HANOVER INSURANCE GROUP INC

NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

1. Basis of Presentation and Principles of Consolidation

The accompanying unaudited consolidated financial statements of The Hanover Insurance Group, Inc. and its subsidiaries (“THG” or the “Company”) have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) for interim financial information and with the requirements of Form 10-Q. Certain financial information that is provided in annual financial statements, but is not required in interim reports, has been omitted.

The interim consolidated financial statements of THG include the accounts of The Hanover Insurance Company and Citizens Insurance Company of America, THG’s principal property and casualty companies, and other insurance and non-insurance subsidiaries. These legal entities conduct their operations through several business segments discussed in Note 8 – “Segment Information.” All intercompany accounts and transactions have been eliminated.

The preparation of financial statements in conformity with U.S. GAAP requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amount of revenues and expenses during the reporting period. Actual results could differ from those estimates.

In the opinion of the Company’s management, the accompanying interim consolidated financial statements reflect all adjustments, consisting of normal recurring items, necessary for a fair presentation of the financial position and results of operations. The results of operations for the nine months ended September 30, 2024 are not necessarily indicative of the results to be expected for the full year. These financial statements should be read in conjunction with the Company’s 2023 Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on February 22, 2024.

2. New Accounting Pronouncements

Recently Issued Standards

In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Codification (“ASC”) Update No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This Update requires entities to disclose an annual tabular rate reconciliation, using both percentages and currency amounts, broken out into specific categories, to the extent those items exceed a specified threshold. In addition, all entities are required to disclose annual income taxes paid, net of refunds received, disaggregated by federal, state, and foreign jurisdictions, and for individual jurisdictions when the amount is at least five percent of total income tax payments, net of refunds received. This Update is effective for annual reporting periods beginning after December 15, 2024, with early adoption permitted. This guidance may be implemented either on a prospective or retrospective basis. The Company does not expect implementation of this guidance to have a material effect on its financial position or results of operations, as the Update is disclosure related.

In November 2023, the FASB issued ASC Update No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This Update requires entities to disclose significant segment expenses and other segment items on an annual and interim basis, and to provide in interim periods all disclosures about a reportable segment’s profit or loss and assets that are currently required annually. Additionally, it requires entities to disclose the title and position of the Chief Operating Decision Maker (“CODM”), and an explanation of how the CODM uses the reported measures of segment profit or loss. The Update does not change how entities identify operating segments, aggregate them, or apply the quantitative thresholds to determine reportable segments. This Update is effective for annual reporting periods beginning after December 15, 2023, and interim reporting periods beginning after December 15, 2024, with early adoption permitted. The guidance should be applied retrospectively to all prior periods presented in the financial statements. The Company does not expect implementation of this guidance to have a material effect on its financial position or results of operations, as the Update is disclosure related.

3. Investments

A. Fixed maturities

The amortized cost and fair value of available-for-sale fixed maturities were as follows:

The Company deposits funds with various state and governmental authorities. For a discussion of the Company’s deposits with state and governmental authorities, see also Note 2 – “Investments” in the Notes to Consolidated Financial Statements in the Company’s 2023 Annual Report on Form 10-K.

The amortized cost and fair value by maturity periods for fixed maturities are shown in the following table. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties, or the Company may have the right to put or sell the obligations back to the issuers.

B. Fixed maturity securities in an unrealized loss position

The following tables provide information about the Company’s available-for-sale fixed maturity securities that were in an unrealized loss position at September 30, 2024 and December 31, 2023, including the length of time the securities have been in an unrealized loss position:

The Company views gross unrealized losses on fixed maturities as non-credit related and through its assessment of unrealized losses has determined that these securities will recover, allowing the Company to realize the anticipated long-term economic value. The Company currently does not intend to sell, nor does it expect to be required to sell these securities before recovery of their amortized cost. The Company employs a systematic methodology to evaluate declines in fair value below amortized cost for fixed maturity securities. In determining impairments, the Company evaluates several factors and circumstances, including the issuer’s overall financial condition; the issuer’s credit and financial strength ratings; the issuer’s financial performance, including earnings trends and asset quality; any specific events which may influence the operations of the issuer; the general outlook for market conditions in the industry or geographic region in which the issuer operates; and the degree to which the fair value of an issuer’s securities is below the Company’s amortized cost. The Company also considers any factors that might raise doubt about the issuer’s ability to make contractual payments as they come due and whether the Company expects to recover the entire amortized cost basis of the security.

