Earnings release
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Exhibit 99.1 Kinsale Capital Group Reports Third Quarter 2026 Results Richmond, VA, October 22, 2026 - Kinsale Capital Group, Inc. (NYSE: KNSL) reported net income of $98.1 million, $4.36 per diluted share, for the third quarter of 2026 compared to $141.6 million, $6.09 per diluted share, for the third quarter of 2025. Net income was $386.6 million, $16.97 per diluted share, for the first nine months of 2026 compared to $365.0 million, $15.67 per diluted share, for the first nine months of 2025. Net income included after-tax catastrophe losses of $1.7 million in the third quarter of 2026 and $1.0 million in the third quarter of 2025. Net income included after-tax catastrophe losses of $7.2 million in the first nine months of 2026 and $21.7 million in the first nine months of 2025. Net operating earnings were $128.3 million, $5.70 per diluted share, for the third quarter of 2026 compared to $121.2 million, $5.21 per diluted share, for the third quarter of 2025. Net operating earnings were $372.3 million, $16.34 per diluted share, for the first nine months of 2026 compared to $319.0 million, $13.70 per diluted share, for the first nine months of 2025. Three Months EndedSeptember 30, Nine Months EndedSeptember 30, 2026 2025 2026 2025 Diluted earnings per share $ 4.36 $ 6.09 $ 16.97 $ 15.67 Diluted operating earnings per share $ 5.70 $ 5.21 $ 16.34 $ 13.70 Highlights for the quarter included: • Gross written premiums decreased by 4.8% to $462.9 million, and net written premiums decreased by 1.5% to $399.1 million • Net earned premiums increased by 3.0% to $423.5 million • Net investment income increased by 17.5% to $58.3 million • Underwriting income was $107.1 million, resulting in a combined ratio of 75.4% • Annualized return on equity was 26.6% for the nine months ended September 30, 2026 • Annualized operating return on equity was 25.6% for the nine months ended September 30, 2026 • Net income includes a $37.6 million pre-tax realized loss on the sale of fixed-maturity securities due to a strategic repositioning of the investment portfolio expected to improve long-term returns "Our underwriting results this quarter demonstrate discipline in a competitive market," said Chairman, President and Chief Executive Officer, Michael P. Kehoe. "We continue to produce exceptional underwriting margins and strong investment income which allows us to return capital to stockholders. Disciplined underwriting and technology-enabled low costs remain the foundation of our strategy to create long-term value for our stockholders." (1) (1) (1) (2) (5) (6) (7) 1
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Results of Operations Underwriting Results Gross written premiums were $462.9 million for the third quarter of 2026 compared to $486.3 million for the third quarter of 2025, a decrease of 4.8%. Gross written premiums were $1,472.5 million for the first nine months of 2026 compared to $1,526.0 million for the first nine months of 2025, a decrease of 3.5%. The decrease in gross written premiums was primarily due to heightened competition in the Company's property divisions, where premiums declined 19.3% and 18.7% in the third quarter and first nine months of 2026, respectively, including declines of 26.8% and 29.8% in the Commercial Property Division. Gross written premiums in the Company's casualty business increased 0.9% for the third quarter of 2026 and 3.0% for the first nine months of 2026 compared to the prior-year periods, primarily due to an increase in bound accounts offset in part by a change in business mix towards smaller accounts. Underwriting income was $107.1 million, resulting in a combined ratio of 75.4% for the third quarter of 2026, compared to $105.7 million and a combined ratio of 74.9% for the third quarter of 2025. The increase in underwriting income was largely due to growth in net earned premiums and higher favorable development of loss reserves from prior accident years offset in part by lower ceding commissions as a result of increased retention on the Company's reinsurance treaties. Loss and expense ratios were 53.4% and 22.0%, respectively, for the third quarter of 2026 compared to 53.9% and 21.0% for the third quarter of 2025. Underwriting income was $307.0 million, resulting in a combined ratio of 76.1% for the first nine months of 2026 compared to $268.6 million and a combined ratio of 77.5% for the first nine months of 2025. The increase in underwriting income was largely due to growth in net earned premiums, lower catastrophe losses