Ciena Corporation

Customer and revenue · Customer concentration and key customer dependence

A significant portion of our revenue is concentrated among a small number of customers. 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.

Strategic execution · Strategic transformation and turnaround risks

We have taken, and may in the future engage in, steps to reduce the cost of our operations, improve efficiencies, or realign our organization to better match our market opportunities and our business strategy, including reductions in force, office closures, and internal reorganizations. These changes could be disruptive to our business and could result in significant expense.

Market position and competition · Market cyclicality and demand volatility

Our results of operations are subject to significant, and often difficult to predict, quarterly fluctuations due to a variety of factors. A portion of our quarterly revenue is generated from customer orders received during that same quarter (which we refer to as 'book to revenue') and therefore may be less certain.

Innovation and product development · Time to market and commercialization risks

The success of our business depends on our ability to develop and deliver products that align with customer needs and demands, technological advancements, and market trends. There is often a lengthy period between commencing development and bringing these solutions to market. Accordingly, there is no guarantee of market acceptance, and some of our development decisions will be unprofitable.

Strategic execution · Merger acquisition and divestiture risks

We may pursue strategic transactions, including mergers, acquisitions, investments and other strategic partnerships, to advance our business strategy. These transactions inherently involve significant risks and uncertainties, including: failure to achieve the intended benefits or anticipated return on investment, including operational synergies; significant use of cash, assumption of debt, or dilution of stockholders.

Innovation and product development · Intellectual property protection and infringement

We rely on a combination of patents, copyrights, trademarks and trade secret laws to establish and maintain proprietary rights in our products and technology. There can be no assurance that our proprietary rights will not be challenged, invalidated or circumvented. Protecting our proprietary rights is difficult, time-consuming and expensive.

Supply chain and procurement · Supplier operation and dependance

We rely on third-party manufacturers, including those with facilities in Canada, Mexico, Thailand, Vietnam and the United States, to perform many of our critical supply chain activities. There are a number of risks associated with our dependence on these manufacturers, including: constraints in their manufacturing capacity and other operational challenges; logistics disruption and reduced control over delivery schedules and planning.

Human capital and workforce · Talent acquisition and retention

Our future success depends upon our ability to recruit and retain qualified people, particularly in talent segments critical to the execution of our business strategy. Competition to attract and retain highly skilled technical, engineering and other personnel with experience in our industry is intense, and our employees have been the subject of targeted hiring by our competitors.

Digital transformation and innovation · Artificial intelligence and automation

Our development and use of AI technology in our products and operations remains in the early phases. While we aim to develop and use AI responsibly and attempt to mitigate ethical and legal issues presented by its use, we may ultimately be unsuccessful in identifying or resolving issues before they arise. AI technology is subject to rapidly evolving domestic and international laws and regulations, including executive orders by the U.S. government and the EU's Artificial Intelligence Act.

Cybersecurity and data protection · Third party data security and vendors

Our network environment and assets, and those of our third-party business partners, maintain information that is confidential, regulated, proprietary or sensitive to our business. The frequency and sophistication of cybersecurity events globally continues to increase, including through the use of AI, with companies in our industry particularly targeted given the nature of the products that we sell.

Geopolitical and trade · International conflicts and tensions

Our global operations and supply chain expose us to risks associated with geopolitical developments, including instability or disruption in particular region, war, terrorism, riot, civil insurrection, and social or political unrest. Increasing tensions between the United States and China—including tariffs, export controls, investment restrictions, and evolving data security or technology transfer requirements—could disrupt our supply chain.

Geopolitical and trade · Trade policies tariffs and sanctions

Significant changes to trade policy, international trade agreements, export controls, sanctions, or tariffs have adversely impacted and could materially adversely impact our business, operations, and financial results. Our revenue is concentrated, with approximately 72% of our revenue in fiscal 2025 coming from the United States. Tariffs recently implemented that have impacted or could materially impact our business include tariffs on U.S. imports from Canada and Mexico, of steel, aluminum, and copper, and from China.

Economic and market conditions · Market volatility and financial crises

Volatility and uncertainty in the capital markets could limit our access to funding on favorable terms or at all. Our ability to access capital, and the cost of that capital, can be affected by a range of factors, including market conditions, interest rates, inflation, and ratings agency evaluation of our company.

International and currency · International operations and emerging markets

Our global operations are subject to complex U.S. and foreign laws and regulations, including trade controls, anti-corruption laws, antitrust regulations, sovereignty and localization requirements, and environmental and sustainability regulations. Compliance with these laws may impose significant costs, and violations could result in fines, penalties, criminal sanctions, restrictions on our operations, and harm to our reputation.

Market and investment · Asset valuation and impairment

We have a number of assets on our balance sheet with significant values that can be adversely impacted by factors related to our business and operating performance, as well as factors outside of our control, including that: the value of receivables may be impacted by difficulty collecting amounts owed by customers, suppliers or partners due to their financial conditions; the value of goodwill or our long-lived assets may be impaired if market conditions for our business change.

Credit and liquidity · Debt service and covenant compliance

We are a party to credit agreements governing a revolving credit facility, a term loan, and unsecured senior notes. Our indebtedness could have important negative consequences, including: increasing our vulnerability to adverse economic and industry conditions; limiting our ability to obtain additional financing; debt service and repayment obligations that may reduce the availability of cash resources.

Market and investment · Market volatility and economic cycles

Our business and operating results depend significantly on general market and economic conditions. The current global macroeconomic environment is volatile and can be adversely impacted by exchange rates, interest rates, inflation, public health emergencies, natural disasters and geopolitical trends adversely impacting customer spending, global supply chains, and component costs.

Data and privacy · Data protection and privacy laws

We operate in a regulatory environment that is rapidly evolving with respect to product security, cybersecurity, and the collection, use, and retention of data. Governments around the world continue to adopt new, and expand existing, laws and regulations imposing heightened requirements on companies related to these topics.

Tax and financial reporting · Tax compliance and changes in tax law

We are subject to complex, evolving, and sometimes conflicting tax laws and regulations in the jurisdictions where we operate. Changes in tax legislation, interpretations, or enforcement practices, including those related to global minimum tax regimes, transfer pricing, or the allocation of profits among countries, could increase our effective tax rate, result in additional tax liabilities, or impact our profitability.

Legal and litigation · Litigation and legal proceedings

We are, from time to time, subject to claims, lawsuits, government investigations, and other legal proceedings that may arise in the ordinary course of business. These matters can be complex, involve uncertain outcomes, and require significant management time and resources.