2 October 2023

Rosslyn Data Technologies plc

("Rosslyn" or the "Company")

Directorate Change

Rosslyn (AIM: RDT), the provider of a leading cloud-based enterprise data analytics platform, announces the retirement of Bernard ('Barney') Quinn as a Non-executive Director with effect from 30 September 2023.

As previously notified, and having reached the nineth anniversary of his appointment to the Board of Rosslyn, Barney is stepping down in line with corporate governance best practice. Barney will provide support to the Company, as required, to ensure an orderly handover to Ginny Warr, a Non-executive Director of the Company, who succeeds Barney as Chair of the Audit and Remuneration Committees.

The Board intends to appoint the Chief Financial Officer, Ed Riddell, to the Board and a further announcement will be made on this in due course. In the short term, with a view to managing costs, while the Company focuses on reducing cash burn, the Board does not intend to seek to appoint a replacement non-executive director. Accordingly, upon the appointment of Ed Riddell to the Board, the Board will consist of two executive directors and two independent non-executive directors. The Board will continue to keep its composition under review to ensure that it remains efficacious and appropriate to meet the needs of the Company.

James Appleby, Chairman of Rosslyn, said: "On behalf of the Board, I'd like to extend our thanks to Barney for his tremendous contribution to Rosslyn. Having joined the Board at the time of our IPO in 2014, he has played a fundamental role in guiding the business though its journey on AIM and supporting the Board and management team to enable Rosslyn to achieve its successes to date. We are very grateful to Barney, and we wish him all the best for the future."

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About Rosslyn Data Technologies plc

Rosslyn (AIM: RDT) provides an award-winning spend analytics and predictive analytics 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