# EDGAR Filing Document

**Accession Number:** 0001402388
**File Stem:** 0001193125-26-255908
**Filing Date:** 2026-6
**Character Count:** 11371
**Document Hash:** 325431f5578cf5fc2bd290f4b34478da
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-255908.hdr.sgml**: 20260604

**ACCESSION NUMBER**: 0001193125-26-255908

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 4

**CONFORMED PERIOD OF REPORT**: 20260603

**FILED AS OF DATE**: 20260604

**DATE AS OF CHANGE**: 20260603

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** WEST FRASER TIMBER CO., LTD
- **CENTRAL INDEX KEY:** 0001402388
- **STANDARD INDUSTRIAL CLASSIFICATION:** SAWMILLS, PLANNING MILLS, GENERAL [2421]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** A1
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39974
- **FILM NUMBER:** 261062479

**BUSINESS ADDRESS:**
- **STREET 1:** 885 WEST GEORGIA STREET, SUITE 1500
- **CITY:** VANCOUVER
- **STATE:** A1
- **ZIP:** V6C 3E8
- **BUSINESS PHONE:** 6048952700

**MAIL ADDRESS:**
- **STREET 1:** 885 WEST GEORGIA STREET, SUITE 1500
- **CITY:** VANCOUVER
- **STATE:** A1
- **ZIP:** V6C 3E8

**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 June 2026** 

**Commission File Number: 001-39974**![LOGO](g76615g0604020709850.jpg)

## WEST FRASER TIMBER CO. LTD.
**(Exact name of Registrant, as specified in its charter)** 

**1500 - 885 West Georgia Street** 

**Vancouver, British Columbia** 

**Canada, V6C 3E8** 

**Tel: (604) 895-2700** 

**(Address and Telephone Number of Registrant's Principal Executive 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 ☒

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**EXHIBIT INDEX** 

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| | |
|:---|:---|
| **Exhibit** | **Description** |
| 99.1 | [News release dated June 3, 2026 re: West Fraser Releases 2025 Sustainability Report.](d76615dex991.htm) |

---

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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, thereunto duly authorized.

Date: June 3, 2026

---

| |
|:---|
| **WEST FRASER TIMBER CO. LTD.** |
| */S/ Chistopher A. Virostek* |
| Christopher A. Virostek |
| Executive Vice-President and Chief Financial Officer |

---

## Exhibit 99.1

**Exhibit 99.1**![LOGO](g76615dsp001.jpg)

**For Immediate Release** 

**West Fraser Releases 2025 Sustainability Report** 

**VANCOUVER, B.C.**, June 3, 2026 – Today, West Fraser Timber Co. Ltd. ("West Fraser" or the "Company") (TSX and NYSE: WFG) released its 2025 Sustainability Report. The report highlights the Company's sustainability performance across a variety of environmental, social and governance goals and disclosed targets.

"Our 2025 Sustainability Report, *Building Foundations for the Future*, reflects our commitment to transparency and responsible operations, highlighting the progress we are making while identifying priority areas for further action to enhance our ability to succeed in a rapidly changing world," said Sean McLaren, President and CEO. "As we look ahead, we will continue embedding sustainability into every part of our company — improving performance, reducing risk and creating value for everyone who depends on West Fraser."

**2025 key achievements highlighted in the report include:** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Telling the Complete Carbon Story:** We continued advancing our understanding of the full climate impact of
our forests and products, and in 2025 added a new dimension: the potential avoided emissions when our wood products are used in place of more carbon-intensive materials like steel and concrete. We also generated $13.3 million in carbon credit
sales from our regulatory compliance operations in carbon markets, demonstrating how climate action can align with financial performance.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Delivering on Our Climate Targets and Decarbonizing Operations:** We continued delivering against our
Science Based Target initiative (SBTi)-validated emissions reduction targets, achieving a 25% reduction in absolute Scope 1 and 2 emissions (from our 2019 baseline) and a 20% reduction in Scope 3 emissions (from our 2020 baseline) by the end of
2025, keeping us on track toward our 2030 goals. Additionally, 78% of our global energy use came from biogenic and renewable sources.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Highlighting Biodiversity:** We published our first Taskforce on Nature-related Financial Disclosures (TNFD)
report focusing on our Alberta operations, working in partnership with the National Council for Air and Stream Improvements (NCASI) and with funding from the Forest Resource Improvement Association of Alberta (FRIAA). In 2025, West Fraser released
its Biodiversity Policy and the Biodiversity Community of Excellence began providing governance and strategic direction across its five pillars of biodiversity stewardship.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Partnering with Indigenous Nations:** A key milestone in 2025 was the finalization of a long-term fibre
supply agreement with Lake Babine Nation Forestry for our Smithers, B.C. lumber mill, establishing a new model for collaborative forest stewardship in the province.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Supporting Our People and Earning Recognition as a Top Employer**: West Fraser was named one of
Canada's Top 100 Employers for the thirteenth consecutive year and earned Mental Health America's Bell Seal for Workplace Mental Health certification, recognizing our commitment to employee wellbeing.

