Ms. Stephanie Corrente reports

STELLA-JONES' FIRST QUARTER 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 7, 2025

Time:  8 a.m. Eastern Daylight Time

Call:  1-800-206-4400

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

Please log on or dial in 15 minutes before the conference call 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-line on Wednesday, May 7, 2025, as of 1 p.m. until 11:59 p.m. on Wednesday, May 14, 2025.

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 7, 2025, at 11 a.m. Eastern Daylight Time, in person at 1250 Rene-Levesque Blvd. W, Suite 3610, Montreal, Que., or virtually by webcast (password: stella2025 (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 14, 2025 (available on Stella-Jones'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 or ask questions at the meeting.

Stella-Jones's 2024 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 that are essential to the delivery of electrical distribution and transmission and the operation and maintenance of railway transportation systems. It supplies the continent's major electrical utilities companies with treated wood utility poles and North America's Class 1, short-line and commercial railway 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.