24 June 2026

Quantum Helium Limited

("Quantum" or the "Company")

Publication of OAK Securities Research Report

Quantum Helium Limited (AIM: QHE) announces that OAK Securities has published an independent research report on the Company, which is now available on the Quantum Helium website. The report highlights the scale of the Company's Colorado helium portfolio, recent operational achievements at Sagebrush, and what OAK Securities believes is material upside to the current Quantum Helium share price.

Highlights

• OAK Securities initiates research coverage on Quantum Helium

• OAK Securities valuation analysis indicates material upside to the current Quantum Helium share price

• Quantum recognised as having one of the largest independently certified helium resource positions among London-listed helium companies, with more than 1 Bcf of independently assessed helium resources across the Sagebrush and Coyote Wash projects

• Successful Sagebrush-1 extended production test confirmed helium concentrations of 2.5%, together with reservoir connectivity and commercial oil production, further de-risking the Company's flagship project

• Strong financial position following the Company's £5 million institutional capital raise completed in April 2026

• Multiple near-term operational catalysts identified across the Company's Colorado helium portfolio

• Exposure to strengthening helium market fundamentals, supported by increasing demand from semiconductor, medical imaging, aerospace and AI-related industries

The OAK Securities research report is available under the Research section of the Company's website and can be accessed using the following link:

https://www.quantum-helium.com/investors/research/

Enquiries:

Updates on the Company's activities are regularly posted on its website: www.quantum-helium.com

Notes to editors

Quantum (AIM: QHE) is a helium, hydrogen and hydrocarbon exploration, development, and production company with projects in the US and Australia. Quantum's strategic objectives remain consistent: to identify opportunities which will provide operating cash flow and have development upside, in conjunction with progressing exploration. The Company has several projects in the US, in addition to royalty interests in Australia.