WHITE MOUNTAINS REPORTS FOURTH QUARTER RESULTS

Rhea-AI Summary

White Mountains (NYSE: WTM) reported book value per share $2,188 as of Dec 31, 2025, up 18% in Q4 and 25% for 2025, including dividends. The Bamboo sale materially contributed, adding roughly $320 to BVPS in 2025. Comprehensive income was $837M in Q4 and $1,109M for the year. The company repurchased about $190M of shares in Q4 and reports roughly $1.0B of undeployed capital (including a WM Outrigger distribution received in January). Other notable items include Ark gross written premiums of $2.6B (+16% YoY), Kudu 13% ROE for 2025, and a $73M deferred tax expense reversal in Q4 related to the Bermuda economic transition adjustment.

Positive

• Book value per share $2,188 (+25% for 2025)
• Bamboo sale added roughly $320 to BVPS in 2025
• Repurchased approximately $190 million of shares in Q4
• Ark gross written premiums $2.6 billion (+16% year)
• Kudu return on equity 13% for 2025

Negative

• Net deferred tax expense of $73 million recorded in Q4 2025
• Luxembourg Pillar II enactment prevents using economic transition adjustment
• HG Global fair value decline of BAM surplus notes of $38 million
• Ark included 10 points of catastrophe losses in Q4 2025

Key Figures

Book value per share: $2,188 Comprehensive income Q4 2025: $837 million Comprehensive income 2025: $1,109 million +5 more

8 metrics

Book value per share $2,188 As of December 31, 2025; up 18% in Q4 and 25% for 2025 including dividends

Comprehensive income Q4 2025 $837 million Comprehensive income attributable to common shareholders, Q4 2025

Comprehensive income 2025 $1,109 million Comprehensive income attributable to common shareholders, full year 2025

Bamboo net gain $816 million Net gain recognized from Bamboo transaction in 2025

Ark combined ratio 83% Ark full-year 2025 combined ratio

Ark gross written premiums $2.6 billion Ark gross written premiums in 2025, up 16%

Share repurchases $190 million Shares repurchased in Q4 2025, inclusive of self-tender offer

Undeployed capital $1.0 billion Undeployed capital including WM Outrigger Re distribution received in January

Market Reality Check

Price: $2185.00 Vol: Volume 20,961 is above th...

normal vol

$2185.00 Last Close

Volume Volume 20,961 is above the 20-day average of 15,906 (relative volume 1.32). normal

Technical Price 2,126.57 is trading above the 200-day MA at 1,872.05 and near the 52-week high of 2,143.25.

Peers on Argus

WTM is up 1.94% with several property & casualty peers also positive (e.g., KMPR...

1 Up

WTM is up 1.94% with several property & casualty peers also positive (e.g., KMPR up 11.35%, MCY up 2.15%, HGTY up 1.45%), but momentum scanner flags this as stock-specific rather than a broad sector move.

Previous Earnings Reports

5 past events · Latest: Nov 06 (Positive)

Same Type Pattern 5 events

Date	Event	Sentiment	Move	Catalyst
Nov 06	Q3 2025 earnings	Positive	-0.3%	BVPS up to $1,851 and announced Bamboo sale boosting pro forma BVPS.
Aug 07	Q2 2025 earnings	Positive	-1.8%	Strong Q2 with BVPS up 3% and $124M comprehensive income.
May 07	Q1 2025 earnings	Positive	+0.4%	Higher BVPS and broad segment growth, despite MediaAlpha drag.
Feb 07	Q4 2024 earnings	Negative	+0.3%	Q4 2024 BVPS declined 3% with comprehensive loss of $131M.
Nov 06	Q3 2024 earnings	Positive	+6.0%	Strong Q3 2024 with BVPS gains and $180M comprehensive income.

Pattern Detected

Earnings headlines are generally positive, but price reactions have been mixed, with slightly more divergences than alignments.

Recent Company History

Across recent earnings events, White Mountains has consistently highlighted growth in book value per share, strong combined ratios at Ark, and expanding gross written premiums. Prior quarters, such as Q2 and Q3 2025, showed positive comprehensive income and capital deployment into acquisitions like Distinguished and BroadStreet, while maintaining substantial undeployed capital. However, share price reactions around these earnings have often been muted or contrary to the fundamental tone. Today’s results continue the theme of BVPS growth and segment strength, now including realized value from the Bamboo sale.

Historical Comparison

earnings

+0.9 %

Average Historical Move

Historical Analysis

In the past five earnings releases, WTM’s average 1-day move was about 0.93%. Today’s 1.94% move sits moderately above that typical earnings reaction range.

Typical Pattern

Earnings releases over 2024–2025 show steady growth in book value per share, improving combined ratios at Ark, and rising gross written premiums, alongside periodic capital deployment into acquisitions and tender offers. The current report extends this trajectory with strong 2025 BVPS growth and crystallization of value from the Bamboo sale while maintaining significant undeployed capital.

Market Pulse Summary

This announcement highlights a strong year, with book value per share reaching $2,188, up 25% includ...

Analysis

This announcement highlights a strong year, with book value per share reaching $2,188, up 25% including dividends, and an $816 million gain from the Bamboo sale. Ark delivered an 83% combined ratio and $2.6 billion of gross written premiums, while Kudu and HG Global contributed higher earnings and investment gains. Investors may focus on how management deploys roughly $1.0 billion of undeployed capital, future catastrophe experience, and the repeatability of 2025’s investment and transaction-driven gains.

Key Terms

combined ratio, gross written premiums, adjusted EBITDA, surplus notes, +3 more

7 terms

combined ratio financial

"For the year, Ark produced an 83% combined ratio and $2.6 billion of gross..."

The combined ratio is a way insurance companies measure how well they are doing by adding up all their costs and claims and comparing them to the money they earn from premiums. If the ratio is below 100%, it means the company is making a profit; if it's above 100%, they are losing money. It helps see if an insurance company is financially healthy or not.

gross written premiums financial

"Ark produced an 83% combined ratio and $2.6 billion of gross written premiums..."

Gross written premiums are the total amount of money an insurance company charges for all the policies it sells during a specific period, before subtracting any costs or claims. It's like the total sales a store makes from all its products before deducting expenses. This figure shows how much business the insurer is taking on and helps gauge its size and growth.

adjusted EBITDA financial

"Kudu reported total revenues of $45 million... and adjusted EBITDA of $18 million..."

Adjusted EBITDA is a way companies measure how much money they make from their core operations, like running a business, by removing certain costs or income that aren’t part of regular business activities. It helps investors see how well a company is doing without distractions from unusual expenses or gains, making it easier to compare companies or track performance over time.

surplus notes financial

"HG Global's results... included a $38 million decline in the fair value of the BAM surplus notes..."

A surplus note is a special kind of loan an insurance company issues that counts toward its financial cushion; think of it as a secondary safety pad that helps the insurer meet regulators’ capital requirements. It matters to investors because it usually pays higher interest than ordinary bonds but is riskier — interest and principal repayments can be delayed or need regulator approval, so holders sit behind policyholders in claims and face greater uncertainty.

return on equity financial

"Kudu produced a 13% return on equity and grew the fair value..."

Return on equity shows how effectively a company uses its shareholders' money to generate profit. It is calculated by dividing the company's net profit by its shareholders' equity, indicating how much profit is earned for each dollar invested by owners. Higher return on equity suggests the company is good at turning investments into earnings, which can be an important factor for investors assessing its profitability and efficiency.

deferred tax asset financial

"recognized a net deferred tax expense of $73 million... from the reversal of the deferred tax asset..."

A deferred tax asset is an accounting recognition that a company expects to pay less tax in the future because of past losses or timing differences between accounting and tax rules; think of it as an IOU from the tax system that can reduce future tax bills. It matters to investors because it can boost future cash flow and reported profits if the company generates enough taxable income to use it, but its value depends on realistic prospects for future earnings.

basis points financial

"HG Global's total gross pricing was 204 and 194 basis points in the fourth quarter..."

Basis points are a way to measure small changes in interest rates or percentages, where one basis point equals 0.01%. For example, if a loan's interest rate increases by 50 basis points, it's gone up by 0.50%. They help people understand tiny differences in rates that can add up over time, making financial comparisons clearer.

AI-generated analysis. Not financial advice.

HAMILTON, Bermuda, Feb. 6, 2026 /PRNewswire/ -- White Mountains Insurance Group, Ltd. (NYSE: WTM) reported book value per share of $2,188 as of December 31, 2025, an increase of 18% for the fourth quarter of 2025 and 25% for the year ended December 31, 2025, including dividends.

Liam Caffrey, CEO, commented, "We had an excellent year, with BVPS growth of 18% in the quarter and 25% for the year.  The largest contributor in both periods was the net gain from our sale of Bamboo, which added roughly $320 to BVPS in 2025.  We also benefitted from solid results at our operating companies and good investment returns.  For the year, Ark produced an 83% combined ratio and $2.6 billion of gross written premiums, up 16%.  HG Global generated $61 million of gross written premiums, driven by a record year at BAM.  Kudu produced a 13% return on equity and grew the fair value of its portfolio of participation contracts by 8% on a same store basis.  Distinguished is off to a solid start under our ownership, generating managed premiums of $145 million in the quarter across both its scaled and growth programs.  MediaAlpha's share price was up 14% in the quarter and 15% for the year.  Excluding MediaAlpha, our investment portfolio returned 2.0% in the quarter and 8.9% for the year.  During the quarter, we repurchased roughly $190 million of shares, inclusive of our self-tender offer.  Including the distribution from WM Outrigger Re received in January, undeployed capital stands at roughly $1.0 billion."

