Creating A More Sustainable World.

Technology and ApplicationsOur passion for energy-savings goes from chip-level design to system-level power consumption. Weprovide small, energy-efficient integrated circuits, including wireless systems-on-chips (SoC), modules,and development kits, digital isolators, and microcontrollers. Our IoT solutions extend battery life by upto 25 percent, enabling fewer disposable batteries and reducing landfill waste.With our state-of-the-art solutions and quality support, Silicon Labs has become a leader in severalsustainability-focused markets.Electric and Hybrid Electric VehiclesWe work with the world leaders in electricvehicles to provide innovative solutions. Ourdesigns help EVs produce fewer emissionsthan conventional vehicles, making an impacton people and our planet.1 million electric and hybrid electric vehiclesuse our chips, making us a leading supplierof digital isolation technology to the EVmarket, from battery management systemsto on-board chargers to charging stationsSmart LightingWe help some of the biggest lighting companies in the world add wireless connectivityto commercial and residential luminaries,sensors, and controls. From fewer cables usedin installation to occupancy-based controls topreventative maintenance alerts, smart lightingmakes a significant environmental impact.Smart LED bulbs use less energy and last 25Xlonger than traditional, incandescent lights4Motion-based smart lighting uses 35 percentless energy5Over 120M units of our products havebeen shipped to customers, building energyefficient smart lighting solutions for residential, commercial, and street applicationsSmart MeteringElectric, water, and gas providers turn to usto improve the reliability and accuracy of theirsmart meters. Additionally, these devices giveconsumers the ability to better manage energyusage and reduce costs.Customers using smart electric metersreduce their total energy consumptionbetween 3 – 10 percent 6Silicon Labs has the majority market shareof smart meters in Great Britain, where morethan 100 million meters were installed atmore than 30 million small businesses andhomesSilicon Labs 2020 Corporate Sustainability Report 5

Product Longevity Silicon Labs stands by our products and solutions.We offer longevity statements of 10 years, backedby a rigorous software maintenance program. Supply ChainSilicon Labs partners with world-class suppliers tomanage products from development to customerdelivery. As a fabless semiconductor company, we workwith our supply chain to ensure global manufacturingprocesses are environmentally and socially responsible,including safe and respectful working conditions. Wedemand high standards of business integrity, environmental responsibility, and respect for human rights fromall partners.Silicon Labs ensures an environmentally and sociallyresponsible supply chain by taking the followingactions: Follows and requires supplier adoption of the Responsible Business Alliance (RBA ) Code of Conduct Prioritizes socially and environmentally progressive,qualified suppliersDemands excellence in our quality and environmentalperformance, as demonstrated through our extensiveproduct and process qualification commitments, including ISO 9001 Quality Management System and ISO14001 Environmental Management SystemRequires suppliers involved in product manufacturingto have ISO 9001 and ISO 14001 certificationsEnsures automotive suppliers are IATF 16949 certifiedSilicon Labs is committed to a conflict-free supplychain. No known conflict minerals, including cobalt,in our products directly or indirectly finance or benefitarmed groups in the Democratic Republic of theCongo or adjoining countries.Overall, to deliver the highest standard of product quality and meet all environmental regulations and requirements, Silicon Labs maintains a close relationship withour supply chain.

Investment in PeopleSilicon Labs hires the most innovative talent around the world to solve toughchallenges for a myriad of markets, including smart home, consumer, industrial,commercial, internet infrastructure, and automotive. We take pride in our people,and that's one of the many reasons we continue to be awarded Most RespectedPublic Semiconductor Company and a certified Great Place to Work.BenefitsDiversity, Equity, and Inclusion (DEI)Silicon Labs offers medical, dental, and vision insurance plans to fit the needs of employees and theirfamilies. Our employees also have access to broadbenefit packages, including profit sharing, retirement,short and long-term disability insurance coverage, andlife insurance plans. Additionally, we host global events,activities, and seminars on healthy lifestyles, financialliteracy, and other areas of interests for employees.Silicon Labs is an equal opportunity employer whovalues diversity. Specifically, we: Do not discriminate on the basis of race, religion, color,national origin, gender, sexual orientation, age, maritalstatus, veteran status, or disability statusAre a multi-national and multi-ethnic workforce, withsites and employees in more than a dozen countriesActively promote diversity in our recruitment, development, and promotion practicesSilicon Labs 2020 Corporate Sustainability Report 7

