0000776867us-gaap:ShortDurationInsuranceContractsAccidentYear2017Memberwtm:CasualtyMember2019-12-310000776867wtm:ArkInsuranceHoldingsLimitedWMOutriggerReSegmentMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Memberwtm:CasualtyActiveMember2015-12-31

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549
FORM 10-K
 
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 20212023
OR
 
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from          to          
Commission file number 1-8993
WHITE MOUNTAINS INSURANCE GROUP, LTD.
(Exact name of Registrant as specified in its charter)
Bermuda 94-2708455
(State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)
23 South Main Street, Suite 3B  
Hanover, 03755-2053
New Hampshire(Zip Code)
(Address of principal executive offices) 
Registrant’s telephone number, including area code: (603) 640-2200
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s) Name of each exchange on which registered
Common Shares, par value $1.00 per shareWTM New York Stock Exchange
per shareWTM.BH Bermuda Stock Exchange
Securities registered pursuant to Section 12(g) of the Act: None
Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ý No o
Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes o No ý
Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý No o
 
Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit such files). Yes  ý No o
Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filerýAccelerated filer oNon-accelerated filer o
Smaller reporting company Emerging growth company 
If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ý

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements.
o
Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). o
Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes  No ý
The aggregate market value of voting shares (based on the closing price of those shares listed on the New York Stock Exchange and the consideration received for those shares not listed on a national or regional exchange) held by non-affiliates of the Registrant as of June 30, 2021,2023, was $3,482,682,176.
$3,443,635,676.
As of February 23, 2022, 3,000,84921, 2024, 2,555,183 common shares, par value of $1.00 per share, were outstanding (which includes 25,12524,120 restricted common shares that were not vested at such date). 
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the Registrant’s Definitive Proxy Statement to be filed with the Securities and Exchange Commission (“SEC”) pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), relating to the Registrant’s Annual General Meeting of Members scheduled to be held May 26, 202223, 2024 are incorporated by reference into Part III of this Form 10-K. With the exception of the portions of the Proxy Statement specifically incorporated herein by reference, the Proxy Statement is not deemed to be filed as part of this Form 10-K.



TABLE OF CONTENTS

 
 
Ark/WM Outrigger
 
 
 
 
Cybersecurity
 
 
 
 
 
 CERTIFICATIONSC-1




PART I

Item 1.  Business

GENERAL
 
White Mountains Insurance Group, Ltd. (the “Company” or the “Registrant”) is an exempted Bermuda limited liability company whose principal businesses are conducted through its subsidiaries and affiliates. Within this report, the term “White Mountains” is used to refer to one or more entities within the consolidated organization, as the context requires. The Company’s headquarters is located at 26 Reid Street, Hamilton, Bermuda HM 11, its principal executive office is located at 23 South Main Street, Suite 3B, Hanover, New Hampshire 03755-2053 and its registered office is located at Clarendon House, 2 Church Street, Hamilton, Bermuda HM 11. The Company’s website is located at www.whitemountains.com. The information contained on White Mountains’s website is not incorporated by reference into, and is not a part of, this report.
White Mountains is engaged in the business of making opportunistic and value-oriented acquisitions of businesses and assets in the insurance, financial services and related sectors, operating these businesses and assets through its subsidiaries and, if and when attractive exit valuations become available, disposing of these businesses and assets.
As of December 31, 2021,2023, White Mountains conducted its business primarily in fivefour areas: municipal bond insurance, property and casualty insurance and reinsurance, specialty insurance distribution, capital solutions for asset and wealth management firms and other operations. White Mountains’s municipal bond insurance business is conducted through its subsidiary HG Global Ltd. and its reinsurance subsidiary HG Re Ltd. (“HG Re”), (collectively, “HG Global”). HG Global was established to fund the startup of and provide reinsurance, through HG Re, to Build America Mutual Assurance Company (“BAM”), a mutual municipal bond insurance company.company (collectively, “HG Global/BAM”). White Mountains’s property and casualty insurance and reinsurance business is conducted through its subsidiary Ark Insurance Holdings Limited and its subsidiaries (collectively, “Ark”). White Mountains’s specialty insurance distribution business is conducted through its subsidiary NSM Insurance HoldCo, LLC and its subsidiariesOutrigger Re Ltd. Segregated Account 2023-1 (“WM Outrigger Re”) (collectively “NSM”with Ark, “Ark/WM Outrigger”). White Mountains provides capital solutions for asset and wealth management firms through its subsidiary Kudu Investment Management, LLC and its subsidiaries (collectively, “Kudu”).
White Mountains’s other operations consistconsists of the Company and its wholly-owned subsidiary, White Mountains Capital, LLC (“WM Capital”), its other intermediate holding companies, its wholly-owned investment management subsidiary, White Mountains Advisors LLC (“WM Advisors”), investment assets managed by WM Advisors, its interests in MediaAlpha, Inc. (“MediaAlpha”), PassportCard Limited (“PassportCard”) and DavidShield Life Insurance Agency (2000) Ltd. (“DavidShield”) (collectively, “PassportCard/DavidShield”), Elementum Holdings LP (“Elementum”), certain other consolidated and unconsolidated entities and certain other assets.assets (“Other Operations”). As of December 31, 2021,2023, White Mountains’s reportable segments were HG Global/BAM, Ark, NSM,Ark/WM Outrigger and Kudu with its remaining operating businesses, holding companies and other assets included in Other Operations.
On October 25, 2023, White Mountains announced the launch of White Mountains Partners LLC (“WTM Partners”), which will acquire businesses in non-insurance, non-financial services sectors including essential services, light industrial and specialty consumer. White Mountains expects to deploy up to $500 million of equity capital through WTM Partners over time. WTM Partners is included within Other Operations.
On January 2, 2024, White Mountains acquired a controlling interest in Bamboo Ide8 Insurance Services LLC (“Bamboo MGA”) and its wholly-owned insurance subsidiary, Ide8 Limited (“Bamboo Captive”), through PM Holdings LLC (“Bamboo Holdings”) (collectively with Bamboo MGA and Bamboo Captive, “Bamboo”). Bamboo is a capital-light, tech- and data-enabled insurance distribution business providing homeowners’ insurance and related products to the residential property market in California. Bamboo operates primarily through Bamboo MGA, its full-service managing general agent (“MGA”) business. Bamboo will be consolidated and is expected to be presented as a reportable segment for periods after December 31, 2023. See “Bamboo Transaction” on page 18.

HG GLOBAL/BAM

Overview

The HG Global/BAM segment consists of the consolidated results of HG Global, HG Re and BAM. BAM is the first and only mutual municipal bond insurance company in the United States. By insuring the timely payment of principal and interest on municipal bonds, BAM provides market access to, and lowers interest expense for, issuers of municipal bonds used to finance essential public purpose projects. BAM is domiciled in New York and is owned by and operated for the benefit of its policyholders, the municipalities that purchase BAM’s insurance for their debt issuances. Generally accepted accounting principles in the United States (“GAAP”) require White Mountains to consolidate BAM’s results in its financial statements, which are attributed to non-controllingnoncontrolling interests. BAM reports on a statutory accounting basis to the New York State Department of Financial Services (“NYDFS”) and does not report stand-alone GAAP financial results.
1


HG Global was established to fund the startup of BAM and, through HG Re, to provide up to 15%-of-par, first loss reinsurance protection for policies underwritten by BAM. HG Global and HG Re are domiciled in Bermuda. At inception in 2012, HG Global was capitalized with $609 million. HG Global, together with its subsidiaries, funded the initial capitalization of BAM through the purchase of $503 million of surplus notes issued by BAM (the “BAM Surplus Notes”). See “CRITICAL ACCOUNTING ESTIMATES — Surplus Notes Valuation — BAM Surplus Notes” on page 7978 for a discussion on the accounting and risks associated with the BAM Surplus Notes. BAM launched in July 2012 after securing its “AA/stable” rating from Standard & Poor’s Financial Services LLC (“Standard & Poor’s”). In June 2021,July 2023, Standard & Poor’s affirmed BAM’s “AA/stable” rating. “AA” is the third highest of 23 financial strength ratings assigned by Standard & Poor’s.
BAM charges an insurance premium on each municipal bond insurance policy it underwrites. A portion of the premium is a member’s surplus contribution (“MSC”) and the remainder is a risk premium. In the event of a municipal bond refunding, a portion of the MSC from original issuance can be reutilized, in effect serving as a credit against the total insurance premium on the refunding of the municipal bond. Issuers of debt insured by BAM are members of BAM so long as any of their BAM-insured debt is outstanding. As members, they have certain interests in BAM, including the right to vote for BAM’s directors and to receive dividends, if declared.
1


BAM focuses on municipal bonds issued to finance essential public purpose projects, such as schools, utilities and transportation facilities. BAM focuses on small-to-medium sized investment grade municipal bonds, primarily in the AA, A and BBB categories. BAM seeks to build a relatively low risk insurance portfolio with prudent single risk limits. White Mountains believes that municipal bonds insured by BAM have strong appeal to retail investors, who buy smaller, less liquid issues, have less portfolio diversification and have fewer credit differentiation skills and analytical resources than institutional investors.
BAM is exposed to climate-related events to the extent that those events impact a municipal issuer’s ability to service its debt obligations. BAM incorporates climate change risk in its credit underwriting process. In doing so, BAM considers both the short-term economic impact from climate change-related severe weather events (including flooding, wildfires, and drought) as well as longer-term impacts on population and property values from rising sea levels and changing temperature patterns.
As of December 31, 20212023 and 2020,2022, White Mountains reported $1,084$1,221 million and $1,061$1,125 million of total assets and $446$376 million and $486$364 million of total equity related to HG Global. As of December 31, 20212023 and 2020,2022, White Mountains owned 96.9% of HG Global’s preferred equity and 88.4% of its common equity. As of December 31, 20212023 and 2020,2022, White Mountains reported $9$1 million and $14$(1) million of non-controllingnoncontrolling interests related to HG Global.
As of December 31, 20212023 and 2020,2022, White Mountains reported $550$530 million and $560$507 million of total assets and $(124)$(140) million and $(123)$(155) million of non-controllingnoncontrolling interests related to BAM.

Reinsurance Treaties

FLRT
BAM is a party to a first loss reinsurance treaty (“FLRT”) with HG Re under which HG Re provides first loss protection up to 15%-of-par outstanding on each municipal bond insured by BAM. For capital appreciation bonds, par is adjusted to the estimated equivalent par value for current interest paying bonds. In return, BAM cedes up toapproximately 60% of the risk premium charged for insuring the municipal bond, which is net of a ceding commission.
The FLRT is a perpetual agreement with terms that can be renegotiated after a specified period of time. During 2021, BAM and HG Re agreed that the terms may be renegotiated at the end of 2024, and each subsequent five-year period thereafter.
If the parties are unable to mutually agree to amended terms, the dispute is resolved through arbitration, according to certain principles agreed to by the parties. Amended contract terms must be approved by the NYDFS. Should BAM consider the amended terms unacceptable, it has the option to purchase HG Re or cause another reinsurer to purchase HG Re, at fair value.
Pursuant to the FLRT, BAM’s underwriting guidelines may only be amended with the consent of HG Re. In addition, HG Holdings Ltd, a subsidiary of HG Global, has the right to designate two directors for election to BAM’s board of directors.

Fidus Re
BAM is party to a collateralized excess of loss reinsurance agreement that serves to increase BAM’s claims paying resources and is provided by Fidus Re, Ltd. (“Fidus Re”), a Bermuda based special purpose insurer created in 2018 solely to provide reinsurance protection to BAM.
In the second quarter of 2018, Fidus Re was initially capitalized byin 2018 via the issuance of $100 million of insurance linked securities (the “Fidus Re 2018 Agreement”). The proceeds from issuance were placed in a collateral trust supporting Fidus Re’s obligations to BAM. The insurance linked securities were issued with an initial term of 12 years and are callable five years after the date of issuance. Under the Fidus Re 2018 Agreement, Fidus Re reinsures 90% of aggregate losses exceeding $165 million on a portion of BAM’s financial guarantee portfolio (the “2018 Covered Portfolio”) up to a total reimbursement of $100 million. The Fidus Re 2018 Agreement does not provide coverage for losses in excess of $276 million. The 2018 Covered Portfolio consists of approximately 33%23% of BAM’s portfoliogross par outstanding as of financial guaranty policies issued through December 31, 2021.2023.
2


In the first quarter of 2021, Fidus Re issued an additional $150 million of insurance linked securities (the “Fidus Re 2021 Agreement”) with, which have an initial term of 12 years and are callable five years after the date of issuance. The proceeds from issuance were placed in a collateral trust supporting Fidus Re’s obligations to BAM. Under the Fidus Re 2021 Agreement, Fidus Re reinsures 90% of aggregate losses exceeding $135 million on a portion of BAM’s financial guarantee portfolio (the “2021 Covered Portfolio”) up to a total reimbursement of $150 million. The Fidus Re 2021 Agreement does not provide coverage for losses in excess of $302 million. The 2021 Covered Portfolio consists of approximately 38%27% of BAM’s portfoliogross par outstanding as of financial guaranty policies issued through December 31, 2021.2023.
In 2022, Fidus Re issued an additional $150 million of insurance linked securities (the “Fidus Re 2022 Agreement”), which have an initial term of 12 years and are callable seven years after the date of issuance. The proceeds from issuance were placed in a collateral trust supporting Fidus Re’s obligations to BAM. Under the Fidus Re 2022 Agreement, Fidus Re reinsures 90% of aggregate losses exceeding $110 million on a portion of BAM’s financial guarantee portfolio (the “2022 Covered Portfolio”) up to a total reimbursement of $150 million. The Fidus Re 2022 Agreement does not provide coverage for losses in excess of $277 million. The 2022 Covered Portfolio consists of approximately 29% of BAM’s gross par outstanding as of December 31, 2023.

2


XOLT
In January 2020, BAM entered into an excess of loss reinsurance agreement (the “XOLT”) with HG Re. Under the XOLT, HG Re provides last dollar protection for exposures on municipal bonds insured by BAM in excess of NYDFS single issuer limits. The XOLT is subject to an aggregate limit equal to the lesser of $75$125 million or the assets held in the Supplemental Trust at any point in time. At inception, BAM ceded exposure on one covered risk to HG Re under the XOLT. Additional cessionsCessions under the XOLT are subject to approval by HG Re. As of December 31, 2021,2023, BAM had ceded $11$465 million of exposure to HG Re under the XOLT.

Collateral Trusts

HG Re’s obligations under the FLRT are limitedsubject to an aggregate limit equal to the assets in two collateral trusts: a Regulation 114 Trust and a supplemental collateral trust (the “Supplemental Trust” and, together with the Regulation 114 Trust, the “Collateral Trusts”). Losses required to be reimbursed under the FLRT are subject to an aggregate limit equal to the assets held in the Collateral Trusts at any point in time.
On a monthly basis, BAM deposits cash equal to ceded premiums, net of ceding commissions, due to HG Re under the FLRT directly into the Regulation 114 Trust. The Regulation 114 Trust target balance is equal to gross cededHG Re’s unearned premiums and unpaid ceded loss and loss adjustment expensesexpense (“LAE”), reserves, if any. If, at the end of any quarter, the Regulation 114 Trust balance is below the target balance, funds will be withdrawn from the Supplemental Trust and deposited into the Regulation 114 Trust in an amount equal to the shortfall. If, at the end of any quarter, the Regulation 114 Trust balance is above 102% of the target balance, funds will be withdrawn from the Regulation 114 Trust and deposited into the Supplemental Trust. The Regulation 114 Trust balance as of December 31, 20212023 and 20202022 was $250$342 million and $223$289 million.
The Supplemental Trust target balance is $603 million, less the amount of cash and securities in the Regulation 114 Trust in excess of its target balance (the “Supplemental Trust Target Balance”). If, at the end of any quarter, the Supplemental Trust balance exceeds the Supplemental Trust Target Balance, such excess may be distributed to HG Re. The distribution will be made first as an assignment of accrued interest on the BAM Surplus Notes and second in cash and/or fixed income securities. As the BAM Surplus Notes are repaid over time, the BAM Surplus Notes will be replaced in the Supplemental Trust by cash and fixed income securities. The Supplemental Trust balance as of December 31, 20212023 and 20202022 was $602$607 million and $604$568 million, which included $231$247 million and $212$214 million of cash, investments and investments, $365accrued investment income, $322 million and $388$340 million of BAM Surplus Notes and $6$38 million and $4$14 million of interest receivable on the BAM Surplus Notes.
If, at any point in time, the sum of the Regulation 114 Trust balance and the Supplemental Trust balance equals zero, BAM may choose to terminate the FLRT on a runoff basis. However, HG Re can elect to continue the FLRT by depositing into the Regulation 114 Trust assets with a fair market value not less than the greater of (i) $100 million or (ii) 10% of the then Regulation 114 Trust target balance.
As of December 31, 20212023 and 2020,2022, the Collateral Trusts held assets of $852$949 million and $827$857 million, which included $481$589 million and $435$503 million of cash, investments and investments, $365accrued investment income, $322 million and $388$340 million of BAM Surplus Notes and $6$38 million and $4$14 million of interest receivable on the BAM Surplus Notes.
As of December 31, 20212023 and 2020,2022, total interest receivable on the BAM Surplus Notes was $175 million and $158 million, and $156 million.which includes amounts held outside the Collateral Trusts.


3


Competition/Pricing

The municipal bond insurance industry is highly competitive. BAM’s primary competitor is Assured Guaranty Ltd. (“Assured”).
BAM and Assured each seeks to differentiate itself through financial strength ratings, claims paying resources and underwriting strategies. BAM believes it has a number of distinct competitive advantages. BAM’s insured portfolio consists only of essential public purpose U.S. municipal bonds, and it has no exposure to mortgage and asset-backed securities, derivatives, non-U.S. structured or sovereign credits or territorial credits, such as Puerto Rico.  BAM believes that, over time, its mutual structure will deliver a cost of capital advantage relative to its stock company competitors.
BAM seeks to provide transparency with respect to its insured portfolio and each insured issuer. In order to allow issuers and investors in BAM-insured municipal bonds to monitor financial strength first-hand, BAM publishes credit profiles on every insured issuer. Credit profiles are accessible by CUSIP, obligor, state or sector on BAM’s website.
Pricing (i.e., premium level) is affected by a number of factors, including interest rate levels, credit spreads, trading value, and capture rate (i.e., the percentage of total interest savings captured in the form of insurance premium). All other thingselse being equal, pricing is generally higher when interest rates are higher, credit spreads are wider, and BAM’s trading value is higher relative to competitors and the capture rate is higher.
3


Insured Portfolio

The following table presents BAM’s insured portfolio by asset class as of December 31, 20212023 and 2020:2022:
MillionsMillionsDecember 31, 2021December 31, 2020MillionsDecember 31, 2023December 31, 2022
SectorSectorGross Par Outstanding
Average Standard & Poor’s Credit Rating (1)
Gross Par Outstanding
Average Standard & Poor’s Credit Rating (1)
SectorGross Par Outstanding
Weighted Average Standard & Poor’s Credit Rating (1)
Gross Par Outstanding
Weighted Average Standard & Poor’s Credit Rating (1)
General ObligationGeneral Obligation$50,346.4 A$43,500.8 AGeneral Obligation$60,471.7 AA$55,955.0 AA
UtilityUtility11,844.2 A9,252.4 AUtility14,629.0 AA13,583.3 AA
Dedicated TaxDedicated Tax9,740.1 A9,073.4 ADedicated Tax12,040.2 A+A+10,755.0 AA
General FundGeneral Fund7,661.3 A6,418.0 AGeneral Fund8,842.1 A+A+8,218.7 A+A+
Public Higher Education6,291.4 A-4,369.0 A-
Transportation3,313.1 A2,674.1 A
Higher EducationHigher Education7,444.8 A-6,947.5 A-
Enterprise SystemsEnterprise Systems6,245.9 A4,537.4 A
Total insured portfolio Total insured portfolio89,196.5 A75,287.7 ATotal insured portfolio$109,673.7 AA$99,996.9 AA
(1) The weighted average credit ratings are based on Standard & Poor’s credit ratings, or if unrated by Standard & Poor’s, the Standard & Poor’s equivalent of credit ratings provided by Moody’s Investor Service (“Moody’s”).

4


The following tables present BAM’s ten largest direct exposures based upon gross par outstanding as of December 31, 20212023 and 2020:2022:
December 31, 2021
$ in Millions
Gross Par Outstanding (2)
Percent of Total Gross Par Outstanding (2)
Standard & Poor’s Credit Rating (1)
Clark Country SD, NV (Clark County)$387.4 0.4 %A+
City of Chicago, IL (Cook County), Sales Tax - Local376.8 0.4 AA-
New Jersey Transportation Trust Fund Authority, System &
   Program Bonds, NJ, Gas Tax (2)
376.5 0.4 BBB
State of Illinois365.6 0.4 BBB
Metropolitan Transit Authority (MTA), NY, Mass Transit - Farebox (2)
346.9 0.4 BBB+
Pennsylvania Turnpike Commission, PA, Toll Roads341.5 0.4 A
Suffolk Country, NY (Suffolk County)335.2 0.4 A-
Pennsylvania, Commonwealth of (2)
325.6 0.4 BBB-
Oregon State University, OR, Public Higher Education - Gross Revenue320.7 0.4 A
Municipal Authority of Westmoreland County, PA, Water318.6 0.4 A+
Total of top ten exposures$3,494.8 4.0 %
December 31, 2023
$ in Millions
Gross Par Outstanding (2)
Percent of Total Gross Par Outstanding (2)
Standard & Poor’s Credit Rating (1)
Midway Airport, City of Chicago, IL (Cook County), Airport GARBs (2023
   Supplemental Indenture)
$513.5 0.5 %A
City of Chicago, IL (Cook County), Sales Tax - Local477.7 0.4 AA-
South Carolina Public Service Authority441.4 0.4 A-
Pennsylvania Turnpike Commission, PA, Toll Roads438.0 0.4 A+
Chicago Transit Authority, IL435.9 0.4 AA-
New Jersey Transportation Trust Fund Authority, System &
   Program Bonds, NJ, Gas Tax (2)
432.1 0.4 A-
Port Authority of NY and NJ418.5 0.4 AA-
Metropolitan Pier & Exposition Authority, IL (Cook County)395.5 0.4 A
State of Connecticut, CT (Lottery Revenue)380.9 0.3 AA-
Clark County SD, NV (Clark County)376.3 0.3 AA-
Total of top ten exposures$4,309.8 3.9 %
(1) A+AA-” is the fourth highest, “A+” is the fifth highest, “A” is the sixth highest and “A- is the seventh highest, “BBB+” is the eighth highest and “BBB-” is the tenth highest of 23 credit ratings assigned by Standard & Poor’s.
(2) For capital appreciation bonds, the amounts shown equal the estimated equivalent par value had the bonds been current interest paying bonds. 


4


December 31, 2020
December 31, 2022
December 31, 2022
December 31, 2022
$ in Millions$ in Millions
Gross Par Outstanding (2)
Percent of Total Gross Par Outstanding (2)
Standard & Poor’s Credit Rating (1)
$ in Millions
Gross Par Outstanding (2)
Percent of Total Gross Par Outstanding (2)
Standard & Poor’s Credit Rating (1)
Pennsylvania Turnpike Commission, PA, Toll Roads
City of Chicago, IL (Cook County), Sales Tax - LocalCity of Chicago, IL (Cook County), Sales Tax - Local$376.8 0.5 %AA-
City of Chicago, IL (Cook County), Sales Tax - Local
City of Chicago, IL (Cook County), Sales Tax - Local
Clark County SD, NV (Clark County)
Clark County SD, NV (Clark County)
Clark County SD, NV (Clark County)
New Jersey Transportation Trust Fund Authority, System &
Program Bonds, NJ, Gas Tax (2)
New Jersey Transportation Trust Fund Authority, System &
Program Bonds, NJ, Gas Tax (2)
New Jersey Transportation Trust Fund Authority, System &
Program Bonds, NJ, Gas Tax (2)
State of IllinoisState of Illinois376.1 0.5 BBB-
New Jersey Transportation Trust Fund Authority, System &
Program Bonds, NJ, Gas Tax (2)
358.9 0.5 BBB
State of Illinois
State of Illinois
Miami-Dade County School Board (Miami-Dade County)
Miami-Dade County School Board (Miami-Dade County)
Miami-Dade County School Board (Miami-Dade County)
Metropolitan Pier & Exposition Authority, IL (Cook County)
Metropolitan Pier & Exposition Authority, IL (Cook County)
Metropolitan Pier & Exposition Authority, IL (Cook County)
South Carolina Public Service Authority
South Carolina Public Service Authority
South Carolina Public Service Authority
Sacramento City USD, CA (Sacramento County)
Sacramento City USD, CA (Sacramento County)
Sacramento City USD, CA (Sacramento County)
Metropolitan Transit Authority (MTA), NY, Mass Transit - Farebox (2)
Metropolitan Transit Authority (MTA), NY, Mass Transit - Farebox (2)
346.9 0.5 BBB+
Pennsylvania Turnpike Commission, PA, Toll Roads331.0 0.5 A
Oregon State University, OR, Public Higher Education - Gross Revenue320.7 0.4 BBB+
Municipal Authority of Westmoreland County, PA, Water319.1 0.4 A+
Pennsylvania, Commonwealth of306.6 0.4 BBB-
City of Bridgeport, CT (Fairfield County)306.5 0.4 A
Clark Country SD, NV (Clark County)295.4 0.4 A+
Metropolitan Transit Authority (MTA), NY, Mass Transit - Farebox (2)
Metropolitan Transit Authority (MTA), NY, Mass Transit - Farebox (2)
Total of top ten exposuresTotal of top ten exposures$3,338.0 4.5 %
Total of top ten exposures
Total of top ten exposures
(1) A+AA-” is the fourth highest, “A+” is the fifth highest, “A” is the sixth highest, “A- is the seventh highest, “BBB+” is the eighth highest and “BBB-”“BBB” is the tenthninth highest of 23 credit ratings assigned by Standard & Poor’s.
(2) For capital appreciation bonds, the amounts shown equal the estimated equivalent par value had the bonds been current interest paying bonds. 

5


The following table presentstables present the geographic distribution of BAM’s insured portfolio as of December 31, 20212023 and 2020:2022:
December 31, 2021December 31, 2020
December 31, 2023December 31, 2023
$ in Millions$ in MillionsNumber of RisksGross Par OutstandingPercent of Total Gross Par OutstandingNumber of RisksGross Par OutstandingPercent of Total Gross Par Outstanding$ in MillionsNumber of RisksGross Par OutstandingPercent of Total Gross Par Outstanding
CaliforniaCalifornia822 $18,813.3 21.1 %729 $16,155.8 21.5 %California862 $$21,146.0 19.3 19.3 %
TexasTexas934 11,802.6 13.2 839 9,790.5 13.0 
PennsylvaniaPennsylvania575 10,596.1 11.9 489 9,281.8 12.3 
IllinoisIllinois470 8,091.6 9.1 409 7,014.5 9.3 
New YorkNew York386 4,557.6 5.1 346 4,150.2 5.5 
New JerseyNew Jersey184 3,959.9 4.4 169 3,553.5 4.7 
Florida
AlabamaAlabama201 2,865.2 3.2 167 2,311.7 3.1 
OhioOhio187 2,775.5 3.1 159 2,137.5 2.8 
Florida83 2,662.3 3.0 70 1,805.4 2.4 
Louisiana93 1,914.9 2.1 77 1,500.5 2.0 
MichiganMichigan158 1,892.4 2.1 139 1,600.4 2.1 
Arizona82 1,646.8 1.8 69 1,522.5 2.0 
Other StatesOther States1,094 17,618.3 19.9 921 14,463.4 19.3 
Total insured portfolio Total insured portfolio5,269 $89,196.5 100.0 %4,583 $75,287.7 100.0 % Total insured portfolio5,766 $$109,673.7 100.0 100.0 %

December 31, 2022
$ in MillionsNumber of RisksGross Par OutstandingPercent of Total Gross Par Outstanding
California824 $20,055.5 20.1 %
Texas976 13,615.4 13.6 
Pennsylvania535 10,880.2 10.9 
Illinois467 9,065.9 9.1 
New York413 5,822.4 5.8 
New Jersey197 4,195.8 4.2 
Florida83 3,184.1 3.2 
Alabama206 3,172.7 3.2 
Ohio181 2,844.5 2.8 
Michigan163 2,342.4 2.3 
Other States1,374 24,818.0 24.8 
Total insured portfolio5,419 $99,996.9 100.0 %
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The following table presents BAM’s insured portfolio by issuer size of exposure as of December 31, 20212023 and 2020:2022:
$ in Millions$ in MillionsDecember 31, 2021December 31, 2020$ in MillionsDecember 31, 2023December 31, 2022
Original Par Amount Per Issuer(1)
Original Par Amount Per Issuer(1)
Number of RisksGross Par OutstandingPercent of Total Gross Par OutstandingNumber of RisksGross Par OutstandingPercent of Total Gross Par Outstanding
Original Par Amount Per Issuer (1)
Number of RisksGross Par OutstandingPercent of Total Gross Par OutstandingNumber of RisksGross Par OutstandingPercent of Total Gross Par Outstanding
Less than $10 millionLess than $10 million3,118 $13,325.2 14.9 %2,647 $10,510.1 14.0 %Less than $10 million2,915 $$10,950.7 10.0 10.0 %2,822 $$10,937.1 10.9 10.9 %
$10 to $50 million$10 to $50 million1,739 34,572.9 38.8 1,592 31,160.4 41.3 
$50 to $100 million$50 to $100 million266 16,350.1 18.3 230 14,072.6 18.7 
$100 to $200 million$100 to $200 million95 12,162.0 13.6 73 9,306.1 12.4 
$200 to $300 million$200 to $300 million39 8,790.9 9.9 31 6,999.8 9.3 
$300 to $400 million$300 to $400 million11 3,660.2 4.1 10 3,238.7 4.3 
$400 to $500 million$400 to $500 million1335.2 0.4 — — — 
$500 to $600 million
Total insured portfolioTotal insured portfolio5,269 $89,196.5 100.0 %4,583 $75,287.7 100.0 %Total insured portfolio5,766 $$109,673.7 100.0 100.0 %5,419 $$99,996.9 100.0 100.0 %
(1) The original par amount per issuer does not include refunded and re-issued deals.

Insured Credit WatchlistSurveillance

BAM management maintains a surveillance committee that evaluates the credit profile of each insured municipal bond on a periodic basis. The surveillance committee places each insured municipal bond into one of four surveillance categories, the last two of which represent insured municipal bonds that are on BAM’s insured credit watchlist. All BAM-insured bond payments due through February 15, 2022Surveillance category 3 represents insured municipal bonds whose issuers are experiencing financial, legal or administrative issues causing overall credit quality deterioration, but whose probability of generating an insured loss is considered remote. Surveillance category 4 represents insured municipal bonds where a loss is expected or losses have been made by BAM’s insured members,paid and therehave not been recovered or are no insured bonds on BAM’snot recoverable. As of December 31, 2023, BAM had assigned one credit watchlist (surveillanceto surveillance category 3 orand did not assign any credits to surveillance category 4).4.
Insured municipal bonds on the watchlist are monitored closely and are subject to BAM’s distressed credit management procedures, including a remediation plan developed in consultation with BAM’s legal counsel and consultants. The objectives of any remediation plan are to address the problems the issuer is facing, to address any external factors impacting the credit, to ensure that creditors’ rights are enforced and to cure any breaches that may have occurred with respect to any credit triggers or covenants. BAM may work with other insurers, municipal bondholders and/or interested parties on remediation efforts, as applicable.
Surveillance category 3 represents insured municipal bonds whose issuers are experiencing financial, legal or administrative issues causing overall credit quality deterioration, but whose probability of generating an insured loss is considered remote. Surveillance category 4 represents insured municipal bonds where a loss is expected or losses have been paid and have not been recovered or are not recoverable.
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ARKARK/WM OUTRIGGER

Overview

The Ark/WM Outrigger segment consists of Ark Insurance Holdings Limited and its subsidiaries (collectively, “Ark”) and Outrigger Re Ltd. Segregated Account 2023-1 (“WM Outrigger Re”) (collectively with Ark, “Ark/WM Outrigger”).
On January 1, 2021, White Mountains acquired a controlling ownership interest in Ark (the “Ark Transaction”). See Note 2 — “Significant Transactions”Ark is a specialty property and casualty insurance and reinsurance company that offers a wide range of niche insurance and reinsurance products, including property, specialty, marine & energy, casualty and accident & health.
During the fourth quarter of 2022, Ark sponsored the formation of Outrigger Re Ltd., a Bermuda company registered as a special purpose insurer and segregated accounts company, to provide collateralized reinsurance protection on page F-17Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2023 underwriting year. During the fourth quarter of 2023, Ark renewed the Outrigger Re Ltd. quota share agreement for a discussion of the 2024 underwriting year.

Ark Transaction.
Ark is a specialty property and casualty insurance and reinsurance company that offers a wide range of niche insurance and reinsurance products. Ark underwrites select coverages through its two major subsidiaries in the United Kingdom and Bermuda.
In the United Kingdom, Ark participates in the Lloyd’s of London (“Lloyd’s”) market through Ark Corporate Member Limited (“ACML”), Ark’s wholly-owned Lloyd’s corporate member, which in turn provides underwriting capacity to Lloyd’s Syndicates 4020 and 3902 (the “Syndicates”). Ark Syndicate Management Limited (“ASML”) is, Ark’s wholly-owned Lloyd’s managing agent, oversees the underwriting of the Syndicates. The Syndicates underwrite a diversified portfolio of insurance and reinsurance, including property, specialty, marine & energy, specialty,casualty and accident & health and casualty.health. Syndicate 4020 commenced underwriting on April 1, 2007 and Syndicate 3902 on January 1, 2017.
For the years of account prior to the Ark Transaction, a significant proportion of the Syndicates’ underwriting capital was provided by third-party insurance and reinsurance groups (“TPC Providers”) using whole account reinsurance contracts with Ark’s corporate member. The TPC Providers’ participation in the Syndicates for the 2020 and 2019 open years of account is 43% and 58% of the total net result of the Syndicates. For the years of account subsequent to the Ark Transaction, Ark is no longer using TPC Providers to provide underwriting capital for the Syndicates.
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In January 2021, in response to an improved underwriting environment and with the capital provided from the Ark Transaction, Ark converted its wholly-owned subsidiary Group Ark Insurance Limited (“GAIL”) into a Class 4 Bermuda-domiciled insurance and reinsurance company and began to underwrite third-party business. Prior to this conversion, GAIL had been a Class 3 Bermuda-domiciled reinsurance company that only underwrote intercompany quota share reinsurance with ACML and provided additional capital to support ACML’s capital requirements at Lloyd’s (“Funds at Lloyd’s”). As a result of the Ark Transaction, GAIL underwent significant expansion of operations during 2021, with the recruitment of staff and enhancement of operations, to support this growth. GAIL now underwrites a range of third-party business from Bermuda including property, specialty, marine & energy specialty and casualty lines. In December 2023, AM Best affirmed Ark’s financial strength rating at “A/stable.”
In both jurisdictions, Ark underwrites business primarily through insurance and reinsurance brokers and wholesalers, both in the open market and through managing general agencies (“MGA”).
As of December 31, 2021,2023 and 2022, White Mountains reported $3,027$4,133 million and $3,486 million of total assets and $905$1,230 million and $965 million of total equity related to Ark. As of December 31, 2021,2023 and 2022, White Mountains owned 72.0% of Ark (63.0%on a basic shares outstanding basis (61.9% and 63.0% after taking account of management’s equity incentives) and reported $231$337 million and $248 million of non-controllingnoncontrolling interests related to Ark. The remaining shares are owned by current and former employees. In the future, management rollover shareholders could earn additional shares in Ark if and to the extent that White Mountains achieves certain thresholds for its multiple of invested capital return thresholds.return. If fully earned, these additional shares would represent 12.5% of the shares outstanding at closing.

WM Outrigger Re
During the fourth quarter of 2022, Ark sponsored the formation of Outrigger Re Ltd., a Bermuda company registered as a special purpose insurer and segregated accounts company, to provide reinsurance capacity to Ark. On December 20, 2022, Outrigger Re Ltd. issued $250 million of non-voting redeemable preference shares on behalf of four segregated accounts to White Mountains and unrelated third-party investors, of which $205 million was provided by White Mountains. Upon issuance of the preference shares, Outrigger Re Ltd. entered into collateralized quota share agreements with GAIL to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2023 underwriting year. The proceeds from the issuance of the preference shares were deposited into collateral trust accounts to fund any potential obligations under the reinsurance agreements with GAIL. Outrigger Re Ltd.’s obligations under the reinsurance agreements with GAIL are subject to an aggregate limit equal to the assets in the collateral trusts. The terms of the reinsurance agreements are renewable upon the mutual agreement of Ark and the applicable preference shareholder of Outrigger Re Ltd.
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During the fourth quarter of 2023, Ark renewed Outrigger Re Ltd. to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2024 underwriting year. Outrigger Re Ltd. was capitalized with $250 million for business written in the 2024 underwriting year, of which White Mountains rolled over $130 million from its commitment to the 2023 underwriting year. The remaining capital was provided by new and continuing unrelated third-party investors.
During January 2024, White Mountains received an initial return of capital of $68 million from WM Outrigger Re for business written in the 2023 underwriting year. White Mountains expects to receive any additional return of capital and associated profits from business written in the 2023 underwriting year beginning in the second quarter of 2024.
As of December 31, 2023 and 2022, White Mountains reported $294 million and $205 million of total assets and $273 million and $204 million of total equity related to WM Outrigger Re. As of December 31, 2023 and 2022, White Mountains owned 100% of WM Outrigger Re’s preferred equity.

Insurance and Reinsurance Overview

Generally, insurance companies underwrite insurance policies in exchange for premiums paid by their customers (the insureds). An insurance policy is a contract between the insurance company and the insured where the insurance company agrees to pay for losses suffered by the insured or a third-party claimant that are covered under the contract. Such contracts are often subject to subsequent legal interpretation by courts, legislative action, and arbitration.
Reinsurance is an arrangement in which a reinsurance company (the reinsurer) agrees to indemnify an insurance company (the ceding company) for insurance risks underwritten by the ceding company. Reinsurance can benefit a ceding company in several ways, including reducing net exposure to individual risks, providing protection from large or catastrophic losses and assisting in maintaining required capital levels and financial or operating leverage ratios. Reinsurance can provide a ceding company with additional underwriting capacity by permitting it to accept larger risks and underwrite a greater number of risks without increasing its capital as much as would be the case without reinsurance. Reinsurers themselves, may also purchase reinsurance, which is known as retrocessional reinsurance to cover risks assumed from ceding companies. Reinsurance companies often enter into retrocessional reinsurance agreements for many of the reasons that ceding companies enter into reinsurance agreements.
Reinsurance is generally written on a treaty or facultative basis. Treaty reinsurance is an agreement whereby the reinsurer assumes a specified portion or category of risk under all qualifying policies issued by the ceding company during the term of the agreement, usually one year. When underwriting treaty reinsurance business, the reinsurer does not evaluate each individual risk and generally accepts the original underwriting decisions made by the ceding company. Treaty reinsurance is typically written on either a proportional or excess of loss basis. A proportional reinsurance treaty is an arrangement whereby a reinsurer assumes a predetermined proportional share of the premiums and losses generated on specified business. An excess of loss treaty is an arrangement whereby a reinsurer assumes losses that exceed a specific retention of loss by the ceding company. Facultative reinsurance, on the other hand, is underwritten on a risk-by-risk basis, which allows the reinsurer to determine individual pricing for each exposure.
Insurance and reinsurance companies incur a significant amount of their total expenses from policy obligations, which are commonly referred to as claims or losses. In settling claims, various LAE are incurred such as insurance adjusters’ fees and litigation expenses. Losses and LAE are categorized by the year in which the policy is underwritten (the year of account or underwriting year) for purposes of Ark’s claims management and estimation of the ultimate loss and LAE reserves. For purposes of Ark’s reporting under GAAP, losses and LAE are categorized by the year in which the claim is incurred (the accident year). In the following calendar years, as Ark increases or decreases its estimate for the ultimate loss and LAE for claims in prior underwriting years, or prior accident years for reporting under GAAP, it will record favorable or unfavorable loss reserve development, which is recorded in the current calendar year.year when such loss reserve development is determined. In addition, insurance companies incur policy acquisition expenses, such as commissions paid to agents and premium taxes, and other expenses related to the underwriting process, including employee compensation and benefits. A key measure of absolute and relative underwriting performance for an insurance company is the combined ratio. An insurance company’s combined ratio is calculated by adding the ratio of incurred loss and LAE to earned premiums (the loss ratio) and the ratio of policy acquisition and other underwriting expenses to earned premiums (the expense ratio). A combined ratio under 100% indicates that an insurance company is generating an underwriting profit, while a combined ratio over 100% indicates that an insurance company is generating an underwriting loss.
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Ark derives substantially all of its revenues from earned premiums, investment income and net realized and unrealized investment gains (losses). Written premiums represent the amount charged to an insured or reinsured party to provide coverage under an insurance or reinsurance contract, which are recognized as earned premiums within revenue over the period that insurance coverage period is provided (i.e., ratably over the life of the policy or, in the case of catastrophe premiums, in proportion to the level of insurance protection provided.) Unearned premiums represent the portion of premiums written that are applicable to future insurance coverage provided by policies. A significant period often elapses between receipt of insurance premiums and payment of insurance claims. During this time, Ark invests the premiums, earns investment income and generates net realized and unrealized investment gains (losses).
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Lines of Business

Ark writes specialized lines of insurance and reinsurance across its United Kingdom and Bermuda platforms within five major lines of business: property, specialty, marine & energy, specialty,casualty and accident & health and casualty.health. Claims for property, specialty, marine & energy specialty and accident & health coverages are typically reported and settled in a relatively short period of time. Casualty insurance (often referred to as liability insurance) generally covers the financial consequences of a legal liability of an individual or an organization resulting from negligent acts or omissions causing bodily injury, property damages and/or economic damages to a third party.third-party. Settlements for casualty/liability coverages can extend for long periods of time as claims are often reported and ultimately paid or settled years after the related loss events occur.
Ark has recently added, and expects to continue to add, new business to its portfolio, as it focuses on profitable business opportunities while carefully managing underwriting risk. Ark also leads two Lloyd’s market consortia that target renewable energy clients including wind farms, solar plants, hydroelectric plants, geothermal plants and wave and tidal projects.
The following table presents Ark’s gross written premiums by line of business for the years ended December 31, 2021, 20202023, 2022 and 2019, which includes periods prior to White Mountain’s ownership of Ark. White Mountains believes this information is useful in understanding the newly acquired business.2021:

Year Ended December 31,
Year Ended December 31,Year Ended December 31,
MillionsMillions202120202019Millions202320222021
PropertyProperty$438.4 $235.7 $134.4 
SpecialtySpecialty256.7118.3103.4Specialty436.6380.1256.7
Marine & EnergyMarine & Energy242.2129.1107.6Marine & Energy375.7315.1242.2
CasualtyCasualty98.785.454.4
Accident & HealthAccident & Health67.090.686.0Accident & Health70.466.467.0
Casualty54.424.440.6
Total Gross Written PremiumsTotal Gross Written Premiums$1,058.7 $598.1 $472.0 

A description of Ark’s business written within each line of business follows:

Property
Ark’s property business is underwritten on both an insurance and reinsurance basis covering the financial consequences of accidental losses to an insured’s property, such as a business’s building, inventory and equipment, or personal property. Coverages provided include all risks of direct physical loss or damage, business interruption and natural and non-natural catastrophe perils. Ark’s property insurance business consists primarily of direct and facultative contracts, lineslipsline slips and MGA binding authorities. Ark’s property insurance business is underwritten on a worldwide basis with a focus on excess & surplus lines in the United States.States and on large international accounts. Ark’s property reinsurance business consists primarily of treaty reinsurance underwritten on a catastrophe excess of loss, per risk excess and proportional basis. Ark’s property reinsurance business is underwritten on a worldwide basis with particular focus on risks in the United States, Europe and Asia.

Specialty
Ark’s specialty business is underwritten on both an insurance and reinsurance basis covering a range of individual risks and treaties primarily including aviation, space, political and credit, cyber, terrorism and political violence, product defect and contamination, nuclear, and fine art & specie.specie, surety and mortgage. Ark’s specialty insurance and reinsurance business is underwritten on a worldwide basis.

Aviation
Aviation insurance primarily covers airlines and general aviation for loss of, or damage to, aircraft hull and ensuing passenger and third-party liability. Perils include war and war-like actions such as terrorism. Additionally, liability arising out of non-aircraft operations such as hangars and airports may be covered.
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Space
Space insurance primarily covers loss of, or damage to, satellites during launch and in orbit, including faulty design that leads to early loss of operating life. Ark’s space insurance is primarily written through binders supporting specialized, technical MGAs.

Political and Credit
Political and credit insurance primarily covers risks relating to the confiscation, expropriation, nationalization and deprivation of insured assets due to war, political, or government action as well as contract frustration and non-payment by private obligors.
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Cyber
Cyber insurance primarily covers the physical damage and liabilities arising from cyber-attacks,cyber attacks, including coverage for ransomware, loss of data and third-party liabilities.

Terrorism and Political Violence
Terrorism and political violence insurance primarily covers physical loss or damage and threat thereof, including ensuing loss through business interruption, caused by declared terror events, and political violence, and war and war-like actions in developed and developing countries around the world.

Product Defect and Contamination
Product defect and contamination insurance primarily covers first and third-party costs associated with product recall or contamination including malicious product tampering, product safety, or government mandated recall. Ark’s product defect and contamination insurance covers a wide range of industries including food & beverage, manufacturing, and consumer products.

Nuclear
Nuclear insurance covers country specific nuclear pools and companies and institutions with nuclear exposure excluded from standard property and casualty policies for coverage of physical damage and third-party liability.

Fine Art & Specie
Fine art & specie insurance primarily covers loss to fine art, specie, cash in transit and vault, and jewelers’ block risks as a result of theft or damage in transit or at exhibition.

Surety
Surety insurance covers financial guarantee risks between a bond issuer, principal and obligee designed to address responsibility for debt payments, default or other financial obligations. Ark underwrites this portfolio on a reinsurance basis, primarily excess of loss, for U.S. domiciled clients. The underlying assureds cover a variety of industries including construction, oil & gas, hotel & leisure, and transportation projects.

Mortgage
Mortgage insurance covers financial guarantee risks between a lending institution and a borrower designed to address responsibility for debt payments and default. Ark underwrites a small reinsurance book on behalf of one client for government-sponsored enterprises that offer insurers excess of loss credit insurance coverage on mortgage loans via Fannie Mae’s Credit Insurance Risk Transfer and Freddie Mac’s Agency Credit Insurance Structure programs.

Marine & Energy
Ark’s marine & energy business is underwritten on both an insurance and reinsurance basis primarily covering marine hull, cargo, specie, marine & energy liabilities and upstream energy platform physical damage.damage and liability. Marine hull consists primarily of coastal and ocean-going vessels and covers worldwide risks on an all perils or total loss only basis together with lighter craft, including yachts. Cargo consists of worldwide transits and moveable goods with a particular emphasis on bulk cargo, project cargo and pre-launch satellite risks. Specie is the transit and storage of high value goods including semi-precious and precious metals. Marine & energy liabilities consists of liability risks arising from doing business in their respective industries including liabilities arising from pollution and damage covered by protection and indemnity clubs, including for example the International Group of Protection & Indemnity Clubs. Upstream energy platform physical damage and liability covers a variety of oil and gas industry construction, exploration and production risks.
Ark’s marine & energy insurance business consists of direct and facultative risks written primarily in the open market, as well as through lineslipsline slips and MGA binding authorities. Ark’s marine & energy reinsurance business consists of treaty reinsurance underwritten on both a proportional and excess of loss basis. Ark’s marine & energy insurance and reinsurance business is underwritten on a worldwide basis.

Casualty
Ark’s casualty business is underwritten on an insurance and reinsurance basis primarily covering medical malpractice, professional liability and general liability. Ark’s casualty insurance business is generally written on an excess of loss basis arising from operations of a wide range of predominantly large U.S. companies, including energy companies, with global operations. Ark’s casualty reinsurance business is underwritten on an excess of loss and proportional treaty basis.

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Accident & Health
Ark’s accident & health business is underwritten on both an insurance and reinsurance basis covering a wide range of personal accident, sickness, disability, travel and medical insurance risks. Ark’s accident & health insurance business consists of direct and facultative contracts written in the open market and through Accident & Health Underwriting Limited (“AHU”), Ark’s wholly-owned MGA domiciled in the United Kingdom. Ark’s accident & health insurance and reinsurance business is underwritten on a worldwide basis.


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Casualty
Ark’s casualty business is underwritten on an insurance and reinsurance basis primarily covering medical malpractice, professional liability and general liability arising from operations of a wide range of predominantly large U.S. companies, including energy companies, with global operations. Ark’s casualty insurance business is generally written on an excess of loss basis. Ark’s casualty reinsurance business is underwritten on an excess of loss and proportional treaty basis.

Geographic Concentration

The following table shows Ark’s gross written premiums by geographic region based on the location of Ark’s underwriting offices for the years ended December 31, 2021, 20202023, 2022 and 2019, which includes periods prior to White Mountains’s ownership of Ark. White Mountains believes this information is useful in understanding the newly acquired business.2021:
Year Ended December 31,
MillionsMillionsYear Ended December 31,
Gross written premiums by countryGross written premiums by country202120202019Gross written premiums by country202320222021
United KingdomUnited Kingdom$695.9 $598.1 $472.0 
BermudaBermuda362.8 — — 
TotalTotal$1,058.7 $598.1 $472.0 

Marketing and Distribution

Ark offers its products and services through a network of brokers, MGAs and reinsurance intermediaries (collectively, “insurance and reinsurance intermediaries”). In the United Kingdom, Ark operates through the Syndicates with Lloyd’s approved brokers and MGAs. In Bermuda, Ark primarily derives its reinsurance business through reinsurance intermediaries that represent the ceding company and its insurance business through brokers based in Bermuda and London. Ark pays acquisition costs to brokers, MGAs and reinsurance intermediaries as compensation for facilitating the flow and processing of business, typically on industry standard percentages of premium underwritten. In addition, Ark pays certain MGAs profit commissions based on the underwriting profit of the business they produce.
During the years ended December 31, 2021, 20202023, 2022 and 2019,2021, Ark received a significant portion of its gross written premiums from threefour insurance and reinsurance intermediaries. The following table shows the proportion of business produced by the top threefour insurance and reinsurance intermediaries for the years ended December 31, 2021, 20202023, 2022 and 2019, which includes periods prior to White Mountains’s ownership of Ark. White Mountains believes this information is useful in understanding the newly acquired business.2021:

Year Ended December 31,
Year Ended December 31,Year Ended December 31,
Gross written premiums by insurance
and reinsurance intermediary
Gross written premiums by insurance
and reinsurance intermediary
202120202019Gross written premiums by insurance and reinsurance intermediary202320222021
Marsh & McLennan Companies, Inc.Marsh & McLennan Companies, Inc.26.5 %16.2 %12.4 %Marsh & McLennan Companies, Inc.27.5 %27.1 %26.5 %
Arthur J. Gallagher & Co
Aon plcAon plc15.6 11.6 11.1 
Willis Towers Watson plcWillis Towers Watson plc13.8 11.2 10.6 
Total proportion of business produced by the top three insurance and reinsurance intermediaries55.9 %39.0 %34.1 %
Total proportion of business produced by the top four
insurance and reinsurance intermediaries
Total proportion of business produced by the top four
insurance and reinsurance intermediaries
66.1 %66.1 %64.5 %

Underwriting and Pricing

Ark aims to build a diversified and balanced portfolio of risks that generates an underwriting profit across the book each year. Ark believes in a disciplined underwriting strategy that aims to consistently outperform the market. In hard market conditions, Ark aims to grow premiums rapidly, as pricing, terms and conditions and limit deployment are more favorable and can lead to enhanced returns on capital. In soft markets, Ark is willing to reduce its business volume when pricing, terms and conditions and limit deployment can make it more difficult to achieve an adequate return on capital. Ark is willing to forgo business if it believes it is not priced appropriately for the exposure or risk assumed.

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The management of underwriting quality can be difficult in a competitive market where underwriters are often under pressure to meet premium and pricing targets. Ark operates an underwriting controls framework which includes individual underwriting authorities, continual quality monitoring and peer review of risks. The framework aims to ensure a high quality of underwriting through monitoring of pricing and rate change, contract certainty and appropriate terms and conditions. The nature of delegated underwriting naturally increases the risk of underwriting, through the ability of third parties being able to bind Ark to risks without detailed review of the risk involved. This risk is mitigated through the application of strict guidelines, managed by a dedicated team within the Ark compliance department. This team reviews MGA and third-party binding authority approvals pre-bind and monitors a program of audits to ensure compliance with regulations and guidelines.
Ark uses bespoke pricing models for each of the products that it underwrites. These pricing models seek to generate a pricing metric required to achieve an acceptable return on capital for each class of business, and each of the risks priced therein. These models rely on several factors depending on the class of business, including exposure analysis, historical experience, estimates of future loss costs, claims experience and natural catastrophe outlook, including the physical risk of climate change and inflation. See “Ark — Catastrophe Risk Management and Reinsurance Protectionbelow.on page 13.
Ark actively monitors price adequacy at various points between individual risks and the portfolio level to measure and evaluate overall performance. In addition, Ark updates rates to achieve targeted returns on capital at an individual risk as well as portfolio level to enhance likely outcomes in terms of return on capital.

Competition

Specialized lines of insurance and reinsurance are highly competitive. Ark competes with other Lloyd’s syndicates, London companies market participants and major U.S., Bermuda, and European and other international insurance and reinsurance companies. The most significant competitive factors for most products are price, terms and conditions, broker relationships, underwriting service, rating agency financial strength rating, and claims service. Ark competes with insurance and reinsurance companies who operate in the Bermuda and Lloyd’s markets such as:
Bermuda and insurance and reinsurance market: American International Group, Inc. (“AIG”), Arch Capital Group Ltd., Aspen Insurance Holdings Ltd., Everest Re Group, RenaissanceRe Holdings Ltd. and others;
Lloyd’s market: MS Amlin Ltd, Lancashire Holdings Ltd, Beazley plc, Hiscox plc, and other syndicates.

Claims Management

Effective claims management is a critical factor in achieving satisfactory underwriting results. Ark maintains an experienced staff of dedicated claims handlers and loss adjusters. These individuals seek to ensure that Ark has the appropriate level of expertise to handle claims involving sometimes very complex issues.claims. Within the claims departments, Ark also uses various shared services. These include third-party claims administrators, particularly for lower value, less specialized claims (for example in Ark’s MGA produced business), subrogation and recovery support, and legal representation.
For business written in the Lloyd’s market, claims handling and case reserves are established in accordance with the applicable Lloyd’s Claim Scheme and Lloyd’s Claims Management Principles and Minimum Standards.Oversight Framework.

Catastrophe Risk Management and Reinsurance Protection

Catastrophe Risk Management and Reinsurance Protection

Catastrophe Risk ManagementArk
Ark has exposure to losses caused by unpredictable catastrophic events all over the world including natural and other disasters such as hurricanes, windstorms, earthquakes, floods, wildfires, tornadoes, tsunamis, and severe winter weather all over the world.weather. Catastrophes can also include large losses driven by public health crises, terrorist attacks, war and war-like actions, explosions, infrastructure failures, and cyber-attacks.cyber attacks. The extent of a catastrophe loss is a function of both the severity of the event and total amount of insured exposure to the event, as well as the coverage provided to customers. Increases in the value and concentration of insured property or insured employees, the effects of inflation, changes in weather patterns and increased terrorism and war and war-like actions could increase the future frequency and/or severity of claims from catastrophic events. Climate change, contributes towhich is characterized by higher temperatures, sea level rise and more extreme weather events including droughts, heavy storms, wildfires and stronger hurricanes, which increases the frequency and severity of certain major natural catastrophes. There is also a growing threat of cyber catastrophes due to the increasing interconnectivity of global systems.
Ark seeks to manage its exposure to catastrophic losses by limiting and monitoring the aggregate insured value of policies in geographic areas with exposure to catastrophic events and by buying reinsurance. To manage, monitor and analyze insured values and potential losses, Ark utilizes proprietary and third-party catastrophe management software to estimate potential losses for many different catastrophe scenarios. Ark incorporates the physical risk of climate change in its underwriting process through sensitivity and stress testing of its catastrophe models, including increased frequency of U.S. windstorms and the implications of storm surge.

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Ark licenses third-party global property catastrophe models from Risk Management Solutions Inc. (“RMS”), as well as utilizing its own proprietary models to calculate expected probable maximum loss estimates (“PML”) from various property and non-property catastrophe scenarios. Ark prices property catastrophe contracts using its own proprietary models that can take inputs from third-party software and other data as appropriate. For business that Ark determines to have exposure to catastrophic perils, as part of its underwriting process, it models and assessesevaluates the exposure to assess whether there is an appropriate premium charged for the exposure assumed.
The following table provides an estimate of Ark’s two largest natural catastrophe PML zones on a per occurrence basis for 1-in-100 anda 1-in-250 year events atevent as of January 20222024, as measured byon a net after-tax exposure basis:
$ in MillionsModeled Industry LossArk Gross LossNet After Reinsurance and ReinstatementsNet After TaxNet After Tax as a % of Tangible CapitalNet After Tax as a % of Tangible Equity
1 in 250 year occurrence
U.S. Windstorm$243,033 $670 $303 $282 32 %41 %
U.S. Earthquake$88,116 $456 $156 $145 17 %21 %
1 in 100 year occurrence
U.S. Windstorm$163,066 $503 $171 $159 18 %23 %
U.S. Earthquake$54,083 $295 $76 $71 %10 %
basis, are U.S. windstorm and U.S. earthquake.
The January 2022 net after-tax exposure is net of amounts ceded to U.S. windstorm does not reflectreinsurers and reinstatement premiums. Different perils are more prevalent at different times of the full placement of Ark’syear, and Ark tailors its outwards reinsurance program planned for 2022.to incept accordingly throughout the year. Once the placement of theArk’s 2024 outwards reinsurance program is completed, in advance of the peak U.S. windstorm season, Ark expects theits net after-tax exposure for a 1-in-250 year event to this zoneeach of these PML zones to approximate 25%25-35% of total tangible capital in line with its business plan for 2022. (tangible shareholders equity and subordinated debt). Total tangible capital was $1,261 million as of December 31, 2023.
In addition, Ark also has loss exposures to other global natural catastrophe events including, but not limited to, Japanese earthquakes, Japanese windstorms, European windstorms, and U.S. wildfires.
Ark’s estimates of potential losses are dependent on many variables, including assumptions about storm intensity, storm surge, and loss amplification, loss adjustment expenses and insurance-to-value in the aftermath of weather-related catastrophes. In addition, Ark has to account for quality of data provided by insureds. Accordingly, if the assumptions are incorrect, the losses Ark might incur from an actual catastrophe could be materially different than the expectation of losses generated from modeled catastrophe scenarios. There could also be unmodelled losses which exceed the amounts estimated for U.S. windstorm and U.S. earthquake catastrophes.
Outside of natural catastrophe losses, Ark has exposure to non-natural or man-made large losses. Ark uses data from clients and combines this with accumulation tools and PML assessments to obtain potential loss scenarios. The current largest exposures are cyber, offshore energy production platforms, terrorism events, war and war-like actions and political risk.
Cyber losslosses can be derived from a number of scenarios that include major data security breach on large multinational organizations, business blackout from cyber-attackcyber attack on power generation and distribution facilities, malicious attack on cloud service provider data center and ransomware contagion across both individual and multiple corporations. Catastrophic losslosses in respect of offshore energy production facilities can include physical damage, business interruption, pollution liability, extra expenses and control of oil or gas flow therefrom. Terrorism and war and war-like actions can include physical damage, business interruption, liability, loss of life and fire following at locations around the world either in a single city or in coordinated attacks across multiple cities.cities, countries or regions. Political risk scenarios can include confiscation, expropriation, nationalization and deprivation of assets, non-payment of obligations, political violence and war derived from geo-political instability, country overthrow and commodity price movement. Ark’sArk estimates of its largest net after-tax loss from these and other non-natural or non-natural/man-made large losses each approximate 15% or lessloss scenarios to be approximately 12% of total tangible capital.

WM Outrigger Re
Effective January, 1, 2023, through its quota share reinsurance agreement with GAIL, WM Outrigger Re has exposure to losses caused by unpredictable catastrophic events including natural and other disasters all over the world such as hurricanes, windstorms, earthquakes, floods, wildfires, tornadoes, tsunamis, severe weather, and infrastructure failures. The extent of a catastrophe loss is a function of both the severity of the event and total amount of insured exposure to the event, as well as the coverage provided to customers. Increases in the value and concentration of insured property, the effects of inflation and changes in weather patterns could increase the future frequency and/or severity of claims from catastrophic events. Climate change, which is characterized by higher temperatures, sea level rise and more extreme weather events including droughts, heavy storms, wildfires and stronger hurricanes, increases the frequency and severity of certain major natural catastrophes.
WM Outrigger Re’s two largest natural catastrophe PML zones on a per occurrence basis for a 1-in-250 year event as of January 2024, as measured on a net after-tax exposure basis, are U.S. windstorm and U.S. earthquake. WM Outrigger Re’s obligations under the reinsurance agreement with GAIL are subject to an aggregate limit equal to the assets in the collateral trust at any point in time.
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Ark/WM Outrigger
When considering both Ark and WM Outrigger Re, White Mountains’s two largest natural catastrophe PML zones on a per occurrence basis for a 1-in-250 year event as of January 2024, as measured on a net after-tax exposure basis, are U.S. windstorm and U.S. earthquake. The net after-tax exposure is net of amounts ceded to reinsurers and reinstatement premiums. Different perils are more prevalent at different times of the year, and Ark tailors its outwards reinsurance program to incept accordingly. Once the placement of Ark’s 2024 outwards reinsurance program is completed, White Mountains expects its consolidated net after-tax exposure for a 1-in-250 year event to each of these PML zones will be roughly 10% of White Mountains’s common shareholders’ equity as of December 31, 2023.

Reinsurance Protection
As part of its enterprise risk management function, Ark purchases reinsurance for risk mitigation purposes.
Ark utilizes reinsurance and retrocession agreements to reduce earnings volatility, protect capital, limit its exposure to risk concentration and accumulation of loss and to manage within its overall internal risk tolerances or those set and agreed by regulators, ratings agencies and Lloyd’s. Ark also enters into reinsurance and retrocession agreements to reduce its liability on individual risks and enable it to underwrite policies with higher limits where Ark believes this has a broader business benefit.
Ark seeks to protect its downside risk from catastrophes and large loss events by purchasing reinsurance, including quota share and excess of loss protections, aggregate covers, and industry loss warranties. Ark also considers alternative structures such as collateralized reinsurance, retrocessional reinsurance and catastrophe bonds.
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During the fourth quarter of 2022, Ark entered into a 40% collateralized quota share agreement with Outrigger Re Ltd., a Bermuda special purpose insurer, covering Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2023 underwriting year. During the fourth quarter of 2023, Ark renewed the Outrigger Re Ltd. quota share agreement for the 2024 underwriting year.
The purchase of reinsurance does not discharge Ark from its primary liability for the full value of its policies, and thus the collectability of balances due from Ark’s reinsurers is critical to its financial strength. Ark monitors the financial strength and ratings of its reinsurers on an ongoing basis. See Note 6 — “Third-party ReinsuranceReinsurance” on page F-47F-45 for a discussion of Ark’s top reinsurers.

Ark’s Loss and LAE Reserves

Ark establishes loss and LAE reserves that are estimates of amounts needed to pay claims and related expenses in the future for insured events that have already occurred, including both reported and unreported claims. Loss reserves are established due to the significant periods of time that may occur between the occurrence, reporting and payment of a loss. The process of estimating reserves involves a considerable degree of judgment by management and is inherently uncertain. See “CRITICAL ACCOUNTING ESTIMATES — Loss and LAE Reserves” on page 79 and Note 5 — “Losses“Loss and Loss Adjustment Expense Reserves” on page F-35F-33 for a full discussion regarding Ark’s loss reserving process.

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NSM


KUDU

Overview

Kudu provides capital solutions for boutique asset and wealth managers for a variety of purposes including generational ownership transfers, management buyouts, acquisition and growth finance and legacy partner liquidity. Kudu also provides strategic assistance to investees from time to time. Kudu’s capital solutions generally are structured as noncontrolling equity interests in the form of revenue and earnings participation contracts (“Participation Contracts”) and designed to generate immediate cash yields.
During 2023, White Mountains committed an incremental $150 million of equity capital to Kudu, of which $130 million is undrawn as of December 31, 2023.Kudu expects to fund new capital deployments through the funds remaining from White Mountains’s capital commitment, excess operating cash flows, recycling of certain sales transaction proceeds, available debt capacity and additional equity commitments.
As of December 31, 2023 and 2022, White Mountains reported $959 million and $826 million of total assets and $684 million and $553 million of total equity related to Kudu. As of December 31, 2023 and 2022, White Mountains owned 89.6% and 89.3% of Kudu (76.3% and 76.1% on a fully-diluted/fully-converted basis) and reported $114 million and $75 million of noncontrolling interests related to Kudu.

Portfolio

As of December 31, 2023, Kudu has deployed $884 million into 25 asset and wealth management firms globally, including three that have been exited. As of December 31, 2023, the asset and wealth management firms had combined assets under management of approximately $104 billion, spanning a range of asset classes including real estate, wealth management, hedge funds, private equity and alternative credit strategies. Kudu’s capital was deployed at an average gross cash yield at inception of 9.9%.
Kudu’s philosophy is to partner with asset and wealth management firms that exhibit strong cash flow generation and growth. Kudu seeks to provide its solutions across a diverse mix of investment strategies and asset classes in the middle market.
Kudu’s average capital deployment to date has been approximately $35 million, with a range from $14 million to $81 million. Apportioned by manager type, Kudu’s portfolio as of December 31, 2023 was deployed 41% in private capital, 29% in alternatives segments, 19% in wealth management and 11% in traditional asset management. Kudu seeks diversity across asset classes. Kudu also prioritizes the private capital segment as the underlying clients of these firms tend to be locked-up for an extended period, which can provide stability of revenues in a potential market downturn.
Kudu expects that no single manager will represent more than 25% of Kudu’s net investment income. As more capital is deployed, the reliance on any one manager is expected to decrease. Additionally, Kudu seeks to diversify geographically. Its portfolio currently includes 16 firms headquartered in 11 different states in the United States, three in the United Kingdom, two in Australia and one in Canada.

OTHER OPERATIONS

White Mountains’s Other Operations consists of the Company and its wholly-owned subsidiary, White Mountains Capital, LLC (“WM Capital”), its other intermediate holding companies, its wholly-owned investment management subsidiary, White Mountains Advisors LLC (“WM Advisors”), investment assets managed by WM Advisors, its interests in MediaAlpha, Inc. (“MediaAlpha”), PassportCard Limited (“PassportCard”) and DavidShield Life Insurance Agency (2000) Ltd. (“DavidShield”) (collectively, “PassportCard/DavidShield”), Elementum Holdings LP (“Elementum”), certain other consolidated and unconsolidated entities (“Other Operating Businesses”) and certain other assets.
On October 25, 2023, White Mountains announced the launch of WTM Partners, which will acquire businesses in non-insurance, non-financial services sectors including essential services, light industrial and specialty consumer. White Mountains expects to deploy up to $500 million of equity capital through WTM Partners over time.

WM Advisors

As of December 31, 2023, WM Advisors managed and/or provided oversight and administration for substantially all of White Mountains’s fixed maturity investments, short-term investments, common equity securities and other long-term investments, with the exception of BAM’s investment portfolio, which is managed by BAM and sub-advised to an outside third-party registered investment manager.


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MediaAlpha

MediaAlpha is a marketing technology company. It operates a transparent and efficient customer acquisition technology platform that facilitates real-time transactions between buyers and sellers of consumer referrals (i.e., clicks, calls and leads), primarily in the property & casualty, health and life insurance verticals. MediaAlpha generates revenue by earning a fee for each consumer referral sold on its platform. A transaction becomes payable only on a qualifying consumer action, and is not contingent on the sale of a product to the consumer.
On October 30, 2020, MediaAlpha completed an initial public offering (the “MediaAlpha IPO”). In the offering, White Mountains sold 3.6 million shares at $19.00 per share ($17.67 per share net of underwriting fees) and received total proceeds of $64 million. White Mountains also received $55 million of net proceeds related to a dividend recapitalization at MediaAlpha prior to the MediaAlpha IPO.
On March 23, 2021, MediaAlpha completed a secondary offering of 8.1 million shares. In the secondary offering, White Mountains sold 3.6 million shares at $46.00 per share ($44.62 per share net of underwriting fees) for net proceeds of $160 million.
On June 26, 2023, White Mountains completed a tender offer to purchase 5.9 million additional shares of MediaAlpha at a purchase price of $10.00 per share.
White Mountains’s noncontrolling equity interest in MediaAlpha is accounted for at fair value based on the publicly traded share price of MediaAlpha’s common stock. As of December 31, 2023, White Mountains owned 22.9 million shares, representing a 34.9% basic ownership interest (33.1% on a fully-diluted/fully-converted basis). As of the December 31, 2023 closing price of $11.15 per share, the fair value of White Mountains’s investment in MediaAlpha was $255 million. As of December 31, 2022, White Mountains owned 16.9 million MediaAlpha shares, representing a 27.1% ownership interest (25.1% on a fully-diluted/fully-converted basis). At the December 31, 2022 closing price of $9.95 per share, the fair value of White Mountains’s investment in MediaAlpha was $169 million.

PassportCard/DavidShield

PassportCard/DavidShield is principally an MGA that provides two insurance products: leisure travel insurance and expatriate medical insurance. PassportCard/DavidShield delivers a real-time, paperless insurance solution that facilitates claims payouts in minutes, wherever customers need them around the world. PassportCard/DavidShield offers its products to both individuals and organizations, primarily in Israel (its home market) as well as the European Union and Australia. In 2020, PassportCard/DavidShield received regulatory approval for its wholly-owned carrier. The carrier writes both leisure travel and expatriate medical insurance in Israel and cedes 100% of the underwriting risks to its reinsurance partners.
PassportCard is a U.K. domiciled global MGA. PassportCard receives commissions for placing policies with its insurance carrier partners and licensing fees for use of its card-based technology. PassportCard distributes its products through the broker channel and on a direct-to-consumer basis and also franchises its solutions in certain markets to major travel insurance and medical assistance companies.
DavidShield is an MGA that is the leading provider of expatriate medical insurance in Israel. Since 2000, DavidShield has delivered industry-leading medical insurance solutions to diplomats, non-governmental organizations and thousands of multinational corporations and individuals in over 95 countries. DavidShield receives structured commissions for placing policies with its insurance carrier partners and licensing fees for use of its card-based technology.
There are a number of distinct advantages to the PassportCard/DavidShield insurance solutions that differentiate them in the marketplace. Through the real-time claims handling process, PassportCard/DavidShield is generally able to control claims, loss costs and fraud upfront, driving lower than industry average loss ratios for their reinsurance partners. Further, the card-based, paperless delivery model enables a superior customer experience, commanding industry-leading customer retention rates and strong brand loyalty.
As of December 31, 2023 and 2022, White Mountains owned 53.8% of PassportCard/DavidShield. The governance structures for both PassportCard and DavidShield were designed to give White Mountains and its co-investor equal power to make the decisions that most significantly impact operations.
White Mountains’s noncontrolling equity interest in PassportCard/DavidShield is accounted for at fair value within other long-term investments. As of December 31, 2023 and 2022, the fair value of White Mountains’s interest in PassportCard/DavidShield was $150 million and $135 million.


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Elementum

Elementum is a third-party registered investment adviser specializing in natural catastrophe insurance-linked securities (“ILS”). Elementum manages separate accounts and pooled investment vehicles across various ILS sectors, including catastrophe bonds, collateralized reinsurance investments and industry loss warranties on behalf of third-party clients.
White Mountains has a noncontrolling equity interest in Elementum, which is accounted for at fair value within other long-term investments. As of December 31, 2023 and 2022, the fair value of White Mountains’s interest in Elementum totaled $35 million and $30 million. As of December 31, 2023 and 2022, White Mountains had a 26.6% and 29.7% limited partnership interest in Elementum.
White Mountains also has investments in ILS funds managed by Elementum. During the fourth quarter of 2022, White Mountains agreed to invest an additional $100 million into ILS funds managed by Elementum beginning in 2023. White Mountains pre-funded $70 million of this investment as of December 31, 2022, which was recorded as a receivable within other assets. As of December 31, 2023 and 2022, White Mountains had $161 million and $49 million invested in the ILS funds managed by Elementum.

Other Operating Businesses

White Mountains has controlling equity interests in various other operating businesses, which are consolidated. As of December 31, 2023, White Mountains reported $107 million of total assets, $49 million of total equity (net of intercompany eliminations) and $9 million of noncontrolling interests related to these businesses. As of December 31, 2022, White Mountains reported $154 million of total assets, $74 million of total equity and $20 million of noncontrolling interests related to these businesses.
White Mountains also has noncontrolling equity interests in various other operating businesses and private debt instruments with various other operating businesses, which are generally accounted for at fair value within other long-term investments. As of December 31, 2023 and 2022, the fair value of these interests totaled $40 million and $35 million.

Bamboo Transaction

On October 19, 2023, White Mountains entered into an agreement and plan of merger (the “Bamboo Merger Agreement”) with Bamboo MGA and John Chu, as the unitholders’ representative. Under the terms of the Bamboo Merger Agreement, White Mountains’s wholly-owned subsidiary, WM Pierce Merger Sub LLC, agreed to merge with and into Bamboo MGA, with Bamboo MGA continuing as the surviving company (the “Bamboo Merger”). Concurrently with the execution of the Bamboo Merger Agreement, certain Bamboo management unitholders agreed to rollover the majority of their existing equity in Bamboo MGA into Bamboo Holdings. White Mountains also agreed to make an equity contribution to Bamboo immediately following the Bamboo Merger (together with the Bamboo Merger and the rollover transactions, the “Bamboo Transaction”).
On January 2, 2024, White Mountains closed the Bamboo Transaction in accordance with the terms of the Bamboo Merger Agreement, investing $297 million in equity into Bamboo, which included a contribution of $36 million to retire Bamboo’s legacy credit facility and a contribution of $20 million of primary capital. The consideration is subject to customary purchase price adjustments. At closing, White Mountains owned 72.8% of Bamboo on a basic shares outstanding basis (63.7% on a fully-diluted/fully-converted basis, taking account of management’s equity incentives). At closing, 16.1% of basic shares outstanding are owned by Bamboo management (26.6% on a fully-diluted/fully-converted basis).
Bamboo is a capital-light, tech- and data-enabled insurance distribution platform providing homeowners’ insurance and related products to the residential property market in California. Bamboo operates primarily through Bamboo MGA, its full-service MGA business, where the company manages all aspects of the placement process on behalf of its fronting and reinsurance partners, including product development, marketing, underwriting, policy issuance and claims oversight, and it earns commissions based on the volume and profitability of the insurance that it places. It offers both admitted and non-admitted insurance products. Bamboo also operates two separate but integrated business models: (i) a retail agency, within Bamboo MGA, offering ancillary products (e.g., flood, earthquake) on behalf of third parties and (ii) Bamboo Captive, a Bermuda-domiciled captive reinsurer that participates in the underwriting risk of Bamboo’s MGA programs to align interests with reinsurance partners. For the fourth quarter and year ended December 31, 2023, Bamboo had $75 million and $215 million of managed premium, up from $24 million and $86 million for the fourth quarter and year ended December 31, 2022. These periods were prior to White Mountains’s ownership of Bamboo. Managed premium represents the total premium placed by Bamboo during the period.

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INVESTMENTS

White Mountains’s investment philosophy is to maximize long-term, after-tax total returns while taking prudent levels of risk and maintaining a diversified portfolio, subject to White Mountains’s investment guidelines and various regulatory restrictions. Under White Mountains’s investment philosophy, each dollar of after-tax investment income or investment gains (realized or unrealized) is valued equally. White Mountains’s investment philosophy also incorporates Environmental, Social and Governance (“ESG”) considerations. For investment assets actively managed by WM Advisors, thorough credit risk assessments are conducted, utilizing Nationally-Recognized Statistical Rating Organizations research and ratings. For actively managed investment assets sub-advised to third-party registered investment managers, White Mountains only utilizes managers who incorporate ESG factors into their investment processes.
White Mountains maintains a fixed income portfolio that consists primarily of high-quality, short-duration, fixed maturity investments and short-term investments. White Mountains invests in fixed maturity investments that are attractively priced in relation to their investment risks and actively manages the average duration of the fixed income portfolio. As of December 31, 2023, the fixed income portfolio duration, including short-term investments, was 1.9 years. White Mountains has established relationships with select third-party registered investment advisers to manage a portion of its fixed income portfolio. See “Portfolio Composition” on page 64.
White Mountains maintains an equity portfolio that consists of common equity securities, its investment in MediaAlpha and other long-term investments. As of December 31, 2023, White Mountains’s portfolio of common equity securities consists of international listed equity funds and passive exchange traded funds (“ETFs”). White Mountains’s other long-term investments consist primarily of unconsolidated entities, Kudu’s Participation Contracts, private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits, ILS funds and private debt instruments.

DISCONTINUED OPERATIONS

NSM

On August 1, 2022, White Mountains Holdings (Luxembourg) S.à r.l. (“WTM Holdings Seller”), an indirect wholly-owned subsidiary of White Mountains, completed the previously announced sale of White Mountains Catskill Holdings, Inc. and NSM Insurance HoldCo, LLC (“NSM”) (collectively with White Mountains Catskill Holdings, Inc., the “NSM Group”) to Riser Merger Sub, Inc., an affiliate of The Carlyle Group Inc. (the “NSM Transaction”), pursuant to the terms of the securities purchase agreement, dated May 9, 2022. See Note 2 — “Significant Transactions” on page F-17. NSM is a full-service MGA and program administrator with delegated binding authorities for specialty property and casualty insurance. The company places insurance in niche sectors such as specialty transportation, real estate, social services and pet. On behalf of its insurance carrier partners, NSM typically manages all aspects
As a result of the placement process, including product development, marketing, underwriting, policy issuanceNSM Transaction, the assets and claims.liabilities of NSM earns commissions based onGroup have been presented in the volume and profitabilitybalance sheet as held for sale for periods prior to the closing of the insurance that it places.transaction, and the results of operations for NSM does not take insurance risk.
NSM distributes through a variety of channels. Commercial products are sold through a network of roughly 10,000 independent brokers. NSM also transacts business on a “direct to consumer” basis in certain segments (e.g., collector car and pet).
As of December 31, 2021, NSM had approximately 15 carrier partners. NSM expands its programs when market conditions are attractive and shrinks and/or shuts down its programs when market conditions are challenging. This practice has led to longstanding insurance carrier partner relationships, in some cases over 20 years. As of December 31, 2021, the five largest carrier partners accounted for approximately 65% of total premiums placed by NSM, with the largest carrier partner accounting for approximately 25%.
NSM’s primary competitors are typically specialty insurance carriers and their agents. Competitors are differentiated based on price, conditions of coverage, loss ratio performance, quality of service, technology and other factors.
Historically, NSM has grown both organically and inorganically through acquisitions. Since its inception in 1990, NSM has completed over 20 acquisitions, including six sizable acquisitions under White Mountains’s ownership.
On May 11, 2018, White Mountains acquired a 95.0% ownership interest in NSM (83.6% on a fully diluted, fully converted basis) for cash consideration of $276 million.
On May 18, 2018, NSM acquired 100% of Fresh Insurance Services Group Limited (“Fresh Insurance”). Fresh Insurance is an insurance broker that offers non-standard personal lines productshave been classified as discontinued operations in the United Kingdom. During 2020, Fresh Insurance was rebranded as partstatements of Kingfisher UK Holdings Ltd (“Kingfisher”). On April 12, 2021, NSM sold Fresh Insurance’s motor business.
On December 3, 2018, NSM acquired alloperations and comprehensive income through the closing of the net assets of KBK Insurance Group, Inc. (“KBK”). KBK is a specialty MGA focusedtransaction. Prior period amounts have been reclassified to conform to the current period’s presentation. See Note 20 — “Held for Sale and Discontinued Operations on the towing and transportation space.
On April 1, 2019, NSM acquired 100% of Embrace Pet Insurance (“Embrace”)page F-70. Embrace is a U.S. nationwide provider of pet health insurance for dogs and cats.
On June 28, 2019, NSM acquired the renewal rights on its U.S. collector car business (the “Renewal Rights”) from AIG.
On April 7, 2020, NSM acquired 100% of Kingsbridge Group Limited (“Kingsbridge”). Kingsbridge is a leading provider of commercial lines insurance and consulting services for the professional contractor and freelancer markets in the United Kingdom.
On August 6, 2021, NSM acquired 100% of J.C. Taylor Insurance (“J.C. Taylor”), an MGA offering classic and antique collector car insurance.
As of December 31, 2021 and 2020, White Mountains reported $977 million and $1,000 million of total assets and $482 million and $508 million of total equity related to NSM. As of December 31, 2021 and 2020, White Mountains owned 96.5% and 96.6% of NSM (87.3% and 89.6% on a fully diluted, fully converted basis) and reported $17 million and $17 millionof non-controlling interests related to NSM.

REGULATION

United States

Insurance Regulation
BAM is subject to regulation and supervision in New York and each of the states where it is licensed to conduct business. Generally, state regulatory authorities have broad supervisory and administrative powers over such matters as licenses, standards of solvency, premium rates, policy forms, investments, statutory deposits, methods of accounting, form and content of financial statements, claims reserves and LAE liabilities, reinsurance, minimum capital and surplus requirements, dividends and other distributions to shareholders, annual and other report filings and other market conduct. In general, such regulation is for the protection of policyholders rather than shareholders. White Mountains believes that BAM is in compliance with all applicable laws and regulations pertaining to its business that would have a material effect on its financial condition and results of operations in the event of non-compliance.
Bamboo is licensed in all 50 states as an insurance producer and is registered as a managing general agent in California.White Mountains believes that Bamboo is in compliance with all applicable laws and regulations pertaining to its business that would have a material effect on its financial condition or results of operations in the event of non-compliance.
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VerticalsState Accreditation and Monitoring
State insurance laws and regulations include numerous provisions governing marketplace activities of insurers, including provisions governing marketing and sales practices, policyholder services, claims management and complaint handling. State regulatory authorities generally test and enforce these provisions through periodic market conduct examinations. The NYDFS conducts periodic examinations of insurance companies domiciled in New York, usually at five-year intervals. In 2019, the NYDFS commenced and in early 2020 completed its examination of BAM and issued a Report on Examination of BAM for the period ending December 31, 2018.The report did not note any significant regulatory issues concerning BAM.

Risk Limits
New York Insurance Law establishes single and aggregate risk limits for financial guaranty insurers. Single risk limits for financial guaranty insurers are applicable to all obligations issued by a single entity and backed by a single revenue source. Insurance on municipal obligations is subject to a limit where the insured average annual debt service for a single risk, net of qualifying reinsurance and collateral, may not exceed 10% of policyholders' surplus and contingency reserves. In addition, the insured principal of municipal obligations attributable to any single risk, net of qualifying reinsurance and collateral, is limited to 75% of policyholders' surplus and contingency reserves.
New York Insurance Law also establishes aggregate risk limits on the basis of total outstanding principal and interest of guaranteed obligations insured net of qualifying reinsurance and collateral (the “Aggregate Net Liability”), compared to the sum of the insurer’s policyholders’ surplus and contingency reserves. Under these limits, policyholders' surplus and contingency reserves for municipal obligations must not be less than 0.33% of the Aggregate Net Liability. If a financial guaranty insurer fails to comply with single or aggregate risk limits, the NYDFS has broad discretion to order the insurer to cease new business originations. As of December 31, 2023, BAM was in compliance with the single and aggregate risk limits.

Distributions
No payment of principal or interest on the BAM Surplus Notes may be made without the approval of the NYDFS.

Contingency Reserves
New York Insurance Law and the insurance laws of other non-domiciliary states in which BAM is licensed require BAM to maintain a contingency reserve. The contingency reserve is established to protect policyholders against the effect of adverse economic developments or other unforeseen circumstances. BAM records a contingency reserve in accordance with New York Insurance Law and calculates and monitors contingency reserves required by other non-domiciliary states in which it is licensed.

Cybersecurity
The NYDFS’s cybersecurity regulation (“Part 500”) requires financial services institutions, including BAM, to establish and maintain a cybersecurity program designed to protect consumers’ private data and the confidentiality, integrity and availability of the institution’s information systems.

Investments
BAM is subject to state laws and regulations that require investment portfolio diversification and that dictate the quality, quantity and general types of investments it may hold. Non-compliance may cause non-conforming investments to be non-admitted when measuring statutory surplus and, in some instances, may require divestiture.

Holding Company Structure
Regulations under certain state insurance holding company acts contain reporting requirements relating to the capital structure, ownership, financial condition and general business operations of insurance entities. These regulations also contain special reporting and prior approval requirements with respect to certain transactions among affiliates. Although BAM has no ownership relationship with HG Re or HG Global, BAM agreed with the NYDFS to submit any agreements, or amendments thereto, among BAM and HG Re, HG Global and their affiliated entities or controlling persons to the NYDFS as if they were subject to Article 15 of the New York Insurance Law, which relates to transactions with holding companies.

Federal Regulation
Although the federal government does not directly regulate insurance businesses, federal legislation and administrative policies impact the industry. In addition, legislation has been introduced that, if enacted, could result in the federal government assuming a more direct role in the regulation of the insurance industry. Notably, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) created the Federal Insurance Office (“FIO”) within the Treasury Department, which is responsible for gathering information and monitoring the insurance industry to identify gaps in the regulation of insurers that could contribute to a systemic crisis in the insurance industry or U.S. financial system.

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Investment Regulation
Kudu Investment Holdings, LLC, a subsidiary of Kudu, is an investment adviser that is registered with the SEC under Section 203 of the United States Investment Advisers Act of 1940.

Bermuda

Insurance Regulation
The Insurance Act 1978 of Bermuda and related regulations, as amended (the “Insurance Act”), regulates the insurance
business of HG Re, a special purpose insurer, GAIL, Ark’s wholly-owned Class 4 insurance and reinsurance company, Outrigger Re Ltd., a special purpose insurer, and Bamboo Captive, Bamboo’s wholly-owned Class 2 captive insurer. Outrigger Re Ltd. is also registered as a segregated accounts company under the Bermuda Segregated Accounts Companies Act 2000, as amended (the “SAC Act”). The Insurance Act provides that no person may carry on any insurance business in or from within Bermuda unless registered as an insurer under the Insurance Act by the Bermuda Monetary Authority (“BMA”). The BMA, in deciding whether to grant registration, has broad discretion to act as it thinks fit in the public interest. From time to time, HG Re, GAIL and Outrigger Re Ltd. may apply for, and be granted, certain modifications to, or exemptions from, regulatory requirements, which may otherwise apply to them.
The Insurance Act imposes solvency and liquidity standards as well as auditing and reporting requirements and confers on the BMA powers to supervise, investigate and intervene in the affairs of insurance companies. The SAC Act stipulates its own solvency test for the declaration of dividends and distributions for segregated accounts, which takes into account the solvency of each segregated account individually, rather than the solvency of the company itself.

Classification
GAIL is registered as a Class 4 insurer. Class 4 insurers carry on general insurance business including excess liability business or property catastrophe, marine & energy, casualty and specialty reinsurance business and have a total statutory capital and surplus of not less than $100 million.
As special purpose insurers, HG Re and Outrigger Re Ltd. are insurers that carry on special purpose business. Special purpose business under the Insurance Act is insurance business under which an insurer fully collateralizes its liabilities to the insured persons through (i) the proceeds of any one or more of (a) a debt issuance where the repayment rights of the providers of such debt are subordinated to the rights of the person insured, or (b) some other financing mechanism approved by the BMA; (ii) cash; and (iii) time deposits. Special purpose insurers may be registered to carry on either restricted special purpose business or unrestricted special purpose business. Restricted special purpose business is special purpose business conducted between a special purpose insurer and specific insureds approved by the BMA. Unrestricted special purpose business means special purpose business conducted by a special purpose insurer with any insured. Both HG Re and Outrigger Re Ltd. are only able to carry on restricted purpose business.

Capital and Solvency Return
As a Class 4 insurer, GAIL is required to file, on an annual basis, a capital and solvency return in respect of its general business, which currently includes, among other items, a statutory economic balance sheet, a schedule of risk management, a catastrophe risk return, a schedule of loss triangles or reconciliation of net loss reserves (where applicable), a schedule of eligible capital and the Enhanced Capital Requirement (“ECR”) as calculated by the Bermuda Solvency and Capital Requirement (“BSCR”) model (or an approved internal model). The BSCR is a mathematical model designed to give the BMA robust methods for determining an insurer’s capital adequacy. Underlying the BSCR is the belief that all insurers should operate on an ongoing basis with a view to maintaining their capital at a prudent level in excess of the minimum solvency margin otherwise prescribed under the Insurance Act. The 2023 BSCR must be filed with the BMA before April 30, 2024; at this time, we believe GAIL will exceed the minimum amount required to be maintained under Bermuda law.
As special purpose insurers, HG Re and Outrigger Re Ltd. are also required to file annually with the BMA a statutory return which includes, among other matters, the statutory financial statements, a statement of control and changes of control, a solvency certificate, an annual statutory declaration, an own-risk assessment, alternative capital arrangements report, cyber risk management report and compliance with sanctions report.

NSM’s
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Financial Condition Report
As a Class 4 insurer, GAIL is required to prepare and publish a financial condition report (“FCR”), which provides, among other things, details of measures governing the business consistsoperations, corporate governance framework and solvency and financial performance of approximately 25 active programsthe insurer/insurance group. The FCR will be made available in accordance with the requirements of the Insurance Act.
As special purpose insurers, HG Re and Outrigger Re Ltd. are not subject to this requirement.

Minimum Solvency Margin
As a general business insurer, GAIL is required to maintain statutory assets in excess of its statutory liabilities by an amount, equal to or greater than the prescribed minimum solvency margin. The minimum solvency margin that are broadly categorized into six market verticals. J.C. Taylor was addedmust be maintained by a Class 4 insurer is the greater of (i) $100 million, (ii) 50% of net premiums written (with a credit for reinsurance ceded not exceeding 25% of gross premiums), (iii) 15% of net aggregate loss and loss expense provisions and other insurance reserves, or (iv) 25% of the ECR, which is established by reference to the Specialty Transportation verticalBSCR model.
As special purpose insurers, HG Re and Outrigger Re Ltd. must maintain a minimum solvency margin whereby their special purpose business assets must exceed their special purpose business liabilities by at least $1.

Enhanced Capital Requirement
As a Class 4 insurer, GAIL is required to maintain its available statutory economic capital and surplus at a level at least equal to its ECR. In either case, the ECR shall at all times equal or exceed the insurer’s minimum solvency margin and may be adjusted in circumstances where the BMA concludes that the insurer’s risk profile deviates significantly from the assumptions underlying its ECR or the insurer’s assessment of its risk management policies and practices used to calculate the ECR applicable to it. While not specifically referred to in the third quarterInsurance Act, the BMA has also established a target capital level for each Class 4 insurer equal to 120% of 2021.The following table presents the controlled premiumrespective ECR. While a Class 4 insurer is not currently required to maintain its statutory economic capital and commission and other revenues by verticalsurplus at this level, the target capital level serves as an early warning tool for the years ended December 31, 2021, 2020BMA and 2019:failure to maintain statutory capital at least equal to the target capital level will likely result in increased BMA regulatory oversight.
As special purpose insurers, HG Re and Outrigger Re Ltd. are not subject to this requirement.

Year Ended December 31,
202120202019
Millions
Controlled Premium (1)
Commission and Other Revenue
Controlled Premium (1)
Commission and Other Revenue
Controlled Premium (1)
Commission and Other Revenue
Specialty Transportation$344.7 $97.2 $310.2 $85.5 $290.2 $77.6 
United Kingdom195.2 53.1 179.5 49.4 155.5 45.9 
Pet184.9 76.3 131.9 55.0 67.6 30.0 
Real Estate153.9 34.4 189.1 44.9 157.2 34.7 
Social Services136.7 33.9 115.5 28.9 102.7 25.9 
Other165.8 35.5 134.5 21.4 124.5 19.0 
Total$1,181.2 $330.4 $1,060.7 $285.1 $897.7 $233.1 
Minimum Liquidity Ratio
The Insurance Act provides a minimum liquidity ratio for general business insurers such as GAIL. An insurer engaged in general business is required to maintain the value of its relevant assets at not less than 75% of the amount of its relevant liabilities. Relevant assets include, but are not limited to, cash and time deposits, quoted investments, unquoted bonds and debentures, investment income due and accrued, accounts and premiums receivable, insurance and reinsurance balances receivable and funds held by ceding reinsurers. Relevant liabilities include, but are not limited to, general business insurance reserves and total other liabilities less deferred income tax and sundry liabilities, letters of credit and guarantees.
As special purpose insurers, HG Re and Outrigger Re Ltd. are not subject to this requirement.
(1)
Controlled premium
Eligible Capital
As a Class 4 insurer, GAIL must maintain available capital in accordance with a “three-tiered capital system” to enable the BMA to better assess the quality of an insurer’s capital resources. All capital instruments are total premiums placed by NSM duringclassified as either basic or ancillary capital, which in turn are classified into one of three tiers (Tier 1, Tier 2 and Tier 3) based on their “loss absorbency” characteristics. Eligibility limits are then applied to each tier in determining the period.amounts eligible to cover regulatory capital requirement levels. The highest capital is classified as Tier 1 capital and lesser quality capital is classified as either Tier 2 capital or Tier 3 capital. Under this regime, not more than certain specified percentages of Tier 1, Tier 2 and Tier 3 capital may be used to satisfy the Class 4 insurers' minimum solvency margin, ECR requirements and target capital level.
As special purpose insurers, HG Re and Outrigger Re Ltd. are not subject to this requirement.


A description
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Restrictions on Dividends, Distributions and Reductions of Capital
As a Class 4 insurer, GAIL is prohibited from declaring or paying any dividends if in breach of the key programs within each market vertical follows:required minimum solvency margin or minimum liquidity ratio (the “Relevant Margins”) or if the declaration or payment of such dividend would cause the insurer to fail to meet the Relevant Margins. Further, Class 4 insurers are prohibited from declaring or paying in any financial year dividends of more than 25% of its total statutory capital and surplus (as shown on its previous financial year’s statutory balance sheet) unless it files (at least seven days before payment of such dividends) with the BMA an affidavit stating that it will continue to meet its Relevant Margins. Class 4 insurers must obtain the BMA’s prior approval for a reduction by 15% or more of the total statutory capital as set forth in its previous year’s financial statements. These restrictions on declaring or paying dividends and distributions under the Insurance Act are in addition to the solvency requirements under the Companies Act 1981 of Bermuda, as amended (the “Companies Act”). See “LIQUIDITY AND CAPITAL RESOURCES — Dividend Capacity” on page 67 for further discussion.
As special purpose insurers, HG Re and Outrigger Re Ltd. are not required to obtain the BMA’s prior approval in connection with any reduction of total statutory capital, but are prohibited from declaring or paying a dividend if they are in breach of their minimum solvency margin or if the declaration or payment of such dividend would cause such a breach. As a segregated account, the solvency test for the declaration of dividends and distributions is evaluated based upon the solvency of WM Outrigger Re, rather than the solvency of Outrigger Re Ltd.

Specialty TransportationInsurance Code of Conduct and Insurance Sector Operational Cyber Risk Management Code of Conduct
The specialty transportation vertical consistsAll Bermuda insurers are required to comply with the BMA’s Insurance Code of NSM’s U.S. collector car programs as well as all other transportation-related programsConduct, which establishes duties, requirements and standards to be complied with to ensure each insurer implements sound corporate governance, risk management and internal controls. Failure to comply with these requirements will be a factor taken into account by the BMA in determining whether an insurer is conducting its business in a sound and prudent manner under the Insurance Act and, in the United States. NSM operates its U.S. collector car business through four brands: (i) American Collectorscase of GAIL, in calculating the operational risk charge applicable in accordance with the insurer's BSCR model (or an approved internal model).
All Bermuda insurers are also required to comply with the BMA’s Insurance (ii) Condon Skelly (iii) Heacock ClassicSector Operational Cyber Risk Management Code of Conduct, which establishes duties, requirements and (iv) J.C. Taylor. Each brand has an exclusive underwriting contractstandards to be complied with an insurance carrier partnerby each insurer in relation to provide insurance coverage for antique and classic cars, vintage motorcycles and related automotive collectibles.
The other large program in the specialty transportation vertical is KBK, which is an MGA offering insurance coverages for towing businesses (e.g., tow truck operators, dealers, repair shops). NSM also offers specialty insurance coverage for motor carriers and owner operators through its True Transport and Transport Specialties programs.operational cyber risk management.

Powers of Investigation, Intervention and Obtaining Information
The BMA has certain powers of investigation and intervention relating to insurers and their holding companies, subsidiaries and other affiliates, which it may exercise in the interest of such insurer’s policyholders or if there is any risk of insolvency or of a breach of the Insurance Act or the insurer’s license conditions. The BMA may cancel an insurer’s registration on certain grounds specified in the Insurance Act.

Notification of Cyber Reporting Events
Every insurer subject to the Insurance Act is required to notify the BMA where the insurer has reason to believe that a Cyber Reporting Event has occurred. Within 14 days of such notification, the insurer must also furnish the BMA with a written report setting out all of the particulars of the Cyber Reporting Event that are available to it. A Cyber Reporting Event includes any act that results in the unauthorized access to, disruption, or misuse of electronic systems or information stored on such systems of an insurer, including breach of security leading to the loss or unlawful destruction or unauthorized disclosure of or access to such systems or information where there is a likelihood of an adverse impact to policyholders, clients or the insurer’s insurance business, or a similar event for which notice is required to be provided to a regulatory body or government agency.

Policyholder Priority
In the event of a liquidation or winding up of an insurer, policyholders’ liabilities receive payment ahead of general unsecured creditors. Subject to the prior payment of preferential debts under the Employment Act 2000 and the Companies Act, the insurance debts of an insurer must be paid in priority to all other unsecured debts of the insurer.

Certain Other Bermuda Law Considerations
The Company is an exempted company incorporated and organized under the Companies Act. As a result, the Company is required to comply with the provisions of the Companies Act regulating the payment of dividends and making of distributions from contributed surplus. A company is prohibited from declaring or paying a dividend, or making a distribution out of contributed surplus, if there are reasonable grounds for believing that:

(1) the company is, or would after the payment be, unable to pay its liabilities as they become due; or
(2) the realizable value of the company’s assets would thereby be less than its liabilities.

In addition, the Companies Act regulates return of capital, reduction of capital and any purchase or redemption of shares by the Company.
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The Economic Substance Act 2018, as amended (“ESA”) impacts every Bermuda registered entity engaged in a “relevant activity,” requiring impacted entities to maintain a substantial economic presence in Bermuda and to satisfy economic substance requirements. Under the ESA, insurance or holding entity activities (both as defined in the ESA and the Economic Substance Regulations 2018, as amended) are relevant activities. To the extent that the ESA applies to any of our Bermuda entities, we are required to demonstrate compliance with economic substance requirements by filing an annual economic substance declaration with the Bermuda Registrar of Companies. Any entity that must satisfy economic substance requirements but fails to do so could face automatic disclosure to competent authorities in the EU of the information filed by the entity with the Bermuda Registrar of Companies in connection with the economic substance requirements. Additionally, a company may also face penalties, restriction or regulation of its business activities and may be struck off as a registered entity in Bermuda for failure to satisfy economic substance requirements. The Company believes it complies with all of the applicable laws and regulations pertaining to economic substance that would have a material effect on its financial condition and results of operations in the event of non-compliance.

United Kingdom
    The United Kingdom vertical consists of all of NSM’s U.K.-based programs. The U.K. business primarily consists of Kingfisher, First Underwriting Limited (“First Underwriting”) and Kingsbridge. Kingfisher offers a variety of specialty insurance coverages in the U.K. market, including coverages for mid-market and high-end collector cars and the outdoor leisure industry (e.g., motor homes and trailers) and buildings and content insurance for non-standard properties. First Underwriting is a specialty MGA offering motor, household and surety coverages in the U.K. market. Kingsbridge is a leading provider of commercial lines insurance and consulting services for the professional contractor and freelancer markets in the United Kingdom.Other Operating Businesses

Pet
The pet segment consists of Embrace, which offers comprehensive accident and illness insurance plans for dogs and cats in the United States. Embrace also offers Wellness Rewards, an optional preventative care product that reimburses routine veterinary visits, grooming, vaccinations, training, and other services.

Real Estate
    The real estate vertical consists of NSM’s specialty real estate programs. The largest program is CHAMP, which offers insurance coverage (e.g., property, general liability and umbrella) for wind-exposed coastal condominium associations. NSM also offers specialty insurance coverages for non-coastal apartment complexes, condominiums and hotels and motels through its HabPro program.

Social Services
    The social services segment consists of three key programs: (i) Care Providers Insurance Services, which offers insurance coverages to non-profit social services organizations such as private/charter schools, charitable institutions and adult & youth centers, (ii) Addiction Treatment Providers Insurance, which offers insurance coverages to addiction treatment providers and mental healthcare facilities, and (iii) Sports & Wellness Insurance, which offers insurance coverages to a broad range of sports and wellness organizations such as fitness centers, yoga studios and university sponsored recreational programs and groups.
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Other
    The other vertical consists of five other programs, offering a wide variety of tailored insurance coverages to niche sectors including (i) professional liability insurance for architects and engineers, (ii) packaged insurance solutions for outplacement & staffing agencies, and (iii) workers compensation insurance coverages primarily for artisan contractors and restaurants and hotels.

KUDU

Overview

Kudu provides capital solutions for boutique asset and wealth managers for a variety of purposes including generational ownership transfers, management buyouts, acquisition and growth finance and legacy partner liquidity. Kudu also provides strategic assistance to investees from time to time. Kudu’s capital solutions generally are structured as minority preferred equity stakes with distribution rights, typically tied to gross revenues and designed to generate immediate cash yields.
On February 5, 2018, White Mountains entered into an agreement to provide up to $125 million to Kudu in exchange for a 49.5% ownership interest in Kudu (42.7% on a fully diluted, fully converted basis). On April 4, 2019, White Mountains acquired the ownershiphas controlling equity interests in Kudu held by certain funds managed by Oaktree Capital Management, L.P. (“Oaktree”) for cash consideration of $81 million. In addition, White Mountains assumed all of Oaktree’s unfunded capital commitments to Kudu, increasing White Mountains’s total capital commitment to $250 million (the “Kudu Transaction”). As a result of the Kudu Transaction, White Mountains’s ownership of Kudu increased from 49.5% to 99.1% (42.7% to 85.4% on a fully diluted, fully converted basis) and White Mountains began consolidating Kudu as a reportable segment in its financial statements in the second quarter of 2019. During the fourth quarter of 2019, White Mountains increased its total capital commitment to Kudu by an additional $100 million to $350 million, ofvarious other operating businesses, which $48 million was undrawn as of December 31, 2020. During the fourth quarter of 2021, White Mountains increased its total capital commitment to Kudu by an additional $19 million to $369 million.are consolidated. As of December 31, 2021, Kudu has fully drawn on the total capital commitment. Kudu expects to fund new capital deployments through excess operating cash flow, recycling of sale transaction proceeds, available debt capacity and additional equity commitments. During the first quarter of 2022,2023, White Mountains increased itsreported $107 million of total capital commitmentassets, $49 million of total equity (net of intercompany eliminations) and $9 million of noncontrolling interests related to Kudu by an additional $50 million to $419 million.
During 2019, Kudu obtained a committed $124 million credit facility (the “Kudu Bank Facility”), of which $35 million was undrawn as of December 31, 2020. During 2021, Kudu replaced the Kudu Bank Facility and entered into a secured revolving credit facility (the “Kudu Credit Facility”) with Massachusetts Mutual Life Insurance Company to repay the Kudu Bank Facility, and to fund new capital deployments and related transaction expenses. The maximum borrowing capacity of the Kudu Credit Facility is $300 million.these businesses. As of December 31, 2021, $75 million of the borrowing capacity of the Kudu Credit Facility remains undrawn.
As of December 31, 2021 and 2020,2022, White Mountains reported $727 million and $430$154 million of total assets, $466 million and $334$74 million of total equity related to Kudu. As of both December 31, 2021 and 2020, White Mountains owned 99.3% and 99.3% of Kudu (84.7% and 85.4% on a fully diluted, fully converted basis) and reported $12 million and $2$20 million of non-controllingnoncontrolling interests related to Kudu.these businesses.

Portfolio
As of December 31, 2021, Kudu has deployed $612 million in 17 asset and wealth management firms globally, including one that was exited. As of December 31, 2021, the asset and wealth management firms have combined assets under management of approximately $66 billion, spanning a range of asset classes, including real estate, real assets, wealth management, hedge funds and alternative credit strategies. Kudu’s capital was deployed at an average gross cash yield at inception of 10.1%.
Kudu’s philosophy is to partner with asset management firms that exhibit strong cash flow generation and growth. Kudu seeks to provide its solutions across a diverse mix of investment strategies and asset classes in the middle market.
Kudu’s average capital deployment to date has been approximately $35 million, with a range from $17 million to $80 million. Apportioned by manager type, Kudu’s portfolio is deployed 41% in liquid alternatives segments, 33% in private capital, 19% in wealth management and 7% in traditional asset management. Kudu seeks diversity across asset classes. Kudu also prioritizes the private capital segment as the underlying clients of these firms tend to be locked-up for an extended period, which can provide stability of revenues in a potential market downturn.
Kudu expects that no single manager will represent more than 25% of total firm revenues.As more capital is deployed, the reliance on any one manager is expected to decrease.Additionally, Kudu seeks to diversify geographically.Its portfolio currently includes 12 firms headquartered in eight different states in the United States, two in the United Kingdom, one in Australia, and one in Canada.

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OTHER OPERATIONS

White Mountains’s Other Operations segment consists of the Company and its wholly-owned subsidiary WM Capital, its other intermediate holding companies, its wholly-owned investment management subsidiary WM Advisors, investment assets managed by WM Advisors, its interests in MediaAlpha, PassportCard Limited (“PassportCard”) and DavidShield Life Insurance Agency (2000) Ltd. (“DavidShield”) (collectively, “PassportCard/DavidShield”), Elementum Holdings LP (“Elementum”), certain other consolidated and unconsolidated entities (“Other Operating Businesses”) and certain other assets.

MediaAlpha

MediaAlpha is a marketing technology company. It operates a transparent and efficient customer acquisition technology platform that facilitates real-time transactions between buyers and sellers of consumer referrals (i.e., clicks, calls and leads), primarily in the property & casualty, health and life insurance verticals. MediaAlpha generates revenue by earning a fee for each consumer referral sold on its platform. A transaction becomes payable only on a qualifying consumer action, and is not contingent on the sale of a product to the consumer. MediaAlpha’s core verticals of property & casualty insurance, health insurance and life insurance supported over $1 billion in transaction value across its platform over the last two years.
In March 2014, White Mountains acquired a controlling ownership interest in MediaAlpha. On February 26, 2019, MediaAlpha completed the sale of a significant minority stake to Insignia Capital Group in connection with a recapitalization and cash distribution to existing equityholders (the “2019 MediaAlpha Transaction”). MediaAlpha also repurchased a portion of the holdings of existing equityholders. White Mountains reduced its ownership interest to 48.3% of MediaAlpha (42.0% on a fully diluted, fully converted basis) as a result of the 2019 MediaAlpha Transaction.
On October 30, 2020, MediaAlpha completed an initial public offering (the “MediaAlpha IPO”). In the offering, White
Mountains sold 3.6 million shares at $19.00 per share ($17.67 per share net of underwriting fees) and received total proceeds of
$64 million. White Mountains also received $55 million of net proceeds related to a dividend recapitalization at MediaAlpha prior to the MediaAlpha IPO.
On March 23, 2021, MediaAlpha completed a secondary offering of 8.1 million shares. In the secondary offering, White
Mountains sold 3.6 million shares at $46.00 per share ($44.62 per share net of underwriting fees) for net proceeds of
$160 million.
White Mountains deconsolidated MediaAlpha as a result of the 2019 MediaAlpha Transactionhas noncontrolling equity interests in various other operating businesses and stopped reporting it as a segment. Prior to the MediaAlpha IPO, White Mountains’s non-controlling equity interest in MediaAlpha was accounted for at fair value withinprivate debt instruments with various other long-term investments. Following the MediaAlpha IPO, White Mountains’s non-controlling equity interest in MediaAlpha is accounted for at fair value based on the publicly traded share price of MediaAlpha’s common stock.
As of December 31, 2021, White Mountains owned 16.9 million shares, representing a 28.0% basic ownership interest
(25.7% fully-diluted/fully-converted basis). At the December 31, 2021 closing price of $15.44 per share, the fair value of
White Mountains’s investment in MediaAlpha was $262 million. As of December 31, 2020, White Mountains owned 20.5 million MediaAlpha shares, representing a 35.0% ownership interest (32.3% on a fully-diluted, fully converted basis). At the December 31, 2020 closing price of $39.07 per share, the fair value of White Mountains’s remaining investment in MediaAlpha was $802 million.

PassportCard/DavidShield

PassportCard is a U.K.-based global MGA offering the travel industry’s first real-time, paperless insurance solution,operating businesses, which facilitates claim payouts in minutes wherever and whenever the customer needs it. PassportCard receives commissions for placing policies with its insurance carrier partners and licensing fees for use of its card-based technology. PassportCard distributes its products through the broker channel and on a direct-to-consumer basis, and also franchises its solutions in certain markets to major travel insurance and medical assistance companies.
DavidShield is an MGA that is the leading provider of expatriate medical insurance in Israel and uses the same card-based delivery system as PassportCard. Since 2000, DavidShield has delivered industry-leading medical insurance solutions to diplomats, non-governmental organizations and thousands of multinational corporations and individuals in over 95 countries. DavidShield receives structured commissions for placing policies with its insurance carrier partners and licensing fees for use of its card-based technology.
There are a number of distinct advantages to the PassportCard/DavidShield insurance solutions that differentiate them in the marketplace. Through the real-time claims handling process, PassportCard/DavidShield are generally able to control claims, loss costs and fraud upfront, driving lower than industry average loss ratios for their reinsurance partners. Further, the card-based, paperless delivery model enables a superior customer experience, commanding industry-leading customer retention rates and strong brand loyalty. PassportCard/DavidShield originally launched in, and remains principally focused on, the Israeli marketplace.
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In January 2020, PassportCard/DavidShield received regulatory approval for its wholly-owned insurance carrier. The carrier writes both the leisure travel and expatriate medical business and cedes 100% of the underwriting risk to its reinsurance partner.
In April 2015, White Mountains acquired a 50.0% ownership interest in PassportCard for $21 million. In January 2018, White Mountains acquired a 50.0% ownership interest in DavidShield for a net purchase price of $28 million. As a result of the January 2018 transaction, White Mountains and its joint venture partner each held a 50.0% stake in PassportCard/DavidShield. In May 2020, White Mountains made an additional $15 million investment in PassportCard/DavidShield to support the business through the ongoing COVID-19 pandemic. The transaction increased White Mountains’s ownership interest from 50.0% to 53.8%.
White Mountains’s non-controlling equity interest in PassportCard/DavidShield is accounted for at fair value within other long-term investments. As of December 31, 20212023 and 2020,2022, the fair value of White Mountains’s interest in PassportCard/DavidShield was $120these interests totaled $40 million and $95$35 million.

Elementum

ElementumBamboo Transaction

On October 19, 2023, White Mountains entered into an agreement and plan of merger (the “Bamboo Merger Agreement”) with Bamboo MGA and John Chu, as the unitholders’ representative. Under the terms of the Bamboo Merger Agreement, White Mountains’s wholly-owned subsidiary, WM Pierce Merger Sub LLC, agreed to merge with and into Bamboo MGA, with Bamboo MGA continuing as the surviving company (the “Bamboo Merger”). Concurrently with the execution of the Bamboo Merger Agreement, certain Bamboo management unitholders agreed to rollover the majority of their existing equity in Bamboo MGA into Bamboo Holdings. White Mountains also agreed to make an equity contribution to Bamboo immediately following the Bamboo Merger (together with the Bamboo Merger and the rollover transactions, the “Bamboo Transaction”).
On January 2, 2024, White Mountains closed the Bamboo Transaction in accordance with the terms of the Bamboo Merger Agreement, investing $297 million in equity into Bamboo, which included a contribution of $36 million to retire Bamboo’s legacy credit facility and a contribution of $20 million of primary capital. The consideration is subject to customary purchase price adjustments. At closing, White Mountains owned 72.8% of Bamboo on a basic shares outstanding basis (63.7% on a fully-diluted/fully-converted basis, taking account of management’s equity incentives). At closing, 16.1% of basic shares outstanding are owned by Bamboo management (26.6% on a fully-diluted/fully-converted basis).
Bamboo is a capital-light, tech- and data-enabled insurance distribution platform providing homeowners’ insurance and related products to the residential property market in California. Bamboo operates primarily through Bamboo MGA, its full-service MGA business, where the company manages all aspects of the placement process on behalf of its fronting and reinsurance partners, including product development, marketing, underwriting, policy issuance and claims oversight, and it earns commissions based on the volume and profitability of the insurance that it places. It offers both admitted and non-admitted insurance products. Bamboo also operates two separate but integrated business models: (i) a retail agency, within Bamboo MGA, offering ancillary products (e.g., flood, earthquake) on behalf of third parties and (ii) Bamboo Captive, a Bermuda-domiciled captive reinsurer that participates in the underwriting risk of Bamboo’s MGA programs to align interests with reinsurance partners. For the fourth quarter and year ended December 31, 2023, Bamboo had $75 million and $215 million of managed premium, up from $24 million and $86 million for the fourth quarter and year ended December 31, 2022. These periods were prior to White Mountains’s ownership of Bamboo. Managed premium represents the total premium placed by Bamboo during the period.

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INVESTMENTS

White Mountains’s investment philosophy is to maximize long-term, after-tax total returns while taking prudent levels of risk and maintaining a diversified portfolio, subject to White Mountains’s investment guidelines and various regulatory restrictions. Under White Mountains’s investment philosophy, each dollar of after-tax investment income or investment gains (realized or unrealized) is valued equally. White Mountains’s investment philosophy also incorporates Environmental, Social and Governance (“ESG”) considerations. For investment assets actively managed by WM Advisors, thorough credit risk assessments are conducted, utilizing Nationally-Recognized Statistical Rating Organizations research and ratings. For actively managed investment assets sub-advised to third-party registered investment adviser specializing in natural catastrophe insurance-linked securities (“ILS”). On May 31, 2019,managers, White Mountains acquired a 30.0% limited partnership interest in Elementum for $55 million (the “Elementum Transaction”). In January 2021, only utilizes managers who incorporate ESG factors into their investment processes.
White Mountains investedmaintains a fixed income portfolio that consists primarily of high-quality, short-duration, fixed maturity investments and short-term investments. White Mountains invests in fixed maturity investments that are attractively priced in relation to their investment risks and actively manages the average duration of the fixed income portfolio. As of December 31, 2023, the fixed income portfolio duration, including short-term investments, was 1.9 years. White Mountains has established relationships with select third-party registered investment advisers to manage a portion of its fixed income portfolio. See “Portfolio Composition” on page 64.
White Mountains maintains an additional $2 millionequity portfolio that consists of common equity securities, its investment in Elementum. White Mountains’s non-controlling equity interest in Elementum is accounted for at fair value withinMediaAlpha and other long-term investments. As of December 31, 20212023, White Mountains’s portfolio of common equity securities consists of international listed equity funds and 2020, the fair valuepassive exchange traded funds (“ETFs”). White Mountains’s other long-term investments consist primarily of unconsolidated entities, Kudu’s Participation Contracts, private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits, ILS funds and private debt instruments.

DISCONTINUED OPERATIONS

NSM

On August 1, 2022, White Mountains Holdings (Luxembourg) S.à r.l. (“WTM Holdings Seller”), an indirect wholly-owned subsidiary of White Mountains’sMountains, completed the previously announced sale of White Mountains Catskill Holdings, Inc. and NSM Insurance HoldCo, LLC (“NSM”) (collectively with White Mountains Catskill Holdings, Inc., the “NSM Group”) to Riser Merger Sub, Inc., an affiliate of The Carlyle Group Inc. (the “NSM Transaction”), pursuant to the terms of the securities purchase agreement, dated May 9, 2022. See Note 2 — “Significant Transactions” on page F-17. NSM is a full-service MGA and program administrator with delegated binding authorities for specialty property and casualty insurance.
As a result of the NSM Transaction, the assets and liabilities of NSM Group have been presented in the balance sheet as held for sale for periods prior to the closing of the transaction, and the results of operations for NSM Group have been classified as discontinued operations in the statements of operations and comprehensive income through the closing of the transaction. Prior period amounts have been reclassified to conform to the current period’s presentation. See Note 20 — “Held for Sale and Discontinued Operations” on page F-70.

REGULATION

United States

Insurance Regulation
BAM is subject to regulation and supervision in New York and each of the states where it is licensed to conduct business. Generally, state regulatory authorities have broad supervisory and administrative powers over such matters as licenses, standards of solvency, premium rates, policy forms, investments, statutory deposits, methods of accounting, form and content of financial statements, claims reserves and LAE liabilities, reinsurance, minimum capital and surplus requirements, dividends and other distributions to shareholders, annual and other report filings and other market conduct. In general, such regulation is for the protection of policyholders rather than shareholders. White Mountains believes that BAM is in compliance with all applicable laws and regulations pertaining to its business that would have a material effect on its financial condition and results of operations in the event of non-compliance.
Bamboo is licensed in all 50 states as an insurance producer and is registered as a managing general agent in California.White Mountains believes that Bamboo is in compliance with all applicable laws and regulations pertaining to its business that would have a material effect on its financial condition or results of operations in the event of non-compliance.
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State Accreditation and Monitoring
State insurance laws and regulations include numerous provisions governing marketplace activities of insurers, including provisions governing marketing and sales practices, policyholder services, claims management and complaint handling. State regulatory authorities generally test and enforce these provisions through periodic market conduct examinations. The NYDFS conducts periodic examinations of insurance companies domiciled in New York, usually at five-year intervals. In 2019, the NYDFS commenced and in early 2020 completed its examination of BAM and issued a Report on Examination of BAM for the period ending December 31, 2018.The report did not note any significant regulatory issues concerning BAM.

Risk Limits
New York Insurance Law establishes single and aggregate risk limits for financial guaranty insurers. Single risk limits for financial guaranty insurers are applicable to all obligations issued by a single entity and backed by a single revenue source. Insurance on municipal obligations is subject to a limit where the insured average annual debt service for a single risk, net of qualifying reinsurance and collateral, may not exceed 10% of policyholders' surplus and contingency reserves. In addition, the insured principal of municipal obligations attributable to any single risk, net of qualifying reinsurance and collateral, is limited to 75% of policyholders' surplus and contingency reserves.
New York Insurance Law also establishes aggregate risk limits on the basis of total outstanding principal and interest in Elementum totaled $45 millionof guaranteed obligations insured net of qualifying reinsurance and $55 million.collateral (the “Aggregate Net Liability”), compared to the sum of the insurer’s policyholders’ surplus and contingency reserves. Under these limits, policyholders' surplus and contingency reserves for municipal obligations must not be less than 0.33% of the Aggregate Net Liability. If a financial guaranty insurer fails to comply with single or aggregate risk limits, the NYDFS has broad discretion to order the insurer to cease new business originations. As of December 31, 20212023, BAM was in compliance with the single and 2020, White Mountains had a 29.7% and a 28.9% limited partnership interest in Elementum.
Elementum manages separate accounts and pooled investment vehicles across various ILS sectors, including catastrophe bonds, collateralized reinsurance investments and industry loss warranties, on behalf of third-party clients. As part of the Elementum Transaction, White Mountains also committed to invest $50 million in ILS funds managed by Elementum, which was fully invested as of December 31, 2020. As of December 31, 2021 and 2020, White Mountains had $52 million and $51 million invested in the ILS funds managed by Elementum.aggregate risk limits.

Distributions
No payment of principal or interest on the BAM Surplus Notes may be made without the approval of the NYDFS.

Contingency Reserves
New York Insurance Law and the insurance laws of other non-domiciliary states in which BAM is licensed require BAM to maintain a contingency reserve. The contingency reserve is established to protect policyholders against the effect of adverse economic developments or other unforeseen circumstances. BAM records a contingency reserve in accordance with New York Insurance Law and calculates and monitors contingency reserves required by other non-domiciliary states in which it is licensed.

Cybersecurity
The NYDFS’s cybersecurity regulation (“Part 500”) requires financial services institutions, including BAM, to establish and maintain a cybersecurity program designed to protect consumers’ private data and the confidentiality, integrity and availability of the institution’s information systems.

Investments
BAM is subject to state laws and regulations that require investment portfolio diversification and that dictate the quality, quantity and general types of investments it may hold. Non-compliance may cause non-conforming investments to be non-admitted when measuring statutory surplus and, in some instances, may require divestiture.

Holding Company Structure
Regulations under certain state insurance holding company acts contain reporting requirements relating to the capital structure, ownership, financial condition and general business operations of insurance entities. These regulations also contain special reporting and prior approval requirements with respect to certain transactions among affiliates. Although BAM has no ownership relationship with HG Re or HG Global, BAM agreed with the NYDFS to submit any agreements, or amendments thereto, among BAM and HG Re, HG Global and their affiliated entities or controlling persons to the NYDFS as if they were subject to Article 15 of the New York Insurance Law, which relates to transactions with holding companies.

Federal Regulation
Although the federal government does not directly regulate insurance businesses, federal legislation and administrative policies impact the industry. In addition, legislation has been introduced that, if enacted, could result in the federal government assuming a more direct role in the regulation of the insurance industry. Notably, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) created the Federal Insurance Office (“FIO”) within the Treasury Department, which is responsible for gathering information and monitoring the insurance industry to identify gaps in the regulation of insurers that could contribute to a systemic crisis in the insurance industry or U.S. financial system.

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Investment Regulation
Kudu Investment Holdings, LLC, a subsidiary of Kudu, is an investment adviser that is registered with the SEC under Section 203 of the United States Investment Advisers Act of 1940.

Bermuda

Insurance Regulation
The Insurance Act 1978 of Bermuda and related regulations, as amended (the “Insurance Act”), regulates the insurance
business of HG Re, a special purpose insurer, GAIL, Ark’s wholly-owned Class 4 insurance and reinsurance company, Outrigger Re Ltd., a special purpose insurer, and Bamboo Captive, Bamboo’s wholly-owned Class 2 captive insurer. Outrigger Re Ltd. is also registered as a segregated accounts company under the Bermuda Segregated Accounts Companies Act 2000, as amended (the “SAC Act”). The Insurance Act provides that no person may carry on any insurance business in or from within Bermuda unless registered as an insurer under the Insurance Act by the Bermuda Monetary Authority (“BMA”). The BMA, in deciding whether to grant registration, has broad discretion to act as it thinks fit in the public interest. From time to time, HG Re, GAIL and Outrigger Re Ltd. may apply for, and be granted, certain modifications to, or exemptions from, regulatory requirements, which may otherwise apply to them.
The Insurance Act imposes solvency and liquidity standards as well as auditing and reporting requirements and confers on the BMA powers to supervise, investigate and intervene in the affairs of insurance companies. The SAC Act stipulates its own solvency test for the declaration of dividends and distributions for segregated accounts, which takes into account the solvency of each segregated account individually, rather than the solvency of the company itself.

Classification
GAIL is registered as a Class 4 insurer. Class 4 insurers carry on general insurance business including excess liability business or property catastrophe, marine & energy, casualty and specialty reinsurance business and have a total statutory capital and surplus of not less than $100 million.
As special purpose insurers, HG Re and Outrigger Re Ltd. are insurers that carry on special purpose business. Special purpose business under the Insurance Act is insurance business under which an insurer fully collateralizes its liabilities to the insured persons through (i) the proceeds of any one or more of (a) a debt issuance where the repayment rights of the providers of such debt are subordinated to the rights of the person insured, or (b) some other financing mechanism approved by the BMA; (ii) cash; and (iii) time deposits. Special purpose insurers may be registered to carry on either restricted special purpose business or unrestricted special purpose business. Restricted special purpose business is special purpose business conducted between a special purpose insurer and specific insureds approved by the BMA. Unrestricted special purpose business means special purpose business conducted by a special purpose insurer with any insured. Both HG Re and Outrigger Re Ltd. are only able to carry on restricted purpose business.

Capital and Solvency Return
As a Class 4 insurer, GAIL is required to file, on an annual basis, a capital and solvency return in respect of its general business, which currently includes, among other items, a statutory economic balance sheet, a schedule of risk management, a catastrophe risk return, a schedule of loss triangles or reconciliation of net loss reserves (where applicable), a schedule of eligible capital and the Enhanced Capital Requirement (“ECR”) as calculated by the Bermuda Solvency and Capital Requirement (“BSCR”) model (or an approved internal model). The BSCR is a mathematical model designed to give the BMA robust methods for determining an insurer’s capital adequacy. Underlying the BSCR is the belief that all insurers should operate on an ongoing basis with a view to maintaining their capital at a prudent level in excess of the minimum solvency margin otherwise prescribed under the Insurance Act. The 2023 BSCR must be filed with the BMA before April 30, 2024; at this time, we believe GAIL will exceed the minimum amount required to be maintained under Bermuda law.
As special purpose insurers, HG Re and Outrigger Re Ltd. are also required to file annually with the BMA a statutory return which includes, among other matters, the statutory financial statements, a statement of control and changes of control, a solvency certificate, an annual statutory declaration, an own-risk assessment, alternative capital arrangements report, cyber risk management report and compliance with sanctions report.


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Financial Condition Report
As a Class 4 insurer, GAIL is required to prepare and publish a financial condition report (“FCR”), which provides, among other things, details of measures governing the business operations, corporate governance framework and solvency and financial performance of the insurer/insurance group. The FCR will be made available in accordance with the requirements of the Insurance Act.
As special purpose insurers, HG Re and Outrigger Re Ltd. are not subject to this requirement.

Minimum Solvency Margin
As a general business insurer, GAIL is required to maintain statutory assets in excess of its statutory liabilities by an amount, equal to or greater than the prescribed minimum solvency margin. The minimum solvency margin that must be maintained by a Class 4 insurer is the greater of (i) $100 million, (ii) 50% of net premiums written (with a credit for reinsurance ceded not exceeding 25% of gross premiums), (iii) 15% of net aggregate loss and loss expense provisions and other insurance reserves, or (iv) 25% of the ECR, which is established by reference to the BSCR model.
As special purpose insurers, HG Re and Outrigger Re Ltd. must maintain a minimum solvency margin whereby their special purpose business assets must exceed their special purpose business liabilities by at least $1.

Enhanced Capital Requirement
As a Class 4 insurer, GAIL is required to maintain its available statutory economic capital and surplus at a level at least equal to its ECR. In either case, the ECR shall at all times equal or exceed the insurer’s minimum solvency margin and may be adjusted in circumstances where the BMA concludes that the insurer’s risk profile deviates significantly from the assumptions underlying its ECR or the insurer’s assessment of its risk management policies and practices used to calculate the ECR applicable to it. While not specifically referred to in the Insurance Act, the BMA has also established a target capital level for each Class 4 insurer equal to 120% of the respective ECR. While a Class 4 insurer is not currently required to maintain its statutory economic capital and surplus at this level, the target capital level serves as an early warning tool for the BMA and failure to maintain statutory capital at least equal to the target capital level will likely result in increased BMA regulatory oversight.
As special purpose insurers, HG Re and Outrigger Re Ltd. are not subject to this requirement.

Minimum Liquidity Ratio
The Insurance Act provides a minimum liquidity ratio for general business insurers such as GAIL. An insurer engaged in general business is required to maintain the value of its relevant assets at not less than 75% of the amount of its relevant liabilities. Relevant assets include, but are not limited to, cash and time deposits, quoted investments, unquoted bonds and debentures, investment income due and accrued, accounts and premiums receivable, insurance and reinsurance balances receivable and funds held by ceding reinsurers. Relevant liabilities include, but are not limited to, general business insurance reserves and total other liabilities less deferred income tax and sundry liabilities, letters of credit and guarantees.
As special purpose insurers, HG Re and Outrigger Re Ltd. are not subject to this requirement.

Eligible Capital
As a Class 4 insurer, GAIL must maintain available capital in accordance with a “three-tiered capital system” to enable the BMA to better assess the quality of an insurer’s capital resources. All capital instruments are classified as either basic or ancillary capital, which in turn are classified into one of three tiers (Tier 1, Tier 2 and Tier 3) based on their “loss absorbency” characteristics. Eligibility limits are then applied to each tier in determining the amounts eligible to cover regulatory capital requirement levels. The highest capital is classified as Tier 1 capital and lesser quality capital is classified as either Tier 2 capital or Tier 3 capital. Under this regime, not more than certain specified percentages of Tier 1, Tier 2 and Tier 3 capital may be used to satisfy the Class 4 insurers' minimum solvency margin, ECR requirements and target capital level.
As special purpose insurers, HG Re and Outrigger Re Ltd. are not subject to this requirement.


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Restrictions on Dividends, Distributions and Reductions of Capital
As a Class 4 insurer, GAIL is prohibited from declaring or paying any dividends if in breach of the required minimum solvency margin or minimum liquidity ratio (the “Relevant Margins”) or if the declaration or payment of such dividend would cause the insurer to fail to meet the Relevant Margins. Further, Class 4 insurers are prohibited from declaring or paying in any financial year dividends of more than 25% of its total statutory capital and surplus (as shown on its previous financial year’s statutory balance sheet) unless it files (at least seven days before payment of such dividends) with the BMA an affidavit stating that it will continue to meet its Relevant Margins. Class 4 insurers must obtain the BMA’s prior approval for a reduction by 15% or more of the total statutory capital as set forth in its previous year’s financial statements. These restrictions on declaring or paying dividends and distributions under the Insurance Act are in addition to the solvency requirements under the Companies Act 1981 of Bermuda, as amended (the “Companies Act”). See “LIQUIDITY AND CAPITAL RESOURCES — Dividend Capacity” on page 67 for further discussion.
As special purpose insurers, HG Re and Outrigger Re Ltd. are not required to obtain the BMA’s prior approval in connection with any reduction of total statutory capital, but are prohibited from declaring or paying a dividend if they are in breach of their minimum solvency margin or if the declaration or payment of such dividend would cause such a breach. As a segregated account, the solvency test for the declaration of dividends and distributions is evaluated based upon the solvency of WM Outrigger Re, rather than the solvency of Outrigger Re Ltd.

Insurance Code of Conduct and Insurance Sector Operational Cyber Risk Management Code of Conduct
All Bermuda insurers are required to comply with the BMA’s Insurance Code of Conduct, which establishes duties, requirements and standards to be complied with to ensure each insurer implements sound corporate governance, risk management and internal controls. Failure to comply with these requirements will be a factor taken into account by the BMA in determining whether an insurer is conducting its business in a sound and prudent manner under the Insurance Act and, in the case of GAIL, in calculating the operational risk charge applicable in accordance with the insurer's BSCR model (or an approved internal model).
All Bermuda insurers are also required to comply with the BMA’s Insurance Sector Operational Cyber Risk Management Code of Conduct, which establishes duties, requirements and standards to be complied with by each insurer in relation to operational cyber risk management.

Powers of Investigation, Intervention and Obtaining Information
The BMA has certain powers of investigation and intervention relating to insurers and their holding companies, subsidiaries and other affiliates, which it may exercise in the interest of such insurer’s policyholders or if there is any risk of insolvency or of a breach of the Insurance Act or the insurer’s license conditions. The BMA may cancel an insurer’s registration on certain grounds specified in the Insurance Act.

Notification of Cyber Reporting Events
Every insurer subject to the Insurance Act is required to notify the BMA where the insurer has reason to believe that a Cyber Reporting Event has occurred. Within 14 days of such notification, the insurer must also furnish the BMA with a written report setting out all of the particulars of the Cyber Reporting Event that are available to it. A Cyber Reporting Event includes any act that results in the unauthorized access to, disruption, or misuse of electronic systems or information stored on such systems of an insurer, including breach of security leading to the loss or unlawful destruction or unauthorized disclosure of or access to such systems or information where there is a likelihood of an adverse impact to policyholders, clients or the insurer’s insurance business, or a similar event for which notice is required to be provided to a regulatory body or government agency.

Policyholder Priority
In the event of a liquidation or winding up of an insurer, policyholders’ liabilities receive payment ahead of general unsecured creditors. Subject to the prior payment of preferential debts under the Employment Act 2000 and the Companies Act, the insurance debts of an insurer must be paid in priority to all other unsecured debts of the insurer.

Certain Other Bermuda Law Considerations
The Company is an exempted company incorporated and organized under the Companies Act. As a result, the Company is required to comply with the provisions of the Companies Act regulating the payment of dividends and making of distributions from contributed surplus. A company is prohibited from declaring or paying a dividend, or making a distribution out of contributed surplus, if there are reasonable grounds for believing that:

(1) the company is, or would after the payment be, unable to pay its liabilities as they become due; or
(2) the realizable value of the company’s assets would thereby be less than its liabilities.

In addition, the Companies Act regulates return of capital, reduction of capital and any purchase or redemption of shares by the Company.
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The Economic Substance Act 2018, as amended (“ESA”) impacts every Bermuda registered entity engaged in a “relevant activity,” requiring impacted entities to maintain a substantial economic presence in Bermuda and to satisfy economic substance requirements. Under the ESA, insurance or holding entity activities (both as defined in the ESA and the Economic Substance Regulations 2018, as amended) are relevant activities. To the extent that the ESA applies to any of our Bermuda entities, we are required to demonstrate compliance with economic substance requirements by filing an annual economic substance declaration with the Bermuda Registrar of Companies. Any entity that must satisfy economic substance requirements but fails to do so could face automatic disclosure to competent authorities in the EU of the information filed by the entity with the Bermuda Registrar of Companies in connection with the economic substance requirements. Additionally, a company may also face penalties, restriction or regulation of its business activities and may be struck off as a registered entity in Bermuda for failure to satisfy economic substance requirements. The Company believes it complies with all of the applicable laws and regulations pertaining to economic substance that would have a material effect on its financial condition and results of operations in the event of non-compliance.

Other Operating Businesses

White Mountains has controlling equity interests in various other operating businesses, which are consolidated. As of December 31, 2021,2023, White Mountains reported $100$107 million of total assets, including $16 million of assets held for sale, $63$49 million of total equity (net of intercompany eliminations), including $16 and $9 million of equity associated with an Other Operating Business classified as held for sale, and $12 million of non-controllingnoncontrolling interests related to these businesses. As of December 31, 2020,2022, White Mountains reported $67$154 million of total assets, $39$74 million of total equity (net of intercompany eliminations) and $2$20 million of non-controllingnoncontrolling interests related to these businesses.
White Mountains also has non-controllingnoncontrolling equity interests in various other operating businesses and private debt instruments with various other operating businesses, which are generally accounted for at fair value within other long-term investments. As of December 31, 20212023 and 2020,2022, the fair value of these interests totaled $37$40 million and $52$35 million.

WM AdvisorsBamboo Transaction

AsOn October 19, 2023, White Mountains entered into an agreement and plan of merger (the “Bamboo Merger Agreement”) with Bamboo MGA and John Chu, as the unitholders’ representative. Under the terms of the Bamboo Merger Agreement, White Mountains’s wholly-owned subsidiary, WM Pierce Merger Sub LLC, agreed to merge with and into Bamboo MGA, with Bamboo MGA continuing as the surviving company (the “Bamboo Merger”). Concurrently with the execution of the Bamboo Merger Agreement, certain Bamboo management unitholders agreed to rollover the majority of their existing equity in Bamboo MGA into Bamboo Holdings. White Mountains also agreed to make an equity contribution to Bamboo immediately following the Bamboo Merger (together with the Bamboo Merger and the rollover transactions, the “Bamboo Transaction”).
On January 2, 2024, White Mountains closed the Bamboo Transaction in accordance with the terms of the Bamboo Merger Agreement, investing $297 million in equity into Bamboo, which included a contribution of $36 million to retire Bamboo’s legacy credit facility and a contribution of $20 million of primary capital. The consideration is subject to customary purchase price adjustments. At closing, White Mountains owned 72.8% of Bamboo on a basic shares outstanding basis (63.7% on a fully-diluted/fully-converted basis, taking account of management’s equity incentives). At closing, 16.1% of basic shares outstanding are owned by Bamboo management (26.6% on a fully-diluted/fully-converted basis).
Bamboo is a capital-light, tech- and data-enabled insurance distribution platform providing homeowners’ insurance and related products to the residential property market in California. Bamboo operates primarily through Bamboo MGA, its full-service MGA business, where the company manages all aspects of the placement process on behalf of its fronting and reinsurance partners, including product development, marketing, underwriting, policy issuance and claims oversight, and it earns commissions based on the volume and profitability of the insurance that it places. It offers both admitted and non-admitted insurance products. Bamboo also operates two separate but integrated business models: (i) a retail agency, within Bamboo MGA, offering ancillary products (e.g., flood, earthquake) on behalf of third parties and (ii) Bamboo Captive, a Bermuda-domiciled captive reinsurer that participates in the underwriting risk of Bamboo’s MGA programs to align interests with reinsurance partners. For the fourth quarter and year ended December 31, 2021, WM Advisors2023, Bamboo had $75 million and $215 million of managed and/or provided oversightpremium, up from $24 million and administration$86 million for substantially all ofthe fourth quarter and year ended December 31, 2022. These periods were prior to White Mountains’s fixed maturity investments, short-term investments, common equity securities and other long-term investments, withownership of Bamboo. Managed premium represents the exception of BAM’s investment portfolio, which is managedtotal premium placed by BAM and sub-advised to an outside third-party registered investment manager.Bamboo during the period.

