Otter Tail Corporation Announces Third Quarter Earnings, Increases Annual Earnings Guidance and Uplifts Long-Term Financial Targets Share FERGUS FALLS, Minn.--(BUSINESS WIRE)--Otter Tail Corporation (Nasdaq: OTTR) today announced financial results for the quarter ended September 30, 2025. SUMMARY Nov 3, 2025 6:00 PM Eastern Standard Time CEO OVERVIEW "We are pleased with our third quarter financial results,†said President and CEO Chuck MacFarlane. "Our team members continue to execute well on our growth pla ...