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Fortinet, Inc.

For the period ended Mar 31, 2026. Filed May 8, 2026.

View on SEC.gov

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Mar 31, 2026 · Filed May 8, 2026

FTNT$118.84-3.0%Stored close · as of Nov 6, 2026

What changed in Management’s Discussion and Analysis?

Read the current filing

Previous report: 10-Q

Period ended 2025-09-30; filed 2025-11-07.

0001262039-25-000039

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Current report: 10-Q

Period ended 2026-03-31; filed 2026-05-08.

0001262039-26-000013

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The baseline is this issuer’s latest earlier reporting period of the same form that was filed before the current report. A previous 10-Q is a different quarter, not a year-over-year comparison. Amendments are excluded.

Compared 162 previous paragraphs and 136 current paragraphs.

62 unchanged; 64 reworded; 9 added; 29 removed; 7 previous and 1 current paragraphs rearranged.

Tables are not compared: 16 previous and 10 current tables excluded. Dates, whitespace, punctuation and numbering changes are ignored; changes to financial figures remain significant.

A changed paragraph is not evidence that risk increased or decreased. An unchanged paragraph does not establish that risk stayed the same.

Added paragraphs (9)

Current report

•FortiOS—Our unified operating system enables the convergence of networking and AI-powered security to enforce consistent policies across all form factors and edges. As the foundational engine of the Fortinet

Current report

Security Fabric, FortiOS empowers organizations to unify management and analytics, providing network visibility and control at scale. FortiOS includes advanced encryption and other security technologies designed to address evolving cybersecurity threats, including emerging quantum-resistant cryptographic capabilities.

Current report

•FortiAI—FortiAI provides a dual-layered defense across the Fortinet Security Fabric through the AI for Security and Security for AI framework. Within AI for Security, FortiAI-Assist uses generative and agentic AI to support Network Operations Center (“NOC”) and Security Operations Center (“SOC”) teams in monitoring, analysis and response activities across enterprise environments. Security for AI comprises of FortiAI-Protect and FortiAI-SecureAI. FortiAI-Protect utilizes AI/Machine Learnings (“ML”) to address AI-driven threats and zero-day attacks, and support governance over generative AI (“GenAI”) applications, FortiAI-SecureAI focus on protecting an organization’s AI infrastructure, including large language models (“LLMs”) and Application Programming Interface, and preventing data leakage into and out of LLMs. FortiAI protects the AI ecosystem, infrastructure, models, workloads, data and supply chains, while leveraging unified AI intelligence across the Fortinet Security Fabric to defend against threats.

Current report

•OT Security—The Fortinet Security Fabric enables security for OT systems and Cyber-Physical Systems (“CPS”), including converged IT/OT architectures. Our OT Security Platform is purpose-built to protect the engineered systems that underpin critical infrastructure and supply chains around the world. This includes securing energy and utilities systems, manufacturing environments, and transportation, utilizing FortiGuard OT Security Services. These offerings include security capabilities for CPS assets and tools that support centralized NOC and SOC functions.

Current report

•Total revenue was $1.85 billion during the three months ended March 31, 2026, an increase of 20%, compared to $1.54 billion in the same period last year. Product revenue was $645.1 million during the three months ended March 31, 2026, an increase of 41%, compared to $459.1 million in the same period last year. Service revenue was $1.20 billion during the three months ended March 31, 2026, an increase of 11%, compared to $1.08 billion in the same period last year.

Current report

•Operating income was $580.0 million during the three months ended March 31, 2026, an increase of 28%, compared to $453.8 million in the same period last year.

Current report

•Operating margin was 31.4% during the three months ended March 31, 2026, an increase of 1.9 percentage points, compared to 29.5% in the same period last year.

Current report

Total gross margin decreased 0.7 percentage points during the three months ended March 31, 2026 compared to the same period last year, primarily driven by a shift in the revenue mix to lower margin product revenue. Revenue mix shifted by 5.1 percentage points from service revenue to product revenue, as a percentage of total revenue.

Current report

General and administrative expenses decreased $1.6 million, or 3%, during the three months ended March 31, 2026 compared to the same period last year, primarily due to a decrease of $2.7 million in personnel-related costs. We expect our general and administrative expenses to increase in absolute dollars during the remainder of 2026, as we need to support our growing operations while continuing to leverage scale and efficiencies.
Removed paragraphs (29)

Previous report

•FortiOS—FortiOS enables the convergence of security and networking to enforce consistent security policies across form factors and edges. As the foundation of the Fortinet Security Fabric, FortiOS empowers organizations to unify management and analytics for comprehensive network visibility and control at scale. To further validate our strategy, FortiOS has been recognized across five Gartner Magic Quadrants, including Firewall, Software-Defined Wide-Area

Previous report

Network (“SD-WAN”), Security Service Edge (“SSE”), SASE Platforms and Wired and Wireless Local Area Network (“LAN”).

Previous report

•FortiAI—FortiAI includes FortiAI-Protect, which defends against emerging AI-driven threats and ensures secure AI usage; FortiAI-Assist, our generative AI product with agentic AI, automates Security Operations Center (“SOC”) and Network Operations Center (“NOC”) operations; and FortiAI-SecureAI, which safeguards AI infrastructure and prevents data leakage into large language models. FortiAI helps security teams make faster, educated decisions while integrating into products like FortiAnalyzer, FortiManager, FortiSIEM, and FortiSOAR to streamline threat investigation, response, and automation.

Previous report

•OT Security—The Fortinet Security Fabric enables security for converged IT/OT ecosystems. It also provides an OT Security Platform with features and products to extend Security Fabric capabilities to OT networks in many areas, including factories, plants, remote locations and ships. To help alleviate security risks across the organization, we have continued to enhance our OT Security Platform offerings. These innovations range from edge products to NOC and SOC tools and services to provide effective and efficient networking and cybersecurity performance and operation.

Previous report

•Total revenue was $1.72 billion and $4.89 billion during the three and nine months ended September 30, 2025, an increase of 14% in each period, compared to $1.51 billion and $4.30 billion in the same periods last year. Product revenue was $559.3 million and $1.53 billion during the three and nine months ended September 30, 2025, an increase of 18% and 14%, respectively, compared to $473.9 million and $1.33 billion in the same periods last year. Service revenue was $1.17 billion and $3.37 billion during the three and nine months ended September 30, 2025, an increase of 13% and 14%, respectively, compared to $1.03 billion and $2.96 billion in the same periods last year.

