Mr. David Galison reports

STELLA-JONES' FIRST QUARTER 2026 RESULTS CONFERENCE CALL AND ANNUAL MEETING OF SHAREHOLDERS

Stella-Jones Inc. will hold a conference call to discuss its first quarter results.

Open to:  investors, analysts and all interested parties

Date:  Wednesday, May 6, 2026

Time:  8 a.m. Eastern Time (ET)

Call:  local -- Toronto: 1-416-855-9085; toll-free -- North America: 1-800-990-2777; conference ID: 85640

The press release will be published before market opens the day of the conference call through Globe Newswire.

Please log on or dial in 15 minutes before the conference begins.

If you are unable to attend at this time, you may access a Web recording of the meeting. This recording will be available on Wednesday, May 6, 2026, as of 1 p.m. ET until 11:59 p.m. ET on Wednesday, May 13, 2026. Media wishing to quote an analyst should contact the analyst personally for permission.

The annual meeting of shareholders of Stella-Jones will be held as a hybrid meeting:

On Wednesday, May 6, 2026, at 11 a.m. ET

In person at:  1250 Rene-Levesque Blvd. West, suite 3610, Montreal, Que.

Password:  stella2026 (case sensitive)

Management will be available to speak with the media immediately following the meeting.

Registered shareholders and duly appointed proxyholders, including non-registered shareholders who have duly appointed themselves as proxyholder, will be able to participate at the meeting, in person or virtually, ask questions and vote, provided they comply with all of the requirements set out in the company's management proxy circular dated March 12, 2026, available on the company's website. Non-registered shareholders who have not duly appointed themselves as proxyholder will be able to attend the meeting, in person or virtually, as guests, but in both cases, guests will not be able to vote nor ask questions at the meeting.

Stella-Jones' 2025 annual report is now available on the company's website.

About Stella-Jones Inc.

Stella-Jones is a leading North American manufacturer of products focused on supporting infrastructure essential to the electrical distribution and transmission network, and the operation and maintenance of railway transportation systems. It supplies the continent's major electrical utilities companies with treated wood poles and cross-arms, steel lattice towers and steel transmission poles, as well as North America's Class 1, short line and commercial railroad operators with treated wood railway ties and timbers. It also supports infrastructure with industrial products, namely timbers for railway bridges, crossings and construction, marine and foundation pilings, and coal tar-based products. Additionally, the company manufactures and distributes premium treated residential lumber and accessories to Canadian and American retailers for outdoor applications, with a significant portion of the business devoted to servicing Canadian customers through its national manufacturing and distribution network.