Effective at the opening of Tuesday, Sept. 2, 2025, the common share purchase warrants of the company will commence trading on the TSX Venture Exchange. The company is classified as a gold exploration company.

Corporate jurisdiction:  British Columbia

Capitalization:  14,784,554 warrants, authorized by the warrant indenture dated Aug. 22, 2025, of which up to 23 million warrants are authorized for issuance

Transfer agent:  Computershare Trust Company of Canada

Trading symbol:  GPH.WT (new)

Cusip No.:  38871F 13 6 (new)

Each warrant entitles the holder thereof to purchase one common share of the company at an exercise price of $1.10 per share at any time until Aug. 22, 2027.

The warrants were issued pursuant to the company's listed-issuer financing exemption private placement announced on July 23, 2025. For more information, refer to the company's news releases dated Aug. 18, 2025, Aug. 22, 2025, and Aug. 28, 2025.