Motor Oil Hellas Corinth Refineries S A : FINANCIAL CALENDAR OF THE YEAR 2026

About this update from Motor Oil (hellas) Corinth Refineries S.a.

In the context of its obligations according to the Regulation of the ATHENS EXCHANGE, MOTOR OIL (HELLAS) S.A. hereby announces its Financial Calendar of the year 2026 which has as follows: Release date of the fiscal year 2025 Financial Results: Monday, March 23 rd , 2026, after the close of business. The Annual Financial Report of the fiscal year 2025 will be available on the Company website www.moh.gr (Investor Relations / Financial Information / Full Year Financial Reports) as well as on the ATHEX website www.athexgroup.gr after the close of business on Monday, March 23 rd , 2026. Annual briefing to analysts : will take place over a teleconference on Tuesday March 24 th , 2026, at 17:30 hrs local time (UK: 15:30, EASTERN US: 10:30). Annual Ordinary General Meeting : Wednesday June 17 th , 2026. Year 2025 ex-dividend date : Friday June 26 th , 2026 (that is, after June 19 th , 2026, which signifies the expiration date for the Futures Contracts on the Company´s stock and on the FTSE/ATHEX LARGE CAP index, in which it is included). Shareholders entitled to the year 2025 dividend: Company shareholders registered in the electronic files of the Dematerialized Securities System (S.A.T) dated Monday June 29 th , 2026 (record date). First day of payment of the year 2025 dividend: Friday July 3 rd , 2026. Release date of H1 2026 Financial Results: Wednesday August 26 th , 2026, after the close of business. The Half Year Financial Report will be available on the Company website www.moh.gr (Investor Relations / Financial Information / Half Year Financial Reports) as well as on the ATHEX website www.athexgroup.gr after the close of business on Wednesday August 26 th , 2026. A teleconference has been scheduled for Thursday August 27 th , 2026 at 17:30 hrs local time (UK: 15:30, EASTERN US: 10:30). Maroussi, March 5 th , 2026 The Board of Directors

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