Business overview
Business Overview 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. Our solutions support network traffic across a wide range of applications, including cloud, voice, video, data, and artificial intelligence (“AI”). Our network solutions are used globally by cloud providers, service providers, and other network operators across multiple industry verticals. Our Networking Platforms, including our Optical Networking portfolio and Routing and Switching portfolio, are solutions applied from the network core to end user access points and allow network operators to scale capacity, increase transmission speeds, allocate traffic efficiently, and adapt dynamically to changing end-user service demands.
Complementing our Networking Platforms, we offer Platform Software, which delivers multi-layer domain control and operations for network operators, and Blue Planet ® Automation Software, which enables service lifecycle management automation with productized operational support systems (“OSS”) across domains and vendors. In addition to our hardware and software, we offer a broad range of complementary services that help our customers build, operate, and transform their networks and associated operational environments. Industry and Market Customers We sell our product and service solutions through direct and indirect sales channels to the following customer and market segments: 4 • Cloud Providers. Our cloud provider customers – also referred to in our markets as web-scale, hyper-scale or neo-scale providers – include internet content providers and providers of internet services and infrastructure, including data centers, cloud compute, Software as a Service (“SaaS”), storage, AI, and web hosting services.
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In addition to their direct purchases, these customers have also been significant purchasers of capacity on service provider submarine and wireline networks globally, and have heavily influenced networking solution demand and technology and architecture adopted by service providers. • Service Providers. Our communications service provider (“service provider”) customers include regional, metro, national and international wireline and wireless carriers, submarine network operators, and access network providers. In recent years, service providers have offered managed optical fiber networks (MOFN) arrangements to cloud providers who, driven by the need to add capacity quickly and to address restrictions in some jurisdictions on fiber ownership, lease or otherwise acquire dedicated, high-performance connectivity without needing to manage the physical infrastructure themselves.
• Other Customers. Our customers also include cable and multiservice operators (MSOs), governments, research and education network operators, and enterprises. Market Dynamics Demand for Increased Capacity The markets into which we sell are dynamic and characterized by a high rate of change. Networks continue to experience strong demand for increased bandwidth due to traffic growth, primarily driven by the impact of AI on networks. Impact of AI on Networks . Unprecedented AI workloads are driving substantial changes in how compute and networking infrastructure are designed and operated, and creating greater demands for high-speed connectivity.
Training large-scale AI and foundation models requires massive, coupled GPU clusters that require immense bandwidth, low latency, and power efficiency. These growing demands are influencing data center locations and contributing to greater geographic distribution of training workloads. At the same time, the need to monetize AI infrastructure investment and deploy models at scale is making inferencing a primary driver of low-latency, high-capacity networking investment across regions and edge locations, closer to end users. Collectively, these trends are accelerating demand for high bandwidth, low-latency and energy-efficient network solutions in and around data centers and across the wide area network. Other services, technologies, and customer needs driving demand for increased bandwidth include: • Network Densification .
In recent years there has been a shift in bandwidth demands, traffic patterns, and computing functions to the edge of networks. Wireline service providers are responding to similar service and end customer demands by extending fiber to the home and deeper into access networks. With a higher percentage of data flows concentrating closer to the network edge, more capacity and higher bandwidth to home and enterprise locations are required. • Cloud-Based Services. Enterprises and consumers continue to replace locally-housed computing and storage by adopting a broad array of innovative cloud-based models – including Platform as a Service (PaaS), SaaS and Infrastructure as a Service (IaaS) – and an expanding range of cloud-based services that host key applications, store data, enable the viewing and downloading of content, and utilize on-demand computing resources.
In addition, content is increasingly moving to the network edge, creating capacity and traffic demands closer to the user. • Mobile Traffic. […]
Source: 10-K · Period ended November 1, 2025 · View report
Latest developments
Recent company filings, newest first. Excerpts retain the original wording.
