NASDAQ: VERX

The pace of change in global business, technology, and regulatory environments continues to increase. As companies expand into new geographies, adopt new distribution and eCommerce models, introduce digital products and services, and modernize their technology stacks, their exposure to transaction-based compliance obligations grows significantly. At the same time, governments are increasingly implementing new tax rules and digital reporting requirements to improve transparency and enforcement. These dynamics demand intelligent, scalable solutions that allow businesses to satisfy regulatory obligations while continuing to innovate and grow.

Vertex has pioneered tax and compliance technology for more than 45 years. Today, we serve over 4,800 direct customers, including the majority of the Fortune 500, and support compliance operations in more than 195 countries and territories. Our software delivers capabilities across transaction determination, compliance and reporting, tax data and document management, and analytics and insights, supported by deep integrations with the core enterprise applications that power global commerce. Our platform is fueled by more than one billion data-driven tax rates and rules and supports compliance across more than 20,000 jurisdictions worldwide. Vertex solutions can be deployed in cloud and hybrid environments, with implementation and professional services available to support our customers’ unique business and operational requirements.

Our Solutions

Vertex’s solutions help enterprises automate and govern transaction-based compliance across global commerce. Our platform supports the full lifecycle of indirect tax obligations, including transaction determination, digital invoicing and reporting requirements, compliance and returns, tax data and document management, and analytics and insights, all supported by pre-built integrations to leading enterprise business applications. Customers can deploy these capabilities individually or as an integrated suite on the Vertex cloud platform, or select deployment models that align with their broader enterprise technology environments.

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Tax Determination Solutions

Tax Calculation. The increasing complexity of global regulations, cross-border trade, and jurisdictional differences has made accurate tax determination a cornerstone of compliance. Our tax determination solutions enable real-time calculation of indirect taxes and applicable fees for sale and purchase transactions. Our solution includes a powerful indirect tax calculation engine that applies rules-based logic from our proprietary content database to determine taxability, identify precise taxing jurisdictions, and consistently apply the appropriate amount of tax to each transaction in real-time. Our solution supports determination for sales tax, consumer and seller use tax, VAT, communications tax, leasing tax, payroll tax, and lodging and occupancy tax, as well as a growing set of transaction-based fees imposed by various jurisdictions. With local rules and logic to ensure compliance globally, our tax engine is built to handle thousands of product stock keeping units (“SKUs”) and services across a wide range of industries and business models.

Vertex AI. Vertex AI powers intelligence across the Vertex platform to help customers operate more efficiently, reduce risk, and improve decision-making across the compliance lifecycle. Embedded directly into transaction, configuration, and compliance workflows, Vertex AI is designed to automate routine work, surface relevant insights earlier, and guide users toward better outcomes with less manual effort. By learning from patterns across tax data, content changes, and customer activity, Vertex AI helps tax teams scale their operations, respond more quickly to regulatory change, and focus their expertise where it matters most.

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Vertex AI operates across the full compliance lifecycle, supporting activities such as transaction determination, tax content interpretation, configuration management, and ongoing monitoring. Rather than requiring customers to adopt separate tools or processes, Vertex AI is integrated into the Vertex cloud platform to enhance existing workflows—automating tasks, identifying potential risks or changes that may impact tax outcomes, and delivering recommendations tailored to specific roles, tasks, or business contexts.

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Vertex’s AI capabilities include intelligent assistance for tax professionals, automated analysis of tax content changes to identify potential impacts to product taxability or configuration, and natural-language driven tools that simplify the creation and management of tax rules. Together, these capabilities are designed to reduce manual effort, improve consistency, and help customers maintain compliance in an environment of constantly changing regulations.

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In addition to platform-embedded AI capabilities, in 2025, Vertex launched Smart Categorization, an AI-powered solution designed to reduce the manual effort required to map product SKUs to the correct tax categories across jurisdictions. Smart Categorization helps retail tax teams improve accuracy and efficiency by learning from historical classification patterns and applying them consistently at scale, reducing the time and resources required to maintain product taxability mappings as catalogs and regulations change.

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Pre-Built Integrations. Our solutions are supported by a suite of powerful, pre-built integrations that enable real-time coordination between our solutions and major business applications, such as Adobe/Magento, Coupa, Microsoft Dynamics, NetSuite, Oracle, Salesforce, SAP, SAP Ariba, Shopify, Workday, and Zuora, among many others. Much more than traditional application programming interfaces, our integrations include mapping data fields, business logic and configurations to improve the processing of transactions to and from our solutions. The majority of our integrations are designed, tested, and supported by us. We also allow for partner-developed integrations as part of a rigorous certification program.

