Sonoro Intersects 1.13 g/t Au over 19.81 Meters at Historical El Batamote Mine and Expands Mineralization at Diana with 0.82 g/t Au over 50.3 Meters

Sonoro Gold Corp. (SGO) reported 26 new reverse-circulation holes from Cerro Caliche, comprising 21 at Diana and 5 at El Batamote, as part of a 50,000 m program. Total drilling to date stands at 104 RC holes for 21,345.12 m. All 26 new holes reportedly returned gold above the 0.13 g/t Au reporting cutoff, with mineralization starting within the first 30 m downhole in 22 holes. The cutoff is a reporting cutoff, not an economic cutoff.

Diana holes were step-outs and deeper tests around the previously reported SCR-387 and SCR-391 high-grade intervals. Step-outs were collared roughly 74–245 m east/southeast of SCR-387. Key reported Diana intervals include:

• SCR-404: 50.30 m @ 0.823 g/t Au, including 1.52 m @ 9.372 g/t Au
• SCR-422: 50.29 m @ 0.513 g/t Au, including 6.09 m @ 2.038 g/t Au
• SCR-423: 85.35 m @ 0.333 g/t Au
• SCR-399: 9.15 m @ 1.286 g/t Au, including 4.57 m @ 2.366 g/t Au

Lower-grade Diana holes include:

• SCR-421: 21.34 m @ 0.279 g/t Au
• SCR-416: 21.34 m @ 0.393 g/t Au
• SCR-415: 16.77 m @ 0.333 g/t Au
• SCR-417: 21.34 m @ 0.393 g/t Au
• SCR-418: 32.00 m @ 0.347 g/t Au

Deep Diana tests were short and low grade: SCR-402 returned 3.05 m @ 0.93 g/t Au at 190.50–193.55 m; SCR-404 returned 1.53 m @ 1.114 g/t Au at 92.96–94.49 m. These confirm gold at depth but not continuity of a high-grade shoot.

El Batamote, about 1.2 km west-northwest of Diana and roughly 2 km north of the proposed PEA open pit, returned five mineralized holes. Highlights include:

• SCR-406: 19.81 m @ 1.127 g/t Au and 15.1 g/t Ag, including 1.52 m @ 3.603 g/t Au and 58.5 g/t Ag, and 4.57 m @ 2.350 g/t Au and 12.7 g/t Ag
• SCR-409: 15.24 m @ 0.713 g/t Au and 10.1 g/t Ag, including 3.04 m @ 1.769 g/t Au and 28.4 g/t Ag
• SCR-408a: 4.58 m @ 1.089 g/t Au and 8.5 g/t Ag

True widths are estimated at 60%–90% of drilled interval length. Grades are uncut. The results are outside the current mineral resource estimate and PEA mine plan.

QA/QC disclosure names Bureau Veritas, fire assay with atomic absorption finish, aqua regia/ICP multi-element analysis, systematic blanks/standards/duplicates, and QP Stephen Kenwood, P.Geo. No significant QA/QC issues were reported.

Sonoro Gold Corp. (SGO) is a near-development explorer and developer with no current revenue, a preliminary economic assessment (PEA), and permitting work underway. The company’s equity value stands at approximately C$65 million based on a share price of C$0.15, a valuation context that informs how materiality is judged against the deposit’s confidence category.

New drill holes are located outside the current mineral resource estimate (MRE) and PEA mine plan. While these results can support a future resource update, the release contains no tonnage or grade updates, no metallurgical results, and no changes to the PEA’s assumptions, which include a US$224 million after-tax NPV8, a 50% internal rate of return (IRR), US$83 million in initial capital expenditure, and US$1,902/oz all-in sustaining costs (AISC).

Historical results on the same Diana corridor have shown higher grades. Hole SCR-387 returned 28.95 m @ 2.598 g/t Au (about 75.2 gm), and SCR-391 returned 32.00 m @ 1.846 g/t Au (about 59.1 gm). The best result in the current release, SCR-404, returned 0.823 g/t Au over a wider interval, totaling about 41.4 g*m. This new intersection is wider but lower grade and lower in gram-metres compared to the prior anchor holes.

The stock price was C$0.18 on 2026-10-01 when the higher-grade Diana results were released and C$0.15 on 2026-11-06.

El Batamote, a genuine new assayed area located about 2 km north of the proposed pit, supports the land-acquisition thesis. However, five holes returning 0.3–1.1 g/t Au over 4.6–19.8 m do not establish a new high-grade centre.

Sonoro Gold Corp. (TSXV: SGO) is a TSXV-listed exploration and development company focused on the Cerro Caliche gold-silver project in Sonora, Mexico, and the exploration-stage San Marcial project. Cerro Caliche serves as the company’s flagship asset. The deposit is a low-sulphidation epithermal gold-silver system being advanced as an open-pit, heap-leach operation.

An April 2026 preliminary economic assessment (PEA) outlines a 10-year operation at a throughput of up to 16,000 tonnes per day. The study projects an initial capital expenditure of US$83 million, an after-tax net present value at an 8% discount rate (NPV8) of US$224 million, and an after-tax internal rate of return (IRR) of 50% based on gold prices of US$3,500/oz. The assessment estimates all-in sustaining costs (AISC) of US$1,902/oz AuEq, with metal recoveries of 72% for gold and 27% for silver.

The current mineral resource estimate (MRE) defines 51.8 million tonnes of Measured and Indicated resources at 0.37 g/t Au, plus 8.8 million tonnes of Inferred resources at 0.33 g/t Au. This totals approximately 6.23 million ounces of gold-equivalent (AuEq) in the M&I category and 1.04 million ounces of AuEq Inferred. The PEA is based on approximately 30% of known mineralized zones on the original 1,350-hectare property.

Sonoro Gold has substantially expanded its land package in 2026 through concession acquisitions, increasing the project footprint to roughly 8,600–9,000 hectares. The Diana and El Batamote properties are located on recently acquired ground and are not included in the current MRE or the PEA mine plan.

San Marcial is an earlier-stage gold-silver exploration project located approximately 30 km southwest of Cerro Caliche. Management has discussed a potential spin-out of the asset, but no transaction has been announced in this release.

Prior-period financial context not disclosed in today’s release indicates that Sonoro Gold held C$12.28 million in cash as of Q2-2026, with total assets of C$40.70 million and total liabilities of C$2.79 million. The company reported 431.94 million shares outstanding and a H1-2026 net loss of C$3.85 million. The company currently generates no revenue and relies on equity financing.