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INVESTMENTS

White Mountains’s investment philosophy is to maximize long-term, after-tax total returns while taking prudent levels of risk and maintaining a diversified portfolio, subject to White Mountains’s investment guidelines and various regulatory restrictions. Under White Mountains’s investment philosophy, each dollar of after-tax investment income or investment gains (realized or unrealized) is valued equally. White Mountains’Mountains’s investment philosophy also incorporates Environmental, Social and Governance (“ESG”) considerations. For investment assets actively managed by WM Advisors, thorough credit risk assessments are conducted, utilizing Nationally-Recognized Statistical Rating Organizations’Organizations research and ratings. For actively managed investment assets sub-advised to third-party registered investment managers, WM AdvisorsWhite Mountains only utilizes managers who incorporate ESG factors into their investment processes.
White Mountains maintains a fixed income portfolio that consists primarily of high-quality, short-duration, fixed maturity investments and short-term investments. White Mountains invests in fixed maturity investments that are attractively priced in relation to their investment risks and actively manages the average duration of the fixed income portfolio. As of December 31, 2021,2023, the fixed income portfolio duration, including short-term investments, was 2.61.9 years. White Mountains has established relationships with select third-party registered investment advisers to manage a portion of its fixed income portfolio. See “Portfolio Composition” on page 62.64.
White Mountains maintains an equity portfolio that consists of common equity securities, its investment in MediaAlpha and other long-term investments. During the second halfAs of 2020, White Mountains liquidated its portfolio of common equity securities in anticipation of funding the Ark Transaction. Following the Ark Transaction,December 31, 2023, White Mountains’s portfolio of common equity securities consists of international listed equity funds held in the Ark portfolio.and passive exchange traded funds (“ETFs”). White Mountains’s other long-term investments consist primarily of unconsolidated entities, including Kudu’s Participation Contracts, private equity funds and hedge funds, a bank loan fund, private equity funds, hedge funds, Lloyd’s trust deposits, ILS funds and private debt instruments.

DISCONTINUED OPERATIONS

NSM

On August 1, 2022, White Mountains Holdings (Luxembourg) S.à r.l. (“WTM Holdings Seller”), an indirect wholly-owned subsidiary of White Mountains, completed the previously announced sale of White Mountains Catskill Holdings, Inc. and NSM Insurance HoldCo, LLC (“NSM”) (collectively with White Mountains Catskill Holdings, Inc., the “NSM Group”) to Riser Merger Sub, Inc., an affiliate of The Carlyle Group Inc. (the “NSM Transaction”), pursuant to the terms of the securities purchase agreement, dated May 9, 2022. See Note 2 — “Significant Transactions” on page F-17. NSM is a full-service MGA and program administrator with delegated binding authorities for specialty property and casualty insurance.
As a result of the NSM Transaction, the assets and liabilities of NSM Group have been presented in the balance sheet as held for sale for periods prior to the closing of the transaction, and the results of operations for NSM Group have been classified as discontinued operations in the statements of operations and comprehensive income through the closing of the transaction. Prior period amounts have been reclassified to conform to the current period’s presentation. See Note 20 — “Held for Sale and Discontinued Operations” on page F-70.

REGULATION

United States

Insurance Regulation
BAM is subject to regulation and supervision in New York and each of the states where it is licensed to conduct business. Generally, state regulatory authorities have broad supervisory and administrative powers over such matters as licenses, standards of solvency, premium rates, policy forms, investments, statutory deposits, methods of accounting, form and content of financial statements, claims reserves and LAE liabilities, reinsurance, minimum capital and surplus requirements, dividends and other distributions to shareholders, annual and other report filings and other market conduct. In general, such regulation is for the protection of policyholders rather than shareholders. White Mountains believes that BAM is in compliance with all applicable laws and regulations pertaining to its business that would have a material effect on its financial condition and results of operations in the event of non-compliance.
NSM, through its subsidiaries,Bamboo is licensed in all 50 states as an insurance producer and the District of Columbia. is registered as a managing general agent in California.White Mountains believes NSMthat Bamboo is in compliance with all applicable laws and regulations pertaining to its business that would have a material effect on its financial condition andor results of operations in the event of non-compliance.
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State Accreditation and Monitoring
State insurance laws and regulations include numerous provisions governing marketplace activities of insurers, including provisions governing marketing and sales practices, policyholder services, claims management and complaint handling. State regulatory authorities generally test and enforce these provisions through periodic market conduct examinations. The NYDFS conducts periodic examinations of insurance companies domiciled in New York, usually at five-year intervals.In 2019, the NYDFS commenced and in early 2020 completed its examination of BAM and issued a Report on Examination of BAM for the period ending December 31, 2018. The reportsreport did not note any significant regulatory issues concerning BAM.

Risk Limits
New York Insurance Law establishes single and aggregate risk limits for financial guaranty insurers. Single risk limits for financial guaranty insurers are applicable to all obligations issued by a single entity and backed by a single revenue source. Insurance on municipal obligations is also subject to a limit where the insured average annual debt service for a single risk, net of qualifying reinsurance and collateral, may not exceed 10% of policyholders' surplus and contingency reserves. In addition, the insured principal of municipal obligations attributable to any single risk, net of qualifying reinsurance and collateral, is limited to 75% of policyholders' surplus and contingency reserves.
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The New York Insurance Law also establishes aggregate risk limits on the basis of total outstanding principal and interest of guaranteed obligations insured net of qualifying reinsurance and collateral (the “Aggregate Net Liability”), compared to the sum of the insurer’s policyholders’ surplus and contingency reserves. Under these limits, policyholders' surplus and contingency reserves for municipal obligations must not be less than 0.33% of the Aggregate Net Liability. If a financial guaranty insurer fails to comply with single or aggregate risk limits, the NYDFS has broad discretion to order the insurer to cease new business originations. As of December 31, 2021,2023, BAM was in compliance with the single and aggregate risk limits.

Distributions
No payment of principal or interest on the BAM Surplus Notes may be made without the approval of the NYDFS.

Contingency Reserves
The New York Insurance Law and the insurance laws of other non-domiciliary states in which itBAM is licensed require BAM to maintain a contingency reserve. The contingency reserve is a liability established to protect policyholders against the effect of adverse economic developments or other unforeseen circumstances. BAM records a contingency reserve in accordance with New York Insurance Law and calculates and monitors contingency reserves required by other non-domiciliary states in which it is licensed.

Cybersecurity
The NYDFS’s cybersecurity regulation (“Part 500”) requires financial services institutions, including BAM, and NSM, to establish and maintain a cybersecurity program designed to protect consumers’ private data and the confidentiality, integrity and availability of the institution’s information systems.
In 2018, California enacted the California Consumer Privacy Act (the “CCPA”), which broadly regulates the sale of California residents’ personal information and grants California residents certain rights to, among other things, access and delete data about them in certain circumstances. In November 2020, California augmented the CCPA by enacting the California Privacy Rights Act (the “CPRA”). Among other things, the CPRA grants consumers the right to correct inaccurate data about them and creates a new enforcement agency. Compliance with the CCPA and the CPRA, or similar laws in other jurisdictions, may increase the cost of providing services, including those provided by NSM.

Investments
BAM is subject to state laws and regulations that require investment portfolio diversification and that dictate the quality, quantity and general types of investments it may hold. Non-compliance may cause non-conforming investments to be non-admitted when measuring statutory surplus and, in some instances, may require divestiture.

Holding Company Structure
Regulations under certain state insurance holding company acts contain reporting requirements relating to the capital structure, ownership, financial condition and general business operations of insurance entities. These regulations also contain special reporting and prior approval requirements with respect to certain transactions among affiliates. The domiciliary states of insurance entities impose regulatory application and approval requirements on acquisitions that may be deemed to confer control. In some states as little as 5% may be deemed to confer control, and the application process for approval can be extensive and time consuming. Although BAM has no ownership relationship with HG Re or HG Global, BAM agreed with the NYDFS to submit any agreements, or amendments thereto, among BAM and HG Re, HG Global and their affiliated entities or controlling persons to the NYDFS as if they were subject to Article 15 of the New York Insurance Law, which relates to transactions with holding companies.

Federal Regulation
Although the federal government does not directly regulate the insurance business,businesses, federal legislation and administrative policies impact the industry. In addition, legislation has been introduced that, if enacted, could result in the federal government assuming a more direct role in the regulation of the insurance industry. Notably, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) created the Federal Insurance Office (“FIO”) within the Treasury Department, which is responsible for gathering information and monitoring the insurance industry to identify gaps in the regulation of insurers that could contribute to a systemic crisis in the insurance industry or U.S. financial system.

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Premium Accounts Held in TrustInvestment Regulation
NSM maintains approximately 74 trust accounts in order to complyKudu Investment Holdings, LLC, a subsidiary of Kudu, is an investment adviser that is registered with fiduciary requirementsthe SEC under U.S. state and U.K. Financial Conduct Authority (the “FCA”) insurance laws and regulations relating to premium trust accounts. Under such laws, insurance agencies that do not make immediate remittances to counterparties (such as insurance companies, clients or other producers to which premium, commissions or other amounts are due from time to time) must segregate funds owed to such counterparties and these funds must be held in trust forSection 203 of the insurance company, client or other relevant third-party payee. NSM’s useUnited States Investment Advisers Act of trust accounts is routinely subject to audits by carrier partners and other external auditors. As of December 31, 2021, NSM believes that it is in compliance with all applicable laws and regulations pertaining to premium trust accounts that would have a material effect on its financial condition and results of operations in the event of non-compliance.1940.

Bermuda

Insurance Regulation
The Insurance Act 1978 of Bermuda and related regulations, as amended (the “Insurance Act”), regulates the insurance
business of HG Re, a special purpose insurer, (“SPI”), and GAIL, Ark’s wholly-owned Class 4 insurance and reinsurance company.company, Outrigger Re Ltd., a special purpose insurer, and Bamboo Captive, Bamboo’s wholly-owned Class 2 captive insurer. Outrigger Re Ltd. is also registered as a segregated accounts company under the Bermuda Segregated Accounts Companies Act 2000, as amended (the “SAC Act”). The Insurance Act provides that no person may carry on any insurance business in or from within Bermuda unless registered as an insurer under the Insurance Act by the Bermuda Monetary Authority (“BMA”). The BMA, in deciding whether to grant registration, has broad discretion to act as it thinks fit in the public interest. From time to time, HG Re, GAIL and GAILOutrigger Re Ltd. may apply for, and be granted, certain modifications to, or exemptions from, regulatory requirements, which may otherwise apply to them.
The Insurance Act imposes solvency and liquidity standards as well as auditing and reporting requirements and confers on the BMA powers to supervise, investigate and intervene in the affairs of insurance companies.
The European Parliament recognizes Bermuda’s regulatory regime as achieving Solvency II equivalenceSAC Act stipulates its own solvency test for its commercial insurers. Equivalence between Bermuda's regulatory regimethe declaration of dividends and distributions for segregated accounts, which takes into account the U.K.'s prudential regime has been automatically maintained followingsolvency of each segregated account individually, rather than the expirysolvency of the U.K.'s transition period for leaving the EU on January 1, 2021.company itself.

Classification
GAIL is registered as a Class 4 insurer. Class 4 insurers carry on general insurance business including excess liability business or property catastrophe, marine & energy, casualty and specialty reinsurance business and have a total statutory capital and surplus of not less than $100 million.
As special purpose insurers, HG Re and GAIL
As an SPI, HGOutrigger Re is an insurerLtd. are insurers that carriescarry on special purpose business. Special purpose business under the Insurance Act is insurance business under which an insurer fully fundscollateralizes its liabilities to the insured persons through (i) the proceeds of any one or more of (a) a debt issuance where the repayment rights of the providers of such debt are subordinated to the rights of the person insured, or (b) some other financing mechanism approved by the BMA; (ii) cash; and (iii) time deposits. An SPISpecial purpose insurers may be registered to carry on either restricted special purpose business or unrestricted special purpose business. Restricted special purpose business is special purpose business conducted between an SPIa special purpose insurer and specific insureds approved by the BMA. Unrestricted special purpose business means special purpose business conducted by an SPIa special purpose insurer with any insured. Both HG Re isand Outrigger Re Ltd. are only able to carry on restricted purpose business.
GAIL is registered as a Class 4 insurer where (i) it has at the time of its application for registration, or will have before it carries on insurance business, a total statutory capital and surplus of not less than $100 million; and (ii) it intends to carry on general insurance business including excess liability business or property catastrophe, marine & energy, casualty and specialty reinsurance business.

Capital and Solvency Return
As a Class 4 insurer, GAIL is required to file, on an annual basis, a capital and solvency return in respect of theirits general business, which currently includes, among other items, a statutory economic balance sheet, a schedule of risk management, a catastrophe risk return, a schedule of loss triangles or reconciliation of net loss reserves (where applicable), a schedule of eligible capital and the Enhanced Capital Requirement (“ECR”) as calculated by the Bermuda Solvency and Capital Requirement (“BSCR”) model (or an approved internal model). The BSCR is a mathematical model designed to give the BMA robust methods for determining an insurer’s capital adequacy. Underlying the BSCR is the belief that all insurers should operate on an ongoing basis with a view to maintaining their capital at a prudent level in excess of the minimum solvency margin otherwise prescribed under the Insurance Act. The 20212023 BSCR must be filed with the BMA before April 30, 2022;2024; at this time, we believe GAIL will exceed the minimum amount required to be maintained under Bermuda law.
As an SPI,special purpose insurers, HG Re isand Outrigger Re Ltd. are also required to file annually file with the BMA a statutory return which includes, among other matters, the statutory financial statements, a statement of control and changes of control, a solvency certificate, an annual statutory declaration, an own-risk assessment, alternative capital arrangements report, cyber risk management report and compliance with sanctions report.


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Financial Condition Report
As a Class 4 insurer, GAIL is required to prepare and publish a financial condition report (“FCR”), which provides, among other things, details of measures governing the business operations, corporate governance framework and solvency and financial performance of the insurer/insurance group. The FCR will be made available in accordance with the requirements of the Insurance Act.
As an SPI,special purpose insurers, HG Re isand Outrigger Re Ltd. are not subject to this requirement.

Minimum Solvency Margin
AAs a general business insurer’sinsurer, GAIL is required to maintain statutory assets must exceedin excess of its statutory liabilities by an amount, equal to or greater than the prescribed minimum solvency margin, which varies with the category of its registration.margin. The minimum solvency margin that must be maintained by a Class 4 insurer is the greater of (i) $100 million, (ii) 50% of net premiums written (with a credit for reinsurance ceded not exceeding 25% of gross premiums), (iii) 15% of net aggregate loss and loss expense provisions and other insurance reserves, or (iv) 25% of the ECR, which is established by reference to the BSCR model.
TheAs special purpose insurers, HG Re and Outrigger Re Ltd. must maintain a minimum solvency margin that must be maintained by an SPI is that the value of thewhereby their special purpose business assets must exceed itstheir special purpose business liabilities by at least $1.00.$1.

Enhanced Capital Requirement
As a Class 4 insurer, GAIL is required to maintain its available statutory economic capital and surplus at a level at least equal to its ECR. In either case, the ECR shall at all times equal or exceed the insurer’s minimum solvency margin and may be adjusted in circumstances where the BMA concludes that the insurer’s risk profile deviates significantly from the assumptions underlying its ECR or the insurer’s assessment of its risk management policies and practices used to calculate the ECR applicable to it. While not specifically referred to in the Insurance Act, the BMA has also established a target capital level for each Class 4 insurer equal to 120% of the respective ECR. While a Class 4 insurer is not currently required to maintain its statutory economic capital and surplus at this level, the target capital level serves as an early warning tool for the BMA and failure to maintain statutory capital at least equal to the target capital level will likely result in increased BMA regulatory oversight.
As an SPI,special purpose insurers, HG Re isand Outrigger Re Ltd. are not subject to this requirement.

Minimum Liquidity Ratio
The Insurance Act provides a minimum liquidity ratio for general business insurers such as GAIL. An insurer engaged in general business is required to maintain the value of its relevant assets at not less than 75% of the amount of its relevant liabilities. Relevant assets include, but are not limited to, cash and time deposits, quoted investments, unquoted bonds and debentures, investment income due and accrued, accounts and premiums receivable, insurance and reinsurance balances receivable and funds held by ceding reinsurers. Relevant liabilities include, but are not limited to, general business insurance reserves and total other liabilities less deferred income tax and sundry liabilities, letters of credit and guarantees.
As special purpose insurers, HG Re and Outrigger Re Ltd. are not subject to this requirement.

Eligible Capital
As a Class 4 insurer, GAIL must maintain available capital in accordance with a “three tiered“three-tiered capital system” to enable the BMA to better assess the quality of an insurer’s capital resources. All capital instruments are classified as either basic or ancillary capital, which in turn are classified into one of three tiers (Tier 1, Tier 2 and Tier 3) based on their “loss absorbency” characteristics. Eligibility limits are then applied to each tier in determining the amounts eligible to cover regulatory capital requirement levels. The highest capital is classified as Tier 1 capital and lesser quality capital is classified as either Tier 2 capital or Tier 3 capital. Under this regime, not more than certain specified percentages of Tier 1, Tier 2 and Tier 3 capital may be used to satisfy the Class 4 insurers' minimum solvency margin, ECR requirements and target capital level.
As special purpose insurers, HG Re and Outrigger Re Ltd. are not subject to this requirement.


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Restrictions on Dividends, Distributions and Reductions of Capital
As a Class 4 insurer, GAIL is prohibited from declaring or paying any dividends if in breach of the required minimum solvency margin or minimum liquidity ratio (the “Relevant Margins”) or if the declaration or payment of such dividend would cause the insurer to fail to meet the Relevant Margins. Further, Class 4 insurers are prohibited from declaring or paying in any financial year dividends of more than 25% of its total statutory capital and surplus (as shown on its previous financial year’s statutory balance sheet) unless it files (at least seven days before payment of such dividends) with the BMA an affidavit stating that it will continue to meet its Relevant Margins. Class 4 insurers must obtain the BMA’s prior approval for a reduction by 15% or more of the total statutory capital as set forth in its previous year’s financial statements. These restrictions on declaring or paying dividends and distributions under the Insurance Act are in addition to the solvency requirements under the Companies Act 1981 of Bermuda, as amended (the “Companies Act”). See “LIQUIDITY AND CAPITAL RESOURCES — Dividend Capacity” on page 6667 for further discussion.
As an SPI,special purpose insurers, HG Re isand Outrigger Re Ltd. are not required to obtain the BMA’s prior approval in connection with any reduction of total statutory capital, but isare prohibited from declaring or paying a dividend if it isthey are in breach of itstheir minimum solvency margin or if the declaration or payment of such dividend would cause such a breach. As a segregated account, the solvency test for the declaration of dividends and distributions is evaluated based upon the solvency of WM Outrigger Re, rather than the solvency of Outrigger Re Ltd.

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Insurance Code of Conduct and Insurance Sector Operational Cyber Risk Management Code of Conduct
All Bermuda insurers are required to comply with the BMA’s Insurance Code of Conduct, which establishes duties, requirements and standards to be complied with to ensure each insurer implements sound corporate governance, risk management and internal controls. Failure to comply with these requirements will be a factor taken into account by the BMA in determining whether an insurer is conducting its business in a sound and prudent manner under the Insurance Act and, in the case of GAIL, in calculating the operational risk charge applicable in accordance with the insurer's BSCR model (or an approved internal model).
All Bermuda insurers are also required to comply with the BMA’s Insurance Sector Operational Cyber Risk Management Code of Conduct, which establishes duties, requirements and standards to be complied with by each insurer in relation to operational cyber risk management.

Powers of Investigation, Intervention and Obtaining Information
The BMA has certain powers of investigation and intervention relating to insurers and their holding companies, subsidiaries and other affiliates, which it may exercise in the interest of such insurer’s policyholders or if there is any risk of insolvency or of a breach of the Insurance Act or the insurer’s license conditions. The BMA may cancel an insurer’s registration on certain grounds specified in the Insurance Act.

Notification of Cyber Reporting Events
Every insurer subject to the Insurance Act is required to notify the BMA where the insurer has reason to believe that a Cyber Reporting Event has occurred. Within 14 days of such notification, the insurer must also furnish the BMA with a written report setting out all of the particulars of the Cyber Reporting Event that are available to it. A Cyber Reporting Event includes any act that results in the unauthorized access to, disruption, or misuse of electronic systems or information stored on such systems of an insurer, including breach of security leading to the loss or unlawful destruction or unauthorized disclosure of or access to such systems or information where there is a likelihood of an adverse impact to policyholders, clients or the insurer’s insurance business, or a similar event for which notice is required to be provided to a regulatory body or government agency.

Policyholder Priority
In the event of a liquidation or winding up of an insurer, policyholders’ liabilities receive payment ahead of general unsecured creditors. Subject to the prior payment of preferential debts under the Employment Act 2000 and the Companies Act, the insurance debts of an insurer must be paid in priority to all other unsecured debts of the insurer.

Certain Other Bermuda Law Considerations
The Company is an exempted company incorporated and organized under the Companies Act. As a result, the Company is required to comply with the provisions of the Companies Act regulating the payment of dividends and making of distributions from contributed surplus. A company is prohibited from declaring or paying a dividend, or making a distribution out of contributed surplus, if there are reasonable grounds for believing that:

(1) the company is, or would after the payment be, unable to pay its liabilities as they become due; or
(2) the realizable value of the company’s assets would thereby be less than its liabilities.

In addition, the Companies Act regulates return of capital, reduction of capital and any purchase or redemption of shares by the Company.
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The Economic Substance Act 2018, as amended (“ESA”) came into effect in Bermuda in December 2018 and impacts every Bermuda registered entity engaged in a “relevant activity”,activity,” requiring impacted entities to maintain a substantial economic presence in Bermuda and to satisfy economic substance requirements. Under the ESA, insurance or holding entity activities (both as defined in the ESA and the Economic Substance Regulations 2018, as amended) are relevant activities. To the extent that the ESA applies to any of our Bermuda entities, we are required to demonstrate compliance with economic substance requirements by filing an annual economic substance declaration with the Bermuda Registrar of Companies. Any entity that must satisfy economic substance requirements but fails to do so could face automatic disclosure to competent authorities in the EU of the information filed by the entity with the Bermuda Registrar of Companies in connection with the economic substance requirements. Additionally, a company may also face penalties, restriction or regulation of its business activities and may be struck off as a registered entity in Bermuda for failure to satisfy economic substance requirements. The Company believes it complies with all of the applicable laws and regulations pertaining to economic substance that would have a material effect on its financial condition and results of operations in the event of non-compliance.
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Under Bermuda law, exempted companies are companies formed for the purpose of conducting business outside Bermuda from a principal place in Bermuda. As an exempted company, the Company may not, without the express authorization of the Bermuda legislature or under a license granted by the Bermuda Minister of Finance (the “Minister”), participate in various specified business transactions, including

the acquisition or holding of land in Bermuda, except land held by way of lease or tenancy agreement which is required for the Company’s business and held for a term not exceeding 50 years, or which is used to provide accommodation or recreational facilities for the Company’s officers and employees and held with the consent of the Minister, for a term not exceeding 21 years;
the taking of mortgages on land in Bermuda in excess of $50,000;
the acquisition of any bonds or debentures secured by any land in Bermuda, other than certain types of Bermuda government or public authority securities; or
subject to some exceptions, the carrying on of business of any kind in Bermuda for which the Company is not licensed in Bermuda.

Under Bermuda law, non-Bermudians (other than spouses of Bermudians, holders of permanent resident certificates and holders of working resident certificates) may not engage in any gainful occupation in Bermuda without an appropriate governmental work permit. Work permits may be granted or extended by the Bermuda government upon showing that, after proper public advertisement in most cases, no Bermudian (or spouse of a Bermudian or a holder of a permanent resident’s certificate or holder of a working resident’s certificate) is available who meets the minimum standard requirements for the advertised position. A waiver from advertising is automatically granted in respect of any chief executive officer position and other chief officer positions. The employer can also make a request for a waiver from the requirement to advertise in certain other cases, as expressed in the Bermuda government's work permit policies. Currently, each of the Company's Bermuda-based professional employees who requires a work permit has been granted a work permit by the Bermuda government.

United Kingdom

PRA and FCA Regulation
InsurersAs an insurer in the United Kingdom, areArk is dual-regulated by the FCAFinancial Conduct Authority (the “FCA”) and the Prudential Regulation Authority (the “PRA”) (collectively, the “U.K. Regulators”). The PRA currently has ultimate responsibility for the prudential supervision of financial services in the U.K. The FCA has responsibility for market conduct regulation. The U.K. Regulators regulate insurers, insurance intermediaries and Lloyd’s. Both the PRA and FCA have substantial powers of intervention in relation to regulated firms.
NSM and AHU, Ark’s wholly-owned MGA, are authorized and regulated in the United Kingdom principally by the FCA as insurance intermediaries. The FCA has a wide range of rule-making, investigatory and enforcement powers, and monitors compliance with regulatory requirements. The FCA aims (i) to secure an appropriate degree of protection for consumers, (ii) to protect and enhance the integrity of the U.K.’s financial system and (iii) to promote effective competition in the interests of consumers.

Lloyd’s Regulation
Lloyd’s as a whole is authorized by the PRA and regulated by both the FCA and the PRA. Lloyd’s is required to implement certain rules prescribed by the PRA and by the FCA; such rules are to be implemented by Lloyd’s pursuant to its powers under the Lloyd’s Act 1982 relating to the operation of the Lloyd’s market. Lloyd’s prescribes, in respect of its managing agents and corporate and individual members (“Members”), certain minimum standards relating to their management and control, solvency and various other requirements. If it appears to either the PRA or the FCA that either Lloyd’s is not fulfilling its delegated regulatory responsibilities or that managing agents are not complying with the applicable regulatory rules and guidance, the PRA or the FCA may intervene at their discretion.
Lloyd’s permits its Members to underwrite insurance risks through Lloyd’s syndicates. Members of Lloyd’s may participate in a syndicate for one or more underwriting year(s) by providing capital to support the syndicate’s underwriting. All syndicates are managed by Lloyd’s approved managing agents. Managing agents receive fees and profit commissions in respect of the underwriting and administrative services they provide to the syndicates. Lloyd’s prescribes, in respect of its managing agents and Members, certain minimum standards relating to their management and control, solvency and various other requirements.

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General
The operations of ASML, Ark’s wholly-owned Lloyd’s managing agent, are subject to oversight by Lloyd’s, through the Lloyd’s Council. ASML’s business plan for the Syndicates, including maximum stamp capacity, requires annual approval by Lloyd’s. Stamp capacity is a measure of the amount of net premium (premiums written less acquisition costs) that a syndicate is authorized by Lloyd’s to write. Lloyd’s may require changes to any business plan presented to it or additional capital to be provided to support the underwriting plan. Syndicate 4020 commenced underwriting on April 1, 2007 and Syndicate 3902 on January 1, 2017. Lloyd’s approved stamp capacity in 20222024 for Syndicate 4020 is £350£525 million ($474667 million based upon the foreign exchange spot rate as of December 31, 2021)2023), and for Syndicate 3902 is £150£250 million ($203318 million based upon the foreign exchange spot rate as of December 31, 2021)2023). Both Syndicate 4020 and 3902 are supported by capital provided through ACML, Ark’s wholly-owned Lloyd’s Corporate Member.
Ark has deposited certain assets with Lloyd’s to support ACML’s underwriting business at Lloyd’s. Dividends from a Lloyd’s managing agent andor a Member of Lloyd’s can be declared and paid provided the relevant syndicate has sufficient profits available for distribution.distribution subject to Lloyd’s solvency requirements. By entering into a membership agreement with Lloyd’s, ACML has undertaken to comply with all Lloyd’s bye-laws and regulations as well as the provisions of the Lloyd’s Acts and the Financial Services and Markets Act 2000, as amended by the Financial Services Act 2012 (the “FSMA”).2012.


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Capital Requirements
The underwriting capacity of a Member of Lloyd’s must be supported by providing a deposit in the form of cash, securities or letters of credit in an amount determined under the capital adequacy regime of the U.K.’s PRA. The amount of such deposit is calculated for each Member through the completion of an annual capital adequacy exercise. Under these requirements, Lloyd’s must demonstrate that each Member has sufficient assets to meet its underwriting liabilities plus a required solvency margin. The required amount of Funds at Lloyd’s is determined by Lloyd’s based on each syndicate’s solvency and capital requirement as calculated through its internal model.

Intervention Powers
The Lloyd’s Council has wide discretionary powers to regulate Members’ underwriting at Lloyd’s. It may, for instance, withdraw a Member’s permission to underwrite business or to underwrite a particular class of business. The Lloyd’s Council may change the basis on which syndicate expenses are allocated or vary the Funds at Lloyd’s requirements or the investment criteria applicable to the provision of Funds at Lloyd’s. Exercising any of these powers might affect the return on the Member’s participation in a given underwriting year. If a Member of Lloyd’s is unable to pay its debts to policyholders, the Member may obtain financial assistance from the Lloyd’s Central Fund, which in many respects acts as an equivalent to a state guaranty fund in the U.S. If Lloyd’s determines that the Central Fund needs to be increased, it has the power to assess premium levies on current Members of Lloyd’s. The Lloyd’s Council has discretion to call or assess up to 3% of a Member’s underwriting capacity in any one year as a Central Fund contribution.
While not currently material to our operations, Syndicates 4020 and 3902 also access insurance business from the European Economic Area though the London Branch of Lloyd’s Insurance Company. Lloyd’s Insurance Company is authorized and regulated by the National Bank of Belgium and regulated by the Financial Services and Markets Authority.

Solvency II and the U.K.’s Domestic Prudential Regime
The European Parliament adoptedParliament’s Solvency II in April 2009 and it came into effect on January 1, 2016. Solvency IIregulation represents a risk-based approach to insurance regulation and capital adequacy. Its principal goals are to improve the correlation between capital and risk, effect group supervision of insurance and reinsurance affiliates, implement a uniform capital adequacy structure for (re)insurers across the EU Member States, establish consistent corporate governance standards for insurance and reinsurance companies, and establish transparency through standard reporting of insurance operations. Under Solvency II, an insurer’s or reinsurer’s capital adequacy in relation to various insurance and business risks may be measured with an internal model developed by the insurer or reinsurer and approved for use by the Member State’s regulator or pursuant to a standard formula developed by the European Commission. Following the U.K.'s exit from the EU, and the expiry of the transition period on December 31, 2020, U.K. authorized insurers are subject to the U.K.'s separate domestic prudential regime. This regime iswas identical to the Solvency II regime from January 1, 2021, although the PRA has made proposals that may cause the two regimes may begin to diverge over time. The U.K. is currently undertaking a review of Solvency II and of the regulatory regime applicable to U.K. authorized insurers and reinsurers.diverge.
The PRA granted approval to Lloyd’s internal model application in December 2015. Each year, the PRA requires Lloyd’s to satisfy an annual solvency test which measures whether Lloyd’s has sufficient assets in the aggregate to meet all outstanding liabilities of its Members, both current and run-off.runoff. If Lloyd’s fails this test, the PRA may require the entire Lloyd’s market to cease underwriting or individual Lloyd’s Members may be required to cease or reduce their underwriting.

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Cybersecurity
In 2018, theThe EU General Data Privacy Regulation (the “GDPR”) became effective. The GDPR requires companies to satisfy requirements regarding the notification of data breaches and the handling of personal and sensitive data, including its use, protection and the ability of persons whose data is stored to correct or delete such data about themselves. The GDPR permits regulators to impose fines of up to €20 million or 4% of global annual revenue, whichever is higher, and establishes a private right of action.
The GDPR was transposed into U.K. domestic law in January 2021 following the United Kingdom'sU.K.'s exit from the EU (“U.K. GDPR”) and supplements the United Kingdom's Data Protection Act of 2018. The UKU.K. GDPR mirrorsgenerally tracks the compliance requirements and fine structure of the GDPR.

Climate Change
In 2019, the PRA issued Supervisory Statement 3/19 “Enhancing banks’ and insurers’ approaches to managing the financial risks from climate change” and the “Framework for assessing financial impacts of physical climate change” (collectively the “PRA 2019 climate change risk management guidelines”). In response to the PRA 2019 climate change risk management guidelines, Ark has established a climate change working group and has undertaken a climate change risk assessment. The risk assessment highlighted regulatory, claims, and underwriting and investment risks associated with climate change. Ark regularly analyzes climate change risk as part of its risk management framework. Ark also engages with industry peers through the Lloyd’s Climate Change market group. Ark has assigned its Chief Risk Officer responsibility under the PRA Senior Insurance Managers Regime for climate change risk. The Chief Risk Officer reports to the Ark Board on climate change matters on a quarterly basis.


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General

Cybersecurity
We are subject to various state, federal and international laws and regulations that address the collection, storing, use, disclosure, security, privacy, transfer and other processing of personal information and other data, including SEC rules, Part 500, GDPR, the California Consumer Privacy Act, and the California Privacy Rights Act, among others.

Change of Control
The jurisdictions where we operate have laws and regulations that require regulatory approval of a change of control. Where such laws apply to us, there can be no effective change in our control (or in the control of some or our subsidiaries) unless the person seeking to acquire control has filed a statement with the regulators and obtained prior approval for the proposed change.

RATINGS

Insurance companies are evaluated by various rating agencies in order to measure each company’s financial strength. Higher ratings generally indicate financial stability and a stronger ability to pay claims. White Mountains believes that strong ratings are important factors in the marketing and sale of insurance products and services to agents, consumers and ceding companies.
As of February 25, 2022,23, 2024, BAM was rated “AA/stable” by Standard & Poor’s. “AA” is the third highest of 23 financial strength ratings assigned by Standard & Poor’s.
As of February 25, 2022,23, 2024, each of Lloyd’s Syndicates 4020 and 3902, benefits from the financial strength rating of “A/stable” by A.M. Best Company, Inc. (“A.M. Best”) and “A+“AA-/stable” by Standard & Poor’s assigned to the Lloyd’s marketplace. “A” is the third highest of 16 financial strength ratings assigned by A.M. Best and “A+“AA-” is the fifthfourth highest of 23 financial strength ratings assigned by Standard & Poor’s.
As of February 25, 2022, GAIL23, 2024, Ark was rated “A/stable” by A.M. Best.

HUMAN CAPITAL

As of December 31, 2021,2023, White Mountains employed 1,648782 people (consisting of 7068 people at the Company, WM Capital, its other intermediate holding companies, WM Advisors and HG Global, 8488 people at BAM, 208244 people at Ark, 999 people at NSM, 1216 people at Kudu, and 275366 people at the consolidated Other Operating Businesses).
One of White Mountains’s key strengths lies in its people, and it proactively supports each employee’s well-being and development. White Mountains’s Board of Directors receives periodic reporting on employee satisfaction and concerns and interacts with employees across the organization. White Mountains has an inclusive, team-oriented culture in which all employees are treated with respect. Under the guidelines of its Code of Business Conduct, White Mountains is firmly committed to providing equal employment opportunities. White Mountains is committed to the long-term development of our workforce and the cultivation of our next generation of leaders.
Throughout the unique challenges of 2021 andsince 2020, White MountainsMountains’s commitment to the health and safety of its employees and their families has been a guiding priority. To support its employees during this time, White Mountains expanded and encouraged remote work, introduced protocols and practices that emphasized employee well-being, regularly solicited feedback from its employees and significantly increased senior leadership communication.

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Item 1A.  Risk Factors

The information contained in this report may contain “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. See “FORWARD-LOOKING STATEMENTS” on page 9795 for specific important factors that could cause actual results to differ materially from those contained in forward-looking statements. The Company’s actual future results and trends may differ materially depending on a variety of factors including, but not limited to, the risks and uncertainties discussed below.

Risks Related to White Mountains Generally

We have successfully created shareholder value through acquisitions and dispositions.We may not be able to continue to create shareholder value through such transactions in the future, which could materially adversely affect our results of operations and financial condition.

In past years, we have completed numerous acquisitions and dispositions, many of which have contributed significantly to creating shareholder value. Failure to identify and complete future acquisitions and dispositions could limit our ability to create shareholder value. Even if we were to identify and complete future acquisitions and dispositions, there is no assurance that such transactions will ultimately achieve their anticipated benefits, and such transactions could materially adversely affect our results of operations and financial condition.

If we are required to write down goodwill and other intangible assets, it could materially adversely affect our results of operations and financial condition.

As of December 31, 2021,2023, we had total goodwill and other intangible assets of $1,066$371 million on our consolidated balance sheet, most$293 million of which relates to our acquisitionsacquisition of Ark and NSM and NSM’s subsequent acquisitions of KBK, Embrace, the Renewal Rights from AIG, Kingsbridge and J.C. Taylor. As of December 31, 2021,Ark. White Mountains’s total goodwill and other intangible assets related to Ark and NSM were $1,018 million.will increase in 2024 as a result of the Bamboo Transaction.
    We periodically review goodwill and other intangible assets to determine whether an impairment has occurred. An impairment of goodwill or other intangible assets occurs when the carrying value of the asset exceeds its fair value. The evaluation of goodwill or other intangible assets for impairment requires the use of significant judgment in determining fair value, including assumptions about the future performance of the associated business. We may experience unexpected circumstances that cause future results to differ significantly from those assumptions used in our estimation of the fair value of our goodwill and other intangible assets that could cause us to conclude that goodwill and other intangible assets are impaired. Such an impairment would result in a non-cash charge to income that could materially adversely affect our results of operations and financial condition.

Our investment portfolio may suffer reduced returns or losses, which could materially adversely affect our results of operations and financial condition. Adverse changes in equity markets, interest rates, debt markets or foreign currency exchange rates could result in significant losses to the value of our investment portfolio.

Our investment portfolio primarily consists of fixed maturity investments, short-term investments, common equity securities, our investment in MediaAlpha and other long-term investments. We invest to maximize long-term after-tax total returns while taking prudent levels of risk and maintaining a diversified portfolio subject to our investment guidelines and various regulatory restrictions. However, investing entails substantial risks. We may not achieve our investment objectives, and our investment performance may vary substantially over time. Losses or volatility in the equity or fixed income markets could materially adversely affect our results of operations and financial condition.
The fair market value of our investment portfolio is affected by general economic and market conditions that are outside of our control, including (i) fluctuations in equity market levels, interest rates, debt market levels and foreign currency exchange rates, (ii) public health crises, natural disasters, terrorist attacks and other outside events, and (iii) credit losses sustained by issuers. A significant decline in the equity markets such as that experienced from September 2008 to March 2009 could materially adversely affect our results of operations and financial condition. In addition to causing declines in the value of securities that we own in our investment portfolio, public health crises, natural disasters, terrorist attacks and other outside events can adversely affect general commercial activity and the economies of many countries, which could materially adversely affect the business, financial condition and results of operations of the entities in which we have invested. For example, reductions of travel, including due to travel restrictions and bans imposed by governments due to the COVID-19 pandemic, could negatively impact revenues at PassportCard/DavidShield. We are also exposed to changes in debt markets. Interest rates are highly sensitive to many factors, including governmental monetary policies, economic and political conditions and other factors beyond our control. In particular, a significant increase in interest rates could result in significant losses in the value of our investment portfolio and, consequently, could materially adversely affect our results of operations and financial condition. We also hold investments, such as unconsolidated entities, including Kudu’s Participation Contracts, a bank loan fund, private equity funds, hedge funds, Lloyd’s trust deposits, ILS funds and private debt instruments that are not regularly traded in active investment markets and may be illiquid. These investments can experience volatility in their returns or valuation, which could materially adversely affect our results of operations and financial condition.
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We may be subject to greater volatility from our investment in MediaAlpha, which could materially adversely affect our results of operations and financial condition.

On October 30, 2020, MediaAlpha completed the MediaAlpha IPO. Following the MediaAlpha IPO, White Mountains’s investment in MediaAlpha is valued based on the publicly-traded share price of MediaAlpha’s common stock, which at the December 31, 2021 closing price of $15.44 per share was $262 million. As a result, White Mountains’s reported book value per share and adjusted book value per share may be subject to greater volatility in the future, as the valuation of its investment in MediaAlpha based on the publicly-traded share price of MediaAlpha’s common stock could be more volatile than the valuation of its investment in MediaAlpha based on the private discounted cash flow model used in White Mountains’s financial statements in periods prior to the MediaAlpha IPO. Should there be a significant decrease in the publicly-traded share price of MediaAlpha’s common stock, it could materially adversely affect our results of operations and financial condition.

We have successfully created shareholder value through acquisitions and dispositions. We may not be able to continue to create shareholder value through such transactions in the future, which could materially adversely affect our results of operations and financial condition.

In past years, we have completed numerous acquisitions and dispositions, many of which have contributed significantly to creating shareholder value. Failure to identify and complete future acquisitions and dispositions could limit our ability to create shareholder value. Even if we were to identify and complete future acquisitions and dispositions, there is no assurance that such transactions will ultimately achieve their anticipated benefits, and such transactions could materially adversely affect our results of operation and financial condition.

Our investment portfolio includes securities that do not have readily observable market prices. We use valuation methodologies that are inherently subjective and uncertain to value these securities. The values of securities established using these methodologies may never be realized, which could materially adversely affect our results of operations and financial condition.

As of December 31, 2021, White Mountains owned $891 million in securities, including our investments in Kudu’s Participation Contracts and PassportCard/DavidShield, that are not actively traded in public markets, do not have readily observable market prices, and are classified as Level 3 investments in the GAAP fair value hierarchy. On a quarterly basis, we make a good faith determination of the fair value of our Level 3 investments in our GAAP financial statements using valuation techniques that are inherently subjective and uncertain.
In determining the GAAP fair value of these securities, we use judgment in selecting the fair value methodology and the significant inputs that are employed by that methodology for each such investment. See “Level 3 Measurements” under “CRITICAL ACCOUNTING ESTIMATES - Fair Value Measurements” on pages 76 - 78 for a description of the methodologies we use to determine GAAP fair value of our investments without a readily observable market price. Given the inherent subjectivity and uncertainty in the methodologies we use to determine the fair value of our investments without a readily observable market price, the values of such investments established using these methodologies may never be realized, which could materially adversely affect our results of operations and financial condition.


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Risks Related to HG Global/BAM’s Business and Industry

BAM may not maintain a favorable financial strength rating, which could materially adversely affect its ability to conduct business and, consequently, could materially adversely affect our results of operations and financial condition.

Third-party rating agencies assess and rate the financial strength of insurers, including claims-paying ability. These ratings are based upon criteria established by the rating agencies and are subject to revision at any time at the sole discretion of the rating agencies. Some of the criteria relate to general economic conditions and other circumstances outside the rated insurer’s control. The financial strength rating of Standard & Poor’s is used by outside parties to assess the suitability of BAM as a business counterparty and is an important factor in establishing BAM’s competitive position.
Standard & Poor’s periodically evaluates BAM to confirm that it continues to meet the criteria of the rating previously assigned to it. On June 6, 2017, Standard & Poor’s placed BAM on credit watch negative and initiated a detailed review of BAM’s financial strength rating. On June 26, 2017, Standard & Poor’s concluded its review and affirmed BAM’s “AA/stable” financial strength rating. During the time that BAM’s financial strength rating was placed on credit watch negative by Standard & Poor’s, it voluntarily withdrew from the marketplace and did not write any municipal bond insurance policies.
The maintenance of an “AA” or better financial strength rating from Standard & Poor’s is particularly important to BAM’s ability to write municipal bond insurance policies and meet its debt service obligations under the BAM Surplus Notes. On July 28, 2021,12, 2023, Standard & Poor’s concluded its most recent review and affirmed BAM’s “AA/stable” financial strength rating. See “RATINGS” on page 25.26. A downgrade, withdrawal or negative watch/outlook of BAM’s financial strength rating could severely limit or prevent BAM’s ability to write municipal bond insurance policies, which could materially adversely affect our results of operations and financial condition.

If BAM does not pay some or all of the principal and interest due on the BAM Surplus Notes, it could materially adversely affect our results of operations and financial condition.

As of December 31, 2021,2023, White Mountains owned $365$322 million in BAM Surplus Notes and had accrued $158$175 million of interest thereon. No payment of principal or interest on the BAM Surplus Notes may be made without the approval of the NYDFS. Under its agreements with HG Global, BAM is required to seek regulatory approval to pay principal and interest on the BAM Surplus Notes only to the extent that its capital resources continue to support its outstanding obligations, business plan and rating. It is unlikely that BAM would pay principal and interest on the BAM Surplus Notes if such payments could lead to a rating downgrade. In December 2021,2023, the NYDFS approved a $34$27 million cash payment of principal and interest on the BAM Surplus Notes. We cannot guarantee that the NYDFS will approve payments on the BAM Surplus Notes in the future.
If BAM does not repay some or all of the principal and interest on the BAM Surplus Notes, it could materially adversely affect our results of operations and financial condition. BAM’s ability to repay principal and interest on the BAM Surplus Notes is dependent on a number of factors, many of which are beyond BAM’s control, including primary municipal bond issuance levels, insured penetration rates, interest rate levels, credit spreads, trading value, capture rate and market share. BAM also could incur significant losses from the municipal bonds it insures. In addition, the municipal bond insurance industry is highly competitive. BAM’s primary competitor is Assured. BAM and Assured each seeksseek to differentiate itselfthemselves through financial strength ratings, claims paying resources and underwriting strategies. If BAM is unable to compete effectively against Assured, it could result in fewer policies issued, lower premium levels and less favorable policy terms and conditions.

We are exposed to losses from municipal bond insurance written by BAM through our reinsurance arrangements between BAM and HG Re, which could materially adversely affect our results of operations and financial condition.

Our reinsurance subsidiary, HG Re, reinsures (i) losses up to the first 15%-of-par outstanding on each municipal bond insured by BAM and (ii) certain municipal bonds insured by BAM on an excess of loss basis. Should the policies underwritten by BAM experience insured losses for any reason, itthis could materially adversely affect our results of operations and financial condition. The COVID-19 pandemic is negatively impacting the finances of municipalities to varying degrees, and, over time, financial stress could emerge. BAM views consumption-based tax-backed credits (sales, hotel, excise), transportation-related credits (airports, mass transportation, ports and toll roads) and higher education-related credits as those most likely to be affected by pandemic-related impacts on the economy. Combined, these sectors total approximately 16% of BAM’s outstanding insured par.


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Risks Related to Ark’sArk/WM Outrigger’s Business and Industry
    
Unpredictable catastrophic events could materially adversely affect our results of operations and financial condition.

Ark writesand WM Outrigger Re write insurance and reinsurance policies that cover unpredictable catastrophic events.events all over the world. Ark hasand WM Outrigger Re have exposure to losses caused by unpredictable catastrophic events including natural and other disasters such as hurricanes, windstorms, earthquakes, floods, wildfires, tornadoes, tsunamis and severe winter weather all over the world.weather. Catastrophes can also include large losses driven by public health crises, terrorist attacks, war and war-like actions, explosions, infrastructure failures and cyber-attacks.cyber attacks.
The extent of a catastrophe loss is a function of both the severity of the event and the total amount of insured exposure to the event, as well as the coverage provided to customers. Increases in the value and concentration of insured property or insured employees, the effects of inflation, changes in weather patterns and increased terrorism and war and war-like actions could increase the future frequency and/or severity of claims from catastrophic events. Climate change, contributes towhich is characterized by higher temperatures, sea level rise and more extreme weather events including droughts, heavy storms, wildfires and stronger hurricanes which increases the frequency and severity of certain major natural catastrophes. There is also a growing threat of cyber catastrophesrisks due to the increasing interconnectivity of global systems. Claims from catastrophic events could materially adversely affect our results of operations and financial condition. Ark’s ability to write new insurance and reinsurance policies could also be impacted as a result of corresponding reductions in its capital levels. WM Outrigger Re’s obligations under the quota share reinsurance agreement with GAIL are subject to an aggregate limit equal to the assets in the collateral trust account at any point in time.
Ark seeks to manage its exposure to catastrophic losses by limiting and monitoring the aggregate insured value of policies in geographic areas with exposure to catastrophic events and by buying reinsurance. To manage, monitor and analyze insured values and potential losses, Ark utilizes proprietary and third-party catastrophe management software to estimate potential losses for many different catastrophe scenarios. Ark incorporates the physical risk of climate change into its underwriting process through sensitivity and stress testing of its catastrophe models, including increased frequency of U.S. windstorms and the implications of storm surge. Ark’s estimates of potential losses are dependent on many variables, including assumptions about storm intensity, storm surge, and loss amplification, loss adjustment expenses and insurance-to-value in the aftermath of weather-related catastrophes. In addition, Ark has to account for quality of data provided by insureds. Accordingly, if the assumptions are incorrect, the losses Ark and WM Outrigger Re might incur from an actual catastrophe could be materially different than the expectation of losses generated from modeled catastrophe scenarios, which could materially adversely affect our results of operations and financial condition.

Ark and its subsidiaries benefit from favorable financial strength ratings from A.M. Best, and Standard & Poor’s and others, the deterioration of which could materially adversely affect its ability to conduct business and, consequently, could materially adversely affect our results of operations and financial condition.

Third-party rating agencies assess and rate the financial strength, including claims-paying ability, of insurers, reinsurers and the Lloyd’s marketplace. These ratings are based upon criteria established by the rating agencies and are subject to revision at any time at the sole discretion of the agencies. Some of the criteria relate to general economic conditions and other circumstances outside the rated company’s control. These financial strength ratings are used by policyholders, agents and brokers to assess the suitability of insurers and reinsurers as business counterparties and are an important factor in establishing the competitive position of insurance and reinsurance companies. Rating agencies periodically evaluate usArk to confirm that we continueit continues to meet the criteria of the ratingsrating previously assigned to us.it.
The maintenance of an “A-” or better financial strength ratingsrating is particularly important to Ark’s ability to write new orand renewal property and casualty insurance and reinsurance business in most markets. Ark writes insurance and reinsurance through Lloyd’s Syndicates 4020 and 3902, each of which benefits from the financial strength rating of “A/stable” by A.M. Best and “A+“AA-/stable” by Standard & Poor’s assigned to the Lloyd’s marketplace. Beginning in January 2021, Ark began writing certain classes of its business through GAIL, Ark’s wholly-owned Bermuda-based insurance and reinsurance company, which has been assigned an “A/stable” financial strength rating by A.M. Best. See “RATINGS” on page 25.26.
A downgrade, withdrawal or negative watch/outlook of these financial strength ratings could severely limit or prevent Ark from writing new policies or renewing existing policies, which could materially adversely affect our results of operations and financial condition. A downgrade, withdrawal or negative watch/outlook of these financial strength ratings also could limit ourArk’s ability to raise new debt or could makecause new and certain existing debt more costlyto be costlier and/or have more restrictive conditions.

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Ark may not successfully alleviate risk through reinsurance and retrocessional arrangements, which could materially adversely affect our results of operations and financial condition.

Ark attempts to limit its risk of loss through reinsurance and retrocessional arrangements.arrangements, including through its quota share reinsurance agreements with Outrigger Re Ltd. Retrocessional arrangements refer to reinsurance purchased by a reinsurer to cover its own risks assumed from ceding companies. The availability and cost of reinsurance and retrocessional protection is subject to market conditions, which are outside of ourArk’s control. In addition, the coverage provided by Ark’s reinsurance and retrocessional arrangements may be inadequate to cover its future liabilities. As a result, Ark may not be able to successfully alleviate risk through these arrangements, which could materially adversely affect our results of operations and financial condition.
In addition, due to factors such as the price or availability of reinsurance or retrocessional coverage, Ark sometimes decides to increase the amount of risk retained by purchasing less reinsurance. Such determinations have the effect of increasing Ark’s financial exposure to losses associated with risks that it underwrites and, in the event of significant losses associated with a given risk, could materially adversely affect our results of operations and financial condition.
Purchasing reinsurance does not relieve Ark of its underlying obligations to policyholders or ceding companies, so any inability to collect amounts due from reinsurers could materially adversely affect our results of operations and financial condition. Inability to collect amounts due from reinsurers, including Outrigger Re Ltd., can result from a number of scenarios, including: (1)(i) reinsurers choosing to withhold payment due to a dispute or other factors beyond ourArk’s control; and (2)(ii) reinsurers becoming unable to pay amounts owed to usArk as a result of a deterioration in their financial condition.condition; and (iii) losses exceeding amounts within the collateral trust accounts for Outrigger Re Ltd. While we currently believe the condition of Ark’s reinsurers is strong, it is possible that one or more of Ark’s reinsurers will be adversely affected by future significant losses or economic events, causing them to be unable or unwilling to pay amounts owed.
In addition, due to factors such as the price or availability of reinsurance or retrocessional coverage, we sometimes decide to increase the amount of risk we retain by purchasing less reinsurance. Such determinations have the effect of increasing our financial exposure to losses associated with such risks and, in the event of significant losses associated with a given risk, could materially adversely affect our results of operations and financial condition.

The property and casualty insurance and reinsurance industries are highly competitive and cyclical, and weArk may not be able to compete effectively in the future, which could materially adversely affect our results of operations and financial condition.

The property and casualty insurance and reinsurance industries are highly competitive and have historically been cyclical, experiencing periods of severe price competition and less selective underwriting standards (soft markets) followed by periods of relatively high prices and more selective underwriting standards (hard markets). Ark competes with other Lloyd’s syndicates, the London companies market participants and major U.S., Bermuda, and European and other international insurance and reinsurance companies. Many of these competitors have greater resources than Ark does, have established long-term and continuing business relationships throughout the insurance and reinsurance industries and may have higher financial strength ratings, which can be arepresent significant competitive advantageadvantages for them.
Soft primary insurance market conditions could lead to a significant reduction in reinsurance premium rates, less favorable contract terms and fewer submissions for Ark’s reinsurance underwriting capacity. The supply of reinsurance is also related to the level of reinsured losses and the level of industry capital which, in turn, may fluctuate in response to changes in rates of return earned in the reinsurance industry. As a result, the reinsurance business historically has been a cyclical industry characterized by periods of intense price competition due to excess underwriting capacity, as well as periods when shortages of capacity permitted improvements in reinsurance rate levels and terms and conditions. In addition, in recent years the persistent low interest rate environment and ease of entry into the reinsurance sector has led to increased competition from third-party capital in the property catastrophe excess reinsurance line. This alternative capital provides collateralized property catastrophe protection in the form of catastrophe bonds, industry loss warranties, sidecars and other vehicles that facilitate the ability for non-reinsurance entities, such as hedge funds and pension funds, to compete for property catastrophe excess reinsurance business outside of the traditional treaty market.
We expect to continue to experience the effects of the insurance and reinsurance industries’ cyclicality. If Ark is unable to maintain its competitive position throughout soft and hard market cycles, its business may be adversely affected, and weit may not be able to compete effectively in the future, which could materially adversely affect our results of operations and financial condition.

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Ark’sArk/WM Outrigger’s loss and LAE reserves may be inadequate to cover the ultimate liability for losses, and as a result, our results of operations and financial condition could be adversely affected.

ArkArk/WM Outrigger must maintain reserves adequate to cover theits estimated ultimate liabilities for loss and LAE. Loss and LAE reserves are typically comprised of (1)(i) case reserves for reported claims and (2)(ii) incurred but not reported (“IBNR”) reserves for losses that have occurred but for which claims have not yet been reported and for expected future development on case reserves. Loss and LAE reserves are estimates of what ArkArk/WM Outrigger believes the settlement and administration of claims will cost based on facts and circumstances then known to Ark.known. These estimates involve actuarial and claims assessments and require ArkArk/WM Outrigger to make a number of assumptions about future events that are subject to unexpected changes and are beyond Ark’sArk/WM Outrigger’s control, such as future trends in claim severity, emerging coverage issues, frequency, inflation, legislative and judicial changes and other factors. Because of uncertainties associated with estimating ultimate loss and LAE reserves, we cannot be certain that Ark’sArk/WM Outrigger’s reserves are adequate. In the event that Ark’sArk/WM Outrigger’s reserves become insufficient to cover the actual losses and LAE, ArkArk/WM Outrigger may need to add to the reserves, which could have a material adverse effect on our results of operations and financial condition. For further discussion of our loss and LAE reserves, see “CRITICAL ACCOUNTING ESTIMATES — Loss and LAE Reserves” on page 79.79.

Risks Related to NSM’s Business and Industry

    Our commission revenues are dependent on many factors, some of which are beyond our control, including the pricing and profitability of certain segments of the property and casualty insurance industry, which is highly competitive and cyclical.

    NSM generates most of its revenues from commissions that are a portion of premiums charged by insurance companies to their insureds. NSM also generates profit commissions from certain of its businesses that are paid by insurance companies based on the profitability of policies placed with them. NSM is an MGA and program administrator with delegated binding authorities, and as such, its carrier partners bear the insurance risk on the programs designed and underwritten by NSM. Should NSM fail to meet the profitability expectations of the carriers that write the business it places, those carriers could choose to stop writing the business, which could materially adversely affect NSM’s commission revenues and, consequently, could materially adversely affect our results of operations and financial condition.
    The property and casualty insurance industry is highly competitive and has historically been cyclical, experiencing periods of severe price competition and less selective underwriting standards (soft markets) followed by periods of relatively high prices and more selective underwriting standards (hard markets). The cyclicality of the property and casualty markets is beyond our control and could materially adversely affect our results of operations and financial condition by reducing the commissions we receive for property and casualty insurance we place during soft markets.  We expect to continue to experience the effects of cyclicality and may not be able to successfully manage the associated risks.
    Our future commission revenues could also be materially adversely affected by other factors beyond our control, including (i) the increasing availability of capital markets-based products designed to replace traditional insurance and reinsurance products; (ii) growth in the direct-to-consumer sales channel at the expense of insurance intermediaries including agents; and (iii) the percentage of premium insurance carriers will pay for placement services.

    A substantial portion of NSM’s business is placed with one insurance carrier, and most of NSM’s business is placed with a small number of carriers.

    NSM placed approximately 25% of its business with its single largest carrier during the year ended December 31, 2021. NSM placed approximately 65% of its business with its five largest carriers during the year ended December 31, 2021. Should any of these carriers reduce the volume of business accepted from NSM or adversely change the terms and conditions of placement, we cannot guarantee that NSM would be able to find other carriers to assume the business, which could materially adversely affect our results of operations and financial condition.


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Risks Related to Kudu’s Business and Industry

    Kudu’s financial performance is dependent upon its clients’ asset and performance-based fees, which are subject to a variety of economic, market and other risks.

    Through our subsidiary Kudu we provideprovides capital solutions for asset and wealth management firms through non-controllingParticipation Contracts, which are noncontrolling equity interests in the form of revenue and earnings participation contracts. Kudu’s clients generate their revenues and earnings by charging asset basedasset-based fees, which are typically a percentage of the value of the assets they manage for their clients, and/or performance basedperformance-based fees, which are typically a portion of actual returns achieved for their clients above a target return. The revenue that Kudu generates from its clients is subject to the same general economic and market risks that may affect our investment portfolio. See Our investment portfolio may suffer reduced returns or losses, which could materially adversely affect our results of operations and financial condition. Adverse changes in equity markets, interest rates, debt markets or foreign currency exchange rates could result in significant losses to the value of our investment portfolio.” on page 26.33.
    Additionally, Kudu’s clients participate in a highly competitive, highly regulated industry that subjects their operations to a number of other risks that are out of our control and could materially adversely affect our results of operations and financial condition, including (i) changes in investor preference from the actively-managed investments offered by Kudu’s clients to passively-managed investments; (ii) the ability of Kudu’s clients to successfully attract new clients and retain existing ones; (iii) the ability of Kudu’s clients to avoid fee compression; (iv) the reliance of Kudu’s clients on a small number of key personnel; and (v) future changes to regulations that make Kudu’s clients’ businesses more cumbersome and expensive to operate.


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Risks Related to Bamboo’s Business and Industry

Bamboo’s business is dependent on its capacity providers (both fronting and reinsurance), and a change in availability or terms could materially impact Bamboo’s results of operations and financial condition or adversely affect its ability to write business.

Bamboo is an MGA and program administrator with delegated binding authorities, and as such, is generally dependent on its fronting and reinsurance carrier partners (“Capacity Providers”) to bear the insurance risk on the programs designed and underwritten by Bamboo. Bamboo currently relies on a small group of Capacity Providers for a large proportion of its business, and loss of capacity from any one of these could materially adversely affect Bamboo’s results of operations and financial condition.
Should Bamboo fail to meet the profitability expectations of its Capacity Providers that write the business it places, its Capacity Providers could choose to stop writing the business or reduce the commission rate they will pay for placement services, which could materially adversely affect our results of operations and financial condition.
For the year ended December 31, 2023, Bamboo placed substantially all of its business with one fronting partner. Should its fronting partner reduce the volume of business accepted from Bamboo or adversely change the terms and conditions of placement, we cannot guarantee that Bamboo would be able to find other fronting partners to write its programs, which could materially adversely affect its results of operations and financial condition. In addition, Bamboo relies on its fronting partner’s financial strength rating in establishing the competitive position of its products. A ratings downgrade of Bamboo’s fronting partner could result in a substantial loss of business should policyholders choose to move to other companies with higher financial strength ratings.
Bamboo, in conjunction with its fronting partners, purchases various forms of reinsurance. The availability and cost of reinsurance are subject to prevailing market conditions, including terms, price and capacity, which can affect Bamboo’s business volume and profitability. In addition, reinsurance programs are generally subject to renewal on an annual basis. Bamboo and its fronting partners may not be able to obtain reinsurance on acceptable terms.Even if available, that reinsurance may not be available from entities with satisfactory creditworthiness. If Bamboo is unable to obtain satisfactory reinsurance, it would have to reduce the level of its underwriting commitments, which could materially adversely affect its results of operations and financial condition.
For the year ended December 31, 2023, the (re)insurance capacity for Bamboo’s programs was concentrated, with two Capacity Providers representing approximately 45% of Bamboo’s premium. Should its Capacity Providers reduce the volume of business accepted from Bamboo or adversely change the terms and conditions, we cannot guarantee that Bamboo would be able to find other Capacity Providers to write the business, which could materially adversely affect its results of operations and financial condition.

Bamboo primarily relies on third-party agents and brokers to distribute its products, and any deterioration in the relationships with these parties could adversely affect Bamboo’s business.

Substantially all of Bamboo’s products are distributed through third-party agents and brokers who have the principal relationships with policyholders. Agents and brokers generally own the “renewal rights,” and thus Bamboo’s business model is dependent on its relationships with, and the success of, the agents and brokers with whom Bamboo does business.
Because Bamboo primarily relies on third-party agents and brokers as its sales channel, any deterioration in the relationships with these parties or failure to provide competitive compensation could lead them to place less premium with Bamboo. Bamboo places a substantial portion of its premium through a limited number of agents and broker relationships. For the year ended December 31, 2023, the top three relationships accounted for 47% of managed premium. Certain of these agents and brokers also have wholly-owned insurance subsidiaries that may compete with Bamboo, and these brokers may favor their own insurers and reinsurers over other companies. Loss of all or a substantial portion of the business provided by one or more of these agents and brokers could have a material adverse effect on Bamboo’s business.

Bamboo and its fronting partners are subject to extensive regulation which may prevent Bamboo from adequately pricing or selecting risk.

Bamboo and its fronting partners are subject to extensive state regulation, primarily in the state of California. This regulation requires, among other things, state approval of policy forms and premium rates for fronting carriers and admitted producers. If policy forms and premium rates are not approved in a timely manner, Bamboo’s ability to price risk adequately will be adversely impacted. Additionally, state regulators could restrict market access or place undue burdens on Bamboo’s ability to manage risk selection. Inadequate pricing or selection of risk could materially adversely affect Bamboo’s results of operations and financial condition.

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Risks Related to Investments

Our investment portfolio may suffer reduced returns or losses, which could materially adversely affect our results of operations and financial condition. Adverse changes in equity markets, interest rates, debt markets or foreign currency exchange rates could result in significant losses to the value of our investment portfolio.

Our investment portfolio primarily consists of fixed maturity investments, short-term investments, common equity securities, our investment in MediaAlpha and other long-term investments. We invest to maximize long-term after-tax total returns while taking prudent levels of risk and maintaining a diversified portfolio subject to our investment guidelines and various regulatory restrictions. However, investing entails substantial risks. We may not achieve our investment objectives, and our investment performance may vary substantially over time. Losses or volatility in the equity or fixed income markets could materially adversely affect our results of operations and financial condition.
The fair market value of our investment portfolio is affected by general economic and market conditions that are outside of our control, including (i) fluctuations in equity market levels, interest rates, debt market levels and foreign currency exchange rates; (ii) public health crises, natural disasters, terrorist attacks and other outside events; and (iii) credit losses sustained by issuers. A significant decline in the equity markets such as that experienced from September 2008 to March 2009 could materially adversely affect our results of operations and financial condition. In addition to causing declines in the fair value of securities that we own in our investment portfolio, public health crises, natural disasters, terrorist attacks and other outside events can adversely affect general commercial activity and the economies of many countries, which could materially adversely affect the business, financial condition and results of operations of the entities in which we have invested. For example, reductions of travel, including travel restrictions and bans imposed by governments due to the COVID-19 pandemic, negatively impacted revenues at PassportCard/DavidShield in 2020. We are also exposed to changes in debt markets. Interest rates are highly sensitive to many factors, including governmental monetary policies, economic and political conditions and other factors beyond our control. In particular, a significant increase in interest rates, as experienced in 2022, could result in significant losses in the fair value of our investment portfolio. A significant increase in interest rates that causes severe losses could materially adversely affect our results of operations and financial condition. We also hold investments, such as unconsolidated entities, including Kudu’s Participation Contracts, private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits, ILS funds and private debt instruments, that are not regularly traded in active investment markets and may be illiquid. These investments can experience volatility in their returns or valuation, which could materially adversely affect our results of operations and financial condition.

We may be subject to greater volatility from our investment in MediaAlpha, which could materially adversely affect our results of operations and financial condition.

Following the MediaAlpha IPO in October 2020, White Mountains’s investment in MediaAlpha is valued based on the publicly-traded share price of MediaAlpha’s common stock, which at the December 31, 2023 closing price of $11.15 per share was $255 million. As a result, White Mountains’s reported book value per share and adjusted book value per share may be subject to greater volatility in the future, as the valuation of its investment in MediaAlpha based on the publicly-traded share price of MediaAlpha’s common stock could be more volatile than the valuation of its investment in MediaAlpha based on the private discounted cash flow model used in White Mountains’s financial statements in periods prior to the MediaAlpha IPO. Should there be a significant decrease in the publicly-traded share price of MediaAlpha’s common stock, it could materially adversely affect our results of operations and financial condition.

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Our investment portfolio includes securities that do not have readily observable market prices. We use valuation methodologies that are inherently subjective and uncertain to value these securities. The values of securities established using these methodologies may never be realized, which could materially adversely affect our results of operations and financial condition.

As of December 31, 2023, White Mountains owned $1,138 million in securities, including our investments in Kudu’s Participation Contracts and PassportCard/DavidShield, that are not actively traded in public markets, do not have readily observable market prices and are classified as Level 3 investments in the GAAP fair value hierarchy. On a quarterly basis, we make a good faith determination of the fair value of our Level 3 investments in our GAAP financial statements using valuation techniques that are inherently subjective and uncertain.
In determining the GAAP fair value of these securities, we use judgment in selecting the fair value methodology and the significant inputs that are employed by that methodology for each such investment. See “Level 3 Measurements” under “CRITICAL ACCOUNTING ESTIMATES - Fair Value Measurements” on page 76 for a description of the methodologies we use to determine GAAP fair value of our investments without a readily observable market price. Given the inherent subjectivity and uncertainty in the methodologies we use to determine the fair value of our investments without a readily observable market price, the values of such investments established using these methodologies may never be realized, which could materially adversely affect our results of operations and financial condition.

Risks Related to Taxation

We may not meet the requirements of the five-year deferral from the Bermuda corporate income tax or the OECD Pillar Two Undertaxed Profits Rule, which could materially adversely affect our results of operations and financial condition.

On December 27, 2023, Bermuda enacted a corporate income tax that will generally become effective on January 1, 2025. The Bermuda legislation defers the effective date until January 1, 2030, for Bermuda companies in consolidated groups that meet certain requirements. To qualify for the deferral, the group must (i) have permanent establishments in six or fewer countries, (ii) have less than €50 million of net tangible assets outside of the country where the group has the largest amount of net tangible assets and (iii) not have a Bermuda company subject to the Income Inclusion Rule of Pillar Two in any jurisdiction. White Mountains expects to meet the requirements to be exempt from the Bermuda corporate income tax until January 1, 2030.
On December 15, 2022, European Union Member States voted to adopt the European Union Minimum Tax Directive (the “EU Minimum Tax Directive”) in conformity with OECD’s Pillar Two initiative. The EU Minimum Tax Directive requires European Union Member States to enact conforming law by December 31, 2023. The main rule of the EU Minimum Tax Directive, the Income Inclusion Rule (“IIR”), will become effective for fiscal years beginning on or after December 31, 2023, while the Undertaxed Profits Rule (“UTPR”) will become effective for fiscal years beginning on or after December 31, 2024. On December 20, 2023, Luxemburg enacted conforming Pillar Two legislation. The Luxembourg legislation defers the effective date of the UTPR until fiscal years beginning after December 31, 2029 for Luxembourg companies in consolidated groups with a non-EU parent company that meet certain requirements. To qualify for the deferral, the group must (i) have permanent establishments in six or fewer countries, and (ii) have less than €50 million of net tangible assets outside of the country where the group has the largest amount of net tangible assets. White Mountains expects to meet the requirements to be exempt from the Luxembourg UTPR until January 1, 2030.
On July 11, 2023, the U.K. enacted conforming legislation adopting the Pillar Two IIR, which will become effective for fiscal years beginning on or after December 31, 2023. The U.K. has proposed legislation to adopt the Pillar Two UTPR effective for fiscal years beginning on or after December 31, 2024; however, this legislation has not yet been enacted.
If White Mountains fails to meet the requirements of the five-year deferral under the Bermuda corporate income tax or the OECD Pillar Two UTPR, its results of operations and financial condition could be materially adversely affected.

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We may be treated as a PFIC, in which case a U.S. holder of our common shares could be subject to disadvantageous rules under U.S. federal income tax laws.

Significant potential adverse U.S. federal income tax consequences apply to any U.S. person who owns shares in a passive foreign investment company (“PFIC”). In general, a non-U.S. corporation is classified as a PFIC for a taxable year in which, after taking into account the income and assets of the corporation and certain subsidiaries pursuant to certain “look-through” rules, either (i) 75% or more of its gross income is passive income or (ii) 50% or more of the average quarterly value of its gross assets is attributable to assets that produce passive income or are held for the production of passive income. If a corporation is treated as a PFIC for a taxable year, it is generally treated as a PFIC for all later taxable years. Passive income for PFIC purposes generally includes interest, dividends and other investment income, subject to certain exceptions.
On January 15, 2021 new final and proposed PFIC regulations issued by the U.S. Department of the Treasury were published in the Federal Register.The final regulations are generally effective for tax years of shareholders beginning on or after their date of publication.The proposed regulations may be selectively adopted by shareholders prior to their finalization.We are carefully studying the final and proposed regulations, including their effective dates and their application to White Mountains to determine their effects on our PFIC status in the future.
While we believe that White Mountains should not currently be treated as a PFIC based upon the income and assets of White Mountains and the income and assets of its subsidiaries (taking into account certain applicable subsidiary “look-through” rules), there is no assurance that White Mountains will not become a PFIC in the future as a result of changes in law or regulations (or their application to White Mountains) or changes in our assets, income or business operations. Nor is there assurance that the Internal Revenue Service will not successfully argue that White Mountains is now, or in the future may become, a PFIC.
If we are determined to be a PFIC, a U.S. person may be subject to less advantageous tax consequences upon the sale, exchange or receipt of dividends with respect to our common shares and may be required to pay U.S. federal income tax at ordinary income rates for gains and dividends, as well as an interest charge on certain “excess distributions.” Certain elections designed to mitigate the adverse consequences of owning shares in a PFIC, including a “Protective QEF Election,” may be available. If you are a U.S. person, we encourage you to consult your own tax advisor concerning the potential tax consequences to you under the PFIC rules.

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The Company and certain of our non-U.S. subsidiaries may become subject to U.S. tax, which could materially adversely affect our results of operations and financial condition.

The Company and our non-U.S. subsidiaries without U.S. branches operate in a manner such that none of these companies should be subject to U.S. tax (other than U.S. excise tax on insurance and reinsurance premium income attributable to insuring or reinsuring U.S. risks and U.S. withholding tax on some types of U.S. source investment income) because none of these companies should be treated as engaged in a trade or business within the United States. However, because there is considerable uncertainty as to the activities that constitute being engaged in a trade or business within the United States, we cannot be certain that the Internal Revenue Service will not contend successfully that the Company or its non-U.S. subsidiaries without U.S. branches are engaged in a trade or business in the United States. If the Company or any of its non-U.S. subsidiaries without U.S. branches were considered to be engaged in a trade or business in the United States, such entity could be subject to U.S. corporate income and branch profits taxes on the portion of its earnings effectively connected to such U.S. business, which could materially adversely affect our results of operations and financial condition.

Changes in tax laws or tax treaties could materially adversely affect our results of operations and financial condition.

The income of our U.S. subsidiaries is subject to U.S. federal, state and local income tax and other taxes. The income of our non-U.S. subsidiaries is generally subject to a lower tax rate than that imposed by the United States. Certain of our non-U.S. subsidiaries are eligible for the benefits of tax treaties between the United States and other countries. We believe our non-U.S. subsidiaries will continue to be eligible for treaty benefits. However, it is possible that factual changes or changes to U.S. tax laws or changes to tax treaties that presently apply to our non-U.S. subsidiaries could increase income subject to tax, or the tax rate on income, in the United States.  Similarly, changes to the applicable tax laws, treaties or regulations of other countries could subject the income of members of our group to higher rates of tax outside the United States. Additionally, the base erosion and profit shifting (“BEPS”) project currently being undertaken by the Organization for Economic Cooperation and Development (“OECD”) and the European Commission’s investigation into illegal state aid may result in changes to long standing tax principles, which could materially adversely affect our results of operations and financial condition. The recently enacted Bermuda corporate income tax and the Pillar Two worldwide minimum tax currently being enacted around the world are examples of the effects of the BEPS project.

35


Our non-U.S. subsidiaries are treated as CFCs and may subject a U.S. 10% shareholder of our common shares to disadvantageous rules under U.S. federal income tax laws.

The Tax Cuts and Jobs Act of 2017 (“TCJA”) modified certain U.S. tax rules that apply to controlled foreign corporations (“CFCs”). As a result of these changes, each of our non-U.S. subsidiaries is treated as a CFC. If any of our shareholders is a “U.S. 10% shareholder” (as described below) that directly or indirectly owns stock in White Mountains, that shareholder must include in its taxable income each year its pro rata share of our CFC subsidiaries’ “subpart F income” for that year, even if no distributions are received by the U.S. 10% shareholder.
Due to changes made by the TCJA, a shareholder is treated as a U.S. 10% shareholder if the shareholder is a U.S. person who owns directly, indirectly or through constructive ownership rules 10% or more of either the voting power or the total value of our shares. As a result, a U.S. person that owns (directly, indirectly or through constructive ownership rules) 10% or more of our shares will generally be treated as a U.S. 10% shareholder of our CFC subsidiaries, notwithstanding the voting power restrictions of our shares. However, a person that is a U.S. 10% shareholder solely as a result of constructive ownership rules (i.e., such person does not directly or indirectly own stock of White Mountains) should not have a subpart F income inclusion with respect to our CFC subsidiaries.
If you are a U.S. person who might be a U.S. 10% shareholder, we encourage you to consult your own tax advisor concerning the CFC rules.

Proposed regulations could subject U.S. persons who are shareholders to disadvantageous rules under U.S. federal income tax laws pertaining to “related person insurance income”income.”

Proposed regulations issued on January 24, 2022 address the subpart F “related person insurance income” (“RPII”) tax regime. The proposed regulations would expand the scope of relationships giving rise to RPII by treating intra-group reinsurance transactions as generating RPII if a non-U.S. parent entity of the group is majority owned by U.S. persons. If the proposed regulations are finalized as written, U.S. shareholders of the Company could be required to include in their taxable income a proportionate share of White Mountains’s RPII income annually as subpart F income, even if no distributions are received by the U.S. shareholder.
The proposed regulations generally would apply to tax years of corporations beginning on or after the date on which finalized regulations are published in the Federal Register and to tax years of U.S. persons in which or with which those corporations' tax years end. We encourage shareholders who are U.S. persons to consult their own tax advisors concerning the proposed regulations.


33
36


Risks Related to Laws and Regulation

Regulation may have a material adverse effect on our operations and financial condition.

We are subject to supervision and regulation by regulatory authorities in the various jurisdictions in which we conduct business, including state, national and international insurance regulators. Regulatory authorities have broad regulatory, supervisory and administrative powers relating to, among other things, data protection and data privacy, solvency standards, licensing, coverage requirements, policy rates and forms and the form and content of financial reports. Regulatory authorities continue to implement new or enhanced regulatory requirements. Regulatory authorities also may seek to exercise their supervisory or enforcement authority in new or more extensive ways. These actions, if they occur, could affect the competitive market and the way in which we conduct our business and manage our capital and could result in lower revenues and higher costs. As a result, such actions could have a material adverse effect on our results of operations and financial condition.

Bermuda law differs from the laws in effect in the United States and may afford less protection to shareholders.

We are organized under the laws of Bermuda, and a portion of our assets are located outside the United States. As a result, it may not be possible for our shareholders to enforce court judgments obtained in the United States against us based on the civil liability provisions of the federal or state securities laws of the United States, either in Bermuda or in countries other than the United States where we will have assets. In addition, there is some doubt as to whether the courts of Bermuda and other countries would recognize or enforce judgments of U.S. courts obtained against us or our directors or officers based on the civil liabilities provisions of the federal or state securities laws of the United States or would hear actions against us or those persons based on those laws.
Our corporate affairs are governed by the Bermuda Companies Act. The Companies Act differs in some material respects from laws generally applicable to U.S. corporations and shareholders, including the provisions relating to interested directors, amalgamations, mergers and acquisitions, takeovers, shareholder lawsuits and indemnification of directors. Generally, the duties of directors and officers of a Bermuda company are owed to the company only. Shareholders of Bermuda companies generally do not have rights to take action against directors or officers of the company and may only do so in limited circumstances. Class actions and derivative actions are generally not available to shareholders under Bermuda law. The Bermuda courts, however, would ordinarily be expected to permit a shareholder to commence an action in the name of a company to remedy a wrong to the company where the act complained of is alleged to be beyond the corporate power of the company or illegal, or would result in the violation of the company’s memorandum of association or bye-laws. Furthermore, a Bermuda court would ordinarily be expected to permit a shareholder to commence an action that alleges a fraud against non-controllingnoncontrolling shareholders or, for instance, where an act requires the approval of a greater percentage of the company’s shareholders than that which actually approved it.
When the affairs of a company are being conducted in a manner that is oppressive or prejudicial to the interests of some part of the shareholders, one or more shareholders may apply to the Supreme Court of Bermuda, which may make such order as it sees fit, including an order regulating the conduct of the company’s affairs in the future or ordering the purchase of the shares of any shareholders by other shareholders or by the company. Additionally, under our bye-laws and as permitted by Bermuda law, each shareholder has waived any claim or right of action against our directors or officers for any action taken by directors or officers in the performance of their duties, except for actions involving fraud or dishonesty. In addition, the rights of our shareholders and the fiduciary responsibilities of our directors under Bermuda law are not as clearly established as under statutes or judicial precedent in existence in jurisdictions in the United States, particularly the State of Delaware. Therefore, our shareholders may have more difficulty protecting their interests than would shareholders of a corporation incorporated in a jurisdiction within the United States.

We could be materially adversely affected if our controls designed to ensure compliance with guidelines, policies, and legal and regulatory standards are not effective.

Our business is highly dependent on our ability to successfully execute a large number of transactions, many of which are complex. These processes are often subject to internal guidelines and policies and government regulation. A control system, no matter how well designed and operated, can provide only reasonable assurance that the control system’s objectives will be met. If controls are not effective, it could lead to unanticipated risk exposure or damage to our reputation and, consequently, could materially adversely affect our results of operations and financial condition.


3437


Other Risks Related to Our BusinessesWhite Mountains and its Subsidiaries

We may be unable to adequately maintain our systems and safeguard the security of our data, which could adversely impact our ability to operate our business and cause reputational harm and, consequently, could materially adversely affect our results of operations and financial condition.

Because our business and operations rely on secure and efficient information technology systems, we depend on our ability, and the ability of certain third parties including vendors and business partners, to access our computer systems to perform necessary functions such as providing quotes and product pricing, billing and processing transactions, administering claims and reporting our financial results. The functioning of these systems may be impacted by any number of events, including power outages, natural and manmade catastrophes and cyber-attacks.cyber attacks. In the event we are unable to access any of our systems, or any third-party system that we rely upon, our ability to operate our business effectively may be significantly impaired.
Our business also depends upon our ability to securely process, store, transmit and safeguard confidential and proprietary information that is in our possession. This information includes confidential information relating to our business, andas well as personally identifiable information (“PII”) and protected health information (“PHI”) belonging to our employees, customers, claimants and business partners. Because our systems may be vulnerable to a variety of forms of unauthorized access that could result in a data breach, including hackers, computer viruses and other cyber-attacks,cyber attacks, as well as breaches that result from dishonest employees, errors by employees or lost or stolen computer devices, we may not be able to protect the confidentiality of such information.
Third parties present an additional risk of cyber-related events. We outsource certain technological and business process functions to third-party providers. We rely on these third parties to maintain and store PII and PHI and other confidential information on their systems. We also routinely transmit such information by e-mail and other electronic means. Although we attempt to establish sufficient controls and secure capabilities to transmit such information and to prevent unauthorized disclosure, these controls may not be sufficient. Furthermore, third-party providers may not have appropriate controls in place to protect such information.
Our computer systems have been and will continue to be the target of cyber-attacks,cyber attacks, although we are not aware that we have experienced a material cybersecurity breach. We are also not aware of any third-party vendor having experienced a material cybersecurity breach that impacted our data. The risk of a cyber-attackcyber attack may increase, and we may experience more significant attacks in the future.
The risks identified above could expose us to data breaches, disruptions of service, financial losses and significant increases in compliance costs and reputational harm. In addition, a data breach could subject us to legal liability or regulatory action under data protection and privacy laws and regulations enacted by federal, state and foreign governments or other regulatory bodies. As a result, our ability to conduct our business and our results of operations and financial condition could be materially adversely affected.

We may suffer losses from unfavorable outcomes from litigation and other legal proceedings, which could materially adversely affect our results of operations and financial condition.

From time to time we are subject to legal proceedings. In the event of an unfavorable outcome in one or more legal matters, our ultimate liability may be in excess of amounts we have reserved and such additional amounts could materially adversely affect our results of operations and financial condition. Furthermore, it is possible that these legal proceedings could result in equitable remedies or other unexpected outcomes that could materially adversely affect our results of operations and financial condition.

    We depend on our key personnel to manage our business effectively, and they may be difficult to replace, which could materially adversely affect our results of operations and financial condition.

Much of our competitive advantage is based on the expertise, experience and know-how of our key personnel. We do not have fixed term employment agreements with any of our key personnel, or key man life insurance and the loss of one or more of these key personnel could materially adversely affect our results of operations and financial condition. Our success also depends on the ability to hire and retain additional personnel. Difficulty in hiring or retaining personnel could materially adversely affect our results of operations and financial condition.
35


Item 1B.  Unresolved Staff Comments

As of the date of this report, the Company had no unresolved comments from the Commission staff regarding its periodic or current reports under the Exchange Act.

38


Item 1C. Cybersecurity

Risk Management and Strategy

Identifying, assessing and managing cybersecurity risks is an important component of White Mountains’s overall enterprise risk management program. As with the management of risks generally, given our holding company structure, the management of cybersecurity risks involves coordination between the Company and its consolidated subsidiaries/affiliates.
The Company and each of its consolidated subsidiaries/affiliates are responsible for developing a cybersecurity program appropriate for their respective businesses. The design of these cybersecurity programs is informed by the ISO 27001 standards and the Center for Internet Security Critical Security Controls framework (“CISCSC”). This does not imply that these programs meet all specifications of ISO 27001 and CISCSC, but rather that we use them as a guide to help us identify, assess and manage cybersecurity risks relevant to our business. The cybersecurity programs developed by the Company and its consolidated subsidiaries/affiliates include, among other things, (i) advanced threat protection and detection systems; (ii) vulnerability scanning and testing of network defenses; (iii) user authentication, role-based access, and privileged access management; (iv) data encryption, loss prevention, backup and recovery mechanisms; (v) employee testing and training; (vi) technical and business team-focused incident response tabletop exercises; (vii) disaster recovery testing and (viii) security assessments of third-party service providers. White Mountains engages both its internal auditors and third-party information security experts to assist management in assessing the effectiveness of these cybersecurity programs.
Risks from cybersecurity threats may cause material disruptions to our operations and reputational harm, which could materially adversely affect our results of operations and financial condition. See Item 1.A Risk Factors, “We may be unable to adequately maintain our systems and safeguard the security of our data, which could adversely impact our ability to operate our business and cause reputational harm and, consequently, could materially adversely affect our results of operations and financial condition.” on page 38 for more information about these risks.

Governance

White Mountains’s Board of Directors has assigned oversight of the Company’s cybersecurity risk management to the Audit Committee. The Audit Committee receives periodic reports on White Mountains’s cybersecurity risks and any material cybersecurity incidents at the direction of White Mountains’s senior management. In addition, the Audit Committee receives reports addressing cybersecurity risks as part of the Company’s overall enterprise risk management program.
White Mountains’s Information Technology (“IT”) Steering Committee, which includes its Chief Information Security Officer, Chief Technology Officer and various members of senior management, as well as the senior IT leadership at each of its consolidated subsidiaries/affiliates are responsible for assessing and managing White Mountains’s cybersecurity risk. These individuals include IT and cybersecurity professionals with relevant education, including degrees and/or certifications, and prior work experience. These individuals also monitor the prevention, detection, mitigation and remediation of cybersecurity incidents as part of the cybersecurity programs described above.
Senior IT leadership at our consolidated subsidiaries/affiliates communicate information regarding cybersecurity risks to Company personnel through a variety of channels, including discussions between or among subsidiary/affiliate management and the Company, reports made to subsidiary/affiliate boards and direct updates to the Company’s senior management and/or IT Steering Committee.

Item 2.  Properties

The Company maintains two professional offices in Hamilton, Bermuda, which serve as its headquarters and its registered office. The Company’s principal executive office is in Hanover, New Hampshire. In addition, White Mountains maintains a professional office in Guilford, Connecticut, which houses its corporate finance and investment functions, and in Boston, Massachusetts, which houses its corporate accounting, reporting and internal audit functions. All of the Company’s professional offices are leased.
HG Global’s, WM Outrigger Re’s and Ark’s headquarters are located in Hamilton, Bermuda. In addition, Ark maintains underwriting offices in London, England and Hamilton, Bermuda. BAM’s and Kudu’s headquarters are located in New York, New York. NSM’s headquarters are located in Conshohocken, Pennsylvania.
The various offices and facilities of the consolidated Other Operating Businesses are owned or leased. Management considers its office facilities suitable and adequate for its current level of operations.

Item 3.  Legal Proceedings

None.

39


Item 4.  Mine Safety Disclosures

None.

AVAILABLE INFORMATION

The Company is subject to the informational reporting requirements of the Exchange Act. In accordance therewith, the Company files reports, proxy statements and other information with the SEC. These documents are available at www.sec.gov and www.whitemountains.com shortly after such material is electronically filed with or furnished to the SEC. In addition, the Company’s code of business conduct and ethics as well as the various charters governing the actions of certain of the Company’s Committees of its Board of Directors, including its Audit Committee Compensation Committee and Compensation/Nominating and& Governance Committee, are available at www.whitemountains.com.
The Company will provide to any shareholder, upon request and without charge, copies of these documents (excluding any applicable exhibits unless specifically requested). Written or telephone requests should be directed to the Corporate Secretary, White Mountains Insurance Group, Ltd., 26 Reid Street, Hamilton, HM 11 Bermuda, telephone number (441) 278-3160. Additionally, all such documents are physically available at the Company’s registered office at Clarendon House, 2 Church Street, Hamilton, HM 11 Bermuda.

36


Information About Our Executive Officers (AsINFORMATION ABOUT OUR EXECUTIVE OFFICERS (as of February 25, 2022)23, 2024)
NameNamePositionAgeExecutive Officer SinceNamePositionAgeExecutive Officer Since
G. Manning RountreeG. Manning RountreeChief Executive Officer492009G. Manning RountreeChief Executive Officer512009
Reid T. CampbellExecutive Vice President and Chief Financial Officer542007
Liam P. CaffreyLiam P. CaffreyExecutive Vice President and Chief Financial Officer512022
Michaela J. Hildreth
Michaela J. Hildreth
Michaela J. HildrethMichaela J. HildrethManaging Director and Chief Accounting Officer542021Managing Director and Chief Accounting Officer562021
Robert L. SeeligRobert L. SeeligExecutive Vice President and General Counsel532002Robert L. SeeligExecutive Vice President and General Counsel552002

All executive officers of the Company and its subsidiaries are elected by the Board for a term of one year or until their successors have been elected and have duly qualified. Information with respect to the principal occupation and relevant business experience of the Executive Officers follows:
Mr. Rountree was appointed as a director and Chief Executive Officer of the Company in March 2017. Prior to that, he served as an Executive Vice President of the Company and President of WM Capital. He joined White Mountains in 2004 and served as President of WM Advisors from March 2009 until December 2014. Prior to joining White Mountains, Mr. Rountree was a Senior Vice President at Putnam Investments for two years. Prior to joining Putnam Investments, Mr. Rountree spent three years with McKinsey & Company. Mr. Rountree is a director and member of the Group Risk Committee of Admiral Group plc, a large car insurance provider based in the United Kingdom. Mr. Rountree also serves as a director of BAM.
Mr. CampbellCaffrey was appointed Executive Vice President and Chief Financial Officer of the Company in May 2017.March 2022. Prior to joining the Company, Mr. Caffrey served as Chief Executive Officer of Aon’s Global Affinity business. Prior to that, he served as a Managing DirectorChief Financial Officer of WM CapitalAon Risk Solutions globally and as PresidentChief Financial Officer of WM Advisors. He joined White Mountains in 1994 and has served in a variety of financial management positions with the Company and its subsidiaries.Aon Risk Solutions Americas. Prior to joining White Mountains,Aon, Mr. CampbellCaffrey spent three12 years with KPMG. Mr. Campbell serves as a director of BAM. Effective March 1, 2022, Mr. Campbell will retire from his current role and become President of theMcKinsey & Company.
Ms. Hildreth was appointed as Managing Director and Chief Accounting Officer of the Company onin May 15, 2021. Prior to that, she served as Managing Director and General Auditor of WM Capital. She joined White Mountains in 2003 and has served in a variety of accounting and auditing-related positions with the Company and its subsidiaries. Prior to joining the Company, Ms. Hildreth spent 13 years with PricewaterhouseCoopers.
Mr. Seelig is Executive Vice President and General Counsel of the Company. Prior to joining White Mountains in 2002, Mr. Seelig was with the law firm of Cravath, Swaine & Moore.

3740


PART II
 
Item 5.  Market for the Company’s Common Equity, Related Shareholder Matters and Issuer Purchases of Equity Securities

White Mountains’s common shares are listed on the New York Stock Exchange (symbol “WTM”) and the Bermuda Stock Exchange (symbol “WTM-BH”). As of February 23, 2022,21, 2024, there were 232234 registered holders of White Mountains common shares, par value $1.00 per share. For information on securities authorized for issuance under the Company’s equity compensation plans, see “Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters” on page 101.99.
The following graph presents the five-year cumulative total return for a shareholder who invested $100 in common shares as of December 31, 2016,2018, assuming re-investment of dividends. Cumulative returns for the five-year period ended December 31, 20212023 are also shown for the Standard & Poor’s 500 Stocks Capitalization Weighted Index (“S&P 500”) and the Standard & Poor’s 500 Stocks (Property & Casualty) Capitalization Weighted Index (“S&P P&C”) for comparison.

wtm-20211231_g1.jpg

1047
Purchases of Equity Securities by the Company
The following table provides information regarding common shares repurchased by the Company during the fourth quarter
of 2021:2023:
MonthsTotal Number of
Shares Purchased
Average Price
Paid per Share
Total Number of Shares 
Purchased as Part of 
Publicly Announced Plans (1)
Maximum Number
of Shares that May
Yet Be Purchased
Under the Plans (1)
October 1 - October 31, 202111,999 $1,072.72 11,999 451,224 
November 1 - November 30, 2021— $— — 451,224 
December 1 - December 31, 2021— $— — 451,224 
Total11,999 $1,072.72 11,999 451,224 
MonthsTotal Number of
Shares Purchased
Average Price
Paid per Share
Total Number of Shares 
Purchased as Part of 
Publicly Announced Plans (1)
Maximum Number
of Shares that May
Yet Be Purchased
Under the Plans (1)
October 1 - October 31, 2023— $— — 301,014 
November 1 - November 30, 2023— $— — 301,014 
December 1 - December 31, 2023— $— — 301,014 
Total$301,014
(1) White Mountains’s board of directors has authorized the Company to repurchase its common shares, from time to time, subject to market conditions. The repurchase authorizations do not have a stated expiration date.

Item 6.  Selected Financial Data

None.


3841


Item 7.  Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion contains “forward-looking statements”.statements.” White Mountains intends statements that are not historical in nature, which are hereby identified as forward-looking statements, to be covered by the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. White Mountains cannot promise that its expectations in such forward-looking statements will turn out to be correct. White Mountains’s actual results could be materially different from and worse than its expectations. See “FORWARD-LOOKING STATEMENTS” on page 9795 for specific important factors that could cause actual results to differ materially from those contained in forward-looking statements.
The following discussion also includes thirteenfive non-GAAP financial measures: (i) adjusted book value per share, (ii) growth in adjusted book value per share excluding net realized and unrealized investment losses from White Mountains’s investment in MediaAlpha, (iii) BAM’s gross written premiums and MSC from new business, (iv) Ark’s adjusted loss and loss adjustment expense ratio, (v) Ark’s adjusted insurance acquisition expense ratio, (vi) Ark’s adjusted other underwriting expense ratio, (vii) Ark’s adjusted combined ratio, (viii) NSM’sKudu’s earnings before interest, taxes, depreciation and amortization (“EBITDA”), (ix) NSM’s adjusted EBITDA, (x) Kudu’s EBITDA, (xi)(iii) Kudu’s adjusted EBITDA, (xii)(iv) total consolidated portfolio returns excluding MediaAlpha and (xiii)(v) adjusted capital, that have been reconciled from their most comparable GAAP financial measures on page 71.73. White Mountains believes these measures to be useful in evaluating White Mountains’s financial performance and condition.

RESULTS OF OPERATIONS FOR THE YEARS ENDED DECEMBER 31, 2021, 20202023, 2022 AND 20192021

Overview—Year Ended December 31, 20212023 versus Year Ended December 31, 20202022
White Mountains ended 20212023 with book value per share of $1,176$1,656 and adjusted book value per share of $1,190, a decrease of 6.5%$1,704. During 2023, book value per share and 5.7% in the year,adjusted book value per share both increased 14%, including dividends. Comprehensive income (loss) income attributable to common shareholders was $(273)$511 million in 20212023 compared to $716$788 million in 2020.2022.
Results in 2023 were driven primarily by good results from White Mountains’s operating businesses and strong returns in the investment portfolio. Results in 2022 were driven primarily by the net gain of $876 million from the NSM Transaction. Results in the year ended December 31, 2023 also included $27 million of unrealized investment gains (losses) from White Mountains’s investment in MediaAlpha compared to $(93) million in the year ended December 31, 2022.
As of December 31, 2023, White Mountains’s undeployed capital was approximately $0.5 billion reflecting the Bamboo Transaction and redeployment to WM Outrigger Re.
In the HG Global/BAM segment, gross written premiums and MSC collected totaled $131 million in 2023 compared to $147 million in 2022. Total pricing was 84 basis points in 2023 compared to 91 basis points in 2022. BAM insured municipal bonds with par value of $15.6 billion in 2023 compared to $16.0 billion in 2022. BAM’s total claims paying resources were $1,501 million as of December 31, 2023 compared to $1,423 million as of December 31, 2022. In December 2023, BAM made a $27 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. In December 2022, BAM made a $36 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. In July 2023, Standard & Poor’s affirmed BAM’s “AA/stable” rating.
Ark’s combined ratio was 82% in both 2023 and 2022. The resultscombined ratio in 20212023 included $380two points of unfavorable prior year loss reserve development compared to six points of favorable prior year loss reserve development in 2022. The combined ratio for 2023 included two points of catastrophe losses, which included losses from Hurricane Idalia, the Maui wildfires, Hurricane Otis and various smaller events, compared to 13 points in 2022, driven primarily by losses from Hurricane Ian and the conflict in Ukraine. Ark reported gross written premiums of $1,898 million, net written premiums of $1,411 million and net earned premiums of $1,305 million in 2023 compared to gross written premiums of $1,452 million, net written premiums of $1,195 million and net earned premiums of $1,043 million in 2022. Ark reported pre-tax income of $249 million in 2023 compared to $95 million in 2022. In December 2023, AM Best affirmed Ark’s financial strength rating at “A/stable.” In the 2024 renewal period to date, Ark wrote gross written premiums in excess of $700 million, with risk adjusted rate change of 3%.
WM Outrigger Re’s combined ratio was 44% in 2023. WM Outrigger Re reported gross and net written premiums of $110 million, net earned premiums of $104 million and pre-tax income of $69 million in 2023. During the fourth quarter of 2023, White Mountains agreed to redeploy $130 million into Outrigger Re Ltd. for business written in the 2024 underwriting year.
Kudu reported total revenues of $177 million, pre-tax income of $137 million and adjusted EBITDA of $57 million in 2023 compared to total revenues of $119 million, pre-tax income of $89 million and adjusted EBITDA of $42 million in 2022. Total revenues and pre-tax income in 2023 included $71 million of net investment income and $106 million of net realized and unrealized investment losses from White Mountains’s investmentgains compared to $54 million and $64 million in MediaAlpha. Excluding net realized and unrealized investment losses from White Mountains’s investment2022.
Kudu deployed $172 million, including transaction costs, into seven asset management firms in MediaAlpha, adjusted book value per share increased 4.3% in 2021, including dividends, reflecting strong results within White Mountains’s operating businesses. The results in 2020 included $746 million2023. As of net investment income and net realized and unrealized investment gains from White Mountains’s investment in MediaAlpha. The results in 2020 also included $131 million from the release of a deferred tax liability as a result of an internal reorganization in connection with the MediaAlpha IPO.
At the December 31, 20212023, Kudu had deployed $884 million into 25 asset and wealth management firms globally, including three that have been exited. As of December 31, 2023, the asset and wealth management firms have combined assets under management of approximately $104 billion, spanning a range of asset classes.

42


During the second quarter of 2023, White Mountains completed a tender offer to purchase 5.9 million additional shares of MediaAlpha at a purchase price of $10.00 per share. As of December 31, 2023, White Mountains owned 22.9 million shares of MediaAlpha, representing a 34.9% basic ownership interest (33.1% on a fully-diluted/fully-converted basis). As of December 31, 2023, MediaAlpha’s closing price of $15.44was $11.15 per share, which was downincreased from $39.07 at$9.95 per share as of December 31, 2020, the2022. The carrying value of White Mountains’s investment in MediaAlpha was $262$255 million which was down from $802 million atas of December 31, 2020.2023, which increased from $169 million as of December 31, 2022. Based on White Mountains’s ownership of 16.9 million shares of MediaAlpha as of December 31, 2021,2023, each $1.00 per share increase or decrease in the stock price of MediaAlpha will result in an approximate $5.65$9.00 per share increase or decrease in White Mountains’s book value per share and adjusted book value per share.
White Mountains’s total consolidated portfolio return on invested assets, both including and excluding White Mountains’s investment in MediaAlpha, was 11.4% in 2023. The total consolidated portfolio return included $27 million of net unrealized investment gains from White Mountains’s investment in MediaAlpha in 2023. Excluding MediaAlpha, investment returns in 2023 were driven primarily by net investment income and net realized and unrealized investment gains from the other long-term investments and fixed income portfolios.
White Mountains’s total consolidated portfolio return on invested assets was -1.6% in 2022, which included $93 million of net unrealized investment losses from White Mountains’s investment in MediaAlpha. Excluding MediaAlpha, the total consolidated portfolio return on invested assets was 0.3% in 2022. Excluding MediaAlpha, investment returns in 2022 were driven primarily by net investment income and net realized and unrealized gains from other long-term investments, which more than offset net unrealized investment losses in the fixed income portfolio due to rising interest rates.
During 2023, White Mountains repurchased and retired 24,165 of its common shares for $33 million at an average share price of $1,354.88, or 82% of White Mountains’s book value per share and 80% of White Mountains’s adjusted book value per share as of December 31, 2023.
On December 27, 2023, Bermuda enacted a 15% corporate income tax that will generally become effective on January 1, 2025. White Mountains expects to meet the requirements to be exempt from the Bermuda corporate income tax and the Pillar Two worldwide minimum tax until January 1, 2030. The Bermuda legislation also provides for an economic transition adjustment that will reduce future years’ taxable income. Under GAAP, this economic transition adjustment was required to be recognized as a net deferred tax asset as of December 31, 2023. Accordingly, White Mountains’s net income for 2023 included a net deferred tax benefit of $68 million, of which $51 million was recorded at Ark and $17 million was recorded at HG Global. This tax benefit increased both book value per share and adjusted book value per share by approximately $14, net of noncontrolling interest and the impact on the fair value of Ark’s contingent consideration.

Overview—Year Ended December 31, 2022 versus Year Ended December 31, 2021
White Mountains ended 2022 with book value per share of $1,457 and adjusted book value per share of $1,495. During 2022, book value per share increased 24% and adjusted book value per share increased 26%, including dividends. Comprehensive income (loss) attributable to common shareholders was $788 million in 2022 compared to $(273) million in 2021.
Results in 2022 were driven primarily by the net gain from the NSM Transaction. On August 1, 2022, White Mountains closed the NSM Transaction.White Mountains received $1.4 billion in net cash proceeds at closing and recognized a net gain of $876 million in the third quarter of 2022, which was comprised of $887 million of net gain from sale of discontinued operations and $3 million of comprehensive income related to the recognition of foreign currency translation gains (losses) from the sale, partially offset by $14 million of compensation and other costs related to the transaction recorded in Other Operations. Results in 2021 were driven primarily by $380 million of net realized and unrealized investment losses from White Mountains’s investment in MediaAlpha.
During 2022, White Mountains repurchased and retired 461,256 of its common shares for $616 million at an average share price of $1,335.11, or 92% of White Mountains’s book value per share and 89% of White Mountains’s adjusted book value per share as of December 31, 2022. As of December 31, 2022, White Mountains’s undeployed capital was approximately $0.9 billion.
43


In the HG Global/BAM segment, gross written premiums and MSC collected totaled $147 million in 2022 compared to $118 million in 2021. Total pricing was 91 basis points in 2022 compared to 67 basis points in 2021. BAM insured municipal bonds with par value of $16.0 billion in 2022 compared to $17.5 billion in 2021. During 2022, BAM completed an assumed reinsurance transaction to insure municipal bonds with a par value of $43 million. During 2021, BAM completed an assumed reinsurance transaction to insure municipal bonds with a par value of $806 million. BAM’s total claims paying resources were $1,423 million as of December 31, 2022 compared to $1,192 million as of December 31, 2021. During 2022 and 2021, BAM completed reinsurance agreements with Fidus Re that increased BAM’s claims paying resources by $150 million in each year. In December 2022, BAM made a $36 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. In December 2021, BAM made a $34 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. In June 2022, Standard & Poor’s affirmed BAM’s “AA/stable” rating.
Ark’s combined ratio was 82% in 2022 compared to 87% in 2021. The combined ratio in 2022 included six points of favorable prior year loss reserve development compared to three points in 2021. The combined ratio for 2022 included 13 points of catastrophe losses compared to 10 points in 2021. Catastrophe losses in 2022 included $45 million related to the conflict in Ukraine and $44 million related to Hurricane Ian on a net basis after reinstatement premiums. Ark reported gross written premiums of $1,452 million, net written premiums of $1,195 million and net earned premiums of $1,043 million in 2022 compared to gross written premiums of $1,059 million, net written premiums of $859 million and net earned premiums of $637 million in 2021. Ark reported pre-tax income of $95 million in 2022 compared to $53 million in 2021, which reflected $25 million of transaction expenses related to the Ark Transaction. In December 2022, AM Best affirmed Ark’s financial strength rating at “A/stable.” In the January 2023 renewal season, Ark wrote gross written premiums in excess of $575 million, with risk adjusted rate change of 15%.
During the fourth quarter of 2022, White Mountains invested $205 million into Outrigger Re Ltd., a newly-formed Bermuda special purpose insurer that provided reinsurance protection on a portion of Ark’s Bermuda global property catastrophe portfolio written in the 2023 underwriting year.
Kudu reported total revenues of $119 million, pre-tax income of $89 million and adjusted EBITDA of $42 million in 2022 compared to total revenues of $134 million, pre-tax income of $108 million and adjusted EBITDA of $33 million in 2021. Total revenues and pre-tax income in 2022 included $54 million of net investment income and $64 million of net realized and unrealized investment gains compared to $44 million and $90 million in 2021. Kudu deployed $101 million, including transaction costs, into five asset management firms in 2022. As of December 31, 2022, Kudu had deployed $713 million into 20 asset and wealth management firms globally, including two that have been exited. As of December 31, 2022, the asset and wealth management firms have combined assets under management of approximately $74 billion, spanning a range of asset classes.
White Mountains’s investment in MediaAlpha was $169 million as of December 31, 2022 at the closing price of $9.95 per share, compared to $262 million as of December 31, 2021 at the closing price of $15.44 per share. On March 23, 2021, MediaAlpha completed a secondary offering of 8.05 million shares at $46.00 per share ($44.62 per share net of underwriting fees). In the secondary offering, White Mountains sold 3.6 million shares for net proceeds of $160 million.
White Mountains capital baseMountains’s total consolidated portfolio return on invested assets was more or less, fully deployed at the end of 2020 with approximately $150-1.6% in 2022, which included $93 million of undeployed capital. During 2021,net unrealized investment losses from White Mountains repurchasedMountains’s investment in MediaAlpha. Excluding MediaAlpha, the total consolidated portfolio return on invested assets was 0.3% in 2022. Excluding MediaAlpha, investment returns in 2022 were driven primarily by net investment income and retired 98,511 of its common shares for $108 million. This wasnet realized and unrealized gains from other long-term investments, which more than offset by (i) the $160 million of net proceeds from the MediaAlpha secondary offering and (ii) the termination of White Mountains commitment to provide up to $200 million of additional equity capital to Ark as a result of Ark raising $163 million in new subordinated debt during the third quarter. As a result, White Mountains finished 2021 with approximately $400 million of undeployed capital.
In the HG Global/BAM segment, gross written premiums and MSC collected totaled $118 million in 2021 compared to $131 million in 2020. Total pricing was 67 basis points in 2021 compared to 76 basis points in 2020. BAM insured municipal bonds with par value of $17.5 billion in 2021 compared to $17.3 billion in 2020. During 2021, BAM completed an assumed reinsurance transaction to insure municipal bonds with a par value of $806 million. During 2020, BAM completed an assumed reinsurance transaction to insure municipal bonds with a par value of $37 million.
In December 2021, BAM made a $34 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. In December 2020, BAM made a $30 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. In January 2020, BAM made a one-time $65 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. BAM’s total claims paying resources were $1,192 million as of December 31, 2021 compared to $987 million as of December 31, 2020. During 2021, BAM completed a reinsurance agreement with Fidus Re that increased BAM’s claims paying resources by $150 million.

39


On January 1, 2021, White Mountains closed the Ark Transaction. Ark’s GAAP combined ratio was 87% in 2021. Ark’s adjusted combined ratio, which adds back amounts ceded to TPC Providers, was 85% in 2021. The adjusted combined ratio in 2021 included 10 points of catastropheunrealized investment losses and six points of net favorable prior year reserve development. Ark reported gross written premiums of $1,059 million, net written premiums of $859 million and net earned premiums of $637 million in 2021. Ark reported pre-tax income of $53 million in 2021, which reflected $25 million of transaction expenses related to the Ark Transaction. In the January 2022 renewal season, Ark wrote gross written premiums in excess of $500 million.
NSM reported commission and other revenues of $330 million, pre-tax loss of $28 million and adjusted EBITDA of $71 million in 2021 compared to commission and other revenues of $285 million, pre-tax loss of $13 million and adjusted EBITDA of $59 million in 2020. On April 12, 2021, NSM sold its Fresh Insurance motor business, which resulted in a loss of $29 million recorded in the first quarter of 2021. Results in 2021 include the results of J.C. Taylor from August 6, 2021, the date of its acquisition. Results in 2021 and 2020 include the results of Kingsbridge from April 7, 2020, the date of its acquisition.
Kudu reported total revenues of $134 million, pre-taxfixed income of $108 million and adjusted EBITDA of $33 million in 2021 comparedportfolio due to total revenues of $46 million, pre-tax income of $28 million and adjusted EBITDA of $22 million in 2020. Total revenues and pre-tax income included $22 million of realized gains and $68 million of unrealized gains on Kudu’s Participation Contracts in 2021 compared to $16 million of unrealized gains on Kudu’s Participation Contracts in 2020. Kudu deployed $225 million, including transaction costs, in six asset management firms in 2021. As of December 31, 2021, Kudu had deployed $612 million in 17 asset and wealth management firms globally, including one that was exited. As of December 31, 2021, the asset and wealth management firms have combined assets under management of approximately $66 billion, spanning a range of asset classes, including real estate, real assets, wealth management, hedge funds, private equity and alternative credit strategies.rising interest rates.
White Mountains’s pre-tax total consolidated portfolio return on invested assets was -3.4% in 2021. This return2021, which included $380 million of net realized and unrealized investment losses from White Mountains’s investment in MediaAlpha. Excluding MediaAlpha, the total consolidated portfolio return on invested assets was 6.4% in 2021. Excluding MediaAlpha, investment returns in 2021 were driven primarily by favorable other long-term investments results.
White Mountains’s pre-tax total consolidated portfolio return on invested assets was 31.9% in 2020. This return included $746 million of net investment income and net realized and unrealized investment gains from White Mountains’s investment in MediaAlpha. Excluding MediaAlpha, the total consolidated portfolio return on invested assets was 4.6% in 2020. Excluding MediaAlpha, investment returns in 2020 were impacted by White Mountains’s decision to liquidate its portfolio of common equity securities in the second half of 2020 in preparation for funding the Ark Transaction as equity markets rallied in the fourth quarter.

Overview—Year Ended December 31, 2020 versus Year Ended December 31, 2019
White Mountains ended 2020 with book value per share of $1,259 and adjusted book value per share of $1,264, an increase of 23.1% and 24.2% in the year, including dividends. Comprehensive income (loss) attributable to common shareholders was $716 million in 2020 compared to $413 million in 2019. The results in 2020 included $746 million of net investment income and net realized and unrealized investment gains from White Mountains’s investment in MediaAlpha. The results in 2020 also included $131 million from the release of a deferred tax liability as a result of an internal reorganization in connection with the MediaAlpha IPO. The results in 2019 included $256 million of net investment income, realized gains and net unrealized investment gains from White Mountains’s investment in MediaAlpha, $182 million of which was from the 2019 MediaAlpha Transaction.
On October 30, 2020, MediaAlpha completed the MediaAlpha IPO. In the offering, White Mountains sold 3.6 million shares and received total proceeds of $64 million. Following the MediaAlpha IPO, White Mountains owned 20.5 million MediaAlpha shares. At the December 31, 2020 MediaAlpha closing price of $39.07 per share, the value of White Mountains’s remaining investment in MediaAlpha was $802 million.
On October 1, 2020, White Mountains entered into a subscription and purchase agreement (the “Ark SPA”) with Ark and certain selling shareholders (collectively with Ark, the “Ark Sellers”). Under the terms of the Ark SPA, White Mountains agreed to contribute $605 million of equity capital to Ark, at a pre-money valuation of $300 million, and to purchase $41 million of shares from the Ark Sellers. White Mountains also agreed to contribute up to an additional $200 million of equity capital to Ark in 2021. In accordance with the Ark SPA, in the fourth quarter of 2020 White Mountains pre-funded/placed in escrow a total of $646 million in preparation for closing the transaction, which is reflected on the balance sheet within the Other Operations segment as of December 31, 2020.other long-term investments.

4044


On January 1, 2021, White Mountains closed the Ark Transaction in accordance with the terms of the Ark SPA. At closing, White Mountains owned 72.0% of Ark on a basic shares outstanding basis (63.0% after taking account of management’s equity incentives). Management’s equity incentives are subject to an 8% rate of return threshold with no catch-up. The remaining shares are owned by employees. In the future, management rollover shareholders could earn additional shares in Ark if and to the extent that White Mountains achieves certain multiple of invested capital return thresholds. These additional shares are generally eligible to vest in three equal tranches at multiple on invested capital (“MOIC”) thresholds of 2.0x, 2.5x and 3.0x. If fully earned, these additional shares would represent 13% of the shares outstanding at closing.
In the January 2021 renewal season, Ark wrote gross written premiums in excess of $270 million.
During 2020, White Mountains deployed approximately $1.0 billion in new business opportunities, including commitments related to the Ark Transaction, which closed on January 1, 2021. Also during 2020, White Mountains repurchased and retired 99,087 of its common shares for $85 million. As a result, White Mountains’s capital base was, more or less fully deployed at the end of 2020 with approximately $150 million of undeployed capital.
Gross written premiums and MSC collected in the HG Global/BAM segment totaled $131 million in 2020 compared to $107 million in 2019. Total pricing was 76 basis points in 2020 compared to 83 basis points in 2019. BAM insured municipal bonds with par value of $17.3 billion in 2020 compared to $12.8 billion in 2019. During 2020, BAM completed an assumed reinsurance transaction to insure municipal bonds with a par value of $37 million. During 2019, BAM completed an assumed reinsurance transaction to insure municipal bonds with a par value of $1.1 billion.
In December 2020, BAM made a $30 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. In January 2020, BAM made a one-time $65 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. In December 2019, BAM made a $32 million cash payment (which included a one-time $10 million cash payment) of principal and interest on the BAM Surplus Notes held by HG Global. BAM’s total claims paying resources were $987 million as of December 31, 2020 compared to $938 million as of December 31, 2019.
NSM reported commission and other revenues of $285 million, pre-tax loss of $13 million and adjusted EBITDA of $59 million in 2020 compared to commission and other revenues of $233 million, pre-tax loss of $2 million and adjusted EBITDA of $48 million in 2019. Results in the year ended December 31, 2020 include the results of Kingsbridge from April 7, 2020, the date of its acquisition. Results in the years ended December 31, 2020 and 2019include the results of Embrace, a nationwide provider of pet health insurance for dogs and cats, from April 1, 2019, the date of its acquisition.
Kudu reported total revenues of $46 million, pre-tax income of $28 million and adjusted EBITDA of $22 million in 2020 compared to total revenues of $21 million, pre-tax income of $11 million and adjusted EBITDA of $9 million for the period from April 4, 2019, the date of the Kudu Transaction, through December 31, 2019. Total revenues and pre-tax income included $16 million of unrealized gains on Kudu’s Participation Contracts in 2020 compared to $6 million in the period from April 4, 2019 to December 31, 2019. Kudu deployed $121 million, including transaction costs, in five asset management firms in 2020. As of December 31, 2020, Kudu had deployed a total of $386 million, including transaction costs, in 13 asset management firms with combined assets under management of approximately $45 billion.
White Mountains’s pre-tax total return on invested assets was 31.9% in 2020. This return included $746 million of net investment income and net realized and unrealized investment gains from MediaAlpha. Excluding MediaAlpha, the total return on invested assets was 4.6% in 2020. Investment returns in 2020 were impacted by White Mountains’s decision to liquidate its portfolio of common equity securities in the second half of 2020 in preparation for funding the Ark Transaction as equity markets rallied in the fourth quarter.
White Mountains’s pre-tax total return on invested assets was 20.4% in 2019. This return included $188 million of net investment income and net unrealized investment gains from MediaAlpha. Excluding MediaAlpha, the total return on invested assets was 13.0% in 2019. Investment returns in 2019 benefited from White Mountains’s decision to increase equity exposure after markets declined sharply at the end of 2018 ahead of the strong rally in equity markets during 2019.

41


Adjusted Book Value Per Share

The following table presents White Mountains’s adjusted book value per share, a non-GAAP financial measure, as of December 31, 2021, 20202023, 2022 and 20192021 and reconciles this non-GAAP measure tofrom book value per share, the most comparable GAAP measure. See “NON-GAAP FINANCIAL MEASURES” on page 71.73.
December 31,
202120202019
December 31,December 31,
2023202320222021
Book value per share numerators (in millions):Book value per share numerators (in millions):
White Mountains’s common shareholders’ equity -
GAAP book value per share numerator
White Mountains’s common shareholders’ equity -
GAAP book value per share numerator
$3,548.1 $3,906.0 $3,261.5 
Time-value of money discount on expected future payments
on the BAM Surplus Notes (1)
(125.9)(142.5)(151.6)
White Mountains’s common shareholders’ equity -
GAAP book value per share numerator
White Mountains’s common shareholders’ equity -
GAAP book value per share numerator
HG Global’s unearned premium reserve (1)
HG Global’s unearned premium reserve (1)
214.6 190.0 156.7 
HG Global’s net deferred acquisition costs (1)
HG Global’s net deferred acquisition costs (1)
(60.8)(52.4)(41.5)
Time-value of money discount on expected future payments
on the BAM Surplus Notes (1)
Adjusted book value per share numeratorAdjusted book value per share numerator$3,576.0 $3,901.1 $3,225.1 
Book value per share denominators (in thousands of shares):Book value per share denominators (in thousands of shares):
Common shares outstanding - GAAP book value per share denominator
Common shares outstanding - GAAP book value per share denominator
Common shares outstanding - GAAP book value per share denominatorCommon shares outstanding - GAAP book value per share denominator3,017.8 3,102.0 3,185.4 
Unearned restricted common sharesUnearned restricted common shares(13.7)(14.8)(18.5)
Adjusted book value per share denominatorAdjusted book value per share denominator3,004.1 3,087.2 3,166.9 
GAAP book value per shareGAAP book value per share$1,175.73 $1,259.18 $1,023.91 
Adjusted book value per shareAdjusted book value per share$1,190.39 $1,263.64 $1,018.41 
Year-to-date dividends paid per shareYear-to-date dividends paid per share$1.00 $1.00 $1.00 
(1) Amounts reflectsreflect White Mountains’s preferred share ownership in HG Global of 96.9%.

Goodwill and Other Intangible Assets

The following tablestable presents goodwill and other intangible assets that are included in White Mountains’s adjusted book value as of December 31, 2021, 20202023, 2022 and 2019:2021:
December 31,
December 31,December 31,
MillionsMillions202120202019Millions202320222021
Goodwill:Goodwill:
ArkArk$116.8 $— $— 
NSM503.2 506.4 381.6 
Ark
Ark
KuduKudu7.6 7.6 7.6 
Other OperationsOther Operations17.9 11.5 5.5 
Total goodwillTotal goodwill645.5 525.5 394.7 
Other intangible assets:Other intangible assets:
ArkArk175.7 — — 
NSM222.2 230.4 241.4 
Ark
Ark
KuduKudu1.3 1.6 2.0 
Other OperationsOther Operations21.2 24.9 16.6 
Total other intangible assetsTotal other intangible assets420.4 256.9 260.0 
Total goodwill and other intangible assets (1)
Total goodwill and other intangible assets (1)
1,065.9 782.4 654.7 
Total goodwill and other intangible assets attributed to non-controlling
interests
(117.6)(28.1)(23.4)
Total goodwill and other intangible assets attributed to noncontrolling
interests (2)
Total goodwill and other intangible assets attributed to noncontrolling
interests (2)
Total goodwill and other intangible assets attributed to noncontrolling
interests (2)
Total goodwill and other intangible assets included in White Mountains’s
common shareholders’ equity
Total goodwill and other intangible assets included in White Mountains’s
common shareholders’ equity
$948.3 $754.3 $631.3 
(1) See Note 4 — “Goodwill and Other Intangible Assets” on page F-32F-31 for details of other intangible assets.
(2) Amounts reflect the basic ownership percentage of the noncontrolling shareholders.


4245


Summary of Consolidated Results

The following table presents White Mountains’s consolidated financial results by industry for the years ended December 31, 2021, 20202023, 2022 and 2019:2021:
Year Ended December 31,
Year Ended December 31,Year Ended December 31,
MillionsMillions202120202019Millions202320222021
Revenues
Revenues:
Financial Guarantee revenues
Financial Guarantee revenues
Financial Guarantee revenuesFinancial Guarantee revenues$23.0 $68.5 $66.6 
P&C Insurance and Reinsurance revenuesP&C Insurance and Reinsurance revenues668.5 — — 
Specialty Insurance Distribution revenues330.4 285.1 233.1 
Asset Management revenuesAsset Management revenues134.0 45.7 21.2 
Marketing Technology revenues — 48.8 
Other Operations revenues
Other Operations revenues
Other Operations revenuesOther Operations revenues(211.1)781.4 523.7 
Total revenuesTotal revenues944.8 1,180.7 893.4 
Expenses
Expenses:
Financial Guarantee expenses
Financial Guarantee expenses
Financial Guarantee expensesFinancial Guarantee expenses65.4 63.8 56.6 
P&C Insurance and Reinsurance expensesP&C Insurance and Reinsurance expenses615.6 — — 
Specialty Insurance Distribution expenses358.5 297.7 235.2 
Asset Management expensesAsset Management expenses26.5 18.1 10.4 
Marketing Technology expenses — 54.9 
Other Operations expenses
Other Operations expenses
Other Operations expensesOther Operations expenses180.8 155.9 131.2 
Total expensesTotal expenses1,246.8 535.5 488.3 
Pre-tax income (loss)Pre-tax income (loss)
Financial Guarantee pre-tax income (loss)Financial Guarantee pre-tax income (loss)(42.4)4.7 10.0 
Financial Guarantee pre-tax income (loss)
Financial Guarantee pre-tax income (loss)
P&C Insurance and Reinsurance pre-tax income (loss)P&C Insurance and Reinsurance pre-tax income (loss)52.9 — — 
Specialty Insurance Distribution pre-tax income (loss)(28.1)(12.6)(2.1)
Asset Management, pre-tax income (loss)Asset Management, pre-tax income (loss)107.5 27.6 10.8 
Marketing Technology pre-tax income (loss) — (6.1)
Other Operations pre-tax income (loss)Other Operations pre-tax income (loss)(391.9)625.5 392.5 
Total pre-tax income (loss)(302.0)645.2 405.1 
Other Operations pre-tax income (loss)
Other Operations pre-tax income (loss)
Total pre-tax income (loss) from continuing operations
Income tax (expense) benefitIncome tax (expense) benefit(38.6)20.5 (29.3)
Net income (loss) from continuing operationsNet income (loss) from continuing operations(340.6)665.7 375.8 
Gain (loss) on sale of discontinued operations, net of tax18.7 (2.3).8 
Net income (loss) from discontinued operations, net of tax - NSM Group
Net gain (loss) from sale of discontinued operations, net of tax - NSM Group
Net gain (loss) from sale of discontinued operations, net of tax - Sirius Group
Net income (loss)Net income (loss)(321.9)663.4 376.6 
Net (income) loss attributable to non-controlling interests46.5 45.3 37.9 
Net (income) loss attributable to noncontrolling interests
Net income (loss) attributable to White Mountains’s common shareholdersNet income (loss) attributable to White Mountains’s common shareholders(275.4)708.7 414.5 
Other comprehensive income (loss), net of taxOther comprehensive income (loss), net of tax1.9 7.3 (1.4)
Other comprehensive income (loss) from discontinued
operations, net of tax - NSM Group
Net gain (loss) from foreign currency translation from sale of discontinued operations,
net of tax - NSM Group
Comprehensive income (loss)Comprehensive income (loss)(273.5)716.0 413.1 
Comprehensive (income) loss attributable to non-controlling interests.2 (.5)— 
Other comprehensive (income) loss attributable to noncontrolling interests
Comprehensive income (loss) attributable to White Mountains’s
common shareholders
Comprehensive income (loss) attributable to White Mountains’s
common shareholders
$(273.3)$715.5 $413.1 



4346


I. Summary of Operations By SegmentSUMMARY OF OPERATIONS BY SEGMENT

As of December 31, 2021,2023, White Mountains conducted its operations through fivethree segments: (1) HG Global/BAM, (2) Ark,Ark/WM Outrigger and (3) NSM, (4) Kudu, with our remaining operating businesses, holding companies and (5)other assets included in Other Operations. In addition, MediaAlpha was consolidated as a reportableWhite Mountains has made its segment until the datedetermination based on consideration of the 2019 MediaAlpha Transaction. A discussionfollowing criteria: (i) the nature of the business activities of each of the Company’s subsidiaries and affiliates; (ii) the manner in which the Company’s subsidiaries and affiliates are organized; (iii) the existence of primary managers responsible for specific subsidiaries and affiliates; and (iv) the organization of information provided to the Company’s chief operating decision makers and its Board of Directors. Significant intercompany transactions among White Mountains’s consolidated investment operations is included after the discussion of operations by segment.segments have been eliminated herein. White Mountains’s segment information is presented in Note 1615 — “Segment Information” on page F-68.F-63 to the Consolidated Financial Statements.
During the fourth quarter of 2022, Ark sponsored the formation of Outrigger Re Ltd. to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2023 underwriting year. During the fourth quarter of 2023, Ark renewed Outrigger Re Ltd. for the 2024 underwriting year.White Mountains consolidates its segregated account of Outrigger Re Ltd., WM Outrigger Re, in its financial statements. WM Outrigger Re’s quota share reinsurance agreement with GAIL eliminates in White Mountains’s consolidated financial statements. WM Outrigger Re exclusively provides reinsurance protection to Ark. As a result, WM Outrigger Re was aggregated with Ark within the Ark/WM Outrigger segment starting in 2023. See Note 2 — “Significant Transactions.”
As a result of the NSM Transaction, the results of operations for NSM, previously reported as a segment, have been classified as discontinued operations in the statements of operations and comprehensive income through the closing of the transaction in 2022. See Note 20 — “Held for Sale and Discontinued Operations” on page F-70.
Prior period amounts have been reclassified to conform to the current period’s presentation.
As a result of the Ark Transaction, White Mountains began consolidating Ark in its financial statements as of January 1,
2021. See Note 2 — “Significant Transactions” on page F-17.F-17.
As a resultA discussion of the Kudu Transaction, White Mountains began consolidating Kudu in its financial statements in the second quarter of 2019. White Mountains’s segment disclosures forconsolidated investment operations is included after the year ended December 31, 2019 include Kudu’s resultsdiscussion of operations for the period from April 4, 2019, the date of the Kudu Transaction, to December 31, 2019. See Note 2 — “Significant Transactions” on page F-17
As a result of the 2019 MediaAlpha Transaction, White Mountains no longer consolidated MediaAlpha, and consequently it was no longer a reportableby segment. White Mountains’s segment disclosures for the year ended December 31, 2019 include MediaAlpha’s results of operations for the period from January 1, 2019 to February 26, 2019, the date of the 2019 MediaAlpha Transaction. See Note 2 — “Significant Transactions” on page F-17.

HG Global/BAM

The following tables present the components of pre-tax income (loss) included in White Mountains’sthe HG Global/BAM segment related to the consolidation of HG Global, which includes HG Re and its other wholly-owned subsidiaries, and BAM for the years ended December 31, 2021, 20202023, 2022 and 2019:2021:
December 31, 2021 December 31, 2023
MillionsMillionsHG GlobalBAMEliminationsTotalMillionsHG GlobalBAMEliminationsTotal
Direct written premiumsDirect written premiums$— $51.2 $— $51.2 
Assumed written premiumsAssumed written premiums47.6 4.6 (47.6)4.6 
Gross written premiumsGross written premiums47.6 55.8 (47.6)55.8 
Ceded written premiumsCeded written premiums— (47.6)47.6 — 
Net written premiumsNet written premiums$47.6 $8.2 $— $55.8 
Earned insurance and reinsurance premiumsEarned insurance and reinsurance premiums$22.2 $4.7 $— $26.9 
Net investment income (loss)Net investment income (loss)7.2 10.3 — 17.5 
Net investment income (loss) - BAM Surplus Notes12.0 — (12.0) 
Net investment income (loss) – BAM Surplus Notes
Net realized and unrealized investment gains (losses)Net realized and unrealized investment gains (losses)(13.7)(9.2)— (22.9)
Other revenuesOther revenues.5 1.0 — 1.5 
Total revenuesTotal revenues28.2 6.8 (12.0)23.0 
Insurance and reinsurance acquisition expensesInsurance and reinsurance acquisition expenses5.7 2.6 — 8.3 
General and administrative expensesGeneral and administrative expenses2.0 55.1 — 57.1 
Interest expense - BAM Surplus Notes— 12.0 (12.0) 
Interest expense (1)
Interest expense – BAM Surplus Notes
Total expensesTotal expenses7.7 69.7 (12.0)65.4 
Pre-tax income (loss)Pre-tax income (loss)$20.5 $(62.9)$— $(42.4)
Supplemental information:Supplemental information:
MSC collected (1)
$— $62.2 $— $62.2 
MSC collected (2)
MSC collected (2)
MSC collected (2)
(1)Amount includes $0.5 of intercompany interest expense that is eliminated in White Mountains’s consolidated financial statements. For segment reporting, HG Global’s intercompany interest expense included within the HG Global/BAM segment is eliminated against the offsetting
intercompany interest income included within Other Operations.
(2) MSC collected are recorded directly to BAM’s equity, which is recorded as non-controllingnoncontrolling interest on White Mountains’s balance sheet.

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 December 31, 2020
MillionsHG GlobalBAMEliminationsTotal
Direct written premiums$— $61.5 $— $61.5 
Assumed written premiums53.0 .2 (53.0).2 
Gross written premiums53.0 61.7 (53.0)61.7 
Ceded written premiums— (53.0)53.0 — 
Net written premiums$53.0 $8.7 $— $61.7 
Earned insurance and reinsurance premiums$18.7 $4.1 $— $22.8 
Net investment income (loss)7.8 11.7 — 19.5 
Net investment income (loss) - BAM Surplus Notes18.8 — (18.8)— 
Net realized and unrealized investment gains (losses)11.8 11.9 — 23.7 
Other revenues.3 2.2 — 2.5 
Total revenues57.4 29.9 (18.8)68.5 
Insurance and reinsurance acquisition expenses4.7 2.3 — 7.0 
General and administrative expenses2.6 54.2 — 56.8 
Interest expense - BAM Surplus Notes— 18.8 (18.8)— 
Total expenses7.3 75.3 (18.8)63.8 
Pre-tax income (loss)$50.1 $(45.4)$— $4.7 
Supplemental information:
MSC collected (1)
$— $68.9 $— $68.9 

 December 31, 2022
MillionsHG GlobalBAMEliminationsTotal
Direct written premiums$— $63.8 $— $63.8 
Assumed written premiums55.9 1.3 (55.9)1.3 
Gross written premiums55.9 65.1 (55.9)65.1 
Ceded written premiums— (55.9)55.9 — 
Net written premiums$55.9 $9.2 $— $65.1 
Earned insurance and reinsurance premiums$27.5 $5.8 $— $33.3 
Net investment income (loss)10.3 11.2 — 21.5 
Net investment income (loss) - BAM Surplus Notes11.7 — (11.7)— 
Net realized and unrealized investment gains (losses)(52.5)(53.3)— (105.8)
Other revenues.5 4.1 — 4.6 
Total revenues(2.5)(32.2)(11.7)(46.4)
Insurance and reinsurance acquisition expenses9.3 1.9 — 11.2 
General and administrative expenses2.8 66.3 — 69.1 
Interest expense8.3 — — 8.3 
Interest expense - BAM Surplus Notes— 11.7 (11.7)— 
Total expenses20.4 79.9 (11.7)88.6 
Pre-tax income (loss)$(22.9)$(112.1)$— $(135.0)
Supplemental information:
MSC collected (1)
$— $81.4 $— $81.4 
(1) MSC collected are recorded directly to BAM’s equity, which is recorded as non-controllingnoncontrolling interest on White Mountains’s balance sheet.

December 31, 2019 December 31, 2021
MillionsMillionsHG GlobalBAMEliminationsTotalMillionsHG GlobalBAMEliminationsTotal
Direct written premiumsDirect written premiums$— $28.1 (2)$— $28.1 
Assumed written premiumsAssumed written premiums33.6 10.6 (33.6)10.6 
Gross written premiumsGross written premiums33.6 38.7 (33.6)38.7 
Ceded written premiumsCeded written premiums— (33.6)(2)33.6 — 
Net written premiumsNet written premiums$33.6 $5.1 $— $38.7 
Earned insurance and reinsurance premiumsEarned insurance and reinsurance premiums$13.1 $3.2 $— $16.3 
Earned insurance and reinsurance premiums
Earned insurance and reinsurance premiums
Net investment income (loss)Net investment income (loss)7.5 14.1 — 21.6 
Net investment income (loss) - BAM Surplus NotesNet investment income (loss) - BAM Surplus Notes27.4 — (27.4)— 
Net realized and unrealized investment losses11.0 16.1 — 27.1 
Net realized and unrealized investment gains (losses)
Other revenuesOther revenues— 1.6 — 1.6 
Total revenuesTotal revenues59.0 35.0 (27.4)66.6 
Insurance and reinsurance acquisition expensesInsurance and reinsurance acquisition expenses3.3 2.4 — 5.7 
General and administrative expensesGeneral and administrative expenses1.6 49.3 — 50.9 
General and administrative expenses
General and administrative expenses
Interest expense - BAM Surplus Notes
Interest expense - BAM Surplus Notes
Interest expense - BAM Surplus NotesInterest expense - BAM Surplus Notes— 27.4 (27.4)— 
Total expensesTotal expenses4.9 79.1 (27.4)56.6 
Pre-tax income (loss)Pre-tax income (loss)$54.1 $(44.1)$— $10.0 
Supplemental information:Supplemental information:
MSC collected (1) (2)
$— $68.0 $— $68.0 
MSC collected (1)
MSC collected (1)
MSC collected (1)
(1) MSC collected are recorded directly to BAM’s equity, which is recorded as non-controllingnoncontrolling interest on White Mountains’s balance sheet.
(2) During 2019, BAM issued policy endorsements for certain policies issued in periods prior to the second quarter of 2018. The impact of the policy endorsements for the year ended December 31, 2019 was a decrease to BAM’s gross written premiums of $13.4 and an increase to MSC collected of $13.4.

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HG Global/BAM Results—Year Ended December 31, 20212023 versus Year Ended December 31, 20202022
BAM is required to prepare its financial statements on a statutory accounting basis for the NYDFS and does not report stand-alone GAAP financial results. BAM is owned by its members, the municipalities that purchase BAM’s insurance for their debt issuances. BAM charges an insurance premium on each municipal bond insurance policy it writes. A portion of the premium is MSC and the remainder is a risk premium. In the event of a municipal bond refunding, a portion of the MSC from original issuance can be reutilized, in effect serving as a credit against the total insurance premium on the refunding of the municipal bond.
Gross written premiums and MSC collected in the HG Global/BAM segment totaled $118$131 million and $131$147 million in 20212023 and 2020.2022. BAM insured $17.5$15.6 billion of municipal bonds, $15.6$13.0 billion of which were in the primary market, in 20212023 compared to $17.3$16.0 billion of municipal bonds, $15.3$12.2 billion of which were in the primary market, in 2020.2022. During 2021,2022, BAM completed an assumed reinsurance transaction to insure municipal bonds with a par value of $806$43 million. During 2020, BAM completed an assumed reinsurance transaction to insure municipal bonds with a par value of $37 million. Demand2023, demand remained strong for insured bonds in the primary market, as insured penetration in the primary market was 8.1% in 20218.8% compared to 7.6%8.0% in 2020.2022. The decrease in gross written premiums and MSC collected in 2023 compared to 2022 was driven by (i) a decrease in secondary market activity, down from record levels in 2022 amidst interest rate volatility, as well as (ii) lower pricing in the primary market.
Total pricing, which reflects both gross written premiums and MSC, from new business, decreased to 6784 basis points in 20212023 compared to 7691 basis points in 2020. See “NON-GAAP FINANCIAL MEASURES” on page 71.2022. The decrease in total pricing was driven primarily by lower pricing in the primary market and a decrease in pricing and the amount ofsecondary market par insured, which was partially offset by higher pricing in the secondary market during 2021, partially offset by the assumed reinsurance transaction in the first quarter of 2021. Additionally, during 2021 BAM wrote more higher credit quality business, which can pressure absolute pricing but, at the same time, improve risk-adjusted pricing.2023 compared to 2022. Pricing in the primary market decreased to 5763 basis points in 20212023 compared to 5969 basis points in 2020,2022, driven primarily by a decrease in credit spreads.spreads for municipal bonds. Pricing in the secondary and assumed reinsurance markets, which is more transaction-specific than pricing in the primary market, decreasedincreased to 155189 basis points in 20212023 compared to 197163 basis points in 2020.2022.
The following table presents the gross par value of primary and secondary market policies issued, the gross par value of assumed reinsurance, the gross written premiums and MSC collected and total pricing for the years ended December 31, 20212023 and 2020:2022:
Year Ended December 31,
$ in Millions20212020
Gross par value of primary market policies issued$15,560.8 $15,279.6 
Gross par value of secondary market policies issued1,118.9 2,022.9 
Gross par value of assumed reinsurance805.5 36.9 
Total gross par value of market policies issued$17,485.2 $17,339.4 
Gross written premiums$55.6 $61.7 
MSC collected62.2 68.9 
Total gross written premiums and MSC collected$117.8 $130.6 
Present value of future installment MSC collections .3 
Gross written premium adjustments on existing installment policies.2 .4 
Gross written premiums and MSC from new business (1)
$118.0 $131.3 
Total pricing67 bps76 bps
(1) See “NON-GAAP FINANCIAL MEASURES” on page 71.
Year Ended December 31,
$ in Millions20232022
Gross par value of primary market policies issued$12,964.6 $12,169.7 
Gross par value of secondary market policies issued2,659.4 3,824.2 
Gross par value of assumed reinsurance 42.5 
Total gross par value of market policies issued$15,624.0 $16,036.4 
Gross written premiums$58.6 $65.1 
MSC collected72.8 81.4 
Total gross written premiums and MSC collected$131.4 $146.5 
Total pricing84 bps91 bps

HG Global reported pre-tax income (loss) of $21$56 million in 20212023 compared to $50$(23) million in 2020.2022. The decreasechange in pre-tax income (loss) was driven primarily by lowernet realized and unrealized investment returns ongains (losses) in the HG Global investmentfixed income portfolio and a decrease in 2023 compared to 2022 driven by the movement of interest income on the BAM Surplus Notes.rates. HG Global’s results in 20212023 included $12$26 million of interest income on the BAM Surplus Notes compared to $19$12 million in 2020.2022, as the interest rate increased to 7.7% in 2023 from 3.2% in 2022. HG Global’s results in 2023 also included a $17 million net deferred tax benefit related to the Bermuda economic transition adjustment.
BAM is a mutual insurance company that is owned by its members. BAM’s results are consolidated into White Mountains’s GAAP financial statements and attributed to non-controllingnoncontrolling interests. White Mountains reported pre-tax loss from BAM of $58 million in 2023 compared to $112 million in 2022. The decrease in pre-tax loss was driven primarily by net realized and unrealized investment gains (losses) in the BAM fixed income portfolio in 2023 compared to 2022 driven by the movement of interest rates. BAM’s results included $26 million of interest expense on the BAM Surplus Notes and $66 million of general and administrative expenses in 2023 compared to $12 million of interest expense on the BAM Surplus Notes and $66 million of general and administrative expenses in 2022.

