30 April 2026

Rosslyn Data Technologies plc

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

Total Voting Rights

Rosslyn (AIM: RDT), the provider of a leading cloud-based enterprise data analytics platform, announces that as at 30 April 2026, the Company has 117,902,876 ordinary shares of 0.1 pence each ("Ordinary Shares") in issue, with each Ordinary Share carrying the right to one vote. There are no Ordinary Shares held in Treasury.

 Therefore, the total number of voting rights in the Company is 117,902,876. This figure may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or there is a chance to their interest in, the Company under the FCA's Disclosure and Transparency Rules.

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About Rosslyn

Rosslyn (AIM: RDT) provides an award-winning spend intelligence platform. The Rosslyn Platform helps organizations with diverse supply chains mitigate risk and make informed strategic decisions. It leverages automated workflows, artificial intelligence and machine learning to extract and consolidate procurement data providing visibility of complex supplier data, enabling supplier spend savings and delivering rapid ROI. For more information visit www.rosslyn.ai. Investors wishing to contact the Company should email [email protected].