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Debt | 12 Months Ended
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Dec. 31, 2024
Debt Disclosure [Abstract] |
Debt | Debt The following table presents White Mountains’s debt outstanding as of December 31, 2024 and 2023:
|  |  |  | Effective |  |  |  | Effective
$ in Millions |  | December 31, 2024 |  | Rate (1) |  | December 31, 2023 |  | Rate (1)
Ark 2007 Subordinated Notes, carrying value |  | $ | — |  |  |  |  | $ | 30.0 |  |  |
Ark 2021 Subordinated Notes Tranche 1 |  | 41.1 |  |  |  |  | 42.7 |  |  |
Ark 2021 Subordinated Notes Tranche 2 |  | 47.0 |  |  |  |  | 47.0 |  |  |
Ark 2021 Subordinated Notes Tranche 3 |  | 70.0 |  |  |  |  | 70.0 |  |  |
Unamortized issuance cost |  | (3.6) |  |  |  |  | (4.2) |  |  |
Ark 2021 Subordinated Notes, carrying value |  | 154.5 |  |  |  |  | 155.5 |  |  |
Total Ark Subordinated Notes, carrying value |  | 154.5 |  |  | 11.8% |  | 185.5 |  |  | 11.0%
HG Global Senior Notes (2) |  | 150.0 |  |  |  |  | 150.0 |  |  |
Unamortized discount and issuance cost |  | (2.6) |  |  |  |  | (3.1) |  |  |
HG Global Senior Notes, carrying value |  | 147.4 |  | 11.8% |  | 146.9 |  |  | 11.9%
Kudu Credit Facility (2) |  | 245.3 |  |  |  |  | 210.3 |  |  |
Unamortized issuance cost |  | (6.7) |  |  |  |  | (6.5) |  |  |
Kudu Credit Facility, carrying value |  | 238.6 |  |  | 10.3% |  | 203.8 |  |  | 10.1%
Other Operations debt |  | 22.4 |  |  |  |  | 28.9 |  |  |
Unamortized issuance cost |  | (.4) |  |  |  |  | (.5) |  |  |
Other Operations debt, carrying value |  | 22.0 |  |  | 10.2% |  | 28.4 |  |  | 10.2%
Total debt |  | $ | 562.5 |  |  |  |  | $ | 564.6 |  |  |
(1) Effective rate includes the effect of the amortization of debt issuance costs and the original issue discount. (2) Effective rate excludes the effect of the interest rate caps. See Note 9 — “Derivatives.” The following table presents a schedule of contractual repayments of White Mountains’s debt as of December 31, 2024:
Millions |  | December 31, 2024
Due in one year or less |  | $ | 6.7 |
Due in two to three years |  | 27.0 |
Due in four to five years |  | 30.0 |
Due after five years |  | 512.1 |
Total |  | $ | 575.8 |
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 Subordinated Notes”). The Ark 2007 Subordinated Notes, which had a maturity date of June 2037, accrued interest at a floating rate equal to the three-month U.S. London Inter-Bank Offered Rate (“LIBOR”) plus 4.6% per annum. During 2024, Ark repaid the outstanding balance of $30.0 million and extinguished the Ark 2007 Subordinated Notes. 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 (collectively, the “Ark 2021 Subordinated Notes”). The Ark 2021 Subordinated 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 Euro Interbank Offered Rate (EURIBOR) plus 5.75% per annum. 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, accrued 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 Secured Overnight Financing Rate (“SOFR”) plus a SOFR benchmark adjustment 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, accrued 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 SOFR benchmark adjustment 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 event until such event is remedied. Premium load 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 its 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 event exists or will be caused by the restricted payment. As of December 31, 2024, there were no premium load events. As of December 31, 2024, the Ark 2021 Subordinated Notes Tranche 1 had an outstanding balance of €39.1 million ($41.1 million based upon the foreign exchange spot rate as of December 31, 2024), 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 Standby Letter of Credit Facilities In December 2021, Ark entered into two uncommitted secured standby letter of credit facility agreements to support the continued growth and expansion of GAIL’s insurance and reinsurance operations. The standby 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 January 1, 2024, the ING LOC Facility was undrawn, and the availability period expired. Ark did not renew the credit facility. As of December 31, 2024, the Citibank LOC Facility had an outstanding balance of $101.7 million and cash and investments pledged as collateral of $141.1 million. As of December 31, 2024, the Lloyds LOC Facility had an outstanding balance of $42.7 million and cash and investments pledged as collateral of $67.1 million. Ark’s uncommitted secured standby letter of credit facility agreements contain various representations, warranties as well as affirmative and negative covenants that White Mountains considers to be customary for such borrowings. HG 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 SOFR plus a SOFR benchmark adjustment 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 “HG Global 2022 Interest Rate Cap”). Under the HG Global 2022 Interest Rate Cap, the notional amount is $150.0 million, the maximum interest rate is 9.76% per annum and the termination date is July 25, 2025. On August 22, 2024, HG Global entered into a new interest rate cap agreement, effective upon the termination of the prior interest rate cap (the “HG Global 2024 Interest Rate Cap”). Under the HG Global 2024 Interest Rate Cap, the initial notional amount is $150.0 million, the maximum interest rate is 10.76% per annum and the termination date is July 25, 2028. 