REGULATED INFORMATION
10 April 2026

Implementation of the share buyback program

Imerys (the “Company") announces the implementation of its share buyback program, as published by the Company and authorized by the Annual General Meeting. These repurchases will be carried out in accordance with applicable regulatory provisions.

In accordance with the Company's buyback program, the objective is to ensure the implementation and coverage of free share grant plans as well as all share allocations under employee share plans established by the Company (or similar plans) or as part of profit-sharing in its results, to employees, former employees, and/or corporate officers of the Company and/or companies linked to it pursuant to Articles L. 225-180, L. 225-197-2, and L. 233-16 of the French Commercial Code (Code de commerce), within the framework of legal schemes in force or ad hoc plans established by the Company.

The buybacks will cover the acquisition of a maximum of 400,000 shares, within a limit of 12,000,000 euros, which is a price limit lower than the maximum price authorized by the General Meeting, over a period ending no later than 27 Exchange Business Days, starting from April 10, 2026, subject to usual adjustments. The execution of the buybacks is entrusted to an investment services provider. These buybacks will be carried out through the implementation of forward transactions. Imerys plans to actually acquire the shares purchased forward in April 2027.

Imerys is the world’s leading supplier of mineral-based specialty solutions for the industry with €3.4 billion in revenue and 12,300 employees in 40 countries in 2025. The Group offers high value-added and functional solutions to a wide range of industries and fast-growing markets such as solutions for the energy transition and sustainable construction, as well as natural solutions for consumer goods. Imerys draws on its understanding of applications, technological knowledge, and expertise in material science to deliver solutions which contribute essential properties to customers’ products and their performance. As part of its commitment to responsible development, Imerys promotes environmentally friendly products and processes in addition to supporting its customers in their decarbonization efforts.

Imerys is listed on Euronext Paris (France) with the ticker symbol NK.PA.

Relations investisseurs:
Cyrille Arhanchiague : +33 (0)6 07 16 67 26
finance@imerys.com

Contacts presse:
Mathieu Gratiot : +33 (0)7 87 53 46 60
Hugues Schmitt (Primatice) : + 33 (0)6 71 99 74 58
Olivier Labesse (Primatice) : + 33 (0)6 79 11 49 71