Vanguard Group's 13.49% Ownership in West Pharmaceutical Services

The Vanguard Group, Inc. filed an amendment (Schedule 13G/A) to report its ownership of 9,704,948 shares, representing 13.49% of West Pharmaceutical Services Inc.'s common stock. The filing indicates that Vanguard holds these shares on behalf of its clients, including investment companies and managed accounts. The shares are held in the ordinary course of business and not for the purpose of influencing the control of the issuer. The filing also certifies that no single client owns more than 5% of the securities. The amendment was signed by Ashley Grim, Head of Global Fund Administration, on October 31, 2025.