ADX Energy Ltd.: Sicily Channel Resources Update

A 31% increase in Prospective Resources Estimates

Location map C.R150.AU Permit; ADX Energy

Wien (pta009/02.12.2025/09:29 UTC+1)

"The revision incorporates new data available since the last reporting date in August 2022 from nearby gas fields as well as additional prospects / leads in the recently awarded extended permit area."

Key points:

• Resources Update: ADX has revised its prospect inventory for the recently awarded C.R 150.AU Permit in the Sicily Channel offshore Italy ("Permit") (refer ASX announcement 18 August 2025).
• Revised Gas Resources: The total aggregated mean prospective gas resource estimates for the Permit is 619 BCF (Pmean) for ADX 100% interest ("Updated Volumes").
• A comparison of the Permit's prospective resources by reporting date is summarised in the PDF file.
  Cautionary Statement: Prospective Resources are those estimated quantities of petroleum that may potentially be recovered by the application of a future development project(s) related to undiscovered accumulations. These estimates have both an associated risk of discovery and a risk of development. Further exploration appraisal and evaluation is required to determine the existence of a significant quantity of potentially recoverable hydrocarbons.
• Basis for Update: The Updated Volumes incorporate representative reservoir parameters from the nearby Lippone-Mazara onshore producing gas field, recovery factor assumptions from the recently developed Argo, Cassiopea and Gemini fields, shallow gas reservoirs encountered historic oil wells within the Permit and three new prospects / leads within expanded Permit Area not included in the August 2022 evaluation (refer to Figures 1 and 2). A Prospect Inventory Reconciliation is shown in Table 3.
• Further Volume Updates: An ENI data room visit in January 2026 and additional 2D seismic data purchases will allow ADX to further improve prospect assessments, assumptions regarding resource estimates as well as potentially identify and add further prospects / leads to the portfolio that ADX plans to incorporate into a third party Competent Persons Report.
  For more information please see the PDF file.

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Emitter:	ADX Energy Ltd. Ölzeltgasse 3/8 1030 Wien Austria
Contact Person:	Vesna Blazevic
Phone:	+43 676 6893465
E-Mail:	office@adx-energy.at
Website:	www.adx-energy.com
ISIN(s):	AU000000ADX9 (Share)
Stock Exchange(s):	Free Market in Berlin, Frankfurt, Hamburg, Munich, Stuttgart, Tradegate
Other Stock Exchanges:	Australian Securities Exchange (ASX), Sydney