Aris Mining Updates Early Warning Report in Respect of Seasif Exploration

Aris Mining Corporation (Aris Mining or the Company) (TSX: ARIS; NYSE: ARIS) announces that on August 4, 2026, it sold 15,500,000 common shares (Shares) of Seasif Exploration Inc. (TSXV: SAF.H) (Seasif) through a privately brokered transaction at a price of C$0.005 per Share, for aggregate gross proceeds of C$77,500.

Early Warning Disclosure

Immediately prior to the sale, Aris Mining owned 29,910,588 Shares, representing approximately 20.4% of the issued and outstanding Shares. Since July 17, 2020, the date of Aris Mining’s most recent early warning report in respect of Seasif, Aris Mining’s security holding percentage decreased from 25.9% to approximately 20.4% immediately before the sale, solely as a result of Shares issued from treasury by Seasif.

The Shares sold by Aris Mining represent approximately 10.6% of the issued and outstanding Shares on a non-diluted basis. Following completion of the sale, Aris Mining beneficially owns and controls 14,410,588 Shares, representing approximately 9.8% of the issued and outstanding Shares on a non-diluted basis. Aris Mining does not own or control any other securities of Seasif.