Comprehensive income (loss) attributable to common shareholders was $837 million and $1,109 million in the fourth quarter and year ended December 31, 2025 compared to $(131) million and $230 million in the fourth quarter and year ended December 31, 2024.  For the year ended December 31, 2025, White Mountains recognized a net gain of $816 million from the Bamboo transaction, which includes the impact of parent company compensation costs recorded in general and administrative expenses.  White Mountains also recognized a net deferred tax expense of $73 million in the fourth quarter of 2025 from the reversal of the deferred tax asset related to the Bermuda economic transition adjustment, of which $51 million was recorded at Ark and $22 million was recorded at HG Global.  Due to the enactment of Pillar II legislation by Luxembourg in December 2025, White Mountains no longer expects to utilize the benefit of the economic transition adjustment.  Results in the fourth quarter and year ended December 31, 2025 also included $28 million and $30 million of unrealized investment gains from White Mountains's investment in MediaAlpha compared to $(122) million and $38 million of net realized and unrealized investment gains (losses) in the fourth quarter and year ended December 31, 2024.

Ark/WM Outrigger

The Ark/WM Outrigger segment's combined ratio was 77% and 81% in the fourth quarter and year ended December 31, 2025 compared to 77% and 82% in the fourth quarter and year ended December 31, 2024.  Ark/WM Outrigger reported gross written premiums of $268 million and $2,557 million, net written premiums of $218 million and $1,812 million and net earned premiums of $433 million and $1,697 million in the fourth quarter and year ended December 31, 2025 compared to gross written premiums of $264 million and $2,207 million, net written premiums of $239 million and $1,679 million and net earned premiums of $415 million and $1,588 million in the fourth quarter and year ended December 31, 2024. 

Ark's combined ratio was 79% and 83% in the fourth quarter and year ended December 31, 2025 compared to 77% and 83% in the fourth quarter and year ended December 31, 2024.  Ark's combined ratio in the fourth quarter of 2025 included 10 points of catastrophe losses, driven primarily by Hurricane Melissa.  Ark's combined ratio in the year ended December 31, 2025 included eight points of catastrophe losses, driven primarily by Hurricane Melissa and losses related to the January 2025 California wildfires.  This compares to 27 points of catastrophe losses in the fourth quarter of 2024, driven primarily by Hurricanes Milton and Helene, and 13 points of catastrophe losses in the year ended December 31, 2024, driven primarily by Hurricanes Milton, Helene, Debby and Beryl.  Ark's combined ratio included 10 points and seven points of net favorable prior year development in the fourth quarter and year ended December 31, 2025, driven primarily by property and specialty lines of business.  This included 11 points and six points of unfavorable development in the fourth quarter and year ended December 31, 2025 related to aviation losses from the conflict in Ukraine and Russia.  This compares to seven points and four points of net favorable prior year development in the fourth quarter and year ended December 31, 2024, driven primarily by property and specialty lines of business.

Ark reported gross written premiums of $268 million and $2,557 million, net written premiums of $218 million and $1,727 million and net earned premiums of $411 million and $1,613 million in the fourth quarter and year ended December 31, 2025 compared to gross written premiums of $264 million and $2,207 million, net written premiums of $234 million and $1,593 million and net earned premiums of $389 million and $1,500 million in the fourth quarter and year ended December 31, 2024.

Ark reported pre-tax income of $25 million and $265 million in the fourth quarter and year ended December 31, 2025 compared to $51 million and $253 million in the fourth quarter and year ended December 31, 2024.  Ark's results included net realized and unrealized investment gains of $26 million and $125 million in the fourth quarter and year ended December 31, 2025 compared to $(34) million and $50 million in the fourth quarter and year ended December 31, 2024.  Ark's results also included $99 million and $173 million of expense related to the increase in fair value of White Mountains's contingent consideration liability in the fourth quarter and year ended December 31, 2025 compared to $14 million and $61 million in the fourth quarter and year ended December 31, 2024.  The increase in the contingent consideration liability was driven primarily by strong growth in Ark's tangible book value in the year.

Ark's results in the fourth quarter and year ended December 31, 2025 also included the reversal of the $51 million deferred tax asset associated with the Bermuda economic transition adjustment.

Ian Beaton, CEO of Ark, said, "Ark had a good quarter and year, producing combined ratios of 79% and 83%, respectively.  Full year gross written premiums reached $2.6 billion, up 16% year-over-year, aided by new underwriting teams and products.  In November, A.M. Best affirmed Ark's 'A/stable' financial strength rating and upgraded its issuer credit rating to "a+/stable".  Although the overall rate environment is softening, we continue to see opportunities to generate strong returns in 2026." 

WM Outrigger Re's combined ratio was 41% and 57% in the fourth quarter and year ended December 31, 2025 compared to 86% and 60% in the fourth quarter and year ended December 31, 2024.  Catastrophe losses in the year ended December 31, 2025 included $19 million of losses related to the California wildfires (net of reinstatement premiums).  WM Outrigger Re reported gross written premiums of $1 million and $84 million and net earned premiums of $22 million and $85 million in the fourth quarter and year ended December 31, 2025 compared to gross written premiums of $5 million and $87 million and net earned premiums of $25 million and $88 million in the fourth quarter and year ended December 31, 2024.

WM Outrigger Re reported pre-tax income of $15 million in the fourth quarter of 2025, all of which was attributable to the 2025 underwriting year.  WM Outrigger Re reported pre-tax income of $6 million in the fourth quarter of 2024, of which $2 million was attributable to the 2024 underwriting year and $4 million was attributable to the 2023 underwriting year.  WM Outrigger Re reported pre-tax income (loss) of $45 million in the year ended December 31, 2025, of which $55 million was attributable to the 2025 underwriting year and $(10) million was attributable to the 2024 underwriting year.  WM Outrigger Re reported pre-tax income of $46 million in the year ended December 31, 2024, of which pre-tax income of $38 million was attributable to the 2024 underwriting year and $8 million was attributable to the 2023 underwriting year   During the fourth quarter of 2025, Ark renewed Outrigger Re Ltd. for the 2026 underwriting year with $70 million of capital. The capital was provided entirely by third-party investors excluding White Mountains.

Through December 31, 2025, WM Outrigger Re has generated pre-tax income of $55 million from the 2025 underwriting year, $29 million from the 2024 underwriting year and $76 million from the 2023 underwriting year.

HG Global

HG Global reported gross written premiums of $20 million and $61 million and earned premiums of $8 million and $31 million in the fourth quarter and year ended December 31, 2025 compared to gross written premiums of $18 million and $52 million and earned premiums of $7 million and $29 million in the fourth quarter and year ended December 31, 2024.  HG Global's total par value of policies assumed was $962 million and $3,170 million in the fourth quarter and year ended December 31, 2025 compared to $940 million and $2,952 million in the fourth quarter and year ended December 31, 2024.  HG Global's total gross pricing was 204 and 194 basis points in the fourth quarter and year ended December 31, 2025 compared to 190 and 177 basis points in the fourth quarter and year ended December 31, 2024.

HG Global reported pre-tax income (loss) of $(19) million and $45 million in the fourth quarter and year ended December 31, 2025 compared to $(20) million and $(66) million in the fourth quarter and year ended December 31, 2024.  HG Global's results included net realized and unrealized investment gains (losses) of $3 million and $23 million in the fourth quarter and year ended December 31, 2025 compared to $(20) million and $(6) million in the fourth quarter and year ended December 31, 2024, driven by movements in interest rates.

HG Global's results in the fourth quarter and year ended December 31, 2025 included a $38 million decline in the fair value of the BAM surplus notes, which was driven by changes in key inputs used in the discounted cash flow analysis.  HG Global's results in the fourth quarter and year ended December 31, 2024 included an increase (decrease) of $(15) million and $1 million in the fair value of the BAM surplus notes, which was driven by the movement in market interest rates.  In addition, HG Global's results in the year ended December 31, 2024 included the $115 million unrealized loss on deconsolidation of BAM.

The fair value of the BAM surplus notes was $339 million as of December 31, 2025 compared to $396 million as of September 30, 2025.  The decline was driven by the $38 million decrease in fair value and a $27 million cash payment of principal and interest, partially offset by approximately $7 million of accrued interest.

HG Global's results in the fourth quarter and year ended December 31, 2025 also included the reversal of the $22 million deferred tax asset associated with the Bermuda economic transition adjustment.

Kevin Pearson, President of HG Global, said, "HG Global recorded a strong quarter to close out the year, with gross written premiums increasing 10% during the quarter.  For the year, par assumed grew 7% to $3,170 million, while gross written premium assumed grew 17% to $61 million, both record levels driven by strong activity in the primary and secondary markets.  Municipal market issuance is expected to remain strong in 2026."

We encourage you to read BAM's fourth quarter statutory financial statements and operating supplement, which will be available on BAM's website at https://bambonds.com/about-bam/credit-rating-and-financial-information/. 

