UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549


FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of April 2025

Commission File ~~No.~~ Number: 001-39974

WEST FRASER TIMBER CO. LTD.

(~~Translation~~Exact name of ~~registrant’s~~Registrant, ~~name~~as ~~into~~specified ~~English)~~in its charter)

1500 - 885 West Georgia Street~~, Suite 1500~~

Vancouver, British Columbia

Canada, V6C 3E8

~~(Address of~~Tel: ~~principal executive office~~(604) 895-2700

~~Indicate~~(Address byand ~~check~~Telephone ~~mark~~Number ~~whether the registrant files or will file annual reports under cover~~ of ~~Form~~Registrant's ~~20-F~~Principal orExecutive ~~Form 40-F~~ Offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☐ Form 40-F ☒

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1) ☐: ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7) ☐: ☐

~~SUBMITTED~~The ~~HEREWITH~~information contained in Exhibits 99.1 and 99.2 of this Form 6-K is incorporated by reference into the Registrant’s registration statements on Form S-8: File Nos. 333-257254 and 333-252631.

~~Exhibits~~EXHIBIT ~~99.1 News release dated April 3, 2025 re: Notice of First Quarter Results Conference Call~~INDEX

SIGNATURE


Exhibit			Description
99.1			Unaudited Condensed Consolidated Financial Statements for the three months ended March 28, 2025 and March 29, 2024
99.2			Management's Discussion and Analysis for the three months ended March 28, 2025
99.3			CEO - Certification of Interim Filings
99.4			CFO - Certification of Interim Filings
99.5			News release dated April 22, 2025 re: West Fraser Announces First Quarter 2025 Results

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, thereunto duly authorized.

~~Dated~~Date: April 3 22, 2025 WEST FRASER TIMBER CO. LTD. /s/ Christopher A. Virostek Christopher A. VirostekSenior Vice-President, Finance and Chief Financial Officer

WEST FRASER TIMBER CO. LTD. /s/ Christopher A. Virostek Christopher A. Virostek Senior Vice-President, Finance and Chief Financial Officer

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