Item 1. Business

Company and Segment Overview

Synopsys, Inc. provides products and services used across the entire Silicon to Software™ spectrum to bring Smart Everything to life. From engineers creating advanced semiconductors to product teams developing advanced electronic systems to software developers seeking to ensure the security and quality of their code, our customers trust that our technologies will enable them to meet new requirements for low power as well as reliability, mobility, and security.

We are a global leader in supplying the electronic design automation (EDA) software that engineers use to design and test integrated circuits (ICs), also known as chips. We also offer semiconductor intellectual property (IP) products, which are pre-designed circuits that engineers use as components of larger chip designs rather than designing those circuits themselves. We provide software and hardware used to validate the electronic systems that incorporate chips and the software that runs on them. To complement these offerings, we provide technical services and support to help our customers develop advanced chips and electronic systems. These products and services are part of our Semiconductor & System Design segment.

We are also a leading provider of software tools and services that improve the security, quality and compliance of software in a wide variety of industries, including electronics, financial services, automotive, medicine, energy and industrials. These tools and services are part of our Software Integrity segment.

Corporate Information

We incorporated in 1986 in North Carolina and reincorporated in 1987 in Delaware. Our headquarters are located at 690 East Middlefield Road, Mountain View, California 94043, and our headquarters' telephone number is (650) 584-5000. We have approximately 125 offices worldwide.

Our annual and quarterly reports on Forms 10-K and 10-Q (including related filings in XBRL format), current reports on Form 8-K, and Proxy Statements relating to our annual meetings of stockholders (including any amendments to these reports, as well as filings made by our executive officers and directors) are available through the Investor Relations page of our website (www.synopsys.com) free of charge as soon as practicable after we file them with, or furnish them to, the SEC (www.sec.gov). We use our Investor Relations page as a routine channel for distribution of important information, including news releases, investor presentations, and financial information. The contents of our website are not part of this Form 10-K.

Background

In this era of Smart Everything, we have seen a remarkable proliferation of consumer and wireless electronic products, particularly mobile devices. The growth of the Internet and cloud computing has provided people with new ways to create, store, and share information. At the same time, the increasing use of electronics in cars, buildings, appliances, and other consumer products is creating a connected landscape of smart devices. Numerous software applications (apps) have been developed to expand the potential of these connected devices. The increasing impact of artificial intelligence and machine learning is driving an increase in the activity of new and existing chip and system design companies around the world.

These developments have been fueled by innovation in the semiconductor and software industries. It is now common for a single chip to combine many components (processor, communications, memory, custom logic, input/output) and embedded software into a single system-on-chip (SoC), necessitating highly complex chip designs. The most complex chips today contain more than a billion transistors. Transistors are the basic building blocks for ICs, each of which may have features that are less than 1/1,000th the diameter of a human hair.

These devices are manufactured using masks to direct beams of light onto a wafer of silicon. At such small dimensions, the wavelength of light itself can become an obstacle to production, proving too big to create such dense features and requiring creative and complicated new approaches. Designers have turned to new manufacturing techniques to solve these problems, such as multiple-patterning lithography and FinFET, or 3D transistors, which in turn have introduced new challenges to design and production.

The popularity of mobile devices and other electronic products has increased demand for chips and systems with greater functionality and performance, reduced size, and lower power consumption. Our customers, who design those products, are facing intense pressure to deliver innovative offerings in shorter timeframes and at lower prices. In other words, innovation in chip and system design often hinges on providing products "better," "sooner," and "cheaper" than competitors. The design of these chips and systems is extremely complex and necessitates state-of-the-art solutions. Over the past several years, market verticals including AI, 5G, automotive and cloud computing infrastructure have contributed to the ongoing demand for our products and services.

A similar dynamic is at work in the software arena, whether the software is embedded on a chip or used in other applications. The pace of innovation often requires developers to deliver more secure, high-quality software, which can include millions of lines of code, in increasingly frequent release cycles. Bugs, defects, and security vulnerabilities in code can be difficult to detect and expensive to fix. But, at a time when software is critical in many industries across a growing array of smart devices, it is crucial to have high-quality, secure code to ensure consumers' privacy and safety.

Our Role-As the Silicon to Software Partner

Synopsys' Silicon to Software technologies and services are designed to help our customers-chip and system engineers and software developers-to speed time to market, achieve the highest quality of results, mitigate risk, and maximize profitability.