Industry-Specific Solutions. We offer a range of solutions that support certain industries that have specific indirect tax needs, such as retail, communications, and leasing. For example, our retail solution supports omnichannel transactions spanning store kiosks, eCommerce websites, catalog sales, and mobile device transactions. Our communications solution supports the determination of taxes, surcharges, and fees affecting U.S. providers of communication services, including wireless, voice-over-IP, satellite, internet, and video and audio streaming services. We have pre-built integrations specific to the leading providers of business applications used in these industries.

Technology Specific Solutions – Chain Flow Accelerator, SAP-specific tools. We offer a number of technology solutions that offer tools and enhancements to certain ecosystems, like SAP or Oracle, which are deeply integrated into their technology stack. For example, our Chain Flow Accelerator tool allows configuration of tax specific flows within the SAP stack. In addition, we offer an SAP specific tool set that provides customers the ability to maintain, analyze, and validate tax data in procure-to-pay as well as sales and billing systems that enhance its usefulness for indirect taxes as well as other business applications.

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Document Management. Our document management solutions automate the validation and storage of, and tax audit support for, sales tax exemptions and reseller certificates, enabling enterprises to manage large quantities of documents, such as tax exemption certificates, to ensure accurate tax determination.

Compliance and Reporting Solutions

Returns and Filings. Our global compliance and reporting solutions enable the automation of signature-ready returns and remittance of indirect tax to appropriate jurisdictions. Companies use these solutions to leverage tax data files imported from Vertex or third-party applications to establish visible audit trails of tax determinations and user-made adjustments. Our solutions also include workflow management tools, such as calendar and document management, and role-based security and event logging, which supports our customers’ internal control over financial reporting and compliance with the Sarbanes-Oxley Act of 2002. We support e-filing and print formats for returns, schedules, worksheets, tax reports and payment requests, and provide archiving and retrieval of all filings. Our returns automation solution for sales and use tax, VAT, and goods and services tax simplify recurring compliance requirements, reducing manual effort and ensuring accurate filings and remittance across geographies. These solutions also enable a unified view of real-time reporting and periodic returns for one-click reconciliation across every country where business is transacted.

E-invoicing. As governments accelerate digitization, compliance is increasingly shifting from periodic reporting toward structured, transaction-level oversight. We offer a global solution which delivers a unified foundation for e-invoicing and digital compliance that continuously evolves alongside regulatory changes, positioning enterprises to scale confidently as enforcement models advance enterprises to operationalize e-invoicing at global scale while strengthening control over structured transaction data across regulatory and business ecosystems. Our platform supports the end-to-end lifecycle of compliant electronic invoices from creation and data enrichment through validation, submission, and clearance, where required, in accordance with jurisdictional mandates. Our platform is designed to address a wide spectrum of government frameworks, support clearance, continuous transaction controls, digital reporting, and hybrid models by enabling the accurate flow of structured invoice data between enterprises, tax authorities, and trading partners. Beyond core invoicing processes, we facilitate the exchange and governance of structured business documents that accompany commercial transactions, helping organizations standardize data, streamline partner connectivity, and reduce manual intervention across financial workflows. The solution integrates with leading ERP and financial systems and supports localized formats, connectivity protocols, and exchange mechanisms required to operate across diverse compliance environments. Our solution currently operates within 38 countries and is actively expanding into new jurisdictions as regulations change. In 2025, we also partnered with NITIS SAS (“Brinta”) to accelerate and expand our compliance and e-invoicing capabilities in Latin America.

Audit and Planning Solutions

Tax Data Management. Our tax data management tools enable enterprises to unify transaction data from multiple business applications and sources. These solutions enable tax teams to view detailed transaction-level tax data, identify anomalies or errors, and establish necessary rules to address gaps in data and audit logs for any adjustments or corrections that have been made.

Analytics and Insights. Our analytics and insights tools improve data quality and provide data intelligence to optimize the end-to-end tax process and improve business outcomes.

Services Solutions

Implementation Services. Due to the ubiquitous nature of our software in our customers' technology environments, we also offer implementation services to enable our customers to realize the full benefit of our solution at initial deployment. These software implementation services include configuration, data migration and implementation, and premium support and training.

Managed Services. Customers can also license indirect tax returns outsourcing as a managed service for compliance in the U.S. and Canada. These managed services include indirect tax return preparation, filing and tax payment, and notice management.

