of $415 04/26/07 NATIXIS and White Mountains Create Pentelia Capital Management and Close Pentelia Limited, Its First Fund, at $600 Million 04/02/07 White Mountains' 2006 Management Report Now Available 03/14/07 White Mountains Re Group, Ltd. Prices $400 Million Of 6.375% Senior Notes Due 2017 03/13/07 White Mountains Re Group, Ltd. to Offer $400 Million of its Senior Notes Due 2017 03/06/07 Allan Waters Elected President & CEO of White Mountains Reinsurance 02/23/07 White Mountains Declares Fourth Quarter Dividend 02/02/07 White Mountains Grows Book Value per Share by 21% to $406 in 2006 01/22/07 Ray Barrette Elected Chairman and CEO of White Mountains 12/22/06 White Mountains Re Completes Acquisition of Mutual Service Casualty Insurance Company 11/17/06 White Mountains Announces Authorisation to Repurchase Shares 11/17/06 White Mountains Declares Fourth Quarter Dividend 11/17/06 Morgan Davis Elected to White Mountains' Board 11/08/06 White Mountains Announces the Pricing of OneBeacon's Initial Public Offering 11/02/06 White Mountains Reports Book Value Per Share of $373 in the Third Quarter 10/03/06 Russ Fletcher to Join White Mountain's RE Team 08/07/06 White Mountains Re Announces Senior Management Changes 08/04/06 White Mountains Announces OneBeacon Initial Public Offering 08/03/06 White Mountains Declares Third Quarter Dividend 08/03/06 Ray Barrette Elected to White Mountains' Board 08/03/06 White Mountains Re Completes Sale of Sirius America to Investor Group Led by Lightyear Capital 07/28/06 White Mountains Reports Book Value Per Share of $355 in the Second Quarter 07/24/06 White Mountains Announces Second Quarter Earnings Release Schedule 06/19/06 White Mountains to Host Investor Conference Call 06/16/06 White Mountains Increases its Loss Estimates from 2005 Storms 06/02/06 Reminder: White Mountains Holds 2006 Annual Investor Information Meeting On June 9 05/26/06 White Mountains Declares Second Quarter Dividend 05/26/06 White Mountains Reports Results of Shareholder Vote 05/26/06 Jack Byrne Elected Chairman of White Mountains 05/15/06 White Mountains to Hold 2006 Annual Investor Information Meeting on June 9 04/27/06 White Mountains Reports Book Value Per Share of $352 04/12/06 White Mountains Re Agrees to Sell Sirius America to Investor Group Led by Lightyear Capital 02/24/06 White Mountains Declares First Quarter Dividend 02/24/06 White Mountains Announces the Retirement of Director Frank Olson 02/06/06 Tom Hutton Joins White Mountains' Management Team 02/02/06 White Mountains Reports Book Value Per Share of $343 11/18/05 White Mountains Declares Fourth Quarter Dividend 11/18/05 Allan Waters Elected to White Mountains' Board 11/01/05 White Mountains Reports Book Value Per Share Of $345 10/17/05 Steve Fass Elected President and CEO of White Mountains 09/30/05 White Mountains Estimates Impact of Hurricane Rita 09/09/05 White Mountains Releases Early Estimates of Losses Caused By Hurricane Katrina 08/26/05 White Mountains Declares Third Quarter Dividend 07/29/05 White Mountains' Tangible Book Value Per Share Increases 4% to $359 in the Second Quarter 07/27/05 OneBeacon Agrees to Sell National Farmers Union Company to QBE Insurance 07/01/05 Mike Miller Appointed CEO of OneBeacon 06/20/05 Michael Frinquelli Elected to White Mountains' Board 06/20/05 White Mountains Restructures Prospector Partners Relationship 05/19/05 White Mountains Declares Second Quarter Dividend 05/19/05 White Mountains Reports Results of Shareholder Vote 05/17/05 Reminder: White Mountains Holds 2005 Annual Investor Information Meeting on May 26 04/29/05 White Mountains Tangible Book Value Per Share at $348 04/25/05 White Mountains to Hold 2005 Annual Investor Information Meeting on May 26 04/11/05 Miller to Join OneBeacon as Chief Operating Officer 03/08/05 Jack Byrne Adopts 10b5-1 Plan 03/01/05 David Foy, CFO, to Speak at AIFA Midwinter Insurance Conference 02/25/05 White Mountains Increases Annual Dividend to $8 02/10/05 Rob Lusardi Joins White Mountains' Management Team 02/02/05 White Mountains' Book Value Per Share at $343 11/11/04 Sirius Completes Acquisition of Tryg-Baltica International 10/29/04 White Mountains Book Value Per Share Increases to $320 10/22/04 White Mountains Reports Results of Shareholder Vote 09/28/04 White Mountains Comments on Impact of Hurricane Ivan 09/14/04 White Mountains Comments on Impact of Hurricane Frances 08/26/04 Edith Holiday Elected to White Mountains' Board 08/23/04 White Mountains Comments on Impact of Hurricane Charley 08/02/04 Investor Group Led by White Mountains and Berkshire Hathaway Completes Acquisition of Safeco Life And Investments 07/28/04 White Mountains Book Value Per Share Increases to $313 06/30/04 Berkshire Hathaway Completes Exercise of Warrants to Acquire White Mountains Common Shares 05/26/04 