Chip and system designers must determine how best to design, locate, and connect the building blocks of chips, and to verify that the resulting design behaves as intended and can be manufactured efficiently and cost-effectively. This is a complex, multi-step process that is both expensive and time-consuming. Our wide range of products help at different steps in the overall design process, from the design of individual ICs to the design of larger systems. Our products increase designer productivity and efficiency by automating tasks, keeping track of large amounts of data, adding intelligence to the design process, facilitating reuse of past designs, and reducing errors. Our IP products offer proven, high-quality pre-configured circuits that are ready to use in a chip design, saving customers time and enabling them to direct resources to features that differentiate their products. Our global service and support engineers also provide expert technical support and design assistance to our customers.

Software developers are responsible for writing code that not only accomplishes its goals as efficiently as possible, but also runs securely and is free of defects. We offer products that can help developers write higher quality, more secure code by analyzing code for quality defects and known security vulnerabilities, adding intelligence and automation to the software testing process, and helping to eliminate defects in a systematic manner. As developers make use of open source software in their code, our products can help developers better manage the composition and security of the code. Our products enable software developers to catch flaws earlier in the development cycle, when they are less costly to fix.

Products and Services

Semiconductor & System Design Segment

Our Semiconductor & System Design segment includes the EDA, IP and System Integration and Other revenue categories.

EDA

Designing ICs involves many complex steps: architecture definition, register transfer level (RTL) design, functional/RTL verification, logic design or synthesis, gate-level verification, floorplanning, place and route, and physical verification, to name just a few. Designers use our EDA products to automate the IC design process, reduce errors, and enable more powerful and robust designs.

As the availability and amount of cloud-based data storage grows, also growing in EDA is customer interest in accessing EDA on the cloud, and the scalability and flexibility that cloud computing can offer to customer flows and engineering teams. This customer shift in interest has started and continues to grow. While many of our solutions have been used in cloud-based environments for years, such as in a customer's own server and/or cloud environment, we have been working directly with customers and commercial cloud vendors, including Amazon Web

Services, Microsoft Azure, Google Cloud and Alibaba Cloud, to further enhance our EDA-on-cloud products and platforms.

Our platforms comprehensively address the process, featuring a large number of EDA products that generally fall into the following categories:

•Digital and custom IC design and field programmable gate array (FPGA) design, which includes software tools to design an IC;

•Verification, which includes technology to verify that an IC design behaves as intended; and

•Manufacturing, which includes products that both enable early manufacturing process development and convert IC design layouts into the masks used to manufacture the chips.

Digital and Custom IC Design

Our Fusion Design Platform™ provides customers with a comprehensive digital design implementation solution that includes industry-leading products and redefines conventional design tool boundaries to deliver a more integrated flow than ever before, with better quality and time to results. The platform gives designers the flexibility to integrate internally developed tools as well as those from third parties. With innovative technologies, a common foundation, and flexibility, our Fusion Design Platform helps reduce design times, decrease uncertainties in design steps, and minimize the risks inherent in advanced, complex IC design. The platform supports multiple technology nodes, including advanced nodes at 12nm, 10nm, 8/7nm, 6 nm, 5/4nm, and 3nm, with technology collaborations on next-generation process technologies.

Key design products, available as part of the Fusion Design Platform, include Fusion Compiler™ RTL to GDSII design implementation, Design Compiler® logic synthesis, IC Compiler™ II physical design, Synopsys TestMAXTM test and diagnosis, PrimeTime® static timing analysis, StarRC™ parasitic extraction, IC Validator physical verification and 3DIC Compiler, the industry's first next-generation chip packaging solution, aimed at enabling customers to combine or stack multiple dice on a single chip. Many of our EDA solutions are bolstered by AI and machine learning capabilities. In addition, we offer DSO.ai™, which brings AI to the entire design process. It autonomously learns through quickly exploring potential design alternatives, enabling engineers to develop superior design outcomes with+

our design tools.

Our Custom Design Platform™ is a unified suite of design and verification tools that accelerates the transistor-level design of robust analog, mixed-signal, and custom-digital ICs. The platform features visually assisted layout automation, high-performance circuit simulation, reliability-aware verification, and natively integrated StarRC™ extraction and physical verification. Platform tools include Custom Compiler layout and schematic editor, StarRC parasitic extraction, and IC Validator physical verification. The platform also includes PrimeSim™ Continuum. Launched in 2021, the PrimeSim Continuum solution integrates PrimeSim SPICE, PrimeSim HSPICE, PrimeSim Pro and PrimeSim XA. The PrimeWave™ design environment is also included and provides comprehensive analysis and improved productivity and ease of use across all tools in PrimeSim Continuum.

