Tocvan Confirms Gold Mineralization Along Entire 1,300-Metre El Mezquite Trend at Gran Pilar

HERMOSILLO, MX / ACCESS Newswire / September 10, 2026 / Tocvan Ventures Corp. (the "Company" or "Tocvan") (CSE:TOC)(OTCQB:TCVNF)(WKN:TV3/A2PE64) is pleased to announce new drill results from the El Mezquite trend at its 100%-owned Gran Pilar Gold-Silver Project in Sonora, Mexico. The latest drilling confirms gold mineralization along the 1,300-metre El Mezquite trend and includes hole JES-26-162, which returned 247 metres of anomalous gold mineralization.

The result builds on the Company's August 6, 2026 discovery hole JES-26-155, which intersected 215 metres of 0.6 g/t gold from 36.6 metres downhole, and the initial El Mezquite discovery hole JES-26-135, which returned 22.9 metres of 0.6 g/t gold from surface (see news releases dated August 6, 2026 and April 1, 2026). Together, these holes support a continuous mineralized corridor along the 1.3-kilometre El Mezquite trend, located approximately 1.6 to 1.9 kilometres east of the Main Zone and the planned 50,000-tonne pilot production facility, with existing road access.

Key Highlights

• Mineralization confirmed along the 1,300-metre El Mezquite trend. JES-26-162 returned 247 metres of anomalous gold mineralization, one of the longest gold-bearing intervals reported to date at Gran Pilar.
• JES-26-162: 247.05 m of 0.10 g/t Au and 2.61 g/t Ag from surface, including:
  • 6.10 m of 0.45 g/t Au and 5.68 g/t Ag, including 1.53 m of 1.50 g/t Au and 8.50 g/t Ag
  • 10.68 m of 0.43 g/t Au and 7.16 g/t Ag, including 3.05 m of 1.29 g/t Au and 17.80 g/t Ag
  • 19.83 m of 0.27 g/t Au and 5.37 g/t Ag, including 1.52 m of 1.04 g/t Au and 26.10 g/t Ag
  • 13.73 m of 0.29 g/t Au and 5.28 g/t Ag, including 1.52 m of 0.96 g/t Au and 22.90 g/t Ag
• Result follows discovery hole JES-26-155: 215.0 m of 0.6 g/t Au and 3 g/t Ag from 36.6 m, including high-grade intervals up to 16.0 g/t Au and 56.9 g/t Ag over 1.5 m.
• Initial El Mezquite discovery JES-26-135: 22.9 m of 0.6 g/t Au from surface, approximately 600 metres along trend from JES-26-155.
• El Mezquite remains open along strike and at depth and is hosted within a 1.3-kilometre magnetic anomaly associated with silicified hydrothermal breccia, pyrite, tourmaline, and increasing Zn-Pb-As indicators at depth.

Reported intervals are drilled widths. True widths are unknown but estimated to be in the range of 60-80% of drilled widths.

"These results confirm that El Mezquite is not a one-hole story." said Chris Gordon, Chief Executive Officer of Tocvan. "A 247-metre anomalous gold interval in JES-26-162, together with the 215-metre discovery in JES-26-155, demonstrates continuity along a 1.3-kilometre trend sitting less than two kilometres from our planned pilot facility. That combination of scale, proximity to infrastructure, and a clear path to first production is exactly what we want to see as Gran Pilar advances from explorer to near-term producer."

Brodie A. Sutherland, Executive Chair, added: "JES-26-162 is an important step-out confirmation hole. Anomalous gold over 247 metres tells us the hydrothermal system at El Mezquite has vertical and lateral continuity consistent with a district-scale gold-silver corridor. Our focus now is to tighten the geometry of the higher-grade shoots already seen in JES-26-155 and to keep stepping along the 1,300-metre trend."

Figure 1. Plan view map showing the new discovery zone relative to the Pilot Facility and Main Zone.

Figure 2. Long-section looking west (270 bearing) of the new gold-silver discovery along the El Mezquite trend. Reported intervals are drilled widths. True widths are unknown but estimated to be within the range of 60-80% of drilled widths. Dots on surface are gold results in soil samples, red (>90 ppb) and orange (>40 ppb) are strong indicators for mineralization. Soil samples up to 1,200 ppb or 1.2 g/t Au are found along the trend.

El Mezquite Trend

El Mezquite is a north-south to northeast-trending target in the South Block of Gran Pilar. Mineralization is associated with a 1,300-metre magnetic anomaly surrounded by strongly elevated gold-in-soil and rock-chip values. Geology logged in nearby holes includes a vertically extensive, strongly silicified hydrothermal breccia system with continuous pyrite and arsenopyrite with tourmaline, magnetic andesite dikes, and increasing sphalerite-galena indicators at depth. Drilling to date has established:

• near-surface mineralization in JES-26-135;
• a thick, continuous envelope with internal high-grade shoots in JES-26-155; and
• a 247-metre anomalous gold interval in JES-26-162 that supports continuity along the trend.

The Company is using these results to prioritize follow-up RC and core holes along strike and down-dip.

Next Steps

• Continue step-out and infill drilling along the 1,300-metre El Mezquite trend.
• Assay remaining pending metres from the 2026 drill program (11,276 m drilled so far, results for 4,511 m pending)
• Integrate El Mezquite into district-scale targeting with the Main Zone, the near-surface silver-gold zone east of the pilot facility, Bojorquez, and the Central Corridor.
• Advance the permitted 50,000-tonne heap-leach pilot facility toward first gold-silver doré targeted in Q4 2026.

