Announcement PDF Appointment of Joint Company Secretary Canberra, 26 March 2023 Electro Optic Systems Holdings Limited (EOS or Company) is pleased to announce the appointment of Ms Melanie Andrews as joint Company Secretary of the Company effective today. Ms Andrews is currently Group Financial Controller and will retain this role. This announcement has been authorised for release to the ASX by the Board. Further information: Marguerite Wilson enquiry@eos-aus.com ABOUT ELECTRO OPTIC SYSTEMS (ASX: EOS) EOS operates in two divisions: Defence Systems and Space Systems Defence Systems specialises in technology for weapon systems optimisation and integration, as well as ISR (Intelligence, Surveillance and Reconnaissance) and C4 systems for land warfare. Its key products include next-generation remote weapon systems, vehicle turrets, high-energy laser weapons (directed energy), as well as fully integrated and modular counter-UAS and C4 systems. Space Systems includes all EOS space and communications businesses, and operates as two entities – Space Technologies and EM Solutions. Space Technologies specialises in applying EOS-developed optical sensors and effectors to detect, track and characterise objects in space. It includes capabilities in the domain of space control and space warfare. EM Solutions delivers world-leading RF and optical space communications technology. Its core product range centres around the development and production of high-end, broadband radio transceivers for satellite communications as well as satellite communications-on-the-move terminals for defence and government customers.