File: '\\swfile\EmailIn\20260430 134654 Attachment 04-30-26 Sierra PP Update.docx'

SIERRA GRANDE MINERALS PROVIDES UPDATE ON NON-BROKERED PRIVATE PLACEMENT

Mr. Sonny Janda reports

Sierra Grande Minerals Inc. (the "Company" or "Sierra") (CSE: SGRO) (OTCQB: SIERF) (FSE: SRR) is pleased to provide an update regarding its previously announced non-brokered private placement (the "Offering"), as detailed in the Company's news release dated February 26, 2026.

The Company announces that it is extending the anticipated closing date of the Offering to May 30, 2026, to allow additional time for interested parties to complete their subscriptions. All other terms of the Offering remain as previously disclosed.

The Offering consists of the sale of up to 20,000,000 units (the "Units") of the Company at a price of $0.05 per Unit for gross proceeds of up to $1,000,000. Each Unit will consist of one common share of the Company and one common share purchase warrant (a "Warrant"). Each Warrant will entitle the holder to purchase one additional common share at a price of $0.065 for a period of 24 months from the date of issuance. All securities issued pursuant to the offering will be subject to a statutory hold period of four months and one day from the date of issuance in accordance with applicable Canadian securities laws.

The closing of the offering is subject to certain conditions, including, but not limited to, the receipt of all necessary approvals, including the conditional approval of the Canadian Securities Exchange. The company may pay finders' fees in connection with the offering, consisting of cash commissions and/or finders' warrants, as permitted by applicable securities laws and the policies of the Canadian Securities Exchange.

Certain insiders of the company may participate in the offering. Participation by insiders will constitute a related-party transaction within the meaning of Multilateral Instrument 61-101 (Protection of Minority Security Holders in Special Transactions). The company expects such participation to be exempt from the formal valuation and minority shareholder approval requirements pursuant to sections 5.5(a) and 5.7(1)(a) of MI 61-101 as neither the fair market value of the securities issued, nor the consideration paid by insiders will exceed 25 per cent of the company's market capitalization.

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