49


In December 2023, BAM made a $27 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $18 million was a repayment of principal held in the Supplemental Trust, $2 million was a payment of accrued interest held in the Supplemental Trust and $7 million was a payment of accrued interest held outside the Supplemental Trust.
In December 2022, BAM made a $36 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $25 million was a repayment of principal held in the Supplemental Trust, $1 million was a payment of accrued interest held in the Supplemental Trust and $10 million was a payment of accrued interest held outside the Supplemental Trust.
As of December 31, 2023, White Mountains’s debt service model indicated that the BAM Surplus Notes would be fully repaid approximately five years prior to final maturity, which is generally consistent with the results of the update of the debt service model as of December 31, 2022.

HG Global/BAM Results—Year Ended December 31, 2022 versus Year Ended December 31, 2021
Gross written premiums and MSC collected in the HG Global/BAM segment totaled $147 million and $118 million in 2022 and 2021. BAM insured $16.0 billion of municipal bonds, $12.2 billion of which were in the primary market, in 2022 compared to $17.5 billion of municipal bonds, $15.6 billion of which were in the primary market, in 2021. During 2022, BAM completed an assumed reinsurance transaction to insure municipal bonds with a par value of $43 million. During 2021, BAM completed an assumed reinsurance transaction to insure municipal bonds with a par value of $806 million. Demand remained strong for insured bonds in the primary market, as insured penetration in the primary market was 8.0% in 2022 compared to 8.1% in 2021. Increased secondary market activity and higher pricing in the primary market, driven in part by the volatility in interest rates experienced in 2022, contributed to the increase in gross written premiums and MSC collected in 2022 compared to 2021.
Total pricing increased to 91 basis points in 2022 compared to 67 basis points in 2021. The increase in total pricing was
driven primarily by increased secondary market activity and higher pricing in the primary market in 2022 compared to 2021.
Pricing in the primary market increased to 69 basis points in 2022 compared to 57 basis points in 2021, driven primarily by an
increase in transactions insured in specific credit sectors with higher pricing. Pricing in the secondary and assumed reinsurance
markets, which is more transaction-specific than pricing in the primary market, increased to 163 basis points in 2022 compared
to 155 basis points in 2021.
The following table presents the gross par value of primary and secondary market policies issued, the gross par value of assumed reinsurance, the gross written premiums and MSC collected and total pricing for the years ended December 31, 2022 and 2021:
Year Ended December 31,
$ in Millions20222021
Gross par value of primary market policies issued$12,169.7 $15,560.8 
Gross par value of secondary market policies issued3,824.2 1,118.9 
Gross par value of assumed reinsurance42.5 805.5 
Total gross par value of market policies issued$16,036.4 $17,485.2 
Gross written premiums$65.1 $55.6 
MSC collected81.4 62.2 
Total gross written premiums and MSC collected$146.5 $117.8 
Total pricing91 bps67 bps

HG Global reported pre-tax income (loss) of $(23) million in 2022 compared to $21 million in 2021. The change in pre-tax income (loss) was driven primarily by higher net realized and unrealized investment losses on the HG Global fixed income portfolio in 2022 compared to 2021, as interest rates increased significantly. HG Global’s results in 2022 and 2021 both included $12 million of interest income on the BAM Surplus Notes.

50


On April 29, 2022, HG Global received the proceeds of a $150 million, 10-year term loan credit facility. In turn, on May 2, 2022, HG Global paid a $120 million cash dividend to shareholders, of which $116 million was paid to White Mountains.
BAM is a mutual insurance company that is owned by its members. BAM’s results are consolidated into White Mountains’s GAAP financial statements and attributed to noncontrolling interests. White Mountains reported pre-tax loss from BAM of $112 million in 2022 compared to $63 million in 2021 compared to $45 million in 2020.2021. The increase in the pre-tax loss was driven primarily by lowerhigher net unrealized investment returnslosses on the BAM investmentfixed income portfolio partially offset by a decrease in 2022 compared to 2021, as interest rates
increased significantly. BAM’s results included $12 million of interest expense on the BAM surplus notes. BAM’s results includedSurplus Notes and $66 million of general and administrative expenses in 2022 compared to $12 million of interest expense on the BAM Surplus Notes and $55 million of general and administrative expenses in 2021 compared to $192021. The increase in general and administrative expenses was driven primarily by higher incentive compensation costs.
In December 2022, BAM made a $36 million cash payment of principal and interest expense on the BAM Surplus Notes held by HG Global. Of this payment, $25 million was a repayment of principal held in the Supplemental Trust, $1 million was a payment of accrued interest held in the Supplemental Trust and $54$10 million was a payment of general and administrative expenses in 2020.
46


accrued interest held outside the Supplemental Trust.
In December 2021, BAM made a $34 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $24 million was a repayment of principal held in the Supplemental Trust and $10 million was a payment of accrued interest held outside the Supplemental Trust.
In December 2020, BAM made a $30 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $22 million was a repayment of principal held in the Supplemental Trust and $8 million was a payment of accrued interest held outside the Supplemental Trust.
In January 2020, BAM made a one-time $65 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $48 million was a repayment of principal held in the Supplemental Trust, $1 million was a payment of accrued interest held in the Supplemental Trust and $16 million was a payment of accrued interest held outside the Supplemental Trust.
As of December 31, 2021, White Mountains’s debt service model indicated that the BAM Surplus Notes would be fully repaid between six and seven years prior to final maturity, which is generally consistent with the results of the update of the debt service model as of December 31, 2020.
Through the COVID-19 pandemic, BAM’s portfolio has performed well. All BAM-insured bond payments due
through February 15, 2022 have been made by insureds, and there are no credits on BAM’s watchlist.

HG Global/BAM Results—Year Ended December 31, 2020 versus Year Ended December 31, 2019
Gross written premiums and MSC collected in the HG Global/BAM segment totaled $131 million and $107 million in 2020 and 2019. BAM insured $17.3 billion of municipal bonds, $15.3 billion of which were in the primary market, in 2020 compared to $12.8 billion of municipal bonds, $10.4 billion of which were in the primary market, in 2019. During 2020, BAM completed assumed reinsurance transactions to insure municipal bonds with a par value of $37 million. During 2019, BAM completed assumed reinsurance transactions to insure municipal bonds with a par value of $1.1 billion. Demand increased for insured bonds in the primary market as a result of the COVID-19 pandemic, as insured penetration in the primary market was 7.6% in 2020 compared to 5.9% in 2019.
Total pricing, which reflects both gross written premiums and MSC from new business, decreased to 76 basis points in 2020 compared to 83 basis points in 2019. See “NON-GAAP FINANCIAL MEASURES” on page 71. The mix of business impacted 2020 total pricing as BAM wrote proportionally more lower-priced primary business and less higher-priced secondary market and assumed reinsurance business. Additionally, during 2020 BAM wrote more higher credit quality business, which can pressure absolute pricing but, at the same time, improve risk-adjusted pricing. Pricing in the primary market increased to 59 basis points in 2020 compared to 51 basis points in 2019, driven primarily by increased demand for insurance and wider credit spreads as a result of the COVID-19 pandemic. Pricing in the secondary and assumed reinsurance markets, which is more transaction-specific than pricing in the primary market, decreased to 197 basis points in 2020 compared to 219 basis points in 2019.
The following table presents the gross par value of primary and secondary market policies issued, the gross par value of assumed reinsurance, the gross written premiums and MSC collected and total pricing for the years ended December 31, 2020 and 2019:
Year Ended December 31,
$ in Millions20202019
Gross par value of primary market policies issued$15,279.6 $10,405.1 
Gross par value of secondary market policies issued2,022.9 1,311.8 
Gross par value of assumed reinsurance36.9 1,130.7 
Total gross par value of market policies issued$17,339.4 $12,847.6 
Gross written premiums$61.7 (2)$38.7 
MSC collected68.9 (2)68.0 
Total gross written premiums and MSC collected$130.6 $106.7 
Present value of future installment MSC collections.3 .3 
Gross written premium adjustments on existing installment policies.4 (.1)
Gross written premiums and MSC from new business (1)
$131.3 $106.9 
Total pricing76 bps83 bps
(1)See “NON-GAAP FINANCIAL MEASURES” on page 71.
(2) During 2019, BAM issued policy endorsements for certain policies issued in periods prior to the second quarter of 2018. The impact of the policy endorsements for the year ended December 31, 2019 was a decrease to BAM’s gross written premiums of $13.4 and an increase to MSC collected of $13.4.

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HG Global reported pre-tax income of $50 million in 2020 compared to $54 million in 2019. The decrease in pretax income was driven primarily by a decrease in interest income on the BAM Surplus Notes partially offset by an increase in income from insurance operations. HG Global’s results in 2020 included $19 million of interest income on the BAM Surplus Notes compared to $27 million in 2019.
White Mountains reported pre-tax loss from BAM of $45 million in 2020 compared to $44 million in 2019. The increase in the pre-tax loss was driven primarily by lower investment returns on the BAM investment portfolio and higher general and administrative expenses partially offset by a decrease in interest expense on BAM surplus notes. BAM’s results included $19 million of interest expense on the BAM Surplus Notes and $54 million of general and administrative expenses in 2020 compared to $27 million of interest expense on the BAM Surplus Notes and $49 million of general and administrative expenses in 2019.
In December 2020, BAM made a $30 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $22 million was a repayment of principal held in the Supplemental Trust and $8 million was a payment of accrued interest held outside the Supplemental Trust.
In January 2020, HG Global and BAM agreed to amend the BAM Surplus Notes to extend the end of the variable interest rate period from 2021 to 2024, to extend the initial 10-year term of the FLRT to the end of 2022 and to enter into the XOLT. See “HG Global/BAM - Reinsurance Treaties” on page F-58. In connection with these actions, and reflecting changes in Standard & Poor’s insurance rating methodology, in January 2020, BAM made a one-time $65 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $48 million was a repayment of principal held in the Supplemental Trust, $1 million was a payment of accrued interest held in the Supplemental Trust and $16 million was a payment of accrued interest held outside the Supplemental Trust.
In December 2019, BAM made a $32 million cash payment (which included a one-time $10 million cash payment) of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $24 million was a repayment of principal held in the Supplemental Trust and $8 million was a payment of accrued interest held outside the Supplemental Trust.
As of December 31, 2020, White Mountains’s debt service model indicated that the BAM Surplus Notes would be fully repaid between six and seven years prior to final maturity, which is generally consistent with the results of the update of the debt service model as of December 31, 2019.

Claims Paying Resources
BAM’s claims paying resources represent the capital and other financial resources that BAM has available to pay claims and, as such, is a key indication of BAM’s financial strength.
BAM’s claims paying resources were $1,501 million as of December 31, 2023 compared to $1,423 million as of December 31, 2022 and $1,192 million as of December 31, 2021 compared to $987 million as of December 31, 2020 and $938 million as of December 31, 2019.2021. The increase in claims paying resources was driven primarily by the Fidus Re 20212022 Agreement and increases in the statutory value of the collateral trusts resulting from positive cash flow from operations, partially offset by the portion of cash payments on the BAM surplus notes related to accrued interest held outside the Supplemental Trust.
The following table presents BAM’s total claims paying resources on a statutory basis as of December 31, 2021, 20202023, 2022 and 2019:2021:
MillionsMillionsDecember 31, 2021December 31, 2020December 31, 2019MillionsDecember 31, 2023December 31, 2022December 31, 2021
Policyholders’ surplusPolicyholders’ surplus$298.1 324.7 $402.4 
Contingency reserveContingency reserve101.8 86.4 68.2 
Qualified statutory capital Qualified statutory capital399.9 411.1 470.6 
Net unearned premiums49.5 45.2 39.3 
Statutory net unearned premiums
Present value of future installment premiums and MSCPresent value of future installment premiums and MSC13.8 14.0 13.7 
HG Re Collateral Trusts at statutory valueHG Re Collateral Trusts at statutory value478.9 417.0 314.0 
Fidus Re collateral trust at statutory value250.0 100.0 100.0 
Fidus Re collateral trusts at statutory value
Claims paying resources Claims paying resources$1,192.1 987.3 $937.6 

4851


HG Global/BAM Balance Sheets
The following table presentstables present amounts from HG Global, which includes HG Re and its other wholly-owned subsidiaries, and BAM that are contained within White Mountains’s consolidated balance sheet as of December 31, 20212023 and 2020:2022:
December 31, 2021
December 31, 2023December 31, 2023
MillionsMillionsHG GlobalBAMEliminations and Segment AdjustmentTotal SegmentMillionsHG GlobalBAMEliminations and Segment AdjustmentTotal Segment
AssetsAssets
Fixed maturity investments$461.7 $472.4 $— $934.1 
Short-term investments17.8 14.6 — 32.4 
Fixed maturity investments, at fair value
Fixed maturity investments, at fair value
Fixed maturity investments, at fair value
Short-term investments, at fair value
Total investmentsTotal investments479.5 487.0 — 966.5 
CashCash13.4 6.4 — 19.8 
BAM Surplus NotesBAM Surplus Notes364.6 — (364.6) 
Accrued interest receivable on BAM Surplus NotesAccrued interest receivable on BAM Surplus Notes157.6 — (157.6) 
Insurance premiums receivableInsurance premiums receivable4.3 6.9 (4.3)6.9 
Deferred acquisition costsDeferred acquisition costs62.7 33.1 (62.7)33.1 
Other assetsOther assets2.1 16.6 (.2)18.5 
Other assets
Other assets
Total assetsTotal assets$1,084.2 $550.0 $(589.4)$1,044.8 
LiabilitiesLiabilities
BAM Surplus Notes (1)
BAM Surplus Notes (1)
$— $364.6 $(364.6)$ 
BAM Surplus Notes (1)
BAM Surplus Notes (1)
Accrued interest payable on BAM Surplus Notes (2)
Accrued interest payable on BAM Surplus Notes (2)
— 157.6 (157.6) 
Preferred dividends payable to White Mountains's subsidiaries (3)
400.5 — — 400.5 
Preferred dividends payable to non-controlling interests14.2 — — 14.2 
Preferred dividends payable to White Mountains (3)
Preferred dividends payable to noncontrolling interests
Unearned insurance premiumsUnearned insurance premiums221.5 44.8 — 266.3 
Debt
Intercompany debt (4)
Accrued incentive compensationAccrued incentive compensation1.1 23.6 — 24.7 
Other liabilities
Other liabilities
Other liabilitiesOther liabilities.5 83.4 (67.2)16.7 
Total liabilitiesTotal liabilities637.8 674.0 (589.4)722.4 
EquityEquity
White Mountains’s common shareholders’ equity (3)
White Mountains’s common shareholders’ equity (3)
437.5 — — 437.5 
Non-controlling interests8.9 (124.0)— (115.1)
White Mountains’s common shareholders’ equity (3)
White Mountains’s common shareholders’ equity (3)
Noncontrolling interests
Total equityTotal equity446.4 (124.0)— 322.4 
Total liabilities and equityTotal liabilities and equity$1,084.2 $550.0 $(589.4)$1,044.8 
(1)    Under GAAP, the BAM Surplus Notes are classified as debt by the issuer. Under U.S. Statutory accounting, they are classified as policyholders’ surplus.
(2)    Under GAAP, interest accrues daily on the BAM Surplus Notes. Under U.S. Statutory accounting, interest is not accrued on the BAM Surplus Notes until it has been approved for payment by insurance regulators.
(3)    HG Global preferred dividends payable to White Mountains’s subsidiaries isMountains are eliminated in White Mountains’s consolidated financial statements. For segment reporting, the HG GlobalGlobal’s preferred dividends payable to White Mountains’s subsidiariesMountains included within the HG Global/BAM segment are eliminated against the offsetting receivable included within the Other Operations segment, and therefore are added back toOperations.
(4)    HG Global’s intercompany debt is eliminated in White Mountains’s common shareholders’ equityconsolidated financial statements. For segment reporting, HG Global’s intercompany debt included within the HG Global/BAM segment.segment is eliminated against the offsetting receivable included within Other Operations.
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December 31, 2020
December 31, 2022December 31, 2022
MillionsMillionsHG GlobalBAMEliminations and Segment AdjustmentTotal SegmentMillionsHG GlobalBAMEliminations and Segment AdjustmentTotal Segment
AssetsAssets
Fixed maturity investments$415.9 $443.6 $— $859.5 
Short-term investments16.5 43.9 — 60.4 
Fixed maturity investments, at fair value
Fixed maturity investments, at fair value
Fixed maturity investments, at fair value
Short-term investments, at fair value
Total investmentsTotal investments432.4 487.5 — 919.9 
CashCash23.8 19.0 — 42.8 
BAM Surplus NotesBAM Surplus Notes388.2 — (388.2)— 
Accrued interest receivable on BAM Surplus NotesAccrued interest receivable on BAM Surplus Notes155.7 — (155.7)— 
Insurance premiums receivableInsurance premiums receivable4.4 6.9 (4.4)6.9 
Deferred acquisition costsDeferred acquisition costs54.1 27.8 (54.1)27.8 
Other assetsOther assets2.0 18.8 (.4)20.4 
Other assets
Other assets
Total assetsTotal assets$1,060.6 $560.0 $(602.8)$1,017.8 
LiabilitiesLiabilities
BAM Surplus Notes (1)
BAM Surplus Notes (1)
$— $388.2 $(388.2)$— 
BAM Surplus Notes (1)
BAM Surplus Notes (1)
Accrued interest payable on BAM Surplus Notes (2)
Accrued interest payable on BAM Surplus Notes (2)
— 155.7 (155.7)— 
Preferred dividends payable to White Mountains's subsidiaries (3)
363.9 — — 363.9 
Preferred dividends payable to non-controlling interests12.7 — — 12.7 
Preferred dividends payable to White Mountains (3)
Preferred dividends payable to noncontrolling interests
Unearned insurance premiumsUnearned insurance premiums196.1 41.4 — 237.5 
Debt
Intercompany debt (4)
Accrued incentive compensationAccrued incentive compensation1.2 24.5 — 25.7 
Other liabilities
Other liabilities
Other liabilitiesOther liabilities1.0 73.5 (58.9)15.6 
Total liabilitiesTotal liabilities574.9 683.3 (602.8)655.4 
EquityEquity
White Mountains’s common shareholders’ equity (3)
White Mountains’s common shareholders’ equity (3)
472.2 — — 472.2 
Non-controlling interests13.5 (123.3)— (109.8)
White Mountains’s common shareholders’ equity (3)
White Mountains’s common shareholders’ equity (3)
Noncontrolling interests
Total equityTotal equity485.7 (123.3)— 362.4 
Total liabilities and equityTotal liabilities and equity$1,060.6 $560.0 $(602.8)$1,017.8 
(1)    Under GAAP, the BAM Surplus Notes are classified as debt by the issuer. Under U.S. Statutory accounting, they are classified as policyholders’ surplus.
(2)    Under GAAP, interest accrues daily on the BAM Surplus Notes. Under U.S. Statutory accounting, interest is not accrued on the BAM Surplus Notes until it has been approved for payment by insurance regulators.
(3)    HG Global preferred dividends payable to White Mountains’s subsidiaries isMountains are eliminated in White Mountains’s consolidated financial statements. For segment reporting, the HG GlobalGlobal’s preferred dividends payable to White Mountains’s subsidiariesMountains included within the HG Global/BAM segment are eliminated against the offsetting receivable included within the Other Operations segment, and therefore are added back toOperations.
(4)    HG Global’s intercompany debt is eliminated in White Mountains’s common shareholders’ equityconsolidated financial statements. For segment reporting, HG Global’s intercompany debt included within the HG Global/BAM segment.segment is eliminated against the offsetting receivable included within Other Operations.

5053


ArkArk/WM Outrigger

On January 1, 2021, White Mountains completed the Ark Transaction. See Note 2 — “Significant Transactions”. Ark is a specialty property and casualty insurance and reinsurance company that offers a wide range of niche insurance and reinsurance products, including property, specialty, marine & energy, specialty,casualty and accident & health and casualty.health. Ark underwrites select coverages through its two major subsidiaries in the United Kingdom and Bermuda.
InDuring the thirdfourth quarter of 2021,2022, Ark issued $163 millionsponsored the formation of floating rate unsecured subordinated notes (the “Ark 2021 Subordinated Notes”) in three separate transactions.See Note 7 — “Debt”. In connection with the issuance of the Ark 2021 Subordinated Notes, White MountainsOutrigger Re Ltd., a Bermuda company registered as a special purpose insurer and Ark terminated White Mountains’s commitmentsegregated accounts company, to provide upreinsurance capacity to $200 million of additional equity capital to Ark.
The following tabletables presents the components of pre-tax income (loss) included in White Mountains’s Arkthe Ark/WM Outrigger segment for the year-endedyears ended December 31, 2023, 2022 and 2021:
Year End December 31,
Year End December 31,
Year End December 31,
2023202320222021
MillionsMillionsYear Ended December 31, 2021MillionsArkWM
Outrigger Re
EliminationsTotalArk
Earned insurance and reinsurance premiums$637.3
Direct written premiums
Assumed written premiums
Gross written premiums
Ceded written premiums
Net written premiums
Earned insurance premiums
Earned insurance premiums
Earned insurance premiums$1,305.4 $104.3 $ $1,409.7 $1,043.4$637.3
Net investment incomeNet investment income2.9Net investment income50.4 11.0 11.0   61.4 61.4 16.316.32.9
Net realized and unrealized investment gains (losses)Net realized and unrealized investment gains (losses)16.5Net realized and unrealized
investment gains (losses)
85.9     85.9 85.9 (55.2)(55.2)16.5
Other revenuesOther revenues11.8Other revenues.8     .8 .8 5.05.011.8
Total revenuesTotal revenues668.5Total revenues1,442.5 115.3 115.3   1,557.8 1,557.8 1,009.51,009.5668.5
Losses and LAELosses and LAE314.8Losses and LAE711.2 15.6 15.6   726.8 726.8 536.4536.4314.8
Insurance and reinsurance acquisition expenses178.0
Acquisition expensesAcquisition expenses251.0 30.5  281.5 239.4178.0
General and administrative expenses - other underwritingGeneral and administrative expenses - other underwriting64.6General and administrative
expenses - other underwriting
113.6     113.6 113.6 78.778.764.6
General and administrative expenses - all otherGeneral and administrative expenses - all other50.9General and administrative
expenses - all other
48.1 .3 .3   48.4 48.4 27.527.545.4
Change in fair value of
contingent consideration
Change in fair value of
contingent consideration
48.7   48.7 17.35.5
Interest expenseInterest expense7.3Interest expense21.3     21.3 21.3 15.115.17.3
Total expensesTotal expenses615.6Total expenses1,193.9 46.4 46.4   1,240.3 1,240.3 914.4914.4615.6
Pre-tax income (loss)Pre-tax income (loss)$52.9Pre-tax income (loss)$248.6 $$68.9 $$ $$317.5 $$95.1$52.9

For
54


Combined Ratio
The following table presents the years of account prior to the Ark Transaction, a significant proportion of the Syndicates’ underwriting capital was provided by TPC Providers using whole account reinsurance contracts with Ark’s corporate member. The TPC Providers’ participation in the SyndicatesArk/WM Outrigger segment’s insurance premiums, insurance expenses and insurance ratios for the 2020year ended December 31, 2023, 2022 and 2019 open years of account is 43%2021:
Year Ended December 31,
202320222021
$ in MillionsArkWM Outrigger ReEliminationsTotalArk
Insurance premiums:
Gross written premiums$1,898.4 $110.0 $(110.0)$1,898.4 $1,452.0 $1,058.7 
Net written premiums$1,410.9 $110.0 $ $1,520.9 $1,195.2 $859.1 
Net earned premiums$1,305.4 $104.3 $ $1,409.7 $1,043.4 $637.3 
Insurance expenses:
Loss and loss adjustment expenses$711.2 $15.6 $ $726.8 $536.4 $314.8 
Acquisition expenses251.0 30.5  281.5 239.4 178.0 
Other underwriting expenses (1)
113.6   113.6 78.7 64.6 
Total insurance expenses$1,075.8 $46.1 $ $1,121.9 $854.5 $557.4 
Insurance ratios:
Loss and loss adjustment expense54.5 %15.0 % %51.6 %51.4 %49.4 %
Acquisition expense19.2 29.2  20.0 22.9 27.9 
Other underwriting expense8.7   8.0 7.5 10.1 
   Combined Ratio82.4 %44.2 % %79.6 %81.8 %87.4 %
(1) Included within general and 58% of the total net result of the Syndicates. administrative expenses.

For the years of account subsequent to the Ark Transaction, Ark is no longer using TPC Providers to provide underwriting capital for the Syndicates. During the first quarter of 2023, an RITC agreement was executed such that the outstanding loss and LAE reserves for claims arising out of the 2020 year of account, for which the TPC Providers’ participation in the total net results of the Syndicates was 43%, were reinsured into the 2021 year of account, for which the TPC Providers’ participation in the total net results of the Syndicates was 0%. Captions within Ark’s results of operations for the years ended December 31, 2022 and 2021 are shown net of amounts relating to the TPC ProvidersProviders’ share of the Syndicates’ results, including investment results.

Ark/WM Outrigger Results—Year Ended December 31, 2023 versus Year Ended December 31, 2022
Ark/WM Outrigger segment’s combined ratio was 80% for the year ended December 31, 2023. The Ark/WM Outrigger segment reported gross written premiums of $1,898 million, net written premiums of $1,521 million and net earned premiums of $1,410 million in 2023. The Ark/WM Outrigger segment reported pre-tax income of $318 million in 2023.
Ark’s combined ratio was 82% in both 2023 and 2022. The combined ratio for 2023 included two points of catastrophe losses, which included losses from Hurricane Idalia, the Maui wildfires, Hurricane Otis and various smaller events, compared to 13 points of catastrophe losses in 2022, driven primarily by losses from the conflict in Ukraine and Hurricane Ian. The combined ratio for 2023 included two points of net unfavorable prior year loss reserve development, driven primarily by unfavorable loss reserve development in the property and accident & health reserving line of business including Hurricane Ian, Winter Storm Elliott and a power outage claim, partially offset by favorable prior year loss reserve development within the specialty and casualty–runoff reserving lines of business. This compared to six points of net favorable prior year loss reserve development in 2022, driven primarily by the property and accident & health, specialty and marine & energy reserving lines of business, predominantly from business underwritten in London.
Ark reported gross written premiums of $1,898 million, net written premiums of $1,411 million and net earned premiums of $1,305 million in 2023, compared to gross written premiums of $1,452 million, net written premiums of $1,195 million and net earned premiums of $1,043 million in 2022.

5155


Ark reported pre-tax income of $249 million in 2023 compared to $95 million in 2022. Ark’s results included net realized and unrealized investment gains (losses) of $86 million in 2023, driven primarily by net unrealized investment gains on other long-term investments, fixed maturity investments and common equity securities, compared to $(55) million in 2022, driven primarily by net unrealized investment losses on fixed income securities and the impact of foreign currency on its investment portfolio. Ark’s results in 2023 also included a $51 million net deferred tax benefit related to the Bermuda economic transition adjustment. Ark’s results in 2023 also included $49 million for the increase in the fair value of its contingent consideration compared to $17 million in 2022.
Ark has exposure to the ongoing war in Gaza, primarily through its specialty (political risk/violence), marine & energy and accident & health lines of business. At this time, Ark has had negligible claims and does not expect losses from the war to have a material impact on its results of operations or financial condition. However, losses could increase depending upon the scope and duration of the war.
WM Outrigger Re’s combined ratio was 44% in 2023. The combined ratio benefited from a lack of major catastrophe losses in 2023. Losses included $16 million for smaller events such as the Maui wildfires, Hurricane Idalia and Typhoon Doksuri. WM Outrigger Re reported gross and net written premiums of $110 million and net earned premiums of $104 million in 2023. Premium levels were supported by the strong rate environment in property reinsurance. WM Outrigger Re reported pre-tax income of $69 million in 2023.

Ark/WM Outrigger Results—Year endedEnded December 31, 2022 versus Year Ended December 31, 2021
Ark’s GAAP combined ratio was 82% in 2022 compared to 87% in 2021. The GAAP combined ratio for 2022 included 1013 points of catastrophe losses, driven primarily by losses from the conflict in Ukraine and Hurricane Ian, compared to 10 points of catastrophe losses in 2021, driven primarily by Hurricane Ida, (five points), Winter Storm Uri (three points) and European floods. Catastrophe losses for 2022 included $45 million related to the European floods (two points), partially offsetconflict in Ukraine and $44 million related to Hurricane Ian on a net basis after reinstatement premiums. The combined ratio for 2022 included six points of net favorable prior year loss reserve development, driven primarily by the property and accident & health, specialty and marine & energy reserving lines of business, predominantly from business underwritten in London. This compared to three points of net favorable prior year reserve development. The net favorable prior yearloss reserve development wasin 2021, driven primarily by positive claims experience in several lines of business, particularlythe property and accident & health.health reserving line of business.
Ark’s adjusted combined ratio, which adds back amounts cededArk reported gross written premiums of $1,452 million, net written premiums of $1,195 million and net earned premiums of $1,043 million in 2022 compared to TPC Providers, was 85%gross written premiums of $1,059 million, net written premiums of $859 million and net earned premiums of $637 million in 2021. The adjusted combined ratio included 10 points of catastrophe losses, driven primarilyPremium growth at Ark was supported by Hurricane Ida (four points), Winter Storm Uri (four points)favorable market conditions across most classes with general inflationary concerns and market capacity constraints, along with the European floods (two points), partially offset by six points of net favorable prior year reserve development. The net favorable prior year reserve development was driven byongoing conflict in Ukraine, driving positive claims experience in several lines of business, particularly property and accident & health.rate momentum.
Ark reported pre-tax income of $95 million in 2022 compared to $53 million in 2021, which reflected $252021. Ark’s pre-tax income for 2022 included $55 million of transaction expenses relatednet realized and unrealized investment losses, driven primarily by net unrealized losses on fixed income securities and the impact of foreign currency on its investment portfolio, compared to the Ark Transaction.
The following table presents$17 million of net realized and unrealized investment gains in 2021. Ark’s loss and loss adjustment expense, insurance acquisition expense, other underwriting expense and combined ratios on both a GAAP-basis and an adjusted basis, which adds back amounts ceded to TPC Providers,results in 2022 also included $17 million for the year ended December 31, 2021:
Year Ended December 31, 2021
$ in MillionsGAAP
TPC Providers’ Share (1)
Adjusted
Insurance premiums:
Gross written premiums$1,058.7 $— $1,058.7 
Net written premiums$859.1 $(6.5)$852.6 
Net earned premiums$637.3 $76.3 $713.6 
Insurance expenses:
Loss and loss adjustment expenses$314.8 $39.8 $354.6 
Insurance acquisition expenses178.0 — 178.0 
Other underwriting expenses64.6 9.2 73.8 
Total insurance expenses$557.4 $49.0 $606.4 
Ratios:
Loss and loss adjustment expense49.4 %49.7 %
Insurance acquisition expense27.9 %24.9 %
Other underwriting expense10.1 %10.3 %
Combined Ratio87.4 %84.9 %
(1) See “NON-GAAP FINANCIAL MEASURES” on page 71.increase in the fair value of its contingent consideration compared to $6 million in 2021.

Gross Written Premiums
Ark’s gross written premiums increased 31% to $1,898 million in 2023 compared to 2022, with risk adjusted rate change of 15%. The increase in gross written premiums was driven primarily by the property line of business for both insurance and reinsurance across London and Bermuda, reflecting the rate environment and additional capacity provided by Outrigger Re Ltd., as well as the specialty and marine & energy lines of business. The risk adjusted rate change on the Outrigger Re Ltd. portfolio of global property reinsurance was 33% in 2023. The following table presents Ark’s gross written premiums by line of business for the years ended December 31, 2021, 20202023, 2022 and 2019, which includes periods prior to White Mountains’s ownership of Ark. White Mountains believes this is useful in understanding the underwriting growth in the newly acquired business. Gross written premiums increased 77% to $1,059 million in 2021 compared to 2020, with risk adjusted rate change up approximately 8%. In 2021, in response to an improved underwriting environment, Ark substantially increased its gross written premiums, principally in the property, specialty and marine & energy lines of business.Ark decreased its gross written premiums in the accident & health line of business in response to a lack of adequate risk adjusted pricing in light of recent market developments, including COVID-19.2021:
Year Ended December 31,
Year Ended December 31,Year Ended December 31,
MillionsMillions202120202019Millions202320222021
PropertyProperty$438.4 $235.7 $134.4 
SpecialtySpecialty256.7 118.3 103.4 
Marine & EnergyMarine & Energy242.2 129.1 107.6 
Casualty
Accident & HealthAccident & Health67.0 90.6 86.0 
Casualty54.4 24.4 40.6 
Total Gross Written Premium Total Gross Written Premium$1,058.7 $598.1 $472.0 

52


NSM

NSM is a full-service MGA and program administrator with delegated binding authorities for specialty property and casualty insurance. The company places insurance in niche sectors such as specialty transportation, real estate, social services and pet. On behalf of its insurance carrier partners, NSM typically manages all aspects of the placement process, including product development, marketing, underwriting, policy issuance and claims. NSM earns commissions based on the volume and profitability of the insurance that it places. NSM does not take insurance risk.
The following table presents the components of GAAP net income (loss), EBITDA and adjusted EBITDA included in White Mountains’s NSM segment for the years ended December 31, 2021, 2020 and 2019:
Year Ended December 31,
Millions2021 2020 2019
Commission revenues$258.0 $232.5 $193.4 
Broker commission expense80.2 75.3 64.8 
Gross profit177.8 157.2 128.6 
Other revenues72.4 52.6 39.7 
General and administrative expenses190.1 176.9 132.2 
Change in fair value of contingent consideration1.0 (3.3)2.1 
Amortization of other intangible assets35.2 26.7 19.4 
Loss on assets held for sale28.7 — — 
Interest expense23.3 22.1 16.7 
GAAP pre-tax income (loss)(28.1)(12.6)(2.1)
Income tax (expense) benefit5.6 5.7 .6 
GAAP net income (loss)(22.5)(6.9)(1.5)
Add back:
Interest expense23.3 22.1 16.7 
Income tax expense (benefit)(5.6)(5.7)(.6)
General and administrative expenses — depreciation5.4 4.5 2.8 
Amortization of other intangible assets35.2 26.7 19.4 
EBITDA (1)
35.8 40.7 36.8 
Exclude:
Change in fair value of contingent consideration1.0 (3.3)2.1 
Non-cash equity-based compensation expense2.0 2.4 — 
Impairments of intangible assets 6.2 2.4 
Loss on assets held for sale28.7 — — 
Transaction expenses4.8 7.2 3.2 
Fair value purchase accounting adjustment for
   deferred revenue
 — .9 
Investments made in the development of
   new business lines
.8 .9 .3 
Restructuring expenses5.4 4.8 2.3 
Legal settlements(7.6)— — 
Adjusted EBITDA (1)
$70.9 $58.9 $48.0 
(1) See “NON-GAAP FINANCIAL MEASURES” on page 71.

5356


NSM Results—Year ended December 31, 2021 versus Year ended December 31, 2020
NSM reported commission and other revenues of $330 million, pre-tax loss of $28 million and adjusted EBITDA of $71 million in 2021. NSM reported commission and other revenues of $285 million, pre-tax loss of $13 million and adjusted EBITDA of $59 million in 2020. NSM’s pre-tax loss included interest expense of $23 million and amortization of other intangible assets of $35 million in 2021 compared to $22 million and $27 million, respectively, in 2020. NSM’s pre-tax loss in 2021 also includes a loss of $29 million related to the sale of its Fresh Insurance motor business. Results in the year ended December 31, 2021 include the results of J.C. Taylor from August 6, 2021, the date of its acquisition. Results in the years ended December 31, 2021 and 2020 include the results of Kingsbridge from April 7, 2020, the date of its acquisition. In addition to the acquisitions of J.C. Taylor and Kingsbridge, commission and other revenues, pre-tax loss and adjusted EBITDA benefited from growth in the pet and specialty transportation verticals, partially offset by a decline in the real estate vertical, in 2021.
Broker commission expenses and general and administrative expenses were $80 million and $190 million in 2021 compared to $75 million and $177 million, respectively, in 2020. The increase in NSM’s broker commission expenses and general and administrative expenses in 2021 compared to 2020 was driven primarily by the acquisitions of J.C. Taylor and Kingsbridge and increased technology costs and professional fees related to information systems projects.

NSM Results—Year ended December 31, 2020 versus December 31, 2019
NSM reported commission and other revenues of $285 million in 2020, pre-tax loss of $13 million and adjusted EBITDA of $59 million in 2020. NSM reported commission and other revenues of $233 million, pre-tax loss of $2 million and adjusted EBITDA of $48 million in 2019. NSM’s pre-tax loss included interest expense of $22 million and amortization of other intangible assets of $27 million in 2020 compared to $17 million and $19 million, respectively, in 2019. Results in the year ended December 31, 2020 include the results of Kingsbridge from April 7, 2020, the date of its acquisition. Results in the years ended December 31, 2020 and 2019 include the results of Embrace from April 1, 2019, the date of its acquisition.
Broker commission expenses and general and administrative expenses were $75 million and $177 million in 2020 compared to $65 million and $132 million, respectively, in 2019. The increase in NSM’s broker commission expenses and general and administrative expenses in 2020 compared to 2019 was driven primarily by the acquisitions of Kingsbridge and Embrace. In addition, NSM’s general and administrative expenses for 2020 and 2019 included a $6 million and $2 million impairment of intangible assets related to its U.K. vertical.

NSM Business Trends
NSM’s business consists of approximately 25 active programs that are broadly categorized into six market verticals. J.C. Taylor was added to the Specialty Transportation vertical in the third quarter of 2021 and Kingsbridge was added to the U.K. vertical in the second quarter of 2020.Ark/WM Outrigger Balance Sheets
The following table presents the controlled premiumtables present amounts from Ark and commission and other revenues by vertical for the years endedWM Outrigger Re that are contained within White Mountains’s consolidated balance sheet as of December 31, 2021, 20202023 and 2019:2022:
Year Ended December 31,
202120202019
Millions
Controlled Premium (1)
Commission and Other Revenue
Controlled Premium (1)
Commission and Other Revenue
Controlled Premium (1)
Commission and Other Revenue
Specialty Transportation$344.7 $97.2 $310.2 $85.5 $290.2 $77.6 
United Kingdom195.2 53.1 179.5 49.4 155.5 45.9 
Pet184.9 76.3 131.9 55.0 67.6 30.0 
Real Estate153.9 34.4 189.1 44.9 157.2 34.7 
Social Services136.7 33.9 115.5 28.9 102.7 25.9 
Other165.8 35.5 134.5 21.4 124.5 19.0 
Total$1,181.2 $330.4 $1,060.7 $285.1 $897.7 $233.1 
(1) Controlled premium are total premiums placed by NSM during the period.

December 31, 2023
MillionsArkWM Outrigger ReEliminations and Segment AdjustmentsTotal
Assets
Fixed maturity investments, at fair value$866.8 $ $ $866.8 
Common equity securities, at fair value400.6   400.6 
Short-term investments, at fair value697.5 265.3  962.8 
Other long-term investments440.9   440.9 
Total investments2,405.8 265.3  2,671.1 
Cash90.2 .3  90.5 
Reinsurance recoverables463.3  (21.3)442.0 
Insurance premiums receivable612.2 27.7 (27.7)612.2 
Deferred acquisition costs144.3 1.0  145.3 
Goodwill and other intangible assets292.5   292.5 
Other assets125.0   125.0 
Total assets$4,133.3 $294.3 $(49.0)$4,378.6 
Liabilities
Loss and loss adjustment expense reserves$1,605.1 $15.6 $(15.6)$1,605.1 
Unearned insurance premiums743.6 5.7 (5.7)743.6 
Debt185.5   185.5 
Reinsurance payable108.8  (27.7)81.1 
Contingent consideration94.0   94.0 
Other liabilities166.8   166.8 
Total liabilities2,903.8 21.3 (49.0)2,876.1 
Equity
White Mountains’s common shareholders’ equity892.6 273.0  1,165.6 
Noncontrolling interests336.9   336.9 
Total equity1,229.5 273.0  1,502.5 
Total liabilities and equity$4,133.3 $294.3 $(49.0)$4,378.6 

5457


Year Ended
December 31, 2022
MillionsArk
WM Outrigger Re (1)
Eliminations and Segment AdjustmentsTotal
Assets
Fixed maturity investments, at fair value$772.8 $— $— $772.8 
Common equity securities, at fair value334.6 — — 334.6 
Short-term investments, at fair value280.9 203.7 — 484.6 
Other long-term investments373.6 — — 373.6 
Total investments1,761.9 203.7 — 1,965.6 
Cash100.0 1.5 — 101.5 
Reinsurance recoverables595.3 — — 595.3 
Insurance premiums receivable544.1 — — 544.1 
Deferred acquisition costs127.2 — — 127.2 
Goodwill and other intangible assets292.5 — — 292.5 
Other assets65.2 — — 65.2 
Total assets$3,486.2 $205.2 $— $3,691.4 
Liabilities
Loss and loss adjustment expense reserves$1,296.5 $— $— $1,296.5 
Unearned insurance premiums623.2 — — 623.2 
Debt183.7 — — 183.7 
Reinsurance payable251.1 — — 251.1 
Contingent consideration45.3 — — 45.3 
Other liabilities121.1 1.2 — 122.3 
Total liabilities2,520.9 1.2 — 2,522.1 
Equity
White Mountains’s common shareholders’ equity717.4 204.0 — 921.4 
Noncontrolling interests247.9 — — 247.9 
Total equity965.3 204.0 — 1,169.3 
Total liabilities and equity$3,486.2 $205.2 $— $3,691.4 
(1) Amounts as of December 31, 2021 versus Year Ended2022 for WM Outrigger Re have been reclassified from Other Operations to the Ark/WM Outrigger segment to conform to the presentation as of December 31, 2020
Specialty Transportation: NSM’s specialty transportation controlled premium and commission and other revenues increased 11% and 14% in 2021 compared to 2020, driven primarily by the impact of higher commission levels and fees in the collector car and the trucking business and the acquisition of J.C. Taylor, partially offset by lower contingent commissions.J.C. Taylor contributed $13 million of controlled premium and $4 million of commission and other revenues from the date of acquisition.
United Kingdom: NSM’s United Kingdom controlled premium and commission and other revenues increased 9% and 8% in 2021 compared to 2020, driven primarily by growth in the MGA business and the Kingsbridge acquisition. Excluding Kingsbridge, United Kingdom controlled premium increased 1% and commission and other revenues decreased 8% in 2021 compared to 2020.Excluding Kingsbridge, commission and other revenues decreased as a result of changes in product mix, as the brokerage business, which has higher commission rates than the MGA business, declined due to disruption to the travel and leisure markets resulting from a full year impact of the COVID-19 pandemic, while the MGA business grew.
Pet: NSM’s pet controlled premium and commission and other revenues increased 40% and 39% in 2021 compared to 2020, driven primarily by substantial growth in units from continuing strong demand as a result of marketing efforts.
Real Estate: NSM’s real estate controlled premium and commission and other revenues decreased 19% and 23% in 2021 compared to 2020, driven primarily by declines in both rates and units in the coastal condominium program, partially offset by growth in the excess and surplus habitational program. The declines in the coastal condominium program were driven primarily by lower insurance carrier capacity available for the program as NSM is transitioning to a new insurance carrier platform.
Social Services:NSM’s social services controlled premium and commission and other revenues increased 18% and 17% in 2021 compared to 2020, driven primarily by rate increases and unit growth.
Other:NSM’s other controlled premium and commission and other revenues increased 23% and 66% in 2021 compared to 2020. The increase in controlled premium was driven primarily by increases in the workers compensation and staffing markets resulting from the emergence from COVID-19 lockdowns.Commission and other revenues increased more than controlled premium driven primarily by an increase in profit commissions and product mix shifts into higher rate workers compensation programs.

Year Ended December 31, 2020 versus Year Ended December 31, 2019
Specialty Transportation: NSM’s specialty transportation controlled premium and commission and other revenues increased 7% and 10% in 2020 compared to 2019, driven primarily by rate increases and unit growth in the collector car and tow truck markets.
United Kingdom: NSM’s United Kingdom controlled premium and commission and other revenues increased 15% and 8% in 2020 compared to 2019, driven primarily by the acquisition of Kingsbridge. Kingsbridge contributed $26 million of controlled premium and $12 million of commission and other revenues in 2020. Excluding Kingsbridge, United Kingdom controlled premium decreased 1% in 2020 compared to 2019, as growth in the MGA business was offset by declines in the brokerage business caused by disruption to the travel and non-standard auto markets in the United Kingdom resulting from the COVID-19 pandemic. Excluding Kingsbridge, United Kingdom commission and other revenues declined 19% due to COVID-related challenges and changes in product mix, as the brokerage business, which has higher commission rates than the MGA business, declined while the MGA business grew.
Pet: NSM’s pet controlled premium and commission and other revenues increased 95% and 83% in 2020 compared to2019, driven primarily by the acquisition of Embrace in April 2019 and strong demand in 2020 as pet adoption increased substantially as a result of the COVID-19 pandemic. The increase in commission and other revenues was less than the increase in premium due to business mix, as affinity business grew faster than direct market business.
Real Estate: NSM’s real estate controlled premium and commission and other revenues increased 20% and 29% in 2020 compared to 2019, driven primarily by rate increases and strong retention rates in coverages for coastal condominium associations combined with rate increases and unit growth in the excess and surplus habitational program.
Social Services:NSM’s social services controlled premium and commission and other revenues both increased 12% in 2020compared to 2019, driven primarily by rate increases and unit growth.
Other:NSM’s other controlled premium and commission and other revenues increased 8% and 13% in 2020 comparedto 2019. The increase in controlled premium was driven primarily by rate increases. Commission and other revenues increased as the professional liability business, which has higher commission rates than retail, grew while the retail business declined.

2023.
5558


Kudu

Kudu provides capital solutions for boutique asset and wealth managers for a variety of purposes including generational ownership transfers, management buyouts, acquisition and growth finance and legacy partner liquidity. Kudu also provides strategic assistance to investees from time to time.
As of December 31, 2021,2023, Kudu hashad deployed a total of $612$884 million, in 17including transaction costs, into 25 asset and wealth management firms globally, including onethree that washave been exited. As of December 31, 2021,2023, the asset and wealth management firms have combined assets under management of approximately $66$104 billion, spanning a range of asset classes, including real estate, real assets, wealth management, hedge funds, private equity and alternative credit strategies. Kudu’s capital was deployed at an average gross cash yield at inception of 10.1%9.9%.
On March 23, 2021, Kudu replaced the Kudu Bank Facility with the Kudu Credit Facility. Subject to maximum loan to value (“LTV”) levels, the total borrowing capacity of the Kudu Credit Facility is $300 million (which includes the current advanced amount of $225 million). See Note 7 — “Debt”.
The following table presents the components of GAAP net income, EBITDA and adjusted EBITDA included in White Mountains’s Kudu segment for the years ended December 31, 20212023, 2022 and December 31, 2020 and for the period from April 4, 2019, the date of the Kudu Transaction, to December 31, 2019:2021:
Year Ended December 31, 2021Year Ended December 31, 2020April 4, 2019 to December 31, 2019
Year Ended December 31,
Year Ended December 31,
Year Ended December 31,
Millions
Millions
MillionsMillionsYear Ended December 31, 2021Year Ended December 31, 2020April 4, 2019 to December 31, 2019
Net investment incomeNet investment income
Net investment income
Net investment income
Net realized and unrealized investment gains (losses)
Net realized and unrealized investment gains (losses)
Net realized and unrealized investment gains (losses)Net realized and unrealized investment gains (losses)89.9 15.9 6.3 
Other revenuesOther revenues.2 .3 .2 
Other revenues
Other revenues
Total revenues
Total revenues
Total revenuesTotal revenues134.0 45.7 21.2 
General and administrative expensesGeneral and administrative expenses14.5 11.8 10.1 
Amortization of other intangible assets
.3 .3 .2 
General and administrative expenses
General and administrative expenses
Interest expense
Interest expense
Interest expenseInterest expense11.7 6.0 .1 
Total expensesTotal expenses26.5 18.1 10.4 
Total expenses
Total expenses
GAAP pre-tax income (loss)
GAAP pre-tax income (loss)
GAAP pre-tax income (loss)GAAP pre-tax income (loss)$107.5 $27.6 $10.8 
Income tax (expense) benefitIncome tax (expense) benefit(29.5)(7.0)(2.8)
Income tax (expense) benefit
Income tax (expense) benefit
GAAP net income (loss)
GAAP net income (loss)
GAAP net income (loss)GAAP net income (loss)78.0 20.6 8.0 
Add back:Add back:
Add back:
Add back:
Interest expense
Interest expense
Interest expenseInterest expense11.7 6.0 .1 
Income tax expense (benefit)Income tax expense (benefit)29.5 7.0 2.8 
Income tax expense (benefit)
Income tax expense (benefit)
General and administrative expenses – depreciation
General and administrative expenses – depreciation
General and administrative expenses – depreciationGeneral and administrative expenses – depreciation — — 
Amortization of other intangible assetsAmortization of other intangible assets.3 .3 .2 
Amortization of other intangible assets
Amortization of other intangible assets
EBITDA (1)
EBITDA (1)
EBITDA (1)
EBITDA (1)
119.5 33.9 11.1 
Exclude:Exclude:
Exclude:
Exclude:
Net realized and unrealized investment (gains) losses
Net realized and unrealized investment (gains) losses
Net realized and unrealized investment (gains) lossesNet realized and unrealized investment (gains) losses(89.9)(15.9)(6.3)
Non-cash equity-based compensation expenseNon-cash equity-based compensation expense1.2 .4 1.3 
Non-cash equity-based compensation expense
Non-cash equity-based compensation expense
Transaction expenses
Transaction expenses
Transaction expensesTransaction expenses2.0 3.7 2.9 
Adjusted EBITDA (1)
Adjusted EBITDA (1)
$32.8$22.1$9.0
Adjusted EBITDA (1)
Adjusted EBITDA (1)
(1) See “NON-GAAP FINANCIAL MEASURES” on page 71.73.

The following table presents the changes to the fair value of Kudu’s Participation Contracts:
December 31,
Millions20232022
Beginning balance of Kudu’s Participation Contracts$695.9 $669.5 
   Contributions to Participation Contracts199.6 (1)99.8 
   Proceeds from Participation Contracts sold(111.0)(1)(137.5)
Net realized and unrealized investment gains on Participation Contracts sold and
   pending sale (2)
14.3 53.2 
Net unrealized investment gains (losses) on Participation Contracts - all other (3)
91.7 10.9 
Ending balance of Kudu’s Participation Contracts (4)
$890.5 $695.9 

(1)
Includes $35.8 of non-cash contribution to (proceeds from) Participation Contracts.
(2) Includes realized and unrealized investment gains (losses) recognized from Participation Contracts beginning in the quarter a contract is classified as pending sale.
(3) Includes unrealized investment gains (losses) recognized from (i) ongoing Participation Contracts and (ii) Participation Contracts prior to classification as pending sale.
(4) As of December 31, 2023, Kudu’s other long-term investments also include $5.8 related to a private debt instrument.
5659


Kudu Results—Results — Year Ended December 31, 2023 versus Year Ended December 31, 2022
Kudu reported total revenues of $177 million, pre-tax income of $137 million and adjusted EBITDA of $57 million for the year ended December 31, 20212023 compared to total revenues of $119 million, pre-tax income of $89 million and adjusted EBITDA of $42 million for the year ended December 31, 2022. Total revenues and pre-tax income included $47 million of realized investment gains and $59 million of unrealized investment gains on Kudu’s Participation Contracts in 2023 compared to $67 million of realized investment gains, partially offset by $3 million of net unrealized investment losses, on Kudu’s Participation Contracts in 2022. Realized investment gains on Kudu’s Participation Contracts were driven by two sales transactions in 2023 and two sales transaction in 2022. The net unrealized investment gains on Kudu’s Participation Contracts for the year ended December 31, 2023 were driven primarily by a step-up in valuation related to a pending transaction, improved growth prospects at several managers and lower discount rates across the portfolio. Total revenues, pre-tax income, and adjusted EBITDA for the year ended 2023 also included $71 million of net investment income compared to $54 million for the year ended 2022. The increase in net investment income in 2023 compared to 2022 was driven primarily by amounts earned from $266 million in new deployments that Kudu made during 2023 and 2022 and a $12 million realization of carried interest for one of Kudu’s Participation Contracts, partially offset by the negative impact on net investment income from recent sale transactions.

Kudu Results—Year Ended December 31, 2022 versus Year ended December 31, 20202021
Kudu reported total revenues of $119 million, pre-tax income of $89 million and adjusted EBITDA of $42 million for the year ended December 31, 2022 compared to total revenues of $134 million, pre-tax income of $108 million and adjusted EBITDA of $33 million in 2021 compared to total revenues of $46 million, pre-tax income of $28 million and adjusted EBITDA of $22 million in 2020.for the year ended December 31, 2021. Total revenues and pre-tax income for 2021 included $67 million of realized investment gains, partially offset by $3 million of net unrealized investment losses, on Kudu’s Participation Contracts in 2022 compared to $22 million of realized investment gains and $68 million of net unrealized investment gains on Kudu’s Participation Contracts in 2021 compared to $16 million of unrealized gains on Kudu’s Participation Contracts in 2020. The increase in net unrealized and realized2021. Realized investment gains on Kudu’s Participation Contracts waswere driven by two sales transactions in 2022 and one sales transaction in 2021. The net unrealized investment losses on Kudu’s Participation Contracts for the year ended December 31, 2022 were driven primarily by asset growth,declines in assets under management at several managers with public equity exposure, an increase in discount rates as a result of the performancerising interest rate environment and foreign exchange losses, partially offset by an increase in the fair value of Kudu’s underlying asset management businesses and proceeds received from a sale transaction.two Participation Contracts with pending sales transactions. Total revenues, pre-tax income, and adjusted EBITDA in 2021for the year ended 2022 also included $44$54 million of net investment income compared to $30$44 million in 2020.for the year ended 2021. The increase in net investment income was driven primarily by amounts earned from the $347$310 million (including $5 million of transaction costs) in new deployments that Kudu made during 2022 and 2021. The two sales transactions in 2021 and 2020.

Kudu Results—Year ended December 31, 2020 versus Year ended December 31, 2019
Kudu reported total revenues of $46 million, pre-tax income of $28 million and adjusted EBITDA of $22 million for 2020 compared to total revenues of $21 million, pre-tax income of $11 million and adjusted EBITDA of $9 million for the period from April 4, 2019, the date of the Kudu Transaction, to December 31, 2019. Total revenues and pre-tax income included $16 million of unrealized gains on Kudu’s Participation Contracts in 2020 compared to $6 million in the period from April 4, 2019 to December 31, 2019. Total revenues, pre-tax income and adjusted EBITDA in 2020 also included $30 million of2022 negatively impacted net investment income compared to $15 million in 2019. The increases in Kudu’s total revenues, pre-tax income and adjusted EBITDA in 2020until proceeds were driven primarily by net investment income earned from the $121 million (including $3 million of transaction costs) in new deployments that Kudu made in 2020 and 2019.redeployed.

MediaAlpha

On February 26, 2019, MediaAlpha completed the 2019 MediaAlpha Transaction. White Mountains deconsolidated MediaAlpha as a result of the 2019 MediaAlpha Transaction and stopped reporting it as a segment. On October 30, 2020, MediaAlpha completed the MediaAlpha IPO. Prior to the MediaAlpha IPO, White Mountains’s non-controlling equity interest in MediaAlpha was accounted for at fair value within other long-term investments. Following the MediaAlpha IPO, White Mountains’s non-controlling equity interest in MediaAlpha is accounted for at fair value based on the publicly traded share price of MediaAlpha’s common stock. See Summary of Investment Results on page 59.
The following table presents the components of pre-tax income (loss) included in White Mountains’s MediaAlpha segment for the period of January 1, 2019 to February 26, 2019:
MillionsJanuary 1, 2019 to February 26, 2019
Advertising and commission revenues$48.8 
Cost of sales40.6 
Gross profit8.2 
Other revenue— 
General and administrative expenses5.7 
General and administrative expenses -
   the 2019 MediaAlpha Transaction related costs
6.8 
Amortization of other intangible assets1.6 
Interest expense.2 
Pre-tax income (loss)$(6.1)

MediaAlpha Results—For the Period from January 1, 2019 to February 26, 2019
MediaAlpha reported pre-tax loss of $6 million and revenues of $49 million from January 1, 2019 to February 26, 2019, the date of the 2019 MediaAlpha Transaction. During the period from January 1, 2019 to February 26, 2019, revenues were driven primarily by the P&C and Health, Medicare and Life verticals, which had revenues of $26 million and $17 million. During the period from January 1, 2019 to February 26, 2019, MediaAlpha recognized $7 million of costs related to the 2019 MediaAlpha Transaction in general and administrative expenses.

57


Other Operations

The following table presents the components of pre-tax income (loss) included in White Mountains’s financial results from its Other Operations segment for the years ended December 31, 2021, 20202023, 2022 and 2019:2021:
Year Ended December 31,
Year Ended December 31,Year Ended December 31,
MillionsMillions202120202019Millions202320222021
Net investment incomeNet investment income$18.2 $82.0 $43.4 
Net investment income
Net investment income
Net realized and unrealized investment gains (losses)Net realized and unrealized investment gains (losses)50.7 (8.8)219.8 
Net realized and unrealized investment gains (losses) from investment in MediaAlphaNet realized and unrealized investment gains (losses) from investment in MediaAlpha(380.3)686.0 180.0 
Realized gain from the 2019 MediaAlpha Transaction — 67.5 
Commission revenues
Commission revenues
Commission revenuesCommission revenues9.6 8.3 6.9 
Other revenuesOther revenues90.7 13.9 6.1 
Total revenuesTotal revenues(211.1)781.4 523.7 
Cost of salesCost of sales69.3 11.3 7.5 
Cost of sales
Cost of sales
General and administrative expensesGeneral and administrative expenses105.7 141.9 122.5 
Amortization of other intangible assets4.3 1.3 .6 
Interest expenseInterest expense1.5 1.4 .6 
Total expensesTotal expenses180.8 155.9 131.2 
Pre-tax income (loss)Pre-tax income (loss)$(391.9)$625.5 $392.5 

60


Other Operations Results—Year Ended December 31, 2023 versus Year Ended December 31, 2022
    White Mountains’s Other Operations reported pre-tax income (loss) of $113 million in 2023 compared to $(198) million in 2022. White Mountains’s Other Operations reported net realized and unrealized investment gains (losses) from its investment in MediaAlpha of $27 million in 2023 compared to $(93) million in 2022. White Mountains’s Other Operations reported net realized and unrealized investment gains (losses) of $189 million in 2023 compared to $(2) million in 2022. White Mountains’s Other Operations reported net investment income of $30 million in 2023 compared to $32 million in 2022. See “Summary of Investment Results” on page 62.
White Mountains’s Other Operations reported $81 million of other revenues in 2023 compared to $127 million in 2022. White Mountains’s Other Operations reported $40 million of cost of sales in 2023 compared to $99 million in 2022. The decreases in other revenues and cost of sales were driven primarily by a recent sale within Other Operations.
White Mountains’s Other Operations reported general and administrative expenses of $182 million in 2023 compared to $174 million in 2022. The increase in general and administrative expenses in 2023 compared to 2022 was driven primarily by two acquisitions within Other Operations in the second half of 2022, partially offset by a decrease due to the recent sale within Other Operations and lower parent company compensation and benefits. Other Operations general and administrative expenses in 2023 included $94 million of parent company compensation and benefits compared to $101 million in 2022.
White Mountains’s Other Operations includes its investment in PassportCard/DavidShield, which has operations, including its principal executive office, in Israel. White Mountains is monitoring the ongoing war in Gaza but does not expect that any effect on PassportCard/DavidShield will have a material impact on White Mountains’s results of operations or financial condition.

Share repurchases
In the year ended December 31, 2023, White Mountains repurchased and retired 24,165 of its common shares for $33 million at an average share price of $1,354.88.

Other Operations Results—Year Ended December 31, 20212022 versus Year Ended December 31, 20202021
White Mountains’s Other Operations segment reported pre-tax (loss) incomeloss of $(392)$198 million in 20212022 compared to $626$392 million in 2020.2021. White Mountains’s Other Operations segment reported net realized and unrealized investment (losses) gainslosses from its investment in MediaAlpha of $(380)$93 million in 20212022 compared to $686$380 million in 2020.2021. White Mountains’s Other Operations segment reported net realized and unrealized investment gains (losses) of $(2) million in 2022 compared to $51 million in 2021 compared to $(9) million in 2020.2021. White Mountains’s Other Operations segment reported net investment income of $32 million in 2022 compared to $18 million in 2021 compared to $82 million2021. See “Summary of Investment Results” on page 62. The increase in 2020. Netnet investment income in 2022 was driven primarily by the year ended December 31, 2020 included $55 million of net proceeds receivedincrease in the invested assets resulting from a dividend recapitalization at MediaAlpha. See “Summary of Investment Results” on page 59.the NSM Transaction.
TheWhite Mountains’s Other Operations segment reported $91$127 million of other revenues in 20212022 compared to $14$91 million in 2020. The2021. White Mountains’s Other Operations segment reported $69$99 million of cost of sales in 20212022 compared to $11$69 million in 2020.2021. The increases in other revenues and cost of sales were driven primarily by an acquisitiona business acquired within the Other Operations segment.in 2021.
TheWhite Mountains’s Other Operations segment reported general and administrative expenses of $106$174 million in 20212022 compared to $142$110 million in 2020.2021. The decreaseincrease in general and administrative expenses was driven primarily by lowerhigher incentive compensation costs drivenand advisory fees, primarily by a decrease in connection with the assumed harvest percentage on outstanding performance shares.NSM Transaction.

Share repurchases
ForIn the year ended December 31, 2021,2022, White Mountains repurchased and retired 98,511461,256 of its common shares for $108 million.

Other Operations Results—Year Ended December 31, 2020 versus Year Ended December 31, 2019
$616 million at an average price of $1,335.11. The majority of these shares were repurchased through a self-tender offer that White Mountains’s Other Operations segment reported pre-tax incomeMountains completed on September 26, 2022, through which it repurchased 327,795 of $626its common shares at a purchase price of $1,400 per share for a total cost of approximately $461 million, in 2020 compared to $393 million in 2019. White Mountains’s Other Operations segment reported net realized and unrealized investment gains from its investment in MediaAlpha of $686 million in 2020 compared to $180 million in 2019. White Mountains’s Other Operations segment reported net realized and unrealized investment (losses) gains of $(9) million in 2020 compared to $220 million in 2019. White Mountains’s Other Operations segment reported net investment income of $82 million in 2020, which was driven primarily by $55 million of net proceeds received in the third quarter of 2020 from a dividend recapitalization at MediaAlpha compared to net investment income of $43 million in 2019. See “Summary of Investment Results” on page 59. Pre-tax income for the year ended December 31, 2019 also included $68 million of realized gains from the 2019 MediaAlpha Transaction.
The Other Operations segment reported general and administrative expenses of $142 million in 2020 compared to $123 million in 2019. The increase was driven primarily by higher incentive compensation costs, driven primarily by an increase in the assumed harvest percentage on outstanding performance shares.including expenses.

5861


Share repurchases
For the year ended December 31, 2020, White Mountains repurchased and retired 99,087 of its common shares for $85 million.

II. Summary of Investment Results
 
White Mountains’s total investment results include results from all segments. For purposes of discussing rates of return, all percentages are presented gross of management fees and trading expenses and are calculated before any adjustments for TPC Providers, in order to produce a better comparison to benchmark returns.

Gross Investment Returns and Benchmark Returns

Prior to the MediaAlpha IPO, White Mountains’s investment in MediaAlpha was presented within other long-term investments. Following the MediaAlpha IPO, White Mountains presents its investment in MediaAlpha in a separate line item on the balance sheet. Amounts for periods prior to the MediaAlpha IPO have been reclassified to be comparable to the current period.
The following table presents the pre-tax investment returns for White Mountains’s consolidated portfolio for the years ended December 31, 2021, 20202023, 2022 and 2019:2021:
Year Ended December 31,
202120202019
Year Ended December 31,Year Ended December 31,
2023202320222021
Fixed income investmentsFixed income investments(0.4)%4.9 %6.1 %Fixed income investments5.8 %(4.8)%(0.4)%
Bloomberg Barclays U.S. Intermediate Aggregate IndexBloomberg Barclays U.S. Intermediate Aggregate Index(1.3)%5.6 %6.7 %Bloomberg Barclays U.S. Intermediate Aggregate Index5.2 %(9.5)%(1.3)%
Common equity securities
Common equity securities
Common equity securitiesCommon equity securities11.0 %3.6 %29.1 %13.4 %(1.0)%11.0 %
Investment in MediaAlphaInvestment in MediaAlpha(60.1)%520.3 %65.9 %Investment in MediaAlpha11.8 %(35.6)%(60.1)%
Other long-term investmentsOther long-term investments20.7 %2.5 %6.1 %Other long-term investments20.6 %10.5 %20.7 %
Total common equity securities, investment in MediaAlpha and other long-term investmentsTotal common equity securities, investment in MediaAlpha and other long-term investments(7.1)%80.0 %36.9 %Total common equity securities, investment in MediaAlpha and other long-term
investments
18.5 %2.3 %(7.1)%
Total common equity securities and other long-term investmentsTotal common equity securities and other long-term investments19.3 %4.9 %20.8 %Total common equity securities and other long-term investments19.0 %8.1 %19.3 %
S&P 500 Index (total return)S&P 500 Index (total return)28.7 %18.4 %31.5 %S&P 500 Index (total return)26.3 %(18.1)%28.7 %
Total consolidated portfolioTotal consolidated portfolio(3.4)%31.9 %20.4 %Total consolidated portfolio11.4 %(1.6)%(3.4)%
Total consolidated portfolio - excluding MediaAlphaTotal consolidated portfolio - excluding MediaAlpha6.4 %4.6 %13.0 %Total consolidated portfolio - excluding MediaAlpha11.4 %0.3 %6.4 %

Investment Returns—Year Ended December 31, 20212023 versus Year Ended December 31, 20202022
White Mountains’s total consolidated portfolio return on invested assets, both including and excluding White Mountains’s investment in MediaAlpha, was 11.4% in 2023. The total consolidated portfolio return included $27 million of net unrealized investment gains from White Mountains’s investment in MediaAlpha in 2023. Excluding MediaAlpha, investment returns in 2023 were driven primarily by net investment income and net realized and unrealized investment gains from the other long-term investments and fixed income portfolios.
White Mountains’s total consolidated portfolio return on invested assets was -1.6% in 2022, which included $93 million of net unrealized investment losses from White Mountains’s investment in MediaAlpha. Excluding MediaAlpha, the total consolidated portfolio return on invested assets was 0.3% in 2022. Excluding MediaAlpha, investment returns in 2022 were driven primarily by net investment income and net realized and unrealized gains from other long-term investments, which more than offset net unrealized investment losses in the fixed income portfolio due to rising interest rates.

Fixed Income Results
White Mountains’s pre-taxfixed income portfolio, including short-term investments, was $3.6 billion and $2.8 billion as of December 31, 2023 and 2022, which represented 56% and 55% of total invested assets. The duration of White Mountains’s fixed income portfolio, including short-term investments, was 1.9 years and 2.3 years as of December 31, 2023 and 2022. White Mountains’s fixed income portfolio includes fixed maturity and short-term investments held on deposit or as collateral. See Note 3 — “Investment Securities”.
White Mountains’s fixed income portfolio returned 5.8% in 2023 compared to -4.8% in 2022, outperforming the Bloomberg Barclays U.S. Intermediate Aggregate Index returns of 5.2% and -9.5% for the comparable periods. The results in 2023 were driven primarily by net investment income from higher yields and net unrealized investment gains as interest rates declined marginally in the period. The results in 2022 were driven primarily by net unrealized investment losses due to the impact of rising interest rates on White Mountains’s short duration portfolio, partially offset by net investment income.

62


Common Equity Securities, Investment in MediaAlpha and Other Long-Term Investments Results
White Mountains’s portfolio of common equity securities, its investment in MediaAlpha and other long-term investments was $2.8 billion and $2.3 billion as of December 31, 2023 and 2022, which represented 44% and 45% of total invested assets. See Note 3 — “Investment Securities.
White Mountains’s portfolio of common equity securities, its investment in MediaAlpha and other long-term investments returned 18.5% in 2023, which included $27 million of net unrealized investment gains from MediaAlpha. White Mountains’s portfolio of common equity securities and other long-term investments returned 19.0% in 2023. White Mountains’s portfolio of common equity securities, its investment in MediaAlpha and other long-term investments returned 2.3% in 2022, which included $93 million of net unrealized investment losses from MediaAlpha. White Mountains’s portfolio of common equity securities and other long-term investments returned 8.1% in 2022.
White Mountains’s portfolio of common equity securities consists of international listed equity funds, as well as passive ETFs that seek to provide investment results that generally correspond to the performance of the S&P 500 Index. White Mountains’s portfolio of common equity securities was $538 million and $668 million as of December 31, 2023 and 2022.
White Mountains’s portfolio of common equity securities returned 13.4% in 2023 compared to -1.0% in 2022, underperforming and outperforming the S&P 500 Index returns of 26.3% and -18.1% for the comparable periods. The results for 2023 and 2022 were driven primarily by relative underperformance and outperformance in White Mountains’s international listed equity funds, a number of which employ a market neutral strategy, versus the S&P 500 Index.
White Mountains maintains a portfolio of other long-term investments that consists primarily of unconsolidated entities, including Kudu’s Participation Contracts, private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits, ILS funds and private debt instruments. White Mountains’s portfolio of other long-term investments was $2.0 billion and $1.5 billion as of December 31, 2023 and 2022.
White Mountains’s portfolio of other long-term investments returned 20.6% in 2023 compared to 10.5% in 2022. Investment returns for 2023 were driven primarily by net investment income and net realized and unrealized investment gains from Kudu’s Participation Contracts, net realized and unrealized investment gains from private equity funds, hedge funds and unconsolidated entities, as well as unrealized gains from ILS funds. Investment returns for 2022 were driven primarily by net investment income and net realized and unrealized investment gains from Kudu’s Participation Contracts, and net investment income and net realized and unrealized investment gains from private equity funds, partially offset by unrealized losses from foreign currency.

Investment Returns—Year Ended December 31, 2022 versus Year Ended December 31, 2021
White Mountains’s total consolidated portfolio return on invested assets was -1.6% in 2022, which included $93 million of net unrealized investment losses from White Mountains’s investment in MediaAlpha. Excluding MediaAlpha, the total consolidated portfolio return on invested assets was 0.3% in 2022. Excluding MediaAlpha, investment returns in 2022 were driven primarily by net investment income and net realized and unrealized gains from other long-term investments, which more than offset net unrealized investment losses in the fixed income portfolio due to rising interest rates.
White Mountains’s total consolidated portfolio return on invested assets was -3.4% in 2021. This return2021, which included $380 million of net realized and unrealized investment losses from White Mountains’s investment in MediaAlpha. Excluding MediaAlpha, the total consolidated portfolio return on invested assets was 6.4% in 2021. Excluding MediaAlpha, investment returns in 2021 were driven primarily by favorable other long-term investments results. White Mountains’s pre-tax total consolidated portfolio return on invested assets was 31.9% in 2020. This return included $746 million of net investment income and net realized and unrealized investment gains from White Mountains’s investment in MediaAlpha. Excluding MediaAlpha, the total consolidated portfolio return on invested assets was 4.6% in 2020. Excluding MediaAlpha, investment returns in 2020 were impacted by White Mountains’s decision to liquidate its portfolio of common equity securities in the second half of 2020 in preparation for funding the Ark Transaction as equity markets rallied in the fourth quarter.other long-term investments.

Fixed Income Results
White Mountains’s fixed income portfolio, including short-term investments, was $2.4$2.8 billion and $1.4$2.4 billion as of December 31, 20212022 and 2020,2021, which represented 56%55% and 46%56% of total invested assets. The increase was driven primarily by the inclusion of Ark’s invested assets as a result of the Ark Transaction. The duration of White Mountains’s fixed income portfolio, including short-term investments, was 2.62.3 years and 3.22.6 years as of December 31, 20212022 and 2020.2021. White Mountains’s fixed income portfolio includes fixed maturity investments and short-term investments in the HG Re Collateral Trusts of $480 million and $432 millionheld on deposit or as of December 31, 2021 and 2020.collateral. See Note 3 — “Investment Securities”.
White Mountains’s fixed income portfolio returned -4.8% in 2022 compared to -0.4% in 2021, compared to 4.9% in 2020, outperforming and underperforming the Bloomberg Barclays U.S. Intermediate Aggregate Index returns of -1.3%-9.5% and 5.6%-1.3% for the comparable periods. The results in both 2022 and 2021 were driven primarily by net unrealized investment losses due to the impact of rising interest rates on White Mountains’s short duration positioning of White Mountains’s fixed income portfolio, as interest rates increased during the period, partially offset by currency losses. The results in 2020 were driven primarily by the short duration positioning of White Mountains’s fixed income portfolio as interest rates declined significantly during the period.net investment income.

5963


Common Equity Securities, Investment in MediaAlpha and Other Long-Term Investments Results
White Mountains’s portfolio of common equity securities, its investment in MediaAlpha and other long-term investments was $1.9$2.3 billion and $1.6$1.9 billion as of December 31, 20212022 and 2020,2021, which represented 44%45% and 54%44% of total invested assets. SeeSee Note 3 — “Investment Securities”Securities. The change was driven primarily by an increase in the fair value
White Mountains’s portfolio of Kudu’s Participation Contracts, the inclusion of Ark’s invested assets as a result of the Ark Transaction and the addition of international listed common equity fundssecurities, its investment in MediaAlpha and a bank loan fund at Ark, partially offset by a declineother long-term investments returned 2.3% in the fair value2022, which included $93 million of net unrealized investment losses from MediaAlpha. White Mountains’s investmentportfolio of common equity securities and other long-term investments returned 8.1% in MediaAlpha.
2022. White Mountains’s portfolio of common equity securities, its investment in MediaAlpha and other long-term investments returned -7.1% in 2021, driven primarily bywhich included $380 million of net realized and unrealized investment losses from its investment in MediaAlpha. White Mountains’s portfolio of common equity securities and other long-term investments returned 19.3% in 2021. White Mountains’s portfolio of common equity securities, its investment in MediaAlpha and other long-term investments returned 80.0% in 2020, which included $746 million of net investment income and net realized and unrealized investment gains from its investment in MediaAlpha. White Mountains’s portfolio of common equity securities and other long-term investments returned 4.9% in 2020.
During the second half of 2020, White Mountains liquidated its portfolio of common equity securities, including its portfolio of ETFs and international common equity securities, in preparation for funding the Ark Transaction. Following the Ark Transaction, White Mountains’s portfolio of common equity securities consists of international listed funds held in the Ark portfolio. As of December 31, 2021, the fair value of White Mountains’s international listed common equity funds was $251 million.
White Mountains’s portfolio of common equity securities was $668 million and $251 million as of December 31, 2022 and 2021. White Mountains’s portfolio of common equity securities returned -1.0% in 2022 compared to 11.0% in 2021, compared to 3.6% in 2020,outperforming and underperforming the S&P 500 Index returns of 28.7%-18.1% and 18.4%28.7% for the comparable periods. The results for 2022 and 2021 were driven primarily by relative underperformance in White Mountains’s non-U.S. common equity positions versus the S&P 500 Index. The results for 2020 were driven primarily by White Mountains’s lack of common equity exposure during the fourth quarter equity market rallyoutperformance and the relative underperformance from White Mountains’s international common equity portfolios versus the S&P 500 Index prior to the liquidation of these positions.
Historically, White Mountains’s portfolio of ETFs was designed to provide investment results that generally corresponded to the performance of the S&P 500 Index. White Mountains’s portfolio of ETFs was fully liquidated in the fourth quarter of 2020. In 2020, White Mountains’s portfolio of ETFs essentially earned the effective index return, before expenses, over the period in which White Mountains was invested in these funds. White Mountains also maintained relationships with a small number of third-party registered investment advisers (the “actively managed common equity portfolio”), who primarily invested in non-U.S. equity securities through unit trusts. At the end of the third quarter of 2020, White Mountains fully redeemed its actively managed common equity portfolio. White Mountains’s actively managed common equity portfolio returned -11.0% in 2020, underperforming the S&P 500 Index return of 18.4%. The results were driven primarily by the lack of exposure to actively managed common equities in the fourth quarter of 2020 and relative underperformance in international stocks versus the S&P 500 Index.
White Mountains maintains a portfolio of other long-term investments that consists primarily of unconsolidated entities, including Kudu’s Participation Contracts, a bank loan fund, private equity funds, hedge funds, Lloyd’s trust deposits, ILS funds and private debt investments. White Mountains’s portfolio of other long-term investments was $1.4 billion and $787 million as of December 31, 2021 and 2020. The change in other long-term investments was driven primarily by an increase in the fair value of Kudu’s Participation Contracts, the inclusion of invested assets relating to the Ark Transaction and the addition of a bank loan fund at Ark.
White Mountains’s other long-term investments portfolio returned 20.7% in 2021 compared to 2.5% in 2020. Investment returns for 2021 were driven primarily by $134 million of net investment income and realized and unrealized investment gains from Kudu’s Participation Contracts, $51 million of net investment income and realized and unrealized investment gains from private equity funds, and a $25 million increase in the fair value of White Mountains’s investment in PassportCard/DavidShield. Investment returns from White Mountains’s investment in PassportCard/DavidShield were driven primarily by growth in leisure travel premiums and commission revenues as the global economy recovered from the COVID-19 pandemic. Investment returns for 2020 were driven primarily by $45 million of net investment income and net unrealized gains from Kudu’s Participation Contracts, partially offset by a $10 million decrease in the fair value of White Mountains’s investment in PassportCard/DavidShield, where the global slowdown in travel activity in reaction to the COVID-19 pandemic caused a significant decline in premiums and revenues, and unrealized investment losses from hedge funds and private debt investments.

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Investment Returns—Year Ended December 31, 2020 versus Year Ended December 31, 2019
White Mountains’s pre-tax total return on invested assets was 31.9% in 2020. This return included $746 million of net investment income and net realized and unrealized investment gains from MediaAlpha. Excluding MediaAlpha, the total return on invested assets was 4.6% in 2020. Investment returns in 2020 were impacted by White Mountains’s decision to liquidate its portfolio of common equity securities in the second half of 2020 in preparation for funding the Ark Transaction as equity markets rallied in the fourth quarter. White Mountains’s pre-tax total return on invested assets was 20.4% in 2019. This return included $188 million of net investment income and net unrealized investment gains from MediaAlpha. Excluding MediaAlpha, the total return on invested assets was 13.0% in 2019. Investment returns in 2019 benefited from White Mountains’s decision to increase equity exposure after markets declined sharply at the end of 2018 ahead of the strong rally in equity markets during 2019.

Fixed Income Results
White Mountains’s fixed income portfolio, including short-term investments, was $1.4 billion as of December 31, 2020 and 2019, which represented 46% and 48% of total invested assets. The duration of White Mountains’s fixed income portfolio, including short-term investments, was 3.2 years and 2.8 years as of December 31, 2020 and 2019. White Mountains’s fixed income portfolio included fixed maturity investments and short-term investments in the HG Re Collateral Trusts of $432 million and $320 million as of December 31, 2020 and 2019.
White Mountains’s fixed income portfolio returned 4.9% in 2020 compared to 6.1% in 2019, underperforming the Bloomberg Barclays U.S. Intermediate Aggregate Index returns of 5.6% and 6.7% for the comparable periods. The results for both periods were driven primarily by the short duration positioning of White Mountains’s fixed income portfolio as interest rates declined significantly during the periods.

Common Equity Securities, Investment in MediaAlpha and Other Long-Term Investments Results
White Mountains’s portfolio of common equity securities, its investment in MediaAlpha and other long-term investments was $1.6 billion and $1.5 billion as of December 31, 2020 and 2019, which represented 54% and 52% of total invested assets. See Note 3 “Investment Securities”. The change was primarily driven by an increase in the fair value of White Mountains’s investment in MediaAlpha and an increase in other long-term investments, partially offset by the sale of common equity securities during the second half of 2020 in preparation for funding the Ark Transaction.
White Mountains’s portfolio of common equity securities, its investment in MediaAlpha and other long-term investments returned 80.0% in 2020, which included $746 million of net investment income and net realized and unrealized investment gains from MediaAlpha. White Mountains’s portfolio of common equity securities and other long-term investments returned 4.9% in 2020. White Mountains’s portfolio of common equity securities, its investment in MediaAlpha and other long-term investments returned 36.9% in 2019, which included $188 million of net investment income and unrealized investment gains from MediaAlpha. White Mountains’s portfolio of common equity securities and other long-term investments returned 20.8% in 2019.
Historically, White Mountains’s portfolio of common equity securities consisted of a portfolio of ETFs and publicly-traded common equity securities actively managed by select third-party registered investment advisers. During the second half of 2020, White Mountains liquidated its portfolio of common equity securities, including its portfolio of ETFs and international common equity securities, in preparation for funding the Ark Transaction. As of December 31, 2019, White Mountains’s portfolio of common equity securities was $684 million as of December 31, 2019.
White Mountains’s portfolio of common equity securities returned 3.6% in 2020 compared to 29.1% in 2019, underperforming the S&P 500 Index returns of 18.4% and 31.5% for the comparable periods. The results for 2020 were driven primarily by White Mountains’s lack of common equity exposure during the fourth quarter equity market rally and the relative underperformance from White Mountains’s international common equity portfolios versus the S&P 500 Index prior to the liquidation of these positions. The results for 2019 were driven primarily by relative underperformance in White Mountains���s international common equity portfolios versus the S&P 500 Index.
White Mountains’s portfolio of ETFs was fully liquidated as of December 31, 2020 and totaled $536 million as of December 31, 2019. In 2020 and 2019, White Mountains’s portfolio of ETFs essentially earned the effective index return, before expenses, over the period in which White Mountains was invested in these funds. At the end of the third quarter of 2020, White Mountains fully redeemed its actively managed common equity portfolio. White Mountains’s actively managed common equity portfolio was $147 million as of December 31, 2019. White Mountains’s actively managed common equity portfolio returned -11.0% in 2020 compared to 24.2% in 2019, underperforming the S&P 500 Index return of 18.4% and 31.5% for the comparable periods. The 2020 results were driven primarily by the lack of exposure to actively managed common equities in the fourth quarter of 2020 and relative underperformance in international stocks versus the S&P 500 Index. The 2019 results were driven primarily by relative underperformance in White Mountains’s international commonlisted equity portfoliosfunds, a number of which employ a market neutral strategy, versus the S&P 500 Index.
White Mountains’s portfolio of other long-term investments was $787 million$1.5 billion and $676 million$1.4 billion as of December 31, 20202022 and 2019. The change in2021. White Mountains’s portfolio of other long-term investments was primarily driven by an increasereturned 10.5% in the fair value of Kudu’s Participation Contracts.
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White Mountains other long-term investments portfolio returned 2.5% in 20202022 compared to 6.1%20.7% in 2019.2021. Investment returns for 20202022 were driven primarily by $45 million of net investment income and net unrealized gains from Kudu’s Participation Contracts, partially offset by a $10 million decrease in the fair value of White Mountains’s investment in PassportCard/DavidShield, where the global slowdown in travel activity in reaction to the COVID-19 pandemic caused a significant decline in premiums and revenuesrealized and unrealized investment losses from hedge funds and private debt investments.
Investment returns for 2019 were driven primarily by $21 million of net investment income and net unrealized gains from Kudu’s Participation Contracts, and $15 million of net investment income and net realized and unrealized investment gains from private equity funds.funds, partially offset by unrealized losses from foreign currency. Investment returns for 2021 were driven primarily by net investment income and net realized and unrealized investment gains from Kudu’s Participation Contracts, net investment income and net realized and unrealized investment gains from private equity funds, and net unrealized gains from certain unconsolidated entities.

Portfolio Composition

The following table presents the composition of White Mountains’s total operations investment portfolio as of December 31, 20212023 and 2020:2022:
December 31, 2021December 31, 2020
December 31, 2023December 31, 2023December 31, 2022
$ in Millions$ in MillionsCarrying Value% of TotalCarrying Value% of Total$ in MillionsCarrying Value% of TotalCarrying Value% of Total
Fixed maturity investmentsFixed maturity investments$1,908.9 44.8 %$1,207.2 41.1 %Fixed maturity investments$2,109.3 33.0 33.0 %$1,920.9 37.2 37.2 %
Short-term investmentsShort-term investments465.9 10.9 142.8 4.9 
Common equity securitiesCommon equity securities251.1 5.9 — — 
Common equity securities
Common equity securities
Investment in MediaAlphaInvestment in MediaAlpha261.6 6.1 802.2 27.3 
Other long-term investmentsOther long-term investments1,377.8 32.3 786.8 26.7 
Total investmentsTotal investments$4,265.3 100.0 %$2,939.0 100.0 %Total investments$6,388.7 100.0 100.0 %$5,170.0 100.0 100.0 %

The following table presents the breakdown of White Mountains’s fixed maturity investments as of December 31, 20212023 by credit class, based upon issuer credit ratings provided by Standard & Poor’s, or if unrated by Standard & Poor’s, long-term obligation ratings provided by Moody’s:
December 31, 2021
December 31, 2023December 31, 2023
$ in Millions$ in MillionsAmortized
Cost
% of TotalCarrying
Value
% of Total$ in MillionsAmortized Cost% of TotalCarrying Value% of Total
U.S. government and government-sponsored entities (1)
U.S. government and government-sponsored entities (1)
$467.7 24.7 %$467.4 24.5 %
U.S. government and government-sponsored entities (1)
$602.7 27.4 27.4 %$571.1 27.1 27.1 %
AAA/AaaAAA/Aaa135.7 7.2 136.5 7.1 
AA/AaAA/Aa332.6 17.5 343.4 18.0 
A/AA/A546.5 28.8 549.1 28.7 
BBB/BaaBBB/Baa404.7 21.4 403.8 21.2 
Other/not ratedOther/not rated8.3 0.4 8.7 0.5 
Other/not rated
Other/not rated
Total fixed maturity investmentsTotal fixed maturity investments$1,895.5 100.0 %$1,908.9 100.0 %Total fixed maturity investments$2,198.4 100.0 100.0 %$2,109.3 100.0 100.0 %
(1)Includes mortgage-backed securities, which carry the full faith and credit guaranty of the U.S. government (i.e., GNMA) or are guaranteed by a government sponsored entity (i.e., FNMA, FHLMC).

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The following table presents the cost or amortized cost and carrying value of White Mountains’s fixed maturity investments by contractual maturity as of December 31, 2021.2023. Actual maturities could differ from contractual maturities because borrowers may have the right to call or prepay certain obligations with or without call or prepayment penalties.
December 31, 2021
December 31, 2023
December 31, 2023
December 31, 2023
Millions
Millions
MillionsMillionsCost or Amortized
Cost
Carrying
Value
Due in one year or lessDue in one year or less$136.7 $137.3 
Due in one year or less
Due in one year or less
Due after one year through five years
Due after one year through five years
Due after one year through five yearsDue after one year through five years866.2 865.0 
Due after five years through ten yearsDue after five years through ten years365.7 371.5 
Due after five years through ten years
Due after five years through ten years
Due after ten yearsDue after ten years113.2 122.5 
Due after ten years
Due after ten years
Mortgage and asset-backed securities and collateralized loan
obligations
Mortgage and asset-backed securities and collateralized loan
obligations
Mortgage and asset-backed securities and collateralized loan obligationsMortgage and asset-backed securities and collateralized loan obligations413.7 412.6 
Total fixed maturity investmentsTotal fixed maturity investments$1,895.5 $1,908.9 
Total fixed maturity investments
Total fixed maturity investments
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The following table presents the composition of White Mountains’s other long-term investments portfolio as of December 31, 20212023 and 2020:2022:
December 31, 2021December 31, 2020
December 31, 2023December 31, 2023December 31, 2022
$ in Millions$ in MillionsCarrying Value% of TotalCarrying Value% of Total$ in MillionsCarrying Value% of TotalCarrying Value% of Total
Kudu Participation Contracts$669.5 48.6 %$400.6 50.9 %
Kudu’s Participation ContractsKudu’s Participation Contracts$890.5 44.6 %$695.9 46.8 %
PassportCard/DavidShieldPassportCard/DavidShield120.0 8.7 95.0 12.1 
Elementum Holdings L.P.Elementum Holdings L.P.45.0 3.3 55.1 7.0 
Other unconsolidated entitiesOther unconsolidated entities34.4 2.5 42.4 5.4 
Total unconsolidated entitiesTotal unconsolidated entities868.9 593.1 
Private equity funds and hedge funds
Private equity funds and hedge funds
Private equity funds and hedge funds
Bank loan fundBank loan fund163.0 11.8 — — 
Private equity funds and hedge funds153.8 11.2 121.2 15.4 
ILS funds
Lloyd’s trust depositsLloyd’s trust deposits113.8 8.3 — — 
ILS funds51.9 3.8 51.4 6.5 
Private debt investments14.11.0 21.12.7 
was
OtherOther12.3 0.8 — — 
Total other long-term investmentsTotal other long-term investments$1,377.8 100.0 %$786.8 100.0 %Total other long-term investments$1,998.2 100.0 100.0 %$1,488.0 100.0 100.0 %

Foreign Currency Exposure

As of December 31, 2021,2023, White Mountains had foreign currency exposure on $311$204 million of net assets primarily related to Ark’sArk/WM Outrigger’s non-U.S. business, NSM’s U.K.-based operations, Kudu’s non-U.S. Participation Contracts and certain other foreign consolidated and unconsolidated entities.
The following table presents the fair value of White Mountains’s foreign denominated net assets (net liabilities)(liabilities) by segment as of December 31, 2021:2023:
Currency
$ in Millions
Currency
$ in Millions
ArkNSMKuduOther OperationsTotal Fair Value
% of Total Shareholders Equity
Currency
$ in Millions
Currency
$ in Millions
CADCAD$55.4 $— $81.3 $— $136.7 3.7 %
GBP7.7 118.6 — — 126.3 3.4 
CAD
CAD
AUD
AUD
AUDAUD23.3 — 44.7 — 68.0 1.8 
EUREUR(56.2)— — 32.3 (23.9)(.6)
EUR
EUR
GBP
GBP
GBP
All other
All other
All otherAll other— — — 3.6 3.6 .1 
TotalTotal$30.2 $118.6 $126.0 $35.9 $310.7 8.4 %
Total
Total
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III. Income Taxes

On December 27, 2023, Bermuda enacted a corporate income tax that will generally become effective on January 1, 2025. The CompanyBermuda legislation defers the effective date until January 1, 2030, for Bermuda companies in consolidated groups that meet certain requirements. To qualify for the deferral, the group must (i) have permanent establishments in six or fewer countries, (ii) have less than €50 million of net tangible assets outside of the country where the group has the largest amount of net tangible assets and its(iii) not have a Bermuda domiciled subsidiaries are notcompany directly or indirectly owned by a parent entity that is subject to Bermuda income tax under current Bermuda law. In the event there is a changeIncome Inclusion Rule of Pillar Two in any jurisdiction. White Mountains expects to meet the current law and taxes are imposed, the Bermuda Exempted Undertakings Tax Protection Act of 1966 states that the Company and its Bermuda domiciled subsidiaries wouldrequirements to be exempt from suchthe Bermuda corporate income tax until MarchJanuary 1, 2030. The Bermuda legislation also provides for an economic transition adjustment that will reduce future years’ taxable income. Under GAAP, this economic transition adjustment was required to be recognized as a net deferred tax asset as of December 31, 2035.2023. Accordingly, White Mountains’s net income for 2023 included a net deferred tax benefit of $68 million, of which $51 million was recorded at Ark and $17 million was recorded at HG Global.
On December 15, 2022, European Union Member States voted to adopt the EU Minimum Tax Directive in conformity with the OECD’s Pillar Two initiative. The CompanyEU Minimum Tax Directive requires European Union Member States to enact conforming law by December 31, 2023. The main rule of the EU Minimum Tax Directive, the IIR will become effective for fiscal years beginning on or after December 31, 2023, while the UTPR will become effective for fiscal years beginning on or after December 31, 2024. On December 20, 2023, Luxemburg enacted conforming Pillar Two legislation including the IIR, UTPR and the associated Qualified Domestic Minimum Top-Up Tax (“QDMTT”). The Luxembourg legislation defers the effective date of the UTPR until fiscal years beginning on or after December 31, 2029 for Luxembourg companies in consolidated groups with a non-EU parent company that meet certain requirements. To qualify for the deferral, the group must (i) have permanent establishments in six or fewer countries and (ii) have less than €50 million of net tangible assets outside of the country where the group has subsidiariesthe largest amount of net tangible assets. White Mountains expects to meet the requirements to be exempt from the Luxembourg UTPR until January 1, 2030.
On July 11, 2023, the U.K. enacted conforming legislation adopting the Pillar Two IIR and branches that operate in various other jurisdictions around the world that are subjectassociated QDMTT which will become effective for fiscal years beginning on or after December 31, 2023. The U.K. has proposed legislation to adopt the Pillar Two UTPR effective for fiscal years beginning on or after December 31, 2024; however, this legislation has not yet been enacted.
On August 16, 2022, the U.S. enacted the Inflation Reduction Act (the “IRA”). White Mountains has evaluated the tax inprovisions of the jurisdictions inIRA, the most significant of which they operate. relate to the corporate alternative minimum tax and the tax on share repurchases, and does not expect the legislation to have a material impact on its results of operations.
As of December 31, 2021,2023, the primary jurisdictions in which the Company’s subsidiaries and branches operate and were subject to tax are Ireland, Israel, Luxembourg, the United Kingdom and the United States.
On December 14, 2021, the OECD issued a reportWhite Mountains reported income tax benefit of $16 million in 2023 on the Global Anti-Base Erosion (“GloBE”) rules.pre-tax income from continuing operations of $565 million. The GloBE rules provide for a coordinated system of taxation intended to ensure large multinational enterprise groups pay a minimum level of tax of 15% on the income arising in each of the jurisdictions where they operate. It would do so by imposing a top-up tax on profits arising in a jurisdiction whenever thedifference between White Mountains’s effective tax rate is below the minimum rate. Expanded guidance on the GloBE rules is forthcoming. Depending on which countries implement legislation under the GloBE rules, the income of members of the Company‘s group could be subject to higher rates of tax. While the OECD is targeting 2023 as the year for implementation, the actual implementation will depend on each country implementing specific legislation. The timing and impact of these rules on the Company remain uncertain.
On January 1, 2020, White Mountains adopted ASU 2019-12, Simplifying the Accounting for Income Taxes (ASC740) (“ASU 2019-12”). For periods subsequent to the adoption of ASU 2019-12, White Mountains has recorded both the tax expense related to BAM’s MSC and the relatedcurrent U.S. statutory rate of 21% was driven primarily by income generated in jurisdictions with lower tax rates than the United States, a full valuation allowance on suchnet deferred tax assets in certain U.S. operations (consisting of Other Operations and BAM), withholding taxes through non-controlling interest equity. Priorand state income taxes. The effective rate was also different from the U.S. statutory rate of 21% due to the adoptionrecording of ASU 2019-12, White Mountains recorded thea $68 million deferred tax expensebenefit related to BAM’s MSC directly to non-controlling interest equity, while the valuation allowance on such taxes was recorded through the income statement.Bermuda economic transition adjustment.
White Mountains reported income tax expense of $39$41 million in 20212022 on pre-tax loss from continuing operations of $302$149 million. The difference between White Mountains’s effective tax rate and the current U.S. statutory rate of 21% was driven primarily by losses generated in jurisdictions with lower tax rates than the United States, a full valuation allowance on net deferred tax assets in certain U.S. operations consisting(consisting of the WM Adams Holdings, Inc. consolidated tax group included within the Other Operations segment and BAM,BAM), withholding taxes and state income taxes.
White Mountains reported income tax expense of $44 million in 2021 on pre-tax loss from continuing operations of $274 million. The difference between White Mountains’s effective tax rate and the current U.S. statutory rate of 21% was driven primarily by losses generated in jurisdictions with lower tax rates than the United States, a full valuation allowance on net deferred tax assets in certain U.S. operations (consisting of Other Operations and BAM), and state income taxes. The effective rate was also different from the U.S. statutory rate of 21% due to additional tax expense related to the revaluation of U.K. deferred tax assets and liabilities. On June 10, 2021, the U.K. enacted an increase in its corporate tax rate from 19% to 25% for periods after April 1, 2023. During 2021, White Mountains increased its net U.K. deferred tax liability to reflect the higher tax rate.
White Mountains reported income tax benefit of $21 million in 2020 on pre-tax income from continuing operations of $645 million. The difference between White Mountains’s effective tax rate and the current U.S. federal statutory rate of 21% was driven primarily by a $131 million release of a deferred tax liability as a result of an internal reorganization in connection with the MediaAlpha IPO and income generated in jurisdictions with lower tax rates than the United States. Also in 2020, $43 million of tax expense was recorded for state income taxes, withholding taxes and the establishment of a partial valuation allowance on deferred tax assets of various companies, entities and investments that are included in the Other Operations segment.
White Mountains reported income tax expense of $29 million in 2019 on pre-tax income from continuing operations of $405 million. The difference between White Mountains’s effective tax rate and the current U.S. federal statutory rate of 21% was driven primarily by income generated in jurisdictions with lower tax rates than the United States, state income taxes and a tax benefit recorded at BAM related to its MSC collected. The effective tax rate was also different from the U.S statutory rate of 21% due to the release of a valuation allowance on the net deferred tax assets of the U.S. consolidated group Guilford Holdings, Inc. and subsidiaries, which included Kudu, White Mountains’s investment in MediaAlpha, WM Capital, WM Advisors and certain other entities and investments that are included in the Other Operations segment. In 2019, BAM recorded a tax benefit of $10 million associated with the valuation allowance on taxes related to MSC collected that was included in the effective tax rate.

6466


IV. Discontinued Operations

NSM

On August 1, 2022, White Mountains closed the NSM Transaction. White Mountains received $1.4 billion in net cash proceeds at closing and recognized a net gain of $876 million in the third quarter of 2022, which was comprised of $887 million of net gain from sale of discontinued operations and $3 million of comprehensive income related to the recognition of foreign currency translation gain (loss) from the sale, partially offset by $14 million of compensation and other costs related to the transaction recorded in Other Operations. See Note 2 — “Significant Transactions” on page F-17.
White Mountains reported net income from discontinued operations, net of tax, for NSM Group of $16 million for the period from January 1, 2022 to August 1, 2022. White Mountains reported net loss from discontinued operations, net of tax, for NSM Group of $23 million for the year ended December 31, 2021. The net loss from discontinued operations, net of tax, for NSM Group for the year ended December 31, 2021 included a loss of $29 million related to the sale of a subsidiary. See Note 20 — “Held for Sale and Discontinued Operations” on page F-70.

Sirius Group

On April 18, 2016, White Mountains completed the sale of Sirius International Insurance Group, Ltd. (“Sirius Group”) to CM International Pte. Ltd. and CM Bermuda Limited (collectively, “CMI”). In connection with the sale, White Mountains indemnified Sirius Group against the loss of certain interest deductions claimed by Sirius Group related to periods prior to the sale of Sirius Group to CMI that had been disputed by the Swedish Tax Agency (STA). In late October 2018, the Swedish Administrative Court ruled against Sirius Group on its appeal of the STA’s denial of these interest deductions. As a result, in 2018 White Mountains recorded a loss of $17 million within net gain (loss) on sale ofin discontinued operations reflecting the value of these interest deductions.
In April 2021, the STA informed the Swedish Administrative Court of Appeal that Sirius Group should prevail in its appeal and that the interest deductions should not be disallowed. In June 2021, the Swedish Administrative Court of Appeal ruled in Sirius Group’s favor. As a result, in 2021 White Mountains recorded a gain of $19 million in discontinued operations to reverse the accrued liability, including foreign currency translation. See Note 2120“Held for Sale and Discontinued Operations” on page F-76.F-70.

LIQUIDITY AND CAPITAL RESOURCES

Operating Cash and Short-term Investments

Holding Company Level
The primary sources of cash for the Company and certain of its intermediate holding companies are expected to be distributions from its insurance, reinsurance and other operating subsidiaries, net investment income, proceeds from sales, repayments and maturities of investments, capital raising activities and, from time to time, proceeds from sales of operating subsidiaries. The primary uses of cash are expected to be general and administrative expenses, purchases of investments, payments to tax authorities, payments on and repurchases/retirements of its debt obligations, dividend payments to holders of the Company’s common shares, distributions to non-controllingnoncontrolling interest holders of consolidated subsidiaries, contributions to operating subsidiaries and, from time to time, purchases of operating subsidiaries and repurchases of the Company’s common shares.

Operating Subsidiary Level 
The primary sources of cash for White Mountains’s insurance, reinsurance and other operating subsidiaries are expected to be premium and fee collections, commissions, net investment income, proceeds from sales, repayments and maturities of investments, contributions from holding companies and capital raising activities. The primary uses of cash are expected to be claim payments, policy acquisition costs, general and administrative expenses, broker commission expenses, cost of sales, purchases of investments, payments to tax authorities, payments on and repurchases/retirements of its debt obligations, distributions made to holding companies, distributions to non-controllingnoncontrolling interest holders and, from time to time, purchases of operating subsidiaries.
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Both internal and external forces influence White Mountains’s financial condition, results of operations and cash flows. Premium and fee collections, investment returns, claim payments and cost of sales may be impacted by changing rates of inflation and other economic conditions. Some time may lapse between the occurrence of an insured loss, the reporting of the loss to White Mountains’s insurance and reinsurance operating subsidiaries and the settlement of the liability for that loss. The exact timing of the payment of losses and benefits cannot be predicted with certainty. White Mountains’s insurance and reinsurance operating subsidiaries maintain portfolios of invested assets with varying maturities and a substantial amount of cash and short-term investments to provide adequate liquidity for the payment of claims.
Management believes that White Mountains’s cash balances, cash flows from operations and routine sales and maturities of investments are adequate to meet expected cash requirements for the foreseeable future onat both a holding company and insurance, reinsurance and other operating subsidiary level.

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Dividend Capacity

Following is a description of the dividend capacity of White Mountains’s insurance and reinsurance and other operating subsidiaries:

HG Global/BAM
As of December 31, 2021,2023, HG Global had $619 million face value of preferred shares outstanding, of which White Mountains owned 96.9%. Holders of the HG Global preferred shares are entitled to receive cumulative dividends at a fixed annual rate of 6.0% on a quarterly basis, when and if declared by HG Global. During 2021, HG Global declared and paid a $22 million preferred dividend, of which $21 million was paid to White Mountains. As of December 31, 2021,2023, HG Global had accrued $415 million of dividends payable to holders of its preferred shares, $400 million of which $401 million wasis payable to White Mountains and eliminated in consolidation. As of December 31, 2021,2023, HG Global and its subsidiaries had $3less than $1 million of net unrestricted cash outside of HG Re.
On April 29, 2022, HG Global received the proceeds of its new $150 million, 10-year term loan credit facility. In turn, on May 2, 2022, HG Global paid a $120 million cash dividend to preferred shareholders, of which $116 million was paid to White Mountains.
HG Re is a Special Purpose Insurerspecial purpose insurer subject to regulation and supervision by the BMA butBMA. HG Re does not require regulatory approval to pay dividends. However, HG Re’sdividends; however, its dividend capacity is limited to amounts held outside of the Collateral Trusts pursuant to the FLRT with BAM. As of December 31, 2021,2023, HG Re had $760$3 million of net unrestricted cash. As of December 31, 2023, HG Re had $106 million of accrued interest on the BAM Surplus Notes held outside the Collateral Trusts. As of December 31, 2023, HG Re had $784 million of statutory capital and surplus and $852$949 million of assets held in the Collateral Trusts pursuant to the FLRT with BAM.Trusts.
On a monthly basis, BAM deposits cash equal to ceded premiums, net of ceding commissions, due to HG Re under the FLRT directly into the Regulation 114 Trust. The Regulation 114 Trust target balance is equal to gross cededHG Re’s unearned premiums and unpaid ceded loss and LAE reserves, if any.  If, at the end of any quarter, the Regulation 114 Trust balance is below the target balance, funds will be withdrawn from the Supplemental Trust and deposited into the Regulation 114 Trust in an amount equal to the shortfall.  If, at the end of any quarter, the Regulation 114 Trust balance is above 102% of the target balance, funds will be withdrawn from the Regulation 114 Trust and deposited into the Supplemental Trust.  The Regulation 114 Trust balance as of December 31, 2023 and 2022 was $342 million and $289 million.
The Supplemental Trust Target Balance is $603 million, less the amount of cash and securities in the Regulation 114 Trust in excess of its target balance. If, at the end of any quarter, the Supplemental Trust balance exceeds the Supplemental Trust Target Balance, such excess may be distributed to HG Re.  The distribution will be made first as an assignment of accrued interest on the BAM Surplus Notes and second in cash and/or fixed income securities.  As the BAM Surplus Notes are repaid over time, the BAM Surplus Notes will be replaced in the Supplemental Trust by cash and fixed income securities.
As The Supplemental Trust balance as of December 31, 2021, the Collateral Trusts held assets of $8522023 and 2022 was $607 million and $568 million, which included $481$247 million and $214 million of cash, investments and investments, $365accrued investment income, $322 million and $340 million of BAM Surplus Notes and $6$38 million and $14 million of interest receivable on the BAM Surplus Notes.
As of December 31, 2021, HG Re had $92023, the Collateral Trusts held assets of $949 million, which included $589 million of cash, and investments and $117accrued investment income, $322 million of accruedBAM Surplus Notes and $38 million of interest receivable on the BAM Surplus Notes held outside the Collateral Trusts.Notes.
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Through 2024, the interest rate on the BAM Surplus Notes is a variable rate equal to the one-year U.S. Treasury rate plus 300 basis points, set annually. During 2022,Beginning in 2025, the rate will be fixed through maturity at the higher of the 2024 variable rate or 8.0%. Accordingly, beginning in 2024 and through maturity, the interest rate on the BAM Surplus Notes will be 3.2%8.2%. Beginning in 2025, the interest rate will be fixed at the higher of the then current variable rate or 8.0%.Under its agreements with HG Global, BAM is required to seek regulatory approval to pay interestprincipal and principalinterest on the BAM Surplus Notes only to the extent that its remaining qualified statutory capital and other capital resources continue to support its outstanding obligations, its business plan and its “AA/stable” rating from Standard & Poor’s. No payment of principal or interest on the BAM Surplus Notes may be made without the approval of the NYDFS.
In December 2021,2023, BAM made a $34$27 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $24$18 million was a repayment of principal held in the Supplemental Trust, $2 million was a payment of accrued interest held in the Supplemental Trust and $10$7 million was a payment of accrued interest held outside the Supplemental Trust.
See Note 10 — “Municipal Bond Guarantee Insurance.”

ArkArk/WM Outrigger
During any 12-month period, GAIL, a class 4 licensed Bermuda insurer, has the ability to (i) make capital distributions based onof up to 15% of its total statutory capital per the previous year’s statutory financial statements, or (ii) make dividend payments based onof up to 25% of its total statutory capital and surplus per the previous year’s statutory financial statements, without prior approval of Bermuda regulatory authorities. Accordingly, White Mountains expects GAIL will have the ability to make capital distributionspay a dividend of $114up to $272 million during 2022,2024, which is equal to 15%25% of its December 31, 20212023 statutory capital and surplus of $758$1,088 million, subject to meeting all appropriate liquidity and solvency requirements and the filing of its December 31, 20212023 statutory financial statements. During 2021,2023, GAIL did not paypaid a $15 million dividend to its immediate parent.
During 2023, Ark paid $24 million of dividends to shareholders, $17 million of which was paid to White Mountains. As of December 31, 2021,2023, Ark and its intermediate holding companies had $4$1 million of net unrestricted cash, short-term investments and fixed maturity investments outside of its regulated and unregulated insurance and reinsurance operating subsidiaries. During 2021, Ark did
WM Outrigger Re is a special purpose insurer subject to regulation and supervision by the BMA. WM Outrigger Re does not require regulatory approval to pay any dividendsdividends; however, its dividend capacity is limited to its immediate parent.amounts held outside of the collateral trust pursuant to the reinsurance agreement with GAIL. As of December 31, 2023, WM Outrigger Re had less than $1 million of net unrestricted cash and investments held outside the collateral trust. As of December 31, 2023, WM Outrigger Re had $273 million of statutory capital and surplus and $265 million of assets held in the collateral trusts pursuant to the reinsurance agreement with GAIL.


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NSMKudu
During 2021, NSM2023, Kudu distributed $8$83 million to unitholders, substantially all$78 million of which was paid to White Mountains. As of December 31, 2021, NSM2023, Kudu had $22$16 million of net unrestricted cash and short-term investments.

Kudu
During 2021, Kudu distributed $19 million to unitholders, substantially all of which was paid to White Mountains. As of December 31, 2021, Kudu had $17 million of net unrestricted cash and short-term investments.
Other Operations
During 2021,2023, White Mountains paid a $3 million common share dividend.
As of December 31, 2021,2023, the Company and its intermediate holding companies had $454$673 million of net unrestricted cash, short-term investments and fixed maturity investments, $262$255 million of MediaAlpha common stock, $138 million of common equity securities and $171$426 million of private equity and hedge funds, ILS funds and ILS funds.unconsolidated entities.

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Financing

The following table summarizespresents White Mountains’s capital structure as of December 31, 20212023 and 2020:2022:
December 31,December 31,
$ in Millions$ in Millions20232022
HG Global Senior Notes (1)
HG Global Senior Notes (1)
HG Global Senior Notes (1)
Ark 2007 Subordinated Notes (1)
Ark 2021 Subordinated Notes (1)(2)
Kudu Credit Facility (1)(2)
December 31,
$ in Millions20212020
Other Operations debt (1)(2)
Ark 2007 Subordinated Notes (1)
$30.0 $— 
Ark 2021 Subordinated Notes (1)(2)
155.9 — 
NSM Bank Facility (1)(2)
271.2 271.3 
Other NSM debt (1)
.9 1.3 
Kudu Credit Facility (1)(2)
218.2 — 
Other Operations debt (1)(2)
Kudu Bank Facility (1)(2)
 86.3 
Other Operations debt (1)(2)
Other Operations debt (1)(2)
16.8 17.5 
Total debtTotal debt693.0 376.4 
Non-controlling interests — excluding BAM280.6 35.2 
Noncontrolling interests — excluding BAM
Total White Mountains’s common shareholders’ equityTotal White Mountains’s common shareholders’ equity3,548.1 3,906.0 
Total capitalTotal capital4,521.7 4,317.6 
Time-value discount on expected future payments on the BAM Surplus Notes (3)
(125.9)(142.5)
HG Global’s unearned premium reserve (3)
HG Global’s unearned premium reserve (3)
214.6 190.0 
HG Global’s net deferred acquisition costs (3)
HG Global’s net deferred acquisition costs (3)
(60.8)(52.4)
Time-value discount on expected future payments on the BAM Surplus Notes (3)
Total adjusted capitalTotal adjusted capital$4,549.6 $4,312.7 
Total debt to total adjusted capitalTotal debt to total adjusted capital15.2 %8.7 %
Total debt to total adjusted capital
Total debt to total adjusted capital10.5 %12.1 %
(1)See Note 7 — “Debt” for details of debt arrangements.
(2) Net of unamortized issuance costscosts.
(3) Amount reflects White Mountains's preferred share ownership in HG Global of 96.9%.

Management believes that White Mountains has the flexibility and capacity to obtain funds externally through debt or equity financing on both a short-term and long-term basis. However, White Mountains can provide no assurance that, if needed, it would be able to obtain additional debt or equity financing on satisfactory terms, if at all.
It is possible that, in the future, one or more of the rating agencies may lower White Mountains’s and its subsidiaries’ existing ratings. If one or more of its ratings were lowered, White Mountains could incur higher borrowing costs on future borrowings, and its ability to access the capital markets could be impacted.

Covenant Compliance
As of December 31, 2021,2023, White Mountains was in compliance, in all material respects, with all of the covenants under all of its debt instruments.

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Contractual Obligations and Commitments

The following table presents White Mountains’s material contractual obligations and commitments as of December 31, 2021:2023:
MillionsMillionsDue in Less Than One YearDue in Two to Three YearsDue in Four to Five YearsDue After
Five Years
TotalMillionsDue in Less Than One YearDue in Two to Three YearsDue in Four to Five YearsDue After
Five Years
Total
Loss and LAE reserves (1)
Loss and LAE reserves (1)
$326.7 $365.7 $122.0 $80.3 $894.7 
DebtDebt5.7 14.5 221.6 470.4 712.2 
Interest on debt
Interest on debt
42.8 78.8 65.9 158.7 346.2 
Long-term incentive compensationLong-term incentive compensation25.9 31.6 — — 57.5 
Contingent consideration (2)
Contingent consideration (2)
38.2 — — — 38.2 
Operating leases (3)
Operating leases (3)
10.9 18.4 11.1 11.9 52.3 
Total contractual obligations and commitmentsTotal contractual obligations and commitments$450.2 $509.0 $420.6 $721.3 $2,101.1 
(1) Represents expected future cash outflows resulting from loss and LAE payments. The amounts presented are gross of reinsurance recoverables on unpaid losses of $428.9$340.8 as of December 31, 2021.2023.
(2) The contingent consideration liabilities are primarily related to White Mountains’s acquisition of Ark and NSM’s previous acquisitions of KBK and its other U.K.-based operations.Ark. See Note 2 — “Significant Transactions” on page F-17.F-17.
(3) Amounts includeIncludes amounts related to BAM’s operating lease amountsleases of $2.2, $4.0, $2.4$2.1, $3.0 and $0$0.5 that are due in less than one year, two to three years and four to five years, and due after five years, which are attributed to non-controllingnoncontrolling interests. Includes amounts related to Ark’s new operating lease, which will not commence until 2024, of $4.2 and $17.5 that are due in four to five years and after five years.
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The long-term incentive compensation balances included in the table above include amounts payable for performance shares. Exact amounts to be paid for performance shares cannot be predicted with certainty, as the ultimate amounts of these liabilities are based on the future performance of White Mountains and the market price of the Company’s common shares at the time the payments are made.
The estimated payments reflected in the table are based on current accrual factors (including performance relative to targets and common share price) and assume that all outstanding balances were 100% vested as of December 31, 2021.2023.
There are no provisions within White Mountains’s operating leasinglease agreements that would trigger acceleration of future lease payments.
White Mountains does not finance its operations through the securitization of its trade receivables, through special purpose entities or through synthetic leases. Further, White Mountains has not entered into any material arrangements requiring it to guarantee payment of third-party debt or lease payments or to fund losses of an unconsolidated special purpose entity.
White Mountains also has future binding commitments to fund certain other long-term investments. These commitments, which totaled approximately $44$61 million as of December 31, 2021,2023, do not have fixed funding dates and are therefore excluded from the table above.

Share Repurchase Programs

White Mountains’s boardBoard of directorsDirectors has authorized the Company to repurchase its common shares from time to time, subject to market conditions. The repurchase authorizations do not have a stated expiration date. As of December 31, 2021,2023, White Mountains may repurchase an additional 451,224301,014 shares under these boardBoard authorizations. In addition, from time to time White Mountains has also repurchased its common shares through tenderself-tender offers that were separately approved by its boardBoard of directors.Directors.
The following table presents common shares repurchased by the Company as well as the average price per share as a percent of December 31, 20212023 GAAP book value per share, adjusted book value per share and market value per share.

Average Price PerAverage Price Per
Share as % ofShare as % of
AverageDecember 31, 2021December 31, 2021
SharesCostPriceAdjusted BookMarket Value
Average Price Per
Average Price Per
Average Price PerAverage Price Per
Share as % ofShare as % ofShare as % of
AverageAverageDecember 31, 2023December 31, 2023
SharesSharesCostPrice GAAP BookAdjusted BookMarket Value
Year EndedYear EndedRepurchased(Millions)Per ShareValue Per SharePer ShareYear EndedRepurchased(Millions)Per ShareValue Per ShareValue Per SharePer Share
December 31, 2023
December 31, 2023
December 31, 202324,165 $32.7 $1,354.88 82%80%90%
December 31, 2022
December 31, 2022
December 31, 2022461,256 $615.8 $1,335.11 81%78%89%
.
December 31, 2021December 31, 202198,511 $107.5 $1,091.29 92%108%
December 31, 202099,087 $85.1 $858.81 72%85%
.
December 31, 20195,679 $4.9 $857.69 72%85%
December 31, 2021
December 31, 202198,511 $107.5 $1,091.29 66%64%73%

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Cash Flows

Detailed information concerning White Mountains’s cash flows from continuing operations during 2021, 20202023, 2022 and 20192021 follows:

Cash flows from operations for the years ended 2021, 20202023, 2022 and 20192021

Net cash flows provided from (used for) operations was $39$404 million, $(61)$326 million and $(121)$(4) million for the years ended December 31, 2021, 20202023, 2022 and 2019.2021. Cash provided from (used for) operations was higher in 20212023 compared to 2020,2022, driven primarily by the cash inflow from Ark/WM Outrigger Re’s operations. Cash provided from (used for) operations was higher in 2022 compared to 2021, driven primarily by the cash inflow from Ark’s operations partially offset byand the deployments inproceeds from Kudu’s participation contracts and Ark’s transaction expensesParticipation Contracts sold.Cash used for operations was lower in 2020 compared to 2019, driven primarily by $55 million of net investment income received in 2020 from a dividend recapitalization at MediaAlpha. White Mountains does not believe these trends will have a meaningful impact on its future liquidity or its ability to meet its future cash requirements. As of December 31, 2021,2023, the Company and its intermediate holding companies had $454$673 million of net unrestricted cash, short-term investments and fixed maturity investments, $262$255 million of MediaAlpha common stock, $138 million of common equity securities and $171$426 million of private equity funds and hedge funds, ILS funds.funds and unconsolidated entities.

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Cash flows from investing and financing activities for the year ended December 31, 2023

Financing and Other Capital Activities
During 2023, the Company declared and paid a $3 million cash dividend to its common shareholders.
During 2023, White Mountains repurchased and retired 24,165 of its common shares
for $33 million. Of the shares White Mountains repurchased in 2023, 4,629 were to satisfy employee income tax withholding pursuant to employee benefit plans.
During 2023, BAM received $73 million in MSC.
During 2023, BAM repaid $18 million of principal and paid $9 million of accrued interest on the BAM Surplus Notes.
During 2023, Kudu borrowed $12 million in term loans under the Kudu Credit Facility.
During 2023, Kudu repaid $17 million in term loans under the Kudu Credit Facility.

Acquisitions and Dispositions
On June 28, 2023, White Mountains completed a tender offer to purchase 5.9 million additional shares of MediaAlpha at a purchase price of $10.00 per share for a total cost of $59 million.

Cash flows from investing and financing activities for the year ended December 31, 2022

Financing and Other Capital Activities
During 2022, the Company declared and paid a $3 million cash dividend to its common shareholders.
During 2022, White Mountains repurchased and retired 461,256 of its common shares for $616 million. The majority of these shares were repurchased through a self-tender offer that White Mountains completed on September 26, 2022, through which it repurchased 327,795 of its common shares at a purchase price of $1,400 per share for a total cost of approximately $461 million, including expenses. Of the shares White Mountains repurchased in 2022, 4,011 were to satisfy employee income tax withholding pursuant to employee benefit plans.
During 2022, HG Global received net proceeds of $147 million from the issuance of the HG Global Senior Notes.
During 2022, BAM received $81 million in MSC.
During 2022, BAM repaid $25 million of principal and paid $11 million of accrued interest on the BAM Surplus Notes.
During 2022, Kudu borrowed $35 million and repaid $45 million in term loans under the Kudu Credit Facility.

Acquisitions and Dispositions
On May 26, 2022, Kudu raised $115 million of equity capital (the “Kudu Transaction”) from Massachusetts Mutual Life Insurance Company (“Mass Mutual”), White Mountains and Kudu management. Mass Mutual, White Mountains and Kudu management contributed $64 million, $50 million and $1 million in the Kudu Transaction, respectively.
On August 1, 2022, White Mountains closed the previously announced NSM Transaction. White Mountains received $1.4 billion in net cash proceeds at closing.
On December 20, 2022, Outrigger Re Ltd. issued non-voting redeemable preference shares on behalf of four segregated accounts to White Mountains and other unrelated third-party investors. White Mountains purchased 100% of the preference shares issued by its segregated account, WM Outrigger Re, for $205 million.

Cash flows from investing and financing activities for the year ended December 31, 2021

Financing and Other Capital Activities
During 2021, the Company declared and paid a $3 million cash dividend to its common shareholders.
During 2021, White Mountains repurchased and retired 98,511 of its common shares for $108 million, 7,218 of which were repurchased under employee benefit plans for statutory withholding tax payments.
During 2021, BAM received $62 million in MSC.
During 2021, BAM repaid $24 million of principal and paid $10 million of accrued interest on the BAM Surplus Notes.
During 2021, Ark issued $163 million face value floating rate unsecured subordinated notes at par in three transactions for proceeds of $158 million, net of debt issuance costs, and repaid €12 million ($14 million based upon the foreign exchange spot rate at the date of repayment) of the outstanding principal balance on the subordinated note to Dekania Europe CDO II plc (“Ark 2007 Notes Tranche 2”).
During 2021, NSM repaid $3 million in term loans, borrowed $35 million in revolving loans to fund the acquisition of J.C. Taylor and repaid $32 million in revolving loans under the Ares Capital Corporation secured credit facility (the “NSM Bank Facility”).
During 2021, Kudu borrowed $3 million in term loans under the Kudu Bank Facility.
On March 23, 2021, Kudu entered into the Kudu Credit Facility with an initial draw of $102 million, of which $92 million was used to repay the outstanding principal balance on its term loans under the Kudu Bank Facility.During 2021, Kudu borrowed an additional $130 million and repaid $7 million in term loans under the Kudu Credit Facility.
During 2021, White Mountains’s Other Operations segment borrowed $3 million and repaid $8 million under its three secured credit facilities.
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Acquisitions and Dispositions
On January 1, 2021 White Mountains completed the Ark Transaction, which included contributing $605 million of equity capital to Ark, at a pre-money valuation of $300 million, and purchasing $41 million of shares from certain selling shareholders.In the fourth quarter of 2020, White Mountains prefunded/placed in escrow a total of $646 million in preparation for closing the Ark Transaction.
On March 23, 2021, MediaAlpha completed a secondary offering of 8.05 million shares.In the secondary offering, White Mountains sold 3.6 million shares at $46.00 per share ($44.62 per share net of underwriting fees) for net proceeds of $160 million.
On August 6, 2021, NSM acquired 100% of J.C. Taylor for $50 million of upfront cash consideration.


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Cash flows from investing and financing activities for the year ended December 31, 2020

Financing and Other Capital Activities
During 2020, the Company declared and paid a $3 million cash dividend to its common shareholders.
During 2020, White Mountains repurchased and retired 99,087 of its common shares for $85 million, 5,899 of which were repurchased under employee benefit plans for statutory withholding tax payments.
During 2020, BAM received $69 million in MSC.
During 2020, BAM repaid $70 million of principal and paid $25 million of accrued interest on the BAM Surplus Notes.
During 2020, HG Global declared and paid $23 million of preferred dividends, of which $22 million was paid to White Mountains.
During 2020, NSM borrowed £43 million ($52 million based upon the foreign exchange spot rate at the date of acquisition) of term loans under the NSM Bank Facility to fund the acquisition of Kingsbridge. Additionally, during 2020 NSM repaid $2 million of term loans under the NSM Bank Facility.
During 2020, Kudu borrowed $32 million in term loans under the Kudu Bank Facility.
During 2020, White Mountains’s Other Operations segment made no borrowings and repaid $2 million in term loans under its credit facilities.

Acquisitions and Dispositions
On April 7, 2020, NSM acquired 100% of Kingsbridge for £107 million ($132 million based upon the foreign exchange spot rate at the date of acquisition).
On May 7, 2020, White Mountains made an additional $15 million investment in PassportCard/DavidShield.
On October 30, 2020, MediaAlpha completed its initial public offering. In the offering, White Mountains sold 3,609,894 shares and received total proceeds of $64 million. White Mountains also received $55 million of net proceeds related to a dividend recapitalization at MediaAlpha, which was recorded as net investment income.
In the fourth quarter of 2020, White Mountains pre-funded/placed in escrow a total of $646 million in preparation for closing the Ark Transaction.

Cash flows from investing and financing activities for the year ended December 31, 2019

Financing and Other Capital Activities
During 2019, the Company declared and paid a $3 million cash dividend to its common shareholders.
During 2019, White Mountains repurchased and retired 5,679 of its common shares for $5 million, all of which were repurchased under employee benefit plans for statutory withholding tax payments.
During 2019, BAM received $55 million in MSC.
During 2019, BAM repaid $24 million of principal and paid $8 million of accrued interest on the BAM Surplus Notes.
During 2019, NSM borrowed $43 million of term loans under the NSM Bank Facility, which included $20 million and $23 million to fund the acquisitions of Embrace and the Renewal Rights from AIG, and $7 million of revolving credit loans. Additionally, during 2019 NSM repaid $2 million of term loans and $7 million of revolving credit loans under the NSM Bank Facility.
During 2019, Kudu borrowed $57 million in term loans under the Kudu Bank Facility and distributed $54 million to unitholders, of which $53 million was paid to White Mountains. As of December 31, 2019, Kudu had not made any payment
of principal on the Kudu Bank Facility.

Acquisitions and Dispositions
On February 26, 2019, White Mountains received net cash proceeds of $89 million from the 2019 MediaAlpha Transaction.
On April 1, 2019, NSM acquired 100% of Embrace for $72 million, net of cash acquired.
On April 4, 2019, White Mountains completed the Kudu Transaction for $81 million. In addition, White Mountains assumed all of Oaktree’s unfunded capital commitments to Kudu, increasing White Mountains’s total capital commitment to $250 million. During the fourth quarter of 2019, White Mountains increased its total capital commitment to Kudu by an additional $100 million to $350 million. Also during the fourth quarter of 2019, Kudu obtained a committed $124 million credit facility.
On May 31, 2019, White Mountains completed the Elementum Transaction for $55 million. As part of the Elementum Transaction, White Mountains also committed to invest $50 million in ILS funds managed by Elementum.
On June 28, 2019, NSM acquired the Renewal Rights from AIG for $83 million.

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TRANSACTIONS WITH RELATED PERSONS

White Mountains does not have any related party transactions to report as of December 31, 2021.2023.

NON-GAAP FINANCIAL MEASURES

This report includes thirteenfive non-GAAP financial measures that have been reconciled with their most comparable GAAP financial measures.

Adjusted book value per share
Adjusted book value per share is a non-GAAP financial measure which is derived by adjusting (i) the GAAP book value per share numerator and (ii) the common shares outstanding denominator, as described below.
The GAAP book value per share numerator is adjusted (i) to add back the unearned premium reserve, net of deferred acquisition costs, at HG Global and (ii) to include a discount for the time value of money arising from the modeled timing of cash payments of principal and interest on the BAM Surplus Notes and (ii) to add back theNotes.
The value of HG Global’s unearned premium reserve, net of deferred acquisition costs, at HG Global.was $195 million, $179 million and $159 million as of December 31, 2023, 2022 and 2021, respectively.
Under GAAP, White Mountains is required to carry the BAM Surplus Notes, including accrued interest, at nominal value with no consideration for time value of money. Based on a debt service model that forecasts operating results for BAM through maturity of the BAM Surplus Notes, the present value of the BAM Surplus Notes, including accrued interest and using an 8.0% discount rate, was estimated to be $130$91 million, $147$98 million and $157$130 million less than the nominal GAAP carrying values as of December 31, 2021, 20202023, 2022 and 2019, respectively.
The value of HG Global’s unearned premium reserve, net of deferred acquisition costs, was $159 million, $142 million and $119 million as of December 31, 2021, 2020 and 2019, respectively.
White Mountains believes these adjustments are useful to management and investors in analyzing the intrinsic value of HG Global, including the value of the BAM Surplus Notes and the value of the in-force business at HG Re, HG Global’s reinsurance subsidiary.
The denominator used in the calculation of adjusted book value per share equals the number of common shares outstanding adjusted to exclude unearned restricted common shares, the compensation cost of which, at the date of calculation, has yet to be amortized. Restricted common shares are earned on a straight-line basis over their vesting periods. The reconciliation of GAAP book value per share to adjusted book value per share is included on page 42.

Growth in adjusted book value per share excluding MediaAlpha
The growth in adjusted book value per share excluding net realized and unrealized investment losses from White Mountains’s investment in MediaAlpha on page 42 is a non-GAAP financial measure. White Mountains believes this measure to be useful to management and investors by showing the underlying performance of White Mountains in 2021 without regard to the impact of changes in MediaAlpha’s share price. A reconciliation from GAAP to the reported percentages is as follows:
Year Ended
December 31, 2021
Growth in GAAP book value per share(6.5)%
Adjustments to book value per share (see reconciliation on page 42)0.8%
Remove net realized and unrealized investment losses from
     White Mountains’s investment in MediaAlpha
10.0%
Growth in adjusted book value per share excluding net realized and
     unrealized investment losses from White Mountains’s investment
     in MediaAlpha
4.3%

BAM’s gross written premiums and MSC from new business
BAM’s gross written premiums and MSC from new business is a non-GAAP financial measure, which is derived by adjusting gross written premiums and MSC collected (i) to include the present value of future installment MSC not yet collected and (ii) to exclude the impact of gross written premium adjustments related to policies closed in prior periods. White Mountains believes these adjustments are useful to management and investors in evaluating the volume and pricing of new business closed during the period. The reconciliation from GAAP gross written premiums to gross written premiums and MSC from new business is included on page 46.

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Ark’s adjusted loss and loss adjustment expense, adjusted insurance acquisition expense, adjusted other underwriting expense and adjusted combined ratios
Ark’s adjusted loss and loss adjustment expense ratio, adjusted insurance acquisition expense ratio, adjusted other underwriting expense ratio and adjusted combined ratio are non-GAAP financial measures, which are derived by adjusting the GAAP ratios to add back the impact of whole-account quota-share reinsurance arrangements related to TPC Providers for the Syndicates. The impact of these reinsurance arrangements relates to years of account prior to the Ark Transaction. White Mountains believes these adjustments are useful to management and investors in evaluating Ark’s results on a fully aligned basis (i.e., 100% of the Syndicates’ results)45. The reconciliation from the GAAP ratios to the adjusted ratios is included on page 52.

NSM’s EBITDA and NSM’s adjusted EBITDA
NSM’s EBITDA and adjusted EBITDA are non-GAAP financial measures. EBITDA is a non-GAAP financial measure that excludes interest expense on debt, income tax (expense) benefit, depreciation and amortization of other intangible assets from GAAP net income (loss). Adjusted EBITDA is a non-GAAP financial measure that excludes certain other items in GAAP net income (loss) in addition to those excluded from EBITDA. The adjustments relate to (i) change in fair value of contingent consideration liabilities, (ii) non-cash equity-based compensation expense, (iii) impairments of intangible assets, (iv) loss on assets held for sale, (v) transaction expenses, (vi) fair value purchase accounting adjustment for deferred revenue, (vii) investments made in the development of new business lines, (viii) restructuring expenses and (ix) legal settlements. A description of each follows:
Change in fair value of contingent consideration liabilities - Contingent consideration liabilities are amounts payable to the sellers of businesses purchased by NSM that are contingent on the earnings of such businesses in periods subsequent to their acquisition. Under GAAP, contingent consideration liabilities are initially recorded at fair value as part of purchase accounting, with the periodic change in the fair value of these liabilities recorded as income or an expense.
Non-cash equity-based compensation expense - Represents non-cash expenses related to NSM’s management compensation emanating from the grants of equity units.
Impairments of intangible assets - Represents expense related to NSM’s write-off of intangible assets. For the periods presented, the impairments related primarily to NSM’s write-off of intangible assets in its U.K. vertical. The impairments related to lower premium volumes, including due to the impact of the COVID-19 pandemic, and certain reorganization initiatives in the U.K. vertical.
Loss on assets held for sale - Represents the loss on net assets held for sale related to the Fresh Insurance motor business.
Transaction expenses - Represents costs directly related to NSM’s mergers and acquisitions activity, such as transaction-related compensation, banking, accounting and external lawyer fees, which are not capitalized and are expensed under GAAP.
Fair value purchase accounting adjustment for deferred revenue - Represents the amount of deferred revenue that had already been collected but subsequently written down in connection with establishing the fair value of deferred revenue as part of NSM’s purchase accounting for Embrace.
Investments made in the development of new business lines - Represents the net loss related to the start-up of newly established lines of business, which NSM views as investments.
Restructuring expenses - Represents expenses associated with eliminating redundant work force and facilities that often arise as a result of NSM’s post-acquisition integration strategies. For the periods presented, this adjustment relates primarily to NSM’s expenses incurred in certain reorganization initiatives in the U.K. vertical.
Legal settlements - Represents amounts recognized from legal settlements.
White Mountains believes that these non-GAAP financial measures are useful to management and investors in evaluating NSM’s performance. See page 53 for the reconciliation of NSM’s GAAP net income (loss) to EBITDA and adjusted EBITDA.


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Kudu’s EBITDA and Kudu’s adjusted EBITDA
Kudu's EBITDA and adjusted EBITDA are non-GAAP financial measures. EBITDA is a non-GAAP financial measure that excludes interest expense on debt, income tax (expense) benefit, depreciation and amortization of other intangible assets from GAAP net income (loss). Adjusted EBITDA is a non-GAAP financial measure that excludes certain other items in GAAP net income (loss) in addition to those excluded from EBITDA. The adjustments relate to (i) net realized and unrealized investment gains (losses) on Kudu's Participation Contracts, (ii) non-cash equity-based compensation expense and (iii) transaction expenses. A description of each adjustment follows:
Net realized and unrealized investment gains (losses) - Represents net unrealized investment gains and losses on Kudu’s Participation Contracts, which are recorded at fair value under GAAP, and net realized investment gains and losses on Kudu’s Participation Contracts sold during the period.
Non-cash equity-based compensation expense - Represents non-cash expenses related to Kudu’s management compensation that are settled with equity units in Kudu.
Transaction expenses - Represents costs directly related to Kudu’s mergers and acquisitions activity, such as external lawyer, banker, consulting and placement agent fees, which are not capitalized and are expensed under GAAP.
White Mountains believes that these non-GAAP financial measures are useful to management and investors in evaluating Kudu’s performance. The reconciliation of Kudu’s GAAP net income (loss) to EBITDA and adjusted EBITDA is included on page 56.59.

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Total consolidated portfolio returnsreturn excluding MediaAlpha
Total consolidated portfolio return excluding MediaAlpha is a non-GAAP financial measure that removes the net investment income and net realized and unrealized investment gains (losses) from White Mountains’s investment in MediaAlpha. White Mountains believes this measure to be useful to management and investors by showing the underlying performance of White Mountains’s investment portfolio without regard to MediaAlpha.
The following tables presenttable presents return reconciliations from GAAP to the reported percentages:

For the Year Ended December 31, 2021For the Year Months Ended December 31, 2020
GAAP ReturnsRemove MediaAlphaReturns - Excluding MediaAlphaGAAP ReturnsRemove MediaAlphaReturns - Excluding MediaAlpha
Total consolidated portfolio
   returns
(3.4)%9.8 %6.4 %31.9 %(27.3)%4.6 %
Year Ended December 31,
20232022
Total consolidated portfolio return11.4 %(1.6)%
Remove MediaAlpha %1.9 %
Total consolidated portfolio return excluding
     MediaAlpha
11.4 %0.3 %

AdjustedTotal adjusted capital
Total capital at White Mountains is comprised of White Mountains’s common shareholders’ equity, debt and non-controllingnoncontrolling interests other than non-controllingnoncontrolling interests attributable to BAM. Total adjusted capital is a non-GAAP financial measure, which is derived by adjusting total capital (i) to include a discount for the time value of money arising from the expected timing of cash payments of principal and interest on the BAM Surplus Notes and (ii) to add back the unearned premium reserve, net of deferred acquisition costs, at HG Global. The reconciliation of total capital to total adjusted capital is included on page 67.70.

CRITICAL ACCOUNTING ESTIMATES

Management’s Discussion and Analysis of Financial Condition and Results of Operations discuss the Company’s consolidated financial statements, which have been prepared in accordance with GAAP. The financial statements presented herein include all adjustments considered necessary by management to fairly present the financial condition, results of operations and cash flows of White Mountains.
The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Certain of these estimates are considered critical in that they involve a higher degree of judgment and are subject to a significant degree of variability. On an ongoing basis, management evaluates its estimates and bases its estimates on historical experience and on various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources.

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1. Fair Value Measurements

General

White Mountains records certain assets and liabilities at fair value in its consolidated financial statements, with changes therein recognized in current period earnings. In addition, White Mountains discloses estimated fair value for certain liabilities measured at historical or amortized cost. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants (an exit price) at a particular measurement date. Fair value measurements are categorized into a hierarchy that distinguishes between inputs based on market data from independent sources (observable inputs) and a reporting entity’s internal assumptions based upon the best information available when external market data is limited or unavailable (unobservable inputs). Quoted prices in active markets for identical assets have the highest priority (“Level 1”), followed by observable inputs other than quoted prices including prices for similar but not identical assets or liabilities (“Level 2”), and unobservable inputs, including the reporting entity’s estimates of the assumptions that market participants would use, having the lowest priority (“Level 3”).
Assets and liabilities carried at fair value include substantially all of theWhite Mountains’s investment portfolio and derivative instruments, both exchange-traded and over the counter instruments. Valuation of assets and liabilities measured at fair value require management to make estimates and apply judgment to matters that may carry a significant degree of uncertainty. In determining its estimates of fair value, White Mountains uses a variety of valuation approaches and inputs. Whenever possible, White Mountains estimates fair value using valuation methods that maximize the use of quoted market prices or other observable inputs. Where appropriate, assets and liabilities measured at fair value have been adjusted for the effect of counterparty credit risk.
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Invested Assets

White Mountains uses outside pricing services and brokers to assist in determining fair values. The outside pricing services White Mountains uses have indicated that they will only provide prices where observable inputs are available. As of December 31, 2021, approximately 68% of the investment portfolio recorded at fair value was priced based upon quoted market prices or other observable inputs.

Level 1 Measurements
Investments valued using Level 1 inputs include White Mountains’s fixed maturity investments, primarily investments in U.S. Treasuries and short-term investments, which include U.S. Treasury Bills, common equity securities, and itsWhite Mountains’s investment in MediaAlpha following the MediaAlpha IPO.MediaAlpha. For investments in active markets, White Mountains uses the quoted market prices provided by outside pricing services to determine fair value.

