Exhibit 99.1 Irvine, California, May 6, 2025 - Masimo Corporation (Nasdaq: MASI) today announced its financial results for the first quarter ended March 29, 2025. First Quarter 2025 Results From Continuing Operations : (1) First Quarter 2025 Results From Discontinued Operations : (2) Masimo Reports First Quarter 2025 Results ■ GAAP loss from discontinued operations, net of tax was ($218) million, which included an impairment of intangibles of$295 million for the non-healthcare consumer business. Katie Szym ...