X0508 4 2024-01-31 0000882095 GILEAD SCIENCES, INC. GILD 0001638643 O'Day Daniel Patrick 333 LAKESIDE DRIVE FOSTER CITY CA 94404 1 1 Chairman & CEO 0 Common Stock 2024-01-31 4 A 0 50870 0 A 368147 D Common Stock 2024-01-31 4 A 0 179877 0 A 548024 D Common Stock 2024-01-31 4 F 0 79335 78.26 D 468689 D Represents shares of the Issuer's common stock subject to specific tranches of the performance share awards made to the Reporting Person on March 10, 2022 and March 10, 2023. Such tranches of shares were subject to both performance-vesting and service-vesting requirements. The performance vesting requirement was satisfied on the date reported in Column 2 above upon certification of performance goal attainment by the Compensation and Talent Committee of the Issuer's Board of Directors. However, the shares will not be issued to the Reporting Person until the requisite continuing service requirements are also met. Represents shares of the Issuer's common stock subject to specific tranches of the performance share award made to the Reporting Person on March 10, 2021. Such tranches of shares were subject to performance-vesting and service-vesting requirements and became issuable on the date reported in Column 2 above upon certification of performance goal attainment by the Compensation and Talent Committee of the Issuer's Board of Directors /s/ Edward S. Son by Power of Attorney for Daniel P. O'Day 2024-02-02