2021 CORPORATE RESPONSIBILITY REPORT I 77 SASB Code Metrics Response Medical Equipment & Supplies Industry Standard } Business Ethics HC-BP-510a.2 Description of code of ethics governing interactions with healthcare professionals Quest Diagnostics maintains a Code of Ethics applicable to all employees. The Code applies to all employee activity, including interactions with healthcare professionals. HC-BP-510a.1 Total amount of monetary losses as a result of legal proceedings associated with bribery or corruption When public disclosure criteria are met, monetary losses as a result of legal proceedings associated with bribery and corruption are included in the Quest Diagnostics Annual Report on Form 10-K. Medical Equipment & Supplies Industry Standard } Ethical Marketing HC-BP-270a.1 Total amount of monetary losses because of legal proceedings associated with false marketing claims When public disclosure criteria are met, monetary losses as a result of legal proceedings associated with false marketing claims are included in the Quest Diagnostics Annual Report on Form 10-K. Health Care Distributors Industry Standard HC-DI-510a.1 Description of efforts to minimize conflicts of interest and unethical business practices Quest Diagnostics maintains a Code of Ethics applicable to all employees and all employee activity. Quest Diagnostics also maintains a Conflict of Interest Policy applicable to all employees. The Policy applies to all employee activity that may cause or create the appearance of a conflict of interest. Table 3: Additional Accounting Metrics TABLE OF CONTENTS 2021 OVERVIEW COVID-19 RESPONSE PROMOTING A HEALTHIER WORLD CREATING AN INSPIRING WORKPLACE BUILDING VALUE REFERENCES