Previous report

•Operating income was $547.3 million and $1.46 billion during the three and nine months ended September 30, 2025, an increase of 16% and 19%, respectively, compared to $470.9 million and $1.23 billion in the same periods last year.

Previous report

•Operating margin was 31.7% and 29.8% during the three and nine months ended September 30, 2025, an increase of 0.5 percentage points and 1.2 percentage points, respectively, compared to 31.2% and 28.6% in the same periods last year.

Previous report

Total gross margin decreased 1.7 percentage points during the three months ended September 30, 2025 compared to the same period last year, primarily driven by decreased product and service gross margins.

Previous report

General and administrative expense decreased $10.3 million, or 14%, during the three months ended September 30, 2025 compared to the same period last year, primarily due to a decrease of $7.6 million in legal related fees and other professional services fees and a decrease of $1.3 million in personnel-related costs. We expect our general and administrative expense to be relatively consistent in absolute dollars year over year during the remainder of 2025.

Previous report

We generated operating income of $547.3 million during the three months ended September 30, 2025, an increase of $76.4 million, or 16%, compared to $470.9 million in the same period last year. Operating margin was 31.7% during the three months ended September 30, 2025, compared to 31.2% in the same period last year. The 0.5 percentage points increase in operating margin was primarily due to 1.2, 0.6 and 0.4 percentage points decreases in general and administrative expense, research and development expense and sales and marketing expense as a percentage of revenue, respectively, partially offset by 1.7 percentage points decrease in gross margin.

Previous report

Interest income and interest expense remained comparatively flat during the three months ended September 30, 2025 compared to the same period last year. Other income—net decreased $105.1 million during the three months ended September 30, 2025 compared to the same period last year, primarily due to a gain on bargain purchase of $106.3 million during the three months ended September 30, 2024 related to our acquisition of Lacework.

Previous report

On July 4, 2025, H.R. 1, the Act commonly referred to as the One Big Beautiful Bill Act, was enacted. The Act makes permanent certain elements of the Tax Cuts and Jobs Act, including immediate expensing of U.S. research and development expenditures, immediate expensing of certain eligible assets, and various modifications to the international tax framework. The income tax effects of the Act have been recognized in our provision for income taxes as of September 30, 2025. As a result of the Act, our cash paid for income taxes in 2025 could reduce by approximately $100 million to $150 million, while our GAAP effective tax rate for 2025 could increase by approximately one percentage point.

Previous report

Loss from equity method investments decreased $5.1 million during the three months ended September 30, 2025 compared to the same period last year which included a $5.2 million loss due to our proportionate share of Linksys’ financial results including our share of the amortization of the basis differences during the three months ended September 30, 2024.

Previous report

Product revenue increased $192.6 million, or 14%, during the nine months ended September 30, 2025 compared to the same period last year. We experienced product revenue growth across our hardware products and software licensing, mainly driven by growth in secure networking hardware products and term licenses.

Previous report

Total gross margin increased 0.4 percentage points during the nine months ended September 30, 2025 compared to the same period last year, driven by increased product gross margin, partially offset by decreased service gross margin.

Previous report

Product gross margin increased 3.0 percentage points during the nine months ended September 30, 2025 compared to the same period last year, as inventory related reserves expense decreased and normalized as compared to the elevated levels we saw in the nine months ended September 30, 2024. Cost of product revenue was comprised primarily of third-party contract manufacturers’ costs and costs of materials used in production.

Previous report

Sales and marketing expense increased $199.9 million, or 13%, during the nine months ended September 30, 2025 compared to the same period last year, primarily due to an increase of $153.9 million in personnel-related costs. In addition, marketing program and related expenses increased $18.2 million and amortization expense of certain intangible assets increased $13.3 million.

Previous report

General and administrative expense decreased $6.6 million, or 4%, during the nine months ended September 30, 2025 compared to the same period last year, primarily due to a decrease of $7.3 million in legal related fees and other professional services fees, partially offset by an increase of $1.4 million in personnel-related costs.

Previous report

Our effective tax rate was 18% for the nine months ended September 30, 2025 compared to an effective tax rate of 14% for the same period last year. The provision for income taxes for the nine months ended September 30, 2025 was primarily comprised of U.S. federal and state taxes, withholding taxes and foreign taxes that were $384.2 million and a tax provision of $30.6 million related to the derecognition of deferred tax assets from the business combination with Linksys. This provision for income taxes was favorably affected by a tax benefit of $62.0 million from the FDII deduction, and excess tax benefits from stock-based compensation expense of $58.5 million.

Previous report

The provision for income taxes for the nine months ended September 30, 2024 was comprised of U.S. federal and state taxes, withholding taxes, and foreign taxes that were $315.0 million, which were favorably affected by a tax benefit of $84.0 million from the FDII deduction, and excess tax benefits from stock-based compensation expense of $33.8 million.
Reworded paragraphs (64)

Previous wording

•our ability to successfully anticipate market changes, including those related to cloud-based and AI solutions and to sell, support and meet service level agreements related to cloud-based solutions;

Current wording

•our ability to successfully anticipate market changes, including those related to cloud-based and Artificial Intelligence (“AI”) solutions and to sell, support and meet service level agreements related to cloud-based solutions;

Previous wording

•supply chain constraints, component availability and other factors affecting our manufacturing capacity, delivery, cost and inventory management;

Current wording

•supply chain constraints (including constraints on the availability of memory chips), component availability and other factors affecting our manufacturing capacity, delivery, cost and inventory management;

Previous wording

•trends in revenue, cost of revenue and gross margin, including expectations regarding product revenue, service revenue and inventory related charges;

Current wording

•trends in revenue, cost of revenue and gross margin, including product revenue, service revenue and inventory related charges;

Previous wording

•trends in our operating expense, including sales and marketing expense, research and development expense, general and administrative expense, and expectations regarding these expenses;

Current wording

•trends in our operating expenses, including sales and marketing expenses, research and development expenses, general and administrative expenses;

Previous wording

•expected impact of plans and strategy for the acceleration of our data center footprint and our PoPs deployment;

Current wording

•expected impact of plans and strategy for the acceleration of our data center footprint and our PoP deployment;

Previous wording

•expectations regarding our gross margins and operating expenses for 2025;

Previous wording

•expectations regarding spending related to real estate assets, acquisitions and development, including data centers and points of presence, office building and warehouse investments, as well as other capital expenditures and to the impact on free cash flow and expenses;

Current wording

•spending related to real estate assets, acquisitions and development, including data centers and points of presence, office building and warehouse investments, as well as other capital expenditures and to the impact on free cash flow and expenses;

Previous wording

Fortinet is a leader in cybersecurity, driving the convergence of networking and security. Our mission is to secure people, devices and data everywhere. Our integrated platform, the Fortinet Security Fabric, spans secure networking, unified SASE and AI-driven security operations (“SecOps”). As of September 30, 2025, our end-customers were located in over 100 countries and included enterprises across a wide variety of market verticals, including financial services, retail, healthcare and operational technology (“OT”) market verticals, communication and security service providers, and government organizations. As a global company headquartered in Sunnyvale, California, our research and development is centered in the United States and Canada with a global footprint of support and centers of excellence around the world. As of September 30, 2025, we held 1,027 U.S. patents and 1,360 global patents, including 307 AI-related patents. We have been recognized in over 140 enterprise analyst reports demonstrating both our vision and execution across security and networking products.

