For immediate release

22 June 2026

Sundae Bar PLC
 ("sundae_bar" or the "Company")

Board Changes

Sundae Bar Plc (AIM: SBAR), the enterprise platform deploying AI agents for business, announces that Luke Cairns has to stepped down as Independent Non-Executive Director due to his increasing external commitments. His resignation as a Director will be with effect from 30 June.

sundae_bar's CEO, Jill Kenney, commented:

"On behalf of the Board, I would like to extend our sincere thanks to Luke for his service and valuable contributions to the Company during his tenure, and we wish him every success for the future."

For further information, please visit https://corporate.sundaebar.ai/ or contact:

Beaumont Cornish Limited ("Beaumont Cornish") is the Company's Nominated Adviser and is authorised and regulated by the FCA. Beaumont Cornish's responsibilities as the Company's Nominated Adviser, including a responsibility to advise and guide the Company on its responsibilities under the AIM Rules for Companies and AIM Rules for Nominated Advisers, are owed solely to the London Stock Exchange. Beaumont Cornish is not acting for and will not be responsible to any other persons for providing protections afforded to customers of Beaumont Cornish nor for advising them in relation to the proposed arrangements described in this announcement or any matter referred to in it.

About sundae_bar

Following its successful AIM admission in June 2025, sundae_bar is building the go-to commercial platform for AI agents in business.

The Company is developing a continuously improving generalist AI agent and operates a live enterprise marketplace where businesses can access specialised AI agents designed to perform operational work.

At the centre of the ecosystem is a continuously improving generalist AI agent, designed and benchmarked through Subnet 121 (SN121), the Company's decentralised evaluation environment on the Bittensor network. Global developers compete to enhance the agent against structured, real-world challenges, with validated improvements incorporated into a single production model.

Alongside this, the sundae_bar marketplace provides businesses with access to a growing catalogue of specialised AI agents across key operational functions, enabling businesses to discover, deploy and manage AI agents through a single integrated environment.