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Our Tax Content

All our software and solutions are underpinned by our proprietary content database, which currently supports over a billion effective tax rules. Our content quality and accuracy are key components of our software subscriptions revenue and customer value and are supported by over 45 years of tax knowledge and experience. Our content quality and accuracy are critical to the longevity of our customer relationships. On a monthly basis, our content team combines legislative research, analysis, technical logic, and automation to embed updated rules into our software. Unlike many enterprise software solutions where maintenance and support are focused solely on periodic technology upgrades, our monthly updates are a critical element of allowing our customers to ensure that they are utilizing the latest tax changes to accurately calculate their indirect taxes.

Our Technology

Our software and solutions are built upon a robust set of technology capabilities designed for the flexibility, configurability, speed, and scale to handle complex tax scenarios and processing volumes, and interoperability across core business applications.

●Platform Approach To Cloud Solution. Vertex Cloud is a cloud-native platform that orchestrates compliance at scale, enabling end-to-end orchestration of tax workflows with unified, tax-ready data and purpose-built AI to drive greater efficiency, a connected user experience, and real-time insights. This unified data model reduces variability and creates consistent data structures—critical prerequisites for enhanced workflow automation—through AI-driven classification, prediction, and decision support.

●AI Orchestration. Vertex AI is a natural evolution from Vertex Cloud, extending the platform’s cloud native orchestration with intelligence that adapts to complex scenarios, identifies exceptions, and enables a new system of action. By building on the multitenant cloud foundation, Vertex AI features benefit from shared data models, unified interfaces, and cross application consistency making AI outputs more reliable and easier for customers to adopt at scale. Vertex AI is an accelerator for operational efficiency. By reducing manual steps in processes like configuration, filing, and reporting, AI increases throughput, improves accuracy, and mitigates risk, by identifying anomalies. Vertex AI enables platform-wide intelligence, rather than only point solutions and is embedded across the entire compliance and tax lifecycle, automating workflows, learning from patterns, detecting risks earlier, and tailoring recommendations to outcome or task specific contexts.

●Real-Time Engine. Our real-time engine determines the appropriate tax rules to apply to a line item in a transaction through a sequence of real-time processes that combine tax algorithms and tax content with transaction line-item level detail. Combining tax content stored as structured data with sequencing and decision tree logic results in one or more individual tax rules that are applied to each line item in a transaction. This is built within memory and cached for performance. The in-memory processes of the core calculation engine are tuned to accommodate high-volume and complex transactions at speed and scale.

●Configuration. Our solutions are built to be highly configurable. Through our graphical user interfaces, users can configure and map their taxability to ensure the correct tax rules are executed. Our flexibility in configuration also extends to users who can create their own taxability rules, as appropriate. These user-defined taxability rules act as an override, providing flexibility to ensure that non-standard tax scenarios and processes can be addressed. Additionally, users can augment transactions entering and exiting the engine by building their own logic through our drag-and-drop experience. This logic is saved to then execute within the engine.

●Tax Geography. Accuracy in determining the appropriate taxation of a transaction depends on many factors, including detailed location information for where a transaction is occurring. We designed and created a proprietary solution for tax jurisdiction identification that leverages industry geographic information system tools and geospatial data. With our proprietary technology we are able to create and map multiple tax jurisdictions for a particular location and assign a unique identifier to each location so that it can be used by the engine to allow for higher accuracy. This technology is highly relevant to emerging economic shifts, such as the sharing economy, where the physical nexus of transactions is unclear, such as ride-sharing services.

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●Security. Our application security framework allows our customers to define how users can interact with sensitive enterprise data and how they are authorized to use certain aspects of our software. Users are mapped to a set of predefined roles, and we provide our customers with the ability to create user-defined roles. User-defined role-based access can be defined on a screen-by-screen level and further refined with read and/or write privileges.

●Cloud Solutions. We provide cloud services from six geographically separate data centers located on two continents: North America and Europe. The data centers are paired for failover of operations to an alternate, geographically separate production facility in case any single data center becomes unavailable. All data centers are operated by leading vendors providing physical security, internet access, environmental controls, and data retention services.

