Daniel P. O'Day

Daniel O'Day is a businessman serving as Chairman of the Board of Directors And Chief Executive Officer of Gilead Sciences, Inc.(GILD)

Prior to Gilead, Daniel served as the Chief Executive Officer of Roche Pharmaceuticals. His career at Roche spanned more than three decades, during which he held a number of executive positions in the company's pharmaceutical and diagnostics divisions in North America, Europe and Asia. He served as a member of Roche's Corporate Executive Committee, as well as on a number of public and private boards, including Genentech, Flatiron Health and Foundation Medicine.

Dan joined Gilead in March 2019 after more than three decades at Roche Pharmaceuticals where he also served as Chief Executive Officer. During his career at Roche, he held a number of prior executive positions in the company's pharmaceutical and diagnostics divisions in North America, Europe and Asia. He was a member of Roche's Corporate Executive Committee and served on several public and private boards, including Genentech, Flatiron Health and Foundation Medicine.

Dan holds a bachelor's degree in biology from Georgetown University and an MBA from Columbia University in New York. He currently serves on the board of directors for the Pharmaceutical Research and Manufacturers of America organization, Galapagos NV and Georgetown University.