WEYERHAEUSER CO (WY) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-09 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: WEYERHAEUSER CO (WY) CIK: 0000106535 --- Reporting Owner --- Name: O'Rourke James Calvin CIK: 0001453221 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Date: 2026-05-09 | Code: F (Payment of exercise/tax) Shares: -106.34 | Price: $23.53 Total Value: $2,502.18 Shares Owned After: 28,620 | Ownership: D (Direct) Footnotes: [F1] These shares are being withheld to cover taxes for a restricted stock unit vesting. [F2] Reported holdings include shares acquired since the Reporting Person's last filing on Form 4 from dividend reinvestment transactions exempt from Section 16 of the Securities Exchange Act of 1934, as amended, and reflect a cash payment in lieu of fractional shares upon the restricted stock unit vesting. --- Footnotes (Complete Index) --- F1: These shares are being withheld to cover taxes for a restricted stock unit vesting. F2: Reported holdings include shares acquired since the Reporting Person's last filing on Form 4 from dividend reinvestment transactions exempt from Section 16 of the Securities Exchange Act of 1934, as amended, and reflect a cash payment in lieu of fractional shares upon the restricted stock unit vesting. --- Signature --- /s/ /s/ Jose J. Quintana, Attorney-in-fact for James Calvin O'Rourke (2026-05-12)