STOCK TITAN

Sompo backs Aspen Insurance (AHL) notes as earnings shrink

(Neutral)
(Neutral)
Form Type
6-K

Rhea-AI Filing Summary

Aspen Insurance Holdings Limited completed internal reorganization steps on August 14, 2026, transferring Aspen U.S. Holdings, Inc. and key U.S. and Bermuda insurance subsidiaries to Sompo International’s affiliate Endurance U.S. Holdings Corp. In return, Aspen received $2.722 billion of intragroup loan notes from a related party, reclassifying economic exposure from underwriting subsidiaries to an investment-grade receivable.

Sompo International entered a Seventh Supplemental Indenture, providing a guarantee of Aspen’s 5.750% Senior Notes due 2030, and a Keepwell and Financial Support Agreement to support Aspen’s capital and potential preference share dividends. Unaudited pro forma data for 2025 show total assets decreasing from $16.3 billion to $10.5 billion and net income from $340.2 million to $66.7 million after de‑consolidating the transferred subsidiaries and recognizing interest income on the new related‑party notes.

Positive

  • Sompo International guarantees Aspen’s 5.750% Senior Notes due 2030, adding explicit parent backing for noteholders.
  • A Keepwell and Financial Support Agreement commits Sompo International to support Aspen’s capital and potential Preference Share dividends with cash payments if needed.
  • Aspen receives $2.722 billion in related‑party loan notes from Endurance U.S. Holdings Corp., replacing transferred subsidiaries with an investment‑grade intragroup asset.

Negative

  • Pro forma 2025 net income falls from $340.2 million to $66.7 million after the disposition, reflecting a materially smaller consolidated earnings base.
  • Pro forma 2025 total revenues decline from $3,219.6 million to $959.1 million, indicating a significant reduction in consolidated underwriting and investment activity.
  • Pro forma total assets decrease from $16,309.6 million to $10,531.7 million, showing a substantially smaller consolidated balance sheet post‑transaction.

Filing Explained

Aspen now holds four interest-bearing related-party notes, while the debt guarantee is contractually effective only upon Closing.

The transfer of Aspen’s U.S. insurance subsidiaries is reported completed on August 14, 2026, while the supplemental indenture states that Sompo’s guarantee becomes effective upon the occurrence of the Closing; the filing therefore establishes the transfer’s completion but ties the guarantee to that milestone.

The $2.722 billion consideration is a related-party receivable structured as four interest-bearing notes requiring monthly interest payments, rather than an offering of new shares or a cash issuance to public holders.

Because the transaction is between entities under common control, the filing says no gain or loss was recorded; the difference between consideration and transferred net assets was recorded through additional paid-in capital.

The pro forma exhibit is illustrative and says it does not show future-period results or results actually realized had the reorganization occurred during the presented period; subsequent reporting will establish the post-transfer operating results.

Intragroup consideration $2.722 billion Loan notes received from Endurance U.S. Holdings Corp. for transfer of AUSH and subsidiaries, effective August 14, 2026
Pro forma total assets $10,531.7 million Aspen pro forma condensed balance sheet as of December 31, 2025 after disposition
Reported total assets $16,309.6 million Aspen historical condensed balance sheet as of December 31, 2025 before pro forma adjustments
Pro forma net income $66.7 million Aspen pro forma condensed statement of operations for the year ended December 31, 2025
Reported net income $340.2 million Aspen historical net income for the year ended December 31, 2025 before transaction effects
Interest income on related party notes $133.7 million Pro forma 2025 interest income on notes issued as consideration for AUSH transfer
Pro forma total revenues $959.1 million Pro forma condensed statement of operations for the year ended December 31, 2025
Pro forma total liabilities $6,963.6 million Aspen pro forma condensed balance sheet as of December 31, 2025
Keepwell and Financial Support Agreement financial
"Sompo International agreed to provide certain cash payments to the Company if necessary"
common control transaction financial
"The transactions are between entities of the same ultimate parent and thus accounted for as a common control transaction"
Guaranteed Obligations financial
"all the foregoing being hereinafter collectively called the “Guaranteed Obligations”"
unaudited pro forma condensed consolidated financial statements financial
"Unaudited pro forma condensed consolidated combined financial statements as of and for the year ended"
de-consolidating financial
"impact of de-consolidating the transferred subsidiaries, the consideration received"
defeasance financial
"until payment in full of the Guaranteed Obligations or the Guaranteed Obligations shall have been deemed paid and discharged by defeasance"
Defeasance is a legal process where a borrower replaces the collateral securing a loan with safe, interest-paying government securities that mimic the loan’s payment schedule, thereby releasing the original asset from the loan. For investors, defeasance matters because it shifts what actually backs the debt—reducing credit risk tied to the original asset but changing recovery rights and market liquidity, which can affect bond prices, yields and the ease of selling the asset.

