22^nd December 2025

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

Project Update at the Flagship Rudyard Project

Helix Exploration, the helium exploration and development company with near-term production assets within the 'Montana Helium Fairway', is pleased to provide an update on its flagship Rudyard Project as it progresses towards first helium gas production.

Highlights:

·      The PSA compressor, the final long lead item required for helium production, has been fully assembled and is en route to Rudyard.   It is estimated that the compressor will be onsite at Rudyard in the next 3 days.  All preparatory work has now been completed offsite to reduce installation time and commissioning is expected to take 4-5 business days once onsite.

·      Offtake - discussions with industry leaders are expected to be concluded once first gas commences and further announcements will be made in due course.

·      Hydrogen potential - Helix is in active discussions with several globally recognised Tier 1 partners regarding potential hydrogen-related collaboration. These discussions remain at an early stage, and the Company will update the market on any further developments.

·      Helix has acquired additional leases at Rudyard totaling 1,363 acres for modest cash consideration

·      Inez#1 - Drilling operations have been running slower than usual due to severe winter weather.  We are currently pausing operations until after the holiday season when the drilling campaign is expected to resume.

Bo Sears, CEO of Helix Exploration, commented: "We are excited to soon become the first helium producer in the State of Montana & the opportunities that production will present for the Company.  The team remain laser focused on maintaining the momentum built up since the IPO and I look forward to updating the market on the anticipated production milestone."

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 Brokers

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 four 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/.

Caution regarding forward looking statements

Certain statements in this announcement, are, or may be deemed to be, forward looking statements. Forward looking statements are identified by their use of terms and phrases such as ''believe'', ''could'', "should" ''envisage'', ''estimate'', ''intend'', ''may'', ''plan'', ''potentially'', "expect", ''will'' or the negative of those, variations or comparable expressions, including references to assumptions. These forward-looking statements are not based on historical facts but rather on the Directors' current expectations and assumptions regarding the Company's future growth, results of operations, performance, future capital and other expenditures (including the amount, nature and sources of funding thereof), competitive advantages, business prospects and opportunities. Such forward looking statements reflect the Directors' current beliefs and assumptions and are based on information currently available to the Directors.