MASCO CORP /DE/ — Director's Dealing 2004

May 13, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MASCO CORP /DE/ (MAS)
CIK: 0000062996
Period of Report: 2004-05-11

Reporting Person: LYON WAYNE B (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-05-11	Common Stock	A	550	—	Acquired	91251	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2004-05-11	Common Stock	$27.25	A	8000	Acquired	2014-05-11	Common Stock (8000)	Direct

Footnotes

F1: N/A

F2: The foregoing option is exercisable cumulatively in annual installments of 20% commencing 05/11/2005.

F3: Grant of option under Masco Corporation 1997 Non-Employee Directors Stock Plan, in transactions exempt under Rule 16b-3.