Our Silicon Lifecycle Management Platform is a new data analytics-driven platform that uses in-chip monitoring and sensing to optimize all phases of the silicon lifecycle-from design and manufacturing to in-field deployment and maintenance. The platform is integrated with the Fusion Design Platform for design calibration and analytics and includes Yield Explorer® for product ramp analytics, SiliconDash for test and production analytics, TestMAX ALE (adaptive learning engine) for intelligent data extraction and communication to the SLM database and DesignWare PVT IP for in-chip monitoring and sensing.

FPGA Design

FPGAs are complex chips that can be customized or programmed to perform a specific function after they are manufactured. For FPGA design, we offer Synplify® (Pro® and Premier) implementation and Identify® debug software tools.

Verification

Our Verification Continuum® platform is built from our industry-leading and fastest verification technologies, providing virtual prototyping, static and formal verification, simulation, emulation, FPGA-based prototyping, and debug in a unified environment with verification IP, planning, and coverage technology. By providing consistent

5

compile, runtime and debug environments across the flow of verification tasks and by enabling seamless transitions across functions, the platform helps our customers accelerate chip verification, bring up software earlier, and get to market sooner with advanced SoCs.

The individual products included in the Verification Continuum platform are reported in our EDA and IP and System Integration revenue categories. The solutions reported in our EDA revenue include the following:

•VC SpyGlass™ family of static verification technologies including lint, CDC (clock domain crossing), RDC (reset domain crossing), Constraint Checking, Synopsys TestMAX Advisor, and low-power analysis and verification;

•VCS® functional verification solution, our comprehensive RTL and gate-level simulation technology, including Fine-Grained Parallelism;

•Verdi® automated debug system, the industry's most comprehensive SoC debug;

•VC Formal™, our next-generation formal verification product;

•ZeBu® emulation systems, which use high-performance hardware to emulate SoC designs so that designers can accelerate hardware, software and power verification of large complex SoCs and perform earlier verification and optimization of the SoC together with software; and

•Other principal individual verification solutions, including the PrimeSim Continuum solution and the PrimeWave™ design environment.

The verification IP, virtual prototyping, and FPGA-based prototyping solutions that are part of our Verification Continuum platform are included in our IP and System Integration category and further described below.

Manufacturing

Our Manufacturing Solutions include Sentaurus™ technology computer-aided design device and process simulation products, Proteus™ mask synthesis tools, CATS® mask data preparation software, Yield Explorer® Odyssey, Yield-Manager® yield management solutions and QuantumATK atomic-scale modeling software.

We also provide consulting and design services that address all phases of the SoC development process, as well as a broad range of expert training and workshops on our latest tools and methodologies.

IP and System Integration

IP Products

As more functionality converges into a single device or even a single chip, and as chip designs grow more complex, the number of third-party IP blocks incorporated into designs is rapidly increasing. We provide the broadest, most comprehensive portfolio of high-quality, silicon-proven IP solutions for SoCs. Our broad DesignWare IP portfolio includes:

•High-quality solutions for widely used wired and wireless interfaces such as USB, PCI Express, DDR, Ethernet, SATA, MIPI, HDMI, and Bluetooth Low Energy;

•Logic libraries and embedded memories, including memory compilers, non-volatile memory, standard cells, and integrated test and repair;

•Processor solutions, including configurable ARC® processor cores, software, Embedded Vision processor cores and application-specific instruction-set processor tools for embedded applications;

•IP subsystems for audio, sensor, and data fusion functionality that combine IP blocks, an efficient processor, and software into an integrated, pre-verified subsystem;

•Security IP solutions, including cryptographic cores and software, security subsystems, platform security and content protection IP;

•An industry-leading offering of IP for the automotive market, optimized for strict functional safety and reliability standards such as ISO 26262;

6

•Analog IP including data converters and audio codecs; and

•SoC infrastructure IP, datapath and building block IP, mathematical and floating-point components, Arm® AMBA® interconnect fabric and peripherals, and verification IP.

Our IP Accelerated initiative augments our established, broad portfolio of silicon-proven DesignWare IP with IP Prototyping Kits and customized IP subsystems to accelerate prototyping, software development, and integration of IP into SoCs.

We offer a broad portfolio of IP that has been optimized to address specific application requirements for the mobile, automotive, digital home, internet of things, and cloud computing markets, enabling designers to quickly develop SoCs in these areas.

