ENTG

EX-99.1

2 entgq22026ex991.htm

EX-99.1

Document

PRESS RELEASE

Jeffrey Schnell

Vice President, Investor Relations

T + 1 201 207 3029

jeffrey.schnell@entegris.com

Exhibit 99.1

ENTEGRIS REPORTS RESULTS FOR SECOND QUARTER OF 2026

•Net sales of $883 million.

•GAAP diluted EPS of $0.61.

•Non-GAAP diluted EPS of $0.93.

BILLERICA, Mass., August 4, 2026 - Entegris, Inc. (NASDAQ: ENTG), today reported its financial results for the Company’s second quarter ended June 27, 2026.

Dave Reeder, Entegris’ President and Chief Executive Officer, said: “We delivered another strong quarter, exceeding our guidance across all key metrics as improving semiconductor demand and accelerating customer capital investments drove double-digit growth across both our unit and capex-related businesses. Our operational initiatives continued to enhance profitability and cash generation, further strengthening our financial position. The next phase of semiconductor investment is underway, and with market-leading positions across our portfolio, growing participation at the industry's most advanced technology nodes, and a strong innovation engine, we are uniquely positioned to translate this opportunity into sustained growth and long-term shareholder value.”

Quarterly Financial Results Summary

(in millions, except percentages and per share data)

GAAP Results Jun 27, 2026Jun 28, 2025Mar 28, 2026

Net sales$883.2$792.4$811.9

Gross margin - as a % of net sales47.6%44.4%46.9%

Operating margin - as a % of net sales18.6%13.4%17.4%

Net income $93.6$52.8$92.0

Diluted earnings per common share$0.61$0.35$0.60

Non-GAAP ResultsJun 27, 2026Jun 28, 2025Mar 28, 2026

Adjusted gross margin - as a % of net sales47.6%44.6%46.9%

Adjusted operating margin - as a % of net sales24.5%20.9%23.6%

Adjusted EBITDA - as a % of net sales28.4%27.3%27.8%

Diluted non-GAAP earnings per common share$0.93$0.66$0.86

Third Quarter of 2026 Outlook

For the Company’s guidance for the third quarter ending September 26, 2026, the Company expects sales of $905 million to $935 million. The Company expects GAAP net income to be between $116 million and $128 million and diluted earnings per common share is expected to be between $0.75 and $0.83. On a non-GAAP basis, the Company expects diluted earnings per common share to range from $0.96 to $1.04, reflecting net income on a non-GAAP basis in the range of $148 million to $160 million. The Company also expects Adjusted EBITDA of approximately 28.0% to 29.0% of sales.

Segment Results

The Company currently operates in two segments:

Materials Solutions (MS): MS provides materials-based solutions, such as chemical vapor and atomic layer deposition materials, chemical mechanical planarization slurries and pads, ion implantation specialty gases, formulated etch and clean materials, and other specialty materials that enable our customers to achieve better device performance and faster time to yield, while providing for lower total cost of ownership.

Advanced Purity Solutions (APS): APS offers filtration, purification and contamination-control solutions that improve customers’ yield, device reliability and cost by ensuring the purity of critical liquid chemistries and gases and the cleanliness of wafers and other substrates used throughout semiconductor manufacturing processes, the semiconductor ecosystem and other high-technology industries.

Second Quarter Results Conference Call

Entegris will hold a conference call to discuss its results for the second quarter on Tuesday, August 4, 2026, at 9:00 a.m. Eastern Time. Participants should dial 833-316-1983 or +1 785-838-9310, referencing confirmation ID: ENTGQ226. Participants are asked to dial in 10 minutes prior to the start of the call. For the live webcast and replay of the call, please Click Here.

Management’s slide presentation concerning the results for the second quarter will be posted on the Investor Relations section of www.entegris.com.

About Entegris

Entegris is a leading supplier of critical advanced materials and process solutions for the semiconductor and other high-technology industries. Entegris has approximately 7,700 employees throughout its global operations and is ISO 9001 certified. It has manufacturing, customer service and/or research facilities in the United States, Canada, China, Germany, Israel, Japan, Malaysia, Singapore, South Korea, and Taiwan. Additional information can be found at www.entegris.com.

