Director/PDMR Shareholding.

29 May 2025

ATOME PLC

("ATOME", "the Company", or "the Group")

Director / PDMR shareholding

As announced on 22 May 2025, certain Directors of the Company subscribed for Subscription Shares at the Issue Price. Further to this announcement, following admission of the Subscription Shares to trading on AIM today, the participating Directors' interests are now as follows:

Further details of the Directors' participation in accordance with the requirements of the Market Abuse Regulation are set out in the Appendix to this announcement.

A copy of this announcement is available on the Company's website, at https://www.atomeplc.com

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 is in the early stages of developing a significant green power generation and infrastructure business.

ATOME's first project in Villeta, Paraguay, benefits from a 145MW renewable power purchase agreement and 43 hectares of land in a tax-free zone. Front End Engineering Design studies have been completed and Heads of Terms signed with Yara International, the leading international fertiliser company, for offtake of all of Villeta's green fertiliser production. In early 2025, ATOME announced Hy24, the leading clean hydrogen asset manager, as anchor and lead equity investor in the project, and confirmed the signing of the US$465 million fixed-price EPC contract with leading ammonia and fertilizer engineering specialist Casale S.A. The Company is now negotiating the project finance with a view to commencing work in 2025. There is a further 300MW of renewable power reserved for ATOME in Paraguay.

In Costa Rica, The National Ammonia Corporation S.A. was formed in 2022 with local partner Cavendish S.A. based in Costa Rica to develop green fertiliser projects for the region. As well as straddling the Pacific and Atlantic Oceans, Costa Rica is a democratic Central American country. In agriculture, Costa Rica is the second largest supplier of pineapples in the world and is in the top ten banana growers.

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.

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.

Other information

Beaumont Cornish Limited ("Beaumont Cornish") is the Company's Nominated Adviser and is authorised and regulated by the FCA. Beaumont Cornish's responsibilities as the Company's Nominated Adviser, including a responsibility to advise and guide the Company on its responsibilities under the AIM Rules for Companies and AIM Rules for Nominated Advisers, are owed solely to the London Stock Exchange. Beaumont Cornish is not acting for and will not be responsible to any other persons for providing protections afforded to customers of Beaumont Cornish nor for advising them in relation to the proposed arrangements described in this announcement or any matter referred to in it.

APPENDIX

Beaumont Cornish Limited ("Beaumont Cornish"), which is authorised and regulated in the United Kingdom by the FCA and is a member of the London Stock Exchange, is the Company's nominated adviser for the purposes of the AIM Rules. Beaumont Cornish is acting exclusively for the Company and will not regard any other person (whether or not a recipient of this announcement) as a client and will not be responsible to anyone other than the Company for providing the protections afforded to its clients nor for providing advice in relation to the contents of this announcement or any other matter referred to herein. Beaumont Cornish's responsibilities as the Company's nominated adviser under the AIM Rules for Nominated Advisers are owed to the London Stock Exchange and not to any other person and in particular, but without limitation, in respect of their decision to acquire Ordinary Shares in reliance on any part of this announcement. Beaumont Cornish has not authorised the contents of this announcement for any purpose and no liability whatsoever is accepted by Beaumont Cornish nor does it make any representation or warranty, express or implied, as to the accuracy of any information or opinion contained in this announcement or for the omission of any information. Beaumont Cornish expressly disclaims all and any responsibility or liability whether arising in tort, contract or otherwise which it might otherwise have in respect of this announcement.

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