Exhibit 99.1 Outset Medical Reports First Quarter 2024 Financial Results San Jose, CA – May 8, 2024 – Outset Medical, Inc. (Nasdaq: OM) (“Outset” or the “Company”), a medical technology company pioneering a first-of-its-kind technology to reduce the cost and complexity of dialysis, today reported financial results for the first quarter ended March 31, 2024. “With our recent 510(k) clearance for TabloCart with Prefiltration, 12th consecutive quarter of gross margin expansion and strong sales pipeline growth ...