Non-GAAP Information

The Company’s condensed consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States (GAAP). Adjusted Net Sales, Adjusted EBITDA, Adjusted Gross Profit, Adjusted Segment Profit, Adjusted Operating Income, non-GAAP Net Income, non-GAAP Adjusted Operating Margin and diluted non-GAAP Earnings Per Common Share, together with related measures thereof, are considered “non-GAAP financial measures” under the rules and regulations of the Securities and Exchange Com

EX-99.1

2 entgq12026ex991.htm

EX-99.1

Document

PRESS RELEASE

Jeffrey Schnell

Vice President, Investor Relations

T + 1 201 207 3029

jeffrey.schnell@entegris.com

Exhibit 99.1

ENTEGRIS REPORTS RESULTS FOR FIRST QUARTER OF 2026

•Net sales of $812 million.

•GAAP diluted EPS of $0.60.

•Non-GAAP diluted EPS of $0.86.

BILLERICA, Mass., April 30, 2026 - Entegris, Inc. (NASDAQ: ENTG), today reported its financial results for the Company’s first quarter ended March 28, 2026.

Dave Reeder, Entegris’ President and Chief Executive Officer, said: “Entegris delivered solid first quarter results, continuing our trend of disciplined execution and focused customer engagement. Revenue grew 5% year-over-year, primarily driven by increasing unit-driven volumes related to the industry’s most advanced manufacturing processes. Adjusted gross margin, adjusted EBITDA margin and non-GAAP EPS all exceeded our guidance range. Strong cash generation allowed us to reduce leverage while continuing to invest in our customers’ technology roadmaps.”

Mr. Reeder added: “Despite geopolitical tensions, the semiconductor market continues to improve, driven by accelerating AI-related demand. This momentum is reflected in strengthening order patterns across our portfolio. Entegris’ differentiated product portfolio is well positioned to capture incremental content from industry node migrations and manufacturing capacity expansions.”

Quarterly Financial Results Summary

(in millions, except percentages and per share data)

GAAP Results Mar 28, 2026Mar 29, 2025Dec 31, 2025

Net sales$811.9$773.2$823.9

Gross margin - as a % of net sales46.9%46.1%43.8%

Operating margin - as a % of net sales17.4%15.8%12.7%

Net income $92.0$62.9$49.4

Diluted earnings per common share$0.60$0.41$0.32

Non-GAAP ResultsMar 28, 2026Mar 29, 2025Dec 31, 2025

Adjusted gross margin - as a % of net sales46.9%46.1%44.0%

Adjusted operating margin - as a % of net sales23.6%22.1%21.2%

Adjusted EBITDA - as a % of net sales27.8%28.5%27.7%

Diluted non-GAAP earnings per common share$0.86$0.67$0.70

Second Quarter of 2026 Outlook

For the Company’s guidance for the second quarter ending June 27, 2026, the Company expects sales of $815 million to $845 million. We expect GAAP net income to be between $82 million and $94 million and diluted earnings per common share is expected to be between $0.53 and $0.61. On a non-GAAP basis, the Company expects diluted earnings per common share to range from $0.76 to $0.84, reflecting net income on a non-GAAP basis in the range of $116 million to $129 million. The Company also expects Adjusted EBITDA of approximately 27.0% to 28.0% of sales.

Segment Results

The Company currently operates in two segments:

Materials Solutions (MS): MS provides materials-based solutions, such as chemical vapor and atomic layer deposition materials, chemical mechanical planarization slurries and pads, ion implantation specialty gases, formulated etch and clean materials, and other specialty materials that enable our customers to achieve better device performance and faster time to yield, while providing for lower total cost of ownership.

Advanced Purity Solutions (APS): APS offers filtration, purification and contamination-control solutions that improve customers’ yield, device reliability and cost by ensuring the purity of critical liquid chemistries and gases and the cleanliness of wafers and other substrates used throughout semiconductor manufacturing processes, the semiconductor ecosystem and other high-technology industries.