Berkshire Hathaway to Exercise Warrants to Acquire White Mountains Common Shares 05/21/04 Bruce Berkowitz Elected to White Mountains' Board 04/30/04 White Mountains Book Value Per Share Rises to $309 04/21/04 White Mountains to Hold 2004 Annual Investor Information Meeting on May 27 04/19/04 White Mountains Forms White Mountains Re to Manage Global Reinsurance Operations 04/16/04 White Mountains Completes Acquisition of Sirius Insurance Group 03/31/04 OneBeacon Purchases Atlantic Mutual's Commercial Insurance Business 03/31/04 Folksamerica Completes Acquisition of Sierra Insurance Group from Sierra Health Services, Inc. 03/31/04 White Mountains Announces the Retirement of Tom Kemp as Director 03/15/04 White Mountains, Berkshire Hathaway and Other Investors to Acquire Safeco Life and Investments 03/12/04 White Mountains Announces Block Trade of Common Shares of Montpelier Re Holdings, Ltd. 03/11/04 White Mountains Withdraws Proposed Secondary Offering of Montpelier Re Shares 02/26/04 White Mountains Announces The Retirement Of Mark Byrne As Director 02/26/04 White Mountains Declares 2004 Dividend 02/03/04 White Mountains Reports 13% Growth In Book Value For 2003 12/09/03 White Mountains to Acquire Sirius Insurance Group 12/05/03 OneBeacon to Purchase Atlantic Mutual's Commercial Insurance Business 11/25/03 Folksamerica Acquires Sierra Insurance Group from Sierra Health Services, Inc. 11/20/03 Lon Smith and Allan Waters Elected Directors 10/30/03 White Mountains Book Value Per Share up Slightly to $282 10/08/03 BSX Approves Secondary Listing of Common Shares of White Mountains Insurance Group, Ltd. 10/03/03 Folksamerica Acquires Renewal Rights from CNA Re 09/11/03 Cavoores Elected CEO of Onebeacon 07/31/03 White Mountains Continues Strong Growth In Book Value 06/27/03 White Mountains Files $2 Billion Shelf Registration Statement 05/20/03 White Mountains Reports Results of Shareholder Vote 05/14/03 White Mountains Prices $700 Million Senior Notes Offering 05/12/03 White Mountains Announces Offering of Senior Notes 04/29/03 White Mountains Reports First Quarter 2003 Results 04/22/03 White Mountains Announces 2003 Annual Investor Information Meeting 02/27/03 David Foy to Join White Mountains as CFO 02/27/03 White Mountains Declares 2003 Dividend 02/24/03 White Mountains Announces the Retirement of Patrick Byrne as Director 02/18/03 White Mountains Reports Improved 2002 Results 01/08/03 White Mountains Announces the Relocation of its Principal Executive Office 11/21/02 White Mountains Announces Election of Ray Barrette as President and CEO 11/01/02 White Mountains Reports Third Quarter 2002 Results 10/24/02 White Mountains Closes Private Placement Of Equity 10/18/02 White Mountains Announces Private Placement Of Equity 08/06/02 New Jersey Skylands Targets Local Auto Market 07/30/02 White Mountains Reports Second Quarter 2002 Results 07/30/02 White Mountains Announces New Date for 2002 Annual Investor Meeting 07/22/02 OneBeacon Names Paul LaPerriere Senior Vice President of Marketing 05/24/02 White Mountains Reports Results of Shareholder Vote 05/15/02 White Mountains Announces Public Offering of Common Shares 05/15/02 White Mountains Postpones 2002 Annual Investor Meeting 05/14/02 White Mountains Reports First Quarter 2002 Results 05/13/02 OneBeacon Names Drew Carnase Senior Vice President Commercial Lines 05/07/02 Benson Named President & CEO of AutoOne Insurance 03/29/02 OneBeacon Names Chuck Chokel a Managing Director 03/01/02 Jack Byrne Returns to White Mountains as Chief Executive Officer 03/01/02 White Mountains Declares 2002 Dividend 02/20/02 White Mountains Reports 2001 Results 12/19/01 OneBeacon Management Team Members Take on New Roles 12/14/01 Montpelier Re Commences Operations 12/11/01 White Mountains' Affiliate Acquires Folksam's International Reinsurance Operations 12/04/01 White Mountains Names Mark Byrne to the Board of Directors 12/03/01 OneBeacon Elects Barrette Chairman; Cavoores Becomes President and COO 11/02/01 White Mountains to Form Bermuda Reinsurer 10/31/01 Letter to Shareholders 10/31/01 Liberty Mutual and OneBeacon Reach Definitive Agreement on Business Transfer 10/29/01 Folksamerica Boosts Capital 10/25/01 New LAD Servicing Carrier Joins New York Auto Insurance Fray 09/20/01 OneBeacon Creating New LAD Servicing Carrier in New York 09/14/01 OneBeacon Loss From Tuesday's Events Could Reach $175 Million 09/13/01 OneBeacon Announces Partnership with Liberty Mutual; A.M. Best Rating Remains Unaffected 09/05/01 Liberty Mutual and OneBeacon Partner on Independent Agency Insurance Business 08/23/01 White Mountains Reports Results of Shareholder Vote 08/20/01 2001 Annual Investor Meeting Information 07/25/01 White Mountains Reports Preliminary Underwriting Results of OneBeacon 06/12/01 White Mountains Corporate Governance