FERGUS FALLS, Minn.–(BUSINESS WIRE)–Otter Tail Corporation (Nasdaq: OTTR) today announced financial results for the quarter and year ended December 31, 2025. SUMMARY Produced annual diluted earnings per share of $6.55. Achieved a consolidated return on equity of 16% on an equity ratio of 63%. Initiated 2026 diluted earnings per share guidance range of $5.22 to $5.62, a return on equity projection of 12% at the midpoint. CEO OVERVIEW “We are pleased with our 2025 financial results as they exce