First Quarter Results Conference Call

Entegris will hold a conference call to discuss its results for the first quarter on Thursday, April 30, 2026, at 8:00 a.m. Eastern Time. Participants should dial 833-316-1983 or +1 785-838-9310, referencing confirmation ID: ENTGQ126. Participants are asked to dial in 10 minutes prior to the start of the call. For the live webcast and replay of the call, please Click Here.

Management’s slide presentation concerning the results for the first quarter will be posted on the Investor Relations section of www.entegris.com.

About Entegris

Entegris is a leading supplier of critical advanced materials and process solutions for the semiconductor and other high-technology industries. Entegris has approximately 7,700 employees throughout its global operations and is ISO 9001 certified. It has manufacturing, customer service and/or research facilities in the United States, Canada, China, Germany, Israel, Japan, Malaysia, Singapore, South Korea, and Taiwan. Additional information can be found at www.entegris.com.

Non-GAAP Information

The Company’s condensed consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States (GAAP). Adjusted Net Sales, Adjusted EBITDA, Adjusted Gross Profit, Adjusted Segment Profit, Adjusted Operating Income, non-GAAP Net Income, non-GAAP Adjusted Operating Margin and diluted non-GAAP Earnings Per Commo

entg-202602100001101302ENTEGRIS INCfalse00011013022026-02-102026-02-10

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) February 10, 2026

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On February 10, 2026, Entegris, Inc. (the "Company") issued a press release to announce results for the fourth quarter of 2025 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated February 10, 2026

99.2 Fourth Quarter Earnings Release Presentation Slides, dated February 10, 2026

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: February 10, 2026 By:/s/ Linda LaGorga Name:Linda LaGorga Title:Senior Vice President and Chief Financial Officer

entg-202510300001101302ENTEGRIS INCfalse00011013022025-10-302025-10-30

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) October 30, 2025

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On October 30, 2025, Entegris, Inc. (the "Company") issued a press release to announce results for the third quarter of 2025 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated October 30, 2025

99.2 Third Quarter Earnings Release Presentation Slides, dated October 30, 2025

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: October 30, 2025 By:/s/ Linda LaGorga Name:Linda LaGorga Title:Senior Vice President and Chief Financial Officer

entg-202507300001101302ENTEGRIS INCfalse00011013022025-07-302025-07-30

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) July 30, 2025

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On July 30, 2025, Entegris, Inc. (the "Company") issued a press release to announce results for the second quarter of 2025 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated July 30, 2025

99.2 Second Quarter Earnings Release Presentation Slides, dated July 30, 2025

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: July 30, 2025 By:/s/ Linda LaGorga Name:Linda LaGorga Title:Senior Vice President and Chief Financial Officer

entg-202505070001101302ENTEGRIS INCfalse00011013022025-05-072025-05-07

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) May 7, 2025

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On May 7, 2025, Entegris, Inc. (the "Company") issued a press release to announce results for the first quarter of 2025 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated May 7, 2025

99.2 First Quarter Earnings Release Presentation Slides, date May 7, 2025

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: May 7, 2025 By:/s/ Linda LaGorga Name:Linda LaGorga Title:Senior Vice President and Chief Financial Officer

entg-202502060001101302ENTEGRIS INCfalse00011013022025-02-062025-02-06

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) February 6, 2025

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On February 6, 2025, Entegris, Inc. (the "Company") issued a press release to announce results for the fourth quarter of 2024 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated February 6, 2025

99.2 Fourth Quarter Earnings Release Presentation Slides, date February 6, 2025

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: February 6, 2025 By:/s/ Linda LaGorga Name:Linda LaGorga Title:Senior Vice President and Chief Financial Officer

entg-202411040001101302ENTEGRIS INCfalse00011013022024-11-042024-11-04

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) November 4, 2024

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On November 4, 2024, Entegris, Inc. (the "Company") issued a press release to announce results for the third quarter of 2024 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated November 4, 2024

