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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): August 3, 2023

WEYERHAEUSER COMPANY

(Exact name of registrant as specified in charter)

220 Occidental Avenue South

Seattle, Washington 98104-7800

(Address of principal executive offices)

(zip code)

Registrant’s telephone number, including area code:

(206) 539-3000

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934:

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Section 5 – Corporate Governance and Management

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

(d) The board of directors of Weyerhaeuser Company (the "Company") has appointed James "Joc" C. O'Rourke to serve as a new director of the Company effective August 3, 2023. Mr. O'Rourke has not yet been appointed to a board committee. In connection with his appointment, the number of directors constituting the board of directors was increased from nine to ten.

Mr. O'Rourke is president and chief executive officer of The Mosaic Company, one of the world's leading producers of concentrated phosphate and potash crop nutrients, a position he has held since 2015. In previous roles with Mosaic, he was executive vice president–operations and chief operating officer from 2012 to 2015, and executive vice president – operations from 2009 to 2012. As a non-employee director, Mr. O'Rourke will receive a pro-rata portion of the $285,000 non-employee director retainer in the amount of $220,014 based on the time he will serve from the date of his appointment to the date of the Company's 2024 annual meeting of shareholders. The retainer is paid $88,777 in the form of cash and $131,236 in the form of restricted stock units. The restricted stock units vest on the earlier of May 12, 2024 (the anniversary date of the 2023 annual shareholders meeting) or the day immediately preceding the 2024 annual shareholders meeting and are subject to the other terms and conditions set forth in the form of Weyerhaeuser Company 2022 Long-Term Incentive Plan Director Restricted Stock Unit Award Grant Notice and Terms and Conditions, which are filed as an exhibit to this Current Report and are incorporated herein by reference.

There are no transactions between Mr. O’Rourke and the Company that would be reportable under Item 404(a) of Regulation S-K.

Section 9 - Financial Statements and Exhibits

Item 9.01. Financial Statements and Exhibits

(d) Exhibits. The following items are filed as exhibits to this report.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: August 3, 2023