19 December 2025

Quantum Base Holdings plc

("Quantum Base" or the "Company")

Result of General Meeting, PDMR Dealings & TVR

Quantum Base (AIM: QUBE), the quantum science company focused on creating a new global standard in authentication, is pleased to announce that all the proposed resolutions tabled at the Company's General Meeting held earlier today were duly passed. Voting results of the General Meeting can be found on the Company's website.

Further to the Company's announcements on 2 and 3 December 2025, and the passing at the General Meeting, the following Directors/PDMR have subscribed for a total of 94,952 New Shares at the Issue Price of 21 pence.

The Notification of Dealing Form set out in the appendix is provided in accordance with the requirements of the EU Market Abuse Regulation, as it forms part of UK law.

Admission and Total Voting Rights

Application has been made to the London Stock Exchange for the 20,286,845 New Shares to be admitted to trading on AIM. It is expected that Admission will become effective, and that dealings in the New Shares will commence on AIM, at 8.00 a.m. on or around 22 December 2025.

The Enlarged Share Capital, as increased by the New Shares, immediately following Admission will be 84,367,164, with no Ordinary Shares in treasury. Therefore, the total number of voting rights will also be 84,367,164. 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 a change to their interest in, the share capital of the Company under the FCA's Disclosure Guidance and Transparency Rules.

The new Ordinary Shares, when issued, will be credited as fully paid and will rank pari passu in all respects with each other and with the existing Ordinary Shares, including the right to receive all dividends and other distributions declared, made or paid after the date of issue.

Capitalised terms not otherwise defined in the text of this announcement have the meanings given in the Circular published on 3 December 2025.

ENDS

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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 ensure 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.