Net Income of $1.42 per Diluted Common Share and Non-GAAP Operating Income1 of $1.51 per

Return on Common Equity ("ROE") of 14.1% and Non-GAAP Operating ROE1 of 15.0%

In the third quarter of 2023:

•Net premiums written ("NPW") increased 17% compared to the third quarter of 2022;

•GAAP combined ratio was 96.8%, in line with the third quarter of 2022;

•Commercial Lines renewal pure price increases averaged 7.1%, compared to 5.8% in the third quarter of 2022;

•After-tax net investment income was $80 million, up 56% compared to the third quarter of 2022;

•Book value per common share was $40.35, down 1% in the third quarter; and

•Adjusted book value per common share¹ was $48.54, up 3% in the third quarter.

    

Branchville, NJ - November 1, 2023 - Selective Insurance Group, Inc. (NASDAQ: SIGI) reported financial results for the third quarter ended September 30, 2023, with net income per diluted common share of $1.42 and non-GAAP operating income1 per diluted common share of $1.51. The third quarter combined ratio was 96.8%, including 6.6 points of catastrophe losses.

In the quarter, NPW grew 17% compared to a year ago from renewal pure price increases, exposure growth, stable retention, and strong new business. After-tax net investment income in the quarter generated 13.1 points of annualized ROE, benefiting from higher interest rates, active portfolio management, and operating and investing cash flow deployment. Within our Insurance Operations, Standard Commercial Lines grew 15% and Excess and Surplus Lines increased 25% with profitable combined ratios. In Standard Personal Lines, initiatives to improve profitability continue to be executed as we transition to the mass affluent market.

"With a non-GAAP operating ROE of 15.0% in the quarter and 13.2% year to date, we are well positioned to achieve our 10th consecutive year of double-digit operating ROEs. Our disciplined underwriting strategy and commitment to uniquely servicing our customers continue to drive our performance in a challenging external environment with uncertain loss trends and elevated inflation," said John J. Marchioni, Chairman, President and Chief Executive Officer.

“We have a strong and flexible capital position and are actively focused on long-term, profitable growth. This includes continuing our deliberate growth strategy, with the expectation to extend our Commercial Lines footprint into West Virginia and Maine in early 2024, then Washington, Oregon, and Nevada later in the year,” added Mr. Marchioni.

Mr. Marchioni concluded, "Our unique, field-based operating model, deep distribution partner relationships, and sophisticated tools for risk selection, pricing, and claims management differentiate us in the marketplace. We have excellent prospects for continued strong performance." For the third quarter, overall NPW increased 17%, or $155 million, from a year ago, reflecting new business growth and effective management of our renewal portfolio.

Average renewal pure price increased 7.0%, with stable retention and increased exposure. Our 96.8% combined ratio in the quarter was in line with the 96.8% reported a year ago, with excellent improvement in our underlying combined ratio offset by higher catastrophe losses and no net prior year casualty reserve development. Catastrophe losses totaled $64.6 million pre-tax in the quarter, up from $34.1 million in the third quarter of 2022. There was no prior year casualty reserve development as workers compensation favorable development of $7.0 million was offset by unfavorable development of $4.0 million in commercial auto and $3.0 million in personal auto. In the third quarter of 2022, prior year favorable casualty reserve development totaled $16.0 million.

For the third quarter, Standard Commercial Lines premiums (representing 79% of total NPW) increased 15% compared to a year ago. The premium growth reflected average renewal pure price increases of 7.1%, new business growth of 13%, strong exposure growth, and consistent retention of 86%. The third quarter combined ratio was 94.7%, reflecting lower non-catastrophe property losses and an improved expense ratio compared to the prior period. The following table shows the variances relative to the 96.8% combined ratio a year ago:

For the third quarter, Standard Personal Lines premiums (representing 11% of total NPW) increased 30% compared to a year ago. Renewal pure price increases averaged 6.1%, retention was 88%, and new business was up $14.3 million compared to last year as we continued our transition to the mass affluent market. The third quarter combined ratio was 127.4%, including 25.6 points of catastrophe losses and 3.2 points of unfavorable casualty reserve development from the personal auto line of business. The following table shows the variances relative to the 101.8% combined ratio a year ago:

For the third quarter, Excess and Surplus Lines premiums (representing 10% of total NPW) increased 25% compared to the prior-year period, driven by average renewal pure price increases of 6.6% and new business growth of 43%. The third quarter combined ratio improved 9.1 points from a year ago to 83.9%, including 3.5 points of catastrophe losses. Both catastrophe and non-catastrophe property losses were lower than the same period last year. The following table shows the variances relative to the 93.0% combined ratio a year ago:

For the third quarter, after-tax net investment income of $80 million was 56% higher than the prior-year period. Pre-tax investment income from our fixed-income securities portfolio was up 32% compared to the third quarter of 2022, driven by higher book yields and the deployment of operating and investing cash flows over the past year. Pre-tax alternative investment income of $6 million was $12 million higher than the $6 million loss in the prior-year period. With the increased yield of our portfolio and invested assets per dollar of common stockholders' equity of $3.35 on September 30, 2023, the investment portfolio generated 13.1 points of non-GAAP operating ROE for the quarter.

