X0306 4 2019-03-07 0000062996 MASCO CORP /DE/ MAS 0001199190 LOSH J MICHAEL 1711 HERON RIDGE DR. BLOOMFIELD HILLS MI 48302 1 Common Stock 2019-03-07 4 M 0 9117.0000 8.7923 A 16543.0000 D Common Stock 2019-03-07 4 S 0 9117.0000 38.7509 D 7426.0000 D Common Stock 57063.0000 I By GRAT Non-Employee Director Stock Option 8.7923 2019-03-07 4 M 0 9117.0000 D 2019-05-12 Common Stock 9117.0000 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 $38.750 to $38.755, 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 this footnote (1) to this Form 4. These shares were previously reported as directly owned, but were contributed to a grantor retained annuity trust on August 9, 2018. In connection with the spin-off of TopBuild Corp. by Masco Corporation ("Masco") on June 30, 2015, outstanding stock options granted under the Masco 2014 Long Term Stock Incentive Plan by Masco to all plan participants, including to the reporting person, were adjusted on a value neutral basis to preserve the options' pre-spin intrinsic value. This option became exercisable in five equal annual installments commencing May 12, 2010. 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 2019-03-08