Arch Capital Group Ltd. (NASDAQ: ACGL; “Arch,” “our” or “the Company”) announces its 2025 fourth quarter results. The results included:

“Our 2025 financial performance was outstanding, once again demonstrating the value of our diversified platform and our ability to effectively execute our cycle management strategy. I want to thank each of our 8,000+ employees for making these fantastic results possible,” Arch CEO Nicolas Papadopoulo said. “We enter 2026 with optimism in our ability to continue delivering superior results for our shareholders.”

All earnings per share amounts discussed in this release are on a diluted basis. The following table summarizes the Company’s underwriting results:

The following table summarizes the Company’s consolidated financial data, including a reconciliation of net income or loss available to Arch common shareholders to after-tax operating income or loss available to Arch common shareholders and related diluted per share results (see ‘Comments on Non-GAAP Financial Measures’ for further details):

Segment Information

The following section provides analysis on the Company’s 2025 fourth quarter performance by reportable segments. For additional details regarding the Company’s reportable segments, please refer to the Company’s Financial Supplement dated December 31, 2025. On August 1, 2024, the insurance segment completed the acquisition of the U.S. MidCorp and Entertainment insurance businesses from Allianz (“MCE Acquisition”). The Company’s segment information includes the use of underwriting income (loss) and a combined ratio excluding catastrophic activity and prior year development (see ‘Comments on Non-GAAP Financial Measures’ for further details).

Insurance Segment

Gross premiums written by the insurance segment in the 2025 fourth quarter were 2.3% higher than in the 2024 fourth quarter, while net premiums written were 4.0% lower than in the 2024 fourth quarter. In North America, we grew our gross premiums written in long-tail lines such as other liability-occurrence, other liability-claims made, and commercial automobile, while gross premium volume decreased for property and short-tail specialty. Changes in net premiums written were impacted by the timing of ceded written premium accruals related to the MCE acquisition in the prior year quarter, and changes in business mix resulting from different levels of net-to-gross retention ratios. We grew our gross and our net premium volume in our International operations, as increases in casualty and other lines were partially offset by small reductions in property and short-tail specialty. Net premiums earned in the 2025 fourth quarter were 2.1% higher than in the 2024 fourth quarter and reflect changes in net premiums written over the previous five quarters.

The 2025 fourth quarter loss ratio reflected 3.3 points of current year catastrophic activity, compared to 8.3 points of catastrophic activity in the 2024 fourth quarter. Estimated net favorable development of prior year loss reserves, before related adjustments, reduced the loss ratio by 0.2 points in the 2025 fourth quarter, compared to 0.3 points in the 2024 fourth quarter.

The underwriting expense ratio was 33.4% in the 2025 fourth quarter, compared to 32.2% in the 2024 fourth quarter. In the 2024 fourth quarter, the impact of the MCE Acquisition lowered the underwriting expense ratio by approximately 290 basis points, primarily due to the effects of the fair value estimation of the assets acquired at closing, including the non-recognition of deferred acquisition costs.

Reinsurance Segment

Gross premiums written by the reinsurance segment in the 2025 fourth quarter were 0.2% higher than in the 2024 fourth quarter, while net premiums written were 5.2% lower than in the 2024 fourth quarter. We grew our gross premiums written in most lines of business, as a result of new business opportunities and share increases. The only exception was in other specialty, primarily due to the non-renewal of a large transaction. Changes in net premiums written this quarter followed a similar direction to gross premiums written, with the exception of property catastrophe that was impacted by a change in the timing of certain retrocession purchases. Net premiums earned in the 2025 fourth quarter were 4.6% higher than in the 2024 fourth quarter and reflect changes in net premiums written over the previous five quarters.

The 2025 fourth quarter loss ratio reflected 5.4 points of current year catastrophic activity, compared to 12.9 points of current year catastrophic activity in the 2024 fourth quarter. Estimated net favorable development of prior year loss reserves, before related adjustments, reduced the loss ratio by 3.5 points in the 2025 fourth quarter, compared to 3.8 points in the 2024 fourth quarter. The balance of the change in the loss ratio resulted, in part, from a higher level of attritional losses and changes in the mix of business.

