This presentation and the accompanying oral remarks of management of Entegris, Inc.
(the “Company”), including responses to questions, contain “forward-looking statements”, including statements about the Company’s long-term financial targets, strategy and market outlook. The words “believe,” “expect,” “anticipate,” “intend,”
“estimate,” “forecast,” “project,” “should,” “may,” “will,” “would” or the negative thereof and similar expressions are intended to identify such forward-looking statements. These forward-looking statements are based on current management
expectations and assumptions only as of the date of this presentation. They are not guarantees of future performance and they involve substantial risks and uncertainties that are difficult to predict and that could cause actual results to differ
materially from the results expressed in, or implied by, these forward-looking statements. Market size, growth and other industry data in this presentation come from independent third parties and the Company’s own estimates. This data involves
assumptions and limitations, and the Company has not independently verified third-party data or guaranteed its accuracy or completeness. Industry forecasts are subject to the risks below. These risks and uncertainties include, but are not limited
to, the Company’s ability to execute its strategic plan and achieve its long-term financial targets, which are based on assumptions about semiconductor industry growth, market share, pricing, costs and capital spending that may prove incorrect;
fluctuations in the demand for semiconductors and the overall volume of semiconductor manufacturing; the impact of global economic uncertainty, including financial market volatility, which may result in lower consumer spending, inflationary
pressures, a higher interest rate environment, an economic recession, and bank instability; supply chain interruptions and the Company’s dependence on sole, single, and limited source suppliers and related raw material shortages and cost
increases; operational, political, legal and other risks associated with the Company’s international operations, including challenges in hiring and integrating workers in different countries, maintaining appropriate business practices across the
varied jurisdictions in which the Company operates, and engaging and managing global, regional and local third-party service providers; risks related to geopolitical uncertainty and regional and global instabilities and hostilities, including,
but not limited to, the ongoing conflicts between Ukraine and Russia, and conflicts in the Middle East, as well as the global responses thereto; export controls, economic sanctions, and similar restrictions; the concentration and consolidation of
the Company’s customer base; the Company’s ability to meet rapid demand shifts; the Company’s ability to continue technological innovation and to introduce new products to meet customers’ rapidly changing requirements; manufacturing and other
operational disruptions or delays; the Company’s ability to complete, ramp and achieve expected utilization of new and expanded manufacturing capacity; IT system failures, network disruptions, and cybersecurity risks; tariffs, additional taxes
and other protectionist measures resulting from international trade disputes, strained international relations and changes in foreign and national security policy; the risks associated with the use and manufacture of hazardous materials; goodwill
impairment; challenges in attracting and retaining qualified personnel; the Company’s ability to protect and enforce intellectual property rights; artificial intelligence; the Company’s environmental, social, and governance commitments; legal and
regulatory risks, including changes in laws and regulations related to the environment, health and safety, accounting standards, and corporate governance, across the jurisdictions in which the Company operates; changes in taxation or adverse tax
rulings; the ability to obtain government incentives and the possibility that competitors will benefit from government incentives for which the Company does not qualify; the amount and consequences of the Company’s indebtedness, the Company’s
ability to repay its debt and to obtain future financing, and the Company’s obligations under its current outstanding credit facilities; the Company’s ability to achieve its capital allocation and deleveraging objectives; volatility in the
Company’s stock price; the payment of cash dividends and the adoption of future share repurchase programs; the Company’s ability to effectively implement any organizational changes; substantial competition; the Company’s ability to identify,
complete and integrate acquisitions, joint ventures, divestitures or other similar transactions; the impacts of climate change; and other matters. These risks and uncertainties also include, but are not limited to, the risk factors and additional
information described in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025, filed with the Securities and Exchange Commission (the “SEC”) on February 11, 2026, including under the heading “Risk Factors” in Item
1A, in the Company’s subsequent Quarterly Reports on Form 10-Q, and in the Company’s other periodic filings with the SEC. Except as required under the federal securities laws and the rules and regulations of the SEC, the Company undertakes no
obligation to update any forward-looking statements or information contained herein or made orally during this event, which speak only as of their respective dates. Any replay or archived webcast of this event speaks only as of November 9,
2026. This presentation contains references to “Adjusted EBITDA,” “Adjusted EBITDA – as a % of Net Sales,” “Adjusted Operating Income,” “Adjusted Operating Margin,” “Adjusted Gross Profit,” “Adjusted Gross Margin – as a % of Net Sales,”
“Adjusted Segment Profit,” “Adjusted Segment Profit Margin,” “Non-GAAP Operating Expenses,” “Non-GAAP Tax Rate,” “Non-GAAP Net Income,” “Diluted Non-GAAP Earnings per Common Share,” “Free Cash Flow,” and other measures that are not presented in
accordance with U.S. generally accepted accounting principles (“GAAP”). Management uses these non-GAAP financial measures to evaluate the Company’s operating and financial performance and for planning purposes, and believes they provide investors
with useful supplemental information and facilitate period-to-period comparisons by excluding items that management does not consider indicative of the Company’s ongoing operating performance. The non-GAAP financial measures should not be
considered in isolation or as a substitute for GAAP financial measures but should instead be read in conjunction with the GAAP financial measures. Non-GAAP financial measures have limitations: they do not reflect all of the amounts associated
with the Company’s results as determined in accordance with GAAP, the excluded items may recur and may have a material impact on the Company’s reported results, and other companies may calculate similarly titled measures differently, which may
limit their usefulness as comparative measures. Further information with respect to and reconciliations of such historical measures, and of the estimated 2026 non-GAAP financial measures presented, to the most directly comparable GAAP measure can
be found in the appendix to this presentation and on the Company’s investor relations website at investor.entegris.com. The Company does not provide a reconciliation of the forward-looking non-GAAP financial measures reflected in its long-term
financial targets to the most directly comparable GAAP measures because certain items excluded from these non-GAAP measures, such as restructuring, acquisition-related and impairment charges, cannot be reasonably predicted or estimated without
unreasonable efforts due to their inherent uncertainty. These items could be material, individually or in the aggregate, to the Company’s future GAAP results. Safe Harbor 4 | © Entegris. All Rights Reserved.
