Ciena Corporation reported its financial results for the fourth quarter (Q4) and full fiscal year (FY) ended November 1, 2025. For Q4 FY 2025, revenue reached USD 1.35 billion, with adjusted gross margin at 43.4 percent and adjusted operating margin at 13.2 percent. Adjusted EBITDA for the quarter was USD 206 million, while adjusted earnings per share $(EPS)$ stood at USD 0.91. For the full fiscal year 2025, Ciena Corporation posted revenue of USD 4.77 billion, up 19 percent. Adjusted gross margin was 42.7 percent, with adjusted operating margin at 11.2 percent. Adjusted EBITDA totaled USD 637 million, and adjusted EPS was USD 2.64. Cash and investments at the end of Q4 FY 2025 amounted to USD 1.4 billion. Free cash flow for the quarter was USD 326 million. Non-telco revenue represented 55 percent of total revenue in Q4 FY 2025.