The underwriting expense ratio was 22.5% in the 2025 fourth quarter, compared to 24.1% in the 2024 fourth quarter, with the decrease primarily reflecting a full year benefit of qualified refundable tax credits (“QRTCs”) under the recently enacted Bermuda Tax Credit Act 2025.

Mortgage Segment

Gross premiums written by the mortgage segment in the 2025 fourth quarter were 1.5% lower than in the 2024 fourth quarter, while net premiums written were 3.6% lower than in the 2024 fourth quarter. The reduction in net premiums written in the 2025 fourth quarter primarily reflected lower U.S. monthly premium volume.

Estimated net favorable development of prior year loss reserves, before related adjustments, decreased the loss ratio by 19.4 points, compared to 20.2 points in the 2024 fourth quarter. Such amounts were primarily related to better than expected cure rates.

The underwriting expense ratio was 14.5% in the 2025 fourth quarter, compared to 19.3% in the 2024 fourth quarter. The 2024 fourth quarter reflected a higher level of operating expenses related to a one-time voluntary separation program costs.

Corporate

The Company’s results include net investment income, net realized gains or losses (which includes realized and unrealized changes in the fair value of equity securities and assets accounted for using the fair value option, realized and unrealized gains and losses on derivative instruments, changes in the allowance for credit losses on financial assets and gains and losses realized from the acquisition or disposition of subsidiaries), equity in net income or loss of investments accounted for using the equity method, other income (loss), corporate benefit (expenses), transaction costs and other, amortization of intangible assets, interest expense, net foreign exchange gains or losses, income tax items, income or loss from operating affiliates and items related to the Company’s non-cumulative preferred shares.

Investment returns were as follows:

Net investment income for the 2025 fourth quarter primarily reflected growth in average invested assets, due in part to strong operating cash flows. Net realized gains were $22 million for the 2025 fourth quarter, compared to net realized loss of $161 million in the 2024 fourth quarter, and were primarily the result of financial market movements on the Company’s equity securities, investments accounted for under the fair value option method and derivatives.

Corporate expenses for the 2025 fourth quarter were a benefit of $50 million, compared to an expense of $31 million for the 2024 fourth quarter. Such expenses primarily represent certain holding company costs necessary to support our worldwide operations and costs associated with operating as a publicly traded company. The 2025 fourth quarter benefit reflected a full year impact of QRTCs.

Amortization of intangible assets was $47 million for the 2025 fourth quarter, compared to $99 million for the 2024 fourth quarter. Both periods reflected the amortization of intangible assets related to the MCE Acquisition, including intangible assets attributed to value of business acquired and distribution relationships.

On a pre-tax basis, net foreign exchange losses were $6 million for the 2025 fourth quarter, compared to net foreign exchange gains of $106 million for the 2024 fourth quarter. For both periods, such amounts were primarily unrealized and resulted from the effects of revaluing the Company’s net insurance liabilities required to be settled in foreign currencies at each balance sheet date. Changes in the value of available-for-sale investments held in foreign currencies due to foreign currency rate movements are reflected as a direct increase or decrease to shareholders’ equity and are not included in the consolidated statements of income.

The Company’s effective tax rate on income before income taxes was 14.5% for the 2025 fourth quarter, compared to 6.6% for the 2024 fourth quarter. The Company’s effective tax rate on pre-tax operating income available to Arch common shareholders was 15.4% for the 2025 fourth quarter, compared to 6.7% for the 2024 fourth quarter. The effective tax rate may fluctuate from period to period based upon the relative mix of income or loss reported by jurisdiction, the level of catastrophic loss activity incurred, and the varying tax rates in each jurisdiction. The higher rates for the 2025 fourth quarter primarily reflected the impact of Bermuda’s Corporate Income Tax Act 2023.

Income from operating affiliates for the 2025 fourth quarter was $61 million, or $0.17 per share, compared to $64 million, or $0.17 per share, for the 2024 fourth quarter, and primarily reflects amounts related to the Company’s investment in Somers Group Holdings Ltd. and Coface SA.

