Exhibit 99.1 OPTION CARE HEALTH ANNOUNCES FINANCIAL RESULTS FOR THE FIRST QUARTER ENDED MARCH 31, 2026 BANNOCKBURN, IL., April 30, 2026 - Option Care Health, Inc. (the "Company" or "Option Care Health") (Nasdaq: OPCH), the nation's largest independent provider of home and alternate site infusion services, announced today financial results for the first quarter ended March 31, 2026. First Quarter 2026 Financial Highlights (year-over-year comparisons unless otherwise noted) "The first quarter reflected a mixe ...