C. Proceeds from sales

The proceeds from sales of available-for-sale fixed maturities and gross realized gains and gross realized losses on those sales were as follows:

D. Impairments (Recoveries)

For the three months ended September 30, 2024, the Company recognized net impairment losses of $0.6 million, consisting of $0.4 million on mortgage loans and $0.2 million on fixed maturities. For the nine months ended September 30, 2024, the Company recognized net impairment losses of $5.5 million, consisting of $4.0 million on mortgage loans and $1.5 million on fixed maturities. For thethree months ended September 30, 2023, impairments were not material. For the nine months ended September 30, 2023, the Company recognized net impairments of $16.5 million, consisting primarily of losses on intent to sell fixed maturities of $10.3 million and $5.4 million of estimated credit losses on mortgage loans.

At September 30, 2024 and December 31, 2023, the allowance for credit losses on mortgage loans was $7.5 million and $10.0 million respectively, and the allowance for credit losses on available-for-sale debt securities was $0.6 million and $1.9 million, respectively.

The following table provides a rollforward of the allowance for credit losses on mortgage loans:

The methodology and significant inputs used to measure the amount of credit losses were as follows:

Mortgage loans – the Company estimated losses by applying expected loss rates, which are based on historical data. Embedded in expected loss rates are mortgage risk ratings and risk factors associated with property type such as office, retail, lodging, multi-family and industrial. Risk ratings, based on property characteristics and metrics including the geographic market, are predominantly driven by estimates of loan-to-value and debt service coverage ratios. Ratings may be adjusted to reflect current conditions and to incorporate reasonable and supportable forecasts, such as volatility of cash flows and valuation.

Fixed maturities, Corporate bonds – the Company utilized a financial model that derives expected cash flows based on probability-of-default factors by credit rating and asset duration, and loss-given-default factors based on security type. These factors are based on historical data provided by an independent third-party rating agency. In addition, other qualitative market data relevant to the realizability of contractual cash flows may be considered, including current conditions and reasonable and supportable forecasts.

E. Equity securities

The following table provides pre-tax net unrealized gains (losses) on equity securities. There were no realized gains or losses from sales of equities for the three or nine months ended September 30, 2024.

4. Fair Value

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability, i.e., exit price, in an orderly transaction between market participants. The Company emphasizes the use of observable market data whenever available in determining fair value. Fair values presented for certain financial instruments are estimates which, in many cases, may differ significantly from the amounts that could be realized upon immediate liquidation. A hierarchy of the three broad levels of fair value is as follows, with the highest priority given to Level 1 as these are the most observable, and the lowest priority given to Level 3:

Level 1 – Unadjusted quoted prices in active markets for identical assets or liabilities.

Level 2 – Quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data, including model-derived valuations.

Level 3 – Unobservable inputs that are supported by little or no market activity.

When more than one level of input is used to determine fair value, the financial instrument is classified as Level 2 or Level 3 according to the lowest level input that has a significant impact on the fair value measurement.

The following methods and assumptions were used to estimate the fair value of each class of financial instruments and have not changed since last year.

Fixed Maturities

Level 1 securities generally include U.S. Treasury issues and other securities that are highly liquid, and for which quoted market prices are available. Level 2 securities are valued using pricing for similar securities and pricing models that incorporate observable inputs including, but not limited to, yield curves and issuer spreads. Level 3 securities include issues for which little observable data can be obtained, primarily due to the illiquid nature of the securities, and for which significant inputs used to determine fair value are based on the Company’s own assumptions.