Conference Call

The Company will hold a conference call for investors and analysts at 10:00 a.m. Eastern Time on February 10, 2026. A live webcast of this call will be available via the Investors section of the Company’s website athttp://www.archgroup.com/investors

Please refer to the Company’s Financial Supplement dated December 31, 2025, which is available via the Investors section of the Company’s website athttp://www.archgroup.com/investors

Arch Capital Group Ltd., is a publicly listed Bermuda exempted company with approximately $26.9 billion in capital at December 31, 2025. Arch, which is part of the S&P 500 index, provides insurance, reinsurance and mortgage insurance on a worldwide basis through its wholly owned subsidiaries.

Comments on Non-GAAP Financial Measures

Throughout this release, the Company presents its operations in the way it believes will be the most meaningful and useful to investors, analysts, rating agencies and others who use the Company’s financial information in evaluating the performance of the Company and that investors and such other persons benefit from having a consistent basis for comparison between quarters and for comparison with other companies within the industry. These measures may not, however, be comparable to similarly titled measures used by companies outside of the insurance industry. Investors are cautioned not to place undue reliance on these non-GAAP financial measures in assessing the Company’s overall financial performance.

This presentation includes the use of “after-tax operating income or loss available to Arch common shareholders,” which is defined as net income available to Arch common shareholders, excluding net realized gains or losses (which includes realized and unrealized changes in the fair value of equity securities and assets accounted for using the fair value option, realized and unrealized gains and losses on derivative instruments, changes in the allowance for credit losses on financial assets and gains and losses realized from the acquisition or disposition of subsidiaries), equity in net income or loss of investments accounted for using the equity method, net foreign exchange gains or losses, transaction costs and other, net of income taxes and the use of annualized operating return on average common equity. The presentation of after-tax operating income available to Arch common shareholders and annualized operating return on average common equity are non-GAAP financial measures as defined in Regulation G. The reconciliation of such measures to net income available to Arch common shareholders and annualized net income return on average common equity (the most directly comparable GAAP financial measures) in accordance with Regulation G is included on page 2 of this release.

The Company believes that net realized gains or losses, equity in net income or loss of investments accounted for using the equity method, net foreign exchange gains or losses and transaction costs and other, in any particular period are not indicative of the performance of, or trends in, the Company’s business performance. Although net realized gains or losses, equity in net income or loss of investments accounted for using the equity method and net foreign exchange gains or losses are an integral part of the Company’s operations, the decision to realize these items are independent of the insurance underwriting process and result, in large part, from general economic and financial market conditions. Furthermore, certain users of the Company’s financial information believe that, for many companies, the timing of the realization of investment gains or losses is largely opportunistic. In addition, changes in the allowance for credit losses and net impairment losses recognized in earnings on the Company’s investments represent other-than-temporary declines in expected recovery values on securities without actual realization.

The use of the equity method on certain of the Company’s investments in certain funds that invest in fixed maturity securities is driven by the ownership structure of such funds (either limited partnerships or limited liability companies). In applying the equity method, these investments are initially recorded at cost and are subsequently adjusted based on the Company’s proportionate share of the net income or loss of the funds (which include changes in the fair value of the underlying securities in the funds). This method of accounting is different from the way the Company accounts for its other fixed maturity securities and the timing of the recognition of equity in net income or loss of investments accounted for using the equity method may differ from gains or losses in the future upon sale or maturity of such investments.

Transaction costs and other include integration, advisory, financing, legal, severance, incentive compensation and all other costs directly related to acquisitions. The Company believes that transaction costs and other, due to their non-recurring nature, are not indicative of the performance of, or trends in, the Company’s business performance.

The Company believes that showing net income available to Arch common shareholders exclusive of the items referred to above reflects the underlying fundamentals of the Company’s business since the Company evaluates the performance of and manages its business to produce an underwriting profit. In addition to presenting net income available to Arch common shareholders, the Company believes that this presentation enables investors and other users of the Company’s financial information to analyze the Company’s performance in a manner similar to how the Company’s management analyzes performance. The Company also believes that this measure follows industry practice and, therefore, allows the users of the Company’s financial information to compare the Company’s performance with its industry peer group. The Company believes that the equity analysts and certain rating agencies that follow the Company and the insurance industry as a whole generally exclude these items from their analyses for the same reasons.

