First Phosphate Welcomes the Addition of Phosphate to the Critical Minerals List of the United States

Saguenay, Quebec--(Newsfile Corp. - November 10, 2025) - First Phosphate Corp.(CSE: PHOS) (OTCQX: FRSPF) (FSE: KD0)  ("First Phosphate" or the "Company") applauds the decision by the U.S. Secretary of the Interior, acting through the Director of the U.S. Geological Survey ("USGS"), to add "phosphate" to the United States' Final 2025 List of Critical Minerals.

https://www.usgs.gov/programs/mineral-resources-program/science/about-2025-list-critical-minerals

The United States now joins the countries of Canada and South Korea, the European Union and the provinces of Ontario and Quebec in recognizing phosphate as a critical mineral.

The US Secretary of the Interior indicated that the department made the determination to include phosphate on the Final 2025 List of Critical Minerals based on recommendations and expertise provided by the respective U.S. Departments of Energy, War, and Agriculture.

During the comment period provided by the USGS, First Phosphate submitted a full 15-page letter highlighting the critical defense and energy related implications of phosphate given to the rapid emergence of lithium iron phosphate ("LFP") batteries for energy storage, data centers, robotics, mobility and national security apparatus.

First Phosphate also reiterated the recent "Met" rating that it had received from the Defense Industrial Base Consortium for its White Paper on Securing North American Phosphate Supply for LFP Cathode Materials.

https://firstphosphate.com/dibc

First Phosphate's flagship Bégin-Lamarche Property in Saguenay-Lac-Saint-Jean, Quebec is one of North America's rare igneous phosphate resources, yielding high-purity phosphate with minimal impurities for production of cathode active material ("CAM") for LFP batteries.

First Phosphate has recently produced commercial-grade LFP 18650 battery cells using North American critical minerals:

https://firstphosphate.com/north-american-lfp-battery-cells

The high-purity phosphoric acid and iron powder for these LFP 18650 battery cells was produced using rare igneous anorthosite rock extracted from the First Phosphate Bégin-Lamarche property.

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About First Phosphate

First Phosphate (CSE: PHOS) (OTCQX: FRSPF) (TDG: KD0) (FSE: KD0) is a mineral development and cleantech company dedicated to building and onshoring a vertically integrated mine-to-market LFP battery supply chain for North America. Target markets include energy storage, data centers, robotics, mobility and national security. First Phosphate's flagship Bégin-Lamarche Property in Saguenay-Lac-Saint-Jean, Quebec is one of North America's rare igneous phosphate resources, yielding high-purity phosphate with minimal impurities.

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Forward-Looking Information and Cautionary Statement

This release includes certain statements that may be deemed "forward-looking information". Any statement that discusses predictions, expectations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as "expects", or "does not expect", "is expected", "anticipates" or "does not anticipate", "plans", "budget", "scheduled", "forecasts", "estimates", "believes" or "intends" or variations of such words and phrases or stating that certain actions, events or results "may" or "could", "would", "might" or "will" be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information. In particular, this press release contains forward-looking information relating to, among other things, the Company's plans for building and onshoring a vertically integrated mine-to-market LFP battery supply chain for North America. Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking statements include development and exploration successes, continued availability of capital and financing, and general economic, market or business conditions. These statements are based on a number of assumptions including, among other things, assumptions regarding general business and economic conditions; there being no significant disruptions affecting the activities of the Company or inability to access required project inputs; permitting and development of the projects being consistent with the Company's expectations; the accuracy of the current mineral resource estimates for the Company and results of metallurgical testing; certain price assumptions for P2O5 and Fe2O3; inflation and prices for Company project inputs being approximately consistent with anticipated levels; the Company's relationship with First Nations and other Indigenous parties remaining consistent with the Company's expectations; the Company's relationship with other third party partners and suppliers remaining consistent with the Company's expectations; and government relations and actions being consistent with Company expectations. Investors are cautioned that any such statements are not guarantees of future performance and actual results or developments may differ materially from those projected in the forward-looking statements. Accordingly, readers should not place undue reliance on the forward-looking information contained in this press release. The Company does not assume any obligation to update or revise its forward-looking statements, whether because of new information, future events or otherwise, except as required by applicable law. All forward-looking information contained in this release is qualified by these cautionary statements.

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