Mr. Amar Doman reports

DOMAN BUILDING MATERIALS GROUP LTD. ANNOUNCES RETIREMENT OF JAMES CODE AND APPOINTMENT OF NEW CHIEF FINANCIAL OFFICER

Doman Building Materials Group Ltd. chief financial officer James Code will be retiring effective April 7, 2026. Following a planned succession process, the company has appointed Darren Gwozd as CFO, effective the same day.

Mr. Code joined Doman in 2009 and has served as CFO of Doman since 2011, and has played a key role in the company's growth, transformation and financial stewardship during his tenure. Under his leadership, Doman strengthened its financial reporting and controls, executed on multiple strategic acquisitions, completed significant capital raises and complex credit facilities, and navigated varying market and operating cycles. Mr. Code commented: "It has been a privilege to serve as chief financial officer of Doman. While I am proud of our corporate milestones, I am most grateful for the dedicated professionals within our finance team and to work alongside such a talented management team and board. I am proud of what we have accomplished together over the years and confident in the company's continued success. I look forward to supporting a smooth transition and seeing the team continue to thrive and drive Doman toward even greater success."

Mr. Gwozd joins Doman from Western Forest Products Inc., where he served as vice-president, finance, leading core finance functions, including financial reporting, planning and analysis, treasury, tax, and internal audit, and supporting the board of directors and audit committee. Previously, he served as CFO of Great Canadian Gaming Corp., initially a Toronto Stock Exchange-listed public issuer and later supported the company through a private equity sponsored take private transaction. In that role, he led the financial operations of a complex, multijurisdictional high-revenue enterprise through a period of significant growth and transition, with experience spanning public company reporting, capital markets and large-scale financings.

"On behalf of the board of directors and the entire Doman organization, I would like to thank James for his many years of dedicated service and leadership," said Amar S. Doman. "James has been an exceptional financial leader and trusted partner, and we are grateful for the lasting contributions he has made to the Company. We wish James and his family a successful retirement." Mr. Doman continued, "We are also delighted to have Darren joining the company and welcome him and his extensive skill set to Doman."

Following his retirement, Mr. Code will continue to support the company as a special adviser, providing transition support and advisory assistance to management as requested. This arrangement is intended to ensure continuity and a seamless transition as Mr. Gwozd assumes the role of CFO.

About Doman Building Materials Group Ltd.

Founded in 1989, Doman is headquartered in Vancouver, B.C., and trades on the Toronto Stock Exchange under the symbol DBM.

As Canada's premier national distributor in the building materials and related products sector, Doman operates several distinct divisions with multiple treating plants, planing and specialty facilities, and distribution centres coast-to-coast in all major cities across Canada and coast-to-coast across the United States.

Strategically located across Canada, Doman Building Materials Canada operates distribution centres coast-to-coast and Doman Treated Wood Canada operates multiple treating plants near major cities. In the United States: headquartered in Dallas, Tex., Doman Lumber operates 21 treating plants, two specialty planing mills and five specialty sawmills located in nine states, distributing, producing and treating lumber, fencing and building material servicing the central U.S.; Doman Tucker Lumber operates three treating plants, specialty sawmilling operations and a captive trucking fleet serving the U.S. East Coast; Doman Building Materials USA and Doman Treated Wood USA serve the U.S. West Coast with multiple locations in California and Oregon; and in the state of Hawaii, the Honsador Building Products Group services 15 locations across all the islands.

We seek Safe Harbor.