Saguenay-Lac-Saint-Jean, Québec - Newsfile Corp. - June 17, 2026 - First Phosphate Corp. (CSE: PHOS) (OTCQX: FRSPF) (OTCQX ADR: FPHOY) (FSE: KD0) ("First Phosphate" or the "Company") is pleased to announce that it has formalized international investment and offtake agreements under the Critical Minerals Resilience and Production Alliance (the "Alliance") at the 52^nd G7 Summit in Évian, France. Letters of interest: Within the framework of the Alliance, First Phosphate is also pleased to announce that it has received letters of interest ("LOIs") from export credit agencies, financial institutions and industrial partners:

1. LOI for up to CDN $275M guarantee from the Export and Investment Fund of Denmark ("EIFO") for the development of the First Phosphate Bégin-Lamarche mine. (signed March 30, 2026)
2. LOIs from the Italian Export Credit Agency ("SACE"), from Italy's National Promotional Institution, Cassa Depositi e Prestiti ("CDP"), and from the international growth partner for Italian companies ("SIMEST"), alongside the support of the Italian engineering group MAIRE ("MAIRE"), in relation to First Phosphate's phosphoric acid ("PA") plant at Port Saguenay to deploy Ballestra S.p.A (Italy) ("Ballestra") technology. (LOIs signed between May 26, 2026 - June 4, 2026)

Offtake Agreements:

1. Definitive offtake agreement with an international partner for a minimum of 200,000 tonnes per annum of phosphate concentrate from the Bégin-Lamarche mine. (signed January 5, 2026).
2. Definitive offtake agreement with an international partner for a minimum of 60,000 tonnes per annum of phosphoric acid to be produced by the phosphoric acid plant at Port Saguenay. (signed December 16, 2024)

"Canada has what the world wants, and we are delivering. By working with trusted allies through the Critical Minerals Resilience and Production Alliance, investments are being made, projects are coming online faster, and we are strengthening supply chains in Canada and beyond," said the Honourable Tim Hodgson, Canada's Minister of Energy and Natural Resources. "By advancing projects like the Bégin-Lamarche mine, we're securing the materials essential to the clean energy transition, creating good Canadian Jobs, and positioning Canada as a leader in an increasingly competitive global economy." To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/8917/301865_a30ad39e14f0489d_001full.jpg "These offtake and investment agreements announced under the Critical Minerals Resilience and Production Alliance at the 2026 G7 Summit demonstrate the strategic importance being assigned to establishing a secure, traceable and robust international supply chain for critical battery-grade phosphate material," stated John Passalacqua, CEO of First Phosphate. "We are proud to lead the G7 in the development of this clean, rare igneous phosphate material from Saguenay-Lac-St-Jean, Quebec into a downstream lithium iron phosphate ("LFP") battery supply chain for the G7 Alliance." To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/8917/301865_a30ad39e14f0489d_002full.jpg Qualified Person The scientific and technical information relating to First Phosphate contained in this press release has been reviewed and approved by Steeve Lavoie, P.Geo., Chief Geologist of First Phosphate, who is Qualified Person within the meaning of National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101"). About First Phosphate Corp. First Phosphate (CSE: PHOS) (OTCQX: FRSPF) (OTCQX ADR: FPHOY) (FSE: KD0) is a mineral exploration and development and clean technology company dedicated to building and reshoring a vertically integrated mine-to-market supply chain for the production of LFP batteries in North America. Target markets include energy storage, data centers, robotics, mobility, and national security. First Phosphate's flagship Bégin-Lamarche property, located in Saguenay-Lac-Saint-Jean, Québec, Canada, represents a rare North American igneous phosphate resource producing high-purity phosphate characterized by very low levels of impurities. About the Critical Minerals Resilience and Production Alliance The Critical Minerals Resilience and Production Alliance was launched by Prime Minister Carney in June 2025 at the 51^st G7 Leaders' Summit in Kananaskis, Alberta. It brings trusted countries together to diversify critical minerals supply, promote responsible development, and reduce market concentration. The Alliance helps critical minerals projects move from planning to production faster by connecting governments, investors, and companies unlocking financing; securing investment; and supporting offtake agreements with long-term buyers, reducing risk so that mining and processing projects can get built and deliver secure, reliable supply. About Export and Investment Fund of Denmark (EIFO) EIFO is...