(MAS)

Role: President and CEO, Director
Signature: Yvette M. VanRiper by Power of Attorney
Stock symbol: MAS
Transactions as of: Jul 13, 2023
Transactions value $: -$6,928,653
Form type: 4/A - Amendment
Date filed: 7/19/2023, 04:48 PM
Date Of Original Report: Jul 17, 2023
Previous filing: May 5, 2023
Next filing: Jan 16, 2024

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MAS	Common Stock	Options Exercise	$4.31M	+188K	+93.88%	$22.92	388K	Jul 13, 2023	Direct	F1
transaction	MAS	Common Stock	Sale	-$11.2M	-188K	-48.42%	$59.77	200K	Jul 13, 2023	Direct	F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MAS	Employee Stock Option	Options Exercise		-188K	-100%		0	Jul 13, 2023	Common Stock	188K	$22.92	Direct	F1, F3, F4, F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id	Content
F1	On July 17, 2023 the reporting person filed a Form 4 which inadvertently omitted the following footnote: The reported transaction occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 5, 2022.
F2	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $59.50 to $60.14, 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 range set forth in footnote (1) to this Form 4.
F3	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.
F4	This option became exercisable in five equal annual installments commencing February 11, 2016.
F5	Grant of option under the Masco Corporation 2014 Long Term Stock Incentive Plan in transactions exempt under Rule 16b-3.