The information contained within this announcement is deemed to constitute inside information as stipulated under the retained EU law version of the Market Abuse Regulation (EU) No. 596/2014 (the "UK MAR") which is part of UK law by virtue of the European Union (Withdrawal) Act 2018. The information is disclosed in accordance with the Company's obligations under Article 17 of the UK MAR. Upon the publication of this announcement, this inside information is now considered to be in the public domain.

27 May 2026

Eden Research

("Eden" or "the Company")

Directorate change

Eden Research plc (AIM: EDEN), a leader in sustainable biopesticide and biocontrol technology, announces that Derek McAllan has stepped down from the Board with immediate effect due to ill health.

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Derek has served as a non-Executive Director of the Company during a significant period for the Company as it gained material regulatory approvals and raised capital.  During this time he guided the Audit Committee as its chair and was a vaulued member of the board.  Rob Cridland will succeed Derek as interim Chair of the Audit Committee until a replacement is found.

The Board would like to express its sincere gratitude to Derek for his commitment and valued counsel throughout his tenure.

Lykele van der Broek, Chairman of Eden Research Plc, commented:

"On behalf of the Board and everyone at Eden Research, I would like to thank Derek for his dedication and contribution to the Company. His insight, professionalism and commitment have been greatly valued. We are naturally saddened that ill health has led to his retirement and we wish him a full recovery and all the very best for the future."

No further disclosures are required pursuant to Schedule Two paragraph (g) of the AIM Rules for Companies.

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For further information contact:

Notes to Editors:

Eden Research is the only UK-listed company focused on biopesticides for sustainable agriculture. It develops and supplies innovative biopesticide products and natural microencapsulation technologies to the global crop protection, animal health and consumer products industries.

Eden's products are formulated with terpene active ingredients, based on natural plant defence metabolites. To date, they have been primarily used on high-value fruits and vegetables, improving crop yields and marketability, with equal or better performance when compared with conventional pesticides. Eden has three products currently on the market:

Based on plant-derived active ingredients, Mevalone® is a foliar biofungicide which initially targets a key disease affecting grapes and other high-value fruit and vegetable crops.  It is a useful tool in crop defence programmes and is aligned with the requirements of integrated pest management programmes. It is approved for sale in a number of key countries whilst Eden and its partners pursue regulatory clearance in new territories thereby growing Eden's addressable market globally.

Cedroz™ is a bionematicide that targets free living nematodes which are parasitic worms that affect a wide range of high-value fruit and vegetable crops globally.  Cedroz is registered for sale on two continents and Eden's commercial collaborator, Eastman Chemical, is pursuing registration and commercialisation of this important new product in numerous countries globally.

Eden's seed treatment product, EcovelexÔ was developed to safely tackle crop destruction caused by birds - a major cause of losses in maize and other crops. Ecovelex works by creating an unpleasant taste or odour that repels birds, leaving the seeds safely intact and the birds unaffected and free to find alternative food sources. The product is based on Eden's plant-derived chemistry, registered in the EU, US and elsewhere, and formulated using Eden's Sustaine® microencapsulation system.

Eden's Sustaine^® encapsulation technology is used to harness the biocidal efficacy of naturally occurring chemicals produced by plants (terpenes) and can also be used with both natural and synthetic compounds to enhance their performance and ease-of-use. Sustaine microcapsules are naturally-derived, plastic-free, biodegradable micro-spheres derived from yeast. It is one of the only viable, proven and immediately registerable solutions to the microplastics problem in formulations requiring encapsulation.

Eden was admitted to trading on AIM on 11 May 2012 and trades under the symbol EDEN. It was awarded the London Stock Exchange Green Economy Mark in January 2021, which recognises London-listed companies that derive over 50% of their total annual revenue from products and services that contribute to the global green economy. Eden derives 100% of its total annual revenues from sustainable products and services.

For more information about Eden, please visit:  www.edenresearch.com.

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