Executive Change

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549     FORM 8-K   CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934   Date of report (Date of earliest event reported): December 16, 2025   Masco Corporation (Exact name of Registrant as Specified in Charter)   Delaware   1-5794   38-1794485 (State or Other Jurisdiction of Incorporation)   (Commission File Number)   (I.R.S. Employer Identification No.)   17450 College Parkway , Livonia , Michigan 48152 (Address of Principal Executive Offices)   (Zip Code)   ( 313 ) 274-7400 (Registrant’s telephone number, including area code)   Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:   ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)   ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)   ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))   ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))   Securities registered pursuant to Section 12(b) of the Act:   Title of each class   Trading Symbol   Name of each exchange on which registered Common Stock, $1.00 par value   MAS   New York Stock Exchange   Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2).   ☐ 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 any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐           Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.   On December 16, 2025, the Company’s Board of Directors appointed Mr. Gary A. Coombe as a Class II Director, effective January 1, 2026. He will serve on the Audit Committee and on the Corporate Governance and Nominating Committee of the Company’s Board of Directors. Mr. Coombe, 61, has served as the Procter & Gamble Company’s Chief Executive Officer - Grooming since 2018. Since joining P&G in 1986, he has served in various global leadership positions of increasing responsibility.   There are no understandings or arrangements between Mr. Coombe and any other person pursuant to which Mr. Coombe was selected as a director of the Company. Mr. Coombe has no family relationship with any director or executive officer of the Company or any person nominated or chosen by the Company to become a director or executive officer. There are no transactions in which Mr. Coombe has an interest requiring disclosure under Item 404(a) of Regulation S-K. Additionally, the Board determined that Mr. Coombe satisfies the applicable independence requirements set forth in the rules and regulations of the New York Stock Exchange and the Securities and Exchange Commission. For his service on the Company’s Board of Directors, Mr. Coombe will receive compensation in accordance with the Company’s standard compensation arrangements for nonemployee directors.   1     SIGNATURE   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.     MASCO CORPORATION         By: /s/ Richard J. Westenberg   Name: Richard J. Westenberg   Title: Vice President, Chief Financial Officer and Treasurer   December 16, 2025   2