Shareholder Vote

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) – May 4, 2026 WEST PHARMACEUTICAL SERVICES, INC. (Exact name of registrant as specified in its charter) Pennsylvania 1-8036 23-1210010 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.) 530 Herman O. West Drive , Exton , PA 19341-1147 (Address of principal executive offices) (Zip Code)  Registrant’s telephone number, including area code: 610 - 594-2900 Not Applicable (Former name or address, if changed since last report.) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol Name of each exchange on which registered Common Stock, par value $0.25 per share WST New York Stock Exchange Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ 1 Item 5.07 Submission of Matters to a Vote of Security Holders. West Pharmaceutical Services, Inc. (the “Company”) held its 2026 Annual Meeting of Shareholders virtually on May 4, 2026 . The four proposals that were voted on at the Annual Meeting are described in detail in the Company’s 2026 Proxy Statement. As of the record date, February 27, 2026, there were 72,081,610 shares of the Company’s common stock outstanding. A total of 66,193,322 shares, representing 91.83% of the Company’s common stock outstanding, were represented at the Annual Meeting. The final voting results for each proposal presented at the Annual Meeting are set forth below. Proposal 1: The eleven nominees, as set forth below and in the Company’s 2026 Proxy Statement, were elected as directors, each to serve until the 2027 Annual Meeting of Shareholders. Name For Against Abstain Broker Non-Votes Mark A. Buthman 62,394,975 1,521,106 34,356 2,242,885 William F. Feehery 61,427,391 2,489,202 33,844 2,242,885 Robert F. Friel 62,396,755 1,521,677 32,005 2,242,885 Eric M. Green 58,892,532 4,573,928 483,977 2,242,885 Janet B. Haugen 61,934,409 1,987,189 28,839 2,242,885 Molly E. Joseph 61,545,956 2,341,355 63,126 2,242,885 Deborah L. V. Keller 57,992,162 5,599,392 358,883 2,242,885 Myla P. Lai-Goldman 61,523,642 2,395,041 31,754 2,242,885 Stephen H. Lockhart 63,432,380 470,840 47,217 2,242,885 Douglas A. Michels 60,240,141 3,670,807 39,489 2,242,885 Paolo Pucci 62,930,048 981,152 39,237 2,242,885 Proposal 2: The non-binding advisory vote to approve the compensation of the Company’s named executive officers was approved as set forth below. For Against Abstain Broker Non-Votes 60,107,802 3,762,206 80,429 2,242,885 Proposal 3: The appointment of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for the 2026 fiscal year was ratified as set forth below. For Against Abstain 58,509,119 7,556,514 127,689 Proposal 4: The shareholder proposal regarding an Independent Board Chair Policy was not approved as set forth below. For Against Abstain Broker Non-Votes 29,592,488 34,245,125 112,824 2,242,885 Item 9.01 Financial Statements and Exhibits. (d) Exhibit No. Description 104 The cover page from the Company’s Current Report on Form 8-K, dated May 4, 2026, formatted in Inline XBRL. 2 SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: May 5, 2026 WEST PHARMACEUTICAL SERVICES, INC. By: /s/ Norman D. Finch Jr. Norman D. Finch Jr. Senior Vice President, General Counsel and Corporate Secretary 3 EXHIBIT INDEX Exhibit No. Description 104 The cover page from the Company’s Current Report on Form 8-K, dated May 4, 2026, formatted in Inline XBRL. 4