SELECTIVE INSURANCE GROUP INC

NOTE 1. Basis of Presentation

The words "Company," "we," "us," or "our" refer to Selective Insurance Group, Inc. (the "Parent") and its subsidiaries, except as expressly indicated or the context requires otherwise. We have prepared our interim unaudited consolidated financial statements ("Financial Statements") in conformity with (i) United States ("U.S.") generally accepted accounting principles ("GAAP"), and (ii) the rules and regulations of the U.S. Securities and Exchange Commission ("SEC") regarding interim financial reporting. These require management to make estimates and assumptions that affect the reported financial statement balances and the disclosure of contingent assets and liabilities. Actual results could differ from those estimates. All significant intercompany accounts and transactions are eliminated in consolidation.

Our Financial Statements reflect all adjustments that, in our opinion, are normal, recurring, and necessary for a fair presentation of our results of operations and financial condition. Our Financial Statements cover the third quarters ended September 30, 2025 ("Third Quarter 2025") and September 30, 2024 ("Third Quarter 2024"), and the nine-month periods ended September 30, 2025 ("Nine Months 2025") and September 30, 2024 ("Nine Months 2024"). Our Financial Statements do not include all information and disclosures required by GAAP and the SEC for audited annual financial statements. Because interim period results of operations are not necessarily indicative of full-year results, our Financial Statements should be read in conjunction with the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2024 ("2024 Annual Report") filed with the SEC.

NOTE 2. Adoption of Accounting Pronouncements

We adopted no accounting pronouncements in Nine Months 2025.

Pronouncements to be effective in the future

In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures ("ASU 2023-09"). ASU 2023-09 amends disclosure requirements to provide greater transparency on income taxes. The following additional disclosures are required annually: (i) specific required categories in the rate reconciliation, (ii) additional information for reconciling items that meet a quantitative threshold, (iii) the amount of income taxes paid disaggregated by jurisdiction, and (iv) income tax expense (or benefit) from continuing operations disaggregated by federal, state, and foreign. ASU 2023-09 is effective for annual periods beginning after December 15, 2024. Amendments can be applied prospectively. Retrospective application and early adoption are permitted. As it only requires additional disclosure, ASU 2023-09 will not have a material impact on our financial condition or results of operations.

In November 2024, the FASB issued ASU 2024-03, Disaggregation of Income Statement Expenses ("ASU 2024-03"). ASU 2024-03 requires disaggregated disclosure of income statement expenses. This ASU does not change the expense captions on the income statement; rather, it requires disaggregation of certain expense captions into specified categories in disclosures within the footnotes to the financial statements. ASU 2024-03 is effective for annual reporting periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027. This ASU can be applied prospectively. Retrospective application and early adoption are permitted. As ASU 2024-03 only requires additional disclosure, it will not have a material impact on our financial condition and results of operations.

In September 2025, the FASB issued ASU 2025-06, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40) ("ASU 2025-06"). ASU 2025-06 updates the accounting guidance for internal-use software by eliminating references to software development project stages, thereby requiring companies to start capitalizing software costs when (i) management has authorized and committed to funding the project, and (ii) it is probable the project will be completed and the software will be used as intended. ASU 2025-06 is effective for annual periods beginning after December 15, 2027, with early adoption permitted. Amendments can be applied either (i) prospectively, (ii) through a modified transition approach based on the status projects and whether software costs were capitalized before the date of adoption, or (iii) retrospectively. We are currently evaluating the impact of ASU 2025-06 on the Company's financial condition and results of operations.

NOTE 3. Statements of Cash Flows

Supplemental cash flow information was as follows:

1 Examples of corporate actions include like-kind exchanges, non-cash acquisitions, and stock splits.

The following table provides a reconciliation of cash and restricted cash reported within the Consolidated Balance Sheets to the amount reported in the Consolidated Statements of Cash Flows:

Amounts in restricted cash represent cash received from the National Flood Insurance Program ("NFIP") that can only be used to pay flood claims under the Write Your Own program.

NOTE 4. Investments

(a)Information regarding our AFS securities as of September 30, 2025 and December 31, 2024, were as follows:

The following tables provide a roll forward of the allowance for credit losses on our AFS fixed income securities for the indicated periods:

During Nine Months 2025 and Nine Months 2024, we had no write-offs or recoveries of our AFS fixed income securities.

