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Exhibit 99.1 SELECTIVE INSURANCE® Selective Reports Solid Third Quarter 2021 Results , Including Net Income of $ 1.18 per Diluted Common Share , Annualized Return on Common Equity ( " ROE " ) of 10.6 % , Non - GAAP Operating Income¹ of $ 1.18 ] per Diluted Common Share , and a Non - GAAP Operating ROE¹ of 10.6 % ; Quarterly Dividend Increased 12 % , to $ 0.28 per share In the third quarter of 2021 , we reported : • • Net premiums written ( " NPW " ) increased 13 % compared to the third quarter of 2020 ; GAAP combined ratio of 98.6 % ; • After - tax net investment income of $ 75 million , up 35 % compared to the third quarter of 2020 ; and • Book value per common share of $ 45.27 , up 1 % in the third quarter . per Branchville , NJ - October 27 , 2021 - Selective Insurance Group , Inc. ( NASDAQ : SIGI ) reported financial results for the third quarter ended September 30 , 2021 , with net income per diluted common share of $ 1.18 . Non - GAAP operating income ' diluted common share was also $ 1.18 . The third quarter combined ratio was a profitable 98.6 % , despite $ 76 million of net catastrophe losses , or 10.0 points on the combined ratio . Hurricane Ida accounted for $ 43 million of net catastrophe losses , with a number of other events accounting for the remainder . Overall NPW increased 13 % from a year ago , driven primarily by continued renewal pure price increases , solid retention rates , and strong new business growth . The Investments segment contributed 11.0 points of annualized ROE , principally due to exceptionally strong alternative investment returns . " We generated profitable underwriting results and delivered a solid ROE in the third quarter despite elevated catastrophe losses for the industry and Selective . Our 14.5 % non - GAAP operating ROE for the first nine months builds on our seven - year track record of double - digit operating ROES . I am proud of our strong and consistent operating performance and the strength of our balance sheet and capital position . We are well - positioned , with high - quality distribution partner relationships and superior underwriting capabilities , as we look ahead to 2022 , " said John Marchioni , President and CEO . Operating Highlights Consolidated Financial Results Quarter ended September 30 , $ and shares in millions , except per share data 2021 2020 Change Year - to - Date September 30 , 2021 Net premiums written $ 812.9 719.5 13 % $ 2,444.3 Net premiums earned 767.2 694.5 10 2,232.7 2020 2,091.6 1,976.9 Change 17 % 13 Net investment income earned 93.0 68.2 36 246.5 158.6 55 Net realized and unrealized gains ( losses ) , pre - tax 0.2 7.7 ( 98 ) 15.4 ( 24.3 ) ( 163 ) Total revenues 865.0 776.6 11 2,509.5 2,123.8 18 Net underwriting income , after - tax 8.6 16.6 ( 48 ) 130.0 41.3 215 Net investment income , after - tax 74.7 55.1 35 198.5 129.2 54 Net income available to common stockholders 71.4 69.9 2 297.8 119.3 150 Non - GAAP operating income¹ 71.3 63.8 12 285.7 138.5 106 Combined ratio 98.6 % 97.0 1.6 pts 92.6 % 97.4 ( 4.8 ) pts Loss and loss expense ratio 65.9 64.5 1.4 60.0 63.4 ( 3.4 ) Underwriting expense ratio Dividends to policyholders ratio 32.6 32.4 0.2 32.4 33.9 ( 1.5 ) 0.1 0.1 - 0.2 0.1 0.1 Net catastrophe losses 10.0 pts 11.4 ( 1.4 ) 5.8 pts 9.9 ( 4.1 ) Non - catastrophe property losses and loss expenses 16.1 15.2 0.9 15.5 14.9 0.6 ( Favorable ) prior year reserve development on casualty lines ( 1.8 ) ( 3.6 ) 1.8 ( 3.0 ) ( 2.5 ) ( 0.5 ) Net income available to common stockholders per diluted common share $ 1.18 1.16 2 % $ 4.92 1.98 148 % Non - GAAP operating income per diluted common share¹ 1.18 1.06 11 4.72 2.30 105 Weighted average diluted common shares 60.6 60.4 - 60.5 60.3 Book value per common share $ 45.27 40.00 13 45.27 40.00 113 1