WEST PHARMACEUTICAL SERVICES INC

Note 19: Segment Information

Our business operations are organized intotwo reportable segments, Proprietary Products and Contract-Manufactured Products. Our Proprietary Products reportable segment offers proprietary packaging, containment solutions and drug delivery products, along with analytical lab services and other integrated services and solutions, primarily to biologic, generic and pharmaceutical drug customers. Our Contract-Manufactured Products reportable segment serves as a fully integrated business, focused on the design, manufacture, and automated assembly of complex devices, primarily for pharmaceutical, diagnostic, and medical device customer.

The Chief Operating Decision Maker ("CODM") is the Chief Executive Officer. The CODM evaluates the performance of our segments based upon, among other things, segment net sales and segment operating profit. Segment operating profit excludes general corporate costs, which include executive and director compensation, stock-based compensation, certain pension and other retirement benefit costs, and other corporate facilities and administrative expenses not allocated to the segments. Also excluded are items that the CODM considers not representative of ongoing operations. Such items are referred to as other unallocated items and generally include restructuring and related charges, certain asset impairments and other specifically-identified income or expense items. The segment operating profit metric is what the CODM uses in evaluating our results of operations and the financial measure that provides a valuable insight into our overall performance and financial position. The CODM considers budget-to-actual variances and variances against prior years within segment operating profit when making decisions about allocating resources to the segments.

The following table presents net sales information about our reportable segments, reconciled to consolidated totals:

In 2025, one of our customers individually accounted for more than 10% of consolidated net sales, at 15.8% or $485.9 million, contributing to net sales in both the Proprietary and Contract Manufacturing reportable segments.

In 2024, one of our customers individually accounted for more than 10% of consolidated net sales, at 12.3% or $356.4 million, contributing to net sales in both the Proprietary and Contract Manufacturing reportable segments.

In 2023, one of our customers individually accounted for more than 10% of consolidated net sales, at 10.9% or $322.1 million, contributing to net sales in both the Proprietary and Contract Manufacturing reportable segments.

The following table presents net sales and long-lived assets, by the country in which the legal subsidiary is domiciled and assets are located:

(1) Other segment expense (income) primarily includes foreign exchange transaction gains and losses, adjustments to contingent consideration and asset impairments attributable to the segments during the periods ended December 31, 2025, 2024 and 2023.

(2) Corporate general costs includes executive and director compensation, certain pension and other retirement benefit costs, and other corporate facilities and administrative expenses not allocated to the segments.

(3) During 2025, the Company recorded charges of $23.3 million related to ourtwo existing restructuring programs: (i) $18.4 million of the charges within other expense (income), related to severance, acceleration of depreciation and lease costs in connection with the Company's January 2025 restructuring plan and (ii) $4.9 million within selling, general and administrative expenses, for professional services related to our 2024 plan to optimize the legal structure of the Company and its subsidiaries. During 2024, the Company recorded expense to restructuring and other charges of $2.1 million. The net expense represents the impact of two items, the first of which is $4.6 million of expense recorded within selling, general and administrative expenses in connection with a plan to optimize the legal structure of the Company and its subsidiaries. The expense consists primarily of consulting fees, legal expenses, and other one-time costs directly attributable to this plan. This expense was partially offset by a $2.5 million benefit recorded within other expense (income) related to revised severance estimates in connection with the Company's 2022 restructuring plan. During 2023, the Company recorded a benefit to restructuring and other charges of $2.0 million, which represents the net impact of a $2.8 million benefit within other expense (income) for revised severance estimates in connection with its 2022 restructuring plan and an inventory write down of $0.8 million within cost of goods and services sold.

(4)During 2025, the Company recorded charges of $8.4 million related to the Company's agreement to sell its SmartDose® 3.5mL On-Body Delivery System and associated facilities to AbbVie. The Company recorded $6.2 million of the charges within other expense (income), related to severance and lease impairment charges in connection with the sale agreement. The Company recorded the remaining $2.2 million within selling, general and administrative expenses, relating to professional services in connection with the sale agreement.

(5) During 2025, the Company recorded cost-method investment impairment charges of $4.5 million within other expense (income). During 2023, the Company recorded cost-method investment impairment charges of $4.3 million within other expense (income).

(6) During 2025, 2024 and 2023, the company recorded $0.2 million, $0.8 million and $0.7 million, respectively, of amortization expense within selling, general and administrative expenses associated with an acquisition of an intangible asset during the second quarter of 2020.

(7)During 2023, the Company recorded expense of $11.6 million within other expense (income) as a result of the sale of one of the Company’s manufacturing facilities within the Proprietary Products segment. The transaction closed during the second quarter of 2023.

The following tables provide summarized financial information for ourtwo reportable segments and corporate and unallocated:

(1) Corporate and unallocated assets primarily include investments in affiliated companies, cash and cash equivalents, property, plant and equipment used in our corporate operations and deferred income taxes.

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Shareholders of West Pharmaceutical Services, Inc.

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of West Pharmaceutical Services, Inc. and its subsidiaries (the "Company") as of December 31, 2025 and 2024, and the related consolidated statements of income, of comprehensive income, of equity and of cash flows for each of the three years in the period ended December 31, 2025, including the related notes and schedule of valuation and qualifying accounts for each of the three years in the period ended December 31, 2025 appearing under Item 15(a)(2) (collectively referred to as the "consolidated financial statements"). We also have audited the Company's internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2025 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control - Integrated Framework(2013) issued by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in Management’s Report on Internal Control over Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on the Company’s consolidated financial statements and on the Company's internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Critical Audit Matters

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that (i) relates to accounts or disclosures that are material to the consolidated financial statements and (ii) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Provision for Income Taxes

As described in Notes 1 and 17 to the consolidated financial statements, the Company’s consolidated deferred tax assets were $114.1 million, net of a valuation allowance of $16.2 million, as of December 31, 2025, and income tax expense was $121.6 million for the year ended December 31, 2025. As a global organization, the Company files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. As disclosed by management, management estimates income taxes payable based upon current domestic and international tax legislation. Deferred income taxes are recognized by applying enacted statutory tax rates to tax loss carryforwards and temporary differences between the tax basis and financial statement carrying values of assets and liabilities. The enacted statutory tax rate applied is based on the rate expected to be applicable at the time of the forecasted utilization of the loss carryforward or reversal of the temporary difference. Valuation allowances on deferred tax assets are established when it is more likely than not that all or a portion of a deferred tax asset will not be realized. The realizability of deferred tax assets is subject to estimates of future taxable income, generally at the respective subsidiary company and the country level. The principal considerations for our determination that performing procedures relating to the provision for income taxes is a critical audit matter are the significant judgment by management in determining the income tax provision due to the Company’s global footprint and complexity in the various tax laws applicable in determining the Company’s effective tax rate. This in turn led to a high degree of auditor judgment, effort, and subjectivity in performing procedures and in evaluating audit evidence related to the income tax provision. Also, the audit effort involved the use of professionals with specialized skill and knowledge. Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to income taxes, including controls over the determination of the income tax provision. These procedures also included, among others, (i) testing the income tax provision, including testing the Company’s rate reconciliation, return to provision adjustments, permanent and temporary differences, and financial data used in the income tax provision calculation, and (ii) testing the accuracy of the income tax rates utilized in the provision. Professionals with specialized skill and knowledge were used to assist in evaluating the appropriateness of management’s application of relevant income tax law in certain jurisdictions.

/s/PricewaterhouseCoopers LLP

Philadelphia, Pennsylvania

February 17, 2026

We have served as the Company’s auditor since 1963.