Mr. Ian Edwards reports

ATKINSREALIS TO HOLD ITS THIRD QUARTER EARNINGS WEBCAST AND CONFERENCE CALL ON NOVEMBER 13, 2025

Atkinsrealis Group Inc. will hold a webcast and conference call to discuss and present its third quarter financial results. The public is invited to listen to the webcast or the conference call on Thursday, Nov. 13, 2025, at 8 a.m. Eastern Time. Participants will be Ian L. Edwards, president and chief executive officer, and Jeff Bell, chief financial officer. Financial results will be released prior to the market open that day.

The live webcast of the conference call can be accessed on-line. To participate to the conference call, please preregister on-line. Registrants will receive a confirmation e-mail with dial-in details and a unique access code required to join the live call. The accompanying slide presentation will be posted on the company's website on the day of the call, along with the release of the financial results.

A recording of the webcast and a transcript of the conference call will be available on the company's website within 24 hours following the call.

About Atkinsrealis Group Inc.

Created by the integration of long-standing organizations dating back to 1911, Atkinsrealis is a world-class engineering services and nuclear company dedicated to engineering a better future for the planet and its people. The company creates sustainable solutions that connect people, data and technology to transform the world's infrastructure and energy systems. The company deploys global capabilities locally to its clients and delivers unique end-to-end services across the whole life cycle of an asset, including consulting, advisory and environmental services, intelligent networks and cybersecurity, design and engineering, procurement, project and construction management, operations and maintenance, decommissioning, and capital. The breadth and depth of Atkinsrealis's capabilities are delivered to clients in strategic sectors such as engineering services, nuclear and capital.