MTX: Other company developments

Item 8.01 Other Events On May 19, 2026, the Company’s Board of Directors declared a regular quarterly dividend of $0.12 per share on the Company's common stock. The dividend is payable on June 18, 2026 to the stockholders of record on June 2, 2026. A copy of the press release announcing the dividend declaration is attached hereto as Exhibit 99.1 and incorporated by reference herein. Item 9.01 Financial Statements and Exhibits. (d) Exhibits 99.1 Press Release dated May 19, 2026 104 Cover Page Interactive Data File (formatted as inline XBRL) 2 SIGNATURES 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 hereunto duly authorized. MINERALS TECHNOLOGIES INC. (Registrant) By: /s/ Timothy J. Jordan Name: Timothy J. Jordan Title: Vice President, General Counsel, Secretary and Chief Compliance Officer Date: May 20, 2026