FAQ

What major transaction did Aspen Insurance Holdings (AHL) complete with Sompo International in 2026?

Aspen transferred Aspen U.S. Holdings, Inc. and key U.S. and Bermuda subsidiaries to Sompo’s affiliate Endurance U.S. Holdings Corp. for $2.722 billion in intragroup loan notes, simplifying the group structure and integrating operations within the Sompo International organization.

How did the 2026 restructuring affect Aspen (AHL)’s pro forma 2025 net income?

Pro forma 2025 net income decreases to $66.7 million from reported $340.2 million. The reduction primarily reflects de‑consolidation of transferred subsidiaries, partially offset by $133.7 million of interest income on new related‑party notes from Endurance U.S. Holdings Corp.

What balance sheet changes result from Aspen (AHL)’s pro forma adjustments?

Pro forma total assets fall from $16,309.6 million to $10,531.7 million, and total liabilities from $12,684.5 million to $6,963.6 million. Aspen also records $2,722.0 billion in notes due from a related party and $585.0 million of funds held under reinsurance contracts.

What new guarantees did Sompo International provide for Aspen (AHL)’s debt and capital?

Sompo International guaranteed all payment obligations on Aspen’s 5.750% Senior Notes due 2030 via a Seventh Supplemental Indenture and entered a Keepwell and Financial Support Agreement to provide cash support for Aspen’s capital and any declared Preference Share dividends.

How were Aspen (AHL)’s 2026 intragroup transfers accounted for in the pro forma statements?

The transfers were treated as a common control transaction, with no gain or loss recorded. The difference between the $2.722 billion consideration and the carrying value of net assets transferred was recorded in equity, mainly impacting additional paid‑in capital.

How did the restructuring affect Aspen (AHL)’s pro forma revenues and expenses?

Pro forma 2025 total revenues decline to $959.1 million from $3,219.6 million, mainly due to lower net earned premiums and investment income after de‑consolidation. Pro forma total expenses reduce to $874.3 million from $2,775.5 million, reflecting removal of transferred subsidiaries’ costs.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of August 2026

Commission File Number: 001-31909



ASPEN INSURANCE HOLDINGS LIMITED

(Translation of registrant’s name into English)

Waterloo House
100 Pitts Bay Road
Pembroke HM 08
Bermuda

(Address of principal executive office)


Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F  ý Form 40-F  ¨







INTEGRATION TRANSACTIONS

On February 24, 2026, Sompo International Holdings Ltd., a Bermuda exempted company limited by shares (“Sompo International”, and, together with its subsidiaries, the “Sompo International Group”), through its direct wholly owned subsidiary, Endurance Specialty Insurance Ltd., completed the acquisition of Aspen Insurance Holdings Limited, a Bermuda exempted company limited by shares (the “Company”, and together with its subsidiaries, the “Aspen Group”). As part of the continued integration of the Aspen Group into the Sompo International Group, on August 14, 2026, the Company completed a series of transactions to simplify its corporate structure and harmonize its operations with those of the Sompo International Group. In connection with these transactions, the Company contributed all of its shares in Aspen Bermuda Limited, a Bermuda exempted company limited by shares (“ABL”) and direct wholly owned subsidiary of the Company, through a series of contributions to another of the Company’s indirect wholly owned subsidiaries, Aspen Re America, Inc., a Delaware corporation. Thereafter, Aspen (UK) Holdings Limited, a company incorporated in England and Wales (“AUKH”) and an indirect wholly owned subsidiary of the Company, transferred all of its shares in Aspen U.S. Holdings, Inc., a Delaware corporation (“AUSH”) and an indirect wholly owned subsidiary of the Company, to Endurance U.S. Holdings Corp., a Delaware corporation (“EUSH”) and an indirect wholly owned subsidiary of Sompo International. EUSH issued $2.722 billion of intragroup debt to AUKH, pursuant to which EUSH is obligated to make payments to AUKH on the terms set forth therein. In addition, in connection with the transfer of AUSH to EUSH, AUSH merged with and into EUSH, with EUSH surviving the merger. As a result of the merger of AUSH and EUSH, all of the pre-merger subsidiaries of AUSH (including Aspen American Insurance Company, Aspen Specialty Insurance Company and ABL) are now owned by EUSH.

In connection with the foregoing, Sompo International and the Company entered into (i) the Seventh Supplemental Indenture with Deutsche Bank Trust Company Americas as trustee, pursuant to which Sompo International agreed to guarantee all payment obligations of the Company with respect to the Company’s 5.750% Senior Notes due 2030 and other guaranteed obligations (as defined therein) under the Indenture, dated as of August 16, 2004, as amended, and (ii) a Keepwell and Financial Support Agreement pursuant to which Sompo International agreed to provide certain cash payments to the Company if necessary to maintain its capital and surplus and to support any payments to holders of the Company's outstanding Preference Shares if and when the board of directors of the Company determines to declare dividends on the Preference Shares.

CAUTIONARY STATEMENTS REGARDING FORWARD-LOOKING STATEMENTS

This Report of Foreign Private Issuer on Form 6-K contains forward-looking statements within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995 and other applicable securities laws. The forward-looking statements in this report are subject to numerous risks, uncertainties, estimates and assumptions. Given these risks and uncertainties, you should not place undue reliance on forward-looking statements as a prediction of actual results. Accordingly, any such statements are qualified in their entirety by reference to, and are accompanied by, important factors included in “Part I-Item 3.D.-Risk Factors” in our Annual Report on Form 20-F for the year ended December 31, 2025 and in any subsequent reports on Form 6-K (in addition to any assumptions and other factors referred to specifically in connection with such forward-looking statements).

EXHIBIT INDEX
Exhibit No.         Description                                    
99.1        Seventh Supplemental Indenture, dated as of August 14, 2026, among Aspen Insurance Holdings Limited, Sompo International Holdings Ltd., as guarantor and Deutsche Bank Trust Company Americas, as trustee.

99.2        Unaudited pro forma condensed consolidated combined financial statements as of and for the year ended December 31, 2025 of Aspen Insurance Holdings Limited.



SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
 
ASPEN INSURANCE HOLDINGS LIMITED

Dated: August 18, 2026By:/s/ Carrie Rosorea
Name:Carrie Rosorea
Title:Chief Financial Officer