Our Verification IP portfolio, part of our Verification Continuum platform, is also part of the IP Products category.

System Integration Solutions

Our System Integration verification solutions include the following elements of our Verification Continuum platform:

•HAPS® FPGA-based prototyping systems, which are integrated and scalable hardware-software solutions for early software development and faster time to market;

•Virtualizer™ virtual prototyping solution, which addresses the increasing development challenges associated with software-rich semiconductor and electronic products by accelerating both the development and deployment of virtual prototypes; and

•Platform Architect solution, which provides for early analysis and optimization of multi-core SoC architectures for performance and power.

We also provide a series of tools used in the design of optical systems and photonic devices. Our CODE V® solution enables engineers to model, analyze and optimize designs for optical imaging and communication systems. Our LightTools® design and analysis software allows designers to simulate and improve the performance of a broad range of illumination systems, from vehicle lighting to projector systems.

Other

Our Other revenue category includes revenue from sales of products to academic and research institutions.

Software Integrity Segment

Our Software Integrity segment helps organizations align people, processes, and technology to intelligently address software risks across their portfolio and at all stages of the application lifecycle. The testing tools, services, and programs enable our customers to manage open source license compliance and detect, prioritize, and remediate security vulnerabilities and defects across their entire software development lifecycle. Our offerings include security and quality testing products, managed services, programs and professional services, and training offered as on-premises and cloud-based delivery.

The Polaris Software Integrity PlatformTM is designed to bring our products and services together into an integrated, easy-to-use solution that enables security and development teams to build secure, high-quality software faster.

7

Key offerings in this space include:

•Intelligent Orchestration solution, which enables DevOps to build a testing pipeline that enables a company to define - within its particular policy guidelines - the rules to determine which tests to run, including the Synopsys portfolio tests, third party products, or open source tests;

•Code Dx, which correlates and prioritizes findings from the Synopsys portfolio, third party products, and open source tools, providing a comprehensive view of software security risk;

•Coverity® static analysis tools, which analyze software code to find crash-causing bugs, incorrect program behavior, the latest security vulnerabilities, memory leaks and other performance-degrading flaws;

•Black Duck™ software composition analysis tools, which scan binary and source code for license and compliance issues and other known security vulnerabilities stemming from incorporated third-party and open source code;

•Seeker® IAST tool, which identifies exploitable security vulnerabilities while web applications are running, thereby verifying results and eliminating false positives; and

•Defensics® fuzz testing tools, which examine security vulnerabilities in software binaries and libraries, particularly network protocols and file formats, by systematically sending invalid or unexpected inputs to the system under test.

Managed services allow developers to test code across many dimensions, and to rapidly respond to changing testing requirements and evolving threats. This includes Mobile Application Security Testing services to find vulnerabilities in mobile applications as well as Dynamic Application Security Testing services which identify security vulnerabilities while web applications are running, without the need for source code.

Programs and professional services address unique security and quality needs with specialized consulting by skilled experts, including the Building Security in Maturity Mode, which measures the effectiveness of software security initiatives by assessing the current state as compared to industry benchmarks, and the Black Duck™ on demand audit services, which provides open source compliance and software vulnerability assessments as part of the due diligence process for mergers and acquisitions.

Finally, training includes eLearning and instructor-led training that prepares developers and security professionals to build security and quality into their software development process and remediate found vulnerabilities and defects.

Customer Service and Technical Support

A high level of customer service and support is critical to the adoption and successful use of our products. We provide technical support for our products through both field-based and corporate-based application engineering teams.

Post-contract customer support includes providing frequent updates and upgrades to maintain the utility of the software due to rapid changes in technology. In our Semiconductor & System Design segment, post-contract customer support for our EDA and IP products also includes access to the SolvNet® Plus portal, where customers can explore our complete design knowledge database. Updated daily, the SolvNet Plus portal includes technical documentation, design tips, and answers to user questions. Customers can also engage, for additional charges, with our worldwide network of applications consultants for additional support needs.

In our Software Integrity segment, post-contract customer support for our products includes access to our support community portal, where customers can access our product documentation, self-service training materials, customer forums and our product knowledge base. Customers can also raise support tickets, request replacement license keys and validate the terms of their active license keys through the portal. Our support community portal is frequently updated with new and supplemental materials on a variety of topics. Customers may engage dedicated support engineers for an additional charge.