Level 2 Measurements
Investments valued using Level 2 inputs include fixed maturity investments which have been disaggregated into classes, including debt securities issued by corporations, municipal obligations, mortgage and asset-backed securities and collateralized loan obligations. Investments valued using Level 2 inputs also include certain international listed common equity listed funds, traded on foreign exchanges, which White Mountains values using the fund manager’s published NAVnet asset value (“NAV”) to account for the difference in market exchange close times.
In circumstances where quoted market prices are unavailable or are not considered reasonable, White Mountains estimates the fair value using industry standard pricing methodologies and observable inputs such as benchmark yields, reported trades, broker-dealer quotes, issuer spreads, benchmark securities, bids, offers, credit ratings, prepayment speeds, reference data including research publications and other relevant inputs. Given that many fixed maturity investments do not trade on a daily basis, the outside pricing services evaluate a wide range of fixed maturity investments by regularly drawing parallels from recent trades and quotes of comparable securities with similar features. The characteristics used to identify comparable fixed maturity investments vary by asset type and take into account market convention.

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White Mountains’s process to assess the reasonableness of the market prices obtained from the outside pricing sources covers substantially all of its fixed maturity investments and includes, but is not limited to, the evaluation of pricing methodologies and a review of the pricing services’ quality control procedures on at least an annual basis, a comparison of its invested asset prices obtained from alternate independent pricing vendors on at least a semi-annual basis, monthly analytical reviews of certain prices and a review of the underlying assumptions utilized by the pricing services for select measurements on an ad hoc basis throughout the year. White Mountains also performs back-testing of selected investment sales activity to determine whether there are any significant differences between the market price used to value the security prior to sale and the actual sale price of the security on an ad hoc basis throughout the year. Prices provided by the pricing services that vary by more than $0.5 million and 5% from the expected price based on these assessment procedures are considered outliers, as are prices that have not changed from period to period and prices that have trended unusually compared to market conditions. In circumstances where the results of White Mountains’s review process does not appear to support the market price provided by the pricing services, White Mountains challenges the vendor provided price. If White Mountains cannot gain satisfactory evidence to support the challenged price, White Mountains will rely upon its own internal pricing methodologies to estimate the fair value of the security in question.
The valuation process described above is generally applicable to all of White Mountains’s fixed maturity investments. The techniques and inputs specific to asset classes within White Mountains’s fixed maturity investments for Level 2 securities that use observable inputs are as follows:

Debt Securities Issued by Corporations:
The fair value of debt securities issued by corporations is determined from a pricing evaluation technique that uses information from market sources and integrates relative credit information, observed market movements, and sector news. Key inputs include benchmark yields, reported trades, broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including sector, coupon, credit quality ratings, duration, credit enhancements, early redemption features and market research publications.

Municipal Obligations:
The fair value of municipal obligations is determined from a pricing evaluation technique that uses information from market makers, brokers-dealers, buy-side firms, and analysts along with general market information. Key inputs include benchmark yields, reported trades, issuer financial statements, material event notices and new issue data, as well as broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including type, coupon, credit quality ratings, duration, credit enhancements, geographic location and market research publications.


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Mortgage and Asset-Backed Securities and Collateralized Loan Obligations:
The fair value of mortgage and asset-backed securities and collateralized loan obligations is determined from a pricing evaluation technique that uses information from market sources and leveraging similar securities. Key inputs include benchmark yields, reported trades, underlying tranche cash flow data, collateral performance, plus new issue data, as well as broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including issuer, vintage, loan type, collateral attributes, prepayment speeds, default rates, recovery rates, cash flow stress testing, credit quality ratings and market research publications.


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Level 3 Measurements
Fair value estimates for investments that trade infrequently and have few or no quoted market prices or other observable inputs are classified as Level 3 measurements. Investments valued using Level 3 fair value estimates are based upon unobservable inputs and include investments in certain fixed maturity investments, common equity securities and other long-term investments where quoted market prices or other observable inputs are unavailable or are not considered reliable or reasonable.
Level 3 valuations are generated from techniques that use assumptions not observable in the market. These unobservable inputs reflect White Mountains’s assumptions of what market participants would use in valuing the investment. In certain circumstances, investment securities may start out as Level 3 when they are originally issued, but as observable inputs become available in the market, they may be reclassified to Level 2. Transfers of securities between levels are based on investments held as of the beginning of the period.

Other Long-Term Investments
As of December 31, 2021,2023, $1,138 million of White Mountains owned a portfolio ofMountains’s other long-term investments, valued at $1.4 billion, thatwhich consisted primarily of unconsolidated entities, including Kudu’s Participation Contracts a bank loan fund, private equity funds, a hedge fund, Lloyd’s trust deposits, ILS funds and private debt investments. As of December 31, 2021, $891 million of White Mountains’s other long-term investments consisting primarily of unconsolidated entities, including Kudu’s Participation Contracts and private debt investments,PassportCard/DavidShield, were classified as Level 3 investments in the GAAP fair value hierarchy, were not actively traded in public markets, and did not have readily observable market prices.hierarchy. The determination of the fair value of these securities involves significant management judgment, and the use of valuation modelsanalyses and assumptions that are inherently subjective and uncertain. See Item 1A. Risk Factors, “Our investment portfolio includes securities that do not have readily observable market prices. We use valuation methodologies that are inherently subjective and uncertain to value these securities. The values of securities established using these methodologies may never be realized, which could materially adversely affect our results of operations and financial condition.” on page 27.  As of December 31, 2021, $483 million of White Mountains’s other long-term investments, consisting of a bank loan fund, private equity funds, a hedge fund, Lloyd’s trust deposits, and ILS funds, were valued at fair value using NAV as a practical expedient. Investments for which fair value is measured at NAV using the practical expedient are not classified within the fair value hierarchy.34.
White Mountains may use a variety of valuation techniques to determine fair value depending on the nature of the investment, including a discounted cash flow analysis, market multiple approach, cost approach and/or liquidation analysis. On an ongoing basis, White Mountains also considers qualitative changes in facts and circumstances, which may impact the valuation of its unconsolidated entities, including economic and market changes in relevant industries, changes to the entity’s capital structure, business strategy and key personnel and any recent transactions relating to the unconsolidated entity.transactions. On a quarterly basis, White Mountains evaluates the most recent qualitative and quantitative information of the business and completes a fair valuation analysis for all other long-term investments classified as Level 3 other long-term investments. Periodically, and at least on an annual basis, White Mountains uses a third-party valuation firm to complete an independent valuation analysis of significant unconsolidated entities.
As of December 31, 2021,2023, White Mountains’s most significant other long-term investments that are fair valued using Level 3 measurements include Kudu’s Participation Contracts and its investment in PassportCard/DavidShield.


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Valuation of Kudu’s Participation Contracts
Kudu’s Participation Contracts comprise non-controllingnoncontrolling equity interests in the form of revenue and earnings participation contracts. As of December 31, 2021,2023, the combined fair value of Kudu’s Participation Contracts was $670$891 million. On a quarterly basis, White Mountains fair values each of Kudu’s Participation Contracts, typically using a discounted cash flow models.analysis. As of December 31, 2021,2023, one of Kudu’s Participation Contracts, with a total fair value of $79$69 million, was valued using a probability weighted expected return method, which was based ontakes into account factors such as a discounted cash flow analysis, and the expected value to be received in a pending sale transaction.sales transaction and the likelihood that a sales transaction will take place.
The discounted cash flow modelsanalyses used to fair value Kudu’s Participation Contracts include key inputs, such as projections of future revenues and earnings of Kudu’s clients,underlying managers, a discount rate and a terminal cash flow exit multiple. The expected future cash flows are based on management judgment, considering current performance, budgets and projected future results. The discount rates reflect the weighted average cost of capital, considering comparable public company data and adjusted for risks specific to the business and industry. The terminal cash flow exit multiple is generally based on expectations of annual cash flow to Kudu from each of its clientsunderlying managers in the terminal year of the discounted cash flow model.analysis. In determining fair value, White Mountains considers factors for each underlying manager, such as performance of underlying products and vehicles, expected client growth rates, new fund launches, fee rates by products, capacity constraints, operating cash flow of underlying managerflows and other qualitative factors, including the assessment of key personnel. The inputs to each discounted cash flow analysis vary depending on the nature of each client.underlying manager. As of December 31, 2021,2023, White Mountains concluded that pre-tax discount rates in the range of 18% to 23%,25% and terminal cash flow exit multiples in the range of 7 to 1322 times were appropriate inputs for the valuations ofdiscounted cash flow analyses used to fair value Kudu’s Participation Contracts.
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With a discounted cash flow analysis, small changes to key inputs in a valuation model may result in significant changes to fair value. The following table presents the estimated effect on the fair value of Kudu’s Participation Contracts as of December 31, 2021,2023, resulting from increases and decreaseschanges in key inputs to the discounted cash flow analysis, including discount rates and terminal cash flow exit multiples used in the discounted cash flow analysis:multiples:
Millions
Millions
MillionsMillions
Discount Rate(1)
Discount Rate(1)
Terminal Exit MultipleTerminal Exit Multiple-2%-1%18% - 23%+1%+2%
+2+2$782 $741 $705 $670 $638 
+2
+2
+1+1$758 $720 $685 $652 $621 
7x to 13x$739 $703 $670 $638 $609 
+1
+1
7x to 22x
7x to 22x
7x to 22x
-1
-1
-1-1$712 $677 $646 $616 $588 
-2-2$689 $657 $628 $600 $574 
-2
-2
(1) Since Kudu’s Participation Contracts are not subject to corporate taxes within Kudu Investment Management, LLC, pre-tax discount rates are applied to pre-tax cash flows in determining fair values.

Valuation of PassportCard/DavidShield
On a quarterly basis, White Mountains values its investment in PassportCard/DavidShield using a discounted cash flow model.analysis. The discounted cash flow valuation modelanalysis used to fair value PassportCard/DavidShield includes key inputs, such as projections of future revenues and earnings, a discount rate and a terminal revenue growth rate. The expected future cash flows are based on management judgment, considering current performance, budgets and projected future results. The discount rate reflects the weighted average cost of capital, considering comparable public company data and adjusted for risks specific to the business and industry. The terminal revenue growth rate is based on company, industry and macroeconomic expectations of perpetual revenue growth subsequent to the end of the discrete period in the discounted cash flow analysis.
When making its fair value selection, which is within a range of reasonable values derived from the discounted cash flow model,analysis, White Mountains considers all available information, including any relevant market multiples and multiples implied by recent transactions, facts and circumstances specific to PassportCard/DavidShield’s businesses and industries and any infrequent or unusual results for the period.
As of December 31, 2023, White Mountains concluded that an after-tax discount rate of 23%24% and a terminal revenue growth rate of 4% waswere appropriate for the valuation of its investment in PassportCard/DavidShield as of December 31, 2021.DavidShield. Utilizing these assumptions and all available information, White Mountains determined that the fair value of its investment in PassportCard/DavidShield was $120$150 million as of December 31, 2021.2023.
Premiums and commission revenuesRevenues from leisure travel insurance placed by PassportCard grew through the first nine months of 2023 but declined dramaticallysignificantly in the year ended December 31, 2020fourth quarter due to the COVID-19 pandemic. This decline was modestly offset by increased premiumsevents of October 7, 2023 and commission revenuesthe resulting war in Gaza. PassportCard expects leisure travel in Israel to remain depressed until the war abates and international carriers resume flights in and out of Tel Aviv. Revenues from international private medical insurance placed by DavidShield. During the third quarter of 2020, PassportCard/DavidShield curtailed its global expansion efforts in response to the impact of the COVID-19 pandemic.
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Sustained progress with COVID-19 vaccinations in Israel and abroad led to the Israeli airport reopening in March 2021. The reopening resulted in steadily improving leisure travel and the placement of leisure travel insurance by PassportCard. PassportCard’s premiums and commission revenues continued to recover significantly. In the fourth quarter of 2021, PassportCard’s written premium exceeded pre-pandemic premium levels. Premiums and commission revenues from international private medical insurance(“IPMI”) placed by DavidShield continuedwere less impacted and grew slightly year over year. Revenues from international operations, including European IPMI and Australian leisure travel, also grew year over year. White Mountains does not expect the war to grow in 2021.have a material impact on White Mountains’s results of operations or financial condition.
With a discounted cash flow analysis, small changes to key inputs in a valuation model may result in significant changes to fair value. The following table presents the estimated effect on the fair value of White Mountains’s investment in PassportCard/DavidShield as of December 31, 2021,2023, resulting from changes in key inputs to the discounted cash flow analysis, including the discount rate and terminal revenue growth rate:
Millions
Millions
MillionsMillionsDiscount RateDiscount Rate
Terminal Revenue Growth RateTerminal Revenue Growth Rate21%22%23%24%25%
4.5%4.5%$142 $131 $122 $113 $106 
4.5%
4.5%
4.0%
4.0%
4.0%4.0%$139 $129 $120 $111 $104 
3.5%3.5%$136 $126 $117 $110 $102 
3.5%
3.5%

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Other Long-term Investments - NAV
As of December 31, 2023, $834 million of White Mountains’s portfolio of other long-term investments, includes investments inwhich consisted of a private equity funds and hedge funds, a bank loan fund, private equity funds, hedge funds, Lloyd’s trust deposits and ILS funds, which arewere valued at fair value using NAV as a practical expedient. Investments for which fair value is measured using NAV as a practical expedient are not classified within the fair value hierarchy.
White Mountains employs a number of procedures to assess the reasonableness of the fair value measurements for other long-term investments measured at NAV, including obtaining and reviewing periodicinterim unaudited and annual audited annual financial statements as well as periodically discussing the valuations and methodologies used to value the underlying investments of each fund’s pricingfund with the fund manager. managers.However, since the fund managers do not provide sufficient information to evaluate the pricing methods and inputs for each underlying investment, White Mountains considers the valuation inputs to be unobservable.The fair value of White Mountains’s other long-term investments measured at NAV are generally determined using the fund manager’s NAV.In the event that White Mountains believes the fair value of the fund differs from the NAV reported by the fund manager due to illiquidity or other factors, White Mountains will adjustmake an adjustment to the reported NAV to more appropriately represent the fair value of its other long-term investment.

Sensitivity Analysis on Other Long-term Investments - NAV
The underlying investments of White Mountains’s private equity funds and hedge funds typically consist of publicly-traded and private securities whose exit strategies often depend on equity market conditions.These investments are based on quoted market prices or fund managers’ estimates of fair value, which could cause the amount realized upon sale to differ from current reported fair values.The fluctuations in fair value may result from a variety of risks, such as changes in the economic characteristics, the relative price of alternative investments, supply and demand and other equity market factors.
The underlying investments of White Mountains’s bank loan fund consist primarily of U.S. dollar-denominated, non-investment grade, floating-rate senior secured loans and may consist of other financial instruments, such as secured and unsecured corporate debt, credit default swaps, reverse repurchase agreements and synthetic indices. These investments are subject to credit spread risk and interest rate risk and may be affected by the creditworthiness of the issuer, prepayment options, relative values of alternative investments, the liquidity of the instrument and various other market factors.
The underlying investments of White Mountains’s private equity funds typically consist of private securities whose exit strategies often depend on equity market conditions. These investments are based on quoted market prices or management’s estimates of fair value, which could cause the amount realized upon sale to differ from current reported fair values. The fluctuations in fair value may result from a variety of risks, such as changes in the economic characteristics, the relative price of alternative investments, supply and demand, and other equity market factors.
The underlying investments of White Mountains’s multi-investor ILS funds consist primarily of catastrophe bonds, collateralized reinsurance investments and industry loss warranties.In addition to catastrophe event risk, the underlying investments are also subject to a variety of other risks, including modeling, liquidity, market, collateral credit quality, counterparty financial strength, interest rate and currency risks.
See Note 3 — “Investment Securities” on page F-21F-20 for tables that summarize the changes in White Mountains’s fair value measurements by level as of December 31, 2023 and 2022, and, for investments held at the end of the period, the total net unrealized gains (losses) attributable to Level 3 investments for the years ended December 31, 20212023, 2022 and 2020 and for amount of total gains (losses) included in earnings attributable to net unrealized investment gains (losses) for Level 3 investments for years ended December 31, 2021, 2020 and 2019.2021.

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2. Surplus Note Valuation

BAM Surplus Notes

As of December 31, 2021,2023, White Mountains owned $365$322 million of BAM Surplus Notes and hashad accrued $158$175 million in interest due thereon. In December 2021, BAM made a $34 million cash paymentpayments of principal and interest on the BAM Surplus Notes held by HG Global. In December 2020, BAM made a $30of $27 million, cash payment of principal$36 million and interest on the BAM Surplus Notes held by HG Global. In January 2020, BAM made a one-time $65$34 million cash payment of principalin 2023, 2022 and interest on the BAM Surplus Notes held by HG Global. During 2019, BAM made a $32 million cash payment (which included a one-time $10 million cash payment) of principal and interest on the BAM Surplus Notes.2021, respectively.
Because BAM is consolidated in White Mountains’s financial statements, the BAM Surplus Notes and accrued interest are classified as intercompany notes, carried at face value and eliminated in consolidation. However, the BAM Surplus Notes and accrued interest are carried as assets at HG Global, of which White Mountains owns 96.9% of the preferred equity and 88.4% of the common equity, while the BAM Surplus Notes are carried as liabilities at BAM, which White Mountains has no ownership interest in and is completely attributed to non-controllingnoncontrolling interests.
Any write-down of the carried amountcarrying value of the BAM Surplus Notes and/or the accrued interest thereon could adversely impact White Mountains’s results of operations and financial condition. See Item 1A., Risk Factors, “If BAM does not pay some or all of the principal and interest due on the BAM Surplus Notes, it could materially adversely affect our results of operations and financial condition.” on page 28.28.   
Periodically, White Mountains’s management reviews the recoverability of amounts recorded from the BAM Surplus Notes. As of December 31, 2021,2023, White Mountains believes such notes and interest thereon to be fully recoverable. White Mountains’s review is based on a debt service model that forecasts operating results for BAM and related payments on the BAM Surplus Notes through maturity of the BAM Surplus Notes in 2042. The model depends on assumptions regarding future trends for the issuance of municipal bonds, interest rates, credit spreads, insured market penetration, competitive activity in the market for municipal bond insurance and other factors affecting the demand for and pricepricing of BAM’s municipal bond insurance.
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As of December 31, 2021,2023, White Mountains debt service model indicated that the BAM Surplus Notes would be fully repaid between six and sevenapproximately five years prior to final maturity, which is generally consistent with the results of the update of the debt service model as of December 31, 2020.2022. The debt service model assumes both par insured and total pricing gradually increase from 20222024 to 2025,2026 and flatten thereafter. Assumptions regarding future trends for these factors are a matter of significant judgment, and whether actual results will follow the model is subject to a number of risks and uncertainties.
In January 2020, White Mountains updatedUnder its debt service model to reflect (i) the cash payments of principal and interest on the BAM Surplus Notes made in December 2019 and January 2020, (ii) the amendments made to the terms of the BAM Surplus Notes in January 2020, including an extension of the variable interest rate period, and (iii) in light of the current interest rate environment, a more conservative forecast of future operating results for BAM. The changes to the debt service model resulted in a $20 million increase to the time value of money discount on the BAM Surplus Notes as reflected in adjusted book value per share as of December 31, 2019.
agreements with HG Global, BAM is required to seek regulatory approval to pay interestprincipal and principalinterest on the BAM Surplus Notes only to the extent that its remaining qualified statutory capital and other capital resources continue to support its outstanding obligations, its business plan and its “AA/stable” rating from Standard & Poor’s. No payment of principal or interest on the BAM Surplus Notes may be made without the approval of the NYDFS.
Interest payments on the BAM Surplus Notes are due quarterly but are subject to deferral, without penalty or default and without compounding, for payment in the future. Payments made toon the BAM Surplus Notes are applied pro rata between outstanding principal and interest. Deferred interest is due on the stated maturity date in 2042.

3. Ark’s Loss and LAE Reserves

General
Ark establishes loss and LAE reserves that are estimates of amounts needed to pay claims and related expenses in the future for insured events that have already occurred. The process of estimating loss and LAE reserves involves a considerable degree of judgment by management and, as of any given date, is inherently uncertain. See Note 5 — “Losses“Loss and Loss Adjustment Expense Reserves” on page F-35F-33 for a description of Ark’s loss and LAE reserves and actuarial methods.
Ark performs an actuarial review of its recorded loss and LAE reserves each quarter, using several generally accepted actuarial methods to evaluate its loss reserves, each of which has its own strengths and weaknesses. Management places more or lessbases its level of reliance on a particular method based on the facts and circumstances at the time the reserve estimates are made.
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As part of Ark’s quarterly actuarial review, Ark compares the previous quarter’s projections of incurred, paid and case reserve activity, including amounts incurred but not reported, to actual amounts experienced in the quarter. Differences between previous estimates and actual experience are evaluated to determine whether a given actuarial method for estimating loss and LAE reserves should be relied upon to a greater or lesser extent than it had been in the past. While some variance is expected each quarter due to the inherent uncertainty in estimating loss and LAE reserves, persistent or large variances would indicate that prior assumptions and/or reliance on certain actuarial methods may need to be revised going forward.
Upon completion of each quarterly review, Ark selects indicated loss and LAE reserve levels based on the results of the relevant actuarial methods, which are the primary consideration in determining management’s best estimate of required loss and LAE reserves. However, in making its best estimate, management also considers other qualitative factors that may lead to a difference between held reserves and actuarially indicated reserve levels. Typically, these qualitative factors are considered when management and Ark’s actuaries conclude that there is insufficient historical incurred and paid loss information or that there is particular uncertainty about whether trends included in the historical incurred and paid loss information are likely to repeat in the future. Such qualitative factors include, among others, recent entry into new markets or new products, improvements in the claims department that are expected to lessen future ultimate loss costs, legal and regulatory developments, inflation, climate change or other uncertainties that may arise.
The process of establishing loss and LAE reserves, including amounts incurred but not reported, is complex and imprecise, as it must consider many variables that are subject to the outcome of future events. As a result, informed subjective estimates and judgments as to Ark’s ultimate exposure to losses are an integral component of the loss and LAE reserving process. Ark categorizes and tracks insurance and reinsurance reserves by “reserving class of business” for each underwriting office, London and Bermuda, and then aggregates the reserving classes by line of business, which are summarized herein as property and accident & health, specialty, marine & energy, specialty, casualty - activecasualty-active and casualty - runoff.casualty-runoff.
Ark regularly reviews the appropriateness of its loss and LAE reserves at the reserving class of business level, considering a variety of trends that impact the ultimate settlement of claims for the subsets of claims in each particular reserving class. Losses and LAE are categorized by the year in which the policy is underwritten (the year of account, or underwriting year) for purposes of Ark’s claims management and estimation of the ultimate loss and LAE reserves.For purposes of Ark’s reporting under GAAP, losses and LAE are categorized by the accident year.

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Impact of Third-Party Capital
For the years of account prior to the Ark Transaction, a significant proportion of the Syndicates’ underwriting capital was provided by TPC Providers using whole account reinsurance contracts with Ark’s corporate member. The TPC Providers’ participation in the Syndicates for the 2020 and 2019 open years of account is 42.8% and 58.3% of the total net result of the Syndicates. For the years of account subsequent to the Ark Transaction, Ark is no longer using TPC Providers to provide underwriting capital for the Syndicates.
A Reinsurance to Close (“RITC”) agreement is generally put in place after the third year of operations for a year of account such that the outstanding loss and LAE reserves, including future development thereon, are reinsured into the next year of account. As a result, and in combination with the changing participation provided by TPC Providers, Ark’s participation on the outstanding loss and LAE reserves reinsured into the next year of account may change, perhaps significantly.changes. For example, during 2021,2023, an RITC was executed such that the outstanding loss and LAE reserves for claims arising out of the 20182020 year of account, for which the TPC Providers’ participation in the total net results of the Syndicates was 57.6%42.8%, were reinsured into the 20192021 year of account, for which the TPC Providers’ participation in the total net results of the Syndicates is 58.3%0.0%. After 2023, Ark is no longer subject to changes in TPC Providers’ participation.

Loss and LAE Reserves by Line of Business
The following table summarizes Ark’s loss and LAE reserves, net of reinsurance recoverables on unpaid losses, as of December 31, 2021:2023:

December 31, 2021
MillionsCaseIBNRTotal
Property and Accident & Health$81.1 $93.9 $175.0 
Marine & Energy23.4 75.9 99.3 
Specialty13.4 71.8 85.2 
Casualty – Active11.9 25.5 37.4 
Casualty – Runoff42.4 26.0 68.4 
Other.2 ..3 .5 
Total loss and LAE reserves, net of reinsurance recoverables (1)
$172.4 $293.4 $465.8 
(1) The loss and LAE reserves, net of reinsurance, are net of amounts attributable to TPC Providers of $276.8, including $141.5 of case reserves and $135.3 of IBNR reserves.
December 31, 2023
MillionsCaseIBNRTotal
Property and Accident & Health$150.2 $208.5 $358.7 
Specialty72.9 266.8 339.7 
Marine & Energy114.4 217.3 331.7 
Casualty – Active21.1 116.0 137.1 
Casualty – Runoff43.5 37.8 81.3 
Other.1 .1 .2 
Total loss and LAE reserves, net of reinsurance recoverables$402.2 $846.5 $1,248.7 

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For loss and LAE reserves as of December 31, 2021,2023, Ark considers that the impact of the various reserving factors, as described in Note 5 — “Losses“Loss and Loss Adjustment Expense Reserves” on page F-35,F-33, on future paid losses would be similar to the impact of those factors on historical paid losses.
The major causes of material uncertainty (i.e., reserving factors) generally will vary for each line of business, as well as for each separately analyzed reserving class of business within the line of business. Also, reserving factors can have offsetting or compounding effects on estimated loss and LAE reserves. In most cases, it is not possible to discretely measure the effect of a single reserving factor and construct a meaningful sensitivity expectation. Actual results will likely vary from expectations for each of these assumptions, resulting in an ultimate claim liability that is different from that being estimated currently.
Additional causes of material uncertainty exist in most product lines and may impact the types of claims that could occur within a particular line of business or reserving class of business. Examples where reserving factors within a line of business or reserving class of business are subject to change include changing types of insuredinsureds (e.g., type of insured vehicle, size of account, industry insured, jurisdiction), changing underwriting standards or changing policy provisions (e.g., deductibles, policy limits, endorsements).

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Ark Loss and LAE Development

See Note 5 — “Losses“Loss and Loss Adjustment Expense Reserves” on page F-35F-33 for prior year loss and LAE development discussions for the year ended December 31, 2021.2023.

Range of Reserves
The following table shows the recorded loss and LAE reserves and the high and low ends of Ark’s range of reasonable loss and LAE reserve estimates, net of reinsurance recoverables on unpaid losses, as of December 31, 2021.2023. See Note 5 — “Losses“Loss and Loss Adjustment Expense Reserves” on page F-35F-33 for a description of Ark’s loss and LAE reserves and actuarial methods.

December 31, 2021
MillionsLowRecordedHigh
Total loss and LAE reserves, net of reinsurance recoverables (1)
$388.8$465.8$505.6
(1) The recorded loss and LAE reserves and the high and low ends of the range of loss and LAE reserve estimates, net of reinsurance recoverables on unpaid losses, are net of amounts attributable to TPC Providers of $276.8.
December 31, 2023
MillionsLowRecordedHigh
Total loss and LAE reserves, net of reinsurance recoverables$1,001.3$1,248.7$1,351.7

The recorded reserves represent management's best estimate of unpaid loss and LAE reserves. Management’s best estimate of reserves is in the upper portion of the actuarial range of estimates in response to potential volatility in the actuarial indications and estimates for large claims. Ark uses the results of several different generally acceptedstandard actuarial methods to develop its best estimate of ultimate loss and LAE reserves. While it has not determined the statistical probability of actual ultimate paid losses falling within the range, Ark believes that it is reasonably likely that actual ultimate paid losses will fall within the rangesrange noted above.
On an annual basis, Ark uses an independent external actuary to provide actuarial opinions on the reasonableness of loss and LAE reserves for its operating subsidiaries. Ark uses the independent actuarial review solely to corroborate Ark’s recorded loss and LAE reserves. The result of the independent actuarial review indicated that Ark’s net recorded loss and LAE reserves fall within the range noted above.
Although Ark believes its loss and LAE reserves are reasonably stated, ultimate losses may deviate, perhaps materially, from the recorded reserve amounts and could be above the high end of the range of actuarial projections. This is because ranges are developed based on known events as of the valuation date, whereas the ultimate disposition of losses is subject to the outcome of events and circumstances that may be unknown as of the valuation date.


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Sensitivity Analysis
Below is a discussion of possible variations from current estimates of loss and LAE reserves due to changes in certain key assumptions. Each of the impacts described below is estimated individually, without consideration for any correlation among key assumptions. Further, there is uncertainty around other assumptions not explicitly quantified in the discussion below. Therefore, it would be inappropriate to take each of the amounts described below and add them together in an attempt to estimate volatility for Ark’s reserves in total. It is important to note that the volatilities and variations discussed below are not meant to be worst-case scenarios or an all-inclusive list, and therefore it is possible that future volatilities and variations may be more than amounts discussed below.

Sustained elevated levels of inflation: Elevated levels of inflation have been observed during 2021,2022 and 2023, and recent economic forecasts suggest this trend will continue at least in the short term. This has been particularly observed in the casualty lines of business with key social inflation drivers being court awards, changes in technology and the legal environment. For example, a hypothetical increase in inflation rates by 4% per annum would increase the recorded loss and LAE reserves, net of reinsurance recoverables on unpaid losses, for the casualty lines of business by approximately $7$10 million, or approximately 7%5% of the recorded casualty loss and LAE reserves of $106$218 million. The property line of business has also been impacted by elevated levels of inflation in relation to many elements of construction costs. While the impact on construction costs could be viewed as a short-term measure, there is uncertainty over how long it will take for the current elevated level of costs to reduce back to historic norms given COVID-19 disruption and worldwide supply chain issues.

Catastrophe losses: The years 2017 through 20212023 have been active for major loss events, including natural catastrophes. As time has passed, the emerging claims information for major loss events has been better than expected. As of December 31, 2021,2023, Ark has recorded $64$75 million of loss and LAE reserves, net of reinsurance recoverables on unpaid losses, for major loss events, of which $26$48 million is held as IBNR reserves. Some, but perhaps not all, of the IBNR reserves may be needed to handle adverse reporting from clients.

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Ark new business: In January 2021, in response to an improved underwriting environment, Ark converted GAIL into a Class 4 Bermuda-based insurance and reinsurance company and began to underwrite third-party business. GAIL now underwrites a range of third-party business including property, specialty, marine & energy specialty and casualty lines from Bermuda. GAIL’s initial expected loss ratios selected for reserving purposes were based on market benchmarks, supplemented based on discussions with underwriters, policy details, views at time of pricing the risk and emerging experience duringsince 2021. As actual losses develop, Ark will revise its initial expectations with its actual experience. However, it could be a few years before Ark has sufficient internal data to rely on and possibly longer for the longer-tailedlonger-tail lines of business, such as casualty. In 2021,2023, GAIL reported gross written premiums of $363$871 million. A 10% error in Ark’s initial loss ratio estimates could result in approximately $36$87 million of adverse variance in loss and LAE reserves.

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Loss and LAE Reserve Summary
The following table summarizes the loss and LAE reserve activity of Ark’s insurance and reinsurance subsidiaries for the year ended December 31, 2021:2023:

Millions
Year Ended
December 31, 20212023
Gross beginning balance$696.01,296.5 
Less: beginning reinsurance recoverable on unpaid losses (1)
(433.4)(505.0)
Net loss and LAE reserves262.6791.5 
Losses and LAE incurred relating to:
Current year losses gross of amounts attributable to TPC Providers(2)
691.3 397.5
   Less: Current year losses attributable to TPC Providers(61.2)
      Net current year losses336.3
   Prior year losses gross of amounts attributable to TPC Providers(42.9)19.9 
   Less: Prior year losses attributable to TPC Providers21.4
      Net prior year losses(21.5)
Net incurred losses and LAE(2)
711.2 314.8
Loss and LAE paid relating to:
Current year losses gross of amounts attributable to TPC Providers(56.2)(51.3)
Less: Current year losses attributable to TPC Providers12.3
Net current year losses(43.9)
Prior year losses gross of amounts attributable to TPC Providers(132.0)(356.6)
Less: Prior year losses attributable to TPC Providers70.4
   Net prior year losses(61.6)
Net paid losses and LAE(105.5)(407.9)
Change in TPC Providers’ participation (2)(3)
(2.2)145.4 
Foreign currency translation and other adjustments to loss and LAE reserves(3.9)8.5 
Net ending balance465.81,248.7 
Plus: ending reinsurance recoverable on unpaid losses (1)(2)
428.9356.4 
Gross ending balance$894.71,605.1 
(1) The beginning reinsurance recoverable on unpaid losses and ending reinsurance recoverable on unpaid losses includes amounts attributable to TPC Providers of $319.2 and $276.8.$145.4.
(2) Amount includes $15.6 ceded by Ark to WM Outrigger Re, which eliminates in White Mountains’s consolidated financial statements.
(3) Amount represents a decrease inthe impact to net loss and LAE reserves due to a change in the TPC Providers’ participation during 2021, related to the annual RITC for the 2018 year of account.process.

During the year ended December 31, 2021,2023, Ark experienced $22$20 million of net favorableunfavorable prior year loss reserve development. Ark’sThe net favorableunfavorable prior year loss reserve development was driven primarily by the property and accident & health ($942 million), casualty – ongoing ($4 million), reserving line of business, partially offset by net favorable prior year loss reserve development within the specialty ($312 million) and casualty – casualty–runoff ($36 million) reserving lines of business. The favorablenet unfavorable prior year loss reserve development in the property and accident & health reserving line of business was driven primarily by Hurricane Ian, Winter Storm Elliott and a power outage claim. The net favorable prior year loss reserve development in the specialty and casualty-runoff reserving lines of business was driven primarily by positive claims experience within the 20182021 and 20192020 accident years.


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The following table summarizes the unpaid loss and LAE reserves, net of reinsurance recoverables on unpaid losses, for each of Ark’s major reserving lines of business as of December 31, 2021:2023:



Millions
As of
December 31, 20212023
Property and Accident & Health$175.0358.7 
Specialty339.7 
Marine & Energy99.3331.7 
SpecialtyCasualty-Active85.2137.1 
Casualty - ActiveCasualty-Runoff37.481.3 
Casualty - Runoff68.4 
Other.2 0.5
   Unpaid loss and LAE reserves, net of reinsurance recoverables on unpaid losses465.81,248.7 
Plus: Reinsurance recoverables on unpaid losses(1)
Property and Accident & Health145.2142.5 
Specialty77.6 
Marine & Energy70.259.1 
SpecialtyCasualty-Active68.974.8 
Casualty - ActiveCasualty-Runoff41.42.4 
Casualty - Runoff103.2 
   Total Reinsurance recoverables on unpaid losses(1)
428.9 356.4 
Total unpaid loss and LAE reserves$894.71,605.1 
(1) The reinsurance recoverables on unpaid losses include amounts attributable to TPC Providers of $276.8.

The following ten tables include two tables each for theArk’s property and accident & health, specialty, marine & energy, specialty, casualty-active and casualty-runoff reserving lines of business. The first table for each reserving line of business is presented net of reinsurance, which includes the impact of whole-account quota-share reinsurance arrangements related to TPC Providers. Through the annual RITC process and in combination with the changing participation provided by TPC Providers, Ark’s participation on outstanding loss and LAE reserves on prior years of account can fluctuate. Depending on the change in the TPC Providers’ participation from one year of account to the next, the impact could be significant and is reflected in the tables on ana retrospective basis by accident year. That is, for the RITC executed in the current year basis.that changes Ark’s participation for claims relating to prior accident years, the prior year columns are adjusted to include the impact of the RITC. After 2023, Ark is no longer subject to changes in TPC Providers’ participation. The second table for each reserving line of business excludes the impact of amounts attributable to TPC Providers. White Mountains believes this information is useful to management and investors in evaluating Ark’s loss and LAE reserves on a fully aligned basis (i.e., 100% of the Syndicates’ results), by excluding the impact of changing levels of TPC Providers’ participation from one year of account to the next.
The following table summarizes the participation of Ark’s TPC Providers by year of account:

2012201320142015201620172018201920202021
TPC Providers’
   Participation
— %— %66.2 %70.0 %59.6 %60.0 %57.6 %58.3 %42.8 %— %
2014201520162017201820192020202120222023
TPC Providers’
   Participation
66.2 %70.0 %59.6 %60.0 %57.6 %58.3 %42.8 %— %— % %

Each of the ten tables includes three sections.
The top section of the table presents, for each of the previous 10 accident years, (1) cumulative total undiscounted incurred loss and LAE as of each of the previous 10 year-end evaluations, (2) total IBNR plus expected development on reported claims as of December 31, 2021,2023 and (3) the cumulative number of reported claims as of December 31, 2021.2023.
The middle section of the table presents cumulative paid loss and LAE for each of the previous 10 accident years as of each of the previous 10 year-end evaluations. Also included in this section is a calculation of the loss and LAE reserves as of December 31, 20212023, which is then included in the reconciliation to the consolidated balance sheet presented above. The total unpaid loss and LAE reserves as of December 31, 20212023 is calculated as the cumulative incurred loss and LAE from the top section less the cumulative paid loss and LAE from the middle section, plus any outstanding liabilities from accident years prior to 2012.2013.

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The bottom section of the table is supplementary information about the average historical claims duration as of December 31, 2021.2023. It shows the weighted average annual percentage payout of incurred loss and LAE by accident year as of each age. For example, the first column is calculated as the incremental paid loss and LAE in the first calendar year for each given accident year (e.g., calendar year 20202023 for accident year 2020,2023, calendar year 20212022 for accident year 2021)2022) divided by the cumulative incurred loss and LAE as of December 31, 20212023 for that accident year. The resulting ratios are weighted together using cumulative incurred loss and LAE as of December 31, 2021.2023.

Property and Accident & Health
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2023
Accident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
2014$32.8 $29.5 $29.4 $28.7 $28.5 $28.6 $28.6 $28.6 $28.6 $28.5 $.1 2,924
201519.3 18.3 17.3 16.3 16.1 16.2 15.9 15.8 16.1 .2 2,829
201622.5 17.7 18.5 18.6 18.6 18.8 18.8 18.7 .2 3,428
201731.3 38.1 45.6 44.6 43.2 42.7 44.2 15.3 4,613
201841.0 47.4 49.3 47.0 47.1 46.7 1.9 4,269
201934.2 31.4 27.2 24.0 23.4 .8 4,011
202077.6 75.8 75.1 78.4 12.4 4,617
2021171.8 155.5 167.3 5.7 3,465
2022244.3 270.5 14.3 3,899
2023214.2 156.9 2,963
Total$908.0 
Property and Accident & Health
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Accident Year2014201520162017201820192020202120222023
2014$13.7 $25.1 $27.3 $27.6 $27.7 $27.9 $28.0 $28.0 $28.0 $28.0 
20156.9 12.3 13.5 14.7 14.7 14.9 15.1 15.1 15.5 
20168.6 13.2 16.5 16.9 17.0 17.3 17.9 18.1 
201716.9 26.0 31.8 33.0 29.8 27.5 25.7 
201815.7 32.4 40.3 40.3 41.1 43.1 
20196.8 16.8 18.5 18.6 19.4 
202011.3 34.3 47.3 56.1 
202130.9 87.1 131.3 
202270.9 193.9 
202320.1 
Total551.2 
All outstanding liabilities before 2014, net of reinsurance1.9 
Loss and LAE reserves, net of reinsurance$358.7 
Property and Accident & Health
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Years12345678910
25.8%35.5%20.1%6.1%1.3%1.1%0.4%0.3%0.1%—%
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Property and Accident & HealthProperty and Accident & Health
$ in Millions$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2021
$ in Millions
$ in Millions
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,
For the Years Ended December 31,
For the Years Ended December 31,As of December 31, 2023
Accident YearAccident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claimsAccident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
2012$84.1 $68.4 $65.1 $65.7 $60.2 $60.0 $60.4 $60.2 $60.2 $60.0 $— 2,710
201374.6 66.9 66.6 62.1 61.6 61.7 61.6 61.6 61.6 .4 2,586
2014201434.8 31.3 29.4 28.6 28.6 28.5 28.5 28.5 — 2,9632014$54.9 $53.0 $52.6 $50.2 $49.8 $50.0 $50.0 $50.1 $50.1 $49.9 $$.1 2,9242,924
2015201519.8 17.4 16.2 16.0 15.9 15.9 15.9 .4 2,884201554.3 51.4 51.4 48.1 48.1 45.7 45.7 45.1 45.1 45.3 45.3 44.8 44.8 44.6 44.6 44.9 44.9 .2 .2 2,8292,829
2016201621.7 16.9 17.9 18.0 17.9 18.0 (.3)3,478201660.1 47.9 47.9 49.7 49.7 50.1 50.1 49.9 49.9 50.5 50.5 50.4 50.4 50.4 50.4 .2 .2 3,4283,428
2017201722.6 29.9 37.4 36.7 36.0 3.6 4,610201757.2 74.0 74.0 92.8 92.8 90.5 90.5 87.0 87.0 86.2 86.2 87.7 87.7 15.3 15.3 4,6134,613
2018201837.5 44.2 46.3 44.5 1.5 4,270201889.3 104.5 104.5 108.9 108.9 103.5 103.5 103.6 103.6 103.2 103.2 1.9 1.9 4,2694,269
2019201930.4 27.8 23.4 2.1 4,073201972.1 65.4 65.4 55.3 55.3 49.7 49.7 49.1 49.1 .8 .8 4,0114,011
2020202062.9 61.5 15.2 4,5322020123.9 120.5 120.5 119.2 119.2 122.5 122.5 12.4 12.4 4,6174,617
20212021162.1 70.8 2,8602021193.3 172.0 172.0 183.9 183.9 5.7 5.7 3,4653,465
Total$511.5 
20222022244.7 271.0 14.3 3,899
20232023214.2 156.9 2,963
Total
Property and Accident & HealthProperty and Accident & Health
MillionsMillions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Millions
Millions
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,For the Years Ended December 31,
Accident YearAccident Year2012201320142015201620172018201920202021Accident Year2014201520162017201820192020202120222023
2012$14.2 $45.0 $53.6 $57.3 $58.2 $58.6 $58.7 $59.3 $59.4 $59.5 
201315.8 40.3 60.0 61.1 61.1 61.3 61.3 61.3 61.2 
2014201413.9 25.4 27.6 28.0 28.1 28.2 28.4 28.3 
201520157.0 12.4 13.7 14.9 14.8 15.1 15.3 
201620168.6 13.4 16.8 17.1 17.2 17.5 
2017201717.0 26.3 32.1 33.3 30.2 
2018201815.8 32.8 40.7 40.7 
201920196.9 17.1 19.1 
2020202011.4 34.5 
2021202130.8 
Total337.1 
All outstanding liabilities before 2012, net of reinsurance.6 
Loss and LAE reserves, net of reinsurance$175.0 
2022
2023
Total
All outstanding liabilities before 2014, gross of amounts attributable to TPC Providers
Loss and LAE reserves, gross of amounts attributable to TPC Providers

Property and Accident & Health
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Years12345678910
31.5%33.4%19.2%5.7%1.2%1.4%0.8%0.3%—%0.1%

Property and Accident & Health
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
Years12345678910
28.3%36.4%18.9%5.1%0.7%1.1%1.4%0.5%—%0.1%
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Property and Accident & Health
Specialty
$ in Millions$ in Millions
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,As of December 31, 2021
$ in Millions
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
Incurred Loss and LAE, Net of Reinsurance
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
For the Years Ended December 31,
For the Years Ended December 31,As of December 31, 2023
Accident YearAccident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claimsAccident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
2012$84.1 $68.4 $65.1 $65.7 $65.9 $66.0 $65.7 $65.5 $65.2 $64.8 $— 2,710
201374.6 66.9 66.6 66.3 65.0 64.8 64.5 64.5 64.5 .9 2,586
2014201455.6 53.4 53.3 51.2 50.8 50.6 50.6 50.6 .1 2,9632014$46.0 $44.2 $41.2 $40.8 $41.2 $43.8 $43.8 $43.7 $43.5 $43.5 $$— 1,3591,359
2015201554.7 51.8 48.7 46.2 46.0 45.8 45.8 .9 2,884201517.4 14.8 14.8 12.4 12.4 10.8 10.8 11.1 11.1 11.3 11.3 11.3 11.3 9.0 9.0 8.2 8.2 (.1)(.1)1,8411,841
2016201660.6 48.5 50.0 50.3 50.0 50.1 (.7)3,478201618.4 14.4 14.4 11.0 11.0 11.3 11.3 11.9 11.9 11.9 11.9 9.0 9.0 8.6 8.6 .1 .1 1,9321,932
2017201757.6 75.1 93.8 91.4 89.8 8.6 4,610201718.1 13.0 13.0 12.1 12.1 11.6 11.6 11.7 11.7 10.7 10.7 10.4 10.4 .1 .1 2,1912,191
2018201889.8 105.7 110.4 106.4 3.5 4,270201814.6 16.4 16.4 16.8 16.8 16.1 16.1 14.9 14.9 15.8 15.8 .4 .4 2,1172,117
2019201972.5 66.2 55.8 5.5 4,073201921.8 19.6 19.6 18.7 18.7 25.7 25.7 30.1 30.1 .2 .2 2,3682,368
20202020125.1 122.1 29.1 4,532202024.2 23.2 23.2 19.0 19.0 19.9 19.9 1.7 1.7 1,9941,994
20212021191.2 83.1 2,860202171.2 62.6 62.6 51.7 51.7 16.4 16.4 1,6961,696
Total$841.1 
20222022181.1 176.6 97.2 1,407
20232023215.6 151.6 1,258
Total
Property and Accident & Health
Specialty
MillionsMillions
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,
Millions
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
Cumulative Paid Loss and LAE, Net of Reinsurance
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,For the Years Ended December 31,
Accident YearAccident Year2012201320142015201620172018201920202021Accident Year2014201520162017201820192020202120222023
2012$14.2 $45.0 $53.6 $57.3 $60.1 $61.4 $61.7 $63.2 $63.3 $63.5 
201315.8 40.3 60.0 63.3 63.2 63.9 63.7 63.7 63.6 
2014201419.1 41.3 48.0 49.2 49.4 49.9 50.2 50.1 
2015201519.0 36.3 40.4 43.3 43.2 43.8 44.3 
2016201624.7 38.9 47.3 48.2 48.4 49.1 
2017201743.1 66.2 80.6 83.5 75.9 
2018201838.0 78.5 97.1 97.1 
2019201916.5 40.7 45.3 
2020202024.5 69.2 
2021202139.0 
Total597.1 
All outstanding liabilities before 2012, gross of amounts attributable to TPC Providers1.5 
Loss and LAE reserves, gross of amounts attributable to TPC Providers$245.5 
2022
2023
Total
All outstanding liabilities before 2014, net of reinsurance
Loss and LAE reserves, net of reinsurance
Property and Accident & Health
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
Years12345678910
32.0%33.6%17.5%5.0%0.5%1.8%1.9%0.5%(0.1)%0.1%

Specialty
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Years12345678910
20.5%30.6%9.7%6.0%7.7%6.0%1.2%1.7%(3.1)%(0.5)%
86


Marine & Energy
Specialty
$ in Millions$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2021
$ in Millions
$ in Millions
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,
For the Years Ended December 31,
For the Years Ended December 31,As of December 31, 2023
Accident YearAccident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claimsAccident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
2012$64.7 $55.1 $46.0 $42.8 $33.6 $32.8 $32.6 $32.0 $32.0 $32.1 $.1 2,428 
201364.9 50.8 41.9 31.6 31.0 29.9 29.7 29.6 29.9 (.2)2,641 
2014201441.3 27.2 17.4 16.2 14.7 14.3 14.4 14.4 .5 2,581 2014$65.8 $63.7 $54.9 $53.5 $54.6 $60.9 $61.0 $60.7 $60.4 $60.5 $$— 1,3591,359
2015201525.3 15.4 13.6 12.7 12.0 12.0 12.2 .2 3,390 201546.9 39.3 39.3 31.5 31.5 27.5 27.5 28.2 28.2 28.7 28.7 28.6 28.6 24.6 24.6 23.8 23.8 (.1)(.1)1,8411,841
2016201622.3 18.1 16.0 15.1 14.9 15.1 .7 4,117 201651.6 39.0 39.0 30.7 30.7 31.5 31.5 32.9 32.9 32.8 32.8 27.7 27.7 27.3 27.3 .1 .1 1,9321,932
2017201723.9 18.6 16.9 16.4 16.5 1.1 4,470 201742.1 29.4 29.4 27.1 27.1 26.0 26.0 26.4 26.4 24.6 24.6 24.3 24.3 .1 .1 2,1912,191
2018201824.5 18.9 16.7 17.0 .5 3,487 201829.3 33.6 33.6 34.6 34.6 32.9 32.9 30.8 30.8 31.7 31.7 .4 .4 2,1172,117
2019201919.3 17.3 17.2 .6 2,562 201939.4 34.0 34.0 32.0 32.0 44.2 44.2 48.6 48.6 .2 .2 2,3682,368
2020202024.4 21.7 2.9 1,668 202043.2 42.0 42.0 34.7 34.7 35.6 35.6 1.7 1.7 1,9941,994
2021202183.7 69.9 1,091 202181.2 66.5 66.5 55.5 55.5 16.4 16.4 1,6961,696
Total$259.8 
20222022181.3 176.8 97.2 1,407
20232023215.6 151.6 1,258
Total
Marine & Energy
Specialty
MillionsMillions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Millions
Millions
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,For the Years Ended December 31,
Accident YearAccident Year2012201320142015201620172018201920202021Accident Year2014201520162017201820192020202120222023
2012$8.1 $24.0 $27.4 $30.2 $30.6 $31.3 $31.7 $31.4 $31.3 $31.0 
20137.9 22.6 28.1 29.1 29.7 29.9 29.9 29.7 29.9 
201420146.0 12.4 13.5 14.4 14.5 13.7 14.0 13.8 
201520154.0 8.0 9.8 11.3 10.7 10.8 11.2 
201620165.6 10.1 12.8 13.3 13.4 14.0 
201720175.2 11.3 13.1 14.4 14.4 
201820182.7 12.9 14.5 15.2 
201920193.4 10.9 12.9 
202020203.2 12.9 
202120216.4 
Total161.7 
All outstanding liabilities before 2012, net of reinsurance1.2 
Loss and LAE reserves, net of reinsurance$99.3 
2022
2023
Total
All outstanding liabilities before 2014, gross of amounts attributable to TPC Providers
Loss and LAE reserves, gross of amounts attributable to TPC Providers
Marine & Energy
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Specialty
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
YearsYears12345678910Years12345678910
19.8%37.7%20.2%5.7%4.3%7.2%0.4%0.1%(0.4)%0.2%
22.7%22.7%32.5%9.8%7.4%6.7%5.9%1.1%0.8%(3.8)%(1.2)%
87


Marine & EnergyMarine & Energy
$ in Millions$ in Millions
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,As of December 31, 2021
$ in Millions
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
Incurred Loss and LAE, Net of Reinsurance
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
For the Years Ended December 31,
For the Years Ended December 31,As of December 31, 2023
Accident YearAccident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claimsAccident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
2012$64.7 $55.1 $46.0 $42.8 $40.4 $38.8 $37.0 $35.6 $35.4 $35.6 $.3 2,428 
201364.9 50.8 41.9 38.4 37.2 33.5 33.0 32.8 33.4 (.5)2,641 
2014201459.8 40.3 32.5 30.0 24.8 23.9 23.8 24.1 1.3 2,581 
2015201560.4 46.1 41.8 36.2 34.4 34.4 34.9 .5 3,390 
2016201663.1 52.0 43.5 41.3 40.7 41.2 1.6 4,117 
2017201762.6 46.5 42.4 40.8 41.0 2.5 4,470 
2018201859.3 46.0 40.6 41.3 1.1 3,487 
2019201946.4 41.2 41.0 1.4 2,562 
2020202047.4 42.6 5.6 1,668 
2021202195.0 77.5 1,091 
Total$430.1 
2022
2023
Total

Marine & Energy
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Accident Year2014201520162017201820192020202120222023
2014$5.9 $12.3 $13.4 $14.2 $14.3 $13.6 $13.8 $13.6 $13.9 $13.8 
20154.0 7.9 9.7 11.1 10.5 10.6 11.0 11.6 11.7 
20165.6 10.1 12.7 13.1 13.3 13.9 13.6 13.6 
20175.1 11.2 12.9 14.2 14.2 14.2 14.1 
20182.7 12.7 14.3 15.0 15.6 15.6 
20193.4 10.7 12.7 14.5 15.5 
20203.2 12.8 16.2 18.7 
20216.3 24.5 38.5 
202212.3 66.4 
202310.6 
Total218.5 
All outstanding liabilities before 2014, net of reinsurance6.3 
Loss and LAE reserves, net of reinsurance$331.7 
Marine & Energy
Millions
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,
Accident Year2012201320142015201620172018201920202021
2012$8.1 $24.0 $27.4 $30.2 $31.4 $33.7 $34.8 $34.0 $33.6 $33.1 
20137.9 22.6 28.1 31.1 32.8 33.3 33.5 32.9 33.3 
20148.0 17.9 21.2 24.0 24.2 22.3 22.9 22.5 
201510.2 23.1 29.2 32.9 31.3 31.4 32.4 
201616.7 29.1 35.7 36.8 37.2 38.6 
201713.3 28.5 32.9 36.0 36.0 
20186.7 31.5 35.5 37.2 
20198.1 25.9 30.7 
20206.9 26.5 
20217.8 
Total298.1 
All outstanding liabilities before 2012, gross of amounts attributable to TPC Providers3.2 
Loss and LAE reserves, gross of amounts attributable to TPC Providers$135.2 

Marine & EnergyMarine & Energy
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
YearsYears12345678910Years12345678910
20.7%37.9%18.0%6.3%3.7%6.5%1.1%0.3%(0.2)%0.4%
14.2%14.2%34.9%19.4%6.1%4.3%6.5%0.3%(0.3)%0.1%
88


Specialty
Marine & Energy
$ in Millions$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2021
$ in Millions
$ in Millions
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,
For the Years Ended December 31,
For the Years Ended December 31,As of December 31, 2023
Accident YearAccident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claimsAccident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
2012$43.1 $36.1 $31.8 $30.8 $26.7 $25.8 $26.3 $26.6 $26.8 $26.8 $2.1 887
201348.6 34.9 25.6 17.5 16.9 17.1 16.9 17.3 17.3 1.3 1,122
2014201451.1 51.1 41.9 41.3 41.5 42.9 43.5 43.5 (.3)1,409
2015201521.3 13.0 10.4 10.1 10.6 10.7 10.8 1.7 1,876
2016201615.9 11.7 8.7 9.2 9.0 9.3 (1.3)1,941
2017201716.0 11.9 10.9 10.5 10.6 1.5 2,179
2018201812.1 13.9 14.8 13.7 2.4 2,090
2019201916.6 14.6 13.5 2.8 2,315
2020202020.7 19.7 6.2 1,925
2021202167.3 57.4 1,341
Total$232.5 
2022
2023
Total
Specialty
Marine & Energy
MillionsMillions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Millions
Millions
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,For the Years Ended December 31,
Accident YearAccident Year2012201320142015201620172018201920202021Accident Year2014201520162017201820192020202120222023
2012$16.3 $25.2 $22.2 $22.6 $23.2 $23.3 $24.2 $24.4 $24.4 $24.5 
201317.1 13.6 15.2 15.8 15.8 16.0 16.0 16.0 16.0 
2014201426.8 39.7 40.4 40.8 41.5 42.8 43.6 43.5 
201520154.1 7.2 7.8 8.2 8.2 8.3 8.3 
201620163.2 8.0 9.2 10.0 10.4 10.5 
201720173.3 6.8 8.4 8.5 8.5 
201820182.9 8.1 9.8 10.3 
201920194.9 7.1 7.6 
202020205.4 10.9 
202120215.2 
Total145.3 
All outstanding liabilities before 2012, net of reinsurance(2.0)
Loss and LAE reserves, net of reinsurance$85.2 
2022
2023
Total
All outstanding liabilities before 2014, gross of amounts attributable to TPC Providers
Loss and LAE reserves, gross of amounts attributable to TPC Providers
Specialty
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Marine & Energy
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
YearsYears12345678910Years12345678910
34.0%33.8%7.3%0.5%4.6%4.4%4.6%3.1%(3.5)%(1.0)%
16.2%16.2%36.7%18.1%6.4%3.6%5.5%0.8%0.5%(0.1)%0.3%

89


Specialty
Casualty-Active
$ in Millions$ in Millions
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,As of December 31, 2021
$ in Millions
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
Incurred Loss and LAE, Net of Reinsurance
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
For the Years Ended December 31,
For the Years Ended December 31,As of December 31, 2023
Accident YearAccident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claimsAccident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
2012$43.1 $36.1 $31.8 $30.8 $34.6 $33.2 $32.3 $33.1 $33.2 $33.2 $5.1 887
201348.6 34.9 25.6 21.8 20.7 20.2 19.7 20.6 20.5 3.1 1,122
2014201466.1 65.8 56.7 55.4 55.4 59.0 60.3 60.2 (.7)1,409
2015201547.3 40.4 32.8 29.8 31.1 31.1 31.5 4.0 1,876
2016201646.4 34.1 26.3 27.5 27.3 27.9 (3.1)1,941
2017201742.5 30.1 27.6 26.4 26.6 3.7 2,179
2018201829.5 33.7 35.3 33.1 5.6 2,090
2019201939.7 34.8 32.3 6.7 2,315
2020202043.5 42.2 11.9 1,925
2021202181.7 69.3 1,341
Total$389.2 
2022
2023
Total

Casualty-Active
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Accident Year2014201520162017201820192020202120222023
2014$1.3 $3.5 $4.2 $4.7 $5.2 $5.5 $5.9 $6.0 $6.2 $6.7 
20151.8 2.4 3.2 4.4 4.7 4.9 5.1 5.5 6.1 
2016.2 1.0 2.3 4.0 4.6 5.3 6.5 8.1 
2017.8 1.7 2.8 3.4 4.2 5.7 7.5 
2018.3 1.4 3.5 4.3 4.3 6.2 
2019.3 1.4 2.3 3.0 5.7 
2020.5 1.0 2.0 3.3 
2021.5 .9 3.1 
2022.4 1.6 
2023.9 
Total49.2 
All outstanding liabilities before 2014, net of reinsurance4.8 
Loss and LAE reserves, net of reinsurance$137.1 
Specialty
Millions
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,
Accident Year2012201320142015201620172018201920202021
2012$16.3 $25.2 $22.2 $22.6 $24.4 $24.8 $27.0 $27.5 $27.6 $27.8 
201317.1 13.6 15.2 16.8 17.0 17.5 17.5 17.5 17.4 
201431.2 50.1 52.4 53.7 55.3 58.6 60.4 60.4 
201512.3 22.1 24.2 25.1 25.3 25.4 25.4 
201610.1 24.7 27.6 29.5 30.6 30.7 
20178.7 17.3 21.3 21.7 21.7 
20187.0 19.8 23.8 24.8 
201911.8 16.9 18.0 
202012.4 25.0 
20216.1 
Total257.3 
All outstanding liabilities before 2012, gross of amounts attributable to TPC Providers(4.7)
Loss and LAE reserves, gross of amounts attributable to TPC Providers$127.2 

Specialty
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
Casualty-Active
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
YearsYears12345678910Years12345678910
32.5%33.7%7.8%1.7%4.5%4.9%4.5%3.2%(4.4)%(2.4)%
4.8%4.8%8.8%14.2%11.3%8.8%10.9%6.1%4.6%2.0%3.2%
90


Casualty - Active
Casualty-Active
$ in Millions$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2021
$ in Millions
$ in Millions
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,
For the Years Ended December 31,
For the Years Ended December 31,As of December 31, 2023
Accident YearAccident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claimsAccident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
2012$22.6 $21.1 $17.7 $16.2 $10.1 $9.9 $11.0 $11.0 $11.3 $11.1 $.8 1,016 
201323.2 18.8 15.0 8.3 8.1 8.9 8.8 9.0 8.9 1.3 1,134 
2014201417.1 13.8 7.5 7.0 8.0 7.8 7.8 7.7 1.2 1,359 
2015201512.3 7.7 6.0 7.0 6.5 6.4 6.2 .6 1,247 
201620165.7 5.0 6.3 6.6 7.0 6.9 .1 1,483 
201720177.4 7.8 7.2 6.2 5.9 .7 1,489 
201820188.7 9.0 7.3 7.1 .9 961 
201920198.0 7.4 6.3 1.7 742 
202020207.6 6.2 3.9 420 
2021202115.9 14.2 452 
Total$82.2 
2022
2023
Total
Casualty - Active
Casualty-Active
MillionsMillions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Millions
Millions
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,For the Years Ended December 31,
Accident YearAccident Year2012201320142015201620172018201920202021Accident Year2014201520162017201820192020202120222023
2012$1.3 $3.3 $4.8 $6.4 $7.4 $8.0 $8.5 $9.1 $8.9 $9.1 
20131.5 3.6 5.3 5.7 6.3 6.7 7.0 7.0 7.2 
201420141.3 3.5 4.2 4.7 5.2 5.5 5.9 6.0 
201520151.8 2.4 3.2 4.4 4.7 4.9 5.1 
20162016.2 1.0 2.3 4.0 4.6 5.3 
20172017.8 1.7 2.8 3.4 4.2 
20182018.3 1.4 3.5 4.3 
20192019.3 1.4 2.3 
20202020.5 1.0 
20212021.5 
Total45.0 
All outstanding liabilities before 2012, net of reinsurance.2 
Loss and LAE reserves, net of reinsurance$37.4 
2022
2023
Total
All outstanding liabilities before 2014, gross of amounts attributable to TPC Providers
Loss and LAE reserves, gross of amounts attributable to TPC Providers
Casualty - Active
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Casualty-Active
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
YearsYears12345678910Years12345678910
9.1%14.7%18.5%14.2%9.6%10.7%3.9%3.1%1.0%3.1%
5.4%5.4%10.1%16.0%12.6%9.5%12.2%6.9%4.7%2.4%4.6%
91


Casualty - Active
Casualty-Runoff
$ in Millions$ in Millions
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,As of December 31, 2021
$ in Millions
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
Incurred Loss and LAE, Net of Reinsurance
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
For the Years Ended December 31,
For the Years Ended December 31,As of December 31, 2023
Accident YearAccident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claimsAccident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
2012$22.6 $21.1 $17.7 $16.2 $17.3 $17.6 $18.6 $18.7 $19.2 $19.0 $1.9 1,016 
201323.2 18.8 15.0 14.2 14.5 15.0 14.7 14.9 14.7 3.2 1,134 
2014201420.6 17.6 15.6 15.1 15.8 15.3 15.0 14.7 2.9 1,359 
2015201519.7 20.2 15.8 15.7 14.5 14.0 13.7 1.4 1,247 
2016201616.3 15.0 16.3 17.0 17.5 17.5 .2 1,483 
2017201720.4 20.1 18.5 15.6 15.1 1.6 1,489 
2018201821.2 22.0 17.3 17.0 2.1 961 
2019201919.5 17.5 15.1 4.2 742 
2020202016.6 13.5 8.3 420 
2021202122.1 19.0 452 
Total$162.4 
2022
2023
Total

Casualty-Runoff
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Accident Year2014201520162017201820192020202120222023
2014$6.5 $23.2 $29.6 $36.5 $43.2 $47.0 $48.7 $49.4 $51.9 $54.9 
20154.3 8.2 14.5 21.4 24.7 27.4 29.0 33.1 35.3 
20163.9 10.2 17.7 22.7 25.4 27.8 28.7 31.0 
20173.2 9.4 14.7 18.5 21.4 22.5 22.8 
20183.4 7.4 12.6 14.9 16.3 18.2 
20193.3 5.8 7.8 12.2 15.2 
2020.8 1.3 3.1 6.0 
2021.5 1.7 1.9 
2022.3 .5 
2023.9 
Total186.7 
All outstanding liabilities before 2014, net of reinsurance28.9 
Loss and LAE reserves, net of reinsurance$81.3 
Casualty - Active
Millions
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,
Accident Year2012201320142015201620172018201920202021
2012$1.3 $3.3 $4.8 $6.4 $9.3 $11.4 $12.7 $14.1 $13.6 $14.2 
20131.5 3.6 5.3 6.6 8.5 9.5 10.2 10.3 10.8 
20141.3 3.6 5.9 7.6 8.7 9.5 10.5 10.7 
20152.0 3.6 6.3 9.2 10.0 10.5 11.1 
2016.7 3.2 6.4 10.6 11.9 13.7 
20172.6 4.8 7.5 9.1 10.9 
2018.8 3.5 8.5 10.3 
2019.8 3.3 5.5 
20201.1 2.4 
20211.0 
Total90.6 
All outstanding liabilities before 2012, gross of amounts attributable to TPC Providers.8 
Loss and LAE reserves, gross of amounts attributable to TPC Providers$72.6 

Casualty - Active
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
Casualty-Runoff
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
YearsYears12345678910Years12345678910
7.4%12.5%16.9%13.5%10.2%12.1%5.6%4.1%1.9%5.4%
8.6%8.6%14.0%15.5%14.8%8.6%7.0%5.5%4.2%3.0%2.1%
92


Casualty - Runoff
Casualty-Runoff
$ in Millions$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2021
$ in Millions
$ in Millions
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,
For the Years Ended December 31,
For the Years Ended December 31,As of December 31, 2023
Accident YearAccident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claimsAccident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
2012$44.3 $44.6 $37.8 $34.4 $22.3 $21.7 $22.3 $22.8 $22.7 $23.1 $(.2)1,430 
201365.7 75.8 70.1 49.2 47.0 49.8 49.8 49.8 49.9 3.1 1,810 
2014201446.9 67.5 46.8 46.0 55.9 55.6 56.0 55.0 1.9 1,932 
2015201526.9 23.9 26.4 35.7 33.0 33.2 32.0 1.4 2,009 
2016201619.1 25.3 38.8 35.4 35.3 34.1 3.8 2,141 
2017201717.4 27.2 26.7 28.0 26.7 2.5 1,597 
2018201813.5 18.2 20.2 20.0 2.9 1,265 
2019201910.8 14.3 15.4 3.7 961 
202020204.2 6.0 3.6 552 
202120211.7 .4 260 
Total263.9 
2022
2023
Total
Casualty - Runoff
$ in millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Casualty-Runoff
Millions
Millions
Millions
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,For the Years Ended December 31,
Accident YearAccident Year2012201320142015201620172018201920202021Accident Year2014201520162017201820192020202120222023
2012$3.5 $10.4 $13.6 $16.5 $17.8 $19.3 $20.5 $20.8 $21.2 $21.8 
20137.2 19.5 35.9 41.0 42.7 44.3 45.0 45.6 46.0 
201420146.5 23.2 29.1 36.5 43.1 47.0 48.7 49.5 
201520154.3 7.9 14.0 20.3 23.9 26.5 28.2 
201620163.8 9.7 16.8 21.8 24.5 26.8 
201720173.1 9.1 14.2 18.3 21.1 
201820183.3 7.2 12.2 14.3 
201920193.2 5.6 7.4 
20202020.8 1.3 
20212021.5 
Total216.9 
All outstanding liabilities before 2012, net of reinsurance21.4 
Loss and LAE reserves, net of reinsurance$68.4 
2022
2023
Total
All outstanding liabilities before 2014, gross of amounts attributable to TPC Providers
Loss and LAE reserves, gross of amounts attributable to TPC Providers
Casualty - Runoff
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Years12345678910
9.4%15.3%17.0%15.9%9.7%8.1%7.0%3.6%2.5%1.7%
93


Casualty - Runoff
$ in Millions
Incurred Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,As of December 31, 2021
Accident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claims
2012$44.3 $44.6 $37.8 $34.4 $33.8 $33.2 $32.7 $34.0 $33.6 $34.4 $(.4)1,430 
201365.7 75.8 70.1 75.3 70.9 74.3 74.4 73.8 74.0 7.5 1,810 
201463.5 94.4 97.1 101.0 117.4 117.0 116.7 114.4 4.5 1,932 
201559.2 68.7 80.3 92.7 86.4 85.5 82.9 3.4 2,009 
201656.4 75.6 101.9 94.0 91.9 89.4 9.2 2,141 
201745.6 68.9 68.0 69.3 66.4 6.0 1,597 
201833.1 44.6 48.3 48.1 7.0 1,265 
201926.0 34.1 37.0 8.8 961 
20208.8 12.4 7.1 552 
20213.6 .5 260 
Total562.6 
Casualty-Runoff
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
Years12345678910
9.3%14.5%17.1%16.4%9.1%7.0%5.1%5.1%4.3%2.6%

Casualty - Runoff
Millions
Cumulative Paid Loss and LAE, Gross of Amounts Attributable to TPC Providers
For the Years Ended December 31,
Accident Year2012201320142015201620172018201920202021
2012$3.5 $10.4 $13.6 $16.5 $20.3 $25.3 $28.4 $29.0 $30.0 $31.4 
20137.2 19.5 35.9 50.8 56.7 60.6 62.3 63.9 64.7 
20147.4 27.4 44.8 69.3 85.8 95.4 99.4 101.3 
20157.5 18.7 38.9 54.6 63.5 69.7 73.7 
201611.6 30.1 47.5 60.1 66.5 71.9 
20179.2 24.0 36.7 46.4 53.1 
20188.3 17.8 29.5 34.6 
20197.9 13.5 17.8 
20201.8 3.0 
20211.2 
Total452.7 
All outstanding liabilities before 2012, gross of amounts attributable to TPC Providers51.7 
Loss and LAE reserves, gross of amounts attributable to TPC Providers$161.6 

Casualty - Runoff
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Gross of Amounts Attributable to TPC Providers
Years12345678910
8.7%13.5%15.9%15.7%9.6%7.7%6.2%5.1%4.8%3.0%




9493


The following table providestables provide a reconciliation from the first table grouping above, presented net of reinsurance, and the second table grouping above, presented gross of amounts attributable to TPC Providers:

December 31, 2021
Cumulative Incurred Loss and LAE
December 31, 2023December 31, 2023
Cumulative Incurred Loss and LAECumulative Incurred Loss and LAE
MillionsMillionsNet of ReinsuranceAmounts Attributable to TPC ProvidersGross of Amounts Attributable to TPC ProvidersMillionsNet of ReinsuranceAmounts Attributable to TPC ProvidersGross of Amounts Attributable to TPC Providers
Property and Accident & HealthProperty and Accident & Health$511.5 $329.6 $841.1 
Specialty
Marine & EnergyMarine & Energy259.8 170.3 430.1 
Specialty232.5 156.7 389.2 
Casualty – ActiveCasualty – Active82.2 80.2 162.4 
Casualty – RunoffCasualty – Runoff263.9 298.7 562.6 
TotalTotal$1,349.9 $1,035.5 $2,385.4 

December 31, 2021
Cumulative Paid Loss and LAE
December 31, 2023December 31, 2023
Cumulative Paid Loss and LAECumulative Paid Loss and LAE
MillionsMillionsNet of ReinsuranceAmounts Attributable to TPC ProvidersGross of Amounts Attributable to TPC ProvidersMillionsNet of ReinsuranceAmounts Attributable to TPC ProvidersGross of Amounts Attributable to TPC Providers
Property and Accident & HealthProperty and Accident & Health$337.1 $260.0 $597.1 
Specialty
Marine & EnergyMarine & Energy161.7 136.4 298.1 
Specialty145.3 112.0 257.3 
Casualty – ActiveCasualty – Active45.0 45.6 90.6 
Casualty – RunoffCasualty – Runoff216.9 235.8 452.7 
TotalTotal$906.0 $789.8 $1,695.8 

December 31, 2021
Loss and LAE Reserves
December 31, 2023December 31, 2023
Loss and LAE ReservesLoss and LAE Reserves
MillionsMillionsNet of ReinsuranceAmounts Attributable to TPC ProvidersGross of Amounts Attributable to TPC ProvidersMillionsNet of ReinsuranceAmounts Attributable to TPC ProvidersGross of Amounts Attributable to TPC Providers
Property and Accident & HealthProperty and Accident & Health$175.0 $70.5 $245.5 
Specialty
Marine & EnergyMarine & Energy99.3 35.9 135.2 
Specialty85.2 42.0 127.2 
Casualty – ActiveCasualty – Active37.4 35.2 72.6 
Casualty – RunoffCasualty – Runoff68.4 93.2 161.6 
TotalTotal$465.3 $276.8 $742.1 

95


4. Goodwill and Other Intangible Assets

As of December 31, 2021,2023, goodwill and other intangible assets recognized in connection with business and asset acquisitions totaled $1,066$371 million, of which $948$276 million was attributable to White Mountains’s common shareholders. See Note 4 — “Goodwill and Other Intangible Assets.” Goodwill and otherrepresents the excess of the amount paid to acquire subsidiaries over the fair value of identifiable net assets at the date of acquisition. Other intangible assets are recorded at their acquisition date fair values. The determination of the acquisition date fair values, of goodwill and other intangible assetswhich involves significant management judgment, the use of valuation models and assumptions that are inherently subjective. Goodwill and indefinite-lived intangible assets are not amortized but rather reviewed for potential impairment on an annual basis, or whenever indications of potential impairment exist. In the absence of any indications of potential impairment, the evaluation of goodwill and indefinite-lived intangible assets is performed no later than the interim period in which the anniversary of the acquisition date falls. Finite-lived intangible assets, which are amortized over their estimated economic lives, are reviewed for impairment only when events occur or there are changes in circumstances indicating that their carrying value may exceed fair value. ImpairmentAn impairment exists when the carrying value of goodwill or other intangible assets exceeds fair value.
94


White Mountains’s annual review first assesses whether qualitative factors indicate that the carrying value of goodwill or other intangible assets may be impaired. If White Mountains determines, based on this qualitative review, that it is more likely than not that an impairment may exist, then White Mountains performs a quantitative analysis to compare the fair value of a reporting unit with its carrying value. If the carrying value exceeds the estimated fair value, then an impairment charge is recognized through current period pre-tax income (loss). Both the annual qualitative assessment of potential impairment as well as the quantitative comparison of carrying value to estimated fair value involve management judgment, the use of discounted cash flow models, market comparisons and other valuation techniques and assumptions, including customer retention rates and revenue growth rates, that are inherently subjective.
MostAs of December 31, 2023, White Mountains’sMountains had total goodwill and other intangible assets of $1,066$371 million, relatesof which $293 million related to the acquisition of ArkArk. During 2023 and NSM and NSM’s subsequent acquisitions of KBK, Embrace, the Renewal Rights from AIG, Kingsbridge and J.C. Taylor. As of December 31, 2021, goodwill and other intangible assets related to Ark and NSM were $293 million and $725 million. During 2021,2022, White Mountains performed its periodic reviews for potential impairment including a quantitative review of the goodwill associated with NSM. During 2021, White Mountainsand did not recognize any impairments of goodwill and other intangible assets. During 2021, White Mountains recognized a loss on assets held for sale of $29 million that was primarily related to the goodwill associated with the Fresh Insurance motor business. During 2020, White Mountains recognized impairments of other intangible assets of $6 million related to Fresh Insurance. The impairments related to lower premium volumes, including due to the impact of the COVID-19 pandemic, and certain reorganization initiatives at Fresh Insurance. During 2020, White Mountains did not recognize any goodwill impairments.
See Item 1A. Risk Factors,If we are required to write down goodwill and other intangible assets, it could materially adversely affect our results of operations and financial condition.” on page 26.   27.

96


FORWARD-LOOKING STATEMENTS

This report may contain “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements, other than statements of historical facts, included or referenced in this report which address activities, events or developments which White Mountains expects or anticipates will or may occur in the future are forward-looking statements. The words “could”, “will”, “believe”, “intend”, “expect”, “anticipate”, “project”, “estimate”, “predict” and similar expressions are also intended to identify forward-looking statements. These forward-looking statements include, among others, statements with respect to White Mountains’s:

change in book value orper share, adjusted book value per share or return on equity;
business strategy;
financial and operating targets or plans;
incurred loss and loss adjustment expensesLAE and the adequacy of its loss and loss adjustment expenseLAE reserves and related reinsurance;
projections of revenues, income (or loss), earnings (or loss) per share, EBITDA, adjusted EBITDA, dividends, market share or other financial forecasts of White Mountains or its businesses;
expansion and growth of its business and operations; and
future capital expenditures.

These statements are based on certain assumptions and analyses made by White Mountains in light of its experience and perception of historical trends, current conditions and expected future developments, as well as other factors believed to be appropriate in the circumstances. However, whether actual results and developments will conform to its expectations and predictions is subject to risks and uncertainties that could cause actual results to differ materially from expectations, including:

the risks associated with Item 1A of this Report on Form 10-K;
claims arising from catastrophic events, such as hurricanes, windstorms, earthquakes, floods, fires,wildfires, tornadoes, tsunamis, severe weather, public health crises, terrorist attacks, war and war-like actions, explosions, infrastructure failures or severe winter weather;cyber attacks;
recorded loss reserves subsequently proving to have been inadequate;
the market value of White Mountains’s investment in MediaAlpha;
the trends and uncertainties from the COVID-19 pandemic, including judicial interpretations on the extent of insurance coverage provided by insurers for COVID-19 pandemic related claims;
business opportunities (or lack thereof) that may be presented to it and pursued;
actions taken by rating agencies, such as financial strength or credit ratings downgrades or placing ratings on negative watch;
the continued availability of capital and financing;
the continued availability of fronting and reinsurance capacity;
deterioration of general economic, market or business conditions, including due to outbreaks of contagious disease (including the COVID-19 pandemic) and corresponding mitigation efforts;
competitive forces, including the conduct of other insurers;
changes in domestic or foreign laws or regulations, or their interpretation, applicable to White Mountains, its competitors or its customers; and
other factors, most of which are beyond White Mountains’s control.

95


Consequently, all of the forward-looking statements made in this report are qualified by these cautionary statements, and there can be no assurance that the actual results or developments anticipated by White Mountains will be realized or, even if substantially realized, that they will have the expected consequences to, or effects on, White Mountains or its business or operations. White Mountains assumes no obligation to publicly update any such forward-looking statements, whether as a result of new information, future events or otherwise.


97


Item 7A.  Quantitative and Qualitative Disclosures About Market Risk

White Mountains’s consolidated balance sheet includes a substantial amount of assets and liabilities whose fair values are subject to market risk. The term market risk refers to the risk of loss arising from adverse changes in interest rates, credit spreads, equity markets prices and other relevant market rates and prices. Due to the size of White Mountains’s investment portfolio, market risk could have a significant effect on White Mountains’s consolidated financial condition, results of operations and cash flows.

Interest Rate and Credit Spread Risk

White Mountains invests in interest rate sensitive securities. White Mountains generally manages the interest rate risk associated with its portfolio of fixed maturity investments by monitoring the average duration of the portfolio. As of December 31, 2021,2023, White Mountains’s fixed maturity investments are comprised primarily of debt securities issued by corporations, U.S. government and agency obligations, municipal obligations, mortgage and asset-backed securities and collateralized loan obligations.
Increases and decreases in prevailing interest rates generally translate into decreases and increases in fair values of fixed maturity investments, respectively. Additionally, fair values of interest rate sensitive instruments may be affected by the creditworthiness of the issuer, prepayment options, relative values of alternative investments, the liquidity of the instrument and various other market factors.
The following table presents the estimated effects of hypothetical increases and decreases in market interest rates on White Mountains’s fixed maturity investments:
$ in Millions$ in MillionsFair Value at
December 31, 2021
Assumed Change in Relevant Interest RateEstimated Fair Value
After Change in
Interest Rate
Pre-Tax Increase (Decrease) in Fair Value$ in MillionsFair Value at
December 31, 2023
Assumed Change in Relevant Interest RateEstimated Fair Value
After Change in
Interest Rate
Pre-Tax Increase (Decrease) in Fair Value
Fixed maturity investmentsFixed maturity investments$1,908.9 100 bps decrease$1,966.5 $57.6 
50 bps decrease1,939.4 30.5 
50 bps increase1,877.2 (31.7)
100 bps increase1,844.8 (64.1)
50 bps decrease
50 bps increase
100 bps increase

The magnitude of the fair value decrease in rising interest rate scenarios may be more significant than the fair value increase in comparable falling interest rate scenarios. This can occur because (i) the analysis floors interest rates at a de minimis level in falling interest rate scenarios, muting price increases, (ii) portions of the fixed maturity investment portfolio may be callable, muting price increases in falling interest rate scenarios and/or (iii) portions of the fixed maturity investment portfolio may experience cash flow extension in higher interest rate environments, which generally results in lower prices.
White Mountains’s overall strategy for fixed maturity investments is to purchase securities that are attractively priced in relation to their investment risks. Widening and tightening of credit spreads translate into decreases and increases in fair values of fixed maturity investments, respectively.

96


The following table presents the estimated pre-tax effects of hypothetical widening and tightening of credit spreads on White Mountains’s fixed maturity investments by asset class:
December 31, 2021
$ in MillionsFair ValueTighten 50Tighten 25Widen 25Widen 50
December 31, 2023December 31, 2023
MillionsMillionsFair ValueTighten 50Tighten 25Widen 25Widen 50
U.S. government and agency obligationsU.S. government and agency obligations$211.5 $— $— $— $— 
Tighten 100Tighten 50Widen 50Widen 100
Tighten 100
Tighten 100
Tighten 100Tighten 50Widen 50Widen 100
Agency mortgage-backed securitiesAgency mortgage-backed securities256.0 1.1 .8 (6.0)(11.7)
Other asset-backed securitiesOther asset-backed securities21.1 .1 .1 (.2)(.4)
Non-agency: residential mortgage-backed securitiesNon-agency: residential mortgage-backed securities.5     
Tighten 200Tighten 100Widen 100Widen 200
Tighten 200Tighten 200Tighten 100Widen 100Widen 200
Debt securities issued by corporationsDebt securities issued by corporations992.9 20.3 19.0 (34.1)(68.2)
Municipal obligationsMunicipal obligations291.9 8.6 8.4 (14.9)(29.8)
Tighten 300Tighten 200Widen 200Widen 300
Tighten 300Tighten 300Tighten 200Widen 200Widen 300
Collateralized loan obligationsCollateralized loan obligations135.0 10.8 10.7 (13.0)(18.8)

98


The magnitude of the fair value decrease in wider credit spread scenarios may be more significant than the fair value increase in comparable tighter credit spread scenarios. This can occur because the analysis limits the credit spread tightening in order to establish a floor for yields of non-government bonds above yields of short government bonds, thereby muting price increases.

Common Equity Securities, Investment in MediaAlpha and Other Long-Term Investments Price Risk

The carrying values of White Mountains’s common equity securities, its investment in MediaAlpha and other long-term investments are based on quoted market prices or management’s estimates of fair value as of the balance sheet date. Market prices of common equity securities, in general, are subject to fluctuations, which could cause the amount realized upon sale or exercise of these instruments to differ significantly from the current reported value. The fluctuations may result from perceived changes in the underlying economic characteristics of the investment, the relative price of alternative investments, supply and demand imbalances for a particular security or various other market factors. Assuming a hypothetical 10% and 30% increase or decrease in the value of White Mountains’s common equity securities, its investment in MediaAlpha and other long-term investments as of December 31, 2021,2023, the carrying value of White Mountains’s common equity securities, its investment in MediaAlpha and other long-term investments would increase or decrease by $189$279 million and $567$837 million on a pre-tax basis, respectively.

Long-Term Obligations

    White Mountains records its financial instruments at fair value with the exception of debt obligations, which are recorded as debt at face value less unamortized original issue discount.
    The following tablestable presents the fair value and carrying value of these financial instruments as of December 31, 20212023 and December 31, 2020:2022:
December 31, 2021December 31, 2020
December 31, 2023December 31, 2023December 31, 2022
MillionsMillionsFair
Value
Carrying
Value
Fair
Value
Carrying
Value
MillionsFair
Value
Carrying
Value (1)
Fair
Value
Carrying
Value (1)
HG Global Senior Notes
Ark 2007 Subordinated NotesArk 2007 Subordinated Notes$27.6 $30.0 $— $— 
Ark 2021 Subordinated NotesArk 2021 Subordinated Notes$162.8 $155.9 $— $— 
NSM Bank Facility$275.8 $271.2 $279.3 $271.3 
Other NSM debt$1.0 $.9 $1.3 $1.3 
Kudu Credit FacilityKudu Credit Facility$246.8 $218.2 $— $— 
Kudu Bank Facility$ $ $89.3 $86.3 
Other Operations debtOther Operations debt$17.7 $16.8 $18.8 $17.5 
(1)See Note 7 — “Debt” for details of debt arrangements.

The fair value estimates for the HG Global Senior Notes, Ark 2007 Subordinated Notes, the Ark 2021 Subordinated Notes, NSM Bank Facility, the Other NSM debt, the Kudu Credit Facility, the Kudu Bank Facility and Other Operations debt have been determined based on a discounted cash flow approach and are considered to be Level 3 measurements.


9997


Foreign Currency Exposure

As of December 31, 2021,2023, White Mountains had foreign currency exposure on $310.7$204 million of net assets primarily related to Ark’sArk/WM Outrigger’s non-U.S. business, NSM’s U.K.-based operations, Kudu’s non-U.S. Participation Contracts and certain other foreign consolidated and unconsolidated entities.
The following table presents the fair value of White Mountains’s foreign denominated net assets (net liabilities)(liabilities) by segment as of December 31, 2021:2023:
Currency
$ in Millions
Currency
$ in Millions
ArkNSMKuduOther OperationsTotal Fair Value
% of Total Shareholders Equity
Currency
$ in Millions
Currency
$ in Millions
CADCAD$55.4 $— $81.3 $— $136.7 3.7 %
GBP7.7 118.6 — — 126.3 3.4 
CAD
CAD
AUD
AUD
AUDAUD23.3 — 44.7 — 68.0 1.8 
EUREUR(56.2)— — 32.3 (23.9)(.6)
EUR
EUR
GBP
GBP
GBP
All other
All other
All otherAll other— — — 3.6 3.6 .1 
TotalTotal$30.2 $118.6 $126.0 $35.9 $310.7 8.4 %
Total
Total

The following table illustrates the pre-tax effect that a hypothetical 20% increase (i.e., U.S. dollar strengthening) or decrease (i.e., U.S. dollar weakening) in the rate of exchange from the foreign currencies to the U.S. dollar would have on the
carrying value of White Mountains’s foreign denominated net assets as of December 31, 2021:2023:
$ in millions
Carrying Value of Foreign Denominated Net AssetsHypothetical ChangeHypothetical Pre-Tax Increase (Decrease) in Carrying ValueHypothetical Percentage Increase (Decrease) in Stockholders’ Equity
$310.7 20% increase$(62.1)(1.7)%
20% decrease$62.1 1.7 %
$ in Millions
Carrying Value of Foreign Denominated Net AssetsHypothetical ChangeHypothetical Pre-Tax Increase (Decrease) in Carrying ValueHypothetical Percentage Increase (Decrease) in Stockholders’ Equity
$203.8 20% increase$(40.8)(1.0)%
20% decrease$40.8 1.0 %

Item 8.  Financial Statements and Supplementary Data

The financial statements and supplementary data have been filed as a 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 106103 of this report.
The financial statements of MediaAlpha for the years ended December 31, 20212023, 2022 and 2020 and the period from February 26, 2019 through December 31, 20192021 have been filed as a part of this Annual Report on Form 10-K (see ExhibitsExhibit 99.1 and 99.2 on page 104101 of this report).

Item 9.  Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A.  Controls and Procedures

The Principal Executive Officer (“PEO”) and the Principal Financial Officer (“PFO”) of White Mountains have evaluated the effectiveness of its disclosure controls and procedures (as defined in Rule 13a-15(e) of the Exchange Act) as of December 31, 2021.2023. Based on that evaluation, the PEO and PFO have concluded that White Mountains’s disclosure controls and procedures are adequate and effective.
The PEO and the PFO of White Mountains have evaluated the effectiveness of its internal control over financial reporting as of December 31, 2021.2023. Based on that evaluation, the PEO and PFO have concluded that White Mountains’s internal control over financial reporting is effective. Management’s annual report on internal control over financial reporting is included on page F-78F-73 of this report. The attestation report on the effectiveness of our internal control over financial reporting by PricewaterhouseCoopers LLP is included on page F-79F-74 of this report.
There has been no change in White Mountains’s internal controls over financial reporting that occurred during the fourth quarter of 20212023 that has materially affected, or is reasonably likely to materially affect, White Mountains’s internal control over financial reporting.

10098


Item 9B.  Other Information

None.

PART III

Item 10.   Directors, Executive Officers and Corporate Governance

Reported under the captions “The Board of Directors”, “Section 16(a) Beneficial Ownership Reporting Compliance”“Corporate Governance—Committees of the Board—Compensation/Nominating & Governance Committee” and “Corporate Governance—Committees of the Board—Audit Committee” in the Company’s 20222024 Proxy Statement, herein incorporated by reference, and under the caption “Executive Officers of the Registrant”“Information About Our Executive Officers” of this Annual Report on Form 10-K.
The 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, is available at www.whitemountains.com and is also included as Exhibit 14 on the Form 10-K. The Company’s Code of Business Conduct is also available in print free of charge to any shareholder upon request.
There have been no material changes to the procedures by which shareholders may recommend nominees to the Company’s Board of Directors. The procedures for shareholders to nominate directors are reported under the caption “Corporate Governance—CommitteesConsideration of the Board—Nominating and Governance Committee”Director Nominees” in the Company’s 20222024 Proxy Statement, herein incorporated by reference.

Item 11.  Executive Compensation

Reported under the captions “Executive Compensation”, “CEO Pay Ratio” and “Corporate Governance—Compensation Committee Interlocks and Insider Participation”Committees of the Board—Compensation/Nominating & Governance Committee” in the Company’s 20222024 Proxy Statement, herein incorporated by reference.

Item 12.  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

Reported under the captions “Voting Securities and Principal Holders Thereof” and “Equity Compensation Plan Information” in the Company’s 20222024 Proxy Statement, herein incorporated by reference.

Item 13.  Certain Relationships, Related Transactions and Director Independence

Reported under the caption “Transactions with Related Persons, Promoters and Certain Control Persons” and “Corporate Governance—Director Independence” in the Company’s 20222024 Proxy Statement, herein incorporated by reference.

Item 14.  Principal Accountant Fees and Services

Reported under the caption “Principal Accountant Fees and Services” in the Company’s 20222024 Proxy Statement, herein incorporated by reference.

10199


PART IV

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 106103 of this report. A listing of exhibits filed as part of the report appear below through page 104101 of this report.

b.                                      Exhibits

Exhibit
Number
Name
2.1
2.2
Subscription and Purchase Agreement dated October 1, 2020 by and among Ark Insurance Holdings Limited, Bridge Holdings (Bermuda) Ltd., White Mountains Insurance Group, Ltd. and the selling shareholders party thereto (incorporated by reference herein to Exhibit 2.1 of the Company’s Current Report on Form 8-K dated October 1, 2020)
2.3
Subscription and Purchase Agreement amended and restated on December 14, 2020 by and among Ark Insurance Holdings Limited, Bridge Holdings (Bermuda) Ltd., White Mountains Insurance Group, Ltd. and the selling shareholders party thereto (incorporated by reference herein to Exhibit 2.1 of the Company’s Current Report on Form 8-K dated December 15, 2020)
2.4
Management Warranty Deed dated October 1, 2020 by and among Ian Beaton, Nicholas Bonnar, Neil Smith and Bridge Holdings (Bermuda) Ltd. (incorporated by reference herein to Exhibit 2.2 of the Company’s Current Report on Form 8-K dated October 1, 2020)
3.1
3.2
4
10.1
White Mountains Long-Term Incentive Plan, as amended (incorporated by reference to Appendix A of the Company’s Notice of 2013 Annual General Meeting of Members and Proxy Statement dated April 10, 2013)
10.2
White 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)
10.310.2
Regulation 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)
10.410.3
SecondThird 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 August 14, 2017January 15, 2020 (incorporated by reference herein and filed asto Exhibit 99.(d)(7)10.1 of the Company’s Schedule TOReport on Form 10-Q dated April 10, 2018)August 7, 2023)
10.510.4
SecondThird 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 December 4, 2018January 15, 2020 (incorporated by reference herein to Exhibit 10.710.2 of the Company’s 2018 Annual Report on Form 10-K)10-Q dated August 7, 2023)
10.610.5
White Mountains Bonus Plan (incorporated by reference herein to Exhibit 10.1 of the Company’s Report on Form 10-Q dated May 6, 2019)2022)
10.710.6
Credit Agreement Dated as of May 11, 2018 among NSM Insurance Group, LLC, as the Borrower, NSM Insurance Holdco, LLC, as Holdings, Ares Capital Corporation, as Administrative Agent, and the Lenders and L/C Issuers party thereto from time to time (incorporated by reference herein to Exhibit 10 of the Company’s Report on Form10-Q dated August 7, 2018)

102


Exhibit
Number
Name
10.8
FIRST AMENDMENT dated as of December 3, 2018, among NSM INSURANCE GROUP, LLC, a Delaware limited liability company, NSM INSURANCE HOLDCO, LLC, a Delaware limited liability company, the other LOAN PARTIES party thereto, ARES CAPITAL CORPORATION, a Maryland corporation, as administrative agent, and the LENDERS party thereto (incorporated by reference herein to Exhibit 10.2 of the Company’s Report on Form 10-Q dated May 6, 2019)
10.9
SECOND AMENDMENT dated as of April 1, 2019, among NSM INSURANCE GROUP, LLC, a Delaware limited liability company, NSM INSURANCE HOLDCO, LLC, a Delaware limited liability company, the other LOAN PARTIES party thereto, ARES CAPITAL CORPORATION, a Maryland corporation, as administrative agent, and the LENDERS party thereto (incorporated by reference herein to Exhibit 10.3 of the Company’s Report on Form 10-Q dated May 6, 2019)
10.10
THIRD AMENDMENT dated as of June 28, 2019, among NSM INSURANCE GROUP, LLC, a Delaware limited liability company, NSM INSURANCE HOLDCO, LLC, a Delaware limited liability company, the other LOAN PARTIES party thereto, ARES CAPITAL CORPORATION, a Maryland corporation, as administrative agent, and the LENDERS party thereto (incorporated by reference herein to Exhibit 10 of the Company’s Report on Form 10-Q dated August 6, 2019)
10.11
FOURTH AMENDMENT dated as of April 7, 2020, among NSM INSURANCE GROUP, LLC, NSM INSURANCE HOLDCO, LLC, NSM UK HOLDINGS LTD, the other LOAN PARTIES party thereto, ARES CAPITAL CORPORATION, as administrative agent, and the LENDERS party thereto (incorporated by reference herein to Exhibit 10 of the Company’s Report on Form 10-Q dated May 8, 2020)
10.12
10.13
10.14
10.15
10.1610.7
10.8
10.1710.9

100


10.18Exhibit
Number
Name
10.10
10.1910.11
10.2010.12
10.13
14
21
23.1
23.2
23.3
24
31.1
31.2
103


Exhibit
Number
Name
32.1
32.2
97.1
99.1
99.2
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, 20212023 and 20202022 and for the three years in the period ended December 31, 2021.2023. 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.
(****)     Exhibit 99.2 to this Annual Report on Form 10-K is being filed to provide audited financial statements and the related footnotes as of December 31, 2019 and for the period from February 26, 2019 through December 31, 2019. The management of MediaAlpha is solely responsible for the form and content of the QL Holdings financial statements. White Mountains has no responsibility for the form or content of the QL Holdings 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 106103 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.

Item 16.  Form 10-K Summary.

None.

104101


SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Company has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
WHITE MOUNTAINS INSURANCE GROUP, LTD.
Date:February 28, 202226, 2024By:/s/ MICHAELA J. HILDRETH
Michaela J. Hildreth
Managing Director and Chief Accounting Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Company and in the capacities and on the dates indicated.
SignatureTitleDate
/s/ REID T. CAMPBELLLIAM P. CAFFREYExecutive Vice President and Chief Financial Officer
(Principal Financial Officer)
February 28, 202226, 2024
Liam P. Caffrey
REID T. CAMPBELL*DirectorFebruary 26, 2024
Reid T. Campbell
PETER M. CARLSON*DirectorFebruary 28, 202226, 2024
Peter M. Carlson
MARY C. CHOKSI*DirectorFebruary 28, 202226, 2024
Mary C. Choksi
MORGAN W. DAVIS*ChairmanFebruary 28, 2022
Morgan W. Davis
MARGARET DILLON*DirectorFebruary 28, 202226, 2024
Margaret Dillon
PHILIP A. GELSTON*DirectorFebruary 28, 202226, 2024
Philip A. Gelston
WESTON M. HICKS*ChairmanFebruary 26, 2024
Weston M. Hicks
/s/ MICHAELA J. HILDRETHManaging Director and Chief Accounting Officer
(Principal Accounting Officer)
February 28, 202226, 2024
Michaela J. Hildreth
/s/ G. MANNING ROUNTREEChief Executive Officer (Principal Executive Officer)February 28, 202226, 2024
G. Manning Rountree
SUZANNE F. SHANK*DirectorFebruary 28, 202226, 2024
Suzanne F. Shank
DAVID A. TANNER*DirectorFebruary 28, 202226, 2024
David A. Tanner
STEVEN M. YI*DirectorFebruary 26, 2024
Steven M. Yi
* By:/s/ G. MANNING ROUNTREE
G. Manning Rountree, Attorney-in-Fact
105102


WHITE MOUNTAINS INSURANCE GROUP, LTD.
Index to Consolidated Financial Statements and Financial Statement Schedules
 
Form 10-K
Page(s)
Consolidated financial statements:
F - 1

December 31, 2021, 20202023, 2022 and 20192021
F - 3

   2022 and 20192021
F - 5

December 31, 2021, 20202023,
   2022 and 20192021
F - 6

F - 7

F - 8

Other financial information:
Management’s annual report on internal control over financial reporting
F - 7873
F - 7974
Financial statement schedules:
FS-FS - 1

Condensed financial information of the Registrant as of December 31, 20212023 and 20202022 and for each
   of the years ended December 31, 2021, 20202023, 2022 and 20192021
FS-2FS - 2
Supplementary insurance information as of December 31, 20212023 and 20202022 and for each of the years
   ended December 31, 2021, 20202023, 2022 and 20192021
FS-FS - 5

Reinsurance for each of the years ended December 31, 2021, 20202023, 2022 and 20192021
FS-FS - 6

VFS-7FS - 7
VIFS-8FS - 8



106103


CONSOLIDATED BALANCE SHEETS

December 31,
December 31,December 31,
Millions, Except Share and Per Share AmountsMillions, Except Share and Per Share Amounts20212020Millions, Except Share and Per Share Amounts20232022
AssetsAssets
Financial Guarantee (HG Global/BAM)Financial Guarantee (HG Global/BAM)
Financial Guarantee (HG Global/BAM)
Financial Guarantee (HG Global/BAM)
Fixed maturity investments, at fair value
Fixed maturity investments, at fair value
Fixed maturity investments, at fair value Fixed maturity investments, at fair value$934.1 $859.5 
Short-term investments, at fair value Short-term investments, at fair value32.4 60.4 
Total investmentsTotal investments966.5 919.9 
Cash Cash19.8 42.8 
Insurance premiums receivable Insurance premiums receivable6.9 6.9 
Deferred acquisition costs Deferred acquisition costs33.1 27.8 
Other assets Other assets18.5 20.4 
Other assets
Other assets
Total Financial Guarantee assetsTotal Financial Guarantee assets1,044.8 1,017.8 
P&C Insurance and Reinsurance (Ark)
P&C Insurance and Reinsurance (Ark/WM Outrigger)
Fixed maturity investments, at fair value
Fixed maturity investments, at fair value
Fixed maturity investments, at fair valueFixed maturity investments, at fair value688.6 — 
Common equity securities, at fair valueCommon equity securities, at fair value251.1 — 
Short-term investments, at fair valueShort-term investments, at fair value296.2 — 
Other long-term investmentsOther long-term investments326.2 — 
Total investmentsTotal investments1,562.1 — 
Cash67.8 — 
Cash (restricted $0.7, $6.1)
Reinsurance recoverablesReinsurance recoverables448.4 — 
Insurance premiums receivableInsurance premiums receivable416.0 — 
Ceded unearned premiums67.1 — 
Deferred acquisition costs and value of in-force business acquired108.2 — 
Deferred acquisition costs
Deferred acquisition costs
Deferred acquisition costs
Goodwill and other intangible assets
Goodwill and other intangible assets
Goodwill and other intangible assetsGoodwill and other intangible assets292.5 — 
Other assetsOther assets64.9 — 
Total P&C Insurance and Reinsurance assetsTotal P&C Insurance and Reinsurance assets3,027.0 — 
Specialty Insurance Distribution (NSM)
Cash (restricted $89.2, $78.4)111.5 126.5 
Premium and commission receivable85.0 76.7 
Goodwill and other intangible assets725.4 736.8 
Other assets55.4 59.6 
Total Specialty Insurance Distribution assets977.3 999.6 
Asset Management (Kudu)Asset Management (Kudu)
Short-term investments, at fair value
Short-term investments, at fair value
Short-term investments, at fair value
Other long-term investmentsOther long-term investments669.5 400.6 
Cash (restricted $4.5, $0.0)21.4 7.8 
Total investments
Cash (restricted $0.0, $12.2)
Accrued investment incomeAccrued investment income16.9 9.8 
Goodwill and other intangible assetsGoodwill and other intangible assets8.9 9.2 
Other assetsOther assets10.4 2.8 
Total Asset Management assetsTotal Asset Management assets727.1 430.2 
Other OperationsOther Operations
Other Operations
Other Operations
Fixed maturity investments, at fair value Fixed maturity investments, at fair value286.2 347.7 
Fixed maturity investments, at fair value
Fixed maturity investments, at fair value
Common equity securities, at fair value
Investment in MediaAlpha, at fair value
Short-term investments, at fair value Short-term investments, at fair value137.3 82.4 
Investment in MediaAlpha, at fair value261.6 802.2 
Other long-term investments
Other long-term investments
Other long-term investments Other long-term investments382.1 386.2 
Total investmentsTotal investments1,067.2 1,618.5 
Cash Cash38.8 34.1 
Cash pre-funded/placed in escrow for Ark Transaction 646.3 
Goodwill and other intangible assets
Goodwill and other intangible assets
Goodwill and other intangible assets Goodwill and other intangible assets39.1 36.4 
Other assets Other assets63.3 46.2 
Assets held for sale16.1 2.3 
Total Other Operations assets
Total Other Operations assets
Total Other Operations assetsTotal Other Operations assets1,224.5 2,383.8 
Total assetsTotal assets$7,000.7 $4,831.4 
See Notes to Consolidated Financial Statements.
F - 1


CONSOLIDATED BALANCE SHEETS (CONTINUED)

December 31,
December 31,December 31,
Millions, Except Share and Per Share AmountsMillions, Except Share and Per Share Amounts20212020Millions, Except Share and Per Share Amounts20232022
LiabilitiesLiabilities
Financial Guarantee (HG Global/BAM)Financial Guarantee (HG Global/BAM)
Financial Guarantee (HG Global/BAM)
Financial Guarantee (HG Global/BAM)
Unearned insurance premiums Unearned insurance premiums$266.3 $237.5 
Unearned insurance premiums
Unearned insurance premiums
Debt
Accrued incentive compensation Accrued incentive compensation24.7 25.7 
Other liabilities Other liabilities30.9 28.3 
Other liabilities
Other liabilities
Total Financial Guarantee liabilitiesTotal Financial Guarantee liabilities321.9 291.5 
P&C Insurance and Reinsurance (Ark)
P&C Insurance and Reinsurance (Ark/WM Outrigger)
Loss and loss adjustment expense reserves
Loss and loss adjustment expense reserves
Loss and loss adjustment expense reservesLoss and loss adjustment expense reserves894.7 — 
Unearned insurance premiumsUnearned insurance premiums495.9 — 
DebtDebt185.9 — 
Reinsurance payableReinsurance payable424.1 — 
Contingent considerationContingent consideration28.0 — 
Other liabilitiesOther liabilities93.8 — 
Other liabilities
Other liabilities
Total P&C Insurance and Reinsurance liabilitiesTotal P&C Insurance and Reinsurance liabilities2,122.4 — 
Specialty Insurance Distribution (NSM)
Asset Management (Kudu)
Asset Management (Kudu)
Asset Management (Kudu)
Debt
Debt
DebtDebt272.1 272.6 
Premiums payable135.9 113.4 
Contingent consideration6.8 14.6 
Other liabilities Other liabilities80.5 91.2 
Total Specialty Insurance Distribution liabilities495.3 491.8 
Asset Management (Kudu)
Debt218.2 86.3 
Other liabilities
Other liabilitiesOther liabilities42.8 10.0 
Total Asset Management liabilitiesTotal Asset Management liabilities261.0 96.3 
Other OperationsOther Operations
Other Operations
Other Operations
Debt
Debt
DebtDebt16.8 17.5 
Accrued incentive compensationAccrued incentive compensation48.5 70.1 
Accrued incentive compensation
Accrued incentive compensation
Other liabilities Other liabilities30.1 46.3 
Other liabilities
Other liabilities
Total Other Operations liabilities
Total Other Operations liabilities
Total Other Operations liabilities Total Other Operations liabilities95.4 133.9 
Total liabilitiesTotal liabilities3,296.0 1,013.5 
EquityEquity
Equity
Equity
White Mountains’s common shareholders’ equityWhite Mountains’s common shareholders’ equity
White Mountains’s common shares at $1 par value per share—authorized 50,000,000 shares;
issued and outstanding 3,017,772 and 3,102,011 shares
3.0 3.1 
White Mountains’s common shareholders’ equity
White Mountains’s common shareholders’ equity
White Mountains’s common shares at $1 par value per share—authorized 50,000,000 shares;
issued and outstanding 2,560,452 and 2,572,156 shares
White Mountains’s common shares at $1 par value per share—authorized 50,000,000 shares;
issued and outstanding 2,560,452 and 2,572,156 shares
White Mountains’s common shares at $1 par value per share—authorized 50,000,000 shares;
issued and outstanding 2,560,452 and 2,572,156 shares
Paid-in surplus Paid-in surplus585.9 592.1 
Retained earnings Retained earnings2,957.5 3,311.2 
Accumulated other comprehensive gain (loss), after-tax:
Net unrealized foreign currency translation and interest rate swap gains (losses)1.7 (.4)
Accumulated other comprehensive income (loss), after-tax:
Net unrealized gains (losses) from foreign currency translation and interest rate swap
Net unrealized gains (losses) from foreign currency translation and interest rate swap
Net unrealized gains (losses) from foreign currency translation and interest rate swap
Total White Mountains’s common shareholders’ equity Total White Mountains’s common shareholders’ equity3,548.1 3,906.0 
Non-controlling interests156.6 (88.1)
Total White Mountains’s common shareholders’ equity
Total White Mountains’s common shareholders’ equity
Noncontrolling interests
Total equityTotal equity3,704.7 3,817.9 
Total liabilities and equityTotal liabilities and equity$7,000.7 $4,831.4 
See Notes to Consolidated Financial Statements including Note 1413 Common Shareholders’ Equity and Non-controllingNoncontrolling Interests and Note 2019 for Commitments and Contingencies.


F - 2


CONSOLIDATED STATEMENTS OF OPERATIONS
Year Ended December 31,
Millions202120202019
Revenues:
Financial Guarantee (HG Global/BAM)
   Earned insurance premiums$26.9 $22.8 $16.3 
   Net investment income17.5 19.5 21.6 
   Net realized and unrealized investment gains (losses)(22.9)23.7 27.1 
   Other revenues1.5 2.5 1.6 
Total Financial Guarantee revenues23.0 68.5 66.6 
P&C Insurance and Reinsurance (Ark)
Earned insurance premiums$637.3 $— $— 
Net investment income2.9 — — 
Net realized and unrealized investment gains (losses)16.5 — — 
Other revenues11.8 — — 
Total P&C Insurance and Reinsurance revenues668.5 — — 
Specialty Insurance Distribution (NSM)
   Commission revenues258.0 232.5 193.4 
   Other revenues72.4 52.6 39.7 
Total Specialty Insurance Distribution revenues330.4 285.1 233.1 
Asset Management (Kudu)
Net investment income43.9 29.5 14.7 
Net realized and unrealized investment gains (losses)89.9 15.9 6.3 
Other revenues.2 .3 .2 
Total Asset Management revenues134.0 45.7 21.2 
Marketing Technology (MediaAlpha)
   Advertising and commission revenues — 48.8 
Total Marketing Technology revenues — 48.8 
Other Operations
   Net investment income18.2 82.0 43.4 
Net realized and unrealized investment gains (losses)50.7 (8.8)219.8 
Net realized and unrealized investment gains (losses) from investment in MediaAlpha(380.3)686.0 180.0 
Realized gain (loss) from the 2019 MediaAlpha Transaction — 67.5 
Commission revenues9.6 8.3 6.9 
   Other revenues90.7 13.9 6.1 
Total Other Operations revenues(211.1)781.4 523.7 
Total revenues$944.8 $1,180.7 $893.4 

Year Ended December 31,
Millions202320222021
Revenues:
Financial Guarantee (HG Global/BAM)
   Earned insurance premiums$31.2 $33.3 $26.9 
   Net investment income31.7 21.5 17.5 
   Net realized and unrealized investment gains (losses)26.6 (105.8)(22.9)
   Other revenues2.9 4.6 1.5 
Total Financial Guarantee revenues92.4 (46.4)23.0 
P&C Insurance and Reinsurance (Ark/WM Outrigger)
Earned insurance premiums1,409.7 1,043.4 637.3 
Net investment income61.4 16.3 2.9 
Net realized and unrealized investment gains (losses)85.9 (55.2)16.5 
Other revenues0.8 5.0 11.8 
Total P&C Insurance and Reinsurance revenues1,557.8 1,009.5 668.5 
Asset Management (Kudu)
Net investment income71.0 54.4 43.9 
Net realized and unrealized investment gains (losses)106.1 64.1 89.9 
Other revenues — .2 
Total Asset Management revenues177.1 118.5 134.0 
Other Operations
   Net investment income30.1 32.2 18.2 
Net realized and unrealized investment gains (losses)188.5 (1.6)50.7 
Net realized and unrealized investment gains (losses) from investment in MediaAlpha27.1 (93.0)(380.3)
Commission revenues13.2 11.5 9.6 
   Other revenues80.5 127.2 90.7 
Total Other Operations revenues339.4 76.3 (211.1)
Total revenues$2,166.7 $1,157.9 $614.4 
See Notes to Consolidated Financial Statements.

F - 3


CONSOLIDATED STATEMENTS OF OPERATIONS (CONTINUED)

Year Ended December 31,
Year Ended December 31,Year Ended December 31,
MillionsMillions202120202019Millions202320222021
Expenses:Expenses:
Financial Guarantee (HG Global/BAM)Financial Guarantee (HG Global/BAM)
Insurance acquisition expenses$8.3 $7.0 $5.7 
Financial Guarantee (HG Global/BAM)
Financial Guarantee (HG Global/BAM)
Acquisition expenses
Acquisition expenses
Acquisition expenses
General and administrative expenses General and administrative expenses57.1 56.8 50.9 
Interest expense
Total Financial Guarantee expensesTotal Financial Guarantee expenses65.4 63.8 56.6 
P&C Insurance and Reinsurance (Ark)
P&C Insurance and Reinsurance (Ark/WM Outrigger)
P&C Insurance and Reinsurance (Ark/WM Outrigger)
P&C Insurance and Reinsurance (Ark/WM Outrigger)
Loss and loss adjustment expensesLoss and loss adjustment expenses314.8 — — 
Insurance and reinsurance acquisition expenses178.0 — — 
Loss and loss adjustment expenses
Loss and loss adjustment expenses
Acquisition expenses
General and administrative expensesGeneral and administrative expenses115.5 — — 
Change in fair value of contingent consideration
Interest expenseInterest expense7.3 — — 
Total P&C Insurance and Reinsurance expensesTotal P&C Insurance and Reinsurance expenses615.6 — — 
Specialty Insurance Distribution (NSM)
General and administrative expenses190.1 176.9 132.2 
Broker commission expense80.2 75.3 64.8 
Change in fair value of contingent consideration1.0 (3.3)2.1 
Amortization of other intangible assets35.2 26.7 19.4 
Loss on assets held for sale28.7 — — 
Interest expense23.3 22.1 16.7 
Total Specialty Insurance Distribution expenses358.5 297.7 235.2 
Asset Management (Kudu)
Asset Management (Kudu)
Asset Management (Kudu)Asset Management (Kudu)
General and administrative expensesGeneral and administrative expenses14.5 11.8 10.1 
Amortization of other intangible assets.3 .3 .2 
General and administrative expenses
General and administrative expenses
Interest expense
Interest expense
Interest expense Interest expense11.7 6.0 .1 
Total Asset Management expensesTotal Asset Management expenses26.5 18.1 10.4 
Marketing Technology (MediaAlpha)
Cost of sales — 40.6 
General and administrative expenses 012.5 
Amortization of other intangible assets — 1.6 
Interest expense — .2 
Total Marketing Technology expenses — 54.9 
Other Operations
Other Operations
Other OperationsOther Operations
Cost of sales Cost of sales69.3 11.3 7.5 
Cost of sales
Cost of sales
General and administrative expenses General and administrative expenses105.7 141.9 122.5 
Amortization of other intangible assets4.3 1.3 .6 
Interest expense Interest expense1.5 1.4 .6 
Total Other Operations expensesTotal Other Operations expenses180.8 155.9 131.2 
Total expensesTotal expenses1,246.8 535.5 488.3 
Pre-tax income (loss) from continuing operationsPre-tax income (loss) from continuing operations(302.0)645.2 405.1 
Income tax (expense) benefit Income tax (expense) benefit(38.6)20.5 (29.3)
Net income (loss) from continuing operationsNet income (loss) from continuing operations(340.6)665.7 375.8 
Net gain (loss) from sale of discontinued operations, net of tax18.7 (2.3).8 
Net income (loss) from discontinued operations, net of tax - NSM Group
Net gain (loss) from sale of discontinued operations, net of tax - NSM Group
Net gain (loss) from sale of discontinued operations, net of tax - Sirius Group
Net income (loss)Net income (loss)(321.9)663.4 376.6 
Net income (loss) attributable to non-controlling interests46.5 45.3 37.9 
Net income (loss)
Net income (loss)
Net (income) loss attributable to noncontrolling interests
Net income (loss) attributable to White Mountains’s common shareholdersNet income (loss) attributable to White Mountains’s common shareholders$(275.4)$708.7 $414.5 
See Notes to Consolidated Financial Statements.

F - 4


CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Year Ended December 31,
Year Ended December 31,Year Ended December 31,
Millions, except for per share amountsMillions, except for per share amounts202120202019Millions, except for per share amounts202320222021
Net income (loss) attributable to White Mountains’s common shareholdersNet income (loss) attributable to White Mountains’s common shareholders$(275.4)$708.7 $414.5 
Other comprehensive income (loss), net of taxOther comprehensive income (loss), net of tax1.9 7.3 (1.4)
Other comprehensive income (loss) from discontinued operations,
net of tax - NSM Group
Net gain (loss) from foreign currency translation from sale of
discontinued operations, net of tax - NSM Group
Comprehensive income (loss)Comprehensive income (loss)(273.5)716.0 413.1 
Comprehensive (income) loss attributable to non-controlling interests.2 (.5)— 
Other comprehensive (income) loss attributable to noncontrolling interests
Comprehensive income (loss) attributable to White Mountains’s common shareholdersComprehensive income (loss) attributable to White Mountains’s common shareholders$(273.3)$715.5 $413.1 
Earnings (loss) per share attributable to White Mountains’s common shareholders:Earnings (loss) per share attributable to White Mountains’s common shareholders:Earnings (loss) per share attributable to White Mountains’s common shareholders:
Basic earnings (loss) per shareBasic earnings (loss) per share
Basic earnings (loss) per share
Basic earnings (loss) per share
Continuing operations
Continuing operations
Continuing operationsContinuing operations$(95.53)$227.72 $130.02 
Discontinued operationsDiscontinued operations6.07 (.75).25 
Total consolidated operationsTotal consolidated operations$(89.46)$226.97 $130.27 
Diluted earnings (loss) per shareDiluted earnings (loss) per share
Continuing operationsContinuing operations$(95.53)$227.72 $130.02 
Continuing operations
Continuing operations
Discontinued operationsDiscontinued operations6.07 (.75).25 
Total consolidated operationsTotal consolidated operations$(89.46)$226.97 $130.27 
Dividends declared and paid per White Mountains’s common shareDividends declared and paid per White Mountains’s common share$1.00 $1.00 $1.00 
See Notes to Consolidated Financial Statements.

F - 5


CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY
White Mountains’s Common Shareholders’ Equity
MillionsCommon Shares and
Paid-in
Surplus
Retained
Earnings
AOCL,
After-tax
TotalNon-controlling
Interests
Total Equity
Balances at December 31, 2018$584.0 $2,264.9 $(5.8)$2,843.1 $(124.9)$2,718.2 
Net income (loss)— 414.5 — 414.5 (37.9)376.6 
Net change in foreign currency translation and other— — (1.4)(1.4)— (1.4)
Comprehensive income (loss)— 414.5 (1.4)413.1 (37.9)375.2 
Dividends declared on common shares— (3.2)— (3.2)— (3.2)
Dividends to non-controlling interests— — — — (2.0)(2.0)
Issuances of common shares2.2 — — 2.2 — 2.2 
Repurchases and retirements of common shares(1.1)(3.8)— (4.9)— (4.9)
BAM member surplus contribution, net of tax— — — — 57.6 57.6 
Amortization of restricted share awards10.6 — — 10.6 — 10.6 
Recognition of equity-based compensation expense of
   subsidiaries
1.5 — — 1.5 — 1.5 
Net contributions and dilution from other
   non-controlling interests
(.9)— — (.9)2.4 1.5 
Acquisition of non-controlling interests— — — — 1.8 1.8 
Deconsolidation of non-controlling interests
   associated with the 2019 MediaAlpha Transaction
— — — — (13.8)(13.8)
Balances at December 31, 2019596.3 2,672.4 (7.2)3,261.5 (116.8)3,144.7 
Net income (loss)— 708.7 — 708.7 (45.3)663.4 
Net change in foreign currency translation and other— — 6.8 6.8 .5 7.3 
Comprehensive income (loss)— 708.7 6.8 715.5 (44.8)670.7 
Dividends declared on common shares— (3.2)— (3.2)— (3.2)
Dividends to non-controlling interests— — — — (2.1)(2.1)
Issuances of common shares1.5 — — 1.5 — 1.5 
Repurchases and retirements of common shares(18.5)(66.7)— (85.2)— (85.2)
BAM member surplus contribution, net of tax— — — — 68.9 68.9 
Amortization of restricted share awards16.6 — — 16.6 — 16.6 
Recognition of equity-based compensation expense of
   subsidiaries
2.3 — — 2.3 .1 2.4 
Net contributions and dilution from other
   non-controlling interests
(3.0)— — (3.0)5.3 2.3 
Acquisition of non-controlling interests— — — — 1.3 1.3 
Balances at December 31, 2020595.2 3,311.2 (.4)3,906.0 (88.1)3,817.9 
Net income (loss)— (275.4)— (275.4)(46.5)(321.9)
Net change in foreign currency translation and other— — 2.1 2.1 — 2.1 
Comprehensive income (loss)— (275.4)2.1 (273.3)(46.5)(319.8)
Dividends declared on common shares— (3.1)— (3.1)— (3.1)
Dividends to non-controlling interests— — — — (2.3)(2.3)
Issuances of common shares1.9 — — 1.9 — 1.9 
Issuances of shares of non-controlling interests— — — — 6.5 6.5 
Repurchases and retirements of common shares(18.9)(88.6)— (107.5)— (107.5)
BAM member surplus contribution, net of tax— — — — 62.2 62.2 
Amortization of restricted share awards14.7 — — 14.7 — 14.7 
Recognition of equity-based compensation expense of
   subsidiaries
3.0 — — 3.0 .5 3.5 
Net contributions and dilution from other
   non-controlling interests
(7.0)13.4 — 6.4 (6.0).4 
Acquisition of non-controlling interests— — — — 230.3 230.3 
Balances at December 31, 2021$588.9 $2,957.5 $1.7 $3,548.1 $156.6 $3,704.7 
White Mountains’s Common Shareholders’ Equity
MillionsCommon Shares and
Paid-in
Surplus
Retained
Earnings
AOCL,
After-tax
TotalNoncontrolling
Interests
Total Equity
Balances as of December 31, 2020$595.2 $3,311.2 $(.4)$3,906.0 $(88.1)$3,817.9 
Net income (loss)— (275.4)— (275.4)(46.5)(321.9)
Other comprehensive income (loss), net of tax— — 1.9 1.9 — 1.9 
Other comprehensive income from discontinued operations, net
   of tax - NSM Group
— — .2 .2 — .2 
Comprehensive income (loss)— (275.4)2.1 (273.3)(46.5)(319.8)
Dividends declared on common shares— (3.1)— (3.1)— (3.1)
Dividends to noncontrolling interests— — — — (2.3)(2.3)
Issuances of common shares1.9 — — 1.9 — 1.9 
Issuances of shares of noncontrolling interest— — — — 6.5 6.5 
Repurchases and retirements of common shares(18.9)(88.6)— (107.5)— (107.5)
BAM member surplus contribution, net of tax— — — — 62.2 62.2 
Amortization of restricted share awards14.7 — — 14.7 — 14.7 
Recognition of equity-based compensation expense of
   subsidiaries
3.0 — — 3.0 .5 3.5 
Net contributions (distributions) and dilution from other
   noncontrolling interests
(7.0)13.4 — 6.4 (6.0).4 
Acquisition of noncontrolling interests— — — — 230.3 230.3 
Balances as of December 31, 2021588.9 2,957.5 1.7 3,548.1 156.6 3,704.7 
Net income (loss)— 792.8 — 792.8 (80.4)712.4 
Other comprehensive income (loss), net of tax— — (2.9)(2.9)(.9)(3.8)
Other comprehensive income from discontinued operations, net
   of tax - NSM Group
— — (5.2)(5.2)— (5.2)
Net gain (loss) from foreign currency translation from sale of discontinued operations, net of tax - NSM Group— — 2.9 2.9 — 2.9 
Comprehensive income (loss)— 792.8 (5.2)787.6 (81.3)706.3 
Dividends declared on common shares— (3.0)— (3.0)— (3.0)
Dividends to noncontrolling interests— — — — (8.0)(8.0)
Issuances of common shares3.0 — — 3.0 — 3.0 
Issuance of shares of noncontrolling interest— — — — 74.6 74.6 
Repurchases and retirements of common shares(90.0)(525.8)— (615.8)— (615.8)
BAM member surplus contribution, net of tax— — — — 81.4 81.4 
Amortization of restricted share awards14.0 — — 14.0 — 14.0 
Recognition of equity-based compensation expense of
   subsidiaries
8.6 — — 8.6 .9 9.5 
Net contributions (distributions) and dilution from other
   noncontrolling interests
14.1 (9.7)— 4.4 (18.6)(14.2)
Acquisition of noncontrolling interests— — — — (17.5)(17.5)
Balances as of December 31, 2022538.6 3,211.8 (3.5)3,746.9 188.1 3,935.0 
Net income (loss)— 509.2 — 509.2 71.7 580.9 
Other comprehensive income (loss), net of tax— — 1.9 1.9 .5 2.4 
Total comprehensive income (loss)— 509.2 1.9 511.1 72.2 583.3 
Dividends declared on common shares— (2.6)— (2.6)— (2.6)
Dividends to noncontrolling interests— — — — (8.9)(8.9)
Issuances of common shares2.1 — — 2.1 — 2.1 
Repurchases and retirements of common shares(5.1)(27.6)— (32.7)— (32.7)
BAM member surplus contribution, net of tax— — — — 72.8 72.8 
Amortization of restricted share awards15.3 — — 15.3 — 15.3 
Recognition of equity-based compensation expense of
   subsidiaries
1.7 — — 1.7 .7 2.4 
Net contributions (distributions) and dilution from other
   noncontrolling interests
(1.3)— — (1.3)5.6 4.3 
Acquisition of noncontrolling interests— — — — (9.4)(9.4)
Balances as of December 31, 2023$551.3 $3,690.8 $(1.6)$4,240.5 $321.1 $4,561.6 
See Notes to Consolidated Financial Statements.

F - 6


CONSOLIDATED STATEMENTS OF CASH FLOWS
Year Ended December 31,
Millions202120202019
Cash flows from operations:
Net income (loss)$(321.9)$663.4 $376.6 
Adjustments to reconcile net income to net cash used for operations:   
Net realized and unrealized investment (gains) losses(134.2)(30.8)(253.2)
Net realized and unrealized investment (gains) losses from MediaAlpha380.3 (686.0)(180.0)
Realized (gain) loss from the 2019 MediaAlpha Transaction — (67.5)
Amortization of restricted share awards14.7 16.6 10.5 
Amortization and depreciation63.6 43.4 29.8 
Deferred income tax expense (benefit)28.8 (36.2)24.8 
Net (gain) loss from sale of discontinued operations, net of tax(18.7)2.3 (.8)
Other operating items:
Net change in reinsurance recoverables(15.1)— — 
Net change in insurance premiums receivable(179.3)— — 
Net change in commissions receivable(7.4)(3.1)(26.8)
Net change in ceded unearned premiums103.1 — — 
Net change in loss and loss adjustment expense reserves198.7 — — 
Net change in premiums payable12.8 1.8 25.1 
Net change in unearned insurance premiums198.6 39.1 35.8 
Net change in deferred acquisition costs(41.8)(5.8)(3.1)
Net change in reinsurance payable(104.2)— — 
Net change in restricted cash15.3 22.1 6.3 
Net change in investments in Kudu Participation Contracts(178.9)(118.3)(118.4)
Net change in other assets and liabilities, net24.2 30.9 20.4 
Net cash provided from (used for) operations38.6 (60.6)(120.5)
Cash flows from investing activities:
Net change in short-term investments54.3 58.7 21.9 
Sales of fixed maturity investments283.6 390.0 334.3 
Maturities, calls and paydowns of fixed maturity investments199.0 180.4 119.3 
Sales of common equity securities176.8 787.9 467.2 
Distributions and redemptions of other long-term investments and settlements of forward contracts106.4 69.9 29.4 
Purchases of other long-term investments(218.0)(76.8)(177.7)
Purchases of common equity securities(203.4)(33.8)(29.8)
Purchases of fixed maturity and convertible investments(1,216.7)(537.7)(539.2)
Purchases of consolidated subsidiaries, net of cash acquired of $52.2, $13.4, and $12.8 and including restricted cash of $0.0, $8.4, $0.0(39.1)(127.3)(258.0)
Release of cash pre-funded/placed in escrow for Ark Transaction646.3 (646.3)— 
Other investing activities, net2.5 (.4)(27.3)
Net cash provided from (used for) investing activities(208.3)64.6 (59.9)
Cash flows from financing activities:
Draw down of debt and revolving lines of credit436.7 84.6 206.4 
Repayment of debt and revolving lines of credit(154.7)(4.5)(22.9)
Cash dividends paid to the Company’s common shareholders(3.1)(3.2)(3.2)
Acquisition of subsidiary shares by non-controlling interest shareholders6.5 — — 
Common shares repurchased(100.1)(78.5)— 
Acquisition of subsidiary shares from non-controlling interest shareholders(.4)(.5)(21.1)
Proceeds from issuance of shares to non-controlling interest shareholders — 62.7 
Net contributions from non-controlling interest shareholders1.5 1.7 (26.2)
Contingent considerations related to acquisition of subsidiaries (7.0)(7.6)
Capital contributions from BAM members62.2 68.9 54.6 
Fidus Re premium payments(8.8)(3.0)(3.0)
Other financing activities, net(22.2)(9.5)(9.2)
Net cash provided from (used for) financing activities217.6 49.0 230.5 
Effect of exchange rate changes on cash.2 (2.8).6 
Net change in cash during the period - continuing operations, including the effect of exchange rate changes48.1 50.2 50.7 
Cash balance at beginning of year (includes restricted cash balances of $78.4, $56.3, $50.0)211.2 161.0 110.3 
Cash balance at end of year (includes restricted cash balances of $93.7, $78.4, $56.3 ad excludes cash held for sale of $0.7, $0.0 and $0.0)$259.3 $211.2 $161.0 
Year Ended December 31,
Millions202320222021
Cash flows from operations:
Net income (loss)$580.9 $712.4 $(321.9)
Adjustments to reconcile net income to net cash provided from (used for) operations:   
Net realized and unrealized investment (gains) losses(407.1)98.5 (134.2)
Net realized and unrealized investment (gains) losses from investment in MediaAlpha(27.1)93.0 380.3 
Deferred income tax expense (benefit)(46.9)12.9 34.7 
Amortization of restricted share awards15.3 14.0 14.7 
Amortization (accretion) and depreciation(17.8)4.3 21.6 
Change in fair value of contingent consideration - Ark48.7 17.3 5.5 
Net (income) loss from discontinued operation, net of tax - NSM Group (16.4)22.6 
Net (gain) loss from sale of discontinued operations, net of tax - NSM Group (886.8)— 
Net (gain) loss from sale of discontinued operations, net of tax - Sirius Group— — (18.7)
Other operating items:
Net change in reinsurance recoverables153.3 (79.8)88.0 
Net change in insurance premiums receivable(67.0)(127.8)(179.3)
Net change in deferred acquisition costs and value of in-force business acquired(22.2)(21.9)(41.8)
Net change in loss and loss adjustment expense reserves308.6 401.8 198.7 
Net change in unearned insurance premiums147.9 159.3 198.6 
Net change in reinsurance payable(170.0)(173.0)(104.2)
Contributions to Kudu’s Participation Contracts(163.8)(99.8)(223.4)
Proceeds from Kudu’s Participation Contracts sold75.2 137.5 44.4 
Net other operating activities(3.9)80.8 10.7 
Net cash provided from (used for) operations - continuing operations404.1 326.3 (3.7)
Net cash provided from (used for) operations - NSM Group discontinued operations (Note 20)
 38.7 42.3 
Net cash provided from (used for) operations404.1 365.0 38.6 
Cash flows from investing activities:
Net change in short-term investments(495.8)(455.1)59.8 
Sales of fixed maturity investments195.1 188.7 286.3 
Maturities, calls and paydowns of fixed maturity investments266.5 198.5 199.0 
Sales of common equity securities and investment in MediaAlpha261.6 — 176.8 
Distributions and redemptions of other long-term investments116.9 115.4 106.4 
Proceeds from the sale of NSM Group and Other Operating Businesses,
   net of cash sold of $0.8, $144.4 and $0.0
17.3 1,392.0 — 
Release of cash pre-funded/placed in escrow for Ark Transaction — 646.3 
Release of cash (pre-funding) for ILS funds managed by Elementum70.0 (70.0)— 
Purchases of fixed maturity investments(592.7)(585.5)(1,219.4)
Purchases of common equity securities(114.2)(424.5)(203.4)
Purchases of other long-term investments(265.2)(178.8)(218.0)
Purchases of consolidated subsidiaries, net of cash acquired of $0.0, $0.3, and $52.2 (67.9)10.6 
Net other investing activities(3.4)(4.4)3.8 
Net cash provided from (used for) investing activities - continuing operations(543.9)108.4 (151.8)
Net cash provided from (used for) investing activities - NSM Group discontinued operations (Note 20)
 7.1 (56.5)
Net cash provided from (used for) investing activities(543.9)115.5 (208.3)
Cash flows from financing activities:
Draw down of debt and revolving lines of credit12.4 213.8 401.7 
Repayment of debt and revolving lines of credit(25.7)(56.7)(120.1)
Cash dividends paid to common shareholders(2.6)(3.0)(3.1)
Repurchases and retirements of common shares(32.7)(615.8)(107.5)
Net contributions from (distributions to) other noncontrolling interests(3.0)(21.6).7 
Net (contributions to) distributions from discontinued operations 11.6 — 
Issuances of shares to noncontrolling interests 74.6 6.5 
BAM member surplus contributions72.8 81.4 62.2 
Fidus Re premium payments(13.6)(10.1)(8.8)
Net other financing activities(.4)(1.6)(13.0)
Net cash provided from (used for) financing activities - continuing operations7.2 (327.4)218.6 
Net cash provided from (used for) financing activities - NSM Group discontinued operations (Note 20)
 (17.5)(1.0)
Net cash provided from (used for) financing activities – continuing operations7.2 (344.9)217.6 
Net change in cash during the period - continuing operations(132.6)107.3 63.1 
Cash balance at beginning of year (includes restricted cash balances of $18.3, $4.5 and $0.0 and excludes
   discontinued operations cash balances $0.0, $111.6 and $126.6)
255.0 147.7 84.6 
Cash balance at end of year (includes restricted cash balances of $0.7, $18.3 and $4.5 and excludes
   discontinued operations cash balances of $0.0, $0.0 and $111.6
$122.4 $255.0 $147.7 
See Notes to Consolidated Financial Statements.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
Note 1. Basis of Presentation and Significant Accounting Policies

Basis of Presentation

White Mountains Insurance Group, Ltd. (the “Company” or the “Registrant”) is an exempted Bermuda limited liability company whose principal businesses are conducted through its subsidiaries and other affiliates. The Company’s headquarters is located at 26 Reid Street, Hamilton, Bermuda HM 11, its principal executive office is located at 23 South Main Street, Suite 3B, Hanover, New Hampshire 03755-2053 and its registered office is located at Clarendon House, 2 Church Street, Hamilton, Bermuda HM 11. The Company’s website is located at www.whitemountains.com. The information contained on White Mountains’s website is not incorporated by reference into, and is not a part of, this report.
The accompanying consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and include the accounts of the Company, its subsidiaries (collectively with the Company, “White Mountains”) and other entities required to be consolidated under GAAP. Certain amounts in the prior period financial statements have been reclassified to conform to the current presentation.
The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Consolidation Principles    
Under GAAP, the Company is required to consolidate any entity in which it holds a controlling financial interest. A controlling financial interest is usually in the form of an investment representing the majority of the subsidiary’s voting interests. However, a controlling financial interest may also arise from a financial interest in a variable interest entity (“VIE”) through arrangements that do not involve ownership of voting interests. The Company consolidates a VIE if it determines that it is the primary beneficiary. The primary beneficiary is defined as the entity who holds a variable interest that gives it both the power to direct the VIE’s activities that most significantly impact its economic performance and the obligation to absorb losses of, or the right to receive returns from, the VIE that could potentially be significant to the VIE. See Note 1817 — “Variable Interest Entities”.
Intercompany transactions have been eliminated in consolidation. Certain amounts in the prior period financial statements have been reclassified to conform to the current presentation.

Use of Estimates
The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Reportable Segments
As of December 31, 2023, White Mountains conducted its operations through three reportable segments: (1) HG Global/BAM, (2) Ark/WM Outrigger, and (3) Kudu, with our remaining operating businesses, holding companies and other assets included in Other Operations. White Mountains has determinedmade its reportable segmentssegment determination based on consideration of the following criteria: (i) the nature of the underlying businesses,business activities of each of the Company’s subsidiaries and affiliates; (ii) the manner in which the Company’s subsidiaries and affiliates are organizedorganized; (iii) the existence of primary managers responsible for specific subsidiaries and managedaffiliates; and (iv) the organization of the financial information provided to the Company’s chief operating decision maker to assess performance and make decisions regarding allocation of resources. As of December 31, 2021, White Mountains’s reportable segments were HG Global/BAM, Ark, NSM, Kudu and Other Operations. On February 26, 2019, MediaAlpha, Inc. (“MediaAlpha”), completed the sale of a significant minority stake to Insignia Capital Group in connection with a recapitalization and cash distribution to existing equityholders (the “2019 MediaAlpha Transaction”). MediaAlpha also repurchased a portion of the holdings of existing equityholders. White Mountains deconsolidated MediaAlpha as a result of the 2019 MediaAlpha Transaction, and consequently it was no longer a reportable segment. White Mountains’s consolidated statement of comprehensive income (loss)makers and its segment disclosures include MediaAlpha’s resultsBoard of operations through the date of the 2019 MediaAlpha Transaction.Directors. See Note 2 — Significant Transactions” and Note 1615Segment Information”.