Kudu

Kudu reported total revenues of $45 million, pre-tax income of $32 million and adjusted EBITDA of $18 million in the fourth quarter of 2025 compared to total revenues of $(9) million, pre-tax loss of $(20) million and adjusted EBITDA of $14 million in the fourth quarter of 2024.  Total revenues, pre-tax income (loss) and adjusted EBITDA included $22 million of net investment income in the fourth quarter of 2025 compared to $17 million in the fourth quarter of 2024.  Total revenues and pre-tax income (loss) also included $23 million of net realized and unrealized investment gains (losses) in the fourth quarter of 2025 compared to $(26) million in the fourth quarter of 2024.  Return on equity was 13% for the year ended December 31, 2025, up from 9% for the trailing 12 months ended September 30, 2025 due to higher net realized and unrealized investment gains.

Kudu reported total revenues of $183 million, pre-tax income of $140 million and adjusted EBITDA of $65 million in the year ended December 31, 2025 compared to total revenues of $119 million, pre-tax income of $81 million and adjusted EBITDA of $55 million in the year ended December 31, 2024.  Total revenues, pre-tax income and adjusted EBITDA included $79 million of net investment income in the year ended December 31, 2025 compared to $67 million in the year ended December 31, 2024.  Total revenues and pre-tax income also included $104 million of net realized and unrealized investment gains in the year ended December 31, 2025 compared to $51 million in the year ended December 31, 2024.  The increase in net realized and unrealized investment gains was driven primarily by growth in assets under management across several participation contracts.

Rob Jakacki, CEO of Kudu, said, "Kudu had a good fourth quarter.  Our investment in Apera was monetized at an attractive valuation, and we deployed capital into one new participation contract.  Our portfolio grew to $1.3 billion and produced annualized adjusted EBITDA of $70 million.  As we look ahead to 2026, we remain focused on pursuing high–quality opportunities and positioning the portfolio for sustained, disciplined growth in the years to come."

Bamboo

On December 5, 2025, White Mountains completed the sale of Bamboo to CVC Capital Partners for net cash proceeds at closing of $848 million.  White Mountains retained a 15% fully-diluted/fully-converted equity interest valued at $250 million as of December 31, 2025, which is reported in other long-term investments within Other Operations.

Bamboo reported commission and fee revenues of $44 million and pre-tax income of $3 million in the period from October 1, 2025 through December 5, 2025, the date of sale, while Bamboo reported commission and fee revenues of $37 million and pre-tax income of $10 million in the fourth quarter of 2024.  Bamboo reported MGA pre-tax income of $1 million and MGA adjusted EBITDA of $18 million in the period from October 1, 2025 through December 5, 2025, while Bamboo reported MGA pre-tax income of $11 million and MGA adjusted EBITDA of $16 million in the fourth quarter of 2024.  Managed premiums, which represent the total premiums placed by Bamboo, were $147 million in the period from October 1, 2025 through December 5, 2025 and $127 million in the fourth quarter of 2024.  The increase in managed premiums was driven by growth in the renewal book as well as new business volume.

Bamboo reported commission and fee revenues of $211 million and pre-tax income of $40 million in the period from January 1, 2025 through December 5, 2025, while Bamboo reported commission and fee revenues of $135 million and pre-tax income of $33 million in the year ended December 31, 2024.  Bamboo reported MGA pre-tax income of $41 million and MGA adjusted EBITDA of $91 million in the period from January 1, 2025 through December 5, 2025, while Bamboo reported MGA pre-tax income of $32 million and MGA adjusted EBITDA of $53 million in the year ended December 31, 2024.  Managed premiums were $705 million in the period from January 1, 2025 through December 5, 2025 and $484 million in the year ended December 31, 2024.  The increase in managed premiums was driven by growth in the renewal book as well as new business volume.

John Chu, CEO of Bamboo, said, "Bamboo delivered a strong quarter, achieving new highs for premiums and profitability.  For the full year, managed premiums were $766 million, up 58%, and MGA adjusted EBITDA was $106 million, up 2x year-over-year.  We are proud of the value we delivered to owners through our sale, and we look forward to our continued partnership with White Mountains alongside CVC as we embark on the next phase of Bamboo's growth journey."

Distinguished

For the fourth quarter of 2025 and the period from September 2, 2025, the date of acquisition, to December 31, 2025, Distinguished reported managed premiums of $145 million and $188 million, commission and fee revenues of $43 million and $57 million, pre-tax loss of $14 million and $17 million, and ScaleCo adjusted EBITDA of $9 million in both periods. 

Jason Rotman, President of Distinguished, said "Distinguished had a productive fourth quarter. Our market-leading Umbrella program is well-positioned to support clients in a challenging market, our newer programs are performing well, and we have launched or are set to launch four additional growth programs backed by strong carrier partners."

MediaAlpha 

As of December 31, 2025, White Mountains owned 17.9 million shares of MediaAlpha, representing a 27% basic ownership interest based on the number of shares outstanding in MediaAlpha's Report on Form 10-Q dated October 29, 2025.  As of December 31, 2025, MediaAlpha's share price was $12.95 per share, which increased from $11.38 per share as of September 30, 2025.  The carrying value of White Mountains's investment in MediaAlpha was $231 million as of December 31, 2025 compared to $203 million as of September 30, 2025.  At our current level of ownership, each $1.00 per share increase or decrease in the share price of MediaAlpha will result in an approximate $7.00 per share increase or decrease in White Mountains's book value per share.

We encourage you to read MediaAlpha's fourth quarter earnings release and related shareholder letter, which will be available on MediaAlpha's investor relations website at https://investors.mediaalpha.com. 

Other Operations

White Mountains's Other Operations reported pre-tax income (loss) of $858 million and $810 million in the fourth quarter and year ended December 31, 2025 compared to $(148) million and $9 million in the fourth quarter and year ended December 31, 2024.  Results in the fourth quarter and year ended December 31, 2025 were driven primarily by the sale of Bamboo.  For the year ended December 31, 2025, White Mountains recognized a net gain of $816 million from the Bamboo transaction, which includes the impact of parent company compensation costs recorded in general and administrative expenses.  Unrealized investment gains from White Mountains's investment in MediaAlpha were $28 million and $30 million in the fourth quarter and year ended December 31, 2025 compared to net realized and unrealized investment gains of $(122) million and $38 million in the fourth quarter and year ended December 31, 2024.  Excluding MediaAlpha, net realized and unrealized investment gains (losses) were $31 million and $80 million in the fourth quarter and year ended December 31, 2025 compared to $(3) million and $57 million in the fourth quarter and year ended December 31, 2024.  Net investment income was $8 million and $32 million in the fourth quarter and year ended December 31, 2025 compared to $8 million and $36 million in the fourth quarter and year ended December 31, 2024. 

White Mountains's Other Operations reported other revenues of $61 million and $201 million in the fourth quarter and year ended December 31, 2025 compared to $13 million and $57 million in the fourth quarter and year ended December 31, 2024.  White Mountains's Other Operations reported cost of sales of $47 million and $152 million in the fourth quarter and year ended December 31, 2025 compared to $7 million and $30 million in the fourth quarter and year ended December 31, 2024.  The increases in other revenues and cost of sales were driven primarily by the consolidation of Enterprise Solutions by WTM Partners in the second quarter of 2025. 

White Mountains's Other Operations reported general and administrative expenses of $75 million and $237 million in the fourth quarter and year ended December 31, 2025 compared to $43 million and $170 million in the fourth quarter and year ended December 31, 2024.  The increases in general and administrative expenses were driven primarily by higher incentive compensation, largely in connection with the Bamboo sale, and the consolidation of Enterprise Solutions.  For the year ended December 31, 2025, the increase in general and administrative expenses also included higher transaction costs.

In the fourth quarter and year ended December 31, 2025, White Mountains's Other Operations reported pre-tax income (loss) of $1 million and $(5) million related to the Bamboo CRV.  The results of the Bamboo CRV for the year ended December 31, 2025 included $12 million of losses related to the January 2025 California wildfires.  In the fourth quarter and year ended December 31, 2024, White Mountains's Other Operations reported pre-tax income of $4 million and $9 million related to the Bamboo CRV. 

Share Repurchases

In the fourth quarter of 2025, White Mountains repurchased and retired 95,484 of its common shares for $193 million at an average share price of $2,017.34, or 92% of White Mountains's December 31, 2025 book value per share.  This included 64,064 shares repurchased under the self-tender offer in December.  In the year ended December 31, 2025, White Mountains repurchased and retired 100,581 of its common shares for $203 million at an average share price of $2,013.67, or 92% of White Mountains's December 31, 2025 book value per share.

Investments

The total consolidated portfolio return was 2.3% in the fourth quarter of 2025.  Excluding MediaAlpha, the total consolidated portfolio return was 2.0% in the fourth quarter of 2025.  The total consolidated portfolio return was -2.3% in the fourth quarter of 2024.  Excluding MediaAlpha, the total consolidated portfolio return was -0.4% in the fourth quarter of 2024.

The total consolidated portfolio return was 9.1% in the year ended December 31, 2025.  Excluding MediaAlpha, the total consolidated portfolio return was 8.9% in the year ended December 31, 2025.  The total consolidated portfolio return was 6.9% in the year ended December 31, 2024.  Excluding MediaAlpha, the total consolidated portfolio return was 6.5% in the year ended December 31, 2024.

