• First Phosphate reported an updated mineral resource estimate for the Bégin-Lamarche phosphate deposit, effective May 1, 2026.
• Pit-constrained resources at a 2.5% P2O5 cut-off: Measured 6 million tonnes at 7.7% P2O5; Indicated 198 million tonnes at 6% P2O5.
• Inferred pit-constrained resources total 89 million tonnes at 6.16% P2O5; the deposit remains open at depth.
• Metallurgical work points to 40.4% P2O5 apatite concentrate at 88% recovery; qualified for battery-grade phosphoric acid for LFP.
• Indicated resources rose 378% versus the initial September 9, 2024 estimate; project sits near road and hydro infrastructure, 70 km from Port of Saguenay.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. First Phosphate Corp. published the original content used to generate this news brief via Newsfile (Ref. ID: 202605260710NEWSFILECNPR____20260526_298831_1) on May 26, 2026, and is solely responsible for the information contained therein.