The Company’s segment information includes the presentation of consolidated underwriting income or loss and a subtotal of underwriting income or loss. Such measures represent the pre-tax profitability of its underwriting operations and include net premiums earned plus other underwriting income, less losses and loss adjustment expenses, acquisition expenses and other operating expenses. Other operating expenses include those operating expenses that are incremental and/or directly attributable to the Company’s individual underwriting operations. Underwriting income or loss does not include certain income and expense items which are included in corporate. While these measures are presented in the Segment Information footnote to the Company’s Consolidated Financial Statements, they are considered non-GAAP financial measures when presented elsewhere on a consolidated basis. The reconciliations of underwriting income or loss to income before income taxes (the most directly comparable GAAP financial measure) on a consolidated basis, in accordance with Regulation G, is shown on the following pages.

Management measures segment performance for its three underwriting segments based on underwriting income or loss. The Company does not manage its assets by underwriting segment and, accordingly, investment income, income from operating affiliates and other items are not allocated to each underwriting segment.

In addition, the Company’s segment information includes the use of a combined ratio excluding catastrophic activity and prior year development, for the insurance and reinsurance segments, and a combined ratio excluding prior year development, for the mortgage segment. These ratios are non-GAAP financial measures as defined in Regulation G. The reconciliation of such measures to the combined ratio (the most directly comparable GAAP financial measure) in accordance with Regulation G are shown on the individual segment pages. The Company’s management utilizes the adjusted combined ratios excluding current accident year catastrophic events and favorable or adverse development in prior year loss reserves in its analysis of the underwriting performance of each of its underwriting segments. Effective in the 2025 first quarter, the ‘Other operating expense ratio’ includes ‘Other underwriting income.’

Total return on investments includes investment income, equity in net income or loss of investments accounted for using the equity method, net realized gains and losses (excluding changes in the allowance for credit losses on non-investment related financial assets) and the change in unrealized gains and losses generated by Arch’s investment portfolio. Total return is calculated on a pre-tax basis and before investment expenses and reflects the effect of financial market conditions along with foreign currency fluctuations. Management uses total return on investments as a key measure of the return generated to Arch common shareholders, and compares the return generated by the Company’s investment portfolio against benchmark returns during the periods presented.

The following tables summarize the Company’s results by segment for the 2025 fourth quarter and 2024 fourth quarter and a reconciliation of underwriting income or loss to income or loss before income taxes and net income or loss available to Arch common shareholders:

Cautionary Note Regarding Forward-Looking Statements

The Private Securities Litigation Reform Act of 1995 (“PSLRA”) provides a “safe harbor” for forward-looking statements. This release or any other written or oral statements made by or on behalf of the Company may include forward-looking statements, which reflect the Company’s current views with respect to future events and financial performance. All statements other than statements of historical fact included in or incorporated by reference in this release are forward-looking statements. Forward-looking statements, for purposes of the PSLRA or otherwise, can generally be identified by the use of forward-looking terminology such as “may,” “will,” “expect,” “intend,” “estimate,” “anticipate,” “believe” or “continue” and similar statements of a future or forward-looking nature or their negative or variations or similar terminology.

Forward-looking statements involve the Company’s current assessment of risks and uncertainties. Actual events and results may differ materially from those expressed or implied in these statements. Important factors that could cause actual events or results to differ materially from those indicated in such statements are discussed below and elsewhere in this release and in the Company’s periodic reports filed with the Securities and Exchange Commission (the “SEC”), and include:

All subsequent written and oral forward-looking statements attributable to the Company or persons acting on its behalf are expressly qualified in their entirety by these cautionary statements. The foregoing review of important factors should not be construed as exhaustive and should be read in conjunction with other cautionary statements that are included herein or elsewhere. The Company's forward-looking statements speak only as of the date of this press release or as of the date they are made, and the Company undertakes no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events or otherwise.

