11 June 2025

Press Release

Weir awarded £40m sustainable tailings solution contracts for one of the world's largest tailings storage facilities in Talabre, Chile

Order including GEHO^â positive displacement pumps, WARMAN^â centrifugal pumps, and ancillary equipment to be booked in Q2

Weir has been selected by Codelco, the world's largest copper producer, to supply the tailings transport solution for the Talabre tailings dam expansion project in the Atacama region of Chile. The brownfield expansion project will combine the thickened tailings streams from three major mines in the area: Ministro Hales, Chuquicamata, and Radomiro Tomic. The expansion is expected to have a total productive life of 20 years, and handle a slurry thickened to ca. 70% solid content - creating the opportunity to reuse process water and increasing the safety and stability of the storage facility.

The Weir solution includes a combination of GEHO^â positive displacement pumps and WARMAN^â centrifugal pumps to handle the large volume and high solid content of tailings from the three mines. With the full process enabled with NEXT intelligent digital solutions, the combined equipment will transport over 10 thousand dry tons per hour using less energy than other available solutions.

The initial £40m contract awards will be booked in Q2 2025. In total, the contracts represent the single largest order for Weir's GEHO^â pumps, underlining the benefits of this technology for large scale, energy-efficient tailings transportation. We expect revenue to be recognised over the course of Q4 2025 and early 2026 in line with project cut-off dates.  After commissioning of the equipment, aftermarket support will be provided locally via Weir's strong service centre presence in the region.

The receipt of orders associated with the contract award do not result in a change to Weir's full year 2025 financial guidance as of 24 April 2025.

Commenting on the contract awards, Jon Stanton, Chief Executive Officer said:

"We are delighted to have secured these significant contracts for our tailings management solutions, which include both our market leading GEHO^â and WARMAN^â ranges that provide energy-efficient tailings transportation at scale. Our engineers have developed a differentiated solution, particularly addressing Codelco's stringent sustainability goals for operating in the water-scarce climate and geology of the Atacama region. Our proven experience on large scale tailings operations as well as local presence mean Codelco can come to expect the world class service Weir is known for."

Disclaimer

This information includes 'forward-looking statements'. All statements other than statements of historical fact included in this release, including, without limitation, those regarding The Weir Group PLC's (the "Group") financial position, business strategy, plans (including development plans and objectives relating to the Group's products and services) and objectives of management for future operations, are forward-looking statements. These statements contain the words "anticipate", "believe", "intend", "estimate", "expect" and words of similar meaning. Such forward-looking statements involve known and unknown risks, uncertainties and other important factors that could cause the actual results, performance or achievements of the Group to be materially different from future results, performance or achievements expressed or implied by such forward-looking statements. Such forward-looking statements are based on numerous assumptions regarding the Group's present and future business strategies and the environment in which the Group will operate in the future. These forward-looking statements speak only as at the date of this document. The Group expressly disclaims any obligation or undertaking to disseminate any updates or revisions to any forward-looking statements contained herein to reflect any change in the Group's expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based. Past business and financial performance cannot be relied on as an indication of future performance.

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).