Provide financial and volunteer support for equity inSTEM initiativesAdvocate for policies that support human rights,racial justice, and LGBTQ equality in the communities in which we live and workSupport employee resource groups like Women @Silicon Labs, mentorship circles, and diversityleadership initiatives in the semiconductor industrySafetySilicon Labs provides our employees with a healthy,safe, and productive work environment. During thepandemic, we’ve implemented additional measuresto enforce social distancing and reduce the spread ofairborne and surface contaminants. We strive for zeroworkplace incidents across our offices and operationsby complying with all applicable occupational healthand safety regulations.1Drive commitment and accountability for long-termchange by incorporating DEI metrics into our executive bonus plan2017Hours WorkedNumber of RecordableIncidentsPartner with external DEI experts and hold regularworkshops for all global employees on understandingbias and promoting inclusionSilicon Labs fosters and empowers our top talent. Wesupport a high-performance culture through learningand development solutions aligned with our strategicpriorities. Our approach is business-centric, accessible,and inclusive.Employees continuously collaborate and share theirexpertise through an internal training program consisting of classes and workshops that help strengthen technical and professional skills and advance careers. Wealso host university professors and external speakers tobroaden our knowledge, trigger creativity, and inspireinnovation.Our e-learning libraries and on-demand training videosallow employees to absorb information at their ownpace and share their recommendations with co-workers. Employees are invited to attend our annual two-daytechnical symposium, featuring peer-reviewed presentations that showcase internal technical achievementsand talks from outside experts to educate and inspireour workforce.120192,185,339 2,155,359 2,331,4121010.090.000.09Number of Lost TimeIncidents000Lost Time Injury Rate0.000.000.00Total Recordable InjuryRateEducation2018 s of December 2019, we had two sites with headcount of greater than 100Apeople per site, including both full-time and contract employees: Austin andSingapore. These two offices are also the only offices with any productionequipment. The Work Related Safety Statistics are calculated based on datafrom these two offices.

Community CommitmentOne of our corporate values is "do the right thing," and sharing our successwith the community is a key component of this charter. Silicon Labs has along history of providing financial, volunteer, and in-kind support to nonprofitsworldwide. We want people to benefit from our products, services, and presencein their communities.Today, we donate more than 1 percent of our annualprofits to charitable organizations with a strong focuson the advancement of science, technology, engineering,and math (STEM) in education. Specifically, we: Host a corporate match program for US employeedonations to qualified nonprofitsOffer 24 hours of paid time off per year for allemployees to volunteer in their communities Allocate funds to our global sites for grantssupporting critical causes locallyEngage in service projects and donate to relief effortswhen disasters occurHold a company-wide volunteer and giving campaign,the Global Month of Service, annuallyOperate an employee board service program toencourage leadership development and serviceProvide financial grants and volunteer support toorganizations offering equity-focused STEM educationprograms for women, LGBTQ , and minority youthSilicon Labs 2020 Corporate Sustainability Report 9

Policies and Position StatementsCode of Business Conduct and EthicsSupplier Code of ConductConducting the business affairs of Silicon Labs inaccordance with the highest ethical standards and incompliance with legal requirements aligns directly withour mission of providing quality solutions to our customers. A reputation for ethical conduct, market leadership, and business success builds the bond betweenemployees, officers, members of the Board of Directors,shareholders, suppliers, consultants, and all businesspartners to satisfy the demands of customers. Theintegrity of Silicon Labs provides a foundation for thismission. This Code of Business Conduct and Ethics (the"Code") applies to all Company employees, officers,consultants, and members of the Board of Directors.Silicon Labs is committed to the highest standard ofproduct quality and business integrity and ensuringthat working conditions in our supply chain are safe,that workers are treated with respect and dignity, andthat manufacturing processes are environmentally andsocially responsible. To ensure our suppliers meet andsupport these expectations, Silicon Labs has adoptedthe Responsible Business Alliance (RBA ) Code ofConduct and requires all of our supply chain partners toadopt the same code of conduct or another internationally recognized code that is equally or more comprehensive, such as the OECD Guidelines for MultinationalEnterprises or the UN Global Compact.Silicon Labs’ Code of Business Conduct and Ethics canbe found in the Governance Documents section of ourinvestor page: investor.silabs.com.In selecting qualified suppliers, Silicon Labs will givepreference to those that are socially and environmentally progressive. In addition, failure to comply with aninternationally recognized code of conduct may result insupplier disqualification.Global Human Rights PolicyAt Silicon Labs, we are committed to protecting, respecting, and advancing human rights as a core component ofthe way we do business and to which all people worldwideare entitled. We respect internationally-recognized humanrights, as set out in the International Bill of Human Rightsand the International Labour Organization’s Declaration onFundamental Principles and Rights at Work. We recognize our responsibility to respect human rights and avoidcomplicity in human rights abuses, and this Global HumanRights Policy encompasses principles within the UnitedNations Global Compact, the Universal Declaration ofHuman Rights, the UN Guiding Principles on Business andHuman Rights, our Code of Business Conduct and Ethics,and the laws of the countries in which we operate.This policy applies to all employees, contingent workers,and business relationships, including our partners, supplychain, and vendors. It is crossfunctionally managed by thecompany’s Environmental, Social, and Governance team.Silicon Labs’ Global Human Rights Policy can be foundin the Governance Documents section of our investorpage: investor.silabs.com.Silicon Labs’ Code of Conduct requires that every company in our supply chain is committed to: Safe worker conditionsEnvironmental requirements for conservation ofenergy use, water use, and pollution prevention No forced labor or child labor Fair wages Ethical business practices Implementation of a water management program thatdocuments, characterizes, and monitors water sourcesRoutine monitoring of the performance of its wastewater treatment and containment systems to ensureoptimal performanceResponsible management systems to conform tothe CodeSilicon Labs 2020 Corporate Sustainability Report 11