8

In addition, we offer training workshops designed to increase customer design proficiency and productivity with our products. Workshops cover our EDA products and methodologies used in our design and verification flows, as well as specialized modules addressing system design, logic design, physical design, simulation and testing. We offer regularly scheduled public and private courses in a variety of locations worldwide, as well as online training (live or on-demand) through our Virtual Classrooms.

Product Warranties

We generally warrant our products to be free from defects in media and to substantially conform to material specifications for a period of 90 days for our software products and for up to 6 months for our hardware products. In many cases, we also provide our customers with limited indemnification with respect to claims that their use of our software products infringes on patents, copyrights, trademarks or trade secrets. We have not experienced material warranty or indemnity claims to date.

Support for Industry Standards

We actively create and support standards that help our EDA and IP customers increase productivity, facilitate efficient design flows, improve interoperability of tools from different vendors, and ensure connectivity, functionality and interoperability of IP building blocks. Standards in the electronic design industry can be established by formal accredited organizations, industry consortia, company licensing made available to all, de facto usage, or through open source licensing.

In our Semiconductor & System Design segment, our EDA products support many standards, including the most commonly used hardware description languages: SystemVerilog, Verilog, VHDL, and SystemC®. Our products utilize numerous industry-standard data formats, APIs, and databases for the exchange of design data among our tools, other EDA vendors' products, and applications that customers develop internally. We also comply with a wide range of industry standards within our IP product family to ensure usability and interconnectivity.

In our Software Integrity segment, our solutions support several existing and emerging industry standards for software coding and security, such as the Motor Industry Software Reliability Association coding standards for the automotive industry. In addition, our products support multiple major programming languages, including C/C++, Objective C, C#, JavaScript (including many commonly used frameworks), and others. In addition, we support many common compilers, development environments, frameworks, and data and file formats.

Sales and Distribution

Our Semiconductor & System Design segment customers are primarily semiconductor and electronics systems companies. The customers for products in our Software Integrity segment include many of these companies as well as companies from a wider array of industries, including electronics, financial services, automotive, medicine, energy and industrials.

We market our products and services principally through direct sales in the United States and our principal foreign markets. We typically distribute our software products and documentation to customers electronically, but provide physical media (e.g., DVD-ROMs) when requested by the customer.

We maintain sales and support centers throughout the United States. Outside the United States, we maintain sales, support or service offices in Canada, multiple countries in Europe, Israel and throughout Asia, including Japan, China, Korea, and Taiwan. Our international headquarters are located in Dublin, Ireland. Our offices are further described under Part I, Item 2, Properties.

Information relating to domestic and foreign operations, including revenue and long-lived assets by geographic area, is contained in Part II, Item 8, Financial Statements and Supplementary Data. Risks related to our foreign operations are described in Part I, Item 1A, Risk Factors.

Revenue Attributable to Product Categories and Segments

Revenue attributable to each of our four product categories (with EDA, IP & Systems Integration, and Other comprising our Semiconductor & System Design segment) is shown below as a percentage of our total revenue for those fiscal years.

9

Aggregate revenue derived from one of our customers and its subsidiaries through multiple agreements accounted for 10.6%, 12.4% and 12.8% of our total revenue in fiscal 2021, 2020 and 2019, respectively. In each such year, the revenue derived from such customer and its subsidiaries was primarily attributable to our Semiconductor & System Design segment.

Product Sales and Licensing Agreements

We typically license our software to customers under non-exclusive license agreements that restrict use of our software to specified purposes within specified geographical areas. The majority of licenses to our EDA products are network licenses that allow a number of individual users to access the software on a defined network, including, in some cases, regional or global networks. The majority of licenses to our Software Integrity products are capacity or user licenses that allow a number of users to access the software based on a specified number of team members or specified code-bases in a defined territory. License fees depend on the type of license, product mix, and number of copies of each product licensed.

For a full discussion of our software product offerings, see Part II, Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations.

We typically license our DesignWare IP products under nonexclusive license agreements that provide usage rights for specific designs. Fees under these licenses are typically charged on a per design basis plus, in some cases, royalties. See Note 2 of Notes to Consolidated Financial Statements for further information.

Our hardware products, which principally consist of our prototyping and emulation systems, are either sold or leased to our customers. Our professional services team typically provides design consulting services to our customers under consulting agreements with statements of work specific to each project.

