Mr. Jean-Philippe Mai reports

DST ANNOUNCES CHANGES IN ITS BOARD OF DIRECTORS

David Lemieux has resigned from Dundee Sustainable Technologies Inc.'s board of directors. Mr. Lemieux has been an active member of the board since June 21, 2021. His departure represents the final step of the transition out of the corporation since his resignation as chief executive officer on Sept. 30, 2022.

Jean-Philippe Mai, president and chief executive officer of Dundee Sustainable, commented: "We appreciate David's many contributions to DST over the years and his leadership during his tenure as CEO. The board and management are wishing him all the best in his future endeavours."

Appointment to the board of directors

The corporation is also appointing Mr. Mai to the board of directors to fill the vacancy created by Mr. Lemieux's departure. Mr. Mai acts as president and CEO of Dundee Sustainable since Oct. 1, 2022. Following this appointment, the board of directors is composed of Mr. Mai, Robert Sellars and Mario Jacob (chair). Mr. Sellars and Mr. Jacob are independent.

About Dundee Sustainable Technologies Inc.

The corporation is engaged in the development and commercialization of environment-friendly technologies for the treatment of materials in the mining industry. Through the development of patented, proprietary processes, Dundee Sustainable extracts precious and base metals from mineralized material, concentrates and tailings, while stabilizing contaminants such as arsenic, which could not otherwise be extracted or stabilized with conventional processes because of metallurgical issues or environmental considerations.

Dundee Sustainable has filed, has published and was granted patents for the GlassLock process and Clevr process in numerous countries.

We seek Safe Harbor.