Silicon Labs Anti-Slavery, Human Traffickingand Forced Labor StatementTransparency Statement pursuant to California SB 657 and UKModern Slavery ActSilicon Labs strives to be a responsible global corporatecitizen. Silicon Labs strongly opposes slavery, humantrafficking, and forced labor. We do not use any slaveor forced labor and do not knowingly conduct businesswith any supplier engaged in such practices.Conflict Minerals PolicySilicon Labs is committed to eliminating the use ofconflict metals in the manufacturing of its products.Silicon Labs requires all of its suppliers to sourcefrom third-party audited conflict-free smelters,maintain a conflict-free sourcing policy, and complywith our internal policy based on the Organisation forEconomic Co-operation and Development (OECD)due diligence guidelines.Silicon Labs’ Code of Business Conduct and Ethicsoutlines our expectations for ethical and corporateresponsibility. Silicon Labs is committed to fair employment practices and a requirement that employees donot engage in activities associated with slavery, humantrafficking or forced labor. We also commit to complywith local labor laws and regulations. Our People andLegal teams monitor our compliance with these policies, and any employee who violates laws or policies issubject to appropriate discipline. Silicon Labs providestraining on its Code of Business Conduct and Ethics toall employees.Section 1502 of the Dodd Frank Act requires corporations to report the use of “conflict minerals” in themanufacture of their products. “Conflict minerals” in thiscontext refers to the following minerals: Columbite-tantalite (coltan), cassiterite, gold, wolframite, or their derivatives, which are limited to tantalum, tin, and tungsten.Silicon Labs has adopted a Supplier Code of Conductaligned with the Responsible Business Alliance (RBA)Code of Conduct. Forced, bonded (including debtbondage) or indentured labor, involuntary prison labor,slavery, or trafficking of persons are not permitted. Childlabor is not to be used in any stage of manufacturing.Each year, Silicon Labs prepares an RMI (Responsible Minerals Initiative) CMRT (Conflict MineralsReporting Template), to report its use of conflictmaterials in its supply chain to the SEC. The information contained in this report is also available to anycustomer upon request.Silicon Labs requires all of its supply chain vendors tocomply with the RBA Code of Conduct or a similar industry-standard code of conduct. Silicon Labs’ supplieragreements and purchase order terms and conditionsbind its suppliers to a broad spectrum of social and environmental compliance requirements including prohibitions on forced labor and child labor through adherenceto the RBA Code of Conduct. Suppliers are required toannually conduct a self-assessment of their quality, environment, and social accountability systems and performance, or allow Silicon Labs or its agent to conduct suchevaluation. Silicon Labs performs audits at key suppliersannually with auditors trained on these policies.There are no known conflict minerals in Silicon Labs’products that directly or indirectly finance or benefitarmed groups in the Democratic Republic of the Congoor adjoining countries.Silicon Labs is committed to comply with this legislation. We are actively working with our suppliers tounderstand or establish their systems for sourcing ofraw materials, including any listed minerals which maybe used in Silicon Labs’ products.In an effort to eliminate the impact of our supply chainon conflict minerals, Silicon Labs has begun collectingsmelter information on Cobalt in addition to the conflictminerals under Section 1502 of the Dodd Frank Act. Weare actively working with our suppliers to understandor establish their systems for sourcing of raw materials,including any cobalt related minerals which may beused in Silicon Labs’ products.

Endnotes1  External source: -virtualsensors-to-save-water/2  External source: ced%20Water%20Metering.pdf3  Estimate based on Silicon Labs solar inverter sales4  External source: gy-efficientlight#: :text nergy,last%203%2D25%20times%20longer.5  External source: oney/#: :text Motion%20Detecting%20Lights&text 20do%20it%20for%20you.6  External source: -012-9169-3Silicon Labs 2020 Corporate Sustainability Report 13

The leading provider of silicon, software and solutions for a smarter, more connected world.

By adopting renewable energy sources, our total usage decreased 2 percent from 2018 to 2019 and our GHG emissions decreased 22 percent 2018 2019 Energy Use Total (GWh) from Grid 8.5 8.3 Energy Use Percent from Grid 100% 100% Renewable Energy (GWh) 3.6 3.6 Renewable Energy (Percent) 42% 43% Non-Renewable Energy (GWh) 4.9 4.7