Selective Insurance Group Inc. Second Quarter 2024 Investor Presentation

2nd QUARTER 2024

INVESTOR PRESENTATION

Copyright © 2024 by Selective Insurance. All rights reserved.

Safe Harbor Statement

We make certain statements and reference other information in this presentation that are "forward-looking statements" as defined in the Private Securities Litigation Reform Act of 1995 ("PSLRA"). The PSLRA provides a forward-looking statement

safe harbor under the Securities Act of 1933 and the Securities Exchange Act of 1934. These statements discuss our intentions, beliefs, projections, estimations, or forecasts of future events and financial performance. They involve known and unknown risks, uncertainties, and other factors that may cause our or our industry's actual results, activity levels, or performance to materially differ from those in or implied by the forward-looking statements

We discuss factors that could cause our actual results to differ materially from those we project, forecast, or estimate in forward-looking statements in further detail in Selective's public filings with the United States Securities and Exchange Commission. We undertake no obligation to publicly update or revise any forward-looking statements - whether as a result of new information, future events or otherwise - other than as the federal securities laws may require.

This presentation also includes certain non-GAAP financial measures within the meaning of Regulation G, including "non- GAAP operating earnings per share," "non-GAAP operating income," "non-GAAP operating retuon equity," and "adjusted

book value per share." Definitions of these non-GAAP measures and a reconciliation to the most comparable GAAP figures are available in our Annual Report on Form 10-K and our Supplemental Investor Package, both found on our website <www.selective.com> under "Investors/Reports & Earnings." We believe investors and other interested persons find these measurements helpful, as they provide a consistent basis for comparing our results between quarters and with our industry competitors. These non-GAAP measures, however, may not be comparable to similarly titled measures used outside of the insurance industry. Investors are cautioned not to unduly rely on these non-GAAP measures in assessing our overall financial performance.

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INTRODUCTION

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Every day, our interactions with our customers and

distribution partners reinforce the importance of our role in rebuilding lives and businesses, making communities safer, and supporting economic expansion.

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A Leader in U.S. Property & Casualty Insurance

Superior track record driven by disciplined execution

10 consecutive years of double-digit Operating Retuon Equity

A+ (Superior) rating by A.M. Best

$4.1 billion of net premiums written in 2023

37th largest P&C carrier in the United Stated States*

Clear path for continued, profitable growth

Our success is based on a unique combination of competitive advantages. Taken together, they create a winning formula for Selective.

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Differentiated Operating Model

"Everyone with Selective makes our customers feel like the #1 priority. The ease of working with Selective is unmatched." - Selective Agent

2023 Net Premiums Written

11%

Excess and

Surplus Lines

10%

Standard

Personal

Lines

$4

Billion

79%

Standard

Commercial

Lines

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Ten Consecutive Years of Double-DigitNon-GAAP Operating ROEs

Non-GAAP Operating ROE

Excellent Operating Results with Low Historical Volatility

Track Record of Disciplined, Profitable Growth

With current market share of ~1% in Commercial Lines, Selective

has meaningful runway to deliver above-industry growth