Quest Diagnostics Inc.

Quest Diagnostics works across healthcare to create a healthier world, one life at a time. We help connect people, from clinicians to consumers, with laboratory insights that illuminate a path to better health. With a focus on delivering smarter, simpler testing, our insights reveal new avenues to identify and treat disease, inspire healthy behaviors and improve healthcare management. Quest Diagnostics serves half the physicians and hospitals in the United States and one in three adult Americans each year, and our nearly 60,000 employees work together to deliver diagnostic insights that inspire actions to transform lives. www. QuestDiagnostics.com.

Current securities

1. 144 filingSep 1, 2026
2. 144 filingAug 28, 2026
3. 144 filingJul 28, 2026
4. 4 filingJul 27, 2026
5. 10-Q filingJul 23, 2026