Onyx Gold Strengthens Munro-Croesus Land Position with Major New Acquisition in Timmins, Ontario Page 1

Vancouver, British Columbia–(Newsfile Corp. – September 9, 2024) – Onyx Gold Corp. (TSXV: ONYX) (OTCQX: ONXGF) ( “Onyx” or the “Company“) is pleased to announce that it has completed the acquisition of a portfolio of real estate (the “Property“) from an independent party (the “Supplier“) located in the Matheson area, east of Timmins, Ontario.

Matheson’s portfolio, consisting of four (4) properties (Highway, Tax, Hewitt and Munro), augments the Munro-Croesus property (“Munro-Croesus” or the “Project“) up to 10,411 ha (104 km²), an increase of 12% (Figure 1). This adds substantial exploration potential to this relatively unexplored but highly promising portion of the Timmins Gold Camp. The properties are adjacent to or adjacent to Munro-Croesus and host multiple high-grade and bulk-tonnage gold deposits.