For information on our methodology and significant inputs used to measure expected credit losses, our accounting policy for recognizing write-offs of uncollectible amounts, and our treatment of accrued interest, refer to Note 2. "Summary of Significant Accounting Policies" in Item 8. "Financial Statements and Supplementary Data." of our 2024 Annual Report. Accrued interest on AFS securities was $84.0 million as of September 30, 2025, and $74.3 million as of December 31, 2024. We did not record any material write-offs of accrued interest in Nine Months 2025 and Nine Months 2024.

(b)Quantitative information about unrealized losses on our AFS portfolio follows:

We currently do not intend to sell any of the securities summarized in the tables above, nor do we believe we will be required to sell any of them. The decrease in gross unrealized losses at September 30, 2025, compared to December 31, 2024, was primarily driven by a decrease in benchmark U.S. Treasury rates. Considering these factors and our review of these securities under our credit loss policy as described in Note 2. "Summary of Significant Accounting Policies" in Item 8. "Financial Statements and Supplementary Data." of our 2024 Annual Report, we have concluded that no additional allowance for credit loss is required on these balances beyond the allowance for credit loss recorded as of September 30, 2025. This conclusion reflects our current judgment about the financial position and future prospects of the entities that issued the investment security and underlying collateral.

(c)AFS and held-to-maturity ("HTM") fixed income securities at September 30, 2025, by contractual maturity are shown below. The maturities of RMBS, CMBS, CLO and other ABS securities were calculated using each security's expected maturities. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.

(d)The following table summarizes our alternative investment portfolio by strategy:

We are contractually committed to make additional investments up to the remaining commitments stated above. We did not provide any non-contractual financial support during 2025 or 2024.

The following table shows gross summarized financial information for our alternative investments portfolio, including the portion we do not own. As the majority of these investments report results to us on a one-quarter lag, the summarized financial statement information is for the 3- and 9-month periods ended June 30:

(e) We have pledged certain AFS fixed income securities as collateral related to our borrowing relationships with the Federal Home Loan Bank of Indianapolis ("FHLBI") and the Federal Home Loan Bank of New York ("FHLBNY"). We also had certain securities on deposit with various state and regulatory agencies at September 30, 2025, to comply with insurance laws. We retain all rights regarding all securities pledged as collateral.

The following table summarizes the market value of these securities at September 30, 2025:

(f) We did not have exposure to any credit concentration risk of a single issuer greater than 10% of our stockholders' equity, other than to certain U.S. government agencies, as of September 30, 2025, or December 31, 2024.

(g)The components of pre-tax net investment income earned were as follows:

The increase in net investment income earned in Third Quarter 2025 and Nine Months 2025 compared to the same prior-year periods was primarily driven by active portfolio management, operating cash flow deployment, and net proceeds from the issuance of our 5.90% Senior Notes in the first quarter of 2025. For additional information regarding our 5.90% Senior Notes issuance, see Note 12. "Indebtedness" in Item 1. "Financial Statements" of this Form 10-Q.

(h)The following table summarizes net realized and unrealized investment gains and losses for the periods indicated:

Net unrealized gains and losses recognized in income on equity securities, as reflected in the table above, included the following:

NOTE 5. Fair Value Measurements

The financial assets in our investment portfolio are primarily measured at fair value as disclosed on the Consolidated Balance Sheets. The following table presents the carrying amounts and fair values of our financial liabilities as of September 30, 2025, and December 31, 2024:

For discussion regarding the fair value techniques of our financial instruments, refer to Note 2. "Summary of Significant Accounting Policies" in Item 8. "Financial Statements and Supplementary Data." of our 2024 Annual Report.

The following tables provide quantitative disclosures of our financial assets that were measured and recorded at fair value at September 30, 2025, and December 31, 2024:

1 Investments amounting to $275.5 million at September 30, 2025, and $169.5 million at December 31, 2024, were measured at fair value using the net asset value per share (or its practical expedient) and have not been classified in the fair value hierarchy. These investments are not redeemable, and the timing of liquidations of the underlying assets is unknown at each reporting period. The fair value amounts in this table are intended to permit reconciliation of the fair value hierarchy to total assets measured at fair value.

