Mr. Jeff Ciachurski reports

GREENBRIAR ANNOUNCES CLOSING OF AMENDMENTS TO CAD $1.0 MILLION CONVERTIBLE DEBENTURE AND WARRANTS

Greenbriar Sustainable Living Inc., further to its news release dated June 24, 2026, has received acceptance from the TSX Venture Exchange for amendments to the terms of its outstanding $1.0-million unsecured convertible debenture originally issued on June 30, 2023.

The total proceeds of the debenture are $1-million, being the aggregate principal amount outstanding under the debenture. The total proceeds do not include any accrued interest. Any accrued and unpaid interest owing under the debenture may be settled in cash or, at the company's election, through a share-for-debt transaction. Any interest settled through a share-for-debt transaction will be based on the market price of the company's common shares at the time of settlement, in accordance with the policies of the exchange.

The company has amended the debenture to extend the maturity date and conversion period by two years, from June 30, 2026, to June 30, 2028, and to reduce the conversion price of the debenture from $1.25 per common share to $1 per common share, subject to adjustment in accordance with the terms of the debenture.

The aggregate principal amount of $1-million outstanding under the debenture is convertible into a maximum of one million common shares at the amended conversion price of $1 per common share, subject to adjustment in accordance with the terms of the debenture.

The debenture was originally issued pursuant to the company's private placement announced on June 22, 2023, and closed on July 6, 2023. The debenture bears interest at 12 per cent per annum and was issued together with 460,000 detachable common share purchase warrants. The debentureholder is an arm's-length party to the company, and no insider of the company holds the debenture or the warrants.

The company has also amended the expiry date of the warrants by extending the expiry date by two years, from June 30, 2026, to June 30, 2028. The exercise price of the warrants remains unchanged at $1.30 per common share, subject to adjustment in accordance with the terms of the warrants.

All other terms of the debenture and warrants remain unchanged. The amendments to the debenture and warrants have been accepted by the exchange and are effective on or about June 30, 2026.

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.

We seek Safe Harbor.