Our Customers

Today, we serve a large, diverse, and growing global customer base. Our market leadership in key industries can be demonstrated by our relationships with many of the largest and most well-known companies in retail trade, wholesale trade, and manufacturing. Our customers include the majority of the Fortune 500, as well as a majority of the top 10 companies by revenue in industries such as retail, technology, and manufacturing, in addition to leading digital marketplaces. Our customer base also includes many of Europe’s largest companies in the industrial and chemical manufacturing, pharmaceutical, medical device and metals and mining industries. Many of these companies have highly distributed global supply chains and distribution networks, which create complexity in managing cross-border taxation and country-specific compliance and reporting mandates. We have significant expansion opportunities with our customers, driven by our growing product portfolio and geographic coverage.

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A distinct and growing subset of our customer base includes digital marketplaces and various professional service providers, including accounting firms and outsourcing firms. Our robust technology and deep tax content differentiate us in our ability to serve the indirect tax needs of 9 of the top 10 E-commerce sites in the U.S. These customers support tens of thousands of merchants who rely on their platform for their eCommerce transaction processing. We also support service providers such as outsourcing and accounting firms who use our technology to calculate tax and file tax returns for their end-customers. While we include these marketplaces and service providers in our customer counts, the tens of thousands of their end-user customers are not included in our customer counts.

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As of December 31, 2025, we had 4,867 direct customers and our Annual Recurring Revenue (“ARR”) per customer was $137,867. While most of our revenue is currently generated by customers domiciled in the U.S., many of our customers are multinational organizations with global business operations. We also provide tax software solutions outside the U.S., primarily in Canada and Europe. For the years ended December 31, 2025 and 2024, approximately 10% and 8%, respectively, of our revenue was generated outside of the U.S. Additionally, no single customer represented more than 10% of our total revenue for the years ended December 31, 2025 or 2024.

Our Growth Strategies

We believe today’s global commerce environment provides durable growth opportunities for our business. Our growth strategies include:

●Retention and expansion of revenues from existing customers. The breadth of our solutions allows us to continually meet our customer needs, even as their needs expand in scope. For example, customers initially investing in sales tax determination may need support for other tax types, jurisdictions, and capabilities to manage their indirect tax lifecycle over time. Our continued investments in global compliance and e-invoicing solutions provides additional opportunities for revenue expansion from existing customers. As new and changing e-invoicing mandates proliferate, we believe our customers will continue to adopt our unified, global solution to confidently scale their e-invoicing and compliance operations. As our customers evolve through acquisitions, expand their products and services, enter new geographies, and enhance their distribution channels, we believe their need for our software, services, and content will also grow. We plan to continue to invest in new innovations and enhance our solutions to support the ongoing retention and expansion of revenue from our existing customers. Our flexible, tiered revenue-based pricing model also results in our customers growing their spend with us as they grow and continue to use our solutions.

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●Acquire new customers. We believe the market for our software and solutions is large and underpenetrated, both in the U.S. and globally. As enterprise and mid-market companies continue to expand their business operations and their tax complexity grows, we expect demand for our solutions to increase among new customers and partners. We also expect these companies to adopt our solutions much earlier in their corporate lifecycle. This adoption is driven by advances in cloud computing and digital commerce, which enable more companies to accelerate new product delivery and scale their business through online marketplaces and emerging commerce platforms. These increases in business complexity necessitate advanced tax solutions for a broader number of companies. We plan to continue to invest in our direct sales, indirect sales, and partnership marketing teams, and our solution development to capture this demand increase and acquire new customers.

●Broaden and deepen our partner ecosystem. We integrate with key technology partners that span enterprise resource planning (“ERP”), customer relationship management (“CRM”), procurement, billing, point of sale (“POS”), and eCommerce platforms. Our partners enhance our go-to-market capacity and extend our brand leadership and reach. We leverage our partnerships to maximize the benefits of our solutions for our customers and to identify new growth opportunities. We believe expanding our strategic alliances with emerging participants who are fueling global commerce, such as payment and digital commerce platforms, will create new value for our customers and new sources of revenue. In 2025, we partnered with Kintsugi AI, Inc. (“Kintsugi”), an AI-native startup, to launch Kintsugi powered by Vertex. Kintsugi powered by Vertex is a solution which automates key tax compliance functions for small- and medium-sized businesses in an AI experience built for agility and scale while being powered by the Vertex tax engine that delivers the trusted accuracy and global content enterprises rely on. This partnership is also being leveraged to accelerate our AI innovation and enable lead referrals in the small- and medium-sized business segment.

