Results of Placing

Aptamer Group plc (AIM: APTA), the leading developer of next-generation synthetic binders delivering innovation to the life science industry, announces that is has successfully raised gross proceeds of £4.275 million before expenses through a placing of 536,666,666 Placing Shares and a subscription of 175,833,334 Subscription Shares both at the Issue Price of 0.6p per share.

The Placing receiving strong support from existing and new investors, allowing the Company to broaden its institutional following and market support. The Directors have all subscribed in the Placing.

Dr Arron Tolley, Chief Executive Officer, commented:

"Yesterday's interim results confirm the cash position of £1.5 million at 31 December 2025 and the runway to Q2 2027 that we previously communicated. We are delighted with the strong support we have received in this Fundraise, including from a number of new investors who share our vision for the Optimer® platform. With this strong foundation now validated, the £4.275 million we have raised today is primarily for growth. A small portion will be allocated to working capital, materially extending our runway to 2028 and providing a clear pathway towards EBITDA breakeven. The majority of the funds will accelerate our two highest-potential opportunities: the development of our AI model focused on RNA-binding proteins and transcription factors, and the generation of key in-vivo animal data for the targeted radiopharmaceutical programme. These investments will drive the next phase of commercial value creation from the Optimer® platform."

The 536,666,668 Placing Shares comprise 230,083,333 Firm Placing Shares which have been issued and allotted under the existing authorities to issue shares and conditional on First Admission and are expected to be admitted to trading on AIM on around 31 March 2026, and 306,583,333 Conditional Placing Shares which will be allotted and issued conditional upon the passing of the Resolutions at the General Meeting expected to be convened for 13 April 2026 . The issue of the Subscription Shares is also conditional upon the passing of the Resolutions at the General Meeting expected to be convened for 13 April 2026. Assuming the Resolutions are passed, admission of the Conditional Placing Shares and Subscription Shares to trading on AIM is expected on or around 16 April 2026.

Participants in the Placing and Subscription will receive one Warrant to subscribe for new Ordinary Shares for every three new Ordinary Shares subscribed for in the Placing and Subscription with an exercise price of 0.9 pence per share (being a 50% premium to the Issue Price) at any time in the two years following the date of grant. Warrants will be issued following the General Meeting and settlement of all shares to be issued in connection with the Fundraise. Warrants will be issued in either CREST or certificated form, and will be transferable. No fractions of Warrants will be issued. The Warrants will not be listed on AIM or any other exchange. The Warrants are conditional on the Resolutions being passed at the General Meeting.

Concurrent with the Placing and the Subscription, the Company is undertaking a Retail Offer to existing shareholders for up to £0.5 million also at 0.6p per share. A separate announcement launching the Retail Offer will be made shortly. Subject to demand, the Company and Turner Pope may decide to increase the size of the Retail Offer. For the avoidance of doubt, the Retail Offer is not part of the Placing and is the sole responsibility of the Company. The Retail Offer Shares are not Firm Placing Shares or Conditional Placing Shares.

Settlement and Admission

The Firm Placing Shares, the Conditional Placing Shares and the Subscription Shares will, when issued, be credited as fully paid and will be issued subject to the Company's articles of association and will rank pari passu in all respects with the existing issued Ordinary Shares in the capital of the Company, including the right to receive all dividends and other distributions declared, made or paid on or in respect of such shares by reference to a record date falling after their issue. Application has been made to the London Stock Exchange for the Firm Placing Shares to be admitted to trading on AIM.

It is expected that admission of the Firm Placing Shares will occur at 8.00 a.m. on 31 March 2026 ("First Admission"). Subject to the passing of the Resolutions, it is expected that admission of the Conditional Placing Shares, the Subscription Shares and such number of the Retail Offer Shares as are subscribed for will occur on Second Admission.

General Meeting

The Circular containing a notice convening the General Meeting will be posted to shareholders on or around 27 March 2026. The General Meeting is expected to be convened on or around 13 April 2026.

Total Voting Rights

Following First Admission, the Company's enlarged issued ordinary share capital will be 2,927,061,711 Ordinary Shares, with no shares held in treasury. This figure may be used by shareholders in the Company as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change in their interest in, the share capital of the Company under the FCA's Disclosure Guidance and Transparency Rules.

Capitalised terms in this announcement have the same meaning as defined in the announcement made by the Company at 07.13 on 25 March 2026.

INFORMATION TO DISTRIBUTORS

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