Tocvan Announces New Surface Mineralization in Several Zones at Gran Pilar Gold-Silver Project

Expansion of Bojorquez Target and Discovery of New Zone 4 km North of Main Zone within Central Corridor, Exploration Ongoing

HERMOSILLO, MX / ACCESS Newswire / August 28, 2026 / Tocvan Ventures Corp. (the "Company" or "Tocvan") (CSE:TOC)(OTCQB:TCVNF)(WKN:TV3/A2PE64) is pleased to announce new surface exploration results outlining additional gold-silver mineralization across multiple zones at its 100%-owned Gran Pilar Gold-Silver Project in Sonora, Mexico.

Recent rock sampling has expanded the Bojorquez Target and identified a new mineralized zone approximately four kilometres north of the Main Zone within the emerging Central Corridor. Highlight rock samples returned values of up to 2.4 g/t Au and 67 g/t Ag, with copper values reaching 1.6% Cu associated with old mine workings hosted in a tourmaline breccia. The Central Corridor trend has now been traced over a strike length exceeding 1,000 metres on the same structural orientation as the Main Zone (Figure 1.). Sampling and mapping across the Central Corridor are ongoing with soil grids in progress.

Key Highlights

• Bojorquez Expansion: Additional sampling has extended the known surface footprint of the Bojorquez Target (previously outlined ~3 km east of the Main Zone), confirming continuity of gold-silver mineralization with strong pathfinder element support.

• New Central Corridor Zone: A newly defined zone located ~4 km north of the Main Zone along the Central Corridor returned anomalous to significant gold and silver values in rock chip samples. The mineralized trend extends over 1,000 metres in length and displays geological characteristics similar to the South Block and Main Zone.

• Rock Sample Results: Peak values of 2.4 g/t Au and 67 g/t Ag, along with copper up to 1.6% Cu related to historic mine workings in a tourmaline breccia. Samples also returned elevated arsenic, antimony, and other base-metal pathfinders consistent with the epithermal system at Gran Pilar.

• These results further demonstrate the district-scale potential of Gran Pilar, with multiple mineralized trends now defined across the property and remaining open for expansion.

The new Central Corridor zone lies along a structural trend interpreted from recent mapping, magnetic data, and surface geochemistry. Mineralization is hosted in andesitic volcanic rocks with quartz veining, silicification, hematite alteration, and localized brecciation, features analogous to those observed at the Main Zone and Mezquite target. Continuous sampling has outlined the corridor over more than 1,000 metres of strike, with mineralization remaining open along strike and untested at depth.

Notably, sampling near historic mine workings within a tourmaline breccia returned the highest copper values (up to 1.6% Cu) together with elevated gold and silver, highlighting the potential for polymetallic mineralization in structurally controlled zones.

Sampling at the expanded Bojorquez area continues to outline coherent gold-silver anomalies coincident with magnetic lows, reinforcing the potential for structurally controlled epithermal mineralization.

Figure 1. Target map of the Gran Pilar Project with recent surface sample highlights extending target to the east of the South Block and through the previously unsampled Central Corridor.

Chris Gordon, CEO of Tocvan, commented:

"These new surface results expand Bojorquez and open up an exciting new zone four kilometres north of the Main Zone in the Central Corridor. Returning rock samples up to 2.4 g/t gold and 67 g/t silver, with copper values as high as 1.6% associated with old mine workings in a tourmaline breccia, and the Central Corridor already defined over 1,000 metres of strike, further validates the multi-kilometre scale and polymetallic potential of the hydrothermal system at Gran Pilar. At the same time, our pilot facility is advancing rapidly, the heap leach pad is fully prepared for the liner and the processing plant in Hermosillo is near completion. With exploration success and development progress occurring in parallel, we are well positioned to deliver both near-term production and continued resource growth."

Surface exploration continues across the Central Corridor and other priority areas to refine targets for follow-up trenching and drilling. Results will be integrated with ongoing geophysical interpretation and the broader 2026 exploration program.

Sample	Easting	Northing	Au (g/t)	Ag (g/t)	As (ppm)	Cu (ppm)	Pb (ppm)	Sb (ppm)	Zn (ppm)
247574	618075	3148115	2.35	1.3	252	309	48	42	77
675934	619772	3144242	1.81	16.6	998	606	670	14	968
675914	620200	3145565	1.14	2.1	79	7	887	<5	42
521084	619558	3143758	1.03	3.3	532	257	115	5	463
675932	620144	3144187	0.98	0.9	87	6	127	13	9
521064	619483	3144740	0.88	5.3	211	373	64	9	322
675895	619950	3145515	0.77	4.9	244	101	711	10	355
247599	618182	3148524	0.75	9.2	429	112	43	21	9
675897	620185	3145620	0.70	26.5	220	35	2920	26	102
521077	620015	3144220	0.43	1.3	59	14	127	12	57
247511	618625	3147780	0.37	14.4	46	160	65	587	44
247530	619400	3148265	0.36	1.8	11	18	12	5	32
521032	620240	3145155	0.34	1.1	303	52	13	5	9
521079	619910	3144210	0.26	6.4	69	36	455	9	77
521070	620175	3144180	0.23	0.5	84	3	13	9	10
247559	617433	3148132	0.22	3.9	43	151	44	16	78
247508	618560	3147600	0.21	7.3	13	214	4	7	26
247580	618140	3148203	0.20	12.8	281	16250	122	10	176
675933	619860	3144220	0.16	2.7	662	102	175	13	84
521071	620230	3144155	0.15	0.5	72	23	13	5	8
521013	620016	3144300	0.15	0.6	140	4	10	6	61
521065	619500	3144700	0.15	0.9	25	98	44	<5	109
247513	618550	3147790	0.02	1.7	26	12250	14	6	159
247514	618555	3147780	0.01	1.3	21	13550	18	10	129