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Exhibit 99.1 SELECTIVE INSURANCE® Selective Reports Excellent Second Quarter 2021 Results , Including Net Income of $ 1.98 ] per Diluted Common Share , Annualized Return on Common Equity ( " ROE " ) of 18.3 % , Non - GAAP Operating Income of $ 1.85 per Diluted Common Share , and a Non - GAAP Operating ROE¹ of 17.1 % In the second quarter of 2021 , we reported : • • Net premiums written ( " NPW " ) increased 15 % compared to the second quarter of 2020 ; GAAP combined ratio of 89.8 % ; • • After - tax net investment income of $ 67 million , up 136 % compared to the second quarter of 2020 ; and Book value per common share of $ 44.78 per Branchville , NJ - July 28 , 2021 - Selective Insurance Group , Inc. ( NASDAQ : SIGI ) today reported financial results for the second quarter ended June 30 , 2021 , with net income per diluted common share of $ 1.98 and non - GAAP operating income¹ diluted common share of $ 1.85 . The annualized non - GAAP operating ROE was 17.1 % for the quarter and 16.4 % for the first half of the year . The second quarter combined ratio was a solid 89.8 % , with all insurance segments delivering profitable results . Overall NPW increased 15 % from a year ago during the second quarter , driven by strong new business growth of 16 % , renewal pure price increases of 5.1 % , and continued solid retention . The Investments segment contributed 10.3 points of annualized ROE , led by alternative investment returns . " Selective again reported excellent financial results , driven by superior underwriting and investment performance . Our capital position is the strongest in our history . I am proud of our standout execution in delivering disciplined and profitable growth . By focusing on customer service and operational excellence , and delivering value to our various stakeholders , we have built a unique franchise and culture . As we look to the remainder of 2021 , I remain confident about our ability to continue to generate consistent long - term financial outperformance , ” said John Marchioni , President and CEO . Operating Highlights Consolidated Financial Results Quarter ended June 30 , $ and shares in millions , except per share data 2021 2020 Change Year - to - Date June 30 , 2021 Net premiums written $ 833.2 724.8 15 % $ 1,631.4 2020 1,372.1 Change 19 % Net premiums earned 740.5 630.7 17 1,465.5 1,282.4 14 Net investment income earned 83.7 34.4 143 153.4 90.4 70 Net realized and unrealized gains ( losses ) , pre - tax 10.1 12.6 ( 20 ) 15.2 ( 32.0 ) ( 147 ) Total revenues 840.5 682.4 23 1,644.4 1,347.3 22 Net underwriting income , after - tax 60.0 7.8 669 121.3 24.7 392 Net investment income , after - tax 67.4 28.5 136 123.8 74.0 67 Net income available to common stockholders 119.6 34.2 250 226.4 49.4 358 Non - GAAP operating income¹ 111.6 24.2 362 214.4 74.7 187 Combined ratio 89.8 % 98.4 ( 8.6 ) pts 89.5 % 97.6 ( 8.1 ) pts Loss and loss expense ratio 56.9 64.0 ( 7.1 ) 56.9 62.8 ( 5.9 ) Underwriting expense ratio Dividends to policyholders ratio 32.7 34.3 ( 1.6 ) 32.4 34.7 ( 2.3 ) 0.2 0.1 0.1 0.2 0.1 0.1 Catastrophe losses 3.1 pts 13.2 ( 10.1 ) 3.6 pts 9.1 ( 5.5 ) Non - catastrophe property losses and loss expenses 14.5 13.0 1.5 15.2 14.8 0.4 ( Favorable ) prior year reserve development on casualty lines ( 2.3 ) ( 2.4 ) 0.1 ( 3.5 ) ( 1.9 ) ( 1.6 ) Net income available to common stockholders per diluted common share $ 1.98 0.57 247 % $ 3.74 0.82 356 % Non - GAAP operating income per diluted common share Weighted average diluted common shares 1.85 0.40 363 3.54 1.24 185 60.5 60.2 60.5 60.2 Book value per common share $ 44.78 38.43 17 44.78 38.43 17 1