Exhibit 99.1 Skyworks Reports Preliminary Q4 and Full Year FY25 Results IRVINE, Calif., October 28, 2025 – Skyworks, Inc. (Nasdaq: SWKS), a leading developer, manufacturer and provider of analog and mixed-signal semiconductors and solutions for numerous applications, today reported preliminary fourth fiscal quarter and fiscal year- end results for the period ended October 3, 2025. Preliminary Fourth Fiscal Quarter Results Highlights: Preliminary Annual Fiscal 2025 Results Highlights: See tables below for th ...