Johnson Matthey Regulatory News (JMAT)

28th May 2026

Johnson Matthey Plc

(the Company)

Appointment of Julie Southern as a Non-Executive Director and Senior Independent Director and other Board changes

As noted in the Company's results announcement released this morning, Barbara Jeremiah, the Company's Senior Independent Director (SID), and John O'Higgins, chair of the Remuneration Committee, will each retire from the Board with effect from the conclusion of the forthcoming Annual General Meeting (AGM) to be held on 16th July 2026.

As part of the Board's succession planning, and following a comprehensive search and selection process, the appointment of Julie Southern as a NED and the Company's SID was approved by the Board on 27th May 2026. Julie's appointment will be effective from the conclusion of the AGM on 16th July 2026. Upon joining the Board, Julie will also become a member of the Audit Committee and Nomination Committee.

Effective from the conclusion of the AGM on 16th July 2026, Sinead Lynch will become chair of the Remuneration Committee.

Julie is a Chartered Accountant and has significant FTSE Board and C-Suite experience including in finance, strategy, business development and governance.

Julie is currently Chair of NASDAQ listed NXP Semiconductors NV and is Chair of the Remuneration Committee, and also sits on each of the Audit Committee and People Committee, of FTSE 250 Ocado Group plc. She has previously served as Chair of RWS Holding Plc and was Senior Independent Director and Audit Committee Chair of FTSE 100 airline EasyJet Plc.

Andrew Cosslett, Chair of Johnson Matthey said: "On behalf of Johnson Matthey and the whole Board, I would like to thank Barbara and John for their valuable contributions to the Board as non-executive directors and as Senior Independent Director and chair of the Remuneration Committee, respectively. I would also like to welcome Julie to Johnson Matthey. I am delighted that she will be joining the Board and look forward to working with her and the Board benefiting from her expertise and experience."

In accordance with obligations under UKLR 6.4.8R, Julie currently holds, or has held, the following directorships:

There are no other matters that require disclosure under 6.4.8R of the UK Listing Rules.

 ENDS

Johnson Matthey Plc is listed on the London Stock Exchange (JMAT)

Registered in England & Wales number: 00033774Legal Entity Identifier number: 2138001AVBSD1HSC6Z10