Exhibit 99.1
SEVENTH SUPPLEMENTAL INDENTURE
SEVENTH SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”) dated as of August 14, 2026 among ASPEN INSURANCE HOLDINGS LIMITED, a Bermuda limited company, as issuer (the “Company”), DEUTSCHE BANK TRUST COMPANY AMERICAS, a New York banking corporation, not in its individual capacity but solely in its capacity as trustee hereunder (together with its successors and assigns in such capacity, the “Trustee”) and SOMPO INTERNATIONAL HOLDINGS LTD., as guarantor (the “Guarantor”).
W I T N E S S E T H
WHEREAS, the Company heretofore executed and delivered to the Trustee the Base Indenture, dated as of August 16, 2004, to provide, among other things, for the issuance of unsecured debt securities, debentures, notes, bonds or other evidences of indebtedness in an unlimited aggregate principal amount to be issued from time to time in one or more series (the “Original Indenture”);
WHEREAS, the Company has heretofore executed and delivered to the Trustee, (i) the Fourth Supplemental Indenture, dated as of June 27, 2019 (the “Fourth Supplemental Indenture”), (ii) the Fifth Supplemental Indenture, dated as of June 13, 2025 pursuant to which the Company’s 5.750% Senior Notes due 2030 (the “Notes”) were established and issued (the “Fifth Supplemental Indenture”) and (iii) the Sixth Supplemental Indenture, dated as of February 24, 2026 (together with the Original Indenture, the Fourth Supplemental Indenture, the Fifth Supplemental Indenture and this Supplemental Indenture, the “Indenture”);
WHEREAS, the Company desires to supplement the Indenture to add a guarantee of the Notes and the obligations under the Indenture by the Guarantor as provided in Article II of this Supplemental Indenture;
WHEREAS, pursuant to Section 10.1(c) of the Original Indenture, the Trustee, the Guarantor and the Company are authorized to execute and deliver this Supplemental Indenture; and
WHEREAS, all the conditions and requirements necessary to make this Supplemental Indenture, when duly executed and delivered, a valid and legally binding agreement in accordance with its terms and for the purposes herein expressed have been performed and fulfilled.
NOW THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the Company, the Guarantor and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders as follows:



ARTICLE I

DEFINITIONS
1.1Defined Terms. As used in this Supplemental Indenture, terms defined in the Original Indenture or in the preamble or recital hereto are used herein as therein defined. The words “herein,” “hereof,” “hereby” and other words of similar import used in this Supplemental Indenture refer to this Supplemental Indenture as a whole and not to any particular section hereof.
ARTICLE II

GUARANTEES
2.1Guarantees.
(a)The Guarantor hereby guarantees (the “Guarantee”) to each Holder and to the Trustee, successors and assigns (1) the full and punctual payment when due, whether at Stated Maturity, by acceleration, by redemption or otherwise, of all obligations of the Company under the Indenture (including obligations to the Trustee) and the Notes, whether for payment of principal of, interest or premium, if any, on the Notes and all other monetary obligations of the Company under the Indenture and the Notes and (2) the full and punctual performance within applicable grace periods of all other obligations of the Company, whether for fees, expenses, indemnification or otherwise under the Indenture and the Notes (all the foregoing being hereinafter collectively called the “Guaranteed Obligations”). The Guarantor further agrees that the Guaranteed Obligations may be extended or renewed, in whole or in part, without notice or further assent from the Guarantor, and that the Guarantor shall remain bound under this Article II notwithstanding any extension or renewal of any Guaranteed Obligation.
(b)It is the intention of the Guarantor that its Guarantee not constitute a fraudulent transfer or conveyance for purposes of Bankruptcy Law, the Uniform Fraudulent Conveyance Act, the Uniform Fraudulent Transfer Act or any similar federal or state law to the extent applicable to its Guarantee. To effectuate the foregoing intention, the amount guaranteed by the Guarantor under its Guarantee shall be limited to the maximum amount as will, after giving effect to such maximum amount and all other contingent and fixed liabilities of the Guarantor that are relevant under such laws, result in the Guaranteed Obligations of the Guarantor under its Guarantee not constituting a fraudulent transfer or conveyance. For purposes hereof, “Bankruptcy Law” means Title 11 of the U.S. Code, or any similar federal or state law for the relief of debtors.
2.2Guarantee Absolute.
The Guarantor guarantees that the Guaranteed Obligations will be paid strictly in accordance with the terms of the Indenture, regardless of any law, regulation or order now or hereafter in effect in any jurisdiction affecting any of such terms or the rights of Holders of the Notes with respect thereto. The liability of the Guarantor under its Guarantee shall be absolute and unconditional irrespective of:
(i)    any lack of validity, enforceability or genuineness of any provision of the Indenture, the Notes or any other agreement or instrument relating thereto;



