Syensqo is a Belgian multinational materials company, established in 2023 through the spin-off from Solvay. The current CEO is Ilham Kadri, who previously was the CEO of Solvay. Syensqo is publicly listed and joined the BEL 20 stock index soon after listing.^[1] Syensqo researches and produces advanced materials for use in industry and consumer applications.

In 2022, Solvay announced the intention to separate into two independent stock listed companies. Solvay would retain its historic soda ash, Peroxides, Silica, and Coatis production, as well as the Specialty Chemicals division. The Materials, Composites, and Solutions divisions were split off into Syensqo.^[2] The goal of separating the two companies was to give independence and flexibility in pursuing different strategies.

The split became effective on December 11th, 2023, with shares listed on Euronext Brussels and Euronext Paris.^[3]