ATOME Plc RetailBook Offer

RetailBook Offer

• Further to ATOME's announcement on 23 April 2026 regarding a proposed fundraising, ATOME announces a conditional retail offer of new ordinary shares of the Company via RetailBook;
• The Issue Price for the Retail Offer Shares is 60 pence per Retail Offer Share, representing a discount of 34.4 per cent to the closing mid-price of the Company's existing ordinary shares on 22 April 2026;
• The RetailBook Offer is available to both existing shareholders and new investors;
• There is a minimum subscription of £250 per investor in the RetailBook Offer;
• No commission will be charged by RetailBook on applications to the RetailBook Offer.

The RetailBook Offer

ATOME (AIM : ATOM), the AIM quoted low-carbon fertiliser developer is pleased to announce a conditional retail offer of new ordinary shares in the capital of the Company ("Retail Offer Shares") via RetailBook (the "RetailBook Offer") at an issue price of 60 pence per Retail Offer Share (the "Issue Price"), which represents a discount of approximately 0.8% to the closing mid-market price of 60.5 pence per ordinary share on 9 April 2026, being the last trading day immediately preceding the announcement by ATOME providing an update stating that final definitive documentation on the equity financing of the Villeta Project was being finalised by the parties' lawyers and represents a discount of approximately 34.4% to the closing mid-market price of 91.50 pence per Ordinary Share on 22 April 2026, being the last trading day immediately preceding the date of this announcement.

The Company is also conducting a placing of new ordinary shares to institutional investors by way of an accelerated bookbuilding process (the "Placing") and Subscription to certain other investors as announced by the Company earlier today (the "Fundraising Announcement"). Further details of the Placing and Subscription are set out in the Fundraising Announcement For the avoidance of doubt, the RetailBook Offer is not part of the Placing or Subscription.

The RetailBook Offer is conditional on the Retail Offer Shares and the new ordinary shares to be issued pursuant to the Placing being admitted to trading on AIM ("Admission"). Admission is expected to take place at 8:00 a.m. on 30 April 2026 .

The RetailBook Offer will not be completed without the Placing also being completed.

The Company will use the gross proceeds to subscribe for US$31 million of new Preferred equity in the Villeta green fertiliser project (the "Project") pari passu with the Project investors and provide working capital for ATOME's pipeline of projects.

Reason for the RetailBook Offer

The RetailBook Offer is open to eligible investors resident and physically located in the United Kingdom following release of this announcement. The RetailBook Offer is expected to close at 9:00 p.m. on 23 April 2026 and may close earlier at the discretion of the Company or if it is oversubscribed.

The Retail Offer Shares will, when issued, be credited as fully paid and will rank pari passu in all respects with the Company's existing Ordinary Shares including the right to receive all dividends and other distributions declared, made or paid after their date of issue.

Eligibility for the RetailBook Offer

The RetailBook Offer is available to new investors and existing shareholders of the Company. To be eligible to participate in the RetailBook Offer, applicants must be a customer of a participating partner.

Eligible investors wishing to subscribe for Retail Offer Shares should contact their investment platform, retail broker or wealth manager to confirm if they are participating in the RetailBook Offer.

Some partners may only accept applications from existing shareholders and/or existing customers.

There is a minimum subscription of £250 per investor. The terms and conditions on which investors subscribe will be provided by the relevant financial intermediaries including relevant commission or fee charges. Note, no commission will be charged to investors by RetailBook in connection with the RetailBook Offer.

It is a term of the RetailBook Offer that the aggregate value of the shares available for subscription at the Issue Price does not, unless further allocations are agreed by the Company at its discretion, exceed £500,000.

Investors should also note that the RetailBook Offer will remain open alongside a live share price and the market price of the Retail Offer Shares may be less than the Issue Price.