September 3, 2026Results8-K
Results of operations and financial condition
Original filing excerpt · Item 2.02
Results of Operations and Financial Condition. On September 3, 2026, Ciena Corporation ("Ciena") issued a press release announcing its financial results for its fiscal third quarter ended August 1, 2026. The text of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K (this "Report"). As discussed in the press release, Ciena will be hosting an investor call to discuss its results of operations for its fiscal third quarter ended August 1, 2026. In conjunction with the issuance of this press release, Ciena posted to the quarterly results page of the "Investors" section of www.ciena.com an accompanying investor presentation. The investor presentation is furnished as Exhibit 99.2 to this Report.
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The information in Exhibits 99.1 and 99.2, as well as
of this Report, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, and shall not be incorporated by reference into any registration statement pursuant to the Securities Act of 1933, as amended. Investors are encouraged to review the “Investors” page of our website at www.ciena.com because, as with the other disclosure channels that we use, from time to time we may post material information exclusively on that site.
June 11, 2026Contracts8-K
Entry into a material agreement
Original filing excerpt · Item 1.01, 2.03, 3.02, 8.01
ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT Indenture and Notes On June 11, 2026, Ciena Corporation (the “Company”) closed its previously announced private offering (the “Offering”) of $2.875 billion aggregate principal amount of the Company’s 0.00% Convertible Senior Notes due 2031 (the “Notes”), which includes $375.0 million aggregate principal amount of Notes issued in connection with the initial purchasers’ full exercise of their option to acquire additional Notes, pursuant to an indenture, dated June 11, 2026 (the “Indenture”), among the Company, the guarantors named therein and U.S. Bank Trust Company, National Association, as trustee. The Notes are fully and unconditionally guaranteed, on a senior unsecured basis, by each wholly-owned domestic subsidiary of the Company that currently or in the future guarantees its 4.00% senior notes due 2030 or any refinancing of such notes.
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The Notes will not bear regular interest and the principal amount of the Notes will not accrete. The Notes will mature on September 15, 2031 unless earlier converted, redeemed or repurchased. The initial conversion rate for the Notes is 1.3393 shares of the Company’s common stock per $1,000 principal amount of Notes (equivalent to an initial conversion price of approximately $746.66 per share of the Company’s common stock), subject to adjustment. […]
CREATION OF A DIRECT FINANCIAL OBLIGATION OR AN OBLIGATION UNDER AN OFF-BALANCE SHEET ARRANGEMENT OF A REGISTRANT The information set forth in
UNREGISTERED SALE OF EQUITY SECURITIES The information set forth in
The Company sold the Notes to the initial purchasers in reliance on the exemption from registration provided by Section 4(a)(2) of the Securities Act of 1933, as amended (the “Securities Act”), and for resale by the initial purchasers to persons reasonably believed to be qualified institutional buyers pursuant to the exemption from registration provided by Rule 144A under the Securities Act. The Notes and the common stock issuable upon the exchange of the Notes, if any, will not be registered under the Securities Act or the securities laws of any other jurisdiction and may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements of the Securities Act and applicable state laws.
The Company sold the warrants comprising the warrant transactions described above to the option counterparties in reliance on the exemption from registration provided by Section 4(a)(2) of the Securities Act. The warrants and the shares of the common stock issuable upon exercise of the warrants, if any, have not been registered under the Securities Act and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements. […]
OTHER EVENTS On June 8, 2026, the Company issued a press release announcing the pricing of the Offering. A copy of the press release is attached hereto as Exhibit 99.1 Cautionary Note Regarding Forward-Looking Statements This Current Report on Form 8-K contains certain forward-looking statements that are based on the Company’s current expectations, forecasts, information and assumptions. These statements involve inherent risks and uncertainties. Actual results or outcomes may differ materially from those stated or implied, because of risks and uncertainties, including those detailed in the Company’s most recent annual and quarterly reports filed with the SEC. Forward-looking statements include statements regarding the Company’s expectations, beliefs, intentions or strategies and can be identified by words such as “anticipate,” “believe,” “could,” “estimate,” “expect,” “intend,” “may,” “should,” “will,” and “would” or similar words.