and higher favorable development of loss reserves from prior accident years. Loss and expense ratios were 54.5% and 21.6%, respectively, for the first nine months of 2026 compared to 56.9% and 20.6% for the first nine months of 2025. The loss ratio for the first nine months of 2025 included 2.3 points of net catastrophe losses, primarily related to the Palisades Fire. The increase in the expense ratio for both the third quarter and first nine months of 2026 compared to the prior-year periods was primarily due to lower ceding commissions as a result of higher retention on the Company’s reinsurance treaties. The economic effect of lower ceding commissions was more than offset by the retention of incremental underwriting margin and higher investment income. (2) (5) (5) (2) (3) (4) (2) (5) (5) (2) (3) (4) 2
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Summary of Operating Results The Company’s operating results for the three and nine months ended September 30, 2026 and 2025 are summarized as follows: Three Months Ended September 30, Nine Months Ended September 30, 2026 2025 2026 2025 ($ in thousands) Gross written premiums $ 462,868 $ 486,251 $ 1,472,494 $ 1,526,048 Ceded written premiums (63,724) (81,191) (217,605) (280,583) Net written premiums $ 399,144 $ 405,060 $ 1,254,889 $ 1,245,465 Net earned premiums $ 423,472 $ 410,957 $ 1,247,928 $ 1,160,360 Fee income 11,099 10,300 34,035 30,655 Losses and loss adjustment expenses 232,079 227,162 698,120 677,497 Underwriting, acquisition and insuranceexpenses 95,429 88,423 276,834 244,932 Underwriting income $ 107,063 $ 105,672 $ 307,009 $ 268,586 Loss ratio 53.4 % 53.9 % 54.5 % 56.9 % Expense ratio 22.0 % 21.0 % 21.6 % 20.6 % Combined ratio 75.4 % 74.9 % 76.1 % 77.5 % Annualized return on equity 19.9 % 31.6 % 26.6 % 29.1 % Annualized operating return on equity 26.0 % 27.0 % 25.6 % 25.4 % Net operating earnings is a non-GAAP financial measure. See discussion of "Non-GAAP Financial Measures" below. Underwriting income is a non-GAAP financial measure. See discussion of "Non-GAAP Financial Measures" below. Loss ratio, expressed as a percentage, is the ratio of losses and loss adjustment expenses to the sum of net earned premiums and fee income. Expense ratio, expressed as a percentage, is the ratio of underwriting, acquisition and insurance expenses to the sum of net earned premiums and fee income. The combined ratio is the sum of the loss ratio and expense ratio as presented. Calculations of each component may not add due to rounding. Annualized return on equity is net income expressed on an annualized basis as a percentage of average beginning and ending stockholders’ equity during the period. Annualized operating return on equity is net operating earnings expressed on an annualized basis as a percentage of average beginning and ending stockholders’ equity during the period. (2) (3) (4) (5) (6) (7) (1) (2) (3) (4) (5) (6) (7) 3
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The following table summarizes losses incurred for the current accident year and the development of prior accident years for the three and nine months ended September 30, 2026 and 2025: Three Months EndedSeptember 30, 2026 Three Months EndedSeptember 30, 2025 Losses andLossAdjustmentExpenses % of Sum ofEarnedPremiums andFee Income Losses andLossAdjustmentExpenses % of Sum ofEarnedPremiums andFee Income Loss ratio: ($ in thousands) Current accident year $ 249,570 57.4 % $ 241,704 57.3 % Current accident year - catastrophe losses 2,173 0.5 % 1,216 0.3 % Effect of prior accident year development (19,664) (4.5)% (15,758) (3.7)% Total $ 232,079 53.4 % $ 227,162 53.9 % Nine Months EndedSeptember 30, 2026 Nine Months EndedSeptember 30, 2025 Losses andLossAdjustmentExpenses % of Sum ofEarnedPremiums andFee Income Losses andLossAdjustmentExpenses % of Sum ofEarnedPremiums andFee Income Loss ratio: ($ in thousands) Current accident year $ 746,721 58.3 % $ 695,851 58.4 % Current accident year - catastrophe losses 9,162 0.7 % 27,499 2.3 % Effect of prior accident year development (57,763) (4.5)% (45,853) (3.8)% Total $ 698,120 54.5 % $ 677,497 56.9 % Investment Results Net investment income was $58.3 million in the third quarter of 2026 compared to $49.6 million in the third quarter of 2025, an increase of 17.5%. Net investment income was $169.4 million in the first nine months of 2026 compared to $139.9 million in the first nine months of 2025, an increase of 21.1%. These increases were driven by growth in the Company's investment portfolio generated largely from the investment of strong operating cash