Helium One Regulatory News (HE1)

15 December 2025

Helium One Global Ltd

("Helium One" or the "Company")

Production Facility Update at Galactica Project

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 ("the Galactica Project"), provides an update following the Blue Star Helium (ASX: BNL) ("Blue Star") announcement issued today regarding the Galactica Project.

Highlights

· Gathering system has been successfully pressure tested and is now tied-in to the production facility

· Production facility has reached substantial completion

· Facility commissioning to commence this week

· First gas still scheduled ahead of year-end

Lorna Blaisse, Chief Executive Officer, commented:

"I am pleased to announce that we are approaching the commencement of production at the Galactica project in partnership with Blue Star. This achievement marks a significant milestone for both the Joint Venture and our respective organisations. I would like to commend the commitment of the onsite teams, whose efforts have ensured we remain on track to deliver first gas before year-end. We very much look forward to entering the next phase as a producer."

Annual General Meeting

At the Company's Annual General Meeting being held later on this morning Lorna Blaisse, the Company's Chief Executive Officer will provide a general update to Shareholders and answer relevant questions. The presentation discussed will be made available on the Company's website shortly after the event for those who cannot attend.

Shareholders that wish to attend the online AGM should register for the event in advance by using the following link:

https://www.investormeetcompany.com/helium-one-global-ltd/register-investor

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

Notes to Editors

Helium One Global, 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. With an expanding global footprint, the Company 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 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 formally awarded to the Company in July 2025.

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 has 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.

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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 next steps will see the Galactica wells tied into initial production in Q4 2025.