CIENCiena
We are a network technology company, providing hardware, software, and services to a wide range of network operators and enabling enhanced network capacity, service delivery, and automation. 10-K, Item 1
- Headquarters
- Hanover, MD
- CEO
- Gary B. Smith
- Next results
- around Dec 10, 2026
What the 10-K filed 2025-12-12 says about risks that are not on the face of the balance sheet, from the notes to the financial statements, Legal Proceedings and the MD&A (and, for big customers and key suppliers, Business and Risk Factors). Tickdelta picks sentences with specifics (amounts, accruals, covenant ratios) and quotes them as filed. New marks a sentence with nothing like it in the 10-K filed 2024-12-20.
Big customers
2 newCustomers the company names as a large share of revenue or receivables (it must name any worth 10% of revenue).
New “For example, in fiscal 2025, our five largest customers contributed approximately 50% of our revenue, a cloud provider customer accounted for approximately 18% of our revenue, and a service provider accounted for approximately 11% of our revenue.”
Read it in the 10-K ↗
“No other customer accounted for greater than 10% of our revenue in fiscal 2025 or fiscal 2024.”
Read it in the 10-K ↗
New “No other customer accounted for 10% or more of total revenue for the fiscal years presented.”
Read it in the 10-K ↗
“As of November 1, 2025, two customers accounted for 15.0% and 11.0% of net accounts receivable, respectively.”
Read it in the 10-K ↗
Key suppliers
Parts or manufacturing that depend on one or a few suppliers.
No specific sentence about this in the 10-K.
Lawsuits and legal claims
Pending cases, settlements and what the company has set aside for them.
“An estimated loss contingency is accrued when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated.”
Read it in the 10-K ↗
Guarantees and indemnities
Promises to pay someone else's debts or losses if they cannot.
No specific sentence about this in the 10-K.
Debt covenants
Conditions in loan agreements that, if broken, can make debt due early.
“As of November 1, 2025, Ciena was in compliance with the above financial maintenance covenants.”
Read it in the 10-K ↗
Commitments off the balance sheet
Contracts the company must pay for later: purchase obligations, take-or-pay deals.
No specific sentence about this in the 10-K.
Sentences are chosen by their words, not read by AI, so some can be off topic. Always check the filing. Open the 10-K ↗
Work on CIEN in a spreadsheet:
Excel workbook (a sheet per section, ten years by column, charts, links to the filings) ·
CSV.
For a Google Sheet that stays up to date, paste =IMPORTDATA("https://tickdelta.com/company/CIEN/export.csv") into a cell.