24 April 2026

Helix Exploration PLC

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

Notice of AGM

Helix Exploration PLC (AIM: HEX, OTCQB: HEXFF), the helium exploration and development company advancing the Rudyard Helium Project ("Rudyard") in northern Montana, announces that a Notice of Annual General Meeting ("AGM") has been sent to shareholders of the Company, convening a meeting to be held at Eccleston Yards, 25 Eccleston Place, SW1W 9NF, London on 28 May 2026 at 3pm.

A copy of the notice of AGM is available to download from the Company's website at: https://www.helixexploration.com/.

AGM Webinar

To allow Shareholders the opportunity to follow the proceedings of the AGM without attending in person, the Company will provide access online via the Investor Meet Company ("IMC") platform.

Shareholders are invited to submit questions for the Board to consider. Questions can be pre submitted via the IMC platform up until 09.00 the day before the meeting and can be submitted at any time during the AGM itself.

Please note: Shareholders will not be able to vote online and are requested to submit their votes via proxy as early as possible.

Shareholders that wish to attend the online AGM should register for the event in advance by using the following link:

https://www.investormeetcompany.com/helix-exploration-plc/register-investor

Investors who already follow the Company on the IMC platform will automatically be invited.

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. 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.