Imerys

Notice of Dividend Amount • Feb 17, 2023

PRESS RELEASE

PARIS, FEBRUARY 17, 2023

Clarification on the dividend proposal

For the sake of clarity, Imerys precises that with regard to the dividend proposal of €3.85 per share for 2022 financial year, €1.50 per share corresponds to an ordinary dividend, and €2.35 per share correspond to the payment of a special dividend related to the disposal of the High Temperature Solutions (HTS) business area.

It is reminded that subject to the approval by the Shareholder's General Meeting of May 10, 2023 1 , the ex-dividend date will be on May 15, 2023 and the payment date will be on May 17, 2023. The dividend will be paid fully in cash.

The world's leading supplier of mineral-based specialty solutions for industry with €4.3 billion in revenue and 14,000 employees in 2022. Imerys delivers high value-added, functional solutions to a great number of sectors, from processing industries to consumer goods. The Group draws on its understanding of applications, technological knowledge and expertise in material science to deliver solutions by beneficiating its mineral resources, synthetic minerals and formulations. Imerys' solutions contribute essential properties to customers' products and their performance, including heat resistance, hardness, conductivity, opacity, durability, purity, lightness, filtration, absorption and water repellency. Imerys is determined to develop responsibly, in particular by fostering the emergence of environmentally-friendly products and processes.

More comprehensive information about Imerys may be obtained from its website (www.imerys.com) in the Regulated Information section, particularly in its Registration Document filed with the French financial markets authority (Autorité des marchés financiers, AMF) on March 22, 2022 under number D.22-0131 (also available from the AMF website, www.amf-france.org). Imerys draws investors' attention to chapter 2 "Risk Factors and Internal Control" of its Registration Document.

Disclaimer: This document contains projections and other forward-looking statements. Investors should be aware that such projections and forward-looking statements are subject to various risks and uncertainties (many of which are difficult to predict and generally beyond the control of Imerys) that could cause actual results and developments to differ materially from those expressed or implied.

Analyst/Investor Relations:

Vincent Gouley : +33 (0)1 49 55 64 69 finance@imerys.com

Press contacts:

Claire Garnier : +33 (0)1 49 55 64 27 Mathieu Gratiot : +33 (0)7 87 53 46 60 Hugues Schmitt (Primatice) : + 33(0) 6 71 99 74 58 Olivier Labesse (Primatice) : + 33 6(0) 79 11 49 71

¹ Distribution may be subject to one or two separate resolutions submitted to the general meeting of shareholders.