Business Description

American Financial Group, Inc. (“AFG” or the “Company”) is an insurance holding company. Through the operations of Great American Insurance Group, AFG is engaged in property and casualty insurance, focusing on specialized commercial products for businesses. AFG’s in-house team of investment professionals oversees the Company’s investment portfolio. The members of the Great American Insurance Group have been in business for over 150 years. Management believes that over 55% of the 2025 gross written premiums in AFG’s Specialty property and casualty group are produced by businesses that rank in the “top 10” amongst competitors based on gross written premiums. AFG’s address is 301 East Fourth Street, Cincinnati, Ohio 45202; its phone number is (513) 579-2121. SEC filings, news releases, AFG’s Code of Ethics applicable to directors, officers and employees, AFG’s Corporate Social Responsibility Report and other information may be accessed free of charge through AFG’s website at: www.AFGinc.com. (Information on or accessible through AFG’s website is not part of this Form 10-K.) See Note C — “Segments of Operations” to the financial statements for information on AFG’s assets, revenues and earnings before income taxes by segment. 2 Table of Contents Top Tier Specialty Property and Casualty Insurer AFG allows each of its businesses the autonomy to make decisions related to underwriting, claims and policy servicing. This entrepreneurial business model promotes agility, innovative product design, unique applications of pricing segmentation, as well as developing distribution strategies and building relationships in the markets served. Management believes that AFG’s ability to grow book value per share at a double-digit annual rate over time is evidence that the Company’s culture, business model and employee incentive plans create a structure to build long-term value for AFG’s shareholders. As highlighted in the illustration below, over the past 25 plus years, AFG has sharpened its focus on the businesses that management knows best. This has been accomplished through organic growth, carefully selected acquisitions, start-ups and dispositions. 3 Table of Contents Timeline of Selected Start-ups, Acquisitions and Dispositions 4 Table of Contents Property and Casualty Insurance Segment General AFG’s property and casualty insurance operations provide a wide range of commercial coverages through 36 insurance businesses (at December 31, 2025) that make up the Great American Insurance Group. AFG’s property and casualty insurance operations ultimately report to a single senior executive and operate under a business model that allows local decision-making for underwriting, claims and policy servicing in each of the niche operations. Each business is managed by experienced professionals in particular lines or customer groups and operates autonomously but with certain central controls and accountability. The decentralized approach allows each unit the autonomy necessary to respond to local and specialty market conditions while capitalizing on the efficiencies of centralized investment and administrative support functions. AFG’s property and casualty insurance operations are conducted through the subsidiaries listed in the following table, which includes independent financial strength ratings and 2025 gross written premiums (in millions) for each subsidiary. These ratings are generally based on concerns for policyholders and agents and are not directed toward the protection of investors. AFG believes that maintaining a rating in the “A” category by A.M. Best is important to compete successfully in most lines of business. Ratings Gross Written Premiums AM Best S&P Insurance Group Great American Insurance A+ A+ $ 8,211 National Interstate A+ not rated 1,256 Summit (Bridgefield Casualty and Bridgefield Employers) A+ A+ 599 Republic Indemnity A+ A+ 188 Mid-Continent Casualty A+ A+ 206 Other 234 $ 10,694 The primary objectives of AFG’s property and casualty insurance operations are to achieve solid underwriting profitability and provide excellent service to its policyholders and agents. Underwriting profitability is measured by the combined ratio, which is a sum of the ratios of losses, loss adjustment expenses (“LAE”), underwriting expenses and policyholder dividends to premiums. A combined ratio under 100% indicates an underwriting profit.…