●Extend global footprint. We have a significant opportunity to further expand internationally, in terms of our regional operations, content depth, and go-to-market coverage. We expect to continue to invest in our software and solutions outside of the U.S., most notably in Latin America and Europe. These jurisdictions are among the most complex and the largest international markets for our customers. We have also made significant investments in our own operations in these regions. In Europe and Brazil, for example, we have tailored our go-to-market strategy, enhanced our country-specific content database, and furthered our investment in our global compliance reporting solution. Another example in Europe includes leveraging our recent acquisition of ecosio GmbH (“ecosio”) and our e-invoicing solution to enable companies to stay compliant with current and emerging local VAT regulations, as well as positioning us to expand into new markets as individual country mandates continue to develop. By extending our global footprint, we believe we will also expand account penetration of existing customers with operations around the globe.

●Sustained investment in new product innovation. With the pace of change in commerce and compliance, we believe it is important to continue innovating and extending the functionality and breadth of our software and solutions. Our approach to innovation is driven by our relationships with our customers and partners, with whom we create new solutions, align product roadmaps, and embed our software within their applications and platforms. We have also created and invest in an innovation lab where we design, test, and incubate next generation tax solutions and adjacent market opportunities. Over time, we expect such investment will bring additional value to existing customers and help us acquire new customers.

Sales and Marketing

We license our software and solutions primarily through our direct and indirect sales organization, with a focus on enterprise and midmarket businesses that have complex tax operations. Our direct sales team is comprised of inside sales and field sales, supported by our technical pre-sales and services teams. Teams are organized by territory and company size. We also have customer success teams focused on onboarding, usage, retention, renewals, and cross-selling additional products.

Our direct sales force leverages our partnerships with technology providers such as Oracle, SAP, Microsoft, and Salesforce, and a growing network of system integrators to influence and drive growth opportunities. These partnerships can include certified integrations that drive ease of implementation and rapid time-to-value for our joint customers. We leverage our relationships with professional services firms such as Deloitte, PwC, Ernst and Young, and KPMG, as well

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as over 45 other accounting and professional services firms to drive tax software adoption in partnership with their tax advisory and tax technology practices.

We also utilize indirect sales to efficiently grow and scale our revenues. Our indirect sales team focuses on building relationships with leading system integrators who implement eCommerce and other platforms, and resellers who offer our software, services, and training to their customer networks. These partnerships allow us to extend our demand generation and market reach efforts. We also extend our reach efficiently through marketplaces and service providers who use our technology to calculate tax and/or file tax returns for their end-customers.

Our marketing investments are focused on establishing and expanding our brand recognition, creating sales leads and growing our customer relationships. We generate sales leads through online and offline marketing channels, including search engine marketing, outbound lead generation, technology events and conferences, and digital marketing programs. Word-of-mouth referrals from our customers, technology partners and consulting firms further scale our market reach. We engage and grow our customer revenues through hosted events, customer advisory boards and user groups, and digital seminars. We extend brand awareness through advertising, press coverage and social media, as well as through sponsorships of industry associations such as Tax Executive Institute, Council on State Taxation, and CPA.com.

Partners

We believe the scale and quality of our ecosystem is unparalleled in the industry, and we are committed to growing it even further. Our partner ecosystem consists of multiple types of partners that provide us access to their customers and clients.

Our continued success is enabled by our seamless integration into customers’ business applications, gathering high-quality new customer leads, and collaborating with professional service providers to help our customers solve their specific tax needs. In addition to driving technological innovation and growing our range of solution offerings, expanding our partner ecosystem has been an essential part of our growth.

●Accounting & Consulting Partners. We collaborate with over 50 tax, accounting, and consulting firms, which not only complement our global, local, and industry-specific regulatory expertise but also point us towards specific commercial opportunities. Our wide range of offerings and sophisticated technology align with these firms’ areas of specialization, enabling organizations to strengthen end-to-end delivery capabilities for a diverse array of clients.

●Technology Partners. Our pre-built integrations with key partners including Adobe/Magento, Coupa, Microsoft Dynamics, NetSuite, Oracle, Salesforce, SAP, SAP Ariba, Shopify, Workday, and Zuora, among many others, are key differentiators that enable our customers to seamlessly connect our solutions into their business applications and processes. Our trusted brand reputation has allowed us to be a leading SAP and Oracle tax technology provider, with a relationship spanning many years with these vendors. Our technology software and solutions and highly scalable transaction volume throughput has earned the trust of world-class online marketplaces. These deep partnerships allow us to expand the frontier of tax technology innovation and market opportunity.

●Channel and Resellers. We continue to expand our indirect go-to-market reach to capitalize on the significant mid-market growth opportunities. These partners include value-added resellers, service providers and original equipment manufacturer relationships with technology firms, system integrators, tax consultants and industry groups such as Avanade, Acumatica, and CPA.com. These investments enable certification, training, and enablement to deliver rapid time-to-value and scale.