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The HG Global/BAM segment consists of HG Global Ltd. and its wholly-owned subsidiaries (“HG(collectively, “HG Global”) and the consolidated results of Build America Mutual Assurance Company (“BAM”) (collectively with HG Global, “HG Global/BAM”). BAM is the first and only mutual municipal bond insurance company in the United States. By insuring the timely payment of principal and interest, BAM provides market access to, and lowers interest expense for, issuers of municipal bonds used to finance essential public purpose projects, such as schools, utilities and transportation facilities. BAM is owned by and operated for the benefit of its members, the municipalities that purchase BAM’s insurance for their debt issuances. HG Global was established to fund the startup of BAM and, through its reinsurance subsidiary HG Re Ltd. (“HG Re”), to provide up to 15%-of-par, first loss reinsurance protection for policies underwritten by BAM. HG Global, together with its subsidiaries, funded the initial capitalization of BAM through the purchase of $503.0 million of surplus notes issued by BAM (the “BAM Surplus Notes”). As of December 31, 20212023 and 2020,2022, White Mountains owned 96.9% of HG Global's preferred equity and 88.4% of its common equity. White Mountains does not have an ownership interest in BAM. However, White Mountains is required to consolidate BAM’s results in its financial statements because BAM is a VIE for which White Mountains is the primary beneficiary. BAM’s results are all attributed to non-controllingnoncontrolling interests.
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The ArkArk/WM Outrigger segment consists of Ark Insurance Holdings Limited and its subsidiaries (collectively, “Ark”) and Outrigger Re Ltd. Segregated Account 2023-1 (“WM Outrigger Re”) (collectively with Ark, “Ark/WM Outrigger”). Ark is a specialty property and casualty insurance and reinsurance company that offers a wide range of niche insurance and reinsurance products, including property, specialty, marine & energy, specialty,casualty and accident & health and casualty.health. Ark underwrites select coverages through Lloyd’s Syndicates 4020 and 3902 (the “Syndicates”) and its two major subsidiaries in the United Kingdom and Bermuda. On January 1, 2021,wholly-owned subsidiary Group Ark Insurance Limited (“GAIL”). White Mountains acquired a controlling ownership interest in Ark on January 1, 2021 (the “Ark Transaction”). See Note 2 — “Significant Transactions”. As of December 31, 2021,2023 and 2022, White Mountains owned 72.0% of Ark on a basic shares outstanding basis (63.0%(61.9% and 63.0% after taking account of management’s equity incentives). The remaining shares are owned by current and former employees. In the future, management rollover shareholders could earn additional shares in Ark if and to the extent that White Mountains achieves certain thresholds for its multiple of invested capital return thresholds.return. If fully earned, these additional shares would represent 12.5% of the shares outstanding at closing.
NSM For the years of account prior to the Ark Transaction, a significant proportion of the Syndicates’ underwriting capital was provided by third-party insurance and reinsurance groups (“TPC Providers”) using whole account reinsurance contracts with Ark’s corporate member. For the years of account subsequent to the Ark Transaction, Ark is no longer using TPC Providers to provide underwriting capital for the Syndicates. Captions within results of operations and other comprehensive income are shown net of amounts relating to the TPC Providers’ share of the Syndicates’ results, including investment results. During the fourth quarter of 2022, Ark sponsored the formation of Outrigger Re Ltd., a full-service managing general agent (“MGA”)Bermuda company registered as a special purpose insurer and program administrator with delegated binding authorities for specialtysegregated accounts company, to provide collateralized reinsurance protection on Ark’s Bermuda global property and casualty insurance. The company places insurancecatastrophe excess of loss portfolio written in niche sectors such as specialty transportation, real estate, social services and pet. Onthe 2023 underwriting year. Outrigger Re Ltd. issued non-voting redeemable preference shares on behalf of its insurance carrier partners, NSM typically manages all aspects of the placement process, including product development, marketing, underwriting, policy issuance and claims. NSM earns commissions based on the volume and profitability of the insurance that it places. NSM does not take insurance risk. On May 11, 2018,four segregated accounts to White Mountains acquired a controlling ownership interestand unrelated third-party investors. White Mountains consolidates the results of its segregated account, WM Outrigger Re, in NSM.its financial statements. See Note 2 — “Significant Transactions”Transactions.”. As of December 31, 20212023 and 2020,2022, White Mountains owned 96.5% and 96.6%100.0% of WM Outrigger Re’s preferred equity. During the basic units outstandingfourth quarter of NSM (87.3% and 89.6% on a fully diluted, fully converted basis).2023, Ark renewed Outrigger Re Ltd.in the 2024 underwriting year.
The Kudu segment consists of Kudu Investment Management, LLC and its subsidiaries (collectively, “Kudu”). Kudu provides capital solutions for boutique asset and wealth managers for a variety of purposes including generational ownership transfers, management buyouts, acquisition and growth finance and legacy partner liquidity. Kudu also provides strategic assistance to investees from time to time. Kudu’s capital solutions typicallygenerally are structured as minority preferred equity stakes with distribution rights, generallytypically tied to gross revenues and designed to generate immediate strong, stable cash yields. On April 4, 2019, White Mountains acquired a controlling ownership interest in Kudu (the “Kudu Transaction”). See Note 2“Significant Transactions”. As of December 31, 20212023 and 2020,2022, White Mountains owned 99.3%89.6% and 99.3%89.3% of the basic units outstanding of Kudu (84.7%(76.3% and 85.4%76.1% on a fully diluted, fully convertedfully-diluted/fully-converted basis).
The Other Operations segmentWhite Mountains’s other operations consists of the Company and its wholly-owned subsidiary, White Mountains Capital, LLC (“WM Capital”), its other intermediate holding companies, its wholly-owned investment management subsidiary, White Mountains Advisors LLC (“WM Advisors”), investment assets managed by WM Advisors, its interests in MediaAlpha, (for periods after the 2019 MediaAlpha Transaction)Inc. (“MediaAlpha”), PassportCard Limited (“PassportCard”) and DavidShield Life Insurance Agency (2000) Ltd. (“DavidShield”) (collectively, “PassportCard/DavidShield”), Elementum Holdings LP (“Elementum”), Kudu (for periods prior to the Kudu Transaction), certain other consolidated and unconsolidated entities (“Other Operating Businesses”) and certain other assets.assets (“Other Operations”).
The MediaAlpha segment consisted of QL Holdings LLC and its wholly-owned subsidiary QuoteLab, LLC (collectively
“MediaAlpha”). MediaAlpha is a marketing technology company. It operates a transparent and efficient customer acquisition technology platform that facilitates real-time transactions between buyers and sellers of consumer referrals (i.e., clicks, calls and leads), primarily in the property & casualty, health and life insurance verticals. MediaAlpha generates revenue by earning a fee for each consumer referral sold on its platform. A transaction becomes payable only on a qualifying consumer action, and is not contingent on the sale of a product to the consumer. MediaAlpha’s core verticals are property & casualty insurance, health insurance and life insurance.On October 25, 2023, White Mountains deconsolidated MediaAlpha as a resultannounced the launch of the 2019 MediaAlpha TransactionWhite Mountains Partners LLC (“WTM Partners”), which will acquire businesses in non-insurance, non-financial services sectors including essential services, light industrial and stopped reporting it as a segment. Following the 2019 MediaAlpha Transaction,specialty consumer. White Mountains’s non-controllingMountains expects to deploy up to $500 million of equity interest in MediaAlpha was accounted for at fair valuecapital through WTM Partners over time. WTM Partners is included within other long-term investments. See Other Operations.
Note 2 — “Significant Transactions”.

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Held for Sale and Discontinued Operations
White Mountains recognizes assets and liabilities classified as held for sale at the lower of carrying value on the date the asset is initially classified as held for sale or fair value less costs to sell. At the time of reclassification to held for sale, White Mountains ceases recognizing depreciation and amortization on assets held for sale. The results of operations of a business that has either been disposed of or are classified as held for sale are reported in discontinued operations if the disposal of the business represents a strategic shift that has (or will have) a major effect on White MountainsMountains’s operations and financial results.
On August 1, 2022, White Mountains Holdings (Luxembourg) S.à r.l. (“WTM Holdings Seller”), an indirect wholly-owned
subsidiary of White Mountains, completed the sale of White Mountains Catskill Holdings, Inc. and NSM Insurance HoldCo, LLC (“NSM”) (collectively with White Mountains Catskill Holdings, Inc., the “NSM Group”) to Riser Merger Sub, Inc., an affiliate of The Carlyle Group Inc. (the “NSM Transaction”), pursuant to the terms of the securities purchase agreement, dated as of May 9, 2022. See Note 212 — “Significant Transactions.” NSM is a full-service managing general agent (“MGA”) and program administrator with delegated binding authorities for specialty property and casualty insurance.
As a result of the NSM Transaction, the assets and liabilities of NSM Group have been presented in the balance sheet as held for sale for periods prior to the closing of the transaction, and the results of operations for NSM Group have been classified as discontinued operations in the statements of operations and comprehensive income through the closing of the transaction. Prior period amounts have been reclassified to conform to the current period’s presentation. See Note 20 — “Held for Sale and Discontinued Operations”.Operations.”

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Significant Accounting Policies

Investment Securities
As of December 31, 20212023 and 2020,2022, White Mountains’s invested assets consisted of securities and other investments held for general investment purposes. White Mountains’s portfolio of investment securities held for general investment purposes consists of fixed maturity investments, short-term investments, common equity securities, its investment in MediaAlpha and other long-term investments. Short-term investments consist of interest-bearing money market funds, certificates of deposit and other fixed maturity securities, which at the time of purchase, mature or become available for use within one year. Short-term investments are carried at fair value, which approximated amortized or accreted cost as of December 31, 2023 and 2022. Other long-term investments consist primarily of unconsolidated entities, including noncontrolling equity interests in the form of revenue and earnings participation contracts held for general investment purposesat Kudu (“Participation Contracts”), private equity funds and hedge funds, a bank loan fund, Lloyd’s of London (“Lloyd’s”) trust deposits, insurance-linked securities (“ILS”) funds and private debt instruments.
White Mountains’s portfolio of fixed maturity investments, including those within short-term investments, are generally classified as trading securities. Trading securities and are reported at fair value as of the balance sheet date. White Mountains’s portfolio of common equity securities, its investment in MediaAlpha and other long-term investments are measured at fair value. White Mountains has taken the fair value option for its equity method eligible investments.
Changes in net unrealized investment gains (losses) are reported pre-tax in revenues. Realized investment gains (losses) are accounted for using the specific identification method and are reported pre-tax in revenues. Premiums and discounts on all fixed maturity investments are amortized and accreted to income over the anticipated life of the investment.
Short-term investments consist Income on mortgage and asset-backed securities is recognized using an effective yield based on anticipated prepayments and the estimated economic life of interest-bearing money market funds, certificates of depositthe securities. When actual prepayments differ significantly from anticipated prepayments, the estimated economic life is recalculated, and other securities, which at the time of purchase, matureremaining unamortized premium or become available for use within one year.  Short-term investments are carried at fair value, which approximateddiscount is amortized or accreted cost as of December 31, 2021 and 2020.
White Mountains’s invested assets that are measured at fair value include fixed maturity investments, common equity securities, its investment in MediaAlpha, and other long-term investments, that consists primarily of unconsolidated entities, including non-controlling equity interests inprospectively over the form of revenue and earnings participation contracts (“Kudu’s Participation Contracts”), a bank loan fund, private equity funds, hedge funds, Lloyd’s trust deposits, insurance-linked securities (“ILS”) funds and private debt instruments. Whenever possible, White Mountains estimates fair value using valuation methods that maximize the use of quoted prices and other observable inputs.remaining economic life.
Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants (an exit price) at a particular measurement date. Fair value measurements are categorized into a hierarchy that distinguishes between inputs based on market data from independent sources (observable inputs) and a reporting entity’s internal assumptions based upon the best information available when external market data is limited or unavailable (unobservable inputs). Quoted prices in active markets for identical assets have the highest priority (“Level 1”), followed by observable inputs other than quoted prices including prices for similar but not identical assets or liabilities (“Level 2”), and unobservable inputs, including the reporting entity’s estimates of the assumptions that market participants would use, having the lowest priority (“Level 3”).
Assets and liabilities carried at fair value include substantially all of White Mountains’s investment portfolio and derivative instruments, both exchange-traded and over the counter instruments. Valuation of assets and liabilities measured at fair value require management to make estimates and apply judgment to matters that may carry a significant degree of uncertainty. In determining its estimates of fair value, estimates, White Mountains uses a variety of valuation approaches and inputs. Whenever possible, White Mountains estimates fair value using valuation methods that maximize the use of quoted market prices or other observable inputs. Where appropriate, assets and liabilities measured at fair value have been adjusted for the effect of counterparty credit risk.
White Mountains uses outside pricing services and brokers to assist in determining fair values. The outside pricing services White Mountains uses have indicated that they will only provide prices where observable inputs are available. As of December 31, 2021, approximately 68% of the investment portfolio recorded at fair value was priced based upon quoted market prices or other observable inputs.
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Level 1 Measurements
Investments valued using Level 1 inputs include White Mountains’s fixed maturity investments, primarily investments in U.S. Treasuries and short-term investments, which include U.S. Treasury Bills, common equity securities, and its investment in MediaAlpha following the initial public offering of MediaAlpha IPO.on October 30, 2020 (the “MediaAlpha IPO”). For investments in active markets, White Mountains uses the quoted market prices provided by outside pricing services to determine fair value.

Level 2 Measurements
Investments valued using Level 2 inputs include fixed maturity investments which have been disaggregated into classes, including debt securities issued by corporations, municipal obligations, and mortgage and asset-backed securities.securities and collateralized loan obligations. Investments valued using Level 2 inputs also include certain passive exchange tradedinternational listed equity funds, (“ETFs”) that track U.S. stock indices such as the S&P 500 Index, but are traded on foreign exchanges, which White Mountains values using the fund manager’s published net asset value per share (“NAV”) to account for the difference in market exchange close times.

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In circumstances where quoted market prices are unavailable or are not considered reasonable, White Mountains estimates the fair value using industry standard pricing methodologies and observable inputs such as benchmark yields, reported trades, broker-dealer quotes, issuer spreads, benchmark securities, bids, offers, credit ratings, prepayment speeds, reference data including research publications and other relevant inputs. Given that many fixed maturity investments do not trade on a daily basis, the outside pricing services evaluate a wide range of fixed maturity investments by regularly drawing parallels from recent trades and quotes of comparable securities with similar features. The characteristics used to identify comparable fixed maturity investments vary by asset type and take into account market convention.
White Mountains’s process to assess the reasonableness of the market prices obtained from the outside pricing sources covers substantially all of its fixed maturity investments and includes, but is not limited to, the evaluation of pricing methodologies and a review of the pricing services’ quality control procedures on at least an annual basis, a comparison of its invested asset prices obtained from alternate independent pricing vendors on at least a semi-annual basis, monthly analytical reviews of certain prices and a review of the underlying assumptions utilized by the pricing services for select measurements on an ad hoc basis throughout the year. White Mountains also performs back-testing of selected investment sales activity to determine whether there are any significant differences between the market price used to value the security prior to sale and the actual sale price of the security on an ad-hoc basis throughout the year. Prices provided by the pricing services that vary by more than $0.5 million and 5% from the expected price based on these assessment procedures are considered outliers, as are prices that have not changed from period to period and prices that have trended unusually compared to market conditions. In circumstances where the results of White Mountains’s review process does not appear to support the market price provided by the pricing services, White Mountains challenges the vendor provided price. If White Mountains cannot gain satisfactory evidence to support the challenged price, White Mountains will rely upon its own internal pricing methodologies to estimate the fair value of the security in question.
The valuation process described above is generally applicable to all of White Mountains’s fixed maturity investments. The techniques and inputs specific to asset classes within White Mountains’s fixed maturity investments for Level 2 securities that use observable inputs are as follows:

Debt Securities Issued by Corporations
The fair value of debt securities issued by corporations is determined from a pricing evaluation technique that uses information from market sources and integrates relative credit information, observed market movements, and sector news. Key inputs include benchmark yields, reported trades, broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including sector, coupon, credit quality ratings, duration, credit enhancements, early redemption features and market research publications.

Municipal Obligations
The fair value of municipal obligations is determined from a pricing evaluation technique that uses information from market makers, brokers-dealers, buy-side firms, and analysts along with general market information. Key inputs include benchmark yields, reported trades, issuer financial statements, material event notices and new issue data, as well as broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including type, coupon, credit quality ratings, duration, credit enhancements, geographic location and market research publications.

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Mortgage and Asset-Backed Securities and Collateralized Loan Obligations
The fair value of mortgage and asset-backed securities and collateralized loan obligations is determined from a pricing evaluation technique that uses information from market sources and leveraging similar securities. Key inputs include benchmark yields, reported trades, underlying tranche cash flow data, collateral performance, plus new issue data, as well as broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including issuer, vintage, loan type, collateral attributes, prepayment speeds, default rates, recovery rates, cash flow stress testing, credit quality ratings and market research publications.

Level 3 Measurements
Fair value estimates for investments that trade infrequently and have few or no quoted market prices or other observable inputs are classified as Level 3 measurements. Investments valued using Level 3 fair value estimates are based upon unobservable inputs and include investments in certain fixed maturity investments, common equity securities and other long-term investments where quoted market prices or other observable inputs are unavailable or are not considered reliable or reasonable.
Level 3 valuations are generated from techniques that use assumptions not observable in the market. These unobservable inputs reflect White Mountains’s assumptions of what market participants would use in valuing the investment. In certain circumstances, investment securities may start out as Level 3 when they are originally issued, but as observable inputs become available in the market, they may be reclassified to Level 2. Transfers of securities between levels are based on investments held as of the beginning of the period.
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Other Long-Term Investments
As of December 31, 2021, White Mountains owned a portfolio of other long-term investments valued at $1.4 billion, that consisted primarily of unconsolidated entities, including Kudu’s Participation Contracts, a bank loan fund, private equity funds, a hedge fund, Lloyd’s trust deposits, ILS funds and private debt instruments. As of December 31, 2021, $890.62023, $1,138.2 million of White Mountains’s other long-term investments, thatwhich consisted primarily of unconsolidated entities, including Kudu’s Participation Contracts and private debt instrumentsPassportCard/DavidShield were classified as Level 3 investments in the GAAP fair value hierarchy, were not actively traded in public markets and did not have readily observable market prices.hierarchy. The determination of the fair value of these securities involves significant management judgment, and the use of valuation modelsanalyses and assumptions that are inherently subjective and uncertain. As of December 31, 2021, $482.5 million of White Mountains’s other long-term investments, consisting of a bank loan fund, private equity funds, a hedge fund, Lloyd’s trust deposits and ILS funds, were valued at fair value using NAV as a practical expedient. Investments for which fair value is measured at NAV using the practical expedient are not classified within the fair value hierarchy.
White Mountains may use a variety of valuation techniques to determine fair value depending on the nature of the investment, including a discounted cash flow analysis, market multiple approach, cost approach and/or liquidation analysis. On an ongoing basis, White Mountains also considers qualitative changes in facts and circumstances, which may impact the valuation of its unconsolidated entities, including economic and market changes in relevant industries, changes to the entity’s capital structure, business strategy and key personnel, and any recent transactions relating to the unconsolidated entity.transactions. On a quarterly basis, White Mountains evaluates the most recent qualitative and quantitative information of the business and completes a fair valuation analysis for all other long-term investments classified as Level 3 other long-term investments. Periodically, and at least on an annual basis, White Mountains uses a third-party valuation firm to complete an independent valuation analysis of significant unconsolidated entities.

Other Long-term Investments - NAV
As of December 31, 2023, $833.8 million of White Mountains’s portfolio of other long-term investments, includes investments inwhich consisted of private equity funds and hedge funds, a bank loan fund, private equity funds, hedge funds, Lloyd’s trust deposits and ILS funds, which arewere valued at fair value using NAV as a practical expedient. Investments for which fair value is measured using NAV as a practical expedient are not classified within the fair value hierarchy.
White Mountains employs a number of procedures to assess the reasonableness of the fair value measurements for other long-term investments measured at NAV, including obtaining and reviewing periodicinterim unaudited and annual audited annual financial statements as well as periodically discussing the valuations and methodologies used to value the underlying investments of each fund’s pricingfund with the fund manager.managers. However, since the fund managers do not provide sufficient information to evaluate the pricing methods and inputs for each underlying investment, White Mountains considers the valuation inputs to be unobservable. The fair value of White Mountains’s other long-term investments measured at NAV are generally determined using the fund manager’s NAV. In the event that White Mountains believes the fair value of the fund differs from the NAV reported by the fund manager due to illiquidity or other factors, White Mountains will adjustmake an adjustment to the reported NAV to more appropriately represent the fair value of its other long-term investment.

Cash and Restricted Cash
Cash includes amounts on hand and demand deposits with banks and other financial institutions. Amounts presented in the statement of cash flows are shown net of balances acquired and sold in the purchase or sale of the Company’s consolidated subsidiaries.
Cash balances that are not immediately available for general corporate purposes, including fiduciary accounts held by NSM on behalf of insurance carriers and the interest reserve account that Kudu maintains under its credit facility,operating purposes are classified as restricted.

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Derivatives
From time to time, White Mountains holds derivative financial instruments for risk management purposes. White Mountains recognizes all derivatives as either assets or liabilities, measured at fair value, on its consolidated balance sheet. Changes in the fair value of derivative instruments that meet the criteria for hedge accounting are recognized in other comprehensive income (loss) and reclassified into current period pre-tax income (loss) when the hedged items are recognized therein. Changes in the fair value of derivative instruments that do not meet the criteria for hedge accounting are recognized in current period pre-tax income (loss).
As of December 31, 2021 and 2020, White Mountains holds interest rate cap derivative instruments that do not meet the criteria for hedge accounting. As of December 31, 2021 and 2020,2023, White Mountains holds an interest rate swapcap derivative instrument that meetsdoes not meet the criteria for hedge accounting. See Note 9 — “Derivatives”.

Municipal Bond Guarantee Insurance
All of the contracts issued by BAM are accounted for as insurance contracts under ASC 944-605, Financial Guarantee Insurance Contracts. For capital appreciation bonds, par is adjusted to the estimated equivalent par value for current interest paying bonds. See Note 10 — “Municipal Bond Guarantee Insurance”.
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Premiums are generally received upfront and an unearned premium revenue liability, equal to the amount of the premium received, is established at contract inception. Premium revenues are recognized in revenue over the period of the contracts in proportion to the amount of insurance protection provided using a constant rate. The constant rate is calculated based on the relationship between the par outstanding in a given reporting period compared with the sum of each of the par amounts outstanding for all periods.
Insurance premiums receivable represents amounts due from customers for municipal bond insurance policies. Installment premiums are measured at the present value of contractual premiums, discounted at the risk-free rate, which is set at the inception of the insurance contract.
Deferred acquisition costs represent commissions, premium taxes, excise taxes and other costs which are directly attributable to and vary with the production of business. These costs are deferred and amortized to the extent they relate to successful contract acquisitions over the applicable premium recognition period as acquisition expenses. Deferred acquisition costs are limited to the amount expected to be recovered from future earned premiums and anticipated investment income. A premium deficiency is recognized if the sum of expected loss and loss adjustment expenses (“LAE”), expected dividends to policyholders, unamortized acquisition costs, and maintenance costs exceeds related unearned premiums and anticipated investment income. A premium deficiency is recognized by charging any unamortized acquisition costs to expense to the extent required in order to eliminate the deficiency. If the premium deficiency exceeds unamortized acquisition costs then a liability is accrued for the excess deficiency.
BAM’s obligation for outstanding contracts consists of the unearned premium reserve and any loss reserves. Loss reserves are recorded only to the extent that the present value of the expected amount of any lossespayments projected to be paid,made by BAM, net of any expected recoveries, exceeds the associated unearned premium reserve. As of December 31, 20212023 and 2020,2022, BAM did not have any loss or loss adjustment expense reserves.

Property and Casualty Insurance and Reinsurance
Ark writes a diversified portfolio of reinsurance and insurance products, including property, specialty, marine & energy, specialty,casualty and accident & health and casualty, through its Lloyd’s Syndicates 4020 and 3902 (the “Syndicates”) and its wholly-owned subsidiary Group Ark Insurance Limited (“GAIL”).health.
Ark accounts for insurance and reinsurance policies that it writes in accordance with ASC 944, Financial Services - Insurance. Ark’s premiums written comprise premiums on insurance contracts incepted during the year as well as premium adjustments related to prior underwriting years. Insurance premiums are recognized as revenues over the loss exposure or coverage period in proportion to the level of insurance protection provided.period. In most cases, premiums are earned ratably over the term of the contract, with unearned premiums calculated on a monthly pro-rata basis. Catastrophe premiums are earned in proportion to the level of insurance protection provided. Premiums earned are presented net of amounts ceded to reinsurers. Insurance premiums receivable, representing amounts due from insureds, are presented net of an allowance for uncollectible premiums, including expected credit losses. The allowance is based upon Ark’s ongoing review of amounts outstanding, historical loss data, including delinquencies and write-offs, current and forecasted economic conditions and other relevant factors. Credit risk is partially mitigated by Ark’s ability to cancel the policy if the policyholder does not pay the premium.
Deferred acquisition costs comprise commission and brokerage fees and taxes which are directly attributable to and vary with the production of business. These costs are deferred and amortized to the extent they relate to successful contract acquisitions over the applicable premium recognition period as insurance and reinsurance acquisition expenses. Deferred acquisition costs are limited to the amount expected to be recovered from future earned premiums and anticipated investment income. A premium deficiency is recognized if the sum of expected loss and LAE, expected dividends to policyholders, unamortized acquisition costs and maintenance costs exceeds related unearned premiums and anticipated investment income. A premium deficiency is recognized by charging any unamortized acquisition costs to expense to the extent required in order to eliminate the deficiency. If the premium deficiency exceeds unamortized acquisition costs, then a liability is accrued for the excess deficiency.
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Losses and LAE are charged against income as incurred. Unpaid losses and LAE, including estimates for amounts incurred but not reported (“IBNR”), are based on estimates of the ultimate costs of settling claims, including the effects of inflation and other societal and economic factors. Unpaid loss and LAE reserves represent management’s best estimate of ultimate losses and LAE, net of estimated salvage and subrogation recoveries, if applicable. Such estimates are regularly reviewed and updated, and any resulting adjustments are reflected in current results of operations. The process of estimating loss and LAE involves a considerable degree of judgment by management, and the ultimate amount of expense to be incurred could be considerably greater than or less than the amounts currently reflected in the financial statements. See Note 5 “Loss and Loss Adjustment Expense Reserves”.
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As part of its enterprise risk management function, Ark purchases reinsurance for risk mitigation purposes. Ark utilizes reinsurance and retrocessionretrocessional agreements to reduce earnings volatility, protect capital, limit its exposure to risk concentration and accumulation of loss and to manage within its overall internal risk tolerances or those set and agreed by regulators, ratings agencies and Lloyd’s. Ark also enters into reinsurance and retrocessionretrocessional agreements to reduce its liability on individual risks and enable it to underwrite policies with higher limits where Ark believes this has a broader business benefit. Ark seeks to protect its downside risk from catastrophes and large loss events by purchasing reinsurance, including excess of loss protections, aggregate covers and industry loss warranties. Ark also considers alternative structures such as collateralized reinsurance, retrocessional reinsurance and catastrophe bonds. The purchase of reinsurance does not discharge Ark from its primary liability for the full value of its policies, and thus the collectability of balances due from Ark’s reinsurers is critical to its financial strength. Ark monitors the financial strength and ratings of its reinsurers on an ongoing basis. See Note 6 “Third-Party Reinsurance”.
For the years of account prior to the Ark Transaction, a significant proportion of the Syndicates’ underwriting capital was provided by third-party insurance and reinsurance groups (“TPC Providers”)Providers using whole account reinsurance contracts with Ark’s corporate member. The TPC Providers’ participation in the Syndicates for the 2020 and 2019 open years of account is 42.8% and 58.3% of the total net result of the Syndicates. For the years of account subsequent to the Ark Transaction, Ark is no longer using TPC Providers to provide underwriting capital for the Syndicates. Captions within results of operations and other comprehensive income are shown net of amounts relating to the TPC Providers share of the Syndicates’ results, including investment results.
Reinsurance recoverables represent paid losses and LAE, case reserves and IBNR reserves ceded to reinsurers under reinsurance treaties. Amounts recoverable from reinsurers are estimated in a manner consistent with the associated claimclaims liability. Ark reports its reinsurance recoverables net of an allowance for estimated uncollectible reinsurance, including expected credit losses and coverage disputes. The allowance is based upon Ark’s ongoing review of amounts outstanding, length of collection periods, changes in reinsurer credit standing, disputes, applicable coverage defenses and other relevant factors.

Reinsurance Contracts Accounted for as Deposits
Reinsurance contracts that do not meet the risk transfer requirements necessary to be accounted for as reinsurance are accounted for using the deposit method. Under the deposit method, ceded premiums paid are not recognized through income but rather treated as a deposit.
BAM entered into twothree ceded reinsurance agreements with Fidus Re Ltd. (“Fidus Re”), a Bermuda-based special purpose insurer created in 2018 solely to provide reinsurance protection to BAM. BAM also entered into an excess of loss reinsurance agreement (the “XOLT”) with HG Re. The nonrefundable considerationfinancing expenses paid by BAM to Fidus Re is charged to financing expense withinunder these reinsurance agreements are recorded in general and administrative expenses. See Note 10 — “Municipal Bond Guarantee Insurance”.
Ark has an aggregate excess of loss contract with SiriusPoint Ltd. (“SiriusPoint”), formerly Third Point Reinsurance Ltd., which is accounted for using the deposit method and recorded within other assets. Ark earns an annual crediting rate of 3.0%, which is recorded within other revenue. See Note 6 — “Third-Party Reinsurance”.

Revenue Recognition
NSM’s revenues consist primarily of commissions and broker revenues for placement of insurance policies and administrative fees for claims and other services provided to insurance carriers. Commission and broker revenues and service fees are measured based on the contractual rates with insurance carriers, net of any amounts expected to be uncollectible and any amounts associated with expected policy cancellations and adjustments, and are recognized when contractual performance obligations have been fulfilled. NSM’s primary contractual performance obligations are generally satisfied upon the issuance of an insurance policy by the carrier. Where NSM has significant performance obligations beyond the policy issuance date, NSM estimates the relative standalone selling price for the post-issuance services in order to allocate the transaction price using the price charged for the service when sold separately in similar circumstances to similar customers.
NSM earns contingent commissions based upon the overall profit and/or volume of the business placed with certain insurance carriers during a calendar year. Contingent commissions are determined after the contractual period has ended. NSM recognizes revenue on contingent commissions when management has determined that it is probable that the contingent commission requirements have been met.
NSM’s premiums and commissions receivables consist of insurance premiums receivable from customers and commissions receivable from insurance carriers, net of a provision for amounts estimated to be uncollectible.
Deferred revenues associated with unsatisfied performance obligations are recognized within other liabilities.
Kudu’s revenues are primarily generated from non-controllingParticipation Contracts, which are noncontrolling equity interests in revenue and earnings participation contracts with asset and wealth management firms. The participation contractsKudu’s Participation Contracts are measured at fair value with the change therein recognized within net realized and unrealized investment gains and losses.(losses). Distributions from Kudu’s clients are recognized through investment income when Kudu’s right to receive payment has been established and can be reliably measured, which generally occurs on a quarterly basis in accordance with the terms of the underlying participation contracts.Participation Contracts.
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During the period in which MediaAlpha was consolidated by White Mountains, MediaAlpha recognized advertisingMountains’s Other Operations recognizes agent commissions and publishing feeother revenues based on the contractual amount of the fees, adjusted for any amounts expected to be refunded or uncollectible, when it hadhas satisfied its contractualperformance obligations. Deferred revenues associated with unsatisfied performance obligations which was generally at the time each transaction was executed. For transactions where MediaAlpha acted as the principal, such as the Open exchange, revenue amounts were reported gross. For transactions where MediaAlpha acted as an agent facilitating transactions between third parties, revenue amounts were reported at the net fee billed.are recognized within other liabilities.

Commission Expense and Cost of Sales
NSM’s broker commission expense consists of commissions paid to sub-agents and brokers. Broker commission expense is measured in accordance with contractual terms and recognized when incurred, which is generally at the policy issuance date.
MediaAlpha’s cost of sales consisted primarily of revenue sharing payments to publisher partners and traffic acquisition costs to top tier search engines. Cost of sales were measured based on contract terms and recognized when the related revenue transactions are executed.
White Mountains’s Other Operations’sOperations’ cost of sales consists of salaries and related expenses, professional services and marketing and advertising expenses directly related to sales generation. These expenses are recognized as incurred.
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Goodwill and Other Intangible Assets
Goodwill represents the excess of the amount paid to acquire subsidiaries over the fair value of identifiable net assets at the date of acquisition. Other intangible assets consist primarily of underwriting capacity, customer relationships renewal rights and trade names.
Goodwill and other intangible assets with indefinite lives are not amortized, but rather are evaluated for impairment on an annual basis, or whenever indications of potential impairment exist. In the absence of any indications of potential impairment, the evaluation of goodwill and indefinite-lived intangible assets is performed no later than the interim period in which the anniversary of the acquisition date falls. White Mountains initially evaluates goodwill using a qualitative approach (step zero) to determine whether it is more likely than not that the implied fair value of goodwill is greater than its carrying value. If the results of theWhite Mountains determines, based on this qualitative evaluation indicatereview, that it is more likely than not that an impairment may exist, then White Mountains performs a quantitative analysis to compare the fair value of a reporting unit with its carrying value. If the carrying value of goodwill exceeds its impliedthe estimated fair value, White Mountains performs the two-step quantitative test for impairment.then an impairment charge is recognized through current period pre-tax income (loss).
Other intangible assets with finite lives are initially measured at their acquisition date fair values areand subsequently amortized over their economic lives. Other intangible assets with finite lives andare presented net of accumulated amortization on the balance sheet. Other intangible assets with finite lives are reviewed for impairment when events occur or there are changes in circumstances indicating that their carrying value may exceed fair value. Impairment exists when the carrying value of other intangible assets exceeds fair value. See Note 4 “Goodwill and Other Intangible Assets”.
Incentive Compensation
White Mountains’s Long-Term Incentive Plan (the “WTM Incentive Plan”) provides for grants of various types of share-based and non-share-based incentive awards to key employees of White Mountains. Non-share-based awards are recognized over the related service periods based on management’s best estimate of the amounts at which the awards are expected to be paid. Share-based compensation which is typically settled in cash, such as performance shares, is classified as a liability-type award. The compensation cost for liability-classified awards is measured initially at the grant date fair value and remeasured each reporting period until settlement. The compensation cost for equity-classified awards expected to be settled in shares, such as options and restricted shares, is measured at the original grant date fair value of the award. The compensation cost for all awards is recognized for the vested portion of the awards over the related service periods. See Note 12 — “Employee Share-Based Incentive Compensation Plans”.

Income Taxes
White Mountains has subsidiaries and branches that operate in various jurisdictions around the world and are subject to tax in the jurisdictions in which they operate.  As of December 31, 2021,2023, the primary jurisdictions in which White Mountains’sthe Company’s subsidiaries and branches operate and were subject to tax were Ireland,include Israel, Luxembourg, the United Kingdom and the United States. Income earned or losses generated by companies outside the United States are generally subject to an overall effective tax rate lower than that imposed by the United States.
Deferred tax assets and liabilities are recorded when a difference between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts for tax purposes exists, and for other temporary differences. The deferred tax asset or liability is recorded based on tax rates expected to be in effect when the difference reverses. Deferred tax assets represent amounts available to reduce income taxes payable in future periods. White Mountains records a valuation allowance against deferred tax assets if it becomes more likely than not that all or a portion of a deferred tax asset will not be realized. Changes in valuation allowances from period to period are included in income tax expense in the period of change. See Note 8 “Income Taxes”.

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Leases
Leases consistWhite Mountains has entered into lease agreements, primarily of operating leases for office space and equipment. Lease assets and liabilitiesThese leases are classified as operating leases, with lease expense recognized at the lease commencement date based on the present value of future minimum lease paymentsa straight-line basis over the lease term.term of the lease. Lease assets and liabilities are not recorded for leases with a term at inception of one year or less. Lease incentives, such as free rent or landlord reimbursements for leasehold improvements, are recognized at lease inception and amortized on a straight-line basis over the term of the lease. Lease expense and the amortization of leasehold improvements are recognized within general and administrative expenses. Lease payments related to options to extend or renew the lease term are excluded from the calculation of lease liabilities unless White Mountains is included in operating expenses. See reasonably certain of exercising those options.
As of December 31, 2023 and 2022, the right-of-use (“ROU”) assets were $20.3 million and $25.2 million, and the Note 13 – “Leases”lease liabilities. were $22.0 million and $27.1 million.

Non-controllingNoncontrolling Interests
Non-controllingNoncontrolling interests consist of the ownership interests of non-controllingnoncontrolling shareholders in consolidated subsidiaries and are presented separately on the balance sheet. The portion of comprehensive income (loss) attributable to non-controllingnoncontrolling interests is presented net of related income taxes in the statement of operations and comprehensive income (loss). See Note 1413 — “Common Shareholders’ Equity and Non-controllingNoncontrolling Interests”.

Foreign Currency Exchange
The functional currencycurrencies for White Mountains’s non-U.S. based subsidiaries are measured, in most instances, using functional currencies other than the U.S. dollar. Net foreign exchange gains and losses arising from the translation of functional currencies are generally reported in shareholders’ equity, in accumulated other comprehensive income or loss.(loss).
White Mountains also invests in securities denominated in foreign currencies. Assets and liabilities recorded in these foreign currencies are translated into U.S. dollars at exchange rates in effect at the balance sheet date, and revenues and expenses are converted using the weighted average exchange rates for the period.
As of December 31, 20212023 and 2020,2022, White Mountains had unrealized foreign currency translation gainslosses of $5.1$1.6 million and $5.6$3.5 million recorded in accumulated other comprehensive income (loss) on its consolidated balance sheet.

Fair Value Measurements
Fair value measurements are categorized into a hierarchy that distinguishes between inputs based on market data from independent sources (observable inputs) and a reporting entity’s internal assumptions based upon the best information available when external market data is limited or unavailable (unobservable inputs). Quoted prices in active markets for identical assets or liabilities have the highest priority (Level 1), followed by observable inputs other than quoted prices, including prices for similar but not identical assets or liabilities (Level 2), and unobservable inputs, including the reporting entity’s estimates of the assumptions that market participants would use, having the lowest priority (Level 3). See Note 1918 — “Fair Value of Financial Instruments”.

Business Combinations
White Mountains accounts for purchases of businesses using the acquisition method, which requires the measurement of assets acquired, including goodwill and other intangible assets, and liabilities assumed, including contingent liabilities, at their estimated fair values as of the acquisition date. The acquisition date fair values represent management’s best estimates and are based upon established valuation techniques, reasonable assumptions and, where appropriate, valuations performed by independent third parties. In circumstances where additional information is required in order to determine the acquisition date fair value of balance sheet amounts, provisional amounts may be recorded as of the acquisition date and may be subject to subsequent adjustment throughout the measurement period, which is up to one year from the acquisition date. Measurement period adjustments are recognized in the period in which they are determined. The results of operations and cash flows of businesses acquired are included in the consolidated financial statements from the date of acquisition. White Mountains accounts for purchases of other intangible assets that do not meet the definition of a business as asset acquisitions. Asset acquisitions are recognized at the amount of consideration paid, which is deemed to equal fair value.

Recently Adopted Changes in Accounting Principles

Income Taxes
On January 1, 2020, White Mountains adopted ASU 2019-12, Simplifying the Accounting for Income Taxes (ASC 740) (“ASU 2019-12”), which removes exceptions to standard guidance. Under the new guidance non-income-based taxes, such as franchise taxes, are reported within pre-tax income rather than being included in income taxes. In addition, the new guidance eliminated the exception to the incremental approach for inter-period tax allocation, which previously allowed consideration of the tax effect of items such as discontinued operations and items recognized through other comprehensive income.
For periods subsequent to the adoption of ASU 2019-12, White Mountains has recorded both the tax expense related to BAM’s member surplus contributions (“MSC”) and the related valuation allowance on such taxes through the non-controlling interest equity. Prior to the adoption of ASU 2019-12, White Mountains recorded the tax expense related to BAM’s MSC directly to non-controlling interest equity, while the valuation allowance on such taxes was recorded through the income statement.

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Goodwill
On January 1, 2020, White Mountains adopted ASU 2017-04, Simplifying the Test for Goodwill Impairment (ASC 350) (“ASU 2017-04”), which changed the guidance on goodwill impairment testing. Under the new guidance, the qualitative assessment of the recoverability of goodwill remains the same, but the second step of the two-step quantitative test, which required calculation of the implied fair value of goodwill, has been eliminated. Instead, an impairment charge is recognized when the carrying value of a reporting unit exceeds its fair value. Any excess of carrying value over fair value is written down as an impairment. White Mountains did not identify any impairment indicators associated with its reporting units and therefore did not recognize an impairment of goodwill during the year ended December 31, 2020, and accordingly, adoption of ASU 2017-04 did not have any impact on White Mountains’s financial statements.

Credit Losses
On January 1, 2020, White Mountains adopted ASU 2016-13, Measurement of Credit Losses on Financial Instruments (ASC 326) (“ASU 2016-13”), which establishes new guidance for the recognition of credit losses for financial assets measured at amortized cost. The new ASU requires reporting entities to estimate the credit losses expected over the life of a credit exposure using historical information, current information and reasonable and supportable forecasts that affect the collectability of the financial asset. White Mountains measures its portfolio of investment securities at fair value with changes therein recognized through current period earnings and, accordingly, adoption of ASU 2016-13 did not have any impact on White Mountains’s financial statements.

Note 2. Significant Transactions

MediaAlphaBamboo Transaction

On February 26, 2019, MediaAlpha completedOctober 19, 2023, White Mountains entered into an agreement and plan of merger (the “Bamboo Merger Agreement”) with Bamboo Ide8 Insurance Services LLC (“Bamboo MGA”) and John Chu, as the sale of a significant minority stake to Insignia Capital Group in connection with a recapitalization and cash distribution to existing equityholders. MediaAlpha also repurchased a portionunitholders’ representative. Under the terms of the holdingsBamboo Merger Agreement, White Mountains’s wholly-owned subsidiary, WM Pierce Merger Sub LLC, agreed to merge with and into Bamboo MGA, with Bamboo MGA continuing as the surviving company (the “Bamboo Merger”). Concurrently with the execution of the Bamboo Merger Agreement, certain Bamboo management unitholders agreed to rollover the majority of their existing equityholders.equity in Bamboo MGA into PM Holdings LLC (“Bamboo Holdings”) (collectively with Bamboo MGA and Ide8 Limited (“Bamboo Captive”), “Bamboo”). White Mountains also agreed to make an equity contribution to Bamboo immediately following the Bamboo Merger (together with the Bamboo Merger and the rollover transactions, the “Bamboo Transaction”).
On January 2, 2024, White Mountains closed the Bamboo Transaction in accordance with the terms of the Bamboo Merger Agreement, investing $296.7 million in equity into Bamboo, which included the contribution of $36.0 million to retire Bamboo’s legacy credit facility and the contribution of $20.0 million of primary capital. The consideration is subject to customary purchase price adjustments. At closing, White Mountains owned 72.8% of Bamboo on a basic shares outstanding basis (63.7% on a fully-diluted/fully-converted basis, taking account of management’s equity incentives). At closing, 16.1% of basic shares outstanding are owned by Bamboo management (26.6% on a fully-diluted/fully-converted basis).
Bamboo is a capital-light, tech- and data-enabled insurance distribution platform providing homeowners’ insurance and related products to the residential property market in California. Bamboo operates primarily through Bamboo MGA, its full-service MGA business, where the company manages all aspects of the placement process on behalf of its fronting and reinsurance partners, including product development, marketing, underwriting, policy issuance and claims oversight, and it earns commissions based on the volume and profitability of the insurance that it places. It offers both admitted and non-admitted insurance products. Bamboo also operates two separate but integrated business models: (i) a retail agency, within Bamboo MGA, offering ancillary products (e.g., flood, earthquake) on behalf of third parties and (ii) Bamboo Captive, a Bermuda-domiciled captive reinsurer that participates in the underwriting risk of Bamboo’s MGA programs to align interests with reinsurance partners. Bamboo will be consolidated and presented as a reportable segment for periods after December 31, 2023.

NSM

On August 1, 2022, the NSM Transaction closed. White Mountains received $1.4 billion in net cash proceeds at closing and recognized a net transaction gain of $89.3$875.7 million, which was comprised of $886.8 million of net gain from sale of discontinued operations and $2.9 million of comprehensive income related to the recognition of foreign currency translation gains (losses) from the 2019 MediaAlpha Transaction.sale, partially offset by $14.0 million of compensation and other costs related to the transaction recorded in Other Operations.
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WM Outrigger Re

During the fourth quarter of 2022, Ark sponsored the formation of Outrigger Re Ltd., a Bermuda company registered as a special purpose insurer and segregated accounts company, to provide reinsurance capacity to Ark. On December 20, 2022, Outrigger Re Ltd. issued $250 million of non-voting redeemable preference shares on behalf of four segregated accounts to White Mountains recognized a realized gain of $67.5 million and reduced its ownership interest to 48.3%unrelated third-party investors. Upon issuance of the basic units outstandingpreference shares, Outrigger Re Ltd. entered into collateralized quota share agreements with GAIL to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of MediaAlpha (42.0% on a fully diluted, fully converted basis) as a resultloss portfolio written in the 2023 underwriting year. The proceeds from the issuance of the 2019 MediaAlpha Transaction. White Mountains’s remaining ownership interestpreference shares were deposited into collateral trust accounts to fund any potential obligations under the reinsurance agreements with GAIL. Outrigger Re Ltd.’s obligations under the reinsurance agreements with GAIL are subject to an aggregate limit equal to the assets in MediaAlpha no longer met the criteria for a controlling ownership interestcollateral trusts. The terms of the reinsurance agreements are renewable upon the mutual agreement of Ark and accordingly,the applicable preference shareholder of Outrigger Re Ltd.
During the fourth quarter of 2022, White Mountains deconsolidated MediaAlpha on February 26, 2019.purchased 100% of the preference shares linked to its segregated account, WM Outrigger Re, for $205.0 million. White Mountains consolidates WM Outrigger Re’s results in its financial statements. WM Outrigger Re’s quota share reinsurance agreement with GAIL eliminates in White Mountains’s consolidated statementfinancial statements.
During the fourth quarter of operations and comprehensive income (loss) and its segment disclosures include MediaAlpha’s results2023, Ark renewed Outrigger Re Ltd. to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of operationsloss portfolio written in the 2024 underwriting year. Outrigger Re Ltd. was capitalized with $250.0 million for business written in the period from January 1, 2019 through February 26, 2019. Upon deconsolidation, White Mountains’s investment in MediaAlpha met the criteria to be accounted for under the equity method or under the fair value option.2024 underwriting year, of which White Mountains elected the fair value option and the investment in MediaAlpha was initially measured atrolled over $130.0 million from its estimated fair value of $114.7 million as of the transaction date, with the change in fair value of $114.7 million recognized as an unrealized investment gain. White Mountains recognized a total of $182.2 million of realized gain and unrealized investment gain on the 2019 MediaAlpha Transaction.
On October 30, 2020, MediaAlpha completed the MediaAlpha IPO. In the offering, White Mountains sold 3.6 million shares and received total proceeds of $63.8 million. White Mountains also received $55.0 million of net proceeds related to a dividend recapitalization at MediaAlpha priorcommitment to the MediaAlpha IPO. Following the MediaAlpha IPO, White Mountains owned 20.5 million MediaAlpha shares, representing a 35.0% ownership interest (32.3% on a fully-diluted, fully converted basis). At the December 31, 2020 closing price of $39.07 per share, the value of White Mountains’s2023 underwriting year. The remaining investment in MediaAlphacapital was $802.2 million.provided by new and continuing unrelated third-party investors.
On March 23, 2021, MediaAlpha completed a secondary offering of 8.05 million shares. In the secondary offering, White Mountains sold 3.6 million shares at $46.00 per share ($44.62 per share net of underwriting fees) for net proceeds of $160.3 million. As of December 31, 2021,2023 and 2022, short-term investments of $265.3 million and $203.7 million were held in a collateral trust, after expenses of $1.3 million.
During January 2024, White Mountains owned 16.9received an initial return of capital of $68.1 million shares, representing a 28.0% basic ownership interest (25.7% fully-diluted/fully-converted basis). Atfrom WM Outrigger Re for business written in the December 31, 2021 closing price2023 underwriting year. White Mountains expects to receive any additional return of $15.44 per share,capital and associated profits from business written in the fair value2023 underwriting year beginning in the second quarter of White Mountains’s investment in MediaAlpha was $261.6 million. See Note 17 — “Equity-Method Eligible Investments”.2024.

Ark
O
n
On October 1, 2020, White Mountains entered into a subscription and purchase agreement (the “Ark SPA”) with Ark and certain selling shareholders (collectively with Ark, the “Ark Sellers”). Under the terms of the Ark SPA, White Mountains agreed to contribute $605.4 million of equity capital to Ark, at a pre-money valuation of $300.0 million, and to purchase $40.9 million of shares from the Ark Sellers. White Mountains also agreed to contribute up to an additional $200.0 million of equity capital to Ark in 2021. In accordance with the Ark SPA, in the fourth quarter of 2020 White Mountains pre-funded/placed in escrow a total of $646.3 million in preparation for closing the transaction, including $280.0 million funded directly to Lloyd’s on behalf of Ark under the terms of a credit facility agreement and $366.3 million placed in escrow, which is reflected on the balance sheet within the Other Operations segment as of December 31, 2020.
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On January 1, 2021, White Mountains completed the Ark Transaction in accordance with the terms of the Ark SPA. As of December 31, 2021, White Mountains owned 72.0% of Ark on a basic shares outstanding basis (63.0% after taking account of management’s equity incentives). The remaining shares are owned by employees. In the future, management rollover shareholders could earn additional shares in Ark if and to the extent that White Mountains achieves certain thresholds for its multiple of invested capital return threshold.return. If fully earned, these additional shares would represent 12.5% of the shares outstanding at closing.
White Mountains recognized total assets acquired related to the Ark Transaction of $2.5 billion, including goodwill and other intangible assets of $292.5 million, and total liabilities of $1.7 billion, including contingent consideration of $22.5 million and non-controllingnoncontrolling interest of $220.2 million. Ark incurred transaction costs of $25.3 million in the first quarter of 2021.
In the third quarter of 2021, Ark issued $163.3 million of floating rate unsecured subordinated notes (the “Ark 2021 Subordinated Notes”) in three separate transactions. See Note 7 — “Debt”. In connection with the issuance of the Ark 2021 Subordinated Notes, White Mountains and Ark terminated White Mountains’s commitment to provide up to $200.0 million of additional equity capital to Ark in 2021.
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The following presents additional details of the assets acquired and liabilities assumed as of the January 1, 2021 acquisition date:
MillionsAs of January 1, 2021
Investments$594.3
Cash52.0(1)
Reinsurance recoverables433.4
Insurance premiums receivable236.7
Ceded unearned premiums170.2
Value of in-force business acquired71.7
Other assets88.9
Loss and loss adjustment expense reserves(696.0)
Unearned insurance premiums(326.1)
Debt(46.4)
Ceded reinsurance payable(528.3)
Other liabilities(25.9)
   Net tangible assets acquired24.5
Goodwill116.8
Other intangible assets - syndicate underwriting capacity175.7
Deferred tax liability on other intangible assets(33.4)
  Net assets acquired$283.6
(1) Cash excludes the White Mountains cash contribution of $605.4 as part of the Ark Transaction.

The values of net tangible assets acquired and the resulting goodwill, other intangible assets and contingent consideration were recorded at fair value using Level 3 inputs. The majority of the tangible assets acquired and liabilities assumed were recorded at their carrying values, as their carrying values approximated their fair values due to their short-term nature. The fair values of goodwill, other intangible assets and the contingent consideration liability were internally estimated primarily based on the income approach. The income approach estimates fair value based on the present value of the cash flows that the assets are expected to generate in the future. White Mountains developed internal estimates for the expected future cash flows and discount rates used in the present value calculations.
The value of in-force business acquired represents the estimated profits relating to the unexpired contracts, net of related prepaid reinsurance, at the acquisition date through the expiration date of the contracts. During the years ended December 31, 2023, 2022 and 2021, Ark recognized $0.0 million, $7.5 million and $64.2 million of amortization expense on the value of in-force business acquired. The value of the syndicate underwriting capacity intangible asset was estimated using net cash flows attributable to Ark’s rights to write business in the Lloyd’s market. The value of the in-force business acquired and the syndicate underwriting capacity were estimated using a discounted cash flow method. Significant inputs to the valuation models include estimates of growth in premium revenues, investment returns, claimclaims costs, expenses and discount rates based on a weighted average cost of capital.
In evaluating the fair value of Ark’s loss and loss adjustment expense reserves, White Mountains determined that the risk-free rate of interest was approximately equal to the risk factor reflecting the uncertainty within the reserves, and thatthus no adjustment was necessary. ForDuring the yearyears ended December 31, 2023, 2022 and 2021, Ark recognized pre-tax expense of $48.7 million, $17.3 million and $5.5 million for the change in the fair value of its contingent consideration liabilities. Any future adjustments to contingent consideration liabilities will be recognized through pre-tax income (loss). As of December 31, 2021,2023 and 2022, Ark recognized total contingent consideration liabilities of $28.0$94.0 million and $45.3 million.
Ark’s segment income and expenses for 2023, 2022 and 2021 are presented in Note 1615 — “Segment Information.”

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NSM
On May 18, 2018, NSM acquired 100% of Fresh Insurance, which is an insurance broker that offers non-standard personal lines products in the United Kingdom. NSM paid $49.6 million of upfront cash consideration for Fresh Insurance. NSM borrowed $51.0 million to fund the transaction. During the nine months ended September 30, 2019, NSM paid a purchase price adjustment of an additional $0.7 million of consideration. The purchase price was subject to additional adjustments based upon growth in EBITDA during 2 earnout periods ending in February 2020 and 2022. NSM did not make any payments related to the first Fresh Insurance earnout period.
On April 12, 2021, NSM sold Fresh Insurance’s motor business for net proceeds of £1.1 million ($1.5 million based upon the foreign exchange spot rate as of the transaction date). As of March 31, 2021, the Fresh Insurance motor business was classified as held for sale and NSM recognized a loss of $28.7 million in 2021. See Note 21 — “Held for Sale and Discontinued Operations”.
On December 3, 2018, NSM acquired all the net assets of KBK Insurance Group, Inc. (“KBK”), a specialized MGU focused on the towing and transportation space. NSM paid $60.0 million of upfront cash consideration for KBK. White Mountains contributed $29.0 million and NSM borrowed $30.1 million to fund the transaction. White Mountains recognized $59.4 million of goodwill and other intangible assets, reflecting acquisition date fair values, for which the relative fair values of goodwill and other intangible assets had not yet been finalized as of December 31, 2018. During 2019, NSM determined that the relative values of goodwill and other intangible assets recorded in connection with the KBK transaction were $32.6 million and $32.7 million, reflecting acquisition date fair values. The purchase price was subject to additional adjustments based upon growth in EBITDA during three earn out periods ending in December 2019, December 2020 and December 2021. During 2019, NSM recorded a purchase price adjustment of $5.9 million relating to the fair value of the contingent consideration liability in connection with the acquisition. During 2021 and 2020, NSM paid $6.7 million and $6.4 million related to the first and second KBK earnout periods.
On April 1, 2019, NSM acquired 100% of Embrace Pet Insurance (“Embrace”), a nationwide provider of pet health insurance for dogs and cats. NSM paid $71.5 million of cash consideration, net of cash acquired, for Embrace. White Mountains contributed $58.2 million to NSM and NSM borrowed $20.4 million to fund the transaction. White Mountains recognized $52.2 million of goodwill and $15.4 million of other intangible assets, reflecting acquisition date fair values.
On June 28, 2019, NSM acquired the renewal rights on its U.S. collector car business (the “Renewal Rights”) from American International Group, Inc. (“AIG”) for $82.5 million. The acquisition satisfied NSM’s obligation to acquire the Renewal Rights from AIG. See Note 20 — “Commitments and Contingencies”. White Mountains contributed $59.1 million to NSM and NSM borrowed $22.5 million to fund the transaction. White Mountains recognized $82.5 million of other intangible assets, reflecting the acquisition date fair value. See Note 4 — “Goodwill and Other Intangible Assets”.
On April 7, 2020, NSM acquired 100% of Kingsbridge Group Limited (“Kingsbridge”), a leading provider of commercial lines insurance and consulting services for the professional contractor and freelancer markets in the United Kingdom. NSM paid £107.2 million ($132.2 million based upon the foreign exchange spot rate at the date of acquisition) of upfront cash consideration for Kingsbridge. White Mountains contributed $80.3 million to NSM and NSM borrowed £42.5 million ($52.4 million based upon the foreign exchange spot rate at the date of acquisition) to fund the transaction. During 2020, NSM determined that the relative values of goodwill and other intangible assets recorded in connection with the Kingsbridge transaction were $111.5 million and $20.2 million, reflecting acquisition date fair values. The purchase price was subject to adjustment based upon growth in EBITDA during an earnout period ending in January 2022. During 2020, NSM initially recorded a liability relating to the fair value of the Kingsbridge contingent consideration of $4.1 million. During 2021 and 2020, NSM recognized pre-tax income (loss) of $(0.3) million and $4.1 million for the change in fair value of the Kingsbridge contingent consideration liability. As of December 31, 2021, there was no Kingsbridge contingent consideration liability. As of December 31, 2020, the Kingsbridge contingent consideration liability was $0.3 million.
On August 6, 2021, NSM acquired 100% of J.C. Taylor Insurance (“J.C. Taylor”), an MGA offering classic and antique collector car insurance. NSM paid $49.6 million of upfront cash consideration for J.C. Taylor. NSM borrowed $35.0 million under its credit facility to fund the acquisition. The remaining balance was funded with cash on hand at NSM. NSM recognized total assets acquired related to the J.C. Taylor transaction of $60.3 million, including goodwill and other intangible assets of $55.7 million, and total liabilities of $10.7 million. During 2021, NSM determined that the relative values of goodwill and other intangible assets recorded in connection with the J.C. Taylor transaction were $28.5 million and $27.2 million, reflecting acquisition date fair values.


F - 19


The contingent consideration liabilities related to NSM’s acquisitions are subject to adjustments based upon EBITDA, EBITDA projections,Kudu

On May 26, 2022, Kudu raised $114.5 million of equity capital (the “Kudu Transaction”) from Massachusetts Mutual Life Insurance Company (“Mass Mutual”), White Mountains and presentKudu management. Mass Mutual, White Mountains and Kudu management contributed $64.1 million, $50.0 million and $0.4 million at a pre-money valuation of 1.3x book value, factors for acquired entities. Foror $114.0 million, above the years ended December 31, 2021 and 2020, NSM recognized pre-tax expense (income) of $1.0 million and $(3.3) million for the change in the fairequity value of its contingent consideration liabilities. Any future adjustments to contingent consideration liabilities under the agreements will be recognized through pre-tax income (loss). AsKudu’s go-forward portfolio of Participation Contracts. The go-forward portfolio of Kudu’s Participation Contracts excluded $54.3 million of enterprise value as of December 31, 2021 and 2020, NSM recognized total contingent consideration liabilities of $6.8 million and $14.6 million. During 2021 and 2020, NSM paid $8.8 million and $7.0 million of contingent consideration liabilities relatedrelating to KBK andtwo portfolio companies that had announced sale transactions prior to the U.K. vertical.

Kudu
On February 5, 2018, White Mountains entered into an agreement to fund up to $125.0 million in Kudu in exchange for a 49.5% basic unit ownership interest in Kudu (42.7% on a fully diluted, fully converted basis). On April 4, 2019, White Mountains acquired the ownership interests in Kudu held by certain funds managed by Oaktree for cash consideration of $81.4 million. In addition, White Mountains assumed all of Oaktree’s unfunded capital commitments to Kudu, increasing White Mountains’s total capital commitment to $250.0 million. White Mountains recognized total assets acquired of $155.5 million, including $7.6 million of goodwill and $2.2 million of other intangible assets, total liabilities assumed of $0.8 million and non-controlling interest of $1.5 million.
raise. As a result of the Kudu Transaction, White Mountains’s basic unit ownership of Kudu increaseddecreased from 49.5%99.1% to 99.1% (42.7% to 85.4% on a fully diluted, fully converted basis), and White Mountains began consolidating Kudu as a reportable segment in its financial statements during the second quarter of 2019. White Mountains’s consolidated financial statements and its segment disclosures include Kudu’s results for the period from April 4, 2019 to December 31, 2019. For periods prior to the Kudu Transaction, White Mountains determined that Kudu was a VIE, but White Mountains was not the primary beneficiary. In those periods, White Mountains elected to use the fair value option.
During the fourth quarter of 2019, White Mountains increased its total capital commitment to Kudu by $100.0 million to $350.0 million. During the fourth quarter of 2021, White Mountains increased its total capital commitment to Kudu by an additional $19.0 million to $369.0 million. As of December 31, 2021, Kudu has fully drawn on the total capital commitment.89.3%.

PassportCard/DavidShield
On January 24, 2018, White Mountains acquired a 50.0% ownership interest in DavidShield, its joint venture partner in PassportCard. DavidShield is a managing general agency that is the leading provider of expatriate medical insurance in Israel and uses the same card-based delivery system as PassportCard. As part of the transaction, White Mountains reorganized its equity stake in PassportCard so that White Mountains and its partner in DavidShield would each own 50.0% of both businesses. To facilitate the transaction, White Mountains provided financing to its partner in the form of a non-interest bearing loan that is secured by the partner’s equity in PassportCard and DavidShield. The gross purchase price for the 50.0% interest in DavidShield was $41.8 million, or $28.3 million net of the financing provided for the restructuring.
On May 7, 2020, White Mountains made an additional $15.0 million investment in PassportCard/DavidShield to support operations through the ongoing COVID-19 pandemic. The transaction increased White Mountains’s ownership interest from 50.0% to 53.8%, but had no impact on the governance structure of the companies, including White Mountains’s board representation or other investor rights. The governance structures for both PassportCard and DavidShield were designed to give White Mountains and its co-investor equal power to make the decisions that most significantly impact the operations of PassportCard and DavidShield.




F - 20


Note 3. Investment Securities

White Mountains’s portfolio of investment securities held for general investment purposes consists of fixed maturity investments, short-term investments, common equity securities, its investment in MediaAlpha and other long-term investments.White Mountains’s portfolio of fixed maturity investments, whichincluding those within short-term investments, are classified as trading securities. Trading securities are reported at fair value as of the balance sheet date. Net realized and unrealized investment gains (losses) on trading securities are reported in pre-tax revenues.
White Mountains’s fixed maturity investments are generally valued using industry standard pricing methodologies. Key inputs include benchmark yields, benchmark securities, reported trades, issuer spreads, bids, offers, credit ratings and prepayment speeds. Income on mortgage and asset-backed securities is recognized using an effective yield based on anticipated prepayments and the estimated economic life of the securities. When actual prepayments differ significantly from anticipated prepayments, the estimated economic life is recalculated and the remaining unamortized premium or discount is amortized prospectively over the remaining economic life.
Realized investment gains (losses) resulting from sales of investment securities are accounted for using the specific identification method. Premiums and discounts on all fixed maturity investments are amortized or accreted to income over the anticipated life of the investment. Short-term investments consist ofalso include interest-bearing money market funds and certificates of deposit and other securities, which at the time of purchase, mature or become available for use within one year.  Short-term investmentsthat are carried at fair value, which approximated amortized cost, asvalue. White Mountains’s portfolio of December 31, 2021common equity securities, its investment in MediaAlpha and 2020.
other long-term investments are measured at fair value.Other long-term investments consist primarily of unconsolidated entities, including Kudu’s Participation Contracts, private equity funds and hedge funds, a bank loan fund, private equity funds, hedge funds, Lloyd’s trust deposits, ILS funds and private debt instruments.White Mountains has taken the fair value option for its equity method eligible investments. See Note 16 — Equity Method Eligible Investments”. Net realized and unrealized investment gains (losses) are reported in pre-tax revenues.

Net Investment Income

White Mountains’s net investment income is comprised primarily of interest income associated with White Mountains’s fixed maturity investments and short-term investments, dividend income from common equity securities distributions from its investment in MediaAlpha and distributions from other long-term investments.
The following table presents pre-tax net investment income for the years ended December 31, 2021, 20202023, 2022 and 2019:2021:

Year Ended December 31,
Year Ended December 31,Year Ended December 31,
MillionsMillions202120202019Millions202320222021
Fixed maturity investmentsFixed maturity investments$28.8 $29.0 $32.4 
Short-term investmentsShort-term investments.6 1.1 5.0 
Common equity securitiesCommon equity securities.1 6.6 13.5 
Investment in MediaAlpha 59.9 8.0 
Other long-term investments
Other long-term investments
Other long-term investmentsOther long-term investments56.3 35.6 22.1 
Amount attributable to TPC ProvidersAmount attributable to TPC Providers(1.0)— — 
Total investment incomeTotal investment income84.8 132.2 81.0 
Third-party investment expensesThird-party investment expenses(2.3)(1.2)(1.3)
Net investment income, pre-taxNet investment income, pre-tax$82.5 $131.0 $79.7 

F - 2120


Net Realized and Unrealized Investment Gains (Losses)

The following table presents net realized and unrealized investment gains (losses) for the years ended December 31, 2021, 20202023, 2022 and 2019:2021:

Year Ended December 31,
Year Ended December 31,Year Ended December 31,
MillionsMillions202120202019Millions202320222021
Realized investment gains (losses)Realized investment gains (losses)
Fixed maturity investments
Fixed maturity investments
Fixed maturity investmentsFixed maturity investments$3.9 $10.9 $4.9 
Short-term investmentsShort-term investments(.1).4 .2 
Common equity securitiesCommon equity securities.4 137.2 85.9 
Investment in MediaAlphaInvestment in MediaAlpha160.3 63.8 — 
Other long-term investmentsOther long-term investments(7.7)(25.2)5.6 
Net realized investment gains (losses)Net realized investment gains (losses)156.8 187.1 96.6 
Unrealized investment gains (losses)Unrealized investment gains (losses)
Unrealized investment gains (losses)
Unrealized investment gains (losses)
Fixed maturity investmentsFixed maturity investments$(42.2)$27.5 $38.6 
Fixed maturity investments
Fixed maturity investments
Short-term investments
Common equity securitiesCommon equity securities14.9 (130.6)109.8 
Investment in MediaAlphaInvestment in MediaAlpha(540.6)622.2 180.0 
Other long-term investmentsOther long-term investments172.7 10.6 8.2 
Net unrealized investment gains (losses)Net unrealized investment gains (losses)(395.2)529.7 336.6 
Net realized and unrealized investment gains (losses), before
amount attributable to TPC providers(1)
Net realized and unrealized investment gains (losses), before
amount attributable to TPC providers(1)
(238.4)716.8 433.2 
Amount attributable to TPC ProvidersAmount attributable to TPC Providers(7.7)— — 
Net realized and unrealized investment gains (losses)
Net realized and unrealized investment gains (losses)
$(246.1)$716.8 $433.2 
Fixed maturity and short-term investmentsFixed maturity and short-term investments
Fixed maturity and short-term investments
Fixed maturity and short-term investments
Net realized and unrealized investment gains (losses)
Net realized and unrealized investment gains (losses)
Net realized and unrealized investment gains (losses) Net realized and unrealized investment gains (losses)$(38.4)$38.8 $43.7 
Less: net realized and unrealized gains (losses) on investment
securities sold during the period
Less: net realized and unrealized gains (losses) on investment
securities sold during the period
(8.4)(8.7)1.0 
Net unrealized investment gains (losses) on investment
securities held at the end of the period
$(30.0)$47.5 $42.7 
Net unrealized investment gains (losses) recognized during the
period on investment securities held at the end of the period
Common equity securities and investment in MediaAlphaCommon equity securities and investment in MediaAlpha
Common equity securities and investment in MediaAlpha
Common equity securities and investment in MediaAlpha
Net realized and unrealized investment gains (losses) on
common equity securities
Net realized and unrealized investment gains (losses) on
common equity securities
Net realized and unrealized investment gains (losses) on common equity securitiesNet realized and unrealized investment gains (losses) on common equity securities$15.3 $6.6 $195.7 
Net realized and unrealized investment gains (losses) from investment in MediaAlphaNet realized and unrealized investment gains (losses) from investment in MediaAlpha(380.3)686.0 180.0 
Total net realized and unrealized investment gains (losses)Total net realized and unrealized investment gains (losses)(365.0)692.6 375.7 
Less: net realized and unrealized gains (losses) on investment
securities sold during the period
Less: net realized and unrealized gains (losses) on investment
securities sold during the period
20.3 38.3 24.0 
Net unrealized investment gains (losses) on investment
securities held at the end of the period
$(385.3)$654.3 $351.7 
Net unrealized investment gains (losses) recognized during the
period on investment securities held at the end of the period
(1) For 2023, 2022 and 2021, 2020includes $13.6, $(29.3) and 2019, includes $(7.7), $4.0 and $(0.3) of net realized and unrealized investment gains (losses) related to foreign currency exchange.

For the years ended December 31, 2021, 20202023, 2022 and 2019,2021, all of White Mountains’s net realized and unrealized investment gains (losses) were recorded in the consolidated statements of operations. There were no investment gains (losses) recorded in other comprehensive income.
White Mountains recognized gross realized investment gains of $212.3$113.7 million, $214.4$129.9 million and $104.0$212.3 million and gross realized investment losses of $55.5$16.9 million, $27.3$14.8 million and $7.4$55.5 million on sales of investment securities for the years ending December 31, 2021, 20202023, 2022 and 2019.2021.
F - 2221


The following table presents total net unrealized gains included in earnings(losses) attributable to net unrealized investment gains for Level 3 investments for the years ended December 31, 2021, 20202023, 2022 and 20192021 for investments still held at the end of the period:
Year Ended December 31,
Millions202120202019
Other long-term investments (1)
$98.9 $276.0 $181.9 
Total net unrealized investment gains, pre-tax - Level 3 investments$98.9 $276.0 $181.9 
(1) For 2020 and 2019, includes $278.7 and $180.0 of unrealized investment gains from White Mountains’s investment in MediaAlpha.
Year Ended December 31,
Millions202320222021
Total net unrealized investment gains on other long-term investments held at
   the end of period, pre-tax
$133.9 $56.5 $98.9 

Proceeds from the sales and maturities of investments, excluding short-term investments, totaled $0.8 billion, $1.4$0.5 billion and $1.0$0.8 billion for the years ended December 31, 2021, 20202023, 2022 and 2019.2021.

Investment Holdings

The following tables present the cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses) and carrying valuesvalue of White Mountains’s fixed maturity investments as of December 31, 20212023 and 2020.2022:
December 31, 2021
December 31, 2023December 31, 2023
MillionsMillionsCost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Net Foreign
Currency
Gains (Losses)
Carrying
Value
MillionsCost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Net Foreign
Currency
Gains (Losses)
Carrying
Value
U.S. Government and agency obligationsU.S. Government and agency obligations$212.1 $.5 $(1.1)$— $211.5 
Debt securities issued by corporationsDebt securities issued by corporations993.3 8.7 (8.7)(.4)992.9 
Municipal obligationsMunicipal obligations276.4 16.8 (1.3)— 291.9 
Mortgage and asset-backed securitiesMortgage and asset-backed securities277.2 2.9 (2.5)— 277.6 
Collateralized loan obligationsCollateralized loan obligations136.5 — (.4)(1.1)135.0 
Total fixed maturity investmentsTotal fixed maturity investments$1,895.5 $28.9 $(14.0)$(1.5)$1,908.9 

December 31, 2020
December 31, 2022
December 31, 2022
December 31, 2022
MillionsMillionsCost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Carrying
Value
MillionsCost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Net Foreign
Currency
Gains (Losses)
Carrying
Value
U.S. Government and agency obligationsU.S. Government and agency obligations$173.2 $3.1 $— $176.3 
Debt securities issued by corporationsDebt securities issued by corporations522.8 24.7 (.1)547.4 
Municipal obligationsMunicipal obligations244.0 21.0 — 265.0 
Mortgage and asset-backed securitiesMortgage and asset-backed securities211.7 6.8 — 218.5 
Collateralized loan obligations
Total fixed maturity investments
Total fixed maturity investments
Total fixed maturity investmentsTotal fixed maturity investments$1,151.7 $55.6 $(.1)$1,207.2 


F - 22


The weighted average duration of White Mountains’s fixed income portfolio was 2.61.9 years, including short-term investments, and 3.23.3 years, excluding short-term investments, as of December 31, 2021.2023.
The following table presents the cost or amortized cost and carrying value of White Mountains’s fixed maturity investments by contractual maturity as of December 31, 2021.2023. Actual maturities could differ from contractual maturities because borrowers may have the right to call or prepay certain obligations with or without call or prepayment penalties.
December 31, 2021
MillionsCost or Amortized CostCarrying Value
Due in one year or less$136.7 $137.3 
Due after one year through five years866.2 865.0 
Due after five years through ten years365.7 371.5 
Due after ten years113.2 122.5 
Mortgage and asset-backed securities and
   collateralized loan obligations
413.7 412.6 
Total fixed maturity investments$1,895.5 $1,908.9 
F - 23


December 31, 2023
MillionsCost or Amortized CostCarrying Value
Due in one year or less$319.9 $315.0 
Due after one year through five years845.0 813.9 
Due after five years through ten years303.4 287.0 
Due after ten years101.7 94.9 
Mortgage and asset-backed securities and
   collateralized loan obligations
628.4 598.5 
Total fixed maturity investments$2,198.4 $2,109.3 

The following tables present the cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses), and carrying valuesvalue of common equity securities, White Mountains’s investment in MediaAlpha and other long-term investments as of December 31, 20212023 and 2020:2022:
December 31, 2021
MillionsCost or
Amortized Cost
Gross Unrealized
Gains
Gross Unrealized LossesNet Foreign
Currency Gains (Losses)
Carrying
Value
Common equity securities$236.3 $16.1 $ $(1.3)$251.1 
Investment in MediaAlpha
$ $261.6 $ $ $261.6 
Other long-term investments$1,186.7 $239.0 $(44.1)$(3.8)$1,377.8 
December 31, 2023December 31, 2023
MillionsMillionsCost or
Amortized Cost
Gross Unrealized
Gains
Gross Unrealized LossesNet Foreign
Currency Gains (Losses)
Carrying
Value
Common equity securities
Common equity securities
Common equity securities
Investment in MediaAlpha
December 31, 2020
MillionsCost or
Amortized Cost
Gross Unrealized
Gains
Gross Unrealized LossesNet Foreign
Currency Gains (Losses)
Carrying
Value
Investment in MediaAlpha
$— $802.2 $— $— $802.2 
Other long-term investments
Other long-term investmentsOther long-term investments$767.4 $95.8 $(78.1)$1.7 $786.8 
Other long-term investments

Fair Value Measurements
December 31, 2022
MillionsCost or
Amortized Cost
Gross Unrealized
Gains
Gross Unrealized LossesNet Foreign
Currency Gains (Losses)
Carrying
Value
Common equity securities$660.6 $26.7 $(8.4)$(10.5)$668.4 
Investment in MediaAlpha
$— $168.6 $— $— $168.6 
Other long-term investments$1,340.8 $271.1 $(107.1)$(16.8)$1,488.0 
As of December 31, 2021 and 2020, White Mountains used quoted market prices or other observable inputs to determine fair value for approximately 68% and 73% of the investment portfolio. See Note 1 — “Basis of Presentation and Significant Accounting Policies”.

F - 2423


Fair Value MeasurementsDebt Securities Issued by LevelCorporations
The following tables present White Mountains’s fair value measurements for investments as of December 31, 2021 and 2020 by level. The major security types were based on the legal form of the securities. White Mountains has disaggregated its fixed maturity investments based on the issuing entity type, which impacts credit quality, with debt securities issued by U.S. government entities carrying minimalcorporations is determined from a pricing evaluation technique that uses information from market sources and integrates relative credit risk, while theinformation, observed market movements, and sector news. Key inputs include benchmark yields, reported trades, broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including sector, coupon, credit quality ratings, duration, credit enhancements, early redemption features and other risks associatedmarket research publications.

Municipal Obligations
The fair value of municipal obligations is determined from a pricing evaluation technique that uses information from market makers, brokers-dealers, buy-side firms, and analysts along with other issuers, suchgeneral market information. Key inputs include benchmark yields, reported trades, issuer financial statements, material event notices and new issue data, as corporations, municipalities or entities issuingwell as broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including type, coupon, credit quality ratings, duration, credit enhancements, geographic location and market research publications.

F - 11


Mortgage and Asset-Backed Securities and Collateralized Loan Obligations
The fair value of mortgage and asset-backed securities varyand collateralized loan obligations is determined from a pricing evaluation technique that uses information from market sources and leveraging similar securities. Key inputs include benchmark yields, reported trades, underlying tranche cash flow data, collateral performance, plus new issue data, as well as broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including issuer, vintage, loan type, collateral attributes, prepayment speeds, default rates, recovery rates, cash flow stress testing, credit quality ratings and market research publications.

Level 3 Measurements
Fair value estimates for investments that trade infrequently and have few or no quoted market prices or other observable inputs are classified as Level 3 measurements. Investments valued using Level 3 fair value estimates are based upon unobservable inputs and include investments in certain fixed maturity investments, common equity securities and other long-term investments where quoted market prices or other observable inputs are unavailable or are not considered reliable or reasonable.
Level 3 valuations are generated from techniques that use assumptions not observable in the market. These unobservable inputs reflect White Mountains’s assumptions of what market participants would use in valuing the investment. In certain circumstances, investment securities may start out as Level 3 when they are originally issued, but as observable inputs become available in the market, they may be reclassified to Level 2. Transfers of securities between levels are based on investments held as of the beginning of the period.

Other Long-Term Investments
As of December 31, 2023, $1,138.2 million of White Mountains’s other long-term investments, which consisted primarily of unconsolidated entities, including Kudu’s Participation Contracts and PassportCard/DavidShield were classified as Level 3 investments in the GAAP fair value hierarchy. The determination of the fair value of these securities involves significant management judgment, and the use of valuation analyses and assumptions that are inherently subjective and uncertain.
White Mountains may use a variety of valuation techniques to determine fair value depending on the nature of the issuing entity type.investment, including a discounted cash flow analysis, market multiple approach, cost approach and/or liquidation analysis. On an ongoing basis, White Mountains further disaggregates debt securities issued by corporations by industry sector because investors often reference commonly used benchmarksalso considers qualitative changes in facts and their subsectorscircumstances, which may impact the valuation of its unconsolidated entities, including economic and market changes in relevant industries, changes to monitor riskthe entity’s capital structure, business strategy and performance. Accordingly,key personnel, and any recent transactions. On a quarterly basis, White Mountains has further disaggregated this asset class into subclasses basedevaluates the most recent qualitative and quantitative information of the business and completes a fair valuation analysis for all other long-term investments classified as Level 3 investments. Periodically, and at least on the similar sectors and industry classifications itan annual basis, White Mountains uses a third-party valuation firm to evaluate investment risk and performance against commonly used benchmarks, such as the Bloomberg Barclays U.S. Intermediate Aggregate.
December 31, 2021
MillionsFair ValueLevel 1Level 2Level 3
Fixed maturity investments:
U.S. Government and agency obligations$211.5 $211.5 $ $ 
Debt securities issued by corporations: 
Financials264.2  264.2  
Consumer178.1  178.1  
Technology117.9  117.9  
Industrial112.9  112.9  
Healthcare112.8  112.8  
Utilities70.9  70.9  
Communications56.0  56.0  
Energy48.0  48.0  
Materials32.1  32.1  
Total debt securities issued by corporations992.9  992.9  
Municipal obligations291.9  291.9  
Mortgage and asset-backed securities277.6  277.6  
Collateralized loan obligations135.0  135.0  
Total fixed maturity investments1,908.9 211.5 1,697.4  
Short-term investments465.9 465.9   
Common equity securities (1)
251.1  251.1  
Investment in MediaAlpha261.6 261.6   
Other long-term investments895.3  4.7 890.6 
Other long-term investments NAV(2)
482.5    
Total other long-term investments1,377.8  4.7 890.6 
Total investments$4,265.3 $939.0 $1,953.2 $890.6 
complete an independent valuation analysis of significant unconsolidated entities.
(1)
Consist
Other Long-term Investments - NAV
As of December 31, 2023, $833.8 million of White Mountains’s other long-term investments, in listed funds that predominantly invest in international equities.
(2) Consistswhich consisted of a bank loan fund, private equity funds and hedge funds, a hedgebank loan fund, Lloyd’s trust deposits and ILS funds, for whichwere valued at fair value is measured atusing NAV using theas a practical expedient. Investments for which fair value is measured atusing NAV as a practical expedient are not classified within the fair value hierarchy.
White Mountains employs a number of procedures to assess the reasonableness of the fair value measurements for other long-term investments measured at NAV, including obtaining and reviewing interim unaudited and annual audited financial statements as well as periodically discussing the valuations and methodologies used to value the underlying investments of each fund with fund managers. However, since fund managers do not provide sufficient information to evaluate the pricing methods and inputs for each underlying investment, White Mountains considers the valuation inputs to be unobservable. The fair value of White Mountains’s other long-term investments measured at NAV are generally determined using the fund manager’s NAV. In the event that White Mountains believes the fair value of the fund differs from the NAV reported by the fund manager due to illiquidity or other factors, White Mountains will make an adjustment to the reported NAV to more appropriately represent the fair value of its other long-term investment.

Cash and Restricted Cash
Cash includes amounts on hand and demand deposits with banks and other financial institutions. Amounts presented in the statement of cash flows are shown net of balances acquired and sold in the purchase or sale of the Company’s consolidated subsidiaries.
Cash balances that are not immediately available for general corporate and operating purposes are classified as restricted.

F - 2512


December 31, 2020
MillionsFair ValueLevel 1Level 2Level 3
Fixed maturity investments:    
U.S. Government and agency obligations$176.3 $176.3 $— $— 
Debt securities issued by corporations:    
Financials133.9 — 133.9 — 
Consumer81.9 — 81.9 — 
Industrial66.9 — 66.9 — 
Technology66.7 — 66.7 — 
Healthcare51.5 — 51.5 — 
Communications44.5 — 44.5 — 
Energy35.8 — 35.8 — 
Materials33.9 — 33.9 — 
Utilities32.3 — 32.3 — 
Total debt securities issued by corporations547.4 — 547.4 — 
Municipal obligations265.0 — 265.0 — 
Mortgage and asset-backed securities218.5 — 218.5 — 
Total fixed maturity investments1,207.2 176.3 1,030.9 — 
Short-term investments142.8 142.8 — — 
Investment in MediaAlpha802.2 802.2 — — 
Other long-term investments614.2 — — 614.2 
Other long-term investments �� NAV (1)
172.6 — — — 
Total other long-term investments786.8 — — 614.2 
Total investments$2,939.0 $1,121.3 $1,030.9 $614.2 
Derivatives
(1) Consists of private equity funds and ILS fundsFrom time to time, White Mountains holds derivative financial instruments for whichrisk management purposes. White Mountains recognizes all derivatives as either assets or liabilities, measured at fair value, is measured at NAV using the practical expedient. Investments for which fair value is measured at NAV are not classified withinon its consolidated balance sheet. Changes in the fair value hierarchy.of derivative instruments that meet the criteria for hedge accounting are recognized in other comprehensive income (loss) and reclassified into current period pre-tax income (loss) when the hedged items are recognized therein. Changes in the fair value of derivative instruments that do not meet the criteria for hedge accounting are recognized in current period pre-tax income (loss).
As of December 31, 2023, White Mountains holds an interest rate cap derivative instrument that does not meet the criteria for hedge accounting. See Note 9 — “Derivatives”.

Investments HeldMunicipal Bond Guarantee Insurance
All of the contracts issued by BAM are accounted for as insurance contracts under ASC 944-605, Financial Guarantee Insurance Contracts. For capital appreciation bonds, par is adjusted to the estimated equivalent par value for current interest paying bonds. See Note 10 — “Municipal Bond Guarantee Insurance”.
Premiums are generally received upfront and an unearned premium revenue liability, equal to the amount of the premium received, is established at contract inception. Premium revenues are recognized in revenue over the period of the contracts in proportion to the amount of insurance protection provided using a constant rate. The constant rate is calculated based on Deposit orthe relationship between the par outstanding in a given reporting period compared with the sum of each of the par amounts outstanding for all periods.
Insurance premiums receivable represents amounts due from customers for municipal bond insurance policies. Installment premiums are measured at the present value of contractual premiums, discounted at the risk-free rate, which is set at the inception of the insurance contract.
Deferred acquisition costs represent commissions, premium taxes, excise taxes and other costs which are directly attributable to and vary with the production of business. These costs are deferred and amortized to the extent they relate to successful contract acquisitions over the applicable premium recognition period as Collateralacquisition expenses. Deferred acquisition costs are limited to the amount expected to be recovered from future earned premiums and anticipated investment income. A premium deficiency is recognized if the sum of expected loss and loss adjustment expenses (“LAE”), expected dividends to policyholders, unamortized acquisition costs, and maintenance costs exceeds related unearned premiums and anticipated investment income. A premium deficiency is recognized by charging any unamortized acquisition costs to expense to the extent required in order to eliminate the deficiency. If the premium deficiency exceeds unamortized acquisition costs then a liability is accrued for the excess deficiency.

Loss reserves are recorded only to the extent that the present value of any payments projected to be made by BAM, net of any expected recoveries, exceeds the associated unearned premium reserve. As of December 31, 20212023 and 2020, investments2022, BAM did not have any loss or loss adjustment expense reserves.

Property and Casualty Insurance and Reinsurance
Ark writes a diversified portfolio of $479.5 millionreinsurance and $432.4 million, were heldinsurance products, including property, specialty, marine & energy, casualty and accident & health.
Ark accounts for insurance and reinsurance policies that it writes in trusts requiredaccordance with ASC 944, Financial Services - Insurance. Ark’s premiums written comprise premiums on insurance contracts incepted during the year as well as premium adjustments related to prior underwriting years. Insurance premiums are recognized as revenues over the loss exposure or coverage period. In most cases, premiums are earned ratably over the term of the contract, with unearned premiums calculated on a monthly pro-rata basis. Catastrophe premiums are earned in proportion to the insurance protection provided. Premiums earned are presented net of amounts ceded to reinsurers. Insurance premiums receivable, representing amounts due from insureds, are presented net of an allowance for uncollectible premiums, including expected credit losses. The allowance is based upon Ark’s ongoing review of amounts outstanding, historical loss data, including delinquencies and write-offs, current and forecasted economic conditions and other relevant factors. Credit risk is partially mitigated by Ark’s ability to cancel the policy if the policyholder does not pay the premium.
Deferred acquisition costs comprise commission and brokerage fees and taxes which are directly attributable to and vary with the production of business. These costs are deferred and amortized to the extent they relate to successful contract acquisitions over the applicable premium recognition period as insurance and reinsurance acquisition expenses. Deferred acquisition costs are limited to the amount expected to be maintainedrecovered from future earned premiums and anticipated investment income. A premium deficiency is recognized if the sum of expected loss and LAE, expected dividends to policyholders, unamortized acquisition costs and maintenance costs exceeds related unearned premiums and anticipated investment income. A premium deficiency is recognized by charging any unamortized acquisition costs to expense to the extent required in relationorder to HG Global’seliminate the deficiency. If the premium deficiency exceeds unamortized acquisition costs, then a liability is accrued for the excess deficiency.
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Losses and LAE are charged against income as incurred. Unpaid losses and LAE, including estimates for amounts incurred but not reported (“IBNR”), are based on estimates of the ultimate costs of settling claims, including the effects of inflation and other societal and economic factors. Unpaid loss and LAE reserves represent management’s best estimate of ultimate losses and LAE, net of estimated salvage and subrogation recoveries, if applicable. Such estimates are regularly reviewed and updated, and any resulting adjustments are reflected in current results of operations. The process of estimating loss and LAE involves a considerable degree of judgment by management, and the ultimate amount of expense to be incurred could be considerably greater than or less than the amounts currently reflected in the financial statements. See Note 5 — “Loss and Loss Adjustment Expense Reserves”.
As part of its enterprise risk management function, Ark purchases reinsurance for risk mitigation purposes. Ark utilizes reinsurance and retrocessional agreements to reduce earnings volatility, protect capital, limit its exposure to risk concentration and accumulation of loss and manage within its overall internal risk tolerances or those set and agreed by regulators, ratings agencies and Lloyd’s. Ark also enters into reinsurance and retrocessional agreements to reduce its liability on individual risks and enable it to underwrite policies with higher limits where Ark believes this has a broader business benefit. Ark seeks to protect its downside risk from catastrophes and large loss events by purchasing reinsurance, including excess of loss protections, aggregate covers and industry loss warranties. Ark also considers alternative structures such as collateralized reinsurance, retrocessional reinsurance and catastrophe bonds. The purchase of reinsurance does not discharge Ark from its primary liability for the full value of its policies, and thus the collectability of balances due from Ark’s reinsurers is critical to its financial strength. Ark monitors the financial strength and ratings of its reinsurers on an ongoing basis. See Note 6 — “Third-Party Reinsurance”.
For the years of account prior to the Ark Transaction, a significant proportion of the Syndicates’ underwriting capital was provided by TPC Providers using whole account reinsurance contracts with Ark’s corporate member. For the years of account subsequent to the Ark Transaction, Ark is no longer using TPC Providers to provide underwriting capital for the Syndicates. Captions within results of operations and other comprehensive income are shown net of amounts relating to the TPC Providers share of the Syndicates’ results, including investment results.
Reinsurance recoverables represent paid losses and LAE, case reserves and IBNR reserves ceded to reinsurers under reinsurance treaties. Amounts recoverable from reinsurers are estimated in a manner consistent with the associated claims liability. Ark reports its reinsurance recoverables net of an allowance for estimated uncollectible reinsurance, including expected credit losses and coverage disputes. The allowance is based upon Ark’s ongoing review of amounts outstanding, length of collection periods, changes in reinsurer credit standing, disputes, applicable coverage defenses and other relevant factors.

Reinsurance Contracts Accounted for as Deposits
Reinsurance contracts that do not meet the risk transfer requirements necessary to be accounted for as reinsurance are accounted for using the deposit method. Under the deposit method, ceded premiums paid are not recognized through income but rather treated as a deposit.
BAM entered into three ceded reinsurance agreements with Fidus Re Ltd. (“Fidus Re”), a Bermuda-based special purpose insurer created in 2018 solely to provide reinsurance protection to BAM. BAM also entered into an excess of loss reinsurance agreement (the “XOLT”) with HG Re. The financing expenses paid by BAM under these reinsurance agreements are recorded in general and administrative expenses. See Note 10 — “Municipal Bond Guarantee Insurance”.
BAMArk has an aggregate excess of loss contract with SiriusPoint Ltd. (“SiriusPoint”), formerly Third Point Reinsurance Ltd., which is accounted for using the deposit method and onerecorded within other assets. Ark earns an annual crediting rate of 3.0%, which is recorded within other revenue. See Note 6 — “Third-Party Reinsurance”.

Revenue Recognition
Kudu’s revenues are primarily generated from Participation Contracts, which are noncontrolling equity interests in revenue and earnings participation contracts with asset and wealth management firms. Kudu’s Participation Contracts are measured at fair value with the change therein recognized within net realized and unrealized investment gains (losses). Distributions from Kudu’s clients are recognized through investment income when Kudu’s right to receive payment has been established and can be reliably measured, which generally occurs on a quarterly basis in accordance with the terms of the Participation Contracts.
White Mountains’s Other Operating BusinessesOperations recognizes agent commissions and other revenues when it has satisfied its performance obligations. Deferred revenues associated with unsatisfied performance obligations are requiredrecognized within other liabilities.

Cost of Sales
White Mountains’s Other Operations’ cost of sales consists of salaries and related expenses, professional services and marketing and advertising expenses directly related to maintain deposits with certain insurance regulatory agencies in ordersales generation. These expenses are recognized as incurred.
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Goodwill and Other Intangible Assets
Goodwill represents the excess of the amount paid to maintain their insurance licenses. Theacquire subsidiaries over the fair value of identifiable net assets at the date of acquisition. Other intangible assets consist primarily of underwriting capacity, customer relationships and trade names.
Goodwill and other intangible assets with indefinite lives are not amortized, but rather are evaluated for impairment on an annual basis, or whenever indications of potential impairment exist. In the absence of any indications of potential impairment, the evaluation of goodwill and indefinite-lived intangible assets is performed no later than the interim period in which the anniversary of the acquisition date falls. White Mountains initially evaluates goodwill using a qualitative approach (step zero) to determine whether it is more likely than not that the implied fair value of goodwill is greater than its carrying value. If White Mountains determines, based on this qualitative review, that it is more likely than not that an impairment may exist, then White Mountains performs a quantitative analysis to compare the fair value of a reporting unit with its carrying value. If the carrying value exceeds the estimated fair value, then an impairment charge is recognized through current period pre-tax income (loss).
Other intangible assets with finite lives are initially measured at their acquisition date fair values and subsequently amortized over their economic lives. Other intangible assets with finite lives are presented net of accumulated amortization on the balance sheet. Other intangible assets with finite lives are reviewed for impairment when events occur or there are changes in circumstances indicating that their carrying value may exceed fair value. Impairment exists when the carrying value of other intangible assets exceeds fair value. See Note 4 — “Goodwill and Other Intangible Assets”.
Incentive Compensation
White Mountains’s Long-Term Incentive Plan (the “WTM Incentive Plan”) provides for grants of various types of share-based and non-share-based incentive awards to key employees of White Mountains. Non-share-based awards are recognized over the related service periods based on management’s best estimate of the amounts at which the awards are expected to be paid. Share-based compensation which is typically settled in cash, such deposits, which represent state depositsas performance shares, is classified as a liability-type award. The compensation cost for liability-classified awards is measured initially at the grant date fair value and are included withinremeasured each reporting period until settlement. The compensation cost for equity-classified awards expected to be settled in shares, such as options and restricted shares, is measured at the investment portfolio, totaled $4.8 million and $11.9 million asoriginal grant date fair value of December 31, 2021 and 2020.
Lloyd’s trust deposits are required of Lloyd's syndicates to protect policyholders in non-U.K. markets and are pledged into Lloyd’s trust accounts to provide athe award. The compensation cost for all awards is recognized for the vested portion of the capital neededawards over the related service periods. See Note 12 — “Employee Share-Based Incentive Compensation Plans”.

Income Taxes
White Mountains has subsidiaries and branches that operate in various jurisdictions around the world and are subject to support obligations at Lloyd’s.tax in the jurisdictions in which they operate.  As of December 31, 2021, Ark held Lloyd’s trust deposits with2023, the primary jurisdictions in which the Company’s subsidiaries and branches operate and were subject to tax include Israel, Luxembourg, the United Kingdom and the United States. Income earned or losses generated by companies outside the United States are generally subject to an overall effective tax rate lower than that imposed by the United States.
Deferred tax assets and liabilities are recorded when a fair valuedifference between the carrying amounts of $113.8 million.
assets and liabilities for financial reporting purposes and the amounts for tax purposes exists, and for other temporary differences. The underwriting capacitydeferred tax asset or liability is recorded based on tax rates expected to be in effect when the difference reverses. Deferred tax assets represent amounts available to reduce income taxes payable in future periods. White Mountains records a valuation allowance against deferred tax assets if it becomes more likely than not that all or a portion of a member of Lloyd’s mustdeferred tax asset will not be supported by providing a deposit (“Funds at Lloyd’s”)realized. Changes in valuation allowances from period to period are included in income tax expense in the formperiod of cash, securities or letters of credit in an amount determined by Lloyd’s. The amount of such deposit is calculated for each member through the completion of an annual capital adequacy exercise. These requirements allow Lloyd’s to evaluate that each member has sufficient assets to meet its underwriting liabilities plus a required solvency margin. As of December 31, 2021, the fair value of Ark’s Funds at Lloyd’s investment deposits totaled $342.8 million.
As at December 31, 2021, Ark has $50.0 million of short-term investments pledged as collateral under an uncommitted stand by letter of credit.change. See Note 78“Debt”“Income Taxes”.

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Leases
White Mountains has entered into lease agreements, primarily for office space and equipment. These leases are classified as operating leases, with lease expense recognized on a straight-line basis over the term of the lease. Lease assets and liabilities are not recorded for leases with a term at inception of one year or less. Lease incentives, such as free rent or landlord reimbursements for leasehold improvements, are recognized at lease inception and amortized on a straight-line basis over the term of the lease. Lease expense and the amortization of leasehold improvements are recognized within general and administrative expenses. Lease payments related to options to extend or renew the lease term are excluded from the calculation of lease liabilities unless White Mountains is reasonably certain of exercising those options.
As of December 31, 2023 and 2022, the right-of-use (“ROU”) assets were $20.3 million and $25.2 million, and the lease liabilities were $22.0 million and $27.1 million.

Noncontrolling Interests
Noncontrolling interests consist of the ownership interests of noncontrolling shareholders in consolidated subsidiaries and are presented separately on the balance sheet. The portion of comprehensive income (loss) attributable to noncontrolling interests is presented net of related income taxes in the statement of operations and comprehensive income (loss). See Note 13 — “Common Shareholders’ Equity and Noncontrolling Interests”.

Foreign Currency Exchange
The functional currencies for White Mountains’s non-U.S. based subsidiaries are measured, in most instances, using currencies other than the U.S. dollar. Net foreign exchange gains and losses arising from the translation of functional currencies are generally reported in shareholders’ equity, in accumulated other comprehensive income (loss).
White Mountains also invests in securities denominated in foreign currencies. Assets and liabilities recorded in these foreign currencies are translated into U.S. dollars at exchange rates in effect at the balance sheet date, and revenues and expenses are converted using the weighted average exchange rates for the period.
As of December 31, 2023 and 2022, White Mountains had unrealized foreign currency translation losses of $1.6 million and $3.5 million recorded in accumulated other comprehensive income (loss) on its consolidated balance sheet.

Fair Value Measurements
Fair value measurements are categorized into a hierarchy that distinguishes between inputs based on market data from independent sources (observable inputs) and a reporting entity’s internal assumptions based upon the best information available when external market data is limited or unavailable (unobservable inputs). Quoted prices in active markets for identical assets or liabilities have the highest priority (Level 1), followed by observable inputs other than quoted prices, including prices for similar but not identical assets or liabilities (Level 2), and unobservable inputs, including the reporting entity’s estimates of the assumptions that market participants would use, having the lowest priority (Level 3). See Note 18 — “Fair Value of Financial Instruments”.

Business Combinations
White Mountains accounts for purchases of businesses using the acquisition method, which requires the measurement of assets acquired, including other intangible assets, and liabilities assumed, including contingent liabilities, at their estimated fair values as of the acquisition date. The acquisition date fair values represent management’s best estimates and are based upon established valuation techniques, reasonable assumptions and, where appropriate, valuations performed by independent third parties. In circumstances where additional information is required in order to determine the acquisition date fair value of balance sheet amounts, provisional amounts may be recorded as of the acquisition date and may be subject to subsequent adjustment throughout the measurement period, which is up to one year from the acquisition date. Measurement period adjustments are recognized in the period in which they are determined. The results of operations and cash flows of businesses acquired are included in the consolidated financial statements from the date of acquisition. White Mountains accounts for purchases of other intangible assets that do not meet the definition of a business as asset acquisitions. Asset acquisitions are recognized at the amount of consideration paid, which is deemed to equal fair value.

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Note 2. Significant Transactions

Bamboo Transaction

On October 19, 2023, White Mountains entered into an agreement and plan of merger (the “Bamboo Merger Agreement”) with Bamboo Ide8 Insurance Services LLC (“Bamboo MGA”) and John Chu, as the unitholders’ representative. Under the terms of the Bamboo Merger Agreement, White Mountains’s wholly-owned subsidiary, WM Pierce Merger Sub LLC, agreed to merge with and into Bamboo MGA, with Bamboo MGA continuing as the surviving company (the “Bamboo Merger”). Concurrently with the execution of the Bamboo Merger Agreement, certain Bamboo management unitholders agreed to rollover the majority of their existing equity in Bamboo MGA into PM Holdings LLC (“Bamboo Holdings”) (collectively with Bamboo MGA and Ide8 Limited (“Bamboo Captive”), “Bamboo”). White Mountains also agreed to make an equity contribution to Bamboo immediately following the Bamboo Merger (together with the Bamboo Merger and the rollover transactions, the “Bamboo Transaction”).
On January 2, 2024, White Mountains closed the Bamboo Transaction in accordance with the terms of the Bamboo Merger Agreement, investing $296.7 million in equity into Bamboo, which included the contribution of $36.0 million to retire Bamboo’s legacy credit facility and the contribution of $20.0 million of primary capital. The consideration is subject to customary purchase price adjustments. At closing, White Mountains owned 72.8% of Bamboo on a basic shares outstanding basis (63.7% on a fully-diluted/fully-converted basis, taking account of management’s equity incentives). At closing, 16.1% of basic shares outstanding are owned by Bamboo management (26.6% on a fully-diluted/fully-converted basis).
Bamboo is a capital-light, tech- and data-enabled insurance distribution platform providing homeowners’ insurance and related products to the residential property market in California. Bamboo operates primarily through Bamboo MGA, its full-service MGA business, where the company manages all aspects of the placement process on behalf of its fronting and reinsurance partners, including product development, marketing, underwriting, policy issuance and claims oversight, and it earns commissions based on the volume and profitability of the insurance that it places. It offers both admitted and non-admitted insurance products. Bamboo also operates two separate but integrated business models: (i) a retail agency, within Bamboo MGA, offering ancillary products (e.g., flood, earthquake) on behalf of third parties and (ii) Bamboo Captive, a Bermuda-domiciled captive reinsurer that participates in the underwriting risk of Bamboo’s MGA programs to align interests with reinsurance partners. Bamboo will be consolidated and presented as a reportable segment for periods after December 31, 2023.

NSM

On August 1, 2022, the NSM Transaction closed. White Mountains received $1.4 billion in net cash proceeds at closing and recognized a net transaction gain of $875.7 million, which was comprised of $886.8 million of net gain from sale of discontinued operations and $2.9 million of comprehensive income related to the recognition of foreign currency translation gains (losses) from the sale, partially offset by $14.0 million of compensation and other costs related to the transaction recorded in Other Operations.
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WM Outrigger Re

During the fourth quarter of 2022, Ark sponsored the formation of Outrigger Re Ltd., a Bermuda company registered as a special purpose insurer and segregated accounts company, to provide reinsurance capacity to Ark. On December 20, 2022, Outrigger Re Ltd. issued $250 million of non-voting redeemable preference shares on behalf of four segregated accounts to White Mountains and unrelated third-party investors. Upon issuance of the preference shares, Outrigger Re Ltd. entered into collateralized quota share agreements with GAIL to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2023 underwriting year. The proceeds from the issuance of the preference shares were deposited into collateral trust accounts to fund any potential obligations under the reinsurance agreements with GAIL. Outrigger Re Ltd.’s obligations under the reinsurance agreements with GAIL are subject to an aggregate limit equal to the assets in the collateral trusts. The terms of the reinsurance agreements are renewable upon the mutual agreement of Ark and the applicable preference shareholder of Outrigger Re Ltd.
During the fourth quarter of 2022, White Mountains purchased 100% of the preference shares linked to its segregated account, WM Outrigger Re, for $205.0 million. White Mountains consolidates WM Outrigger Re’s results in its financial statements. WM Outrigger Re’s quota share reinsurance agreement with GAIL eliminates in White Mountains’s consolidated financial statements.
During the fourth quarter of 2023, Ark renewed Outrigger Re Ltd. to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2024 underwriting year. Outrigger Re Ltd. was capitalized with $250.0 million for business written in the 2024 underwriting year, of which White Mountains rolled over $130.0 million from its commitment to the 2023 underwriting year. The remaining capital was provided by new and continuing unrelated third-party investors.
As of December 31, 2023 and 2022, short-term investments of $265.3 million and $203.7 million were held in a collateral trust, after expenses of $1.3 million.
During January 2024, White Mountains received an initial return of capital of $68.1 million from WM Outrigger Re for business written in the 2023 underwriting year. White Mountains expects to receive any additional return of capital and associated profits from business written in the 2023 underwriting year beginning in the second quarter of 2024.

Ark

On October 1, 2020, White Mountains entered into a subscription and purchase agreement (the “Ark SPA”) with Ark and certain selling shareholders (collectively with Ark, the “Ark Sellers”). Under the terms of the Ark SPA, White Mountains agreed to contribute $605.4 million of equity capital to Ark, at a pre-money valuation of $300.0 million, and to purchase $40.9 million of shares from the Ark Sellers. White Mountains also agreed to contribute up to an additional $200.0 million of equity capital to Ark in 2021. In accordance with the Ark SPA, in the fourth quarter of 2020 White Mountains pre-funded/placed in escrow a total of $646.3 million in preparation for closing the transaction, including $280.0 million funded directly to Lloyd’s on behalf of Ark under the terms of a credit facility agreement and $366.3 million placed in escrow, which is reflected on the balance sheet within Other Operations as of December 31, 2020.
On January 1, 2021, White Mountains completed the Ark Transaction in accordance with the terms of the Ark SPA. As of December 31, 2021, White Mountains owned 72.0% of Ark on a basic shares outstanding basis (63.0% after taking account of management’s equity incentives). The remaining shares are owned by employees. In the future, management rollover shareholders could earn additional shares in Ark if and to the extent that White Mountains achieves certain thresholds for its multiple of invested capital return. If fully earned, these additional shares would represent 12.5% of the shares outstanding at closing.
White Mountains recognized total assets acquired related to the Ark Transaction of $2.5 billion, including goodwill and other intangible assets of $292.5 million, and total liabilities of $1.7 billion, including contingent consideration of $22.5 million and noncontrolling interest of $220.2 million. Ark incurred transaction costs of $25.3 million in the first quarter of 2021.
In the third quarter of 2021, Ark issued $163.3 million of floating rate unsecured subordinated notes (the “Ark 2021 Subordinated Notes”) in three separate transactions. See Note 7 — “Debt”. In connection with the issuance of the Ark 2021 Subordinated Notes, White Mountains and Ark terminated White Mountains’s commitment to provide up to $200.0 million of additional equity capital to Ark in 2021.
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The following presents additional details of the assets acquired and liabilities assumed as of the January 1, 2021 acquisition date:
MillionsAs of January 1, 2021
Investments$594.3
Cash52.0(1)
Reinsurance recoverables433.4
Insurance premiums receivable236.7
Ceded unearned premiums170.2
Value of in-force business acquired71.7
Other assets88.9
Loss and loss adjustment expense reserves(696.0)
Unearned insurance premiums(326.1)
Debt(46.4)
Ceded reinsurance payable(528.3)
Other liabilities(25.9)
   Net tangible assets acquired24.5
Goodwill116.8
Other intangible assets - syndicate underwriting capacity175.7
Deferred tax liability on other intangible assets(33.4)
  Net assets acquired$283.6
(1) Cash excludes the White Mountains cash contribution of $605.4 as part of the Ark Transaction.

The values of net tangible assets acquired and the resulting goodwill, other intangible assets and contingent consideration were recorded at fair value using Level 3 inputs. The majority of the tangible assets acquired and liabilities assumed were recorded at their carrying values, as their carrying values approximated their fair values due to their short-term nature. The fair values of other intangible assets and the contingent consideration liability were estimated primarily based on the income approach. The income approach estimates fair value based on the present value of the cash flows that the assets are expected to generate in the future. White Mountains developed internal estimates for the expected future cash flows and discount rates used in the present value calculations.
The value of in-force business acquired represents the estimated profits relating to the unexpired contracts, net of related prepaid reinsurance, at the acquisition date through the expiration date of the contracts. During the years ended December 31, 2023, 2022 and 2021, Ark recognized $0.0 million, $7.5 million and $64.2 million of amortization expense on the value of in-force business acquired. The value of the syndicate underwriting capacity intangible asset was estimated using net cash flows attributable to Ark’s rights to write business in the Lloyd’s market. The value of the in-force business acquired and the syndicate underwriting capacity were estimated using a discounted cash flow method. Significant inputs to the valuation models include estimates of growth in premium revenues, investment returns, claims costs, expenses and discount rates based on a weighted average cost of capital.
In evaluating the fair value of Ark’s loss and loss adjustment expense reserves, White Mountains determined that the risk-free rate of interest was approximately equal to the risk factor reflecting the uncertainty within the reserves, and thus no adjustment was necessary. During the years ended December 31, 2023, 2022 and 2021, Ark recognized pre-tax expense of $48.7 million, $17.3 million and $5.5 million for the change in the fair value of its contingent consideration liabilities. Any future adjustments to contingent consideration liabilities will be recognized through pre-tax income (loss). As of December 31, 2023 and 2022, Ark recognized total contingent consideration liabilities of $94.0 million and $45.3 million.
Ark’s segment income and expenses for 2023, 2022 and 2021 are presented in Note 15 — “Segment Information.”


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Kudu

On May 26, 2022, Kudu raised $114.5 million of equity capital (the “Kudu Transaction”) from Massachusetts Mutual Life Insurance Company (“Mass Mutual”), White Mountains and Kudu management. Mass Mutual, White Mountains and Kudu management contributed $64.1 million, $50.0 million and $0.4 million at a pre-money valuation of 1.3x book value, or $114.0 million, above the December 31, 2021 equity value of Kudu’s go-forward portfolio of Participation Contracts. The go-forward portfolio of Kudu’s Participation Contracts excluded $54.3 million of enterprise value as of December 31, 2021 relating to two portfolio companies that had announced sale transactions prior to the capital raise. As a result of the Kudu Transaction, White Mountains’s basic ownership of Kudu decreased from 99.1% to 89.3%.

Note 3. Investment Securities

White Mountains’s portfolio of investment securities held for general investment purposes consists of fixed maturity investments, short-term investments, common equity securities, its investment in MediaAlpha and other long-term investments.White Mountains’s portfolio of fixed maturity investments, including those within short-term investments, are classified as trading securities. Trading securities are reported at fair value as of the balance sheet date. Short-term investments also include interest-bearing money market funds and certificates of deposit that are carried at fair value. White Mountains’s portfolio of common equity securities, its investment in MediaAlpha and other long-term investments are measured at fair value.Other long-term investments consist primarily of unconsolidated entities, Kudu’s Participation Contracts, private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits, ILS funds and private debt instruments.White Mountains has taken the fair value option for its equity method eligible investments. See Note 16 — Equity Method Eligible Investments”. Net realized and unrealized investment gains (losses) are reported in pre-tax revenues.

Net Investment Income

White Mountains’s net investment income is comprised primarily of interest income associated with White Mountains’s fixed maturity investments and short-term investments, dividend income from common equity securities and distributions from other long-term investments.
The following table presents pre-tax net investment income for the years ended December 31, 2023, 2022 and 2021:

Year Ended December 31,
Millions202320222021
Fixed maturity investments$64.4 $41.4 $28.8 
Short-term investments52.0 16.4 .6 
Common equity securities4.1 1.6 .1 
Other long-term investments76.1 68.1 56.3 
Amount attributable to TPC Providers (1.0)(1.0)
Total investment income196.6 126.5 84.8 
Third-party investment expenses(2.4)(2.1)(2.3)
Net investment income, pre-tax$194.2 $124.4 $82.5 

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Net Realized and Unrealized Investment Gains (Losses)

The following table presents net realized and unrealized investment gains (losses) for the years ended December 31, 2023, 2022 and 2021:

Year Ended December 31,
Millions202320222021
Realized investment gains (losses)
Fixed maturity investments$(4.7)$(11.9)$3.9 
Short-term investments(.2)(1.4)(.1)
Common equity securities29.5 — .4 
Investment in MediaAlpha — 160.3 
Other long-term investments72.2 128.4 (7.7)
Net realized investment gains (losses)96.8 115.1 156.8 
Unrealized investment gains (losses)
Fixed maturity investments66.1 (168.4)(42.2)
Short-term investments1.9 (1.1)— 
Common equity securities47.1 (7.1)14.9 
Investment in MediaAlpha27.1 (93.0)(540.6)
Other long-term investments195.2 (43.8)172.7 
Net unrealized investment gains (losses)337.4 (313.4)(395.2)
Net realized and unrealized investment gains (losses), before
   amount attributable to TPC providers (1)
434.2 (198.3)(238.4)
Amount attributable to TPC Providers 6.8 (7.7)
Net realized and unrealized investment gains (losses)
$434.2 $(191.5)$(246.1)
Fixed maturity and short-term investments
   Net realized and unrealized investment gains (losses)$63.1 $(182.8)$(38.4)
Less: net realized and unrealized gains (losses) on investment
   securities sold during the period
4.7 (2.9)(8.4)
Net unrealized investment gains (losses) recognized during the
   period on investment securities held at the end of the period
$58.4 $(179.9)$(30.0)
Common equity securities and investment in MediaAlpha
Net realized and unrealized investment gains (losses) on
   common equity securities
$76.6 $(7.1)$15.3 
Net realized and unrealized investment gains (losses) from
   investment in MediaAlpha
27.1 (93.0)(380.3)
Total net realized and unrealized investment gains (losses)103.7 (100.1)(365.0)
Less: net realized and unrealized gains (losses) on investment
   securities sold during the period
28.4 — 20.3 
Net unrealized investment gains (losses) recognized during the
   period on investment securities held at the end of the period
$75.3 $(100.1)$(385.3)
(1) For 2023, 2022 and 2021, includes $13.6, $(29.3) and $(7.7) of net realized and unrealized investment gains (losses) related to foreign currency exchange.

For the years ended December 31, 2023, 2022 and 2021, all of White Mountains’s net realized and unrealized investment gains (losses) were recorded in the consolidated statements of operations. There were no investment gains (losses) recorded in other comprehensive income.
White Mountains recognized gross realized investment gains of $113.7 million, $129.9 million and $212.3 million and gross realized investment losses of $16.9 million, $14.8 million and $55.5 million on sales of investment securities for the years ending December 31, 2023, 2022 and 2021.
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The following table presents total net unrealized gains (losses) attributable to Level 3 investments for the years ended December 31, 2023, 2022 and 2021 for investments still held at the end of the period:
Year Ended December 31,
Millions202320222021
Total net unrealized investment gains on other long-term investments held at
   the end of period, pre-tax
$133.9 $56.5 $98.9 

Proceeds from the sales and maturities of investments, excluding short-term investments, totaled $0.8 billion, $0.5 billion and $0.8 billion for the years ended December 31, 2023, 2022 and 2021.

Investment Holdings

The following tables present the cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses) and carrying value of White Mountains’s fixed maturity investments as of December 31, 2023 and 2022:
December 31, 2023
MillionsCost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Net Foreign
Currency
Gains (Losses)
Carrying
Value
U.S. Government and agency obligations$209.0 $.3 $(4.4)$ $204.9 
Debt securities issued by corporations1,085.9 5.6 (45.4)(1.1)1,045.0 
Municipal obligations275.1 .9 (15.1) 260.9 
Mortgage and asset-backed securities417.2 2.0 (29.8) 389.4 
Collateralized loan obligations211.2 .4 (2.4)(.1)209.1 
Total fixed maturity investments$2,198.4 $9.2 $(97.1)$(1.2)$2,109.3 

December 31, 2022
MillionsCost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Net Foreign
Currency
Gains (Losses)
Carrying
Value
U.S. Government and agency obligations$216.6 $— $(10.2)$— $206.4 
Debt securities issued by corporations1,098.3 .6 (78.3)(1.8)1,018.8 
Municipal obligations281.6 .4 (23.4)— 258.6 
Mortgage and asset-backed securities288.7 — (34.5)— 254.2 
Collateralized loan obligations190.8 .1 (6.0)(2.0)182.9 
Total fixed maturity investments$2,076.0 $1.1 $(152.4)$(3.8)$1,920.9 


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The weighted average duration of White Mountains’s fixed income portfolio was 1.9 years, including short-term investments, and 3.3 years, excluding short-term investments, as of December 31, 2023.
The following table presents the cost or amortized cost and carrying value of White Mountains’s fixed maturity investments by contractual maturity as of December 31, 2023. Actual maturities could differ from contractual maturities because borrowers may have the right to call or prepay certain obligations with or without call or prepayment penalties.
December 31, 2023
MillionsCost or Amortized CostCarrying Value
Due in one year or less$319.9 $315.0 
Due after one year through five years845.0 813.9 
Due after five years through ten years303.4 287.0 
Due after ten years101.7 94.9 
Mortgage and asset-backed securities and
   collateralized loan obligations
628.4 598.5 
Total fixed maturity investments$2,198.4 $2,109.3 

The following tables present the cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses) and carrying value of common equity securities, White Mountains’s investment in MediaAlpha and other long-term investments as of December 31, 2023 and 2022:
December 31, 2023
MillionsCost or
Amortized Cost
Gross Unrealized
Gains
Gross Unrealized LossesNet Foreign
Currency Gains (Losses)
Carrying
Value
Common equity securities$483.5 $62.3 $(1.2)$(6.2)$538.4 
Investment in MediaAlpha
$59.2 $195.7 $ $ $254.9 
Other long-term investments$1,655.7 $446.3 $(94.5)$(9.3)$1,998.2 

December 31, 2022
MillionsCost or
Amortized Cost
Gross Unrealized
Gains
Gross Unrealized LossesNet Foreign
Currency Gains (Losses)
Carrying
Value
Common equity securities$660.6 $26.7 $(8.4)$(10.5)$668.4 
Investment in MediaAlpha
$— $168.6 $— $— $168.6 
Other long-term investments$1,340.8 $271.1 $(107.1)$(16.8)$1,488.0 


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Debt Securities Issued by Corporations
The fair value of debt securities issued by corporations is determined from a pricing evaluation technique that uses information from market sources and integrates relative credit information, observed market movements, and sector news. Key inputs include benchmark yields, reported trades, broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including sector, coupon, credit quality ratings, duration, credit enhancements, early redemption features and market research publications.

Municipal Obligations
The fair value of municipal obligations is determined from a pricing evaluation technique that uses information from market makers, brokers-dealers, buy-side firms, and analysts along with general market information. Key inputs include benchmark yields, reported trades, issuer financial statements, material event notices and new issue data, as well as broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including type, coupon, credit quality ratings, duration, credit enhancements, geographic location and market research publications.

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Mortgage and Asset-Backed Securities and Collateralized Loan Obligations
The fair value of mortgage and asset-backed securities and collateralized loan obligations is determined from a pricing evaluation technique that uses information from market sources and leveraging similar securities. Key inputs include benchmark yields, reported trades, underlying tranche cash flow data, collateral performance, plus new issue data, as well as broker-dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including issuer, vintage, loan type, collateral attributes, prepayment speeds, default rates, recovery rates, cash flow stress testing, credit quality ratings and market research publications.

Level 3 Measurements
Fair value estimates for investments that trade infrequently and have few or no quoted market prices or other observable inputs are classified as Level 3 measurements. Investments valued using Level 3 fair value estimates are based upon unobservable inputs and include investments in certain fixed maturity investments, common equity securities and other long-term investments where quoted market prices or other observable inputs are unavailable or are not considered reliable or reasonable.
Level 3 valuations are generated from techniques that use assumptions not observable in the market. These unobservable inputs reflect White Mountains’s assumptions of what market participants would use in valuing the investment. In certain circumstances, investment securities may start out as Level 3 when they are originally issued, but as observable inputs become available in the market, they may be reclassified to Level 2. Transfers of securities between levels are based on investments held as of the beginning of the period.

Other Long-Term Investments
As of December 31, 2023, $1,138.2 million of White Mountains’s other long-term investments, which consisted primarily of unconsolidated entities, including Kudu’s Participation Contracts and PassportCard/DavidShield were classified as Level 3 investments in the GAAP fair value hierarchy. The determination of the fair value of these securities involves significant management judgment, and the use of valuation analyses and assumptions that are inherently subjective and uncertain.
White Mountains may use a variety of valuation techniques to determine fair value depending on the nature of the investment, including a discounted cash flow analysis, market multiple approach, cost approach and/or liquidation analysis. On an ongoing basis, White Mountains also considers qualitative changes in facts and circumstances, which may impact the valuation of its unconsolidated entities, including economic and market changes in relevant industries, changes to the entity’s capital structure, business strategy and key personnel, and any recent transactions. On a quarterly basis, White Mountains evaluates the most recent qualitative and quantitative information of the business and completes a fair valuation analysis for all other long-term investments classified as Level 3 investments. Periodically, and at least on an annual basis, White Mountains uses a third-party valuation firm to complete an independent valuation analysis of significant unconsolidated entities.

Other Long-term Investments - NAV
As of December 31, 2023, $833.8 million of White Mountains’s other long-term investments, which consisted of private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits and ILS funds, were valued at fair value using NAV as a practical expedient. Investments for which fair value is measured using NAV as a practical expedient are not classified within the fair value hierarchy.
White Mountains employs a number of procedures to assess the reasonableness of the fair value measurements for other long-term investments measured at NAV, including obtaining and reviewing interim unaudited and annual audited financial statements as well as periodically discussing the valuations and methodologies used to value the underlying investments of each fund with fund managers. However, since fund managers do not provide sufficient information to evaluate the pricing methods and inputs for each underlying investment, White Mountains considers the valuation inputs to be unobservable. The fair value of White Mountains’s other long-term investments measured at NAV are generally determined using the fund manager’s NAV. In the event that White Mountains believes the fair value of the fund differs from the NAV reported by the fund manager due to illiquidity or other factors, White Mountains will make an adjustment to the reported NAV to more appropriately represent the fair value of its other long-term investment.

Cash and Restricted Cash
Cash includes amounts on hand and demand deposits with banks and other financial institutions. Amounts presented in the statement of cash flows are shown net of balances acquired and sold in the purchase or sale of the Company’s consolidated subsidiaries.
Cash balances that are not immediately available for general corporate and operating purposes are classified as restricted.

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Derivatives
From time to time, White Mountains holds derivative financial instruments for risk management purposes. White Mountains recognizes all derivatives as either assets or liabilities, measured at fair value, on its consolidated balance sheet. Changes in the fair value of derivative instruments that meet the criteria for hedge accounting are recognized in other comprehensive income (loss) and reclassified into current period pre-tax income (loss) when the hedged items are recognized therein. Changes in the fair value of derivative instruments that do not meet the criteria for hedge accounting are recognized in current period pre-tax income (loss).
As of December 31, 2023, White Mountains holds an interest rate cap derivative instrument that does not meet the criteria for hedge accounting. See Note 9 — “Derivatives”.

Municipal Bond Guarantee Insurance
All of the contracts issued by BAM are accounted for as insurance contracts under ASC 944-605, Financial Guarantee Insurance Contracts. For capital appreciation bonds, par is adjusted to the estimated equivalent par value for current interest paying bonds. See Note 10 — “Municipal Bond Guarantee Insurance”.
Premiums are generally received upfront and an unearned premium revenue liability, equal to the amount of the premium received, is established at contract inception. Premium revenues are recognized in revenue over the period of the contracts in proportion to the amount of insurance protection provided using a constant rate. The constant rate is calculated based on the relationship between the par outstanding in a given reporting period compared with the sum of each of the par amounts outstanding for all periods.
Insurance premiums receivable represents amounts due from customers for municipal bond insurance policies. Installment premiums are measured at the present value of contractual premiums, discounted at the risk-free rate, which is set at the inception of the insurance contract.
Deferred acquisition costs represent commissions, premium taxes, excise taxes and other costs which are directly attributable to and vary with the production of business. These costs are deferred and amortized to the extent they relate to successful contract acquisitions over the applicable premium recognition period as acquisition expenses. Deferred acquisition costs are limited to the amount expected to be recovered from future earned premiums and anticipated investment income. A premium deficiency is recognized if the sum of expected loss and loss adjustment expenses (“LAE”), expected dividends to policyholders, unamortized acquisition costs, and maintenance costs exceeds related unearned premiums and anticipated investment income. A premium deficiency is recognized by charging any unamortized acquisition costs to expense to the extent required in order to eliminate the deficiency. If the premium deficiency exceeds unamortized acquisition costs then a liability is accrued for the excess deficiency.
Loss reserves are recorded only to the extent that the present value of any payments projected to be made by BAM, net of any expected recoveries, exceeds the associated unearned premium reserve. As of December 31, 2023 and 2022, BAM did not have any loss or loss adjustment expense reserves.

Property and Casualty Insurance and Reinsurance
Ark writes a diversified portfolio of reinsurance and insurance products, including property, specialty, marine & energy, casualty and accident & health.
Ark accounts for insurance and reinsurance policies that it writes in accordance with ASC 944, Financial Services - Insurance. Ark’s premiums written comprise premiums on insurance contracts incepted during the year as well as premium adjustments related to prior underwriting years. Insurance premiums are recognized as revenues over the loss exposure or coverage period. In most cases, premiums are earned ratably over the term of the contract, with unearned premiums calculated on a monthly pro-rata basis. Catastrophe premiums are earned in proportion to the insurance protection provided. Premiums earned are presented net of amounts ceded to reinsurers. Insurance premiums receivable, representing amounts due from insureds, are presented net of an allowance for uncollectible premiums, including expected credit losses. The allowance is based upon Ark’s ongoing review of amounts outstanding, historical loss data, including delinquencies and write-offs, current and forecasted economic conditions and other relevant factors. Credit risk is partially mitigated by Ark’s ability to cancel the policy if the policyholder does not pay the premium.
Deferred acquisition costs comprise commission and brokerage fees and taxes which are directly attributable to and vary with the production of business. These costs are deferred and amortized to the extent they relate to successful contract acquisitions over the applicable premium recognition period as insurance and reinsurance acquisition expenses. Deferred acquisition costs are limited to the amount expected to be recovered from future earned premiums and anticipated investment income. A premium deficiency is recognized if the sum of expected loss and LAE, expected dividends to policyholders, unamortized acquisition costs and maintenance costs exceeds related unearned premiums and anticipated investment income. A premium deficiency is recognized by charging any unamortized acquisition costs to expense to the extent required in order to eliminate the deficiency. If the premium deficiency exceeds unamortized acquisition costs, then a liability is accrued for the excess deficiency.
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Losses and LAE are charged against income as incurred. Unpaid losses and LAE, including estimates for amounts incurred but not reported (“IBNR”), are based on estimates of the ultimate costs of settling claims, including the effects of inflation and other societal and economic factors. Unpaid loss and LAE reserves represent management’s best estimate of ultimate losses and LAE, net of estimated salvage and subrogation recoveries, if applicable. Such estimates are regularly reviewed and updated, and any resulting adjustments are reflected in current results of operations. The process of estimating loss and LAE involves a considerable degree of judgment by management, and the ultimate amount of expense to be incurred could be considerably greater than or less than the amounts currently reflected in the financial statements. See Note 5 — “Loss and Loss Adjustment Expense Reserves”.
As part of its enterprise risk management function, Ark purchases reinsurance for risk mitigation purposes. Ark utilizes reinsurance and retrocessional agreements to reduce earnings volatility, protect capital, limit its exposure to risk concentration and accumulation of loss and manage within its overall internal risk tolerances or those set and agreed by regulators, ratings agencies and Lloyd’s. Ark also enters into reinsurance and retrocessional agreements to reduce its liability on individual risks and enable it to underwrite policies with higher limits where Ark believes this has a broader business benefit. Ark seeks to protect its downside risk from catastrophes and large loss events by purchasing reinsurance, including excess of loss protections, aggregate covers and industry loss warranties. Ark also considers alternative structures such as collateralized reinsurance, retrocessional reinsurance and catastrophe bonds. The purchase of reinsurance does not discharge Ark from its primary liability for the full value of its policies, and thus the collectability of balances due from Ark’s reinsurers is critical to its financial strength. Ark monitors the financial strength and ratings of its reinsurers on an ongoing basis. See Note 6 — “Third-Party Reinsurance”.
For the years of account prior to the Ark Transaction, a significant proportion of the Syndicates’ underwriting capital was provided by TPC Providers using whole account reinsurance contracts with Ark’s corporate member. For the years of account subsequent to the Ark Transaction, Ark is no longer using TPC Providers to provide underwriting capital for the Syndicates. Captions within results of operations and other comprehensive income are shown net of amounts relating to the TPC Providers share of the Syndicates’ results, including investment results.
Reinsurance recoverables represent paid losses and LAE, case reserves and IBNR reserves ceded to reinsurers under reinsurance treaties. Amounts recoverable from reinsurers are estimated in a manner consistent with the associated claims liability. Ark reports its reinsurance recoverables net of an allowance for estimated uncollectible reinsurance, including expected credit losses and coverage disputes. The allowance is based upon Ark’s ongoing review of amounts outstanding, length of collection periods, changes in reinsurer credit standing, disputes, applicable coverage defenses and other relevant factors.

Reinsurance Contracts Accounted for as Deposits
Reinsurance contracts that do not meet the risk transfer requirements necessary to be accounted for as reinsurance are accounted for using the deposit method. Under the deposit method, ceded premiums paid are not recognized through income but rather treated as a deposit.
BAM entered into three ceded reinsurance agreements with Fidus Re Ltd. (“Fidus Re”), a Bermuda-based special purpose insurer created in 2018 solely to provide reinsurance protection to BAM. BAM also entered into an excess of loss reinsurance agreement (the “XOLT”) with HG Re. The financing expenses paid by BAM under these reinsurance agreements are recorded in general and administrative expenses. See Note 10 — “Municipal Bond Guarantee Insurance”.
Ark has an aggregate excess of loss contract with SiriusPoint Ltd. (“SiriusPoint”), formerly Third Point Reinsurance Ltd., which is accounted for using the deposit method and recorded within other assets. Ark earns an annual crediting rate of 3.0%, which is recorded within other revenue. See Note 6 — “Third-Party Reinsurance”.

Revenue Recognition
Kudu’s revenues are primarily generated from Participation Contracts, which are noncontrolling equity interests in revenue and earnings participation contracts with asset and wealth management firms. Kudu’s Participation Contracts are measured at fair value with the change therein recognized within net realized and unrealized investment gains (losses). Distributions from Kudu’s clients are recognized through investment income when Kudu’s right to receive payment has been established and can be reliably measured, which generally occurs on a quarterly basis in accordance with the terms of the Participation Contracts.
White Mountains’s Other Operations recognizes agent commissions and other revenues when it has satisfied its performance obligations. Deferred revenues associated with unsatisfied performance obligations are recognized within other liabilities.

Cost of Sales
White Mountains’s Other Operations’ cost of sales consists of salaries and related expenses, professional services and marketing and advertising expenses directly related to sales generation. These expenses are recognized as incurred.
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Goodwill and Other Intangible Assets
Goodwill represents the excess of the amount paid to acquire subsidiaries over the fair value of identifiable net assets at the date of acquisition. Other intangible assets consist primarily of underwriting capacity, customer relationships and trade names.
Goodwill and other intangible assets with indefinite lives are not amortized, but rather are evaluated for impairment on an annual basis, or whenever indications of potential impairment exist. In the absence of any indications of potential impairment, the evaluation of goodwill and indefinite-lived intangible assets is performed no later than the interim period in which the anniversary of the acquisition date falls. White Mountains initially evaluates goodwill using a qualitative approach (step zero) to determine whether it is more likely than not that the implied fair value of goodwill is greater than its carrying value. If White Mountains determines, based on this qualitative review, that it is more likely than not that an impairment may exist, then White Mountains performs a quantitative analysis to compare the fair value of a reporting unit with its carrying value. If the carrying value exceeds the estimated fair value, then an impairment charge is recognized through current period pre-tax income (loss).
Other intangible assets with finite lives are initially measured at their acquisition date fair values and subsequently amortized over their economic lives. Other intangible assets with finite lives are presented net of accumulated amortization on the balance sheet. Other intangible assets with finite lives are reviewed for impairment when events occur or there are changes in circumstances indicating that their carrying value may exceed fair value. Impairment exists when the carrying value of other intangible assets exceeds fair value. See Note 4 — “Goodwill and Other Intangible Assets”.
Incentive Compensation
White Mountains’s Long-Term Incentive Plan (the “WTM Incentive Plan”) provides for grants of various types of share-based and non-share-based incentive awards to key employees of White Mountains. Non-share-based awards are recognized over the related service periods based on management’s best estimate of the amounts at which the awards are expected to be paid. Share-based compensation which is typically settled in cash, such as performance shares, is classified as a liability-type award. The compensation cost for liability-classified awards is measured initially at the grant date fair value and remeasured each reporting period until settlement. The compensation cost for equity-classified awards expected to be settled in shares, such as options and restricted shares, is measured at the original grant date fair value of the award. The compensation cost for all awards is recognized for the vested portion of the awards over the related service periods. See Note 12 — “Employee Share-Based Incentive Compensation Plans”.

Income Taxes
White Mountains has subsidiaries and branches that operate in various jurisdictions around the world and are subject to tax in the jurisdictions in which they operate.  As of December 31, 2023, the primary jurisdictions in which the Company’s subsidiaries and branches operate and were subject to tax include Israel, Luxembourg, the United Kingdom and the United States. Income earned or losses generated by companies outside the United States are generally subject to an overall effective tax rate lower than that imposed by the United States.
Deferred tax assets and liabilities are recorded when a difference between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts for tax purposes exists, and for other temporary differences. The deferred tax asset or liability is recorded based on tax rates expected to be in effect when the difference reverses. Deferred tax assets represent amounts available to reduce income taxes payable in future periods. White Mountains records a valuation allowance against deferred tax assets if it becomes more likely than not that all or a portion of a deferred tax asset will not be realized. Changes in valuation allowances from period to period are included in income tax expense in the period of change. See Note 8 — “Income Taxes”.

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Leases
White Mountains has entered into lease agreements, primarily for office space and equipment. These leases are classified as operating leases, with lease expense recognized on a straight-line basis over the term of the lease. Lease assets and liabilities are not recorded for leases with a term at inception of one year or less. Lease incentives, such as free rent or landlord reimbursements for leasehold improvements, are recognized at lease inception and amortized on a straight-line basis over the term of the lease. Lease expense and the amortization of leasehold improvements are recognized within general and administrative expenses. Lease payments related to options to extend or renew the lease term are excluded from the calculation of lease liabilities unless White Mountains is reasonably certain of exercising those options.
As of December 31, 2023 and 2022, the right-of-use (“ROU”) assets were $20.3 million and $25.2 million, and the lease liabilities were $22.0 million and $27.1 million.

Noncontrolling Interests
Noncontrolling interests consist of the ownership interests of noncontrolling shareholders in consolidated subsidiaries and are presented separately on the balance sheet. The portion of comprehensive income (loss) attributable to noncontrolling interests is presented net of related income taxes in the statement of operations and comprehensive income (loss). See Note 13 — “Common Shareholders’ Equity and Noncontrolling Interests”.

Foreign Currency Exchange
The functional currencies for White Mountains’s non-U.S. based subsidiaries are measured, in most instances, using currencies other than the U.S. dollar. Net foreign exchange gains and losses arising from the translation of functional currencies are generally reported in shareholders’ equity, in accumulated other comprehensive income (loss).
White Mountains also invests in securities denominated in foreign currencies. Assets and liabilities recorded in these foreign currencies are translated into U.S. dollars at exchange rates in effect at the balance sheet date, and revenues and expenses are converted using the weighted average exchange rates for the period.
As of December 31, 2023 and 2022, White Mountains had unrealized foreign currency translation losses of $1.6 million and $3.5 million recorded in accumulated other comprehensive income (loss) on its consolidated balance sheet.

Fair Value Measurements
Fair value measurements are categorized into a hierarchy that distinguishes between inputs based on market data from independent sources (observable inputs) and a reporting entity’s internal assumptions based upon the best information available when external market data is limited or unavailable (unobservable inputs). Quoted prices in active markets for identical assets or liabilities have the highest priority (Level 1), followed by observable inputs other than quoted prices, including prices for similar but not identical assets or liabilities (Level 2), and unobservable inputs, including the reporting entity’s estimates of the assumptions that market participants would use, having the lowest priority (Level 3). See Note 18 — “Fair Value of Financial Instruments”.

Business Combinations
White Mountains accounts for purchases of businesses using the acquisition method, which requires the measurement of assets acquired, including other intangible assets, and liabilities assumed, including contingent liabilities, at their estimated fair values as of the acquisition date. The acquisition date fair values represent management’s best estimates and are based upon established valuation techniques, reasonable assumptions and, where appropriate, valuations performed by independent third parties. In circumstances where additional information is required in order to determine the acquisition date fair value of balance sheet amounts, provisional amounts may be recorded as of the acquisition date and may be subject to subsequent adjustment throughout the measurement period, which is up to one year from the acquisition date. Measurement period adjustments are recognized in the period in which they are determined. The results of operations and cash flows of businesses acquired are included in the consolidated financial statements from the date of acquisition. White Mountains accounts for purchases of other intangible assets that do not meet the definition of a business as asset acquisitions. Asset acquisitions are recognized at the amount of consideration paid, which is deemed to equal fair value.

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Note 2. Significant Transactions

Bamboo Transaction

On October 19, 2023, White Mountains entered into an agreement and plan of merger (the “Bamboo Merger Agreement”) with Bamboo Ide8 Insurance Services LLC (“Bamboo MGA”) and John Chu, as the unitholders’ representative. Under the terms of the Bamboo Merger Agreement, White Mountains’s wholly-owned subsidiary, WM Pierce Merger Sub LLC, agreed to merge with and into Bamboo MGA, with Bamboo MGA continuing as the surviving company (the “Bamboo Merger”). Concurrently with the execution of the Bamboo Merger Agreement, certain Bamboo management unitholders agreed to rollover the majority of their existing equity in Bamboo MGA into PM Holdings LLC (“Bamboo Holdings”) (collectively with Bamboo MGA and Ide8 Limited (“Bamboo Captive”), “Bamboo”). White Mountains also agreed to make an equity contribution to Bamboo immediately following the Bamboo Merger (together with the Bamboo Merger and the rollover transactions, the “Bamboo Transaction”).
On January 2, 2024, White Mountains closed the Bamboo Transaction in accordance with the terms of the Bamboo Merger Agreement, investing $296.7 million in equity into Bamboo, which included the contribution of $36.0 million to retire Bamboo’s legacy credit facility and the contribution of $20.0 million of primary capital. The consideration is subject to customary purchase price adjustments. At closing, White Mountains owned 72.8% of Bamboo on a basic shares outstanding basis (63.7% on a fully-diluted/fully-converted basis, taking account of management’s equity incentives). At closing, 16.1% of basic shares outstanding are owned by Bamboo management (26.6% on a fully-diluted/fully-converted basis).
Bamboo is a capital-light, tech- and data-enabled insurance distribution platform providing homeowners’ insurance and related products to the residential property market in California. Bamboo operates primarily through Bamboo MGA, its full-service MGA business, where the company manages all aspects of the placement process on behalf of its fronting and reinsurance partners, including product development, marketing, underwriting, policy issuance and claims oversight, and it earns commissions based on the volume and profitability of the insurance that it places. It offers both admitted and non-admitted insurance products. Bamboo also operates two separate but integrated business models: (i) a retail agency, within Bamboo MGA, offering ancillary products (e.g., flood, earthquake) on behalf of third parties and (ii) Bamboo Captive, a Bermuda-domiciled captive reinsurer that participates in the underwriting risk of Bamboo’s MGA programs to align interests with reinsurance partners. Bamboo will be consolidated and presented as a reportable segment for periods after December 31, 2023.

NSM

On August 1, 2022, the NSM Transaction closed. White Mountains received $1.4 billion in net cash proceeds at closing and recognized a net transaction gain of $875.7 million, which was comprised of $886.8 million of net gain from sale of discontinued operations and $2.9 million of comprehensive income related to the recognition of foreign currency translation gains (losses) from the sale, partially offset by $14.0 million of compensation and other costs related to the transaction recorded in Other Operations.
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WM Outrigger Re

During the fourth quarter of 2022, Ark sponsored the formation of Outrigger Re Ltd., a Bermuda company registered as a special purpose insurer and segregated accounts company, to provide reinsurance capacity to Ark. On December 20, 2022, Outrigger Re Ltd. issued $250 million of non-voting redeemable preference shares on behalf of four segregated accounts to White Mountains and unrelated third-party investors. Upon issuance of the preference shares, Outrigger Re Ltd. entered into collateralized quota share agreements with GAIL to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2023 underwriting year. The proceeds from the issuance of the preference shares were deposited into collateral trust accounts to fund any potential obligations under the reinsurance agreements with GAIL. Outrigger Re Ltd.’s obligations under the reinsurance agreements with GAIL are subject to an aggregate limit equal to the assets in the collateral trusts. The terms of the reinsurance agreements are renewable upon the mutual agreement of Ark and the applicable preference shareholder of Outrigger Re Ltd.
During the fourth quarter of 2022, White Mountains purchased 100% of the preference shares linked to its segregated account, WM Outrigger Re, for $205.0 million. White Mountains consolidates WM Outrigger Re’s results in its financial statements. WM Outrigger Re’s quota share reinsurance agreement with GAIL eliminates in White Mountains’s consolidated financial statements.
During the fourth quarter of 2023, Ark renewed Outrigger Re Ltd. to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2024 underwriting year. Outrigger Re Ltd. was capitalized with $250.0 million for business written in the 2024 underwriting year, of which White Mountains rolled over $130.0 million from its commitment to the 2023 underwriting year. The remaining capital was provided by new and continuing unrelated third-party investors.
As of December 31, 2023 and 2022, short-term investments of $265.3 million and $203.7 million were held in a collateral trust, after expenses of $1.3 million.
During January 2024, White Mountains received an initial return of capital of $68.1 million from WM Outrigger Re for business written in the 2023 underwriting year. White Mountains expects to receive any additional return of capital and associated profits from business written in the 2023 underwriting year beginning in the second quarter of 2024.

