0001406666-26-000005
SEC filingRevenue grew 20% YoY to $1.00B driven by appliance adoption and CXP subscriber expansion, with gross margin expanding 220 bps to 56.8%.
Calix positions itself as a provider of platform, cloud, and managed services powered by agentic AI, enabling communication service providers (CSPs) to transform into experience providers (CXPs). The company emphasizes its mission to simplify, innovate, and grow for service providers of all types. Calix’s platform combines the Calix Agent Workforce with intelligent appliances, software, cloud, and fully integrated SmartLife managed services. The company also offers Calix Customer Success and a partner community to extend innovation.
The Business section does not disclose any separate reporting segments. The company describes its offerings as an integrated platform encompassing agentic AI, cloud, software, appliances, and managed services.
Calix’s product strategy centers on the Calix One Platform, which includes Calix Cloud (Engagement, Operations, Service Cloud), Calix Agent Workforce (Service, Subscriber, Operations, Marketing Agents), Calix Access Edge (access network solution), Calix Experience Edge (premises Wi-Fi and service delivery), and Calix SmartLife managed services (SmartHome, SmartTown, SmartBiz, SmartMDU). Key consumer-facing applications include CommandIQ, CommandWorx, PropertyWorx, and Field Service App. Hardware families include GigaSpire and GigaPro Wi-Fi appliances. The Access Edge network solutions utilize the E-Series family of modular systems.
Calix markets and sells primarily through a direct sales force, supported by marketing, product management, and customer success personnel. This direct model is complemented by select channel partners in North America and over 40 international channel partners. No customer represented more than 10% of revenue in the last three fiscal years. The company has approximately 1,600 active service provider customers, including ALLO Communications, Brightspeed, CityFibre, Conexon Connect, Cox, Lumos, Hunter Communications, ICS Advanced Technologies, Jade Communications, Rally Networks, South Central Telephone, Tombigbee Electric, and Verizon. Sales outside the U.S. were 7% of revenue in 2025.
The communications software and systems equipment markets are highly competitive based on functionality, price, customer relationships, quality, service, scalability, and development capability. Calix names direct competitors: ADTRAN, Ciena, CommScope, eero/Ring (Amazon), Harmonic, Huawei, Nokia, Plume Design, and Ubiquiti. The company expects competition to intensify, particularly as it expands into adjacent markets.
Calix’s strategy consists of six principal elements: (1) Start with the data – using the Calix Agent Workforce and Cloud to deliver actionable insights; (2) Build and evolve the platform – delivering intelligence and automation across the subscriber-facing network; (3) Engage directly with CXP customers – investing in direct sales and specialized resources; (4) Expand customer footprint – targeting all types of service providers, including emerging segments like fiber overbuilders, utilities, and municipalities; (5) Extend the portfolio of Calix services – leveraging the Success team for network and service delivery lifecycle; (6) Pursue strategic relationships – with technology and distribution partners such as Conexon, ePlus, BroadEngagement, Google, and GOCare.
As of December 31, 2025, Calix employed 1,921 people globally: 1,046 in the U.S. and 875 outside the U.S., primarily in Canada, China, and India. Except for one employee in France subject to collective bargaining, no employees are represented by a labor union. The company considers its talent critical to operations and invests significantly in attracting, developing, and retaining employees.
For the fiscal year 2025, Calix reported total revenue of $1.00 billion, a 20% increase from $831.5 million in 2024. The growth was driven by a 19% rise in appliance revenue to $825.6 million and a 27% jump in software and service revenue to $174.4 million. Gross profit grew 25% to $568.3 million, with gross margin expanding 220 basis points to 56.8%. The margin improvement was attributed to the continued adoption of the platform, cloud, and managed services by new broadband service providers and CXP customers winning new subscribers. Operating expenses increased 14% in sales and marketing to $248.6 million, 6% in R&D to $190.4 million, and 10% in G&A to $108.3 million, primarily due to higher personnel costs and stock-based compensation. Operating income turned positive to $21.0 million from an operating loss of $43.0 million in the prior year. Net income was $17.9 million compared to a net loss of $29.7 million in 2024, aided by lower interest income and tax benefit shifts.