99.2 Third Quarter Earnings Release Presentation Slides, dated November 4, 2024

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: November 4, 2024 By:/s/ Linda LaGorga Name:Linda LaGorga Title:Senior Vice President and Chief Financial Officer

entg-202407310001101302ENTEGRIS INCfalse00011013022024-07-312024-07-31

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) July 31, 2024

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On July 31, 2024, Entegris, Inc. (the "Company") issued a press release to announce results for the second quarter of 2024 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated July 31, 2024

99.2 Second Quarter Earnings Release Presentation Slides, dated July 31, 2024

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: July 31, 2024 By:/s/ Linda LaGorga Name:Linda LaGorga Title:Senior Vice President and Chief Financial Officer

entg-202405010001101302ENTEGRIS INCfalse00011013022024-05-012024-05-01

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) May 1, 2024

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On May 1, 2024, Entegris, Inc. (the "Company") issued a press release to announce results for the first quarter of 2024 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated May 1, 2024

99.2 First Quarter Earnings Release Presentation Slides, dated May 1, 2024

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: May 1, 2024 By:/s/ Linda LaGorga Name:Linda LaGorga Title:Senior Vice President and Chief Financial Officer

entg-202402130001101302ENTEGRIS INCfalse00011013022024-02-132024-02-13

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) February 13, 2024

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On February 13, 2024, Entegris, Inc. (the "Company") issued a press release to announce results for the fourth quarter of 2023. A copy of this press release and supplemental slides are furnished as Exhibit 99.1 and Exhibit 99.2, respectively, attached hereto and are incorporated herein by reference. The information furnished in this Item 2.02, and in Exhibits 99.1 and 99.2, shall not be deemed “filed” for purposes of the Securities Exchange Act of 1934, as amended, nor shall such information be deemed automatically incorporated by reference into any filing under the Securities Act of 1933, as amended. Item 7.01.    Regulation FD Disclosure. On February 14, 2024, Bertrand Loy, President, Chief Executive Officer and Chair of the Board of Directors of the Company, and Linda LaGorga, Senior Vice President and Chief Financial Officer of the Company, will provide a brief analyst update via a webcast hosted by the Company at 9:00 a.m. ET. In lieu of a webcast presentation regarding the Company's financial results for its fourth quarter of 2023, the Company has prepared the remarks furnished as Exhibit 99.3 attached hereto. The information furnished in this Item 7.01, and in Exhibit 99.3, shall not be deemed “filed” for purposes of the Securities Exchange Act of 1934, as amended, nor shall such information be deemed automatically incorporated by reference into any filing under the Securities Act of 1933, as amended. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated February 13, 2024

99.2 Fourth Quarter Earnings Release Presentation Slides, dated February 13, 2024

99.3Prepared Remarks from Management, dated February 13, 2024

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: February 13, 2024 By:/s/ Linda LaGorga Name:Linda LaGorga Title:Senior Vice President and Chief Financial Officer

entg-202311020001101302ENTEGRIS INCfalse00011013022023-11-022023-11-02

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) November 2, 2023

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On November 2, 2023, Entegris, Inc. issued a press release to announce results for the third quarter of 2023 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated November 2, 2023

99.2 Third Quarter Earnings Release Presentation Slides, dated November 2, 2023

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: November 2, 2023 By:/s/ Linda LaGorga Name:Linda LaGorga Title:Senior Vice President and Chief Financial Officer

entg-202308030001101302ENTEGRIS INCfalse00011013022023-08-032023-08-03

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) August 3, 2023

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On August 3, 2023, Entegris, Inc. issued a press release to announce results for the second quarter of 2023 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated August 3, 2023

99.2 Second Quarter Earnings Release Presentation Slides, dated August 3, 2023

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: August 3, 2023 By:/s/ Linda LaGorga Name:Linda LaGorga Title:Senior Vice President and Chief Financial Officer

entg-202305110001101302ENTEGRIS INCfalse00011013022023-05-112023-05-11

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) May 11, 2023

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On May 11, 2023, Entegris, Inc. issued a press release to announce results for the first quarter of 2023 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated May 11, 2023