The following tables provide a summary of Level 3 changes in Nine Months 2025 and Nine Months 2024:

The following tables present quantitative information about the significant unobservable inputs used in the fair value measurements of Level 3 assets at September 30, 2025, and December 31, 2024:

1 Other is comprised of broker quotes or other third-party pricing for which there is a lack of transparency into the inputs used to develop the valuations. The quantitative details of these unobservable inputs are neither provided to us, nor reasonably available to us, and therefore are not included in the tables above.

For the securities in the tables above valued using a discounted cash flow analysis, we apply an illiquidity spread in determining fair value. An increase in this assumption would result in a lower fair value measurement.

The following tables provide quantitative information about our financial assets and liabilities that were not measured at fair value, but were disclosed as such at September 30, 2025, and December 31, 2024:

NOTE 6. Allowance for Credit Losses on Premiums Receivable

The following table provides a roll forward of the allowance for credit losses on our premiums receivable balance for the indicated periods:

For a discussion of the methodology used to evaluate our estimate of expected credit losses on premiums receivable, refer to Note 2. "Summary of Significant Accounting Policies" in Item 8. "Financial Statements and Supplementary Data." of our 2024 Annual Report.

NOTE 7. Reinsurance

We evaluate and monitor the financial condition of our reinsurers under voluntary reinsurance arrangements to minimize our exposure to significant losses from reinsurer insolvencies. The following tables provide (i) a disaggregation of our reinsurance recoverable balance by financial strength rating and (ii) an aging analysis of our past due reinsurance recoverable balances as of September 30, 2025, and December 31, 2024:

The $216.9 million decrease in "Federal and state pools" as of September 30, 2025, compared to December 31, 2024, primarily relates to claim payments on Hurricane Helene losses reserved for at December 31, 2024. These losses relate to our participation in the NFIP Write Your Own Program, and are 100% ceded to the NFIP.

The following table provides a roll forward of the allowance for credit losses on our reinsurance recoverable balance for the periods indicated:

For a discussion of the methodology used to evaluate our estimate of expected credit losses on our reinsurance recoverable balance, refer to Note 2. "Summary of Significant Accounting Policies" in Item 8. "Financial Statements and Supplementary Data." of our 2024 Annual Report.

The following table lists direct, assumed, and ceded reinsurance amounts for premiums written, premiums earned, and loss and loss expense incurred for the indicated periods. For more information about reinsurance, refer to Note 9. "Reinsurance" in Item 8. "Financial Statements and Supplementary Data." of our 2024 Annual Report.

NOTE 8. Reserve for Loss and Loss Expense

The table below provides a roll forward of the reserve for loss and loss expense for beginning and ending reserve balances:

Prior year reserve development in Nine Months 2025 was unfavorable by $70.1 million, consisting of $90.0 million of unfavorable casualty reserve development, partially offset by $19.9 million of favorable property reserve development. Our Standard Commercial Lines segment drove the unfavorable casualty reserve development consisting of (i) $60.0 million in our commercial automobile line of business, related to increased severities primarily in accident years 2022 through 2024 and (ii) $20.0 million in our general liability line of business, driven by higher severities primarily in accident years 2022 through 2024. We also had unfavorable development of $10.0 million in our personal automobile line of business, primarily related to increased severities in accident year 2024.

Prior year reserve development in Nine Months 2024 was unfavorable by $182.7 million, consisting of $211.0 million of unfavorable casualty reserve development, partially offset by $28.3 million of favorable property reserve development. Our Standard Commercial Lines segment drove the unfavorable casualty reserve development consisting of (i) $216.0 million in our general liability line of business, primarily driven by increased severities in accident years 2020 through 2023, (ii) $20.0 million in our commercial automobile line of business, partially offset by (iii) $20.0 million of favorable casualty reserve development in our workers compensation line of business and (iv) $5.0 million in our bonds line of business.

Additionally in Nine Months 2024, in our Standard Personal Lines segment, we had unfavorable casualty reserve development of $5.0 million in our personal automobile line of business, offset by favorable development of $5.0 million in our homeowners line of business.

