Appointment of Chief Commercial Officer

The information contained within this announcement is considered by the Company to constitute inside information as stipulated under the Market Abuse Regulation (EU) No. 596/2014 ("MAR"), and the UK version of MAR which is part of UK domestic law by virtue of the European Union (Withdrawal) Act 2018, as amended. Upon the publication of this announcement via a Regulatory Information Service, this inside information is now considered to be in the public domain.

30 June 2025

Quantum Base Holdings plc

("Quantum Base" or the "Company")

Appointment of Chief Commercial Officer

Quantum Base (AIM: QUBE), the quantum science company focused on creating a new global standard in authentication, is pleased to announce the appointment of David Clough as Chief Commercial Officer of the Company in a non-board role.

David possesses over 30 years of experience in international trade, government relations, and programme management within the security printing industry, having most recently served as Commercial Director of Authentix Security Print Solutions Ltd ("Authentix"). In this role, David spearheaded Authentix's commercial expansion to become one of the largest tax stamp producers in the world, establishing himself as a leading expert in security printing, whilst driving revenue growth through the identification of new business opportunities and the enhancement of existing customer relationships.

Tom Taylor, CEO of Quantum Base, commented:

"I am delighted to welcome David Clough to the Quantum Base team. David is a world-class commercial leader and is highly revered in the security printing industry, having developed a global network of clients that Quantum Base is well-placed to service. The security printing industry has been identified as a strong first application for Q-IDs, and David's vast expertise in this space will be hugely beneficial to our initial growth. The appointment of David also delivers on a key strategic use of the net proceeds of the fundraise from our AIM IPO earlier this year, funding our commercial development and sales initiatives through a key hire.

"David will be instrumental in driving our efforts to bring practical applications of quantum technology to everyday life, and I look forward to working closely with him to achieve these collective goals."

ENDS

For further information, please contact:

About Quantum Base

Quantum Base is a quantum science company creating a new global standard in authentication through its patented Q-ID solution - unbreakable and non-replicable authenticity tags that can be applied to a vast array of products, significantly mitigating counterfeiting.

The technology underpinning Q-IDs harnesses randomness at the atomic level, and this volume and variation ensures that there is virtually an infinite number of combinations that can be created. The Q-ID is practically impossible to replicate using even the most advanced available technology.

Q-IDs can be applied to almost any print line and can be entirely non-intrusive to a product's existing design, meaning that they can be utilised in a vast number of end markets. The authentication process to identify printed tags is undertaken using existing and unmodified smartphone technology, providing easy authentication and proven security for global brands, governments and consumers.