Jaguar Mining - Drilling Along the Paciencia Trend Exploration Targets Connects Areas of Known Mineralization, Potentially Defining a Broader Gold District, Minas Gerais, Brazil

- Multiple mineralized targets could illustrate a much more extensive gold trend than previously defined

TORONTO, ON / ACCESS Newswire / July 8, 2026 / Jaguar Mining Inc. ("Jaguar" or the "Company") is pleased to announce positive results from the first phase of diamond drilling along the corridor that runs from the Chamé exploration target through the Santa Isabel/Marzagao Mine targets and north to the Bahú target area. These drill results confirm significant mineral potential and reveal a large mineral system connecting Chamé, Santa Isabel, Marzagão, and Bahú (from south to north). This defines a new district with over 15 km strike length in the Paciencia Gold District. (See Figures 1 & 2)

Highlights:

• 3,764 metres across 17 drill holes

• Eight holes totaling 2,245 metres at the Chamé target

• Nine holes totaling 1,518 metres at the Santa Isabel/ Marzagão target

Key Intercepts:

• Chamé Structure:

  • FCM003: 32.21m @ 0.37 g/t Au (including 6.71m @ 1.15 g/t Au)

  • FCM004: 34.30m @ 0.39 g/t Au (including 1.00m @ 2.37 g/t Au)

• Santa Isabel - Marzagão Structure:

  • FCM008: 7.85m @ 2.03 g/t Au (including 2.00m @ 3.17 g/t Au)

  • FSIEXP009: 2.11m @ 3.10 g/t Au (including 1.11m @ 4.62 g/t Au)

All drilling results are detailed in Tables 1 & 2 below.

"The current drilling campaign has successfully demonstrated the physical continuity of the mineralized structure from the Santa Isabel mine toward the Southeast," commented Armando José Massucatto, General Manager of Exploration. "We have also identified a parallel structure in the hanging wall at the Chamé target. The association of these structures confirms the existence of a high-potential district extending over a 15-kilometer trend."

"The strategic objective of the 5-year exploration plan Jaguar announced in late 2025 is to fully and systematically explore the high-priority targets among the +400 mineralized occurrences within the 46,000 hectares of mineral tenements held by Jaguar Mining in the Iron Quadrangle," commented Jaguar Mining CEO Luis Albano Tondo. "The goal of this program is to identify mineral resources which can be developed into mineral reserves, ultimately increasing the total gold production for the Company."

Drilling at the Chamé target intercepted low-grade structures within the hanging wall, while the footwall continues to host the higher-grade mineralization characteristic of the Santa Isabel/Marzagão system. These results allow the Company to track the southeast continuity of the mine's mineralized structure over 1 kilometer beyond current Santa Isabel underground mine workings.

The Paciencia Trend is part of the broader São Vicente lineament regional trend on which sits the world class Morro Velho gold mine (now closed) which produced over 10 million ounces of gold during its years of operation by Anglo Gold Ashanti (1834 to 2004).

Figure 1 - General location map for the exploration targets along this 40km São Vicente lineament, illustrating the southern extension containing Jaguar Mining high priority targets.

Figure 2 - Focus on the Chamé to Bahú corridor of high priority exploration targets

Figure 3: Longitudinal section looking Northeast showing key results from the drilling campaign. In green, the modeled structure based on recent results correlates with the mineralized structure hosting the Santa Isabel/Mazargão mine (visible in brown on the right portion of the figure, footwall). The green structure represents the hanging wall containing the lower-grade mineralization at Chamé.

When comparing these results with historical data from the Bahú target (refer to the technical report available on SEDAR+ entitled "NI 43-101 Technical Report, Caeté Mining Complex, Minas Gerais, Brazil", with an effective date of December 31, 2025), there is a clear similarity in gold mineralization structures. The presence of multiple sub-parallel mineralized bodies suggests a robust system of stacked structures.

