Clariant rejects LyondellBasell’s allegations against four companies related to the 2020 competition law infringement

AD HOC ANNOUNCEMENT PURSUANT TO ART. 53 LR

Muttenz, 18 July 2025 – Clariant, a sustainability-focused specialty chemical company, today announced that on 16 July 2025, the company received a claim for damages against four companies, including Clariant, from LyondellBasell with the court of Amsterdam, The Netherlands. The claim alleges damages totaling to around EUR 1.6 billion in relation to infringement of competition law on the ethylene purchasing market which was sanctioned by the European Commission in July 2020. Clariant firmly rejects the allegation and will adamantly defend its position in the proceedings. Clariant has substantiated economic evidence that the conduct of the parties did not produce any effect on the market.