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SLG.V ·

Cerro Blanco Drilling Commencement and Credit Facility Closing

Financings Debt & Credit Facilities Exploration Programs

CERRO BLANCO DRILLING COMMENCEMENT AND CREDIT FACILITY CLOSING

CALGARY / October 17, 2025 / San Lorenzo Gold Corp. ("San Lorenzo" or the "Company") (TSXV: SLG and

OTC: SNLGF ) is pleased to advise that on October 11, 2025 , drilling commenced at the Cerro Blanco

porphyry target situated on San Lorenzo’s flagship Salvadora property in Chile . Drilling operations are

continuing on the first of 3 planned holes which will target strong geophysical anomalies identified in San

Lorenzo’s recently reported expanded induced polarization geophysical surveying program (see San

Lorenzo news release dated June 17, 2025). The Company intends to provide drilling updates, including

assay results, on an ongoing basis.

San Lorenzo is also pleased to advise that the previously reported second credit facility providing up to

and additional $1,000,000 of funding to the Company has received final TSX Venture Exchange approval

and has closed (see San Lorenzo news release dated August 6, 2025). Proceeds from the second credit

facility will be used to fund the recently commenced drilling program at Salvadora.

The second credit facility was provided by the same company (the “Lender”) that provided the initial

credit facility which is a company related to a director of the Company (see San Lorenzo news release

dated November 19, 2024).

Once fully drawn, a dvances under the second credit facility will automatically convert into a term loan

maturing on July 31, 2027 . The second credit facility bears interest at a rate of 8% per annum and is

convertible at the option of the Lender into common shares of the Company at a price of $0.35 per

common share until maturity. If converted, the Lender has agreed to a contractual hold period such that

the share certificate representing the common shares will bear a legend restricting the trading of such

shares for a period of 1 year from the date of their issuance.

No bonuses, finders fees or commissions were paid in respect of the second credit facility.

MI 61 -101 Considerations: As a company related to an insider of the Company participated in the

transaction, it was deemed to be a “related party transaction” as defined under Multilateral Instrument

61-101-Protection of Minority Security Holders in Special Transactions (“ MI 61 -101”). Neither the

Company, nor to the knowledge of the Company after reasonable inquiry, a related party had had

knowledge of any material information concerning the Company or its securities that has not been

generally disclosed. The second credit facility is exempt from the formal valuation and minority

shareholder approval requirements of MI 61-101 (pursuant to subsections 5.5(c) and 5.7(1)(b)) as it was

a distribution of securities for cash and neither the fair market value of the second credit facility, nor the

consideration received from related parties, exceeded $2,500,000. The second credit facility was

unanimously approved by the board of directors of the Company, excluding the director who is related to

the company providing the second credit facility, who abstained from voting. The Lender currently holds

50,000 common shares of the Company and holds no options. If the second credit facility is fully drawn

to the maximum permitted amount, and both the first and second credit facilities are converted in

accordance with their terms, a total of 7,857,143 common shares would be issued, which would represent

9.0 % of the then issued and outstanding common shares of the Company.

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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: [email protected]

Ph: + 56 9 5179 5902

Or:

Roger Blair or Jeff Wilson, Acuity Advisory Corp.

Email: [email protected]

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

Or:

Al Kroontje

Email: [email protected]

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 news

release.

Cautionary Note Regarding Forward-Looking Information

This news release may contain forward-looking information that involves substantial known and unknown risks and uncertainties,

most of which are beyond the control of San Lorenzo. All statements 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. 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.