SEC Filing | White Mountains Insurance Group

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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 JUNE 30, 2002. -------------- 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: 28 Gates Street White River Junction, Vermont 05001-7066 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 therein 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: Chief Accounting Officer Phone: (802) 295-4500 Signature, Place, and Date of Signing: /s/ J. BRIAN PALMER WHITE RIVER JUNCTION, VERMONT AUGUST 14, 2002 - ------------------------------------------------- -------------------------------------- ---------------------------------- [Signature] [City, State] [Date] Report Type (Check only one): [X] 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).) [ ] 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: Form 13F File Number Name None

FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 3 ------------------ Form 13F Information Table Entry Total: 80 ITEMS ------------------ Form 13F Information Table Value Total: $303,533,355 ------------------ List of Other Included Managers: Provide a numbered list of the names and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report. No. Form 13F File Number Name 1. 028-07388 FOLKSAMERICA HOLDING COMPANY, INC. --------- ---------------------------------- 2. 028-00470 ONEBEACON ASSET MANAGEMENT, INC. --------- -------------------------------- 3. 028-06739 HIGH RISE CAPITAL MANAGEMENT, L.P. --------- ----------------------------------

WHITE MOUNTAINS INSURANCE GROUP, LTD. FORM 13F INFORMATION TABLE - JUNE 30, 2002 - ----------------------------------------------------------------------------------------------------------------------------------- Title CUSIP Market Amount and Name of Issuer of Class Number Value Type of Security - ----------------------------------------------------------------------------------------------------------------------------------- ANNUITY AND LIFE RE HLDGS ORD G03910109 546,499 30,210 SH BANK OF BERMUDA LTD SHS G07644100 341,129 7,623 SH AETNA INC NEW COM 00817Y108 3,597,750 75,000 SH ALLEGHANY CORP DEL COM 017175100 549,247 2,876 SH AMBAC FINL GROUP INC COM 023139108 883,344 13,145 SH AMERADA HESS CORP COM 023551104 2,062,500 25,000 SH AMERADA HESS CORP COM 023551104 16,500,000 200,000 SH AON CORP COM 037389103 3,913,175 132,740 SH AON CORP COM 037389103 11,792,000 400,000 SH ARDEN RLTY INC COM 039793104 3,086,825 108,500 SH AVALON BAY CMNTYS INC COM 053484101 3,240,980 69,400 SH AVIALL INC NEW COM 05366B102 700,000 50,000 SH BISYS GROUP INC COM 055472104 336,996 10,120 SH BANK HAWAII CORP COM 062540109 445,200 15,900 SH BANK ONE CORP COM 06423A103 5,772,000 150,000 SH BERKLEY WR CORP COM 084423102 324,500 5,900 SH BERKSHIRE HATHAWAY INC DEL CL A 084670108 6,479,600 97 SH BERHSKIRE HATHAWAY INC DEL CL B 084670207 1,166,148 522 SH BERKSHIRE HATHAWAY INC DEL CL B 084670207 4,468,000 2,000 SH BOSTON PROPERTIES INC COM 101121101 1,598,000 40,000 SH COUNTRYWIDE CR INDS INC DEL COM 222372104 579,000 12,000 SH DOW CHEM CO COM 260543103 4,813,200 140,000 SH EL PASO ELEC CO COM NEW 283677854 2,216,000 160,000 SH EQUITY OFFICE PROPERTIES TRU COM 294741103 3,541,054 117,643 SH FAIRMONT HOTELS RESORTS INC COM 305204109 6,960,600 270,000 