First Phosphate Corp. (CSE: PHOS) (OTCQX: FRSPF) (FSE: KD0) is pleased to announce that on, September 12, 2025, it closed a subsequent tranche of its non-brokered private placement financing, as further described in the Company’s news releases dated August 5, 2025 and August 25, 2025.

Under this tranche of the financing, the Company raised a total of $3.78 million through the issuance of 5,150,000 Flow-Through Shares for gross proceeds of $2.58 million and 2,415,000 Hard Dollar Units, comprised of 2,415,000 Common Shares and 1,207,500 Warrants, for gross proceeds of $1.21 million. In aggregate, under both tranches of the Offering, the Company has raised gross proceeds of $6.73 million through the issuance of 9,899,000 Flow-Through Shares for gross proceeds of $4.95 million, and through the issuance of 3,565,000 Hard Dollar Units for gross proceeds of $1.78 million.

Together with this Offering, the Company has raised to date a total of approximately $35.2 million in 9 management-led non-brokered private-placement financings since June 2022 of which approximately $14.9 million has been closed over the last 5 months.

The Company paid cash finder’s fees of and $36,000 issued 324,800 common shares and 396,800 Warrants to purchasers of Hard Dollar Units in the current tranche. In total, in connection with the Offering, the Company has paid $61,200 in cash finder’s fees, issued 543,120 compensation shares and advisory shares at a price of $0.50 per common share, and issued 665,520 Compensation Warrants, exercisable at a price of $0.50 per common share of the Company, until December 31, 2025, subject to an Accelerated Expiry Date. All securities issued under the Offering are subject to a four-month and one day statutory hold period in accordance with applicable securities laws. The Company intends to use the proceeds from the Offering as disclosed in the Company’s press release dated August 5, 2025. Capitalized terms used in this news release and not defined herein have the meanings given to them in the Company’s news release dated August 5, 2025. The Company intends to close one final tranche of the Offering on September 19, 2025.

This news release does not constitute an offer to sell or a solicitation of an offer to sell any of securities in the United States. The securities have not been and will not be registered under the United States Securities Act of 1933, as amended (the “U.S. Securities Act”) or any state securities laws and may not be offered or sold within the United States or to U.S. Persons unless registered under the U.S. Securities Act and applicable state securities laws or an exemption from such registration is available. Completion of the Offering is subject to certain conditions including, but not limited to, the receipt of all necessary approvals. There can be no assurance that any further securities will be sold under Offering.

About First Phosphate Corp.

First Phosphate is a mineral development company dedicated to producing high-purity phosphate for the LFP battery industry. The Company is committed to sustainable extraction and purification with a low anticipated carbon footprint. Its vertically integrated model connects phosphate mining directly into the supply chains of North American battery producers. First Phosphate’s flagship project, the Bégin-Lamarche Property in Saguenay-Lac-Saint-Jean, Quebec, contains rare igneous anorthosite rock that yields high-purity phosphate with minimal impurities.