ADX Energy Ltd.: ADX Spuds HOCH-1 Shallow Gas Well in Upper Austria

MND Drilling & Services a.s. MD-150 rig at HOCH-1 drillihg location; ADX Energy

Wien (pta022/20.04.2026/13:30 UTC+2)

"HOCH-1 is the first of three shallow gas prospects permitted for drilling in 2026"

• The Hochfeld-1 ("HOCH-1") shallow gas exploration well commenced drilling on 16th of April 2026 at 9.00pm CET. Operations at 6.00 am CET on the 19th of April 2026 were drilling ahead in 8 ½ inch hole at a measured depth ("MD") of 96 metres. Future operations are drilling ahead to 430 metres, then running and cementing 7 inch casing (refer to Well Plan, Figure 5 in attached appendix).
• HOCH-1 will be drilled to a depth of approximately 1430 metres MD and will take approximately 14 days to drill and evaluate. The HOCH-1 well will target highly productive shallow gas reservoirs within Miocene ageds and stones of the Hall formation. Similar Hall formation wells have recorded initial production rates of up to 9 mmscf/d (approx. 1,500 bpd 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