Selective Insurance Group Inc. Fourth Quarter 2024 Investor Presentation

34th largest P&C carrier in the United

States*

$4.6 billion of net premiums written in 2024

NASDAQ: SIGI (common stock)

NASDAQ: SIGIP (preferred)

Investor.Relations@Selective.com

Our unique operating model

that places empowered decision-makers alongside our customers and distribution partners

Our ability to develop and integrate sophisticated tools that our front-line employees use to inform risk selection, pricing, and claims decisions

Our franchise value

distribution model, defined by meaningful and close business relationships with a group ofhigh-qualitydistribution partners

Our commitment to delivering

1. superior omni-channel customer experience, enhanced by people and technology

Our highly engaged and

aligned team of extremely talented employees

DIFFERENTIATED OPERATING MODEL

2024 NET PREMIUMS WRITTEN

Everyone with Selective makes our customers feel like the #1 priority.

The ease of working with Selective is unmatched.

- Selective Agent

NON-GAAP OPERATING ROE

7.1%

10%

5%

SIGI 10-Year Average: 11.9%

Peer 10-Year Average: 8.4%

0%

Note: Peer Average includes CINF, CNA, HIG, THG, TRV, and UFCS; 2024 Peer based off 9M24 data

Generating ROEs exceeding our cost of capital and peer group average over time

100 basis points of combined ratio translates to ~120 basis points of ROE*

100 basis points of pre-tax investment yield translates to ~260 basis points of ROE*

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NET PREMIUMS WRITTEN

COMBINED RATIO

105%

100%

103.0%

2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

95.8%

95%

95.2%

*Compound annual growth rate

With current market share of ~1.5% in Commercial Lines, Selective

has meaningful runway to deliver above-industry growth

STANDARD COMMERCIAL LINES

Targeting 3% market share in existing footprint over the long-term

1. Targeting 12% share of wallet target with existing distribution partners

1. Targeting 25% agent market share target in existing markets

Disciplined approach to geographic expansion

1. Added thirteen states to our Standard Commercial Lines footprint since 2017

1. Goal of operating our Standard Commercial Lines business with a near national footprint; operating model will vary depending on the market

STANDARD PERSONAL LINES

Transition to mass-affluent well underway

Focusing where we believe our strong coverage and servicing capabilities will be more competitive

Better aligns our organizational capabilities with a market where we believe we can succeed over the long term

STANDARD COMMERCIAL LINES FOOTPRINT

Core Footprint prior to 2017

Expansion States since 2017

Targeted Expansion States*

EXCESS AND SURPLUS LINES

Opportunistic, profitable growth strategy

Expansion of capabilities and products

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