flows. The Company’s investment portfolio had an annualized gross investment return of 4.4% and 4.3% for the first nine months of 2026 and 2025, respectively. Funds are generally invested conservatively in high-quality securities with an average credit quality of "AA-" and the weighted average duration of the fixed-maturity investment portfolio, including cash equivalents, was 4.4 years and 4.0 years at September 30, 2026 and December 31, 2025, respectively. Cash and invested assets totaled $5.5 billion at September 30, 2026 and $5.2 billion at December 31, 2025. During the third quarter of 2026, the Company repositioned a portion of its investment portfolio to improve expected long-term returns. The Company sold certain common stock holdings in a gain position and reinvested the proceeds in higher conviction common stock investments. The Company simultaneously sold lower-yielding fixed-maturity securities in a largely offsetting loss position and reinvested the proceeds in higher-yielding fixed-maturity investments. The repositioning reduced third quarter pre-tax earnings by $37.6 million as the equity gains were recorded through earnings in the period of appreciation and the bond losses were recorded through earnings upon sale. There was no impact to book value. Gross investment return is investment income from fixed-maturity and equity securities (and short-term investments, if any), before any deductions for fees and expenses, expressed as a percentage of average beginning and ending book values of those investments during the period. (8) (8) 4
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Capital Return to Stockholders During the third quarter of 2026, the Company repurchased 269,004 shares of its common stock in the open market at an average price of $371.74 per share for a total cost of $100.0 million. At September 30, 2026, the Company had $237.5 million of capacity remaining under its share repurchase program. In the aggregate, the Company has repurchased 990,763 shares of its common stock for a total cost of $362.5 million. During the third quarter of 2026, the Company declared and paid a cash dividend of $0.25 per share of common stock for a total distribution of $5.6 million. Other The effective tax rates for the nine months ended September 30, 2026 and September 30, 2025 were 20.0% and 20.6%, respectively. In the first nine months of 2026 and 2025, the effective tax rates were lower than the federal statutory rate of 21% primarily due to the tax benefits from stock-based compensation, including stock options exercised, and from tax-exempt investment income. Stockholders' equity was $1.9 billion at September 30, 2026 and $2.0 billion at December 31, 2025. Book value per share was $85.25 at September 30, 2026 compared to $84.66 at December 31, 2025. Annualized operating return on equity was 25.6% for the first nine months of 2026, an increase from 25.4% for the first nine months of 2025. The increase was due primarily to higher profitability compared to the prior-year period offset in part by higher average stockholders' equity. Non-GAAP Financial Measures Net Operating Earnings Net operating earnings is defined as net income excluding the effects of the change in the fair value of equity securities, after taxes, net realized investment gains and losses, after taxes, and change in allowance for credit losses on investments, after taxes. Management believes the exclusion of these items provides a useful comparison of the Company's underlying business performance from period to period. Net operating earnings and percentages or calculations using net operating earnings (e.g., diluted operating earnings per share and annualized operating return on equity) are non-GAAP financial measures. Net operating earnings should not be viewed as a substitute for net income calculated in accordance with GAAP, and other companies may define net operating earnings differently. (7) 5