SH FIDELITY NATL FINL INC COM 316326107 636,108 20,130 SH FIRST DATA CORP COM 319963104 331,080 8,900 SH FIRSTENERGY CORP COM 337932107 18,359,000 550,000 SH FORTUNE BRANDS INC COM 349631101 4,760,000 85,000 SH GABLES RESIDENTIAL TR SH BEN INT 362418105 1,746,571 54,700 SH GREAT LAKES CHEM CORP COM 390568103 662,250 25,000 SH GREAT LAKES CHEM CORP COM 390568103 18,543,000 700,000 SH GULF INDONESIA RES LTD COM 402284103 131,900 10,000 SH GULF INDONESIA RES LTD COM 402284103 1,399,459 106,100 SH HCC INS HLDGS INC COM 404132102 205,530 7,800 SH IHOP CORP COM 449623107 237,367 8,060 SH INTERNATIONAL SPEEDWAY CORP CL A 460335201 238,996 5,960 SH INTERPUBLIC GROUP COS INC COM 460690100 4,704,400 190,000 SH INTUIT COM 461202103 273,460 5,500 SH LAFARGE NORTH AMERICA INC COM 505862102 360,639 10,260 SH LANDAMERICA FINL GROUP INC COM 514936103 283,815 9,010 SH LONGVIEW FIBRE CO COM 543213102 188,400 20,000 SH LONGVIEW FIBRE CO COM 543213102 3,768,000 400,000 SH MACK CALI RLTY CORP COM 554489104 2,636,250 75,000 SH MARATHON OIL CORP COM 565849106 249,504 9,200 SH MARATHON OIL CORP COM 565849106 25,086,000 925,000 SH MATTEL INC COM 577081102 6,007,800 285,000 SH MEREDITH CORP COM 589433101 575,250 15,000 SH MEREDETH CORP COM 589433101 14,381,250 375,000 SH OCTEL CORP COM 675727101 2,661,750 105,000 SH OVERSEAS SHIPPING GROUP I COM 690368105 1,686,400 80,000 SH PAULA FINL DEL COM 703588103 368,629 423,712 SH PEOPLES BRIDGEPORT CONN COM 710198102 261,100 10,000 SH PEOPLES BRIDGEPORT CONN COM 710198102 10,444,000 400,000 SH POST PPTYS INC COM 737464107 524,422 17,388 SH POTLATCH CORP COM 737628107 680,400 20,000 SH POTLATCH CORP COM 737628107 8,334,900 245,000 SH PROLOGIS TR SH BEN INT 743410102 4,273,646 164,371 SH PRUDENTIAL FINL INC COM 744320102 637,176 19,100 SH PUBLIC STORAGE INC COM 74460D109 857,900 23,124 SH PURE RES INC COM 74622E102 1,560,000 75,000 SH RH DONNELLEY CORP COM NEW 74955W307 317,180 11,340 SH RECKSON ASSOCS RLTY CORP COM 75621K106 4,840,560 194,400 SH RYDER SYS INC COM 783549108 1,354,500 50,000 SH RYDER SYS INC COM 783549108 13,049,253 481,700 SH SAFEWAY INC COM NEW 786514208 4,086,600 140,000 SH SHURGARD STORAGE CTRS INC COM 82567D104 5,942,826 171,263 SH STANLEY WKS COM 854616109 5,331,300 130,000 SH SUMMIT PPTYS INC COM 866239106 4,037,215 172,900 SH TJX COS INC NEW COM 872540109 784,400 40,000 SH TAUBMAN CTRS INC COM 876664103 960,750 63,000 SH UICI COM 902737105 606,808 30,040 SH UNISOURCE ENERGY CORP COM 909205106 2,382,660 128,100 SH UNISOURCE ENERGY CORP COM 909205106 23,250,000 1,250,000 SH UNITED PARCEL SERVICE INC CL B 911312106 4,013,750 65,000 SH UNITED TECHNOLOGIES CORP COM 913017109 4,413,500 65,000 SH VORNADO RLTY TR SH BEN INT 929042109 2,360,358 51,090 SH WACHOVIA CORP 2ND NEW COM 929903102 522,684 13,690 SH WADDELL & REED FINL INC CL A 930059100 381,160 16,630 SH WASHINGTON MUT INC COM 939322103 927,750 25,000 SH ------------------------ $303,533,355 ======================== - --------------------------------------------------------------------------------------------------------------------------------- Investment Voting Authority (Shares) Name of Issuer Discretion Managers* Sole Shared None - --------------------------------------------------------------------------------------------------------------------------------- ANNUITY