Exhibit 99.1 Donaldson Reports Record Fourth Quarter and Full-Year 2026 Sales and Earnings Fiscal 2027 Guidance Projects All-Time High Sales and EPS; Operating Margin Expansion Fourth Quarter Fiscal 2026 Highlights (All comparisons against the fourth quarter fiscal 2025 unless otherwise noted) Full Year Fiscal 2026 Highlights (All comparisons against fiscal year 2025 unless otherwise noted) Fiscal 2027 Guidance • Expect full year fiscal 2027 sales growth of between 5.5% and 9.5% and EPS between $4.22 to $4. ...