Jaguar Mining Provides Update on BA Zone Exploration at the Pilar Mine, Reports High-Grade Gold Intercepts

12.80 g/t Au over an estimated true width of 25.00m with 320.00 GT (including 27.21 g/t Au over an estimated true width of 7.00m) in hole PPL1174

TORONTO, ON / ACCESS Newswire / August 5, 2025 / Jaguar Mining Inc. ("Jaguar" or the "Company") (TSX:JAG)(OTCQX:JAGGF) is pleased to provide an update on exploration drilling activities at the BA zone, located within its Pilar mine in Brazil. Recent diamond drilling results continue to confirm the presence of high-grade gold mineralization extending at depth.

Since the Company's previous BA zone update (see press release dated September 5, 2024), the Pilar mine has begun to see increased gold grades and additional production from this zone, a trend that is expected to continue.

A total of 2,328 meters of additional drilling has been completed in the BA zone, targeting mineralization between Level 16 and Level 20. The most significant result to date was from drill hole PPL1174, which intersected 12.80 g/t Au over an estimated true width of 25.00m, representing 320.00 GT (Grade x Thickness). This intercept included 27.21 g/t Au over an estimated true width of 7.00m (refer to Figures 1, 2 and 3 for more details).

Highlights from diamond drilling completed since September 2024 include:

• 12.80 g/t Au over an estimated true width of 25.00m - hole FSB1174 - including 27.21 g/t Au over an estimated true width of 7.00m

• 34.43 g/t Au over an estimated true width of 2.30m - hole FSB1212

• 8.03 g/t Au over an estimated true width of 8.00m - hole FSB1171 - including 12.18 g/t Au over an estimated true width of 4.4m

• 14.52 g/t Au over an estimated true width of 7.00m - hole FSB1173

Armando Massucatto, Exploration Manager for Jaguar Mining, commented: "The exceptional intersections returned from the BA zone, notably by drill holes PPL1102 (see press release dated September 5, 2024) and PPL1174 (this release), underscore both the geological and structural coherence of the mineralization. These results affirm a pronounced down-plunge continuity, characteristic of prolific mineralized systems within the Iron Quadrangle, which are known to persist for several kilometers along plunge. Importantly, the mineralization remains open at depth and expands into adjacent un-tested upper levels, with gold grades maintained along extension. This supports a positive outlook for the ongoing growth of the Pilar mine's mineral resource base, highlighting exploration potential for the addition of further ounces."

Luis Albano Tondo, President and newly appointed CEO of Jaguar Mining, commented: "The ongoing work at the BA zone continues to exceed our expectations. Our latest drilling results confirm that the high-grade gold mineralization continues at depth and validate the continuity and predictability of this orebody across the levels we are actively developing. This comprehensive understanding of the deposit's geometry empowers us to systematically unlock a source of ore reserves in Pilar. We are now confidently forecasting the BA zone to deliver approximately 50% of the mine's total production going forward, solidifying its role as a key growth driver for Jaguar."

Figure 1 - Long Section showing the Pilar Mine underground layout and the position of the BA Zone relative to the other main orebodies. The location of the planned and ongoing BA Zone sub-level access development between level 15 and level 19 is highlighted at the bottom right corner of the figure.

Figure 3 - Long sectional view highlighting the detail of drill holes PPL1173 and 1174, which confirm high grade continuity of the BA Zone over more than 250m.

Table 1 - Summary of significant diamond drilling intersections with grade x thickness (GT) > 20 between Level 16 and Level 20 targeting the BA Zone.