MasterBrand, Inc. 10-Q

Item 5. OTHER INFORMATION Rule 10b5-1 Trading Plans During the fiscal quarter ended March 29, 2026, none of the Company’s directors or executive officers adopted , modified or terminated any “Rule 10b5-1 trading arrangement or “non-Rule 10b5-1 trading arrangement” as defined under Item 408 of Regulation S-K. 30 Table of Contents Item 6. EXHIBITS Incorporated by reference herein Exhibit Number Description Form Date 3.1 Corrected and Amended and Restated Certificate of Incorporation of MasterBrand, Inc., effective August 7, 2023 Current Report on Form 10-Q (File No. 001-41545) August 9, 2023 3.2 Amended and Restated Bylaws of MasterBrand, Inc., effective June 4, 2025 Current Report on Form 8-K (File No. 001-41545) June 4, 2025 10.1 Second Amendment to Amended and Restated Credit Agreement, dated as of March 26, 2026, among MasterBrand, Inc., a Delaware corporation, each other loan party, the lenders party thereto, and JPMorgan Chase Bank, N.A., as administrative agent. Current Report on Form 8-K (File No. 001-41545) March 26, 2026 31.1 * Certification of principal executive officer, as required by Section 302 of the Sarbanes-Oxley Act of 2002 31.2 * Certification of principal financial officer, as required by Section 302 of the Sarbanes-Oxley Act of 2002 32.1 * Certification of principal executive officer, as required by Section 906 of the Sarbanes-Oxley Act of 2002 32.2 * Certification of principal financial officer, as required by Section 906 of the Sarbanes-Oxley Act of 2002 101* The following materials from the Company’s Quarterly Report on Form 10-Q for the quarter ended March 29, 2026 formatted in Inline eXtensible Business Reporting Language (iXBRL): (i) the Cover Page, (ii) the Condensed Consolidated Statements of (Loss) Income, (iii) the Condensed Consolidated Statements of Comprehensive (Loss) Income, (iv) the Condensed Consolidated Balance Sheets, (v) the Condensed Consolidated Statements of Cash Flows, (vi) the Condensed Consolidated Statements of Equity, and (vii) the Notes to the Condensed Consolidated Financial Statements 104* Cover Page Interactive Data File (embedded within the iXBRL document) * Filed or furnished herewith. 31 Table of Contents 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, thereunto duly authorized. Date: May 6, 2026 MasterBrand, Inc. (Registrant) By: /s/ R. David Banyard, Jr. Name: R. David Banyard, Jr. Title: President and Chief Executive Officer By: /s/ Andrea H. Simon Name: Andrea H. Simon Title: Executive Vice President and Chief Financial Officer 32