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For more information on sustainability at West Fraser and to read the 2025 sustainability report, please visit <u>https://www.westfraser.com/sustainability/sustainability-reporting</u>.

**About West Fraser** 

West Fraser is a diversified wood products company with more than 50 facilities in Canada, the United States, the United Kingdom, and Europe, which promotes sustainable forest practices in its operations. The Company produces lumber, engineered wood products (OSB, LVL, MDF, plywood, and particleboard), northern bleached softwood kraft pulp, paper, wood chips, and other residuals. West Fraser's products are used in home construction, repair and remodelling, industrial applications, papers and tissue. For more information about West Fraser, visit <u>www.westfraser.com</u>.

**Forward-Looking Statements** 

This news release contains statements and information that constitute "forward-looking information" or "forward-looking statements" (collectively, "forward -looking statements") within the meaning of applicable Canadian and United States securities laws. Forward-looking statements include statements that are forward-looking or predictive in nature and are dependent upon or refer to future events or conditions. We use words such as "expects", "anticipates", "plans", "believes", "estimates", "seeks", "intends", "targets", "projects", or negative versions thereof and other similar expressions, or future or conditional verbs such as "may", "will", "should", "would", and "could", to identify these forward-looking statements. These forward-looking statements include, among other things, our potential to avoid emissions through the use of wood products, our goal to achieve our scope 1, 2 and 3 GHG reduction targets by 2030, validated by SBTi and our plans, pathways and estimated progress to achieve such reduction targets and our ability to embed sustainability into every part of our company and the achievement of benefits and outcomes flowing therefrom. Any such forward-looking statements are based on information currently available to us and are based on assumptions and analyses made by us considering our experience and our perception of historical trends and current conditions and are subject to inherent risks and uncertainties including the expectations and assumptions concerning the implementation, performance and effectiveness of technology needed to achieve our sustainability goals and priorities, including our SBTi target, our access to sufficient capital and resources to undertake such projects and plans, the laws and regulations which will apply to our business, our ability to attract and retain skilled employees to implement our goals, targets and plans, environmental compliance costs generally, and assumptions regarding the development of our business generally, uncertainties, risks and assumptions concerning our quantification of GHG and biogenic carbon quantification and the methodologies and data on which they rely, risks associated with climate change and the environment, risks associated with permitting and the timeline to achieve such permitting to meet our operational goals, operational problems, changes in laws and governmental regulations, including the evolution of forest policy and stewardship, environmental compliance challenges, costs of compliance with environmental and other laws and regulation, risks relating to the development and use of new technology or lack of appropriate technologies needed to advance our goals, including the ability to implement our operational excellence and modernization strategies, our scope 2 strategy focused on increasing energy efficiency, reducing consumption and decarbonizing grid power, competition for labour and services and related shortages, natural disasters and adverse weather conditions, uncertainties, risks and assumptions concerning our TNFD report and the methodologies and data on which it relies, general business and economic conditions and the future operation and financial performance of the Company generally. Readers should also refer to the risk factors set forth in the Company's annual information form and management's discussion and analysis for the year ended December 31, 2025, each dated February 11, 2026, as updated in our quarterly reports from time to time and other documents, available at SEDAR+ (<u>www.sedarplus.ca</u>) and EDGAR (<u>www.sec.gov/edgar</u>). There can be no assurance that the plans, intentions, or expectations upon which forward-looking statements are based will be realized. Actual results may differ, and the difference may be material and adverse to the Company and its shareholders. Except as may be required by law, the Company undertakes no obligation to publicly update or revise any forward-looking statements. There can be no assurance that the plans, intentions, or expectations upon which forward-looking statements are based will be realized. Actual results may differ, and the difference may be material and adverse to the Company and its shareholders. Except as may be required by law, the Company undertakes no obligation to publicly update or revise any forward-looking statements.

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**For More Information** 

**Media Contact** 

Joyce Wagenaar

Director, Communications

Tel. (604) 817-5539

<u>media@westfraser.com</u> 

**Investor Contact** 

Anil Aggarwala

Director, Treasurer and Investor Relations

Tel. (604) 245-9718

<u>shareholder@westfraser.com</u> 

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