Competition

The EDA industry is highly competitive. We compete against other EDA vendors and against our customers' own design tools and internal design capabilities. In general, we compete principally on technology leadership, product quality and features (including ease-of-use), license terms, price and payment terms, post-contract customer

10

support, flexibility of tool use, and interoperability with our own and other vendors' products. We also deliver a significant amount of engineering and design consulting for our products. No single factor drives an EDA customer's buying decision, and we compete on all fronts to capture a higher portion of our customers' budgets. Our competitors include EDA vendors that offer varying ranges of products and services, such as Cadence Design Systems, Inc. and Siemens EDA (formerly Mentor Graphics Corporation). We also compete with other EDA vendors, including new entrants to the marketplace, that offer products focused on one or more discrete phases of the IC design process, as well as with customers' internally developed design tools and capabilities.

Within our Semiconductor & System Design segment, Synopsys also competes against numerous other IP providers, including Cadence Design Systems, Inc., and our customers' internally developed IP. We generally compete on the basis of product quality, reliability and features, availability of titles for new manufacturing processes, ease of integration with customer designs, compatibility with design tools, license terms, price and payment terms, and customer support.

Our Software Integrity segment competes with numerous other solution providers, many of which focus on specific aspects of software security or quality analysis. We also compete with frequent new entrants, which include start-up companies and more established software companies. For example, competitors named in the Gartner Magic Quadrant for Application Security Testing include Checkmarx Ltd., Veracode (now part of Thoma Bravo, LLC) and Micro Focus International plc.

Proprietary Rights

We primarily rely upon a combination of copyright, patent, trademark, and trade secret laws and license and non-disclosure agreements to establish and protect our proprietary rights. We have a diversified portfolio of more than 3,400 United States and foreign patents issued, and we will continue to pursue additional patents in the future. Our issued patents have expiration dates through 2040. Our patents primarily relate to our products and the technology used in connection with our products. Our source code is protected both as a trade secret and as an unpublished copyrighted work. However, third parties may independently develop similar technology. In addition, effective copyright and trade secret protection may be unavailable or limited in some foreign countries. While protecting our proprietary technology is important to our success, our business as a whole is not significantly dependent upon any single patent, copyright, trademark, or license.

In many cases, under our customer agreements and other license agreements, we offer to indemnify our customers if the licensed products infringe on a third party's intellectual property rights. As a result, we may from time to time need to defend claims that our customers' use of our products infringes on these third-party rights. We license software and other intellectual property from third parties, including, in several instances, for inclusion in our products. Risks related to our use of third-party technology are described in Part I, Item 1A, Risk Factors.

Corporate Social Responsibility at Synopsys

We recognize that our significant role in shaping a future of Smart Everything brings important responsibilities. The future is not smart if it is not sustainable, fair and secure. Our "Smart Future" Corporate Social Responsibility (CSR) program provides a focus and structure for how we address both our own operational impact on the world and our ability to influence others around us. Through CSR, we are taking action on important Environmental, Social and Governance (ESG) matters, including sustainability initiatives to procure more renewable energy and to reduce our operational footprint as well as driving a culture of diversity and inclusion throughout our workforce and on our Board of Directors.

We aim to influence positive social and environmental change across our ecosystem by applying our resources, competencies, and team-based problem-solving approach. Our technology is in action in countless ways, from bringing safety and security to the driverless car revolution to enabling the technologies that are an increasingly vital component of protecting human health and well-being. As the role of computing increases exponentially, IoT, 5G and machine learning applications risk driving similarly exponential energy consumption and carbon emissions. This makes our work to enable low-power computing at the device level and in the cloud especially critical to the industry's sustainability.

Additional information about our approach to CSR and to ESG issues is available on our CSR website, including our Environmental Policy, our CSR Report, and our CDP Climate Change Questionnaire. The contents of our website,

11

Corporate Social Responsibility Report and CDP Climate Change Questionnaire are referenced for general information only and are not incorporated into this 10-K.

Human Capital Resources

Synopsys continues our commitment to attracting and retaining the brightest and best talent, and investing in and inspiring our people to do their best work is critical for our success. As of fiscal year-end, Synopsys had 16,361 employees, of which approximately 28% are in the United States, and 72% in other locations around the world. Approximately 78% of our employees are engineers, and over half of those employees hold Masters' or PhD degrees. Human capital measures and objectives that Synopsys focuses on in managing its business include employee health, safety and wellbeing, talent acquisition and retention, employee engagement, development and training, inclusion and diversity, and compensation and pay equity.

