Annual Financial Report & Notice of AGM

15 June 2026

Rift Helium plc

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

Annual Financial Report, Notice of Annual General Meeting & Change of Registered Office

Rift Helium plc (AIM: RIFT), focused on the exploration and development of primary helium in a proven basin in southwest Tanzania, announces that its 2026 Annual General Meeting ("AGM") will be held at 11.00 a.m. on Wednesday, 8 July 2026 at the offices of Orana Corporate LLP, Eccleston Yards, 25 Eccleston Place, London, SW1W 9NF. The following documents (as applicable) have been mailed to shareholders:

· Annual Report and Accounts for the year ended 31 December 2025 ("Annual Report");

· Notice of AGM; and

· Form of Proxy.

The Company's formal Notice of AGM and Annual Report will be available on the Company's corporate website at https://www.rifthelium.com/

The Company also announces that with immediate effect its registered office address has changed to Eccleston Yards, 25 Eccleston Place, London SW1W 9NF. 

For further information:

www.rifthelium.com

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.