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Gilead CEO – Daniel O’Day (Age – 57)

Daniel O’Day became chairman and CEO of the US-based biopharmaceutical company Gilead Sciences, Inc. in March 2019 after John Milligan’s resignation from the post. Gilead’s headquarters is in Foster City, California. He helped company sail through the COVID-19 turmoil and came up with the first approved antiviral Remdesivir. Since the time he joined this high-profile job, O’Day has been tested on his ability to make the company’s expensive CAR-T cancer treatment successful and invest in the correct R&D deals and acquisitions. Gilead CEO Daniel is an American business executive with deep Irish roots. (For age, career, net worth, email address and other details, scroll down this wiki page)

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Gilead CEO Daniel O'Day

Gilead Competitors

The antiviral drug maker, Gilead Sciences, competes with:

  • GlaxoSmithKline
  • Pfizer
  • Merck

Salary & Net Worth – Investors, Funding, & Valuation

As of 2021, Gilead CEO Daniel O’Day’s net worth is estimated to be around 45-55 million USD. In 2020, the Gilead CEO received a total compensation of around 19 million USD.

The publicly listed biopharmaceutical corporation, Gilead, is estimated to have a valuation of 95 billion USD in terms of market cap. Institutional ownership in the company stands at 78.88%. State Street Corp, Vanguard Group Inc, and Capital Research Global Investors are some of the major shareholding companies.

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Career & Education – Company, University, & College                                  

Before he became the CEO of Gilead Sciences, O’Day served Roche Pharmaceuticals from the same position. He spent more than thirty years in the company performing different executive roles for its pharmaceutical and diagnostics departments. He joined the company in 1987 for Commercial Sales. He worked as an Emergency Medical Technician helping patients with critical care when he was in a Connecticut high school. Before going for higher education, he also took up landscaping as his first job.

He completed Biology from Georgetown University and went to Columbia University for a degree in business administration.

Contact Daniel O’Day Email Address | Twitter | LinkedIn

Daniel’s email ID is [email protected] You can check his LinkedIn profile at He is not available on Twitter.

Gilead Customer Care Number | Help & Support

Check company’s Contact Us page to get in touch with their customer service team for any assistance.

Daniel O’Day Wiki – Age, Wife, Family, & More

Daniel (age 57) was born on 26 May, 1964 in Texas. He is a third generation Irish-American in his family. His paternal side of the family comes from Ennis, County Clare. Gilead CEO Daniel’s wife is Mara Grace Dolan and together they have three kids: Meghan, Brendan, and Tierney. O’Day’s family’s American roots are as old as 1853. His great-grandfather Richard O’Day was born in Berlin, Wisconsin. They built railroads and later his grandfather joined the oil industry. Due to this, the family had to move to Cut Bank, Montana where his father grew up. 

He defines his father to be a literal person. His father was the first one from the family to receive college education. When he went for an interview at IBM, he was told that only master’s degree students got jobs with them. He left the place to pursue mathematics from Washington University. After taking the degree, he came to the same company where recruiters were still the same. During 35 years of his career at IBM, he and his family traveled to different places every few years for work.

Gilead CEO Daniel has four siblings and he values Irish heritage and people for perseverance. Because of the nature of his father’s job, he became fond of roaming and aspired to do an international job. His stint in landscaping as a manual labor motivated him to pursue higher education. Initially, he wanted to go to a medical school for graduation, but then he changed his mind and focused on the healthcare industry. When he applied for jobs at pharmaceutical firms, he got plenty of offers. He sought advice from his dad about the choice, to which the man suggested that he should take up one where he could learn the maximum.

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