Alleghany 2021 Full Year Performance Highlights

CapSpecialty Gross Premiums Written (FY 2021) Surety 13% Binding Authority 11% Excess Casualty 7% Professional Liability 23% Specialty Casualty 26% $475 million Healthcare 20% ◉ Business Overview Well-diversified specialty company Focused on small and mid-size businesses Recognized experts in select classes Select distribution Current focus on profitable growth, expense management & technology optimization Exited certain unprofitable lines of business and producer relationships (Property, Binding Authority) FY 2021 Highlights Gross premiums written up 15.5% Combined ratio of 99.4%; 1.6 pts. improvement in expense ratio Fifth consecutive quarter with underwriting profit Focused on Excess and Surplus Lines Casualty Business for Small and Mid-Sized Businesses 24

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