Tony Zook directs AstraZeneca’s largest market-the United States and Canada and he also heads AstraZeneca’s Global Marketing function. Tony is also currently interim CEO of Medimmune.

Tony began his pharmaceutical career in 1983 at Berlex Laboratories, where he held various positions, including District Sales Manager, Marketing Director, Vice President-National Accounts, and Vice President-Sales.

Tony joined Astra USA in 1997 as Vice President-Marketing and Sales, two years before the merger of Astra AB and Zeneca Group Plc in 1999. Prior to becoming President and CEO for AstraZeneca’s US Business in 2006, Tony was Senior Vice President of Commercial Operations responsible for leading the company’s marketing and sales organizations in the United States. He has also held various other positions in AstraZeneca’s sales and marketing organization.

Tony earned a bachelor's degree in biology from Frostburg University, and an associate's degree in chemical engineering from Penn State University. Tony is a member of the Board for First State Innovation, the Pennsylvania Division of the American Cancer Society and is a member of the Board of Trustees for the Healthcare Leadership Council.