X0306 4 2021-10-27 0000062996 MASCO CORP /DE/ MAS 0001623468 O'Reagan Richard A. 17450 COLLEGE PARKWAY LIVONIA MI 48152 1 Group President Common Stock 2021-10-27 4 M 0 43500.0000 25.5100 A 98342.0000 D Common Stock 2021-10-27 4 S 0 100.0000 66.0400 D 98242.0000 D Common Stock 2021-10-27 4 S 0 20206.0000 65.1235 D 78036.0000 D Common Stock 2021-10-27 4 S 0 23194.0000 64.5244 D 54842.0000 D Employee Stock Option 25.5100 2021-10-27 4 M 0 43500.0000 D 2026-02-10 Common Stock 43500.0000 0.0000 D This transaction was made pursuant to a 10b5-1 trading plan entered into by the reporting person. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.00 to $65.98, 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 (2) and (3) 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 $64.00 to $64.99, inclusive. This option became exercisable in five equal annual installments commencing February 10, 2017. 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 2021-10-28