ADX Energy Ltd.: HOCH-1 Well Encounters Gas in Hall Formation

3D seismic Hall gas reservoirs intersected in the HOCH-1 well; ADX Energy Ltd.

Wien (pta013/07.05.2026/09:34 UTC+2)

"Drilling cuttings and High Gas Concentrations Encountered while Drilling Indicate the Presence of Gas Filled Reservoirs"

"The Gas Reservoir Intersection is consistent with Predrill 3D Seismic Predictions Providing Further Confidence in the Potential of ADX' Shallow Gas Play"

Key points:

• The Hochfeld-1 ("HOCH-1") shallow gas exploration well commenced drilling on 16th of April 2026 at 9.00 pm CET in the ADX-AT-I exploration licence in Upper Austria. HOCH-1 is the first of three (3) shallow gas prospects to be drilled in Upper Austria. Two (2) additional gas prospects are permitted for drilling in 2026."
• Operations at 6.00 am CET on the 6th of May 2026 were drilling ahead in 6 1/8 inch hole at a measured depth ("MD") of 1367 metres.
• The first intersection of gas filled sands was encountered at approximately 1350 metres TD. Due to additional gas shows encountered while drilling deeper the well is expected to be deepened to a revised total depth of at least 1550 metres.
• The interpretation of biogenic (100% methane) gas filled Hall formation reservoirs is based on drill cuttings, mud-logs, compositional gas analysis and high total gas concentrations. Hall formation reservoirs encountered in the well correlate almost exactly with the pre-drill 3D seismic prediction (refer to Figure 5 in the attached Appendix, as well as Figure A below)
• A wireline logging program is planned for the 7th of May to confirm reservoir quality, net reservoir thickness and gas saturation. A quick look logging analysis will be undertaken shortly thereafter. If the results of wireline logging confirm the drilling results to date, the well will be cased and completed in preparation for testing.
• The HOCH-1 well was targeting highly productive shallow gas reservoirs within Miocene aged sandstones of the Hall formation. Similar Hall formation wells have recorded initial production rates of up to 9 mmscf/d (approx. 1,500 barrels per day oil equivalent).
• The HOCH prospect has a Mean Prospective Resource* potential of 8.0 BCF and a High Case Prospective Resource of 17.3 BCF (refer to Prospective Resources Estimate, Figure 4 in the attached Appendix and ASX release dated 30 January 2026).

* 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 a 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.

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 Frankfurt, Hamburg, Munich, Stuttgart, Tradegate BSX
Other Stock Exchanges:	Australian Securities Exchange (ASX), Sydney