WEYERHAEUSER CO

EVALUATION OF DISCLOSURE CONTROLS AND PROCEDURES

Disclosure controls are controls and other procedures that are designed to ensure that information required to be disclosed in the reports filed or submitted under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by an issuer in the reports that it files or submits under the Act is accumulated and communicated to the issuer’s management, including its principal executive and principal financial officers, to allow timely decisions regarding required disclosure. The company’s principal executive officer and principal financial officer have concluded that the company’s disclosure controls and procedures were effective as of September 30, 2024, based on an evaluation of the company’s disclosure controls and procedures as of that date.

CHANGES IN INTERNAL CONTROLS

During third quarter 2024, we completed the implementation of a new enterprise resource planning (ERP) system, which we expect to improve the efficiency of certain financial and transactional processes. As a result of the ERP system implementation, certain internal controls over financial reporting have been modified or implemented to address the new control environment and processes associated with the new ERP system. There were no other changes in our internal control over financial reporting during the quarter ended September 30, 2024 that have materially affected, or are reasonably likely to materially affect, the company’s internal control over financial reporting.

PART II – OTHER INFORMATION