0001047469-12-000908.txt : 20120213 0001047469-12-000908.hdr.sgml : 20120213 20120213164329 ACCESSION NUMBER: 0001047469-12-000908 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20111231 FILED AS OF DATE: 20120213 DATE AS OF CHANGE: 20120213 EFFECTIVENESS DATE: 20120213 FILER: COMPANY DATA: COMPANY CONFORMED NAME: WHITE MOUNTAINS INSURANCE GROUP LTD CENTRAL INDEX KEY: 0000776867 STANDARD INDUSTRIAL CLASSIFICATION: FIRE, MARINE & CASUALTY INSURANCE [6331] IRS NUMBER: 942708455 STATE OF INCORPORATION: D0 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-01681 FILM NUMBER: 12599750 BUSINESS ADDRESS: STREET 1: 80 SOUTH MAIN ST CITY: HANOVER STATE: NH ZIP: 03755 BUSINESS PHONE: 603 640 2200 MAIL ADDRESS: STREET 1: 80 SOUTH MAIN STREET CITY: HANOVER STATE: NH ZIP: 03755 FORMER COMPANY: FORMER CONFORMED NAME: WHITE MOUNTAINS INSURANCE GROUP INC DATE OF NAME CHANGE: 19990603 FORMER COMPANY: FORMER CONFORMED NAME: FUND AMERICAN ENTERPRISES HOLDINGS INC DATE OF NAME CHANGE: 19920703 FORMER COMPANY: FORMER CONFORMED NAME: FUND AMERICAN COMPANIES INC DATE OF NAME CHANGE: 19920701 13F-HR 1 a2207314z13f-hr.txt 13F-HR UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 13F FORM 13F COVER PAGE INFORMATION REQUIRED OF INSTITUTIONAL INVESTMENT MANAGERS PURSUANT TO SECTION 13(f) OF THE SECURITIES EXCHANGE ACT OF 1934 AND RULES THEREUNDER Report for the Calendar Year or Quarter Ended: December 31, 2011. ----------------------- Check Here if Amendment / /; Amendment Number: --------- This Amendment (Check only one.): / / is a restatement. / / adds new holdings entries. Institutional Investment Manager Filing this Report: Name: White Mountains Insurance Group, Ltd. ------------------------------------- Address of Principal Executive Office: 80 South Main Street ------------------------------------- Hanover, New Hampshire 03755-2053 ------------------------------------- U.S.A. ------------------------------------- Form 13F File Number: 028-01681 --------------------- The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: J. Brian Palmer ------------------------------------------- Title: Vice President and Chief Accounting Officer ------------------------------------------- Phone: (603) 640-2200 ------------------------------------------- Signature, Place, and Date of Signing: /s/ J. Brian Palmer Boston, Massachusetts February 13, 2012 ------------------------------- --------------------- ----------------- [Signature] [City, State] [Date] Report Type (Check only one.): / / 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) / / 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) /X/ 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).) List of Other Managers Reporting for this Manager: No. Form 13F File Number Name 1. 028-12951 OneBeacon Insurance Group, Ltd. --------------- ------------------------------------ 2. 028-10494 White Mountains Advisors LLC --------------- ------------------------------------ FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 0 ------------ Form 13F Information Table Entry Total: 2 ------------ Form 13F Information Table Value Total: $ 158,192 ------------ (thousands) FORM 13F INFORMATION TABLE WHITE MOUNTAINS INSURANCE GROUP, LTD.

COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 ------------------------------------------------------------------------------------------------------------------------------------ VOTING AUTHORITY VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER --------------------------- NAME OF ISSUER TITLE OF CLASS CUSIP (x1,000) PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE ------------------------------------------------------------------------------------------------------------------------------------ SIEMENS AG SPONSORED ADR 826197501 $ 374 3,900 SH SOLE N/A 3,900 SYMETRA FINL CORP [1] COM 87151Q106 157,818 17,400,000 SH SOLE N/A 17,400,000

[1] The 17,400,000 shares of Symetra Financial Corp. over which the Reporting Person has investment discretion have previously been disclosed in the Reporting Person's periodic, quarterly, and annual reports as required under the Securities Exchange Act of 1934 (including Forms 10-Q, 10-K and Section 16 and 13G filings) and are reflected in the Reporting Person's Form 13F filing for the first time.