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For the three and nine months ended September 30, 2026 and 2025, net income and diluted earnings per share reconcile to net operating earnings and diluted operating earnings per share as follows: Three Months Ended September 30, Nine Months Ended September 30, 2026 2025 2026 2025 ($ in thousands, except per share data) Net operating earnings: Net income $ 98,129 $ 141,646 $ 386,557 $ 364,994 Adjustments: Change in the fair value of equitysecurities, before taxes 37,769 (23,717) (10,071) (55,376) Income tax expense (benefit) (7,931) 4,981 2,115 11,629 Change in the fair value of equitysecurities, after taxes 29,838 (18,736) (7,956) (43,747) Net realized investment (gains) losses,before taxes 419 (2,159) (8,029) (2,832) Income tax expense (benefit) (88) 453 1,686 595 Net realized investment (gains)losses, after taxes 331 (1,706) (6,343) (2,237) Change in allowance for credit losses oninvestments, before taxes (1) (4) 26 11 Income tax (benefit) expense — 1 (5) (2) Change in allowance for credit losseson investments, after taxes (1) (3) 21 9 Net operating earnings $ 128,297 $ 121,201 $ 372,279 $ 319,019 Diluted operating earnings per share: Diluted earnings per share $ 4.36 $ 6.09 $ 16.97 $ 15.67 Change in the fair value of equitysecurities, after taxes, per share 1.33 (0.81) (0.35) (1.88) Net realized investment (gains) losses,after taxes, per share 0.01 (0.07) (0.28) (0.10) Diluted operating earnings per share $ 5.70 $ 5.21 $ 16.34 $ 13.70 Operating return on equity: Average equity $ 1,977,063 $ 1,793,895 $ 1,939,297 $ 1,674,389 Annualized return on equity 19.9 % 31.6 % 26.6 % 29.1 % Annualized operating return on equity 26.0 % 27.0 % 25.6 % 25.4 % Income taxes on adjustments to reconcile net income to net operating earnings use a 21% effective tax rate. Diluted operating earnings per share may not add due to rounding. Average equity is computed by adding the total stockholders' equity as of the date indicated to the prior quarter-end or year-end total, as applicable, and dividing by two. Annualized return on equity is net income expressed on an annualized basis as a percentage of average beginning and ending stockholders' equity during the period. Annualized operating return on equity is net operating earnings expressed on an annualized basis as a percentage of average beginning and ending stockholders' equity during the period. (1) (1) (1) (2) (3) (4) (5) (1) (2) (3) (4) (5) 6
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Underwriting Income Underwriting income is defined as net income excluding net investment income, the change in the fair value of equity securities, net realized investment gains and losses, change in allowance for credit losses on investments, interest expense, other expenses, other income and income tax expense. The Company uses underwriting income as an internal performance measure in the management of its operations because the Company believes it gives management and users of the Company's financial information useful insight into the Company's results of operations and underlying business performance. Underwriting income should not be viewed as a substitute for net income calculated in accordance with GAAP, and other companies may define underwriting income differently. For the three and nine months ended September 30, 2026 and 2025, net income reconciles to underwriting income as follows: Three Months Ended September30, Nine Months Ended September30, 2026 2025 2026 2025 (in thousands) Net income $ 98,129 $ 141,646 $ 386,557 $ 364,994 Income tax expense 25,490 37,232 96,526 94,484 Income before income taxes 123,619 178,878 483,083 459,478 Net investment income (58,265) (49,604) (169,428) (139,896) Change in the fair value of equity securities 37,769 (23,717) (10,071) (55,376) Net realized investment (gains) losses 419 (2,159) (8,029) (2,832) Change in allowance for credit losses oninvestments (1) (4) 26 11 Interest expense 3,220 2,569 9,710 7,664 Other expenses 451 473 2,279 1,145 Other income (149) (764) (561) (1,608) Underwriting income $ 107,063 $ 105,672 $ 307,009 $ 268,586 Other expenses includes primarily corporate expenses not allocated to the Company's insurance operations. Conference Call Kinsale Capital Group will hold a conference call to discuss this press release on Friday, October 23, 2026 at 9:00 a.m. (Eastern Time). Members of the public may access the conference call by dialing (833) 461-5787, conference ID# 796 079 082, or via the Internet by going to www.kinsalecapitalgroup.com and clicking on the "Investor Relations" link. A replay of the call will be available on the website. Forward-Looking Statements This press release contains forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. In some cases, such forward-looking statements may be identified by terms such as "anticipates," "estimates," "expects," "intends," "plans," "predicts," "projects," "believes," "seeks," "outlook," "future," "will," "would," "should," "could," "may," "can have," "prospects" or similar words. Forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from those in the forward-looking statements. Although it is not possible to identify all of these risks and factors, they