The Company utilizes third-party pricing services for the valuation of the majority of its fixed maturity securities and receives one quote per security. When quoted market prices in an active market are available, they are provided by the pricing service as the fair value and such values are classified as Level 1. Since fixed maturities other than U.S. Treasury securities generally do not trade on a daily basis, the pricing services prepare estimates of fair value for those securities using pricing techniques based on a market approach. Inputs into the fair value pricing common to all asset classes include: benchmark U.S. Treasury security yield curves; reported trades of identical or similar fixed maturity securities; broker/dealer quotes of identical or similar fixed maturity securities and structural characteristics such as maturity date, coupon, mandatory principal payment dates, frequency of interest and principal payments, and optional redemption features. Inputs into the fair value applications that are unique by asset class include, but are not limited to:

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U.S. government agencies – determination of direct versus indirect government support and whether any contingencies exist with respect to the timely payment of principal and interest.

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Foreign governments – estimates of appropriate market spread versus underlying related sovereign treasury curve(s) dependent on liquidity and direct or contingent support.

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Municipals – overall credit quality, including assessments of the level and variability of: sources of payment such as income, sales or property taxes, levies or user fees; credit support such as insurance; state or local economic and political base; natural resource availability; and susceptibility to natural or man-made catastrophic events such as hurricanes, earthquakes or acts of terrorism.

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Corporate fixed maturities – overall credit quality, including assessments of the level and variability of: economic sensitivity; liquidity; corporate financial policies; management quality; regulatory environment; competitive position; ownership; restrictive covenants; and security or collateral.

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Residential mortgage-backed securities – estimates of prepayment speeds based upon: historical prepayment rate trends; underlying collateral interest rates; geographic concentration; vintage year; borrower credit quality characteristics; interest rate and yield curve forecasts; government or monetary authority support programs; tax policies; and delinquency/default trends; and in the case of non-agency collateralized mortgage obligations, severity of loss upon default and length of time to recover proceeds following default.

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Commercial mortgage-backed securities – overall credit quality, including assessments of the value and supply/demand characteristics of: collateral type such as office, retail, residential, lodging, or other; geographic concentration by region, state, metropolitan statistical area and locale; vintage year; historical collateral performance including defeasance, delinquency, default and special servicer trends; and capital structure support features.

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Other asset-backed securities – overall credit quality, including assessments of the underlying collateral type such as corporate loans, credit card receivables, automobile loan receivables and equipment lease receivables; geographic diversification; vintage year; historical collateral performance including delinquency, default and casualty trends; economic conditions influencing use rates and resale values; and contract structural support features.

Generally, all prices provided by the pricing services, except actively traded securities with quoted market prices, are reported as Level 2.

The Company holds privately placed fixed maturity securities and certain other fixed maturity securities that do not have an active market and for which the pricing services cannot provide fair values. The Company determines fair values for these securities using either matrix pricing, which utilizes the market approach, or broker quotes. The Company will use observable market data as inputs into the fair value techniques, as discussed in the determination of Level 2 fair values, to the extent it is available, but is also required to use a certain amount of unobservable judgment due to the illiquid nature of the securities involved. Unobservable judgment reflected in the Company’s matrix model accounts for estimates of additional spread required by market participants for factors such as issue size, credit stress, structural complexity, high bond coupon, or other unique features. These matrix-priced securities are reported as Level 2 or Level 3, depending on the significance of the impact of unobservable judgment on the security’s value. Additionally, the Company may obtain non-binding broker quotes, which are reported as Level 3.

Equity Securities

Level 1 consists of publicly traded securities, including exchange-traded funds, valued at quoted market prices. Level 2 includes securities that are valued using pricing for similar securities and pricing models that incorporate observable inputs. Level 3 consists of common or preferred stock of private companies for which observable inputs are not available.

