Attachment C Notification and Public Disclosure Model of Transactions Carried Out by Persons Discharging Managerial Responsibilities, and Persons Closely Associated with Them 1 Relevant Person Data a) Name Antonio Maria Zinno 2 Notification Reason a) Position/qualification Chief Executive Officer Relevant Person b) Initial notification/Amendment Initial notification 3 Issuer Data a) Name Mare Engineering Group S.p.A. b) LEI 815600DD12C02189EA28 4 Transaction Data: section to be repeated for i) each class of instrument; ii) each type of transaction; iii) each date; and iv) each venue where the transactions occurred a) Description of the financial instrument, type of instrument Identification code Ordinary Share Options linked to the "Mare Group Stock Option Plan 2025-2027" IT0005588626 b) Nature of the transaction Acceptance and simultaneous free grant of Stock Options c) Price(s) and volume(s) Price €0.00 (Free grant) and Volume 261,600 d) Aggregated information - aggregated volume - price 261,600 €0.00 e) Date of the transaction 08/07/2026 f) Venue of the transaction Outside a regulated market (Over-The-Counter / Internal company agreement)