29 May 2025

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

Helix Exploration PLC admission to trading on OTCQB Market

Helix Exploration, the helium exploration and development company with near-term production assets within the 'Montana Helium Fairway', is pleased to announce that its shares ("Ordinary Shares") have been approved to trade on the OTCQB Venture Market ("OTCQB") in the United States and will commence trading on the stock market at 09:30 EST / 14:30 BST on Thursday 29^th May 2025 under the symbol "HHEXF".

This will not affect trading of the Company's Ordinary Shares on AIM, which will continue under the symbol "HEX", and no new Ordinary Shares have been issued through this process. The Company will continue to make all announcements and disclosures to the London Stock Exchange through the Regulatory News Service and is not subject to any Sarbanes-Oxley or US Securities and Exchange Commission reporting requirements.

Trading on the OTCQB offers enhanced investor benefits in the form of easier trading access for investors located in the U.S. and potentially greater liquidity due to a broader geographic pool of potential investors. Through trading on the OTCQB, Helix will be able to engage with a network of U.S. investors ensuring that they have the same level of information and disclosure available to investors in the United Kingdom, but through U.S.-facing platforms and portals. In addition, the OTCQB trading facility will provide U.S. based investors with the ability to access the Company's Ordinary Shares in U.S. dollars during U.S. market hours.

Bo Sears, CEO of Helix Exploration, commented:

"I am pleased to be able to announce a milestone for Helix with our shares now approved for trading on the OTCQB market in New York. We look forward to welcoming U.S. investors to Helix at a pivotal moment for the Company, as we progress from explorer to developer and prepare to commence production at our Rudyard project in Montana.  With the helium market undergoing major structural challenges, our near-term production, strong reservoir performance, and low-cost operating model uniquely position Helix as large domestic source of helium"

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 1.1% helium. Rudyard field can support multiple production wells and has potential to generate net revenue of $115 - $220 million over a 12 - 14 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.