X0609 4 2026-05-15 0 0001484612 Outset Medical, Inc. OM 0001304125 Trigg Leslie false 3052 ORCHARD DRIVE SAN JOSE CA 95134 1 1 0 0 Chair and CEO 0 Common Stock 2026-05-15 4 S 0 3445 3.7 D 98874 D Common Stock 41666 I Trigg 2002 Rev Trust Common Stock 584 I Trigg Family Trust Required number of shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of an aggregate of 9,319 shares of Common Stock underlying RSUs granted to the reporting person on January 12, 2024 and June 10, 2025. This sale was made to satisfy tax withholding obligations through a "sell to cover" transaction and does not represent a discretionary trade by the reporting person. This balance reflects a correction to the number of shares of Common Stock sold by the reporting person to satisfy tax withholding obligations as previously reported on a Form 4 filed on February 19, 2026. Due to an administrative error, the prior Form 4 reported the sale of 3,361 shares instead of the correct number, 3,384 shares. John Brottem For: Leslie Trigg 2026-05-19