99.2 First Quarter Earnings Release Presentation Slides, dated May 11, 2023

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: February 14, 2023By:/s/ Gregory B. Graves Name:Gregory B. Graves Title:Executive Vice President and Chief Financial Officer

entg-202302140001101302ENTEGRIS INCfalse00011013022023-02-142023-02-14

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) February 14, 2023

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On February 14, 2023, Entegris, Inc. issued a press release to announce results for the fourth quarter of 2022 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated February 14, 2023

99.2 Fourth Quarter Earnings Release Presentation Slides, dated February 14, 2023

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: February 14, 2023By:/s/ Gregory B. Graves Name:Gregory B. Graves Title:Executive Vice President and Chief Financial Officer

entg-202211020001101302ENTEGRIS INCfalse00011013022022-11-022022-11-02

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) November 2, 2022

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On November 2, 2022, Entegris, Inc. issued a press release to announce results for the third quarter of 2022 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated November 2, 2022

99.2 Third Quarter Earnings Release Presentation Slides, dated November 2, 2022

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: November 2, 2022By:/s/ Gregory B. Graves Name:Gregory B. Graves Title:Executive Vice President and Chief Financial Officer

entg-202208020001101302ENTEGRIS INCfalse00011013022022-08-022022-08-02

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) August 2, 2022

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On August 2, 2022, Entegris, Inc. issued a press release to announce results for the second quarter of 2022 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated August 2, 2022

99.2 Second Quarter Earnings Release Presentation Slides, dated August 2, 2022

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: August 2, 2022By:/s/ Gregory B. Graves Name:Gregory B. Graves Title:Executive Vice President and Chief Financial Officer

entg-202204260001101302ENTEGRIS INCfalse00011013022022-04-262022-04-26

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) April 26, 2022

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On April 26, 2022, Entegris, Inc. issued a press release to announce results for the first quarter of 2022 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated April 26, 2022

99.2 First Quarter Earnings Release Presentation Slides, dated April 26, 2022

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: April 26, 2022By:/s/ Gregory B. Graves Name:Gregory B. Graves Title:Executive Vice President and Chief Financial Officer

entg-202202010001101302ENTEGRIS INCfalse00011013022022-02-012022-02-01

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) February 1, 2022

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☒ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On February 1, 2022, Entegris, Inc. issued a press release to announce results for the fourth quarter of 2021 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated February 1, 2022

99.2 Fourth Quarter Earnings Release Presentation Slides, dated February 1, 2022

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: February 1, 2022By:/s/ Gregory B. Graves Name:Gregory B. Graves Title:Executive Vice President and Chief Financial Officer

entg-202110260001101302ENTEGRIS INCfalse00011013022021-10-262021-10-26

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTIONS 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported) October 26, 2021

Entegris, Inc. (Exact name of registrant as specified in its charter)

Delaware001-32598 41-1941551 (State or Other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

129 Concord Road,Billerica,MA 01821 (Address of principal executive offices) (Zip Code)

(978) 436-6500 (Registrant’s telephone number, including area code) N/A (Former Name or Former 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: ☐ 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 classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareENTGThe Nasdaq Stock Market LLC

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. ☐

Item 2.02.    Results of Operations and Financial Condition. On October 26, 2021, Entegris, Inc. issued a press release to announce results for the third quarter of 2021 and will hold a conference call to discuss such results. A copy of this press release and the supplemental slides to which management will refer during the conference call are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. In accordance with General Instructions B.2 of Form 8-K, the information in this Item 2.02 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing. The information set forth herein will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD. Item 9.01.    Financial Statements and Exhibits. (d) Exhibits

EXHIBIT INDEX

Exhibit No. Description 99.1 Press Release, dated October 26, 2021

99.2 Third Quarter Earnings Release Presentation Slides, dated October 26, 2021

104Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 thereunto duly authorized.

ENTEGRIS, INC.

Dated: October 26, 2021By:/s/ Gregory B. Graves Name:Gregory B. Graves Title:Executive Vice President and Chief Financial Officer