Mr. Luis Tondo reports

JAGUAR MINING INC. CONFIRMS READINESS FOR SAFE RESUMPTION OF OPERATIONS AT MTL COMPLEX IN MINAS GERAIS, BRAZIL FOLLOWING COMPREHENSIVE REMEDIATION EFFORTS

Jaguar Mining Inc. has successfully completed extensive remediation work and significant progress toward 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 Dec. 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 Dec. 7, 2024. This incident, which involved an estimated 600,000 cubic metres of material and an approximate extension of 330 metres, led to the issuance of Auto de Interdicao No. 52/2024, the ANM's formal 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, chief executive officer 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, labour, 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."

Since the incident, Jaguar Mining has diligently executed a multistage resumption plan designed to ensure the highest standards of operational integrity, environmental protection and worker safety. Key achievements of this plan include:

• Internal drainage system construction: The construction of a robust internal drainage system for the Satinoco DSP was successfully concluded in August, 2025.
• Slope reconfiguration: Extensive cutting and reconfiguration of slopes, particularly behind the paste fill plant, were completed by Nov. 19, 2025, following detailed engineering works.
• Stage 1 -- temporary surface support infrastructure (completed Sept. 23, 2025): This included the installation of essential facilities, including a canteen, male and female changing rooms, an infirmary, a warehouse, and a fuel station. All of these measures to ensure that the site is fully equipped to support the returning work force.
• Stage 2 -- underground emergency paths and ventilation chimneys (completed Nov. 2, 2025): Critical upgrades and adaptations were made to ensure secure emergency exit raises, including the finalization of the emergency exit raise at Faina and the overall enhancement of underground ventilation systems.

Crucially, while the primary focus has been on ensuring overall site safety, Jaguar explicitly confirms that it will not resume direct operation at the Satinoco DSP. Instead, the company has focused on stabilizing the areas critical for adjacent mining and processing activities. The resumption of the metallurgical plant, for example, was contingent upon the stabilization of the pile faces adjacent to the filtration unit and paste fill plant.

Jaguar is pleased to confirm that these specific areas have achieved a factor of safety greater than 1.5, a standard measure indicating that the slopes are well within the stability range considered safe for mining operations. It is also important to note that the metallurgical plant and its support infrastructure are located outside the slump zone of the Satinoco DSP.

With stages 1 and 2 of the resumption plan now complete, Jaguar is waiting for ANM authorization for the subsequent operational stages 3, 4 and 5:

• Stage 3 -- resumption of productive underground development;
• Stage 4 -- resumption of underground mining;
• Stage 5 -- operational resumption of the metallurgical plant on the surface.

Jaguar Mining remains committed to continuing to engage closely and transparently with all regulatory authorities and will provide further updates as they become available.

The Iron Quadrangle

The Iron Quadrangle has been an area of active mineral exploration dating back to the 16th century. The discovery in 1699 to 1701 of gold associated with iron and platinum group metals in the southeastern corner of the Iron Quadrangle gave rise to the name of the town Ouro Preto (Black Gold). The Iron Quadrangle contains world-class multimillion-ounce gold deposits such as Morro Velho, Cuiaba and Sao Bento. Jaguar holds the second-largest gold land position in the Iron Quadrangle with over 46,000 hectares.

About Jaguar Mining Inc.

Jaguar Mining is a Canadian-listed junior gold mining, development and exploration company operating in Brazil with three gold mining complexes and a large land package with significant upside exploration potential from mineral claims. The company's principal operating assets are located in the Iron Quadrangle, a prolific greenstone belt in the state of Minas Gerais and include the MTL complex (Turmalina mine and plant) and Caete complex (Pilar and Roca Grande mines and Caete plant). The Roca Grande mine has been on temporary care and maintenance since April, 2019. The company also owns the Paciencia complex (Santa Isabel mine and plant), which had been on care and maintenance since 2012 and is under review to restart in 2026.

We seek Safe Harbor.