During the first nine months of 2023, book value per common share increased by $1.78, or 5%. The increase was primarily driven by $3.83 of net income per diluted common share, partially offset by a $1.31 increase in after-tax net unrealized losses on our fixed income securities portfolio and $0.90 of dividends on our common stock paid to shareholders. The increase in after-tax net unrealized losses on our fixed-income portfolio was primarily driven by the rise in interest rates during the third quarter. Through the first nine months of 2023, the Company did not repurchase any shares of common stock. Capacity under our existing repurchase authorization was $84.2 million as of September 30, 2023.

Selective's Board of Directors declared:

•    A 17% increase in the quarterly cash dividend on common stock, to $0.35 per common share, that is payable December 1, 2023, to holders of record on November 15, 2023; and

•    A cash dividend of $287.50 per share on our 4.60% Non-Cumulative Preferred Stock, Series B (equivalent to $0.28750 per depositary share) payable on December 15, 2023, to holders of record as of November 30, 2023.

For 2023, our full-year expectations are as follows:

•A GAAP combined ratio of 96.5%, unchanged from last quarter, including net catastrophe losses of 6.5 points, up from prior guidance of 6.0 points. Our combined ratio estimate assumes no additional prior-year casualty reserve development;

•After-tax net investment income of $310 million, up from prior guidance of $300 million. After-tax net investment income includes $20 million of after-tax net investment income from our alternative investments, down from our $30 million prior guidance;

•An overall effective tax rate of approximately 21%, which assumes an effective tax rate of 20% for net investment income and 21% for all other items; and

•Weighted average shares of 61 million on a fully diluted basis.

The supplemental investor package, with financial information not included in this press release, is available on the Investors page of Selective’s website at www.Selective.com. Selective’s quarterly analyst conference call will be simulcast at 11:00 AM ET, on Thursday, November 2, 2023, on www.Selective.com. The webcast will be available for rebroadcast until the close of business on December 1, 2023.

Selective Insurance Group, Inc. (Nasdaq: SIGI) is a holding company for 10 property and casualty insurance companies rated "A+" (Superior) by AM Best. Through independent agents, the insurance companies offer standard and specialty insurance for commercial and personal risks and flood insurance through the National Flood Insurance Program's Write Your Own Program. Selective's unique position as both a leading insurance group and an employer of choice is recognized in a wide variety of awards and honors, including listing in Forbes Best Midsize Employers in 2023 and certification as a Great Place to Work® in 2023 for the fourth consecutive year. For more information about Selective, visit www.Selective.com.

1Reconciliation of Net Income Available to Common Stockholders to Non-GAAP Operating Income and Certain Other Non-GAAP Measures

Non-GAAP operating income, non-GAAP operating income per diluted common share, and non-GAAP operating return on common equity differ from net income available to common stockholders, net income available to common stockholders per diluted common share, and return on common equity, respectively, by the exclusion of after-tax net realized and unrealized gains and losses on investments included in net income. Adjusted book value per common share differs from book value per common share by excluding total after-tax unrealized gains and losses on investments included in accumulated other comprehensive (loss) income. These non-GAAP measures are used as important financial measures by management, analysts, and investors, because the timing of realized and unrealized investment gains and losses on securities in any given period is largely discretionary. In addition, net realized and unrealized gains and losses on investments could distort the analysis of trends. These operating measurements are not intended to be a substitute for net income available to common stockholders, net income available to common stockholders per diluted common share, return on common equity, and book value per common share prepared in accordance with U.S. generally accepted accounting principles (GAAP). Reconciliations of net income available to common stockholders, net income available to common stockholders per diluted common share, return on common equity, and book value per common share to non-GAAP operating income, non-GAAP operating income per diluted common share, non-GAAP operating return on common equity, and adjusted book value per common share, respectively, are provided in the tables below.

Note: All amounts included in this release exclude intercompany transactions.

