Results of Operations

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) October 24, 2017     Masco Corporation (Exact name of Registrant as Specified in Charter)   Delaware (State or Other Jurisdiction of Incorporation)   1-5794 (Commission File Number)   38-1794485 (IRS Employer Identification No.)   17450 College Parkway, Livonia, Michigan (Address of Principal Executive Offices)   48152 (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:   o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)   o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)   o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))   o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934. o 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. o     Item 2.02.  Results of Operations and Financial Condition.   Attached and incorporated herein by reference as Exhibit 99 is a copy of the press release dated October 24, 2017 reporting Masco Corporation’s financial results for the third quarter of 2017 and certain other information and supplemental information prepared for use in connection with the financial results for the third quarter 2017 . On October 24, 2017 , Masco Corporation will hold an investor conference call and webcast to discuss financial results for the third quarter 2017 .   This information, including the Exhibit attached hereto, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, or otherwise subject to the liabilities of that section. Item 9.01.  Financial Statements and Exhibits.   (d) Exhibits.   99   Press Release of Masco Corporation dated October 24, 2017 reporting Masco Corporation’s financial results for the third quarter 2017 and certain other information and supplemental information prepared for use in connection with the financial results for the third quarter 2017 . 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/ John G. Sznewajs   Name: John G. Sznewajs   Title: Vice President, Chief Financial Officer     October 24, 2017   2