Health, Safety and Wellbeing

The health and safety of our employees, their families, our customers and the communities in which we live and work, remains a top priority. We have held multiple clinics in our offices for employees to be vaccinated, and have provided ongoing assistance to our employees and their families throughout the pandemic. With employee wellness at the forefront of our efforts, we provided our employees with a variety of benefits and support initiatives to address the inherent challenges of working remotely during the pandemic, including a parental resources website with information to assist working parents co-educating children at home, and our Stronger Through Wellbeing campaign focused on employee empowerment, which included five recharge days to ensure employees were taking time off and truly getting a restful break.

Recruitment and Retention

Our workforce is representative of the industry we serve. We are highly technical, enjoy pushing the boundaries of what is possible and are individually innovative. In 2021, we grew our employee headcount by approximately 9% with a continued focus on increasing the number of women in technical positions in our workforce and ensuring a vibrant talent pipeline through early career hiring. While we experienced an increase in employee turnover in 2021, our turnover rate remains notably lower than our competitive benchmarks. We attribute the strong retention of our talented workforce to a number of factors, including exciting and challenging assignments, strong leadership and management, a culture of integrity, the opportunity to learn new skills and advance careers, our commitment to diversity and inclusion, and the strength of our technology and customer relationships, along with competitive and equitable total rewards, as described below.

Inclusion and Diversity

Inclusion and Diversity (I&D) runs through our corporate values at every level-from our foundation of integrity to our execution excellence, from our dedicated leadership to our united passion for a better tomorrow. We have always strived to be a company where different perspectives and backgrounds are leveraged and celebrated. We care deeply about the diversity of our teams, talent pipelines and pay and development programs with a goal to ensure inclusive, equitable practices. We carefully study retention trends and feedback from diverse groups to identify areas where we can improve.

In 2021, we continued to increase the representation of women in our workforce globally and increased representation of Black, Latinx and Indigenous individuals in our U.S. employee base. We provide leadership training designed to promote inclusion and diversity in attracting, retaining and developing our workforce, and we are developing a training program to actively attract and engage individuals with disabilities. In addition, we established employee resource groups, which are employee led communities that serve to foster an inclusive and diverse workplace and align with Synopsys' mission and values in support of our goals for inclusion and diversity.

Total Rewards

To ensure a compelling total rewards philosophy and practice, we have practices in place to deliver fair and equitable compensation for employees based on their contribution and performance. We benchmark market practices, and regularly review our compensation against the market to ensure it remains competitive. We also offer a comprehensive and tailored set of benefits for employees and their families, providing protection from unexpected losses or medical expenses. Our compensation and benefit programs are tailored to the various geographies in which we operate and for eligible employees, may include:

•market-competitive salary and cash bonus opportunity;

•robust medical, dental, vision, and wellness benefits;

12

•financial planning tools and employee assistance plans;

•comprehensive leave alternatives;

•Employee Stock Purchase Plan (ESPP);

•equity compensation for eligible employees;

•life insurance options;

•retirement plans and associated benefits;

•student loan repayment assistance;

•and parental resources and adoption benefits.

Employee Engagement

We use employee feedback to drive and improve processes that support our customers and ensure a deep understanding of our culture and vision among our employees. Through our semi-annual SHAPE Synopsys surveys, we obtain employee insights on our values, manager effectiveness, ability to innovate, perceptions on inclusion and diversity, and other critical factors. By inviting employees to share their experiences, we create space for important conversations about who we are, where we are going, and how we can connect with each other and our work.

In mid-year 2021, 88% of our employee population participated in the SHAPE Synopsys survey. Results showed our global workforce to be highly engaged, with our overall score outpacing the industry engagement benchmark. We were pleased to see strong scores from our people in both how they were coping with the challenging circumstances related to the pandemic, and our managers' demonstrated ability to consider the wellbeing of their team members. We also observed positive scores and trends on items related to the employee experience.

Ongoing performance feedback encourages greater engagement in our business and improved individual performance. Each year, our employees participate in our performance development process that summarizes key accomplishments for the preceding year, establishes new stretch goals, and identifies critical capabilities for development. As part of this process, we encourage managers to solicit and share supportive multi-rater feedback, further strengthening the focus on teamwork and team success.

Talent Development

We regard every member of our employee base as a leader. We provide a number of leadership programs to address the career advancement and associated business impact of our employees, emerging leaders and executives. Through our digital platform, which was heavily utilized by our employees in 2021, we drive a culture of continuous learning where employees can access training, external articles, videos and blogs. In addition, we hosted a series of in-person and on-demand learning sessions designed to build capability and adaptability required for the future. As employees advance in their careers, our training framework builds new capabilities on established foundational skills.