Note: Amounts in the tables above may not foot due to rounding.

•Challenging conditions in the economy, global capital markets, the banking sector, and commercial real estate, including prolonged higher inflation, could increase loss costs and negatively impact investment portfolios;

•Deterioration in the public debt and equity markets and private investment marketplace that could lead to investment losses and interest rate fluctuations;

•Ratings downgrades on individual securities we own could affect investment values and, therefore, statutory surplus;

•The adequacy of our loss reserves and loss expense reserves;

•Frequency and severity of catastrophic events, including natural events that may be impacted by climate change, such as hurricanes, severe convective storms, tornadoes, windstorms, earthquakes, hail, severe winter weather, floods, and fires, and man-made events such as criminal and terrorist acts, including cyber-attacks, explosions, and civil unrest;

•Adverse market, governmental, regulatory, legal, or judicial conditions or actions;

•The significant geographic concentration of our business in the eastern portion of the United States;

•The cost, terms and conditions, and availability of reinsurance;

•Our ability to collect on reinsurance and the solvency of our reinsurers;

•The impact of changes in U.S. trade policies and imposition of tariffs on imports that may lead to higher than anticipated inflationary trends for our loss and loss expenses;

•Related to COVID-19:

•The ongoing Russian war against Ukraine is impacting global economic, banking, commodity, and financial markets, exacerbating ongoing economic challenges, including inflation and supply chain disruption, which influences insurance loss costs, premiums, and investment valuations;

•Uncertainties related to insurance premium rate increases and business retention;

•Changes in insurance regulations that impact our ability to write and/or cease writing insurance policies in one or more states;

•The effects of data privacy or cyber security laws and regulations on our operations;

•Major defect or failure in our internal controls or information technology and application systems that result in harm to our brand in the marketplace, increased senior executive focus on crisis and reputational management issues, and/or increased expenses, particularly if we experience a significant privacy breach;

•Potential tax or federal financial regulatory reform provisions that could pose certain risks to our operations;

•Our ability to maintain favorable financial ratings, which may include sustainability considerations, from rating agencies, including AM Best, Standard & Poor’s, Moody’s, and Fitch;

•Our entry into new markets and businesses; and

•Other risks and uncertainties we identify in filings with the United States Securities and Exchange Commission, including our Annual Report on Form 10-K and other periodic reports.

•Challenging conditions in the economy, global capital markets, the banking sector, and commercial real estate, including prolonged higher inflation, could increase loss costs and negatively impact investment portfolios;

•Deterioration in the public debt and equity markets and private investment marketplace that could lead to investment losses and interest rate fluctuations;

•Ratings downgrades on individual securities we own could affect investment values and, therefore, statutory surplus;

•The adequacy of our loss reserves and loss expense reserves;

•Frequency and severity of catastrophic events, including natural events that may be impacted by climate change, such as hurricanes, severe convective storms, tornadoes, windstorms, earthquakes, hail, severe winter weather, floods, and fires, and man-made events such as criminal and terrorist acts, including cyber-attacks, explosions, and civil unrest;

•Adverse market, governmental, regulatory, legal, or judicial conditions or actions;

•The significant geographic concentration of our business in the eastern portion of the United States;

•The cost, terms and conditions, and availability of reinsurance;

•Our ability to collect on reinsurance and the solvency of our reinsurers;

•The impact of changes in U.S. trade policies and imposition of tariffs on imports that may lead to higher than anticipated inflationary trends for our loss and loss expenses;

•Related to COVID-19:

•The ongoing Russian war against Ukraine is impacting global economic, banking, commodity, and financial markets, exacerbating ongoing economic challenges, including inflation and supply chain disruption, which influences insurance loss costs, premiums, and investment valuations;

•Uncertainties related to insurance premium rate increases and business retention;

•Changes in insurance regulations that impact our ability to write and/or cease writing insurance policies in one or more states;

•The effects of data privacy or cyber security laws and regulations on our operations;

•Major defect or failure in our internal controls or information technology and application systems that result in harm to our brand in the marketplace, increased senior executive focus on crisis and reputational management issues, and/or increased expenses, particularly if we experience a significant privacy breach;

•Potential tax or federal financial regulatory reform provisions that could pose certain risks to our operations;

•Our ability to maintain favorable financial ratings, which may include sustainability considerations, from rating agencies, including AM Best, Standard & Poor’s, Moody’s, and Fitch;

•Our entry into new markets and businesses; and

•Other risks and uncertainties we identify in filings with the United States Securities and Exchange Commission, including our Annual Report on Form 10-K and other periodic reports.