The Company assumes no obligation to update the information included in Current Report on Form 8-K, whether as a result of new information, future events or otherwise. These forward-looking statements include, among others, statements regarding the Offering and the use of proceeds therefrom and statements regarding the expected effects of entering into the convertible note hedge and warrant transactions.
June 8, 2026Company update8-K
Other events
Original filing excerpt · Item 8.01
OTHER EVENTS Convertible Notes Offering On June 8, 2026, Ciena Corporation (the “Company”) issued a press release announcing its intention to offer (the “Offering”) $2.0 billion aggregate principal amount of convertible senior notes due 2031 (the “Notes”) in a private placement to persons reasonably believed to be qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”). The Notes will be fully and unconditionally guaranteed, on a senior unsecured basis, by each wholly-owned domestic subsidiary of the Company that currently or in the future guarantees its 4.00% senior notes due 2030 or any refinancing of such notes. The Company also intends to grant the initial purchasers of the Notes an option to purchase up to an additional $300.0 million aggregate principal amount of the Notes within a 13-day period beginning on, and including, the initial closing date of the Offering.
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Accordingly, the Notes will not be registered under the Securities Act and the Notes may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements of the Securities Act. In connection with the pricing of the Notes, the Company expects to enter into convertible note hedge transactions with one or more of the initial purchasers of the Notes or affiliates thereof and/or other financial institutions (the “option counterparties”). […]
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June 4, 2026Results8-K
Results of operations and financial condition
Original filing excerpt · Item 2.02
Results of Operations and Financial Condition. On June 4, 2026, Ciena Corporation ("Ciena") issued a press release announcing its financial results for its fiscal second quarter ended May 2, 2026. The text of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K (this "Report"). As discussed in the press release, Ciena will be hosting an investor call to discuss its results of operations for its fiscal second quarter ended May 2, 2026. In conjunction with the issuance of this press release, Ciena posted to the quarterly results page of the "Investors" section of www.ciena.com an accompanying investor presentation. The investor presentation is furnished as Exhibit 99.2 to this Report.
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The information in Exhibits 99.1 and 99.2, as well as
of this Report, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, and shall not be incorporated by reference into any registration statement pursuant to the Securities Act of 1933, as amended. Investors are encouraged to review the “Investors” page of our website at www.ciena.com because, as with the other disclosure channels that we use, from time to time we may post material information exclusively on that site.
Latest results
Original excerpts. Reporting periods, units and comparisons are retained in the text.
Revenue
Business Momentum Our industry has been experiencing unprecedented increases in demand, in particular due to capital expenditures related to AI and other cloud-based applications. As a result, we experienced strong momentum and growth in fiscal 2025 that continued in the first three quarters of fiscal 2026. As our sales to cloud providers grow, we are seeing a small number of those customers become a larger portion of our business across multiple revenue segments. Our revenue increased by 37% to $1.7 billion in the third quarter of fiscal 2026 as compared to $1.2 billion in the third quarter of fiscal 2025, with orders for our products and services significantly exceeding our revenue.
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Consolidated Results of Operations 29 Operating Segments Our results of operations are presented based on our operating segments: (i) Networking Platforms; (ii) Platform Software and Services; (iii) Blue Planet Automation Software and Services; and (iv) Global Services. See Note 3 to our Condensed Consolidated Financial Statements included in Item 1 of Part I of this report. Revenue As a result of the increased demand described above, our revenue increased by approximately 37% in the third quarter and first nine months of fiscal 2026 as compared to the third quarter and first nine months of fiscal 2025, or $451.7 million and $1.3 billion, respectively.
Cash flow & liquidity
Capital Allocation Strategy During the third quarter of fiscal 2026, we completed a convertible note offering of $2.9 billion and immediately used the proceeds to repay our term loan as described in Note 13 to our Condensed Consolidated Financial Statements included in Item 1 of Part I of this report. Our capital allocation strategy is focused on maintaining our significant innovation investment, investing in select transactions, and returning value to stockholders, while preserving our strategic and operational flexibility. We continuously work to improve our cash cycle and evaluate alternatives to manage our capital structure in order to enhance our liquidity. We ended the first nine months of fiscal 2026 with $2.8 billion of cash, cash equivalents, and investments.
