San Lorenzo Gold Announces Further Assay Results from Salvadora Property

CALGARY, AB — May 8, 2026 — Leads & Copy — San Lorenzo Gold Corp. (TSXV: SLG) has announced further assay results from its drilling program at the Arco de Oro target on its Salvadora property in Chile's mega-porphyry belt.

The assay results are from Hole SAL 09-25 and partial results from SAL 10–25, which included 102.3 meters of 1.33 g/t gold. The drilling targeted the “NW extension" of the Arco de Oro trend and returned intercepts in porphyry-style mineralization.

Holes 9 and 10 on the NW extension represent a 3.9 km step-out from San Lorenzo’s previous drilling at Arco de Oro.

San Lorenzo’s VP of Exploration, Terence Walker, said the holes indicate a larger system within the Arco de Oro trend and that they are penetrating the upper layers of a gold-rich mineralized porphyry copper-gold system. He added that immediate follow-up drilling is warranted to delineate the intrusive complex discovered in SAL 09 and SAL 10-25.

San Lorenzo’s CEO, Al Kroontje, said the company elected to release the currently available assays from Hole SAL 10-25 immediately, given their significance. He noted that the results, particularly when viewed alongside Hole 9, confirm substantial porphyry mineralization and strengthen confidence in the broader system. A portion of Hole 10 assays remain outstanding at depths where intercepts were obtained in Hole 9.

Kroontje added that the new results at the NW extension, also referred to as the “San Juan” portion of the system, show larger-scale potential than previously considered.

Results from SAL 09 – 25 and partial results from SAL 10 – 25, holes drilled on the NW extension of the Arco de Oro trend, are presented in Tables 1 and 2.

Results for hole SAL 09-25, between a depth of 223 and 542 meters, were previously reported on March 2, 2026. Results above 223 meters and below 542 meters in SAL 09-25, and all results reported from SAL-10-25 in this release, are newly received.

The funding secured by San Lorenzo enabled management to expand exploration at Arco de Oro beyond the epithermal vein systems, which extend over 6 kilometers of strike. The program now includes testing of induced polarization (“IP”) anomalies, broadening San Lorenzo’s exploration approach.

Management believes the IP chargeability/resistivity features evident in San Lorenzo’s historic IP data, which were duplicated in last summer’s IP program in the NW extension area of Arco de Oro, likely indicate intrusive sources responsible for the epithermal systems’ creation. This view has been substantiated by the results of Holes SAL 09-25 and 10-25.

San Lorenzo is not yet in possession of assay results below 348 meters in hole SAL 10-25. Hole SAL 10-25 encountered similar mineralization as seen in hole SAL 09-25. In SAL 10-25, potassic alteration continued to strengthen and dominate towards the bottom of the hole, below currently received assay results with multi-directional pyrite-chalcopyrite rich veins within dioritic intrusives and dykes indicating multi-episodic mineralization events in a gold-rich porphyry copper-gold setting. In Hole 10-25, grades continued to improve with depth. Visual indications from deeper core indicate strong chalcopyrite rich mineralization with associated potassic alteration still evident at the bottom of the hole which terminated at a depth of 574 metres due to drilling rig limitations.

San Lorenzo expects assay results from the remaining holes drilled on Arco de Oro to be reported on a regular basis and is committed to providing stakeholders with regular updates as assay results are obtained.

San Lorenzo has finalized the permitting material for the upcoming Phase 7 drilling program at Salvadora. Construction and rig mobilization are expected to commence within approximately 30 days.

San Lorenzo is participating in the Metals Investor Forum being held today and tomorrow at the JW Marriott Parq in Vancouver. Management will be on hand to meet with shareholders, analysts, and investors to discuss the Corporation’s strategy and the Salvadora project. San Lorenzo’s CEO, Al Kroontje, will be presenting on a panel hosted by Eric Coffin of HRA Advisory.

The scientific and technical information in this release has been reviewed and approved by Terence Walker, M.Sc., P. Geo., the VP of Exploration of San Lorenzo.

Samples consisting of 50% of the HQ core are delivered to the ALS Laboratories in Copiapó by San Lorenzo staff for preparation which consists of drying and crushing to a 2 mm mesh and then pulverized. The sample material is then delivered to ALS’s facilities in Lima, Peru for gold analysis using the fire assay method. Samples also analysed by aqua-regia digestion to analyse for other elements including Ag and Cu. San Lorenzo notes that the correlation between sample intervals and true widths are unknown as the systems are still being modeled.

Drill collar data and individual assay results from each of the holes will be made available on San Lorenzo’s website.

San Lorenzo is focused on advancing its Salvadora property in Chile’s mega-porphyry belt. Drilling results at Salvadora have convinced management that several gold and copper enriched epithermal and/or porphyry style systems may be contained within the Salvadora property.

Source: San Lorenzo