Ark

On October 1, 2020, White Mountains entered into a subscription and purchase agreement (the “Ark SPA”) with Ark and certain selling shareholders (collectively with Ark, the “Ark Sellers”). Under the terms of the Ark SPA, White Mountains agreed to contribute $605.4 million of equity capital to Ark, at a pre-money valuation of $300.0 million, and to purchase $40.9 million of shares from the Ark Sellers. White Mountains also agreed to contribute up to an additional $200.0 million of equity capital to Ark in 2021. In accordance with the Ark SPA, in the fourth quarter of 2020 White Mountains pre-funded/placed in escrow a total of $646.3 million in preparation for closing the transaction, including $280.0 million funded directly to Lloyd’s on behalf of Ark under the terms of a credit facility agreement and $366.3 million placed in escrow, which is reflected on the balance sheet within Other Operations as of December 31, 2020.
On January 1, 2021, White Mountains completed the Ark Transaction in accordance with the terms of the Ark SPA. As of December 31, 2021, White Mountains owned 72.0% of Ark on a basic shares outstanding basis (63.0% after taking account of management’s equity incentives). The remaining shares are owned by employees. In the future, management rollover shareholders could earn additional shares in Ark if and to the extent that White Mountains achieves certain thresholds for its multiple of invested capital return. If fully earned, these additional shares would represent 12.5% of the shares outstanding at closing.
White Mountains recognized total assets acquired related to the Ark Transaction of $2.5 billion, including goodwill and other intangible assets of $292.5 million, and total liabilities of $1.7 billion, including contingent consideration of $22.5 million and noncontrolling interest of $220.2 million. Ark incurred transaction costs of $25.3 million in the first quarter of 2021.
In the third quarter of 2021, Ark issued $163.3 million of floating rate unsecured subordinated notes (the “Ark 2021 Subordinated Notes”) in three separate transactions. See Note 7 — “Debt”. In connection with the issuance of the Ark 2021 Subordinated Notes, White Mountains and Ark terminated White Mountains’s commitment to provide up to $200.0 million of additional equity capital to Ark in 2021.
F - 18


The following presents additional details of the assets acquired and liabilities assumed as of the January 1, 2021 acquisition date:
MillionsAs of January 1, 2021
Investments$594.3
Cash52.0(1)
Reinsurance recoverables433.4
Insurance premiums receivable236.7
Ceded unearned premiums170.2
Value of in-force business acquired71.7
Other assets88.9
Loss and loss adjustment expense reserves(696.0)
Unearned insurance premiums(326.1)
Debt(46.4)
Ceded reinsurance payable(528.3)
Other liabilities(25.9)
   Net tangible assets acquired24.5
Goodwill116.8
Other intangible assets - syndicate underwriting capacity175.7
Deferred tax liability on other intangible assets(33.4)
  Net assets acquired$283.6
(1) Cash excludes the White Mountains cash contribution of $605.4 as part of the Ark Transaction.

The values of net tangible assets acquired and the resulting goodwill, other intangible assets and contingent consideration were recorded at fair value using Level 3 inputs. The majority of the tangible assets acquired and liabilities assumed were recorded at their carrying values, as their carrying values approximated their fair values due to their short-term nature. The fair values of other intangible assets and the contingent consideration liability were estimated primarily based on the income approach. The income approach estimates fair value based on the present value of the cash flows that the assets are expected to generate in the future. White Mountains developed internal estimates for the expected future cash flows and discount rates used in the present value calculations.
The value of in-force business acquired represents the estimated profits relating to the unexpired contracts, net of related prepaid reinsurance, at the acquisition date through the expiration date of the contracts. During the years ended December 31, 2023, 2022 and 2021, Ark recognized $0.0 million, $7.5 million and $64.2 million of amortization expense on the value of in-force business acquired. The value of the syndicate underwriting capacity intangible asset was estimated using net cash flows attributable to Ark’s rights to write business in the Lloyd’s market. The value of the in-force business acquired and the syndicate underwriting capacity were estimated using a discounted cash flow method. Significant inputs to the valuation models include estimates of growth in premium revenues, investment returns, claims costs, expenses and discount rates based on a weighted average cost of capital.
In evaluating the fair value of Ark’s loss and loss adjustment expense reserves, White Mountains determined that the risk-free rate of interest was approximately equal to the risk factor reflecting the uncertainty within the reserves, and thus no adjustment was necessary. During the years ended December 31, 2023, 2022 and 2021, Ark recognized pre-tax expense of $48.7 million, $17.3 million and $5.5 million for the change in the fair value of its contingent consideration liabilities. Any future adjustments to contingent consideration liabilities will be recognized through pre-tax income (loss). As of December 31, 2023 and 2022, Ark recognized total contingent consideration liabilities of $94.0 million and $45.3 million.
Ark’s segment income and expenses for 2023, 2022 and 2021 are presented in Note 15 — “Segment Information.”


F - 19


Kudu

On May 26, 2022, Kudu raised $114.5 million of equity capital (the “Kudu Transaction”) from Massachusetts Mutual Life Insurance Company (“Mass Mutual”), White Mountains and Kudu management. Mass Mutual, White Mountains and Kudu management contributed $64.1 million, $50.0 million and $0.4 million at a pre-money valuation of 1.3x book value, or $114.0 million, above the December 31, 2021 equity value of Kudu’s go-forward portfolio of Participation Contracts. The go-forward portfolio of Kudu’s Participation Contracts excluded $54.3 million of enterprise value as of December 31, 2021 relating to two portfolio companies that had announced sale transactions prior to the capital raise. As a result of the Kudu Transaction, White Mountains’s basic ownership of Kudu decreased from 99.1% to 89.3%.

Note 3. Investment Securities

White Mountains’s portfolio of investment securities held for general investment purposes consists of fixed maturity investments, short-term investments, common equity securities, its investment in MediaAlpha and other long-term investments.White Mountains’s portfolio of fixed maturity investments, including those within short-term investments, are classified as trading securities. Trading securities are reported at fair value as of the balance sheet date. Short-term investments also include interest-bearing money market funds and certificates of deposit that are carried at fair value. White Mountains’s portfolio of common equity securities, its investment in MediaAlpha and other long-term investments are measured at fair value.Other long-term investments consist primarily of unconsolidated entities, Kudu’s Participation Contracts, private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits, ILS funds and private debt instruments.White Mountains has taken the fair value option for its equity method eligible investments. See Note 16 — Equity Method Eligible Investments”. Net realized and unrealized investment gains (losses) are reported in pre-tax revenues.

Net Investment Income

White Mountains’s net investment income is comprised primarily of interest income associated with White Mountains’s fixed maturity investments and short-term investments, dividend income from common equity securities and distributions from other long-term investments.
The following table presents pre-tax net investment income for the years ended December 31, 2023, 2022 and 2021:

Year Ended December 31,
Millions202320222021
Fixed maturity investments$64.4 $41.4 $28.8 
Short-term investments52.0 16.4 .6 
Common equity securities4.1 1.6 .1 
Other long-term investments76.1 68.1 56.3 
Amount attributable to TPC Providers (1.0)(1.0)
Total investment income196.6 126.5 84.8 
Third-party investment expenses(2.4)(2.1)(2.3)
Net investment income, pre-tax$194.2 $124.4 $82.5 

F - 20


Net Realized and Unrealized Investment Gains (Losses)

The following table presents net realized and unrealized investment gains (losses) for the years ended December 31, 2023, 2022 and 2021:

Year Ended December 31,
Millions202320222021
Realized investment gains (losses)
Fixed maturity investments$(4.7)$(11.9)$3.9 
Short-term investments(.2)(1.4)(.1)
Common equity securities29.5 — .4 
Investment in MediaAlpha — 160.3 
Other long-term investments72.2 128.4 (7.7)
Net realized investment gains (losses)96.8 115.1 156.8 
Unrealized investment gains (losses)
Fixed maturity investments66.1 (168.4)(42.2)
Short-term investments1.9 (1.1)— 
Common equity securities47.1 (7.1)14.9 
Investment in MediaAlpha27.1 (93.0)(540.6)
Other long-term investments195.2 (43.8)172.7 
Net unrealized investment gains (losses)337.4 (313.4)(395.2)
Net realized and unrealized investment gains (losses), before
   amount attributable to TPC providers (1)
434.2 (198.3)(238.4)
Amount attributable to TPC Providers 6.8 (7.7)
Net realized and unrealized investment gains (losses)
$434.2 $(191.5)$(246.1)
Fixed maturity and short-term investments
   Net realized and unrealized investment gains (losses)$63.1 $(182.8)$(38.4)
Less: net realized and unrealized gains (losses) on investment
   securities sold during the period
4.7 (2.9)(8.4)
Net unrealized investment gains (losses) recognized during the
   period on investment securities held at the end of the period
$58.4 $(179.9)$(30.0)
Common equity securities and investment in MediaAlpha
Net realized and unrealized investment gains (losses) on
   common equity securities
$76.6 $(7.1)$15.3 
Net realized and unrealized investment gains (losses) from
   investment in MediaAlpha
27.1 (93.0)(380.3)
Total net realized and unrealized investment gains (losses)103.7 (100.1)(365.0)
Less: net realized and unrealized gains (losses) on investment
   securities sold during the period
28.4 — 20.3 
Net unrealized investment gains (losses) recognized during the
   period on investment securities held at the end of the period
$75.3 $(100.1)$(385.3)
(1) For 2023, 2022 and 2021, includes $13.6, $(29.3) and $(7.7) of net realized and unrealized investment gains (losses) related to foreign currency exchange.

For the years ended December 31, 2023, 2022 and 2021, all of White Mountains’s net realized and unrealized investment gains (losses) were recorded in the consolidated statements of operations. There were no investment gains (losses) recorded in other comprehensive income.
White Mountains recognized gross realized investment gains of $113.7 million, $129.9 million and $212.3 million and gross realized investment losses of $16.9 million, $14.8 million and $55.5 million on sales of investment securities for the years ending December 31, 2023, 2022 and 2021.
F - 21


The following table presents total net unrealized gains (losses) attributable to Level 3 investments for the years ended December 31, 2023, 2022 and 2021 for investments still held at the end of the period:
Year Ended December 31,
Millions202320222021
Total net unrealized investment gains on other long-term investments held at
   the end of period, pre-tax
$133.9 $56.5 $98.9 

Proceeds from the sales and maturities of investments, excluding short-term investments, totaled $0.8 billion, $0.5 billion and $0.8 billion for the years ended December 31, 2023, 2022 and 2021.

Investment Holdings

The following tables present the cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses) and carrying value of White Mountains’s fixed maturity investments as of December 31, 2023 and 2022:
December 31, 2023
MillionsCost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Net Foreign
Currency
Gains (Losses)
Carrying
Value
U.S. Government and agency obligations$209.0 $.3 $(4.4)$ $204.9 
Debt securities issued by corporations1,085.9 5.6 (45.4)(1.1)1,045.0 
Municipal obligations275.1 .9 (15.1) 260.9 
Mortgage and asset-backed securities417.2 2.0 (29.8) 389.4 
Collateralized loan obligations211.2 .4 (2.4)(.1)209.1 
Total fixed maturity investments$2,198.4 $9.2 $(97.1)$(1.2)$2,109.3 

December 31, 2022
MillionsCost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Net Foreign
Currency
Gains (Losses)
Carrying
Value
U.S. Government and agency obligations$216.6 $— $(10.2)$— $206.4 
Debt securities issued by corporations1,098.3 .6 (78.3)(1.8)1,018.8 
Municipal obligations281.6 .4 (23.4)— 258.6 
Mortgage and asset-backed securities288.7 — (34.5)— 254.2 
Collateralized loan obligations190.8 .1 (6.0)(2.0)182.9 
Total fixed maturity investments$2,076.0 $1.1 $(152.4)$(3.8)$1,920.9 


F - 22


The weighted average duration of White Mountains’s fixed income portfolio was 1.9 years, including short-term investments, and 3.3 years, excluding short-term investments, as of December 31, 2023.
The following table presents the cost or amortized cost and carrying value of White Mountains’s fixed maturity investments by contractual maturity as of December 31, 2023. Actual maturities could differ from contractual maturities because borrowers may have the right to call or prepay certain obligations with or without call or prepayment penalties.
December 31, 2023
MillionsCost or Amortized CostCarrying Value
Due in one year or less$319.9 $315.0 
Due after one year through five years845.0 813.9 
Due after five years through ten years303.4 287.0 
Due after ten years101.7 94.9 
Mortgage and asset-backed securities and
   collateralized loan obligations
628.4 598.5 
Total fixed maturity investments$2,198.4 $2,109.3 

The following tables present the cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses) and carrying value of common equity securities, White Mountains’s investment in MediaAlpha and other long-term investments as of December 31, 2023 and 2022:
December 31, 2023
MillionsCost or
Amortized Cost
Gross Unrealized
Gains
Gross Unrealized LossesNet Foreign
Currency Gains (Losses)
Carrying
Value
Common equity securities$483.5 $62.3 $(1.2)$(6.2)$538.4 
Investment in MediaAlpha
$59.2 $195.7 $ $ $254.9 
Other long-term investments$1,655.7 $446.3 $(94.5)$(9.3)$1,998.2 

December 31, 2022
MillionsCost or
Amortized Cost
Gross Unrealized
Gains
Gross Unrealized LossesNet Foreign
Currency Gains (Losses)
Carrying
Value
Common equity securities$660.6 $26.7 $(8.4)$(10.5)$668.4 
Investment in MediaAlpha
$— $168.6 $— $— $168.6 
Other long-term investments$1,340.8 $271.1 $(107.1)$(16.8)$1,488.0 


F - 23


Fair Value Measurements by Level
The following tables present White Mountains’s fair value measurements for investments as of December 31, 2023 and 2022 by level. See Note 1 — “Basis of Presentation and Significant Accounting Policies”. The major security types were based on the legal form of the securities. White Mountains has disaggregated its fixed maturity investments based on the issuing entity type, which impacts credit quality, with debt securities issued by U.S. government entities carrying minimal credit risk, while the credit and other risks associated with other issuers, such as corporations, municipalities or entities issuing mortgage and asset-backed securities vary depending on the nature of the issuing entity type. White Mountains further disaggregates debt securities issued by corporations by industry sector because investors often reference commonly used benchmarks and their subsectors to monitor risk and performance. Accordingly, White Mountains has further disaggregated this asset class into subclasses based on the similar sectors and industry classifications it uses to evaluate investment risk and performance against commonly used benchmarks, such as the Bloomberg Barclays U.S. Intermediate Aggregate.
December 31, 2023
MillionsFair ValueLevel 1Level 2Level 3
Fixed maturity investments:
U.S. Government and agency obligations$204.9 $204.9 $ $ 
Debt securities issued by corporations: 
Financials309.8  309.8  
Consumer214.6  214.6  
Industrial121.6  121.6  
Healthcare121.3  121.3  
Technology108.9  108.9  
Utilities70.2  70.2  
Communications46.3  46.3  
Energy28.9  28.9  
Materials23.4  23.4  
Total debt securities issued by corporations1,045.0  1,045.0  
Municipal obligations260.9  260.9  
Mortgage and asset-backed securities389.4  389.4  
Collateralized loan obligations209.1  209.1  
Total fixed maturity investments2,109.3 204.9 1,904.4  
Short-term investments1,487.9 1,457.6 30.3  
Common equity securities:
Exchange-traded funds137.8 137.8   
Other (1)
400.6  400.6  
Total common equity securities538.4 137.8 400.6  
Investment in MediaAlpha254.9 254.9   
Other long-term investments1,164.4  26.2 1,138.2 
Other long-term investments NAV (2)
833.8    
Total other long-term investments1,998.2  26.2 1,138.2 
Total investments$6,388.7 $2,055.2 $2,361.5 $1,138.2 
(1) Consists of investments in listed funds that predominantly invest in international equities.
(2) Consists of private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits and ILS funds for which fair value is measured using NAV as a practical expedient. Investments for which fair value is measured at NAV are not classified within the fair value hierarchy.


F - 24


December 31, 2022
MillionsFair ValueLevel 1Level 2Level 3
Fixed maturity investments:    
U.S. Government and agency obligations$206.4 $206.4 $— $— 
Debt securities issued by corporations:    
Financials291.2 — 291.2 — 
Consumer191.9 — 191.9 — 
Industrial115.4 — 115.4 — 
Healthcare121.3 — 121.3 — 
Technology123.7 — 123.7 — 
Utilities73.8 — 73.8 — 
Communications47.9 — 47.9 — 
Energy33.9 — 33.9 — 
Materials19.7 — 19.7 — 
Total debt securities issued by corporations1,018.8 — 1,018.8 — 
Municipal obligations258.6 — 258.6 — 
Mortgage and asset-backed securities254.2 — 254.2 — 
Collateralized loan obligations182.9 — 182.9 — 
Total fixed maturity investments1,920.9 206.4 1,714.5 — 
Short-term investments924.1 924.1 — — 
Common equity securities:
Exchange-traded funds333.8 333.8 — — 
Other (1)
334.6 — 334.6 — 
Total common equity securities668.4 333.8 334.6 — 
Investment in MediaAlpha168.6 168.6 — — 
Other long-term investments926.4 — 14.8 911.6 
Other long-term investments NAV (2)
561.6 — — — 
Total other long-term investments1,488.0 — 14.8 911.6 
Total investments$5,170.0 $1,632.9 $2,063.9 $911.6 
(1) Consists of investments in listed funds that predominantly invest in international equities.
(2) Consists of private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits and ILS funds for which fair value is measured using NAV as a practical expedient. Investments for which fair value is measured at NAV are not classified within the fair value hierarchy.

Investments Held on Deposit or as Collateral

As of December 31, 2023 and 2022, investments of $585.6 million and $500.5 million were held in trusts required to be maintained in relation to HG Global’s reinsurance agreements with BAM.
HG Global is required to maintain an interest reserve account in connection with its senior notes issued in 2022. As of December 31, 2023 and 2022, the fair value of the interest reserve account, which is included in short-term investments, was $30.4 million and $31.2 million. See Note 7 — “Debt”.
BAM is required to maintain deposits with certain insurance regulatory agencies in order to maintain its insurance licenses. The fair value of such deposits, which represent state deposits and are included within the investment portfolio, totaled $4.6 million as of both December 31, 2023 and 2022.
Lloyd’s trust deposits are generally required of Lloyd's syndicates to protect policyholders in non-U.K. markets and are pledged into Lloyd’s trust accounts to provide a portion of the capital needed to support obligations at Lloyd’s. As of December 31, 2023 and 2022, Ark held Lloyd’s trust deposits with a fair value of $158.0 million and $137.4 million.
The underwriting capacity of a member of Lloyd’s must be supported by providing a deposit (“Funds at Lloyd’s”) in the form of cash, securities or letters of credit in an amount determined by Lloyd’s. The amount of such deposit is calculated for each member through the completion of an annual capital adequacy exercise. These requirements allow Lloyd’s to evaluate that each member has sufficient assets to meet its underwriting liabilities plus a required solvency margin. As of December 31, 2023 and 2022, the fair value of Ark’s Funds at Lloyd’s investment deposits totaled $344.7 million and $319.2 million.
As of December 31, 2023 and 2022, Ark held additional investments on deposit or as collateral for insurance regulators and reinsurance counterparties of $244.5 million and $257.0 million.
F - 25


As of December 31, 2023 and 2022, Ark has $198.9 million and $90.3 million of short-term investments pledged as collateral under uncommitted standby letters of credit. See Note 7 — “Debt”.
As of December 31, 2023 and 2022, short-term investments of $265.3 million and $203.7 million were held in a collateral trust account required to be maintained in relation to WM Outrigger Re’s reinsurance agreement with GAIL.
Kudu is required to maintain an interest reserve account in connection with its credit facility. As of December 31, 2023, the interest reserve account of $14.9 million was held in short term investments. As of December 31, 2022 the interest reserve account of $12.2 million was held in restricted cash. See Note 7 - “Debt.”

Debt Securities Issued by Corporations

The following table presents the credit ratings of debt securities issued by corporations held in White Mountains’s investment portfolio as of December 31, 20212023 and 2020:2022:
Fair Value at December 31,
Fair Value as of December 31,Fair Value as of December 31,
MillionsMillions20212020Millions20232022
AAAAAA$12.0 $10.6 
AAAA85.0 57.9 
AA490.4 318.3 
BBBBBB396.8 159.6 
BB 1.0 
Other
Other
OtherOther8.7 — 
Debt securities issued by corporations (1)
Debt securities issued by corporations (1)
$992.9 $547.4 
(1)    Credit ratings are based upon issuer credit ratings provided by Standard & Poor’s Financial Services LLC (“Standard & Poor’s”), or if unrated by Standard & Poor’s, long-term obligation ratings provided by Moody’s Investor Service, Inc.

Mortgage and Asset-backed Securities and Collateralized Loan Obligations

The following table presents the fair value of White Mountains’s mortgage and asset-backed securities and collateralized loan obligations as of December 31, 20212023 and 2020:2022:
December 31, 2021December 31, 2020 December 31, 2023December 31, 2022
MillionsMillionsFair ValueLevel 2Level 3Fair ValueLevel 2Level 3MillionsFair ValueLevel 2Level 3Fair ValueLevel 2Level 3
Mortgage-backed securities:Mortgage-backed securities:      Mortgage-backed securities:  
Agency:Agency:      Agency:  
FNMAFNMA$125.4 $125.4 $ $88.7 $88.7 $— 
FHLMCFHLMC90.5 90.5  70.1 70.1 — 
GNMAGNMA40.1 40.1  40.6 40.6 — 
Total agency (1)
Total agency (1)
256.0 256.0  199.4 199.4 — 
Non-agency: ResidentialNon-agency: Residential.5 .5  — — — 
Total non-agencyTotal non-agency.5 .5  — — — 
Total non-agency
Total non-agency
Total mortgage-backed securitiesTotal mortgage-backed securities256.5 256.5  199.4 199.4 — 
Other asset-backed securities:Other asset-backed securities:  
Credit card receivablesCredit card receivables12.3 12.3  11.3 11.3 — 
Credit card receivables
Credit card receivables
Vehicle receivablesVehicle receivables8.8 8.8  7.8 7.8 — 
Other
Total other asset-backed securitiesTotal other asset-backed securities21.1 21.1  19.1 19.1 — 
Total mortgage and asset-backed securitiesTotal mortgage and asset-backed securities277.6 277.6  218.5 218.5 — 
Collateralized loan obligations135.0 135.0  — — — 
Collateralized loan obligations:
Total mortgage and asset-backed securities and
collateralized loan obligations
Total mortgage and asset-backed securities and
collateralized loan obligations
$412.6 $412.6 $ $218.5 $218.5 $— 
(1) Represents publicly traded mortgage-backed securities which carry the full faith and credit guaranty of the U.S. Government (i.e., GNMA) or are guaranteed
by a government sponsored entity (i.e., FNMA, FHLMC).

As of December 31, 2021,2023, White Mountains’s investment portfolio included $135.0$209.1 million of collateralized loan obligations that are within the senior tranches of their respective fund securitization structures. All of White Mountains’s collateral loan obligations were rated AAA or AA as of December 31, 2021.2023.

F - 26


Investment in MediaAlpha

Following the MediaAlpha IPO, White Mountains’s investment in MediaAlpha is accounted for at fair value based on the publicly traded share price of MediaAlpha’s common stock and is presented as a separate line item on the balance sheet.
During the second quarter of 2023, White Mountains completed a tender offer to purchase 5.9 million additional shares of MediaAlpha at a purchase price of $10.00 per share. As of December 31, 2023, White Mountains owned 22.9 million shares, representing a 34.9% basic ownership interest (33.1% on a fully-diluted/fully-converted basis). See Note 16 — “Equity Method Eligible Investments.” At White Mountains’s current level of ownership, each $1.00 per share increase or decrease in the share price of MediaAlpha will result in an approximate $9.00 per share increase or decrease in White Mountains’s book value per share. At the December 31, 20212023 closing price of $15.44$11.15 per share, the fair value of White Mountains’s investment in MediaAlpha was $261.6$254.9 million. See Note 2 — “Significant Transactions”.
F - 27


Other Long-Term Investments

The following table presents the carrying values of White Mountains’s other long-term investments as of December 31, 2021 and 2020:
Fair Value at
Fair Value as of December 31, 2023Fair Value as of December 31, 2023
MillionsMillionsDecember 31, 2021December 31, 2020MillionsArk/WM OutriggerKuduOtherTotal
Kudu’s Participation ContractsKudu’s Participation Contracts$669.5 $400.6 
PassportCard/DavidShield
PassportCard/DavidShield
120.0 95.0 
Elementum Holdings L.P.45.0 55.1 
Elementum Holdings, L.P.
Other unconsolidated entities (1)
Other unconsolidated entities (1)
34.4 42.4 
Total unconsolidated entitiesTotal unconsolidated entities868.9 593.1 
Total unconsolidated entities
Total unconsolidated entities
Private equity funds and hedge funds
Bank loan fundBank loan fund163.0 — 
Private equity funds and hedge funds153.8 121.2 
ILS funds
Lloyd’s trust depositsLloyd’s trust deposits113.8 — 
ILS funds51.9 51.4 
Private debt investments14.1 21.1 
Private debt instruments
OtherOther12.3 — 
Total other long-term investmentsTotal other long-term investments$1,377.8 $786.8 
(1) Includes White Mountains’s non-controllingnoncontrolling equity interests in certain preferred securities, private common equity securities, limited liability companies, convertible preferred securitiescompany units and Simple Agreement for Future Equity (“SAFE”) investments.

Fair Value as of December 31, 2022
MillionsArk/WM OutriggerKuduOtherTotal
Kudu’s Participation Contracts$— $695.9 $— $695.9 
PassportCard/DavidShield
— — 135.0 135.0 
Elementum Holdings, L.P.— — 30.0 30.0 
Other unconsolidated entities (1)
— — 37.2 37.2 
Total unconsolidated entities— 695.9 202.2 898.1 
Private equity funds and hedge funds40.4 — 157.4 197.8 
Bank loan fund174.8 — — 174.8 
ILS funds— — 49.3 49.3 
Lloyd’s trust deposits137.4 — — 137.4 
Private debt instruments— — 9.6 9.6 
Other21.0 — — 21.0 
Total other long-term investments$373.6 $695.9 $418.5 $1,488.0 
(1) Includes White Mountains’s noncontrolling equity interests in certain preferred securities, private common equity securities, limited liability company units and SAFE.




F - 27


Private Equity Funds and Hedge Funds
White Mountains invests in private equity funds and hedge funds, which are included in other long-term investments. The fair value of these investments is generally estimated using the net asset value (“NAV”)NAV of the funds. As of December 31, 2021,2023, White Mountains held investments in 1216 private equity funds and 1two hedge fund.funds.  The largest investment in a single private equity fund or hedge fund was $31.3$57.3 million and $49.0 million as of December 31, 20212023 and $29.1 million as of December 31, 2020.2022.
The following table presents the fair value of investments and unfunded commitments in private equity funds and hedge funds by investment objective and sector as of December 31, 20212023 and 2020:2022:
December 31, 2021December 31, 2020 December 31, 2023December 31, 2022
MillionsMillionsFair ValueUnfunded
Commitments
Fair ValueUnfunded
Commitments
MillionsFair ValueUnfunded
Commitments
Fair ValueUnfunded
Commitments
Private equity fundsPrivate equity funds    
Private equity funds
Private equity funds  
Aerospace/Defense/GovernmentAerospace/Defense/Government$69.8 $11.8 $69.1 $15.3 
Financial servicesFinancial services67.7 29.3 23.5 30.4 
Real estateReal estate4.3 2.9 — — 
Manufacturing/Industrial  28.6 — 
Total private equity funds
Total private equity funds
Total private equity fundsTotal private equity funds141.8 44.0 121.2 45.7 
Hedge fundsHedge funds    
Hedge funds
Hedge funds  
Long/short equity financials and business services
European small/mid capEuropean small/mid cap12.0  — — 
Total hedge fundsTotal hedge funds12.0  — — 
Total private equity funds and hedge funds
included in other long-term investments
Total private equity funds and hedge funds
included in other long-term investments
$153.8 $44.0 $121.2 $45.7 

F - 28


Investments in private equity funds are generally subject to a lock-up period during which investors may not request a redemption. Distributions prior to the expected termination date of the fund may be limited to dividends or proceeds arising from the liquidation of the fund’s underlying investments. In addition, certain private equity funds have the option to extend the lock-up period.
The following table presents investments in private equity funds that were subject to lock-up periods as of December 31, 2021:2023:
MillionsMillions1 – 3 years3 – 5 years5 – 10 years>10 yearsTotalMillions1 – 3 years3 – 5 years5 – 10 years>10 yearsTotal
Private equity funds — expected lock-up period remainingPrivate equity funds — expected lock-up period remaining$.1 $13.9 $116.3 $11.5 $141.8 

Investors in private equity funds are generally subject to indemnification obligations outside of the capital commitment period and prior to the winding up of the fund. As of December 31, 20212023 and 2020,2022, White Mountains is not aware of any indemnification claims relating to its investments in private equity funds. 
Redemption of investments in most hedge funds is subject to restrictions, including lock-up periods where no redemptions or withdrawals are allowed, restrictions on redemption frequency and advance notice periods for redemptions. Amounts requested for redemptions remain subject to market fluctuations until the redemption effective date, which generally falls at the end of the defined redemption period. Advance notice requirements for redemptions from White Mountains’s hedge fund investment is subjectinvestments range from 45 to a perpetual two-year restriction on redemption frequency from90 days. One of White Mountains’s hedge fund investments also limits redemptions to every second anniversary following the date of the initial investment in the fund and a 90-days advanced notice period requirement.investment.

Lloyd’s Trust Deposits
White Mountains’s other long-term investments include Lloyd’s trust deposits, which consists of non-U.K. deposits and Canadian comingled pooled funds. The Lloyd’s trust deposits invest primarily in short-term government securities, agency securities and corporate bonds held in trusts that are managed by Lloyd's of London. These investments are required of Lloyd's syndicates to protect policyholders in non-U.K. markets and are pledged into Lloyd’s trust accounts to provide a portion of the capital needed to support obligations at Lloyd’s. The fair value of the Lloyd’s trust deposits is generally estimated using the NAV of the funds. As of December 31, 2021, White Mountains held Lloyd’s trust deposits with a fair value of $113.8 million.

Bank Loan Fund
White Mountains’s other long-term investments include a bank loan fund with a fair value of $163.0$194.4 million and $174.8 million as of December 31, 2021.2023 and 2022. The fair value of this investment is estimated using the NAV of the fund. The bank loan fund’s investment objective is to provide, on an unleveraged basis, high current income consistent with preservation of capital and low duration. The bank loan fund primarily invests in a broad portfolio of U.S. dollar-denominated, non-investment grade, floating-rate senior secured loans and may invest in other financial instruments, such as secured and unsecured corporate debt, credit default swaps, reverse repurchase agreements, synthetic indices and cash and cash equivalents.
The investment in the bank loan fund is subject to restrictions on redemption frequency and advance notice periods for redemptions. Amounts requested for redemptions remain subject to market fluctuations until the redemption effective date, which generally falls at the end of the defined redemption period. White Mountains may redeem all or a portion of its bank loan fund investment as of any calendar month-end upon 15 calendar days advanced written notice.

F - 28


Lloyd’s Trust Deposits
White Mountains’s other long-term investments include Lloyd’s trust deposits, which consist of non-U.K. deposits and Canadian comingled pooled funds. The Lloyd’s trust deposits invest primarily in short-term government securities, agency securities and corporate bonds held in trusts that are managed by Lloyd's of London. These investments are generally required of Lloyd's syndicates to protect policyholders in non-U.K. markets and are pledged into Lloyd’s trust accounts to provide a portion of the capital needed to support obligations at Lloyd’s. The fair value of the Lloyd’s trust deposits is generally estimated using the NAV of the funds. As of December 31, 2023 and 2022, White Mountains held Lloyd’s trust deposits with a fair value of $158.0 million and $137.4 million.

Insurance-Linked Securities Funds
White Mountains’s other long-term investments include ILS fund investments. The fair value of these investments is generally estimated using the NAV of the funds. As of December 31, 2021,2023 and 2022, White Mountains held investments in ILS funds with a fair value of $51.9$160.5 million and $49.3 million.
Investments in ILS funds are generally subject to restrictions, including lock-up periods where no redemptions or withdrawals are allowed, non-renewal clauses, restrictions on redemption frequency and advance notice periods for redemptions. From time to time, natural catastrophe, liquidity, market or other events will occur that make the determination of fair value for underlying investments in ILS funds less certain due to the potential for loss development. In such circumstances, the impacted investments may be subject to additional lock-up provisions.
ILS funds are typically subject to monthly and annual restrictions on redemptions and advance redemption notice period requirements that range between 30 and 90 days. Amounts requested for redemption remain subject to market fluctuations until the redemption effective date, which is generally falls at the end of the defined redemption period.
One of the ILS funds in White Mountains’s portfolio requires shareholders to provide advance redemption notice onperiod or before September 15 of each calendar year. Amounts requested for redemption in this fund remain subject to market fluctuation untilwhen the underlying investment has fully matured or been commuted, which may be up to a period of three years from the start of each calendar year.commuted.


F - 29


Rollforward of Level 3 Investments

Level 3 measurements as of December 31, 20212023 and 20202022 consist of securities for which the estimated fair value has not been determined based upon quoted market price inputs for identical or similar securities. The following table presents the changes in White Mountains’s fair value measurements for Level 3 investments for the years ended December 31, 20212023 and 2020:2022:

Level 3 Investments
MillionsOther Long-term
Investments
Common
Equity
Securities
Other Long-term
Investments and
Investment in
MediaAlpha pre-IPO
Balance at December 31, 2020$614.2 Balance at December 31, 2019$.1 654.0 
Net realized and unrealized gains117.3 Net realized and unrealized gains— 275.6 
Amortization/accretion Amortization/accretion— — 
Purchases225.4 Purchases— 151.5 
Sales(75.9)Sales(.1)(8.2)
Effect of Ark Transaction9.6 
Effect of MediaAlpha IPO (1)
— (458.7)
Transfers in Transfers in— — 
Transfers out Transfers out— — 
Balance at December 31, 2021$890.6 Balance at December 31, 2020$— $614.2 
(1) Represents the reclassification of White Mountains’s investment in MediaAlpha from a level 3 measurement to a level 1 measurement in connection with
the MediaAlpha IPO. See Note 2 - “Significant Transactions”.
Level 3 Investments
MillionsOther Long-term
Investments
Other Long-term
Investments
Balance as of December 31, 2022$911.6 Balance as of December 31, 2021$890.6 
Net realized and unrealized gains157.3 Net realized and unrealized gains60.4 
Purchases and contributions256.6 Purchases and contributions129.8 
Sales and distributions(187.3)Sales and distributions(169.2)
Transfers in Transfers in— 
Transfers out Transfers out— 
Balance as of December 31, 2023$1,138.2 Balance as of December 31, 2022$911.6 

Fair Value Measurements — Transfers Between Levels - For Years Ended December 31, 20212023 and 20202022
Transfers between levels are recorded using the fair value measurement as of the end of the quarterly period in which the event or change in circumstance giving rise to the transfer occurred.
During 20212023 and 2020,2022, there were no fixed maturity investments or other long-term investments classified as Level 3 measurements in the prior period that were transferred to Level 2 measurements.
During 20212023 and 2020,2022, there were no fixed maturity investments or other long-term investments classified as Level 2 measurements in the prior period that were transferred to Level 3 measurements.
During 2020, in connection with the MediaAlpha IPO, White Mountains’s investment in MediaAlpha was reclassified from a Level 3 measurement to a Level 1 measurement.


F - 3029


Significant Unobservable Inputs

The following tables present significant unobservable inputs used in estimating the fair value of White Mountains’s other long-term investments classified within Level 3 as of December 31, 20212023 and 2020.2022. The tables below exclude $46.7$19.0 million and $27.6$41.1 million of Level 3 other long-term investments generally valued based on recent or expected transaction prices. The fair value of investments in private equity funds and hedge funds, bank loan funds, Lloyd’s trust deposits bank loans funds and ILS funds are generally estimated using the NAV of the funds.

$ in Millions$ in MillionsDecember 31, 2021$ in MillionsDecember 31, 2023
DescriptionDescription
Valuation Technique(s) (1)
Fair Value (2)
Unobservable InputsDescription
Valuation Technique(s) (1)
Fair Value (2)
Unobservable Inputs
Discount Rate (6)
Discount Rate (6)
Terminal Cash Flow Exit Multiple (x) or Terminal Revenue Growth Rate (%) (6)
Discount Rate (6)
Terminal Cash Flow Exit Multiple (x) or Terminal Revenue Growth Rate (%) (6)
Kudu’s Participation Contracts (3)(4)(5)
Kudu’s Participation Contracts (3)(4)(5)
Kudu’s Participation Contracts (3)(4)(5)
Kudu’s Participation Contracts (3)(4)(5)
Discounted cash flow
$669.518% - 23%7x - 13x
Discounted cash flow
$890.518% - 25%7x - 22x
PassportCard/DavidShieldPassportCard/DavidShieldDiscounted cash flow$120.023%4%PassportCard/DavidShieldDiscounted cash flow$150.024%4%
Elementum Holdings, L.P.Elementum Holdings, L.P.Discounted cash flow$45.017%4%Elementum Holdings, L.P.Discounted cash flow$35.021%4%
Private debt investmentsDiscounted cash flow$9.48%N/A
Preferred securitiesPreferred securitiesDiscounted cash flow$28.28%N/A
Private debt instrumentsPrivate debt instrumentsDiscounted cash flow$15.511% - 12%N/A
(1) Key inputs to the discounted cash flow analysis generally include projections of future revenue and earnings, discount rates and terminal exit multiples or growth rates.
(2) Includes the net unrealized investment gains (losses) associated with foreign currency; foreign currency effects based on observable inputs.
(3)Since Kudu’s Participation Contracts are not subject to corporate taxes within Kudu Investment Management, LLC, pre-tax discount rates are applied to pre-tax cash flows in determining fair values. The weighted average discount rate and weighted average terminal cash flow exit multiple applied to Kudu’s Participation Contracts was 20% and 13x.
(4) In 2023, Kudu deployed a total of $163.8 into new and existing Participation Contracts.
(5) As of December 31, 2023, one of Kudu’s Participation Contracts with a total fair value of $69.1 was valued using a probability weighted expected return method, which takes into account factors such as a discounted cash flow analysis, the expected value to be received in a pending sales transaction and the likelihood that a sales transaction will take place.
(6) Increases (decreases) to the discount rates in isolation would result in lower (higher) fair value measurements, while increases (decreases) to the terminal cash flow exit multiples or terminal revenue growth rates in isolation would result in higher (lower) fair value measurements.

$ in MillionsDecember 31, 2022
Description
Valuation Technique(s) (1)
Fair Value (2)
Unobservable Inputs
Discount Rate (6)
Terminal Cash Flow Exit Multiple (x) or Terminal Revenue Growth Rate (%) (6)
Kudu’s Participation Contracts (3)(4)(5)
Discounted cash flow$695.918% - 25%7x - 16x
PassportCard/DavidShieldDiscounted cash flow$135.024%4%
Elementum Holdings, L.P.Discounted cash flow$30.021%4%
Private debt instrumentsDiscounted cash flow$9.611%N/A
(1) Key inputs to the discounted cash flow analysis generally include projections of future revenue and earnings, discount rates and terminal exit multiples or growth rates.
(2) Includes the net unrealized investment gains (losses) associated with foreign currency; foreign currency effects based on observable inputs.
(3) Since Kudu’s Participation Contracts are not subject to corporate taxes within Kudu Investment Management, LLC, pre-tax discount rates are applied to pre-tax cash flows in determining fair values. The weighted average discount rate and weighted average terminal cash flow exit multiple applied to Kudu’s Participation Contracts is 20%21% and 10x.12x.
(4) In 2021,2022, Kudu deployed a total of $223.4 in$99.8 into new and existing Kudu Participation Contracts, including TIG Advisors, TK Partners, Third Eye Capital Management, Douglass Winthrop Advisors, Granahan Investment Management and Radcliffe Capital Management.Contracts.
(5) As of December 31, 2021, one2022, two of Kudu’s Participation Contracts with a total fair value of $78.8 was$189.0 were valued using a probability weighted expected return method, which was based ontakes into account factors such as a discounted cash flow analysis, the expected value to be received in a pending sales transaction and an expected sale transaction.
(6) Increases (decreases) to the discount rates in isolation would result in lower (higher) fair value measurements, while increases (decreases) to the terminal cash flow exit multiples or terminal revenue growth rates in isolation would result in higher (lower) fair value measurements.

$ in MillionsDecember 31, 2020
Description
Valuation Technique(s) (1)
Fair Value (2)
Unobservable Inputs
Discount Rate (6)
Terminal Cash Flow Exit Multiple (x) or Terminal Revenue Growth Rate (%) (6)
Kudu’s Participation Contracts (3)(4)
Discounted cash flow$400.618% - 23%7x - 12x
PassportCard/DavidShield (5)
Discounted cash flow$95.023%4%
Elementum Holdings, L.P.Discounted cash flow$55.117%4%
Private debt investmentsDiscounted cash flow$17.14% - 8%N/A
OtherDiscounted cash flow$18.820% - 24%4%
(1) Key inputs to the discounted cash flow analysis generally include projections of future revenue and earnings, discount rates and terminal exit multiples or growth rates.
(2) Includes the net unrealized investment gains (losses) associated with foreign currency; foreign currency effects based on observable inputs.
(3)Since Kudu’s Participation Contracts are not subject to corporate taxes within Kudu Investment Management, LLC, pre-tax discount rates are applied to pre-tax cash flows in determining fair values. The weighted average discount rate and weighted average terminal cash flow exit multiple applied to Kudu’s Participation Contracts is 20% and 10x.
(4) In 2020, Kudu deployedlikelihood that a total of $118.2 in new Kudu Participation Contracts, including Creation Investments Capital, Sequoia Financial Group, Channel Capital and Ranger Investment Management.
(5) In 2020, White Mountains made an additional $15.0 investment in PassportCard/DavidShield. See Note 2 “Significant Transactions”.sales transaction will take place.
(6) Increases (decreases) to the discount rates in isolation would result in lower (higher) fair value measurements, while increases (decreases) to the terminal cash flow exit multiples or terminal revenue growth rates in isolation would result in higher (lower) fair value measurements.


F - 3130


Note 4. Goodwill and Other Intangible Assets

    White Mountains accounts for business combinations using the acquisition method. Under the acquisition method, White Mountains recognizes and measures the assets acquired, liabilities assumed and any non-controllingnoncontrolling interest in the acquired entities at their acquisition date fair values. Goodwill represents the excess of the amount paid to acquire businesses over the fair value of identifiable net assets at the date of acquisition. The estimated acquisition date fair values, generally consisting of intangible assets and liabilities for contingent consideration, may be recorded at provisional amounts in circumstances where the information necessary to complete the acquisition accounting is not available at the reporting date. Any such provisional amounts are finalized as measurement period adjustments within one year of the acquisition date.
The following table presents the economic lives, acquisition date fair values, accumulated amortization and net carrying valuesvalue for other intangible assets and goodwill by company as of December 31, 20212023 and 2020:2022:
$ in MillionsWeighted Average Economic
 Life
(in years)
December 31, 2021December 31, 2020
Acquisition Date Fair ValueAccumulated AmortizationImpairments and Amounts Allocated to Held for SaleNet Carrying ValueAcquisition Date Fair ValueAccumulated AmortizationImpairmentsNet Carrying Value
Goodwill:
ArkN/A$116.8 $ $ $116.8 $— $— $ $— 
NSM (1)
N/A533.4  30.2 503.2 506.4 — — 506.4 
KuduN/A7.6   7.6 7.6 — — 7.6 
Other OperationsN/A17.9   17.9 11.5 — — 11.5 
Total goodwill675.7  30.2 645.5 525.5 — — 525.5 
Other intangible
   assets:
Ark
Underwriting
   Capacity
N/A175.7   175.7 — — — — 
NSM (1)
   Customer
      relationships
9.0159.9 57.0 3.5 99.4 136.2 36.7 3.5 96.0 
   Trade names1868.6 11.9 1.0 55.7 65.4 8.3 1.0 56.1 
   Information
     technology
     platform
03.1 1.4 1.7  3.1 1.4 1.7 — 
Renewal rights1282.5 15.8  66.7 82.5 4.9 — 77.6 
Other3.31.1 .7 — .4 1.7 1.0 — .7 
      Subtotal315.2 86.8 6.2 222.2 288.9 52.3 6.2 230.4 
Kudu
   Trade names72.2 .9  1.3 2.2 .6 — 1.6 
Other Operations
   Trade names17.58.2 1.5  6.7 3.6 .3 — 3.3 
Customer
   relationships
13.018.8 4.5 — 14.3 14.2 1.4 — 12.8 
Insurance
   licenses (2)
N/A  —  8.6 — — 8.6 
Other5.3.3 .1  .2 .3 .1 — .2 
Subtotal27.3 6.1  21.2 26.7 1.8 024.9 
Total other intangible assets520.4 93.8 6.2 420.4 317.8 54.7 6.2 256.9 
Total goodwill and other
   intangible assets
$1,196.1 $93.8 $36.4 1,065.9 $843.3 $54.7 $6.2 782.4 
Goodwill and other intangible assets attributed to non-controlling interests(117.6)(28.1)
Goodwill and other intangible assets included in White Mountains’s common
   shareholders’ equity
$948.3 $754.3 
(1) During 2021, NSM’s goodwill and intangible assets includes $(1.5) and $(0.3) of the effect of foreign currency translation. During 2020, NSM’s goodwill and intangible assets includes $13.4 and $1.6 of the effect of foreign currency translation.
(2) As of December 31, 2021, White Mountains has classified one of its Other Operating Businesses as held for sale, which includes of $8.6 of insurance licenses. See Note. 21 — “Held for Sale and Discontinued Operations”.
$ in MillionsWeighted Average Economic
 Life
(in years)
December 31, 2023December 31, 2022
Acquisition Date Fair ValueAccumulated AmortizationNet Carrying ValueAcquisition Date Fair ValueAccumulated AmortizationNet Carrying Value
Goodwill:
ArkN/A$116.8 $ $116.8 $116.8 $— $116.8 
KuduN/A7.6  7.6 7.6 — 7.6 
Other OperationsN/A44.4  44.4 52.1 — 52.1 
Total goodwill168.8  168.8 176.5 — 176.5 
Other intangible assets:
Ark
Underwriting capacityN/A175.7  175.7 175.7 — 175.7 
Kudu
   Trade names7.02.2 1.5 .7 2.2 1.2 1.0 
Other Operations
   Trade names13.313.3 4.1 9.2 17.9 3.0 14.9 
Customer relationships10.924.8 10.3 14.5 29.5 7.5 22.0 
Other12.12.8 1.1 1.7 2.8 .5 2.3 
Subtotal40.9 15.5 25.4 50.2 11.0 39.2 
Total other intangible assets218.8 17.0 201.8 228.1 12.2 215.9 
Total goodwill and other intangible assets
$387.6 $17.0 370.6 $404.6 12.2 392.4 



F - 32


Intangible Assets Valuation Methods

The goodwill recognized for the entities shown above is attributed to expected future cash flows. The acquisition date fair values of other intangible assets with finite lives are estimated using income approach techniques, which use future expected cash flows to develop a discounted present value amount.
The multi-period-excess-earnings method estimates fair value using the present value of the incremental after-tax cash flows attributable solely to the other intangible asset over its remaining life. This approach was used to estimate the fair value of other intangible assets associated with trade names,the underwriting capacity and customer relationships and contracts and information technology.relationships.
The relief-from-royalty method was used to estimate fair value for other intangible assets that relate to rights that could be obtained via a license from a third-party owner. Under this method, the fair value is estimated using the present value of license fees avoided by owning rather than leasing the asset. This technique was used to estimate the fair value of domaintrade names, patents and certain trademarks and brand names.information technology platforms.
The with-or-without method estimates the fair value of an other intangible assetassets that providesprovide an incremental benefit. Under this method, the fair value of the other intangible asset is calculated by comparing the value of the entity with and without the other intangible asset. This approach was used to estimate the fair value of favorable lease terms.non-compete agreements.
On at least an annual basis beginning no later than the interim period included in the one-year anniversary of an acquisition, White Mountains evaluates goodwill and other intangible assets for potential impairment. Between annual evaluations, White Mountains considers changes in circumstances or events subsequent to the most recent evaluation that may indicate that an impairment may existexists and, if necessary will perform an interim review for potential impairment.
The following table presents a summary ofDuring the acquisition date fair values ofyear ended December 31, 2023 and 2022, White Mountains did not recognize any impairments to goodwill and other intangible assets for acquisitions completed during 2021 and 2020:
$ in Millions
Acquisition of Subsidiary/ Asset
Goodwill and
Other Intangible Assets (1)
Acquisition Date
Kingsbridge$131.7April 7, 2020
J.C. Taylor55.7August 6, 2021
Total NSM segment$187.4
Ark$292.5January 1, 2021
Other Operations$31.1Various
(1) Acquisition date fair values include the effect of adjustments during the measurement period and excludes the effect of foreign currency translation subsequent to the acquisition date.




assets.

F - 3331


Rollforward of Goodwill and Other Intangible Asset Rollforward

The following table presents the change in goodwill and other intangible assets:
December 31, 2021December 31, 2020
MillionsGoodwillOther Intangible AssetsTotal Goodwill and Other Intangible AssetsGoodwillOther Intangible AssetsTotal Goodwill and Other Intangible Assets
Beginning balance$525.5 $256.9 $782.4 $394.7 $260.0 $654.7 
Acquisition of businesses (1)
71.5  71.5 140.0 — 140.0 
Ark Transaction116.8 175.7 292.5 — — — 
Attribution of acquisition date fair value
   estimates between goodwill and other
   intangible assets (2)
(36.5)36.5  (23.2)23.2 — 
Measurement period adjustments(5)
(.1) (.1).6 6.6 7.2 
Dispositions of businesses   — — — 
Amortization (39.8)(39.8)— (28.3)(28.3)
Impairments (3)
   — (6.2)(6.2)
Assets held for sale0(8.6)(8.6)— — — 
Loss on assets held for sale (4)
(30.2) (30.2)— — — 
Foreign currency translation(1.5)(.3)(1.8)13.4 1.6 15.0 
Ending balance$645.5 $420.4 $1,065.9 $525.5 $256.9 $782.4 
December 31, 2023December 31, 2022
MillionsGoodwillOther Intangible AssetsTotal Goodwill and Other Intangible AssetsGoodwillOther Intangible AssetsTotal Goodwill and Other Intangible Assets
Beginning balance$176.5 $215.9 $392.4 $142.3 $198.2 $340.5 
Acquisition of businesses (1)
   59.5 — 59.5 
Disposition of businesses (2)
(6.7)(6.9)(13.6)   
Attribution of acquisition date fair value
   estimates between goodwill and other
   intangible assets
   (22.9)22.9 — 
Measurement period adjustments (3)
(1.0) (1.0)(2.4)— (2.4)
Amortization (7.2)(7.2)— (5.2)(5.2)
Ending balance$168.8 $201.8 $370.6 $176.5 $215.9 $392.4 
(1)During 2021, amounts include acquisition of J.C. Taylor of $55.7 and Relates to acquisitions within Other Operations of $15.8. During 2020, amounts include acquisition of Kingsbridge of $125.1 and acquisitions within Other Operations of $14.9.Operations.
(2)During 2021, the attribution of acquisition date fair value estimates between goodwill and other intangible assets were $27.2 for the acquisition of J.C. Taylor and $9.3 for acquisitions within Other Operations segment. During 2020, the attribution of acquisition date fair value estimates between goodwill and other intangible assets were $13.6 for the acquisition of Kingsbridge and $9.6 for acquisitions within Other Operations segment.
(3) In 2020, impairments relate to NSM’s UK vertical.
(4) Relates to the sale of NSM’s Fresh Insurance’s motor business recorded in 2021. This amount excludes $1.5 of net proceeds related to the sale.a disposition within Other Operations.
(5)     (3)Measurement period adjustments relate to updated information about acquisition date fair values of assets acquired and liabilities assumed. During 2021, adjustmentsAdjustments relate to acquisitions within the Other Operations segment. During 2020, adjustments primarily relate to contingent considerations of $4.1 in connection with the acquisition of Kingsbridge and the remaining amount related to acquisitions within Other Operations segment.

Operations.

During the years ended December 31, 20212023 and 2020,2022, White Mountains did not recognize any impairments to goodwill.
On April 12, 2021, NSM sold Fresh Insurance’s motor business. During 2021, in connection with the sale, White Mountains recognized a loss of $28.7 million. See Note 21 — “Held for Sale and Discontinued Operations”.
During 2020, White Mountains recognized impairments of other intangible assets of $6.2 million related to the UK vertical. The impairments related to lower premium volumes, including due to the impact of the COVID-19 pandemic, and certain reorganization initiatives at the UK vertical.
During 2019, White Mountains recognized an impairment of other intangible assets of $2.4 million related to Fresh Insurance and impairments of goodwill and other intangible assets of $7.6 million and $0.4 million, respectively, related to Other Operations. Impairment charges are presented within general and administrative assets expenses for the segments affected on the statement of operations.assets.

F - 34


Amortization of Other Intangible Assets

Amortization expense was $39.8$7.2 million, $28.3$5.2 million and $21.8$4.6 million for the years ended December 31, 2021, 20202023, 2022 and 2019.2021.
White Mountains expects to recognize amortization expense in each of the next five years as presented in the following table presents:table:
MillionsMillionsAmortization ExpenseMillionsAmortization Expense
2022$39.4 
202336.0 
2024202432.7 
2025202530.5 
2026 and years after106.1 
2026
2027
2028 and years after
Total (1)
Total (1)
$244.7 
(1) Excludes Ark’s indefinite-lived intangible assets of $175.7.


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Note 5.  Loss and Loss Adjustment Expense Reserves

Ark establishes loss and LAE reserves that are estimates of amounts needed to pay claims and related expenses in the future for insured events that have already occurred. TheArk’s process of estimating reserves involves a considerable degree of judgment by management and, as of any given date, is inherently uncertain.
WM Outrigger Re entered into collateralized quota share agreements with GAIL to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2023 underwriting year. WM Outrigger Re’s quota share reinsurance agreement with GAIL, including its loss and LAE reserves, eliminates in White Mountains’s consolidated financial statements.
HG Re and BAM do not have any outstanding loss and LAE reserves related to BAM’s municipal bond guarantee business.
Loss and LAE reserves are typically comprised of case reserves for claims reported and reserves for losses that have occurred but for which claims have not yet been reported, referred to as IBNR reserves. IBNR reserves include a provision for expected future development on case reserves. Case reserves are estimated based on the experience and knowledge of claims staff regarding the nature and potential cost of each claim and are adjusted as additional information becomes known or payments are made. IBNR reserves are derived by subtracting paid loss and LAE and case reserves from estimates of ultimate loss and LAE. Actuaries estimate ultimate loss and LAE using various generally accepted actuarial methods applied to known losses and other relevant information. Like case reserves, IBNR reserves are adjusted as additional information becomes known or payments are made.
Losses and LAE are categorized by the year in which the policy is underwritten (the year of account, or underwriting year) for purposes of Ark’s claims management and estimation of the ultimate loss and LAE reserves. For purposes of Ark’s reporting under GAAP, losses and LAE are categorized by the year in which the claim is incurred (the accident year).
Ultimate loss and LAE are generally determined by extrapolation of claimclaims emergence and settlement patterns observed in the past that can reasonably be expected to persist into the future. In forecasting ultimate loss and LAE with respect tofor any line of business, past experience with respect to that line of business is the primary resource, but cannot be relied upon in isolation. Ark’s own experience, particularly claims development experience, such as trends in case reserves, payments on and closings of claims, as well as changes in business mix and coverage limits, is the most important information for estimating its reserves. External data, available from organizations such as the Lloyd’s Market Association, consulting firms and other insurance and reinsurance companies, is used to supplement or corroborate Ark’s own experience. External data can be especially useful for estimating costs on newer lines of business. Ultimate loss and LAE for major losses and catastrophes are estimated based on the known and expected exposures to the loss event, rather than simply relying on the extrapolation of reported and settled claims.
For some lines of business, such as long-tail coverages discussed below, claims data reported in the most recent years of account are often too limited to provide a meaningful basis for analysis due to the typical delay in reporting and settling of claims. For this type of business, Ark uses an expected loss ratio method for the initial years of account. This is a standard and accepted actuarial reserve estimation method in these circumstances in which the loss ratio is selected based upon information used in pricing policies for that line of business, as well as any publicly available industry data, such as industry pricing, experience and trends, for that line of business.

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trends.
Uncertainties in estimating ultimate loss and LAE are magnified by the time lag between when a claim actually occurs and when it is reported and eventually settled. This time lag is sometimes referred to as the “claim-tail”. The claim-tail for reinsurance and insurance obtained through brokers, MGAs and reinsurance intermediaries (collectively, the “insurance and reinsurance intermediaries”) is further extended because claims are first reported to either the original primary insurance company or the insurance and reinsurance intermediaries. The claim-tail for most property coverages is typically short (usually a few days up to a few months). Settlements for casualty/liability coverages can extend for long periods of time as claims are often reported and ultimately paid or settled years after the related loss events occur. During the long claims reporting and settlement period, additional facts regarding coverages written in prior years of account, as well as about actual claims and trends, may become known and, as a result, Ark may adjust its reserves. The inherent uncertainties of estimating reserves are increased by the diversity of loss development patterns among different types of reinsurance treaties, facultative contracts or direct insurance contracts, the necessary reliance on the ceding companies and insurance and reinsurance intermediaries for information regarding reported claims and the differing reserving practices among ceding companies and insurance and reinsurance intermediaries.
If management determines that an adjustment is appropriate, the adjustment is booked in the accounting period in which such determination is made. Accordingly, should reserves need to be increased or decreased in the future from amounts currently established, future results of operations would be negatively or positively impacted.
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In determining ultimate loss and LAE, the cost to indemnify claimants, provide needed legal defense and other services for insureds and administer the investigation and adjustment of claims are considered. These claimclaims costs are influenced by many factors that change over time, such as expanded coverage definitions as a result of new court decisions, inflation in costs to repair or replace damaged property, inflation in the cost of medical services, and legislated changes in statutory benefits, as well as by the particular, unique facts that pertain to each claim. As a result, the rate at which claims arose in the past and the costs to settle them may not always be representative of what will occur in the future. The factors influencing changes in claimclaims costs are often difficult to isolate or quantify and developments in paid and incurred losses from historical trends are frequently subject to multiple and conflicting interpretations. Changes in coverage terms or claims handling practices may also cause future experience and/or development patterns to vary from the past. A key objective of actuaries in developing estimates of ultimate loss and LAE and resulting IBNR reserves is to identify aberrations and systemic changes occurring within historical experience and accurately adjust for them so that the future can be projected more reliably. Because of the factors previously discussed, this process requires the use of informed judgment and is inherently uncertain.
Ark performs an actuarial review of its recorded loss and LAE reserves each quarter, using several generally accepted actuarial methods to evaluate its loss reserves, each of which has its own strengths and weaknesses. Management places more or less reliance on a particular method based on the facts and circumstances at the time the reserve estimates are made. These methods generally fall into one of the following categories or are hybrids of one or more of the following categories:

Historical paid loss development methods: These methods use historical loss payments over discrete periods of time to estimate future losses. Historical paid loss development methods assume that the ratio of losses paid in one period to losses paid in an earlier period will remain constant. These methods necessarily assume that factors that have affected paid losses in the past, such as inflation or the effects of litigation, will remain constant in the future. Because historical paid loss development methods do not use case reserves to estimate ultimate losses, they can be more reliable than the other methods discussed below that look to case reserves (such as actuarial methods that use incurred losses) in situations where there are significant changes in how case reserves are established by a company’s claims adjusters. However, historical paid loss development methods are more leveraged, meaning that small changes in payments have a larger impact on estimates of ultimate losses, than actuarial methods that use incurred losses because cumulative loss payments take much longer to approach the expected ultimate losses than cumulative incurred amounts. In addition, and for similar reasons, historical paid loss development methods are often slow to react to situations when new or different factors arise than those that have affected paid losses in the past.


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Historical incurred loss development methods: These methods, like historical paid loss development methods, assume that the ratio of losses in one period to losses in an earlier period will remain constant in the future. However, instead of using paid losses, these methods use incurred losses (i.e., the sum of cumulative historical loss payments plus outstanding case reserves) over discrete periods of time to estimate future losses. Historical incurred loss development methods can be preferable to historical paid loss development methods because they explicitly take into account open cases and the claims adjusters’ evaluations of the cost to settle all known claims. However, historical incurred loss development methods necessarily assume that case reserving practices are consistently applied over time. Therefore, when there have been significant changes in how case reserves are established, using incurred loss data to project ultimate losses can be less reliable than other methods.

Expected loss ratio methods: These methods are based on the assumption that ultimate losses vary proportionately with premiums. Expected loss ratios are typically developed based upon the information used in pricing and are multiplied by the total amount of premiums earned to calculate ultimate losses. Expected loss ratio methods are useful for estimating ultimate losses in the early years of long-tailedlong-tail lines of business, when little or no paid or incurred loss information is available.

Bornhuetter-Ferguson methods: These methods are a blend of the expected loss ratio and loss development methods. The percent of incurred (or paid) loss to ultimate loss implied by the selected development pattern from the incurred (or paid) loss development method is used to determine the percentage of ultimate loss yet to be developed. Inception to date losses are added to losses yet to be developed, yielding an estimate of ultimate for each year of account.

Adjusted historical paid and incurred loss development methods: These methods take traditional historical paid and incurred loss development methods and adjust them for the estimated impact of changes from the past in factors such as inflation, the speed of claim paymentsclaims payment or the adequacy of case reserves. Adjusted historical paid and incurred loss development methods are often more reliable methods of predicting ultimate losses in periods of significant change, provided the actuaries can develop methods to reasonably quantify the impact of changes.

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As part of Ark’s quarterly actuarial review, Ark compares the previous quarter’s projections of incurred, paid and case reserve activity, including amounts incurred but not reported, to actual amounts experienced in the quarter. Differences between previous estimates and actual experience are evaluated to determine whether a given actuarial method for estimating loss and LAE reserves should be relied upon to a greater or lesser extent than it hadhas been in the past. While some variance is expected each quarter due to the inherent uncertainty in estimating loss and LAE reserves, persistent or large variances would indicate that prior assumptions and/or reliance on certain actuarial methods may need to be revised going forward.
Upon completion of each quarterly review, Ark selects indicated loss and LAE reserve levels based on the results of the actuarial methods described previously, which are the primary consideration in determining management's best estimate of required loss and LAE reserves. However, in making its best estimate, management also considers other qualitative factors that may lead to a difference between held reserves and the actuarial central estimate of reserves. Typically, these qualitative factors are considered when management and Ark’s actuaries conclude that there is insufficient historical incurred and paid loss information or that trends included in the historical incurred and paid loss information are not likely to repeat in the future. Such qualitative factors include, among others, recent entry into new markets or new products, improvements in the claims department that are expected to lessen future ultimate loss costs, legal and regulatory developments or other uncertainties that may arise.


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Reinsurance Contracts Accounted for as Deposits
Reinsurance contracts that do not meet the risk transfer requirements necessary to be accounted for as reinsurance are accounted for using the deposit method. Under the deposit method, ceded premiums paid are not recognized through income but rather treated as a deposit.
BAM entered into three ceded reinsurance agreements with Fidus Re Ltd. (“Fidus Re”), a Bermuda-based special purpose insurer created in 2018 solely to provide reinsurance protection to BAM. BAM also entered into an excess of loss reinsurance agreement (the “XOLT”) with HG Re. The financing expenses paid by BAM under these reinsurance agreements are recorded in general and administrative expenses. See Note 10 — “Municipal Bond Guarantee Insurance”.
Ark Reserve Estimation by Linehas an aggregate excess of Businessloss contract with SiriusPoint Ltd. (“SiriusPoint”), formerly Third Point Reinsurance Ltd., which is accounted for using the deposit method and recorded within other assets. Ark earns an annual crediting rate of 3.0%, which is recorded within other revenue. See Note 6 — “Third-Party Reinsurance”.

Revenue Recognition
Kudu’s revenues are primarily generated from Participation Contracts, which are noncontrolling equity interests in revenue and earnings participation contracts with asset and wealth management firms. Kudu’s Participation Contracts are measured at fair value with the change therein recognized within net realized and unrealized investment gains (losses). Distributions from Kudu’s clients are recognized through investment income when Kudu’s right to receive payment has been established and can be reliably measured, which generally occurs on a quarterly basis in accordance with the terms of the Participation Contracts.
White Mountains’s Other Operations recognizes agent commissions and other revenues when it has satisfied its performance obligations. Deferred revenues associated with unsatisfied performance obligations are recognized within other liabilities.

Cost of Sales
White Mountains’s Other Operations’ cost of sales consists of salaries and related expenses, professional services and marketing and advertising expenses directly related to sales generation. These expenses are recognized as incurred.
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Goodwill and Other Intangible Assets
Goodwill represents the excess of the amount paid to acquire subsidiaries over the fair value of identifiable net assets at the date of acquisition. Other intangible assets consist primarily of underwriting capacity, customer relationships and trade names.
Goodwill and other intangible assets with indefinite lives are not amortized, but rather are evaluated for impairment on an annual basis, or whenever indications of potential impairment exist. In the absence of any indications of potential impairment, the evaluation of goodwill and indefinite-lived intangible assets is performed no later than the interim period in which the anniversary of the acquisition date falls. White Mountains initially evaluates goodwill using a qualitative approach (step zero) to determine whether it is more likely than not that the implied fair value of goodwill is greater than its carrying value. If White Mountains determines, based on this qualitative review, that it is more likely than not that an impairment may exist, then White Mountains performs a quantitative analysis to compare the fair value of a reporting unit with its carrying value. If the carrying value exceeds the estimated fair value, then an impairment charge is recognized through current period pre-tax income (loss).
Other intangible assets with finite lives are initially measured at their acquisition date fair values and subsequently amortized over their economic lives. Other intangible assets with finite lives are presented net of accumulated amortization on the balance sheet. Other intangible assets with finite lives are reviewed for impairment when events occur or there are changes in circumstances indicating that their carrying value may exceed fair value. Impairment exists when the carrying value of other intangible assets exceeds fair value. See Note 4 — “Goodwill and Other Intangible Assets”.
Incentive Compensation
White Mountains’s Long-Term Incentive Plan (the “WTM Incentive Plan”) provides for grants of various types of share-based and non-share-based incentive awards to key employees of White Mountains. Non-share-based awards are recognized over the related service periods based on management’s best estimate of the amounts at which the awards are expected to be paid. Share-based compensation which is typically settled in cash, such as performance shares, is classified as a liability-type award. The processcompensation cost for liability-classified awards is measured initially at the grant date fair value and remeasured each reporting period until settlement. The compensation cost for equity-classified awards expected to be settled in shares, such as options and restricted shares, is measured at the original grant date fair value of establishing lossthe award. The compensation cost for all awards is recognized for the vested portion of the awards over the related service periods. See Note 12 — “Employee Share-Based Incentive Compensation Plans”.

Income Taxes
White Mountains has subsidiaries and LAE reserves, including amounts incurred but not reported, is complexbranches that operate in various jurisdictions around the world and imprecise as it must consider many variables that are subject to tax in the outcome of future events.jurisdictions in which they operate.  As a result, informed subjective estimates and judgments as to the ultimate exposure to losses are an integral component of the loss and LAE reserving process. Ark categorizes and tracks insurance and reinsurance reserves by “reserving class of business” for each underwriting office, London and Bermuda, and then aggregates the reserving classes by line of business, which are summarized herein as property and accident & health, marine & energy, specialty, casualty - active and casualty - runoff.
Ark regularly reviews the appropriateness of its loss and LAE reserves at the reserving class of business level, considering a variety of trends that impact the ultimate settlement of claims for the subsets of claims in each particular reserving class.
For loss and LAE reserves as of December 31, 2021, Ark considers2023, the primary jurisdictions in which the Company’s subsidiaries and branches operate and were subject to tax include Israel, Luxembourg, the United Kingdom and the United States. Income earned or losses generated by companies outside the United States are generally subject to an overall effective tax rate lower than that imposed by the impactUnited States.
Deferred tax assets and liabilities are recorded when a difference between the carrying amounts of assets and liabilities for financial reporting purposes and the various reserving factors, as described below,amounts for tax purposes exists, and for other temporary differences. The deferred tax asset or liability is recorded based on tax rates expected to be in effect when the difference reverses. Deferred tax assets represent amounts available to reduce income taxes payable in future paid losses would be similar to the impact of those factors on historical paid losses.
The major causes of material uncertainty (i.e., reserving factors) generally will vary for each line of business, as well as for each separately analyzed reserving class of business within the line of business. Also, reserving factors can have offsettingperiods. White Mountains records a valuation allowance against deferred tax assets if it becomes more likely than not that all or compounding effects on estimated loss and LAE reserves. In almost all cases, it is impossible to discretely measure the effecta portion of a single reserving factor and construct a meaningful sensitivity expectation. Actual resultsdeferred tax asset will likely varynot be realized. Changes in valuation allowances from expectations for eachperiod to period are included in income tax expense in the period of these assumptions, resulting in an ultimate claim liability that is different from that being estimated currently.
Additional causes of material uncertainty exist in most product lines and may impact the types of claims that could occur within a particular line of business or reserving class of business. Examples where reserving factors, within a line of business or reserving class of business, are subject to change include changing types of insured (e.g., type of insured vehicle, size of account, industry insured, jurisdiction), changing underwriting standards, or changing policy provisions (e.g., deductibles, policy limits, endorsements)change. See Note 8 — “Income Taxes”.
Following is a detailed description of the reserve factors and consideration for each of the major product lines.

Property and Accident & Health
Ark’s property and accident & health reserving line of business contains short-tailed reserving classes. As such, reserving for these classes generally involves less uncertainty given the speed of settlement.
For property reserving classes, the reserve risk is driven primarily by occasional catastrophe events, though the financial effect of these is mitigated by reinsurance and retrocessional purchases. Ark writes property business on both an insurance and reinsurance basis. The insurance business primarily consists of direct and facultative contracts. However, some business is written through lineslips and MGA binding authorities, which could have a longer tail due to the increased exposure period caused by underlying policies attaching to the binder contract. The reinsurance business can also have a longer tail due to timing delays resulting from attachment points on excess of loss contracts.
For accident & health reserving classes, the losses emanate from a wide range of personal accident, sickness, travel and medical insurance risks. The underlying business is a mix of direct and facultative contracts, as well as some MGA and reinsurance contracts, which are typically shorter tail lines. Certain smaller components of the accident & health business can be longer-tailed. The accident & health business is also exposed to occasional catastrophic events though not to the same degree as the property business.

Marine & Energy
Ark’s marine & energy reserving line of business is underwritten on both an insurance and reinsurance basis and can be broken down into physical damage on marine risks, physical damage on upstream energy platforms, and marine & energy liabilities.
The marine reserving classes consist primarily of marine hull, cargo and specie risks. These all generally have some element of transportability, which mitigates the catastrophe risk exposure. For example, having the ability to move out of the path of a hurricane if provided with sufficient notice. The marine reserving classes are generally shorter-tailed.
The energy platform reserving classes cover risks that are less transportable and therefore are exposed to catastrophe events similar to property reserving classes. Other energy reserving classes cover construction contracts, which often have considerably protracted exposure periods with the bulk of the risk towards end of the coverage period. This can have the effect of increasing the tail on an otherwise short-tail reserving class.
The marine & energy liability reserving classes, which represent a smaller portion of the marine & energy business, are typically longer-tailed compared to physical damage reserving classes.

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SpecialtyLeases
Ark’s specialty portfolio is comprisedWhite Mountains has entered into lease agreements, primarily for office space and equipment. These leases are classified as operating leases, with lease expense recognized on a straight-line basis over the term of the lease. Lease assets and liabilities are not recorded for leases with a diverse portfolioterm at inception of insuranceone year or less. Lease incentives, such as free rent or landlord reimbursements for leasehold improvements, are recognized at lease inception and reinsurance subclassesamortized on a straight-line basis over the term of business. Certain subclassesthe lease. Lease expense and the amortization of businessleasehold improvements are exposed to both catastrophe eventsrecognized within general and man-made loss events, for example terrorism, political violence and space. Although these subclasses have different coverage and exposures, they are all short-tailed in nature and have similar reserving features.

Casualty – Active and Casualty – Runoff
Ark’s casualty reserving lines of business, which include casualty–active and casualty–runoff, are long-tailed classes of business. Consequently, the ultimate liability may not be known at the date of loss, which results in greater uncertainty when reserving for casualty lines.
The casualty–active line of business consists of U.S. reinsurance and insurance risks written on an excess of loss basis. The casualty–runoff line of business consists of international reinsurance risks and U.S. casualty insurance risks written through an MGA binding authority. The losses arising from these lines of business are primarilyadministrative expenses. Lease payments related to medical malpractice, professional liabilityoptions to extend or renew the lease term are excluded from the calculation of lease liabilities unless White Mountains is reasonably certain of exercising those options.
As of December 31, 2023 and general liability coverages, which are long-tailed lines of business.
Casualty policies are generally written on either a claims made or occurrence basis. On a claims made basis,2022, the trigger of loss is based onright-of-use (“ROU”) assets were $20.3 million and $25.2 million, and the date that the loss is reported. On an occurrence basis, the trigger of loss is the date that the loss occurred. Due to delays between loss occurrencelease liabilities were $22.0 million and loss reporting, business written on an occurrence basis can be longer-tailed than business written on a claims made basis.
There are a number of common reserving factors for casualty lines that can affect the estimated casualty reserves, including:
Changes in claim-handling practices, both in-house and through third-party claims administrators,
Changes in court interpretations of policy provisions, and
Trends in litigation or jury awards.$27.1 million.

Cumulative NumberNoncontrolling Interests
Noncontrolling interests consist of Reported Claimsthe ownership interests of noncontrolling shareholders in consolidated subsidiaries and are presented separately on the balance sheet. The portion of comprehensive income (loss) attributable to noncontrolling interests is presented net of related income taxes in the statement of operations and comprehensive income (loss). See Note 13 — “Common Shareholders’ Equity and Noncontrolling Interests”.

Foreign Currency Exchange
The functional currencies for White Mountains’s non-U.S. based subsidiaries are measured, in most instances, using currencies other than the U.S. dollar. Net foreign exchange gains and losses arising from the translation of functional currencies are generally reported in shareholders’ equity, in accumulated other comprehensive income (loss).
White Mountains also invests in securities denominated in foreign currencies. Assets and liabilities recorded in these foreign currencies are translated into U.S. dollars at exchange rates in effect at the balance sheet date, and revenues and expenses are converted using the weighted average exchange rates for the period.
As of December 31, 2023 and 2022, White Mountains had unrealized foreign currency translation losses of $1.6 million and $3.5 million recorded in accumulated other comprehensive income (loss) on its consolidated balance sheet.

Fair Value Measurements
Fair value measurements are categorized into a hierarchy that distinguishes between inputs based on market data from independent sources (observable inputs) and a reporting entity’s internal assumptions based upon the best information available when external market data is limited or unavailable (unobservable inputs). Quoted prices in active markets for identical assets or liabilities have the highest priority (Level 1), followed by observable inputs other than quoted prices, including prices for similar but not identical assets or liabilities (Level 2), and unobservable inputs, including the reporting entity’s estimates of the assumptions that market participants would use, having the lowest priority (Level 3). See Note 18 — “Fair Value of Financial Instruments”.

Business Combinations
White Mountains accounts for purchases of businesses using the acquisition method, which requires the measurement of assets acquired, including other intangible assets, and liabilities assumed, including contingent liabilities, at their estimated fair values as of the acquisition date. The acquisition date fair values represent management’s best estimates and are based upon established valuation techniques, reasonable assumptions and, where appropriate, valuations performed by independent third parties. In circumstances where additional information is required in order to determine the acquisition date fair value of balance sheet amounts, provisional amounts may be recorded as of the acquisition date and may be subject to subsequent adjustment throughout the measurement period, which is up to one year from the acquisition date. Measurement period adjustments are recognized in the period in which they are determined. The results of operations and cash flows of businesses acquired are included in the consolidated financial statements from the date of acquisition. White Mountains accounts for purchases of other intangible assets that do not meet the definition of a business as asset acquisitions. Asset acquisitions are recognized at the amount of consideration paid, which is deemed to equal fair value.

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Note 2. Significant Transactions

Bamboo Transaction

On October 19, 2023, White Mountains entered into an agreement and plan of merger (the “Bamboo Merger Agreement”) with Bamboo Ide8 Insurance Services LLC (“Bamboo MGA”) and John Chu, as the unitholders’ representative. Under the terms of the Bamboo Merger Agreement, White Mountains’s wholly-owned subsidiary, WM Pierce Merger Sub LLC, agreed to merge with and into Bamboo MGA, with Bamboo MGA continuing as the surviving company (the “Bamboo Merger”). Concurrently with the execution of the Bamboo Merger Agreement, certain Bamboo management unitholders agreed to rollover the majority of their existing equity in Bamboo MGA into PM Holdings LLC (“Bamboo Holdings”) (collectively with Bamboo MGA and Ide8 Limited (“Bamboo Captive”), “Bamboo”). White Mountains also agreed to make an equity contribution to Bamboo immediately following the Bamboo Merger (together with the Bamboo Merger and the rollover transactions, the “Bamboo Transaction”).
On January 2, 2024, White Mountains closed the Bamboo Transaction in accordance with the terms of the Bamboo Merger Agreement, investing $296.7 million in equity into Bamboo, which included the contribution of $36.0 million to retire Bamboo’s legacy credit facility and the contribution of $20.0 million of primary capital. The consideration is subject to customary purchase price adjustments. At closing, White Mountains owned 72.8% of Bamboo on a basic shares outstanding basis (63.7% on a fully-diluted/fully-converted basis, taking account of management’s equity incentives). At closing, 16.1% of basic shares outstanding are owned by Bamboo management (26.6% on a fully-diluted/fully-converted basis).
Bamboo is a capital-light, tech- and data-enabled insurance distribution platform providing homeowners’ insurance and related products to the residential property market in California. Bamboo operates primarily through Bamboo MGA, its full-service MGA business, where the company manages all aspects of the placement process on behalf of its fronting and reinsurance partners, including product development, marketing, underwriting, policy issuance and claims oversight, and it earns commissions based on the volume and profitability of the insurance that it places. It offers both admitted and non-admitted insurance products. Bamboo also operates two separate but integrated business models: (i) a retail agency, within Bamboo MGA, offering ancillary products (e.g., flood, earthquake) on behalf of third parties and (ii) Bamboo Captive, a Bermuda-domiciled captive reinsurer that participates in the underwriting risk of Bamboo’s MGA programs to align interests with reinsurance partners. Bamboo will be consolidated and presented as a reportable segment for periods after December 31, 2023.

NSM

On August 1, 2022, the NSM Transaction closed. White Mountains received $1.4 billion in net cash proceeds at closing and recognized a net transaction gain of $875.7 million, which was comprised of $886.8 million of net gain from sale of discontinued operations and $2.9 million of comprehensive income related to the recognition of foreign currency translation gains (losses) from the sale, partially offset by $14.0 million of compensation and other costs related to the transaction recorded in Other Operations.
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WM Outrigger Re

During the fourth quarter of 2022, Ark sponsored the formation of Outrigger Re Ltd., a Bermuda company registered as a special purpose insurer and segregated accounts company, to provide reinsurance capacity to Ark. On December 20, 2022, Outrigger Re Ltd. issued $250 million of non-voting redeemable preference shares on behalf of four segregated accounts to White Mountains and unrelated third-party investors. Upon issuance of the preference shares, Outrigger Re Ltd. entered into collateralized quota share agreements with GAIL to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2023 underwriting year. The proceeds from the issuance of the preference shares were deposited into collateral trust accounts to fund any potential obligations under the reinsurance agreements with GAIL. Outrigger Re Ltd.’s obligations under the reinsurance agreements with GAIL are subject to an aggregate limit equal to the assets in the collateral trusts. The terms of the reinsurance agreements are renewable upon the mutual agreement of Ark and the applicable preference shareholder of Outrigger Re Ltd.
During the fourth quarter of 2022, White Mountains purchased 100% of the preference shares linked to its segregated account, WM Outrigger Re, for $205.0 million. White Mountains consolidates WM Outrigger Re’s results in its financial statements. WM Outrigger Re’s quota share reinsurance agreement with GAIL eliminates in White Mountains’s consolidated financial statements.
During the fourth quarter of 2023, Ark renewed Outrigger Re Ltd. to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2024 underwriting year. Outrigger Re Ltd. was capitalized with $250.0 million for business written in the 2024 underwriting year, of which White Mountains rolled over $130.0 million from its commitment to the 2023 underwriting year. The remaining capital was provided by new and continuing unrelated third-party investors.
As of December 31, 2023 and 2022, short-term investments of $265.3 million and $203.7 million were held in a collateral trust, after expenses of $1.3 million.
During January 2024, White Mountains received an initial return of capital of $68.1 million from WM Outrigger Re for business written in the 2023 underwriting year. White Mountains expects to receive any additional return of capital and associated profits from business written in the 2023 underwriting year beginning in the second quarter of 2024.

Ark counts a claim for each unique combination of individual claimant and loss event. The claim is counted only if, net of any applicable deductibles, a payment has been made or a case reserve has been recorded or is anticipated to be recorded. A claim is still counted if the claim is closed with no payment. Bulk-coded losses are counted as one claim as underlying claim counts are not available.

DiscountingOn October 1, 2020, White Mountains entered into a subscription and purchase agreement (the “Ark SPA”) with Ark and certain selling shareholders (collectively with Ark, the “Ark Sellers”). Under the terms of the Ark SPA, White Mountains agreed to contribute $605.4 million of equity capital to Ark, at a pre-money valuation of $300.0 million, and to purchase $40.9 million of shares from the Ark Sellers. White Mountains also agreed to contribute up to an additional $200.0 million of equity capital to Ark in 2021. In accordance with the Ark SPA, in the fourth quarter of 2020 White Mountains pre-funded/placed in escrow a total of $646.3 million in preparation for closing the transaction, including $280.0 million funded directly to Lloyd’s on behalf of Ark under the terms of a credit facility agreement and $366.3 million placed in escrow, which is reflected on the balance sheet within Other Operations as of December 31, 2020.
On January 1, 2021, White Mountains completed the Ark Transaction in accordance with the terms of the Ark SPA. As of December 31, 2021, White Mountains owned 72.0% of Ark on a basic shares outstanding basis (63.0% after taking account of management’s equity incentives). The remaining shares are owned by employees. In the future, management rollover shareholders could earn additional shares in Ark if and to the extent that White Mountains achieves certain thresholds for its multiple of invested capital return. If fully earned, these additional shares would represent 12.5% of the shares outstanding at closing.
White Mountains recognized total assets acquired related to the Ark Transaction of $2.5 billion, including goodwill and other intangible assets of $292.5 million, and total liabilities of $1.7 billion, including contingent consideration of $22.5 million and noncontrolling interest of $220.2 million. Ark incurred transaction costs of $25.3 million in the first quarter of 2021.
In the third quarter of 2021, Ark issued $163.3 million of floating rate unsecured subordinated notes (the “Ark 2021 Subordinated Notes”) in three separate transactions. See Note 7 — “Debt”. In connection with the issuance of the Ark 2021 Subordinated Notes, White Mountains and Ark terminated White Mountains’s commitment to provide up to $200.0 million of additional equity capital to Ark in 2021.
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The following presents additional details of the assets acquired and liabilities assumed as of the January 1, 2021 acquisition date:
MillionsAs of January 1, 2021
Investments$594.3
Cash52.0(1)
Reinsurance recoverables433.4
Insurance premiums receivable236.7
Ceded unearned premiums170.2
Value of in-force business acquired71.7
Other assets88.9
Loss and loss adjustment expense reserves(696.0)
Unearned insurance premiums(326.1)
Debt(46.4)
Ceded reinsurance payable(528.3)
Other liabilities(25.9)
   Net tangible assets acquired24.5
Goodwill116.8
Other intangible assets - syndicate underwriting capacity175.7
Deferred tax liability on other intangible assets(33.4)
  Net assets acquired$283.6
(1) Cash excludes the White Mountains cash contribution of $605.4 as part of the Ark Transaction.

The values of net tangible assets acquired and the resulting goodwill, other intangible assets and contingent consideration were recorded at fair value using Level 3 inputs. The majority of the tangible assets acquired and liabilities assumed were recorded at their carrying values, as their carrying values approximated their fair values due to their short-term nature. The fair values of other intangible assets and the contingent consideration liability were estimated primarily based on the income approach. The income approach estimates fair value based on the present value of the cash flows that the assets are expected to generate in the future. White Mountains developed internal estimates for the expected future cash flows and discount rates used in the present value calculations.
The value of in-force business acquired represents the estimated profits relating to the unexpired contracts, net of related prepaid reinsurance, at the acquisition date through the expiration date of the contracts. During the years ended December 31, 2023, 2022 and 2021, Ark does notrecognized $0.0 million, $7.5 million and $64.2 million of amortization expense on the value of in-force business acquired. The value of the syndicate underwriting capacity intangible asset was estimated using net cash flows attributable to Ark’s rights to write business in the Lloyd’s market. The value of the in-force business acquired and the syndicate underwriting capacity were estimated using a discounted cash flow method. Significant inputs to the valuation models include estimates of growth in premium revenues, investment returns, claims costs, expenses and discount rates based on a weighted average cost of capital.
In evaluating the fair value of Ark’s loss and LAE reserves.loss adjustment expense reserves, White Mountains determined that the risk-free rate of interest was approximately equal to the risk factor reflecting the uncertainty within the reserves, and thus no adjustment was necessary. During the years ended December 31, 2023, 2022 and 2021, Ark recognized pre-tax expense of $48.7 million, $17.3 million and $5.5 million for the change in the fair value of its contingent consideration liabilities. Any future adjustments to contingent consideration liabilities will be recognized through pre-tax income (loss). As of December 31, 2023 and 2022, Ark recognized total contingent consideration liabilities of $94.0 million and $45.3 million.
Ark’s segment income and expenses for 2023, 2022 and 2021 are presented in Note 15 — “Segment Information.”

Impact
F - 19


Kudu

On May 26, 2022, Kudu raised $114.5 million of Third-Party Capitalequity capital (the “Kudu Transaction”) from Massachusetts Mutual Life Insurance Company (“Mass Mutual”), White Mountains and Kudu management. Mass Mutual, White Mountains and Kudu management contributed $64.1 million, $50.0 million and $0.4 million at a pre-money valuation of 1.3x book value, or $114.0 million, above the December 31, 2021 equity value of Kudu’s go-forward portfolio of Participation Contracts. The go-forward portfolio of Kudu’s Participation Contracts excluded $54.3 million of enterprise value as of December 31, 2021 relating to two portfolio companies that had announced sale transactions prior to the capital raise. As a result of the Kudu Transaction, White Mountains’s basic ownership of Kudu decreased from 99.1% to 89.3%.

Note 3. Investment Securities

White Mountains’s portfolio of investment securities held for general investment purposes consists of fixed maturity investments, short-term investments, common equity securities, its investment in MediaAlpha and other long-term investments.White Mountains’s portfolio of fixed maturity investments, including those within short-term investments, are classified as trading securities. Trading securities are reported at fair value as of the balance sheet date. Short-term investments also include interest-bearing money market funds and certificates of deposit that are carried at fair value. White Mountains’s portfolio of common equity securities, its investment in MediaAlpha and other long-term investments are measured at fair value.Other long-term investments consist primarily of unconsolidated entities, Kudu’s Participation Contracts, private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits, ILS funds and private debt instruments.White Mountains has taken the fair value option for its equity method eligible investments. See Note 16 — Equity Method Eligible Investments”. Net realized and unrealized investment gains (losses) are reported in pre-tax revenues.

Net Investment Income

White Mountains’s net investment income is comprised primarily of interest income associated with White Mountains’s fixed maturity investments and short-term investments, dividend income from common equity securities and distributions from other long-term investments.
The following table presents pre-tax net investment income for the years ended December 31, 2023, 2022 and 2021:

Year Ended December 31,
Millions202320222021
Fixed maturity investments$64.4 $41.4 $28.8 
Short-term investments52.0 16.4 .6 
Common equity securities4.1 1.6 .1 
Other long-term investments76.1 68.1 56.3 
Amount attributable to TPC Providers (1.0)(1.0)
Total investment income196.6 126.5 84.8 
Third-party investment expenses(2.4)(2.1)(2.3)
Net investment income, pre-tax$194.2 $124.4 $82.5 

F - 20


Net Realized and Unrealized Investment Gains (Losses)

The following table presents net realized and unrealized investment gains (losses) for the years ended December 31, 2023, 2022 and 2021:

Year Ended December 31,
Millions202320222021
Realized investment gains (losses)
Fixed maturity investments$(4.7)$(11.9)$3.9 
Short-term investments(.2)(1.4)(.1)
Common equity securities29.5 — .4 
Investment in MediaAlpha — 160.3 
Other long-term investments72.2 128.4 (7.7)
Net realized investment gains (losses)96.8 115.1 156.8 
Unrealized investment gains (losses)
Fixed maturity investments66.1 (168.4)(42.2)
Short-term investments1.9 (1.1)— 
Common equity securities47.1 (7.1)14.9 
Investment in MediaAlpha27.1 (93.0)(540.6)
Other long-term investments195.2 (43.8)172.7 
Net unrealized investment gains (losses)337.4 (313.4)(395.2)
Net realized and unrealized investment gains (losses), before
   amount attributable to TPC providers (1)
434.2 (198.3)(238.4)
Amount attributable to TPC Providers 6.8 (7.7)
Net realized and unrealized investment gains (losses)
$434.2 $(191.5)$(246.1)
Fixed maturity and short-term investments
   Net realized and unrealized investment gains (losses)$63.1 $(182.8)$(38.4)
Less: net realized and unrealized gains (losses) on investment
   securities sold during the period
4.7 (2.9)(8.4)
Net unrealized investment gains (losses) recognized during the
   period on investment securities held at the end of the period
$58.4 $(179.9)$(30.0)
Common equity securities and investment in MediaAlpha
Net realized and unrealized investment gains (losses) on
   common equity securities
$76.6 $(7.1)$15.3 
Net realized and unrealized investment gains (losses) from
   investment in MediaAlpha
27.1 (93.0)(380.3)
Total net realized and unrealized investment gains (losses)103.7 (100.1)(365.0)
Less: net realized and unrealized gains (losses) on investment
   securities sold during the period
28.4 — 20.3 
Net unrealized investment gains (losses) recognized during the
   period on investment securities held at the end of the period
$75.3 $(100.1)$(385.3)
(1) For 2023, 2022 and 2021, includes $13.6, $(29.3) and $(7.7) of net realized and unrealized investment gains (losses) related to foreign currency exchange.

For the years ended December 31, 2023, 2022 and 2021, all of account prior to the Ark Transaction, a significant proportion of the Syndicates’ underwriting capital was provided by TPC Providers using whole account reinsurance contracts with Ark’s corporate member. The TPC Providers’ participationWhite Mountains’s net realized and unrealized investment gains (losses) were recorded in the Syndicatesconsolidated statements of operations. There were no investment gains (losses) recorded in other comprehensive income.
White Mountains recognized gross realized investment gains of $113.7 million, $129.9 million and $212.3 million and gross realized investment losses of $16.9 million, $14.8 million and $55.5 million on sales of investment securities for the 2020years ending December 31, 2023, 2022 and 2019 open years of account is 42.8% and 58.3% of the total net result of the Syndicates. For the years of account subsequent to the Ark Transaction, Ark is no longer using TPC Providers to provide underwriting capital for the Syndicates.
A Reinsurance to Close (“RITC”) agreement is generally put in place after the third year of operations for a year of account such that the outstanding loss and LAE reserves, including future development thereon, are reinsured into the next year of account. As a result and in combination with the changing participation provided by TPC Providers, Ark’s participation on outstanding loss and LAE reserves reinsured into the next year of account may change, perhaps significantly. For example, during 2021, an RITC was executed such that the outstanding loss and LAE reserves for claims arising out of the 2018 year of account, for which the TPC Providers’ participation in the total net results of the Syndicates was 57.6%, were reinsured into the 2019 year of account, for which the TPC Providers’ participation in the total net results of the Syndicates is 58.3%.2021.
F - 39


Loss and Loss Adjustment Expense Reserve Summary

The following table summarizes the loss and LAE reserve activity of Ark’s insurance and reinsurance subsidiaries for the year ended December 31, 2021:

MillionsYear Ended
December 31, 2021
Gross beginning balance$696.0
Less: beginning reinsurance recoverable on unpaid losses (1)
(433.4)
Net loss and LAE reserves262.6
Losses and LAE incurred relating to:
      Current year losses336.3
      Prior year losses(21.5)
Net incurred losses and LAE314.8
Loss and LAE paid relating to:
Current year losses(43.9)
   Prior year losses(61.6)
Net paid losses and LAE(105.5)
Change in TPC Providers’ participation (2)
(2.2)
Foreign currency translation and other adjustments to loss and LAE reserves(3.9)
Net ending balance465.8
Plus: ending reinsurance recoverable on unpaid losses (1)
428.9
Gross ending balance$894.7
(1) The beginning reinsurance recoverable on unpaid losses and ending reinsurance recoverable on unpaid losses includes amounts attributable to TPC Providers of $319.2 and $276.8.
(2) Amount represents a decrease in net loss and LAE reserves due to a change in the TPC Providers’ participation during 2021, related to the RITC for the 2018 year of account.

During the year ended December 31, 2021, Ark experienced $21.5 million of net favorable loss reserve development. Ark’s net favorable loss reserve development was driven primarily by the accident & health ($8.9 million), casualty – ongoing ($3.7 million), specialty ($3.3 million) and casualty – runoff ($3.3 million) reserving lines of business. The favorable loss reserve development in the property and accident & health reserving line of business was driven primarily by positive claims experience within the 2018 and 2019 accident years.

F - 4021


The following table summarizespresents total net unrealized gains (losses) attributable to Level 3 investments for the unpaid lossyears ended December 31, 2023, 2022 and LAE reserves,2021 for investments still held at the end of the period:
Year Ended December 31,
Millions202320222021
Total net unrealized investment gains on other long-term investments held at
   the end of period, pre-tax
$133.9 $56.5 $98.9 

Proceeds from the sales and maturities of investments, excluding short-term investments, totaled $0.8 billion, $0.5 billion and $0.8 billion for the years ended December 31, 2023, 2022 and 2021.

Investment Holdings

The following tables present the cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses) and carrying value of reinsurance recoverables on unpaid losses, for each of Ark’s major reserving lines of businessWhite Mountains’s fixed maturity investments as of December 31, 2021:2023 and 2022:
December 31, 2023
MillionsCost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Net Foreign
Currency
Gains (Losses)
Carrying
Value
U.S. Government and agency obligations$209.0 $.3 $(4.4)$ $204.9 
Debt securities issued by corporations1,085.9 5.6 (45.4)(1.1)1,045.0 
Municipal obligations275.1 .9 (15.1) 260.9 
Mortgage and asset-backed securities417.2 2.0 (29.8) 389.4 
Collateralized loan obligations211.2 .4 (2.4)(.1)209.1 
Total fixed maturity investments$2,198.4 $9.2 $(97.1)$(1.2)$2,109.3 



Millions
As of
December 31, 2021
Property and Accident & Health$175.0 
Marine & Energy99.3 
Specialty85.2 
Casualty - Active37.4 
Casualty - Runoff68.4 
Other0.5
   Unpaid loss and LAE reserves, net of reinsurance recoverables on unpaid losses465.8 
Plus: Reinsurance recoverables on unpaid losses (1)
Property and Accident & Health145.2 
Marine & Energy70.2 
Specialty68.9 
Casualty - Active41.4 
Casualty - Runoff103.2 
   Total Reinsurance recoverables on unpaid losses (1)
428.9 
Total unpaid loss and LAE reserves$894.7
(1) The reinsurance recoverables on unpaid losses include amounts attributable to TPC Providers of $276.8.
December 31, 2022
MillionsCost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Net Foreign
Currency
Gains (Losses)
Carrying
Value
U.S. Government and agency obligations$216.6 $— $(10.2)$— $206.4 
Debt securities issued by corporations1,098.3 .6 (78.3)(1.8)1,018.8 
Municipal obligations281.6 .4 (23.4)— 258.6 
Mortgage and asset-backed securities288.7 — (34.5)— 254.2 
Collateralized loan obligations190.8 .1 (6.0)(2.0)182.9 
Total fixed maturity investments$2,076.0 $1.1 $(152.4)$(3.8)$1,920.9 

The following five tables include one table each for the property and accident & health, marine & energy, specialty, casualty-active and casualty-runoff reserving lines of business, and are presented net of reinsurance, which includes the impact of whole-account quota-share reinsurance arrangements related to TPC Providers. Through the annual RITC process, Ark’s participation on outstanding loss and LAE reserves on prior years of account can fluctuate.Depending on the change in the TPC Providers’ participation from one year of account to the next, the impact could be significant and is reflected in the tables on an accident year basis. The following table summarizes the participation of Ark’s TPC Providers by year of account:

2012201320142015201620172018201920202021
TPC Providers’
   Participation
— %— %66.2 %70.0 %59.6 %60.0 %57.6 %58.3 %42.8 %— %

Each of the five tables includes three sections.
The top section of the table presents, for each of the previous 10 accident years (1) cumulative total undiscounted incurred loss and LAE as of each of the previous 10 year-end evaluations, (2) total IBNR plus expected development on reported claims as of December 31, 2021, and (3) the cumulative number of reported claims as of December 31, 2021.
The middle section of the table presents cumulative paid loss and LAE for each of the previous 10 accident years as of each of the previous 10 year-end evaluations. Also included in this section is a calculation of the loss and LAE reserves as of December 31, 2021 which is then included in the reconciliation to the consolidated balance sheet presented above. The total unpaid loss and LAE reserves as of December 31, 2021 is calculated as the cumulative incurred loss and LAE from the top section less the cumulative paid loss and LAE from the middle section, plus any outstanding liabilities from accident years prior to 2012.
The bottom section of the table is supplementary information about the average historical claims duration as of December 31, 2021. It shows the weighted average annual percentage payout of incurred loss and LAE by accident year as of each age. For example, the first column is calculated as the incremental paid loss and LAE in the first calendar year for each given accident year (e.g. calendar year 2020 for accident year 2020, calendar year 2021 for accident year 2021) divided by the cumulative incurred loss and LAE as of December 31, 2021 for that accident year. The resulting ratios are weighted together using cumulative incurred loss and LAE as of December 31, 2021.
F - 41


Property and Accident & Health
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2021
Accident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claims
Unaudited
2012$84.1 $68.4 $65.1 $65.7 $60.2 $60.0 $60.4 $60.2 $60.2 $60.0 $— 2,710
201374.6 66.9 66.6 62.1 61.6 61.7 61.6 61.6 61.6 .4 2,586
201434.8 31.3 29.4 28.6 28.6 28.5 28.5 28.5 — 2,963
201519.8 17.4 16.2 16.0 15.9 15.9 15.9 .4 2,884
201621.7 16.9 17.9 18.0 17.9 18.0 (.3)3,478
201722.6 29.9 37.4 36.7 36.0 3.6 4,610
201837.5 44.2 46.3 44.5 1.5 4,270
201930.4 27.8 23.4 2.1 4,073
202062.9 61.5 15.2 4,532
2021162.1 70.8 2,860
Total$511.5 

Property and Accident & Health
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Accident Year2012201320142015201620172018201920202021
Unaudited
2012$14.2 $45.0 $53.6 $57.3 $58.2 $58.6 $58.7 $59.3 $59.4 $59.5 
201315.8 40.3 60.0 61.1 61.1 61.3 61.3 61.3 61.2 
201413.9 25.4 27.6 28.0 28.1 28.2 28.4 28.3 
20157.0 12.4 13.7 14.9 14.8 15.1 15.3 
20168.6 13.4 16.8 17.1 17.2 17.5 
201717.0 26.3 32.1 33.3 30.2 
201815.8 32.8 40.7 40.7 
20196.9 17.1 19.1 
202011.4 34.5 
202130.8 
Total337.1 
All outstanding liabilities before 2012, net of reinsurance.6 
Loss and LAE reserves, net of reinsurance$175.0 

Property and Accident & Health
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Unaudited
Years12345678910
31.5%33.4%19.2%5.7%1.2%1.4%0.8%0.3%—%0.1%

F - 4222


Marine & Energy
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2021
Accident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claims
Unaudited
2012$64.7 $55.1 $46.0 $42.8 $33.6 $32.8 $32.6 $32.0 $32.0 $32.1 $.1 2,428 
201364.9 50.8 41.9 31.6 31.0 29.9 29.7 29.6 29.9 (.2)2,641 
201441.3 27.2 17.4 16.2 14.7 14.3 14.4 14.4 .5 2,581 
201525.3 15.4 13.6 12.7 12.0 12.0 12.2 .2 3,390 
201622.3 18.1 16.0 15.1 14.9 15.1 .7 4,117 
201723.9 18.6 16.9 16.4 16.5 1.1 4,470 
201824.5 18.9 16.7 17.0 .5 3,487 
201919.3 17.3 17.2 .6 2,562 
202024.4 21.7 2.9 1,668 
202183.7 69.9 1,091 
Total$259.8 
The weighted average duration of White Mountains’s fixed income portfolio was 1.9 years, including short-term investments, and 3.3 years, excluding short-term investments, as of December 31, 2023.
The following table presents the cost or amortized cost and carrying value of White Mountains’s fixed maturity investments by contractual maturity as of December 31, 2023. Actual maturities could differ from contractual maturities because borrowers may have the right to call or prepay certain obligations with or without call or prepayment penalties.
December 31, 2023
MillionsCost or Amortized CostCarrying Value
Due in one year or less$319.9 $315.0 
Due after one year through five years845.0 813.9 
Due after five years through ten years303.4 287.0 
Due after ten years101.7 94.9 
Mortgage and asset-backed securities and
   collateralized loan obligations
628.4 598.5 
Total fixed maturity investments$2,198.4 $2,109.3 

Marine & Energy
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Accident Year2012201320142015201620172018201920202021
Unaudited
2012$8.1 $24.0 $27.4 $30.2 $30.6 $31.3 $31.7 $31.4 $31.3 $31.0 
20137.9 22.6 28.1 29.1 29.7 29.9 29.9 29.7 29.9 
20146.0 12.4 13.5 14.4 14.5 13.7 14.0 13.8 
20154.0 8.0 9.8 11.3 10.7 10.8 11.2 
20165.6 10.1 12.8 13.3 13.4 14.0 
20175.2 11.3 13.1 14.4 14.4 
20182.7 12.9 14.5 15.2 
20193.4 10.9 12.9 
20203.2 12.9 
20216.4 
Total161.7 
All outstanding liabilities before 2012, net of reinsurance1.2 
Loss and LAE reserves, net of reinsurance$99.3 
The following tables present the cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses) and carrying value of common equity securities, White Mountains’s investment in MediaAlpha and other long-term investments as of December 31, 2023 and 2022:
December 31, 2023
MillionsCost or
Amortized Cost
Gross Unrealized
Gains
Gross Unrealized LossesNet Foreign
Currency Gains (Losses)
Carrying
Value
Common equity securities$483.5 $62.3 $(1.2)$(6.2)$538.4 
Investment in MediaAlpha
$59.2 $195.7 $ $ $254.9 
Other long-term investments$1,655.7 $446.3 $(94.5)$(9.3)$1,998.2 

Marine & Energy
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Unaudited
Years12345678910
19.8%37.7%20.2%5.7%4.3%7.2%0.4%0.1%(0.4)%0.2%
December 31, 2022
MillionsCost or
Amortized Cost
Gross Unrealized
Gains
Gross Unrealized LossesNet Foreign
Currency Gains (Losses)
Carrying
Value
Common equity securities$660.6 $26.7 $(8.4)$(10.5)$668.4 
Investment in MediaAlpha
$— $168.6 $— $— $168.6 
Other long-term investments$1,340.8 $271.1 $(107.1)$(16.8)$1,488.0 


F - 4323


Specialty
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2021
Accident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claims
Unaudited
2012$43.1 $36.1 $31.8 $30.8 $26.7 $25.8 $26.3 $26.6 $26.8 $26.8 $2.1 887
201348.6 34.9 25.6 17.5 16.9 17.1 16.9 17.3 17.3 1.3 1,122
201451.1 51.1 41.9 41.3 41.5 42.9 43.5 43.5 (.3)1,409
201521.3 13.0 10.4 10.1 10.6 10.7 10.8 1.7 1,876
201615.9 11.7 8.7 9.2 9.0 9.3 (1.3)1,941
201716.0 11.9 10.9 10.5 10.6 1.5 2,179
201812.1 13.9 14.8 13.7 2.4 2,090
201916.6 14.6 13.5 2.8 2,315
202020.7 19.7 6.2 1,925
202167.3 57.4 1,341
Total$232.5 
Fair Value Measurements by Level
The following tables present White Mountains’s fair value measurements for investments as of December 31, 2023 and 2022 by level. See Note 1 — “Basis of Presentation and Significant Accounting Policies”. The major security types were based on the legal form of the securities. White Mountains has disaggregated its fixed maturity investments based on the issuing entity type, which impacts credit quality, with debt securities issued by U.S. government entities carrying minimal credit risk, while the credit and other risks associated with other issuers, such as corporations, municipalities or entities issuing mortgage and asset-backed securities vary depending on the nature of the issuing entity type. White Mountains further disaggregates debt securities issued by corporations by industry sector because investors often reference commonly used benchmarks and their subsectors to monitor risk and performance. Accordingly, White Mountains has further disaggregated this asset class into subclasses based on the similar sectors and industry classifications it uses to evaluate investment risk and performance against commonly used benchmarks, such as the Bloomberg Barclays U.S. Intermediate Aggregate.
December 31, 2023
MillionsFair ValueLevel 1Level 2Level 3
Fixed maturity investments:
U.S. Government and agency obligations$204.9 $204.9 $ $ 
Debt securities issued by corporations: 
Financials309.8  309.8  
Consumer214.6  214.6  
Industrial121.6  121.6  
Healthcare121.3  121.3  
Technology108.9  108.9  
Utilities70.2  70.2  
Communications46.3  46.3  
Energy28.9  28.9  
Materials23.4  23.4  
Total debt securities issued by corporations1,045.0  1,045.0  
Municipal obligations260.9  260.9  
Mortgage and asset-backed securities389.4  389.4  
Collateralized loan obligations209.1  209.1  
Total fixed maturity investments2,109.3 204.9 1,904.4  
Short-term investments1,487.9 1,457.6 30.3  
Common equity securities:
Exchange-traded funds137.8 137.8   
Other (1)
400.6  400.6  
Total common equity securities538.4 137.8 400.6  
Investment in MediaAlpha254.9 254.9   
Other long-term investments1,164.4  26.2 1,138.2 
Other long-term investments NAV (2)
833.8    
Total other long-term investments1,998.2  26.2 1,138.2 
Total investments$6,388.7 $2,055.2 $2,361.5 $1,138.2 
(1) Consists of investments in listed funds that predominantly invest in international equities.
(2) Consists of private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits and ILS funds for which fair value is measured using NAV as a practical expedient. Investments for which fair value is measured at NAV are not classified within the fair value hierarchy.

Specialty
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Accident Year2012201320142015201620172018201920202021
Unaudited
2012$16.3 $25.2 $22.2 $22.6 $23.2 $23.3 $24.2 $24.4 $24.4 $24.5 
201317.1 13.6 15.2 15.8 15.8 16.0 16.0 16.0 16.0 
201426.8 39.7 40.4 40.8 41.5 42.8 43.6 43.5 
20154.1 7.2 7.8 8.2 8.2 8.3 8.3 
20163.2 8.0 9.2 10.0 10.4 10.5 
20173.3 6.8 8.4 8.5 8.5 
20182.9 8.1 9.8 10.3 
20194.9 7.1 7.6 
20205.4 10.9 
20215.2 
Total145.3 
All outstanding liabilities before 2012, net of reinsurance(2.0)
Loss and LAE reserves, net of reinsurance$85.2 

F - 24


December 31, 2022
MillionsFair ValueLevel 1Level 2Level 3
Fixed maturity investments:    
U.S. Government and agency obligations$206.4 $206.4 $— $— 
Debt securities issued by corporations:    
Financials291.2 — 291.2 — 
Consumer191.9 — 191.9 — 
Industrial115.4 — 115.4 — 
Healthcare121.3 — 121.3 — 
Technology123.7 — 123.7 — 
Utilities73.8 — 73.8 — 
Communications47.9 — 47.9 — 
Energy33.9 — 33.9 — 
Materials19.7 — 19.7 — 
Total debt securities issued by corporations1,018.8 — 1,018.8 — 
Municipal obligations258.6 — 258.6 — 
Mortgage and asset-backed securities254.2 — 254.2 — 
Collateralized loan obligations182.9 — 182.9 — 
Total fixed maturity investments1,920.9 206.4 1,714.5 — 
Short-term investments924.1 924.1 — — 
Common equity securities:
Exchange-traded funds333.8 333.8 — — 
Other (1)
334.6 — 334.6 — 
Total common equity securities668.4 333.8 334.6 — 
Investment in MediaAlpha168.6 168.6 — — 
Other long-term investments926.4 — 14.8 911.6 
Other long-term investments NAV (2)
561.6 — — — 
Total other long-term investments1,488.0 — 14.8 911.6 
Total investments$5,170.0 $1,632.9 $2,063.9 $911.6 
(1) Consists of investments in listed funds that predominantly invest in international equities.
(2) Consists of private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits and ILS funds for which fair value is measured using NAV as a practical expedient. Investments for which fair value is measured at NAV are not classified within the fair value hierarchy.

Specialty
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Unaudited
Years12345678910
34.0%33.8%7.3%0.5%4.6%4.4%4.6%3.1%(3.5)%(1.0)%
Investments Held on Deposit or as Collateral

As of December 31, 2023 and 2022, investments of $585.6 million and $500.5 million were held in trusts required to be maintained in relation to HG Global’s reinsurance agreements with BAM.
HG Global is required to maintain an interest reserve account in connection with its senior notes issued in 2022. As of December 31, 2023 and 2022, the fair value of the interest reserve account, which is included in short-term investments, was $30.4 million and $31.2 million. See Note 7 — “Debt”.
BAM is required to maintain deposits with certain insurance regulatory agencies in order to maintain its insurance licenses. The fair value of such deposits, which represent state deposits and are included within the investment portfolio, totaled $4.6 million as of both December 31, 2023 and 2022.
Lloyd’s trust deposits are generally required of Lloyd's syndicates to protect policyholders in non-U.K. markets and are pledged into Lloyd’s trust accounts to provide a portion of the capital needed to support obligations at Lloyd’s. As of December 31, 2023 and 2022, Ark held Lloyd’s trust deposits with a fair value of $158.0 million and $137.4 million.
The underwriting capacity of a member of Lloyd’s must be supported by providing a deposit (“Funds at Lloyd’s”) in the form of cash, securities or letters of credit in an amount determined by Lloyd’s. The amount of such deposit is calculated for each member through the completion of an annual capital adequacy exercise. These requirements allow Lloyd’s to evaluate that each member has sufficient assets to meet its underwriting liabilities plus a required solvency margin. As of December 31, 2023 and 2022, the fair value of Ark’s Funds at Lloyd’s investment deposits totaled $344.7 million and $319.2 million.
As of December 31, 2023 and 2022, Ark held additional investments on deposit or as collateral for insurance regulators and reinsurance counterparties of $244.5 million and $257.0 million.
F - 25


As of December 31, 2023 and 2022, Ark has $198.9 million and $90.3 million of short-term investments pledged as collateral under uncommitted standby letters of credit. See Note 7 — “Debt”.
As of December 31, 2023 and 2022, short-term investments of $265.3 million and $203.7 million were held in a collateral trust account required to be maintained in relation to WM Outrigger Re’s reinsurance agreement with GAIL.
Kudu is required to maintain an interest reserve account in connection with its credit facility. As of December 31, 2023, the interest reserve account of $14.9 million was held in short term investments. As of December 31, 2022 the interest reserve account of $12.2 million was held in restricted cash. See Note 7 - “Debt.”

Debt Securities Issued by Corporations

The following table presents the credit ratings of debt securities issued by corporations held in White Mountains’s investment portfolio as of December 31, 2023 and 2022:
Fair Value as of December 31,
Millions20232022
AAA$11.5 $11.3 
AA83.8 96.0 
A552.4 567.9 
BBB390.9 337.7 
Other6.4 5.9 
Debt securities issued by corporations (1)
$1,045.0 $1,018.8 
(1)    Credit ratings are based upon issuer credit ratings provided by Standard & Poor’s Financial Services LLC (“Standard & Poor’s”), or if unrated by Standard & Poor’s, long-term obligation ratings provided by Moody’s Investor Service, Inc.

Mortgage and Asset-backed Securities and Collateralized Loan Obligations

The following table presents the fair value of White Mountains’s mortgage and asset-backed securities and collateralized loan obligations as of December 31, 2023 and 2022:
 December 31, 2023December 31, 2022
MillionsFair ValueLevel 2Level 3Fair ValueLevel 2Level 3
Mortgage-backed securities:      
Agency:      
FNMA$198.8 $198.8 $ $124.5 $124.5 $— 
FHLMC137.2 137.2  78.8 78.8 — 
GNMA30.2 30.2  28.3 28.3 — 
Total agency (1)
366.2 366.2  231.6 231.6 — 
Non-agency: Residential.2 .2  .3 .3 — 
Total non-agency.2 .2  .3 .3 — 
Total mortgage-backed securities366.4 366.4  231.9 231.9 — 
Other asset-backed securities:
Credit card receivables3.3 3.3  11.9 11.9 — 
Vehicle receivables17.2 17.2  10.4 10.4 — 
Other2.5 2.5  — — — 
Total other asset-backed securities23.0 23.0  22.3 22.3 — 
Total mortgage and asset-backed securities389.4 389.4  254.2 254.2 — 
Collateralized loan obligations:209.1 209.1  182.9 182.9 — 
Total mortgage and asset-backed securities and
   collateralized loan obligations
$598.5 $598.5 $ $437.1 $437.1 $— 
(1) Represents publicly traded mortgage-backed securities which carry the full faith and credit guaranty of the U.S. Government (i.e., GNMA) or are guaranteed by a government sponsored entity (i.e., FNMA, FHLMC).

As of December 31, 2023, White Mountains’s investment portfolio included $209.1 million of collateralized loan obligations that are within the senior tranches of their respective fund securitization structures. All of White Mountains’s collateral loan obligations were rated AAA or AA as of December 31, 2023.

F - 26


Investment in MediaAlpha

Following the MediaAlpha IPO, White Mountains’s investment in MediaAlpha is accounted for at fair value based on the publicly traded share price of MediaAlpha’s common stock and is presented as a separate line item on the balance sheet.
During the second quarter of 2023, White Mountains completed a tender offer to purchase 5.9 million additional shares of MediaAlpha at a purchase price of $10.00 per share. As of December 31, 2023, White Mountains owned 22.9 million shares, representing a 34.9% basic ownership interest (33.1% on a fully-diluted/fully-converted basis). See Note 16 — “Equity Method Eligible Investments.” At White Mountains’s current level of ownership, each $1.00 per share increase or decrease in the share price of MediaAlpha will result in an approximate $9.00 per share increase or decrease in White Mountains’s book value per share. At the December 31, 2023 closing price of $11.15 per share, the fair value of White Mountains’s investment in MediaAlpha was $254.9 million.

Other Long-Term Investments

Fair Value as of December 31, 2023
MillionsArk/WM OutriggerKuduOtherTotal
Kudu’s Participation Contracts$ $890.5 $ $890.5 
PassportCard/DavidShield
  150.0 150.0 
Elementum Holdings, L.P.  35.0 35.0 
Other unconsolidated entities (1)
  48.1 48.1 
Total unconsolidated entities 890.5 233.1 1,123.6 
Private equity funds and hedge funds55.5  257.4 312.9 
Bank loan fund194.4   194.4 
ILS funds  160.5 160.5 
Lloyd’s trust deposits158.0   158.0 
Private debt instruments  10.0 10.0 
Other33.0 5.8  38.8 
Total other long-term investments$440.9 $896.3 $661.0 $1,998.2 
(1) Includes White Mountains’s noncontrolling equity interests in certain preferred securities, private common equity securities, limited liability company units and Simple Agreement for Future Equity (“SAFE”) investments.

Fair Value as of December 31, 2022
MillionsArk/WM OutriggerKuduOtherTotal
Kudu’s Participation Contracts$— $695.9 $— $695.9 
PassportCard/DavidShield
— — 135.0 135.0 
Elementum Holdings, L.P.— — 30.0 30.0 
Other unconsolidated entities (1)
— — 37.2 37.2 
Total unconsolidated entities— 695.9 202.2 898.1 
Private equity funds and hedge funds40.4 — 157.4 197.8 
Bank loan fund174.8 — — 174.8 
ILS funds— — 49.3 49.3 
Lloyd’s trust deposits137.4 — — 137.4 
Private debt instruments— — 9.6 9.6 
Other21.0 — — 21.0 
Total other long-term investments$373.6 $695.9 $418.5 $1,488.0 
(1) Includes White Mountains’s noncontrolling equity interests in certain preferred securities, private common equity securities, limited liability company units and SAFE.




F - 4427


Casualty - Active
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2021
Accident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claims
Unaudited
2012$22.6 $21.1 $17.7 $16.2 $10.1 $9.9 $11.0 $11.0 $11.3 $11.1 $.8 1,016 
201323.2 18.8 15.0 8.3 8.1 8.9 8.8 9.0 8.9 1.3 1,134 
201417.1 13.8 7.5 7.0 8.0 7.8 7.8 7.7 1.2 1,359 
201512.3 7.7 6.0 7.0 6.5 6.4 6.2 .6 1,247 
20165.7 5.0 6.3 6.6 7.0 6.9 .1 1,483 
20177.4 7.8 7.2 6.2 5.9 .7 1,489 
20188.7 9.0 7.3 7.1 .9 961 
20198.0 7.4 6.3 1.7 742 
20207.6 6.2 3.9 420 
202115.9 14.2 452 
Total$82.2 
Private Equity Funds and Hedge Funds
White Mountains invests in private equity funds and hedge funds, which are included in other long-term investments. The fair value of these investments is generally estimated using the NAV of the funds. As of December 31, 2023, White Mountains held investments in 16 private equity funds and two hedge funds.  The largest investment in a single private equity fund or hedge fund was $57.3 million and $49.0 million as of December 31, 2023 and December 31, 2022.
The following table presents the fair value of investments and unfunded commitments in private equity funds and hedge funds by investment objective and sector as of December 31, 2023 and 2022:
 December 31, 2023December 31, 2022
MillionsFair ValueUnfunded
Commitments
Fair ValueUnfunded
Commitments
Private equity funds    
Aerospace/Defense/Government$157.2 $17.4 $59.4 $37.5 
Financial services87.5 37.8 77.1 54.3 
Real estate3.9 2.5 4.1 2.5 
Total private equity funds248.6 57.7 140.6 94.3 
Hedge funds    
Long/short equity financials and business services54.4  49.0 — 
European small/mid cap9.9  8.2 — 
Total hedge funds64.3  57.2 — 
Total private equity funds and hedge funds
   included in other long-term investments
$312.9 $57.7 $197.8 $94.3 

Casualty - Active
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Accident Year2012201320142015201620172018201920202021
Unaudited
2012$1.3 $3.3 $4.8 $6.4 $7.4 $8.0 $8.5 $9.1 $8.9 $9.1 
20131.5 3.6 5.3 5.7 6.3 6.7 7.0 7.0 7.2 
20141.3 3.5 4.2 4.7 5.2 5.5 5.9 6.0 
20151.8 2.4 3.2 4.4 4.7 4.9 5.1 
2016.2 1.0 2.3 4.0 4.6 5.3 
2017.8 1.7 2.8 3.4 4.2 
2018.3 1.4 3.5 4.3 
2019.3 1.4 2.3 
2020.5 1.0 
2021.5 
Total45.0 
All outstanding liabilities before 2012, net of reinsurance.2 
Loss and LAE reserves, net of reinsurance$37.4 
Investments in private equity funds are generally subject to a lock-up period during which investors may not request a redemption. Distributions prior to the expected termination date of the fund may be limited to dividends or proceeds arising from the liquidation of the fund’s underlying investments. In addition, certain private equity funds have the option to extend the lock-up period.
The following table presents investments in private equity funds that were subject to lock-up periods as of December 31, 2023:
Millions1 – 3 years3 – 5 years5 – 10 years>10 yearsTotal
Private equity funds — expected lock-up period remaining$4.5 $71.0 $155.4 $17.7 $248.6 

Casualty - Active
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Unaudited
Years12345678910
9.1%14.7%18.5%14.2%9.6%10.7%3.9%3.1%1.0%3.1%
Investors in private equity funds are generally subject to indemnification obligations outside of the capital commitment period and prior to the winding up of the fund. As of December 31, 2023 and 2022, White Mountains is not aware of any indemnification claims relating to its investments in private equity funds. 
Redemption of investments in most hedge funds is subject to restrictions, including lock-up periods where no redemptions or withdrawals are allowed, restrictions on redemption frequency and advance notice periods for redemptions. Amounts requested for redemptions remain subject to market fluctuations until the redemption effective date, which generally falls at the end of the defined redemption period. Advance notice requirements for redemptions from White Mountains’s hedge fund investments range from 45 to 90 days. One of White Mountains’s hedge fund investments also limits redemptions to every second anniversary following the date of the initial investment.
Bank Loan Fund
White Mountains’s other long-term investments include a bank loan fund with a fair value of $194.4 million and $174.8 million as of December 31, 2023 and 2022. The fair value of this investment is estimated using the NAV of the fund. The bank loan fund’s investment objective is to provide, on an unleveraged basis, high current income consistent with preservation of capital and low duration. The bank loan fund primarily invests in a broad portfolio of U.S. dollar-denominated, non-investment grade, floating-rate senior secured loans and may invest in other financial instruments, such as secured and unsecured corporate debt, credit default swaps, reverse repurchase agreements, synthetic indices and cash and cash equivalents.
The investment in the bank loan fund is subject to restrictions on redemption frequency and advance notice periods for redemptions. Amounts requested for redemptions remain subject to market fluctuations until the redemption effective date, which generally falls at the end of the defined redemption period. White Mountains may redeem all or a portion of its bank loan fund investment as of any calendar month-end upon 15 calendar days advanced written notice.

F - 4528


Casualty - Runoff
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2021
Accident Year2012201320142015201620172018201920202021Total IBNR plus expected development on reported claimsCumulative number of reported claims
Unaudited
2012$44.3 $44.6 $37.8 $34.4 $22.3 $21.7 $22.3 $22.8 $22.7 $23.1 $(.2)1,430 
201365.7 75.8 70.1 49.2 47.0 49.8 49.8 49.8 49.9 3.1 1,810 
201446.9 67.5 46.8 46.0 55.9 55.6 56.0 55.0 1.9 1,932 
201526.9 23.9 26.4 35.7 33.0 33.2 32.0 1.4 2,009 
201619.1 25.3 38.8 35.4 35.3 34.1 3.8 2,141 
201717.4 27.2 26.7 28.0 26.7 2.5 1,597 
201813.5 18.2 20.2 20.0 2.9 1,265 
201910.8 14.3 15.4 3.7 961 
20204.2 6.0 3.6 552 
20211.7 .4 260 
Total263.9 
Lloyd’s Trust Deposits
White Mountains’s other long-term investments include Lloyd’s trust deposits, which consist of non-U.K. deposits and Canadian comingled pooled funds. The Lloyd’s trust deposits invest primarily in short-term government securities, agency securities and corporate bonds held in trusts that are managed by Lloyd's of London. These investments are generally required of Lloyd's syndicates to protect policyholders in non-U.K. markets and are pledged into Lloyd’s trust accounts to provide a portion of the capital needed to support obligations at Lloyd’s. The fair value of the Lloyd’s trust deposits is generally estimated using the NAV of the funds. As of December 31, 2023 and 2022, White Mountains held Lloyd’s trust deposits with a fair value of $158.0 million and $137.4 million.

Casualty - Runoff
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Accident Year2012201320142015201620172018201920202021
Unaudited
2012$3.5 $10.4 $13.6 $16.5 $17.8 $19.3 $20.5 $20.8 $21.2 $21.8 
20137.2 19.5 35.9 41.0 42.7 44.3 45.0 45.6 46.0 
20146.5 23.2 29.1 36.5 43.1 47.0 48.7 49.5 
20154.3 7.9 14.0 20.3 23.9 26.5 28.2 
20163.8 9.7 16.8 21.8 24.5 26.8 
20173.1 9.1 14.2 18.3 21.1 
20183.3 7.2 12.2 14.3 
20193.2 5.6 7.4 
2020.8 1.3 
2021.5 
Total216.9 
All outstanding liabilities before 2012, net of reinsurance21.4 
Loss and LAE reserves, net of reinsurance$68.4 
Insurance-Linked Securities Funds
White Mountains’s other long-term investments include ILS fund investments. The fair value of these investments is generally estimated using the NAV of the funds. As of December 31, 2023 and 2022, White Mountains held investments in ILS funds with a fair value of $160.5 million and $49.3 million.
Investments in ILS funds are generally subject to restrictions, including lock-up periods where no redemptions or withdrawals are allowed, non-renewal clauses, restrictions on redemption frequency and advance notice periods for redemptions. From time to time, natural catastrophe, liquidity, market or other events will occur that make the determination of fair value for underlying investments in ILS funds less certain due to the potential for loss development. In such circumstances, the impacted investments may be subject to additional lock-up provisions.
ILS funds are typically subject to monthly and annual restrictions on redemptions and advance redemption notice period requirements that range between 30 and 90 days. Amounts requested for redemption remain subject to market fluctuations until the redemption effective date, which is generally at the end of the defined redemption period or when the underlying investment has fully matured or been commuted.

Casualty - Runoff
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Unaudited
Years12345678910
9.4%15.3%17.0%15.9%9.7%8.1%7.0%3.6%2.5%1.7%
Rollforward of Level 3 Investments

Level 3 measurements as of December 31, 2023 and 2022 consist of securities for which the estimated fair value has not been determined based upon quoted market price inputs for identical or similar securities. The following table presents the changes in White Mountains’s fair value measurements for Level 3 investments for the years ended December 31, 2023 and 2022:

Level 3 Investments
MillionsOther Long-term
Investments
Other Long-term
Investments
Balance as of December 31, 2022$911.6 Balance as of December 31, 2021$890.6 
Net realized and unrealized gains157.3 Net realized and unrealized gains60.4 
Purchases and contributions256.6 Purchases and contributions129.8 
Sales and distributions(187.3)Sales and distributions(169.2)
Transfers in Transfers in— 
Transfers out Transfers out— 
Balance as of December 31, 2023$1,138.2 Balance as of December 31, 2022$911.6 

Fair Value Measurements — Transfers Between Levels - For Years Ended December 31, 2023 and 2022
Transfers between levels are recorded using the fair value measurement as of the end of the quarterly period in which the event or change in circumstance giving rise to the transfer occurred.
During 2023 and 2022, there were no fixed maturity investments or other long-term investments classified as Level 3 measurements in the prior period that were transferred to Level 2 measurements.
During 2023 and 2022, there were no fixed maturity investments or other long-term investments classified as Level 2 measurements in the prior period that were transferred to Level 3 measurements.



F - 4629


Significant Unobservable Inputs

The following tables present significant unobservable inputs used in estimating the fair value of White Mountains’s other long-term investments classified within Level 3 as of December 31, 2023 and 2022. The tables below exclude $19.0 million and $41.1 million of Level 3 other long-term investments generally valued based on recent or expected transaction prices. The fair value of investments in private equity funds and hedge funds, bank loan funds, Lloyd’s trust deposits and ILS funds are generally estimated using the NAV of the funds.

$ in MillionsDecember 31, 2023
Description
Valuation Technique(s) (1)
Fair Value (2)
Unobservable Inputs
Discount Rate (6)
Terminal Cash Flow Exit Multiple (x) or Terminal Revenue Growth Rate (%) (6)
Kudu’s Participation Contracts (3)(4)(5)
Discounted cash flow
$890.518% - 25%7x - 22x
PassportCard/DavidShieldDiscounted cash flow$150.024%4%
Elementum Holdings, L.P.Discounted cash flow$35.021%4%
Preferred securitiesDiscounted cash flow$28.28%N/A
Private debt instrumentsDiscounted cash flow$15.511% - 12%N/A
(1) Key inputs to the discounted cash flow analysis generally include projections of future revenue and earnings, discount rates and terminal exit multiples or growth rates.
(2) Includes the net unrealized investment gains (losses) associated with foreign currency; foreign currency effects based on observable inputs.
(3)Since Kudu’s Participation Contracts are not subject to corporate taxes within Kudu Investment Management, LLC, pre-tax discount rates are applied to pre-tax cash flows in determining fair values. The weighted average discount rate and weighted average terminal cash flow exit multiple applied to Kudu’s Participation Contracts was 20% and 13x.
(4) In 2023, Kudu deployed a total of $163.8 into new and existing Participation Contracts.
(5) As of December 31, 2023, one of Kudu’s Participation Contracts with a total fair value of $69.1 was valued using a probability weighted expected return method, which takes into account factors such as a discounted cash flow analysis, the expected value to be received in a pending sales transaction and the likelihood that a sales transaction will take place.
(6) Increases (decreases) to the discount rates in isolation would result in lower (higher) fair value measurements, while increases (decreases) to the terminal cash flow exit multiples or terminal revenue growth rates in isolation would result in higher (lower) fair value measurements.

$ in MillionsDecember 31, 2022
Description
Valuation Technique(s) (1)
Fair Value (2)
Unobservable Inputs
Discount Rate (6)
Terminal Cash Flow Exit Multiple (x) or Terminal Revenue Growth Rate (%) (6)
Kudu’s Participation Contracts (3)(4)(5)
Discounted cash flow$695.918% - 25%7x - 16x
PassportCard/DavidShieldDiscounted cash flow$135.024%4%
Elementum Holdings, L.P.Discounted cash flow$30.021%4%
Private debt instrumentsDiscounted cash flow$9.611%N/A
(1) Key inputs to the discounted cash flow analysis generally include projections of future revenue and earnings, discount rates and terminal exit multiples or growth rates.
(2) Includes the net unrealized investment gains (losses) associated with foreign currency; foreign currency effects based on observable inputs.
(3)Since Kudu’s Participation Contracts are not subject to corporate taxes within Kudu Investment Management, LLC, pre-tax discount rates are applied to pre-tax cash flows in determining fair values. The weighted average discount rate and weighted average terminal cash flow exit multiple applied to Kudu’s Participation Contracts is 21% and 12x.
(4) In 2022, Kudu deployed a total of $99.8 into new and existing Participation Contracts.
(5) As of December 31, 2022, two of Kudu’s Participation Contracts with a total fair value of $189.0 were valued using a probability weighted expected return method, which takes into account factors such as a discounted cash flow analysis, the expected value to be received in a pending sales transaction and the likelihood that a sales transaction will take place.
(6) Increases (decreases) to the discount rates in isolation would result in lower (higher) fair value measurements, while increases (decreases) to the terminal cash flow exit multiples or terminal revenue growth rates in isolation would result in higher (lower) fair value measurements.


F - 30


Note 6.  Third-Party Reinsurance4. Goodwill and Other Intangible Assets

InWhite Mountains accounts for business combinations using the normal course of business, Ark may seek to limit losses that may arise from catastrophes or other events by reinsuring certain risks with third-party reinsurers. Ark remains liable for risks reinsuredacquisition method. Under the acquisition method, White Mountains recognizes and measures the assets acquired, liabilities assumed and any noncontrolling interest in the event thatacquired entities at their acquisition date fair values. Goodwill represents the reinsurer doesexcess of the amount paid to acquire businesses over the fair value of identifiable net assets at the date of acquisition. The estimated acquisition date fair values, generally consisting of intangible assets and liabilities for contingent consideration, may be recorded at provisional amounts in circumstances where the information necessary to complete the acquisition accounting is not honor its obligations under reinsurance contracts. available at the reporting date. Any such provisional amounts are finalized as measurement period adjustments within one year of the acquisition date.
The following table summarizespresents the effectseconomic lives, acquisition date fair values, accumulated amortization and net carrying value for other intangible assets and goodwill as of reinsurance on writtenDecember 31, 2023 and earned premiums and on losses and LAE for Ark.2022:
Year Ended December 31, 2021
Millions
Written premiums:
Gross$1,058.7
Ceded(199.6)
Net written premiums$859.1
Earned premiums:
Gross$886.4
Ceded(249.1)
Net earned premiums$637.3
Losses and LAE:
Gross$442.9
Ceded(128.1)
Net Losses and LAE$314.8
$ in MillionsWeighted Average Economic
 Life
(in years)
December 31, 2023December 31, 2022
Acquisition Date Fair ValueAccumulated AmortizationNet Carrying ValueAcquisition Date Fair ValueAccumulated AmortizationNet Carrying Value
Goodwill:
ArkN/A$116.8 $ $116.8 $116.8 $— $116.8 
KuduN/A7.6  7.6 7.6 — 7.6 
Other OperationsN/A44.4  44.4 52.1 — 52.1 
Total goodwill168.8  168.8 176.5 — 176.5 
Other intangible assets:
Ark
Underwriting capacityN/A175.7  175.7 175.7 — 175.7 
Kudu
   Trade names7.02.2 1.5 .7 2.2 1.2 1.0 
Other Operations
   Trade names13.313.3 4.1 9.2 17.9 3.0 14.9 
Customer relationships10.924.8 10.3 14.5 29.5 7.5 22.0 
Other12.12.8 1.1 1.7 2.8 .5 2.3 
Subtotal40.9 15.5 25.4 50.2 11.0 39.2 
Total other intangible assets218.8 17.0 201.8 228.1 12.2 215.9 
Total goodwill and other intangible assets
$387.6 $17.0 370.6 $404.6 12.2 392.4 

As of December 31, 2021, Ark had $428.9 million and $19.5 million of reinsurance recoverables on unpaid and paid losses. As reinsurance contracts do not relieve Ark of its obligation to its policyholders, Ark seeks to reduce the credit risk associated with reinsurance balances by avoiding over-reliance on specific reinsurers through the application of concentration limits and thresholds. Ark is selective with its reinsurers, placing reinsurance with only those reinsurers having a strong financial condition. Ark monitors the financial strength of its reinsurers on an ongoing basis.
As of December 31, 2021, Ark’s reinsurance recoverables of $448.4 million included $276.8 million related to TPC Providers, which are collateralized. The following table provides a listing of Ark’s remaining gross and net reinsurance recoverables, excluding amounts related to TPC Providers, by the reinsurer’s A.M. Best Company, Inc. (“A.M. Best”) rating and the percentage of total recoverables.Intangible Assets Valuation Methods

$ in MillionsAs of December 31, 2021
A.M. Best Rating (1)
GrossCollateralNet% of Total
A+ or better$120.0 $16.9 $103.1 77.5 %
A- to A
41.513.128.421.3 
B++ or lower and not rated10.18.51.61.2 
Total$171.6 $38.5 $133.1 100.0 %
The goodwill recognized for the entities shown above is attributed to expected future cash flows. The acquisition date fair values of other intangible assets with finite lives are estimated using income approach techniques, which use future expected cash flows to develop a discounted present value amount.
The multi-period-excess-earnings method estimates fair value using the present value of the incremental after-tax cash flows attributable solely to the other intangible asset over its remaining life. This approach was used to estimate the fair value of other intangible assets associated with the underwriting capacity and customer relationships.
The relief-from-royalty method was used to estimate fair value for other intangible assets that relate to rights that could be obtained via a license from a third-party owner. Under this method, the fair value is estimated using the present value of license fees avoided by owning rather than leasing the asset. This technique was used to estimate the fair value of trade names, patents and certain information technology platforms.
The with-or-without method estimates the fair value of other intangible assets that provide an incremental benefit. Under this method, the fair value of the other intangible asset is calculated by comparing the value of the entity with and without the other intangible asset. This approach was used to estimate the fair value of non-compete agreements.
On at least an annual basis beginning no later than the interim period included in the one-year anniversary of an acquisition, White Mountains evaluates goodwill and other intangible assets for potential impairment. Between annual evaluations, White Mountains considers changes in circumstances or events subsequent to the most recent evaluation that may indicate that an impairment exists and, if necessary will perform an interim review for potential impairment.
During the year ended December 31, 2023 and 2022, White Mountains did not recognize any impairments to goodwill and other intangible assets.

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Rollforward of Goodwill and Other Intangible Asset

The following table presents the change in goodwill and other intangible assets:
December 31, 2023December 31, 2022
MillionsGoodwillOther Intangible AssetsTotal Goodwill and Other Intangible AssetsGoodwillOther Intangible AssetsTotal Goodwill and Other Intangible Assets
Beginning balance$176.5 $215.9 $392.4 $142.3 $198.2 $340.5 
Acquisition of businesses (1)
   59.5 — 59.5 
Disposition of businesses (2)
(6.7)(6.9)(13.6)   
Attribution of acquisition date fair value
   estimates between goodwill and other
   intangible assets
   (22.9)22.9 — 
Measurement period adjustments (3)
(1.0) (1.0)(2.4)— (2.4)
Amortization (7.2)(7.2)— (5.2)(5.2)
Ending balance$168.8 $201.8 $370.6 $176.5 $215.9 $392.4 
(1) Relates to acquisitions within Other Operations.
(2) Relates to a disposition within Other Operations.
(3) Measurement period adjustments relate to updated information about acquisition date fair values of assets acquired and liabilities assumed. Adjustments relate to acquisitions within Other Operations.

During the years ended December 31, 2023 and 2022, White Mountains did not recognize any impairments to goodwill and other intangible assets.

Amortization of Other Intangible Assets

Amortization expense was $7.2 million, $5.2 million and $4.6 million for the years ended December 31, 2023, 2022 and 2021.
White Mountains expects to recognize amortization expense in each of the next five years as presented in the following table:
MillionsAmortization Expense
2024$5.5 
20254.8 
20264.0 
20273.6 
2028 and years after8.2 
Total (1)
$26.1 
(1) A.M. Best ratings as detailed above are: “A+ or better” (Superior) “A- to A” (Excellent), “B++” (Good).Excludes Ark’s indefinite-lived intangible assets of $175.7.