Current wording

Fortinet is a leader in cybersecurity, driving the convergence of networking and security. Our mission is to secure people, devices and data everywhere. Our integrated platform, the Fortinet Security Fabric, spans secure networking, unified Secure Access Service Edge (“SASE”) and AI-driven security operations (“SecOps”). As of March 31, 2026, our end-customers were located in over 100 countries and included enterprises across a wide variety of market verticals, including financial services, retail, healthcare and operational technology (“OT”) market verticals, communication and security service providers, and government organizations. As a global company headquartered in Sunnyvale, California, our research and development is centered in the United States and Canada with a global footprint of support and centers of excellence around the world. As of March 31, 2026, we held 1,093 U.S. patents and a total of 1,430 global patents.

Previous wording

•FortiASIC—Our Application-Specific Integrated Circuit (“ASIC”)-based SPUs increase the speed, scale, efficiency and value of our solutions while improving user experience, reducing footprint and power requirements. From branch and campus to data center solutions, SPU-powered Fortinet appliances deliver superior Security Compute Ratings versus industry alternatives.

Current wording

•FortiASIC—Our Application-Specific Integrated Circuit (“ASIC”)-based Security Processing Units (“SPUs”) increase the speed, scale, efficiency and value of our solutions while reducing footprint and power requirements. From branch and campus to data center solutions, SPU-powered Fortinet appliances deliver superior Security Compute Ratings versus industry alternatives.

Previous wording

•FortiCloud—Our organically built global cloud infrastructure provides customers with global reach, flexible connectivity, and cost savings. FortiCloud is our private cloud software as a service (“SaaS”) platform, powered by FortiStack, and leveraging software and hardware to optimize and secure all layers.

Current wording

•FortiCloud—Our organically built global cloud infrastructure provides customers with global reach, flexible connectivity and cost savings. FortiCloud is our private cloud software as a service (“SaaS”) platform, powered by FortiStack, which is our secure SaaS platform operating as a private cloud service provider, and leveraging software and hardware to optimize and secure all layers.

Previous wording

•FortiEndpoint—FortiEndpoint converges secure connectivity, endpoint protection and advanced capabilities like endpoint detection and response and extended detection and response (“XDR”), into a single agent. It simplifies management and enhances visibility while reducing costs and complexity. The solution gives IT teams the visibility and control they need, while security teams benefit from automated threat detection and response. This minimizes the need for manual intervention and provides faster remediation of threats across all environments.

Current wording

•FortiEndpoint—FortiEndpoint converges secure connectivity, endpoint protection and advanced capabilities like endpoint detection and response and universal Zero Trust Network Access (“ZTNA”), into a unified agent and management console. It simplifies management and enhances visibility while reducing costs and complexity. The solution gives IT teams the visibility and control they need, while security teams benefit from automated threat detection and response. This minimizes the need for manual intervention and provides faster remediation of threats across environments.

Previous wording

These competitive differentiators provide networking and security professionals with a comprehensive cyber security platform comprised of over 50 products across three solution pillars:

Current wording

These competitive differentiators provide networking and security professionals with a cyber security platform comprised of over 50 products across three solution pillars:

Previous wording

•Secure Networking—Our Secure Networking solutions focus on the convergence of networking and security via FortiOS, our networking and security operating system that is the foundation of our Fortinet Security Fabric platform and supports over 30 functions that can be delivered via a physical, virtual, cloud or SaaS solutions. When delivered through our network firewall appliances, functionality is accelerated through our proprietary ASIC technology. These proprietary ASICs, allow our systems to scale, run multiple applications at higher performance, lower power consumption and perform more processor-intensive operations, such as inspecting encrypted traffic, including streaming video. Our network firewall offerings consist of a FortiGate data center, hyperscale and distributed firewalls, as well as encrypted applications (secure sockets layer inspection, virtual private network and Internet Protocol Security connectivity). Our ability to converge networking and security also enables the ethernet to become an extension of our customers’ security infrastructure through FortiSwitch and FortiLink. Our wireless LAN solution leverages secure networking to provide secure wireless access for the enterprise LAN edge. FortiExtender secures 5G/LTE and remote ethernet extenders to connect and secure any branch environment. Our Secure Connectivity solution includes FortiSwitch secure ethernet switches, FortiAP wireless local area network access points and FortiExtender 5G connectivity gateways.

Current wording

•Secure Networking—Our Secure Networking solutions focus on the convergence of networking and security via FortiOS, our networking and security operating system that is the foundation of our Fortinet Security Fabric platform and supports a broad range of functions that can be delivered via a physical, virtual, cloud or SaaS solutions. When delivered through our network firewall appliances, functionality is accelerated through our proprietary ASIC technology. These proprietary ASICs, allow our systems to scale, run multiple applications at higher performance, lower power consumption and perform more processor-intensive operations, such as inspecting encrypted traffic, including streaming video. Our network firewall offerings consist of a FortiGate, which can be deployed at branch, campus, data center, internal segmentation, private and public cloud to enable hybrid mesh firewall solutions, as well as encrypted applications (secure sockets layer inspection, virtual private network and Internet Protocol Security connectivity). Our ability to converge networking and security also enables the ethernet to become an extension of our customers’ security infrastructure through FortiSwitch and FortiLink. FortiExtender secures 5G/LTE and remote ethernet extenders to connect and secure any branch environment. Our Secure Connectivity solution includes FortiSwitch secure ethernet switches, FortiAP wireless local area network access points and FortiExtender 5G connectivity gateways and Network Access Control for securing Internet of Things (“IoT”) devices.