Source: Arch Capital Group Ltd.

arch-corporate

View source version on businesswire.com:https://www.businesswire.com/news/home/20260209627716/en/

(U.S. Dollars in millions)	Three Months Ended December 31,
		2025		2024	% Change
Gross premiums written	$	4,809	$	4,756	1.1
Net premiums written		3,649		3,819	(4.5)
Net premiums earned		4,255		4,143	2.7
Underwriting income		827		625	32.3
Underwriting Ratios					% Point
Loss ratio		53.6%		57.5%	(3.9)
Underwriting expense ratio⁽²⁾		27.0%		27.5%	(0.5)
Combined ratio		80.6%		85.0%	(4.4)

Combined ratio excluding catastrophic activity and prior year development⁽¹⁾		79.5%		79.0%	0.5

(1)		See ‘Comments on Non-GAAP Financial Measures’ for further details.

(2)		The ‘Underwriting expense ratio’ for the 2025 period includes ‘Other underwriting income.’ See ‘Comments on Non-GAAP Financial Measures’ for further details.

(U.S. Dollars in millions, except per share data)	Three Months Ended
	December 31,
		2025		2024
Net income available to Arch common shareholders	$	1,228	$	925
Net realized (gains) losses (1)		(22)		161
Equity in net (income) of investments accounted for using the equity method		(155)		(143)
Net foreign exchange (gains) losses		6		(106)
Transaction costs and other		26		26
Income tax expense (benefit) (2)		9		3
After-tax operating income available to Arch common shareholders	$	1,092	$	866

Diluted per common share results:
Net income available to Arch common shareholders	$	3.35	$	2.42
Net realized (gains) losses (1)		(0.06)		0.41
Equity in net (income) of investments accounted for using the equity method		(0.42)		(0.37)
Net foreign exchange (gains) losses		0.02		(0.28)
Transaction costs and other		0.07		0.07
Income tax expense (benefit) (2)		0.02		0.01
After-tax operating income available to Arch common shareholders	$	2.98	$	2.26

Weighted average common shares and common share equivalents outstanding — diluted		366.6		382.8

Beginning common shareholders’ equity	$	22,889	$	21,444
Ending common shareholders’ equity		23,376		19,990
Average common shareholders’ equity	$	23,133	$	20,717

Annualized net income return on average common equity		21.2%		17.9%
Annualized operating return on average common equity		18.9%		16.7%

(1)		Net realized gains or losses include realized and unrealized changes in the fair value of equity securities and assets accounted for using the fair value option, realized and unrealized gains and losses on derivative instruments, changes in the allowance for credit losses on financial assets and gains and losses realized from the acquisition or disposition of subsidiaries.

(2)		Income tax expense (benefit) on net realized gains or losses, equity in net income of investments accounted for using the equity method, net foreign exchange gains or losses and transaction costs and other reflects the relative mix reported by jurisdiction and the varying tax rates in each jurisdiction.

	Three Months Ended December 31,
(U.S. Dollars in millions)		2025		2024	% Change

Gross premiums written	$	2,542	$	2,484	2.3
Net premiums written		1,876		1,954	(4.0)
Net premiums earned		1,973		1,933	2.1
Other underwriting income		11		—	n/m

Underwriting income	$	119	$	30	296.7

Underwriting Ratios					% Point
Loss ratio		60.6%		66.3%	(5.7)
Underwriting expense ratio		33.4%		32.2%	1.2
Combined ratio		94.0%		98.5%	(4.5)

Catastrophic activity and prior year development:
Current accident year catastrophic events, net of reinsurance and reinstatement premiums		3.3%		8.3%	(5.0)
Net (favorable) adverse development in prior year loss reserves, net of related adjustments
Loss ratio impact		(0.2)%		(0.3)%	0.1
Underwriting expense ratio impact		0.1%		0.2%	(0.1)
Total impact		(0.1)%		(0.1)%	—