Mark Plourde, President of White Mountains Advisors, said, "Excluding MediaAlpha, the total portfolio was up 2.0% in the quarter and 8.9% for the year.  Absolute returns were solid in both periods but mixed versus benchmarks.  Our short duration fixed income portfolio returned 1.1% in the quarter and 5.9% for the year, behind the Bloomberg Intermediate Aggregate Index returns of 1.4% and 7.5%.  Excluding MediaAlpha, the equity portfolio returned 3.2% in the quarter and 13.0% for the year, compared to the S&P 500 Index returns of 2.7% and 17.9%.  Equity results in both periods were driven primarily by our other long-term investments and the sale of our parent company common stock portfolio in the first half of 2025 to fund anticipated capital deployments."

Additional Information

White Mountains is a Bermuda-domiciled financial services holding company traded on the New York Stock Exchange under the symbol WTM and the Bermuda Stock Exchange under the symbol WTM.BH.  Additional financial information and other items of interest are available at the Company's website located at www.whitemountains.com.  White Mountains expects to file its Form 10-K on or before February 27, 2026 with the Securities and Exchange Commission and urges shareholders to refer to that document for more complete information concerning its financial results.

CONTACT: Rob Seelig
(603) 640-2212

WHITE MOUNTAINS INSURANCE GROUP, LTD. CONDENSED CONSOLIDATED BALANCE SHEETS (millions) (Unaudited)
		December 31, 2025		September 30, 2025		December 31, 2024
Assets
P&C Insurance and Reinsurance (Ark/WM Outrigger)
Fixed maturity investments		$                   1,917.9		$                   1,834.6		$                   1,565.1
Common equity securities		452.3		437.6		425.4
Short-term investments		866.6		745.4		601.4
Other long-term investments		689.7		676.5		547.8
Total investments		3,926.5		3,694.1		3,139.7
Cash (restricted $1.1, $8.0, $14.1)		104.8		289.9		141.2
Reinsurance recoverables		836.1		924.8		589.0
Insurance premiums receivable		848.4		1,149.7		768.6
Deferred acquisition costs		211.1		281.2		165.2
Goodwill and other intangible assets		292.5		292.5		292.5
Other assets		134.7		164.6		202.8
Total P&C Insurance and Reinsurance assets		6,354.1		6,796.8		5,299.0
Financial Guarantee (HG Global)
Fixed maturity investments		693.4		686.5		612.1
Short-term investments		90.8		56.2		55.5
Total investments		784.2		742.7		667.6
Cash		.1		.2		11.5
BAM surplus notes, at fair value		339.0		396.2		381.7
Insurance premiums receivable		11.4		7.7		4.4
Deferred acquisition costs		96.9		93.2		86.6
Other assets		5.2		26.1		27.6
Total Financial Guarantee assets		1,236.8		1,266.1		1,179.4
Asset Management (Kudu)
Short-term investments		21.9		24.6		27.9
Other long-term investments		1,291.4		1,214.4		1,014.0
Total investments		1,313.3		1,239.0		1,041.9
Cash		34.5		4.8		.6
Accrued investment income		25.3		24.2		18.0
Goodwill and other intangible assets		7.7		7.7		8.0
Other assets		21.5		23.1		39.9
Total Asset Management assets		1,402.3		1,298.8		1,108.4
Specialty Insurance Distribution (Distinguished)
Short-term investments		94.0		62.6		—
Total investments		94.0		62.6		—
Cash (restricted $0.1, $0.4, $0.0)		2.7		1.5		—
Premiums, commissions and fees receivable		45.7		42.2		—
Goodwill and other intangible assets		577.7		595.4		—
Other assets		15.3		12.0		—
Total Specialty Insurance Distribution assets		735.4		713.7		—
Other Operations
Fixed maturity investments		159.2		159.6		293.7
Common equity securities		30.7		—		224.6
Investment in MediaAlpha		231.2		203.2		201.6
Short-term investments		807.4		199.1		260.1
Other long-term investments		977.4		698.3		588.4
Total investments		2,205.9		1,260.2		1,568.4
Cash		42.8		41.0		37.6
Goodwill and other intangible assets		142.3		154.3		64.8
Other assets		181.9		146.5		75.8
Assets held for sale - Bamboo Group		—		662.0		585.7
Assets held for sale - Other		5.0		6.2		6.5
Total Other Operations assets		2,577.9		2,270.2		2,338.8
Total assets		$                  12,306.5		$                  12,345.6		$                   9,925.6

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. CONDENSED CONSOLIDATED BALANCE SHEETS (CONTINUED) (millions) (Unaudited)
		December 31, 2025		September 30, 2025		December 31, 2024
Liabilities
P&C Insurance and Reinsurance (Ark/WM Outrigger)
Loss and loss adjustment expense reserves		$                   2,481.0		$                   2,477.9		$                   2,127.5
Unearned insurance premiums		1,026.1		1,427.6		853.3
Debt		159.7		159.7		154.5
Reinsurance payable		286.2		404.7		149.5
Contingent consideration		328.3		229.5		155.3
Other liabilities		247.2		249.0		224.7
Total P&C Insurance and Reinsurance liabilities		4,528.5		4,948.4		3,664.8
Financial Guarantee (HG Global)
Unearned insurance premiums		327.9		316.3		297.3
Debt		147.8		147.7		147.4
Other liabilities		23.8		24.5		19.4
Total Financial Guarantee liabilities		499.5		488.5		464.1
Asset Management (Kudu)
Debt		350.4		274.3		238.6
Other liabilities		96.5		85.0		78.1
Total Asset Management liabilities		446.9		359.3		316.7
Specialty Insurance Distribution (Distinguished)
Debt		140.8		148.7		—
Premiums and commissions payable		81.3		67.9		—
Other liabilities		85.0		59.4		—
Total Specialty Insurance Distribution liabilities		307.1		276.0		—
Other Operations
Loss and loss adjustment expense reserves		13.6		14.7		12.1
Unearned insurance premiums		9.6		9.5		29.0
Debt		38.3		35.4		22.0
Accrued incentive compensation		102.9		76.0		79.3
Other liabilities		101.4		104.1		33.0
Liabilities held for sale - Bamboo Group		—		312.3		167.7
Liabilities held for sale - Other		3.6		4.3		5.9
Total Other Operations liabilities		269.4		556.3		349.0
Total liabilities		6,051.4		6,628.5		4,794.6
Redeemable noncontrolling interests		131.5		132.4		—
Equity
White Mountains's common shareholders' equity
White Mountains's common shares and paid-in surplus		579.0		584.6		566.4
Retained earnings		4,845.6		4,183.0		3,919.0
Accumulated other comprehensive income (loss), after tax:
Net unrealized gains (losses) from foreign currency translation		.8		—		(1.7)
Total White Mountains's common shareholders' equity		5,425.4		4,767.6		4,483.7
Nonredeemable noncontrolling interests		698.2		817.1		647.3
Total equity		6,123.6		5,584.7		5,131.0
Total liabilities, redeemable noncontrolling interests and equity		$                  12,306.5		$                  12,345.6		$                   9,925.6

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. BOOK VALUE PER SHARE (Unaudited)
		December 31, 2025		September 30, 2025		December 31, 2024		September 30, 2024
Book value per share numerator (in millions):
White Mountains's common shareholders' equity		$           5,425.4		$           4,767.6		$           4,483.7		$           4,610.6
Book value per share denominator (in thousands of shares):
Common shares outstanding		2,479.7		2,575.2		2,568.1		2,568.1
Book value per share		$         2,187.97		$         1,851.33		$         1,745.87		$         1,795.31
Quarter-to-date change in book value per share,    including dividends:		18.2 %		2.6 %		(2.8) %		4.3 %
Year-to-date change in book value per share,    including dividends:		25.4 %		6.1 %		5.5 %		8.5 %
Year-to-date dividends per share		$                1.00		$                1.00		$                1.00		$                1.00

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (millions) (Unaudited)
		Three Months Ended December 31,				Year Ended December 31,
		2025		2024		2025		2024
Revenues:
P&C Insurance and Reinsurance (Ark/WM Outrigger)
Earned insurance premiums		$                433.0		$                414.5		$              1,697.4		$              1,587.8
Net investment income		29.5		24.2		106.5		90.7
Net realized and unrealized investment gains (losses)		26.2		(34.0)		124.6		50.1
Other revenues		4.5		12.7		15.3		22.3
Total P&C Insurance and Reinsurance revenues		493.2		417.4		1,943.8		1,750.9
Financial Guarantee (HG Global)
Earned insurance premiums		8.0		7.4		30.8		31.7
Net investment income		7.3		6.1		27.1		32.2
Net realized and unrealized investment gains (losses)		2.9		(19.6)		23.2		(11.5)
Interest income from BAM surplus notes		7.3		7.9		29.8		15.8
Change in fair value of BAM surplus notes		(37.5)		(15.3)		(37.5)		.5
Unrealized loss on deconsolidation of BAM		—		—		—		(114.5)
Other revenues		—		.1		.2		1.2
Total Financial Guarantee revenues		(12.0)		(13.4)		73.6		(44.6)
Asset Management (Kudu)
Net investment income		22.0		16.6		78.7		66.7
Net realized and unrealized investment gains (losses)		22.6		(26.2)		103.5		51.3
Other revenues		.2		.3		1.2		.8
Total Asset Management revenues		44.8		(9.3)		183.4		118.8
P&C Insurance Distribution (Bamboo)
Commission and fee revenues		44.2		37.3		211.4		134.6
Earned insurance premiums		5.0		12.4		26.7		39.4
Other revenues		1.8		1.3		8.2		5.8
Total P&C Insurance Distribution revenues		51.0		51.0		246.3		179.8
Specialty Insurance Distribution (Distinguished)
Commission and fee revenues		42.6		—		56.7		—
Other revenues		.8		—		1.0		—
Total Specialty Insurance Distribution revenues		43.4		—		57.7		—
Other Operations
Earned insurance premiums		3.1		12.9		22.2		32.7
Net investment income		7.6		7.7		32.1		35.6
Net realized and unrealized investment gains (losses)		30.5		(3.4)		80.0		57.0
Net realized and unrealized investment gains (losses) from    investment in MediaAlpha		28.0		(121.7)		29.6		38.0
Commission and fee revenues		4.0		3.7		16.4		14.8
Net gain on sale of the Bamboo Group		849.3		—		849.3		—
Other revenues		60.9		13.1		200.6		56.8
Total Other Operations revenues		983.4		(87.7)		1,230.2		234.9
Total revenues		$              1,603.8		$                358.0		$              3,735.0		$              2,239.8

