ADX Energy Ltd.: HOCH-1 Production Testing Update

Gas flare from HOCH-1 test Zone 1 well testing clean up flow; ADX Energy Ltd.

Wien (pta013/18.06.2026/09:18 UTC+2)

"Positive result from first zone perforated – clean up flow of 2.8 million cubic feet per day (467 boepd equivalent) on a small 16/64" choke"

Key points:

• The Hochfeld-1 ("HOCH-1") shallow gas exploration well was drilled, cased and completed on the 15th of May 2026 in preparation for production testing 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 (refer to Figure 1 at the PDF file).
• The HOCH-1 well encountered up to eight (8) gas reservoirs within the Hall formation and the Base Hall formation interpreted from gas shows while drilling and logging results.
• Well testing is being undertaken in two (2) phases. The first phase focussed on the upper Hall formation and the second phase on the lower Base Hall formation. The first phase will include the testing of up to three (3) zones and potentially a fourth contingent zone (refer to Figure 2 at the PDF file).
• The clean-up flow for the first sand interval perforated at 1465 metres (Zone 1) which is a Basin Floor Fan ("BFF") reservoir flowed on average at 2.8 million cubic feet per day (equivalent to 467 boepd) on a small 16/64 inch choke with a flowing well head pressure of 940 psi and rising.
• Down hole pressure gauges will be run in the well and Zone 1 will be produced at a stable flow rate (or rates) for approximately 14 hours before a shut in to record a pressure build up over a period of approximately two weeks to define its extent and its connected volume. The pressure response recorded will provide an estimate of the HOCH-1 well reserves potential for this BFF gas sand interval before the testing of further zones.

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