The Company utilizes a third-party pricing service for the valuation of the majority of its equity securities and receives one quote for each equity security. When quoted market prices in an active market are available, they are provided by the pricing service as the fair value and such values are classified as Level 1. The Company holds certain equity securities that have been issued by privately-held entities that do not have an active market and for which the pricing service cannot provide fair values. The Company estimates fair value for these securities based on prices from recent financing rounds, which may be adjusted for liquidity and other factors, or based on the issuer’s book value and market multiples, and reports them as Level 3. Additionally, the Company may obtain non-binding broker quotes, which are reported as Level 3.

Other Investments

Other investments primarily include limited partnerships not subject to the equity method of accounting and mortgage participations. The fair values of limited partnerships not subject to the equity method of accounting are based on the net asset value (“NAV”) provided by the general partner, adjusted for recent financial information, and are excluded from the fair value hierarchy.

The estimated fair values of the financial instruments were as follows:

The Company has processes designed to ensure that the values received from its third-party pricing services are accurately recorded, that the data inputs and valuation approaches and techniques utilized are appropriate and consistently applied, and that the assumptions are reasonable and consistent with the objective of determining fair value. The Company reviews the pricing services’ policies describing its methodology, processes, practices and inputs, including various financial models used to value securities. For assets carried at fair value, the Company performs a review of the fair value hierarchy classifications and of prices received from its pricing services on a quarterly basis. Also, the Company reviews the portfolio pricing, including a process for which securities with changes in prices that exceed a defined threshold are verified to independent sources, if available. If upon review, the Company is not satisfied with the validity of a given price, a pricing challenge would be submitted to the applicable pricing service along with supporting documentation for its review. The Company does not adjust quotes or prices obtained from the pricing services unless the pricing service agrees with the Company’s challenge. During the first nine months of 2024 and 2023, the Company did not adjust any prices received from its pricing services.

Changes in the observability of valuation inputs may result in a reclassification of certain financial assets or liabilities within the fair value hierarchy. As previously discussed, the Company utilizes third party pricing services for the valuation of the majority of its fixed maturities and equity securities. The pricing services have indicated that they will only produce an estimate of fair value if there is objectively verifiable information to produce a valuation. If a pricing service discontinues pricing an investment, the Company will use observable market data to the extent it is available, but may also be required to make assumptions for market-based inputs that are unavailable due to market conditions.

The following tables provide, for each hierarchy level, the Company’s investment assets that were measured at fair value on a recurring basis.

Limited partnerships measured at fair value using the NAV based on an ownership interest in partners’ capital have not been included in the hierarchy tables. At September 30, 2024 and December 31, 2023, the fair values of these investments were $97.4 million and $114.6 million, respectively, approximately 1% of total investment assets.

The following tables provide, for each hierarchy level, the Company’s estimated fair values of financial instruments that were not carried at fair value:

The following tables provide a reconciliation for all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3).

There wereno transfers between Level 2 and Level 3 for the three months ended September 30, 2024 and 2023. During the nine months ended September 30, 2024, a fixed maturity security was transferred from Level 3 to Level 2 because it was valued by a pricing service with observable inputs rather than being valued by the Company’s internal matrix model. There wereno transfers between Level 2 and Level 3 for the nine months ended September 30, 2023. The Company heldno Level 3 liabilities for thenine months ended September 30, 2024 and 2023.

The following table provides quantitative information about the significant unobservable inputs used by the Company in the fair value measurements of Level 3 assets.

Theweighted average of the unobservable inputs was weighted by the relative fair value of the securities to which the inputs were applied. Each unobservable input is based on the Company’s subjective opinion and therefore inherently contains a degree of uncertainty. Where discounted cash flows were used in the valuation of fixed maturities, the internally-developed discount rate was adjusted by the significant unobservable inputs shown in the table. Increases (decreases) in any of these inputs in isolation would result in a lower (higher) fair value measurement. Increases (decreases) in unobservable inputs used in the valuation of equity securities would result in a higher (lower) fair value measurement. There were no interrelationships between these inputs which might magnify or mitigate the effect of changes in unobservable inputs on the fair value measurement.

5. Income Taxes

Income tax expense (benefit) for the nine months ended September 30, 2024 and 2023 has been computed using estimated annual effective tax rates. These rates are revised, if necessary, at the end of each successive interim period to reflect current estimates of the annual effective tax rates.

