Application for Admission of Shares

Aterian Plc ("Aterian" or the "Company")

Application for Admission

Further to the announcement by the Company on 26 February 2026, application has been made for the 88,000 Fee Shares referenced under the heading "Issue of Equity and Funding", to be admitted to trading on the London Stock Exchange, with admission expected to occur on or around 10 March 2026.

Following the issue of the Fee Shares, the Company's enlarged issued share capital will comprise 17,684,000 ordinary shares of £0.10 each.

This figure of 17,684,000 represents the total voting rights in the Company and should be used by shareholders as the denominator for the calculation by which they can determine if they are required to notify their interest in, or a change to their interest in the Company under the Financial Conduct Authority's Disclosure Guidance & Transparency Rules.

- ENDS -

For further information, please visit the Company's website: www.aterianplc.com or contact:

Aterian Plc:

Charles Bray, Executive Chairman - [email protected]

Simon Rollason, Director - [email protected]

Financial Adviser and Joint Broker:

AlbR Capital Limited

David Coffman / Dan Harris

Colin Rowbury

Tel: +44 (0)207 7469 0930

Joint Broker:

SP Angel Corporate Finance LLP

Ewan Leggat / Adam Cowl 

Tel: +44 20 3470 0470

Financial PR:

Bald Voodoo - [email protected]

Ben KilbeyTel: +44 (0)7811 209 344

Subscribe to our news alert service: https://atn-l.investorhub.com/auth/signup

Notes to Editors:

About Aterian plc

www.aterianplc.com

Aterian plc is an LSE-listed exploration and development company with a diversified African portfolio of critical metals projects.

Aterian plc is actively seeking to acquire and develop new critical metal resources to strengthen its existing asset base while supporting ethical and sustainable supply chains as the world transitions to a sustainable, renewable future. The supply of these metals is vital for developing the renewable energy, automotive, and electronic manufacturing sectors, which are increasingly important in reducing carbon emissions and meeting global climate ambitions.

The Company hold an exploration licence in southern Rwanda, where it is evaluating the tantalum and niobium opportunity, in addition to further exploring for pegmatite-hosted lithium. Aterian has a portfolio of multiple copper-silver (+ gold) and base metal projects in Morocco. Aterian holds a 90% interest in Atlantis Metals. This private, Botswana-registered company holds ten mineral prospecting licences for copper-silver in the world-renowned Kalahari Copperbelt and three for lithium brine exploration in the Makgadikgadi Pans region.

The Company's strategy is to seek new exploration and production opportunities across the African continent and to develop new sources of critical mineral assets for exploration, development, and trading.