(ii)    any change in the time, manner or place of payment of, or in any other term of, any or all of the Guaranteed Obligations, or any other amendment or waiver of or any consent to departure from the Indenture;
(iii)    any release or amendment or waiver of or consent to departure from any other guarantee, for all or any of the Guaranteed Obligations;
(iv)    the absence of any action to enforce same, or any waiver or consent by any Holder with respect to any provisions of the Indenture; or
(v)    any other circumstance that might otherwise constitute a defense available to, or a discharge of, the Company or the Guarantor.
2.3Waiver; Subrogation.
(a)The Guarantor hereby waives promptness, diligence, presentment, demand of payment, notice of acceptance and any other notice with respect to its Guarantee and any requirement that the Trustee, or the Holders of any Notes exhaust any right or take any action against the Company or any other person.
(b)The Guarantor hereby irrevocably waives any claims or other rights that it may now or hereafter acquire against the Company that arise from the existence, payment, performance or enforcement of the Guarantor’s obligations under its Guarantee or the Indenture, including, without limitation, any right of subrogation, reimbursement, exoneration, contribution or indemnification and any right to participate in any claim or remedy of the Trustee, or the Holders of any Notes against the Company, whether or not such claim, remedy or right arises in equity or under contract, statute or common law, including, without limitation, the right to take or receive from the Company, directly or indirectly, in cash or other property or by set-off or in any other manner, payment or security on account of such claim, remedy or right. If any amount shall be paid to the Guarantor in violation of the preceding sentence at any time prior to the cash payment in full of the Guaranteed Obligations and all other amounts payable under its Guarantee, such amount shall be held in trust for the benefit of the Trustee and the Holders of any Notes and shall forthwith be paid to the Trustee, to be credited and applied to the Guaranteed Obligations and all other amounts payable under its Guarantee, whether matured or unmatured, in accordance with the terms of the Indenture and its Guarantee, or be held as collateral for any Guaranteed Obligations or other amounts payable under its Guarantee thereafter arising. The Guarantor acknowledges that it will receive direct and indirect benefits from the financing arrangements contemplated by the Indenture and its Guarantee and that the waiver set forth in this Section 2.3 is knowingly made in contemplation of such benefits.
2.4No Waiver; Remedies.
No failure on the part of the Trustee or any Holder of the Notes to exercise, and no delay in exercising, any right hereunder shall operate as a waiver thereof; nor shall any single or partial exercise of any right hereunder preclude any other or further exercise thereof or the exercise of any other right. The remedies herein provided are cumulative and not exclusive of any remedies provided by law.
2.5Continuing Guarantee; Transfer of Interest.



The Guarantee of the Guarantor is a continuing guarantee and shall (a) remain in full force and effect until payment in full of the Guaranteed Obligations or the Guaranteed Obligations shall have been deemed paid and discharged by defeasance or otherwise pursuant to the terms of the instruments governing the Guaranteed Obligations, (b) be binding upon the Guarantor, its successors and assigns, and (c) inure to the benefit of and be enforceable by any Holder of the Notes, the Trustee, and by their respective successors, transferees, and assigns.
The Guarantee of the Guarantor shall be automatically and unconditionally released and discharged:
(a)if the Guarantor shall consolidate with or merge into the Company; or
(b)if the Company shall consolidate with or merge into the Guarantor;
Each Holder hereby authorizes the Trustee to take all actions to effectuate any release in accordance with the provisions of this Section 2.5.

