Tocvan Intersects Three New Gold-Silver Zones at Gran Pilar Project Exploration Drilling; Provides Pilot Mine Development Update

EXPANDS SURFACE EXPLORATION PROGRAM

HERMOSILLO, MX / ACCESS Newswire / May 28, 2026 / Tocvan Ventures Corp. (the "Company" or "Tocvan") (CSE:TOC)(OTCQB:TCVNF)(WKN:TV3/A2PE64) is pleased to announce positive drill results from its ongoing 20,000-meter exploration program at the 100%-controlled Gran Pilar Gold-Silver Project in Sonora, Mexico. Three new mineralized zones have been identified in step-out exploration drilling, significantly expanding the known footprint of the system beyond the Main Zone. To date, Tocvan has completed over 6,200 meters of the fully funded 20,000-meter program. Results from 19 additional drill holes totaling more than 3,800 meters are pending and will be released as they become available. The program is focused on resource expansion, new zone discovery, and definition of high-grade feeder structures on 100% owned ground.

Pilot Program Update

Tocvan continues to advance its pilot mine development at Gran Pilar. The Company has finalized procurement of the pilot plant equipment and is on track for commissioning in 2026. Significant on-site infrastructure progress includes the installation of the field office, perimeter fencing, preparation of clays for the heap leach pad, and ongoing stockpiling of 100% owned material. Site preparation, including road upgrades and water management infrastructure, is complete. Bulk sampling and metallurgical test work continue. The pilot program is designed to process up to 50,000 tonnes of material and generate critical data for future permitting and feasibility studies.

Completed Tasks

• Long-term Community Agreement

• 10-year Pilot Facility Permit

• Water monitoring wells

• Condemnation holes

• Soil mechanics

• Land clearing, office and storage

• Perimeter fence (ongoing)

• Initial trenching and stockpiling (ongoing)

• Deposit for processing facility

• Clay-bed for heap leach pad

Upcoming Tasks

• Ongoing trenching and stockpiling

• Heap leach pad build

• Containment pond build

• Crushing and stacking

• Processing facility setup and testing

• Full leach operation for gold and silver recovery

• Reporting and analysis for next-stage testing and full-scale optimization

Drill Highlights (New Zones):

New Zone 1 (South Block El Mezquite Trend South): Hole JES-26-134 intersected 3.1 metres of 1.5 g/t Au and 25 g/t Ag from 27.5 metres depth (14 meters vertically from surface), including 1.5 metres of 2.4 g/t Au, 33 g/t Ag and 5,640 ppm As. Mineralization starts near surface and extends to 48.8 meters downhole depth, with anomalous mineralization averaging 0.15 g/t Au over 39.7 meters from 9.2 meters depth. This hole extends mineralization along El Mezquite Trend 1,000 meters south of initial Discovery hole JES-26-135, 1,700 meters from the Main Zone (see news release April 1, 2026).

New Zone 2 (South Block Mag High Target): Hole JES-26-139 returned five mineralized zones including 1.5 metres of 0.4 g/t Au and 23 g/t Ag from 125 metres depth, within an anomalous zone of 9.2 metres at 0.12 g/t Au, 5 g/t Ag and 274 g/t As. This represents the first significant mineralization in a previously untested structural corridor 1,100 metres east of the Main Zone.

New Zone 3 (South Block New Eastern Trend) Multiple mineralization intersections are reported in holes JES-26-141, 142 and 143. This represents the first drilling 2,000-meters northeast of the Main Zone on a new trend, 400 meters northeast of the El Mezquite discovery. These holes are also 1,500 meters north and on the same magnetic trend as new surface target, Bojorquez (see news release May 13, 2026). JES-26-141 returned anomalous gold mineralization and alteration from surface down to 39.7 meters, including 4.6 meters of 0.3 g/t Au from 1.5 meters depth and 1.5 meters of 0.5 g/t Au from 38.1 meters depth. JES-26-142 returned anomalous gold mineralization over 25.1 meters including 1.5 meters of 1.0 g/t Au from 36.6 meters and 3.1 meters of 0.4 g/t Au from 56.4 meters. JES-26-143 returned anomalous gold mineralization over 54.9 meters from 18.3 meters depth including, 1.5 meters of 0.4 g/t Au from 35.1 meters and 1.5 meters of 0.7 g/t Au from 67.1 meters.

Zones were discovered through aggressive step-out drilling targeting geophysical and surface geochemical anomalies.

"These early exploration successes at Gran Pilar, highlighted by the discovery of three new gold-silver zones, mark an outstanding start to our 2026 program," commented Brodie Sutherland. "While these initial drill results are not yet representative of the higher-grade structures we believe occur within the broader system, they are extremely encouraging given we are stepping out into entirely new areas with no prior drilling. The results clearly demonstrate that the mineralized footprint at Gran Pilar extends well beyond the Main Zone and validate our district-scale exploration model. As is typical in early-stage discovery drilling, the key objective at this stage is identifying the major structural corridors and alteration systems that can host stronger gold grades as we refine our targeting. With over 6,200 metres drilled to date and results pending from an additional 19 holes, we believe we are building significant momentum across the district."

"We are equally excited about the rapid progress on our pilot plant build, where the field office is now installed, perimeter fencing is going up, clays for the heap leach pad have been prepped, and stockpiling of 100%-owned material is well underway-all setting the stage for commissioning later this year and near-term pilot-scale production."

Surface Exploration Expanded

Concurrent with drilling, the Company has expanded its surface exploration program across the North and South Blocks. Over 400 new rock and soil samples have been collected, extending geochemical coverage across most of the South Block. Multiple high-priority targets have been identified, including a 1.2-kilometre-long gold-in-soil anomaly coincident with a strong magnetic low in the South Block. Follow-up mapping and geophysical interpretation are scheduled for Q3 2026 to refine additional drill targets.

Figure 1. South Block highlighting new target areas.

Table 1. Summary of Drillhole results in this news release. As this is first pass reconnaissance drilling, true drill widths are unknown at this time.