Entegris : to Report Third Quarter Results 9am ET

Earnings Summary

Third Quarter 2022

November 2, 2022

Safe Harbor

This presentation contains forward-looking statements. 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 include statements related to future period guidance; future revenue, EBITDA as a percentage of sales and other financial metrics; future repayments under the Company's credit facilities; the Company's performance relative to its markets, including the drivers of such performance; the impact, financial or otherwise, of any organizational changes; market and technology trends, including the expected impact of the COVID-19 pandemic; the Company's capital allocation strategy, which may be modified at any time for any reason, including share repurchases, dividends, debt repayments and potential acquisitions; the impact of the acquisitions the Company has made and commercial partnerships the Company has established, including the acquisition of CMC Materials, Inc. ("CMC Materials"); the Company's ability to execute on its strategies; and other matters. These statements involve risks and uncertainties, and actual results may differ materially from those projected in the forward-looking statements. These risks and uncertainties include, but are not limited to, weakening of global and/or regional economic conditions, generally or specifically in the semiconductor industry, which could decrease the demand for the Company's products and solutions; the level of, and obligations associated with, the Company's indebtedness, including the debts incurred in connection with the acquisition of CMC Materials; risks related to the acquisition and integration of CMC Materials, including unanticipated difficulties or expenditures relating thereto; the ability to achieve the anticipated synergies and value-creation contemplated by the acquisition of CMC Materials and the diversion of management time on transaction-related matters; risks related

to the COVID-19 pandemic on the global economy and financial markets, as well as on the Company, its customers and suppliers, which much impact the Company's sales, gross margin, customer demand and its ability to supply its products to its customers; raw material shortages, supply and labor constraints and price increases, pricing and inflationary pressures and rising interest rates; operational, political and legal risks of the Company's international operations; the Company's dependence on sole source and limited source suppliers; the Company's ability to meet rapid demand shifts; the Company's ability to continue technological innovation and introduce new products to meet customers' rapidly changing requirements; substantial competition; the Company's concentrated customer base; the Company's ability to identify, complete and integrate acquisitions, joint ventures or other transactions; the Company's ability to effectively implement any organizational changes; the Company's ability to protect and enforce intellectual property

rights; the ongoing conflict in Ukraine and the global response thereto; the increasing complexity of certain manufacturing processes; changes in government regulations of the countries in which the Company operates, including the imposition of tariffs, export controls and other trade laws and restrictions and changes to national security and international trade policy, especially as they relate to China; fluctuation of currency exchange rates; fluctuations in the market price of the Company's stock; and other risk factors and additional information described in the Company's filings with the Securities and Exchange Commission (the "SEC"), including under the heading "Risk Factors" in Item 1A of the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2021, filed on February 4, 2022, and in the Company's other SEC filings. Except as required under the federal securities laws and the rules and regulations of the SEC, the Company undertakes no obligation to update publicly any forward-looking statements or information contained herein, which speak as of their respective dates.

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 GAAP. 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. Further information with respect to and reconciliations of such measures to the most directly comparable GAAP measure can be found attached to this presentation.

2

Summary - Consolidated Statement of Operations (GAAP)

$ in millions, except per share data	3Q22	2Q22	3Q21	3Q22 over 3Q21	3Q22 over 2Q22
Net Revenue	$993.8	$692.5	$579.5	71.5%	43.5%
Gross Margin	37.4%	44.8%	45.6%
Operating Expenses	$356.8	$152.4	$124.8	185.8%	134.1%
Operating Income	$14.9	$158.0	$139.4	(89.3%)	(90.6%)
Operating Margin	1.5%	22.8%	24.0%
Tax Rate	8.7%	15.0%	8.3%
Net (Loss) Income	$(73.7)	$99.5	$117.5	(162.7%)	(174.1%)
Diluted (Loss) Earnings Per Common	$(0.50)	$0.73	$0.86	(158.1%)	(168.5%)
Share

3

Summary - Consolidated Statement of Operations (Non-GAAP)1

$ in millions, except per share data	3Q22	2Q22	3Q21	3Q22 over 3Q21	3Q22 over 2Q22
Net Revenue	$993.8	$692.5	$579.5	71.5%	43.5%
Adjusted Gross Margin - as a % of Net	43.6%	44.8%	45.6%
Sales2
Non-GAAP Operating Expenses3	$180.4	$127.4	$111.5	61.8%	41.6%
Adjusted Operating Income	$253.2	$183.0	$152.7	65.8%	38.3%
Adjusted Operating Margin	25.5%	26.4%	26.3%
Non-GAAP Tax Rate4	21.2%	17.0%	11.4%
Non-GAAP Net Income5	$127.8	$136.8	$125.4	1.9%	(6.6%)
Diluted Non-GAAP Earnings Per	$0.85	$1.00	$0.92	(7.6%)	(15.0%)
Common Share

1. See GAAP to non-GAAP reconciliation tables in the appendix of this presentation.
2. Excludes charges for fair value write-up of acquired inventory sold.
3. Excludes amortization expense, deal and transaction costs, integration costs and severance and restructuring costs.
4. Reflects the tax effect of non-GAAP adjustments and discrete tax items to GAAP taxes.
5. Excludes the items noted in footnotes 2 and 3, interest expense, net and the tax effect of non-GAAP adjustments.

4

Microcontamination Control (MC)

3Q22 Highlights

				3Q22 over	3Q22 over
$ in millions	3Q22	2Q22	3Q21	3Q21	2Q22
Net Revenue	$280.6	$274.1	$225.9	24.2%	2.4%
Segment Profit	$105.3	$100.1	$78.4	34.3%	5.2%
Segment Profit Margin	37.5%	36.5%	34.7%
Adj. Segment Profit1	$105.3	$100.1	$78.5	34.1%	5.2%
Adj. Segment Profit Margin1	37.5%	36.5%	34.7%

Sales growth (YOY) was strong across all major product lines, including liquid filtration, gas purification and gas filtration.

------

Segment profit margin (adjusted) increase was driven primarily by strong overall execution and favorable product mix.

1. See GAAP to non-GAAP reconciliation tables in the appendix of this presentation.

5