ANNUAL REPORT PURSUANT TO SECTION 15(d) OFTHE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025Commission file no. 1-11430 A.Full title of the plan and the address of the plan, if different from that of the issuer named below: MINERALS TECHNOLOGIES INC.SAVINGS AND INVESTMENT PLAN B.Name of issuer of the securities held pursuant to the plan and the address of its principal executive office: MINERALS TECHNOLOGIES INC. 622 Third AvenueNew York, New York, 10017-6707 Report of Independent Registered Public Accounting Firm To the Audit Committee, Plan Participants and Plan Administrator ofMinerals Technologies Inc. Savings and Investment Plan:Opinion on the Financial Statements We have audited the accompanying statements of net assets available for benefits of Minerals Technologies Inc. Savings andInvestment Plan (the “Plan”) as of December 31, 2025 and 2024, and the related statements of changes in net assets available forbenefits for the years then ended, and the related notes and schedules (collectively referred to as the “financial statements”). In ouropinion, the financial statements present fairly, in all material respects, the net assets available for benefits of Minerals Technologies Basis for Opinion These financial statements are the responsibility of the Minerals Technologies Inc. Savings and Investment Plan’s management. Ourresponsibility is to express an opinion on these financial statements based on our audits. We are a public accounting firm registeredwith the Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the auditsto obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.The Plan is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part ofour audits, we are required to obtain an understanding of internal control over financial reporting, but not for the purposes of Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to erroror fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidenceregarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used Supplemental Information The supplemental information in the accompanying Schedule H, Line 4i - Schedule of Assets (Held at End of Year) as of December31, 2025 has been subjected to audit procedures performed in conjunction with the audits of Minerals Technologies Inc. Savings andInvestment Plan’s financial statements. The supplemental information is the responsibility of the Minerals Technologies Inc. Savingsand Investment Plan’s management. Our audit procedures included determining whether the supplemental information reconciles tothe financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the MINERALS TECHNOLOGIES INC.SAVINGS AND INVESTMENT PLANStatements of Net Assets Available for Benefits Notes to Financial StatementsDecember 31, 2025 and 2024 (1)Description of Plan The following description of the Minerals Technologies Inc. Savings and Investment Plan (the “Plan”) provides only generalinformation.Participants should refer to the Plan agreement for a more complete description of the Plan's provisions. General The Plan is a defined contribution plan sponsored by Minerals Technologies Inc. (the “Company”).Employees who generally workmore than 20 hours per week become eligible to participate in the Plan on the date of their employment. The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”). The SECURE 2.0 Act of 2022 was signed into law on December 29, 2022. This legislation includes a vast array of provisional changesto retirement plans. Plan management is adopting any mandatory provisions as they become applicable and evaluating those provisionsdeemed discretionary.During 2025, the Plan was amended in accordance with the SECURE 2.0 Act of 2022. The age at whichparticipants are required to begin receiving minimum distributions was increased from age 72 to age 73 for participants who attain age Contributions Participants may elect to contribute between 2% and 20% of eligible earnings (as defined). Contributions may be made on a pre-taxbasis, on an after-tax basis, or on a combined basis.Employee contributions of the first 3% of the participants’ eligible contributionswill be matched 100% by the Company and the next 2% will be matched 50% by the Company to a maximum compensation limit of$350,000. Employee contributions in excess of 5% will not be