The tax provision was comprised of a U.S. federal income tax expense of $68.3 million and a benefit of $35.3 million for thenine months ended September 30, 2024 and 2023, respectively.

The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction and various state jurisdictions, and have previously filed in foreign jurisdictions. The Company and its subsidiaries are subject to U.S. federal and state income tax examinations and foreign examinations for years after 2019.

6. Pension Plans

The components of net periodic pension cost for thedefined benefit pension plans included in the Company’s results of operations are as follows:

7. Other Comprehensive Income (Loss)

The following tables provide changes in other comprehensive income (loss).

Reclassifications out of accumulated other comprehensive loss were as follows:

(1)

The amount reclassified from accumulated other comprehensive loss for the pension and postretirement benefits was allocated approximately 40% to loss adjustment expenses and 60% to other operating expenses for the three andnine months ended September 30, 2024 and 2023.

8. Segment Information

The Company’s primary business operations include insurance products and services provided through four reporting segments: Core Commercial, Specialty, Personal Lines and Other. Core Commercial includes commercial multiple peril, commercial automobile, workers’ compensation, and other commercial coverages provided to small and mid-sized businesses. Specialty includes four divisions of business: Professional and Executive Lines, Specialty Property and Casualty (“Specialty P&C”), Marine, and Surety and Other. Specialty P&C includes coverages such as program business, which provides commercial insurance to markets with specialized coverage or risk management needs related to groups of similar businesses, specialty industrial and commercial property, excess and surplus lines and specialty general liability coverage. Personal Lines includes personal automobile, homeowners and other personal coverages. The Other segment includes earnings on holding company assets; holding company and other expenses, including certain costs associated with retirement benefits due to the Company’s former life insurance employees and agents; run-off voluntary assumed property and casualty pools and run-off direct asbestos and environmental, and product liability businesses. Also included in the Other segment during the first half of 2024 and prior were the operations of Opus Investment Management, Inc. (“Opus”), which provided investment management services to THG, as well as institutions, pension funds, and other organizations. During the second and third quarters of 2024, the Company exited all of Opus’ business operations serving unaffiliated entities. Investment management services provided by Opus to THG related to its investment-grade fixed maturities portfolio were also transferred to an external manager during the second quarter of 2024. The separate financial information is presented consistent with the way results are regularly evaluated by the CODM in deciding how to allocate resources and in assessing performance.

The Company reports interest expense related to debt separately from the earnings of its reporting segments. This consists primarily of interest on the Company’s senior and subordinated debentures.

Management evaluates the results of its segments based on operating income (loss) before interest expense and income taxes. Operating income (loss) before interest expense and income taxes excludes certain items which are included in net income (loss), such as net realized and unrealized investment gains and losses. Such gains and losses are excluded since they are determined by interest rates, financial markets and the timing of sales. Also, operating income (loss) before interest expense and income taxes excludes net gains and losses on disposals of businesses, gains and losses related to the repayment of debt, discontinued operations, costs to acquire businesses, restructuring costs, the cumulative effect of accounting changes and certain other items. Although the items excluded from operating income (loss) before interest expense and income taxes may be important components in understanding and assessing the Company’s overall financial performance, management believes that the presentation of operating income (loss) before interest expense and income taxes enhances an investor’s understanding of the Company’s results of operations by highlighting net income (loss) attributable to the core operations of the business. However, operating income (loss) before income taxes should not be construed as a substitute for income (loss) before income taxes or income (loss) from continuing operations and operating income (loss) should not be construed as a substitute for net income (loss).

Summarized below is financial information with respect to the Company’s reporting segments.

The following table provides identifiable assets for the Company’s segments and discontinued operations:

The Company reviews the assets of its insurance subsidiaries collectively and does not allocate them among the Core Commercial, Specialty, Personal Lines and Other segments.

