144 0001638643 XXXXXXXX LIVE 0000882095 GILEAD SCIENCES, INC. 000-19731 333 Lakeside Drive Foster City CA 94404 6505743000 DANIEL O'DAY Director Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

35000 4705050.00 1241569874 06/01/2026 NASDAQ Common 02/04/2025 Performance Stock Units Issuer N 35000 02/04/2025 N/A N DANIEL O'DAY

333 Lakeside Drive Foster City CA 94404

Common 04/28/2026 10000 1291608.37 DANIEL O'DAY

333 Lakeside Drive Foster City CA 94404

Common 03/27/2026 10000 1368162.00 The securities to be sold were acquired upon the vesting of performance stock units during the period of 02/04/2025 through 02/03/2026. 06/01/2026 02/25/2026 /s/ Daniel O'Day