AND LIFE RE HLDGS DEFINED 1,4 30,210 BANK OF BERMUDA LTD DEFINED 1,4 7,623 AETNA INC NEW DEFINED 2,4 75,000 ALLEGHANY CORP DEL DEFINED 1,4 2,876 AMBAC FINL GROUP INC DEFINED 1,4 13,145 AMERADA HESS CORP DEFINED 1,4 25,000 AMERADA HESS CORP DEFINED 2,4 200,000 AON CORP DEFINED 1,4 132,740 AON CORP DEFINED 2,4 400,000 ARDEN RLTY INC DEFINED 1,3,4 108,500 AVALON BAY CMNTYS INC DEFINED 1,3,4 69,400 AVIALL INC NEW DEFINED 2,4 50,000 BISYS GROUP INC DEFINED 1,4 10,120 BANK HAWAII CORP DEFINED 1,4 15,900 BANK ONE CORP DEFINED 2,4 150,000 BERKLEY WR CORP DEFINED 1,4 5,900 BERKSHIRE HATHAWAY INC DEL DEFINED 2,4 97 BERHSKIRE HATHAWAY INC DEL DEFINED 1,4 522 BERKSHIRE HATHAWAY INC DEL DEFINED 2,4 2,000 BOSTON PROPERTIES INC DEFINED 1,3,4 40,000 COUNTRYWIDE CR INDS INC DEL DEFINED 1,4 12,000 DOW CHEM CO DEFINED 2,4 140,000 EL PASO ELEC CO DEFINED 2,4 160,000 EQUITY OFFICE PROPERTIES TRU DEFINED 1,3,4 117,643 FAIRMONT HOTELS RESORTS INC DEFINED 2,4 270,000 FIDELITY NATL FINL INC DEFINED 1,4 20,130 FIRST DATA CORP DEFINED 1,4 8,900 FIRSTENERGY CORP DEFINED 2,4 550,000 FORTUNE BRANDS INC DEFINED 2,4 85,000 GABLES RESIDENTIAL TR DEFINED 1,3,4 54,700 GREAT LAKES CHEM CORP DEFINED 1,4 25,000 GREAT LAKES CHEM CORP DEFINED 2,4 700,000 GULF INDONESIA RES LTD DEFINED 1,4 10,000 GULF INDONESIA RES LTD DEFINED 2,4 106,100 HCC INS HLDGS INC DEFINED 1,4 7,800 IHOP CORP DEFINED 1,4 8,060 INTERNATIONAL SPEEDWAY CORP DEFINED 1,4 5,960 INTERPUBLIC GROUP COS INC DEFINED 2,4 190,000 INTUIT DEFINED 1,4 5,500 LAFARGE NORTH AMERICA INC DEFINED 1,4 10,260 LANDAMERICA FINL GROUP INC DEFINED 1,4 9,010 LONGVIEW FIBRE CO DEFINED 1,4 20,000 LONGVIEW FIBRE CO DEFINED 2,4 400,000 MACK CALI RLTY CORP DEFINED 1,3,4 75,000 MARATHON OIL CORP DEFINED 1,4 9,200 MARATHON OIL CORP DEFINED 2,4 925,000 MATTEL INC DEFINED 2,4 285,000 MEREDITH CORP DEFINED 1,4 15,000 MEREDETH CORP DEFINED 2,4 375,000 OCTEL CORP DEFINED 2,4 105,000 OVERSEAS SHIPPING GROUP I DEFINED 2,4 80,000 PAULA FINL DEL DEFINED 2,4 423,712 PEOPLES BRIDGEPORT CONN DEFINED 1,4 10,000 PEOPLES BRIDGEPORT CONN DEFINED 2,4 400,000 POST PPTYS INC DEFINED 1,3,4 17,388 POTLATCH CORP DEFINED 1,4 20,000 POTLATCH CORP DEFINED 2,4 245,000 PROLOGIS TR DEFINED 1,3,4 164,371 PRUDENTIAL FINL INC DEFINED 1,4 19,100 PUBLIC STORAGE INC DEFINED 1,3,4 23,124 PURE RES INC DEFINED 2,4 75,000 RH DONNELLEY CORP DEFINED 1,4 11,340 RECKSON ASSOCS RLTY CORP DEFINED 1,3,4 194,400 RYDER SYS INC DEFINED 1,4 50,000 RYDER SYS INC DEFINED 2,4 481,700 SAFEWAY INC DEFINED 2,4 140,000 SHURGARD STORAGE CTRS INC DEFINED 1,3,4 171,263 STANLEY WKS DEFINED 2,4 130,000 SUMMIT PPTYS INC DEFINED 1,3,4 172,900 TJX COS INC NEW DEFINED 2,4 40,000 TAUBMAN CTRS INC DEFINED 1,3,4 63,000 UICI DEFINED 1,4 30,040 UNISOURCE ENERGY CORP DEFINED 1,4 128,100 UNISOURCE ENERGY CORP DEFINED 2,4 1,250,000 UNITED PARCEL SERVICE INC DEFINED 2,4 65,000 UNITED TECHNOLOGIES CORP DEFINED 2,4 65,000 VORNADO RLTY TR DEFINED 1,3,4 51,090 WACHOVIA CORP 2ND NEW DEFINED 1,4 13,690 WADDELL & REED FINL INC DEFINED 1,4 16,630 WASHINGTON MUT INC DEFINED 2,4 25,000 * 1 = Folksamerica Holding Company, Inc. (Form 13F filed separately) 2 = OneBeacon Asset Management Inc. (Form 13F filed separately) 3 = High Rise Capital Management, L.P. (Form 13F filed separately) 4 = White Mountains Insurance Group, Ltd.