v3.26.1
Description of Business and Summary of Significant Accounting Policies
6 Months Ended
Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Description of Business and Significant Accounting Policies Description of Business and Summary of Significant Accounting Policies
Description of Business

A10 Networks, Inc. (together with our subsidiaries, the “Company”, “A10”, “we”, “our” or “us”) is a global provider of secure application and network solutions that protect, optimize, and scale business-critical systems across on-premises, hybrid cloud, and edge environments. Our network infrastructure and security products are designed to enable large enterprises, service providers, and cloud platforms worldwide to deliver performance, reliability, and protection against cyber threats, while preparing their networks for the demands of artificial intelligence (“AI”) and next-generation applications.

We sell our solutions globally to service providers and enterprises who are looking to modernize and secure their digital infrastructure and application. Our service provider customers rely on scalable, efficient, and secure networks to deliver connectivity, cloud and other services that may generate revenue to their customers. Our enterprise customers require secure application delivery, AI-ready infrastructure, and are increasingly concerned about the landscape of cybersecurity threats across their complex networks and emerging AI workloads. Our end-customers operate in a variety of industries, including telecommunications, technology, industrial, retail, financial, gaming, education and government. Since inception, our customer base has grown significantly.

A10’s portfolio brings together secure application delivery, DDoS and API protection, and unified management into a cohesive platform that integrates with existing network architectures and leading public cloud environments. We deliver these capabilities through flexible deployment models, including software, cloud-native, and hardware form factors that are tailored to the scale and requirements of our customers. We generate revenue primarily from the sale of our secure networking and cybersecurity solutions and related support services. These offerings are delivered through a combination of direct and channel-based sales, with most customers purchasing maintenance and support alongside their initial deployment and renewing that support as contracts expire.

We derive revenue from two sources: (i) products revenue, which includes hardware, perpetual software licenses and subscription offerings, which include term-based license agreements; and (ii) services revenue, which includes post contract support (“PCS”), professional services, training and software-as-a-service (“SaaS”) offerings. Revenue for term-based license agreements is recognized at a point in time when the Company delivers the software license to the customer and over time once the subscription term has commenced. For our SaaS offerings, our customers do not take possession of the Company’s software but rather we provide access to the service via a hosting arrangement. Revenue in these arrangements is recognized over time as the services are provided. A substantial portion of our revenue is from sales of our products and services through distribution channels, such as resellers and distributors. Our customers predominantly purchase PCS services in conjunction with purchases of our products.

We operate worldwide across the Americas, EMEA, and Asia Pacific, supported by a hybrid go-to-market model that combines a direct, high-touch sales organization with a broad ecosystem of distributors, resellers, and system integrators. We believe this sales approach allows us to obtain the benefits of channel distribution, such as expanding our market coverage, while still maintaining face-to-face relationships with our end-customers. We outsource the manufacturing of our hardware products to original design manufacturers. We perform quality assurance and testing at our San Jose, Taiwan and Japan distribution centers, as well as at our manufacturers’ locations.

We sell our products globally to enterprises and service providers that depend on data center applications and networks to generate revenue and manage operations efficiently. While we expect total demand to remain strong as the need for cybersecurity solutions continues to increase, we expect the demand shift trend from service provider to enterprise to continue in the near term. We report customer revenues in three broad geographic regions: the Americas, APJ and EMEA regions. The Americas region comprises the U.S. and all other countries in the Americas (excluding the U.S.). The APJ region comprises Asia Pacific region including Japan. The EMEA region comprises Europe, Middle East and Africa. We believe this vertical and geographic view aligns with how we manage the business and maps our product portfolio to customer verticals.

We continue to invest in innovation that strengthens our leadership in secure infrastructure, expands our cybersecurity capabilities, and positions A10 at the intersection of network performance, protection, and AI-driven workloads. Our strategy is grounded in disciplined capital allocation and a commitment to deliver durable revenue growth, expanding recurring revenue, and strong cash flow generation.

On June 15, 2026, we acquired TrojAI Inc. (“TrojAI”), an AI security company incorporated under the Canada Business Corporations Act, focused on helping organizations secure, test and govern AI applications and agentic workflows.
The acquisition strengthens the Company’s ability to deliver sovereign AI security, helping customers control how and where their AI models, data and agents are protected.

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements include those of A10 Networks, Inc. and its subsidiaries after elimination of all intercompany accounts and transactions.

We have prepared the accompanying unaudited condensed consolidated financial statements pursuant to the rules and regulations of the United States Securities and Exchange Commission (the “SEC”). As permitted under these rules and regulations, we have condensed or omitted certain financial information and footnote disclosures we normally include in our annual consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The unaudited condensed consolidated balance sheet as of December 31, 2025 has been derived from our audited financial statements, which are included in our 2025 Annual Report on Form 10-K for the year ended December 31, 2025 filed with the SEC on February 25, 2026 (the “2025 Annual Report”).

These financial statements have been prepared on the same basis as our annual financial statements and, in management’s opinion, reflect all adjustments consisting only of normal recurring adjustments that are necessary for a fair presentation of our financial information. Our interim period operating results do not necessarily indicate the results that may be expected for any other interim period or for the full fiscal year. 