Additional Drill Results

Results in this release are from nine reverse-circulation holes and one core hole. Together with previously reported JES-26-135 and JES-26-155, they support gold-silver mineralization along the El Mezquite corridor and show both a broad low-grade envelope and discrete higher-grade shoots.

JES-26-163 was drilled as a northern step-out along the trend and returned multiple mineralized zones over more than 160 metres of hole length. From surface the hole intersected 23.15 m of 0.17 g/t Au and 5.96 g/t Ag, including a 0.60 m interval of 0.46 g/t Au and 48.60 g/t Ag and 1.25 m of 0.72 g/t Au and 7.30 g/t Ag. Deeper in the hole, mineralization included 5.65 m of 0.24 g/t Au from 79.20 m, 3.40 m of 0.93 g/t Au and 2.45 g/t Ag from 109.50 m (including 1.60 m of 1.65 g/t Au), 6.25 m of 0.34 g/t Au from 125.85 m, and a broader 16.65 m of 0.44 g/t Au and 7.37 g/t Ag from 145.80 m, including 4.15 m of 1.03 g/t Au and 19.55 g/t Ag. The combination of near-surface silver-gold and a thicker mid-hole gold-silver zone makes JES-26-163 an important strike confirmation hole north of JES-26-155 and JES-26-162.

JES-26-156 intersected a broad anomalous envelope of 83.88 m grading 0.11 g/t Au and 0.95 g/t Ag from 10.68 m, including 6.10 m of 0.57 g/t Au and 5.98 g/t Ag. The result is consistent with a continuous, lower-grade halo surrounding higher-grade shoots along the trend.

JES-26-159 returned 22.88 m of 0.23 g/t Au and 2.09 g/t Ag from 6.10 m, including 12.20 m of 0.38 g/t Au and 3.03 g/t Ag and a high-grade 1.53 m interval of 2.02 g/t Au and 11.40 g/t Ag. The hole supports near-surface mineralization in the central part of the corridor.

JES-26-160 intersected 41.18 m of 0.12 g/t Au and 0.61 g/t Ag from 9.15 m, including 1.53 m of 1.17 g/t Au and 3.50 g/t Ag and a second 1.53 m interval of 0.56 g/t Au. The hole adds another near-surface anomalous interval on the same part of the trend as JES-26-156 and JES-26-159.

JES-26-161 was collared immediately adjacent to JES-26-162 on a different azimuth and dip. It returned 10.68 m of 0.33 g/t Au and 6.30 g/t Ag from 22.88 m, including 1.50 m of 1.98 g/t Au and 7.20 g/t Ag, and a deeper 3.05 m interval of 0.39 g/t Au from 236.38 m. Together with the 247-metre anomalous interval in JES-26-162, the pair indicates the hydrothermal system has both lateral and vertical continuity at this location.

JES-26-158 returned a narrow interval of 1.53 m of 1.00 g/t Au and 1.40 g/t Ag from 62.53 m. JES-26-164 intersected two 1.53 m intervals of 0.48 g/t Au and 0.44 g/t Au. JES-26-165 returned 1.53 m of 0.21 g/t Au. JES-26-157 recorded no significant values. These holes help define the margins of the mineralized corridor and will be used to refine follow-up targeting.

The Company is using the new results to prioritize infill and step-out RC and core holes along strike and down-dip of the higher-grade shoots already defined in JES-26-155, JES-26-162 and JES-26-163.

Table 1. Summary of Results Intervals are reported as drilled widths. Reported intervals are drilled widths. True widths are unknown but estimated to be within the range of 60-80% of drilled widths

Collar ID	From (m)	To (m)	Length (m)	Au (g/t)	Ag (g/t)
JES-26-156	10.68	94.55	83.88	0.11	0.95
including	71.68	77.78	6.10	0.57	5.98
JES-26-157	NSV
JES-26-158	62.53	64.05	1.53	1.00	1.40
JES-26-159	6.10	28.98	22.88	0.23	2.09
including	6.10	18.30	12.20	0.38	3.03
including	15.25	16.78	1.53	2.02	11.40
JES-26-160	9.15	50.33	41.18	0.12	0.61
including	13.73	15.25	1.53	1.17	3.50
and	48.80	50.33	1.53	0.56	1.40
JES-26-161	22.88	33.55	10.68	0.33	6.30
including	32.05	33.55	1.50	1.98	7.20
also	236.38	239.43	3.05	0.39	0.25
JES-26-162	0.00	247.05	247.05	0.10	2.61
including	61.00	67.10	6.10	0.45	5.68
including	64.05	65.58	1.53	1.50	8.50
and	79.30	89.98	10.68	0.43	7.16
including	86.93	89.98	3.05	1.29	17.80
and	129.63	149.45	19.83	0.27	5.37
including	147.93	149.45	1.52	1.04	26.10
and	233.33	247.05	13.73	0.29	5.28
including	239.43	240.95	1.52	0.96	22.90
JES-26-163	0.00	23.15	23.15	0.17	5.96
including	4.45	5.05	0.60	0.46	48.60
and	12.00	13.25	1.25	0.72	7.30
also	79.20	84.85	5.65	0.24	1.97
including	84.25	84.85	0.60	0.95	8.20
also	100.15	100.75	0.60	0.78	6.40
and	109.50	112.90	3.40	0.93	2.45
including	111.30	112.90	1.60	1.65	3.30
also	125.85	132.10	6.25	0.34	3.23
including	130.50	132.10	1.60	0.91	4.00
also	145.80	162.45	16.65	0.44	7.37
including	152.30	156.45	4.15	1.03	19.55
JES-26-164