FORM 10-Q☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended April 5, 2026 or ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-11430 MINERALS TECHNOLOGIES INC.(Exact name of registrant as specified in its charter) Delaware25-1190717(State or other jurisdiction of incorporation or organization)(I.R.S. Employer Identification No.) 622 Third Avenue, New York, New York 10017-6707(Address of principal executive offices, including zip code) (212) 878-1800(Registrant’s telephone number, including area code) Securities registered pursuant to Section 12(b) of the Act: Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities Exchange Act of1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to suchfiling requirements for the past 90 days. Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submitsuch files). Yes☒No☐ Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, orand emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerginggrowth company” in Rule 12b-2 of the Exchange Act. Accelerated Filer☐Smaller Reporting Company☐ Large Accelerated Filer☒Non-accelerated Filer☐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 anynew or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes☐No☒ As of April 22, 2026, there were 31,008,734 shares of common stock, par value of $0.10 per share, of the registrant outstanding. MINERALS TECHNOLOGIES INC.INDEX TO FORM 10-Q PART I.FINANCIAL INFORMATION Item 1.Financial Statements:Condensed Consolidated Statements of Income (Loss) for thethree-month periods ended April 5, 2026 and March30, 2025 (Unaudited)3Condensed Consolidated Statements of Comprehensive Income (Loss) for the three-month periods ended April 5,2026 and March 30, 2025 (Unaudited)4Condensed Consolidated Balance Sheets as of April 5, 2026 (Unaudited) and December 31, 20255Condensed Consolidated Statements of Cash Flows for the three-month periods ended April 5, 2026 and March30, 2025 (Unaudited)6Condensed Consolidated Statements of Changes in Shareholders’ Equity for the three-month periods ended April5, 2026 , and March 30, 2025 (Unaudited)7Notes to Condensed Consolidated Financial Statements (Unaudited)8Report of Independent Registered Public Accounting Firm20Item 2.Management’s Discussion and Analysis of Financial Condition and Results of Operations21Item 3.Quantitative and Qualitative Disclosures about Market Risk29Item 4.Controls and Procedures30PART II.OTHER INFORMATIONItem 1.Legal Proceedings30Item 1A.Risk Factors30Item 2.Unregistered Sales of Equity Securities and Use of Proceeds30Item 3.Default Upon Senior Securities30Item 4.Mine Safety Disclosures30Item 5.Other Information31Item 6.Exhibits31Signature322 MINERALS TECHNOLOGIES INC. AND SUBSIDIARY COMPANIESCONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)(Unaudited) MINERALS TECHNOLOGIES INC. AND SUBSIDIARY COMPANIESCONDENSED CONSOLIDATED BALANCE SHEETS LIABILITIES AND SHAREHOLDERS' EQUITY Long-term debt, net of unamortized discount and deferred financing costs954.0955.0Deferred income taxes90.890.7Accrued pension and postretirement benefits16.819.5Other non-current liabilities98.898.7Total liabilities1,703.81,719.3 See accompanying Notes to Condensed Consolidated Financial Statements. MINERALS TECHNOLOGIES INC. AND SUBSIDIARY COMPANIESCONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS(Unaudited) MINERALS TECHNOLOGIES INC. AND SUBSIDIARY COMPANIESNOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Unaudited) Note 1.Basis of Presentation and Summary of Significant Accounting Policies The accompanying unaudited Condensed Consolidated Financial Statements have been prepared by management of MineralsTechnologies Inc. (together with its subsidiaries, the “Company,” “MTI,” “we,”“us,” or “our”) in accordance with the rules andregulations of the United States Securities and Exchange Commission. Accordingly, certain information and footnote disclosuresnormally included in financial statements prepared in accordance with U.S. generally accepted a