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (CONTINUED) (millions) (Unaudited)
		Three Months Ended December 31,				Year Ended December 31,
		2025		2024		2025		2024
Expenses:
P&C Insurance and Reinsurance (Ark/WM Outrigger)
Loss and loss adjustment expenses		$                192.1		$                211.8		$                844.2		$                855.8
Acquisition expenses		106.7		76.3		394.2		307.1
General and administrative expenses		51.0		54.4		205.1		208.4
Change in fair value of contingent consideration		98.8		13.8		173.0		61.3
Interest expense		4.2		4.5		17.1		19.5
Total P&C Insurance and Reinsurance expenses		452.8		360.8		1,633.6		1,452.1
Financial Guarantee (HG Global)
Acquisition expenses		2.1		1.9		8.0		8.2
General and administrative expenses		.5		.9		3.1		35.7
Interest expense		4.0		3.3		17.4		16.7
Total Financial Guarantee expenses		6.6		6.1		28.5		60.6
Asset Management (Kudu)
General and administrative expenses		5.6		4.9		17.9		15.4
Interest expense		7.3		5.4		25.9		22.1
Total Asset Management expenses		12.9		10.3		43.8		37.5
P&C Insurance Distribution (Bamboo)
Broker commission expenses		15.2		13.4		72.0		51.3
Loss and loss adjustment expenses		2.1		6.1		18.0		20.6
Acquisition expenses		1.7		4.4		9.7		14.1
General and administrative expenses		27.4		17.2		96.8		61.1
Interest expense		1.9		—		9.7		—
Total P&C Insurance Distribution expenses		48.3		41.1		206.2		147.1
Specialty Insurance Distribution (Distinguished)
Broker commission expenses		16.6		—		22.1		—
General and administrative expenses		36.8		—		47.0		—
Interest expense		3.8		—		5.1		—
Total Specialty Insurance Distribution expenses		57.2		—		74.2		—
Other Operations
Loss and loss adjustment expenses		1.2		4.0		20.0		12.1
Acquisition expenses		1.3		5.0		8.3		12.1
Cost of sales		46.6		7.4		151.8		29.6
General and administrative expenses		75.0		43.1		236.7		169.5
Interest expense		.9		.9		3.2		2.5
Total Other Operations expenses		125.0		60.4		420.0		225.8
Total expenses		702.8		478.7		2,406.3		1,923.1
Pre-tax income (loss)		901.0		(120.7)		1,328.7		316.7
Income tax (expense) benefit		(87.3)		(3.7)		(126.9)		(32.6)
Net income (loss)		813.7		(124.4)		1,201.8		284.1
Net (income) loss attributable to noncontrolling interests		22.1		(6.0)		(95.4)		(53.7)
Net income (loss) attributable to White Mountains's common shareholders		$                835.8		$              (130.4)		$              1,106.4		$                230.4

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (millions) (Unaudited)
		Three Months Ended December 31,				Year Ended December 31,
		2025		2024		2025		2024
Net income (loss) attributable to White Mountains's common shareholders		$               835.8		$             (130.4)		$           1,106.4		$               230.4
Other comprehensive income (loss), net of tax		1.2		(1.2)		3.7		(.1)
Comprehensive income (loss)		837.0		(131.6)		1,110.1		230.3
Other comprehensive (income) loss attributable to noncontrolling interests		(.4)		.5		(1.2)		—
Comprehensive income (loss) attributable to White Mountains's common shareholders		$               836.6		$             (131.1)		$           1,108.9		$               230.3

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. EARNINGS PER SHARE (Unaudited)
Earnings (loss) per share attributable to White Mountains's    common shareholders		Three Months Ended December 31,				Year Ended December 31,
		2025		2024		2025		2024
Basic earnings (loss) per share		$             327.23		$              (50.78)		$            430.14		$               89.79
Diluted earnings (loss) per share		$             327.23		$              (50.78)		$            430.14		$               89.79
Dividends declared and paid per White Mountains's common share		$                     —		$                     —		$                1.00		$                 1.00

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. QTD SEGMENT STATEMENTS OF PRE-TAX INCOME (LOSS) (millions) (Unaudited)
For the Three Months Ended December 31, 2025		Ark/WM Outrigger
		Ark		WM Outrigger Re		HG Global		Kudu		Bamboo (1)		Distinguished		Other Operations		Total
Revenues:
Earned insurance premiums		$       411.1		$         21.9		$           8.0		$            —		$           5.0		$                    —		$           3.1		$     449.1
Net investment income (2)		27.2		2.3		7.3		22.0		.6		.8		7.6		67.8
Net realized and unrealized     investment gains (losses) (2)		26.1		.1		2.9		22.6		.1		—		30.5		82.3
Net realized and unrealized     investment gains (losses)     from investment in MediaAlpha		—		—		—		—		—		—		28.0		28.0
Interest income from    BAM surplus notes		—		—		7.3		—		—		—		—		7.3
Change in fair value of BAM surplus    notes		—		—		(37.5)		—		—		—		—		(37.5)
Commission and fee revenues		—		—		—		—		44.2		42.6		4.0		90.8
Net gain on sale of the Bamboo Group		—		—		—		—		—		—		849.3		849.3
Other revenues		4.5		—		—		.2		1.1		—		60.9		66.7
Total revenues		468.9		24.3		(12.0)		44.8		51.0		43.4		983.4		1,603.8
Expenses:
Loss and loss adjustment expenses		190.8		1.3		—		—		2.1		—		1.2		195.4
Acquisition expenses		99.1		7.6		2.1		—		1.7		—		1.3		111.8
Cost of sales		—		—		—		—		—		—		46.6		46.6
Broker commission expenses		—		—		—		—		15.2		16.6		—		31.8
General and administrative expenses		51.0		—		.5		5.6		27.4		36.8		75.0		196.3
Change in fair value of contingent    consideration		98.8		—		—		—		—		—		—		98.8
Interest expense		4.2		—		4.0		7.3		1.9		3.8		.9		22.1
Total expenses		443.9		8.9		6.6		12.9		48.3		57.2		125.0		702.8
Pre-tax income (loss)		$         25.0		$         15.4		$       (18.6)		$         31.9		$           2.7		$               (13.8)		$       858.4		$     901.0

(1)	Bamboo's results are from October 1, 2025 through December 5, 2025, the date of sale.
(2)	Net investment income and net realized and unrealized investment gains (losses) for both Bamboo and Distinguished are included in other revenues in the consolidated statement of operations.

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. QTD SEGMENT STATEMENTS OF PRE-TAX INCOME (LOSS) (CONTINUED) (millions) (Unaudited)
For the Three Months Ended December 31, 2024		Ark/WM Outrigger
		Ark		WM Outrigger Re		HG Global		Kudu		Bamboo		Other Operations		Total
Revenues:
Earned insurance premiums		$       389.3		$         25.2		$           7.4		$            —		$         12.4		$         12.9		$     447.2
Net investment income (1)		21.8		2.4		6.1		16.6		.7		7.7		55.3
Net realized and unrealized    investment gains (losses) (1)		(34.0)		—		(19.6)		(26.2)		(.6)		(3.4)		(83.8)
Net realized and unrealized investment gains (losses)      from investment in MediaAlpha		—		—		—		—		—		(121.7)		(121.7)
Interest income from    BAM surplus notes		—		—		7.9		—		—		—		7.9
Change in fair value of BAM surplus    notes		—		—		(15.3)		—		—		—		(15.3)
Commission and fee revenues		—		—		—		—		37.3		3.7		41.0
Other revenues		12.7		—		.1		.3		1.2		13.1		27.4
Total revenues		389.8		27.6		(13.4)		(9.3)		51.0		(87.7)		358.0
Expenses:
Loss and loss adjustment expenses		195.5		16.3		—		—		6.1		4.0		221.9
Acquisition expenses		71.0		5.3		1.9		—		4.4		5.0		87.6
Cost of sales		—		—		—		—		—		7.4		7.4
Broker commission expenses		—		—		—		—		13.4		—		13.4
General and administrative expenses		54.4		—		.9		4.9		17.2		43.1		120.5
Change in fair value of contingent consideration		13.8		—		—		—		—		—		13.8
Interest expense		4.5		—		3.3		5.4		—		.9		14.1
Total expenses		339.2		21.6		6.1		10.3		41.1		60.4		478.7
Pre-tax income (loss)		$         50.6		$           6.0		$       (19.5)		$       (19.6)		$           9.9		$     (148.1)		$    (120.7)

(1)	Bamboo's net investment income and net realized and unrealized investment gains (losses) are included in other revenues in the consolidated statement of operations.

