San Lorenzo Provides Drilling Update from Cerro Blanco Target, Salvadora Project, Chile

(TheNewswire)

CALGARY TheNewswire - November 3, 2025 - San Lorenzo Gold Corp. (" San Lorenzo " or the " Company ") (TSXV: SLG,OTC:SNLGF and OTC: SNLGF) is pleased to provide an update on drilling operations at its Cerro Blanco porphyry target - situated on San Lorenzo's flagship Salvadora property in Chile.

The first HQ diamond drill hole in the current drill campaign was completed to a depth of 485 metres on October 29, 2025. The hole tested the strong chargeability feature identified during San Lorenzo's May 2025 induced polarization ("IP") geophysical survey program, as reported in the Company's news release dated June 17, 2025 .

Initial observations of the first hole (SAL 04-25) are that drilling intersected mineralization which correlated well with the IP chargeability anomaly. The nature and intensity of the mineralization is comparable to what was observed in San Lorenzo's first Cerro Blanco drill hole (SAL-01-24) that intersected 153.5 metres grading 1.04 g/t gold, 1.0 g/t silver, and 0.05% copper and included 3.8 metres grading 12.78 g/t gold, 6.5 g/t silver, and 0.51% copper as reported in the Company's news release dated March 3, 2025 .

Commenting on the correlation between mineralization and IP chargeability/resistivity anomalies, Terence Walker, San Lorenzo's VP of Exploration stated: "We are pleased that IP geophysics continues to be a useful exploration tool for drill target delineation at Cerro Blanco, and indeed, over the Salvadora property generally. We look forward to continued testing of additional high chargeability IP geophysical anomalies that have already been identified on numerous targets areas within the Salvadora property.".

Setup of the drill to the second Cerro Blanco location has been completed.  Assay results from the first hole and additional information related to the current drill program will be reported as available.

Qualified Person

Terence Walker, a "Qualified Person" for purposes of NI 43-101, has reviewed and approved the contents of this news release.

New Orleans Investment Conference

Further to San Lorenzo's news release dated October 30, 2025, San Lorenzo wishes to clarify that management will be attending, but not presenting at, the New Orleans Investment Conference.

About San Lorenzo

San Lorenzo is focused on advancing its flagship Salvadora property located in Chile's mega-porphyry belt.  Results obtained from prior drilling programs conducted on 4 different targets have convinced management that several significant gold and copper enriched epithermal and porphyry style systems are contained within the Salvadora property.

For further information, please contact:

Terence (Terry) Walker, VP Exploration

Email: twalker@goldenrock.cl

Ph: + 56 9 5179 5902

Or:

Roger Blair or Jeff Wilson, Acuity Advisory Corp.

Email: info@acuityadvisorycorp.com

Ph: +1 604 351 0025 or +1 604 837 5440

Or:

Al Kroontje

Email: al@slgold.ca

Ph: +1 403 607 4009

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Cautionary Note and Forward-Looking Information

Readers are cautioned that visual observations of drill core are not reliable – assaying is required to provide accurate information.

This news release contains forward-looking information and observations that involve substantial known and unknown risks and uncertainties, most of which are beyond the control of San Lorenzo.  All statements or observations included herein other than statements of historical fact are forward-looking information. Such forward-looking information involves various risks and uncertainties. There can be no assurance that such information will prove to be accurate, and actual results and future events could differ materially from those anticipated in such information or observation. Any forward-looking statements are made as of the date of this release and, other than as required by applicable securities laws, San Lorenzo does not assume any obligation to update or revise them to reflect new events or circumstances.

Copyright (c) 2025 TheNewswire - All rights reserved.

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