FOR IMMEDIATE RELEASE                                                                                     4 MARCH 2026

CHEMRING GROUP PLC ("Chemring", the "Group" or the "Company")

DIRECTORATE CHANGE

APPOINTMENT OF NON-EXECUTIVE DIRECTOR

Chemring today announces the appointment of Baroness Kate Rock as an independent non-executive director. Upon joining the Board, Kate will become the Senior Independent Director and a member of the Audit, Nomination and Remuneration Committees. She will join the Board with effect from 1 April 2026.

Kate is an experienced non‑executive director with a board portfolio covering technology, engineering, construction and infrastructure. Underpinned by a strong background in corporate communications and strategy, she combines deep engineering sector knowledge with a strategic understanding of how innovation and technology enhance productivity, together with wide-ranging experience working across government.

On 1 December 2022 Kate was appointed Non-Executive Chair of the UK infrastructure solutions company Costain Group PLC. Since that time Costain has seen a near five-fold increase in its share price and has re-entered the FTSE 250 index. In September 2018 she joined the Board of FTSE 250 Keller Group plc (the world's largest geotechnical specialist contractor) and is now the Senior Independent Director, serving on the Audit & Risk, Nomination & Governance, Remuneration and Sustainability Committees.

Having been appointed a Life Peer in 2015, she sat on the House of Lords Science and Technology Select Committee until January 2023. She was also a member of the House of Lords Select Committee on Artificial Intelligence from 2017 to 2018 and was Chair of the House of Lords Select Committee on Autism between January and November 2025.

Until January 2023, Kate was a Board member of the world's first Centre for Data Ethics and Innovation and was, until November 2017, a non-executive director of Imagination Technologies plc, the former global FTSE 250 high technology company.

Tony Wood, Chairman of Chemring, commented:

"Following an extensive selection process, I am delighted to welcome Baroness Rock to Chemring. Kate brings considerable experience within the fields of technology, infrastructure and innovation, as well as government and strategic communications. Her strong understanding of the construction and infrastructure sector will also be of value to the Group as we further progress our organic growth strategy and investment in increased capacity. I am certain that she will make a strong contribution to the continued development and performance of the Group."

There are no further disclosures required to be made in accordance with UKLR 6.4.8 of the FCA's UK Listing Rules sourcebook.

-ENDS-

For further information:

Rupert Pittman           Group Director of Corporate Affairs,                   01794 463401

                                       Chemring Group PLC             

James McFarlane        MHP Group                                                             07584 142665

Ollie Hoare                                                                                                     07817 458804

Notes to editors

·   Chemring is a FTSE-250 global business that specialises in the manufacture of high technology products and the provision of services to the defence, security and aerospace markets

·   Employing approximately 2,700 people worldwide, and with production facilities in four countries, Chemring meets the needs of customers in more than fifty countries

·   Chemring is organised under two strategic product segments: Sensors & Information and Countermeasures & Energetics

·   Chemring has a diverse portfolio of products that deliver high reliability solutions to protect people, platforms, missions and information against constantly changing threats

·   Operating in niche markets and with strong investment in research and development ("R&D"), Chemring has the agility to rapidly react to urgent customer needs

www.chemring.com