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• Interest expense decreased by $19.4 million, primarily due to refinancing debt at 0% interest rate, net of the effect of a related termination of interest rate swaps, see notes 12 and 13. • Loss on extinguishment and modification of debt reflects the early extinguishment of our 2030 Term Loan in the third quarter of fiscal 2026 and refinancing of our 2030 Term Loan in the first quarter of fiscal 2025, see note 13. • Provision for income taxes increased by $38.3 million, primarily due to the increase in pre-tax book income. Liquidity and Capital Resources We regularly evaluate our capital structure, liquidity position, debt obligations, and anticipated cash needs to fund our operating or investment plans, and we will continue to consider capital raising and other market opportunities that may be available to us.
Management commentary
Management’s Discussion and Analysis of Financial Condition and Results of Operations Cautionary Note Regarding Forward-Looking Statements This report contains statements that discuss future events or expectations, projections of results of operations or financial condition, changes in the markets for our products and services, trends in our business, operational matters including the expansion of manufacturing capacity and accumulation of inventory, business prospects and strategies and other “forward-looking” information. Forward-looking statements may appear throughout this report, including in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Risk Factors.” In some cases, you can identify “forward-looking statements” by words like “may,” “will,” “would,” “can,” “should,” “could,” “expects,” “future,” “plans,” “anticipates,” “believes,” “estimates,” “predicts,” “intends,” “potential,” “projects,” “targets,” “prepare,” or “continue” or the negative of those words and other comparable words.
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You should be aware that the forward-looking statements contained in this report are based on our current views and assumptions, and are subject to known and unknown risks, uncertainties, and other factors that may cause actual events or results to differ materially. For a discussion identifying some of the important factors that could cause actual results to vary materially from those anticipated in the forward-looking statements, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Risk Factors” in this report.
For a more complete understanding of the risks associated with an investment in our securities, you should review these factors and the rest of this report in combination with the more detailed description of our business and management’s discussion and analysis of financial condition and risk factors described in our Annual Report on Form 10-K for the fiscal year ended November 1, 2025, which we filed with the Securities and Exchange Commission (the “SEC”) on December 12, 2025 (our “2025 Annual Report”). However, we operate in a very competitive and dynamic environment and new risks and uncertainties emerge, are identified, or become apparent from time to time, and therefore may not be identified in this report.
We cannot predict all risks and uncertainties that could have an impact on the forward-looking statements contained in this report. You should be aware that the forward-looking statements contained in this report are based on our current views and assumptions. We undertake no obligation to revise or to update any forward-looking statements made in this report to reflect events or circumstances after the date hereof or to reflect new information or the occurrence of unanticipated events, except as required by law. The forward-looking statements in this report are intended to be subject to protection afforded by the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995.
Unless the context requires otherwise, references in this report to “Ciena,” the “Company,” “we,” “us,” and “our” refer to Ciena Corporation and its consolidated subsidiaries. 28 Overview 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. Our solutions support network traffic across a wide range of applications, including cloud, voice, video, data, and artificial intelligence (“AI”). Our network solutions are used globally by cloud providers, service providers, and other network operators across multiple industry verticals. The markets into which we sell are dynamic and characterized by a high rate of change. Networks continue to experience strong demand for increased bandwidth due to traffic growth, which is being driven by a diverse set of services, technologies, and customer needs.
Business Momentum Our industry has been experiencing unprecedented increases in demand, in particular due to capital expenditures related to AI and other cloud-based applications. As a result, we experienced strong momentum and growth in fiscal 2025 that continued in the first three quarters of fiscal 2026. As our sales to cloud providers grow, we are seeing a small number of those customers become a larger portion of our business across multiple revenue segments. Our revenue increased by 37% to $1.7 billion in the third quarter of fiscal 2026 as compared to $1.2 billion in the third quarter of fiscal 2025, with orders for our products and services significantly exceeding our revenue.
