Ciena (NYSE:CIEN) Q4 2025 Earnings Call December 11, 2025 08:30 AM ET Speaker4Good morning and welcome to Ciena's Fiscal Fourth Quarter and Year-End 2025 Financial Results Conference Call. All participants will be in listen-only mode. Should you need assistance, please signal a conference specialist by pressing star then zero on your telephone keypad. After today's presentation, there will be an opportunity to ask questions. To ask a question, you may press star then one on your telephone keypad. To withdra ...