Mr. Antoine Calendrier reports

ATKINSREALIS APPOINTED TO SUPPORT EDF AND SIZEWELL C ACROSS UK NUCLEAR PORTFOLIO

Atkinsrealis Group Inc. has been appointed by EDF (Electricite de France) and Sizewell C Ltd. to a broad professional services framework. The appointment extends the multidisciplinary work Atkinsrealis delivers across EDF's existing fleet of nuclear power plants and its new build Hinkley Point C program for an initial five-year term, with the option to extend by a further five years. It also encompasses engineering services delivered at Sizewell C nuclear new build program.

The framework ensures Atkinsrealis will continue to support EDF as a trusted delivery partner during a vital transition period as some of its existing plants enter vital life extension programs, others shift toward the end of operational life and as Hinkley Point C prepares for operations as the U.K.'s first large-scale reactor for a generation. The inclusion of Sizewell C will also help to realize the full benefits of replication as the Atkinsrealis team applies the knowledge and experience from Hinkley Point C to the new build program as it enters construction phase.

"EDF has been a major client to our nuclear business for over two decades, and this framework is a continuation of the vital work we have been delivering across operational and new build programs for EDF Energy and Sizewell C in the U.K.," said Ian L. Edwards, president and chief executive officer, Atkinsrealis. "Our proven ability to provide a breadth of capabilities strengthens our role as a strategic partner with EDF and reinforces our leading position as a truly end-to-end engineering services provider in the global nuclear industry."

Under the new professional services framework, Atkinsrealis will support EDF Nuclear Services, EDF Nuclear Operations, Hinkley Point C and Sizewell C across more than 60 different technical and project delivery disciplines, from design and engineering to program management and consultancy.

"There are over 3,000 experienced Atkinsrealis employees working across civil nuclear programs in the EMEA region, from structural and mechanical engineers to specialists in digital design, project delivery and decommissioning," said Joe St. Julian, president, nuclear, Atkinsrealis. "This new framework enables EDF and Sizewell C to seamlessly access our specialists for any of their U.K. programs, reinforcing our ability to act as a trusted delivery partner during this crucial period of their nuclear operations."

The latest appointment builds on Atkinsrealis's well-established partnership with EDF Energy, working across its operational and new build program in the U.K. for over 25 years, including both Hinkley Point C and Sizewell C in its U.K. EPR program. In 2025, Atkinsrealis and EDF also signed a strategic partnership agreement to collaborate on new nuclear reactor opportunities internationally.

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 our 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 deliver 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 advisory services. The breadth and depth of the company's capabilities are delivered to clients in strategic sectors such as engineering services and nuclear, as steward of Candu nuclear technology.

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