16 September 2025

(EPIC: SRC / Market: AIM / Sector: Construction Materials)

SIGMAROC PLC

 ('SigmaRoc' , the 'Group' or the 'Company')

 Update in relation to the AMeLi project - Potential green lime production in Dunkirk

In September 2022, SigmaRoc announced that it had entered into a joint venture agreement with ArcelorMittal to develop three new net-zero CO₂ lime kilns (the "AMeLi JV"), adding to SigmaRoc's current network of c.70 kilns. However, it has been informed by its partner ArcelorMittal of its material concerns as to the timely execution of the project, including obtaining the necessary French building permits, and that ArcelorMittal will therefore need to step back from the project.

To date, SigmaRoc has only provided minimal funding to the AMeLi JV in order to progress the necessary planning approval.

The AMeLi JV was not expected to commence before Q3-2027, with no material implications on the Group's near-term financial forecasts, medium term targets or CO₂ ambitions.

As set out in the Interim Results Announcement on 8 September 2025, the Board's expectations for the year remain unchanged and in line with consensus including its commitment to the delivery of synergies in the Group before 2027.

Information on the Company is available on its website, www.sigmaroc.com.

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About SigmaRoc 

SigmaRoc is a quoted European lime and minerals Group. 

Lime and limestone are key resources in the transition to a more sustainable economy. New applications for lime and limestone products as part of a drive for sustainability include the production and recycling of lithium batteries, the decarbonisation of construction including through substitution of cementitious material and new building materials, and environmental applications including lake liming, air pollution and direct air capture.

SigmaRoc invests in and acquires businesses in the lime and minerals sector. The principal activity of the Group is the production of lime and minerals products. The Group's aim is to create value for shareholders through the successful execution of its strategy in the lime and minerals sector. 

SigmaRoc seeks to create value by purchasing assets in fragmented markets and extracting efficiencies through active management and by forming the assets into larger groups. It seeks to de- risk its investments through the selection of projects with strong asset backing. The Group seeks to implement operational efficiencies that improve safety, enhance productivity, increase profitability and ultimately create value for Shareholders.