9. Stock-based Compensation

As of September 30, 2024, there were 2,356,776 and 1,229,903 shares available for grant under The Hanover Insurance Group 2022 Long-Term Incentive Plan and 2023 Employee Stock Purchase plan, respectively.

Compensation cost for the Company’s stock-based awards and the related tax benefits were as follows:

Stock Options

Information on the Company’s stock option activity for thenine months ended September 30, 2024 and 2023 is summarized below.

Restricted Stock Units

The Company currently issues time-based, market-based and performance-based restricted stock units to eligible employees, all of which generally vest after three years of continued employment.

The following table summarizes activity information about employee restricted stock units:

In the first nine months of 2024 and 2023, the Company granted market-based awards totaling 25,414 shares and 21,789 shares, respectively, to certain members of senior management, which are included in the table above as performance and market-based restricted stock activity. The vesting of these stock units is based on the relative total shareholder return (“TSR”) of the Company. This metric is generally based on relative TSR for athree-year period as compared to a pre-selected group of property and casualty companies. The fair value of market-based awards was estimated at the date of grant using a valuation model. These units have the potential to range from 0% to 150% of the shares disclosed. Included in the amount forfeited above in 2024 and 2023 are 6,339 shares and 2,836 shares, respectively, related to market-based awards that achieved a payout below 100%. These awards were forfeited in the first quarter of 2024 and 2023, respectively.

The Company also granted performance-based restricted stock units in 2024 and 2023, totaling 27,922 shares and 28,326 shares, respectively, which are based upon the Company’s achievement of return on equity objectives. These units have the potential to range from 0% to 150% of the shares disclosed. Increases above the 100% target level are reflected as granted in the period after which performance-based stock unit goals are achieved. Decreases below the 100% target level are reflected as forfeited. Included in the amounts granted above in 2024 and 2023 are 2,615 shares and 5,961 shares, respectively, related to performance-based awards that achieved a payout in excess of 100%. These awards vested in the first quarter of 2024 and 2023, respectively.

10. Earnings Per Share and Shareholders’ Equity Transactions

The following table provides weighted average share information used in the calculation of the Company’s basic and diluted earnings per share:

Diluted earnings per share for both the three and nine months ended September 30, 2024 excludes 0.4 million shares of common stock issuable under the Company’s stock compensation plans, because their effect would be antidilutive. Diluted earnings per share for the three and nine months ended September 30, 2023 excludes 0.7 million and 0.6 million, respectively, shares of common stock issuable under the Company’s stock compensation plans, because their effect would be antidilutive.

The Board of Directors authorized a stock repurchase program which provides for aggregate repurchases of the Company’s common stock of up to $1.3 billion. Under this program, the Company had approximately $330 million available at September 30, 2024. Under the repurchase authorization, the Company may repurchase, from time to time, common stock in amounts, at prices and at such times as the Company deems appropriate, subject to market conditions and other considerations. Repurchases may be executed using open market purchases, privately negotiated transactions, accelerated repurchase programs or other transactions. The Company is not required to purchase any specific number of shares or to make purchases by any certain date under this program.

11. Liabilities for Outstanding Claims, Losses and Loss Adjustment Expenses

Reserve Rollforward and Prior Year Development

The Company regularly updates its reserve estimates as new information becomes available and further events occur which may impact the resolution of unsettled claims. Reserve adjustments are reflected in results of operations as adjustments to losses and loss adjustment expenses (“LAE”). Often these adjustments are recognized in periods subsequent to the period in which the underlying policy was written and loss event occurred. These types of subsequent adjustments are described as loss and LAE “development.” Such development can be either favorable or unfavorable to the Company’s financial results and may vary by line of business. In this section, all amounts presented include catastrophe losses and LAE, unless otherwise indicated.

The table below provides a reconciliation of the gross beginning and ending reserve for unpaid losses and loss adjustment expenses.

As a result of continuing trends in the Company’s business, reserves, including catastrophes, have been re-estimated for all prior accident years and were decreased by$78.8 millionand $6.8 million in 2024 and 2023, respectively.

