MASCO CORP DE

MASCO CORPORATION

Item 4.

CONTROLS AND PROCEDURES

a. Evaluation of Disclosure Controls and Procedures.

The Company's Principal Executive Officer and Principal Financial Officer have concluded, based on an evaluation of the Company's disclosure controls and procedures (as defined in the Securities Exchange Act of 1934 Rules 13a-15(e) or 15d-15(e)) as required by paragraph (b) of Exchange Act Rules 13a-15 or 15d-15 that, as of March 31, 2025, the Company's disclosure controls and procedures were effective.

b. Changes in Internal Control over Financial Reporting.

In connection with the evaluation of the Company's internal control over financial reporting that occurred during the quarter ended March 31, 2025, which is required under the Securities Exchange Act of 1934 by paragraph (d) of Exchange Rules 13a-15 or 15d-15 (as defined in paragraph (f) of Rule 13a-15), management determined that there was no change that materially affected or is reasonably likely to materially affect internal control over financial reporting.

During the second quarter of 2025, we plan to upgrade the enterprise resource planning system in one of our operating units within our Plumbing Products segment. The current system will be upgraded to a newer version and is not in response to any identified deficiency or weakness in the Company's internal control over financial reporting. However, this upgrade may involve complexities that could result in modification to certain internal controls at the operating unit.