ENTG: Other company developments

Item 8.01. Other Events. On October 14, 2026, Entegris, Inc. announced that its board of directors has declared a quarterly cash dividend of $0.10 per share to be paid on November 18, 2026 to shareholders of record on the close of business on October 28, 2026 . 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 Exhibit No. Description 99.1 News Release, dated October 14, 2026. 104 Cover 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 14, 2026 By: /s/ Sukhi Nagesh Name: Sukhi Nagesh Title: Senior Vice President and Chief Financial Officer