For the nine months ended September 30, 2024, net favorable loss and LAE development was $78.8 million, primarily as a result of net favorable development of $39.7 million in Core Commercial, $34.8 million in Specialty and $4.3 million in Personal Lines. The favorable development in Core Commercial was primarily due to favorable catastrophe development of $24.8 million, primarily due to lower than expected losses related to events from accident years 2020 through 2023, including several convective storms across multiple states, Winter Storm Elliot, Hurricane Ian, and Hurricane Ida. Additionally, and to a lesser extent, Core Commercial favorable development resulted from lower than expected non-catastrophe losses across each of the main product lines: commercial multiple peril, commercial automobile, workers’ compensation and other commercial lines. Within non-catastrophe losses, lower than expected property losses of $25.6 million were partially offset by higher than expected losses of $10.7 million across several of the liability lines of business. The favorable development in Specialty was primarily due to lower than expected non-catastrophe losses in the Professional and Executive Lines division’s liability claims-made coverage of $14.1 million and, to a lesser extent, in the surety line. In addition, there was lower than expected catastrophe losses in our Marine and Specialty P&C divisions. The net favorable development in Personal Lines was primarily due to lower than expected non-catastrophe losses of $13.4 million in the personal automobile line within physical damage coverage. This favorable development was partially offset by higher than expected losses of $10.3 million in other personal lines within the standalone umbrella coverage.

For the nine months ended September 30, 2023, net favorable loss and LAE development was $6.8 million, primarily as a result of favorable development of $43.1 million in Specialty, partially offset by net unfavorable development of $35.1 million in Personal Lines and, to a lesser extent, net unfavorable development of $1.2 million in Core Commercial. The favorable development in Specialty was primarily due to lower than expected losses and LAE of $28.6 million in the Professional and Executive Lines division, primarily in accident years 2019 through 2022 and, to a lesser extent, lower than expected losses and LAE of $9.2 million in the surety line. The unfavorable development in Personal Lines was primarily due to higher than expected losses of $16.4 million within the personal automobile line, higher than expected losses of $11.4 million in the homeowners line, primarily in accident year 2022 due to Winter Storm Elliott and, to a lesser extent, higher than expected losses in the standalone personal umbrella coverage. The higher than expected losses in the personal automobile line were primarily within bodily injury in accident years 2018, 2019 and 2022, and within property damage coverages in accident years 2021 and 2022, partially offset by lower than expected losses within personal injury protection coverages in accident years 2021 through 2022. The net unfavorable development in Core Commercial was primarily due to higher than expected losses of $13.5 million within the commercial automobile line driven by higher bodily injury and personal injury protection losses in accident years 2014 through 2019 and, to a lesser extent, higher than expected losses in miscellaneous property and commercial umbrella coverages. The unfavorable development in Core Commercial was partially offset by lower than expected losses of $17.7 million within the workers’ compensation line, primarily in accident years 2013 through 2021, and within the commercial multiple peril line, primarily in accident year 2022, due to Winter Storm Elliott.

12. Commitments and Contingencies

Legal Proceedings

The Company has been named a defendant in various legal proceedings arising in the normal course of business. In addition, the Company is involved, from time to time, in examinations, investigations and proceedings by governmental and self-regulatory agencies. The potential outcome of any such action or regulatory proceedings in which the Company has been named a defendant or the subject of an inquiry, examination or investigation, and its ultimate liability, if any, from such action or regulatory proceedings, is difficult to predict at this time. The ultimate resolutions of such proceedings are not expected to have a material effect on the Company’s financial position, although they could have a material effect on the results of operations for a particular quarterly or annual period.

Residual Markets

The Company is required to participate in residual markets in various states, which generally pertain to high risk insureds, disrupted markets or lines of business or geographic areas where rates are regarded as excessive. The results of the residual markets are not subject to the predictability associated with the Company’s own managed business, and are significant to both the personal and commercial automobile lines of business.

13. Subsequent Events

There were no subsequent events requiring adjustment to the financial statements and no additional disclosure required in the notes to the consolidated financial statements.

Part I