Combined ratio excluding catastrophic activity and prior year development		90.8%		90.3%	0.5

	Three Months Ended December 31,
(U.S. Dollars in millions)		2025		2024	% Change

Gross premiums written	$	1,944	$	1,941	0.2
Net premiums written		1,506		1,588	(5.2)
Net premiums earned		1,992		1,904	4.6
Other underwriting income		36		4	800.0

Underwriting income	$	458	$	328	39.6

Underwriting Ratios					% Point
Loss ratio		54.5%		58.9%	(4.4)
Underwriting expense ratio		22.5%		24.1%	(1.6)
Combined ratio		77.0%		83.0%	(6.0)

Catastrophic activity and prior year development:
Current accident year catastrophic events, net of reinsurance and reinstatement premiums		5.0%		12.2%	(7.2)
Net (favorable) adverse development in prior year loss reserves, net of related adjustments
Loss ratio impact		(3.5)%		(3.8)%	0.3
Underwriting expense ratio impact		0.6%		(0.2)%	0.8
Total impact		(2.9)%		(4.0)%	1.1

Combined ratio excluding catastrophic activity and prior year development		74.9%		74.8%	0.1

	Three Months Ended December 31,
(U.S. Dollars in millions)		2025		2024	% Change

Gross premiums written	$	326	$	331	(1.5)
Net premiums written		267		277	(3.6)
Net premiums earned		290		306	(5.2)
Other underwriting income		5		2	150.0

Underwriting income	$	250	$	267	(6.4)

Underwriting Ratios					% Point
Loss ratio		(0.8)%		(5.9)%	5.1
Underwriting expense ratio		14.5%		19.3%	(4.8)
Combined ratio		13.7%		13.4%	0.3

Prior year development:
Net (favorable) adverse development in prior year loss reserves, net of related adjustments
Loss ratio impact		(19.4)%		(20.2)%	0.8
Underwriting expense ratio impact		(0.9)%		(2.1)%	1.2
Total impact		(20.3)%		(22.3)%	2.0

Combined ratio excluding prior year development		34.0%		35.7%	(1.7)

(U.S. Dollars in millions, except per share data)	Three Months Ended
	December 31,		September 30,		December 31,
		2025		2025		2024
Pre-tax net investment income	$	434	$	408	$	405
Per share	$	1.18	$	1.08	$	1.06

Equity in net income of investments accounted for using the equity method	$	155	$	134	$	143
Per share	$	0.42	$	0.36	$	0.37

Pre-tax investment income yield, at amortized cost (1)		4.22%		4.07%		4.32%

Total return on investments (2)		1.36%		1.80%		(1.05)%

(1)		Presented on an annualized basis and excluding the impact of investments for which returns are not included within investment income, such as investments accounted for using the equity method and certain equities.

(2)		See ‘Comments on Non-GAAP Financial Measures’ for further details.

(U.S. Dollars in millions)	Three Months Ended
	December 31, 2025
	Insurance		Reinsurance		Mortgage		Total
Gross premiums written (1)	$	2,542	$	1,944	$	326	$	4,809
Premiums ceded (1)		(666)		(438)		(59)		(1,160)
Net premiums written		1,876		1,506		267		3,649
Change in unearned premiums		97		486		23		606
Net premiums earned		1,973		1,992		290		4,255
Other underwriting income (2)		11		36		5		52
Losses and loss adjustment expenses		(1,196)		(1,086)		2		(2,280)
Acquisition expenses		(380)		(393)		(6)		(779)
Other operating expenses		(289)		(91)		(41)		(421)
Underwriting income (loss)	$	119	$	458	$	250		827

Net investment income								434
Net realized gains (losses)								22
Equity in net income of investments accounted for using the equity method								155
Other income (loss)								16
Corporate benefit (expenses) (3)								50
Transaction costs and other (3)								(26)
Amortization of intangible assets								(47)
Interest expense								(38)
Net foreign exchange gains (losses)								(6)
Income (loss) before income taxes and income (loss) from operating affiliates								1,387
Income tax benefit (expense)								(210)
Income (loss) from operating affiliates								61
Net income (loss) available to Arch								1,238
Preferred dividends								(10)
Net income (loss) available to Arch common shareholders							$	1,228