This dynamic, together with an industry-wide constrained supply environment, has resulted in historically high backlog. […]
Key risks
Annual risk disclosures
Risk Factors Investing in our securities involves a high degree of risk. Before investing in our securities, you should consider carefully the information contained in this report, including the information in this “Risk Factors” section. Risks Related to Financial Performance and Strategy Our revenue, gross margin, and operating results can be adversely impacted by a number of factors that would cause our results to fluctuate. 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.
Additionally, our customer contracts generally do not include minimum or guaranteed purchases and may allow customers to modify or cancel purchase orders. We must regularly compete for business with existing customers and there is no assurance that we will maintain our incumbency or revenue level with any particular customer in future periods. Our results can be materially adversely affected by factors set forth in this “Risk Factors” section including: • order timing and volume, including book to revenue and backlog levels; • changes in spending or deployment plans by customers; • the level of competition we face and the impact of unfavorable transactions or commercial terms; • customer, product and geographic mix; • supply chain performance and costs; • the financial stability of our customers; and • consolidation activity involving us, our customers, suppliers, and competitors.
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As a result, our historical financial results may not be indicative of future performance. Quarterly fluctuations in our revenue, gross margin, and results of operations could cause us to fail to meet our guidance or the expectations of financial analysts or investors, which may cause volatility or decreases in our stock price. Our revenue is concentrated among a small number of customers and reductions in their spending could materially adversely impact our results of operations. 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.
Consequently, our results of operations could be materially adversely impacted by the loss of or a significant reduction in spending of a large customer. Moreover, our revenue is concentrated within the cloud provider and service provider customer segments. Adverse economic, business or regulatory dynamics within these industries or market segments affecting spending levels could materially adversely impact our results of operations. Our growth is dependent on executing our strategy and expanding our addressable market, and we may not be successful. Our growth depends on the successful execution of our business strategy and our ability to grow our addressable market, or to expand into new markets, technologies, or customer segments. A key part of this strategy is to leverage our optical technology leadership and expand our addressable market into complementary and adjacent markets by investing in new technologies, including for applications inside and around the data center, and specifically for AI-driven use cases.
Many of these markets are nascent or dynamic, and it is difficult to predict trends of these markets, including any potential growth. Moreover, we have a more limited history in commercializing and selling solutions into these markets. This expansion strategy may require a significant investment of capital and human resources, may disrupt our operations, and could impose substantial demands on management time. If the markets relating to these solutions do not develop as we anticipate, or if we are unable to commercialize, increase market awareness of, or gain adoption of our solutions within those markets, our business, financial performance, and long-term growth prospects could be adversely affected. 14 We operate in an intense and evolving competitive landscape and the level of competitive pressure we face may adversely impact our results of operations.
We operate in a highly competitive environment, where we and our competitors aggressively seek to capture market share and displace incumbent vendors. Many of these competitors have substantially greater resources, broader product offerings and more established customer relationships than we have. Because of their scale and resources, they may be perceived to be a better fit for the procurement or network strategies of larger network operators. […]
Quarterly risk disclosures
The quarterly report's own risk disclosure is shown below. No changes have been inferred by comparing reports.
Risk Factors There has been no material change to our Risk Factors from those presented in our 2025 Annual Report. Investing in our securities involves a high degree of risk. Before investing in our securities, you should consider carefully the information contained in this report and in our 2025 Annual Report, including the information under Item 1A of Part I thereof. This report contains forward-looking statements that involve risks and uncertainties. See “ Management’s Discussion and Analysis of Financial Conditions and Results of Operations – Cautionary Note Regarding Forward-Looking Statements ” in
Annual report details
Read annual management analysis & tone analysis
Annual MD&A Tone Analysis
+84.0
23 · 92.0%Positive terms
2 · 8.0%Negative terms
749Analyzed annual MD&A words
Only the extracted annual management discussion is evaluated using dictionary version 1.1. Score = (positive − negative) ÷ matched terms × 100. Quarterly reports and current filings are excluded. This lexical measure does not assess financial health and may not fully capture context or negation.
