Rift Helium Regulatory News (RIFT)

22 May 2026

Rift Helium plc

("Rift", "Rift Helium" or the "Company")

Company Update

Rift Helium plc (AIM: RIFT), focused on the exploration and development of primary helium in a proven basin in southwest Tanzania, is pleased to provide the following company update to shareholders.

London Stock Exchange Opening Ceremony

Further to the Company's admission to trading on AIM on 22 April 2026, Rift was pleased to take part in the opening ceremony at the London Stock Exchange on Thursday, 21 May 2026. The ceremony was attended by Rift's management team, Board of Directors, key advisers, and the Tanzanian High Commissioner, His Excellency Ambassador Mbelwa Brighton Kairuki, who came together to celebrate this important milestone in Rift's story as a publicly listed company.

Tanzania Country Visit

Earlier this month, Chief Executive Officer, Charles FitzRoy, and Non-Executive Chairman, Patrick Muwowo, travelled to Dodoma, Tanzania, to advance the Company's in-country relationships as Rift progresses its funded work programme at the Upepo Project.

During the visit, the Company held constructive meetings with government ministers and senior officials, most notably from Tanzania's Ministry of Minerals. Discussions focused on responsible exploration, investment into Tanzania, the regulatory environment for helium exploration, and Rift Helium's long-term commitment to working constructively with government and local stakeholders.

The Company also notes the recent announcement by Hon. Anthony Mavunde, Tanzania's Minister for Minerals, in Parliament that helium is to be included on Tanzania's new Critical and Strategic Minerals list, which is expected to be officially published shortly. This is a positive development for Tanzania's emerging helium sector and further supports the country's potential to play a meaningful role in the global helium supply chain.

Rift's management team also met with Vivienne Sirikwa, founder of Forward Motion, a Tanzanian non-governmental organisation. The meeting highlighted the Company's commitment to community engagement and sustainable development in its areas of operation. Rift Helium recognises the importance of working alongside local communities and will continue to seek partnerships that create long-term benefits for host communities.

Charles FitzRoy, Director & CEO of Rift Helium, commented:

"It was an honour to open the London Stock Exchange yesterday and for Rift to take part in the market opening ceremony. Our recent admission to AIM is a key step forward for the Company, providing the platform to progress our funded exploration programme at the Upepo Project as we look to apply our third-mover advantage in Tanzania's proven Rukwa Basin.

"Our recent visit to Tanzania was highly encouraging. Engaging directly with government ministries and senior officials reinforced our confidence in Tanzania's commitment to developing its helium resources responsibly and its ambition to become an important player in the global helium supply chain. The proposed inclusion of helium within the country's new Critical and Strategic Minerals list further underlines the growing recognition of helium's strategic importance.

"During the visit, our meeting with Forward Motion was also important and reflects our commitment to ensuring that our activities contribute positively to local communities and that Rift Helium develops its projects in a responsible and sustainable manner.

"We look forward to providing further updates as we continue to advance our key workstreams across our operations".

For further information, please visit www.rifthelium.com or contact:

About Rift Helium:

Rift Helium is building the primary helium supply the future demands. We hold 283 km² of strategically positioned licences in Tanzania's Rukwa Basin, next to confirmed helium discoveries. The system is proven and we are targeting where helium accumulates.

Following a successful IPO, Rift plans to acquire 3D seismic data and utilise cost-efficient drilling techniques to test these structures and target economically recoverable helium reservoirs, with a clear pathway toward commercial production.