Research and Development

Our research and development team consists of our architecture, software engineering, user experience, infrastructure development operations automation, and technical production support teams. This organization is responsible for the design, development, testing, and delivery of new technologies, features, and integrations of our tax software and solutions, as well as the continued improvement of our existing solutions. It is also responsible for operating and scaling our software and solutions and infrastructure that run in the cloud. We continue to invest in our research and development capabilities with significant focus on emerging technologies such as edge computing, artificial intelligence/machine learning, data

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fabric/mesh platforms, blockchain, application programming interface/microservices, and containerization to extend our solutions further into the cloud and partner ecosystems to continuously deliver more value.

Competition

Our industry is highly competitive and fragmented. Businesses employ a mix of approaches to address their indirect tax obligations, including:

●in-house practices and spreadsheets that result in custom transaction-specific research, manual determination, static tax tables, or rate calculator services, as well as manual filing and remittance activities;

●businesses utilizing native ERP capabilities with rudimentary tax determination capabilities, which are typically not designed for complex tax support and lack tax rates, rules and complex calculation functionality, and require the user to manually track, input, maintain, and update all tax law changes that occur;

●outsourced transaction tax compliance services offered by accounting and specialized consulting firms; and

●tax-specific solutions from other vendors.

We believe customers consider the following factors when selecting indirect tax technologies:

●ability to minimize compliance risk exposure associated with inaccurate and/or inconsistent determination and remittance of taxes;

●the growing regulatory complexity, which may require the need for more robust or proven tax solutions;

●ability to deliver real time tax determinations;

●ease of deployment and use;

●ease of integration with the customer’s business applications, across multiple systems;

●ability to address multiple transaction tax compliance functions, from initial taxability and tax rate determination through compliance and remittance of funds;

●lower total cost of ownership; and

●continuously updated tax content applicable to the customer’s business.

Depending on the importance and complexity associated with these factors for each customer we maintain varying competitive advantages. We monitor these factors and adjust our functionalities, service offerings, pricing structures and overall solution delivery approach to continually strengthen our position.

Intellectual Property

Our success has resulted in part from our proprietary methodologies, software, reusable knowledge capital, and other intellectual property rights. We rely on a combination of copyright, trademark, and trade secret law, as well as contractual restrictions such as confidentiality and non-compete provisions to protect our intellectual property rights, including our brand, technology, and confidential information. We have policies related to security, privacy, confidentiality, ownership, and the use and protection of our intellectual property. We also enter into confidentiality and invention assignment/proprietary rights agreements with our consultants, employees, and other third parties as appropriate that protect and control access to our intellectual property, and we enforce these agreements where necessary. We recognize the value of our intellectual property in the marketplace and vigorously identify, create, and protect it. We believe the innovation of our employees and our continued enhancement of the features and functionality of our solutions is the keystone of our success.

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Human Capital

Our culture is the foundation of everything we do, guided by a common purpose to build trusted relationships at work, in business and in our communities. We strive to be a values-driven employer of choice who attracts, retains, and inspires talented professionals to achieve their full potential. Vertex received recognition in 2025 as a “Best Place to Work” from Built In, reflecting the value we place on our people and environment. We create and nurture an engaging work environment that embodies our core values of collaboration, performance, integrity, innovation, and fun, and we actively support our employees' participation in Employee Resource Groups (“ERGs”), community service, and philanthropy.

As of December 31, 2025, we had over 2,100 full-time employees. Of these employees, 73% were based in the U.S., 17% based in Europe and 10% in other countries. We believe we have a strong relationship with our employees, and we have not experienced any work stoppages.

Available Information

We file annual, quarterly, and current reports and other information with the Securities and Exchange Commission (“SEC”). The SEC maintains a website (www.sec.gov) that contains reports, proxy and information statements, and other information regarding registrants that file electronically with the SEC, including us. You may also access, free of charge, our reports filed with the SEC (for example, our Annual Reports on Form 10-K, our Quarterly Reports on Form 10-Q, and our Current Reports on Form 8-K and any amendments to those forms) through the “Investors” portion of our website (https://www.vertexinc.com/). Reports filed with or furnished to the SEC will be available as soon as reasonably practicable after they are filed with or furnished to the SEC. Our website is included in this Annual Report on Form 10-K as an inactive textual reference only. The information found on our website is not part of this or any other report filed with or furnished to the SEC.

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