Management’s Discussion and Analysis of Financial Condition and Results of Operations The following discussion and analysis should be read in conjunction with our consolidated financial statements and notes thereto included elsewhere in this annual report. Overview 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. Our solutions support network traffic across a wide range of applications, including cloud, voice, video, data, and AI. Our network solutions are used globally by cloud providers, service providers, and other network operators across multiple industry verticals. The markets into which we sell are dynamic and characterized by a high rate of change.
Networks continue to experience strong demand for increased bandwidth due to traffic growth, which is being driven by a diverse set of services, technologies, and customer needs. Business Momentum Our industry has been experiencing unprecedented increases in demand, in particular as a result of expenditures related to AI and other cloud-based applications. As a result, we experienced broad-based business momentum in fiscal 2025, including significant year-over-year order growth in both of our major customer segments, cloud providers and service providers. Our revenue increased by 19% to $4.8 billion in fiscal 2025 as compared to $4.0 billion in fiscal 2024, with orders for our products and services significantly exceeding our revenue.
We also significantly grew our backlog, which includes both products and services, to $5.0 billion, as compared to $2.1 billion at the end of fiscal 2024. While we believe much of this backlog growth reflects the increased demand for connectivity to address AI workloads, a portion is related to an industry-wide constrained supply environment. Our ability to scale our operational and manufacturing capacity is critical to our success within this environment. As such, we and many of our suppliers have sought to increase capacity to ensure availability of key inputs for our products and reduce extended lead times. Within this environment, we have experienced increased customer concentration in both orders and revenue, particularly with cloud providers, with a single cloud provider customer continuing to provide a significant volume of orders and two cloud providers in our top five customers by revenue for fiscal 2025.
Our growing sales to cloud providers has resulted in a changing mix in our product sales. Gross Margin Dynamics Our gross margin decreased to 42.0% in fiscal 2025, compared to 42.8% in fiscal 2024, primarily due to lower services margin driven by increased incentive compensation and shifts in services mix. In fiscal 2025, our growing sales to cloud providers contributed to a changing product mix and an increase in sales of interconnect products, impacting our product gross margin. Through our continued focus on a range of initiatives to maintain and enhance our gross margin, including cost reductions, manufacturing efficiencies and lower inventory provisions, we were able to offset the impact of this dynamic and our product margin was unchanged from fiscal 2024 to fiscal 2025.
Investment in Technology Innovation During fiscal 2025, we invested $848.3 million in research and development activities, an increase of 11% compared to fiscal 2024. We believe that our investment capacity and our efforts to push the pace of innovation are important competitive differentiators in our markets, which requires considerable investment capacity and expenditures. In particular, in an effort to capture certain market opportunities created by the impact of AI on networks, we continued to increase the performance of, and enhance the capabilities for our leading WaveLogic TM coherent modem technology, through which we seek to extend our leadership in optical networking, and leverage it to expand our addressable market, including inside and around the data center.
In an effort to expand our addressable market, during the fourth quarter of fiscal 2025, we acquired privately-held Nubis, which specializes in high-performance, ultra-compact, low-power optical and electrical interconnects tailored to support AI workloads. Nubis’s portfolio, including technologies for co-packaged optics, near packaged optics and electrical active copper cables, will complement our existing optical networking portfolio of high-speed interconnects. See Note 3 to our Consolidated Financial Statements included in Item 8 of Part II of this report for more information on this acquisition. Operating Expense Management 26 Our operating expense grew from $1.6 billion in fiscal 2024 to $1.8 billion in fiscal 2025. As a result of our strong financial performance and order levels in fiscal 2025, our expense associated with our incentive compensation programs, including our annual bonus plan and sales compensation, increased year over year.
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