Jaguar Mining Inc. Confirms Readiness for Safe Resumption of Operations at MTL Complex in Minas Gerais, Brazil Following Comprehensive Remediation Efforts

- Awaiting National Mining Agency (ANM) Authorization

TORONTO, ON / ACCESS Newswire / December 15, 2025 / Jaguar Mining Inc. ("Jaguar" or the "Company") (TSX:JAG)(OTC:JAGGF) today announces the successful completion of extensive remediation work and significant progress towards the safe and responsible resumption of its MTL Complex, which includes mining (Turmalina Mine) and processing plant operations. The completion of these remediation efforts allowed the Company to submit detailed technical documentation to the National Mining Agency (ANM) on December 10, 2025, demonstrating full compliance with the measures required and the Company's readiness to restart operations at this complex.

Operations at the MTL Complex were suspended following a slump at the Satinoco dry-stacked pile (DSP) on December 7, 2024. This incident, which involved an estimated 600,000 m³ of material and an approximate extension of 330 meters, led to the issuance of Auto de Interdição n. 52/2024, the ANM'sformal suspension order. The condition for lifting this order was the submission of comprehensive proof of stability for the pile and related infrastructure.

"In addition to mitigating the negative effects caused to the local community of Casquilho, our top priority has always been, and remains, the safe resumption of the MTL Operation, ensuring the safety of our employees, the community, and the environment," commented Luis Albano Tondo, CEO of Jaguar Mining. "I can confidently state that our teams, working alongside leading experts, have meticulously addressed every technical and safety requirement. We have implemented all necessary corrective actions and reinforced our operational safety protocols, achieving demonstrable stability with minimum Factor of Safety required by norms already exceeded in critical areas. The comprehensive documentation submitted to the ANM underscores our robust measures."

Mr. Tondo further emphasized the broader impact of resuming operations: "These activities are vital not only for Jaguar Mining, but also for all our stakeholders and the local economy. Full resumption will generate direct and indirect employment, contribute to CFEM (Financial Compensation for the Exploitation of Mineral Resources), provide meaningful local socio-economic benefits, ensure cash flow for operational, labor, socio-environmental, and indemnity obligations, and reinforce the company's overall liquidity. We are confident in the technical soundness and safety of the MTL Complex and look forward to receiving authorization to resume these critical operations as soon as possible."