# Daniel O’Day

> Daniel O’Day is chairman and chief executive officer of Gilead Sciences, a role he began in March 2019 after more than three decades at Roche. His career spans commercial roles, human resources and international leadership; he is a Georgetown and Columbia graduate and a Georgetown director. In October 2026, Georgetown announced a $10 million scholarship commitment from Daniel and Mara O’Day for first-generation students.

- **Role:** Chairman and Chief Executive Officer at Gilead Sciences
- **Organizations:** Gilead Sciences, Roche, Georgetown University, PhRMA
- **Nationality:** American
- **Education:** Bachelor of Science in Biology, Georgetown University, MBA, Columbia Business School
- **Known for:** Led Gilead as chairman and CEO since March 2019., Held divisional leadership and corporate executive committee responsibilities at Roche., Named a Distinguished Leadership in Business Award honoree by Columbia Business School.

## Career timeline

- **1987** — Joined Roche in United States commercial and sales roles.
- **1995** — Director of Human Resources at Roche in the United States.
- **1996** — Director of Product Marketing at Roche in the United States.
- **1998** — Moved to Roche headquarters in Switzerland in a business unit leadership role.
- **2001** — Head of Corporate Planning for Roche in Tokyo.
- **2003** — General Manager for Roche in Denmark.
- **2006** — President and CEO of Roche Molecular Diagnostics in Pleasanton, California.
- **2010** — Chief Operating Officer of Roche Diagnostics and member of Roche’s corporate executive committee.
- **2012** — Chief Operating Officer of Roche’s pharmaceuticals division; subsequently its CEO.
- **2019** — Became Gilead chairman and CEO on March 1.
- **2023** — Began a Georgetown University board term on July 1.
- **2026** — Daniel and Mara O’Day’s $10 million Georgetown scholarship commitment announced on October 20.

## Achievements

- Led Gilead as chairman and CEO since March 2019.
- Held divisional leadership and corporate executive committee responsibilities at Roche.
- Named a Distinguished Leadership in Business Award honoree by Columbia Business School.
- With Mara O’Day, committed $10 million to establish Georgetown’s O’Day Family Scholarship Fund.

## Latest updates

- **2026-10** — Georgetown announced Daniel and Mara O’Day’s $10 million scholarship commitment on October 20; the first scholar entered in fall 2026, with two scholarships planned for each incoming undergraduate class.

## Links

- Website: https://www.gilead.com/company/leadership/daniel-oday
- LinkedIn: https://www.linkedin.com/in/gilead-daniel-o-day

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Profile page: https://yespress.io/daniel-oday
Published by YesPress — https://yespress.io
Last updated: 2026-10-21