Underwriting Ratios
Loss ratio		60.6%		54.5%		(0.8)%		53.6%
Acquisition expense ratio		19.3%		19.7%		1.9%		18.3%
Other operating expense ratio (4)		14.1%		2.8%		12.6%		8.7%
Combined ratio		94.0%		77.0%		13.7%		80.6%

Net premiums written to gross premiums written		73.8%		77.5%		81.9%		75.9%

(1)		Certain assumed and ceded amounts related to intersegment transactions are included in individual segment results. Accordingly, the sum of such transactions for each segment does not agree to the total due to eliminations.

(2)		‘Other underwriting income’ includes revenue earned from underwriting-related activities covered under existing service contracts.

(3)		Certain expenses have been excluded from ‘Corporate benefit (expenses)’ and reflected in ‘Transaction costs and other.’ See ‘Comments on Non-GAAP Financial Measures’ for a further discussion of such items.

(4)		The ‘Other operating expense ratio’ for the 2025 period includes ‘Other underwriting income.’

(U.S. Dollars in millions)	Three Months Ended
	December 31, 2024
	Insurance		Reinsurance		Mortgage		Total
Gross premiums written (1)	$	2,484	$	1,941	$	331	$	4,756
Premiums ceded (1)		(530)		(353)		(54)		(937)
Net premiums written		1,954		1,588		277		3,819
Change in unearned premiums		(21)		316		29		324
Net premiums earned		1,933		1,904		306		4,143
Other underwriting income		—		4		2		6
Losses and loss adjustment expenses		(1,281)		(1,121)		18		(2,384)
Acquisition expenses		(345)		(382)		(3)		(730)
Other operating expenses		(277)		(77)		(56)		(410)
Underwriting income (loss)	$	30	$	328	$	267		625

Net investment income								405
Net realized gains (losses)								(161)
Equity in net income of investments accounted for using the equity method								143
Other income (loss)								12
Corporate benefit (expenses) (2)								(31)
Transaction costs and other (2)								(26)
Amortization of intangible assets								(99)
Interest expense								(37)
Net foreign exchange gains (losses)								106
Income (loss) before income taxes and income (loss) from operating affiliates								937
Income tax benefit (expense)								(66)
Income (loss) from operating affiliates								64
Net income (loss) available to Arch								935
Preferred dividends								(10)
Net income (loss) available to Arch common shareholders							$	925

Underwriting Ratios
Loss ratio		66.3%		58.9%		(5.9)%		57.5%
Acquisition expense ratio		17.9%		20.0%		1.0%		17.6%
Other operating expense ratio		14.3%		4.1%		18.3%		9.9%
Combined ratio		98.5%		83.0%		13.4%		85.0%

Net premiums written to gross premiums written		78.7%		81.8%		83.7%		80.3%

(1)		Certain assumed and ceded amounts related to intersegment transactions are included in individual segment results. Accordingly, the sum of such transactions for each segment does not agree to the total due to eliminations.

(2)		Certain expenses have been excluded from ‘Corporate benefit (expenses)’ and reflected in ‘Transaction costs and other.’ See ‘Comments on Non-GAAP Financial Measures’ for a further discussion of such items.

Net income available to Arch common shareholders of $1.2 billion, or $3.35 per share, representing a 21.2% annualized net income return on average common equity, compared to net income available to Arch common shareholders of $925 million, or $2.42 per share, for the 2024 fourth quarter.
After-tax operating income available to Arch common shareholders

⁽¹⁾⁽¹⁾
Pre-tax current accident year catastrophic losses for the Company’s insurance and reinsurance segments, net of reinsurance and reinstatement premiums, of $164 million.
Favorable development in prior year loss reserves, net of related adjustments, of $118 million.
Combined ratio excluding catastrophic activity and prior year development

⁽¹⁾
Share repurchases of $798 million.
Book value per common share of $65.11 at December 31, 2025, a 4.5% increase from September 30, 2025.