2.6Reinstatement.
The Guarantee of the Guarantor shall continue to be effective or be reinstated, as the case may be, if at any time any payment of any of the Guaranteed Obligations is rescinded or must otherwise be returned by any Holder of the Notes or the Trustee upon the insolvency, bankruptcy or reorganization of the Company or otherwise, all as though such payment had not been made.
ARTICLE III

MISCELLANEOUS PROVISIONS
3.1Effectiveness of this Supplemental Indenture. This Supplemental Indenture will become effective upon the occurrence of the Closing.
3.2Trustee Not Responsible for Recitals. The recitals herein contained are made by the Company and not by the Trustee, and the Trustee does not assume any responsibility for the correctness thereof. The Trustee does not make any representation as to the validity or sufficiency of this Supplemental Indenture or the Notes.
3.3Ratification and Incorporation of Original Indenture. As supplemented hereby, the Indenture is in all respects ratified and confirmed, and the Indenture and this Supplemental Indenture shall be read, taken and construed as one and the same instrument.
3.4Notices. All notices or other communications to the Guarantor shall be given as provided in Section 1.05 of the Indenture to the same address as the address specified for the Company.
3.5Governing Law. THIS SUPPLEMENTAL INDENTURE SHALL BE DEEMED TO BE A CONTRACT MADE UNDER THE INTERNAL LAWS OF THE STATE OF NEW YORK, AND FOR ALL PURPOSES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK. EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY



JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS SIXTH SUPPLEMENTAL INDENTURE, THE SENIOR NOTES OR THE TRANSACTIONS CONTEMPLATED HEREBY.
3.6Separability. In case any one or more of the provisions contained in this Supplemental Indenture or in the Notes shall for any reason be held to be invalid, illegal or unenforceable in any respect, such invalidity, illegality or unenforceability shall not affect any other provisions of this Supplemental Indenture or of the Notes, but this Supplemental Indenture and the Notes shall be construed as if such invalid or illegal or unenforceable provision had never been contained herein or therein.
3.7Executed in Counterparts. This Supplemental Indenture may be executed in any number of counterparts, each of which shall be an original; but such counterparts shall together constitute but one and the same instrument. The exchange of copies of this Supplemental Indenture and of signature pages by facsimile or PDF transmission shall constitute effective execution and delivery of this Supplemental Indenture as to the parties hereto and may be used in lieu of the original Supplemental Indenture for all purposes. Signatures of the parties hereto transmitted by facsimile or PDF, or by electronic signature (including those created or transmitted through a software platform or application), shall be deemed to be their original signatures for all purposes.



IN WITNESS WHEREOF, the parties hereto have caused this Seventh Supplemental Indenture to be duly executed by their respective officers thereunto duly authorized as of the date first above written.
ASPEN INSURANCE HOLDINGS LIMITED, as the issuer
By:    /s/ Carrie Rosorea    
Name: Carrie Rosorea
Title: Chief Financial Officer

SOMPO INTERNATIONAL HOLDINGS LTD., as Guarantor
By:    /s/ Nicolas Burnet    
Name: Nicolas Burnet
Title: Chief Financial Officer

DEUTSCHE BANK TRUST COMPANY AMERICAS, not in its individual capacity but solely in its capacity as Trustee
By:    /s/ Mary Miselis    
Name: Mary Miselis
Title: Vice President
By:    /s/ Carol Ng    
Name: Carol Ng
Title: Vice President

[Signature Page to Supplemental Indenture]

Exhibit 99.2
Unaudited Pro Forma Consolidated Financial Statements


This unaudited pro forma consolidated financial statements references as part of this Form 6-K, whereby Aspen Insurance Holdings Limited (the “Company) completed a series of transactions between entities under common control to simplify its corporate structure and facilitate the integration of its operations with those of the broader Sompo international organization. From the Company’s perspective, certain wholly-owned US and Bermuda subsidiaries, including Aspen American Insurance Company, Aspen Specialty Insurance Company and Aspen Bermuda Limited (“transferred subsidiaries”), were transferred to an unconsolidated affiliate, Endurance U.S. Holdings Corp., a Delaware corporation (“EUSH”). In connection with the transfer effective August 14, 2026, the Company received consideration of $2.722 billion which was formalized into loan notes due from a related party, an investment-grade credit. The appropriate notices and approvals with respect to the Bermuda Monetary Authority, the Texas Department of Insurance, and the North Dakota Insurance & Securities Department were completed prior to the consummation of these transactions.

