Jaguar Mining reports consistent drill results from BA Zone at Pilar Gold Mine, Brazil

Jaguar Mining Inc. [TSX: JAG; OTCQX: JAGGF] reported the latest results from its ongoing diamond drilling program at the Pilar Gold Mine, located within the Iron Quadrangle in Minas Gerais, Brazil. The current campaign successfully targeted the down-plunge extensions of the BA Zone within the Pilar Mine, demonstrating that high-grade mineralization remains robust and predictably continuous at depth. These results support a key component of the Company’s strategy to de-risk and convert its current exploration targets into formal Mineral Resources.

Highlights – Proven Continuity: Drilling confirms that the BA Zone mineralization extends over 1.5 km down-plunge and remains open at depth, indicating significant untapped potential.

High Geological Confidence: Consistent gold grades and structural thickness support high-certainty modeling for an additional 300 vertical metres beyond current mining levels.

Resource Growth Potential: These results validate the strategy to convert the gold mineralization in this highly prospective exploration target into formal Mineral Resources, supporting the potential expansion of the Life of Mine (LOM).

Superior Grades: Key intercepts significantly exceed the mine’s current average reserve grade, including 5.30 metres at 8.52 g/t Au and 10.00 metres at 5.82 g/t Au. Refer to original press release for more assays.

“The consistency of the BA Zone at depth is a testament to the quality of the Pilar orebody,” stated Armando Massucatto, General Manager of Exploration of Jaguar. “By balancing technical precision with our operational goals, we are demonstrating that the potential of this exploration target is not just theoretical, but a tangible pathway to growth. The structural predictability we are seeing allows us to plan our underground development with increased confidence, effectively de-risking the next phase of the mine’s evolution.”

The mineralized zones at the Pilar Mine are primarily hosted within a robust Banded Iron Formation (BIF) sequence. The gold mineralization is structurally controlled by the intersection of regional fold axes with the BIF layer, which creates concentrated “mineralized shoots” of higher-grade material.

Technically, the “open” nature of these folds at depth is a critical factor for the deposit’s scale. These structural elements provided the necessary accommodation space for the circulation of gold-bearing hydrothermal fluids during the mineralizing event. Because these folds are continuous and well-defined, the resulting mineralization follows a predictable geometry. This means that the risk of “losing” the mineralized zone at depth is significantly reduced, as the geological model continues to be validated by every new drill hole.

The company believes that the property has the potential for additional ounces below the extent of the current active underground workings. This is based on previous exploration on the property, including over 2,873 historic drill holes. The exploration target potential was derived by modeling the identified vein systems, and their surrounding “halo” mineralization, as evidenced by drill intercepts in the exploration target area, across vertical long sections of the mine area. There has been insufficient exploration to define a mineral resource with respect to the exploration target, and the Company cautions that there is a risk further exploration will not result in the delineation of a mineral resource.

The Pilar Mine is located in the Iron Quadrangle (Quadrilátero Ferrífero), a world-class, prolific greenstone belt in the state of Minas Gerais, Brazil. This region is renowned for its significant iron and gold deposits, hosted within Archean and Paleoproterozoic sequences. Jaguar’s strategic land package in this district continues to offer substantial exploration upside.

Jaguar Mining is 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 Caeté complex (Pilar and Roça Grande mines, and Caeté plant). The Roça Grande mine has been on temporary care and maintenance since April 2019. The company also owns the Paciência complex (Santa Isabel mine and plant), which had been on care and maintenance since 2012 and is under review to restart in 2026.