Quest Diagnostics announced that Sam Samad will become Executive Vice President and Chief Financial Officer. He will succeed Mark Guinan, who, in February, following eight and a half years in the role, announced his intention to retire. To provide a smooth transition, Mr. Guinan will remain at Quest through the report of second quarter financial results.

Mr. Samad will join Quest Diagnostics on July 11, 2022. Mr. Samad, 52, joins Quest Diagnostics from Illumina Inc., where he has served as Chief Financial Officer since 2017. At Illumina, a global leader in DNA sequencing and array-based technologies, he has responsibility for the company's finance, accounting, investor relations, internal audit, and treasury functions.

Before joining Illumina, Mr. Samad held several senior leadership positions at Cardinal Health, including SVP and Corporate Treasurer. During his tenure as Treasurer, he also had operational and financial responsibility for Cardinal Health's China business. He previously served as SVP and CFO for Cardinal Health's $85 billion pharmaceutical segment, among other leadership roles.

Prior to Cardinal Health, he spent 13 years at Eli Lilly and Company in a variety of sales and finance roles, both domestically and internationally, including as CFO of the company's Canada affiliate. Mr. Samad holds a BBA degree from the American University of Beirut in Lebanon and an MBA from McMaster University in Canada.