MTX: Other company developments

Item 8.01. Other Events. Announcement of Notes Offering On October 1, 2026, Minerals Technologies Inc. (the “Company”) issued a press release announcing the commencement of a private offering of senior notes (the “Notes”) in a transaction exempt from registration under the Securities Act of 1933, as amended (the “Securities Act”), a copy of which is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The Notes and the related guarantees have not been registered under the Securities Act or the securities laws of any other jurisdiction and may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements of the Securities Act and applicable state laws. This current report does not constitute an offer to sell or a solicitation of an offer to buy the securities, nor shall there be any sale of the securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. Forward-Looking Statements This current report contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, including statements regarding the offering and the intended use of the proceeds thereof. Forward-looking statements provide current expectations and forecasts of future events such as new products, revenues, and financial performance, and are not limited to describing historical or current facts. They can be identified by the use of words such as “outlook,” “forecast,” “believes,” “expects,” “plans,” “intends,” “anticipates,” and other words and phrases of similar meaning. Forward-looking statements are necessarily based on assumptions, estima