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WHITE MOUNTAINS INSURANCE GROUP LTD

For the period ended Dec 31, 2023. Filed Feb 26, 2024.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2023 · Filed Feb 26, 2024

WTM$2,280.00+1.1%Stored close · as of Nov 10, 2026

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Contents

ITEM 15. Exhibits and Financial Statement Schedules

a. Documents Filed as Part of the Report

The financial statements and financial statement schedules and reports of independent auditors have been filed as part of this Annual Report on Form 10-K as indicated in the Index to Consolidated Financial Statements and Financial Statement Schedules appearing on page 103 of this report. A listing of exhibits filed as part of the report appear below through page 101 of this report.

b. Exhibits

ExhibitNumberName
2.1Plan of Reorganization (incorporated by reference herein to the Company’s Registration Statement on S-4 (No. 333-87649) dated September 23, 1999)
3.1Memorandum of Continuance of the Company (incorporated by reference herein to Exhibit (3)(i) of the Company’s Current Report on Form 8-K dated November 1, 1999)
3.2Amended and Restated Bye-Laws of the Company (incorporated by reference herein to Exhibit 3 of the Company’s Report on Form 10-Q dated May 2, 2017)
4Description of White Mountains Common Shares (*)
10.1White Mountains Long-Term Incentive Plan, as amended (incorporated by reference herein to Appendix A of the Company’s Notice of 2019 Annual General Meeting of Members and Proxy Statement dated April 8, 2019)
10.2Regulation 114 Trust Agreement by and among Build America Mutual Assurance Company, HG Re Ltd. and The Bank of New York Mellon, dated as of July 20, 2012 (incorporated by reference herein to Exhibit 10.2 of the Company’s Report on Form 10-Q dated October 30, 2012)
10.3Third Amended and Restated Surplus Note Purchase Agreement between Build America Mutual Assurance Company, as Issuer and HG Holdings Ltd. and HG Re Ltd. as Purchasers, dated January 15, 2020 (incorporated by reference herein to Exhibit 10.1 of the Company’s Report on Form 10-Q dated August 7, 2023)
10.4Third Amended and Restated Supplemental Trust Agreement by and among Build America Mutual Assurance Company, HG Re Ltd. and The Bank of New York Mellon, dated January 15, 2020 (incorporated by reference herein to Exhibit 10.2 of the Company’s Report on Form 10-Q dated August 7, 2023)
10.5White Mountains Bonus Plan (incorporated by reference herein to Exhibit 10.1 of the Company’s Report on Form 10-Q dated May 6, 2022)
10.6Loan and Servicing Agreement dated as of March 23, 2021 among Kudu Investment Management, LLC, Kudu Investment Holdings, LLC, Kudu Investments US, LLC, KFO Holdings, Ltd., KWCP Holdings UK, Ltd., Massachusetts Mutual Life Insurance Company and Alter Domus (incorporated by reference herein to Exhibit 10.1 of the Company’s Report on Form 10-Q dated November 8, 2021) (**)
10.7First Amendment to Loan and Servicing Agreement dated as of June 28, 2023 among Kudu Investment Management, LLC, Kudu Investment Holdings, LLC, Kudu Investments US, LLC, KFO Holdings, Ltd., KWCP Holdings UK, Ltd., Massachusetts Mutual Life Insurance Company and Alter Domus (incorporated by reference herein to Exhibit 10.3 of the Company’s Report on Form 10-Q dated August 7, 2023) (**)
10.8Paying Agency Agreement dated 13 July 2021 between Group Ark Insurance Limited, The Bank of New York Mellon, London Branch and The Bank of New York Mellon SA/NV, Dublin Branch (incorporated by reference herein to Exhibit 10.2 of the Company’s Report on Form 10-Q dated November 8, 2021) (**)
10.9Paying Agency Agreement dated 11 August 2021 between Group Ark Insurance Limited, The Bank of New York Mellon, London Branch and The Bank of New York Mellon SA/NV, Dublin Branch (incorporated by reference herein to Exhibit 10.3 of the Company’s Report on Form 10-Q dated November 8, 2021) (**)
ExhibitNumberName
10.10Paying Agency Agreement dated 8 September 2021 between Group Ark Insurance Limited, The Bank of New York Mellon, London Branch and The Bank of New York Mellon SA/NV, Dublin Branch (incorporated by reference herein to Exhibit 10.4 of the Company’s Report on Form 10-Q dated November 8, 2021) (**)
10.11Offer Letter, dated as of November 29, 2021, between the Company and Liam Caffrey (incorporated by reference herein to Exhibit 10.1 of the Company’s Current Report on Form 8-K dated November 29, 2021)
10.12Loan and Security Agreement, dated as of March 31, 2022 among HG Global Ltd., Hudson Structured Capital Management Ltd. and the lenders from time to time party thereto (incorporated by reference herein to Exhibit 10.2 of the Company’s Report on Form 10-Q dated May 6, 2022) (**)
10.13Agreement and Plan of Merger by and among PM Holdings LLC, WM Pierce Merger Sub LLC, White Mountains Insurance Group, LTD., Bamboo Ide8 Insurance Services LLC and John Chu, as the Unitholders’ Representative, dated as of October 19, 2023 (incorporated by reference herein to Exhibit 10.1 of the Company’s Report on Form 10-Q dated November 6, 2023)
14The Company’s Code of Business Conduct, which applies to all directors, officers and employees in carrying out their responsibilities to and on behalf of the Company (incorporated by reference herein to Exhibit 14 of the Company’s 2015 Annual Report on Form 10-K)
21Subsidiaries of the Registrant (*)
23.1Consent of PricewaterhouseCoopers, LLP (*)
23.2Consent of PricewaterhouseCoopers, LLP for MediaAlpha, Inc. (*)
24Powers of Attorney (*)
31.1Principal Executive Officer Certification Pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934 (*)
31.2Principal Financial Officer Certification Pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934 (*)
32.1Principal Executive Officer Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (*)
32.2Principal Financial Officer Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (*)
97.1White Mountains Insurance Group, Ltd. Recovery Policy (*)
99.1MediaAlpha, Inc.’s Consolidated Financial Statements as of December 31, 2023 and 2022 and for the three years in the period ended December 31, 2023 (incorporated by reference herein from Item 8 of MediaAlpha, Inc.’s 2023 Annual Report on Form 10-K dated February 22, 2024, Commission file number: 001-39671) (***)
101XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.

(*) Included herein.

(**) Portions of this exhibit are redacted pursuant to Item 601(b)(10)(iv) of Regulation S-K.

(***) Exhibit 99.1 to this Annual Report on Form 10-K is being filed to provide audited financial statements and the related footnotes as of December 31, 2023 and 2022 and for the three years in the period ended December 31, 2023. The management of MediaAlpha is solely responsible for the form and content of the MediaAlpha financial statements. White Mountains has no responsibility for the form or content of the MediaAlpha financial statements since it does not control MediaAlpha.

c. Financial Statement Schedules and Separate Financial Statements of Subsidiaries Not Consolidated and Fifty Percent or Less Owned Persons

The financial statement schedules and report of independent registered public accounting firm have been filed as part of this Annual Report on Form 10-K as indicated in the Index to Consolidated Financial Statements and Financial Statement Schedules appearing on page 103 of this report.

White Mountains is required to file the financial statements and the related footnotes of MediaAlpha in accordance with SEC Rule 3-09 of Regulation S-X.

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