The unaudited pro forma consolidated financial statements were derived from the Company’s historical consolidated financial statements for the year ended December 31, 2025 contained in the Company’s Annual Report on Form 20-F. The unaudited pro forma consolidated financial statements reconcile results as reported in these historical financial statements to pro forma results that give effect to the transfer of subsidiaries to EUSH, a significant business disposition for the Company. Pro forma adjustments for this transaction principally consider the impact of de-consolidating the transferred subsidiaries, the consideration received and formalized into the loans due from a related party, and interest related to the loans. The following unaudited pro forma condensed consolidated balance sheet as of December 31, 2025 is presented as if the transfer had occurred on December 31, 2025, and the unaudited pro forma condensed consolidated statement of operations for the year ended December 31, 2025 are presented as if the transaction occurred on January 1, 2025.

The unaudited pro forma consolidated financial statements have been prepared in accordance with Article 11 of Regulation S-X. They should be read in conjunction with; i) the accompanying notes to the unaudited pro forma consolidated financial statements contained herein; and ii) the historical audited December 31, 2025 consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 20-F filed on March 30, 2026.

The unaudited pro forma adjustments are based on available information and certain assumptions that we believe are reasonable as of the date of the Report on Form 6-K to which these unaudited pro forma consolidated financial statements are included. Assumptions underlying the pro forma adjustments related to the transferred subsidiaries are described in the accompanying notes. The pro forma adjustments reflected herein are based on management’s expectations regarding the transaction. The unaudited pro forma consolidated financial statements are presented for illustrative purposes only and do not purport to indicate the results of operations of future periods or the results of operations that actually would have been realized had the reorganization transactions closed during the period presented.

The unaudited pro forma consolidated financial statements, filed as Exhibit 99.2 to this Form 6-K, is incorporated by reference as part of this Form 6-K.


1


Unaudited Pro Forma Condensed Balance Sheet
As of December 31, 2025

 As ReportedPro Forma AdjustmentsNotesAIHL Pro Forma
($ in millions)
ASSETS
Total investments$6,568.6 $(4,688.1)$1,880.5 
Cash and cash equivalents1,658.8 (735.3)923.5 
Unpaid losses recoverable from reinsurers
4,281.9 (1,164.7)3,117.2 
Ceded unearned premiums968.6 (380.4)588.2 
Underwriting premiums receivable1,700.8 (883.2)817.6 
Deferred acquisition costs357.2 (239.1)118.1 
Derivative assets5.0 (3.6)1.4 
Right-of-use operating lease assets43.4 (31.3)12.1 
Income taxes refundable2.5 19.8 22.3 
Deferred tax assets342.5 (246.1)96.4 
Other assets360.4 (133.4)227.0 
Intangible assets and goodwill19.9 (14.5)5.4 
Notes due from related party— 2,722.0 (a)2,722.0 
Total assets$16,309.6 $(5,777.9)$10,531.7 
LIABILITIES
Reserves for losses and loss adjustment expenses$8,725.0 $(4,388.3)$4,336.7 
Unearned premiums2,725.8 (1,629.7)1,096.1 
Reinsurance premiums520.3 (343.4)176.9 
Income taxes payable18.7 (5.4)13.3 
Derivative tax liabilities4.0 — 4.0 
Accrued expenses and other payables317.1 (87.6)229.5 
Operating lease liabilities64.7 (52.7)12.0 
Derivative liabilities12.1 (0.4)11.7 
Long-term debt296.8 — 296.8 
Due to related parties— 201.6 201.6 
Funds held under reinsurance contracts— 585.0 585.0 
Total liabilities12,684.5 (5,720.9)6,963.6 
SHAREHOLDERS’ EQUITY
Ordinary shares$0.1 $— $0.1 
Preference shares699.9 — 699.9 
Additional paid-in capital803.4 (44.8)(b)758.6 
Retained earnings2,320.0 — 2,320.0 
Accumulated other comprehensive (loss)(198.3)(12.2)(210.5)
Total shareholders’ equity3,625.1 (57.0)3,568.1 
Total liabilities and shareholders’ equity$16,309.6 $(5,777.9)$10,531.7 

