WEYERHAEUSER CO

Integrity is a core value at Weyerhaeuser: we have a strong culture of ethics and integrity at every level of our company. Since our founding in 1900, we have consistently been recognized for our ethical business practices, compliance and high standards. In 2024, we were named for the 15th time as one of the World’s Most Ethical Companies® by Ethisphere Institute, a global leader in defining and advancing the standards of ethical business practices.

Our Code of Ethics is currently in its tenth edition and applies to all employees and members of our board. It is an expression of our commitment and shared responsibility to conduct our business affairs ethically with stakeholders, including employees, communities, customers, suppliers, contractors and shareholders. We will notify shareholders on our website at weyerhaeuser.com of any waiver granted by the board of directors under the Code of Ethics for an executive officer or director. No such waivers were granted for any executive officer or director in 2023. The current edition of the Code of Ethics is available on our website at weyerhaeuser.com/company/values/integrity/.