include, among others, the following: inadequate loss reserves to cover the Company's actual losses; inherent uncertainty of models resulting in actual losses that are materially different than the Company's estimates; adverse economic factors; a decline in the Company's financial strength rating; loss of one or more key executives; loss of a group ofbrokers that generate significant portions of the Company's business; failure of any of the loss limitations or exclusions the Company employs, or change in other claims or coverage issues; adverse performance of the Company's investment portfolio; adverse market conditions that affect its excess and surplus lines insurance operations; and other risks described in the Company's filings with the Securities and Exchange Commission. These forward-looking statements speak only as of the date of (6) (6) 7
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this release and the Company does not undertake any obligation to update or revise any forward-looking information to reflect changes in assumptions, the occurrence of unanticipated events, or otherwise. About Kinsale Capital Group, Inc. Kinsale Capital Group, Inc. is a specialty insurance group headquartered in Richmond, Virginia, focusing on the excess and surplus lines market. Contact Kinsale Capital Group, Inc. Bryan Petrucelli Executive Vice President, Chief Financial Officer and Treasurer 804-289-1272 ir@kinsalecapitalgroup.com 8
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KINSALE CAPITAL GROUP, INC. AND SUBSIDIARIES Unaudited Consolidated Statements of Income and Comprehensive Income Three Months EndedSeptember 30, Nine Months EndedSeptember 30, 2026 2025 2026 2025 Revenues (in thousands, except per share data) Gross written premiums $ 462,868 $ 486,251 $ 1,472,494 $ 1,526,048 Ceded written premiums (63,724) (81,191) (217,605) (280,583) Net written premiums 399,144 405,060 1,254,889 1,245,465 Change in unearned premiums 24,328 5,897 (6,961) (85,105) Net earned premiums 423,472 410,957 1,247,928 1,160,360 Fee income 11,099 10,300 34,035 30,655 Net investment income 58,265 49,604 169,428 139,896 Change in the fair value of equity securities (37,769) 23,717 10,071 55,376 Net realized investment gains (losses) (419) 2,159 8,029 2,832 Change in allowance for credit losses on investments 1 4 (26) (11) Other income 149 764 561 1,608 Total revenues 454,798 497,505 1,470,026 1,390,716 Expenses Losses and loss adjustment expenses 232,079 227,162 698,120 677,497 Underwriting, acquisition and insurance expenses 95,429 88,423 276,834 244,932 Interest expense 3,220 2,569 9,710 7,664 Other expenses 451 473 2,279 1,145 Total expenses 331,179 318,627 986,943 931,238 Income before income taxes 123,619 178,878 483,083 459,478 Total income tax expense 25,490 37,232 96,526 94,484 Net income 98,129 141,646 386,557 364,994 Other comprehensive income (loss) Change in net unrealized losses on available-for-saleinvestments, net of taxes (112,944) 20,131 (156,468) 60,966 Total comprehensive income (loss) $ (14,815) $ 161,777 $ 230,089 $ 425,960 Earnings per share: Basic $ 4.36 $ 6.12 $ 17.00 $ 15.75 Diluted $ 4.36 $ 6.09 $ 16.97 $ 15.67 Weighted-average shares outstanding: Basic 22,490 23,159 22,740 23,168 Diluted 22,504 23,271 22,781 23,292 9
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KINSALE CAPITAL GROUP, INC. AND SUBSIDIARIES Unaudited Condensed Consolidated Balance Sheets September 30, 2026 December 31, 2025 Assets (in thousands) Investments: Fixed-maturity securities at fair value $ 4,497,325 $ 4,341,450 Equity securities at fair value 779,233 626,399 Real estate investments, net 54,614 55,236 Short-term investments — 3,864 Total investments 5,331,172 5,026,949 Cash and cash equivalents 160,508 163,361 Investment income due and accrued 33,012 30,971 Premiums receivable, net 119,608 124,593 Reinsurance recoverables, net 427,106 394,329 Ceded unearned premiums 39,803 44,506 Deferred policy acquisition costs, net of ceding commissions 122,169 118,737 Intangible assets 3,538 3,538 Deferred income tax asset, net 86,021 42,191 Other assets 108,166 94,386 Total assets $ 6,431,103 $ 6,043,561 Liabilities & Stockholders' Equity Liabilities: Reserves for unpaid losses and loss adjustment expenses $ 3,324,276 $ 2,890,870 Unearned premiums 862,652 860,394 Payable to reinsurers 25,260 34,385 Accounts payable and accrued expenses 53,685 66,301 Debt 224,604 224,397 Other liabilities 21,615 7,631 Total liabilities 4,512,092 4,083,978 Stockholders' equity 1,919,011 1,959,583 Total liabilities and stockholders' equity $ 6,431,103 $ 6,043,561 10