Exhibit 99.1 West Reports Third-Quarter 2025 Results - Delivered solid growth across Proprietary Products and Contract Manufacturing Segments - - Achieved double-digit growth in HVP Components - - Strengthened executive leadership team, including recently appointed CFO Robert McMahon - - Increases Full-Year 2025 Revenue and EPS Guidance - Exton, PA, October 23, 2025 – West Pharmaceutical Services, Inc. (NYSE: WST), a leading provider of innovative, high-quality injectable solutions and services, today annou ...