Marimaca Copper Corp.

Marimaca Copper Corp. is pleased to announce that its Chilean subsidiary, Marimaca NewCo Limitada , has received the formal Resolución de Calificación Ambiental for its Marimaca Oxide Project , located in the low coastal cordillera of the Antofagasta region of Chile. The RCA represents the formal approval of the Company's Declaración de Impacto Ambiental submission made in December 2024 and marks another strategic step [...]

It is with great sadness that Marimaca Copper Corp. announces the sudden passing of Mr. Colin Kinley, Director of the Company. The Board and Company express their sincere condolences to Karen, Cooper, and Claire, their extended family and friends. Colin joined Marimaca as a Director in 2016, became Chairman from 2017-2018, and was most recently Chair of the Audit Committee. He was a well-respected member of the Board [...]

Marimaca Copper Corp. announces it has filed the Feasibility Study technical report for the Marimaca Oxide Deposit project located in the Antofagasta Region, Chile . The Report was prepared in accordance with National Instrument 43-101 standards of Disclosure for Mineral Projects. The Report supports the disclosure made in the Company's news release dated August 25, 2025 announcing the results of the Feasibility Study [...]

Marimaca Copper Corp. is pleased to announce the closing of the previously announced brokered placement in Australia and select other jurisdictions, excluding Canada . Pursuant to the closing of the Placement, the Company issued 8,247,423 Chess Depositary Interests each at a price of A$9.70 for gross proceeds of approximately A$80,000,000 or approximately C$72,080,000. Net proceeds from the Placement will be used for [...]

Marimaca Copper Corp. is pleased to announce that it has secured binding commitments for a brokered placement in Australia and select other jurisdictions, excluding Canada, of 8,247,423 new Chess Depositary Interests of the Company at a price of A$9.70 per CDI for gross proceeds of approximately A$80,000,000 or approximately C$72,080,000 . The Placement was strongly supported by both new institutional and sophisticated [...]

Marimaca Copper Corp. announces that further to the previously announced best-efforts brokered placement in Australia and select other jurisdictions outside of Australia, except for Canada, the Company will issue an aggregate of 8,247,423 Chess Depositary Interests at a price of A$9.70 per CDI for gross proceeds of approximately A$80,000,000 or approximately C$72,080,000 . The net proceeds from the Placement will be used [...]

Marimaca Copper Corp. is pleased to announce that it is conducting a brokered placement, on a best efforts basis, in Australia and select other jurisdictions outside of Australia, except for Canada, of an aggregate of 8,376,964 Chess Depositary Interests of the Company at a price of A$9.55 per CDI for gross proceeds of approximately A$80,000,000 or approximately C$72,080,000 . The net proceeds from the Placement will be [...]

Marimaca Copper Corp. is pleased to announce the results of the Definitive Feasibility Study for its Marimaca Oxide Deposit which considers a nominal 50 ktpa of copper cathode production target for an estimated 13-year reserve life. The Company will host an investor presentation, covering the DFS, via the Investor Meet Company platform on August 26, 2025. Further details can be found below. Highlights Pre-production [...]

Marimaca Copper Corp. is pleased to announce it has recently executed a binding asset purchase option agreement to acquire a used sulfuric acid plant in Chile from CEMIN Holding Minero . Sulfuric acid is one of the key input costs for the Marimaca Oxide Deposit , and the ability to produce a significant amount of its own supply will reduce exposure to a volatile acid market. Highlights Option agreement to acquire sulfuric [...]

Marimaca Copper Corp. is pleased to announce further drilling at the Pampa Medina deposit, extending the high-grade sediment-hosted manto-system 300m to the west from previous drilling. Pampa Medina is located at low altitude approximately 28km east of the Company's Marimaca Oxide Deposit in a flat "pampa" valley within the Atacama Desert . The Company is executing a 10,000m extensional drilling program with three rigs [...]