File: '\\swfile\EmailIn\20260310 134429 Attachment SGRO - NR - Dykes Passing - March 10 2026.docx'

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For Immediate Release

SIERRA ANNOUNCES PASSING OF DIRECTOR

Surrey, B.C., March 10, 2026, Sierra Grande Minerals Inc. (the "Company" or "Sierra") (CSE: SGRO) (OTCQB: SIERF) (FSE: SRR) announces with deep sadness the passing of Mr. Shaun Dykes, a valued member of the Company's Board of Directors.

The Company wishes to extend its sincere condolences to Mr. Dykes' family and friends during this difficult time. His contributions and commitment to the Company were greatly appreciated, and he will be missed by his colleagues and the mining community alike.

Following this loss, the remaining Board of Directors for Sierra will consist of:

Sonny Janda

Daryl Ware-Lane

Jared Scharf

The Company's board and management remain committed to the advancement of Sierra's business objectives.

ON BEHALF OF THE BOARD

Sonny Janda, Director

sonny.janda@sierragrowth.com

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

Forward-Looking Information This news release includes certain statements that constitute "forward-looking information" within the meaning of applicable securities law. Forward-looking statements address future events and conditions and are necessarily based upon a number of estimates and assumptions. While such estimates and assumptions are considered reasonable by the management of the Company, they are inherently subject to significant business, economic, competitive and regulatory uncertainties and risks. Actual results may differ materially from those currently anticipated in such statements. Investors are cautioned that forward-looking statements are not guarantees of future performance or events and, accordingly are cautioned not to put undue reliance on forward-looking statements due to the inherent uncertainty of such statements.

File: Attachment SGRO - NR - Dykes Passing - March 10 2026.pdf

For Immediate Release

SIERRA ANNOUNCES PASSING OF DIRECTOR

Surrey, B.C., March 10, 2026, Sierra Grande Minerals Inc. (the "Company" or "Sierra") (CSE: SGRO) (OTCQB: SIERF) (FSE: SRR) announces with deep sadness the passing of Mr. Shaun Dykes, a valued member of the Company's Board of Directors. The Company wishes to extend its sincere condolences to Mr. Dykes' family and friends during this difficult time. His contributions and commitment to the Company were greatly appreciated, and he will be missed by his colleagues and the mining community alike. Following this loss, the remaining Board of Directors for Sierra will consist of:

dot Sonny Janda dot Daryl Ware-Lane dot Jared Scharf The Company's board and management remain committed to the advancement of Sierra's business objectives.

ON BEHALF OF THE BOARD Sonny Janda, Director sonny.janda@sierragrowth.com

Neither the Canadian Securities Exchange nor its Regulation Services Provider (as that term is defined in the policies of the Canadian Securities Exchange) accepts responsibility for the adequacy or accuracy of this release. Forward-Looking Information This news release includes certain statements that constitute "forward-looking information" within the meaning of applicable securities law. Forward-looking statements address future events and conditions and are necessarily based upon a number of estimates and assumptions. While such estimates and assumptions are considered reasonable by the management of the Company, they are inherently subject to significant business, economic, competitive and regulatory uncertainties and risks. Actual results may differ materially from those currently anticipated in such statements. Investors are cautioned that forward-looking statements are not guarantees of future performance or events and, accordingly are cautioned not to put undue reliance on forward-looking statements due to the inherent uncertainty of such statements.

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