2


Unaudited Pro Forma Condensed Statement of Operations
December 31, 2025


 As ReportedPro Forma AdjustmentsNotesAIHL Pro Forma
($ in millions)
Revenues
Net earned premiums$2,831.9 $(2,112.8)$719.1 
Net investment income326.3 (236.7)89.6 
Interest income on related party notes— 133.7 (c)133.7 
Realized and unrealized investment gains61.4 (44.7)16.7 
Total revenues3,219.6 (2,260.5)959.1 
Expenses
Losses and loss adjustment expenses(1,546.7)1,156.3 (390.4)
Acquisition costs(422.4)393.5 (28.9)
General, administrative and corporate expenses(671.4)289.4 (382.0)
Interest expense(31.7)8.5 (23.2)
Change in fair value of derivatives47.5 (29.6)17.9 
Realized and unrealized investment losses(72.3)39.5 (32.8)
Realized and unrealized foreign exchange (losses)/gains(78.5)43.6 (34.9)
Total expenses(2,775.5)1,901.2 (874.3)
Income from operations before income taxes444.1 (359.3)84.8 
Income tax (expense)/benefit(103.9)85.8 (d)(18.1)
Net income$340.2 $(273.5)$66.7 
3


Notes to Unaudited Pro Forma Condensed Consolidated Financial Statements



1.    Basis of Pro Forma Presentation

The accompanying unaudited pro forma condensed consolidated financial statements of the Company were prepared in accordance with Article 11 of Regulation S-X and are based on the historical condensed consolidated financial information of the Company. The condensed consolidated financial information has been adjusted in the accompanying pro forma financial statements to give effect to the disposition of Aspen U.S. Holdings, Inc. and its wholly owned subsidiary companies including Aspen American Insurance Company, Aspen Specialty Insurance Company and Aspen Bermuda Limited. The transactions are between entities of the same ultimate parent and thus accounted for as a common control transaction with no gain or loss recorded and any difference in consideration and the book value of the entities recorded in equity through additional paid-in capital.


2.    Adjustments to the Pro Forma Condensed Financial Statements

Unless otherwise noted, the pro forma adjustments reflect the effects of the disposition of Aspen U.S. Holdings, Inc. and its wholly owned subsidiaries (together, “AUSH”), including (i) the removal of assets, liabilities, revenues and expenses directly attributable to AUSH; and (ii) the reinstatement of intercompany balances between AUSH and the remaining Aspen group entities that will no longer be eliminated in consolidation following the transaction. Other adjustments to the pro forma condensed consolidated balance sheet and pro forma condensed consolidated statements of operations are as follows:

(a)Adjustment reflects the consideration received from EUSH for the purchase of AUSH. Consideration was formalized in the form of four separate notes, each bearing interest and requiring monthly interest payments.
(b)Adjustment reflects the net equity impact of the transaction, representing the difference between the consideration received and the carrying value of the net assets transferred.
(c)Adjustment reflects the interest income on the notes issued as consideration for the purchase of AUSH.
(d)The tax effect of certain pro forma adjustments, including interest income per Note (c), was calculated using the applicable historical local statutory rates in effect for the period presented.



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