Previous wording

•Unified Secure Access Service Edge (SASE)—As applications move to the cloud and hybrid workforce is now the norm, enabling secure access for users with zero trust framework becomes important. The Fortinet Unified SASE solution includes a single-vendor SASE solution that includes firewall, SD-WAN, secure web gateway, cloud access services broker, DLP and zero trust network access (“ZTNA”) to deliver flexible secure access for all users. We are one of the few vendors to deliver consistent convergence and AI-powered security across Secure SD-WAN and SSE to enable a single-vendor SASE framework with a cloud-centric architecture powered by FortiOS. Our global and scalable cloud network includes over 170 PoPs to deliver the seamless secure access experience. Given this, we believe we are well positioned to support customers expanding from SD-WAN to a single-vendor SASE platform. Additionally, we offer a full suite of comprehensive, integrated cloud security solutions that enable customers to secure their applications from code to cloud. Our solutions include application security that includes our web application firewalls, cloud network security with virtualized firewalls and cloud-native firewalls, cloud-native application protection and code security. We deliver a holistic approach to cloud security, offering a single unified platform, consolidating protection across multiple disparate tools, including coding, deploying, and running applications across hybrid and multi-clouds. Additionally, we also offer flexible consumption licensing programs that enable organizations to dynamically optimize their cloud security needs and investments as well as readily meet their cloud minimum spend commitment obligations with Cloud Service Providers. We continue to develop all the core SASE capabilities in a single operating system, FortiOS, including Next-Gen Firewall, SD-WAN, ZTNA, secure web gateway, cloud access security broker, and DLP. This native integration of our Next-Gen Firewall, SD-WAN, and SASE has become the New-Generation SASE Firewall.

Current wording

•Unified Secure Access Service Edge (SASE)—As applications move to the cloud and hybrid workforce is now the norm, enabling secure access for users with zero trust framework becomes important. The Fortinet Unified SASE solution includes a single-vendor SASE solution that includes firewall, SD-WAN, secure web gateway, cloud access services broker, Data Loss Prevention (“DLP”), Digital Experience Monitoring and ZTNA to deliver flexible secure access for all users. We are one of the few vendors to deliver consistent convergence and AI-powered security across Secure SD-WAN and SSE to enable a single-vendor SASE framework with a cloud-centric architecture powered by FortiOS. Our global and scalable cloud network includes over 200 PoPs to deliver a seamless secure access experience. Leveraging this global infrastructure, we believe we are well positioned to support customers expanding from SD-WAN to a single-vendor SASE platform. We also allow our customers to deploy our FortiSASE as Sovereign SASE, which provides control over the technology elements needed for a SASE solution. FortiSASE Sovereign delivers full SASE capabilities within infrastructure environments that organizations control, including on-premises, in private data centers or trusted colocation environments. Additionally, we offer a full suite of integrated cloud security solutions that enable customers to secure their applications from code to cloud. Our solutions include application security that includes web application firewalls, cloud network security with virtualized firewalls and cloud-native firewalls, cloud-native application protection and code security. We deliver a holistic approach to cloud security, offering a single unified platform, consolidating protection across multiple disparate tools, including coding, deploying, and running applications across hybrid and multi-clouds. Additionally, we also offer flexible consumption licensing programs that enable organizations to dynamically optimize their cloud security needs and investments as well as readily meet their cloud minimum spend commitment obligations with Cloud Service Providers. We continue to develop all the core SASE capabilities in a single operating system, FortiOS, including Next-Gen Firewall, SD-WAN, ZTNA, secure web gateway, cloud access security broker and DLP. This native integration of our Next-Gen Firewall, SD-WAN and SASE has become the New-Generation SASE Firewall.

Previous wording

•AI-Driven Security Operations (SecOps)—Our AI-Driven SecOps portfolio provides a comprehensive suite of cybersecurity solutions that identify, protect, detect, respond and recover from threats, all integrated within the Fortinet Security Fabric. At the core is FortiAnalyzer, which serves as the central SOC platform with its unified data lake that provides built-in Security information and event management (“SIEM”), Security, orchestration, automation, and response (“SOAR”), XDR and threat intelligence, enabling centralized visibility, analytics and automation with complete control. FortiSIEM delivers robust security information and event management for more advanced SOC requirements, while FortiSOAR enables automated orchestration and playbook-driven response. This solution set also includes FortiEDR, FortiXDR, FortiNDR, FortiSandbox, FortiDeceptor, FortiDLP and FortiRecon, helping organizations achieve defense in depth, ensuring attackers face multiple layers of detection and mitigation across endpoints, networks, and applications. To bolster their security posture, organizations contending with staff shortages can tap into FortiGuard services, including SOC-as-a-Service, Managed detection and response, Security Posture Assessment and Incident Response. Finally, FortiAI generative AI assistance streamlines operations, helping security teams stay ahead of an ever-evolving threat landscape.

Current wording

•AI-Driven Security Operations (SecOps)—Our AI-Driven SecOps portfolio provides a suite of cybersecurity solutions that identify, protect, detect, respond and recover from threats, all integrated within the Fortinet Security Fabric. At the core is FortiAnalyzer, which serves as the central SOC platform with its unified data lake that provides built-in Security information and event management (“SIEM”), Security, orchestration, automation, and response (“SOAR”), Extended Detection and Response and threat intelligence, enabling centralized visibility, analytics and automation with complete control. FortiSIEM delivers security information and event management for more advanced SOC requirements, while FortiSOAR enables automated orchestration and playbook-driven response. This solution set also includes FortiEndpoint, FortiNDR, FortiSandbox, FortiDeceptor, FortiDLP and FortiRecon, helping organizations achieve defense in depth, ensuring attackers face multiple layers of detection and mitigation across endpoints, networks, and applications. To bolster their security posture, organizations contending with staff shortages can tap into FortiGuard services, including SOC-as-a-Service, Managed detection and response, Security Posture Assessment and Incident Response. Finally, FortiAI GenAI assistance streamlines operations, helping security teams stay ahead of an ever-evolving threat landscape.

Previous wording

FortiGuard Labs is our cybersecurity threat intelligence and research organization comprised of experienced threat hunters, researchers, analysts, engineers and data scientists who develop and utilize Machine Learning (“ML”) and AI technologies to provide timely protection updates and actionable threat intelligence for the benefit of our customers. Using millions of global network sensors, FortiGuard Labs monitors the worldwide attack surface and employs AI to mine that data for new threats.

Current wording

FortiGuard Labs is our cybersecurity threat intelligence and research organization comprised of experienced threat hunters, researchers, analysts, engineers and data scientists who develop and utilize ML and AI technologies to provide timely protection updates and actionable threat intelligence for the benefit of our customers. Using millions of global network sensors, FortiGuard Labs monitors the worldwide attack surface and employs AI to mine that data for new threats.

