8-K/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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FORM 8-K/A

(Amendment No. 1)

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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 16, 2025

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Entegris, Inc.

(Exact name of registrant as specified in its charter)

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(978) 436-6500

(Registrant’s telephone number, including area code)

N/A

(Former Name or Former Address, if Changed Since Last Report)

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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:

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. ☐

EXPLANATORY NOTE

Entegris, Inc. (the “Company”) is filing this amendment (this “Amendment”) to the Current Report on Form 8-K originally filed by the Company with the Securities and Exchange Commission on July 16, 2025 (the “Original Filing”) solely for the purpose of correcting a scrivener’s error in the signature block of the Original Filing. This Amendment does not otherwise modify or update in any way the disclosures made in the Original Filing.

Item 8.01.    Other Events.

On July 16, 2025, Entegris, Inc. announced that its board of directors has declared a quarterly cash dividend of $0.10 per share to be paid on August 20, 2025 to shareholders of record on the close of business on July 30, 2025. A copy of this news release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Item 9.01.    Financial Statements and Exhibits.

(d) Exhibits

EXHIBIT INDEX

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.

Document

Exhibit 99.1

ENTEGRIS DECLARES QUARTERLY CASH DIVIDEND

BILLERICA, Mass., July 16, 2025 - Entegris, Inc. (Nasdaq: ENTG), a leading supplier of critical advanced materials and process solutions for the semiconductor and other high-technology industries, today announced that its board of directors has authorized a quarterly cash dividend of $0.10 per share to be paid on August 20, 2025, to shareholders of record on the close of business on July 30, 2025.

ABOUT ENTEGRIS

Entegris is a leading supplier of critical advanced materials and process solutions for the semiconductor and other high-tech industries. Entegris has approximately 8,000 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.