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. YTD SEGMENT STATEMENTS OF PRE-TAX INCOME (LOSS) (millions) (Unaudited)
For the Year Ended December 31, 2025		Ark/WM Outrigger
		Ark		WM Outrigger Re		HG Global		Kudu		Bamboo (1)		Distinguished (2)		Other Operations		Total
Revenues:
Earned insurance premiums		$   1,612.8		$        84.6		$         30.8		$            —		$         26.7		$                    —		$         22.2		$  1,777.1
Net investment income (3)		97.4		9.1		27.1		78.7		2.6		1.0		32.1		248.0
Net realized and unrealized    investment gains (losses) (3)		124.6		—		23.2		103.5		.6		—		80.0		331.9
Net realized and unrealized       investment gains (losses)       from investment in MediaAlpha		—		—		—		—		—		—		29.6		29.6
Interest income from    BAM surplus notes		—		—		29.8		—		—		—		—		29.8
Change in fair value of BAM surplus    notes		—		—		(37.5)		—		—		—		—		(37.5)
Commission and fee revenues		—		—		—		—		211.4		56.7		16.4		284.5
Net gain on sale of the Bamboo Group		—		—		—		—		—		—		849.3		849.3
Other revenues		15.3		—		.2		1.2		5.0		—		200.6		222.3
Total revenues		1,850.1		93.7		73.6		183.4		246.3		57.7		1,230.2		3,735.0
Expenses:
Loss and loss adjustment expenses		818.8		25.4		—		—		18.0		—		20.0		882.2
Acquisition expenses		371.1		23.1		8.0		—		9.7		—		8.3		420.2
Cost of sales		—		—		—		—		—		—		151.8		151.8
Broker commission expenses		—		—		—		—		72.0		22.1		—		94.1
General and administrative expenses		205.0		.1		3.1		17.9		96.8		47.0		236.7		606.6
Change in fair value of contingent    consideration		173.0		—		—		—		—		—		—		173.0
Interest expense		17.1		—		17.4		25.9		9.7		5.1		3.2		78.4
Total expenses		1,585.0		48.6		28.5		43.8		206.2		74.2		420.0		2,406.3
Pre-tax income (loss)		$       265.1		$        45.1		$         45.1		$       139.6		$         40.1		$               (16.5)		$       810.2		$  1,328.7

(1)	Bamboo's results are from January 1, 2025 through December 5, 2025, the date of sale.
(2)	Distinguished's results are from September 2, 2025, the date of acquisition, through December 31, 2025.
(3)	Net investment income and net realized and unrealized investment gains (losses) for both Bamboo and Distinguished are included in other revenues in the consolidated statement of operations.

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. YTD SEGMENT STATEMENTS OF PRE-TAX INCOME (LOSS) (CONTINUED) (millions) (Unaudited)
For the Year Ended December 31, 2024		Ark/WM Outrigger				HG Global
		Ark		WM Outrigger Re		HG Global		BAM		Kudu		Bamboo		Other Operations		Total
Revenues:
Earned insurance premiums		$   1,499.8		$         88.0		$         28.9		$           2.8		$            —		$         39.4		$         32.7		$  1,691.6
Net investment income (1)		79.4		11.3		23.4		8.8		66.7		2.2		35.6		227.4
Net realized and unrealized    investment gains (losses) (1)		50.1		—		(6.4)		(5.1)		51.3		—		57.0		146.9
Net realized and unrealized    investment gains (losses)    from investment in MediaAlpha		—		—		—		—		—		—		38.0		38.0
Interest income (expense) from     BAM surplus notes		—		—		29.0		(13.2)		—		—		—		15.8
Change in fair value of BAM surplus    notes		—		—		.5		—		—		—		—		.5
Unrealized loss on deconsolidation    of BAM		—		—		(114.5)		—		—		—		—		(114.5)
Commission and fee revenues		—		—		—		—		—		134.6		14.8		149.4
Other revenues		22.3		—		.1		1.1		.8		3.6		56.8		84.7
Total revenues		1,651.6		99.3		(39.0)		(5.6)		118.8		179.8		234.9		2,239.8
Expenses:
Loss and loss adjustment expenses		825.9		29.9		—		—		—		20.6		12.1		888.5
Acquisition expenses		283.9		23.2		7.8		.4		—		14.1		12.1		341.5
Cost of sales		—		—		—		—		—		—		29.6		29.6
Broker commission expenses		—		—		—		—		—		51.3		—		51.3
General and administrative expenses		208.3		.1		2.2		33.5		15.4		61.1		169.5		490.1
Change in fair value of contingent       consideration		61.3		—		—		—		—		—		—		61.3
Interest expense		19.5		—		16.7		—		22.1		—		2.5		60.8
Total expenses		1,398.9		53.2		26.7		33.9		37.5		147.1		225.8		1,923.1
Pre-tax income (loss)		$       252.7		$         46.1		$       (65.7)		$       (39.5)		$         81.3		$         32.7		$           9.1		$     316.7

(1)	Bamboo's net investment income and net realized and unrealized investment gains (losses) are included in other revenues in the consolidated statement of operations.

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. SELECTED FINANCIAL DATA ($ in millions) (Unaudited)
Ark/WM Outrigger		Three Months Ended December 31, 2025
		Ark		WM Outrigger Re		Elimination		Total
Insurance premiums:
Gross written premiums		$       268.0		$             .5		$           (.5)		$       268.0
Net written premiums		$       217.8		$             .5		$            —		$       218.3
Net earned premiums		$       411.1		$         21.9		$            —		$       433.0
Insurance expenses:
Loss and loss adjustment expenses		$       190.8		$           1.3		$            —		$       192.1
Acquisition expenses		99.1		7.6		—		106.7
Other underwriting expenses (1)		35.5		—		—		35.5
Total insurance expenses		$       325.4		$           8.9		$            —		$       334.3
Insurance ratios:
Loss and loss adjustment expenses		46.4 %		5.9 %		— %		44.4 %
Acquisition expenses		24.1		34.7		—		24.6
Other underwriting expenses		8.6		—		—		8.2
Combined Ratio		79.1 %		40.6 %		— %		77.2 %

(1)	Included within general and administrative expenses in the consolidated statement of operations.

 

Ark/WM Outrigger		Three Months Ended December 31, 2024
		Ark		WM Outrigger Re		Elimination		Total
Insurance premiums:
Gross written premiums		$       264.3		$           4.5		$         (4.5)		$       264.3
Net written premiums		$       234.4		$           4.5		$            —		$       238.9
Net earned premiums		$       389.3		$         25.2		$            —		$       414.5
Insurance expenses:
Loss and loss adjustment expenses		$       195.5		$         16.3		$            —		$       211.8
Acquisition expenses		71.0		5.3		—		76.3
Other underwriting expenses (1)		32.2		—		—		32.2
Total insurance expenses		$       298.7		$         21.6		$            —		$       320.3
Insurance ratios:
Loss and loss adjustment expense		50.2 %		64.7 %		— %		51.1 %
Acquisition expense		18.2		21.0		—		18.4
Other underwriting expense		8.3		—		—		7.8
Combined Ratio		76.7 %		85.7 %		— %		77.3 %

(1)	Included within general and administrative expenses in the consolidated statement of operations.

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. SELECTED FINANCIAL DATA (CONTINUED) ($ in millions) (Unaudited)
Ark/WM Outrigger		Year Ended December 31, 2025
		Ark		WM Outrigger Re		Elimination		Total
Insurance premiums:
Gross written premiums		$    2,557.2		$         84.2		$       (84.2)		$    2,557.2
Net written premiums		$    1,727.4		$         84.2		$            —		$    1,811.6
Net earned premiums		$    1,612.8		$         84.6		$            —		$    1,697.4
Insurance expenses:
Loss and loss adjustment expenses		$       818.8		$         25.4		$            —		$       844.2
Acquisition expenses		371.1		23.1		—		394.2
Other underwriting expenses (1)		143.9		—		—		143.9
Total insurance expenses		$    1,333.8		$         48.5		$            —		$    1,382.3
Insurance ratios:
Loss and loss adjustment expense		50.8 %		30.0 %		— %		49.7 %
Acquisition expense		23.0		27.3		—		23.2
Other underwriting expense		8.9		—		—		8.5
Combined Ratio		82.7 %		57.3 %		— %		81.4 %

(1)	Included within general and administrative expenses in the consolidated statement of operations.