Previous wording

FortiCare Technical Support Service is a per-device technical support service, which provides customers access to experts to ensure efficient and effective operations and maintenance of their Fortinet capabilities. Global technical support is offered 24x7 with flexible add-ons, including enhanced service-level agreements and priority hardware replacement through in-country and local depots. Organizations have the flexibility to procure different levels of service for different devices based on their availability needs. We offer three per-device support options tailored to the needs of our enterprise customers: FortiCare Elite, FortiCare Premium and FortiCare Essential. The FortiCare Elite service aims to provide a 15-minute response time for key product families.

Current wording

FortiCare Technical Support Service is a technical support service, which provides customers access to experts to ensure efficient and effective operations and maintenance of their Fortinet solution. Global technical support is offered 24x7 with flexible add-ons, including enhanced service-level agreements and priority hardware replacement through in-country and local depots. Organizations have the flexibility to procure different levels of service for different solutions based on their availability needs. We offer three support options tailored to the needs of our enterprise customers: FortiCare Elite, FortiCare Premium and FortiCare Essential. The FortiCare Elite service aims to provide a 15-minute response time for key product families.

Previous wording

In addition to FortiCare device level services, Advanced Support service options are available per account. These services are available for regional account support in three options: Core, Pro and Pro Plus, and can be available or provided on a global basis at the Pro and Pro Plus levels. Advanced Support brings support directly to each account, helping account holders to make their operations more effective and to plan and manage their solution lifecycle.

Current wording

In addition to FortiCare solution based services, Advanced Support service options are available per account. These services are available for regional account support in three options: Core, Pro and Pro Plus, and can be available or provided on a global basis at the Pro and Pro Plus levels. Advanced Support brings support directly to each account, helping account holders to make their operations more effective and to plan and manage their solution lifecycle.

Previous wording

•Total gross profit was $1.39 billion and $3.95 billion during the three and nine months ended September 30, 2025, an increase of 12% and 15%, respectively, compared to $1.24 billion and $3.45 billion in the same periods last year.

Current wording

•Total gross profit was $1.49 billion during the three months ended March 31, 2026, an increase of 19%, compared to $1.25 billion in the same period last year.

Previous wording

•Total gross margin was 80.8% during the three and nine months ended September 30, 2025, a decrease of 1.7 percentage points and an increase of 0.4 percentage points, respectively, compared to 82.5% and 80.4% in the same periods last year.

Current wording

•Total gross margin was 80.3% during the three months ended March 31, 2026, a decrease of 0.7 percentage points, compared to 81.0% in the same period last year.

Previous wording

•Cash, cash equivalents, short-term and long-term investments were $3.41 billion as of September 30, 2025.

Current wording

•Cash, cash equivalents, short-term and long-term investments were $3.63 billion as of March 31, 2026.

Previous wording

•Deferred revenue was $6.65 billion, including short-term deferred revenue of $3.46 billion, as of September 30, 2025.

Current wording

•Deferred revenue was $7.35 billion, including short-term deferred revenue of $3.73 billion, as of March 31, 2026.

Previous wording

•Cash flows from operating activities were $1.97 billion during the nine months ended September 30, 2025, an increase of $189.9 million, or 11%, compared to the same period last year.

Current wording

•Cash flows from operating activities were $1.08 billion during the three months ended March 31, 2026, an increase of $213.8 million, or 25%, compared to the same period last year.

Previous wording

Revenue continues to be diversified globally, which remains a key strength of our business. During the three months ended September 30, 2025, the EMEA region, the Americas region and the APAC region contributed 41%, 40% and 19% of our total revenue, respectively, and revenue grew 19%, 9% and 16% in these regions compared to the same period last year, respectively. During the nine months ended September 30, 2025, EMEA, the Americas and APAC regions contributed 41%, 40% and 19% of our total revenue, respectively, and revenue grew by 18%, 11% and 12% in these regions compared to the same period last year, respectively.

Current wording

Revenue continues to be diversified globally, which remains a key strength of our business. During the three months ended March 31, 2026, the EMEA region, the Americas region and the APAC region contributed 42%, 40% and 18% of our total revenue, respectively, and revenue grew 25%, 17% and 15% in these regions compared to the same period last year, respectively.

Previous wording

Product revenue increased 18% and 14% during the three and nine months ended September 30, 2025, respectively, compared to the same periods last year. We experienced product revenue growth across our hardware products and software licensing, which mainly benefited from growth in secure networking hardware products and term licenses. We expect our product revenue to continue to grow for the remainder of 2025.

Current wording

Product revenue increased 41% during the three months ended March 31, 2026 compared to the same period last year. We experienced product revenue growth across our hardware products and software licensing, which mainly benefited from growth in secure networking hardware products and term licenses, including increased demand for higher performance products, deployments related to AI infrastructure, technology upgrades, upsell activity, and expansion into new use cases. Recent pricing changes also contributed a low single digit impact to product revenue growth. We expect our product revenue to continue to grow for the remainder of 2026.

Previous wording

Service revenue growth during the three and nine months ended September 30, 2025 was 13% and 14%, respectively, as compared to the same periods last year, primarily driven by the strength of our security subscription revenue, which grew 13% and 15%, respectively. The increase was primarily due to the recognition of service revenue from our growing deferred revenue balance related to FortiGuard and other security subscriptions delivered to on-premise and cloud-based environments and strength in unified SASE and SecOps. We expect our service revenue to continue to grow for the remainder of 2025.

Current wording

Service revenue growth during the three months ended March 31, 2026 was 11%, as compared to the same period last year, primarily driven by the strength of our security subscription revenue and technical support and other services revenue, which grew 11% and 12%, respectively. The increase was primarily due to the recognition of service revenue from our growing deferred revenue balance related to FortiGuard and other security subscriptions delivered to on-premise and cloud-based environments and strength in unified SASE and SecOps, as well as the recognition of revenue from our growing deferred revenue balance related to FortiCare technical support service. We expect our service revenue to continue to grow for the remainder of 2026.

