Dr. Graham Carman reports

TINKA ANNOUNCES APPOINTMENT OF ALEJANDRO HERMOZA AS DIRECTOR

Tinka Resources Ltd. has appointed Alejandro Hermoza as a non-executive director of the company. Mr. Hermoza joins the board as the nominee of Compania de Minas Buenaventura, one of Tinka's largest shareholders, replacing Raul Benavides. The company extends its sincere appreciation to Mr. Benavides for his dedicated service and important contributions to Tinka over many years.

Mr. Hermoza brings more than 20 years of leadership experience in sustainability, environmental and social affairs, community relations, and corporate governance. He served as vice-president of sustainability at Buenaventura from 2011 until his retirement in May, 2026, following a 23-year career with Buenaventura.

Brandon Macdonald, chairman of Tinka, commented: "We are delighted to welcome Alex Hermoza to the Tinka board. His extensive experience in sustainability, community relations, and environmental and social management will be invaluable as we advance the Ayawilca and Colquipucro projects toward development.

"We would also like to sincerely thank Raul Benavides for his many years of support and service to Tinka. Raul has been a valued director, mentor to management and strong advocate for the company. On behalf of the board, I thank him for his significant contribution and wish him all the best in his retirement."

Mr. Hermoza joined Buenaventura in 2003, serving in progressively senior roles including human resources manager, community relations manager and vice-president of sustainability. In his executive capacity, he also served on the board of Sociedad Minera El Brocal and as an alternate member of the executive committee of Minera Yanacocha. He currently serves on the board of UDEA (Universidad para el Desarrollo Andino).

Mr. Hermoza holds bachelor's and master's degrees in mechanical engineering from the University of Maryland, College Park, an MBA from Universidad Peruana de Ciencias Aplicadas (UPC), Peru, and completed the advanced management program at Harvard Business School.

The company also announces that its board of directors has authorized and approved the grant of stock options to purchase up to an aggregate of 300,000 shares at an exercise price of 40 cents per share to Mr. Hermoza. The options are subject to vesting provisions as determined by the board and are exercisable on or before June 30, 2031.

About Tinka Resources Ltd.

Tinka is an exploration and development company focused on base and precious metals projects in Peru. The company's flagship property is the Ayawilca project which has substantial mineral resources of zinc and silver, a separate tin resource, and the near-surface Colquipucro silver deposit. The nearby Silvia copper-gold project is a skarn and porphyry target. The company filed a National Instrument 43-101 technical report on an updated PEA (preliminary economic assessment) for the Ayawilca project on April 15, 2024. Dr. Graham Carman, Tinka's president and chief executive officer, has reviewed, verified and approved the technical contents of this release. Dr. Carman is a fellow of the Australasian Institute of Mining and Metallurgy, and is a qualified person as defined by National Instrument 43-101.

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