Zenith Energy Ltd. (“Zenith” or the “Company”) announced on Monday, September 22, 2025, that its fully owned UK subsidiaries have filed their final submissions in the ongoing arbitration against the Republic of Tunisia under the rules of the International Centre for Settlement of Investment Disputes (ICSID). In connection with the final submission, Zenith disclosed an upward revision of its total claimed damages, from the previously communicated USD 503M to USD 572.65M.