See
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Note 10 — “Municipal Bond Guarantee Insurance” 5.  Loss and Loss Adjustment Expense Reserves

Ark establishes loss and LAE reserves that are estimates of amounts needed to pay claims and related expenses in the future for third-partyinsured events that have already occurred. Ark’s process of estimating reserves involves a considerable degree of judgment by management and, as of any given date, is inherently uncertain.
WM Outrigger Re entered into collateralized quota share agreements with GAIL to provide reinsurance balancesprotection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2023 underwriting year. WM Outrigger Re’s quota share reinsurance agreement with GAIL, including its loss and LAE reserves, eliminates in White Mountains’s consolidated financial statements.
HG Re and BAM do not have any outstanding loss and LAE reserves related to White Mountains’s financialBAM’s municipal bond guarantee business.
Loss and LAE reserves are typically comprised of case reserves for claims reported and reserves for losses that have occurred but for which claims have not yet been reported, referred to as IBNR reserves. IBNR reserves include a provision for expected future development on case reserves. Case reserves are estimated based on the experience and knowledge of claims staff regarding the nature and potential cost of each claim and are adjusted as additional information becomes known or payments are made. IBNR reserves are derived by subtracting paid loss and LAE and case reserves from estimates of ultimate loss and LAE. Actuaries estimate ultimate loss and LAE using various generally accepted actuarial methods applied to known losses and other relevant information. Like case reserves, IBNR reserves are adjusted as additional information becomes known or payments are made.
Losses and LAE are categorized by the year in which the policy is underwritten (the year of account, or underwriting year) for purposes of Ark’s claims management and estimation of the ultimate loss and LAE reserves. For purposes of Ark’s reporting under GAAP, losses and LAE are categorized by the year in which the claim is incurred (the accident year).
Ultimate loss and LAE are generally determined by extrapolation of claims emergence and settlement patterns observed in the past that can reasonably be expected to persist into the future. In forecasting ultimate loss and LAE for any line of business, past experience with respect to that line of business is the primary resource, but cannot be relied upon in isolation. Ark’s own experience, particularly claims development experience, such as trends in case reserves, payments on and closings of claims, as well as changes in business mix and coverage limits, is the most important information for estimating its reserves. External data, available from organizations such as the Lloyd’s Market Association, consulting firms and other insurance and reinsurance companies, is used to supplement or corroborate Ark’s own experience. External data can be especially useful for estimating costs on newer lines of business. Ultimate loss and LAE for major losses and catastrophes are estimated based on the known and expected exposures to the loss event, rather than simply relying on the extrapolation of reported and settled claims.
For some lines of business, such as long-tail coverages discussed below, claims data reported in the most recent years of account are often too limited to provide a meaningful basis for analysis due to the typical delay in reporting and settling of claims. For this type of business, Ark uses an expected loss ratio method for the initial years of account. This is a standard and accepted actuarial reserve estimation method in these circumstances in which the loss ratio is selected based upon information used in pricing policies for that line of business, as well as any publicly available industry data, such as industry pricing, experience and trends.
Uncertainties in estimating ultimate loss and LAE are magnified by the time lag between when a claim actually occurs and when it is reported and eventually settled. This time lag is sometimes referred to as the “claim-tail”. The claim-tail for reinsurance and insurance obtained through brokers, MGAs and reinsurance intermediaries (collectively, the “insurance and reinsurance intermediaries”) is further extended because claims are first reported to either the original primary insurance company or the insurance and reinsurance intermediaries. The claim-tail for most property coverages is typically short (usually a few days up to a few months). Settlements for casualty/liability coverages can extend for long periods of time as claims are often reported and ultimately paid or settled years after the related loss events occur. During the long claims reporting and settlement period, additional facts regarding coverages written in prior years of account, as well as about actual claims and trends, may become known and, as a result, Ark may adjust its reserves. The inherent uncertainties of estimating reserves are increased by the diversity of loss development patterns among different types of reinsurance treaties, facultative contracts or direct insurance contracts, the necessary reliance on the ceding companies and insurance and reinsurance intermediaries for information regarding reported claims and the differing reserving practices among ceding companies and insurance and reinsurance intermediaries.
If management determines that an adjustment is appropriate, the adjustment is booked in the accounting period in which such determination is made. Accordingly, should reserves need to be increased or decreased in the future from amounts currently established, future results of operations would be negatively or positively impacted.
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In determining ultimate loss and LAE, the cost to indemnify claimants, provide needed legal defense and other services for insureds and administer the investigation and adjustment of claims are considered. These claims costs are influenced by many factors that change over time, such as expanded coverage definitions as a result of new court decisions, inflation in costs to repair or replace damaged property, inflation in the cost of medical services, and legislated changes in statutory benefits, as well as by the unique facts that pertain to each claim. As a result, the rate at which claims arose in the past and the costs to settle them may not always be representative of what will occur in the future. The factors influencing changes in claims costs are often difficult to isolate or quantify and developments in paid and incurred losses from historical trends are frequently subject to multiple and conflicting interpretations. Changes in coverage terms or claims handling practices may also cause future experience and/or development patterns to vary from the past. A key objective of actuaries in developing estimates of ultimate loss and LAE and resulting IBNR reserves is to identify aberrations and systemic changes occurring within historical experience and accurately adjust for them so that the future can be projected more reliably. Because of the factors previously discussed, this process requires the use of informed judgment and is inherently uncertain.
Ark performs an actuarial review of its recorded loss and LAE reserves each quarter, using several generally accepted actuarial methods to evaluate its loss reserves, each of which has its own strengths and weaknesses. Management places more or less reliance on a particular method based on the facts and circumstances at the time the reserve estimates are made. These methods generally fall into one of the following categories or are hybrids of one or more of the following categories:

Historical paid loss development methods: These methods use historical loss payments over discrete periods of time to estimate future losses. Historical paid loss development methods assume that the ratio of losses paid in one period to losses paid in an earlier period will remain constant. These methods necessarily assume that factors that have affected paid losses in the past, such as inflation or the effects of litigation, will remain constant in the future. Because historical paid loss development methods do not use case reserves to estimate ultimate losses, they can be more reliable than the other methods discussed below that look to case reserves (such as actuarial methods that use incurred losses) in situations where there are significant changes in how case reserves are established by a company’s claims adjusters. However, historical paid loss development methods are more leveraged, meaning that small changes in payments have a larger impact on estimates of ultimate losses, than actuarial methods that use incurred losses because cumulative loss payments take much longer to approach the expected ultimate losses than cumulative incurred amounts. In addition, and for similar reasons, historical paid loss development methods are often slow to react to situations when new or different factors arise than those that have affected paid losses in the past.

Historical incurred loss development methods: These methods, like historical paid loss development methods, assume that the ratio of losses in one period to losses in an earlier period will remain constant in the future. However, instead of using paid losses, these methods use incurred losses (i.e., the sum of cumulative historical loss payments plus outstanding case reserves) over discrete periods of time to estimate future losses. Historical incurred loss development methods can be preferable to historical paid loss development methods because they explicitly take into account open cases and the claims adjusters’ evaluations of the cost to settle all known claims. However, historical incurred loss development methods necessarily assume that case reserving practices are consistently applied over time. Therefore, when there have been significant changes in how case reserves are established, using incurred loss data to project ultimate losses can be less reliable than other methods.

Expected loss ratio methods: These methods are based on the assumption that ultimate losses vary proportionately with premiums. Expected loss ratios are typically developed based upon the information used in pricing and are multiplied by the total amount of premiums earned to calculate ultimate losses. Expected loss ratio methods are useful for estimating ultimate losses in the early years of long-tail lines of business, when little or no paid or incurred loss information is available.

Bornhuetter-Ferguson methods: These methods are a blend of the expected loss ratio and loss development methods. The percent of incurred (or paid) loss to ultimate loss implied by the selected development pattern from the incurred (or paid) loss development method is used to determine the percentage of ultimate loss yet to be developed. Inception to date losses are added to losses yet to be developed, yielding an estimate of ultimate for each year of account.

Adjusted historical paid and incurred loss development methods: These methods take traditional historical paid and incurred loss development methods and adjust them for the estimated impact of changes from the past in factors such as inflation, the speed of claims payment or the adequacy of case reserves. Adjusted historical paid and incurred loss development methods are often more reliable methods of predicting ultimate losses in periods of significant change, provided the actuaries can develop methods to reasonably quantify the impact of changes.

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As part of Ark’s quarterly actuarial review, Ark compares the previous quarter’s projections of incurred, paid and case reserve activity, including amounts incurred but not reported, to actual amounts experienced in the quarter. Differences between previous estimates and actual experience are evaluated to determine whether a given actuarial method for estimating loss and LAE reserves should be relied upon to a greater or lesser extent than it has been in the past. While some variance is expected each quarter due to the inherent uncertainty in estimating loss and LAE reserves, persistent or large variances would indicate that prior assumptions and/or reliance on certain actuarial methods may need to be revised going forward.
Upon completion of each quarterly review, Ark selects indicated loss and LAE reserve levels based on the results of the actuarial methods described previously, which are the primary consideration in determining management's best estimate of required loss and LAE reserves. However, in making its best estimate, management also considers other qualitative factors that may lead to a difference between held reserves and the actuarial central estimate of reserves. Typically, these qualitative factors are considered when management and Ark’s actuaries conclude that there is insufficient historical incurred and paid loss information or that trends included in the historical incurred and paid loss information are not likely to repeat in the future. Such qualitative factors include, among others, recent entry into new markets or new products, improvements in the claims department that are expected to lessen future ultimate loss costs, legal and regulatory developments or other uncertainties that may arise.

Reinsurance Contracts Accounted for as Deposits
Reinsurance contracts that do not meet the risk transfer requirements necessary to be accounted for as reinsurance are accounted for using the deposit method. Under the deposit method, ceded premiums paid are not recognized through income but rather treated as a deposit.
BAM entered into three ceded reinsurance agreements with Fidus Re Ltd. (“Fidus Re”), a Bermuda-based special purpose insurer created in 2018 solely to provide reinsurance protection to BAM. BAM also entered into an excess of loss reinsurance agreement (the “XOLT”) with HG Re. The financing expenses paid by BAM under these reinsurance agreements are recorded in general and administrative expenses. See Note 10 — “Municipal Bond Guarantee Insurance”.
Ark has an aggregate excess of loss contract with SiriusPoint Ltd. (“SiriusPoint”), formerly Third Point Reinsurance Ltd., which is accounted for using the deposit method and recorded within other assets. Ark earns an annual crediting rate of 3.0%, which is recorded within other revenue. See Note 6 — “Third-Party Reinsurance”.

Revenue Recognition
Kudu’s revenues are primarily generated from Participation Contracts, which are noncontrolling equity interests in revenue and earnings participation contracts with asset and wealth management firms. Kudu’s Participation Contracts are measured at fair value with the change therein recognized within net realized and unrealized investment gains (losses). Distributions from Kudu’s clients are recognized through investment income when Kudu’s right to receive payment has been established and can be reliably measured, which generally occurs on a quarterly basis in accordance with the terms of the Participation Contracts.
White Mountains’s Other Operations recognizes agent commissions and other revenues when it has satisfied its performance obligations. Deferred revenues associated with unsatisfied performance obligations are recognized within other liabilities.

Cost of Sales
White Mountains’s Other Operations’ cost of sales consists of salaries and related expenses, professional services and marketing and advertising expenses directly related to sales generation. These expenses are recognized as incurred.
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Goodwill and Other Intangible Assets
Goodwill represents the excess of the amount paid to acquire subsidiaries over the fair value of identifiable net assets at the date of acquisition. Other intangible assets consist primarily of underwriting capacity, customer relationships and trade names.
Goodwill and other intangible assets with indefinite lives are not amortized, but rather are evaluated for impairment on an annual basis, or whenever indications of potential impairment exist. In the absence of any indications of potential impairment, the evaluation of goodwill and indefinite-lived intangible assets is performed no later than the interim period in which the anniversary of the acquisition date falls. White Mountains initially evaluates goodwill using a qualitative approach (step zero) to determine whether it is more likely than not that the implied fair value of goodwill is greater than its carrying value. If White Mountains determines, based on this qualitative review, that it is more likely than not that an impairment may exist, then White Mountains performs a quantitative analysis to compare the fair value of a reporting unit with its carrying value. If the carrying value exceeds the estimated fair value, then an impairment charge is recognized through current period pre-tax income (loss).
Other intangible assets with finite lives are initially measured at their acquisition date fair values and subsequently amortized over their economic lives. Other intangible assets with finite lives are presented net of accumulated amortization on the balance sheet. Other intangible assets with finite lives are reviewed for impairment when events occur or there are changes in circumstances indicating that their carrying value may exceed fair value. Impairment exists when the carrying value of other intangible assets exceeds fair value. See Note 4 — “Goodwill and Other Intangible Assets”.
Incentive Compensation
White Mountains’s Long-Term Incentive Plan (the “WTM Incentive Plan”) provides for grants of various types of share-based and non-share-based incentive awards to key employees of White Mountains. Non-share-based awards are recognized over the related service periods based on management’s best estimate of the amounts at which the awards are expected to be paid. Share-based compensation which is typically settled in cash, such as performance shares, is classified as a liability-type award. The compensation cost for liability-classified awards is measured initially at the grant date fair value and remeasured each reporting period until settlement. The compensation cost for equity-classified awards expected to be settled in shares, such as options and restricted shares, is measured at the original grant date fair value of the award. The compensation cost for all awards is recognized for the vested portion of the awards over the related service periods. See Note 12 — “Employee Share-Based Incentive Compensation Plans”.

Income Taxes
White Mountains has subsidiaries and branches that operate in various jurisdictions around the world and are subject to tax in the jurisdictions in which they operate.  As of December 31, 2023, the primary jurisdictions in which the Company’s subsidiaries and branches operate and were subject to tax include Israel, Luxembourg, the United Kingdom and the United States. Income earned or losses generated by companies outside the United States are generally subject to an overall effective tax rate lower than that imposed by the United States.
Deferred tax assets and liabilities are recorded when a difference between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts for tax purposes exists, and for other temporary differences. The deferred tax asset or liability is recorded based on tax rates expected to be in effect when the difference reverses. Deferred tax assets represent amounts available to reduce income taxes payable in future periods. White Mountains records a valuation allowance against deferred tax assets if it becomes more likely than not that all or a portion of a deferred tax asset will not be realized. Changes in valuation allowances from period to period are included in income tax expense in the period of change. See Note 8 — “Income Taxes”.

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Leases
White Mountains has entered into lease agreements, primarily for office space and equipment. These leases are classified as operating leases, with lease expense recognized on a straight-line basis over the term of the lease. Lease assets and liabilities are not recorded for leases with a term at inception of one year or less. Lease incentives, such as free rent or landlord reimbursements for leasehold improvements, are recognized at lease inception and amortized on a straight-line basis over the term of the lease. Lease expense and the amortization of leasehold improvements are recognized within general and administrative expenses. Lease payments related to options to extend or renew the lease term are excluded from the calculation of lease liabilities unless White Mountains is reasonably certain of exercising those options.
As of December 31, 2023 and 2022, the right-of-use (“ROU”) assets were $20.3 million and $25.2 million, and the lease liabilities were $22.0 million and $27.1 million.

Noncontrolling Interests
Noncontrolling interests consist of the ownership interests of noncontrolling shareholders in consolidated subsidiaries and are presented separately on the balance sheet. The portion of comprehensive income (loss) attributable to noncontrolling interests is presented net of related income taxes in the statement of operations and comprehensive income (loss). See Note 13 — “Common Shareholders’ Equity and Noncontrolling Interests”.

Foreign Currency Exchange
The functional currencies for White Mountains’s non-U.S. based subsidiaries are measured, in most instances, using currencies other than the U.S. dollar. Net foreign exchange gains and losses arising from the translation of functional currencies are generally reported in shareholders’ equity, in accumulated other comprehensive income (loss).
White Mountains also invests in securities denominated in foreign currencies. Assets and liabilities recorded in these foreign currencies are translated into U.S. dollars at exchange rates in effect at the balance sheet date, and revenues and expenses are converted using the weighted average exchange rates for the period.
As of December 31, 2023 and 2022, White Mountains had unrealized foreign currency translation losses of $1.6 million and $3.5 million recorded in accumulated other comprehensive income (loss) on its consolidated balance sheet.

Fair Value Measurements
Fair value measurements are categorized into a hierarchy that distinguishes between inputs based on market data from independent sources (observable inputs) and a reporting entity’s internal assumptions based upon the best information available when external market data is limited or unavailable (unobservable inputs). Quoted prices in active markets for identical assets or liabilities have the highest priority (Level 1), followed by observable inputs other than quoted prices, including prices for similar but not identical assets or liabilities (Level 2), and unobservable inputs, including the reporting entity’s estimates of the assumptions that market participants would use, having the lowest priority (Level 3). See Note 18 — “Fair Value of Financial Instruments”.

Business Combinations
White Mountains accounts for purchases of businesses using the acquisition method, which requires the measurement of assets acquired, including other intangible assets, and liabilities assumed, including contingent liabilities, at their estimated fair values as of the acquisition date. The acquisition date fair values represent management’s best estimates and are based upon established valuation techniques, reasonable assumptions and, where appropriate, valuations performed by independent third parties. In circumstances where additional information is required in order to determine the acquisition date fair value of balance sheet amounts, provisional amounts may be recorded as of the acquisition date and may be subject to subsequent adjustment throughout the measurement period, which is up to one year from the acquisition date. Measurement period adjustments are recognized in the period in which they are determined. The results of operations and cash flows of businesses acquired are included in the consolidated financial statements from the date of acquisition. White Mountains accounts for purchases of other intangible assets that do not meet the definition of a business as asset acquisitions. Asset acquisitions are recognized at the amount of consideration paid, which is deemed to equal fair value.

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Note 2. Significant Transactions

Bamboo Transaction

On October 19, 2023, White Mountains entered into an agreement and plan of merger (the “Bamboo Merger Agreement”) with Bamboo Ide8 Insurance Services LLC (“Bamboo MGA”) and John Chu, as the unitholders’ representative. Under the terms of the Bamboo Merger Agreement, White Mountains’s wholly-owned subsidiary, WM Pierce Merger Sub LLC, agreed to merge with and into Bamboo MGA, with Bamboo MGA continuing as the surviving company (the “Bamboo Merger”). Concurrently with the execution of the Bamboo Merger Agreement, certain Bamboo management unitholders agreed to rollover the majority of their existing equity in Bamboo MGA into PM Holdings LLC (“Bamboo Holdings”) (collectively with Bamboo MGA and Ide8 Limited (“Bamboo Captive”), “Bamboo”). White Mountains also agreed to make an equity contribution to Bamboo immediately following the Bamboo Merger (together with the Bamboo Merger and the rollover transactions, the “Bamboo Transaction”).
On January 2, 2024, White Mountains closed the Bamboo Transaction in accordance with the terms of the Bamboo Merger Agreement, investing $296.7 million in equity into Bamboo, which included the contribution of $36.0 million to retire Bamboo’s legacy credit facility and the contribution of $20.0 million of primary capital. The consideration is subject to customary purchase price adjustments. At closing, White Mountains owned 72.8% of Bamboo on a basic shares outstanding basis (63.7% on a fully-diluted/fully-converted basis, taking account of management’s equity incentives). At closing, 16.1% of basic shares outstanding are owned by Bamboo management (26.6% on a fully-diluted/fully-converted basis).
Bamboo is a capital-light, tech- and data-enabled insurance distribution platform providing homeowners’ insurance and related products to the residential property market in California. Bamboo operates primarily through Bamboo MGA, its full-service MGA business, where the company manages all aspects of the placement process on behalf of its fronting and reinsurance partners, including product development, marketing, underwriting, policy issuance and claims oversight, and it earns commissions based on the volume and profitability of the insurance that it places. It offers both admitted and non-admitted insurance products. Bamboo also operates two separate but integrated business models: (i) a retail agency, within Bamboo MGA, offering ancillary products (e.g., flood, earthquake) on behalf of third parties and (ii) Bamboo Captive, a Bermuda-domiciled captive reinsurer that participates in the underwriting risk of Bamboo’s MGA programs to align interests with reinsurance partners. Bamboo will be consolidated and presented as a reportable segment for periods after December 31, 2023.

NSM

On August 1, 2022, the NSM Transaction closed. White Mountains received $1.4 billion in net cash proceeds at closing and recognized a net transaction gain of $875.7 million, which was comprised of $886.8 million of net gain from sale of discontinued operations and $2.9 million of comprehensive income related to the recognition of foreign currency translation gains (losses) from the sale, partially offset by $14.0 million of compensation and other costs related to the transaction recorded in Other Operations.
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WM Outrigger Re

During the fourth quarter of 2022, Ark sponsored the formation of Outrigger Re Ltd., a Bermuda company registered as a special purpose insurer and segregated accounts company, to provide reinsurance capacity to Ark. On December 20, 2022, Outrigger Re Ltd. issued $250 million of non-voting redeemable preference shares on behalf of four segregated accounts to White Mountains and unrelated third-party investors. Upon issuance of the preference shares, Outrigger Re Ltd. entered into collateralized quota share agreements with GAIL to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2023 underwriting year. The proceeds from the issuance of the preference shares were deposited into collateral trust accounts to fund any potential obligations under the reinsurance agreements with GAIL. Outrigger Re Ltd.’s obligations under the reinsurance agreements with GAIL are subject to an aggregate limit equal to the assets in the collateral trusts. The terms of the reinsurance agreements are renewable upon the mutual agreement of Ark and the applicable preference shareholder of Outrigger Re Ltd.
During the fourth quarter of 2022, White Mountains purchased 100% of the preference shares linked to its segregated account, WM Outrigger Re, for $205.0 million. White Mountains consolidates WM Outrigger Re’s results in its financial statements. WM Outrigger Re’s quota share reinsurance agreement with GAIL eliminates in White Mountains’s consolidated financial statements.
During the fourth quarter of 2023, Ark renewed Outrigger Re Ltd. to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2024 underwriting year. Outrigger Re Ltd. was capitalized with $250.0 million for business written in the 2024 underwriting year, of which White Mountains rolled over $130.0 million from its commitment to the 2023 underwriting year. The remaining capital was provided by new and continuing unrelated third-party investors.
As of December 31, 2023 and 2022, short-term investments of $265.3 million and $203.7 million were held in a collateral trust, after expenses of $1.3 million.
During January 2024, White Mountains received an initial return of capital of $68.1 million from WM Outrigger Re for business written in the 2023 underwriting year. White Mountains expects to receive any additional return of capital and associated profits from business written in the 2023 underwriting year beginning in the second quarter of 2024.

Ark

On October 1, 2020, White Mountains entered into a subscription and purchase agreement (the “Ark SPA”) with Ark and certain selling shareholders (collectively with Ark, the “Ark Sellers”). Under the terms of the Ark SPA, White Mountains agreed to contribute $605.4 million of equity capital to Ark, at a pre-money valuation of $300.0 million, and to purchase $40.9 million of shares from the Ark Sellers. White Mountains also agreed to contribute up to an additional $200.0 million of equity capital to Ark in 2021. In accordance with the Ark SPA, in the fourth quarter of 2020 White Mountains pre-funded/placed in escrow a total of $646.3 million in preparation for closing the transaction, including $280.0 million funded directly to Lloyd’s on behalf of Ark under the terms of a credit facility agreement and $366.3 million placed in escrow, which is reflected on the balance sheet within Other Operations as of December 31, 2020.
On January 1, 2021, White Mountains completed the Ark Transaction in accordance with the terms of the Ark SPA. As of December 31, 2021, White Mountains owned 72.0% of Ark on a basic shares outstanding basis (63.0% after taking account of management’s equity incentives). The remaining shares are owned by employees. In the future, management rollover shareholders could earn additional shares in Ark if and to the extent that White Mountains achieves certain thresholds for its multiple of invested capital return. If fully earned, these additional shares would represent 12.5% of the shares outstanding at closing.
White Mountains recognized total assets acquired related to the Ark Transaction of $2.5 billion, including goodwill and other intangible assets of $292.5 million, and total liabilities of $1.7 billion, including contingent consideration of $22.5 million and noncontrolling interest of $220.2 million. Ark incurred transaction costs of $25.3 million in the first quarter of 2021.
In the third quarter of 2021, Ark issued $163.3 million of floating rate unsecured subordinated notes (the “Ark 2021 Subordinated Notes”) in three separate transactions. See Note 7 — “Debt”. In connection with the issuance of the Ark 2021 Subordinated Notes, White Mountains and Ark terminated White Mountains’s commitment to provide up to $200.0 million of additional equity capital to Ark in 2021.
F - 18


The following presents additional details of the assets acquired and liabilities assumed as of the January 1, 2021 acquisition date:
MillionsAs of January 1, 2021
Investments$594.3
Cash52.0(1)
Reinsurance recoverables433.4
Insurance premiums receivable236.7
Ceded unearned premiums170.2
Value of in-force business acquired71.7
Other assets88.9
Loss and loss adjustment expense reserves(696.0)
Unearned insurance premiums(326.1)
Debt(46.4)
Ceded reinsurance payable(528.3)
Other liabilities(25.9)
   Net tangible assets acquired24.5
Goodwill116.8
Other intangible assets - syndicate underwriting capacity175.7
Deferred tax liability on other intangible assets(33.4)
  Net assets acquired$283.6
(1) Cash excludes the White Mountains cash contribution of $605.4 as part of the Ark Transaction.

The values of net tangible assets acquired and the resulting goodwill, other intangible assets and contingent consideration were recorded at fair value using Level 3 inputs. The majority of the tangible assets acquired and liabilities assumed were recorded at their carrying values, as their carrying values approximated their fair values due to their short-term nature. The fair values of other intangible assets and the contingent consideration liability were estimated primarily based on the income approach. The income approach estimates fair value based on the present value of the cash flows that the assets are expected to generate in the future. White Mountains developed internal estimates for the expected future cash flows and discount rates used in the present value calculations.
The value of in-force business acquired represents the estimated profits relating to the unexpired contracts, net of related prepaid reinsurance, at the acquisition date through the expiration date of the contracts. During the years ended December 31, 2023, 2022 and 2021, Ark recognized $0.0 million, $7.5 million and $64.2 million of amortization expense on the value of in-force business acquired. The value of the syndicate underwriting capacity intangible asset was estimated using net cash flows attributable to Ark’s rights to write business in the Lloyd’s market. The value of the in-force business acquired and the syndicate underwriting capacity were estimated using a discounted cash flow method. Significant inputs to the valuation models include estimates of growth in premium revenues, investment returns, claims costs, expenses and discount rates based on a weighted average cost of capital.
In evaluating the fair value of Ark’s loss and loss adjustment expense reserves, White Mountains determined that the risk-free rate of interest was approximately equal to the risk factor reflecting the uncertainty within the reserves, and thus no adjustment was necessary. During the years ended December 31, 2023, 2022 and 2021, Ark recognized pre-tax expense of $48.7 million, $17.3 million and $5.5 million for the change in the fair value of its contingent consideration liabilities. Any future adjustments to contingent consideration liabilities will be recognized through pre-tax income (loss). As of December 31, 2023 and 2022, Ark recognized total contingent consideration liabilities of $94.0 million and $45.3 million.
Ark’s segment income and expenses for 2023, 2022 and 2021 are presented in Note 15 — “Segment Information.”


F - 19


Kudu

On May 26, 2022, Kudu raised $114.5 million of equity capital (the “Kudu Transaction”) from Massachusetts Mutual Life Insurance Company (“Mass Mutual”), White Mountains and Kudu management. Mass Mutual, White Mountains and Kudu management contributed $64.1 million, $50.0 million and $0.4 million at a pre-money valuation of 1.3x book value, or $114.0 million, above the December 31, 2021 equity value of Kudu’s go-forward portfolio of Participation Contracts. The go-forward portfolio of Kudu’s Participation Contracts excluded $54.3 million of enterprise value as of December 31, 2021 relating to two portfolio companies that had announced sale transactions prior to the capital raise. As a result of the Kudu Transaction, White Mountains’s basic ownership of Kudu decreased from 99.1% to 89.3%.

Note 3. Investment Securities

White Mountains’s portfolio of investment securities held for general investment purposes consists of fixed maturity investments, short-term investments, common equity securities, its investment in MediaAlpha and other long-term investments.White Mountains’s portfolio of fixed maturity investments, including those within short-term investments, are classified as trading securities. Trading securities are reported at fair value as of the balance sheet date. Short-term investments also include interest-bearing money market funds and certificates of deposit that are carried at fair value. White Mountains’s portfolio of common equity securities, its investment in MediaAlpha and other long-term investments are measured at fair value.Other long-term investments consist primarily of unconsolidated entities, Kudu’s Participation Contracts, private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits, ILS funds and private debt instruments.White Mountains has taken the fair value option for its equity method eligible investments. See Note 16 — Equity Method Eligible Investments”. Net realized and unrealized investment gains (losses) are reported in pre-tax revenues.

Net Investment Income

White Mountains’s net investment income is comprised primarily of interest income associated with White Mountains’s fixed maturity investments and short-term investments, dividend income from common equity securities and distributions from other long-term investments.
The following table presents pre-tax net investment income for the years ended December 31, 2023, 2022 and 2021:

Year Ended December 31,
Millions202320222021
Fixed maturity investments$64.4 $41.4 $28.8 
Short-term investments52.0 16.4 .6 
Common equity securities4.1 1.6 .1 
Other long-term investments76.1 68.1 56.3 
Amount attributable to TPC Providers (1.0)(1.0)
Total investment income196.6 126.5 84.8 
Third-party investment expenses(2.4)(2.1)(2.3)
Net investment income, pre-tax$194.2 $124.4 $82.5 

F - 20


Net Realized and Unrealized Investment Gains (Losses)

The following table presents net realized and unrealized investment gains (losses) for the years ended December 31, 2023, 2022 and 2021:

Year Ended December 31,
Millions202320222021
Realized investment gains (losses)
Fixed maturity investments$(4.7)$(11.9)$3.9 
Short-term investments(.2)(1.4)(.1)
Common equity securities29.5 — .4 
Investment in MediaAlpha — 160.3 
Other long-term investments72.2 128.4 (7.7)
Net realized investment gains (losses)96.8 115.1 156.8 
Unrealized investment gains (losses)
Fixed maturity investments66.1 (168.4)(42.2)
Short-term investments1.9 (1.1)— 
Common equity securities47.1 (7.1)14.9 
Investment in MediaAlpha27.1 (93.0)(540.6)
Other long-term investments195.2 (43.8)172.7 
Net unrealized investment gains (losses)337.4 (313.4)(395.2)
Net realized and unrealized investment gains (losses), before
   amount attributable to TPC providers (1)
434.2 (198.3)(238.4)
Amount attributable to TPC Providers 6.8 (7.7)
Net realized and unrealized investment gains (losses)
$434.2 $(191.5)$(246.1)
Fixed maturity and short-term investments
   Net realized and unrealized investment gains (losses)$63.1 $(182.8)$(38.4)
Less: net realized and unrealized gains (losses) on investment
   securities sold during the period
4.7 (2.9)(8.4)
Net unrealized investment gains (losses) recognized during the
   period on investment securities held at the end of the period
$58.4 $(179.9)$(30.0)
Common equity securities and investment in MediaAlpha
Net realized and unrealized investment gains (losses) on
   common equity securities
$76.6 $(7.1)$15.3 
Net realized and unrealized investment gains (losses) from
   investment in MediaAlpha
27.1 (93.0)(380.3)
Total net realized and unrealized investment gains (losses)103.7 (100.1)(365.0)
Less: net realized and unrealized gains (losses) on investment
   securities sold during the period
28.4 — 20.3 
Net unrealized investment gains (losses) recognized during the
   period on investment securities held at the end of the period
$75.3 $(100.1)$(385.3)
(1) For 2023, 2022 and 2021, includes $13.6, $(29.3) and $(7.7) of net realized and unrealized investment gains (losses) related to foreign currency exchange.

For the years ended December 31, 2023, 2022 and 2021, all of White Mountains’s net realized and unrealized investment gains (losses) were recorded in the consolidated statements of operations. There were no investment gains (losses) recorded in other comprehensive income.
White Mountains recognized gross realized investment gains of $113.7 million, $129.9 million and $212.3 million and gross realized investment losses of $16.9 million, $14.8 million and $55.5 million on sales of investment securities for the years ending December 31, 2023, 2022 and 2021.
F - 21


The following table presents total net unrealized gains (losses) attributable to Level 3 investments for the years ended December 31, 2023, 2022 and 2021 for investments still held at the end of the period:
Year Ended December 31,
Millions202320222021
Total net unrealized investment gains on other long-term investments held at
   the end of period, pre-tax
$133.9 $56.5 $98.9 

Proceeds from the sales and maturities of investments, excluding short-term investments, totaled $0.8 billion, $0.5 billion and $0.8 billion for the years ended December 31, 2023, 2022 and 2021.

Investment Holdings

The following tables present the cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses) and carrying value of White Mountains’s fixed maturity investments as of December 31, 2023 and 2022:
December 31, 2023
MillionsCost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Net Foreign
Currency
Gains (Losses)
Carrying
Value
U.S. Government and agency obligations$209.0 $.3 $(4.4)$ $204.9 
Debt securities issued by corporations1,085.9 5.6 (45.4)(1.1)1,045.0 
Municipal obligations275.1 .9 (15.1) 260.9 
Mortgage and asset-backed securities417.2 2.0 (29.8) 389.4 
Collateralized loan obligations211.2 .4 (2.4)(.1)209.1 
Total fixed maturity investments$2,198.4 $9.2 $(97.1)$(1.2)$2,109.3 

December 31, 2022
MillionsCost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Net Foreign
Currency
Gains (Losses)
Carrying
Value
U.S. Government and agency obligations$216.6 $— $(10.2)$— $206.4 
Debt securities issued by corporations1,098.3 .6 (78.3)(1.8)1,018.8 
Municipal obligations281.6 .4 (23.4)— 258.6 
Mortgage and asset-backed securities288.7 — (34.5)— 254.2 
Collateralized loan obligations190.8 .1 (6.0)(2.0)182.9 
Total fixed maturity investments$2,076.0 $1.1 $(152.4)$(3.8)$1,920.9 


F - 22


The weighted average duration of White Mountains’s fixed income portfolio was 1.9 years, including short-term investments, and 3.3 years, excluding short-term investments, as of December 31, 2023.
The following table presents the cost or amortized cost and carrying value of White Mountains’s fixed maturity investments by contractual maturity as of December 31, 2023. Actual maturities could differ from contractual maturities because borrowers may have the right to call or prepay certain obligations with or without call or prepayment penalties.
December 31, 2023
MillionsCost or Amortized CostCarrying Value
Due in one year or less$319.9 $315.0 
Due after one year through five years845.0 813.9 
Due after five years through ten years303.4 287.0 
Due after ten years101.7 94.9 
Mortgage and asset-backed securities and
   collateralized loan obligations
628.4 598.5 
Total fixed maturity investments$2,198.4 $2,109.3 

The following tables present the cost or amortized cost, gross unrealized investment gains (losses), net foreign currency gains (losses) and carrying value of common equity securities, White Mountains’s investment in MediaAlpha and other long-term investments as of December 31, 2023 and 2022:
December 31, 2023
MillionsCost or
Amortized Cost
Gross Unrealized
Gains
Gross Unrealized LossesNet Foreign
Currency Gains (Losses)
Carrying
Value
Common equity securities$483.5 $62.3 $(1.2)$(6.2)$538.4 
Investment in MediaAlpha
$59.2 $195.7 $ $ $254.9 
Other long-term investments$1,655.7 $446.3 $(94.5)$(9.3)$1,998.2 

December 31, 2022
MillionsCost or
Amortized Cost
Gross Unrealized
Gains
Gross Unrealized LossesNet Foreign
Currency Gains (Losses)
Carrying
Value
Common equity securities$660.6 $26.7 $(8.4)$(10.5)$668.4 
Investment in MediaAlpha
$— $168.6 $— $— $168.6 
Other long-term investments$1,340.8 $271.1 $(107.1)$(16.8)$1,488.0 


F - 23


Fair Value Measurements by Level
The following tables present White Mountains’s fair value measurements for investments as of December 31, 2023 and 2022 by level. See Note 1 — “Basis of Presentation and Significant Accounting Policies”. The major security types were based on the legal form of the securities. White Mountains has disaggregated its fixed maturity investments based on the issuing entity type, which impacts credit quality, with debt securities issued by U.S. government entities carrying minimal credit risk, while the credit and other risks associated with other issuers, such as corporations, municipalities or entities issuing mortgage and asset-backed securities vary depending on the nature of the issuing entity type. White Mountains further disaggregates debt securities issued by corporations by industry sector because investors often reference commonly used benchmarks and their subsectors to monitor risk and performance. Accordingly, White Mountains has further disaggregated this asset class into subclasses based on the similar sectors and industry classifications it uses to evaluate investment risk and performance against commonly used benchmarks, such as the Bloomberg Barclays U.S. Intermediate Aggregate.
December 31, 2023
MillionsFair ValueLevel 1Level 2Level 3
Fixed maturity investments:
U.S. Government and agency obligations$204.9 $204.9 $ $ 
Debt securities issued by corporations: 
Financials309.8  309.8  
Consumer214.6  214.6  
Industrial121.6  121.6  
Healthcare121.3  121.3  
Technology108.9  108.9  
Utilities70.2  70.2  
Communications46.3  46.3  
Energy28.9  28.9  
Materials23.4  23.4  
Total debt securities issued by corporations1,045.0  1,045.0  
Municipal obligations260.9  260.9  
Mortgage and asset-backed securities389.4  389.4  
Collateralized loan obligations209.1  209.1  
Total fixed maturity investments2,109.3 204.9 1,904.4  
Short-term investments1,487.9 1,457.6 30.3  
Common equity securities:
Exchange-traded funds137.8 137.8   
Other (1)
400.6  400.6  
Total common equity securities538.4 137.8 400.6  
Investment in MediaAlpha254.9 254.9   
Other long-term investments1,164.4  26.2 1,138.2 
Other long-term investments NAV (2)
833.8    
Total other long-term investments1,998.2  26.2 1,138.2 
Total investments$6,388.7 $2,055.2 $2,361.5 $1,138.2 
(1) Consists of investments in listed funds that predominantly invest in international equities.
(2) Consists of private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits and ILS funds for which fair value is measured using NAV as a practical expedient. Investments for which fair value is measured at NAV are not classified within the fair value hierarchy.


F - 24


December 31, 2022
MillionsFair ValueLevel 1Level 2Level 3
Fixed maturity investments:    
U.S. Government and agency obligations$206.4 $206.4 $— $— 
Debt securities issued by corporations:    
Financials291.2 — 291.2 — 
Consumer191.9 — 191.9 — 
Industrial115.4 — 115.4 — 
Healthcare121.3 — 121.3 — 
Technology123.7 — 123.7 — 
Utilities73.8 — 73.8 — 
Communications47.9 — 47.9 — 
Energy33.9 — 33.9 — 
Materials19.7 — 19.7 — 
Total debt securities issued by corporations1,018.8 — 1,018.8 — 
Municipal obligations258.6 — 258.6 — 
Mortgage and asset-backed securities254.2 — 254.2 — 
Collateralized loan obligations182.9 — 182.9 — 
Total fixed maturity investments1,920.9 206.4 1,714.5 — 
Short-term investments924.1 924.1 — — 
Common equity securities:
Exchange-traded funds333.8 333.8 — — 
Other (1)
334.6 — 334.6 — 
Total common equity securities668.4 333.8 334.6 — 
Investment in MediaAlpha168.6 168.6 — — 
Other long-term investments926.4 — 14.8 911.6 
Other long-term investments NAV (2)
561.6 — — — 
Total other long-term investments1,488.0 — 14.8 911.6 
Total investments$5,170.0 $1,632.9 $2,063.9 $911.6 
(1) Consists of investments in listed funds that predominantly invest in international equities.
(2) Consists of private equity funds and hedge funds, a bank loan fund, Lloyd’s trust deposits and ILS funds for which fair value is measured using NAV as a practical expedient. Investments for which fair value is measured at NAV are not classified within the fair value hierarchy.

Investments Held on Deposit or as Collateral

As of December 31, 2023 and 2022, investments of $585.6 million and $500.5 million were held in trusts required to be maintained in relation to HG Global’s reinsurance agreements with BAM.
HG Global is required to maintain an interest reserve account in connection with its senior notes issued in 2022. As of December 31, 2023 and 2022, the fair value of the interest reserve account, which is included in short-term investments, was $30.4 million and $31.2 million. See Note 7 — “Debt”.
BAM is required to maintain deposits with certain insurance regulatory agencies in order to maintain its insurance licenses. The fair value of such deposits, which represent state deposits and are included within the investment portfolio, totaled $4.6 million as of both December 31, 2023 and 2022.
Lloyd’s trust deposits are generally required of Lloyd's syndicates to protect policyholders in non-U.K. markets and are pledged into Lloyd’s trust accounts to provide a portion of the capital needed to support obligations at Lloyd’s. As of December 31, 2023 and 2022, Ark held Lloyd’s trust deposits with a fair value of $158.0 million and $137.4 million.
The underwriting capacity of a member of Lloyd’s must be supported by providing a deposit (“Funds at Lloyd’s”) in the form of cash, securities or letters of credit in an amount determined by Lloyd’s. The amount of such deposit is calculated for each member through the completion of an annual capital adequacy exercise. These requirements allow Lloyd’s to evaluate that each member has sufficient assets to meet its underwriting liabilities plus a required solvency margin. As of December 31, 2023 and 2022, the fair value of Ark’s Funds at Lloyd’s investment deposits totaled $344.7 million and $319.2 million.
As of December 31, 2023 and 2022, Ark held additional investments on deposit or as collateral for insurance regulators and reinsurance counterparties of $244.5 million and $257.0 million.
F - 25


As of December 31, 2023 and 2022, Ark has $198.9 million and $90.3 million of short-term investments pledged as collateral under uncommitted standby letters of credit. See Note 7 — “Debt”.
As of December 31, 2023 and 2022, short-term investments of $265.3 million and $203.7 million were held in a collateral trust account required to be maintained in relation to WM Outrigger Re’s reinsurance agreement with GAIL.
Kudu is required to maintain an interest reserve account in connection with its credit facility. As of December 31, 2023, the interest reserve account of $14.9 million was held in short term investments. As of December 31, 2022 the interest reserve account of $12.2 million was held in restricted cash. See Note 7 - “Debt.”

Debt Securities Issued by Corporations

The following table presents the credit ratings of debt securities issued by corporations held in White Mountains’s investment portfolio as of December 31, 2023 and 2022:
Fair Value as of December 31,
Millions20232022
AAA$11.5 $11.3 
AA83.8 96.0 
A552.4 567.9 
BBB390.9 337.7 
Other6.4 5.9 
Debt securities issued by corporations (1)
$1,045.0 $1,018.8 
(1)    Credit ratings are based upon issuer credit ratings provided by Standard & Poor’s Financial Services LLC (“Standard & Poor’s”), or if unrated by Standard & Poor’s, long-term obligation ratings provided by Moody’s Investor Service, Inc.

Mortgage and Asset-backed Securities and Collateralized Loan Obligations

The following table presents the fair value of White Mountains’s mortgage and asset-backed securities and collateralized loan obligations as of December 31, 2023 and 2022:
 December 31, 2023December 31, 2022
MillionsFair ValueLevel 2Level 3Fair ValueLevel 2Level 3
Mortgage-backed securities:      
Agency:      
FNMA$198.8 $198.8 $ $124.5 $124.5 $— 
FHLMC137.2 137.2  78.8 78.8 — 
GNMA30.2 30.2  28.3 28.3 — 
Total agency (1)
366.2 366.2  231.6 231.6 — 
Non-agency: Residential.2 .2  .3 .3 — 
Total non-agency.2 .2  .3 .3 — 
Total mortgage-backed securities366.4 366.4  231.9 231.9 — 
Other asset-backed securities:
Credit card receivables3.3 3.3  11.9 11.9 — 
Vehicle receivables17.2 17.2  10.4 10.4 — 
Other2.5 2.5  — — — 
Total other asset-backed securities23.0 23.0  22.3 22.3 — 
Total mortgage and asset-backed securities389.4 389.4  254.2 254.2 — 
Collateralized loan obligations:209.1 209.1  182.9 182.9 — 
Total mortgage and asset-backed securities and
   collateralized loan obligations
$598.5 $598.5 $ $437.1 $437.1 $— 
(1) Represents publicly traded mortgage-backed securities which carry the full faith and credit guaranty of the U.S. Government (i.e., GNMA) or are guaranteed by a government sponsored entity (i.e., FNMA, FHLMC).

As of December 31, 2023, White Mountains’s investment portfolio included $209.1 million of collateralized loan obligations that are within the senior tranches of their respective fund securitization structures. All of White Mountains’s collateral loan obligations were rated AAA or AA as of December 31, 2023.

F - 26


Investment in MediaAlpha

Following the MediaAlpha IPO, White Mountains’s investment in MediaAlpha is accounted for at fair value based on the publicly traded share price of MediaAlpha’s common stock and is presented as a separate line item on the balance sheet.
During the second quarter of 2023, White Mountains completed a tender offer to purchase 5.9 million additional shares of MediaAlpha at a purchase price of $10.00 per share. As of December 31, 2023, White Mountains owned 22.9 million shares, representing a 34.9% basic ownership interest (33.1% on a fully-diluted/fully-converted basis). See Note 16 — “Equity Method Eligible Investments.” At White Mountains’s current level of ownership, each $1.00 per share increase or decrease in the share price of MediaAlpha will result in an approximate $9.00 per share increase or decrease in White Mountains’s book value per share. At the December 31, 2023 closing price of $11.15 per share, the fair value of White Mountains’s investment in MediaAlpha was $254.9 million.

Other Long-Term Investments

Fair Value as of December 31, 2023
MillionsArk/WM OutriggerKuduOtherTotal
Kudu’s Participation Contracts$ $890.5 $ $890.5 
PassportCard/DavidShield
  150.0 150.0 
Elementum Holdings, L.P.  35.0 35.0 
Other unconsolidated entities (1)
  48.1 48.1 
Total unconsolidated entities 890.5 233.1 1,123.6 
Private equity funds and hedge funds55.5  257.4 312.9 
Bank loan fund194.4   194.4 
ILS funds  160.5 160.5 
Lloyd’s trust deposits158.0   158.0 
Private debt instruments  10.0 10.0 
Other33.0 5.8  38.8 
Total other long-term investments$440.9 $896.3 $661.0 $1,998.2 
(1) Includes White Mountains’s noncontrolling equity interests in certain preferred securities, private common equity securities, limited liability company units and Simple Agreement for Future Equity (“SAFE”) investments.

Fair Value as of December 31, 2022
MillionsArk/WM OutriggerKuduOtherTotal
Kudu’s Participation Contracts$— $695.9 $— $695.9 
PassportCard/DavidShield
— — 135.0 135.0 
Elementum Holdings, L.P.— — 30.0 30.0 
Other unconsolidated entities (1)
— — 37.2 37.2 
Total unconsolidated entities— 695.9 202.2 898.1 
Private equity funds and hedge funds40.4 — 157.4 197.8 
Bank loan fund174.8 — — 174.8 
ILS funds— — 49.3 49.3 
Lloyd’s trust deposits137.4 — — 137.4 
Private debt instruments— — 9.6 9.6 
Other21.0 — — 21.0 
Total other long-term investments$373.6 $695.9 $418.5 $1,488.0 
(1) Includes White Mountains’s noncontrolling equity interests in certain preferred securities, private common equity securities, limited liability company units and SAFE.




F - 27


Private Equity Funds and Hedge Funds
White Mountains invests in private equity funds and hedge funds, which are included in other long-term investments. The fair value of these investments is generally estimated using the NAV of the funds. As of December 31, 2023, White Mountains held investments in 16 private equity funds and two hedge funds.  The largest investment in a single private equity fund or hedge fund was $57.3 million and $49.0 million as of December 31, 2023 and December 31, 2022.
The following table presents the fair value of investments and unfunded commitments in private equity funds and hedge funds by investment objective and sector as of December 31, 2023 and 2022:
 December 31, 2023December 31, 2022
MillionsFair ValueUnfunded
Commitments
Fair ValueUnfunded
Commitments
Private equity funds    
Aerospace/Defense/Government$157.2 $17.4 $59.4 $37.5 
Financial services87.5 37.8 77.1 54.3 
Real estate3.9 2.5 4.1 2.5 
Total private equity funds248.6 57.7 140.6 94.3 
Hedge funds    
Long/short equity financials and business services54.4  49.0 — 
European small/mid cap9.9  8.2 — 
Total hedge funds64.3  57.2 — 
Total private equity funds and hedge funds
   included in other long-term investments
$312.9 $57.7 $197.8 $94.3 

Investments in private equity funds are generally subject to a lock-up period during which investors may not request a redemption. Distributions prior to the expected termination date of the fund may be limited to dividends or proceeds arising from the liquidation of the fund’s underlying investments. In addition, certain private equity funds have the option to extend the lock-up period.
The following table presents investments in private equity funds that were subject to lock-up periods as of December 31, 2023:
Millions1 – 3 years3 – 5 years5 – 10 years>10 yearsTotal
Private equity funds — expected lock-up period remaining$4.5 $71.0 $155.4 $17.7 $248.6 

Investors in private equity funds are generally subject to indemnification obligations outside of the capital commitment period and prior to the winding up of the fund. As of December 31, 2023 and 2022, White Mountains is not aware of any indemnification claims relating to its investments in private equity funds. 
Redemption of investments in most hedge funds is subject to restrictions, including lock-up periods where no redemptions or withdrawals are allowed, restrictions on redemption frequency and advance notice periods for redemptions. Amounts requested for redemptions remain subject to market fluctuations until the redemption effective date, which generally falls at the end of the defined redemption period. Advance notice requirements for redemptions from White Mountains’s hedge fund investments range from 45 to 90 days. One of White Mountains’s hedge fund investments also limits redemptions to every second anniversary following the date of the initial investment.
Bank Loan Fund
White Mountains’s other long-term investments include a bank loan fund with a fair value of $194.4 million and $174.8 million as of December 31, 2023 and 2022. The fair value of this investment is estimated using the NAV of the fund. The bank loan fund’s investment objective is to provide, on an unleveraged basis, high current income consistent with preservation of capital and low duration. The bank loan fund primarily invests in a broad portfolio of U.S. dollar-denominated, non-investment grade, floating-rate senior secured loans and may invest in other financial instruments, such as secured and unsecured corporate debt, credit default swaps, reverse repurchase agreements, synthetic indices and cash and cash equivalents.
The investment in the bank loan fund is subject to restrictions on redemption frequency and advance notice periods for redemptions. Amounts requested for redemptions remain subject to market fluctuations until the redemption effective date, which generally falls at the end of the defined redemption period. White Mountains may redeem all or a portion of its bank loan fund investment as of any calendar month-end upon 15 calendar days advanced written notice.

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Lloyd’s Trust Deposits
White Mountains’s other long-term investments include Lloyd’s trust deposits, which consist of non-U.K. deposits and Canadian comingled pooled funds. The Lloyd’s trust deposits invest primarily in short-term government securities, agency securities and corporate bonds held in trusts that are managed by Lloyd's of London. These investments are generally required of Lloyd's syndicates to protect policyholders in non-U.K. markets and are pledged into Lloyd’s trust accounts to provide a portion of the capital needed to support obligations at Lloyd’s. The fair value of the Lloyd’s trust deposits is generally estimated using the NAV of the funds. As of December 31, 2023 and 2022, White Mountains held Lloyd’s trust deposits with a fair value of $158.0 million and $137.4 million.

Insurance-Linked Securities Funds
White Mountains’s other long-term investments include ILS fund investments. The fair value of these investments is generally estimated using the NAV of the funds. As of December 31, 2023 and 2022, White Mountains held investments in ILS funds with a fair value of $160.5 million and $49.3 million.
Investments in ILS funds are generally subject to restrictions, including lock-up periods where no redemptions or withdrawals are allowed, non-renewal clauses, restrictions on redemption frequency and advance notice periods for redemptions. From time to time, natural catastrophe, liquidity, market or other events will occur that make the determination of fair value for underlying investments in ILS funds less certain due to the potential for loss development. In such circumstances, the impacted investments may be subject to additional lock-up provisions.
ILS funds are typically subject to monthly and annual restrictions on redemptions and advance redemption notice period requirements that range between 30 and 90 days. Amounts requested for redemption remain subject to market fluctuations until the redemption effective date, which is generally at the end of the defined redemption period or when the underlying investment has fully matured or been commuted.

Rollforward of Level 3 Investments

Level 3 measurements as of December 31, 2023 and 2022 consist of securities for which the estimated fair value has not been determined based upon quoted market price inputs for identical or similar securities. The following table presents the changes in White Mountains’s fair value measurements for Level 3 investments for the years ended December 31, 2023 and 2022:

Level 3 Investments
MillionsOther Long-term
Investments
Other Long-term
Investments
Balance as of December 31, 2022$911.6 Balance as of December 31, 2021$890.6 
Net realized and unrealized gains157.3 Net realized and unrealized gains60.4 
Purchases and contributions256.6 Purchases and contributions129.8 
Sales and distributions(187.3)Sales and distributions(169.2)
Transfers in Transfers in— 
Transfers out Transfers out— 
Balance as of December 31, 2023$1,138.2 Balance as of December 31, 2022$911.6 

Fair Value Measurements — Transfers Between Levels - For Years Ended December 31, 2023 and 2022
Transfers between levels are recorded using the fair value measurement as of the end of the quarterly period in which the event or change in circumstance giving rise to the transfer occurred.
During 2023 and 2022, there were no fixed maturity investments or other long-term investments classified as Level 3 measurements in the prior period that were transferred to Level 2 measurements.
During 2023 and 2022, there were no fixed maturity investments or other long-term investments classified as Level 2 measurements in the prior period that were transferred to Level 3 measurements.



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Significant Unobservable Inputs

The following tables present significant unobservable inputs used in estimating the fair value of White Mountains’s other long-term investments classified within Level 3 as of December 31, 2023 and 2022. The tables below exclude $19.0 million and $41.1 million of Level 3 other long-term investments generally valued based on recent or expected transaction prices. The fair value of investments in private equity funds and hedge funds, bank loan funds, Lloyd’s trust deposits and ILS funds are generally estimated using the NAV of the funds.

$ in MillionsDecember 31, 2023
Description
Valuation Technique(s) (1)
Fair Value (2)
Unobservable Inputs
Discount Rate (6)
Terminal Cash Flow Exit Multiple (x) or Terminal Revenue Growth Rate (%) (6)
Kudu’s Participation Contracts (3)(4)(5)
Discounted cash flow
$890.518% - 25%7x - 22x
PassportCard/DavidShieldDiscounted cash flow$150.024%4%
Elementum Holdings, L.P.Discounted cash flow$35.021%4%
Preferred securitiesDiscounted cash flow$28.28%N/A
Private debt instrumentsDiscounted cash flow$15.511% - 12%N/A
(1) Key inputs to the discounted cash flow analysis generally include projections of future revenue and earnings, discount rates and terminal exit multiples or growth rates.
(2) Includes the net unrealized investment gains (losses) associated with foreign currency; foreign currency effects based on observable inputs.
(3)Since Kudu’s Participation Contracts are not subject to corporate taxes within Kudu Investment Management, LLC, pre-tax discount rates are applied to pre-tax cash flows in determining fair values. The weighted average discount rate and weighted average terminal cash flow exit multiple applied to Kudu’s Participation Contracts was 20% and 13x.
(4) In 2023, Kudu deployed a total of $163.8 into new and existing Participation Contracts.
(5) As of December 31, 2023, one of Kudu’s Participation Contracts with a total fair value of $69.1 was valued using a probability weighted expected return method, which takes into account factors such as a discounted cash flow analysis, the expected value to be received in a pending sales transaction and the likelihood that a sales transaction will take place.
(6) Increases (decreases) to the discount rates in isolation would result in lower (higher) fair value measurements, while increases (decreases) to the terminal cash flow exit multiples or terminal revenue growth rates in isolation would result in higher (lower) fair value measurements.

$ in MillionsDecember 31, 2022
Description
Valuation Technique(s) (1)
Fair Value (2)
Unobservable Inputs
Discount Rate (6)
Terminal Cash Flow Exit Multiple (x) or Terminal Revenue Growth Rate (%) (6)
Kudu’s Participation Contracts (3)(4)(5)
Discounted cash flow$695.918% - 25%7x - 16x
PassportCard/DavidShieldDiscounted cash flow$135.024%4%
Elementum Holdings, L.P.Discounted cash flow$30.021%4%
Private debt instrumentsDiscounted cash flow$9.611%N/A
(1) Key inputs to the discounted cash flow analysis generally include projections of future revenue and earnings, discount rates and terminal exit multiples or growth rates.
(2) Includes the net unrealized investment gains (losses) associated with foreign currency; foreign currency effects based on observable inputs.
(3)Since Kudu’s Participation Contracts are not subject to corporate taxes within Kudu Investment Management, LLC, pre-tax discount rates are applied to pre-tax cash flows in determining fair values. The weighted average discount rate and weighted average terminal cash flow exit multiple applied to Kudu’s Participation Contracts is 21% and 12x.
(4) In 2022, Kudu deployed a total of $99.8 into new and existing Participation Contracts.
(5) As of December 31, 2022, two of Kudu’s Participation Contracts with a total fair value of $189.0 were valued using a probability weighted expected return method, which takes into account factors such as a discounted cash flow analysis, the expected value to be received in a pending sales transaction and the likelihood that a sales transaction will take place.
(6) Increases (decreases) to the discount rates in isolation would result in lower (higher) fair value measurements, while increases (decreases) to the terminal cash flow exit multiples or terminal revenue growth rates in isolation would result in higher (lower) fair value measurements.


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Note 4. Goodwill and Other Intangible Assets

White Mountains accounts for business combinations using the acquisition method. Under the acquisition method, White Mountains recognizes and measures the assets acquired, liabilities assumed and any noncontrolling interest in the acquired entities at their acquisition date fair values. Goodwill represents the excess of the amount paid to acquire businesses over the fair value of identifiable net assets at the date of acquisition. The estimated acquisition date fair values, generally consisting of intangible assets and liabilities for contingent consideration, may be recorded at provisional amounts in circumstances where the information necessary to complete the acquisition accounting is not available at the reporting date. Any such provisional amounts are finalized as measurement period adjustments within one year of the acquisition date.
The following table presents the economic lives, acquisition date fair values, accumulated amortization and net carrying value for other intangible assets and goodwill as of December 31, 2023 and 2022:
$ in MillionsWeighted Average Economic
 Life
(in years)
December 31, 2023December 31, 2022
Acquisition Date Fair ValueAccumulated AmortizationNet Carrying ValueAcquisition Date Fair ValueAccumulated AmortizationNet Carrying Value
Goodwill:
ArkN/A$116.8 $ $116.8 $116.8 $— $116.8 
KuduN/A7.6  7.6 7.6 — 7.6 
Other OperationsN/A44.4  44.4 52.1 — 52.1 
Total goodwill168.8  168.8 176.5 — 176.5 
Other intangible assets:
Ark
Underwriting capacityN/A175.7  175.7 175.7 — 175.7 
Kudu
   Trade names7.02.2 1.5 .7 2.2 1.2 1.0 
Other Operations
   Trade names13.313.3 4.1 9.2 17.9 3.0 14.9 
Customer relationships10.924.8 10.3 14.5 29.5 7.5 22.0 
Other12.12.8 1.1 1.7 2.8 .5 2.3 
Subtotal40.9 15.5 25.4 50.2 11.0 39.2 
Total other intangible assets218.8 17.0 201.8 228.1 12.2 215.9 
Total goodwill and other intangible assets
$387.6 $17.0 370.6 $404.6 12.2 392.4 

Intangible Assets Valuation Methods

The goodwill recognized for the entities shown above is attributed to expected future cash flows. The acquisition date fair values of other intangible assets with finite lives are estimated using income approach techniques, which use future expected cash flows to develop a discounted present value amount.
The multi-period-excess-earnings method estimates fair value using the present value of the incremental after-tax cash flows attributable solely to the other intangible asset over its remaining life. This approach was used to estimate the fair value of other intangible assets associated with the underwriting capacity and customer relationships.
The relief-from-royalty method was used to estimate fair value for other intangible assets that relate to rights that could be obtained via a license from a third-party owner. Under this method, the fair value is estimated using the present value of license fees avoided by owning rather than leasing the asset. This technique was used to estimate the fair value of trade names, patents and certain information technology platforms.
The with-or-without method estimates the fair value of other intangible assets that provide an incremental benefit. Under this method, the fair value of the other intangible asset is calculated by comparing the value of the entity with and without the other intangible asset. This approach was used to estimate the fair value of non-compete agreements.
On at least an annual basis beginning no later than the interim period included in the one-year anniversary of an acquisition, White Mountains evaluates goodwill and other intangible assets for potential impairment. Between annual evaluations, White Mountains considers changes in circumstances or events subsequent to the most recent evaluation that may indicate that an impairment exists and, if necessary will perform an interim review for potential impairment.
During the year ended December 31, 2023 and 2022, White Mountains did not recognize any impairments to goodwill and other intangible assets.

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Rollforward of Goodwill and Other Intangible Asset

The following table presents the change in goodwill and other intangible assets:
December 31, 2023December 31, 2022
MillionsGoodwillOther Intangible AssetsTotal Goodwill and Other Intangible AssetsGoodwillOther Intangible AssetsTotal Goodwill and Other Intangible Assets
Beginning balance$176.5 $215.9 $392.4 $142.3 $198.2 $340.5 
Acquisition of businesses (1)
   59.5 — 59.5 
Disposition of businesses (2)
(6.7)(6.9)(13.6)   
Attribution of acquisition date fair value
   estimates between goodwill and other
   intangible assets
   (22.9)22.9 — 
Measurement period adjustments (3)
(1.0) (1.0)(2.4)— (2.4)
Amortization (7.2)(7.2)— (5.2)(5.2)
Ending balance$168.8 $201.8 $370.6 $176.5 $215.9 $392.4 
(1) Relates to acquisitions within Other Operations.
(2) Relates to a disposition within Other Operations.
(3) Measurement period adjustments relate to updated information about acquisition date fair values of assets acquired and liabilities assumed. Adjustments relate to acquisitions within Other Operations.

During the years ended December 31, 2023 and 2022, White Mountains did not recognize any impairments to goodwill and other intangible assets.

Amortization of Other Intangible Assets

Amortization expense was $7.2 million, $5.2 million and $4.6 million for the years ended December 31, 2023, 2022 and 2021.
White Mountains expects to recognize amortization expense in each of the next five years as presented in the following table:
MillionsAmortization Expense
2024$5.5 
20254.8 
20264.0 
20273.6 
2028 and years after8.2 
Total (1)
$26.1 
(1) Excludes Ark’s indefinite-lived intangible assets of $175.7.


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Note 5.  Loss and Loss Adjustment Expense Reserves

Ark establishes loss and LAE reserves that are estimates of amounts needed to pay claims and related expenses in the future for insured events that have already occurred. Ark’s process of estimating reserves involves a considerable degree of judgment by management and, as of any given date, is inherently uncertain.
WM Outrigger Re entered into collateralized quota share agreements with GAIL to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2023 underwriting year. WM Outrigger Re’s quota share reinsurance agreement with GAIL, including its loss and LAE reserves, eliminates in White Mountains’s consolidated financial statements.
HG Re and BAM do not have any outstanding loss and LAE reserves related to BAM’s municipal bond guarantee business.
Loss and LAE reserves are typically comprised of case reserves for claims reported and reserves for losses that have occurred but for which claims have not yet been reported, referred to as IBNR reserves. IBNR reserves include a provision for expected future development on case reserves. Case reserves are estimated based on the experience and knowledge of claims staff regarding the nature and potential cost of each claim and are adjusted as additional information becomes known or payments are made. IBNR reserves are derived by subtracting paid loss and LAE and case reserves from estimates of ultimate loss and LAE. Actuaries estimate ultimate loss and LAE using various generally accepted actuarial methods applied to known losses and other relevant information. Like case reserves, IBNR reserves are adjusted as additional information becomes known or payments are made.
Losses and LAE are categorized by the year in which the policy is underwritten (the year of account, or underwriting year) for purposes of Ark’s claims management and estimation of the ultimate loss and LAE reserves. For purposes of Ark’s reporting under GAAP, losses and LAE are categorized by the year in which the claim is incurred (the accident year).
Ultimate loss and LAE are generally determined by extrapolation of claims emergence and settlement patterns observed in the past that can reasonably be expected to persist into the future. In forecasting ultimate loss and LAE for any line of business, past experience with respect to that line of business is the primary resource, but cannot be relied upon in isolation. Ark’s own experience, particularly claims development experience, such as trends in case reserves, payments on and closings of claims, as well as changes in business mix and coverage limits, is the most important information for estimating its reserves. External data, available from organizations such as the Lloyd’s Market Association, consulting firms and other insurance and reinsurance companies, is used to supplement or corroborate Ark’s own experience. External data can be especially useful for estimating costs on newer lines of business. Ultimate loss and LAE for major losses and catastrophes are estimated based on the known and expected exposures to the loss event, rather than simply relying on the extrapolation of reported and settled claims.
For some lines of business, such as long-tail coverages discussed below, claims data reported in the most recent years of account are often too limited to provide a meaningful basis for analysis due to the typical delay in reporting and settling of claims. For this type of business, Ark uses an expected loss ratio method for the initial years of account. This is a standard and accepted actuarial reserve estimation method in these circumstances in which the loss ratio is selected based upon information used in pricing policies for that line of business, as well as any publicly available industry data, such as industry pricing, experience and trends.
Uncertainties in estimating ultimate loss and LAE are magnified by the time lag between when a claim actually occurs and when it is reported and eventually settled. This time lag is sometimes referred to as the “claim-tail”. The claim-tail for reinsurance and insurance obtained through brokers, MGAs and reinsurance intermediaries (collectively, the “insurance and reinsurance intermediaries”) is further extended because claims are first reported to either the original primary insurance company or the insurance and reinsurance intermediaries. The claim-tail for most property coverages is typically short (usually a few days up to a few months). Settlements for casualty/liability coverages can extend for long periods of time as claims are often reported and ultimately paid or settled years after the related loss events occur. During the long claims reporting and settlement period, additional facts regarding coverages written in prior years of account, as well as about actual claims and trends, may become known and, as a result, Ark may adjust its reserves. The inherent uncertainties of estimating reserves are increased by the diversity of loss development patterns among different types of reinsurance treaties, facultative contracts or direct insurance contracts, the necessary reliance on the ceding companies and insurance and reinsurance intermediaries for information regarding reported claims and the differing reserving practices among ceding companies and insurance and reinsurance intermediaries.
If management determines that an adjustment is appropriate, the adjustment is booked in the accounting period in which such determination is made. Accordingly, should reserves need to be increased or decreased in the future from amounts currently established, future results of operations would be negatively or positively impacted.
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In determining ultimate loss and LAE, the cost to indemnify claimants, provide needed legal defense and other services for insureds and administer the investigation and adjustment of claims are considered. These claims costs are influenced by many factors that change over time, such as expanded coverage definitions as a result of new court decisions, inflation in costs to repair or replace damaged property, inflation in the cost of medical services, and legislated changes in statutory benefits, as well as by the unique facts that pertain to each claim. As a result, the rate at which claims arose in the past and the costs to settle them may not always be representative of what will occur in the future. The factors influencing changes in claims costs are often difficult to isolate or quantify and developments in paid and incurred losses from historical trends are frequently subject to multiple and conflicting interpretations. Changes in coverage terms or claims handling practices may also cause future experience and/or development patterns to vary from the past. A key objective of actuaries in developing estimates of ultimate loss and LAE and resulting IBNR reserves is to identify aberrations and systemic changes occurring within historical experience and accurately adjust for them so that the future can be projected more reliably. Because of the factors previously discussed, this process requires the use of informed judgment and is inherently uncertain.
Ark performs an actuarial review of its recorded loss and LAE reserves each quarter, using several generally accepted actuarial methods to evaluate its loss reserves, each of which has its own strengths and weaknesses. Management places more or less reliance on a particular method based on the facts and circumstances at the time the reserve estimates are made. These methods generally fall into one of the following categories or are hybrids of one or more of the following categories:

Historical paid loss development methods: These methods use historical loss payments over discrete periods of time to estimate future losses. Historical paid loss development methods assume that the ratio of losses paid in one period to losses paid in an earlier period will remain constant. These methods necessarily assume that factors that have affected paid losses in the past, such as inflation or the effects of litigation, will remain constant in the future. Because historical paid loss development methods do not use case reserves to estimate ultimate losses, they can be more reliable than the other methods discussed below that look to case reserves (such as actuarial methods that use incurred losses) in situations where there are significant changes in how case reserves are established by a company’s claims adjusters. However, historical paid loss development methods are more leveraged, meaning that small changes in payments have a larger impact on estimates of ultimate losses, than actuarial methods that use incurred losses because cumulative loss payments take much longer to approach the expected ultimate losses than cumulative incurred amounts. In addition, and for similar reasons, historical paid loss development methods are often slow to react to situations when new or different factors arise than those that have affected paid losses in the past.

Historical incurred loss development methods: These methods, like historical paid loss development methods, assume that the ratio of losses in one period to losses in an earlier period will remain constant in the future. However, instead of using paid losses, these methods use incurred losses (i.e., the sum of cumulative historical loss payments plus outstanding case reserves) over discrete periods of time to estimate future losses. Historical incurred loss development methods can be preferable to historical paid loss development methods because they explicitly take into account open cases and the claims adjusters’ evaluations of the cost to settle all known claims. However, historical incurred loss development methods necessarily assume that case reserving practices are consistently applied over time. Therefore, when there have been significant changes in how case reserves are established, using incurred loss data to project ultimate losses can be less reliable than other methods.

Expected loss ratio methods: These methods are based on the assumption that ultimate losses vary proportionately with premiums. Expected loss ratios are typically developed based upon the information used in pricing and are multiplied by the total amount of premiums earned to calculate ultimate losses. Expected loss ratio methods are useful for estimating ultimate losses in the early years of long-tail lines of business, when little or no paid or incurred loss information is available.

Bornhuetter-Ferguson methods: These methods are a blend of the expected loss ratio and loss development methods. The percent of incurred (or paid) loss to ultimate loss implied by the selected development pattern from the incurred (or paid) loss development method is used to determine the percentage of ultimate loss yet to be developed. Inception to date losses are added to losses yet to be developed, yielding an estimate of ultimate for each year of account.

Adjusted historical paid and incurred loss development methods: These methods take traditional historical paid and incurred loss development methods and adjust them for the estimated impact of changes from the past in factors such as inflation, the speed of claims payment or the adequacy of case reserves. Adjusted historical paid and incurred loss development methods are often more reliable methods of predicting ultimate losses in periods of significant change, provided the actuaries can develop methods to reasonably quantify the impact of changes.

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As part of Ark’s quarterly actuarial review, Ark compares the previous quarter’s projections of incurred, paid and case reserve activity, including amounts incurred but not reported, to actual amounts experienced in the quarter. Differences between previous estimates and actual experience are evaluated to determine whether a given actuarial method for estimating loss and LAE reserves should be relied upon to a greater or lesser extent than it has been in the past. While some variance is expected each quarter due to the inherent uncertainty in estimating loss and LAE reserves, persistent or large variances would indicate that prior assumptions and/or reliance on certain actuarial methods may need to be revised going forward.
Upon completion of each quarterly review, Ark selects indicated loss and LAE reserve levels based on the results of the actuarial methods described previously, which are the primary consideration in determining management's best estimate of required loss and LAE reserves. However, in making its best estimate, management also considers other qualitative factors that may lead to a difference between held reserves and the actuarial central estimate of reserves. Typically, these qualitative factors are considered when management and Ark’s actuaries conclude that there is insufficient historical incurred and paid loss information or that trends included in the historical incurred and paid loss information are not likely to repeat in the future. Such qualitative factors include, among others, recent entry into new markets or new products, improvements in the claims department that are expected to lessen future ultimate loss costs, legal and regulatory developments or other uncertainties that may arise.

Ark Reserve Estimation by Line of Business

The process of establishing loss and LAE reserves, including amounts incurred but not reported, is complex and imprecise, as it must consider many variables that are subject to the outcome of future events. As a result, informed subjective estimates and judgments as to the ultimate exposure to losses are an integral component of the loss and LAE reserving process. Ark categorizes and tracks insurance and reinsurance reserves by “reserving class of business” for each underwriting office, London and Bermuda, and then aggregates the reserving classes by line of business, which are summarized herein as property and accident & health, specialty, marine & energy, casualty-active and casualty-runoff.
Ark regularly reviews the appropriateness of its loss and LAE reserves at the reserving class of business level, considering a variety of trends that impact the ultimate settlement of claims for the subsets of claims in each particular reserving class.
For loss and LAE reserves as of December 31, 2023, Ark considers that the impact of the various reserving factors, as described below, on future paid losses would be similar to the impact of those factors on historical paid losses.
The major causes of material uncertainty (i.e., reserving factors) generally will vary for each line of business, as well as for each separately analyzed reserving class of business within the line of business. Also, reserving factors can have offsetting or compounding effects on estimated loss and LAE reserves. In most cases, it is not possible to measure the effect of a single reserving factor and construct a meaningful sensitivity expectation. Actual results will likely vary from expectations for each of these assumptions, resulting in an ultimate claims liability that is different from that being estimated currently.
Additional causes of material uncertainty exist in most product lines and may impact the types of claims that could occur within a particular line of business or reserving class of business. Examples where reserving factors, within a line of business or reserving class of business, are subject to change include changing types of insureds (e.g., size of account, industry insured, jurisdiction), changing underwriting standards, or changing policy provisions (e.g., deductibles, policy limits, endorsements).
Following is a detailed description of the reserve factors and consideration for each of Ark’s reserving lines of business.

Property and Accident & Health
Ark’s property and accident & health reserving line of business contains short-tail reserving classes. As such, reserving for these classes generally involves less uncertainty given the speed of settlement.
For property reserving classes, the reserve risk is driven primarily by occasional catastrophe events, though the financial effect of these is mitigated by reinsurance and retrocessional purchases. Ark writes property business on both an insurance and reinsurance basis. The insurance business primarily consists of direct and facultative contracts. However, some business is written through line slips and MGA binding authorities, which could have a longer-tail due to the increased exposure period caused by underlying policies attaching to the binder contract. The reinsurance business can also have a longer-tail due to timing delays resulting from attachment points on excess of loss contracts.
For accident & health reserving classes, the losses emanate from a wide range of personal accident, sickness, travel and medical insurance risks. The underlying business is a mix of direct and facultative contracts, as well as some MGA and reinsurance contracts, which are typically shorter-tail lines. Certain smaller components of the accident & health business can be longer-tail. The accident & health business is also exposed to occasional catastrophic events though not to the same degree as the property business.
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Specialty
Ark’s specialty portfolio is comprised of a diverse portfolio of insurance and reinsurance subclasses of business including aviation, space, political and credit, cyber, terrorism and political violence, product defect and contamination, nuclear, fine art & specie, surety and mortgage. Certain subclasses of business are exposed to both catastrophe events and man-made loss events; for example, terrorism, war and war-like actions, political violence and space. Although these subclasses have different coverages and exposures, they are all short-tail in nature and have similar reserving features.

Marine & Energy
Ark’s marine & energy reserving line of business is underwritten on both an insurance and reinsurance basis and can be broken down into physical damage on marine risks, physical damage on upstream energy platforms and marine & energy liabilities.
The marine reserving classes consist primarily of marine hull, cargo and specie risks. These all generally have some element of transportability, which mitigates the catastrophe risk exposure; for example, having the ability to move out of the path of a hurricane if provided with sufficient notice. The marine reserving classes are generally shorter-tail.
The energy platform reserving classes cover risks that are less transportable and therefore are exposed to catastrophe events similar to property reserving classes. Other energy reserving classes cover construction contracts, which often have considerably protracted exposure periods with the bulk of the risk towards the end of the coverage period. This can have the effect of increasing the tail on an otherwise short-tail reserving class.
The marine & energy liability reserving classes, which represent a smaller portion of the marine & energy business, are typically longer-tail compared to physical damage reserving classes.

Casualty–Active and Casualty–Runoff
Ark’s casualty reserving lines of business, which include casualty–active and casualty–runoff, are long-tail classes of business. Consequently, the ultimate liability may not be known at the date of loss, which results in greater uncertainty when reserving for casualty lines.
The casualty–active line of business consists of U.S. reinsurance and insurance risks written on an excess of loss basis. The casualty–runoff line of business consists of international reinsurance risks and U.S. casualty insurance risks written through an MGA binding authority. The losses arising from these lines of business are primarily related to medical malpractice, professional liability and general liability coverages, which are long-tail lines of business.
Casualty policies are generally written on either a claims-made or occurrence basis. On a claims-made basis, the trigger of loss is based on the date that the loss is reported. On an occurrence basis, the trigger of loss is the date that the loss occurred. Due to delays between loss occurrence and loss reporting, business written on an occurrence basis can be longer-tail than business written on a claims-made basis.
There are a number of common reserving factors for casualty lines that can affect the estimated casualty reserves, including:
Changes in claims-handling practices, both in-house and through third-party claims administrators,
Changes in court interpretations of policy provisions, and
Trends in litigation or jury awards.

Cumulative Number of Reported Claims

Ark counts a claim for each unique combination of individual claimant, loss event and risk. A claim is still counted if the claim is closed with no payment. Bulk-coded losses are counted as one claim, as underlying claim counts are not available.

Discounting

Ark does not discount loss and LAE reserves.

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Impact of Third-Party Capital

For the years of account prior to the Ark Transaction, a significant proportion of the Syndicates’ underwriting capital was provided by TPC Providers using whole account reinsurance contracts with Ark’s corporate member. For the years of account subsequent to the Ark Transaction, Ark is no longer using TPC Providers to provide underwriting capital for the Syndicates.
A Reinsurance to Close (“RITC”) agreement is generally put in place after the third year of operations for a year of account such that the outstanding loss and LAE reserves, including future development thereon, are reinsured into the next year of account. As a result, and in combination with the changing participation provided by TPC Providers, Ark’s participation on outstanding loss and LAE reserves reinsured into the next year of account changes. The impact of the changes in TPC Providers’ participation are reflected in the table below. After 2023, Ark is no longer subject to changes in TPC Providers’ participation.
During 2023, an RITC agreement was executed such that the outstanding loss and LAE reserves for claims arising out of the 2020 year of account, for which the TPC Providers’ participation in the total net results of the Syndicates was 42.8%, were reinsured into the 2021 year of account, for which the TPC Providers’ participation in the total net results of the Syndicates was 0.0%.
During 2022, an RITC agreement was executed such that the outstanding loss and LAE reserves for claims arising out of the 2019 year of account, for which the TPC Providers’ participation in the total net results of the Syndicates was 58.3%, were reinsured into the 2020 year of account, for which the TPC Providers’ participation in the total net results of the Syndicates was 42.8%.
During 2021, an RITC was executed such that the outstanding loss and LAE reserves for claims arising out of the 2018 year of account, for which the TPC Providers’ participation in the total net results of the Syndicates was 57.6%, were reinsured into the 2019 year of account, for which the TPC Providers’ participation in the total net results of the Syndicates was 58.3%.

Loss and Loss Adjustment Expense Reserve Summary

The following table summarizes the loss and LAE reserve activity of the Ark/WM Outrigger segment for the years ended December 31, 2023, 2022 and 2021:
Year Ended December 31,
Millions202320222021
Gross beginning balance$1,296.5 $894.7 $696.0 
Less: beginning reinsurance recoverable on unpaid losses (1)
(505.0)(428.9)(433.4)
Net loss and LAE reserves791.5 465.8 262.6 
Losses and LAE incurred relating to:
      Current year losses706.9 588.1 336.3 
      Prior year losses19.9 (51.7)(21.5)
Net incurred losses and LAE726.8 536.4 314.8 
Loss and LAE paid relating to:
Current year losses(51.3)(98.9)(43.9)
   Prior year losses(356.6)(158.6)(61.6)
Net paid losses and LAE(407.9)(257.5)(105.5)
Change in TPC Providers’ participation (2)
145.4 57.5 (2.2)
Foreign currency translation and other adjustments to loss and LAE reserves8.5 (10.7)(3.9)
Net ending balance1,264.3 791.5 465.8 
Plus: ending reinsurance recoverable on unpaid losses (3)
340.8 505.0 428.9 
Gross ending balance$1,605.1 $1,296.5 $894.7 
(1) The beginning reinsurance recoverable on unpaid losses includes amounts attributable to TPC Providers of $145.4, $276.8 and $319.2 as of December 31, 2022, 2021 and 2020.
(2) Amount represents the impact to net loss and LAE reserves due to a change in the TPC Providers’ participation related to the annual RITC process.
(3) The ending reinsurance recoverable on unpaid losses includes amounts attributable to TPC Providers of $0.0, $145.4 and $276.8 as of December 31, 2023, 2022 and 2021.


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During the year ended December 31, 2023, the Ark/WM Outrigger segment experienced $19.9 million of net unfavorable prior year loss reserve development. The net unfavorable prior year loss reserve development was driven primarily by the property and accident & health ($41.7 million) reserving line of business, partially offset by net favorable prior year loss reserve development within the specialty ($11.9 million) and casualty–runoff ($6.0 million) reserving lines of business. The net unfavorable prior year loss reserve development in the property and accident & health reserving line of business was driven primarily by Hurricane Ian, Winter Storm Elliott and a power outage claim. The net favorable prior year loss reserve development in the specialty and casualty-runoff reserving lines of business was driven primarily by positive claims experience within the 2021 and 2020 accident years.
During the year ended December 31, 2022, The Ark/WM Outrigger segment experienced $51.7 million of net favorable prior year loss reserve development. The net favorable prior year loss reserve development was driven primarily by the property and accident & health ($20.8 million), marine & energy ($18.8 million) and specialty ($12.7 million) reserving lines of business. The favorable prior year loss reserve development in the property and accident & health, marine & energy and specialty reserving lines of business was driven primarily by positive claims experience within the 2021 accident year.
During the year ended December 31, 2021, The Ark/WM Outrigger segment experienced $21.5 million of net favorable prior year loss reserve development. The net favorable prior year loss reserve development was driven primarily by the property and accident & health ($8.9 million), casualty-active ($3.7 million), specialty ($3.3 million) and casualty–runoff ($3.3 million) reserving lines of business. The favorable prior year loss reserve development in the property and accident & health reserving line of business was driven primarily by positive claims experience within the 2018 and 2019 accident years.
The following table summarizes the unpaid loss and LAE reserves, net of reinsurance recoverables on unpaid losses, for each of the Ark/WM Outrigger segment’s major reserving lines of business as of December 31, 2023 and 2022:

Year Ended December 31,


Millions
20232022
Property and Accident & Health$358.7 $258.2 
Specialty339.7 204.3 
Marine & Energy331.7 196.4 
Casualty-Active137.1 71.5 
Casualty-Runoff81.3 60.8 
WM Outrigger and Other15.8 .3 
   Unpaid loss and LAE reserves, net of reinsurance recoverables on unpaid losses1,264.3 791.5 
Plus: Reinsurance recoverables on unpaid losses (1)
Property and Accident & Health (2)
126.9 224.6 
Specialty77.6 97.2 
Marine & Energy59.1 79.8 
Casualty-Active74.8 49.9 
Casualty-Runoff2.4 53.5 
Total Reinsurance recoverables on unpaid losses (1) (2)
340.8 505.0 
Total unpaid loss and LAE reserves$1,605.1 $1,296.5 
(1) The reinsurance recoverables on unpaid losses include amounts attributable to TPC Providers of $0.0 and $145.4 as of December 31, 2023 and 2022.
(2) The reinsurance recoverables on unpaid losses exclude $15.6 ceded by Ark to WM Outrigger Re as of December 31, 2023, which eliminate in White Mountains’s consolidated financial statements.


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The following five tables cover each of Ark’s property and accident & health, specialty, marine & energy, casualty-active and casualty-runoff reserving lines of business and are presented net of reinsurance, which includes the impact of whole-account quota-share reinsurance arrangements related to TPC Providers. Through the annual RITC process, and in combination with the changing participation provided by TPC Providers, Ark’s participation on outstanding loss and LAE reserves on prior years of account can fluctuate. Depending on the change in the TPC Providers’ participation from one year of account to the next, the impact could be significant and is reflected in the tables on a retrospective basis by accident year. That is, for the RITC executed in the current year that changes Ark’s participation for claims relating to prior accident years, the prior year columns are adjusted to include the impact of the RITC. After 2023, Ark is no longer subject to changes in TPC Providers’ participation.
The following table summarizes the participation of Ark’s TPC Providers by year of account:

2014201520162017201820192020202120222023
TPC Providers’
   Participation
66.2 %70.0 %59.6 %60.0 %57.6 %58.3 %42.8 %— %— %— %

Each of the five tables includes three sections.
The top section of the table presents, for each of the previous 10 accident years: (1) cumulative total undiscounted incurred loss and LAE as of each of the previous 10 year-end evaluations, (2) total IBNR plus expected development on reported claims as of December 31, 2023 and (3) the cumulative number of reported claims as of December 31, 2023.
The middle section of the table presents cumulative paid loss and LAE for each of the previous 10 accident years as of each of the previous 10 year-end evaluations. Also included in this section is a calculation of the loss and LAE reserves as of December 31, 2023, which is then included in the reconciliation to the consolidated balance sheet presented above. The total unpaid loss and LAE reserves as of December 31, 2023 are calculated as the cumulative incurred loss and LAE from the top section less the cumulative paid loss and LAE from the middle section, plus any outstanding liabilities from accident years prior to 2014.
The bottom section of the table is supplementary information about the average historical claims duration as of December 31, 2023. It shows the weighted average annual percentage payout of incurred loss and LAE by accident year as of each age. For example, the first column is calculated as the incremental paid loss and LAE in the first calendar year for each given accident year (e.g. calendar year 2023 for accident year 2023, calendar year 2022 for accident year 2022) divided by the cumulative incurred loss and LAE as of December 31, 2023 for that accident year. The resulting ratios are weighted using cumulative incurred loss and LAE as of December 31, 2023.

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Property and Accident & Health
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2023
Accident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
Unaudited
2014$32.8 $29.5 $29.4 $28.7 $28.5 $28.6 $28.6 $28.6 $28.6 $28.5 $.1 2,924
201519.3 18.3 17.3 16.3 16.1 16.2 15.9 15.8 16.1 .2 2,829
201622.5 17.7 18.5 18.6 18.6 18.8 18.8 18.7 .2 3,428
201731.3 38.1 45.6 44.6 43.2 42.7 44.2 15.3 4,613
201841.0 47.4 49.3 47.0 47.1 46.7 1.9 4,269
201934.2 31.4 27.2 24.0 23.4 .8 4,011
202077.6 75.8 75.1 78.4 12.4 4,617
2021171.8 155.5 167.3 5.7 3,465
2022244.3 270.5 14.3 3,899
2023214.2 156.9 2,963
Total$908.0 
Property and Accident & Health
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Accident Year2014201520162017201820192020202120222023
Unaudited
2014$13.7 $25.1 $27.3 $27.6 $27.7 $27.9 $28.0 $28.0 $28.0 $28.0 
20156.9 12.3 13.5 14.7 14.7 14.9 15.1 15.1 15.5 
20168.6 13.2 16.5 16.9 17.0 17.3 17.9 18.1 
201716.9 26.0 31.8 33.0 29.8 27.5 25.7 
201815.7 32.4 40.3 40.3 41.1 43.1 
20196.8 16.8 18.5 18.6 19.4 
202011.3 34.3 47.3 56.1 
202130.9 87.1 131.3 
202270.9 193.9 
202320.1 
Total551.2 
All outstanding liabilities before 2014, net of reinsurance1.9 
Loss and LAE reserves, net of reinsurance$358.7 
Property and Accident & Health
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Unaudited
Years12345678910
25.8%35.5%20.1%6.1%1.3%1.1%0.4%0.3%0.1%—%

F - 40


Specialty
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2023
Accident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
Unaudited
2014$46.0 $44.2 $41.2 $40.8 $41.2 $43.8 $43.8 $43.7 $43.5 $43.5 $— 1,359
201517.4 14.8 12.4 10.8 11.1 11.3 11.3 9.0 8.2 (.1)1,841
201618.4 14.4 11.0 11.3 11.9 11.9 9.0 8.6 .1 1,932
201718.1 13.0 12.1 11.6 11.7 10.7 10.4 .1 2,191
201814.6 16.4 16.8 16.1 14.9 15.8 .4 2,117
201921.8 19.6 18.7 25.7 30.1 .2 2,368
202024.2 23.2 19.0 19.9 1.7 1,994
202171.2 62.6 51.7 16.4 1,696
2022181.1 176.6 97.2 1,407
2023215.6 151.6 1,258
Total$580.4 
Specialty
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Accident Year2014201520162017201820192020202120222023
Unaudited
2014$26.5 $39.3 $40.1 $40.5 $41.1 $42.4 $43.2 $43.1 $43.4 $43.7 
20154.0 7.1 7.7 8.1 8.1 8.2 8.2 6.5 6.3 
20163.2 8.0 9.1 9.9 10.4 10.4 8.6 8.4 
20173.2 6.7 8.5 8.6 8.6 9.3 9.1 
20182.8 8.3 10.1 10.5 11.9 13.1 
20194.9 7.0 7.5 18.3 25.2 
20205.3 10.7 13.2 18.3 
20215.1 24.1 35.7 
202216.0 62.1 
202318.8 
Total240.7 
All outstanding liabilities before 2014, net of reinsurance— 
Loss and LAE reserves, net of reinsurance$339.7 
Specialty
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Unaudited
Years12345678910
20.5%30.6%9.7%6.0%7.7%6.0%1.2%1.7%(3.1)%(0.5)%
F - 41


Marine & Energy
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2023
Accident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
Unaudited
2014$34.4 $20.2 $17.2 $16.3 $14.1 $13.7 $14.0 $13.8 $13.9 $13.6 $(.3)2,572 
201521.8 17.5 16.3 13.4 12.8 13.0 12.8 13.1 12.9 .1 3,242 
201623.6 19.7 15.8 14.7 14.4 15.0 14.2 13.8 .1 3,770 
201726.2 19.5 17.7 17.1 16.8 15.9 16.1 .3 4,133 
201825.8 20.3 17.8 18.1 17.7 18.1 .5 3,225 
201923.9 21.8 21.8 21.6 22.1 .9 2,366 
202030.0 27.3 28.7 27.6 1.6 1,561 
202186.8 69.8 67.7 9.3 1,461 
2022150.2 154.2 50.4 1,802 
2023197.8 154.8 1,539 
Total$543.9 
Marine & Energy
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Accident Year2014201520162017201820192020202120222023
Unaudited
2014$5.9 $12.3 $13.4 $14.2 $14.3 $13.6 $13.8 $13.6 $13.9 $13.8 
20154.0 7.9 9.7 11.1 10.5 10.6 11.0 11.6 11.7 
20165.6 10.1 12.7 13.1 13.3 13.9 13.6 13.6 
20175.1 11.2 12.9 14.2 14.2 14.2 14.1 
20182.7 12.7 14.3 15.0 15.6 15.6 
20193.4 10.7 12.7 14.5 15.5 
20203.2 12.8 16.2 18.7 
20216.3 24.5 38.5 
202212.3 66.4 
202310.6 
Total218.5 
All outstanding liabilities before 2013, net of reinsurance6.3 
Loss and LAE reserves, net of reinsurance$331.7 
Marine & Energy
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Unaudited
Years12345678910
14.2%34.9%19.4%6.1%4.3%6.5%0.3%0.3%(0.3)%0.1%

F - 42


Casualty-Active
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2023
Accident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
Unaudited
2014$13.3 $9.4 $8.4 $8.2 $8.1 $7.7 $7.8 $7.6 $7.8 $7.7 $.3 1,393 
20159.6 9.8 8.2 8.1 7.4 7.2 7.0 7.3 7.5 .4 1,295 
20168.8 8.3 8.9 9.0 9.1 9.2 9.2 10.1 .5 1,553 
201711.6 11.7 10.8 9.4 9.1 10.5 10.7 1.1 1,632 
201812.9 13.3 11.1 10.9 8.6 9.2 1.4 1,098 
201914.8 13.7 12.4 10.6 11.4 2.6 954 
202013.5 12.1 10.9 9.2 4.3 605 
202121.4 22.4 16.6 12.4 842 
202233.0 38.1 34.4 1,237 
202361.0 57.9 1,065 
Total$181.5 
Casualty-Active
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Accident Year2014201520162017201820192020202120222023
Unaudited
2014$1.3 $3.5 $4.2 $4.7 $5.2 $5.5 $5.9 $6.0 $6.2 $6.7 
20151.8 2.4 3.2 4.4 4.7 4.9 5.1 5.5 6.1 
2016.2 1.0 2.3 4.0 4.6 5.3 6.5 8.1 
2017.8 1.7 2.8 3.4 4.2 5.7 7.5 
2018.3 1.4 3.5 4.3 4.3 6.2 
2019.3 1.4 2.3 3.0 5.7 
2020.5 1.0 2.0 3.3 
2021.5 .9 3.1 
2022.4 1.6 
2023.9 
Total49.2 
All outstanding liabilities before 2014, net of reinsurance4.8 
Loss and LAE reserves, net of reinsurance$137.1 
Casualty-Active
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Unaudited
Years12345678910
4.8%8.8%14.2%11.3%8.8%10.9%6.1%4.6%2.0%3.2%

F - 43


Casualty-Runoff
$ in Millions
Incurred Loss and LAE, Net of Reinsurance
For the Years Ended December 31,As of December 31, 2023
Accident Year2014201520162017201820192020202120222023Total IBNR plus expected development on reported claimsCumulative number of reported claims
Unaudited
2014$49.2 $48.4 $51.0 $54.0 $57.6 $59.1 $59.1 $58.9 $58.7 $59.7 $1.9 1,947 
201536.7 32.1 33.3 36.8 36.5 37.5 36.8 39.3 40.3 2.0 2,000 
201632.6 32.2 40.4 38.6 38.8 38.6 37.7 37.5 2.3 2,158 
201730.6 34.0 31.4 32.1 31.6 29.9 28.3 2.9 1,603 
201833.7 28.2 27.3 26.6 26.2 28.0 4.1 1,277 
201926.6 23.3 23.4 24.9 23.6 5.8 971 
202015.9 12.3 13.9 10.9 3.9 566 
202110.5 7.0 5.5 3.0 282 
2022.8 2.6 1.8 77 
20232.7 1.6 40 
Total$239.1 
Casualty-Runoff
Millions
Cumulative Paid Loss and LAE, Net of Reinsurance
For the Years Ended December 31,
Accident Year2014201520162017201820192020202120222023
Unaudited
2014$6.5 $23.2 $29.6 $36.5 $43.2 $47.0 $48.7 $49.4 $51.9 $54.9 
20154.3 8.2 14.5 21.4 24.7 27.4 29.0 33.1 35.3 
20163.9 10.2 17.7 22.7 25.4 27.8 28.7 31.0 
20173.2 9.4 14.7 18.5 21.4 22.5 22.8 
20183.4 7.4 12.6 14.9 16.3 18.2 
20193.3 5.8 7.8 12.2 15.2 
2020.8 1.3 3.1 6.0 
2021.5 1.7 1.9 
2022.3 .5 
2023.9 
Total186.7 
All outstanding liabilities before 2014, net of reinsurance28.9 
Loss and LAE reserves, net of reinsurance$81.3 
Casualty-Runoff
Average Annual Percentage Payout of Incurred Losses and LAE by Age, Net of Reinsurance
Unaudited
Years12345678910
8.6%14.0%15.5%14.8%8.6%7.0%5.5%4.2%3.0%2.1%
F - 44


Note 6.  Third-Party Reinsurance

P&C Insurance and Reinsurance

In the normal course of business, Ark may seek to limit losses that arise from catastrophes or other events by reinsuring certain risks with third-party reinsurers. Ark remains liable for risks reinsured in the event that the reinsurer does not honor its obligations under reinsurance contracts. The following table summarizes the effects of reinsurance on written and earned premiums and on losses and LAE for the Ark/WM Outrigger segment for the years ended December 31, 2023, 2022 and 2021.
Year Ended December 31,
Millions202320222021
Written premiums:
Direct$931.9 $760.4 $619.5 
Assumed966.5 691.6 439.2 
Gross written premiums1,898.4 1,452.0 1,058.7 
Ceded(377.5)(1)(256.8)(199.6)
Net written premiums$1,520.9 $1,195.2 $859.1 
Earned premiums:
Direct$848.1 $655.5 $556.0 
Assumed925.6 668.7 330.4 
Gross earned premiums1,773.7 1,324.2 886.4 
Ceded(364.0)(2)(280.8)(249.1)
Net earned premiums$1,409.7 $1,043.4 $637.3 
Losses and LAE:
Gross$782.5 $814.9 $442.9 
Ceded(55.7)(3)(278.5)(128.1)
Net losses and LAE$726.8 $536.4 $314.8 
(1) The ceded written premiums exclude $110.0 ceded by Ark to WM Outrigger Re for the year ended December 31, 2023, which eliminate in White Mountains’s consolidated financial statements.
(2) The ceded earned premiums exclude $104.3 ceded by Ark to WM Outrigger Re for the year ended December 31, 2023, which eliminate in White Mountains’s consolidated financial statements.
(3) The ceded loss and LAE exclude $15.6 ceded by Ark to WM Outrigger Re for the year ended December 31, 2023, which eliminate in White Mountains’s consolidated financial statements.

The following table presents the Ark/WM Outrigger segment’s reinsurance recoverables as of December 31, 2023 and December 31, 2022:
MillionsDecember 31, 2023December 31, 2022
Reinsurance recoverables on unpaid losses$340.8 (1)$505.0 (3)
Reinsurance recoverables on paid losses27.4 31.1 
Ceded unearned premiums73.8 (2)59.2 
Reinsurance recoverables$442.0 $595.3 
(1) The reinsurance recoverables on unpaid losses exclude $15.6 ceded by Ark to WM Outrigger Re as of December 31, 2023, which eliminate in White Mountains’s consolidated financial statements.
(2) The ceded unearned premiums exclude $5.7 ceded by Ark to WM Outrigger Re as of December 31, 2023, which eliminate in White
Mountains’s consolidated financial statements.
(3) The reinsurance recoverables on unpaid losses include $145.4 attributable to TPC Providers as of December 31, 2022, which are collateralized.

F - 45


As reinsurance contracts do not relieve Ark of its obligation to its policyholders, Ark seeks to reduce the credit risk associated with reinsurance balances by avoiding over-reliance on specific reinsurers through the application of concentration limits and thresholds. Ark is selective with its reinsurers, placing reinsurance with only those reinsurers having a strong financial condition. Ark monitors the financial strength of its reinsurers on an ongoing basis.
The following table presents the Ark/WM Outrigger segment’s gross and net reinsurance recoverables by each reinsurer’s A.M. Best Company, Inc (“A.M. Best”) rating as of December 31, 2023:

$ in MillionsAs of December 31, 2023
A.M. Best Rating (1)
GrossCollateralNet% of Total
A+ or better$204.0 $— $204.0 71.0 %
A- to A
76.2— 76.226.5 
B++ or lower and not rated88.0(2)80.7(2)7.32.5 
Total$368.2 $80.7 $287.5 100.0 %
(1) A.M. Best ratings as detailed above are: “A+ or better” (Superior) “A- to A” (Excellent), “B++” (Good).
(2) Excludes $15.6 ceded by Ark to WM Outrigger Re as of December 31, 2023, which eliminates in White Mountains’s consolidated financial statements.

See Note 10 — “Municipal Bond Guarantee Insurance” for third-party reinsurance balances related to White Mountains’s financial guarantee business.

Reinsurance Contracts Accounted for as Deposits

Ark has an aggregate excess of loss contract with SiriusPoint, which is accounted for using the deposit method and recorded within other assets. Ark earns an annual crediting rate of 3.0%, which is recorded within other revenue. During 2021, Ark negotiated a reduction of $31.7 million, including accrued interest, to the aggregate excess of loss contract with SiriusPoint. As of December 31, 2021,2023 and December 31, 2022, the carrying value of Ark’s deposit in SiriusPoint, including accrued interest, was $20.4 million.
See Note 10 — “Municipal Bond Guarantee Insurance” for reinsurance contracts accounted for as deposits related to White Mountains’s financial guarantee business.

F - 47


Note 7. Debt

The following table presents White Mountains’s debt outstanding as of December 31, 20212023 and 2020:2022:
December 31,Effective (1)December 31,Effective (1)
December 31,December 31,EffectiveDecember 31,Effective
$ in Millions$ in Millions2021Rate2020
Rate (1)
$ in Millions2023
Rate (1)
2022
Rate (1)
Ark 2007 Notes Tranche 1$30.0 $— 
Ark 2007 Notes Tranche 2  
HG Global Senior Notes (2)
HG Global Senior Notes (2)
HG Global Senior Notes (2)
$150.0 11.9%$150.0 8.9%
Unamortized discount and issuance cost
HG Global Senior Notes, carrying value
HG Global Senior Notes, carrying value
HG Global Senior Notes, carrying value
Ark 2007 Subordinated Notes, carrying valueArk 2007 Subordinated Notes, carrying value30.0 — 
Ark 2021 Notes Tranche 144.2 — 
Ark 2021 Notes Tranche 247.0 — 
Ark 2021 Notes Tranche 370.0 — 
Ark 2007 Subordinated Notes, carrying value
Ark 2007 Subordinated Notes, carrying value
Ark 2021 Subordinated Notes Tranche 1
Ark 2021 Subordinated Notes Tranche 1
Ark 2021 Subordinated Notes Tranche 1
Ark 2021 Subordinated Notes Tranche 2
Ark 2021 Subordinated Notes Tranche 2
Ark 2021 Subordinated Notes Tranche 2
Ark 2021 Subordinated Notes Tranche 3
Ark 2021 Subordinated Notes Tranche 3
Ark 2021 Subordinated Notes Tranche 3
Unamortized issuance cost
Unamortized issuance cost
Unamortized issuance costUnamortized issuance cost(5.3) 
Ark 2021 Subordinated Notes, carrying valueArk 2021 Subordinated Notes, carrying value155.9  
Ark 2021 Subordinated Notes, carrying value
Ark 2021 Subordinated Notes, carrying value
Total Ark Subordinated Notes, carrying valueTotal Ark Subordinated Notes, carrying value185.9 6.9% 
NSM Bank Facility277.6 7.3% (2)277.4 7.5%(2)
Unamortized issuance cost(6.4)(6.1)
NSM Bank Facility, carrying value271.2 271.3 
Other NSM debt.9 2.9%1.3 2.5%
Total Ark Subordinated Notes, carrying value
Total Ark Subordinated Notes, carrying value185.5 11.0%183.7 7.6%
Kudu Credit Facility
Kudu Credit Facility
Kudu Credit FacilityKudu Credit Facility225.4 4.3%— 210.3 10.1%10.1%215.2 6.1%6.1%
Unamortized issuance costUnamortized issuance cost(7.2)— 
Kudu Credit Facility, carrying valueKudu Credit Facility, carrying value218.2 — 
Kudu Bank Facility 89.2 8.3%
Unamortized issuance cost (2.9)
Kudu Bank Facility, carrying value 86.3 
Kudu Credit Facility, carrying value
Kudu Credit Facility, carrying value
Other Operations debt
Other Operations debt
Other Operations debtOther Operations debt17.1 7.5%18.0 7.4%28.9 10.2%10.2%37.4 6.6%6.6%
Unamortized issuance costUnamortized issuance cost(.3)(.5)
Other Operations debt, carrying valueOther Operations debt, carrying value16.8 17.5 
Other Operations debt, carrying value
Other Operations debt, carrying value
Total debt
Total debt
Total debt Total debt$693.0 $376.4 
(1) Effective rate includes the effect of the amortization of debt issuance costs.costs and, where applicable, the original issue discount.
(2) NSM’s effectiveEffective rate excludes the effect of the interest rate swap on the hedged portion of the debt. The weighted average interest rate for the years ended December 31, 2021 and 2020, excluding the effect of the amortization of debt issuance costs, was 6.5% and 7.0%. The weighted average interest rate for the years ended December 31, 2021 and 2020 on the total NSM Bank Facility including both the effect of the amortization of debt issuance costs and the effect of the interest rate swap and interest rate cap was 8.2% and 8.4%.cap.
F - 46


The following table presents a schedule of contractual repayments of White Mountains’s debt as of December 31, 2021:2023:
MillionsDecember 31, 20212023
Due in one year or less$5.73.3 
Due in two to three years14.511.2 
Due in four to five years221.640.6 
Due after five years470.4523.8 
Total$712.2578.9 

F - 48HG Global Senior Notes


On April 29, 2022, HG Global received the proceeds from the issuance of its $150.0 million face value floating rate secured senior notes (the “HG Global Senior Notes”). The HG Global Senior Notes, which mature in April 2032, accrue interest at a floating rate equal to the three-month Secured Overnight Financing Rate (“SOFR”) plus a credit adjustment spread of 0.26% and a stated margin of 6.0% per annum. Subsequent to the five-year anniversary of the funding date, absent the occurrence of an early amortization trigger event, HG Global will be required to make payments of principal on a quarterly basis totaling $15.0 million annually. Upon the occurrence of an early amortization trigger event, HG Global is required to use all available cash flow to repay the notes. Early amortization trigger events include scenarios in which HG Re is effectively in runoff. HG Global has the option to redeem, in whole or in part, the HG Global Senior Notes after the five-year anniversary of the funding date at the outstanding principal amount plus accrued interest.
On June 16, 2022, HG Global entered into an interest rate cap agreement, effective on July 25, 2022, to limit its exposure to the risk of interest rate increases on the HG Global Senior Notes. The notional amount of the interest rate cap is $150.0 million and the termination date is July 25, 2025. See Note 9 “Derivatives.”
The HG Global Senior Notes require HG Global to maintain an interest reserve account of eight times the interest accrued for the most recent quarterly interest period. While the interest rate cap is in force, the interest reserve account is subject to a maximum required balance of $29.3 million. As of December 31, 2023, the fair value of the interest reserve account, which is included in short-term investments, was $30.4 million.
The HG Global Senior Notes are secured by the capital stock and other equity interests of HG Global’s subsidiaries, the interest reserve account, and all cash and non-cash proceeds from such collateral. The HG Global Senior Notes contain various affirmative and negative covenants that White Mountains considers to be customary for such borrowings.
If the payment of principal and interest under the HG Global Senior Notes becomes subject to tax withholding on behalf of a relevant governmental authority for certain indemnified taxes, the HG Global Senior Notes require the payment of additional amounts such that the amount received by the noteholders is the same as would have been received absent the tax withholding being imposed. The HG Global Senior Notes require the payment of additional interest of 1.0% per annum if the HG Global Senior Notes receive a non-investment grade rating or are no longer rated. As of December 31, 2023, the HG Global Senior Notes had an investment grade rating.
As of December 31, 2023, the HG Global Senior Notes had an outstanding balance of $150.0 million.

Ark Subordinated Notes

In March 2007, GAIL issued $30.0 million face value of floating rate unsecured junior subordinated deferrable interest notes to Alesco Preferred Funding XII Ltd., Alesco Preferred Funding XIII Ltd. and Alesco Preferred Funding XIV Ltd (the “Ark 2007 Notes Tranche 1”) and a €12.0 million floating rate subordinated note to Dekania Europe CDO II plc (the “Ark 2007 Notes Tranche 2”) (together, the “Ark 2007 Subordinated Notes”). The Ark 2007 Subordinated Notes, Tranche 1, which mature in June 2037, accrueaccrued interest at a floating rate equal to the three-month U.S. LIBORLondon Interbank Offered Rate (“LIBOR”) plus 4.6%. The per annum until September 2023. Effective September 2023, the Ark 2007 Subordinated Notes Tranche 2, which matures in June 2027, accruesaccrue interest ata a floating rate equal to the three-month EURIBORSOFR plus 4.6%. During 2021, Ark repaid €12.0 million ($13.5 million based upon the foreign exchange spot rate at the datea credit adjustment spread of repayment)0.26% and a stated margin of the outstanding principal balance on the Ark 2007 Notes Tranche 2.4.6% per annum. As of December 31, 2021,2023, the Ark 2007 Subordinated Notes Tranche 1 had an outstanding balance of $30.0 million. In January 2024, Ark provided notice to the lenders that it intends to redeem the Ark 2007 Subordinated Notes in full on March 15, 2024.
In the third quarter of 2021, GAIL issued $163.3 million face value floating rate unsecured subordinated notes at par in three separate transactions for proceeds of $157.8 million, net of debt issuance costs. The unsecured subordinated notes (the “ArkThese Ark 2021 Subordinated Notes”)Notes were issued in private placement offerings that were exempt from the registration requirements of the Securities Act of 1933.
On July 13, 2021, Ark issued €39.1 million ($46.3 million based upon the foreign exchange spot rate as of the date of the transaction) face value floating rate unsecured subordinated notes (“Ark 2021 Subordinated Notes Tranche 1”). The Ark 2021 Subordinated Notes Tranche 1, which mature in July 2041, accrue interest at a floating rate equal to the three-month EURIBOREuro Interbank Offered Rate (EURIBOR) plus 5.75%. per annum.
F - 47


On August 11, 2021, Ark issued $47.0 million face value floating rate unsecured subordinated notes (“Ark 2021 Subordinated Notes Tranche 2”). The Ark 2021 Subordinated Notes Tranche 2, which mature in August 2041, accrueaccrued interest at a floating rate equal to the three-month U.S. LIBOR plus 5.75%. per annum until August 2023. Effective August 2023, the Ark 2021 Subordinated Notes Tranche 2 accrue interest at a floating rate equal to the three-month SOFR plus a credit adjustment spread of 0.26% and a stated margin of 5.75% per annum.
On September 8, 2021, Ark issued $70.0 million face value floating rate unsecured subordinated notes (“Ark 2021 Subordinated Notes Tranche 3”). The Ark 2021 Subordinated Notes Tranche 3, which mature in September 2041, accrueaccrued interest at a floating rate equal to the three-month U.S. LIBOR plus 6.1%. per annum until September 2023. Effective September 2023, the Ark 2021 Subordinated Notes Tranche 3 accrue interest at a floating rate equal to the three-month SOFR plus a credit adjustment spread of 0.26% and a stated margin of 6.1% per annum.
On the ten-year anniversary of the issue dates, the interest rate for the Ark 2021 Subordinated Notes will increase by 1.0% per annum. Ark has the option to redeem, in whole or in part, the Ark 2021 Subordinated Notes ahead of contractual maturity at the outstanding principal amounts plus accrued interest at the ten-year anniversary or any subsequent interest payment date.
All payments of principal and interest under the Ark 2021 Subordinated Notes are conditional upon GAIL’s solvency and compliance with the enhanced capital requirements of the Bermuda Monetary Authority (“BMA”). The deferral of payments of principal and interest under these conditions does not constitute a default by Ark and does not give the noteholders any rights to accelerate repayment of the Ark 2021 Subordinated Notes or take any enforcement action under the Ark 2021 Subordinated Notes.
If the payments of principal and interest under the Ark 2021 Subordinated Notes become subject to tax withholding on behalf of Bermuda or any political subdivision there, the Ark 2021 Subordinated Notes require the payment of additional amounts such that the amount received by the noteholders is the same as would have been received absent the tax withholding being imposed. The Ark 2021 Subordinated Notes Tranche 3 require the payment of additional interest of 1.0% per annum upon the occurrence of a Premium Load Eventpremium load event until such event is remedied. Premium Load Eventsload events include the failure to meet payment obligations of the Ark 2021 Subordinated Notes Tranche 3 when due, failure of GAIL to maintain an investment grade credit rating, failure of GAIL to maintain 120% of GAIL’sits Bermuda solvency capital requirement, failure of GAIL to maintain a debt to capital ratio below 40%, late filing of GAIL’s or Ark’s financial information and making a restricted payment or distribution on GAIL’s common stock or other securities that rank junior or pari passu with the Ark 2021 Subordinated Notes Tranche 3 when a different Premium Load Eventpremium load event exists or will be caused by the restricted payment. As of December 31, 2023, there were no premium load events.
As of December 31, 2021,2023, the Ark 2021 Subordinated Notes Tranche 1 had an outstanding balance of €39.1 million ($44.242.7 million based upon the foreign exchange spot rate as of December 31, 2021)2023), the Ark 2021 Subordinated Notes Tranche 2 had an outstanding balance of $47.0 million and the Ark 2021 Subordinated Notes Tranche 3 had an outstanding balance of $70.0 million.
The Ark Subordinated Notes contain various affirmative and negative covenants that White Mountains considers to be customary for such borrowings.

Ark Stand ByStandby Letter of Credit Facilities

In December 2021, Ark entered into two uncommitted secured stand bystandby letter of credit facility agreements to support the continued growth and expansion of its GAILGAIL’s insurance and reinsurance operations. The stand bystandby letter of credit facility agreements were executed with ING Bank N.V., London Branch (the “ING LOC Facility”), with capacity of $50.0 million on an uncollateralized basis, and with Citibank Europe Plc (the “Citibank LOC Facility”), with capacity of $125.0 million on a collateralized basis. In September 2022, Ark entered into an additional uncommitted standby letter of credit facility agreement with Lloyds Bank Corporate Markets PLC (the “Lloyds LOC Facility”), with capacity of $100.0 million on a collateralized basis.
As of December 31, 2021, $50.0 million of short-term investments were pledged as collateral under2023, the CitibankING LOC Facility.Facility was undrawn. As of December 31, 2021, the ING LOC Facility and2023, the Citibank LOC Facility were undrawn.had an outstanding balance of $106.5 million and short-term investments pledged as collateral of $134.8 million. As of December 31, 2023, the Lloyds LOC Facility had an outstanding balance of $28.6 million and short-term investments pledged as collateral of $64.1 million. Ark’s uncommitted secured stand bystandby letter of credit facility agreements contain various representations, warranties and covenants that White Mountains considers to be customary for such borrowings.


F - 4948


NSM Bank Facility

NSM maintains a secured credit facility (the “NSM Bank Facility”) with Ares Capital Corporation. In both 2021 and 2020, NSM amended the terms of the facility. On April 7, 2020, NSM amended the NSM Bank Facility to increase the total commitment from $234.0 million, comprised of term loans of $224.0 million and a revolving credit loan of $10.0 million, to $291.4 million, comprised of term loans of $276.4 million, including £42.5 million ($52.4 million based upon the foreign exchange spot rate as of the date of the transaction) in a GBP term loan, and a revolving credit loan commitment of $15.0 million. In connection with the April 7, 2020 amendment, the reference rates for USD denominated borrowings increased. The USD-LIBOR rate floor increased to 1.25% and the margin over USD-LIBOR increased from a range of 4.25% to 4.75% to a range of 5.50% to 6.00%.
On June 2, 2021, NSM amended the NSM Bank Facility to reduce the margin over the reference interest rate for USD LIBOR loans from a range of 5.50% to 6.00% to a range of 4.50% to 5.00%, and reduce the margin over the reference rate for GBP loans from a range of 6.00% to 6.50% to a range of 5.00% to 5.50%. The amendment also increased the revolving credit loan commitment to $40.0 million and added a $50.0 million delayed-draw term loan commitment. The amendment also changed the reference interest rate for the GBP loan from GBP-LIBOR to SONIA. The maturity dates of the term loans and the revolving credit loans were not changed as part of the amendment. The term loans under the NSM Bank Facility mature on May 11, 2026, and the revolving loan matures on November 11, 2025. The reference interest rates under the NSM Bank Facility are generally subject to a 1.25% rate floor.
Under GAAP, if the terms of a debt instrument are amended, unless there is greater than 10% change in the expected discounted future cash flows of such instrument, the instrument’s carrying value does not change. White Mountains has determined that the impact of the 2021 and 2020 amendments to the NSM Bank Facility was less than 10% on the expected discounted future cash flows.
The following table presents the change in debt under the NSM Bank Facility for the years ended December 31, 2021, 2020 and 2019:
MillionsYear Ended December 31,
NSM Bank Facility202120202019
Beginning balance$277.4 $221.3 $180.4 
Term loans
Borrowings (1)
 52.4 42.9 
Repayments(2.8)(2.0)(2.0)
Foreign currency translation(.5)5.7 — 
Revolving credit loan
Borrowings (2)
35.0 — 6.5 
Repayments(31.5)— (6.5)
Ending balance$277.6 $277.4 $221.3 
(1) Borrowings for the year ended December 31, 2020 included $52.4 for the funding of the acquisition of Kingsbridge. Borrowings for the year ended December 31, 2019 included $20.4 and $22.5 for the funding of the acquisitions of Embrace and the Renewal Rights.
(2) Borrowings for the year ended December 31, 2021 included $35.0 for the funding of the acquisition of J.C. Taylor.

As of December 31, 2021, the term loans had an outstanding balance of $274.1 million, including £41.9 million ($56.7 million based upon the foreign exchange spot rate as of December 31, 2021) in a GBP term loan, and the revolving credit loan had an outstanding balance of $3.5 million.
On June 15, 2018, NSM entered into an interest rate swap agreement to hedge its exposure to interest rate risk on $151.0 million of its USD denominated variable rate term loans.
As of December 31, 2021, $146.1 million of the outstanding term loans were hedged by the swap and $128.0 million of the outstanding term loans were unhedged.
F - 50


The following table presents the NSM weighted average interest rate for the year ended December 31, 2021 and 2020:

NSM Weighted Average Interest RateYear Ended December 31,
20212020
MillionsWeighted Average
Interest Expense (1)
Weighted Average Interest rateWeighted Average
Interest Expense (1)
Weighted Average Interest rate
Term loan - hedged$146.9 $13.2 9.0 %$148.4 $13.4 9.0 %
Term loan - unhedged129.19.47.3 %125.88.66.8 %
Total NSM Facility$276.0 $22.6 8.2 %$274.2 $22.0 8.0 %
(1) Interest expense includes the amortization of debt issuance costs and the effect of the interest rate swap and interest rate cap and excludes $0.7 and $0.1, for the year ended December 31, 2021 and 2020, of interest expense related to the revolving credit loanand Other NSM Debt.

The NSM Bank Facility is secured by all property of the loan parties and contains various affirmative, negative and financial covenants that White Mountains considers to be customary for such borrowings, including a maximum consolidated total leverage ratio covenant.

Other NSM Debt

NSM also has a secured term loan related to its U.K. vertical. As of December 31, 2021, the secured term loan had an outstanding balance of $1.0 million and a maturity date of December 31, 2022.

Kudu Credit Facility and Kudu Bank Facility

On December 23, 2019, Kudu entered into a secured credit facility with Monroe Capital Management Advisors, LLC (the “Kudu Bank Facility”). On March 23, 2021, Kudu replaced the Kudu Bank Facility and entered into a secured revolving credit facility (the “Kudu Credit Facility”) with MassachusettsMass Mutual Life Insurance Company to repay the Kudu Bank Facility,its prior credit facility and to fund new investments and related transaction expenses. The maximum borrowing capacity of the Kudu Credit Facility is $300.0 million. The Kudu Credit Facility matures on March 23, 2036. In connection with the replacement of the Kudu Bank Facility, Kudu recognized a total loss of $4.1 million, representing debt issuance costs and prepayment fees, which are included within
Through June 2023, interest expense for the period ended December 31, 2021.
Interest on the Kudu BankCredit Facility accruesaccrued at a floating interest rate equal to the greater of the one-month USD-LIBOR andthree-month LIBOR or 0.25%, plus in each case, 4.30%. Effective July 2023, the applicableKudu Credit Facility accrue interest at a floating interest rate equal to the three-month SOFR plus a credit adjustment spread of 0.26% and a stated margin of 4.30%. The Kudu Credit Facility requires Kudu to maintain an interest reserve account, which is included in restricted cash.account. As of December 31, 2021,2023, the interest reserve account of $14.9 million was $4.5 million.held in short term investments. As of December 31, 2022, the interest reserve account of $12.2 million was held in restricted cash. The Kudu Credit Facility requires Kudu to maintain a ratio of the outstanding balance to the sum of the fair market value of participation contractsKudu’s Participation Contracts and cash held in certain accounts (the “LTV Percentage”) of less than 50% in years 0-3, 40% in years 4-6, 25% in years 7-8, 15% in years 9-10 and 0% thereafter. As of December 31, 2021,2023, Kudu hashad a 34%25% LTV Percentage.
Kudu may borrow undrawn balances within the initial three-year availability period, subject to customary terms and conditions, to the extent the amount borrowed under the Kudu Credit Facility does not exceed the borrowing base, which is equal to 35% of the fair value of Kudu’s qualifying Kudu Participation Contracts. When considering the fair value of Kudu’s qualifying Kudu Participation Contracts as of December 31, 2021,2023, the available undrawn balance was $8.9$89.7 million.
F - 51


The following table presents the change in debt under the Kudu Bank Facility and Kudu Credit Facility for the years ended December 31, 2021, 20202023, 2022 and 2019:2021:
Year Ended December 31,Year Ended December 31,
MillionsMillions202320222021
Year Ended December 31,
Millions202120202019
Kudu Bank Facility
Kudu Credit Facility
Kudu Credit Facility
Kudu Credit Facility
Beginning balance
Beginning balance
Beginning balanceBeginning balance$89.2 $57.0 $— 
Term loansTerm loans
BorrowingsBorrowings3.0 32.2 57.0 
Repayments(92.2)— — 
Ending balance$ $89.2 $57.0 
Kudu Credit Facility
Beginning balance$ $— $— 
Term loans
Borrowings
BorrowingsBorrowings232.0 — — 
RepaymentsRepayments(6.6)— — 
Ending balanceEnding balance$225.4 $— $— 

The Kudu Credit Facility is secured by all property of the loan parties and contains various affirmative and negative covenants that White Mountains considers to be customary for such borrowings.

Other Operations Debt

As of December 31, 2021, debt in2023, White Mountains’s Other Operations segmenthad debt with an outstanding balance of $28.9 million, which consisted of 3four secured credit facilities (collectively, “Other Operations Debt”debt”).
The first credit facility has a maximum borrowing capacity of $16.3 million, which is comprised of a term loan of $11.3 million, a delayed-draw term loan of $3.0 million and a revolving credit loan commitment of $2.0 million, all with a maturity date of March 12, 2024. The second credit facility has a maximum borrowing capacity of $15.0 million, which is comprised of a term loan of $9.0 million, a delayed-draw term loan of $4.0 million and a revolving credit loan commitment of $2.0 million, all with a maturity date of July 2, 2025. The third credit facility has a maximum borrowing capacity of $8.0 million, which is comprised of a revolving credit loan commitment, with a maturity date of December 9, 2026.
For the year ended December 31, 2021, White Mountains’s Other Operations segment borrowed $3.4 million and had no borrowings in 2020 or 2019. For the year ended December 31, 2021, 2020 and 2019, White Mountains’s Other Operations segment made repayments of $7.7 million, $2.1 million and $0.2 million. As of December 31, 2021 and 2020, the Other Operations Debt had an outstanding balance of $17.1 million and $18.0 million.

Compliance

As of December 31, 2021,2023, White Mountains was in compliance, in all material respects, with all of the covenants under all of its debt facilities.instruments.

Interest

Total interest expense incurred by White Mountains for its indebtedness was $43.8$62.7 million, $29.5$40.3 million and $17.6$20.5 million for the years ended December 31, 2021, 20202023, 2022 and 2019.2021. Total interest paid by White Mountains for its indebtedness was $35.8$42.2 million, $27.0$30.5 million and $16.3$13.9 million for the years ended December 31, 2021, 20202023, 2022 and 2019.2021.

F - 5249


Note 8. Income Taxes

The Company and its Bermuda-domiciled subsidiaries arewere not subject to Bermuda income tax under currentin Bermuda law. Inin 2023 and prior years. On December 27, 2023, Bermuda enacted a 15% corporate income tax that will generally become effective on January 1, 2025. The Bermuda legislation defers the event there is a changeeffective date for five years for Bermuda companies in consolidated groups that meet certain requirements. White Mountains expects to meet the current law such that taxes are imposed, the Bermuda Exempted Undertakings Tax Protection Act of 1966 states that the Company and its Bermuda-domiciled subsidiaries wouldrequirements to be exempt from suchthe Bermuda corporate income tax until MarchJanuary 1, 2030. The Bermuda legislation also provides for an economic transition adjustment that will reduce future years’ taxable income. Under GAAP, this economic transition adjustment was required to be recognized as a net deferred tax asset as of December 31, 2035. 2023. Accordingly, White Mountains’s net income for 2023 included a net deferred tax benefit of $68 million, of which $51 million was recorded at Ark and $17 million was recorded at HG Global.
The Company has subsidiaries and branches that operate in various other jurisdictions around the world and are subject to tax in the jurisdictions in which they operate. As of December 31, 2021,2023, the primary jurisdictions in which the Company’s subsidiaries and branches operate and were subject to tax were Ireland,include Israel, Luxembourg, the United Kingdom and the United States.
The following table presents the total income tax (expense) benefit for the years ended December 31, 2021, 20202023, 2022 and 2019:2021:
Year Ended December 31,
Year Ended December 31,Year Ended December 31,
MillionsMillions202120202019Millions202320222021
Current income tax (expense) benefit:Current income tax (expense) benefit:   Current income tax (expense) benefit: 
U.S. federalU.S. federal$(3.8)$(10.4)$.9 
StateState(2.1)(4.2)(3.7)
Non-U.S.Non-U.S.(3.9)(1.1)(1.7)
Total current income tax (expense) benefitTotal current income tax (expense) benefit(9.8)(15.7)(4.5)
Deferred income tax (expense) benefit:Deferred income tax (expense) benefit: 
U.S. federalU.S. federal(4.9)23.2 (14.9)
U.S. federal
U.S. federal
StateState(5.6)10.3 (10.4)
Non-U.S.Non-U.S.(18.3)2.7 .5 
Total deferred income tax (expense) benefitTotal deferred income tax (expense) benefit(28.8)36.2 (24.8)
Total income tax (expense) benefitTotal income tax (expense) benefit$(38.6)$20.5 $(29.3)

Effective Rate Reconciliation

The following table presents a reconciliation of taxes calculated for 2021, 20202023, 2022 and 20192021 using the 21% U.S. federal statutory rate U.S. federal statutory rate (the tax rate at which the majority of White Mountains’s worldwide operations are taxed) to the income tax (expense) benefit on pre-tax income (loss):
Year Ended December 31,
Year Ended December 31,Year Ended December 31,
MillionsMillions202120202019Millions202320222021
Tax (expense) benefit at the U.S. statutory rateTax (expense) benefit at the U.S. statutory rate$63.4 $(135.5)$(85.1)
Differences in taxes resulting from:Differences in taxes resulting from:   Differences in taxes resulting from:  
Non-U.S. earnings, net of foreign taxesNon-U.S. earnings, net of foreign taxes(77.2)78.4 27.1 
Bermuda corporate income tax
Change in valuation allowance
State taxes
Noncontrolling interest
Member’s surplus contributions
Withholding tax
Tax rate changesTax rate changes(11.2)2.7 (5.7)
State taxes(6.2)(8.5)(17.5)
Member’s surplus contributions(5.6)(4.8)(3.6)
Change in valuation allowance(2.4)(29.2)63.6 
Officer compensation
Officer compensation(1.5)(1.1)— 
Withholding tax(.3)(5.0)(1.6)
Tax exempt interest and dividendsTax exempt interest and dividends.2 .8 1.1 
Reorganization 130.5 — 
Tax reserve adjustments 1.9 (.7)
Tax exempt interest and dividends
Tax exempt interest and dividends
Other, net
Other, net
Other, netOther, net2.2 (9.7)(6.9)
Total income tax (expense) benefit on pre-tax income (loss)Total income tax (expense) benefit on pre-tax income (loss)$(38.6)$20.5 $(29.3)
Total income tax (expense) benefit on pre-tax income (loss)
Total income tax (expense) benefit on pre-tax income (loss)

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The non-U.S. component of pre-tax income (loss) income was $(319.0)$450.0 million, $327.8$(94.4) million and $100.4$(319.0) million for the years ended December 31, 2023, 2022 and 2021. On June 10, 2021, 2020 and 2019. The reorganization benefit resultedthe U.K. enacted an increase in its corporate tax rate from the release of a19% to 25% for periods after April 1, 2023. During 2021, White Mountains increased its net U.K. deferred tax liability following an internal reorganization completed in connection withto reflect the MediaAlpha IPO.higher tax rate.

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Tax Payments and Receipts

Net income tax (refunds) payments totaled $(0.1)$42.7 million, $16.2$10.3 million and $3.7$(0.1) million for the years ended December 31, 2021, 20202023, 2022 and 2019.2021.

Deferred Tax Assets and Liabilities

Deferred taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts for tax purposes.
The following table presents an outline of the significant components of White Mountains’s U.S. federal, state and non-U.S. deferred tax assets and liabilities:
December 31,
December 31,December 31,
MillionsMillions20212020Millions20232022
Deferred tax assets related to:Deferred tax assets related to:  Deferred tax assets related to: 
U.S. federal and state net operating and capital
loss carryforwards
U.S. federal and state net operating and capital
loss carryforwards
$102.8 $79.6 
Non-U.S. net operating loss carryforwardsNon-U.S. net operating loss carryforwards47.1 50.5 
Intangible assets
Incentive compensationIncentive compensation14.6 17.5 
Unearned premiums
Accrued interest
Loss reserves
Deferred acquisition costs
Tax credit carryforwards
Net unrealized investment losses
Accrued interest10.8 7.9 
Deferred acquisition costs6.4 5.5 
Tax credit carryforwards4.9 5.5 
Other items
Other items
Other itemsOther items.7 1.3 
Total gross deferred tax assetsTotal gross deferred tax assets187.3 167.8 
Less: valuation allowancesLess: valuation allowances92.3 97.4 
Total net deferred tax assetsTotal net deferred tax assets95.0 70.4 
Deferred tax liabilities related to:Deferred tax liabilities related to:  Deferred tax liabilities related to:  
Member’s surplus contributionsMember’s surplus contributions60.4 52.9 
Member’s surplus contributions
Member’s surplus contributions
Purchase accountingPurchase accounting48.5 5.1 
Investment basis differenceInvestment basis difference33.7 11.8 
Deferred underwriting
Deferred underwriting
Deferred underwriting
Net unrealized investment gains (losses)Net unrealized investment gains (losses)10.7 .3 
Deferred underwriting4.1— 
Other items
Other items
Other itemsOther items2.7 2.8 
Total deferred tax liabilitiesTotal deferred tax liabilities160.1 72.9 
Net deferred tax asset (liability)Net deferred tax asset (liability)$(65.1)$(2.5)

White Mountains’s deferred tax assets (liabilities) are net of U.S. federal, state and non-U.S. valuation allowances and, to the extent they relate to non-U.S. jurisdictions, they are shown at year-end exchange rates.

Valuation Allowance

White Mountains records a valuation allowance against deferred tax assets if it becomes more likely than not that all or a portion of a deferred tax asset will not be realized. Changes in valuation allowances from period to period are included in income tax expense in the period of change. In determining whether or not a valuation allowance, or change therein, is warranted, White Mountains considers factors such as prior earnings history, expected future earnings, carryback and carryforward periods and strategies that if executed would result in the realization of a deferred tax asset.  It is possible that certain planning strategies or projected earnings in certain subsidiaries may not be sufficient to utilize the entire deferred tax asset, which could result in material changes to White Mountains’s deferred tax assets and tax expense.
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Of the $92.3$116.1 million valuation allowance as of December 31, 2021, $42.92023, $47.6 million related to deferred tax assets on net operating losses and net unrealized investment gains and losses in Luxembourg subsidiaries, $46.9 million related to deferred tax assets on net operating losses in U.S. subsidiaries and other federal and state deferred tax benefits, $25.2 million related to deferred tax assets on net operating losses and net investment unrealized gains and losses in Luxembourg subsidiaries, $21.9$20.8 million related to net operating losses and other deferred tax benefits in Israeli subsidiaries and $2.3$0.8 million related to net operating losses and other deferred tax benefits in U.K. subsidiaries. Of the $97.4$94.3 million valuation allowance as of December 31, 2020, $46.52022, $56.6 million related to deferred tax assets on net operating losses in U.S. subsidiaries and other federal and state deferred tax benefits, $26.8$20.4 million related to net operating losses and other deferred tax benefits in Israeli subsidiaries, $16.0 million related to deferred tax assets on net operating losses and net investment unrealized gains and losses in Luxembourg subsidiaries $20.0and $1.3 million related to net operating losses and other deferred tax benefits in Israeli subsidiaries and $4.1 million related to net operating losses and other deferred tax benefits in U.K. subsidiaries.
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United States
During 2021,2023, White Mountains recorded income tax benefit of $3.6$7.2 million to reflect the decrease in the valuation allowance on the net deferred tax assets infor certain U.S. operations consistingwithin Other Operations. The decrease is due to realized gains during the year which reduced the company’s net operating loss carryforward and related deferred tax asset. As the deferred tax asset declined so did the corresponding valuation allowance. As of the WM Adams Holdings, Inc. (“WM Adams”) consolidated tax group included within the Other Operations segment, asDecember 31, 2023, White Mountains management does not currently anticipate sufficient taxable income to utilize the remaining deferred tax assets. WM Adams includes WM Lincoln Holdings Inc. (“WM Lincoln”), WM Capital, WM Advisors and certain other entities and investments that are included in the Other Operations segment.
During 2020, White Mountains recorded income tax expense of $14.9 million to establish a full valuation allowance on the deferred tax assets in certain U.S. operations, consisting of the WM Lincoln consolidated tax group included within the Other Operations segment, as White Mountains management did not currently anticipate sufficient taxable income to utilize the deferred tax assets. WM Lincoln includes WM Capital, WM Advisors and certain other entities and investments that are included in the Other Operations segment.
During 2021 and 2020,2022, White Mountains recorded income tax expense of $7.8 million to reflect the increase in the valuation allowance on the net deferred tax assets for certain U.S. operations within Other Operations, as White Mountains management did not anticipate sufficient taxable income to utilize the remaining deferred tax assets.
During 2023 and $4.52022, White Mountains recorded income tax expense of $6.3 million and $17.5 million to reflect the increase in the valuation allowance on net deferred tax assets of BAM. On January 1, 2020, White Mountains adopted ASU 2019-12. For periods subsequent to the adoption of ASU 2019-12, White Mountains records both the tax expense related to BAM’s MSCmember surplus contributions (“MSC”) and the related changes in valuation allowance on such taxes directly through non-controllingnoncontrolling interest equity. Prior to the adoption of ASU 2019-12, White Mountains recorded the tax expense related to BAM’s MSC to non-controlling interest equity, while the change in valuation allowance on such taxes was recorded through the income statement. During 20212023 and 2020,2022, BAM had income included in equity due to MSC that was available to offset its loss from continuing operations. In 20212023 and 2020, based on the adoption of ASU 2019-12,2022, BAM recorded both the income tax benefit on MSC of $7.5$8.7 million and $9.7$10.9 million and the offsetting expense in paid-in surplus. During 20212023 and 2020,2022, BAM continued to have a full valuation allowance recorded against its net deferred tax assets, as White Mountains management is unsure it will generate sufficient taxable income to utilize the deferred tax assets.
During 2021 and 2020,2023, White Mountains recorded income tax (benefit) expensebenefit of $(0.8) million and $1.9$0.6 million to reflect the decrease or increase ofin the valuation allowance against athe deferred tax assets relating to its investment in certain partnership portfolios, including Elementum Holdings LLC at the U.S. branches of the White Mountains U.K. holdings companies. The decrease is due to partnership taxable income which reduced the company’s net operating loss carryforward and related deferred tax asset. As the deferred tax asset related to foreign tax creditsdeclined, so did the corresponding valuation allowance at the U.S. branches of the White Mountains CatskillU.K. holdings companies. White Mountains management is unsure it will generate sufficient taxable income to utilize the remaining deferred tax assets.
During 2022, White Mountains recorded income tax expense of $4.0 million to reflect the establishment of a valuation allowance against the deferred tax assets relating to its investment in certain partnership portfolios, including Elementum Holdings Inc., asLLC, and to reflect the change in the valuation allowance on deferred tax assets relating to net operating losses at the U.S. branches of the White Mountains U.K. holding companies. White Mountains management is unsure it will generate sufficient taxable income to utilize the deferred tax asset.assets.
During 2021,2023, White Mountains recorded income tax expense of $0.6$0.1 million to reflect the establishment of aincrease in the valuation allowance againston the net deferred tax assets relating to net operating losses at the US branches of thefor certain U.S. operations within Ark, as White Mountains U.K. holding companies.management does not currently anticipate sufficient taxable income to utilize the remaining deferred tax assets.

Non-U.S. Jurisdictions
During 2021,2023, White Mountains recorded income tax benefitexpense of $1.6$31.6 million to reflect the decrease ofincrease in the full valuation allowance against deferred tax assets which primarily relate to losses on the write-down of foreign subsidiaries and the unrealized losses on investments held in Luxembourg-domiciled subsidiaries. During 2020,2022, White Mountains recorded income tax benefit of $9.2 million to reflect the decrease in the full valuation allowance against deferred tax assets at certain Luxembourg-domiciled subsidiaries. The decrease is due to a Luxembourg company with net operating loss carryforwards re-domiciling to Bermuda which reduced White Mountains net operating loss carryforwards in Luxembourg and the related deferred tax asset. As the deferred tax asset declined, so did the corresponding valuation allowance. White Mountains management does not currently anticipate sufficient taxable income to utilize the remaining deferred tax assets.
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During 2023, White Mountains recorded income tax expense of $4.2$0.4 million to reflect the increase ofin the valuation allowance against most of the deferred tax assets which primarily relate to losses on the write-down of foreign subsidiaries and the unrealized losses on investments held in Luxembourg-domiciled subsidiaries.
During 2021 and 2020, White Mountains recorded income tax expense of $1.9 million and $2.7 million to establish a full valuation allowance against deferred tax assets at certain Israel-domiciled subsidiaries, as White Mountains management does not currently anticipate sufficient taxable income to utilize the deferred tax assets.
During 2021,2022, White Mountains recorded income tax benefit of $1.9$1.5 million to reflect the decrease ofin the valuation allowance against certainthe deferred tax assets at certain Israel-domiciled subsidiaries. The decrease is due to movement of foreign currency exchange rate gains during the year which reduced the company’s net operating loss carryforward and related deferred tax asset. As the deferred tax asset declined so did the corresponding valuation allowance. White Mountains management does not currently anticipate sufficient income to utilize the deferred tax assets.
During 2023, White Mountains recorded income tax benefit of $0.4 million to reflect the decrease in the full valuation allowance against deferred tax assets at certain U.K. subsidiaries, assubsidiaries. The decrease is due to investment income gains during the year which reduced the company’s net operating loss carryforward and related deferred tax asset. As the deferred tax asset declined, so did the corresponding valuation allowance. White Mountains management does not currently anticipate sufficient taxable income to utilize the remaining deferred tax assets. During 2020,2022, White Mountains recorded income tax expense of $1.0 million to reflect the increase ofin the full valuation allowance against deferred tax assets at certain U.K. subsidiaries, as White Mountains management does not currently anticipate sufficient taxable income to utilize the deferred tax assets.

