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Mendell Helium plc is a helium production and exploration company which operates through its wholly owned subsidiary M3 Helium Corp. (“M3 Helium”) in Kansas, USA.

On 18 May 2026, Mendell acquired the entire issued share capital of M3 Helium. M3 Helium was incorporated to pursue helium production opportunities. It has interests in twelve wells, of which six (Rost 1-26, Peyton 21-1, Nilson 1 Unit 2-22, Smith, Bearman “A”1 and Dimmitt 1) are in production.

During 2025 M3 Helium re-completed the Rost 1-26 well (“Rost 1”) in Fort Dodge, Kansas. With a recorded flow rate of 250 Mcf/day and a helium composition of 5.1 per cent. within the gas stream, M3 Helium has more recently drilled a twin well 330 feet from Rost 1 – the Rost 2-26 well (“Rost Twin”).

The production zone that M3 Helium is targeting in Fort Dodge is known locally as the Morrow Sands, both a narrow and thin formation around 5,000 feet from surface. The management team have carried out considerable work in mapping out the Morrow Sands in Fort Dodge and both existing and future leases of land are typically small tranches designed to access this formation. Based on its experience at Rost 1 and supported by data from analogous wells in Oklahoma, the management team believes that the prospectivity of this region may represent a potentially significant opportunity for the Company.

On 30 April 2026, the Company raised gross proceeds of approximately £5 million, the net proceeds of which are intended to be used to roll out a development of helium production zones in the Fort Dodge region through a combination of re-completing existing third party wells and leasing additional land in Fort Dodge to continue to develop opportunities for new production wells.

Admission to trading on AIM

On 15 June 2026, admission and the first day of dealings commenced by way of an Introduction.

The Perivan shareholder communications team was delighted to work with Cairn Financial Advisers who acted as Nominated Adviser on the successful production and publication of the 175-page admission document.

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