NOTE 9. Segment Information

We evaluate the results of ourfour reportable segments as follows:

•Our Standard Commercial Lines, Standard Personal Lines, and E&S Lines are evaluated on (i) before and after-tax underwriting results (net premiums earned, incurred loss and loss expense, policyholder dividends, policy acquisition costs, and other underwriting expenses), (ii) their return on equity ("ROE") contribution, and (iii) their combined ratios.

•Our Investments segment is primarily evaluated on after-tax net investment income and its ROE contribution. After-tax net realized and unrealized gains and losses are also included in our Investments segment results.

In computing each segment's results, we do not make adjustments for interest expense or corporate expenses. No segment has a separate investment portfolio or allocated assets.

(a)The following table presents revenues by segments and a reconciliation to consolidated revenue.

(b)The following tables present information about our segments' pre- and after-tax income, significant expenses, and reconciliations to consolidated results for the periods indicated.

The "Other segment expenses" primarily consist of (i) fees paid for licenses, (ii) depreciation expense, and (iii) general overhead items to operate our business operations, including travel, postage, telephone, and utility expenses. "Loss and loss expense incurred" includes a portion of salaries and employee benefits related to claims personnel.

(c)The following tables present reconciliations of our segments' ROE contributions and combined ratios to consolidated results.

1"Net underwriting expenses incurred" includes "Other income" allocated to each reportable segment.

NOTE 10. Retirement Plans

The primary pension plan for our employees is the Retirement Income Plan for Selective Insurance Company of America (the "Pension Plan"). The Pension Plan is closed to new entrants, and its benefits ceased accruing after March 31, 2016. For more information about Selective Insurance Company of America's ("SICA") retirement plans, see Note 15. "Retirement Plans" in Item 8. "Financial Statements and Supplementary Data." of our 2024 Annual Report.

The following tables provide information about the Pension Plan:

1 The components of net periodic pension cost (benefit) are included within "Loss and loss expense incurred" and "Other insurance expenses" on the Consolidated Statements of Income.

NOTE 11. Comprehensive Income (Loss)

The components of comprehensive income (loss), both gross and net of tax, for Third Quarter 2025 and Nine Months 2025 and Third Quarter 2024 and Nine Months 2024 were as follows:

The following table shows each component of accumulated other comprehensive income (loss) ("AOCI") (net of taxes), including balances and changes, as of September 30, 2025:

1 Represents change in unrealized gains (losses) on securities with credit loss recognized in earnings.

The reclassifications out of AOCI were as follows:

NOTE 12. Indebtedness

The table below provides a summary of our outstanding debt at September 30, 2025, and December 31, 2024:

Short-Term Debt Activity

On June 30, 2025, the Parent entered into a Credit Agreement (the "Line of Credit") with the lenders named therein (the "Lenders") and Wells Fargo Bank, National Association, as administrative agent. Under the Line of Credit, the Lenders have agreed to provide the Parent with a $100 million revolving credit facility that can be increased to $200 million with the Lenders' consent. The Line of Credit will mature on June 30, 2028, and has a variable interest rate based on the Parent’s debt ratings. The Parent, as borrower, was a party to a credit agreement dated November 7, 2022, for a $50 million revolving credit facility, which could be increased to $125 million with the consent of the lenders (the "Prior Credit Agreement"). The Prior Credit Agreement was scheduled to mature on November 7, 2025. The Parent terminated the Prior Credit Agreement in conjunction with entering into the Line of Credit. The termination of the Prior Credit Agreement did not result in any penalties to the Parent. There wereno borrowings under the Line of Credit or the Prior Credit Agreement during Nine Months 2025.

Our Line of Credit contains representations, warranties, and covenants that are customary for credit facilities of this type, including, without limitation, financial covenants under which we are obligated to maintain a minimum consolidated net worth, a maximum ratio of consolidated debt to total capitalization, and covenants limiting our ability to: (i) merge or liquidate; (ii) incur debt or liens; (iii) dispose of assets; (iv) make investments and acquisitions; and (v) engage in transactions with affiliates.

The table below outlines information regarding certain covenants in the Line of Credit:

1 Calculated in accordance with the Line of Credit.

In addition to the above requirements, the Line of Credit contains a cross-default provision that provides that the Line of Credit will be in default if we fail to comply with any condition, covenant, or agreement (including payment of principal and interest when due on any debt with an aggregate principal amount of at least $30 million) that causes or permits the acceleration of principal. The Line of Credit also limits borrowings from the FHLBI and the FHLBNY to 10% of the respective member company's admitted assets for the previous year.

