Greencastle Announces Acquisition of Common Shares of Highrock Resources

Toronto, September 22, 2023 - Greencastle Resources Ltd. (TSXV: VGN) ("Greencastle" or the "Company") announces the Company has acquired an additional 1,400,000 common shares (each, a "Common Share") in the capital of Highrock Resources Ltd. ("Highrock") at a price of $0.01 per Common Share, pursuant to a share purchase agreement between the Company and a third party. Prior to the acquisition of the Common Shares, the held 2,500,000 Common Shares, representing approximately 18.78% of the issued and outstanding Common Shares in the capital of Highrock on an undiluted and partially diluted basis. Upon completion of the acquisition of the Common Shares, the Company will hold 3,900,000 Common Shares, representing approximately 29.31% of the issued and outstanding Common Shares in the capital of Highrock on an undiluted basis.

Depending on market and other conditions, or as future circumstances may dictate, the Company may from time to time increase or decrease its holdings of Common Shares or other securities of the Company. A copy of the early warning report will be available on Highrock's issuer profile on SEDAR+ at www.sedarplus.ca.

The Transaction was conducted in reliance on the "private agreement exemption" in section 4.2 of National Instrument 62-104 - Take-Over Bids and Issuer Bids ("NI 62-104") and as a result was exempt from the take-over bid requirements in Part 2 of NI 62-104.

For additional information, please visit www.greencastle.ltd or contact:

Anthony Roodenburg
Chief Executive Officer
Tel.: (437)-677-5075

Notice regarding Forward-Looking Information

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