File: Attachment GRB - November 25, 2025.pdf

Greenbriar Sustainable Living Inc. Greenbriar Capital Holdco Inc. Greenbriar Capital (US) LLC

632 Foster Avenue, Coquitlam, British Columbia, Canada V3J 2L7 Phone: 949.903.5906 Fax: 604.608.9572 www.greenbriarliving.com

NEWS RELEASE

Greenbriar Announces Extension of Warrants

November 25, 2025 Trading Symbol: TSX Venture Exchange: GRB

US OTC Market: GEBRF

Scottsdale, Arizona, November 25, 2025 - Greenbriar Sustainable Living Inc. announces that it intends to extend the expiry date on 577,000 share purchase warrants issued by the Company on November 29, 2022 as part of a private placement transaction with warrants exercisable at $1.50 per warrant and expiring November 29, 2025. This will now be extended to an expiry date of November 29, 2027. All other terms and conditions of the warrants remain unchanged. The warrant extension is subject to the acceptance by the TSX Venture Exchange.

About Greenbriar Sustainable Living Inc.

Greenbriar is a leading developer of sustainable real estate and renewable energy. With long-term, high impact projects and led by a successful industry-recognized operating and development team, Greenbriar targets deep valued assets directed at accretive shareholder value.

ON BEHALF OF THE BOARD OF DIRECTORS

Jeffrey J. Ciachurski Chief Executive Officer and Director Phone: 949.903.5906

The TSX Venture Exchange has not reviewed and does not accept responsibility for the accuracy or adequacy of this release. Neither the TSX Venture Exchange nor its Regulation Service Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

This news release includes "forward-looking statements" and "forward-looking information" within the meaning of Canadian securities laws and United States securities laws (together, "forward-looking statements"). All statements included in this news release, other than statements of historical fact, are forward-looking statements including, without limitation, statements with respect to the closing of the Private Placement, the issuance of Common Shares and Warrants, and the approval of the Private

Placement by the TSX Venture Exchange. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as "anticipate", "believe", "plan", "estimate", "expect", "potential", "target", "budget", "propose" and "intend" and statements that an event or result "may", "will", "should", "could" or "might" occur or be achieved and other similar expressions and includes the negatives thereof.

"Greenbriar Capital Corp. was recognized as a TSX Venture 50trademark company in 2014 and 2023. TSX Venture 50 is a trade-mark of TSX Inc. and is used under license."

Toronto Venture Exchange Symbol: GRB | US OTC Symbol: GEBRF

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Forward-looking statements are based on a number of assumptions and estimates that, while considered reasonable by management based on the business and markets in which the Company operates, are inherently subject to significant operational, economic, and competitive uncertainties, risks and contingencies. These include assumptions regarding, among other things: general business and economic conditions. There can be no assurance that forward-looking statements will prove to be accurate and actual results, and future events could differ materially from those anticipated in such statements. Important factors that could cause actual results to differ materially from the Company's expectations include those described under the heading "Risks and Uncertainties" in the Company's most recently filed MD&A (a copy of which is available under the Company's SEDAR profile at www.sedarplus.ca). The Company does not undertake to update or revise any forward-looking statements, except in accordance with applicable law.

"Greenbriar Capital Corp. was recognized as a TSX Venture 50trademark company in 2014 and 2023. TSX Venture 50 is a trade-mark of TSX Inc. and is used under license."

Toronto Venture Exchange Symbol: GRB | US OTC Symbol: GEBRF

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