Previous wording

Total gross margin decreased 1.7 percentage points during the three months ended September 30, 2025 compared to the same period last year, primarily driven by reduced benefit from net release of inventory related reserves and increased cloud service costs. Total gross margin increased 0.4 percentage points during the nine months ended September 30, 2025 compared to the same period last year, primarily driven by increased product gross margin benefiting from lower impact of inventory reserves in comparison to the nine months ended September 30, 2024. Our overall gross margin for the full year of 2025 will be impacted by service and product revenue mix and their respective gross margins. We do not expect our product gross margin to significantly change for the full year 2025 as compared to 2024. We expect our service gross margin to decrease for the full year of 2025 compared to 2024, as we expand our data center footprint and colocation and cloud hosting capacity to support the growth in our unified SASE and SecOps offerings. We currently do not expect the U.S. tariffs to have a meaningful impact on our gross margin. If tariffs increase in the future, we expect any resulting impact on our gross margin to mostly be on our hardware sales to U.S. customers.

Current wording

Total gross margin decreased 0.7 percentage points during the three months ended March 31, 2026 compared to the same period last year, primarily driven by a shift in the revenue mix to lower margin product revenue. Revenue mix shifted by 5.1 percentage points from service revenue to product revenue, as a percentage of total revenue. Our overall gross margin for the full year of 2026 will be impacted by service and product revenue mix and their respective gross margins. While we are implementing price increases to mitigate higher hardware component costs, the impact on our margins will depend on the timing and market acceptance of these adjustments. Our product gross margin may decline if these pricing actions do not fully offset rising input costs. Our service gross margin is expected to remain relatively consistent, for the full year 2026 as compared to 2025, despite continued expansion of our data center footprint and colocation and cloud hosting capacity to support the growth in our unified SASE and SecOps offerings. We currently do not expect the U.S. tariffs to have a meaningful impact on our gross margin. However, changes in trade policy, including increases in tariff rates, changes in customs or tariffs classifications, or modifications to tariff exemptions, could adversely affect our gross margin in the future, and we expect any resulting impact would primarily relate to our hardware sales to the U.S. customers.

Previous wording

Operating expenses as a percentage of revenue decreased 2.3 and 0.8 percentage points during the three and nine months ended September 30, 2025, respectively, compared to the same periods last year, mainly because our revenue growth outpaced our personnel costs growth. Headcount increased to 15,015 employees as of September 30, 2025, a 7% increase compared to 13,986 as of September 30, 2024.

Current wording

Operating expenses as a percentage of revenue decreased 2.6 percentage points during the three months ended March 31, 2026, compared to the same period last year, mainly because our revenue growth outpaced our personnel costs growth. Headcount increased to 15,311 employees as of March 31, 2026, a 5% increase compared to 14,556 as of March 31, 2025.

Previous wording

Operating margin increased 0.5 and 1.2 percentage points during the three and nine months ended September 30, 2025, respectively, driven by revenue growth exceeding expense growth, resulting in improved operating leverage. For the full year 2025, we expect operating margin to be relatively consistent to 2024. Total revenue is expected to be higher in 2025 compared to the prior year, while our expenses have also increased due to headcount investments in sales and marketing, product development and the continued investments in data centers and real estate. In addition, our operating expenses have increased compared to 2024 and we expect that trend to continue in part due to a weaker U.S. dollar compared to many foreign currencies, as a portion of our expenses are incurred and paid in currencies other than the U.S. dollar.

Current wording

Operating margin increased 1.9 percentage points during the three months ended March 31, 2026, driven by revenue growth exceeding expense growth, resulting in improved operating leverage. For the full year 2026, we expect our operating margin to decrease compared to 2025 as we continue to make strategic investments. Total revenue is expected to increase in 2026 compared to the prior year; however, our expenses are expected to outpace revenue growth, primarily reflecting investments in sales and marketing headcount, product development and the continued capital expenditures in data centers and real estate. While these strategic investments are intended to drive long-term revenue growth and market expansion, we anticipate they may result in near-term compression of our operating margins. In addition, we may experience higher operating expenses driven in part by the weakening of the U.S. dollar relative to foreign currencies, as a portion of our expenses are incurred and paid in currencies other than the U.S. dollar.

Current wording

Impact of Macroeconomic and Geopolitical and Supply Chain Developments

Previous wording

Our overall performance depends in part on worldwide economic and geopolitical conditions, such as trade policies and tariffs, GDP growth or contraction (both domestically and internationally), geopolitical instability and uncertainty, the war in Ukraine or tensions between China and Taiwan, and their impact on customer behavior. Worsening economic conditions, including tariffs, inflation, changing interest rates and other trade disruptions, slower growth, any recession, fluctuations in foreign exchange rates and other changes in economic conditions, may result in decreased sales productivity, lower growth and adversely affect our results of operations and financial performance. We have seen, and could continue to see, certain impacts on our business, results of operations, financial condition, cash flows, liquidity and capital and financial resources such as longer sales cycles, delayed purchases and increased commitments with certain suppliers and increased inventory and inventory purchase commitment reserves. For example, earlier this year the United States announced tariffs on imported goods from most countries, some of which have been temporarily suspended or adjusted from time to time. U.S. tariffs, and any new or additional retaliatory tariffs that could be imposed by other countries in response to such U.S. tariffs could have a material adverse impact on global trade, supply chains worldwide, and other worldwide economic and geopolitical conditions, which could increase our product costs for the remainder of 2025 and beyond, and also affect customer sentiment in deciding whether to purchase our products. We continue to monitor the impact of tariffs on our business.

Current wording

Our overall performance depends in part on worldwide economic and geopolitical conditions, such as trade policies and tariffs, GDP growth or contraction (both domestically and internationally), geopolitical instability and uncertainty, the war in Ukraine, tensions between China and Taiwan or conflicts in the Middle East, and their impact on customer behavior. Worsening economic conditions, including tariffs, inflation, changing interest rates and other trade disruptions, slower growth, any recession, fluctuations in foreign exchange rates and other changes in economic conditions, may result in decreased sales productivity, lower growth and adversely affect our results of operations and financial performance. We have seen, and could continue to see, certain impacts on our business, results of operations, financial condition, cash flows, liquidity and capital and financial resources such as longer sales cycles, delayed purchases and increased commitments with certain suppliers and increased inventory and inventory purchase commitment reserves. Tariffs imposed by the United States, as well as any new or additional retaliatory tariffs that could be imposed by other countries in response, could have a material adverse impact on global trade, supply chains and other worldwide economic and geopolitical conditions, which could increase our product costs and also affect customer sentiment in deciding whether to purchase our products. We continue to monitor the impact of tariffs on our business. In addition, as a result of the rapid global build-out of AI infrastructure, there is currently a global shortage of memory chips, which are a component in certain of our products. As a result, we are currently experiencing, and may continue to experience, constraints on the availability of memory chips, which may lead to delays in the production and delivery of our products and increased costs to source available memory chips, any of which could harm our business, financial condition and results of operations. To mitigate increased hardware costs resulting from these shortages, we are implementing price increases, which may negatively impact demand for our products and may not be sufficient or timely to offset rising input costs, potentially resulting in margin compression and adversely affecting our business, financial condition and results of operations.