Long-Term Debt Activity

In the first quarter of 2025, we issued $400 million of 5.90% Senior Notes due 2035 at a discount of $0.1 million, resulting in $395.9 million of net proceeds after debt issuance costs of approximately $4.1 million. The 5.90% Senior Notes will pay interest on April 15 and October 15 of each year, beginning on October 15, 2025. The proceeds from this debt issuance are being used for general corporate purposes, including supporting organic growth.

For additional information on our indebtedness and debt covenants, see Note 11. "Indebtedness" in Item 8. "Financial Statements and Supplementary Data." of our 2024 Annual Report.

NOTE 13. Equity

On December 2, 2020, we announced that our Board of Directors authorized a $100 million share repurchase program, with no set expiration or termination date. Our repurchase program does not obligate us to acquire any particular common stock amount. The program grants management discretion to determine the timing and amount of any share repurchases under the authorization based on market conditions and other considerations. In Nine Months 2025, we repurchased 698,312 shares of our common stock under the program. The cost of these repurchases was $55.6 million, including commissions. Authorized repurchases reflected in the Consolidated Statement of Stockholders' equity also included estimated excise tax of $0.3 million in Nine Months 2025. We had $19.9 million of remaining program capacity as of September 30, 2025.

On October 22, 2025, the Company announced that its Board of Directors authorized a new share repurchase program under which the Company may repurchase issued and outstanding shares of common stock up to $200 million, exclusive of any excise tax impact. This program is effective on October 27, 2025 and has no expiration date. The Company’s existing share repurchase program remained effective through October 24, 2025.

NOTE 14. Earnings per Common Share

The following table presents the calculations of earnings per common share ("EPS") on a basic and diluted basis:

NOTE 15. Federal Income Taxes

On July 4, 2025, the One Big Beautiful Bill Act (the "Act") became law. The legislation is extensive, and some changes will affect our taxes in current and future years. The tax law changes are reflected in the enactment period, which is Third Quarter 2025. We have analyzed the Act's major impacts, which include provisions that allow 100% bonus depreciation for certain qualified assets and full deduction of domestic research and development expenditures. Both are temporary differences and do not impact total tax expense but provide a cash tax benefit that is estimated at $6.4 million for the 2025 tax year.

NOTE 16. Litigation

As of September 30, 2025, we do not believe we are involved in any legal action that could have a material adverse effect on our consolidated financial condition, results of operations, or cash flows.

In the ordinary course of conducting business, we are parties in various legal actions. Most are claims litigation involving ourten insurance subsidiaries (collectively referred to as "Insurance Subsidiaries") as (i) liability insurers defending or providing indemnity for third-party claims brought against our customers, (ii) insurers defending first-party coverage claims brought against them, or (iii) liability insurers seeking declaratory judgment on our insurance coverage obligations. We account for such activity by establishing unpaid loss and loss expense reserves. Considering potential losses and defense costs reserves, we expect that any potential ultimate liability for ordinary course claims litigation will not be material to our consolidated financial condition, results of operations, or cash flows.

From time to time, our Insurance Subsidiaries are named as defendants in other legal actions, some asserting claims for substantial amounts. Plaintiffs may style these actions as class actions and seek judicial certification of a state or national class for allegations involving our business practices, such as improper medical provider reimbursement under workers compensation and personal and commercial automobile insurance policies or improper reimbursement for automobile parts. Similarly, our Insurance Subsidiaries can be named defendants in individual actions seeking extra-contractual damages, punitive damages, or penalties, often alleging bad faith in handling insurance claims. We believe we have valid defenses to these allegations and account for such activity by establishing unpaid loss and loss expense reserves. Considering estimated losses and defense costs reserves, we expect that any potential ultimate liability for these other legal actions will not be material to our consolidated financial condition. Litigation outcomes are inherently unpredictable and the amounts sought in certain actions are large or indeterminate. Adverse outcomes could have a material adverse effect on our consolidated results of operations or cash flows in the quarterly or annual period in which they occur.