X0306 4 2015-05-27 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) 2015-05-27 4 A 0 250 0 A 6875 D Common Shares 13462 D Common Shares 5 I by wife and dependent children Common Shares 536 I By 401(k) On May 27, 2015, the Reporting Person received a restricted share award of 250 Common Shares which vest on January 1, 2018. Reflects accumulation of 6 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 April 30, 2015. Jason R. Lichtenstein, by Power of Attorney 2015-05-29