Signing Ceremony and Advisors Appointed

5 May 2026

Helium One Global Ltd

("Helium One" or "the Company")

Signing Ceremony for the Southern Rukwa Helium Project Mining Licence

Advisors Appointed for Farm-Out Process

Helium One Global (AIM: HE1), the primary helium explorer in Tanzania with a 50% working interest in the Galactica-Pegasus helium development project in Colorado, USA, is pleased to announce that the formal signing ceremony for the award of the Company's Mining Licence over the southern Rukwa Helium Project was held on Saturday 2 May 2026.

Signing Ceremony for the Southern Rukwa Helium Project Mining Licence

The ceremony, held in the Songwe region of Tanzania close to the Company's flagship development project, marks the formal completion and execution of the agreements that support the Mining Licence which was awarded to the Company in July 2025. The Company and the Government of Tanzania have now executed the Framework Agreement, and the Shareholders' Agreement under the newly formed joint venture company, Songwe Helium Ltd, in which Helium One holds an 83% interest.

Lorna Blaisse, Chief Executive Officer, and Graham Jacobs, Commercial and Finance Director, together with the Directors of Songwe Helium Ltd. and the Company's senior in-country team attended the ceremony with representatives from the Government of Tanzania, Ministry of Minerals and the Mining Commission.

The Mining Licence is the first helium licence awarded in Tanzania, and covers an area of 480km2, the largest mining licence area ever awarded in the country.

Farm Out Advisors Appointed

The Company is also pleased to announce that PVE Consulting Ltd ("PVE") have been formally engaged to lead the farm-out process for the southern Rukwa Helium Project. PVE is an international advisory consulting firm with 20 plus years' experience providing management services across the upstream sector. PVE has been engaged by a number of companies across Africa and other regions on high-level mandates in transaction support and exploration and production campaigns.

PVE have been mandated to progress discussions with potential industry partners and seek external investment to advance the project towards development.

Lorna Blaisse, CEO of Helium One, commented:

"This event marks a historic milestone for both the Company, and for the Government of Tanzania. It marks the continuation of a ten-year relationship between Helium One and the Ministry of Minerals and Mining Commission.

We look forward to continuing this partnership with the Government going forward, under the joint venture company, Songwe Helium Ltd, particularly at such a crucial time for the helium sector as demand for this critical resource continues to rise.

I wish to thank the Government of Tanzania, the University of Dar es Salaam, all our stakeholders and the local communities where we operate who have all continued to support us as we progress this globally strategic project towards its development. I also wish to thank the Helium One team for their continued hard work in delivering this project.

This milestone comes at a time where we are also focused on launching our strategic farmout process for the southern Rukwa Project to select a suitable industry partner and we are pleased to have appointed PVE to lead this process.

We look forward to providing further updates as we drive forward the development of our southern Rukwa Helium Project."

For further information please visit the Company's website: www.helium-one.com

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Notes to Editors

Helium One Global is the primary helium explorer in Tanzania with a 50% working interest in the Galactica-Pegasus helium development project in Colorado, USA. The Company holds helium licenses within two distinct helium project areas, across two continents and has the potential to become a strategic player in resolving a supply-constrained helium market.

The Company's flagship southern Rukwa Project is located within the southern Rukwa Rift Basin in south-west Tanzania. This project is entering a full appraisal and development stage following the success of the 2023/24 exploration drilling campaign, which proved a helium discovery at Itumbula West-1 and, following an extended well test ("EWT"), successfully flowed 5.5% helium continually to surface in Q3 2024.

Following the success of the EWT, the Company filed a Mining Licence ("ML") application with the Tanzania Mining Commission in September 2024 and the 480km2 ML was awarded to the newly formed, joint venture company Songwe Helium Ltd in July 2025.

In May 2026, the Company and the Government of Tanzania completed the formal award of the ML when the supporting agreements were executed at an official signing ceremony in the Songwe Region. close to the Company's southern Rukwa Helium Project.

The Company also owns a 50% working interest in the Galactica-Pegasus helium development project in Las Animas County, Colorado, USA. This project is operated by Blue Star Helium Ltd (ASX: BNL) and successfully completed a six well development drilling campaign in H1 2025. The completion of the development programme is a key component of the broader Galactica-Pegasus development strategy; aimed at progressing the helium and CO2 discoveries to near-term commercial production.

This programme has seen a systematic approach to developing the extensive Lyons Formation reservoir. The programme has delivered encouraging results, in line with expectations, consistently encountering good helium (up to 3.3% He) and CO2 concentrations in the target formation and demonstrating promising flow potential. The initial Galactica wells were tied into first gas in Q4 2025, with further wells coming onstream in 2026 for both helium and CO2 production.