X0303 4 2011-02-23 0000776867 WHITE MOUNTAINS INSURANCE GROUP LTD WTM 0001188198 SEELIG ROBERT LAWRENCE C/O WHITE MOUNTAINS INSURANCE GROUP, LTD 80 SOUTH MAIN STREET HANOVER NH 03755 0 1 0 0 Managing Dir & General Counsel Common Shares (restricted) 2011-02-23 4 A 0 2550 0 A 4475 D Common Shares 7700 D Common Shares 386 I By 401(k) On February 23, 2011, the Reporting Person received a restricted share award of 2,550 Common Shares. The restricted shares vest on January 1, 2014. Reflects reclassification of 6,500 Common Shares from restricted to unrestricted as of December 31, 2010. Reflects accumulation of 53 WTM Common Shares in Reporting Person's Company 401(k) account since his last filed report. WTM Common Shares are purchased at fair market value on the date of purchase. The information in this report is based on a plan statement dated as of Feb 24, 2011. Jason R. Lichtenstein, by Power of Attorney 2011-02-25