Calix operates two segments: Appliance and Software and service. Appliance revenue growth of 19% was driven by new customer wins and expansion of existing customer deployments, as service providers adopt the Calix platform to replace legacy box vendors. Software and service revenue grew 27%, fueled by CXP customers adding new subscribers, as the software is sold on a per-subscriber basis. U.S. revenue remained dominant at 93% of total revenue (92% in 2024). No customer accounted for more than 10% of revenue. Gross margin for appliances improved to 55.5% from 54.2%, while software and service gross margin increased sharply to 62.9% from 56.3%, reflecting scale benefits and subscriber growth.
Management expects investments in sales and marketing to increase in absolute dollars but decline as a percentage of revenue as the company continues to land new customers and expand platform adoption. R&D investments are expected to increase in absolute dollars and as a percentage of gross profit in the short term due to accelerated development of AI functionality. The company faces headwinds from increased tariffs on imports from Asia and rising DDR4 memory prices, which may impact cost of revenue. However, the company believes its existing cash, cash equivalents, and marketable securities ($388.1 million) are sufficient for at least the next twelve months, supported by operating cash flow generation of $135.0 million. No explicit numerical guidance was provided.
As of December 31, 2025, Calix held $143.1M in cash and equivalents and $245.0M in marketable securities, totaling $388.1M in liquid assets. Shareholders' equity stood at $859.2M, up from $780.9M a year earlier. Inventory increased to $133.7M (from $102.7M), reflecting higher finished goods. The company had no debt; total liabilities were $199.3M, primarily deferred revenue ($50.3M) and operating lease liabilities ($15.6M). Remaining performance obligations (RPOs) were $385.0M, of which 39% is expected to be recognized over the next 12 months.
Calix had $317.8M in outstanding purchase commitments to third-party manufacturers and other vendors as of year-end, up from $248.7M in 2024. These are primarily for component inventory based on build forecasts. Operating lease obligations totaled $18.4M in future minimum payments, with a weighted-average remaining lease term of 5.7 years (discount rate 5.4%). The company also has indemnification obligations and litigation contingencies, none of which are currently expected to be material.
During 2025, Calix repurchased 2.5 million shares for $93.6M at an average price of $37.11, leaving $109.3M authorized at year-end. In January 2026, the Board authorized an additional $125.0M for repurchases, and as of the filing date, an additional $148.7M had been deployed in early 2026. No dividends were declared. Capital expenditures were $19.4M (1.9% of revenue), primarily for test equipment and leasehold improvements. Stock-based compensation totaled $88.0M, including $21.5M for performance stock options.
Calix operates as a single reporting segment. Revenue by product line: Appliance $825.6M (82.6%), Software and service $174.4M (17.4%). Geographically, the U.S. dominates at $934.8M (93.5%), followed by Europe $33.4M, Americas ex-U.S. $25.3M, and rest of world $6.5M. No single customer represented >10% of revenue. Property and equipment is primarily located in the U.S. ($33.5M), with smaller amounts in China ($2.6M) and India ($1.7M).
Calix's risk factors emphasize its reliance on successful adoption of its platform, cloud, and managed service offerings, including new AI-enabled 'agentic' capabilities. Failure to drive customer adoption would negatively impact revenue and growth. The company also depends on third-party vendors for manufacturing, with sole-source components and supply chain disruptions (e.g., memory constraints) posing ongoing risks to gross margin and operations.
New U.S. tariffs on Chinese imports and potential trade barriers increase cost of revenue and introduce demand uncertainty. The regulatory landscape for AI is rapidly evolving: the EU AI Act (effective 2026) and emerging U.S. state laws could impose transparency and risk-management requirements, raising compliance costs. The DOJ's Data Security Program adds complexity for cross-border data transfers.
Customer capital spending cycles, government funding (e.g., BEAD program), and economic downturns can cause revenue fluctuations. Intense competition from larger players with broader resources may pressure pricing and margins.
Product defects, interoperability issues, and reliance on third-party technology licenses could harm reputation and sales. The company's use of open-source software carries licensing risks.
Fluctuating gross margins, customer credit risk, and stock price volatility are noted. The company does not pay dividends and may need additional capital. Stock repurchase programs may not enhance long-term value.
The provided excerpt from the 10-K filing does not contain the actual cash flow statement figures. It only references the location of the statement (page 44) and includes the audit report and other notes. Therefore, no analysis of cash flow quality, CFO vs net income, capex intensity, or FCF coverage is possible. Without explicit data, any assumptions would violate the instruction to use only figures explicitly stated.
To complete the analysis, the specific cash flow amounts for operating, investing, financing activities, as well as capital expenditures and free cash flow, would be required from the actual financial statements.