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Net Operating Loss and Capital Loss Carryforwards

The following table presents net operating loss and capital loss carryforwards as of December 31, 2021,2023, the expiration dates and the deferred tax assets thereon:
December 31, 2021
December 31, 2023
December 31, 2023
December 31, 2023
MillionsMillionsUnited StatesLuxembourgUnited KingdomIsraelTotalMillionsUnited StatesLuxembourgUnited KingdomIsraelTotal
2021-2025$— $— $— $— $— 
2026-2030— — — — — 
2031-2040250.7 68.3 — — 319.0 
2024-2028
2024-2028
2024-2028
2029-2033
2034-2043
No expiration dateNo expiration date213.8 28.8 6.9 93.3 342.8 
TotalTotal$464.5 $97.1 $6.9 $93.3 $661.8 
Gross deferred tax assetGross deferred tax asset$97.6 $24.3 $1.4 $21.4 $144.7 
Valuation allowanceValuation allowance(83.2)(24.3)(.4)(21.4)(129.3)
Net deferred tax assetNet deferred tax asset$14.4 $ $1.0 $ $15.4 

Included in the U.S. net operating loss carryforwards are losses of $0.7 million subject to limitation on utilization under the separate-return-limitation-year (SRLY) rules in the Internal Revenue Code. These loss carryforwards will begin to expire in 2028. As of December 31, 2021,2023, there are U.S.U.K. foreign tax credit carryforwards available of $4.7$3.3 million, which begin to expire in 2028.do not have an expiration date.

Uncertain Tax Positions

Recognition of the benefit of a given tax position is based upon whether a company determines that it is more likely than not that a tax position will be sustained upon examination based upon the technical merits of the position. In evaluating the more-likely-than-notmore likely than not recognition threshold, White Mountains must presume that the tax position will be subject to examination by a taxing authority with full knowledge of all relevant information. If the recognition threshold is met, then the tax position is measured at the largest amount of benefit that is more than 50% likely of being realized upon ultimate settlement.
The following table presents a reconciliationAs of the beginningDecember 31, 2023 and ending amount of2022, White Mountains did not have any unrecognized tax benefits from 2019 to 2021:
Millions
Permanent
Differences (1)
Temporary
Differences (2)
Interest and
Penalties (3)
Total
  Balance at December 31, 2018$1.1 $— $— $1.1 
Changes in prior year tax positions1.3 — — 1.3 
Balance at December 31, 20192.4 — — 2.4 
Changes in prior year tax positions.1 — — .1 
Tax positions taken during the current year.1 — — .1 
Changes in prior year tax positions(2.6)— — (2.6)
Balance at December 31, 2020— — — — 
Changes in prior year tax positions— — — — 
Balance at December 31, 2021$ $ $ $ 
(1)Represents the amount of unrecognized tax benefits that, if recognized, would impact the effective tax rate.
(2)Represents the amount of unrecognized tax benefits that, if recognized, would create a temporary difference between the reported amount of an item in White Mountains’s Consolidated Balance Sheet and its tax basis.
(3)Net of tax benefit.

benefits.
White Mountains classifies all interest and penalties on unrecognized tax benefits as part of income tax expense. During the years ended December 31, 2021, 20202023, 2022 and 2019,2021, White Mountains did not recognize any net interest (income) expense. There was no accrued interest as of December 31, 20212023, 2022 and 2020.2021.

Tax Examinations

With a few immaterial exceptions, White Mountains is no longer subject to U.S. federal, state, or non-U.S. income tax examinations by tax authorities for years before 2016.2018.

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Note 9. Derivatives

NSM Interest Rate Swap

On June 15, 2018, NSM entered into an interest rate swap agreement to hedge its exposure to interest rate risk on $151.0 million of its USD denominated variable rate term loans under the NSM Bank Facility. Under the terms of the swap agreement, NSM pays a fixed-rate of 2.97% and receives a variable rate, which is reset monthly, based on the then-current USD-LIBOR. As of December 31, 2021, the variable rate received by NSM under the swap agreement was 1.00%. Over the term of the swap, the notional amount decreases in accordance with the principal repayments NSM expects to make on its initial term loans. The interest rate swap is scheduled to mature on June 30, 2024.
As of December 31, 2021, $146.1 million of the outstanding term loans were hedged by the swap. For the year ended December 31, 2021, the weighted average effective interest rate on the outstanding term loans that were hedged, including the effect of the amortization of debt issuance costs and the effect of the interest rate swap, was 9.0%.
NSM’s obligations under the swap are secured by the same collateral securing the NSM Bank Facility on a pari passu basis. NSM does not currently hold any collateral deposits from or provide any collateral deposits to the swap counterparty.
NSM evaluated the effectiveness of the swap to hedge its interest rate risk associated with its variable rate debt and concluded at the swap inception date that the swap was highly effective in hedging that risk. NSM evaluates the effectiveness of the hedging relationship on an ongoing basis.
For the years ended December 31, 2021, 2020 and 2019, White Mountains recognized net interest expense of $2.5 million, $2.5 million and $1.1 million for the periodic net settlement payments on the swap. As of December 31, 2021 and 2020, the estimated fair value of the swap and the accrual of the periodic net settlement payments recorded in other liabilities was $4.8 million and $8.2 million. There was no ineffectiveness in the hedge for the years ended December 31, 2021 and 2020. For the years ended December 31, 2021 and 2020, the $(3.4) million and $(1.6) million change in the fair value of the swap is included within White Mountains’s accumulated other comprehensive income (loss).

NSMHG Global Interest Rate Cap

On June 4, 2020, NSM16, 2022, HG entered into an interest rate cap agreement, effective on July 25, 2022, to limit its exposure to the risk of interest rate increases on the GBP denominated term loan under the NSM Bank Facility.HG Global Senior Notes. The notional amount of the interest rate cap is £42.5$150.0 million ($52.4 million based upon the foreign exchange spot rate as of the date of the transaction) and the termination date is June 4, 2022. On August 18, 2020, NSM entered into a separate interest rate cap agreement to extend the term of the original interest rate cap agreement by one year. The second interest rate cap agreement has an effective date of June 15, 2022 and a termination date of June 15, 2023.July 25, 2025.
NSMHG Global paid total initial premiums of $0.1$3.3 million for the interest rate caps.cap. Under the terms of the interest rate cap agreements,agreement, if the current GBP-LIBORthree month SOFR at the measurement date exceeds 1.25%3.5%, NSMHG Global will receive payments from the counterparty equal to the then-current GBP-LIBOR rate, lessdifference between the 1.25%three-month SOFR on the determination date and 3.5%, multiplied by the notional amount of the cap rate.based on the number of days in the quarter. As of December 31, 2021,2023, the GBP-LIBOR ratethree-month SOFR was 0.26%5.3%.
NSMHG Global accounts for the interest rate capscap as derivativesa derivative at fair value, with changes in fair value recognized in current period earnings within interest expense. For the years ended December 31, 20212023 and December 31, 2020,2022, White Mountains recognized a gain (loss) of $(1.2) million and $0.8 million related to the change in fair value of $(0.2) million and $(0.1) million on the interest rate capscap within interest expense. For the year ended December 31, 2023, White Mountains received a payment of $2.0 million related to the periodic settlement of the interest rate cap. During 2022, there were no payments received related to the periodic settlement of the interest rate cap. As of December 31, 20212023 and 2020,2022, the estimated fair value of the capsinterest rate cap recorded in other assets was $0.2$2.9 million and $0.1$4.1 million. White Mountains classifies the interest rate cap as a Level 2 measurement.

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Note 10. Municipal Bond Guarantee Insurance

HG Global was established to fund the startup of BAM, a mutual municipal bond insurer. HG Global, together with its subsidiaries, provided the initial capitalization of BAM through the purchase of $503.0 million of the BAM Surplus Notes.

Reinsurance Treaties

FLRT
BAM is a party to a first loss reinsurance treaty (“FLRT”) with HG Re under which HG Re provides first loss protection up to 15%-of-par outstanding on each municipal bond insured by BAM. For capital appreciation bonds, par is adjusted to the estimated equivalent par value for current interest paying bonds. In return, BAM cedes up toapproximately 60% of the risk premium charged for insuring the municipal bond, which is net of a ceding commission. The FLRT is a perpetual agreement with terms that can be renegotiated after a specified period of time. During 2021, BAM and HG Re agreed that the terms may be renegotiated at the end of 2024 and each subsequent five-year period thereafter.

Fidus Re
BAM is party to a collateralized financial guarantee excess of loss reinsurance agreement that serves to increase BAM’s claims paying resources and is provided by Fidus Re.
In the second quarter of 2018, Fidus Re was initially capitalized by the issuance of $100.0 million of insurance linkedinsurance-linked securities (the “Fidus Re 2018 Agreement”)., which have an initial term of 12 years and are callable five years after the date of issuance. The proceeds from issuance were placed in a collateral trust supporting Fidus Re’s obligations to BAM. The insurance linked securities were issued by Fidus Re with an initial term of 12 years and are callable five years after the date of issuance. Under the Fidus Re 2018 Agreement, Fidus Re reinsures 90% of aggregate losses exceeding $165.0 million on a portion of BAM’s financial guarantee portfolio (the “2018 Covered Portfolio”) up to a total reimbursement of $100.0 million. The Fidus Re 2018 Agreement does not provide coverage for losses in excess of $276.1 million. The 2018 Covered Portfolio consists of approximately 33%23% of BAM’s portfoliogross par outstanding as of financial guaranty policies issued through December 31, 2021.2023.
In the first quarter of 2021, Fidus Re issued an additional $150.0 million of insurance linked securities (the “Fidus Re 2021 Agreement”) withwhich have an initial term of 12 years and are callable five years after the date of issuance. The proceeds from issuance were placed in a collateral trust supporting Fidus Re’s obligations to BAM. Under the Fidus Re 2021 Agreement, Fidus Re reinsures 90% of aggregate losses exceeding $135.0 million on a portion of BAM’s financial guarantee portfolio (the “2021 Covered Portfolio”) up to a total reimbursement of $150.0 million. The Fidus Re 2021 Agreement does not provide coverage for losses in excess of $301.7 million. The 2021 Covered Portfolio consists of approximately 38%27% of BAM’s portfoliogross par outstanding as of financial guaranty policies issued through December 31, 2021.2023.
In 2022, Fidus Re issued an additional $150.0 million of insurance linked securities (the “Fidus Re 2022 Agreement”) which have an initial term of 12 years and are callable seven years after the date of issuance. The proceeds from issuance were placed in a collateral trust supporting Fidus Re’s obligations to BAM. Under the Fidus Re 2022 Agreement, Fidus Re reinsures 90% of aggregate losses exceeding $110.0 million on a portion of BAM’s financial guarantee portfolio (the “2022 Covered Portfolio”) up to a total reimbursement of $150.0 million. The Fidus Re 2022 Agreement does not provide coverage for losses in excess of $276.7 million. The 2022 Covered Portfolio consists of approximately 29% of BAM’s gross par outstanding as of December 31, 2023.
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The Fidus Re agreements are accounted for using deposit accounting, and any related financing expenses are recorded in general and administrative expenses as they do not meet the risk transfer requirements necessary to be accounted for as reinsurance.

XOLT
In January 2020, BAM entered into an excess of loss reinsurance agreement (the “XOLT”)the XOLT with HG Re. Under the XOLT, HG Re provides last dollar protection for exposures on municipal bonds insured by BAM in excess of the New York State Department of Financial Services (“NYDFS”) single issuer limits. TheAs of December 31, 2023, the XOLT is subject to an aggregate limit equal to the lesser of $75.0$125.0 million or the assets held in the Supplemental Trustsupplemental collateral trust (the “Supplemental Trust”) at any point in time. The agreement is accounted for using deposit accounting, and any related financing expenses are recorded in general and administrative expenses as the agreement does not meet the risk transfer requirements necessary to be accounted for as reinsurance.

Collateral Trusts

HG Re’s obligations under the FLRT are limited to the assets in two collateral trusts: a Regulation 114 Trust and a supplemental collateral trust (the “Supplemental Trust” and together with the Regulation 114 Trust, the “Collateral Trusts”).  Losses required to be reimbursed under the FLRT are subject to an aggregate limit equal to the assets held in two collateral trusts: the Collateral TrustsSupplemental Trust and the Regulation 114 Trust (together, the “Collateral Trusts”) at any point in time.
On a monthly basis, BAM deposits cash equal to ceded premiums, net of ceding commissions, due to HG Re under the FLRT directly into the Regulation 114 Trust. The Regulation 114 Trust target balance is equal to gross cededHG Re’s unearned premiums and unpaid ceded loss and LAE reserves, if any. If, at the end of any quarter, the Regulation 114 Trust balance is below the target balance, funds will be withdrawn from the Supplemental Trust and deposited into the Regulation 114 Trust in an amount equal to the shortfall. If, at the end of any quarter, the Regulation 114 Trust balance is above 102% of the target balance, funds will be withdrawn from the Regulation 114 Trust and deposited into the Supplemental Trust.  The Regulation 114 Trust balance as of December 31, 20212023 and 20202022 was $250.2$341.6 million and $222.8$288.6 million.
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The Supplemental Trust target balance is $603.0 million, less the amount of cash and securities in the Regulation 114 Trust in excess of its target balance (the “Supplemental Trust Target Balance”).  If, at the end of any quarter, the Supplemental Trust balance exceeds the Supplemental Trust Target Balance, such excess may be distributed to HG Re.  The distribution will be made first as an assignment of accrued interest on the BAM Surplus Notes and second in cash and/or fixed income securities.
As the BAM Surplus Notes are repaid over time, the BAM Surplus Notes will be replaced in the Supplemental Trust by cash and fixed income securities. The Supplemental Trust balance as of December 31, 20212023 and 20202022 was $601.8$606.9 million and $604.3$568.3 million.
As of December 31, 20212023 and 2020,2022, the Collateral Trusts held assets of $852.0$948.5 million and $827.1$856.9 million, which included $481.7$588.6 million and $434.5$503.3 million of cash, investments and investments, $364.6accrued investment income, $322.2 million and $388.2$340.0 million of BAM Surplus Notes and $5.7$37.7 million and $4.4$13.6 million of interest receivable on the BAM Surplus Notes.

BAM Surplus Notes

Through 2024, the interest rate on the BAM Surplus Notes is a variable rate equal to the one-year U.S. Treasury rate plus 300 basis points, set annually. During 2022,Beginning in 2025, the rate will be fixed through maturity at the higher of the 2024 variable rate or 8.0%. Accordingly, beginning in 2024 and through maturity, the interest rate on the BAM Surplus Notes will be 3.2%8.2%. Beginning in 2025, the interest rate will be fixed at the higher of the then current variable rate or 8.0%.Under its agreements with HG Global, BAM is required to seek regulatory approval to pay interestprincipal and principalinterest on the BAM Surplus Notes only to the extent that its remaining qualified statutory capital and other capital resources continue to support its outstanding obligations, its business plan and its “AA/stable” rating from Standard & Poor’s. No payment of principal or interest on the BAM Surplus Notes may be made without the approval of the NYDFS.
In December 2021,2023, BAM made a $33.8$27.4 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $23.6$17.8 million was a repayment of principal held in the Supplemental Trust, $0.4$2.0 million was a payment of accrued interest held insidein the Supplemental Trust and $9.8$7.6 million was a payment of accrued interest held outside the Supplemental Trust.
In December 2020,2022, BAM made a $30.1$36.0 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $21.5$24.6 million was a repayment of principal held in the Supplemental Trust, $0.2$1.0 million was a payment of accrued interest held insidein the Supplemental Trust and $8.4 million was a payment of accrued interest held outside the Supplemental Trust.
In January 2020, BAM made a one-time $65.0 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $47.9 million was a repayment of principal held in the Supplemental Trust, $0.9 million was a payment of accrued interest held inside the Supplemental Trust and $16.2$10.4 million was a payment of accrued interest held outside the Supplemental Trust.
As of December 31, 20212023 and 2020,2022, the principal balance on the BAM Surplus Notes was $364.6$322.2 million
and $388.2$340.0 million and total interest receivable on the BAM Surplus Notes was $157.6$174.5 million and $155.7$157.9 million.

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Insured Obligations and Premiums

The following table presents a schedule of BAM’s insured obligations as of December 31, 20212023 and 2020:2022:
December 31, 2021December 31, 2020
December 31,December 31,
202320232022
Contracts outstandingContracts outstanding12,35010,997Contracts outstanding14,48513,382
Remaining weighted average contract period (in years)Remaining weighted average contract period (in years)10.810.7Remaining weighted average contract period (in years)11.110.8
Contractual debt service outstanding (in millions):Contractual debt service outstanding (in millions):
Principal Principal$89,196.5 $75,287.7 
Principal
Principal
Interest Interest41,486.5 36,448.8 
Total debt service outstanding Total debt service outstanding$130,683.0 $111,736.5 
Gross unearned insurance premiums$266.3 $237.5 
Gross unearned insurance premiums (in millions)
Gross unearned insurance premiums (in millions)
Gross unearned insurance premiums (in millions)

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The following table presents a schedule of BAM’s future premium revenues as of December 31, 2021:2023:
MillionsDecember 31, 2021
January 1, 2022 - March 31, 2022$6.4 
April 1, 2022 - June 30, 20226.4 
July 1, 2022 - September 30, 20226.3 
October 1, 2022 - December 31, 20226.1 
25.2 
202323.9 
202422.2 
202520.6 
202619.1 
2027 and thereafter155.3 
Total gross unearned insurance premiums$266.3 
MillionsDecember 31, 2023
January 1, 2024 - March 31, 2024$7.5 
April 1, 2024 - June 30, 20247.5 
July 1, 2024 - September 30, 20247.3 
October 1, 2024 - December 31, 20247.2 
29.5 
202527.7 
202626.0 
202724.4 
202822.6 
2029 and thereafter195.6 
Total gross unearned insurance premiums$325.8 

The following table presents a schedule of written premiums and earned premiums included in White Mountains’sthe HG Global/BAM segment for the years ended December 31, 2021, 20202023, 2022 and 2019:2021:
December 31,December 31,
MillionsMillionsDecember 31, 2021December 31, 2020December 31, 2019Millions202320222021
Written premiums:Written premiums:
Direct
Direct
DirectDirect$51.2 $61.5 $28.1 
AssumedAssumed4.6 .2 10.6 
Gross written premiums (1)
Gross written premiums (1)
$55.8 $61.7 $38.7 
Earned premiums:Earned premiums:
DirectDirect$23.2 $19.4 $13.6 
Direct
Direct
AssumedAssumed3.7 3.4 2.7 
Gross earned premiums (1)
Gross earned premiums (1)
$26.9 $22.8 $16.3 
(1) There are no ceded premium amounts in the periods presented, and Grossgross earned premiumpremiums are equivalent to net written premiums and net earned premiums.

In the third quarter of 2019,September 2022, BAM entered into a 100% facultative quota share reinsurance agreementsagreement under which it assumed a portfolio of municipal bond guarantee contracts with a par value of $1.1 billion.$42.5 million. During 2023, the contracts associated with this assumed reinsurance transaction were novated.
In the second quarter of 2020, BAM assumed a municipal bond guarantee contract with a par value of $36.9 million through an endorsement to the facultative quota share reinsurance agreement.
In the first quarter ofJanuary 2021, BAM entered into a 100% facultative quota share reinsurance agreement under which it assumed a portfolio of municipal bond guarantee contracts with a par value of $0.8 billion.$805.5 million.
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None of the contracts assumed under these reinsurance agreements were non-performing, and no loss reserves have been established for any of the contracts, either as of the transaction dates or as of December 31, 2021.2023. The agreements, which cover future claims exposure only, meet the risk transfer criteria under ASC 944-20, Insurance Activities and accordingly have been accounted for as reinsurance.

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Note 11. Earnings Per Share

White Mountains calculates earnings per share using the two-class method, which allocates earnings between common shares and unvested restricted common shares. Both classes of shares participate equally in dividends and earnings on a per share basis. Basic earnings per share amounts are based on the weighted average number of common shares outstanding adjusted for unvested restricted common shares.
The following table presents the Company’s computation of earnings per share from continuing operations for the years ended December 31, 2021, 20202023, 2022 and 2019.2021. See Note 2120 “Held for Sale and Discontinued Operations”.
Year Ended December 31,
202120202019
Year Ended December 31,Year Ended December 31,
2023202320222021
Basic and diluted earnings per share numerators (in millions):Basic and diluted earnings per share numerators (in millions):   Basic and diluted earnings per share numerators (in millions):  
Net income (loss) attributable to White Mountains’s
common shareholders
Net income (loss) attributable to White Mountains’s
common shareholders
$(275.4)$708.7 $414.5 
Less: total (loss) income from discontinued operations, net of tax18.7 (2.3).8 
Less: total income (loss) from discontinued operations, net of tax (1)
Less: net (income) loss from discontinued operations attributable
to noncontrolling interests
Net income (loss) from continuing operations attributable to
White Mountains’s common shareholders
Net income (loss) from continuing operations attributable to
White Mountains’s common shareholders
(294.1)711.0 413.7 
Allocation of (earnings) losses to participating restricted common shares (1)(2)
Allocation of (earnings) losses to participating restricted common shares (1)(2)
3.5 (9.3)(5.3)
Basic and diluted earnings (losses) per share numerators
Basic and diluted earnings (losses) per share numerators
Basic and diluted earnings (losses) per share numeratorsBasic and diluted earnings (losses) per share numerators$(290.6)$701.7 $408.4 
Basic earnings per share denominators (in thousands):Basic earnings per share denominators (in thousands):
Basic earnings per share denominators (in thousands):
Basic earnings per share denominators (in thousands):
Total average common shares outstanding during the periodTotal average common shares outstanding during the period3,079.0 3,122.2 3,181.6 
Average unvested restricted common shares (2)
(36.5)(40.8)(40.5)
Total average common shares outstanding during the period
Total average common shares outstanding during the period
Average unvested restricted common shares (3)
Basic earnings (losses) per share denominatorBasic earnings (losses) per share denominator3,042.5 3,081.4 3,141.1 
Diluted earnings per share denominator (in thousands):Diluted earnings per share denominator (in thousands):
Total average common shares outstanding during the periodTotal average common shares outstanding during the period3,079.0 3,122.2 3,181.6 
Average unvested restricted common shares (2)
(36.5)(40.8)(40.5)
Total average common shares outstanding during the period
Total average common shares outstanding during the period
Average unvested restricted common shares (3)
Diluted earnings (losses) per share denominatorDiluted earnings (losses) per share denominator3,042.5 3,081.4 3,141.1 
Diluted earnings (losses) per share denominator
Diluted earnings (losses) per share denominator
Basic and diluted earnings per share (in dollars) - continuing operations:Basic and diluted earnings per share (in dollars) - continuing operations:
Distributed earnings - dividends declared and paid
Distributed earnings - dividends declared and paid
Distributed earnings - dividends declared and paidDistributed earnings - dividends declared and paid$1.00 $1.00 $1.00 
Undistributed earnings (losses)Undistributed earnings (losses)(96.53)226.72 129.02 
Basic and diluted earnings (losses) per shareBasic and diluted earnings (losses) per share$(95.53)$227.72 $130.02 
(1)Includes net income (loss) from discontinued operations, net of tax - NSM Group, net gain (loss) from sale of discontinued operations, net of tax - NSM Group and net gain (loss) from sale of discontinued operations, net of tax - Sirius Group. See Note 20 — “Held for Sale and Discontinued Operations.”
(2) Restricted shares issued by White Mountains receive dividends, and therefore, are considered participating securities.
(2)(3) Restricted shares outstanding vest upon a stated date. See Note 12 — “Employee Share-Based Incentive Compensation Plans”.

The following table presents the undistributed net earnings (losses) from continuing operations for the years ended December 31, 2021, 20202023, 2022 and 2019.2021. See Note 2120 — “Held for Sale and Discontinued Operations”.
Year Ended December 31,
Year Ended December 31,
Year Ended December 31,
Year Ended December 31,
MillionsMillions202120202019Millions202320222021
Undistributed net earnings - continuing operations:Undistributed net earnings - continuing operations:
Net income (loss) attributable to White Mountains’s common shareholders,
net of restricted common share amounts
Net income (loss) attributable to White Mountains’s common shareholders,
net of restricted common share amounts
$(290.6)$701.7 $408.4 
Net income (loss) attributable to White Mountains’s common shareholders,
net of restricted common share amounts
Net income (loss) attributable to White Mountains’s common shareholders,
net of restricted common share amounts
Dividends declared, net of restricted common share amounts (1)
Dividends declared, net of restricted common share amounts (1)
(3.1)(3.1)(3.2)
Total undistributed net earnings (losses), net of restricted common share amountsTotal undistributed net earnings (losses), net of restricted common share amounts$(293.7)$698.6 $405.2 
(1) Restricted shares issued by White Mountains receive dividends, and therefore, are therefore considered participating securities.



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Note 12. Employee Share-Based Incentive Compensation Plans

White Mountains’s share-based incentive compensation plans are designed to incentivize key employees to maximize shareholder value over long periods of time. White Mountains believes that this is best pursued by utilizing a pay-for-performance program that closely aligns the financial interests of management with those of its shareholders.shareholders while rewarding appropriate risk taking. White Mountains accomplishes this by emphasizing highly variable long-term compensation that is contingent on performance over a number of years rather than fixed entitlements. White Mountains expenses all its share-based compensation. As a result, White Mountains’s calculation of its owners’ returns includes the expense of all outstanding share-based compensation awards.

Incentive Compensation Plans

The WTM Incentive Plan provides for grants of various types of share-based and non-share-based incentive awards to key employees and directors of White Mountains. The WTM Incentive Plan was adopted by the Board, was approved by the Company’s sole shareholder in 1985As of December 31, 2023 and was subsequently amended by its shareholders in 1995, 2001, 2003, 2005, 2010, 2013 and 2019. Share-based2022, White Mountains’ share-based incentive compensation awards that may be granted under the plan includeconsist of performance shares and restricted shares, incentive stock options and non-qualified stock options.shares.

Performance Shares

Performance shares are designed to reward employees for meeting company-wide performance targets. Performance shares are conditional grants of a specified maximum number of common shares or an equivalent amount of cash. Awards generally vest at the end of a three-yearthree-year service period, are subject to the attainment of pre-specified performance goals, and are valued based on the market value of common shares at the time awards are paid. Performance shares earned under the WTM Incentive Plan are typically paid in cash but may be paid in common shares. Compensation expense is recognized for the vested portion of the awards over the related service periods. The level of payout ranges from zero to 2two times the number of shares initially granted, depending on White Mountains’s financial performance. Performance shares become payable at the conclusion of a performance cycle (typically three years) if pre-defined financial targets are met. The performance measures used for determining performance share payouts are growth in White Mountains’s adjusted book value per share and intrinsic value per share. Intrinsic value per share is generally calculated by adjusting adjusted book value per share for differences between the adjusted book value of certain assets and liabilities and White Mountains’s estimate of their underlying intrinsic values.
The following table presents performance share activity for the years ended December 31, 2021, 20202023, 2022 and 20192021 for performance shares granted under the WTM Incentive Plan:
Year Ended December 31,
202120202019
Year Ended December 31,Year Ended December 31,
2023202320222021
$ in Millions$ in MillionsTarget
Performance
Shares
Outstanding
Accrued
Expense
Target
Performance
Shares
Outstanding
Accrued
Expense
Target
Performance
Shares
Outstanding
Accrued
Expense
$ in MillionsTarget
Performance
Shares
Outstanding
Accrued
Expense
Target
Performance
Shares
Outstanding
Accrued
Expense
Target
Performance
Shares
Outstanding
Accrued
Expense
Beginning of periodBeginning of period42,458 $56.3 42,473 $43.7 40,616 $31.7 
Shares paid or expired (1)
Shares paid or expired (1)
(14,336)(35.2)(14,070)(27.7)(13,715)(18.1)
New grantsNew grants13,475  14,055 — 15,600 — 
Forfeitures and cancellations (2)
Forfeitures and cancellations (2)
(769).4 — (.4)(28)(.1)
Expense recognizedExpense recognized— 20.7 — 40.7 — 30.2 
Expense recognized
Expense recognized
End of periodEnd of period40,828 $42.2 42,458 $56.3 42,473 $43.7 
(1)WTM performance share payments in 2023 for the 2020-2022 performance cycle, which were paid in March 2023 at 200% of target.
WTM performance share payments in 2022 for the 2019-2021 performance cycle, which were paid in March 2022 at 172% of target.
WTM performance share payments in 2021 for the 2018-2020 performance cycle, which were paid in March 2021 at 200% of target.
WTM performance share payments in 2020 for the 2017-2019 performance cycle, which were paid in March 2020, ranged from 174% to 180% of target.
WTM performance share payments in 2019 for the 2016-2018 performance cycle, which were paid in March 2019, ranged from 139% to 166% of target.
(2)Amounts include changes in assumed forfeitures, as required under GAAP.


During 2023, White Mountains granted 10,895 performance shares for the 2023-2025 performance cycle. During 2022, White Mountains granted 13,225 performance shares for the 2022-2024 performance cycle. During 2021, White Mountains granted 13,475 performance shares for the 2021-2023 performance cycle.During 2020, White Mountains granted 14,055 performance shares for
For the 2020-2022 performance cycle. During 2019, White Mountains granted 15,600cycle, all performance shares earned were settled in cash. For the 2019-2021 performance cycle, the Company issued common shares for 750 performance shares earned, and all other performance shares earned were settled in cash. For the 2018-2020 performance cycle.
For the 2018-2020, 2017-2019 and 2016-2018 performance cycles,cycle, all performance shares earned were settled in cash. If theall outstanding performance shares had vested on December 31, 2021,2023, the total additional compensation cost to be recognized would have been $12.0$27.9 million, based on accrual factors as of December 31, 20212023 (common share price and payout assumptions).
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The following table presents performance shares outstanding and accrued expense for performance shares awarded under the WTM Incentive Plan as of December 31, 20212023 for each performance cycle:
December 31, 2023December 31, 2023
$ in Millions$ in MillionsTarget Performance
Shares Outstanding
Accrued Expense$ in MillionsTarget Performance
Shares Outstanding
Accrued Expense
Performance cycle:Performance cycle:  Performance cycle: 
2019 – 202114,625 $25.3 
2020 – 202213,350 15.4 
2023 – 2025
2022 – 2024
2021 – 20232021 – 202313,475 2.1 
Sub-totalSub-total41,450 42.8 
Assumed forfeituresAssumed forfeitures(622)(.6)
TotalTotal40,828 $42.2 

For the 2023-2025 performance cycle, the targeted performance goal for full payment of outstanding performance shares granted under the WTM Incentive Plan is 11% average annual growth in adjusted book value per share and intrinsic value per share. Average annual growth of 6% or less would result in no payout, and average annual growth of 16% or more would result in a payout of 200%.
For the 2022-2024 performance cycle, the targeted performance goal for full payment of outstanding performance shares granted under the WTM Incentive Plan is 9% average annual growth in adjusted book value per share and intrinsic value per share. Average annual growth of 4% or less would result in no payout, and average annual growth of 14% or more would result in a payout of 200%.
For the 2021-2023 performance cycle, the targeted performance goal for full payment of outstanding performance shares granted under the WTM Incentive Plan is 8% average annual growth in adjusted book value per share and intrinsic value per share. Average annual growth of 3% or less would result in no payout, and average annual growth of 13% or more would result in a payout of 200%.
For the 2020-2022 performance cycle, the targeted performance goal for full payment of outstanding performance shares granted under the WTM Incentive Plan is 7% average growth in adjusted book value per share and intrinsic value per share. Average growth of 2% or less would result in no payout and average growth of 12% or more would result in a payout of 200%.
For the 2019-2021 performance cycle, the targeted performance goal for full payment of outstanding performance shares granted under the WTM Incentive Plan is 7% average growth in adjusted book value per share and intrinsic value per share. Average growth of 2% or less would result in no payout and average growth of 12% or more would result in a payout of 200%.

Restricted Shares

Restricted shares are grants of a specified number of common shares that generally vest at the end of a three-year34-month service period. The following table presents the unrecognized compensation cost associated with the outstanding restricted share awards under the WTM Incentive Plan for the years ended December 31, 2021, 20202023, 2022 and 2019:2021:
Year Ended December 31,
202120202019
Year Ended December 31,Year Ended December 31,
2023202320222021
$ in Millions$ in MillionsRestricted
Shares
Unamortized
Issue Date Fair
Value
Restricted
Shares
Unamortized
Issue Date Fair
Value
Restricted
Shares
Unamortized
Issue Date Fair
Value
$ in MillionsRestricted
Shares
Unamortized
Issue Date Fair
Value
Restricted
Shares
Unamortized
Issue Date Fair
Value
Restricted
Shares
Unamortized
Issue Date Fair
Value
Non-vested,
Non-vested:
Beginning of period
Beginning of period
Beginning of periodBeginning of period43,105 $15.2 43,395 $16.7 41,510 $12.5 
IssuedIssued13,475 16.1 14,055 15.1 15,600 14.5 
VestedVested(17,936) (14,345)— (13,715)— 
ForfeitedForfeited(794)(.8)— — — — 
Expense recognizedExpense recognized (14.6)— (16.6)— (10.3)
Expense recognized
Expense recognized
End of periodEnd of period37,850 $15.9 43,105 $15.2 43,395 $16.7 

During 2023, White Mountains issued 10,895 restricted shares that vest on January 1, 2026. During 2022, White Mountains issued 13,225 restricted shares that vest on January 1, 2025. During 2021, White Mountains issued 13,475 restricted shares that vest on January 1, 2024. During 2020, White Mountains issued 14,055 restricted shares that vest on January 1, 2023. During 2019, White Mountains issued 15,600 restricted shares that vest on January 1, 2022. The unamortized issue date fair value as of December 31, 20212023 is expected to be recognized ratably over the remaining vesting periods.


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Note 13. Leases

White Mountains has entered into lease agreements, primarily for office space. These leases are classified as operating leases, with lease expense recognized on a straight-line basis over the term of the lease. Lease incentives, such as free rent or landlord reimbursements for leasehold improvements, are recognized at lease inception and amortized on a straight-line basis over the term of the lease. Lease expense and the amortization of leasehold improvements are recognized within general and administrative expenses. Lease payments related to options to extend or renew the lease term are excluded from the calculation of lease liabilities unless White Mountains is reasonably certain of exercising those options.
As of December 31, 2021 and 2020, the right-of-use (“ROU”) asset was $42.2 million and $37.6 million and lease liabilities were $45.2 million and $38.3 million.
The following table summarizes net lease expense recognized in White Mountains’s consolidated statement of operations for the years ended December 31, 2021 and 2020:
Millions

Lease Cost
December 31, 2021December 31, 2020
Lease cost$9.9 $7.7 
Less: sublease income.4 .4 
Net lease cost$9.5 $7.3 

The following table presents the contractual maturities of the lease liabilities associated with White Mountains’s operating lease agreements as of December 31, 2021:
MillionsDecember 31, 2021
2022$10.9 
20239.9 
20248.5 
20256.8 
20264.3 
Thereafter11.9 
Total undiscounted lease payments52.3 
Less: present value adjustment(7.1)
Operating lease liability$45.2 

The following table presents lease related assets and liabilities by reportable segment as of December 31, 2021 and 2020:
As of December 31, 2021
$ in MillionsHG/BAMArkNSMKuduOther OperationsTotal
Weighted Average Incremental Borrowing Rate (1)
ROU lease asset$7.6 $7.0 $14.0 $6.5 $7.1 $42.2 5%
Lease liability$8.1 $7.0 $15.2 $7.1 $7.8 $45.2 
(1) The present value of the remaining lease payments was determined by discounting the lease payments using the incremental borrowing rate.

December 31, 2020
$ in MillionsHG/BAMNSMKuduOther OperationsTotal
Weighted Average Incremental Borrowing Rate (1)
ROU lease asset$10.1 $17.1 $2.0 $8.4 $37.6 4.6%
Lease liability$10.1 $17.1 $2.0 $9.1 $38.3 
(1) The present value of the remaining lease payments was determined by discounting the lease payments using the incremental borrowing rate.

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Note 14.13. Common Shareholders’ Equity and Non-controllingNoncontrolling Interests

Common Shares Repurchased and Retired

During the past several years, White Mountains’s board of directors authorized the Company to repurchase its common shares, from time to time, subject to market conditions. Shares may be repurchased on the open market or through privately negotiated transactions. The repurchase authorizations do not have a stated expiration date. As of December 31, 2021,2023, White Mountains may repurchase an additional 451,224301,014 shares under these board authorizations. In addition, from time to time White Mountains has also repurchased its common shares through tender offers that were separately authorized by its board of directors.
During 2023, the Company repurchased 24,165 common shares for $32.7 million at an average share price of $1,354.88, which included 19,536 common shares repurchased under the board authorizations for $26.2 million at an average share price of $1,340.79 and 4,629 common shares repurchased to satisfy employee income tax withholding pursuant to employee benefit plans.
During 2022, the Company repurchased 461,256 common shares for $615.8 million at an average share price of $1,335.11, which included 129,450 common shares repurchased under the board authorizations for $150.9 million at an average share price of $1,165.84 and 4,011 common shares repurchased to satisfy employee income tax withholding pursuant to employee benefit plans. In addition, on September 26, 2022, the Company completed a self-tender offer, through which it repurchased 327,795 common shares at a purchase price of $1,400.00 per share for a total cost of approximately $460.8 million, including expenses.
During 2021, the Company repurchased 98,511 common shares for $107.5 million at an average share price of $1,091,$1,091.29, which werewas comprised of 91,293 common shares repurchased under the board authorizations for $100.0 million at an average share price of $1095$1,095.37 and 7,218 common shares repurchased pursuant to satisfy employee benefit plans.
During 2020, the Company repurchased 99,087 common shares for $85.1 million at an average share price of $859 pursuant to employee benefit plans.
During 2019, the Company repurchased 5,679 common shares for $4.9 million at an average share price of $858income tax withholding pursuant to employee benefit plans.
Common Shares Issued

During 2023, the Company issued a total of 12,461 common shares, which consisted of 10,895 restricted shares issued to key personnel and 1,566 shares issued to directors of the Company.
During 2022, the Company issued a total of 15,640 common shares, which consisted of 13,225 restricted shares issued to key personnel and 2,415 shares issued to directors of the Company.
During 2021, the Company issued a total of 15,066 common shares, which consisted of 13,475 restricted shares issued to key personnel 1,591 shares issued to directors of the Company.
During 2020, the Company issued a total of 15,745 common shares, which consisted of 14,055 restricted shares issued to key personnel and 1,440 shares issued to directors of the Company and 250 shares issued to MediaAlpha’s management.
During 2019, the Company issued a total of 17,917 common shares, which consisted of 15,600 restricted shares issued to key personnel, 2,3171,591 shares issued to directors of the Company.

Dividends on Common Shares

For the years ended December 31, 2021, 20202023, 2022 and 2019,2021, the Company declared and paid cash dividends totaling $3.1$2.6 million, $3.2$3.0 million and $3.2$3.1 million (or $1.00 per common share).

Non-controllingNoncontrolling Interests
Non-controlling
Noncontrolling interests consist of the ownership interests of non-controllingnoncontrolling shareholders in consolidated entities and are presented separately on the balance sheet.

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The following table presents the balance of non-controllingnoncontrolling interests included in White Mountains’s total equity and the related percentage of each consolidated entity’s total equity owned by non-controllingnoncontrolling shareholders as of December 31, 20212023 and 2020:2022:
December 31, 2021December 31, 2020 December 31, 2023December 31, 2022
$ in Millions$ in MillionsNon-controlling PercentageNon-controlling EquityNon-controlling PercentageNon-controlling Equity$ in Millions
Noncontrolling Percentage (1)
Noncontrolling Equity
Noncontrolling Percentage (1)
Noncontrolling Equity
Non-controlling interests, excluding BAM
Noncontrolling interests, excluding BAM
HG Global
HG Global
HG GlobalHG Global3.1 %$8.9 3.1 %$13.5 
ArkArk28.0 %230.7 — %— 
NSM3.5 %16.7 3.4 %17.0 
Kudu
Kudu2.5 %12.4 .7 %2.3 
Other
Other
OtherOthervarious11.9 various2.4 
Total, excluding BAMTotal, excluding BAM280.6 35.2 
BAMBAM100.0 %(124.0)100.0 %(123.3)
Total non-controlling interests$156.6 $(88.1)
BAM
BAM
Total noncontrolling interests
(1) The noncontrolling percentage represents the basic ownership interests held by noncontrolling shareholders with the exception of HG Global, for which the noncontrolling percentage represents the preferred share ownership held by noncontrolling shareholders.

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Note 15.14. Statutory Capital and Surplus

White Mountains’s insurance operations are subject to regulation and supervision in each of the jurisdictions where they are domiciled and licensed to conduct business. Generally, regulatory authorities have broad supervisory and administrative powers over such matters as licenses, standards of solvency, premium rates, policy forms, investments, security deposits, methods of accounting, form and content of financial statements, minimum capital and surplus requirements, dividends and other distributions to shareholders, periodic examinations and annual and other report filings. In general, such regulation is for the protection of policyholders rather than shareholders. 
The Insurance Act 1978 of Bermuda and related regulations, as amended (“Insurance Act”), regulates the insurance business of Bermuda-domiciled insurers. Under the Insurance Act, insurers are required to maintain available statutory capital and surplus at a level equal to or in excess of its enhanced capital requirement which is established by reference to either a Bermuda Solvency Capital Requirement (“BSCR”) model or an approved internal capital model. Generally, the Bermuda Monetary Authority (“BMA”)BMA has broad supervisory and administrative powers over such matters as licenses, standards of solvency, investments, methods of accounting, form and content of financial statements, minimum capital and surplus requirements and annual and other report filings.

HG Global/BAM

HG Re is a Special Purpose Insurerspecial purpose insurer under Bermuda insurance regulations and is subject to regulation and supervision by the BMA. As of December 31, 2021,2023, HG Re had statutory capital and surplus of $760.0$784.2 million. As a Special Purpose Insurer,special purpose insurer, HG Re has a nominal minimum regulatory capital requirement of $1.
BAM is domiciled in New York and is subject to regulation by the NYDFS. New York financial guarantee insurance law establishes single risk and aggregate limits with respect to insured obligations insured by financial guarantee insurers. BAM’s statutory net income (loss)loss for the years ended December 31, 2023, 2022 and 2021 2020 and 2019 was $(49.3)$51.1 million, $(59.3)$55.0 million and $(38.3)$49.3 million. BAM’s statutory surplus, as reported to regulatory authorities as of December 31, 2021,2023, was $298.1$269.3 million, which exceeds the minimum statutory surplus of $66.0 million necessary for BAM to maintain its New York State financial guarantee insurance license of $66.0 million.license.

Ark

Syndicates 4020 and 3902 are subject to oversight by the Council of Lloyd’s. Ark Syndicate Management Limited (“ASML”) is authorized by the U.K.’s Prudential Regulation Authority (the “PRA”) and regulated by the Financial Conduct Authority under the Financial Services and Markets Act 2000. The underwriting capacity of a Member of Lloyd’s must be supported by providing a deposit in the form of cash, securities or letters of credit in an amount determined under the capital adequacy regime of the U.K.’s Prudential Regulation Authority (the “PRA”).PRA. This amount is determined by Lloyd’s and is based on each syndicate’s solvency and capital requirement as calculated through its internal model. In addition, if the Funds at Lloyd’s are not sufficient to cover all losses, the Lloyd’s Central Fund provides an additional discretionary level of security for policyholders. As of December 31, 2021,2023, Ark had provided Funds at Lloyd’s of $343.6$345.2 million.
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GAIL is subject to regulation and supervision by the BMA. As of December 31, 2021,2023, GAIL had statutory capital and surplus of $780.3$1,087.5 million. GAIL’s minimum statutory capital and surplus requirement established by the BMA was $288.2$508.4 million as of December 31, 2021.2023.

WM Outrigger Re

WM Outrigger Re is a special purpose insurer under Bermuda insurance regulations and is subject to regulation and supervision by the BMA. As of December 31, 2023, WM Outrigger Re had statutory capital and surplus of $273.0 million. As a special purpose insurer, WM Outrigger Re has a nominal minimum regulatory capital requirement of $1.

Dividend Capacity

There are no restrictions under Bermuda law or the law of any other jurisdiction on the payment of dividends from retained earnings by White Mountains, provided that after the payment of any dividend, the Company would continue to be able to pay its liabilities as they become due and the realizable value of the Company’s assets would remain greater that its liabilities. Following is a description of the dividend capacity of White Mountains’s reinsuranceinsurance and other operatingreinsurance subsidiaries:

HG Global/BAM
As of December 31, 2021, HG Global had $619.0 million face value of preferred shares outstanding, of which White Mountains owned 96.9%. Holders of the HG Global preferred shares receive cumulative dividends at a fixed annual rate of 6.0% on a quarterly basis, when and if declared by HG Global. During 2021, HG Global declared and paid a $22.0 million preferred dividend, of which $21.3 million was paid to White Mountains. As of December 31, 2021, HG Global had accrued $414.7 million of dividends payable to holders of its preferred shares, of which $400.5 million was payable to White Mountains and eliminated in consolidation. As of December 31, 2021, HG Global and its subsidiaries had $3.1 million of cash outside of HG Re.
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HG Re is a Special Purpose Insurerspecial purpose insurer subject to regulation and supervision by the BMA, butBMA. HG Re does not require regulatory approval to pay dividends. However, HG Re’sdividends, however, its dividend capacity is limited to amounts held outside of the Collateral Trusts pursuant to the FLRT with BAM. As of December 31, 2021,2023, HG Re had $760.0$3.0 million of statutory capital and surplus and $852.0 million of assets held in the Collateral Trusts pursuant to the FLRT with BAM.
On a monthly basis, BAM deposits cash equal to ceded premiums, net of ceding commissions, due to HG Re under the FLRT directly into the Regulation 114 Trust.  The Regulation 114 Trust target balance is equal to gross ceded unearned premiums and unpaid ceded loss and LAE, if any.  If, at the end of any quarter, the Regulation 114 Trust balance is below the target balance, funds will be withdrawn from the Supplemental Trust and deposited into the Regulation 114 Trust in an amount equal to the shortfall.  If, at the end of any quarter, the Regulation 114 Trust balance is above 102% of the target balance, funds will be withdrawn from the Regulation 114 Trust and deposited into the Supplemental Trust.
The Supplemental Trust Target Balance is $603.0 million, less the amount of cash and securities in the Regulation 114 Trust in excess of its target balance.  If, at the end of any quarter, the Supplemental Trust balance exceeds the Supplemental Trust Target Balance, such excess may be distributed to HG Re.  The distribution will be made first as an assignment of accrued interest on the BAM Surplus Notes and second in cash and/or fixed income securities.  As the BAM Surplus Notes are repaid over time, the BAM Surplus Notes will be replaced in the Supplemental Trust by cash and fixed income securities.
unrestricted cash. As of December 31, 2021, the Collateral Trusts held assets of $852.0 million, which included $481.7 million of cash and investments, $364.6 million of BAM Surplus Notes and $5.7 million of interest receivable on the BAM Surplus Notes.
As of December 31, 2021,2023, HG Re had $9.4 million of cash and investments and $116.8$105.8 million of accrued interest on the BAM Surplus Notes held outside the Collateral Trusts. As of December 31, 2023, HG Re had $784.2 million of statutory capital and surplus and $948.5 million of assets held in the Collateral Trusts.
Through 2024, the interest rate on the BAM Surplus Notes is a variable rate equal to the one-year U.S. Treasury rate plus 300 basis points, set annually. During 2022, the interest rate on the BAM Surplus Notes will be 3.2%. Beginning in 2025, the interest rate will be fixed at the higher of the then current variable rate or 8.0%.Under its agreements with HG Global, BAM is required to seek regulatory approval to pay interestprincipal and principalinterest on the BAM Surplus Notes only to the extent that its remaining qualified statutory capital and other capital resources continue to support its outstanding obligations, its business plan and its “AA/stable” rating from Standard & Poor’s. No payment of principal or interest on the BAM Surplus Notes may be made without the approval of the NYDFS.
In December 2021,2023, BAM made a $33.8$27.4 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $23.6$17.8 million was a repayment of principal held in the Supplemental Trust, $0.4$2.0 million was a payment of accrued interest held in the Supplemental Trust and $9.8$7.6 million was a payment of accrued interest held outside the Supplemental Trust.
In December 2020,2022, BAM made a $30.1$36.0 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $21.5$24.6 million was a repayment of principal held in the Supplemental Trust, $0.2$1.0 million was a payment of accrued interest held in the Supplemental Trust and $8.4 million was a payment of accrued interest held outside the Supplemental Trust.
In January 2020, BAM made a one-time $65.0 million cash payment of principal and interest on the BAM Surplus Notes held by HG Global. Of this payment, $47.9 million was a repayment of principal held in the Supplemental Trust, $0.9 million was a payment accrued interest held in the Supplemental Trust and $16.2$10.4 million was a payment of accrued interest held outside the Supplemental Trust.

Ark
During any 12-month period, GAIL, a class 4 licensed Bermuda insurer, has the ability to (i) make capital distributions based onof up to 15%of its total statutory capital per the previous year’s statutory financial statements, or (ii) make dividend payments based onof up to 25% of its total statutory capital and surplus per the previous year’s statutory financial statements, without prior approval of Bermuda regulatory authorities. Accordingly, White Mountains expects GAIL will have the ability to make capital distributionspay a dividend of $113.6up to $271.9 million during 2022,2024, which is equal to 15%25% of its December 31, 20212023 statutory capital and surplus of $757.6$1,087.5 million, subject to meeting all appropriate liquidity and solvency requirements and the filing of its December 31, 20212023 statutory financial statements. During 2021,2023, GAIL did not paypaid a dividend to its immediate parent.
As of December 31, 2021, Ark and its intermediate holding companies had $4.0$15 million of net unrestricted cash, short-term investments and fixed maturity investments outside of its regulated and unregulated insurance and reinsurance operating subsidiaries. During 2021, Ark did not pay any dividendsdividend to its immediate parent.

NSM
During 2021, NSM distributed $8.0 million to unitholders, substantially all of which was paid to White Mountains. As of December 31, 2021, NSM had $22.3 million of net unrestricted cash and short-term investments.

Kudu
During 2021, Kudu distributed $19.4 million to unitholders, substantially all of which was paid to White Mountains. As of December 31, 2021, Kudu had $16.9 million of net unrestricted cash and short-term investments.

F - 6762


Other Operations
During 2021, White Mountains paid a $3.1 million common share dividend. As of December 31, 2021, the Company and its intermediate holding companies had $453.5 million of net unrestricted cash, short-term investments and fixed maturity investments, $261.6 million of MediaAlpha common stock and $170.5 million of private equity funds and ILS funds.

Note 16.15. Segment Information

As of December 31, 2021,2023, White Mountains conducted its operations through 5three reportable segments: (1) HG Global/BAM, (2) Ark,Ark/WM Outrigger, and (3) NSM, (4) Kudu, with its remaining operating businesses, holding companies and (5)other assets included in Other Operations.
As a result of the Ark Transaction, White Mountains began consolidating Ark in its financial statements as of January 1, 2021. See Note 2 — “Significant Transactions”.
As a result of the Kudu Transaction, White Mountains began consolidating Kudu in its financial statements in the second quarter of 2019. White Mountains’s segment disclosures for the year ended December 31, 2019 include Kudu’s results of operations for the period from April 4, 2019, the date of the Kudu Transaction, to December 31, 2019. See Note 2 — “Significant Transactions”.
As a result of the 2019 MediaAlpha Transaction, White Mountains no longer consolidated MediaAlpha, and consequently it was no longer a reportable segment. White Mountains’s segment disclosures for the year ended December 31, 2019 include MediaAlpha’s results of operations for the period from January 1, 2019 to February 26, 2019, the date of the 2019 MediaAlpha Transaction. See Note 2 — “Significant Transactions”.
White Mountains has made its segment determination based on consideration of the following criteria: (i) the nature of the business activities of each of the Company’s subsidiaries and affiliates; (ii) the manner in which the Company’s subsidiaries and affiliates are organized; (iii) the existence of primary managers responsible for specific subsidiaries and affiliates; and (iv) the organization of information provided to the Company’s chief operating decision makers and theits Board of Directors. Significant intercompany transactions among White Mountains’s segments have been eliminated herein.
During the fourth quarter of 2022, Ark sponsored the formation of Outrigger Re Ltd. to provide reinsurance protection on Ark’s Bermuda global property catastrophe excess of loss portfolio written in the 2023 underwriting year. During the fourth quarter of 2023, Ark renewed Outrigger Re Ltd. for the 2024 underwriting year. White Mountains consolidates its segregated account of Outrigger Re Ltd., WM Outrigger Re, in its financial statements. WM Outrigger Re’s quota share reinsurance agreement with GAIL eliminates in White Mountains’s consolidated financial statements. WM Outrigger Re exclusively provides reinsurance protection to Ark. Beginning in 2023, WM Outrigger Re was aggregated with Ark within the Ark/WM Outrigger segment. See Note 2 — “Significant Transactions.”
As a result of the NSM Transaction, the results of operations for NSM, previously reported as a segment, have been classified as discontinued operations in the statements of operations and comprehensive income through the closing of the transaction. See Note 20 — “Held for Sale and Discontinued Operations.”
Prior period amounts have been reclassified to conform to the current period’s presentation.
The following tables present the financial information for White Mountains’s segments:
HG Global/BAM
HG Global/BAM
HG Global/BAM
MillionsMillions
HG Global/BAM (1)
Ark
NSM (3)
KuduOther
Operations
Total
Year Ended December 31, 2021  
Millions
MillionsHG Global
BAM (1)
ArkWM Outrigger ReKuduOther
Operations
Total
Year Ended December 31, 2023Year Ended December 31, 2023  
Earned insurance premiums (2)
Earned insurance premiums (2)
$26.9$637.3$$— $$664.2 
Net investment incomeNet investment income17.5 2.9 — 43.9 18.2 82.5 
Net investment income (expense) - BAM
Surplus Note interest
Net realized and unrealized investment gains (losses)Net realized and unrealized investment gains (losses)(22.9)16.5 — 89.9 50.7 134.2 
Net realized and unrealized investment gains (losses)
from investment in MediaAlpha
Net realized and unrealized investment gains (losses)
from investment in MediaAlpha
— — — — (380.3)(380.3)
Commission revenues (4)
Commission revenues (4)
— — 258.0 — 9.6 267.6 
Other revenuesOther revenues1.5 11.8 72.4 .2 90.7 176.6 
Total revenuesTotal revenues23.0 668.5 330.4 134.0 (211.1)944.8 
Loss and loss adjustment expensesLoss and loss adjustment expenses— 314.8 — — — 314.8 
Insurance acquisition expenses8.3 178.0 — — — 186.3 
Loss and loss adjustment expenses
Loss and loss adjustment expenses
Acquisition expenses
Cost of salesCost of sales— — — — 69.3 69.3 
Cost of sales
Cost of sales
General and administrative expensesGeneral and administrative expenses57.1 115.5 190.1 14.5 105.7 482.9 
Broker commission expense— — 80.2 — — 80.2 
Change in fair value of contingent
consideration
Change in fair value of contingent
consideration
— — 1.0 — — 1.0 
Amortization of other intangible assets— — 35.2 .3 4.3 39.8 
Loss on assets held for sale— — 28.7 — — 28.7 
Change in fair value of contingent
consideration
Change in fair value of contingent
consideration
Interest expense
Interest expense
Interest expenseInterest expense— 7.3 23.3 11.7 1.5 43.8 
Total expensesTotal expenses65.4 615.6 358.5 26.5 180.8 1,246.8 
Pre-tax income (loss)Pre-tax income (loss)$(42.4)$52.9 $(28.1)$107.5 $(391.9)$(302.0)
(1) BAM manages its affairs on a statutory accounting basis. BAM’s statutory surplus includes the BAM Surplus Notes and is not reduced by accruals of interest expense on the BAM Surplus Notes. BAM’s statutory surplus is reduced only after a payment of principal or interest has been approved by the NYDFS.
(2) Ark’s earned insurance premiums based on the location of Ark’s underwriting offices in the United Kingdom and Bermuda are $791.7 and $513.7.
F - 63


HG Global/BAMArk/WM OutriggerOther
Operations
MillionsHG Global
BAM (1)
ArkKuduTotal
Year Ended December 31, 2022 
Earned insurance premiums (2)
$27.5$5.8$1,043.4 $— $— $1,076.7 
Net investment income10.3 11.2 16.3 54.4 32.2 124.4 
Net investment income (expense) - BAM
   Surplus Note interest
11.7 (11.7)— — — — 
Net realized and unrealized investment gains
   (losses)
(52.5)(53.3)(55.2)64.1 (1.6)(98.5)
Net realized and unrealized investment gains
   (losses) from investment in MediaAlpha
— — — — (93.0)(93.0)
Commission revenues— — — — 11.5 11.5 
Other revenues.5 4.1 5.0 — 127.2 136.8 
Total revenues(2.5)(43.9)1,009.5 118.5 76.3 1,157.9 
Losses and loss adjustment expenses— — 536.4 — — 536.4 
Acquisition expenses9.3 1.9 239.4 — — 250.6 
Cost of sales— — — — 98.6 98.6 
General and administrative expenses2.8 66.3 106.2 14.7 174.1 364.1 
Change in fair value of contingent
   consideration
— — 17.3 — — 17.3 
Interest expense8.3 — 15.1 15.0 1.9 40.3 
Total expenses20.4 68.2 914.4 29.7 274.6 1,307.3 
Pre-tax income (loss)$(22.9)$(112.1)$95.1 $88.8 $(198.3)$(149.4)
(1)    BAM manages its affairs on a statutory accounting basis. BAM’s statutory surplus includes the BAM Surplus Notes and is not reduced by accruals of interest expense on the BAM Surplus Notes. BAM’s statutory surplus is reduced only after a payment of principal or interest has been approved by the NYDFS.
(2)    Ark’s earned insurance premiums based on the location of Ark’s underwriting offices in the United Kingdom and Bermuda are $638.5 and $404.9.
F - 64


HG Global/BAMArk/WM OutriggerOther
Operations
MillionsHG Global
BAM (1)
ArkKuduTotal
Year Ended December 31, 2021  
Earned insurance premiums (2)
$22.2 $4.7 $637.3 $— $— $664.2 
Net investment income7.2 10.3 2.9 43.9 18.2 82.5 
Net investment income (expense) - BAM
   Surplus Note interest
12.0 (12.0)— — — — 
Net realized and unrealized investment
   gains (losses)
(13.7)(9.2)16.5 89.9 50.7 134.2 
Net realized and unrealized investment
   gains (losses) from investment in
   MediaAlpha
— — — — (380.3)(380.3)
Commission revenues— — — — 9.6 9.6 
Other revenues.5 1.0 11.8 .2 90.7 104.2 
Total revenues28.2 (5.2)668.5 134.0 (211.1)614.4 
Loss and loss adjustment expenses— — 314.8 — — 314.8 
Acquisition expenses5.7 2.6 178.0 — — 186.3 
Cost of sales— — — — 69.3 69.3 
General and administrative expenses2.0 55.1 110.0 14.8 109.7 291.6 
Change in fair value of contingent
   consideration
— — 5.5  — 5.5 
Interest expense— — 7.3 11.7 1.5 20.5 
Total expenses7.7 57.7 615.6 26.5 180.5 888.0 
Pre-tax income (loss)$20.5 $(62.9)$52.9 $107.5 $(391.6)$(273.6)
(1)    BAM manages its affairs on a statutory accounting basis. BAM’s statutory surplus includes the BAM Surplus Notes and is not reduced by accruals of interest expense on the BAM Surplus Notes. BAM’s statutory surplus is reduced only after a payment of principal or interest has been approved by the NYDFS.
(2)    Ark’s earned insurance premiums based on the location of Ark’s underwriting offices in the United Kingdom and Bermuda are $459.3 and $178.0.
(3) Includes the results of J.C. Taylor from August 6, 2021, the date of the J.C. Taylor transaction.
(4) Approximately 25% of NSM’s commission revenue was associated with one single carrier.


F - 6865


Millions
HG Global/BAM (1)
NSMKuduOther
Operations
Total
Year Ended December 31, 2020  
Earned insurance premiums$22.8$— $— $— $22.8 
Net investment income19.5 — 29.5 82.0 131.0 
Net realized and unrealized investment gains (losses)23.7 — 15.9 (8.8)30.8 
Net realized and unrealized investment gains (losses)
   from investment in MediaAlpha
— — — 686.0686.0 
Commission revenues (2)
— 232.5 — 8.3 240.8 
Other revenues2.5 52.6 .3 13.9 69.3 
Total revenues68.5 285.1 45.7 781.4 1,180.7 
Insurance acquisition expenses7.0 — — — 7.0 
Cost of sales— — — 11.3 11.3 
General and administrative expenses56.8 176.9 11.8 141.9 387.4 
Broker commission expense— 75.3 — — 75.3 
Change in fair value of contingent
   consideration
— (3.3)— — (3.3)
Amortization of other intangible assets— 26.7 .3 1.3 28.3 
Interest expense— 22.1 6.0 1.4 29.5 
Total expenses63.8 297.7 18.1 155.9 535.5 
Pre-tax income (loss)$4.7 $(12.6)$27.6 $625.5 $645.2 
(1)    BAM manages its affairs on a statutory accounting basis. BAM’s statutory surplus includes the BAM Surplus Notes and is not reduced by accruals of interest expense on the BAM Surplus Notes. BAM’s statutory surplus is reduced only after a payment of principal or interest has been approved by the NYDFS.
(2)    Approximately 19% of NSM’s commission revenue was associated with one single carrier.
F - 69


Millions
HG Global/BAM (1)
NSM
Kudu (2)
MediaAlpha (3)
Other
Operations
Total
Year Ended December 31, 2019  
Earned insurance premiums$16.3 $— $— $— $— $16.3 
Net investment income21.6 — 14.7 — 43.4 79.7 
Net realized and unrealized
   investment gains (losses)
27.1 — 6.3 — 219.8 253.2 
Net realized and unrealized investment
   gains from investment in MediaAlpha
— — — — 180.0 180.0 
Gain from deconsolidation from
   MediaAlpha
— — — — 67.5 67.5 
Advertising and commission revenues (4)
— 193.4 — 48.8 6.9 249.1 
Other revenues1.6 39.7 .2 — 6.1 47.6 
Total revenues66.6 233.1 21.2 48.8 523.7 893.4 
Insurance acquisition expenses5.7 — — — — 5.7 
Cost of sales— — — 40.6 7.5 48.1 
General and administrative expenses50.9 132.2 10.1 12.5 122.5 328.2 
Broker commission expense— 64.8 — — — 64.8 
Change in fair value of contingent
   consideration
— 2.1 — — — 2.1 
Amortization of other intangible assets— 19.4 .2 1.6 .6 21.8 
Interest expense— 16.7 .1 .2 .6 17.6 
Total expenses56.6 235.2 10.4 54.9 131.2 488.3 
Pre-tax income (loss)$10.0 $(2.1)$10.8 $(6.1)$392.5 $405.1 
(1)    BAM manages its affairs on a statutory accounting basis. BAM’s statutory surplus includes the BAM Surplus Notes and is not reduced by accruals of interest expense on the BAM Surplus Notes. BAM’s statutory surplus is reduced only after a payment of principal or interest has been approved by the NYDFS.
(2)    Kudu’s results are from April 4, 2019, the date of the Kudu Transaction, to December 31, 2019.
(3)    MediaAlpha’s results are from January 1, 2019 to February 26, 2019, the date of the 2019 MediaAlpha Transaction.
(4)    Approximately 17% of NSM’s commission revenue was associated with one single carrier.

Millions
Selected Balance Sheet Data
Millions
Selected Balance Sheet Data
HG Global/BAMArkNSMKuduOther
Operations
Held for SaleTotal
December 31, 2021:  
Millions
Selected Balance Sheet Data
Millions
Selected Balance Sheet Data
HG Global/BAMArkKuduOther
Operations
Total
December 31, 2023:December 31, 2023:  
Total investmentsTotal investments$966.5 $1,562.1 $— $669.5 $1,067.2 $— $4,265.3 
Total assetsTotal assets$1,044.8 (1)$3,027.0 $977.3 $727.1 $1,208.4 (2)$16.1 $7,000.7 
Total assets
Total assets
Total liabilities
Total liabilities
Total liabilitiesTotal liabilities$321.9 (2)$2,122.4 $495.3 $261.0 $95.4 $— $3,296.0 
Total White Mountains’s
common shareholders’ equity
Total White Mountains’s
common shareholders’ equity
$838.0 (2)$673.9 $465.3 $453.7 $1,101.1 (2)$16.1 $3,548.1 
Non-controlling interest$(115.1)$230.7 $16.7 $12.4 $11.9 $— $156.6 
December 31, 2020:  
Noncontrolling interest
December 31, 2022:December 31, 2022:  
Total investmentsTotal investments$919.9 $— $— $400.6 $1,618.5 $— $2,939.0 
Total assetsTotal assets$1,017.8 (1)$— $999.6 $430.2 $2,381.5 (2)$2.3 $4,831.4 
Total assets
Total assets
Total liabilities
Total liabilities
Total liabilitiesTotal liabilities$291.5 (2)$— $491.8 $96.3 $133.9 $— $1,013.5 
Total White Mountains’s
common shareholders’ equity
Total White Mountains’s
common shareholders’ equity
$836.1 (2)$— $490.7 $331.6 $2,245.3 (2)$2.3 $3,906.0 
Non-controlling interest$(109.8)$— $17.1 $2.3 $2.3 $— $(88.1)
Noncontrolling interest
(1) As of December 202131, 2023 and 2020,2022, total assets in the HG Global/BAM segment reflected the elimination of $364.6$322.2 and $388.2$340.0 of BAM Surplus Notes issued to HG Global and its subsidiaries and $157.6$174.5 and $155.7$157.9 in accrued interest related to the BAM Surplus Notes.
(2) HG Global preferred dividends payable to White Mountains’s subsidiaries is eliminated in White Mountains’s consolidated financial statements. For segment reporting, the HG Global preferred dividends payable to White Mountains’s subsidiaries included within the HG Global/BAM segment are eliminated against the offsetting receivable included within the Other Operations segment and therefore added back to White Mountains’s common shareholders’ equity within the HG Global/BAM segment. As of December 31, 20212023 and 2020,2022, the HG Global preferred dividends payable to White Mountains’s subsidiaries was $400.5$399.8 and $363.9.

F - 70


In compliance with ASC 606, Revenues from Contracts with Customers, the following tables present White Mountains’s total revenues by revenue source:

MillionsHG Global/BAMArkNSMKuduOther
Operations
Total
Year Ended December 31, 2021
Commission and other revenue
Specialty Transportation (1)
$— $— $97.2 $— $— $97.2 
Pet— — 76.3 — — 76.3 
United Kingdom— — 53.1 — — 53.1 
Real Estate— — 34.4 — — 34.4 
Social Services— — 33.9 — — 33.9 
Other— — 35.5 — 9.6 45.1 
Total commission and other revenue— — 330.4 — 9.6 340.0 
Products and service revenues— — — — 87.5 87.5 
Revenues from contracts with customers— — 330.4 — 97.1 427.5 
Other (2)
23.0 668.5 — 134.0 (308.2)517.3 
Total revenues$23.0 $668.5 $330.4 $134.0 $(211.1)$944.8 
(1) Includes the results of J.C. Taylor from August 6, 2021, the date of the J.C. Taylor transaction.
(2) Other revenues consist of premiums, investment income, investment gains and losses and other revenues outside the scope of ASC 606, Revenues from Contracts with Customers.


MillionsHG Global/BAMNSMKuduOther
Operations
Total
Year Ended December 31, 2020
Commission and other revenue
Specialty Transportation$— $85.5 $— $— $85.5 
Pet— 55.0 — — 55.0 
United Kingdom— 49.4 — — 49.4 
Real Estate— 44.9 — — 44.9 
Social Services— 28.9 — — 28.9 
Other— 21.4 — 8.3 29.7 
Total commission and other revenue— 285.1 — 8.3 293.4 
Products and service revenues— — — 14.5 14.5 
Revenues from contracts with customers— 285.1 — 22.8 307.9 
Other (1)
68.5 — 45.7 758.6 872.8 
Total revenues$68.5 $285.1 $45.7 $781.4 $1,180.7 
(1)    Other revenues consist of premiums, investment income, investment gains and losses and other revenues outside the scope of ASC 606, Revenues from Contracts with Customers.

F - 71


MillionsHG Global/BAMNSM
Kudu (2)
MediaAlpha (3)
Other
Operations
Total
Year Ended December 31, 2019
Commission and other revenue
Specialty Transportation$— $77.6 $— $— $— $77.6 
United Kingdom— 45.9 — — — 45.9 
Pet— 30.0 — — — 30.0 
Real Estate— 34.7 — — — 34.7 
Social Services— 25.9 — — — 25.9 
Other— 19.0 — — 6.9 25.9 
Total commission and other revenue— 233.1 — — 6.9 240.0 
Advertising revenues— — — 48.8 — 48.8 
Product and service revenues— — 0— 5.5 5.5 
Revenues from contracts with customers— 233.1 — 48.8 12.4 294.3 
Other (1)
66.6 — 21.2 — 511.3 599.1 
Total revenues$66.6 $233.1 $21.2 $48.8 $523.7 $893.4 
(1) Other revenues consist of premiums, investment income, investment gains and losses and other revenues outside the scope of ASC 606, Revenues from Contracts with Customers.
(2)    Kudu’s results are from April 4, 2019, the date of the Kudu Transaction, to December 31, 2019.
(3)    MediaAlpha’s results are from January 1, 2019 to February 26, 2019, the date of the 2019 MediaAlpha Transaction.$341.4.

Note 17.16. Equity Method Eligible Investments

White Mountains’s equity method eligible investments include Kudu’s Participation Contracts, White Mountains’s investment in MediaAlpha, PassportCard/DavidShield, Elementum Holdings, L.P. and certain other unconsolidated entities, including Kudu’s Participation Contracts, private equity funds and hedge funds in which White Mountains has the ability to exert significant influence over the investee’s operating and financial policies.
The following table presents the ownership interests and carrying values of White Mountains’sMountain’s equity method eligible investments as of December 31, 20212023 and 2020:2022:

December 31, 2021December 31, 2020
MillionsOwnership InterestCarrying ValueOwnership InterestCarrying Value
Kudu Participation Contracts (1)
3.2 - 32.0%$669.5 3.2 - 35.0%$400.6 
December 31, 2023December 31, 2023December 31, 2022
$ in Millions$ in MillionsOwnership InterestCarrying ValueOwnership InterestCarrying Value
Kudu’s Participation Contracts (1)
Investment in MediaAlphaInvestment in MediaAlpha28.0 %261.6 35.0 %802.2 
PassportCard/DavidShieldPassportCard/DavidShield53.8 %120.0 53.8 %95.0 
Elementum Holdings, L.P.Elementum Holdings, L.P.29.7 %45.0 28.9 %55.1 
Other equity method eligible investments, at fair valueOther equity method eligible investments, at fair valueUnder 50.0%109.3 Under 50.0%132.2 
Other equity method eligible investments, at fair valueOther equity method eligible investments, at fair value50.0% and over17.8 50.0% and over15.2 
(1) Ownership interest generally references basic ownership interest with the exception of Kudu’s Participation Contracts, which are non-controllingnoncontrolling equity interests in the form of revenue and earnings participation contracts.

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For the years ended December 31, 2021, 20202023, 2022 and 2019,2021, White Mountains received dividend and income distributions from equity method eligible investments of $56.2$67.0 million, $95.0$68.9 million and $14.8$56.2 million, which were recorded within net investment income in the consolidated statementstatements of operations.
As a result of the 2019 MediaAlpha Transaction, White Mountains deconsolidated MediaAlpha as of February 26, 2019. Upon deconsolidation, White Mountains’s investment in MediaAlpha met the criteriaSubsequent to be accounted for under the equity method or under the fair value option. White Mountains elected the fair value option. White Mountains’s consolidated statement of comprehensive income and its segment disclosures include MediaAlpha’s results of operations for the period from January 1, 2019 through February 26, 2019. Following the MediaAlpha IPO, White Mountains’s investment in MediaAlpha is accounted for at fair value based on the publicly traded share price of MediaAlpha’s common stock and White Mountains presents its investment in MediaAlpha as a separate line item on the balance sheet. See Note 23“Significant Transactions”“Investment Securities”.
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For the period from February 26, 2019 to December 31, 2019 and for the year ended December 31, 2020,2021, MediaAlpha was considered a significant subsidiary. For the period from February 26, 2019 to December 31, 2019, MediaAlpha’s total revenues, total expenses, and net income were $359.2 million, $336.3 million, and $22.9 million.
The following tables present summarized financial information for MediaAlpha as of December 31, 20212023 and 20202022 and for the years ended December 31, 2021, 2020,2023, 2022, and 2019:2021:
December 31,
December 31,
December 31,
December 31,
Millions
Millions
MillionsMillions20212020
Balance sheet data:Balance sheet data:
Balance sheet data:
Balance sheet data:
Total assets
Total assets
Total assetsTotal assets$289.8 $210.3 
Total liabilitiesTotal liabilities$351.4 $315.5 
Total liabilities
Total liabilities

Year Ended December 31,
Millions20212020
2019 (1)
Income statement data:
Total revenues$645.3 $584.8 $408.0 
Total expenses$653.8 $574.2 $390.2 
Net income (loss)$(8.5)$10.6 $17.8 
(1) For the year ended December 31, 2019, MediaAlpha recorded out of period adjustments that increased (decreased) total revenues by $0.1, total expenses by $1.2 and net income by $(1.1). The adjustments primarily related to MediaAlpha’s accounting for its equity-based compensation and amortization of other intangible assets. White Mountains has evaluated the impact of the adjustments and concluded that they are not material, individually and in the aggregate, to current or prior period financial statements.
Year Ended December 31,
Millions202320222021
Income statement data:
Total revenues$388.1 $459.1 $645.3 
Total expenses$444.7 $531.5 $653.8 
Net income (loss)$(56.6)$(72.4)$(8.5)

The following tables present aggregated summarized financial information for White Mountains’s investments in equity method eligible unconsolidated entities, excluding MediaAlpha:

December 31,
December 31,
December 31,
December 31,
Millions
Millions
MillionsMillions20212020
Balance sheet data(1):
Balance sheet data(1):
Balance sheet data(1):
Balance sheet data(1):
Total assets
Total assets
Total assetsTotal assets$1,845.7 $1,328.5 
Total liabilitiesTotal liabilities$373.4 $228.7 
Total liabilities
Total liabilities
(1) Financial data for White Mountains’s equity method eligible investees is generally reported on a one-quarter lag.
Year Ended December 31,
Year Ended December 31,
Year Ended December 31,
Year Ended December 31,
Millions
Millions
MillionsMillions202120202019
Income statement data(1):
Income statement data(1):
Income statement data(1):
Income statement data(1):
Total revenues
Total revenues
Total revenuesTotal revenues$987.4 $526.5 $344.6 
Total expensesTotal expenses$418.7 $325.9 $88.3 
Total expenses
Total expenses
Net income (loss)Net income (loss)$568.7 $201.7 $255.1 
Net income (loss)
Net income (loss)
(1) Financial data for White Mountains’s equity method eligible investees is generally reported on a one-quarter lag.

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Note 18.17. Variable Interest Entities

Under GAAP, White Mountains is required to consolidate any entity in which it holds a controlling financial interest. A controlling financial interest is usually in the form of an investment representing the majority of the subsidiary’s voting interests. However, a controlling financial interest may also arise from a financial interest in a VIE through arrangements that do not involve ownership of voting interests. A VIE is a legal entity that (i) does not have sufficient equity at risk to finance its activities without additional financial support; (ii) is structured such that equity investors, as a group, lack the power, through voting or similar rights, to direct the activities that most significantly impact the entity’s economic performance; (iii) is structured such that the equity investors lack the obligation to absorb losses of, or the right to receive returns from, the entity; or (iv) is structured with non-substantive voting rights. White Mountains determines whether an entity is a VIE at the inception of its variable interest in the entity and upon the occurrence of certain reconsideration events.
White Mountains consolidates a VIE if it determines that it is the primary beneficiary. The primary beneficiary is defined as the entity that holds a variable interest that gives it both the power to direct the VIE’s activities that most significantly impact its economic performance and the obligation to absorb losses of, or the right to receive returns from, the VIE that could potentially be significant to the VIE. The identification of the primary beneficiary of a VIE may require significant assumptions and judgment. When White Mountains determines it has a variable interest in a VIE, it determines whether it is the primary beneficiary of that VIE by performing an analysis that principally considers: (i) the VIE’s purpose and design, including the risks the VIE was designed to create and pass through to its variable interest holders; (ii) the VIE’s capital structure; (iii) the identification of the activities that most significantly impact the VIE’s economic performance; (iv) the governance provisions and other contractual arrangements between the VIE and its variable interest holders and other parties involved with the VIE; and (v) related party relationships. At inception of its variable interest in the VIE as well as on an ongoing basis, White Mountains performs qualitative assessments of its VIEs to determine whether White Mountains is the primary beneficiary of a VIE.

BAM

BAM is the first and only mutual municipal bond insurance company in the United States. HG Global, together with its subsidiaries, funded the initial capitalization of BAM through the purchase of $503.0 million of the BAM Surplus Notes and, through its reinsurance subsidiary HG Re, provides up to 15%-of-par, first loss reinsurance protection for policies underwritten by BAM. As a mutual insurance company, BAM is owned by and operated for the benefit of its members. BAM charges anmembers, the municipalities that purchase BAM’s insurance premium on each municipal bond insurance policy it writes. A portionfor their debt issuances. As of the premium is an MSC and the remainder is a risk premium. In the event of a municipal bond refunding, a portion of the MSC from the original issuance can be reutilized, in effect serving as a credit against the total insurance premium on the refunding of the municipal bond. Issuers of debt insured by BAM areDecember 31, 2023, BAM’s members of BAM so long as any of their BAM-insured debt is outstanding. As members, they have certain interests in BAM, including the right to vote for BAM’s directors and to receive dividends in the future, if declared.
Thecontributed equity capital at risk funded by BAM’s members is not sufficient to fund its operations without the additional financial support provided bythrough MSC of $545.2 million. However, the BAM Surplus Notes and accordingly,remain a significant portion of BAM’s statutory capital. Accordingly, White Mountains has determined that BAM is considereda VIE.
BAM’s underwriting process was determined to be a VIE.
At inception,the activity that most significantly impacts BAM’s economic performance. BAM’s underwriting guidelines define the types of credits that BAM and HG Re also entered into the FLRT. HG Re provides first loss protection up to 15%-of-par outstanding on each municipal bond insured by BAM. For capital appreciation bonds, par is adjustedmay insure. Pursuant to the estimated equivalent par value for current interest paying bonds. In return, BAM cedes upFLRT, BAM’s underwriting guidelines may only be amended with the consent of HG Re. As a result, White Mountains concluded it has the power to 60% ofdirect BAM’s activities that most significantly impact its economic performance and it is the risk premium charged for insuring the municipal bond, net of a ceding commission. HG Re’s obligations under the FLRT are limited to the assets in the Regulation 114 Trust and the Supplemental Trust.  Lossesprimary beneficiary. Accordingly, White Mountains is required to be reimbursed under the FLRT are subject to an aggregate limit equal to the assets heldconsolidate BAM’s results in the Collateral Trusts at any point in time.  In addition, under the FLRT, HG Holdings Ltd, a subsidiary of HG Global, has the right to designate 2 directors for election to BAM’s board of directors.
its financial statements. Since BAM is owned by its members, its equity and results of operations are included in non-controllingnoncontrolling interests. However,
BAM’s assets can be used only to settle BAM’s obligations, and general creditors of BAM have no recourse to the Company or HG Global. HG Re’s obligations to BAM under the FLRT are subject to an aggregate limit equal to the assets in the Collateral Trusts at any point in time.

WM Outrigger Re

White Mountains has determined that Outrigger Re Ltd. and WM Outrigger Re are VIEs. White Mountains is required to consolidate BAM’s results in its financial statements because BAM is a VIE for whichnot the primary beneficiary of Outrigger Re Ltd. or the other segregated accounts. White Mountains is the primary beneficiary.beneficiary of WM Outrigger Re, as it has both the power to direct the activities that most significantly impact WM Outrigger Re’s economic performance and the obligation to absorb losses and the right to receive returns that could potentially be significant to WM Outrigger Re. As a result, White Mountains consolidates WM Outrigger Re’s results in its financial statements. The assets of WM Outrigger Re can only be used to settle the liabilities of WM Outrigger Re, and there is no recourse to the Company for any creditors of WM Outrigger Re.

Elementum
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PassportCard/DavidShield

On MayAs of December 31, 2019,2023, White Mountains acquired a 30.0% limited partnershipMountains’s ownership interest in Elementum for $55.1 million.PassportCard/DavidShield was 53.8%. White Mountains has determined that Elementum is a VIEboth PassportCard and DavidShield are VIEs but that White Mountains is not the primary beneficiary. White Mountains’s ownership interest gives White Mountains the ability to exert significant influence over the significant financialbeneficiary and operating activities of Elementum. Accordingly, Elementum meets the criteria to be accounted for under the equity method. White Mountains has taken the fair value option for its investment in Elementum. Changes in the fair value of Elementum are recorded in realized and unrealized investment gains (losses). As of December 31, 2021, White Mountains’s maximum exposure to loss on its investment in Elementum is limited to the carrying value of $45.0 million.

PassportCard/DavidShield

On January 24, 2018, White Mountains acquired a 50.0% ownership interest in DavidShield, its joint venture partner in PassportCard. As part of the transaction, White Mountains reorganized its equity stake intherefore does not consolidate either PassportCard so that White Mountains and its partner in DavidShield would each own 50.0% of both businesses. To facilitate the transaction, White Mountains provided financing to its partner in the form of a non-interest bearing loan that is secured by the partner’s equity in PassportCard/DavidShield. The gross purchase price for the 50.0% interest in DavidShield was $41.8 million, or $28.3 million net of the financing provided for the restructuring.
On May 7, 2020, White Mountains made an additional $15.0 million investment in PassportCard/DavidShield to support
operations through the ongoing COVID-19 pandemic. The transaction increased White Mountains’s ownership interest from
50.0% to 53.8%, but had no impact on the governance structure of the companies, including White Mountains’s board representation or other investor rights.DavidShield. The governance structures for both PassportCard and DavidShield were designed to give White Mountains and its co-investor equal power to make the decisions that most significantly impact operations.
As a result of the transaction, White Mountains’s re-evaluated its accounting treatment for its investment in PassportCard/DavidShield. Because White Mountains does not have the unilateral power to direct the operations of PassportCard or DavidShield White Mountainsand does not hold a controlling financial interest and does not consolidate either entity.interest. White Mountains’s ownership interest gives White Mountains the ability to exert significant influence over the significant financial and operating activities of PassportCard/DavidShield. Accordingly, White Mountains’s investment in PassportCard/DavidShield meets the criteria to be accounted for under the equity method. White Mountains has taken the fair value option for its investment in PassportCard/DavidShield. Changes in the fair value of PassportCard/DavidShield are recorded in net realized and unrealized investment gains (losses). As of December 31, 2021,2023, White Mountains’s maximum exposure to loss on its equity investment in PassportCard/DavidShield and the non-interest bearingnon-interest-bearing loan to its partner is limited to the total carrying value of $129.4$159.6 million.

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KuduElementum

On April 4, 2019,As of December 31, 2023, White Mountains’s ownership interest in Elementum was 26.6%. White Mountains completed the Kudu Transaction for cash consideration of $81.4 million. White Mountains recognized total assets acquired of $155.5 million, including $7.6 million of goodwill and $2.2 million of other intangible assets, total liabilities assumed of $0.8 million and non-controlling interest of $1.5 million. As a result of the Kudu Transaction, White Mountains’s basic unit ownership of Kudu increased from 49.5% to 99.1% (42.7% to 85.4% on a fully diluted, fully converted basis), and White Mountains began consolidating Kudu as a reportable segment in its financial statements during the second quarter of 2019. White Mountains’s consolidated financial statements and its segment disclosures include Kudu’s results for the period from April 4, 2019 to December 31, 2019.
For periods prior to the Kudu Transaction, White Mountainshas determined that Kudu wasElementum is a VIE but that White Mountains wasis not the primary beneficiary.beneficiary and therefore does not consolidate Elementum. White Mountains’s ownership interest gavegives White Mountains the ability to exert significant influence over the significant financial and operating activities of Kudu.Elementum. Accordingly, for the year ended December 31, 2018, Kudu metElementum meets the criteria to be accounted for under the equity method. White Mountains tookhas taken the fair value option for its investment in Kudu, measuring its investmentElementum. Changes in Kudu atthe fair value using NAV as a practical expedient with changes thereinof Elementum are recorded in net realized and unrealized investment gains (losses) for the year ended. As of December 31, 2018.2023, White Mountains’s maximum exposure to loss on its limited partnership interest in Elementum is the carrying value of $35.0 million.

Limited Partnerships

White Mountains’s investments in limited partnerships are generally considered VIEs because the limited partnership interests do not have substantive kick-out rights or participating rights. White Mountains does not have the unilateral power to direct the operations of these limited partnerships, and therefore White Mountains is not the primary beneficiary and does not consolidate the limited partnerships. White Mountains has taken the fair value option for its investments in limited partnerships, which are generally measured at NAV as a practical expedient. As of December 31, 2023, White Mountains’s maximum exposure to loss on its investments in limited partnerships is the carrying value of $248.6 million.

Note 19.18. Fair Value of Financial Instruments

    White Mountains records its financial instruments at fair value with the exception of debt obligations which are recorded as debt at face value less unamortized original issue discount. See Note 7 — “Debt”.
    The following tablestable presents the fair value and carrying value of these financial instruments as of December 31, 20212023 and 2020:2022:
December 31, 2021December 31, 2020
December 31, 2023December 31, 2023December 31, 2022
MillionsMillionsFair ValueCarrying ValueFair ValueCarrying ValueMillionsFair ValueCarrying ValueFair ValueCarrying Value
HG Global Senior Notes
Ark 2007 Subordinated NotesArk 2007 Subordinated Notes$27.6 $30.0 $— $— 
Ark 2021 Subordinated NotesArk 2021 Subordinated Notes$162.8 $155.9 $— $— 
NSM Bank Facility$275.8 $271.2 $279.3 $271.3 
Other NSM debt$1.0 $.9 $1.3 $1.3 
Kudu Credit FacilityKudu Credit Facility$246.8 $218.2 $— $— 
Kudu Bank Facility$ $ $89.3 $86.3 
Other Operations debtOther Operations debt$17.7 $16.8 $18.8 $17.5 

The fair value estimates for the HG Global Senior Notes, Ark 2007 Subordinated Notes, the Ark 2021 Subordinated Notes, NSM Bank Facility, the Other NSM debt, the Kudu Credit Facility, the Kudu Bank Facility and Other Operations debt have been determined based on a discounted cash flow approach and are considered to be Level 3 measurements.
For the fair value level measurements associated with White Mountains’s investment securities see Note 3 — “Investment Securities.” For the fair value level measurements associated with White Mountains’s derivative instruments see Note 9 — “Derivatives.”

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Note 20.19. Commitments and Contingencies

White Mountains leases certain office spaces under non-cancellable operating leases that expire on various dates through 2022. Rental expense for all of White Mountains’s locations was $9.9 million, $7.7 million and $7.2 million for the years ended December 31, 2021, 2020 and 2019. White Mountains also has various other lease obligations that are immaterial in the aggregate.  White Mountains’s future annual minimum rental payments required under non-cancellable leases, which are primarily for office space, are $10.9 million, $9.9 million, $8.5 million, and $23.0 million for the years ending December 31, 2022, 2023, 2024 and 2025 and thereafter.
White Mountains also has future binding commitments to fund certain other long-term investments. These commitments, which totaled $44.0 million as of December 31, 2021, do not have fixed funding dates.

Legal Contingencies

White Mountains, and the insurance industry in general, is routinely subject to claims relatedclaims-related litigation and arbitration in the normal course of business, as well as litigation and arbitration that do not arise from, nor are directly related to, claims activity. White Mountains’s estimates of the costs of settling matters routinely encountered in claims activity are reflected in the reserves for unpaid loss and LAE. See Note 5 — “Losses“Loss and Loss Adjustment Expense Reserves”Reserves.”.
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White Mountains considers the requirements of ASC 450 when evaluating its exposure to non-claims relatednon-claims-related litigation and arbitration. ASC 450 requires that accruals be established for litigation and arbitration if it is probable that a loss has been incurred and it can be reasonably estimated. ASC 450 also requires that litigation and arbitration be disclosed if it is probable that a loss has been incurred or if there is a reasonable possibility that a loss may have been incurred. White Mountains does not have any current non-claims relatednon-claims-related litigation that may have a material adverse effect on White Mountains’s financial condition, results of operations or cash flows.

Note 21.20. Held for Sale and Discontinued Operations

NSM

On August 1, 2022, White Mountains closed the NSM Transaction. See Note 2 — “Significant Transactions.” As a result of the NSM Transaction, the assets and liabilities of NSM Group have been presented in the balance sheet as held for sale for periods prior to the closing of the transaction, and the results of operations for NSM Group have been classified as discontinued operations in the statements of operations and comprehensive income through the closing of the transaction. Prior period amounts have been reclassified to conform to the current period’s presentation.

Sirius Group

On April 18, 2016, White Mountains completed the sale of Sirius International Insurance Group, Ltd. (“Sirius Group”)to CM International Pte. Ltd. and CM Bermuda Limited (collectively, “CMI”). In connection with the sale, White Mountains indemnified Sirius Group against the loss of certain interest deductions claimed by Sirius Group related to periods prior to the sale of Sirius Group to CMI that had been disputed by the Swedish Tax Agency (STA). In late October 2018, the Swedish Administrative Court ruled against Sirius Group on its appeal of the STA’s denial of these interest deductions. As a result, in 2018 White Mountains recorded a loss of $17.3 million within net (loss) gain on sale of discontinued operations reflecting the value of these interest deductions.
As of December 31, 2020, White Mountains recorded aMountains’s liability of $18.7 million, related to the tax indemnification provided in connection with the
sale of Sirius Group in 2016.2016 was $18.7 million. In April 2021, the STA informed the Swedish Administrative Court of Appeal that Sirius Group should prevail in its appeal and that the interest deductions should not be disallowed. In June 2021, the Swedish Administrative Court of Appeal ruled in Sirius Group’s favor. DuringFor the year ended December 31, 2021, White Mountains recorded a gain of $17.6 million in discontinued operations to reverse the accrued liability accrued as of December 31, 2020 and a $1.1 million gain related to foreign currency translation. During 2020, White Mountains recorded an increase in the liability of $2.2 million related to foreign currency translation that was included within net loss on sale of discontinued operations.

NSM

On April 12, 2021, NSM completed the sale of the Fresh Insurance motor business for net proceeds of £1.1 million ($1.5 million based upon the foreign exchange spot rate as of the transaction date). The assets and liabilities included in the transaction, were measured at their estimated fair values, net of disposal and classified as held for sale at March 31, 2021. However, the transaction did not meet the criteria to be classified as discontinued operations. In the first quarter of 2021, NSM recorded a loss of $28.7 million related to the sale.

Other

As of December 31, 2021, White Mountains classified one of the Other Operating Businesses, which included $16.1 million of insurance licenses, investments and cash, as assets held for sale.
As of December 31, 2017, White Mountains classified its Guilford, Connecticut property, which consists of an office building and adjacent land, as held for sale. On August 20, 2020, the office building was sold for $2.3 million. For the year ended December 31, 2020, White Mountains recognized $0.1 million of realized loss on the sale of the office building.
As of December 31, 2020, the adjacent land was measured at its estimated fair value, net of costs of disposal, of $0.7 million. On September 17, 2021, the adjacent land was sold for $0.7 million and White Mountains recognized $0.1 million of realized loss within other revenues in the Other Operations segment.
As of December 31, 2020, assets held for sale also includes a corporate aircraft. The aircraft was measured at its carrying value of $1.7 million, which is lower than its estimated fair value. On February 12, 2021, the corporate aircraft was sold for $2.1 million and White Mountains recorded $0.5 million of realized gains within other revenues in the Other Operations segment.

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Net Income (Loss) from Discontinued Operations
The following summarizes the results of operations, including related income taxes associated with the businesses classified as discontinued operations for the years ended December 31, 2022, and 2021:
December 31,
Millions
2022 (1)
2021
Revenues 
Commission revenues$176.9 $258.0 
Other revenues48.1 72.4 
Total revenues - NSM Group225.0 330.4 
Expenses
General and administrative expenses126.8 190.4 
Broker commission expenses52.9 80.2 
Change in fair value of contingent consideration.1 1.0 
Amortization of other intangible assets9.1 35.2 
Loss on assets held for sale— 28.7 
Interest expense12.1 23.3 
Total expenses - NSM Group201.0 358.8 
Pre-tax income (loss) from discontinued operations - NSM Group24.0 (28.4)
Income tax (expense) benefit(7.6)5.8 
Net income (loss) from discontinued operations, net tax - NSM Group16.4 (22.6)
Net gain (loss) from sale of discontinued operations, net of
   tax - NSM Group
886.8 — 
Net gain (loss) from sale of discontinued operations, net of
   tax - Sirius Group
— 18.7 
Total income (loss) from discontinued operations, net of tax903.2 (3.9)
Net (income) loss from discontinued operations
   attributable to noncontrolling interests
(.7)1.0 
Total income (loss) from discontinued operations attributable to
   White Mountains’s common shareholders
902.5 (2.9)
Other comprehensive income (loss) from discontinued operations,
   net of tax - NSM Group
(5.2).2 
Net gain (loss) from foreign currency translation from sale of discontinued
   operations, net of tax - NSM Group
2.9 — 
Comprehensive income (loss) from discontinued operations900.2 (2.7)
Other comprehensive (income) loss from discontinued operations attributable
   to noncontrolling interests
.2 (.1)
Comprehensive income (loss) from discontinued operations attributable
   to White Mountains’s common shareholders
$900.4 $(2.8)
(1) As a result of the NSM Transaction, the results of operations for NSM Group are presented for the period from January 1, 2022 to August 1, 2022.
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Net Change in Cash from Discontinued Operations
The following summarizes the net change in cash associated with the businesses classified as discontinued operations for the years ended December 31, 2022 and 2021:
Year Ended December 31,
Millions20222021
Net cash provided from (used for) operations$38.7 $42.3 
Net cash provided from (used for) investing activities7.1 (56.5)
Net cash used from (used for) financing activities(17.5)(1.0)
Effect of exchange rate changes on cash4.0 .2 
Net change in cash during the period32.3 (15.0)
Cash balances at beginning of period (includes restricted cash of $89.2 and $78.4 )111.6 126.6 
Cash sold as part of the sale of NSM Group (includes restricted cash of $105.1 and $0.0)(143.9)— 
Cash balances at end of period (includes restricted cash of $0.0 and $89.2)— 111.6 
Supplemental cash flows information:
Interest paid$(12.0)$(16.6)
Net income tax payments$— $— 

Earnings Per Share from Discontinued Operations

White Mountains calculates earnings per share using the two-class method, which allocates earnings between common and unvested restricted common shares. Both classes of shares participate equally in earnings on a per share basis. Basic earnings per share amounts are based on the weighted average number of common shares outstanding adjusted for unvested restricted common shares. Diluted earnings per share amounts are also impacted by the net effect of potentially dilutive common shares outstanding. The following table presents the Company’s computation of earnings per share for discontinued operations for the years ended December 31, 2021, 20202022 and 2019:2021:
Year Ended December 31,
202120202019
Year Ended December 31,Year Ended December 31,
202220222021
Basic and diluted earnings per share numerators (in millions):Basic and diluted earnings per share numerators (in millions):  
Net income (loss) attributable to White Mountains’s common shareholdersNet income (loss) attributable to White Mountains’s common shareholders$(275.4)$708.7 $414.5 
Less: total income (loss) from continuing operations, net of tax(294.1)711.0 413.7 
Net income (loss) from discontinued operations attributable to
White Mountains’s common shareholders
18.7 (2.3).8 
Net income (loss) attributable to White Mountains’s common shareholders
Net income (loss) attributable to White Mountains’s common shareholders
Less: net income (loss) from continuing operations
Less: net (income) loss from continuing operations attributable to noncontrolling interest
Total income (loss) from discontinued operations attributable to White Mountains’s
common shareholders (1)
Allocation of (earnings) losses to participating restricted common shares (1)(2)
Allocation of (earnings) losses to participating restricted common shares (1)(2)
(.2)— — 
Basic and diluted (loss) earnings per share numeratorsBasic and diluted (loss) earnings per share numerators$18.5 $(2.3)$.8 
Basic earnings per share denominators (in thousands):Basic earnings per share denominators (in thousands):  Basic earnings per share denominators (in thousands): 
Total average common shares outstanding during the periodTotal average common shares outstanding during the period3,079.0 3,122.2 3,181.6 
Average unvested restricted common shares (3)
Average unvested restricted common shares (3)
(36.5)(40.8)(40.5)
Basic earnings (loss) per share denominatorBasic earnings (loss) per share denominator3,042.5 3,081.4 3,141.1 
Diluted earnings per share denominator (in thousands):Diluted earnings per share denominator (in thousands):  Diluted earnings per share denominator (in thousands): 
Total average common shares outstanding during the periodTotal average common shares outstanding during the period3,079.0 3,122.2 3,181.6 
Average unvested restricted common shares (3)
Average unvested restricted common shares (3)
(36.5)(40.8)(40.5)
Diluted earnings (loss) per share denominatorDiluted earnings (loss) per share denominator3,042.5 3,081.4 3,141.1 
Diluted earnings (loss) per share denominator
Diluted earnings (loss) per share denominator
Basic (loss) earnings per share (in dollars) - discontinued operations:Basic (loss) earnings per share (in dollars) - discontinued operations:$6.07 $(.75)$.25 
Diluted (loss) earnings per share (in dollars) - discontinued operations:Diluted (loss) earnings per share (in dollars) - discontinued operations:$6.07 $(.75)$.25 
(1)Includes net income (loss) from discontinued operations, net of tax - NSM Group, net gain (loss) from sale of discontinued operations, net of tax - NSM Group, net gain (loss) from sale of discontinued operations, net of tax - Sirius Group and net (income) loss from discontinued operations attributable to noncontrolling interests.
(2) Restricted shares issued by White Mountains contain dividend participation features, and therefore, are considered participating securities.
(2)Net earnings attributable to White Mountains’s common shareholders, net of restricted share amounts, is equal to undistributed earnings for the years ended December 31, 2021, 2020 and 2019.
(3)Restricted common shares outstanding vest either in equal annual installments or upon a stated date. See Note 12 — “Employee Share-Based Incentive Compensation Plans”Plans.”.

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MANAGEMENT’S RESPONSIBILITY FOR FINANCIAL STATEMENTS
 
Management is responsible for the preparation and fair presentation of the financial statements included in this report.The financial statements have been prepared in conformity with GAAP in the United States.The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period.Actual results could differ from those estimates.
The Audit Committee of the Board, which is comprised entirely of independent, qualified directors, is responsible for the oversight of our accounting policies, financial reporting and internal control including the appointment and compensation of our independent registered public accounting firm.The Audit Committee meets periodically with management, our independent registered public accounting firm and our internal auditors to ensure they are carrying out their responsibilities.The Audit Committee is also responsible for performing an oversight role by reviewing our financial reports.Our independent registered public accounting firm and internal auditors have full and unlimited access to the Audit Committee, with or without management present, to discuss the adequacy of internal control over financial reporting and any other matters which they believe should be brought to their attention.


MANAGEMENT’S ANNUAL REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING
 
Management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934.There are inherent limitations in the effectiveness of any internal control over financial reporting, including the possibility of human error and the circumvention or overriding of internal control.Accordingly, even effective internal control over financial reporting can provide only reasonable assurance with respect to financial statement preparation.Further, an effective internal control environment as of a point in time may become inadequate in the future because of changes in conditions, or deterioration in the degree of compliance with the policies and procedures.
We assessed the effectiveness of White Mountains’s internal control over financial reporting as of December 31, 2021. Our assessment did not include an assessment of the internal control over financial reporting for certain recent acquisitions. These acquisitions were Ark Insurance Holdings Limited and its subsidiaries, J.C. Taylor Insurance and New Market Waste Solutions, LLC. The total assets and total revenues excluded from our assessment related to these acquisitions represented 39%, less than 1% and less than 1%, respectively, of White Mountains’s total assets as of December 31, 2021 and 71%, less than 1% and 6%, respectively, of White Mountains’s total revenue for the year ended December 31, 2021. 2023.In making our assessment, we used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control-Integrated Framework (2013).Based on this assessment, we have concluded that White Mountains maintained effective internal control over financial reporting as of December 31, 2021.2023.
PricewaterhouseCoopers LLP, the Company’s independent registered public accounting firm, has audited the effectiveness of White Mountains’s internal control over financial reporting as of December 31, 20212023 as stated in their report which appears on page F-79.F-74.

February 28, 202226, 2024



/s/ G. MANNING ROUNTREE /s/ REID T. CAMPBELLLIAM P. CAFFREY
Chief Executive Officer
(Principal Executive Officer)
 Executive Vice President and Chief Financial Officer
(Principal Financial Officer)



F - 7873


Report of Independent Registered Public Accounting Firm
 
To the Board of Directors and Shareholders of White Mountains Insurance Group, Ltd.

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of White Mountains Insurance Group, Ltd. and its subsidiaries (the “Company”) as of December 31, 20212023 and 2020,2022, and the related consolidated statements of operations, of comprehensive income, of shareholders' equity and of cash flows for each of the three years in the period ended December 31, 2021,2023, including the related notes and financial statement schedules listed in the accompanying index appearing after the signature page (collectively referred to as the “consolidated financial statements”). We also have audited the Company's internal control over financial reporting as of December 31, 2021,2023, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 20212023 and 2020,2022, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 20212023 in conformity with accounting principles generally accepted in the United States of America. Also, in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2021,2023, based on criteria established in Internal Control - Integrated Framework (2013) issued by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Annual Report on Internal Control over Financial Reporting. Our responsibility is to express opinions on the Company’s consolidated financial statements and on the Company's internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

As described in Management's Annual Report on Internal Control over Financial Reporting, management has excluded Ark Insurance Holdings Limited and its subsidiaries, J.C.Taylor Insurance, and New Market Waste Solutions, LLC from its assessment of internal control over financial reporting as of December 31, 2021 because they were acquired by the Company in purchase business combinations during 2021. We have also excluded Ark Insurance Holdings Limited and its subsidiaries, J.C. Taylor Insurance, and New Market Waste Solutions, LLC, from our audit of internal control over financial reporting. Ark Insurance Holdings Limited and its subsidiaries, J.C. Taylor Insurance, and New Market Waste Solutions, LLC. are majority-owned subsidiaries whose total assets and total revenues excluded from management’s assessment and our audit of internal control over financial reporting represent 39%, less than 1% and less than 1%, and 71%, less than 1% and 6%, respectively, of the related consolidated financial statement amounts as of and for the year ended December 31, 2021.

F - 7974


Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current period audit of the consolidated financial statements that were communicated or required to be communicated to the audit committee and that (i) relate to accounts or disclosures that are material to the consolidated financial statements and (ii) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

Goodwill Impairment Assessment - NSM Reporting Unit

As described in Notes 1, 2 and 4 to the consolidated financial statements, the Company acquired NSM Insurance HoldCo, LLC and its subsidiaries (collectively, “NSM”) in 2018 and NSM subsequently acquired net assets of KBK Insurance Group, Inc. (“KBK”) in 2018, Embrace Pet Insurance (“Embrace”) in 2019, and Kingsbridge Group Limited (“Kingsbridge”) in 2020. As of December 31, 2021, a significant portion of the $503.2 million NSM reporting unit goodwill is associated with these acquisitions. As disclosed by management, goodwill is reviewed for potential impairment on an annual basis, or whenever indications of potential impairment exist. The annual review first assesses whether qualitative factors indicate that the carrying value of goodwill may be impaired, and if it is more likely than not that an impairment may exist, then a quantitative analysis is performed to compare the fair value of a reporting unit with its carrying value. Both the annual qualitative assessment of potential impairment as well as the quantitative comparison of carrying value to estimated fair value involve management judgment. The use of discounted cash flow models, market comparisons and other valuation techniques, as well as assumptions, including revenue growth rates, are inherently subjective. If the carrying value had exceeded the estimated fair value, then an impairment charge would have been recognized through current period pre-tax income.

The principal considerations for our determination that performing procedures relating to the goodwill impairment assessment for the NSM reporting unit is a critical audit matter are (i) the significant judgment by management to determine the fair value of the reporting unit, which in turn led to a high degree of auditor judgment and subjectivity in applying procedures relating to the goodwill impairment assessment; (ii) the significant audit effort in evaluating the audit evidence relating to management’s discounted cash flow model and market comparisons valuation techniques and significant assumptions related to the revenue growth rates for the aforementioned entities within the NSM reporting unit; and (iii) the audit effort involved the use of professionals with specialized skill and knowledge.

F - 80


Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to management’s goodwill impairment assessment, including controls over the valuation of the NSM reporting unit, the discounted cash flow model and market comparisons valuation techniques, and development of significant assumptions related to the revenue growth rates. These procedures also included, among others (i) testing management’s process for developing the fair value of the reporting unit; (ii) evaluating the appropriateness of the discounted cash flow model and market comparisons valuation techniques; and for the aforementioned entities within the NSM reporting unit, (iii) testing the completeness and accuracy of the underlying data used in the discounted cash flow model; and (iv) evaluating the reasonableness of the significant assumptions related to the revenue growth rates. Evaluating the revenue growth rates involved evaluating whether the assumptions used by management were reasonable considering (i) the current and past performance of the reporting unit, (ii) the consistency with external market and industry data; and (iii) whether the assumptions were consistent with evidence obtained in other areas of the audit. Professionals with specialized skill and knowledge were used to assist in the evaluation of the appropriateness of the Company’s discounted cash flow model and market comparisons valuation techniques.

Valuation of Certain Other Long-Term Investments

As described in Notes 1 and 3 to the consolidated financial statements, the Company maintains various other non-controllingnoncontrolling equity interests in operating businesses accounted for at fair value within other long-term investments. The fair values of the most significant of these investments, classified within other long-term investments as of December 31, 2021,2023, consist of PassportCard Limited and DavidShield Life Insurance Agency (2000) Ltd. (collectively, PassportCard/DavidShield”) for $120.0 million; Elementum Holdings L.P. (“Elementum”) for $45.0 million;$150.0 million and certain participation contracts of Kudu Investment Management, LLC and its subsidiaries (collectively, “Kudu”) representing a portion of the total Kudu participation contracts of $669.5Kudu’s Participation Contracts of $890.5 million. As disclosed by management, they applied significant judgment in determining the fair value of these other long-term investments using discounted cash flow models, and in case of one of Kudu’s participation contracts, using a probability weighted expected return method, whichmodels. These valuations involved the use of key inputs with respect to (i) for PassportCard/DavidShield and Elementum, projections of future revenues and earnings, discount rates, and terminal revenue growth rates for PassportCard/DavidShield and (ii) for certain participation contracts of Kudu, projections of future revenues and earnings of Kudu’s clients, discount rates and terminal cash flow exit multiples and for onecertain of Kudu’s participation contracts, expected value to be received in a pending sale transaction.Participation Contracts.

The principal considerations for our determination that performing procedures relating to the valuation of certain other long-term investments is a critical audit matter are (i) the significant judgment by management to determine the fair value of these other long-term investments, which in turn led to a high degree of auditor judgment and subjectivity in performing procedures relating to the fair value measurement; (ii) the significant audit effort in evaluating the audit evidence relating to the discounted cash flow models and the key inputs related to (a) projections of future revenues and earnings for PassportCard/DavidShield, and Elementum, and (b) projections of future revenues and earnings of Kudu’s clients for certain participation contracts of Kudu;Kudu’s Participation Contracts; and (iii) the audit effort involved the use of professionals with specialized skill and knowledge.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to the valuation of certain other long-term investments, including controls over the Company’s discounted cash flow models and determination of key inputs. These procedures also included, among others, the involvement of professionals with specialized skill and knowledge to assist in developing an independent fair value range of each of the aforementioned investments and comparing management’s estimate to the independently developed range. Developing the independent estimate involved (i) testing the completeness and accuracy of data provided by management and (ii) evaluating management’s key inputs related to (a) projections of future revenues and earnings for PassportCard/DavidShield, and Elementum, and (b) projections of future revenues and earnings of Kudu’s clients for certain participation contracts of Kudu.

Acquisition of Ark Insurance Holdings Limited - Valuation of Syndicate Underwriting Capacity Intangible Asset

As described in Note 2 to the consolidated financial statements, the Company completed the acquisition of Ark Insurance Holdings Limited and its subsidiaries (Ark) in 2021, which resulted in a $175.7 million syndicate underwriting capacity intangible asset being recorded. The fair value of the syndicate underwriting capacity intangible asset was internally estimated based on the income approach. Significant inputs to the valuation model include estimates of growth in premium revenues, investment returns, claim costs, expenses, and discount rates based on a weighted average cost of capital.Kudu’s Participation Contracts.

F - 8175


The principal considerations for our determination that performing procedures relating to the valuation of the acquired Ark syndicate underwriting capacity intangible asset is a critical audit matter are (i) the significant judgment by management when developing their estimate, (ii) a high degree of auditor judgment, subjectivity, and effort in performing procedures and evaluating management’s significant assumptions related to the discount rate and growth in premium revenues, and (iii) the audit effort involved the use of professionals with specialized skill and knowledge.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to the acquisition accounting, including controls over management’s valuation of the syndicate underwriting capacity intangible asset and controls over the development of the significant assumptions related to the discount rate and growth in premium revenues. These procedures also included, among others (i) reading the purchase agreement and (ii) testing management’s process for estimating the fair value of the syndicate underwriting capacity intangible asset. Testing management’s process included evaluating the appropriateness of the income method, testing the completeness and accuracy of data used by management, and evaluating the reasonableness of the discount rate and growth in premium revenues significant assumptions. Professionals with specialized skill and knowledge were used to assist in the evaluation of the appropriateness of the income method and the reasonableness of the discount rate and growth in premium revenues significant assumptions.

Valuation of Loss and Loss Adjustment Expense Reserves - Ark Operating Segment

As described in Notes 1 and 5 to the consolidated financial statements, unpaid losses and loss adjustment expenses, including estimates for amounts incurred but not reported, are based on estimates of the ultimate costs of settling claims, including the effects of inflation and other societal and economic factors. Unpaid loss and loss adjustment expensesexpense reserves represent management’s best estimate of ultimate losses and loss adjustment expenses, net of estimated salvage and subrogation recoveries, if applicable. The Company’s loss and loss adjustment expense reserves as of December 31, 20212023 for the Ark operating segment were $894.7$1,605.1 million. Management estimates ultimate loss and loss adjustment expenses using various generally accepted actuarial methods applied to known losses and other relevant information. Ultimate loss and loss adjustment expenses are generally determined by extrapolation of claim emergence and settlement patterns observed in the past that can reasonably be expected to persist in the future. Management considers the Company’s own experience, particularly claims development experience, such as trends in case reserves, payments on and closing of claims, as well as changes in business mix and coverage limits, and external market data, available from organizations such as the Lloyd’s Market Association, consulting firms and other insurance and reinsurance companies, as the most important information for estimating its reserves. Ultimate loss and loss adjustment expenses for major losses and catastrophes are estimated based on the known and expected exposures to the loss event. Incurred but not reported reserves are adjusted as additional information becomes known or payments are made.

The principal considerations for our determination that performing procedures relating to the valuation of the loss and loss adjustment expense reserves for the Ark operating segment is a critical audit matter are (i) the significant judgment by management when developing their estimate, (ii) a high degree of auditor judgment, subjectivity, and effort in performing procedures and evaluating audit evidence related to the actuarial methods and inputs related to trends in case reserves, payments on and closing of claims, and changes in business mix and coverage limits, and (iii) the audit effort involved the use of professionals with specialized skill and knowledge.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included, among others, testing the completeness and accuracy of data provided by management and the relevance and reliability of the industry data, and the involvement of professionals with specialized skill and knowledge to assist in (i) evaluating the appropriateness of the actuarial methods used by management, (ii) evaluating the reasonableness of assumptions used by management to determine the Company’s reservereserves for loss and loss adjustment expenses, and (iii) developing an independent estimate of the reservereserves on a sample basis using historical data and loss development patterns, as well as industry data and other benchmarks, to develop an independent estimate and comparing the independent estimate to management’s actuarially determined reservereserves to evaluate the reasonableness of the reservereserves for loss and loss adjustment expenses.


/s/ PricewaterhouseCoopers LLP
Boston, MassachusettsAtlanta, Georgia 
February 28, 202226, 2024 
We have served as the Company’s auditor since 1999. 

F - 8276


SCHEDULE I

WHITE MOUNTAINS INSURANCE GROUP, LTD.
SUMMARY OF INVESTMENTS—OTHER THAN
INVESTMENTS IN RELATED PARTIES
AtAs of December 31, 20212023

MillionsCostCarrying
Value
Fair
Value
Fixed maturity investments:   
U.S. Government and agency obligations$212.1 $211.5 $211.5 
Debt securities issued by corporations993.3 992.9 992.9 
Municipal obligations276.4 291.9 291.9 
Mortgage and asset-backed securities277.2 277.6 277.6 
Collateralized loan obligations136.5 135.0 135.0 
Total fixed maturity investments1,895.5 1,908.9 1,908.9 
Short-term investments465.9 465.9 465.9 
Investment in MediaAlpha— 261.6 261.6 
Common equity securities - Industrial, Miscellaneous, and Other236.3 251.1 251.1 
Other long-term investments1,186.7 1,377.8 1,377.8 
Total investments$3,784.4 $4,265.3 $4,265.3 

MillionsCostCarrying
Value
Fair
Value
Fixed maturity investments:   
U.S. Government and agency obligations$209.0 $204.9 $204.9 
Debt securities issued by corporations1,085.9 1,045.0 1,045.0 
Municipal obligations275.1 260.9 260.9 
Mortgage and asset-backed securities417.2 389.4 389.4 
Collateralized loan obligations211.2 209.1 209.1 
Total fixed maturity investments2,198.4 2,109.3 2,109.3 
Short-term investments1,487.0 1,487.9 1,487.9 
Investment in MediaAlpha59.2 254.9 254.9 
Common equity securities:
Common equity securities - Industrial, Miscellaneous, and Other370.2 400.6 400.6 
Common equity securities - Exchange traded funds113.3 137.8 137.8 
Total common equity securities483.5 538.4 538.4 
Other long-term investments1,655.7 1,998.2 1,998.2 
Total investments$5,883.8 $6,388.7 $6,388.7 




























Schedules of the Registrant should be read in conjunction with the Consolidated Financial Statements and Notes.
FS-1FS - 1



SCHEDULE II

CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT

CONDENSED BALANCE SHEETS (1)

December 31,
December 31,December 31,
MillionsMillions20212020Millions20232022
Assets:Assets:  Assets: 
CashCash$.6 $.7 
Fixed maturity investments, at fair valueFixed maturity investments, at fair value 10.1 
Short-term investments, at amortized cost6.7 24.3 
Common equity securities, at fair value
Short-term investments, at fair value
Other long-term investments
Net receivable due from subsidiaries
Other assetsOther assets3.0 2.5 
Investments in consolidated subsidiaries3,661.8 3,726.0 
Investments in consolidated and unconsolidated subsidiaries
Total assetsTotal assets$3,672.1 $3,763.6 
Liabilities:Liabilities:
Payable to subsidiary$104.9 $(195.6)
Other liabilities (2)
10.1 39.7 
Other liabilities
Other liabilities
Other liabilities
Total liabilitiesTotal liabilities115.0 (155.9)
White Mountains’s common shareholders’ equity3,548.1 3,906.0 
Non-controlling interests9.0 13.5 
Equity:
Total White Mountains’s common shareholders’ equity
Total White Mountains’s common shareholders’ equity
Total White Mountains’s common shareholders’ equity
Total liabilities and equityTotal liabilities and equity$3,672.1 $3,763.6 
Total liabilities and equity
Total liabilities and equity
(1) These condensed unconsolidated financial statements reflect the results of operations, financial condition and cash flows for the Company. Investments in which White Mountains holds a controlling financial interest are accounted for using the equity method. Under the equity method, investments in subsidiaries are recorded on the condensed balance sheets at the amount of the Company’s ownership percentage of the subsidiary’s GAAP book value. The income from subsidiaries is reported on a net of tax basis as equity in earnings from consolidated and unconsolidated subsidiaries on the condensed statements of operations and comprehensive income (loss). Capital contributions to and distributions from consolidated subsidiaries are presented within investing activities on the condensed statements of cash flows.
(2) As of December 31, 2020, White Mountains’s other liabilities includes $18.7 related to the Sirius Group tax contingency, which was reversed during 2021. See Note 21 — “Held for Sale and Discontinued Operations”.

























Schedules of the Registrant should be read in conjunction with the Consolidated Financial Statements and Notes.
FS-2


SCHEDULE II (continued)

CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (1)

Year Ended December 31,
Millions202120202019
Revenues (loss) (including realized and unrealized gains and losses)$(.2)$(8.7)$65.0 
Expenses39.0 61.0 47.1 
Pre-tax income (loss)(39.2)(69.7)17.9 
Income tax benefit (expense) (.3)(.9)
Net income (loss)(39.2)(70.0)17.0 
Net gain (loss) from discontinued operations, net of tax (2)
18.7 (2.3).8 
Equity in earnings from consolidated and unconsolidated subsidiaries,
   net of tax
(257.4)782.0 398.5 
Net (income) loss attributable to non-controlling interests2.5 (1.0)(1.8)
Net income (loss) attributable to White Mountains’s
   common shareholders
(275.4)708.7 414.5 
Other comprehensive (loss) income items, net of tax2.1 6.8 (1.4)
Comprehensive income (loss) attributable to White Mountains’s
   common shareholders
$(273.3)$715.5 $413.1 
(1) These condensed unconsolidated financial statements reflect the results of operations, financial condition and cash flows for the Company. Investments in which White Mountains holds a controlling financial interest are accounted for using the equity method. Under the equity method, investments in subsidiaries are recorded on the condensed balance sheets at the amount of the Company’s ownership percentage of the subsidiary’s GAAP book value. The income Distributions from subsidiaries is reported on a net of tax basis as equity in earnings of subsidiaries on the condensed statements of operations and comprehensive income (loss). Capital contributions to and distributions fromconsolidated subsidiaries are presented within operating or investing activities on the condensed statements of cash flows.
(2) During 2021, 2020 and 2019, net gain (loss) from discontinued operations includes $18.7, $(2.3) and $0.8 arising from the tax contingencyflows based on the salenature of Sirius Group. See Note 21 — “Held for Sale and Discontinued Operations”.










the distribution. Certain amounts in the prior period financial statements have been reclassified to conform to the current presentation.



























Schedules of the Registrant should be read in conjunction with the Consolidated Financial Statements and Notes.
FS-3FS - 2


SCHEDULE II (continued)

CONDENSED STATEMENTS OF CASH FLOWSOPERATIONS AND COMPREHENSIVE INCOME (LOSS) (1)
Year Ended December 31,
Millions202120202019
Net income (loss) attributable to White Mountains’s common shareholders$(275.4)$708.7 $414.5 
Charges (credits) to reconcile net income to net cash from operations:
Net realized and unrealized investment (gains) losses on sales of investments.1 10.1 (61.0)
Undistributed earnings from subsidiaries257.4 (782.0)(398.5)
Net (gain) loss from sale of discontinued operations, net of tax (2)
(18.7)2.3 (.8)
Other non-cash reconciling items, primarily amortization of restricted share and option awards (3)
14.1 19.0 20.0 
Net change in other assets and liabilities (4)
(5.7)(2.6)3.0 
Net cash (used for) provided from operations(28.2)(44.5)(22.8)
Cash flows from investing activities:
Net change in short-term investments (5)(6)
17.7 (127.4)(37.6)
Purchases of investment securities (6.7)(14.8)
Sales and maturities of investment securities (6)
 189.7 207.9 
Purchases of investment securities from subsidiaries(26.4)— — 
Sales of investment securities to subsidiaries36.4 — — 
Issuance of debt (to) from subsidiaries (7)
94.0 (44.5)(83.5)
Repayment of debt to (from) subsidiaries(5)
 92.6 5.0 
Net distributions from (contributions to) subsidiaries (5)(8)(9)
17.0 29.1 (46.1)
Net cash provided from (used for) investing activities138.7 132.8 30.9 
Cash flows from financing activities:
Repurchases and retirement of common shares(100.1)(78.5)— 
Dividends paid on common shares(3.1)(3.2)(3.2)
Payments of restricted shares withholding taxes(7.4)(6.6)(4.9)
Net cash used for financing activities(110.6)(88.3)(8.1)
Net decrease in cash during the year(.1)— — 
Cash balance at beginning of year.7 .7 .7 
Cash balance at end of year$.6 $.7 $.7 

Year Ended December 31,
Millions202320222021
Revenues (loss) (including realized and unrealized gains and losses)$81.7 $(.4)$(.2)
Expenses60.5 67.1 39.0 
Pre-tax income (loss)21.2 (67.5)(39.2)
Income tax (expense) benefit(1.2)(.9)— 
Net income (loss)20.0 (68.4)(39.2)
Equity in earnings (losses) from consolidated and unconsolidated subsidiaries,
   net of tax
489.2 (42.0)(232.3)
Equity in earnings from discontinued operations, net of tax - NSM Group (2)
 16.4 (22.6)
Net gain (loss) from sale of discontinued operations, net of tax - NSM Group (2)
 886.8 — 
Net gain (loss) from sale of discontinued operations, net of tax - Sirius Group (2)
 — 18.7 
Net income (loss) attributable to White Mountains’s
   common shareholders
509.2 792.8 (275.4)
Equity in other comprehensive income (loss) from consolidated and
   unconsolidated subsidiaries, net of tax
1.9 (2.9)1.9 
Equity in other comprehensive income (loss) from discontinued operations,
   net of tax - NSM Group
 (5.2).2 
Net gain (loss) from foreign currency translation from sale of
   discontinued operations, net of tax - NSM Group
 2.9 — 
Comprehensive income (loss) attributable to White Mountains’s common
   shareholders
511.1 787.6 (273.3)
(1) These condensed unconsolidated financial statements reflect the results of operations, financial condition and cash flows for the Company. Investments in which White Mountains holds a controlling financial interest are accounted for using the equity method. Under the equity method, investments in consolidated subsidiaries are recorded on the condensed balance sheets at the amount of the Company’s ownership percentage of the subsidiary’s GAAP book value. The income from consolidated subsidiaries is reported on a net of tax basis as equity in earnings offrom consolidated and unconsolidated subsidiaries on the condensed statements of operations and comprehensive income (loss). Capital contributions to and distributions from consolidated subsidiaries are presented within investing activities on the condensed statements of cash flows. Distributions from consolidated subsidiaries are presented within operating or investing activities on the condensed statements of cash flows based on the nature of the distribution. Certain amounts in the prior period financial statements have been reclassified to conform to the current presentation.
(2) On August 1, 2022, White Mountains closed the NSM Transaction. See Note 2 — “Significant Transactions.” As a result of the NSM Transaction, the assets and liabilities of NSM Group have been presented in the balance sheet as held for sale for periods prior to the closing of the transaction, and the results of operations for NSM Group have been classified as discontinued operations in the statements of operations and comprehensive income through the closing of the transaction. During 2021, 2020 and 2019, net gain (loss) from sale of discontinued operations, net of tax includes $18.7 $(2.3) and $0.8 arising from the tax contingency on the sale of Sirius Group. See Note 2120 — “Held for Sale and Discontinued Operations.


























Schedules of the Registrant should be read in conjunction with the Consolidated Financial Statements and Notes.
FS - 3


SCHEDULE II (continued)
CONDENSED STATEMENTS OF CASH FLOWS (1)(2)
Year Ended December 31,
Millions202320222021
Net income (loss) attributable to White Mountains’s common shareholders$509.2 $792.8 $(275.4)
Charges (credits) to reconcile net income to net cash from operations:
Net realized and unrealized investment (gains) losses(78.9)5.6 .1 
Equity in (earnings) losses from consolidated and unconsolidated subsidiaries, net of tax(489.2)42.0 232.3 
Equity in (earnings) losses from discontinued operation, net of tax - NSM Group (2)
 (16.4)22.6 
Net (gain) loss from sale of discontinued operations, net of tax - NSM Group(2)
 (886.8)— 
Net (gain) loss from sale of discontinued operations, net of tax - Sirius Group (2)
 — (18.7)
Net other non-cash reconciling items (3)
12.7 7.0 16.6 
Distributions of accumulated earnings from consolidated subsidiaries (4)
17.3 7.0 — 
Net other operating activities (4)(5)
9.2 17.2 (5.7)
Net cash provided from (used for) operations(19.7)(31.6)(28.2)
Cash flows from investing activities:
Net change in short-term investments (4)(6)(7)(8)
(63.8)1,165.6 17.7 
Purchases of investment securities(125.0)(359.2)— 
Sales and maturities of investment securities335.4 15.7 — 
Purchases of investment securities from subsidiaries (14.0)(26.4)
Sales of investment securities to subsidiaries — 36.4 
Release of cash (pre-funding) for ILS funds managed by Elementum70.0 (70.0)— 
Net issuance of debt (to) from subsidiaries (8)
(132.5)(142.0)94.0 
Net repayment of debt (to) from subsidiaries (6)(8)(9)
31.4 (15.0)— 
Net distributions from (contributions to) subsidiaries (6)(7)(8)
(60.3)49.3 17.0 
Proceeds from the sale of Other Operating Businesses, net of cash sold of $0.0.0 $0.5 and $0.0 19.5 — 
Net cash provided from (used for) investing activities55.2 649.9 138.7 
Cash flows from financing activities:
Repurchases and retirement of common shares(32.7)(615.8)(107.5)
Cash dividends paid to common shareholders(2.6)(3.0)(3.1)
Net cash provided from (used for) financing activities(35.3)(618.8)(110.6)
Net change in cash during the year.2 (.5)(.1)
Cash balance at beginning of year.1 .6 .7 
Cash balance at end of year$.3 $.1 $.6 
(1)    These condensed unconsolidated financial statements reflect the results of operations, financial condition and cash flows for the Company. Investments in which White Mountains holds a controlling financial interest are accounted for using the equity method. Under the equity method, investments in subsidiaries are recorded on the condensed balance sheets at the amount of the Company’s ownership percentage of the subsidiary’s GAAP book value. The income from subsidiaries is reported on a net of tax basis as equity in earnings from consolidated and unconsolidated subsidiaries on the condensed statements of operations and comprehensive income (loss). Capital contributions to consolidated subsidiaries are presented within investing activities on the condensed statements of cash flows. Distributions from consolidated subsidiaries are presented within operating or investing activities on the condensed statements of cash flows based on the nature of the distribution. Certain amounts in the prior period financial statements have been reclassified to conform to the current presentation.
(2)    See Note 20 — “Held for Sale and Discontinued Operations”.
(3)    ForIncludes amortization of restricted share awards of $15.3, $14.0 and $14.7 for the years ended December 31, 2021, 20202023, 2022 and 2019, amortization of restricted share awards was $14.7, $16.6 and $10.5.2021.
(4)During 2022, Bridge Holdings, Ltd. (“Bridge”), a wholly-owned subsidiary of the Company, merged into the Company. The merger was treated as a liquidation for financial statement purposes. As part of the liquidation, Bridge transferred cash of $7.0 and non-cash balances to the Company including ending net equity of $3,540.6, intercompany note receivable of $76.4, investments in its subsidiaries of $2,003.6, fixed maturity investments of $28.6, common equity securities of $8.1, other long-term investments of $52.2, short-term investments of $1,358.7 and other assets of $6.0.
(5)    For 2023, 2022 and 2021, 2020 and 2019, net change in other assets and liabilitiesoperating activities also included a$8.4, $3.3, and $6.5 $(4.8), and $(6.6)of net changechanges in (receivables) payables to the Company’s subsidiaries. During 2023, the Company made a non-cash payment in fixed maturity investments of $10.0 for a payable due to its wholly-owned subsidiary, White Mountains Lafayette Holdings, Inc.
(5)(6)     During 2021, the Company’s wholly-owned subsidiary, Bridge Holdings (“Bridge”) repaid $200.0 of outstanding intercompany debt to the Company by transferring shares of its wholly-owned subsidiary, White Mountains Lincoln Holdings, Inc., (“WM Lincoln”), which had carrying value of $212.6. The $12.6 in excess of the intercompany debt was a non-cash distribution to the Company. Also, as part of the transaction, the Company received a distribution of $18.0 from Bridge, including $17.9 of short-term investments and $0.1 of cash. Subsequent to that transaction, the Company contributed the shares of WM Lincoln, which had a carrying value of $212.6, to its wholly-owned subsidiary White Mountains Adams, Inc. (“WM Adams”). The Company also contributed an additional $42.7 to WM Adams, including $37.1 of short-term investments and $5.6 of cash.
(6)    During 2020, the Company had non-cash purchases of short-term investments of $169.6.
(7)    During 2020, the Company had non-cash issuance of debt of $169.6 to Bridge. Proceeds of the debt, which were short-term investments, were transferred to Bridge.
(8)    During 2019,2022, the Company made cash contributions to its wholly-owned subsidiaries White Mountains Investments (Bermuda), Ltd. (“WMIB”) of $70.5$51.0 and $2.0WM Adams of $25.0. Also, during 2022, the Company made non-cash contributions of $100.0 in short term investments to BridgeWM Adams. During 2022, the Company received cash distributions of $116.3 from HG Global, $7.7 from Ark and $1.3 from its wholly-owned subsidiary, White Mountains Investment Bermuda,PSC Holdings, Ltd (“WMIB”PSC Holdings”)
(9). During 2021, the Company received a distribution of $19.7, including $19.1 of short-term investments and $0.6 of cash, from WMIB.
(8)    During 2020,2023, the Company had issuances of debt of $20.0 to WM Hinson (Bermuda) Ltd. (“WM Hinson”), a wholly-owned subsidiaries of the Company and $7.5 to HG Global. During 2023, the Company received repayments of debt of $42.4 in cash distributions of $6.8 and $22.3$107.6 in investments ($45.9 in fixed maturity investments and $61.7 short-term investments) from its wholly-owned subsidiary, PSC Holdings, Ltd.WM Hinson and the Company’s subsidiary,$9.5 from HG Global Ltd. During 2019,Global. Also, during 2023, the Company receivedmade repayments of debt of $20.5 in cash distributionsand $73.8 in investments ($36.9 million in fixed maturity investments and $36.9 in short-term investments) to WM Birkdale Ltd. (“WM Birkdale”), a wholly-owned subsidiaries of $24.4the Company. Also, in 2023, the Company had issuances of debt of $105.0 million in cash to White Mountains Investments (Luxembourg) S.a.r.l. under a new promissory note. Subsequently, the Company contributed the promissory note to WM Birkdale. During 2022, prior to the merger of Bridge into the Company, Bridge had an issuance of debt of $69.0 to the Company. Also, during 2022, the Company had issuances of debt of $205.0 to WM Hinson and $1.9 from WMIB and the Company’s subsidiary,$6.0 to HG Global Ltd.Global.

(9)





    During 2022, prior to the merger of Bridge into the Company, the Company had a repayment of debt to Bridge of $15.0.



Schedules of the Registrant should be read in conjunction with the Consolidated Financial Statements and Notes.
FS-4FS - 4


SCHEDULE III

WHITE MOUNTAINS INSURANCE GROUP, LTD.
SUPPLEMENTARY INSURANCE INFORMATION

Column
A
Column
A
Column
B
Column CColumn
D
Column EColumn
F
Column
G
Column
H
Column 
I
Column
J
Column
K
Millions







Segment
Millions







Segment
Deferred
Acquisition
Costs
Future
Policy
Benefits,
Losses,
Claims
and Loss
Expenses
Unearned
Premiums
Other Policy
Claims and
Benefits
Payable
Premiums
Earned
Net
Investment
Income
Benefits,
Claims,
Losses and
Settlement
Expenses
Amortization
of Deferred
Acquisition
Costs
Other Operating
Expenses
Premiums
Written
Years ended:Years ended: 
December 31, 2023
December 31, 2023
December 31, 2023
December 31, 2023
December 31, 2023
December 31, 2023  
Column
A
Column
B
Column CColumn
D
Column EColumn
F
Column
G
Column
H
Column 
I
Column
J
Column
K
HG Global/BAM
Millions







Segment
Deferred
Acquisition
Costs
Future
Policy
Benefits,
Losses,
Claims
and Loss
Expenses
Unearned
Premiums
Other Policy
Claims and
Benefits
Payable
Premiums
Earned
Net
Investment
Income
Benefits,
Claims,
Losses and
Settlement
Expenses
Amortization
of Deferred
Acquisition
Costs
Other Operating
Expenses
Premiums
Written
Years ended:          
HG Global/BAM
HG Global/BAM
Ark/WM Outrigger
Ark/WM Outrigger
Ark/WM Outrigger
December 31, 2022December 31, 2022  
HG Global/BAM
HG Global/BAM
HG Global/BAM
Ark/WM Outrigger
December 31, 2021December 31, 2021          
December 31, 2021
December 31, 2021  
HG Global/BAM
HG Global/BAM
HG Global/BAM
Ark/WM Outrigger
 HG Global/BAM$33.1 $ $266.3 $ $26.9 $17.5 $ $8.3 $.4 $55.8 
Ark$100.8 $894.7 $495.9 $ $637.3 $2.9 $314.8 $111.3 $64.6 $859.1 
December 31, 2020          
 HG Global/BAM27.8 — 237.5 — 22.8 19.5 — 7.0 .4 61.7 
December 31, 2019          
 HG Global/BAM22.1 — 198.4 — 16.3 21.6 — 5.7 .4 38.7 

































Schedules of the Registrant should be read in conjunction with the Consolidated Financial Statements and Notes.
FS-5FS - 5


SCHEDULE IV

WHITE MOUNTAINS INSURANCE GROUP, LTD.
REINSURANCE

Column AColumn BColumn CColumn DColumn EColumn F
$ in Millions

Premiums Earned
Gross AmountCeded to Other
Companies
Assumed from
Other Companies
Net AmountPercentage of
Amount Assumed
to Net
Year ended:     
December 31, 2021     
HG Global/BAM$23.2 $ $3.7 $26.9 13.8 %
Ark886.4 (249.1) 637.3  
December 31, 2020     
HG Global/BAM19.4 — 3.4 22.8 14.9 
December 31, 2019    
HG Global/BAM13.6 — 2.7 16.3 16.6 


Column AColumn BColumn CColumn DColumn EColumn F
$ in Millions

Premiums Earned
Gross AmountCeded to Other
Companies
Assumed from
Other Companies
Net AmountPercentage of
Amount Assumed
to Net
Year ended:     
December 31, 2023     
HG Global/BAM$28.7 $ $2.5 $31.2 8.0 %
Ark/WM Outrigger848.1 (364.0)925.6 1,409.7 65.7 
December 31, 2022     
HG Global/BAM28.6 — 4.7 33.3 14.1 
Ark/WM Outrigger655.5 (280.8)668.7 1,043.4 64.1 
December 31, 2021    
HG Global/BAM23.2 — 3.7 26.9 13.8 
Ark/WM Outrigger556.0 (249.1)330.4 637.3 51.8 


































Schedules of the Registrant should be read in conjunction with the Consolidated Financial Statements and Notes.
FS - 6

FS-6


SCHEDULE V

WHITE MOUNTAINS INSURANCE GROUP, LTD.
VALUATION AND QUALIFYING ACCOUNTS

Column AColumn AColumn BColumn CColumn DColumn EColumn AColumn BColumn CColumn DColumn E
Additions (subtractions)
Additions (subtractions)
Millions
Millions
MillionsMillionsBalance at beginning of
period
Charged to costs
and expenses
Charged to other
accounts
Deductions described (1)
Balance at end of
period
Balance at beginning of
period
Charged to costs
and expenses
Charged to other
accounts
Deductions described (1)
Balance at end of
period
Years ended:Years ended:     Years ended: 
December 31, 2021     
Reinsurance recoverable on paid losses:     
Allowance for reinsurance balances$.3 $.4 $ $ $.7 
December 31, 2023
December 31, 2023
December 31, 2023 
Reinsurance recoverables:Reinsurance recoverables: 
Allowance for uncollectible balances
December 31, 2022
December 31, 2022
December 31, 2022
Reinsurance recoverables:
Reinsurance recoverables:
Reinsurance recoverables:
Allowance for uncollectible balances
Allowance for uncollectible balances
Allowance for uncollectible balances
December 31, 2021
Reinsurance recoverables:
Reinsurance recoverables:
Reinsurance recoverables:
Allowance for uncollectible balances
(1)Represents net collections (charge-offs) of balances receivable and foreign currency translation.





































Schedules of the Registrant should be read in conjunction with the Consolidated Financial Statements and Notes.
FS-7FS - 7


SCHEDULE VI

WHITE MOUNTAINS INSURANCE GROUP, LTD.
SUPPLEMENTAL INFORMATION FOR PROPERTY AND CASUALTY INSURANCE UNDERWRITERS
(Millions)

Column AColumn BColumn CColumn DColumn EColumn FColumn GColumn HColumn IColumn JColumn K
Deferred acquisition
costs
Reserves
for Unpaid
Claims and
Claims Adjustment
Expenses
Discount, if any, deducted in
Column C
Unearned
Premiums
Earned
Premiums
Net investment
income
Claims and Claims
Adjustment Expenses
Incurred Related to
Amortization
of deferred
policy acquisition
costs
Paid
Claims and
Claims Adjustment
Expenses
Premiums
written
Affiliation 
with
registrant
Current
Year
Prior
Year
Ark:
2021100.8 894.7  495.9 637.3 2.9 336.3 (21.5)111.3 105.5 859.1 


Column AColumn BColumn CColumn DColumn EColumn FColumn GColumn HColumn IColumn JColumn K
Deferred acquisition
costs
Reserves
for Unpaid
Claims and
Claims Adjustment
Expenses
Discount, if any, deducted in
Column C
Unearned
Premiums
Earned
Premiums
Net investment
income
Claims and Claims
Adjustment Expenses
Incurred Related to
Amortization
of deferred
policy acquisition
costs
Paid
Claims and
Claims Adjustment
Expenses
Premiums
written
Affiliation 
with
registrant
Current
Year
Prior
Year
Ark/WM Outrigger:
2023$145.3 $1,605.1  $743.6 $1,409.7 $61.4 $706.9 $19.9 $273.1 $407.9 $1,520.9 
2022127.2 1,296.5 — 623.2 1,043.4 16.3 588.1 (51.7)238.3 257.5 1,195.2 
2021100.8 894.7 — 495.9 637.3 2.9 336.3 (21.5)111.3 105.5 859.1 











































Schedules of the Registrant should be read in conjunction with the Consolidated Financial Statements and Notes.
FS-8FS - 8