These financial statements and accompanying notes should be read in conjunction with the financial statements and accompanying notes thereto in the 2025 Annual Report.

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Those estimates and assumptions affect revenue recognition and deferred revenue, the allowance for credit losses for potential uncollectible amounts, the sales return reserve, the valuation of inventory, the fair value of marketable securities, contingencies and litigation, accrued and other liabilities, deferred commissions, TrojAI and ThreatX Protect purchase price allocations and the determination of fair value of stock-based compensation. These estimates are based on information available as of the date of the condensed consolidated financial statements, therefore, actual results could differ from management’s estimates.

Significant Accounting Policies

The Company’s significant accounting policies are disclosed in Part II – Item 8, “Financial Statements and Supplementary Data” of the 2025 Annual Report. There have been no material changes to the Company’s significant accounting policies during the three and six months ended June 30, 2026.

Concentration of Credit Risk and Significant Customers

Financial instruments that potentially subject us to concentrations of credit risk consist of cash, cash equivalents, marketable securities and accounts receivable. Our cash, cash equivalents and marketable securities are held and invested in high-credit quality financial instruments by recognized financial institutions and are subject to minimum credit risk.

Our accounts receivable are unsecured and represent amounts due to us based on contractual obligations of our customers. We mitigate credit risk in respect to accounts receivable by performing periodic credit evaluations based on a number of factors, including past transaction experience, evaluation of credit history and review of the invoicing terms of the contract. We generally do not require our customers to provide collateral to support accounts receivable.

Significant customers, including distribution channels and direct customers (“end-customers”), are those which represent 10% or more of our total revenue for each period presented or our gross accounts receivable balance as of each respective balance sheet date.
A substantial portion of our revenue is from sales of our products and services through distribution channels, such as resellers and distributors. In the three months ended June 30, 2026 and 2025, sales through a single distribution channel represented 40% and 32% of our total revenue, respectively. In the six months ended June 30, 2026 and 2025, sales through a single distribution channel represented 39% and 25% of our total revenue, respectively.

Revenues from our significant end-customers as a percentage of our total revenue are as follows:

Three Months Ended June 30,Six Months Ended June 30,
Customers2026202520262025
Customer A38%30%38%23%

We report revenue in two customer verticals: enterprises, which accounted for 60% and 40% of our total revenue during the three months ended June 30, 2026 and 2025, respectively, and service providers, which accounted for 40% and 60% of our total revenue during the three months ended June 30, 2026 and 2025, respectively. During the six months ended June 30, 2026 and 2025, enterprises accounted for 58% and 41% of our total revenue, respectively. During the six months ended June 30, 2026 and 2025, service providers accounted for 42% and 59% of our total revenue, respectively.

A substantial portion of our revenue comes from a limited number of large end-customers and service providers. Purchases from our ten largest end-customers accounted for 58% and 46% of our total revenue for the three months ended June 30, 2026 and 2025, respectively, and accounted for 55% and 42% of our total revenue for the six months ended June 30, 2026 and 2025, respectively.

As of June 30, 2026, a single distribution channel accounted for 57% of our total gross accounts receivable. As of December 31, 2025, a single distribution channel accounted for 23% of our total gross accounts receivable.

Recently Adopted Accounting Standard

In July 2025, the FASB issued ASU 2025-05 Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets, which amends ASC 326-20 to provide a practical expedient (for all entities) and an accounting policy election (for all entities, other than public business entities that elect the practical expedient) related to the estimation of expected credit losses for current accounts receivable and current contract assets that arise from transactions accounted for under ASC 606. The standard should be applied prospectively, and is effective for annual periods, including interim reporting periods, beginning after December 15, 2025. The Company adopted this ASU during the first quarter of fiscal year 2026 on a prospective basis. The adoption of this ASU did not have a material impact on its consolidated financial statements.

Recent Accounting Standards Not Yet Adopted

In November 2024, the FASB issued ASU 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, requiring public entities to disclose additional information about specific expense categories in the notes to the consolidated financial statements on an interim and annual basis. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, and for interim periods beginning after December 15, 2027, with early adoption permitted. We are currently evaluating the impact of adopting ASU 2024-03.

In September 2025, the FASB issued ASU 2025-06, Intangibles—Goodwill and Other Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software, which simplifies the capitalization guidance by removing references to software development project stage so that the guidance is neutral to different software development methods. ASU 2025-06 are effective for annual periods beginning after December 15, 2027, and interim reporting periods within those annual reporting periods and are to be applied on a prospective, modified retrospective or retrospective basis, with early adoption permitted. The Company's interim and annual reporting requirements will be effective for the Company beginning in the first quarter of fiscal year 2028. We are in the process of analyzing the impact of adopting ASU 2025-06 on our consolidated financial statements.

There have been no other recent accounting pronouncements, changes in accounting pronouncements or recently adopted accounting guidance during the three and six months ended June 30, 2026 that are of significance or potential significance to us.