15 March 2024

Elementis plc (the "Company") - Directorate changes

Elementis plc (ELM.L) (the "Company"), global specialty chemicals company, today announces the appointment of Heejae Chae as a Non-Executive Director with effect from 25 March 2024. Heejae will join the Audit, Nomination and Remuneration Committees.

Heejae is also a Non-Executive Director of IP Group plc, where he chairs the remuneration committee, and the Executive Chairman of Sys Group plc. He served as Chief Executive of Scapa Group plc, a global supplier of products for healthcare and industrial markets, for twelve years, until its sale in 2021. Prior to joining Scapa Group plc, he held roles as Group Chief Executive of Volex Group plc, and was the Group General Manager, Radio Frequency Worldwide, for Amphenol Corporation. Heejae spent the early part of his career in finance at The Blackstone Group and Donaldson Lufkin and Jenrette, before moving into industry.

Heejae holds a Bachelor of Arts in Economics and Bachelor of Science in Engineering from Columbia University, and an MBA from Harvard University.

John O'Higgins, Chair of Elementis, said:

"I am delighted to welcome Heejae to the Board. Heejae has had an outstanding career to date in both executive and non-executive roles and has demonstrated a track record of delivering significant value for shareholders. As such, he will have much to contribute at Elementis as we execute on our ambitious strategic goals."

The Company confirms that there are no other matters requiring disclosure pursuant to LR 9.6.13R (1) to (6) in respect of Heejae Chae's appointment.

Anna Lawrence

Group General Counsel & Company Secretary

020 7067 2999

LEI: 549300LQIH685LI2ML36