Risk factors

Ciena (CIEN) risk factors

Item 1A of every Ciena Corp. 10-K on file, and what changed from one year to the next. Readings are automated and can be wrong; check the filing for the exact wording.

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  • FY2025 10-K risk factors
    31 risks17 new26 dropped14 reworded

    Customer concentration is now quantified at 50% for the five largest customers, including 18% from one cloud provider and 11% from one service provider.

    Filed Dec 12, 2025
  • FY2024 10-K risk factors
    40 risks

    Customer concentration is material: the ten largest customers generated 57.9% of fiscal 2024 revenue.

    Filed Dec 20, 2024