FERGUS FALLS, Minn.–(BUSINESS WIRE)–Otter Tail Corporation (Nasdaq: OTTR) today announced financial results for the quarter ended September 30, 2026. SUMMARY Produced quarterly diluted earnings per share of $1.41. Affirmed the midpoint of our annual earnings guidance and narrowed the range. CEO OVERVIEW “Our team members continue to deliver on our strategic growth plan and near-term priorities amidst a challenging operating environment,” said CEO Chuck MacFarlane. “Otter Tail Power continues