Hanover Insurance Group, Inc.

Year-to-date through September, we have increased our book value per share by 21.2%, even as we returned approximately $171 million to shareholders through dividends and share repurchases.

SEC original ↗Hanover Insurance Group, Inc. — Earnings release (8-K exhibit)EX-99Oct 29, 2025

Shareholders’ Equity and Capital Actions At September 30, 2025, book value per share was $96.00, up 7.1% from June 30, 2025, driven by strong earnings and an improvement in the unrealized loss position on the fixed maturity portfolio, partially offset by the ordinary quarterly cash dividend and share repurchases in the quarter.

SEC original ↗Hanover Insurance Group, Inc. — Earnings release (8-K exhibit)EX-99Oct 29, 2025

From the beginning of July through October 27, 2025, the company repurchased approximately 323,000 shares of common stock, totaling approximately $55 million, of which approximately 213,000 were purchased during the third quarter of 2025 for approximately $36 million, with the remaining balance purchased through a 10b5-1 plan during October.

SEC original ↗Hanover Insurance Group, Inc. — Earnings release (8-K exhibit)EX-99Oct 29, 2025

The company has approximately $210 million of remaining capacity under its existing share repurchase program.

SEC original ↗Hanover Insurance Group, Inc. — Earnings release (8-K exhibit)EX-99Oct 29, 2025

They are defined as net income excluding the after-tax impact of net realized and unrealized investment gains (losses), gains and/or losses on the repayment of debt, other non-operating items, and results from discontinued operations.

SEC original ↗Hanover Insurance Group, Inc. — Earnings release (8-K exhibit)EX-99Oct 29, 2025

Operating income also excludes net gains and losses from disposals of businesses, gains and losses related to the repayment of debt, costs to acquire businesses, restructuring costs, the cumulative effect of accounting changes, and certain other items.

SEC original ↗Hanover Insurance Group, Inc. — Earnings release (8-K exhibit)EX-99Oct 29, 2025

“Once again, our team put forth a very strong performance, not only achieving impressive financial results, but also affirming the effectiveness of our strategy and building on the positive momentum we’ve established across The Hanover,” said John C.

SEC original ↗Hanover Insurance Group, Inc. — Earnings release (8-K exhibit)EX-99Oct 29, 2025

Market dynamics in our chosen segments remain constructive, with consistent pricing gains in Core Commercial and Specialty thanks to our focus on smaller, less cyclical sectors, while in Personal Lines, our whole-account strategy provides good insulation from the competitive auto market.

SEC original ↗Hanover Insurance Group, Inc. — Earnings release (8-K exhibit)EX-99Oct 29, 2025

● Business owners’ policy/commercial multiple peril ● Commercial automobile ● Workers’ compensation ● Other (general liability, commercial umbrella, monoline property) Middle Market Coverage to mid-sized businesses with annual premiums starting at $50,000, focusing on those between $50,000 and $250,000.

SEC original ↗Hanover Insurance Group, Inc. — Earnings release (8-K exhibit)EX-99Oct 29, 2025

Additional Risks and Uncertainties Investors are further cautioned and should consider the risks and uncertainties in the company’s business that may affect such estimates and future performance that are discussed in the company’s most recently filed reports on Form 10-K and Form 10-Q and other documents filed by The Hanover Insurance Group, Inc.

SEC original ↗Hanover Insurance Group, Inc. — Earnings release (8-K exhibit)EX-99Oct 29, 2025

12 Investors should not place undue reliance on forward-looking statements, which speak only as of the date they are made and should understand the risks and uncertainties inherent in or particular to the company’s business.

SEC original ↗Hanover Insurance Group, Inc. — Earnings release (8-K exhibit)EX-99Oct 29, 2025