 

Ark/WM Outrigger		Year Ended December 31, 2024
		Ark		WM Outrigger Re		Elimination		Total
Insurance premiums:
Gross written premiums		$    2,207.0		$         86.5		$       (86.5)		$    2,207.0
Net written premiums		$    1,592.6		$         86.5		$            —		$    1,679.1
Net earned premiums		$    1,499.8		$         88.0		$            —		$    1,587.8
Insurance expenses:
Loss and loss adjustment expenses		$       825.9		$         29.9		$            —		$       855.8
Acquisition expenses		283.9		23.2		—		307.1
Other underwriting expenses (1)		136.1		—		—		136.1
Total insurance expenses		$    1,245.9		$         53.1		$            —		$    1,299.0
Insurance ratios:
Loss and loss adjustment expense		55.1 %		34.0 %		— %		53.9 %
Acquisition expense		18.9		26.3		—		19.3
Other underwriting expense		9.1		—		—		8.6
Combined Ratio		83.1 %		60.3 %		— %		81.8 %

(1)	Included within general and administrative expenses in the consolidated statement of operations.

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. SELECTED FINANCIAL DATA (CONTINUED) ($ in millions) (Unaudited)
		Three Months Ended December 31,				Year Ended December 31,
HG Global		2025		2024		2025		2024
Par value assumed:
Par value of primary market policies assumed (1)		$              858.2		$              853.7		$           2,718.2		$           2,614.0
Par value of secondary market policies assumed (1)		103.6		86.4		451.8		338.4
Total par value of policies assumed		$              961.8		$              940.1		$           3,170.0		$           2,952.4
Reinsurance premiums:
Gross written premiums from primary market		$                14.0		$                13.2		$                43.4		$                36.7
Gross written premiums from secondary market		5.6		4.7		18.0		15.7
Total gross written premiums		19.6		17.9		61.4		52.4
Ceding commission paid		5.8		5.3		18.3		15.4
Total gross written premiums net of ceding commission paid		$                13.8		$                12.6		$                43.1		$                37.0
Earned premiums		$                  8.0		$                  7.4		$                30.8		$                28.9
Pricing:
Gross pricing from primary market		163 bps		155 bps		160 bps		140 bps
Gross pricing from secondary market		541 bps		544 bps		398 bps		464 bps
Total gross pricing		204 bps		190 bps		194 bps		177 bps
Total pricing net of ceding commission paid		143 bps		134 bps		136 bps		125 bps

(1)	For capital appreciation bonds, par is adjusted to the estimated equivalent par value for current interest paying bonds.

 

HG Global		As of December 31, 2025		As of September 30, 2025		As of December 31, 2024
Unearned premiums		$                     327.9		$                     316.3		$                     297.3
Deferred acquisition costs		96.9		93.2		86.6
Unearned premiums, net of deferred acquisition costs		$                     231.0		$                     223.1		$                     210.7

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. SELECTED FINANCIAL DATA (CONTINUED) ($ in millions) (Unaudited)
Kudu		Three Months Ended December 31, 2024		Three Months Ended December 31, 2025		Year Ended December 31, 2024		Year Ended December 31, 2025
Net investment income (1)		$                    16.6		$                    22.0		$                 66.7		$                   78.7
Net realized and unrealized investment gains (losses)		(26.2)		22.6		51.3		103.5
Other revenues		.3		.2		.8		1.2
Total revenues		(9.3)		44.8		118.8		183.4
General and administrative expenses		4.9		5.6		15.4		17.9
Interest expense		5.4		7.3		22.1		25.9
Total expenses		10.3		12.9		37.5		43.8
GAAP pre-tax income (loss)		(19.6)		31.9		81.3		139.6
Income tax (expense) benefit		1.5		(11.7)		(16.8)		(24.2)
GAAP net income (loss)		(18.1)		20.2		64.5		115.4
Add back:
Interest expense		5.4		7.3		22.1		25.9
Income tax expense (benefit)		(1.5)		11.7		16.8		24.2
Depreciation expense		—		.1		.1		.2
Amortization of other intangible assets		.1		.1		.3		.3
EBITDA		(14.1)		39.4		103.8		166.0
Exclude:
Net realized and unrealized investment (gains) losses		26.2		(22.6)		(51.3)		(103.5)
Non-cash equity-based compensation expense		.3		.5		.3		.5
Transaction expenses		1.4		.9		1.7		1.9
Adjusted EBITDA		$                    13.8		$                    18.2		$                 54.5		$                   64.9
Adjustment to annualize partial year revenues from participation contracts acquired								7.4
Adjustment to remove partial year revenues from participation contracts sold								(1.9)
Annualized adjusted EBITDA								$                   70.4
GAAP net investment income (1)								$                   78.7
Adjustment to annualize partial year revenues from participation contracts acquired								7.4
Adjustment to remove partial year revenues from participation contracts sold								(1.9)
Annualized revenue								$                   84.2
Net equity capital drawn								$                 473.8
Debt capital drawn								358.3
Total net capital drawn and invested (2)								$                 832.1
GAAP net investment income    revenue yield								9.5 %
Cash revenue yield								10.1 %
Return on equity								13.2 %

(1)	Net investment income includes revenues from participation contracts and income from short-term and other long-term investments.
(2)	Total net capital drawn represents equity and debt capital drawn and invested less cumulative distributions.

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. SELECTED FINANCIAL DATA (CONTINUED) (millions) (Unaudited)
		Three Months Ended December 31,				Year Ended December 31,
Kudu		2025		2024		2025		2024
Beginning balance of Kudu's participation contracts (1)		$            1,208.2		$               930.6		$            1,008.4		$               890.5
Contributions to participation contracts (2)		82.4		103.3		201.7		103.5
Proceeds from participation contracts sold (2)(3)		(28.2)		—		(28.2)		(37.5)
Net realized and unrealized investment gains (losses) on    participation contracts sold and pending sale (4)		(2.3)		—		7.6		(6.3)
Net unrealized investment gains (losses) on participation    contracts - all other (5)		24.9		(25.5)		95.5		58.2
Ending balance of Kudu's participation contracts (6)		$            1,285.0		$             1008.4		$            1,285.0		$            1,008.4

(1)	As of September 30, 2025, September 30, 2024, December 31, 2024 and December 31, 2023 Kudu's other long-term investments also include $6.2, $6.2, $5.6 and $5.8 related to a private debt instrument.
(2)	Includes $6.6 of non-cash contributions to (proceeds from) participation contracts for the three months and year ended December 31, 2025.
(3)	Includes $28.1 of proceeds receivable from participation contracts sold during the year ended December 31, 2024.
(4)	Includes net realized and unrealized investment gains (losses) recognized from participation contracts beginning in the quarter a contract is classified as pending sale.
(5)	Includes net unrealized investment gains (losses) recognized from (i) ongoing participation contracts and (ii) participation contracts prior to classification as pending sale.
(6)	As of December 31, 2025 and 2024, Kudu's other long-term investments also include $6.4 and $5.6 related to a private debt instrument.

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. SELECTED FINANCIAL DATA (CONTINUED) (millions) (Unaudited)
Bamboo	Three Months Ended December 31, 2024		October 1, 2025 - December 5, 2025		Year Ended December 31, 2024		January 1, 2025 - December 5, 2025
Commission and fee revenues	$                     37.3		$                  44.2		$                134.6		$                211.4
Earned insurance premiums	12.4		5.0		39.4		26.7
Other revenues	1.3		1.8		5.8		8.2
Total revenues	51.0		51.0		179.8		246.3
Broker commission expenses	13.4		15.2		51.3		72.0
Loss and loss adjustment expenses	6.1		2.1		20.6		18.0
Acquisition expenses	4.4		1.7		14.1		9.7
General and administrative expenses	17.2		27.4		61.1		96.8
Interest expense	—		1.9		—		9.7
Total expenses	41.1		48.3		147.1		206.2
GAAP pre-tax income (loss)	9.9		2.7		32.7		40.1
Income tax (expense) benefit	(2.7)		(2.8)		(6.9)		(12.0)
GAAP net income (loss)	7.2		(.1)		25.8		28.1
Exclude:
Net (income) loss, Bamboo captive	.9		(1.7)		(1.0)		1.0
MGA net income (loss)	8.1		(1.8)		24.8		29.1
Add back:
Interest expense	—		1.9		—		9.7
Income tax expense (benefit)	2.7		2.8		6.9		12.0
Depreciation expense	.2		—		.3		1.4
Amortization of other intangible assets	4.0		—		16.4		12.0
MGA EBITDA	15.0		2.9		48.4		64.2
Exclude:
Non-cash equity-based compensation expense	.6		13.3		1.6		19.8
Software implementation expenses	.5		1.5		1.9		4.3
Restructuring expenses	.1		—		.8		2.3
Transaction expenses	—		.1		—		.8
MGA adjusted EBITDA	$                     16.2		$                  17.8		$                  52.7		$                  91.4

 

WHITE MOUNTAINS INSURANCE GROUP, LTD. SELECTED FINANCIAL DATA (CONTINUED) (millions) (Unaudited)
Distinguished	Three Months Ended December 31, 2025		September 2, 2025 - December 31, 2025
Commission and fee revenues	$                           42.6		$                           56.7
Other revenues	.8		1.0
Total revenues	43.4		57.7
Broker commission expenses	16.6		22.1
General and administrative expenses	36.8		47.0
Interest expense	3.8		5.1
Total expenses	57.2		74.2
GAAP pre-tax income (loss)	(13.8)		(16.5)
Income tax (expense) benefit	2.6		2.6
GAAP net income (loss)	(11.2)		(13.9)
Exclude:
Net (income) loss, GrowthCo	8.7		9.8
ScaleCo net income (loss)	(2.5)		(4.1)
Add back:
Interest expense	3.8		5.1
Income tax expense (benefit)	(2.6)		(2.6)
Depreciation expense	.1		.2
Amortization of other intangible assets	7.8		7.8
ScaleCo EBITDA	6.6		6.4
Exclude:
Non-cash equity-based compensation expense	1.4		2.2
Transaction expenses	.5		.5
ScaleCo adjusted EBITDA	$                             8.5		$                             9.1

Regulation G

This earnings release includes non-GAAP financial measures that have been reconciled from their most comparable GAAP financial measures.

