Tintina takes interim label off interim CEO Rassmus

Mr. Juan Rassmuss reports TINTINA ANNOUNCES APPOINTMENT OF CEO AND CHANGES TO BOARD OF DIRECTORS Juan Enrique Rassmuss, who is a director, president and chairman of Tintina Mines Ltd. and currently serves as interim chief executive officer since Feb. 26, 2025, has been appointed as chief executive officer (CEO) to replace Eugenio Ferrari who, for continuous medical reasons, has presented his resignation as director and CEO, effective Aug. 27, 2025. The company also announced the appointment of Stefan Jochum, CFA, as director with effect from Aug. 27, 2025. Mr. Jochum, CFA, 46, has more than 20 years of experience in finance and the financial industry. Currently, he also serves as a chairman of Invercap S.A. the controlling shareholder of CAP S.A., Chile (the leading iron ore and pellets producer on the American Pacific coast and a relevant operator in the industrial and infrastructure segment), and as a board member of Cemin Holding Minero (a copper and gold producer in Chile) as well as Grupo Olympic, Peru (an energy conglomerate active in oil, gas and power generation). Previously, Mr. Jochum held board positions in industrial companies in Argentina and Peru as well as in a power generator in Chile. He also worked for almost 10 years at UBS AG in Germany and Switzerland. Mr. Jochum holds a bachelor and postgraduate in international business administration from the Georg-Simon-Ohm University of Nuremberg, Germany, and is a CFA charter holder. "On behalf the company and my fellow board members, I would like to sincerely thank Eugenio for his invaluable contribution during his time as director and CEO of Tintina and we all wish him a hopefully speedy and full recovery," stated Mr. Rassmuss of Tintina Mines. About Tintina Mines Ltd. Tintina Mines is a Canadian-based company with over two decades of experience in the junior mining sector, focused in the acquisition, exploration and development of base and precious metal properties in South America and Canada. Recently, Tintina expanded its portfolio with the addition of five new projects in Chile, following the acquisition of a majority stake in Andean Belt Resources. Tintina is committed to advancing the exploration and development of the copper-gold (Cu-Au) Domeyko Sulfuros project in the Atacama region of northern Chile. Tintina Mines' common shares are listed on the TSX Venture Exchange under the symbol TTS.