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, subject to a maximum required balance of $29.3 million as of December 31, 2024. As of December 31, 2024 and 2023, the interest reserve account held short-term investments of $29.3 million and $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, 2024, the HG Global Senior Notes had an investment grade rating. As of December 31, 2024, the HG Global Senior Notes had an outstanding balance of $150.0 million. Kudu Credit Facility On March 23, 2021, Kudu entered into a secured revolving credit facility (the “Kudu Credit Facility”) with Mass Mutual to repay its prior credit facility and to fund new investments and related transaction expenses. The maximum borrowing capacity of the Kudu Credit Facility was $300.0 million. On June 28, 2024, Kudu amended the Kudu Credit Facility, and the total commitment increased from $300.0 million to $350.0 million. The Kudu Credit Facility matures on March 23, 2036. Through June 2023, interest on the Kudu Credit Facility accrued at a floating interest rate equal to the greater of the three-month LIBOR or 0.25%, plus in each case, 4.30% per annum. Effective July 2023, the Kudu Credit Facility accrued interest at a floating interest rate equal to the three-month SOFR plus a SOFR benchmark adjustment of 0.26% and a stated margin of 4.30% per annum. Under the amended terms, effective July 2024, the Kudu Credit Facility will accrue interest at a floating interest rate equal to the three-month SOFR plus a stated margin of 4.45% per annum with no SOFR benchmark adjustment. On September 17, 2024, Kudu entered into an interest rate cap agreement, effective on September 30, 2024, to limit its exposure to the risk of interest rate increases on the Kudu Credit Facility (the “Kudu Interest Rate Cap”). Under the Kudu Interest Rate Cap, the notional amount is $150.0 million, the maximum interest rate is 8.95% per annum and the termination date is September 30, 2027. See Note 9 — “Derivatives.” The Kudu Credit Facility requires Kudu to maintain an interest reserve account of four times the interest accrued for the most recent quarterly interest period. As of December 31, 2024 and 2023, the interest reserve account held short-term investments of $15.1 million and $14.9 million. The Kudu Credit Facility requires Kudu to maintain a maximum ratio of the outstanding balance to the sum of the fair market value of Kudu’s other long-term investments and cash held in certain accounts (the “LTV Percentage”) for annual periods after the June 28, 2024 effective date of the amendment as follows: 50% in years 0-3, 40% in years 4-5, 25% in years 6-7, 15% in years 8-10 and 0% thereafter. As of December 31, 2024, Kudu had a 23.6% LTV Percentage. Kudu may borrow undrawn balances until June 28, 2027, 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 Participation Contracts. The following table presents the change in debt under the Kudu Credit Facility for the years ended December 31, 2024, 2023 and 2022:
|  | Year Ended December 31,
Millions |  | 2024 |  | 2023 |  | 2022
Kudu Credit Facility |  |  |  |  |  |
Beginning balance |  | $ | 210.3 |  |  | $ | 215.2 |  |  | $ | 225.4 |
Term loans |  |  |  |  |  |
Borrowings |  | 35.0 |  |  | 12.0 |  |  | 35.0 |
Repayments |  | — |  |  | (16.9) |  |  | (45.2) |
Ending balance |  | $ | 245.3 |  |  | $ | 210.3 |  |  | $ | 215.2 |
The Kudu Credit Facility is secured by all property of the loan parties and contains various representations, warranties as well as affirmative and negative covenants that White Mountains considers to be customary for such borrowings. Other Operations Debt As of December 31, 2024, White Mountains’s Other Operations had debt with an outstanding balance of $22.4 million, which consisted of four secured credit facilities (collectively, “Other Operations debt”). Compliance As of December 31, 2024, White Mountains was in compliance, in all material respects, with all of the covenants under its debt instruments. Interest Total interest expense incurred by White Mountains for its indebtedness was $60.8 million, $62.7 million and $40.3 million for the years ended December 31, 2024, 2023 and 2022. Total interest paid by White Mountains for its indebtedness was $61.0 million, $42.2 million and $30.5 million for the years ended December 31, 2024, 2023 and 2022.

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