X0306 4 2021-05-03 0000062996 MASCO CORP /DE/ MAS 0001582303 Cole Kenneth G. 17450 COLLEGE PARKWAY LIVONIA MI 48152 1 VP, General Counsel and Sec. Common Stock 2021-05-03 4 M 0 17094.0000 19.6641 A 89869.0000 D Common Stock 2021-05-03 4 S 0 15000.0000 65.1240 D 74869.0000 D Common Stock 2021-05-03 4 S 0 17094.0000 65.1030 D 57775.0000 D Employee Stock Option 19.6641 2021-05-03 4 M 0 17094.0000 D 2024-02-12 Common Stock 17094.0000 0.0000 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.11 to $65.18, inclusive. The reporting person undertakes to provide to Masco Corporation, any security holder of Masco Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) and (2) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.09 to $65.17, inclusive. In connection with the spin-off of TopBuild Corp. by Masco Corporation ("Masco") on June 30, 2015, outstanding unvested restricted stock awards granted by Masco to all equity plan participants, including to the reporting person, were adjusted on a value neutral basis to preserve the awards' pre-spin intrinsic value. This option became exercisable in five equal annual installments commencing February 12, 2015. Grant of option under the Masco Corporation 2014 Long Term Stock Incentive Plan in transactions exempt under Rule 16b-3. Yvette M. VanRiper by Power of Attorney 2021-05-05