Figure 4: Type section of the Bahú target showing low-grade halos with high-grade cores (as indicated in the composites). Note the significant down-dip continuity of mineralization.

The dual-structure nature of the Chamé target is attributed to the São Vicente lineament, which functions as an anastomosing shear zone with multiple branching splays. While surface continuity is evidenced by colonial-era (1700s) workings, Jaguar's systematic mapping and sampling is identifying new structures that indicate high potential for additional medium-to-low grade gold mineralization which could lead to open pit potential.

The confirmed continuity of these structures through drilling indicates a structurally controlled mineralized system active along the 15 kilometers of mapped trends within Jaguar Mining's tenements. This positions the entire area as a premier exploration district with significant Tier 1 district-scale gold potential.

Figure 5: Left: Ancient colonial-era excavations (highlighted in white) aligned over 15 km within Jaguar's tenements. Right: Interpretation of structural lineaments via satellite imagery (green dashed lines), highlighting multiple opportunities for mineralized zones.

Table 1: Drill intercepts

LOCAL	DHID	From	To	DownHole Interval (m)	ETW (m)	Gold Grade (g/t Au)	Composite	Type
Chamé	FCM001	46.65	62.00	15.35	15.35	0.44	15.35m @ 0.44 g/t	Composite
Chamé	FCM001	51.38	52.47	1.09	1.09	3.00	1.09m @ 3 g/t	incl.
Chamé	FCM001	60.57	62.00	1.43	1.43	1.86	1.43m @ 1.86 g/t	incl.
Chamé	FCM002	128.85	132.94	4.09	3.39	0.33	3.39m @ 0.33 g/t	Composite
Chamé	FCM002	128.85	130.00	1.15	0.95	0.64	0.95m @ 0.64 g/t	incl.
Chamé	FCM003	44.29	76.50	32.21	32.21	0.37	32.21m @ 0.37 g/t	Composite
Chamé	FCM003	44.29	51.00	6.71	6.71	1.15	6.71m @ 1.15 g/t	incl.
Chamé	FCM003	61.44	63.72	2.28	2.28	0.41	2.28m @ 0.41 g/t	incl.
Chamé	FCM003	73.37	76.50	3.13	3.13	0.62	3.13m @ 0.62 g/t	incl.
Chamé	FCM003	246.60	252.50	5.90	5.90	2.16	5.9m @ 2.16 g/t	Composite
Chamé	FCM003	248.50	250.00	1.50	1.50	8.10	1.5m @ 8.1 g/t	incl.
Chamé	FCM004	66.44	100.74	34.30	28.19	0.39	28.19m @ 0.39 g/t	Composite
Chamé	FCM004	72.00	73.00	1.00	0.82	2.37	0.82m @ 2.37 g/t	incl.
Chamé	FCM004	86.50	100.74	14.24	11.76	0.60	11.76m @ 0.6 g/t	Composite
Chamé	FCM004	86.50	90.70	4.20	3.47	1.00	3.47m @ 1 g/t	incl.
Chamé	FCM004	93.66	97.00	3.34	2.76	0.73	2.76m @ 0.73 g/t	incl.
Chamé	FCM005	94.47	96.00	1.53	1.53	0.84	1.53m @ 0.84 g/t	Composite
Chamé	FCM005	198.84	199.56	0.72	0.72	0.70	0.72m @ 0.7 g/t	Composite
Chamé	FCM005	266.81	273.00	6.19	6.19	0.62	6.19m @ 0.62 g/t	Composite
Chamé	FCM005	267.39	269.57	2.18	2.18	1.20	2.18m @ 1.2 g/t	incl.
Chamé	FCM006	122.11	125.00	2.89	2.76	0.23	2.76m @ 0.23 g/t	Composite
Chamé	FCM006	122.11	122.64	0.53	0.51	0.40	0.51m @ 0.4 g/t	incl.
Chamé	FCM007	83.10