O'Day Daniel Patrick
Gilead Sciences, Inc. · Chairman & CEO
O'Day Daniel Patrick serves as the Chairman and CEO of Gilead Sciences, Inc., a leading biopharmaceutical company focused on discovering, developing, and commercializing innovative medicines. Under his leadership, Gilead has emphasized advancements in healthcare, particularly in antiviral therapies. His recent insider trading activity, tracked through SEC Form 4 filings, shows a consistent pattern of sale activity, with a total of 51 disclosures from February 6, 2025, to July 2, 2026. Notably, his largest disclosed transaction involved a grant/exercise valued at approximately $19.9 million.