Based upon the belief that our employees deserve great managers, our management training is designed to increase capability in the areas of communication, engagement, coaching, inclusion and diversity, hiring and on-boarding, business skills and ensuring an ethical and supportive work environment free from bias and harassment. Our regions and business teams also customize development programs for their specific needs.

13

Information about our Executive Officers

The executive officers of Synopsys and their ages as of December 13, 2021 were as follows:

NameAgePosition

Aart J. de Geus67Co-Chief Executive Officer and Chairman of the Board of Directors

Chi-Foon Chan72Co-Chief Executive Officer

Sassine Ghazi51President and Chief Operating Officer

Trac Pham52Chief Financial Officer

Joseph W. Logan62Chief Revenue Officer

John F. Runkel, Jr.66General Counsel and Corporate Secretary

Aart J. de Geus co-founded Synopsys and has served as Chairman of our Board of Directors since February 1998 and Chief Executive Officer since January 1994. He has served as Co-Chief Executive Officer with Dr. Chi-Foon Chan since May 2012. Since the inception of Synopsys in December 1986, Dr. de Geus has held a variety of positions, including President, Senior Vice President of Engineering and Senior Vice President of Marketing. He has served as a member of Synopsys' Board of Directors since 1986, and served as Chairman of our Board from 1986 to 1992 and again from 1998 until present. Dr. de Geus has also served on the board of directors of Applied Materials, Inc. since July 2007. Dr. de Geus holds an M.S.E.E. from the Swiss Federal Institute of Technology in Lausanne, Switzerland and a Ph.D. in Electrical Engineering from Southern Methodist University.

Chi-Foon Chan has served as our Co-Chief Executive Officer since May 2012 and a member of our Board of Directors since February 1998. Prior to his appointment as our Co-Chief Executive Officer in May 2012, he served as our President from February 1998 to October 2021. Dr. Chan joined Synopsys in May 1990 and has held various senior management positions, including Chief Operating Officer from April 1997 to May 2012. Dr. Chan has also held senior management and engineering positions at NEC Electronics and Intel Corporation. Dr. Chan holds a B.S. in Electrical Engineering from Rutgers University, and an M.S. and a Ph.D. in Computer Engineering from Case Western Reserve University.

Sassine Ghazi has served as our Chief Operating Officer since August 2020 and became our President in November 2021. Mr. Ghazi joined Synopsys in March 1998 as an Application Engineer and most recently served as General Manager of the Design Group. Prior to joining Synopsys, Mr. Ghazi was a design engineer at Intel. Mr. Ghazi received his bachelor's degree in Business Administration from Lebanese American University; a B.S.E.E from the Georgia Institute of Technology in 1993; and an M.S.E.E. from the University of Tennessee in 1995.

Trac Pham is our Chief Financial Officer. Mr. Pham joined Synopsys in November 2006 as Vice President, Financial Planning and Strategy. He became our Vice President, Corporate Finance, in August 2012, assuming additional responsibility for our tax and treasury functions, before being appointed Chief Financial Officer in December 2014. Mr. Pham holds a Bachelor of Arts in Economics from the University of California, Berkeley and an MPIA (Master of Pacific International Affairs) from the University of California, San Diego. He is an active status California CPA.

Joseph W. Logan has served as our Chief Revenue Officer since June 2021. Previously, Mr. Logan was our Sales and Corporate Marketing Officer from July 2017 to June 2021, Senior Vice President of Worldwide Sales from September 2006 to July 2017, and Head of Sales for Synopsys' North America East region from September 2001 to September 2006. Prior to Synopsys, Mr. Logan was head of North American Sales and Support at Avant! Corporation. Mr. Logan holds a B.S.E.E. from the University of Massachusetts, Amherst.

John F. Runkel, Jr. has served as our General Counsel and Corporate Secretary since May 2014. From October 2008 to March 2013, he was Executive Vice President, General Counsel, and Corporate Secretary of Affymetrix, Inc. He served as Senior Vice President, General Counsel and Corporate Secretary of Intuitive Surgical, Inc. from 2006 to 2007. Mr. Runkel served in several roles at VISX, Inc. from 2001 to 2005, most recently as Senior Vice President of Business Development and General Counsel. Mr. Runkel was also a partner at the law firm of Sheppard, Mullin, Richter & Hampton LLP for 11 years. He holds a Bachelor of Arts and a Juris Doctorate from the University of California, Los Angeles.

There are no family relationships among any Synopsys executive officers or directors.