X0304 5 2011-12-31 0 0 0000776867 WHITE MOUNTAINS INSURANCE GROUP LTD WTM 0001181360 BARRETTE RAYMOND JOSEPH RENE C/O WHITE MOUNTAINS INSURANCE GROUP, LTD 80 SOUTH MAIN STREET HANOVER NH 03755 1 1 0 1 Chief Executive Officer Chairman of the Board Common Shares 2011-02-22 5 G 0 2276 0 D 17469 I By Grantor Retained Annuity Trust Common Shares 2011-12-20 5 G 0 1000 0 D 10368 D Common Shares 2011-12-27 5 G 0 725 0 D 9643 D Common Shares (restricted) 22000 D Common Shares 20820 I By wife Common Shares 10751 I By daughter Common Shares 5230 I By IRA Common Shares 526 I by 401(k) Common Share Options 742.00 2017-01-20 Common Shares 125000 125000 D Gifts made to non-dependent child on February 22, 2011 and July 14, 2011. Reflects net increase in GRAT holdings of 4,590 Common Shares, all of which Reporting Person includes in his Sec. 16 holdings. Gift made to family charitable foundation in which Reporting Person disclaims beneficial ownership. Reflects gifts made by Reporting Person to wife and daughter, and net shares transfers to GRATs, all of which Reporting Person includes in his Sec. 16 holdings. Reflect receipt of gifts in 2011 of 14,705 Common Shares from the Reporting Person. Reflects receipt of gifts in 2011 of 2,276 Common Shares from the Reporting Person. All the options are vested and immediately exerciseable. Jason R. Lichtenstein, by Power of Attorney 2012-02-02