ADX Energy Ltd.: Prospect Inventory Update

ADX updates its Upper Austria Exploration Prospect Inventory

Map showing prospects - August 2025; ADX Energy Ltd.

Wien (pta014/27.08.2025/11:10 UTC+2)

"The Upper Austria Portfolio provides multiple growth options for quick to commercialise Shallow Gas prospects and Anshof Near Field oil prospects as well as longer term multiple High Impact prospects"

Key points:

• Resources Update: ADX continues to renew and develop its prospect inventory. ADX has 24 drillable prospects across the ADX-AT-I and ADX-AT-II permit areas with a total aggregated mean prospective resource estimate of 374 BCF (Pmean, Net) of gas and 31 MMBBL (Pmean, Net) of oil. Refer to Upper Austria Prospect Inventory in Table 1 and the Upper Austria Prospects Map in Figure 1 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) relate 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.
• Prospect Inventory Update: The main changes to the prospect inventory since the last update in June 2023 include the addition of eight prospects and the removal of four prospects. A reconciliation of prospect volumes between June 2023 and August 2025 is shown Table 2 in the PDF file: Upper Austria Prospect Inventory Reconciliation.
• Prospect Play Types: The prospects are categorised under five proven play types in the basin including the Shallow Gas Play, Near Field Oil Play (Anshof), Welchau Carbonate Play, Sub-Flysch Play and the Molasse Play.
  • The Shallow Gas Play encompassing low cost, low risk, drill ready shallow gas prospects where the first GOLD-1 well is planned to be drilled in Q1 2026.
  • The Near Field Oil Play (Anshof) provides the potential for accelerated, high value oil production which can be processed at the Anshof oil field's 3,000 BPD production facility.
  • The Welchau Carbonate Play incorporating the results of technical studies including the historic Molln-1 gas discovery and the Welchau-1 well has resulted in the maturation of the slightly deeper Welchau Deep gas prosect and Rossberg oil prospect which have mean prospective resource estimates of 125.4 BCF (Pmean, Gross) and 19.6 MMBBL (Pmean, Gross) respectively.
  • The Sub-Flysch Play includes a number of deeper, high impact prospects below an under explored over thrust belt which are expected to be derisked by ongoing 3D Seismic reprocessing. Four gas condensate prosects in the play contribute a mean prospective resource estimate of 252 BCF (Pmean, Gross) to the portfolio.
  • The Molasse Play includes the new highly prospective BUCH gas prospect in ADX-AT-I.
    
    

ADX Chief Executive, Mr Paul Fink, said:"The Prospect Inventory update reflects data obtained from drilling activities and our prospect maturation program utilising the extensive 3D seismic and data base available to ADX.

"In the near term, ADX exploration activities will focus on the potentially extensive, low risk Shallow Gas Play as well as the Near Field Oil Play adjacent to the Anshof oil field and its 3,000 barrel per day processing facility. These play types which are low risk and proximal to infrastructure provide excellent opportunities to increase the Company's cash flow base in the near term. ADX is currently permitting three shallow gas targets and an Anshof near field oil target which will be drillable within the next six months.

"In the longer term, follow up high impact targets in the deeper Sub-Flysch Play, which is expected to benefit from the current 3D seismic processing program, and follow up Welchau Carbonate Play targets such as Welchau Deep, provide high reward opportunities in areas that are relatively under explored. These targets which are material and held at high equity interest also provide future farmout opportunities.

"Our portfolio development activities are ongoing supported by an extensive data base and a local geotechnical team with excellent regional knowledge. We expect to be able to announce further additions to the Upper Austrian portfolio by year end."

For further details 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