Graphite One Announces Closing of Public Offering for C$35 Million

February 18, 2026 – Vancouver, British Columbia – Graphite One Inc. (TSX‐V: GPH; OTCQX: GPHOF) (“Graphite One”, “G1” or the “Company”) is pleased to announce that it has closed its previously announced marketed public offering, pursuant to which the Company sold 20,002,000 units (“Units”) for aggregate gross proceeds of C$35 million (the “Offering”), which includes the full exercise of the agents’ option. The Offering was conducted by a syndicate of agents, led by BMO Capital Markets (the “Agents”).

Each Unit consists of one common share of the Company (a “Common Share”) and one common share purchase warrant of the Company (a “Warrant”), at a price of C$1.75 per Unit. Each Warrant entitles the holder to acquire one Common Share at a price of C$2.25 per share for a period of 36 months following the date hereof.

The Offering was made pursuant to a prospectus supplement (the “Prospectus Supplement”) dated February 11, 2026 to the Company’s existing Canadian base shelf prospectus filed on January 20, 2026 and in the United States on a private placement basis pursuant to exemptions from the registration requirements of the United States Securities Act of 1933, as amended (the “U.S. Securities Act”), and in certain other jurisdictions outside of Canada and the United States.