Prospex Energy plc / Index: AIM / Epic: PXEN / Sector: Oil and Gas

26 March 2026

Prospex Energy plc

("Prospex" or the "Company")

Corporate Update & New Corporate Presentation

Prospex Energy plc (AIM: PXEN), the AIM quoted investing company focused on European gas and power projects, is pleased to announce the release of its latest corporate presentation, which Tom Reynolds, CEO, will be presenting at the Investor Meet Company Event this afternoon, 26 March 2026, at 3:00 p.m. The presentation is available on the Company's website: www.prospex.energy.

This event is a prime opportunity for existing and potential investors to gain valuable insights into Prospex Energy's growth strategy, operational progress and the expanding opportunities in the European energy market.

The presentation contains an update on the Company's investment strategy and certain assets, including:

Viura, Rioja Province, Spain

•    Average production rates during January and February 2026 are 101,000 Ncm/d gas and 148 cubic metres produced water per day

•    These rates are not indicative of steady state operation as the operating regimes have been selected to inform boundary conditions within the dynamic model

•    The Company expects the modelling work to have completed by end April 2026 and a steady state operational regime established

San & Dunajec exploration licences, Poland

The Dunajec licence contains an undeveloped oil discovery drilled in 1966 which may contain up to 2 million barrels Oil Originally in Place based on historic estimates with 13m of pay interval measured in fractured carbonate at a depth of c. 600m.  

2025 Cash Reconciliation

The presentation includes an unaudited cash reconciliation for calendar year 2025 and an indicative estimate for Q1 2026 which takes account of cash directly controlled by the Company but excludes cash flows related to its 7.5% ownership stake in HEYCO Energy Iberia corresponding to the Viura field.

This announcement contains inside information for the purposes of Article 7 of the Market Abuse Regulation (EU) 596/2014 as it forms part of UK domestic law by virtue of the European Union (Withdrawal) Act 2018 ("MAR") and is disclosed in accordance with the Company's obligations under Article 17 of MAR.

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For further information, please contact:

Further information on the Company can be found on its website at www.prospex.energy.

Notes

Prospex Energy plc is an AIM quoted investing company focused on high impact onshore and shallow offshore European opportunities with short timelines to production.  The Company's strategy is to acquire undervalued projects with multiple, tangible value trigger points that can be realised within 12 months of acquisition and then applying low-cost re-evaluation techniques to identify and de-risk prospects.  The Company will rapidly scale up gas production in the short term to generate internal revenues that can then be deployed to develop the asset base and increase production further.