Issue of Convertible Loan Notes

Aterian Plc (LSE: ATN), the critical metal-focused exploration and development company, announces that further to the Company's announcement of 2 May 2024, the Company has today issued £500,000 of £1 convertible loan notes ("CLN"). The CLNs are convertible into Ordinary Shares of 1p each in the Company ("Ordinary Shares") at a price of 0.7 pence per Ordinary Share, which is a 12% premium to the mid-market closing price of Ordinary Shares on 1 May 2024. The other main terms of the CLNs are set out in the 2 May 2024 announcement.

The Company will use the CLN issue's net proceeds to accelerate the Agdz exploration drill programme in Morocco, advance operations in Rwanda and Botswana, and bolster its financial flexibility. Simon Rollason, a director of the Company, has subscribed for £42,666.40 of CLNs, and Altus Exploration Management Limited ("Altus"), a subsidiary of Elemental Altus Royalties Corp., a substantial shareholder in the Company, has subscribed for £457,333.60 of CLNs.

The Company has also received notification from Simon Rollason, a director of the Company, that he has today sold 6,095,200 Ordinary Shares of 1p each in the Company at a price of 0.7 pence per Ordinary Share for gross proceeds of £42,666.40, which represents 0.56% of the Company's issued share capital.

The Company is aware that Altus Exploration Management Limited ("Altus"), a subsidiary of Elemental Altus Royalties Corp., a substantial shareholder in the Company, has sold 65,333,371 Ordinary Shares in the Company at a price of 0.7 pence per share for gross proceeds of £457,333.60. Altus's remaining shareholding in the Company is 175,840,152 Ordinary Shares, representing 16.1% of the Company's issued share capital.

Charles Bray, Chairman of Aterian, commented:

"This capital has been issued at a premium and in a challenging small-cap equity funding environment. Further, with this capital injection, we are poised to launch our strategic initiatives in Morocco, starting with the Agdz drill programme. We are deeply grateful for the trust and confidence demonstrated by our investors, and their continued support underscores their belief in our vision and strategy. This equity capital strengthens and underscores the alignment between management and shareholders in driving the Company's strategy and ultimately creating value from an excellent portfolio of Moroccan copper and silver exploration assets.

On behalf of the board and management team, I would like to express our sincere appreciation to our shareholders, whose continued support and partnership are integral to our success. Together, we are poised to achieve new heights and create enduring value for all stakeholders."

Altus's participation in the CLN issue constitutes a material related party transaction. The Company confirms that the requirements of DTR 7.3.8 have been complied with.

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

Aterian Plc:

Charles Bray, Executive Chairman - charles.bray@aterianplc.com

Simon Rollason, Director - simon.rollason@aterianplc.com

Financial Adviser and Joint Broker:

Novum Securities Limited

David Coffman / George Duxberry

Colin Rowbury

Joint Broker:

SP Angel Corporate Finance LLP

Ewan Leggat / Adam Cowl

Financial PR:

Bold Voodoo - ben@baldvoodoo.com

Ben Kilbey

Dealings by Persons Discharging Managerial Responsibilities