For immediate release

13 May 2026

ATOME PLC

("ATOME" or the "Company")

Results of General Meeting

Unconditional Final Investment Decision

Casale Subscription Shares

ATOME (AIM: ATOM), the leading low-carbon fertiliser developer and the UK's only dedicated international industrial scale low-carbon fertiliser company, is pleased to announce that all Resolutions proposed to shareholders at the Company's General Meeting held at 11.00am today were duly passed with Final Investment Decision ("FID") for the flagship 260,000 tonne-per-year low-carbon fertiliser project at Villeta, Paraguay ("Villeta" or "the Project") now unconditional.

Results of General Meeting

Further to the Notice of General Meeting published on 27 April 2026, ATOME is pleased to announce that shareholders have today approved all Resolutions, including the approval of the Villeta Transaction and inter alia the renewal of share authorities to permit the issue and allotment of shares to Casale S.A., the EPC contractor for the Villeta Project (the "Casale Subscription").

As a result of the approvals granted at the General Meeting, FID at Villeta is now unconditional, with strategic partner Casale S.A. becoming a long-term shareholder in ATOME.

The Company is now working to satisfy all conditions precedent prior to First Disbursement in respect of the Villeta Project financing.

The Company expects to commence early site works at Villeta before the end of June 2026, and a further update will be provided before the end of May.

Casale Subscription Shares AIM Application

Following the General Meeting, application is being made to the London Stock Exchange for admission to trading on AIM in respect of the 20,987,654 new Ordinary Shares to be issued to Casale pursuant to the Casale Subscription at the Issue Price of 60p per new Ordinary Share as announced on 24 April 2026 ("Casale Subscription Shares").

The Casale Subscription Shares will rank pari passu in all respects with the existing Ordinary Shares of the Company and the Company expects that Admission of the Casale Subscription Shares will take place at 8.00 a.m. on 21 May 2026.

On Admission of the Casale Subscription Shares, the Company's enlarged issue share capital will amount to 95,947,584 Ordinary Shares.

Capitalised terms used but not otherwise defined in this announcement shall have the meanings ascribed to such terms in Appendix III of the announcement published by the Company on 23 April 2023, unless the context requires otherwise.

For further information on ATOME, please visit the Company's Curation Connect showcase at: https://app.curationconnect.com/company/Atome-71605

For more information, please visit https://www.atomeplc.com or contact:

About ATOME

ATOME PLC is an AIM-listed company targeting green fertiliser production with 445-megawatt of projects in Paraguay and a further pipeline of potential projects in Central America. ATOME has now created its ATOME POWER division which is in the early stages of developing a significant green power generation and infrastructure business. ATOME's projects are situated at the heart of one of the world's largest food export hubs - the Mercosur region in the Southern Cone of South America with the Argentinian and Brazilian markets next door. ATOME's production will disrupt the region's heavy dependence on imported fossil fuel generated fertilizer, contributing to regional food security goals.

ATOME's first project in Villeta, Paraguay, benefits from a 125MW renewable power purchase agreement and a 30-hectare site in a tax-free zone, Front End Engineering Design studies have been completed and a 10-year Definitive Offtake Agreement signed with Yara International, the leading international fertiliser company, for offtake of all of Villeta's green fertiliser production, as well as a US$465 million fixed-price EPC contract with leading ammonia and fertiliser engineering specialist Casale S.A. ATOME declared Final Investment Decision on the Villeta Project (subject to shareholder approval) in April 2026 following completion of US$665 million project finance with construction to commence in 2026.

All power for ATOME is from 100% renewable sources and all chosen sites are located close to the power and water sources and export facilities to serve significant domestic and then international demand. Roughly a third of human caused GHG emissions is linked to food production according to UN data, and fertiliser use and production is the source of more emissions than the shipping and aviation industries combined. ATOME's green Calcium Ammonium Nitrate product will contribute to decarbonising the food sector from the bottom up, getting to the root of the food value chain's emissions. ATOME's renewably generated fertiliser is both low-carbon and provides a secure, stable alternative product not reliant on fossil fuels, unlike all nitrogen fertilizer production today.

The Company has a green-focused Board which is supported by major shareholders including Peter Levine, Schroders, a leading fund manager, and Baker Hughes, a global technology company operating in the energy and industry sectors.

IMPORTANT NOTICE

Beaumont Cornish Limited ("Beaumont Cornish"), which is authorised and regulated in the United Kingdom by the FCA, is acting as nominated adviser to the Company. Beaumont Cornish will not regard any other person as its client and will not be responsible to anyone else for providing the protections afforded to the clients of Beaumont Cornish or for providing advice in relation to such proposals. No representation or warranty, expressed or implied, is made by Beaumont Cornish or any of its directors, officers, partners, employees, agents or advisers as to the contents herein including in its accuracy, completeness or verification, or for any other statement made or purported to be made by it or on its behalf, in connection with the Fundraising or Transaction. Beaumont Cornish as nominated adviser to the Company owes certain responsibilities to the London Stock Exchange which are not owed to the Company, the Directors, Shareholders or any other person.

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