17 June 2025

Press Release

Change in external auditor

The Weir Group PLC ("Company") today announces that it has completed a formal and competitive tender process for its external auditor, overseen by its Audit Committee, which has carefully evaluated the offering of each participant.

This has resulted in a recommendation from the Audit Committee, which has now been endorsed by the Board, that a resolution be put to shareholders for approval at the 2026 Annual General Meeting ('AGM'), appointing EY LLP as external auditor of the Company and its subsidiaries for the year ending 31 December 2026.

PWC LLP, who have been the Company's external auditor since the year ended 31 December 2016, will continue in the role until that time, and will therefore undertake the audit for the year ending 31 December 2025.  PWC LLP will cease to hold office as the external auditor of the Company at the conclusion of the Company's 2026 AGM.

About The Weir Group PLC

Founded in 1871, The Weir Group PLC is one of the world's leading engineering businesses with a purpose to make its mining and infrastructure customers' operations more sustainable and efficient. Weir's highly engineered technology and digital solutions enable critical resources to be produced using less energy, water and waste while reducing customers' total cost of ownership. The Group is ideally positioned to benefit from structural trends that support long-term demand for its technology including the need for more essential metals to support economic development and carbon transition. The Group has c.12,000 employees operating in over 50 countries with a presence in every major mining region of the world. Find out more at www.global.weir.

Weir's ordinary shares trade on the London Stock Exchange (ticker: WEIR LN) and its American Depositary Receipts trade over-the-counter in the USA (ticker: WEGRY).