Tier One renews Curibaya deal with Chipispaya community

Mr. Peter Dembicki reports TIER ONE SILVER EXTENDS COMMUNITY PARTNERSHIP AT CURIBAYA AND PREPARES FOR NEXT PHASE OF DRILLING AND EXPLORATION Tier One Silver Inc., through its Peruvian subsidiary Magma Minerals SAC, has renewed its social access agreement with the local Chipispaya community at its flagship Curibaya project in southern Peru. The agreement, in effect through June 11, 2026, can be extended with community assembly approval. As part of the agreement, Tier One has committed to continuing to support local employment and training initiatives. Peter Dembicki, chief executive officer of Tier One, commented: "We are very pleased to extend our partnership with the Chipispaya community, whose collaboration continues to allow us to responsibly advance Curibaya. Securing this renewed social access agreement provides Tier One with the access required to prepare for the next phase of drilling, which seeks to unlock the significant high-grade silver-gold and copper potential we see at the Cambaya corridors, which have never been drilled, and across the broader project area." Located on a prolific copper porphyry belt, the 17,000-hectare Curibaya project hosts high-grade silver, gold and copper exploration potential. Despite extensive mineralization indicators, only a fraction of the property has been explored. Six distinct high-grade silver-gold mineralized kilometric corridors and a compelling copper porphyry target have been identified. The company is preparing for its next drill campaign to start in first quarter 2026, planned to focus on expanding its highest-priority silver-gold target: the Cambaya area. Qualified person Christian Rios (senior vice-president of exploration), PGeo, is the qualified person who has reviewed and approved the technical contents of this press release. About Tier One Silver Inc. Tier One Silver is an exploration company focused on creating value for shareholders and stakeholders through the discovery of world-class silver, gold and copper deposits in South America. The company is focused on its flagship exploration project, Curibaya. The company's management and technical teams have a strong record in raising capital, discovery and monetization of exploration success. The company is also actively reviewing other resource projects in South America with a longer-term goal of selectively rebuilding a pipeline of prospects for future exploration. We seek Safe Harbor.