2021 CORPORATE RESPONSIBILITY REPORT I 6 Company overview TABLE OF CONTENTS 2021 OVERVIEW COVID-19 RESPONSE PROMOTING A HEALTHIER WORLD CREATING AN INSPIRING WORKPLACE BUILDING VALUE REFERENCES As the world’s leading provider of diagnostic information services, Quest Diagnostics is committed to positively impacting the communities in which we live and work by promoting a healthier world, creating an inspiring workplace, and building value for all our stakeholders. Quest firmly believes that when the right information is in the right hands, it can inspire actions that transform lives. Quest conducts business throughout the US in our patient service centers, offices, laboratories, and other facilities, as well as in Brazil, Canada, Finland, India, Ireland, and Mexico. Our services and products are used by customers in more than 130 countries. We also collaborate internationally through the Global Diagnostic Network, a strategic working group of diagnostic laboratories, each committed to unleashing and sharing local innovation. We leverage insights from our database of billions of lab test results to help raise awareness of disease states and health concerns that impact our world. General Diagnostics: Testing services that include routine and non-routine testing, representing an essential part of healthcare delivery Advanced Diagnostics: Testing services that follow an innovative testing model, including genetic and advanced molecular testing, which play a crucial role in today’s era of precision medicine Diagnostic Services: Health-centered intervention, testing, and analytical services that help healthcare providers, employers, insurance providers, and life science companies improve health outcomes and financial value Our services