Quest Diagnostics Appoints Healthcare Leader Timothy Wentworth to Board of Directors

### Quest Diagnostics Welcomes Healthcare Visionary to Board

Quest Diagnostics Incorporated has strategically enhanced its governance structure by appointing Timothy (Tim) Wentworth to its board of directors, expanding the board to eleven members. This development is significant for the company as it aims to leverage Wentworth's extensive experience in healthcare to bolster its mission of advancing diagnostic services while fostering healthier communities. Jim Davis, Quest's chairman and CEO, underlines Wentworth's remarkable leadership in various sectors, particularly in health plans and consumer services, stating his expertise will be instrumental in "creating a healthier world, one life at a time."

Wentworth, at 65 years old, brings a wealth of relevant experience to the board, including a distinguished tenure as CEO of Walgreens Boots Alliance, where he played a pivotal role in restructuring operations ahead of the company's sale to Sycamore Partners in mid-2025. His leadership extends beyond Walgreens; he is the founder of Evernorth Health Services, a segment of The Cigna Group committed to integrated health solutions, which demonstrates his skill in navigating complex health paradigms. Furthermore, his previous position as president and CEO of Express Scripts saw him at the helm of one of the largest pharmacy benefit managers in the United States, guiding the company into the Fortune 25 category and achieving over $100 billion in revenue post its acquisition of Medco Health Solutions.

The addition of Wentworth is not merely a symbolic gesture; it represents a calculated move by Quest Diagnostics to enhance its operational and strategic expertise. Timothy M. Ring, the lead independent director, commends Wentworth's track record in leading intricate healthcare organizations towards sustainable growth and value creation. With a blend of consumer brand management and extensive healthcare insights, Wentworth’s role is expected to aid Quest Diagnostics in navigating the evolving landscape of diagnostic services, further aligning the company's objectives with the demands of a rapidly changing health environment.

In addition to Wentworth's appointment, Quest Diagnostics continues to focus on expanding its diagnostic offerings to meet the growing needs of patients and healthcare providers alike. The company remains committed to leveraging innovative technologies and data analytics, ensuring a more efficient and comprehensive approach to laboratory testing services.

As it integrates Wentworth's insights, Quest Diagnostics stands poised to enhance its competitive edge in the healthcare sector, promoting its vision of improved health outcomes through reliable and advanced diagnostic solutions. This strategic addition signifies not only a shift in governance but also a renewed emphasis on enhancing patient care and operational excellence in a complex healthcare landscape.