the Company’s ability to successfully implement its business strategy during “soft” as well as “hard” markets;
acceptance of the Company’s business strategy, security and financial condition by rating agencies and regulators, as well as by brokers and its insureds and reinsureds;
the Company’s ability to consummate acquisitions and integrate any businesses it has acquired or may acquire into its existing operations;
the Company’s ability to maintain or improve its ratings, which may be affected by its ability to raise additional equity or debt financings, by ratings agencies’ existing or new policies and practices, as well as other factors described herein;
general economic and market conditions (including inflation, interest rates, unemployment, housing prices, foreign currency exchange rates, prevailing credit terms, tariffs, geopolitical instability and conflict and the depth and duration of a recession) and conditions specific to the reinsurance and insurance markets in which the Company operates;
competition, including increased competition, on the basis of pricing, capacity (including alternative sources of capital), coverage terms or other factors;
developments in the world’s financial and capital markets and the Company’s access to such markets;
the Company’s ability to successfully enhance, integrate and maintain operating procedures (including information technology) to effectively support its current and new business;
the loss and addition of key personnel;
material differences between actual and expected assessments for guaranty funds and mandatory pooling arrangements;
accuracy of those estimates and judgments utilized in the preparation of the Company’s financial statements, including those related to revenue recognition, insurance and other reserves, reinsurance recoverables, investment valuations, intangible assets, bad debts, income taxes, deferred tax assets, contingencies and litigation, and any determination to use the deposit method of accounting;
greater than expected loss ratios on business written by the Company and adverse development on claim and/or claim expense liabilities related to business written by its insurance and reinsurance subsidiaries;
the adequacy of the Company’s loss reserves;
severity and/or frequency of losses;
greater frequency or severity of unpredictable natural and man-made catastrophic events;
claims for natural catastrophic events or severe economic events in the Company’s insurance, reinsurance and mortgage businesses could cause large losses and substantial volatility in the Company’s results of operations;
availability to the Company of reinsurance to manage our net exposures and the cost of such reinsurance;
the failure of reinsurers, managing general agents, third party administrators or others to meet their obligations to the Company;
the timing of loss payments being faster or the receipt of reinsurance recoverables being slower than anticipated by the Company;
the Company’s investment performance, including legislative or regulatory developments that may adversely affect the fair value of the Company’s investments;
changes in general economic conditions, resulting in downgrades of U.S. securities or sovereign debt by credit rating agencies, which could affect the Company’s business, financial condition and results of operations;
an incident, disruption in operations or other cyber event caused by cyber attacks, the use of artificial intelligence technologies or other technology on the Company’s systems or those of the Company’s business partners and service providers, which could negatively impact the Company’s business and/or expose the Company to litigation;
the effect of climate change on the Company’s business;
the effect of contagious diseases or a pandemic on the Company’s business;
acts of terrorism, political unrest and other hostilities or other unforecasted and unpredictable events caused by humans;
the volatility of the Company’s shareholders’ equity from foreign currency fluctuations, which could increase due to us not matching portions of the Company’s projected liabilities in foreign currencies with investments in the same currencies;
changes in accounting principles or policies or in the Company’s application of such accounting principles or policies;
changes in the political environment of certain countries in which the Company operate or underwrite business;
statutory or regulatory developments, including as to tax matters and insurance and other regulatory matters such as the adoption of legislation that affects Bermuda-headquartered companies and/or Bermuda-based insurers or reinsurers and/or changes in regulations or tax laws applicable to the Company, its subsidiaries, brokers or customers, including the implementation of the Organization for Economic Cooperation and Development (“OECD”) Pillar I and Pillar II initiative and the enactment of the Bermuda corporate income tax; and
the other matters set forth under Item 1A “Risk Factors”, Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and other sections of the Company’s Annual Report on Form 10-K for the year ended December 31, 2024, filed with the SEC on February 27, 2025 and of the Company’s latest Quarterly Reports on Form 10-Q, as well as the other factors set forth in the Company’s other documents on file with the SEC, and management’s response to any of the aforementioned factors.