• Kudu's EBITDA, adjusted EBITDA, annualized adjusted EBITDA, annualized revenue and cash revenue yield are non-GAAP financial measures.

EBITDA is a non-GAAP financial measure that adds back interest expense on debt, income tax (expense) benefit, depreciation and amortization of other intangible assets to 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 added back to calculate EBITDA.  The items relate to (i) net realized and unrealized investment gains (losses) on Kudu's revenue and earnings participation contracts, (ii) non-cash equity-based compensation expense and (iii) transaction expenses.  A description of each item follows:

• • Net realized and unrealized investment gains (losses) - Represents net unrealized investment gains and losses recorded on Kudu's revenue and earnings participation contracts, which are recorded at fair value under GAAP, and realized investment gains and losses from 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.

Annualized adjusted EBITDA is a non-GAAP financial measure that (i) annualizes partial year revenues related to Kudu's revenue and earnings participation contracts acquired during the previous 12-month period and (ii) removes partial year revenues related to revenue and earnings participation contracts sold during the previous 12-month period.

Annualized revenue is a non-GAAP financial measure that adds the adjustments for annualized adjusted EBITDA to GAAP net investment income. 

Cash revenue yield is a non-GAAP financial measure that is derived using annualized revenue as a percentage of total net capital drawn and invested.  The most directly comparable GAAP financial measure is net investment income revenue yield, which is derived using GAAP net investment income as a percentage of total net capital drawn and invested.                                                                                             

White Mountains believes that these non-GAAP financial measures are useful to management and investors in evaluating Kudu's performance.  White Mountains also believes that annualized adjusted EBITDA is useful to management and investors in understanding the full earnings profile of Kudu's business as of the end of any 12-month period.  See page 20 for the reconciliation of Kudu's GAAP net income (loss) to EBITDA, adjusted EBITDA and annualized adjusted EBITDA, and the reconciliation of Kudu's GAAP net investment income to annualized revenue.

• Bamboo's MGA pre-tax income (loss), MGA net income (loss), MGA EBITDA and MGA adjusted EBITDA are non-GAAP financial measures.

MGA pre-tax income (loss) and MGA net income (loss) are non-GAAP financial measures that exclude the results of the Bamboo captive, which is consolidated under GAAP, from Bamboo's consolidated GAAP pre-tax income (loss) and net income (loss). 

The following table presents the reconciliation from Bamboo's consolidated GAAP pre-tax income (loss) to MGA pre-tax income (loss):     

Millions		October 1, 2025 - December 5, 2025		Three Months Ended December 31, 2024		January 1, 2025 - December 5, 2025		Year Ended December 31, 2024
Bamboo's consolidated GAAP    pre-tax income (loss)		$                          2.7		$                             9.9		$                        40.1		$                        32.7
Remove pre-tax (income) loss,    Bamboo captive		(1.7)		.9		1.0		(1.0)
MGA pre-tax income (loss)		$                          1.0		$                           10.8		$                        41.1		$                        31.7

MGA EBITDA is a non-GAAP financial measure that adds back interest expense on debt, income tax (expense) benefit, depreciation and amortization of other intangible assets to MGA net income (loss).

MGA adjusted EBITDA is a non-GAAP financial measure that excludes certain other items in GAAP net income (loss) in addition to those added back to calculate MGA EBITDA.  The items relate to (i) non-cash equity-based compensation expense, (ii) software implementation expenses, (iii) restructuring expenses and (iv) transaction expenses.  A description of each item follows:

• • Non-cash equity-based compensation expense - Represents non-cash expenses related to Bamboo's management compensation that are settled with equity units in Bamboo.
  • Software implementation expenses - Represents costs directly related to Bamboo's implementation of new software.
  • Restructuring expenses - Represents costs directly related to Bamboo's corporate restructuring and capital planning activities.
  • Transaction expenses - Represents costs directly related to transaction activities at Bamboo, 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 Bamboo's performance.  See page 22 for the reconciliation of Bamboo's consolidated GAAP net income (loss) to MGA net income (loss), MGA EBITDA and MGA adjusted EBITDA.

• Distinguished's ScaleCo net income (loss), ScaleCo EBITDA and ScaleCo adjusted EBITDA are non-GAAP financial measures.  

ScaleCo net income (loss) is a non-GAAP financial measure that excludes the results of the GrowthCo vertical, which is consolidated under GAAP, from Distinguished's consolidated GAAP net income (loss). 

ScaleCo EBITDA is a non-GAAP financial measure that adds back interest expense on debt, income tax (expense) benefit, depreciation and amortization of other intangible assets to ScaleCo net income (loss).

ScaleCo adjusted EBITDA is a non-GAAP financial measure that excludes certain other items in GAAP net income (loss) in addition to those items added back to calculate ScaleCo EBITDA.  The items relate to (i) non-cash equity-based compensation expense and (ii) transaction expenses.  A description of each item follows:

• • Non-cash equity-based compensation expense - Represents non-cash expenses related to Distinguished's management compensation that are settled with equity units in Distinguished.
  • Transaction expenses - Represents costs directly related to transaction activities at Distinguished, 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 Distinguished's performance.  White Mountains also believes that excluding the results of the GrowthCo vertical, which Distinguished views as an investment in start-up programs, is useful to understanding the performance of Distinguished's established programs.  See page 23 for the reconciliation of Distinguished's consolidated GAAP net income (loss) to ScaleCo net income (loss), ScaleCo EBITDA and ScaleCo adjusted EBITDA.

• Total consolidated portfolio return excluding MediaAlpha and total equity portfolio return excluding MediaAlpha are non-GAAP financial measures that remove the net investment income and net realized and unrealized investment gains (losses) from White Mountains's investment in MediaAlpha.  White Mountains believes these measures to be useful to management and investors by showing the underlying performance of White Mountains's investment portfolio and equity portfolio without regard to White Mountains's investment in MediaAlpha.  The following tables present reconciliations from GAAP to the reported percentages:

		Three Months Ended December 31,				Year Ended December 31,
		2025		2024		2025		2024
Total consolidated portfolio return		2.3 %		(2.3) %		9.1 %		6.9 %
Remove MediaAlpha		(0.3)		1.9		(0.2)		(0.4)
Total consolidated portfolio return    excluding MediaAlpha		2.0 %		(0.4) %		8.9 %		6.5 %

 

		Three Months Ended December 31, 2025		Year Ended December 31, 2025
Total equity portfolio return		3.9 %		13.1 %
Remove MediaAlpha		(0.7)		(0.1)
Total equity portfolio return     excluding MediaAlpha		3.2 %		13.0 %

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995

This earnings release 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 release 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 per share or return on equity;
• business strategy;
• financial and operating targets or plans;
• incurred loss and loss adjustment expenses and the adequacy of its loss and loss adjustment expense 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 that are described from time to time in White Mountains's filings with the Securities and Exchange Commission, including but not limited to White Mountains's 2024 Annual Report on Form 10-K;
• claims arising from catastrophic events, such as hurricanes, windstorms, earthquakes, floods, wildfires, tornadoes, tsunamis, severe weather, public health crises, terrorist attacks, war and war-like actions, explosions, infrastructure failures or cyber attacks;
• recorded loss reserves subsequently proving to have been inadequate;
• the market value of White Mountains's investment in MediaAlpha;
• 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 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.

Consequently, all of the forward-looking statements made in this earnings release 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.

 

View original content:https://www.prnewswire.com/news-releases/white-mountains-reports-fourth-quarter-results-302681253.html

SOURCE White Mountains Insurance Group, Ltd.

FAQ

What is White Mountains' book value per share (WTM) as of Dec 31, 2025?

WTM reported book value per share of $2,188 as of December 31, 2025. According to the company, that represents an 18% increase in Q4 and a 25% increase for the full year, inclusive of dividends and significant transaction gains.

How did the Bamboo sale affect White Mountains' 2025 results and BVPS (WTM)?

The Bamboo sale materially boosted results, adding roughly $320 to BVPS in 2025. According to the company, White Mountains received $848 million net cash at closing and retained a 15% equity stake valued at $250 million as of December 31, 2025.

How much share repurchase activity did White Mountains (WTM) complete in Q4 2025?

White Mountains repurchased roughly $190 million of its shares during the fourth quarter of 2025. According to the company, this figure includes activity from its self-tender offer and reflects capital returned alongside retained undeployed capital.

What were Ark's key insurance metrics for 2025 reported by White Mountains (WTM)?

Ark produced full-year gross written premiums of $2.6 billion and an 83% combined ratio for 2025. According to the company, GWP rose 16% year-over-year, aided by new underwriting teams and product expansion, while the combined ratio included catastrophe impacts.

How much undeployed capital did White Mountains (WTM) report after Q4 2025?

Undeployed capital was reported at about $1.0 billion, including a distribution from WM Outrigger Re received in January. According to the company, that total reflects available capital after the Bamboo transaction and recent share repurchases.