Daniel O'Day – Biography
Last update: April 21, 2026Executive profile
Daniel was Chairman and Chief Executive Officer at Gilead Sciences, and Chief Executive Officer at Roche Pharmaceuticals.
Daniel O'Day is currentlyChairman of the Board and Chief Executive Officer at Gilead Sciences - View - Gilead Sciences org chart
Director at Flatiron Health - View - Flatiron Health org chart
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Education
Daniel O'Day has a Bachelor in Biology from Georgetown University and a Master of Business Administration from Columbia University.
They have also studied at Georgetown University :
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They have also studied at Columbia University :
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The colleagues of Daniel O'Day
Company Colleagues
- At Gilead Sciences, Daniel O'Day has 172 colleagues including Kelly Kramer (Director), Sandra Horning (Director)…
- At Flatiron Health, Daniel O'Day has 31 colleagues including Nathan Hubbard (CEO), Krishna Yeshwant (Director)…
Industry Colleagues
- In the Pharmaceuticals industry, Daniel O'Day has 22,990 colleagues in 1,914 companies located in 68 countries. 10,828 executive movements have been recorded in the last 12 months. Learn more about Pharmaceuticals.
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