Mendell Helium plc has officially joined the AIM market of the London Stock Exchange, with trading in its ordinary shares commencing today as the company seeks to accelerate the development of its helium production operations in Kansas, United States.
Mendell Helium: From AQSE Producer To AIM Growth Story
The AIM admission marks a significant milestone for the helium producer, which will simultaneously begin the process of leaving the Aquis Stock Exchange Growth Market. The company’s shares are scheduled to be withdrawn from Aquis on 30 June 2026.
Alongside its market transition, Mendell Helium recently completed a £5 million fundraising, providing fresh capital to support expansion across its Fort Dodge helium project area.
Management intends to use the net proceeds to drill additional production wells, expand field operations and advance the development of helium purification infrastructure designed to support future commercial production growth.
The company’s flagship producing asset, the Rost 1-26 well in Kansas, continues to underpin its development strategy. The well has demonstrated a helium concentration of 5.1%, significantly above many commercial helium projects globally, and has recorded flow rates of approximately 250 thousand cubic feet per day.
Mendell believes the performance of Rost 1-26 provides a proven operational template that can be replicated across its wider acreage position in the Fort Dodge region.
As part of its long-term incentive arrangements, the company has also granted options over 33.3 million new ordinary shares to directors and employees at an exercise price of 4.5 pence per share.
In addition, founder Paul Mendell has been granted warrants over 250,000 new ordinary shares exercisable at 6 pence per share.
The AIM admission provides Mendell with access to a broader pool of institutional and retail investors at a time when helium remains a strategically important commodity, driven by demand from sectors including semiconductors, medical imaging, aerospace and advanced manufacturing.
With fresh capital secured, a producing well already established and plans to expand both production and processing capacity, the company is positioning itself to become a more significant participant in the growing global helium market.


