12 June 2025

Helix Exploration PLC
("Helix Exploration" or "Helix" or the "Company")

Mobilisation of Drilling Rig to Inez #1

Helix Exploration, the helium exploration and development company with near-term production assets within the 'Montana Helium Fairway', is pleased to announce the mobilisation of rig and equipment to Inez #1 drill location, the fourth Production well at the Rudyard Project, Montana has commenced.

Highlights:

·    Construction completed access road and drill pad at Rudyard

·    Mobilisation commenced utilising Treasure State Drilling Cardwell KB-150 D1D drilling rig

·    Drilling of Inez #1 is well expected to commence next week

Bo Sears, CEO of Helix Exploration, commented:

"Mobilisation of drilling equipment to Inez #1 marks the rapid acceleration of the development of the Rudyard Project.  The fourth production well is strategically positioned to extend proven helium reserves and prepare increased helium flow ahead of first production.  Expanded production increases near-term cash flow, reduces the timeline to full-field production and delivers stronger project economics and long-term value creation."

Rig Mobilisation

Helix has commenced mobilisation of rig and equipment to Inez #1 drill site at the Rudyard project in Montana.  Inez #1 will be the fourth production well to be drilled on the Rudyard field and is targeting the extension of proven helium reservoirs in Souris and Red River formations to the south of Linda #1.

The additional production wells are intended to optimise ramp up to full field production by increasing cash-flow within the first 6 months of production.  Greater cash-flow will allow the Company to expand its 2026 drilling campaign and is anticipated to enable the Company to reach full-field production in one year rather than two, improving overall project economics and NPV.

Drilling is expected to commence next week and will take circa 10 - 14 days to complete.  Further announcements will be made in due course as drilling commences.

This announcement contains inside information for the purposes of the UK Market Abuse Regulation, and the Directors of the Company are responsible for the release of this announcement.

Enquiries

Helix Exploration

Cairn - Nominated Adviser

Hannam & Partners - Joint Broker

Camarco - Financial PR

Notes to Editors

Helix Exploration is a helium exploration company focused on the exploration and development of helium deposits within the 'Montana Helium Fairway'. Founded by industry experts with extensive experience of helium systems in the US, the Company listed in April 2024.

Helix is focused on production at its Rudyard Project in northern Montana, taking advantage of existing infrastructure and low-cost processing to target first gas in 2025. The Company has three production wells targeting up to 236ft Helium / Nitrogen gas in the Souris and Red River formations, flowing up to 3,800 Mcf/day at 1.2% helium. Rudyard field can support multiple production wells and has potential to generate net revenue of $115 - $220 million over a 12.5 year life of field.

Helix is committed to open and transparent communication with investors and the wider market as the project progresses through development into production.

"Our approach is simple: build scale efficiently, develop resources strategically, and deliver near-term cash flow." CEO - Bo Sears

The Company's Admission Document, and other information required pursuant to AIM Rule 26, is available on the Company's website at https://www.helixexploration.com/.