Uranium One Mining Corp. Announces Closing of Non-Brokered Private Placement for Gross Proceeds of Approximately $3,008,401

Vancouver, BC – May 27, 2026 – TheNewswire - Uranium One Mining Corp. (formerly Vanguard Mining Corp.) (“ Uranium One ” or the “ Company ”) (CSE: UUU | OTCID: UUUFF | Frankfurt: SL51) is pleased to announce that it has closed its previously announced non-brokered private placement (the “ Offering ”) consisting of: (i) 4,911,333 non-flow-through units of the Company (each, an “ NFT Unit ”) at a price of $0.30 per NFT Unit for aggregate gross proceeds of $1,473,399.90; and (ii) 5,116,669 flow-through units of the Company (each, an “ FT Unit ”) at a price of $0.30 per FT Unit for aggregate gross proceeds of $1,535,000.70, for total aggregate gross proceeds of approximately $3,008,400.60.