Previous wording

Worsening economic conditions may have a material negative impact on our results in future periods and may negatively impact our billings, revenue and costs, and may decrease growth and profitability. The extent of the impact of economic conditions on our operational and financial performance will depend on ongoing developments, including those discussed above and others identified in Part II, Item 1A “Risk Factors” in this Form 10-Q. Given the dynamic nature of these circumstances, the full impact of worsening economic conditions on our business and operations, results of operations, financial condition, cash flows, liquidity and capital and financial resources cannot be reasonably estimated at this time.

Current wording

Worsening economic, geopolitical and supply chain developments may have a material negative impact on our results in future periods and may negatively impact our billings, revenue and costs, and may decrease growth and profitability. The extent of the impact of such conditions on our operational and financial performance will depend on ongoing developments, including those discussed above and others identified in Part II, Item 1A “Risk Factors” in this Form 10-Q. Given the dynamic nature of these circumstances, the full impact of worsening economic, geopolitical and supply chain developments on our business and operations, results of operations, financial condition, cash flows, liquidity and capital and financial resources cannot be reasonably estimated at this time.

Previous wording

Deferred revenue. Our deferred revenue consists of amounts that have been invoiced but that have not yet been recognized as revenue. The majority of our deferred revenue balance consists of the unrecognized portion of service revenue from FortiGuard and other security subscriptions and FortiCare technical support service contracts, which is recognized as revenue ratably over the service term. We monitor our deferred revenue balance, short-term and total deferred revenue growth and the mix of short-term and long-term deferred revenue because deferred revenue represents a significant portion of free cash flow and of revenue to be recognized in future periods. Deferred revenue was $6.65 billion as of September 30, 2025, an increase of $289.5 million, or 5%, from December 31, 2024. Short-term deferred revenue was $3.46 billion as of September 30, 2025, an increase of $184.3 million, or 6%, from December 31, 2024.

Current wording

Deferred revenue. Our deferred revenue consists of amounts that have been invoiced but that have not yet been recognized as revenue. The majority of our deferred revenue balance consists of the unrecognized portion of service revenue from FortiGuard and other security subscriptions and FortiCare technical support service contracts, which is recognized as revenue ratably over the service term. We monitor our deferred revenue balance, short-term and total deferred revenue growth and the mix of short-term and long-term deferred revenue because deferred revenue represents a significant portion of free cash flow and of revenue to be recognized in future periods. Deferred revenue was $7.35 billion as of March 31, 2026, an increase of $235.7 million, or 3%, from December 31, 2025. Short-term deferred revenue was $3.73 billion as of March 31, 2026, an increase of $90.3 million, or 2%, from December 31, 2025.

Previous wording

Billings (non-GAAP). We define billings as revenue recognized in accordance with GAAP plus the change in deferred revenue from the beginning to the end of the period less any deferred revenue balances acquired from business combinations during the period. We consider billings to be a useful metric for management and investors because billings drive current and future revenue, which is an important indicator of the health and viability of our business and cash flows. There are a number of limitations related to the use of billings instead of GAAP revenue. First, billings include amounts that have not yet been recognized as revenue and are impacted by the term of security subscription and support agreements. Second, we may calculate billings in a manner that is different from peer companies that report similar financial measures. Management accounts for these limitations by providing specific information regarding GAAP revenue and evaluating billings together with GAAP revenue. Total billings were $1.81 billion for the three months ended September 30, 2025, an increase of 14% compared to $1.58 billion in the same period last year.

Current wording

Billings (non-GAAP). We define billings as revenue recognized in accordance with GAAP plus the change in deferred revenue from the beginning to the end of the period. We consider billings to be a useful metric for management and investors because billings drive current and future revenue as well as cash flows. There are a number of limitations related to the use of billings instead of GAAP revenue. First, billings are impacted by the term of security subscription and support agreements and do not provide an indication as to the timing of revenue being recognized from these service contracts. Second, we may calculate billings in a manner that is different from peer companies that report similar financial measures. Management accounts for these limitations by providing specific information regarding GAAP revenue and evaluating billings together with GAAP revenue. Total billings were $2.09 billion for the three months ended March 31, 2026, an increase of 31% compared to $1.60 billion in the same period last year.

Previous wording

Free cash flow (non-GAAP). We define free cash flow as net cash provided by operating activities minus purchases of property and equipment and excluding any significant non-recurring items. We believe free cash flow to be a liquidity measure that provides useful information to management and investors about the amount of cash generated by the business that, after capital expenditures, can be used for strategic opportunities, including repurchasing outstanding common stock, investing in our business, making strategic acquisitions and strengthening the balance sheet. A limitation of using free cash flow rather than the GAAP measures of cash provided by or used in operating activities, investing activities, and financing activities is that free cash flow does not represent the total increase or decrease in the cash and cash equivalents balance for the period because it excludes cash flows from significant non-recurring items, investing activities other than capital expenditures and cash flows from financing activities. Management accounts for this limitation by providing information about our capital expenditures and other investing and financing activities on the condensed consolidated statements of cash flows and under “Liquidity and Capital Resources” and by presenting cash flows from investing and financing activities in our reconciliation of free cash flow. In addition, it is important to note that other companies, including companies in our industry, may not use free cash flow, may calculate free cash flow in a different manner than we do or may use other financial measures to evaluate their performance, all of which could reduce the usefulness of free cash flow as a comparative measure. A reconciliation of net cash provided by operating activities, the most directly comparable financial measure calculated and presented in accordance with GAAP, to free cash flow is provided below:

Current wording

Free cash flow (non-GAAP). We define free cash flow as net cash provided by operating activities minus purchases of property and equipment and excluding any significant non-recurring items, such as proceeds from IP matters. We believe free cash flow to be a liquidity measure that provides useful information to management and investors about the amount of cash generated by the business that, after capital expenditures and net of proceeds from IP matters, can be used for strategic opportunities, including repurchasing outstanding common stock, investing in our business, making strategic acquisitions and strengthening the balance sheet. A limitation of using free cash flow rather than the GAAP measures of cash provided by or used in operating activities, investing activities, and financing activities is that free cash flow does not represent the total increase or decrease in the cash and cash equivalents balance for the period because it excludes cash flows from significant non-recurring items, such as proceeds from IP matters, investing activities other than capital expenditures and cash flows from financing activities. Management accounts for this limitation by providing information about our proceeds from IP matters, our capital expenditures and other investing and financing activities on the condensed consolidated statements of cash flows and under “Liquidity and Capital Resources” and by presenting cash flows from investing and financing activities in our reconciliation of free cash flow. In addition, it is important to note that other companies, including companies in our industry, may not use free cash flow, may calculate free cash flow in a different manner than we do or may use other financial measures to evaluate their performance, all of which could reduce the usefulness of free cash flow as a comparative measure. A reconciliation of net cash provided by operating activities, the most directly comparable financial measure calculated and presented in accordance with GAAP, to free cash flow is provided below:

Previous wording

There were no material changes to our critical accounting policies and estimates as of and for the nine months ended September 30, 2025, as compared to the critical accounting policies and estimates described in our Annual Report on Form 10-K filed with the SEC on February 21, 2025 (the “Form 10-K”).

Current wording

There were no material changes to our critical accounting policies and estimates as of and for the three months ended March 31, 2026, as compared to the critical accounting policies and estimates described in our Annual Report on Form 10-K filed with the SEC on February 25, 2026 (the “Form 10-K”).

Previous wording

Total revenue increased $216.8 million, or 14%, during the three months ended September 30, 2025 compared to the same period last year. We continued to experience diversification of revenue geographically, and across customer and industry verticals. Revenue from all regions grew, with EMEA contributing the largest portion of the increase on an absolute dollar basis and on a percentage basis.

Current wording

Total revenue increased $309.9 million, or 20%, during the three months ended March 31, 2026 compared to the same period last year. We continued to experience geographically diversified revenue, as well as diversification across customer and industry verticals. Revenue from all regions grew, with EMEA contributing the largest portion of the increase on an absolute dollar basis and on a percentage basis.

Previous wording

Product revenue increased $85.4 million, or 18%, during the three months ended September 30, 2025 compared to the same period last year. We experienced product revenue growth across our hardware products and software licensing, mainly driven by growth in secure networking hardware products and term licenses.

Current wording

Product revenue increased $186.0 million, or 41%, during the three months ended March 31, 2026 compared to the same period last year. We experienced product revenue growth across our hardware products and software licensing, mainly driven by growth in secure networking hardware products and term licenses, including increased demand for higher performance products, deployments related to AI infrastructure, technology upgrades, upsell activity, and expansion into new use cases. Recent pricing changes also contributed a low single digit impact to product revenue growth.

Previous wording

Service revenue increased $131.4 million, or 13%, during the three months ended September 30, 2025 compared to the same period last year. Security subscription revenue increased $76.2 million, or 13%, and technical support and other services revenue increased $55.2 million, or 13%, during the three months ended September 30, 2025 compared to the same period last year. The increase was primarily due to the reco gnition of revenue from our growing deferred revenue balance related to FortiGuard and other security subscriptions delivered to on-premise and cloud-based environments and growth in SaaS solutions, including unified SASE and SecOps.

Current wording

Service revenue increased $123.9 million, or 11%, during the three months ended March 31, 2026 compared to the same period last year. Security subscription revenue increased $70.9 million, or 11%, and technical support and other services revenue increased $53.0 million, or 12%, during the three months ended March 31, 2026 compared to the same period last year. The increase was primarily due to the reco gnition of revenue from our growing deferred revenue balance related to FortiGuard and other security subscriptions delivered to on-premise and cloud-based environments and growth in SaaS solutions, including unified SASE and SecOps, as well asthe recognition of revenue from our growing deferred revenue balance related to FortiCare technical support service.

Previous wording

Of the service revenue recognized during the nine months ended September 30, 2025 and 2024, 77% was included in the deferred revenue balance as of December 31, 2024 and 2023 in each period.

Current wording

Of the service revenue recognized during the three months ended March 31, 2026 and 2025, 90% was included in the deferred revenue balance as of December 31, 2025 and 2024, respectively.

Showing the first 40 of 64 pairs. Open the source sections for the rest.

Rearranged current paragraphs (1)

Current report — wording carried from elsewhere

•our expectation to have sufficient liquidity to meet our operating requirements for at least the next 12 months and thereafter for the foreseeable future;
Rearranged previous paragraphs (7)

Previous report — wording carried elsewhere

Of the service revenue recognized during the three months ended September 30, 2025, 90% was included in the deferred revenue balance as of June 30, 2025. Of the service revenue recognized during thethree months ended September 30, 2024, 88% was included in the deferred revenue balance as of June 30, 2024.

Previous report — wording carried elsewhere

Service gross margin decreased 0.7 percentage points during the three months ended September 30, 2025 compared to the same period last year, primarily driven by an increase in cloud service costs as a result of our acquisitions and investment in data centers and related infrastructure, partially offset by service revenue growth outpacing labor, replacement, and repair costs increase. Cost of service revenue was comprised primarily of personnel-related costs, replacement and repair costs, cloud service costs from owned data centers, colocation providers and cloud service providers, infrastructure depreciation and related operating costs, software and delivery costs, and facility-related costs.

Previous report — wording carried elsewhere

Total revenue increased $598.9 million, or 14%, during the nine months ended September 30, 2025 compared to the same period last year. We continued to experience diversification of revenue geographically, and across customer and industry verticals. Revenue from all regions grew, with EMEA contributing the largest portion of the increase on an absolute dollar basis and on a percentage basis.

Previous report — wording carried elsewhere

Service revenue increased $406.3 million, or 14%, during the nine months ended September 30, 2025 compared to the same period last year. Security subscription revenue increased $248.1 million, or 15%, and technical support and other services revenue increased $158.2 million, or 12%, during the nine months ended September 30, 2025 compared to the same period last year. The increase was primarily due to the recognition of revenue from our growing deferred revenue balance related to FortiGuard and other security subscriptions delivered toon-premise and cloud-based environments and growth in SaaS solutions, including unified SASE and SecOps.

Previous report — wording carried elsewhere

Cost of revenue and gross margin

Previous report — wording carried elsewhere

Research and development expense increased $84.8 million, or 16%, during the nine months ended September 30, 2025 compared to the same period last year, primarily due to an increase of $64.2 million in personnel-related costs as a result of increased headcount and compensation rates to support the development of new products and continued enhancements to our existing products and the impact of the recent acquisitions. In addition, non-personnel-related product development costs increased $23.3 million.

Previous report — wording carried elsewhere

Interest income, interest expense and other income—net